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Phase II Environmental Site Assessment Heck Elementary School 308 North Broadway Belgrade, Gallatin County, Montana, 59714 Superfund Technical Assessment and Response Team (START) V Contract Contract No. 68HE0820D0001, Technical Direction No. 2360-2506-04 August 12, 2025 PREPARED FOR PREPARED BY U.S. Environmental Protection Agency Region 8 Brownfields and Revitalization Branch 1595 Wynkoop Street Denver, Colorado 80202 Tetra Tech, Inc. 1560 Broadway Suite 1400 Denver, Colorado 80202 (303) 312-8800 ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 i 308 North Broadway, Belgrade, MT TABLE OF CONTENTS 1.0 INTRODUCTION 1 SITE DESCRIPTION AND BACKGROUND 1 1.1.1 Phase I ESA 1 SCOPE OF WORK 2 2.0 SAMPLING 4 HAZARDOUS MATERIALS SURVEY 4 2.1.1 ACM Sampling 4 2.1.1.1 Field Survey and Analytical Protocols 4 2.1.1.2 Assumptions and Deviations 5 2.1.2 LBP Screening 5 2.1.2.1 Field Survey and Analytical Protocols 5 2.1.2.2 Assumptions and Deviations 6 2.1.3 Other Hazardous Materials Inventory 6 2.1.3.1 Assumptions and Deviations 6 SOIL SAMPLING 7 2.2.1 Field Survey and Analytical Protocols 7 2.2.2 Assumptions and Deviations 8 RADIOLOGICAL SURVEY 8 2.3.1 Field Survey and Analytical Protocols 8 2.3.2 Assumptions and Deviations 8 3.0 FINDINGS AND RESULTS 9 HAZARDOUS MATERIALS SURVEY 9 3.1.1 ACM 9 3.1.2 LBP 10 3.1.3 Other Hazardous Materials 11 SOIL 11 RADIOLOGICAL SURVEY 13 4.0 CONCLUSIONS AND RECOMMENDATIONS 15 HAZARDOUS MATERIALS SURVEY 15 4.1.1 Asbestos Containing Material 15 4.1.2 Lead Based Paint 16 4.1.3 Other Hazardous Materials 17 SOIL 17 RADIOLOGICAL SURVEY 18 5.0 REFERENCES 19 ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 ii 308 North Broadway, Belgrade, MT TABLES TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING TABLE 1B: SUMMARY OF ACM ANALYTICAL RESULTS – IT BUILDING TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING TABLE 2B: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – IT BUILDING TABLE 3A: SUMMARY OF SOIL ANALYTICAL RESULTS TABLE 3B: LEAD IN SOIL VADOSE ZONE TRAVEL TIMES TABLE 4A: SUMMARY OF RADIOLOGICAL SURVEY RESULTS – BOILER ROOM TABLE 4B: SUMMARY OF RADIOLOGICAL SURVEY RESULTS – COAL STORAGE ROOM FIGURES FIGURE 1: SITE VICINITY FIGURE 2: SITE LOCATION FIGURE 3A: HECK SCHOOL BUILDING EXTERIOR – ACM SAMPLE LOCATIONS FIGURE 3B: HECK SCHOOL MULTIPURPOSE AREA – ACM SAMPLE LOCATIONS FIGURE 3C: HECK SCHOOL EAST WING – ACM SAMPLE LOCATIONS FIGURE 3D: HECK SCHOOL SOUTH WING – ACM SAMPLE LOCATIONS FIGURE 3E: IT BUILDING MAIN FLOOR AND EXTERIOR – ACM SAMPLE LOCATIONS FIGURE 3F: IT BUILDING UPSTAIRS AND ATTIC – ACM SAMPLE LOCATIONS FIGURE 3G: IT BUILDING BASEMENT – ACM SAMPLE LOCATIONS FIGURE 4A: HECK SCHOOL BUILDING EXTERIOR – POSITIVE LBP READING LOCATIONS FIGURE 4B: HECK SCHOOL MULTIPURPOSE AREA – POSITIVE LBP READING LOCATIONS FIGURE 4C: HECK SCHOOL EAST WING – POSITIVE LBP READING LOCATIONS FIGURE 4D: HECK SCHOOL SOUTH WING – POSITIVE LBP READING LOCATIONS FIGURE 4E: IT BUILDING EXTERIOR – POSITIVE LBP READING LOCATIONS FIGURE 5: SOIL SAMPLING LOCATIONS FIGURE 6: RADIOLOGICAL READING LOCATIONS APPENDICES APPENDIX A: PHOTOGRAPHIC DOCUMENTATION APPENDIX B: INSPECTOR CERTIFICATIONS APPENDIX C: ACM ANALYTICAL PACKAGE – HECK SCHOOL BUILDING SAMPLES APPENDIX D: ACM ANALYTICAL PACKAGE – IT BUILDING SAMPLES APPENDIX E: SOIL ANALYTICAL PACKAGE AND DATA VALIDATION ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 iii 308 North Broadway, Belgrade, MT ACRONYMS AND ABBREVIATIONS ACM Asbestos-containing material AHERA Asbestos Hazard Emergency Response Act ARM Administrative Rules of Montana ATSDR Agency for Toxic Substances and Disease Registry bgs Below ground surface BER Business environmental risk c/m Counts per minute CFR Code of Federal Regulations DEQ Montana Department of Environmental Quality EPA U.S. Environmental Protection Agency ESA Environmental site assessment GWIC Groundwater Information Center HUD U.S. Department of Housing and Urban Development IT Information Technology Kd Soil-water partitioning coefficient LBP Lead-based paint LF Linear feet mg/cm2 Milligram per square centimeter mg/kg Milligrams per kilogram µg/L Micrograms per liter MBMG Montana Bureau of Mines and Geology MCA Montana Code Annotated NESHAP National Emissions Standards for Hazardous Air Pollutants NORM Naturally Occurring Radioactive Materials OSHA Occupational Safety and Health Administration PCB biphenyl PLM Polarized light microscopy PPE Personal protective equipment REC Recognized environmental condition RSL Regional screening level SAP Sampling and analysis plan SPLP precipitation leaching procedure SF Square feet START Superfund Technical Assessment and Response Team TBA Targeted Brownfields Assessment XRF X-ray fluorescence ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 1 308 North Broadway, Belgrade, MT 1.0 INTRODUCTION The U.S. Environmental Protection Agency (EPA) Region 8 tasked the Tetra Tech, Inc. (Tetra Tech) Region 8 Superfund Technical Assessment and Response Team (START) V to conduct a Targeted Brownfields Assessment (TBA) Phase II Environmental Site Assessment (ESA) at the former Heck Elementary School (subject property) at 308 North Broadway, Belgrade, Gallatin County, Montana (Figure Tables and figures follow the text. SITE DESCRIPTION AND BACKGROUND The subject property is identified as the former Heck Elementary School and is located in a mixed residential and commercial area in Belgrade, Montana. The subject property consists of three parcels totaling 2.76 acres and includes the main school building, which is approximately 110,000 square feet (SF), and a smaller building identified as the Information Technology (IT) building, which is approximately 1,800 SF (Figure The site is zoned as public and is owned and managed by Belgrade School District 44. The school building was initially constructed in 1955 and was used as an elementary school until recently, and is currently being used as a public meeting space, practice facilities, offices, and board rooms. The smaller building on the site was previously an adult education facility and currently houses the school district’s IT department. Future use of the property will be the new location of the Belgrade Police Department. 1.1.1 Phase I ESA In October 2024, Tetra Tech conducted a Phase I ESA on the subject property that identified the following recognized environmental conditions (REC), business environmental risks (BER), and de minimis conditions (Tetra Tech 2025a). Review of historical documentation and observations made during the site reconnaissance identified the following RECs for the subject property: • The on-site structure (Heck Elementary School) was formerly heated by a coal furnace installed during original construction. Due to coal burning and storage activities, radioactive materials (coal ash) may have been concentrated within the furnace and adjacent coal storage areas. The presence of coal ash and potential concentration of radioactive materials constitutes a REC for the site. • Soils adjacent to painted external walls that test positive for lead-based paint (LBP) could be impacted by the deposition of lead from the weathering and decay of LBP. These soils pose a direct contact risk to occupants of the property. The presence of lead in soils adjacent to the structures is considered a REC for the subject property. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 2 308 North Broadway, Belgrade, MT Review of historical documentation and observations made during site reconnaissance identified the following BERs for the subject property: • The subject property had four asbestos removal projects. Ingraham Environmental Inc. performed a removal project from July 30, 2008, to August 15, 2008. Rising Lightning Environmental Contractors LLC performed two asbestos removal projects. The first ran from June 24, 2010, to June 30, 2010. The second ran from July 29, 2015, to August 9, 2015. Schroeder Contracting Inc. performed a removal from July 28, 2017, to August 11, 2017. These removals were limited in scope and did not remove all sources of asbestos containing material (ACM) at the facility. Given the age of the structures on the subject property, the school may still contain ACM. The potential presence of ACM is considered a BER. • Given the age of the structures on the subject property, the school may contain LBP. The potential presence of LBP is considered a BER. • Hazardous waste streams have been identified associated with freon, mercury, and biphenyl (PCB)-containing fixtures, appliances, and electrical infrastructure. The potential presence of these hazardous waste streams is considered a BER. Review of historical documentation and observations made during the site reconnaissance identified the following de minimis condition for the subject property: • The presence of small quantities of household hazardous substances and petroleum products is considered a de minimis condition. SCOPE OF WORK The scope of the Phase II ESA, as defined by EPA, was to investigate the presence and extent of the RECs, BERs, and de minimis condition identified during the Phase I ESA. The structures on site were inspected to evaluate whether ACM, LBP, PCB-containing equipment, and mercury-containing equipment were present in building materials prior to redevelopment activities. The City of Belgrade plans to redevelop the property into a new location for the police department. START V conducted the following activities at the subject property April 27 to April 29, 2025: • Sampling of suspect building materials for ACM, • Screening of painted surfaces using an X-ray fluorescence (XRF) analyzer to assess for LBP, • A radiological assessment of the coal furnace, • An inventory of PCB ballasts, mercury switches, thermostats, and lights, and • Collected eight composite surface soil samples that were analyzed for total lead and precipitation leaching procedure (SPLP) lead in dripline areas to assess for presence of lead associated with sloughing LBP. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 3 308 North Broadway, Belgrade, MT START V’s asbestos and LBP inspector for the survey was Brandi Davis, an EPA-licensed asbestos inspector and certified lead-based paint inspector. Inspector certifications can be found in Appendix B. The field team also included Misia Zilinsky, Makena Tanko, Cameron Butler, Brandon Kingsbury, and Ryan Kizer. Brandon Kingsbury and Ryan Kizer conducted the soil sampling. Misia Zilinsky and Brandon Kingsbury conducted the radiological survey. Misia Zilinsky, Makena Tanko, Cameron Butler, and Ryan Kizer all assisted in hazardous materials surveys. Misia Zilinsky and Ryan Kizer were the sample custodians and completed the chain-of- custody form, packaged, and shipped the samples. START V submitted a site-specific Sampling and Analysis Plan (SAP) in support of assessment activities to EPA on March 26, 2025 (Tetra Tech 2025b). On April 17, 2025, EPA approved the SAP, before the survey began at the subject property. Field activities were performed in accordance with the SAP, except where noted in Section 2.0. START V prepared this report in accordance with generally accepted industry practices and procedures. START V provided these services consistent with the level and skill ordinarily exercised by members of the profession currently practicing under similar conditions. This statement is in lieu of other statements either expressed or implied. The scope of services performed in execution of this evaluation may not be appropriate to satisfy the needs of other users, and use or re-use of this document, the findings, conclusions, or recommendations is at the risk of said user. This report does not warrant against future operations or conditions that may not be consistent with its recommendations. Section 2.0 specifies field and analytical protocols and conveys assumptions and deviations. Section 3.0 presents analytical results. Section 4.0 presents conclusions and offers recommendations based on assessment findings. Section 5.0 lists sources referenced during development of this report. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 4 308 North Broadway, Belgrade, MT 2.0 SAMPLING START V conducted the Phase II ESA field investigation at the subject property in April 2025. START conducted hazardous material assessments, soil sampling, and a radiological survey. The Phase II ESA investigative methodology is described in the following sections. Appendix A contains photographs taken during the survey. HAZARDOUS MATERIALS SURVEY 2.1.1 ACM Sampling START V collected suspect ACM samples on the subject property from April 27 to April 29, 2025. The purpose of the asbestos survey was to evaluate the subject property buildings for the presence, quantity, locations, and characterization of ACM that may require abatement prior to renovation or demolition activities in accordance with the Asbestos Hazard Emergency Response Act (AHERA) and National Emissions Standards for Hazardous Air Pollutants (NESHAP) regulations (AHERA 1986), as adopted by EPA. The intent of the asbestos NESHAP regulations is to protect the public and workers by minimizing release of asbestos fibers during activities involving processing, handling, and disposing of ACM. According to the Agency for Toxic Substances and Disease Registry (ATSDR), inhaling asbestos fibers can cause cancer and other lung diseases (ATSDR 2016). The survey accorded with industry standard practice for hazardous materials surveys. The collection of suspected ACM samples accorded with NESHAP regulations as adopted by EPA. 2.1.1.1 Field Survey and Analytical Protocols START V made every effort to inspect all areas of the subject property building. Minor demolition of materials (destructive sampling) was required during the survey effort. The collection of suspect ACM samples accorded with NESHAP, as adopted by EPA, and AHERA protocols. AHERA defines “asbestos-containing material” as any material or product that contains more than 1 percent asbestos (AHERA 1986). Suspected ACMs were grouped as homogeneous areas if the material was similar in appearance and texture; however, if the inspector decided a material (for example, wall texturing) was not similar in appearance and texture to other materials in the subject property building, the inspector distinguished the material as unique and collected samples of each unique material accordingly. START V collected bulk samples of suspected ACM to confirm that each distinct layer of material was represented in the sample. A wetting agent was applied to friable surfaces prior to sample collection to reduce the potential for fiber release. All samples collected were placed in ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 5 308 North Broadway, Belgrade, MT plastic bags, labeled, and sealed immediately upon collection. A unique sample identification number was assigned to each sample. The sampling instruments were wiped clean using a wet, lint-free cloth after collecting each sample to minimize potential cross-contamination between samples. The bulk samples of suspected ACM remained in the inspector’s custody until they were sent to the laboratory. Upon completion of sampling activities, the samples were sent, along with START V’s chain-of-custody documentation, to Eurofins Built Environmental Testing West, LLC for analysis per EPA Method 600/R-93/116 via polarized light microscopy (PLM). Eurofins is a National Voluntary Laboratory Accreditation Program-certified laboratory. Section 3.1.1 summarizes ACM analytical results. Sample locations are depicted in Figures 3A through 3G. 2.1.1.2 Assumptions and Deviations START V inspected the interior and exterior of the subject property buildings for suspected ACM. Because of limitations on destructive sampling methods, additional suspect materials may be present but not detected in walls, voids, or other concealed areas. A raised floor in the media room prevented inspection of the underlying floor of this room. 2.1.2 LBP Screening LBP screening was conducted at the subject property from April 27 to April 29, 2025. START V conducted a screening to assess the presence, quantity, and locations of LBP exceeding lead hazard levels which would require Occupational Safety and Health Administration (OSHA) worker safety precautions during development activities. The LBP screening proceeded according to protocols similar to the single-family housing inspection procedures in U.S. Department of Housing and Urban Development (HUD) guidelines (HUD 2012). EPA and HUD define LBP as any surface coating that contains at least 1.0 milligram per square centimeter (mg/cm2) or 0.5 percent lead by weight. START V conducted a screening of paint-covered interior and exterior surfaces using a SciAps X-550 XRF spectrometer. 2.1.2.1 Field Survey and Analytical Protocols START V made every effort to inspect all interior and exterior areas of the subject property structure. The subject property building was constructed between 1978 and 1983, and HUD (2012) Guidelines for the Evaluation and Control of LBP in Housing suggest that paint applied before or during 1978 could contain lead. The SciAps X-550 is an XRF spectrum analyzing system for quantitative measurement of lead in paint on various substrates. The SciAps X-550 XRF unit has a HUD-compliant Performance Characteristic Sheet; therefore, the LBP screening results are considered HUD-compliant for ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 6 308 North Broadway, Belgrade, MT residential housing or child-occupied facilities. START V performed XRF screening of painted surfaces that could be impacted during renovation or demolition activities. START V used the XRF “lead paint mode” for testing, standardized per the equipment instruction manual, and programmed the unit with an action level of 1.0 milligrams per square centimeter (mg/cm2). The Housing and Community Development Act of 1987 (Public Law 100- 242) considers LBP to be paint containing greater than or equal to 1.0 mg/cm2 lead by XRF testing or 1.0 mg/cm2 lead by laboratory analysis. START V conducted XRF calibration checks on the SciAps X-550 spectrometer according to the SciAps recommended protocol and HUD guidelines. These quality control readings were used to monitor the performance of the SciAps X-550 spectrometer. Calibration check readings were taken at the beginning and end of operation and every 4 hours during operation from a standard reference material (mounted on a wood block) that is provided with the SciAps X-550 XRF instrument. Section 3.1.2 summarizes the XRF screening results of painted surfaces at the subject property. Locations of positive LBP readings are depicted in Figures 4A through 4E. 2.1.2.2 Assumptions and Deviations START V inspected the exterior and interior of the subject property buildings for LBP. START V was able to access and sample all accessible surfaces for LBP. During the assessment of the buildings several painted surfaces were encountered that were identical to other paint colors, substrates, or components that tested positive for lead. These surfaces were assumed to be positive. 2.1.3 Other Hazardous Materials Inventory As part of the other hazardous materials assessment, START V completed an inventory of potential PCB- and mercury-containing equipment observed on the subject property. START V inspected the building at the subject property and noted observed PCB- or mercury-containing building components on field sheets. START V made every effort to provide a complete inventory of these items; however, START V cannot guarantee an accounting of every item. A summary of the potential PCB- or mercury-containing materials inventoried during the assessment is in Section 3.1.3. 2.1.3.1 Assumptions and Deviations START V inspected the exterior and interior of the subject property buildings for other hazardous materials. START V was able to investigate all accessible areas for hazardous materials. Although START V dismantled all fixtures with variations in make and model to ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 7 308 North Broadway, Belgrade, MT inspect for hazardous materials, most fixtures were left intact and assumed to be either positive or negative for hazardous materials based on initial observation of the dismantled unit. SOIL SAMPLING START V collected composite surface soil samples on the subject property on April 11, 2025 Surface soil sample locations are depicted on Figure 5. 2.2.1 Field Survey and Analytical Protocols START V collected 5-point composite soil samples from eight transects across the subject property in drip line areas. Composite surface soil samples were collected across each transect at 5 equally spaced sample locations from 0 to 6 inches below ground surface (bgs). Sub- samples were transferred to a decontaminated stainless-steel container with a plastic disposable scoop and mixed until the soil consistency became homogeneous. Each composite sample was placed in a labeled laboratory-supplied 8-ounce glass container and submitted for laboratory analysis of total lead by EPA method 6020. The laboratory dried and passed the samples through a No. 100 mesh sieve before analysis. Soil samples were subsequently analyzed using SPLP via EPA method 1312. For quality control, one field duplicate sample was collected. Overall, START V collected eight investigative composite surface soil samples and one duplicate soil sample. All samples were uniquely identified, labeled, and stored on ice and remained in the sampler’s custody until they were sent to the laboratory. Upon completion of sampling activities, soil samples were shipped, along with START V’s chain-of-custody documentation, via FedEx ground to Merit Laboratories, Inc. in East Lansing, Michigan on April 18, 2025. All surface soil samples were analyzed for total lead to assess the presence of lead associated with sloughing LBP. The concentrations of total lead exceeded Montana Department of Environmental Quality’s (DEQ) leaching screening level of 90 milligrams per kilogram (mg/kg) for samples IT-01-SO-0-0.5-20250411, IT-03-SO-0-0.5-20250411, and IT-04- SO-0-0.5-20250411; therefore, the associated SPLP leachates for these samples were analyzed for lead. Section 3.2 summarizes soil sampling analytical results. The final sampling locations are identified on Figure 5. Appendix E presents soil sample analytical results and chain-of-custody forms for the samples, as well as the data validation report. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 8 308 North Broadway, Belgrade, MT 2.2.2 Assumptions and Deviations Soil sampling is only necessary in areas where soil is adjacent to painted surfaces that have tested positive for LBP and that are within dripline areas where sloughing of LBP poses a contamination risk. Ten sampling transects were originally planned, however only eight of these transects were sampled. Two of the planned sampling transects, HE-01-SO-0-0.5-20250411 and IT-02-SO-0-0.5-20250411, were located on paved surfaces with no soil present, therefore soil sampling in these locations was not necessary or possible. RADIOLOGICAL SURVEY START V screened the former coal furnace for the presence of radioactivity associated with long term coal burning activities. Depending on the source of coal, Naturally Occurring Radioactive Materials (NORM) can be present and varying quantities of the radioactive isotope varieties thorium, uranium, radium, and potassium can be present. These isotopes emit a spectrum of alpha, beta, and gamma emissions (ionizing radiation), with the bulk of emissions occurring in the alpha to beta range with minimal gamma emissions. 2.3.1 Field Survey and Analytical Protocols START V utilized a Ludlum 2241-2 model Geiger counter with pancake receiver to detect radioactive emissions of counts per minute Once emission totals have been assessed, c/m were converted to Rems per calendar quarter and compared to permissible dose limits as provided in the Administrative Rules of Montana 37.14.700 Permissible Doses, levels, and Concentration: Radiation Dose to individuals. Reading locations are identified in Figure 6. 2.3.2 Assumptions and Deviations Based on the Ludlum 2241 model Geiger counter and the unit’s associated cesium-137 sensitivity, START V assumed a conversion of 1,200 counts per minute per millirem/hour to determine total levels of ionizing radiation. Additionally, total counts of ionizing radiation are assumed to be a mixture of alpha, beta, and gamma emissions. Additionally, START V assumed the extent of enhanced NORM to encompass only the coal burning furnace and coal storage areas. Other areas were not investigated for ionizing radiation as part of this survey. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 9 308 North Broadway, Belgrade, MT 3.0 FINDINGS AND RESULTS A START V data validator performed a Stage 1 verification of the analytical reports according to Tetra Tech’s Standard Operating Procedure 203-2, “Laboratory Analytical Data Verification” (Tetra Tech 2021). The data verification reports are included in the relevant appendices with the analytical reports. Based on results of the data verification, all data were considered usable. HAZARDOUS MATERIALS SURVEY 3.1.1 ACM The survey of the subject property has revealed the presence of ACM in various samples collected throughout the Heck Elementary School. No ACM was detected throughout the IT building. Notably, ACM above the regulated threshold of 1 percent asbestos was identified in the school building for the following homogenous areas: • HQ-Heck-DW01-A and B: Off-white joint compound associated with the peach small- grained drywall throughout the pantry, janitor closet, main office, media room, and rooms 17B, 22, 23, and 24; 3,000 square feet of 2% non-friable. • HQ-Heck-SU01-A, B, and C: Purple sink undercoating on the kitchen sink; 3 square feet of 3% non-friable. • HQ-Heck-VFT02-A, B, and C: Brown 9-by-9-inch vinyl floor tiles in the janitor closet, rooms 3, 4, 5, and 10, and the bathroom in rooms 3 and 4; 5,000 square feet of 5% non-friable. • HQ-Heck-VFT04-A: Black mastic associated with the green 12-by-12-inch vinyl floor tiles in hallways 1 and 3; 80 square feet of 5% non-friable. • HQ-Heck-DW03-C: Off-white joint compound associated with the grey grainy drywall in the workroom and the room 6 closet; 510 square feet of 2% non-friable. • HQ-Heck-DW05-A and C: Off-white joint compound associated with the white medium grained drywall throughout storage closet C (ST-C), rooms 12 through 23, and hallway 2; 77,000 square feet of 2% non-friable. • HQ-Heck-SU03-A, B, and C: Black sink undercoating on the sinks in the media room, and rooms 15, 17, 21, and 22; 15 square feet of 2% non-friable. • HQ-Heck-VFT14-A, B, and C: Brown 9-by-9-inch vinyl floor tile throughout rooms 3, 4, 5, 10, and the bathroom in rooms 3 and 4; 2,300 square feet of 5% non-friable. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 10 308 North Broadway, Belgrade, MT • HQ-Heck-WB02-A, B, and C: Green chalkboard in room 15; 150 square feet of 7% non-friable. • HQ-Heck-VFT07-A and B: Black mastic associated with the beige 2 by 2 ft vinyl floor tiles in room 15; 144 square feet of 2% non-friable. • HQ-Heck-VFT08-A and C: Beige 12-by-12-inch floor tile in rooms 6 and 22; 500 square feet of 2% non-friable. • HQ-Heck-CPM12-A and B: Black mastic associated with the multicolored carpet in rooms 21 and 24; 2,000 square feet of 2% non-friable. • HQ-Heck-VFT10-A, B, and C: Brown mastic associated with the white 12-by-12-inch vinyl floor tile in the bathroom in rooms 22 and 23; 32 square feet of 3% • HQ-Heck-VSF07-A: Tan floor tile associated with the multicolor vinyl sheet flooring in the bathroom in rooms 3 and 4; 24 square feet of 3% non-friable. • HQ-Heck-VFT12-A, B, and C: Tan 9-by-9-inch floor tile in the bathroom in rooms 3 and 4; 27 square feet of 5% non-friable. • HQ-Heck-WB03-A, B, and C: Gray non-fibrous wallboard material around the exterior of the building on top of concrete; 200 square feet of 10% non-friable. • HQ-Heck-VFT13-A, B, and C: Gray floor tile and brown mastic in the room 4 bathroom; 3 square feet of 3% (floor tile) and 4% (mastic) non-friable. Appendices C and D presents the analytical report for PLM results from samples of suspected ACM collected at the buildings on the subject property, chain-of-custody documentation, and the data validation report. Analytical results for building materials are summarized in Tables 1A and 1B. Sample locations are depicted in Figures 3A through 3G. Quantities of each asbestos- positive homogeneous area are tabulated either in linear feet (LF) or square feet (SF) depending on the type of associated material. 3.1.2 LBP LBP was detected on the exterior and interior walls of the school building and the exterior walls of the IT building in several locations. Of the 900 painted surfaces identified throughout both buildings, 128 surfaces produced XRF readings greater than or equal to 1.0 mg/cm2 and 93 surfaces were assumed positive. Of these positive and assumed positive readings, 218 surfaces were throughout the school building and 4 surfaces were on the exterior of the IT building. Review of LBP readings showed levels between 0 mg/cm2 and 5.3 mg/cm2 throughout ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 11 308 North Broadway, Belgrade, MT the interior and exterior of the school building. LBP was determined to be most prevalent on the gray metal door on the exterior of the school building, the cream wooden ceiling in the kitchen, the gray wooden window frames on the exterior of the school building, cream particle board in room 15, cream wooden ceiling beams in room 14 and along the exterior of the school building, the blue concrete ceiling beam in room 2, and the cream wooden trim in room 15. No LBP was detected on the interior of the IT building. On the exterior of the IT building, LBP readings ranged from 0 mg/cm2 to 5.2 mg/cm2, and LBP was determined to be most prevalent in the white siding, white wooden trim, white particle board on the porch ceiling, and white exterior wooden beams on the porch. Trim B on the IT building exterior is associated with damaged materials Tables 2A and 2B summarize LBP screening results for measurements completed throughout the interior and exterior of the school building and the IT building. Several materials are listed in the table as “assumed positive” (AP). This applies to paint colors, substrate, and components that were identical to other paints, substrates, and components that came back positive for lead and therefore additional analysis was deemed unnecessary. Bolded results indicate where LBP was detected at a concentration equal to or greater than the Housing and Community Development Act of 1987 (Public Law 100-242) definition of LBP (greater than or equal to 1.0 mg/cm2). 3.1.3 Other Hazardous Materials A visual inspection of additional hazardous materials was carried out at the subject property. START V did not identify any bulbs, ballasts, switches, thermostats, or any other appliances that contained mercury, freon, PCBs, or other hazardous materials. Various household chemicals and cleaning products were identified in the janitorial closet, but these materials represent a de minimis condition. SOIL START V detected LBP on the exterior walls of the subject property buildings and collected eight composite samples from the drip lines: three composite samples around the IT building, IT-01-SO-0-0.5-20250411, IT-03-SO-0-0.5-20250411, and IT-04-SO-0-0.5-20250411; and five composite samples around the main Heck Elementary School building, HE-02-SO-0-0.5- 20250411, HE-03-SO-0-0.5-20250411, HE-04-SO-0-0.5-20250411, HE-05-SO-0-0.5-20250411, and HE-06-SO-0-0.5-20250411, plus one duplicate sample, HE-03-SO-0-0.5-20250411-DUP. Composite surface soil samples were analyzed for total lead and select samples were analyzed for SPLP lead in dripline areas to assess the presence of lead associated with sloughing LBP. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 12 308 North Broadway, Belgrade, MT Soil sample results were validated and qualified, if necessary. Appendix E presents the analytical results from soil samples, chain-of-custody documentation, and data validation forms. A summary of lead found in drip line soil is provided below: Heck Elementary School: • Total lead concentration associated with sample HE-02-SO-0-0.5-20250411 is 22.2 mg/kg. • Total lead concentration associated with sample HE-03-SO-0-0.5-20250411 is 25.7 mg/kg. • Total lead concentration associated with sample HE-03-SO-0-0.5-20250411-DUP is 22.4 mg/kg. • Total lead concentration associated with sample HE-04-SO-0-0.5-20250411 is 30.6 mg/kg. • Total lead concentration associated with sample HE-05-SO-0-0.5-20250411 is 50.4 mg/kg. • Total lead concentration associated with sample HE-06-SO-0-0.5-20250411 is 27.4 mg/kg. IT Building: • Total lead concentration associated with sample IT-01-SO-0-0.5-20250411 is 123 mg/kg. • Total lead concentration associated with sample IT-03-SO-0-0.5-20250411 is 204 mg/kg. • Total lead concentration associated with sample IT-04-SO-0-0.5-20250411 is 307 mg/kg. Table 3A summarizes the lead contaminated soil screening results of dripline soils on the subject property. Figure 5 depicts soil sampling locations. Bolded results in the table indicate where lead was detected at a concentration greater than the leaching to groundwater screening level of 90 mg/kg (DEQ 2024). Since select soil samples exceeded the leaching-to-groundwater screening level, these samples were further analyzed by SPLP lead to evaluate the potential for leaching to groundwater. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 13 308 North Broadway, Belgrade, MT Based on review of the SPLP results, all leachate samples exceeded the DEQ numeric water quality standard for lead of 10 micrograms per liter (µg/L). SPLP results are summarized below: • Lead leachate concentration associated with sample IT-01-SO-0-0.5-20250411 is 52 µg/L. • Lead leachate concentration associated with sample IT-03-SO-0-0.5-20250411 is 49 µg/L. • Lead leachate concentration associated with sample IT-04-SO-0-0.5-20250411 is 146 µg/L. To further understand the site-specific mobility of lead to groundwater, SPLP data were used to calculate soil-water partitioning coefficients (Kd) using the New Jersey method for Development of a Dilution Attenuation Factor for the Impact to Groundwater Pathway (NJDEP 2013). Once Kd values were calculated, Tetra Tech used EPA’s 1996 Soil Screening for Superfund guidance (EPA 1996) and associated default variables such as soil density, porosity, water content, and infiltration rate to determine site-specific vadose zone travel times for lead. Distances for vadose zone travel time were determined through a review of nearby well logs published by the Montana Bureau of Mines and Geology (MBMG) Groundwater Information Center (GWIC). Upon review of GWIC records, the closest well (GWIC well #120083) to the subject property indicated a total depth of 46.5 feet and a static water level of 13 feet (MBMG 2025). As the soil samples were collected from 0- to 6-inches bgs, a distance of 12.5 feet to groundwater was used to calculate the vadose zone travel time. To provide assurance that leaching to groundwater of lead impacted soils is not occurring, Tetra Tech also calculated a vadose zone travel time for a conservative leaching distance of 5 feet to groundwater. The 5- foot leaching distance should account for extreme fluctuations in static water level and a worst- case scenario if lead is encountered at lower depths within the soil column. Calculated vadose zone travel times for lead for 12.5 feet of vertical distance ranged from 19,085 years to 37,808 years and calculated vadose zone travel times for lead for 5 feet vertical distance ranged from 7,634 years to 15,123 years. These calculations are shown in Table 3B. RADIOLOGICAL SURVEY START V completed a scan of the boiler room for traces of ionizing radiation associated with former coal burning activities. The scan included open-air readings of the exterior and interior of the furnace area and coal storage room using the Ludlum model 2241-2 Geiger counter with pancake probe receiver. Five readings were obtained at 12 locations throughout the boiler ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 14 308 North Broadway, Belgrade, MT room: four readings, one along each wall of the room; four readings, one along each side of the boiler; one reading between the boiler and the coal storage room; one reading between the boiler and the coal stack; one reading inside the coal stack; and one reading on the wall adjacent to the coal stack. Five readings were obtained at five locations throughout the coal storage room: four readings, one along each wall of the room, and one reading in the center of the room. Based on survey results, maximum ionizing radiation rates were recorded inside the coal stack and along the wall adjacent to the coal stack, with emissions ranging from 0.1616 rems per calendar quarter to 0.1944 rems per calendar quarter. Emissions throughout the boiler room ranged from 0.0819 rems per calendar quarter to 0.1944 rems per calendar quarter. Emissions throughout the coal storage room ranged from 0.1292 rems per calendar quarter and 0.1500 rems per calendar quarter, with maximum emissions measured along the north wall of the coal storage room. While these results are elevated above general background (0.02 to 0.04 rems per calendar quarter), emissions are within safe parameters for restricted adult workers conducting daily activities close to the coal furnace. Tables 4A and 4B summarize the radiological survey results. Figure 6 depicts radiological reading locations. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 15 308 North Broadway, Belgrade, MT 4.0 CONCLUSIONS AND RECOMMENDATIONS The following conclusions and recommendations are based on observations during the survey and analytical results from samples collected at the subject property. START V recommends that results be discussed with DEQ’s Brownfields program to evaluate which site-specific cleanup procedures, in accordance with Montana Laws and Rules, are required before redeveloping the site. HAZARDOUS MATERIALS SURVEY 4.1.1 Asbestos Containing Material Review of ACM data shows that ACM at or above the regulatory standard of 1% asbestos was found prevalently throughout the elementary school building in the off-white joint compound found in the drywall throughout hallway 2 and several rooms, sink undercoat throughout several rooms, various vinyl floor tiles throughout several rooms and hallways, black and brown mastics throughout several rooms, the green chalkboard in room 15, and the gray wallboard location on the exterior of the building. No ACM was identified in the IT building. START V also came across multiple suspected components including pipe insulation, cement, ceiling tiles, vinyl countertop with mastic, baseboard, and carpet with mastic; however, there were no detections of ACM in these materials. Though other presumed materials were non- detect for asbestos, ACM is still present at the subject property, and management strategies and adherence to asbestos regulations are crucial to mitigate risks associated with ACM exposure. All ACM should be removed by a licensed asbestos abatement contractor before renovation or demolition work disturbs the material. The removed waste must be disposed of in accordance with state and local regulations. The removal and disposal of ACM are regulated under NESHAP in 40 Code of Federal Regulations (CFR) Part 61; Administrative Rules of Montana (ARM) 17.74, Subchapter 3: Asbestos Control; and Montana Code Annotated (MCA) Title 75, Part 5. Worker exposure to asbestos during construction operations, including ACM removal, is regulated under 29 CFR 1926.1101. OSHA has established worker protection measures for the removal of asbestos from facilities, including training and medical monitoring requirements for personnel engaging in the oversight and removal of ACM, exposure limits, respiratory protection, personal protective equipment (PPE) levels, safe work practices and engineering controls, and storage of wastes. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 16 308 North Broadway, Belgrade, MT Any contractor preparing to bid or perform work on the subject property should be informed of the presence of ACM. Contractors should also be informed of compliance requirements under state and federal regulations. Following asbestos abatement, a visual inspection and asbestos air clearance should be conducted, as required by ARM 17.74.357. This report is intended to provide information concerning the types of hazardous materials that may be present in the subject property building and includes only those materials that were visible and accessible at the time of the inspection. If additional suspect materials are identified during any future demolition activities that were not sampled as a part of this asbestos survey, additional sampling will be required to confirm that the suspect material is not ACM. If any ACM is encountered during demolition, it should be removed or encapsulated by a licensed asbestos abatement contractor before renovation or demolition work disturbs the material. 4.1.2 Lead Based Paint LBP was detected on the exterior and interior walls of the school building and the exterior walls of the IT building in several locations. There are no discernable patterns identified regarding painted surfaces that were determined positive for LBP, and a variety of paint colors, substrates, and building components are associated with positive readings. HUD defines LBP as paint with lead levels above 1.0 mg/cm2. If LBP surfaces are impacted during renovation or demolition, START V recommends that the contractor conducting the renovation or demolition comply with OSHA Lead in Construction Standard, 29 CFR, 1926.62. LBP debris should be characterized and disposed of in accordance with state and local regulations. LBP surfaces are classified as either damaged or not damaged material in Tables 2A and 2B. The extent of damage is assessed in order to determine whether a surface can be encapsulated (applies to non-damaged surfaces) or needs to be stripped (applies to damaged surfaces) during removal. Of the 222 surfaces that were determined positive or assumed positive for LBP, 1 of these surfaces were determined to be damaged (the white painted trim B on the southern side of the IT building exterior) and will require stripping, or the associated building material will require complete removal prior to renovation. In Montana, the removal of LBP is regulated under 29 CFR 1926.62. OSHA provisions for removing LBP from the workplace include training requirements for personnel engaging in the oversight and removal of LBP, exposure limits, respiratory protection, PPE, safe work practices and engineering controls, and storage of wastes. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 17 308 North Broadway, Belgrade, MT OSHA regulations pertaining to the disturbance of paint with any concentration of lead require that safe work practices be used to reduce exposure to harmful levels of lead regardless of the work being performed. Safe work practices may include the use of PPE (respiratory protection, disposable coveralls, and eye protection), initial exposure assessment, and the use of wet methods. Given the presence of LBP associated with the subject property, START V recommends that renovation activities involving any painted surfaces be conducted by a contractor who has received a minimum certification of OSHA Lead in Construction Training (commonly referred to as OSHA Lead Awareness Training). START V also recommends that any contractor preparing to bid on or perform work on the subject property should be informed of the presence of LBP on the subject property building, and demolition activities involving any painted surfaces be conducted by a contractor who has received a minimum certification of OSHA Lead Awareness Training. START V recommends that the contractor conducting the renovation or demolition comply with OSHA Lead in Construction Standard, 29 CFR 1926.62. LBP debris should be characterized and disposed of in accordance with state and local regulations. 4.1.3 Other Hazardous Materials Upon inspection, electrical devices, lights fixtures, and switches throughout the school building and IT building were determined not to contain any quantities of PCBs or mercury. Therefore, specialized disposal of these components is not recommended. START V identified de minimis quantities of household hazardous waste in the form of miscellaneous household chemicals and cleaning products. If disposal is anticipated, START V recommends disposal of residual quantities of these wastes at a licensed solid waste disposal facility. SOIL Based on a review of the SPLP results and vadose zone travel times, START V calculated a vadose zone travel time for a conservative leaching distance of 5 feet to groundwater to be in the range of 7,634 years to 15,123 years. The SPLP data support that lead will not be leaching from the soil to the groundwater at a significant rate. Therefore, based on available data, lead contamination leaching to groundwater does not appear to be an exposure pathway. Lead concentrations exceed the EPA direct contact residential regional screening level (RSL) of 200 mg/kg in samples IT-03-SO-0-0.5-20250411 and IT-04-SO-0-0.5-20250411 collected adjacent to the IT building, but no samples exceed the EPA industrial direct contact RSL of 800 mg/kg ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 18 308 North Broadway, Belgrade, MT (EPA 2024). As such, lead impacted dripline soils adjacent to the IT building constitute an exposure pathway and a health threat to future occupants should use change to residential occupancy. Therefore, START V recommends removal of shallow surface soils to one foot bgs around the IT building footprint with cleanup confirmation sampling of excavation basins and sidewalls. Given the presence of lead associated with the subject property, START V recommends the renovation activities involving the soil adjacent to the IT building be conducted by a contractor who has received a minimum certification of OSHA Lead Awareness Training. START V also recommends that any contractor preparing to bid on or perform work on the subject property should be informed of the presence of lead in the soil and building, and demolition activities involving the soil adjacent to the building be conducted by a contractor who has received a minimum certification of OSHA Lead Awareness Training. START V recommends soil removal and cleanup confirmation sampling and recommends that the contractor conducting the excavation coordinate cleanup activities and cleanup confirmation sampling with DEQ’s Brownfields staff. Lead contaminated soils should be characterized and disposed of in accordance with state and local regulations. RADIOLOGICAL SURVEY Upon completion of the radiological survey, START V determined levels of ionizing radiation associated with the coal furnace are elevated above general background radiation. Counts per minute were recorded and converted to rems/calendar quarter to assess chronic exposure and provide comparisons against applicable rules. In accordance with ARM 37.14.705, the maximum permissible dose of radiation to individuals in restricted areas is 1.25 rems per calendar quarter for the whole body, head and trunk; active blood-forming organs; lens of eyes or gonads. Based on survey results, emissions ranged from 0.0819 rems per calendar quarter to 0.1944 rems per calendar quarter between the boiler room and the coal storage room. While these results are elevated above general background (0.02 to 0.04 rems per calendar quarter), emissions are within safe parameters for restricted workers conducting daily activities close to the coal furnace. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 19 308 North Broadway, Belgrade, MT 5.0 REFERENCES Administrative Rules of Montana (ARM) 17.74 Subchapter 3-5 Asbestos Control Program. June 23, 2006, revised November 22, 2011 ARM Subchapter 37.14.7 Standards for Protection Against Radiation. March 1980, revised March 2000. ARM Subchapter 37.14.705 Permissible Doses, Levels, and Concentrations: Radiation Dose to Individuals in Restricted Areas. March 1980, revised March 2000. Agency for Toxic Substance and Disease Registry (ATSDR). 2016. “Asbestos: Health Effects.” Asbestos Hazard Emergency Response Act of 1986 (AHERA). 1986. “Asbestos Hazard Emergency Response Act of 1986.” Revised August 2017. Montana Bureau of Mines and Geology (MBMG). 2025. Ground Water Information Center. Montana well log report – GWIC ID 120083. Montana Department of Environmental Quality (DEQ). 2024. Montana Risk-Based Corrective Action Guidance for Petroleum Releases. February. New Jersey Department of Environmental Protection (NJDEP). 2013. Guidance Document: Development of Site-Specific Impact to Groundwater Soil Remediation Standards Using the Precipitation Leaching Procedure. Version 3. November. Tetra Tech, Inc. (Tetra Tech). 2021. “Standard Operating Procedure 203, Laboratory Analytical Data Verification – Minimum Requirements.” Revision 2. November. Tetra Tech. 2024. Quality Assurance Project Plan for EPA Region 8 START V Brownfields Task Order. October. Tetra Tech. 2025a. Targeted Brownfields Assessment – Phase I Environmental Site Assessment, Heck Elementary School. January 2025. Tetra Tech. 2025b. Sampling and Analysis Plan – Phase II Environmental Site Assessment, Heck Elementary School. January 2025. U.S. Department of Housing and Urban Development (HUD). 2012. Guidelines for the Evaluation and Control of Lead-Based Paint Hazards in Housing. Second Edition. May. U.S. Environmental Protection Agency (EPA). 1996. Superfund Soil Screening Guidance. Part 2: Development of Pathway-specific soil screening levels. July. EPA. 2024. “Regional Screening Levels (RSLs) – Generic Tables.” May. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT TABLES ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT Table 1A: Summary of ACM Analytical Results – Former Heck Elementary School Building ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity Gray Concrete with Paint ND Gray Grout ND Gray Concrete with Paint ND Gray Grout ND Gray Concrete with Paint ND Gray Grout ND White Floor Tile ND Black Mastic 1% White Floor Tile ND Yellow Mastic ND White Floor Tile ND Black Mastic ND Brown Ceiling Tile with White Surface ND Brown Mastic ND Brown Ceiling Tile with White Surface ND Brown Mastic ND Brown Ceiling Tile with White Surface ND Brown Mastic ND 10 HQ-Heck-WP01-A White Fiberglass Reinforced Plastic ND 11 HQ-Heck-WP01-B White Fiberglass Reinforced Plastic ND 12 HQ-Heck-WP01-C White Fiberglass Reinforced Plastic ND 13 HQ-Heck-CK01-A Gray Caulk ND 14 HQ-Heck-CK01-B Gray Caulk ND 15 HQ-Heck-CK01-C Gray Caulk ND 16 HQ-Heck-CT01-A White Ceiling Tile ND 17 HQ-Heck-CT01-B White Ceiling Tile ND 18 HQ-Heck-CT01-C White Ceiling Tile ND Brown Baseboard ND Beige Mastic ND Brown Baseboard ND Beige Mastic ND Brown Baseboard ND Beige Mastic ND Multicolored Sheet Flooring ND Beige Mastic ND Black Mastic (Trace) 1% Multicolored Sheet Flooring ND Beige Mastic ND Multicolored Sheet Flooring ND Beige Mastic ND Black Mastic (Trace) ND 120 SF 22 HQ-Heck-VSF01-A 23 HQ-Heck-VSF01-B Multicolor Smooth sheet flooring, beige mastic Storage room A, Kitchen NF 1,000 SF Floor seams between multi- purpose room and storage closet A NF 1 SF Multi-purpose room 2,400 SF Walls in multi-purpose room NF 1,000 SF White bumpy wall panels Walls in multi-purpose room NF 60 SF 9 HQ-Heck-WT01-C White with unidirectional squiggles and dots 9-by-9 in. wall tiles 7 HQ-Heck-WT01-A 8 100,000 SF White with speckles 12-by-12 in. vinyl floor tile, brown mastic Multi-purpose room NF 2,400 SF 3 HQ-Heck-CON01-C Gray 6x12 in. CMU blocks with Gray grout Heck building walls throughout 1 HQ-Heck-CON01-A 2 HQ-Heck-CON01-B NF 4 HQ-Heck-VFT01-A 5 HQ-Heck-VFT01-B HQ-Heck-VFT01-C 24 HQ-Heck-VSF01-C HQ-Heck-WT01-B 6 Tan semi-malleable caulk White 2-by-2 ft. perforated ceiling tiles NF 19 HQ-Heck-CBM01-A NF 20 HQ-Heck-CBM01-B 21 HQ-Heck-CBM01-C Brown 4 in. cove base with brown and beige mastic Multi-purpose room 1 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity White Countertop ND Beige Mastic ND White Countertop ND Beige Mastic ND White Countertop ND Beige Mastic ND Brown Baseboard ND Tan Mastic ND Brown Baseboard ND Brown Mastic ND Brown Baseboard ND Tan Mastic ND Off-White Joint Compound 2% White Drywall with Brown/Green Paper ND Off-White Joint Compound 2% White Drywall with Brown/Green Paper ND 33 HQ-Heck-DW01-C White Drywall with Brown/Green Paper ND 34 HQ-Heck-CK02-A White Caulk ND White Caulk ND Light Gray Caulk ND 36 HQ-Heck-CK02-C White Caulk ND 37 HQ-Heck-SU01-A Purple Sink Undercoating 3% 38 HQ-Heck-SU01-B Purple Sink Undercoating 3% 39 HQ-Heck-SU01-C Purple Sink Undercoating 3% 40 HQ-Heck-CT02-A Beige Ceiling Tile with White Surface ND 41 HQ-Heck-CT02-B Tan Ceiling Tile with White Surface ND 42 HQ-Heck-CT02-C Tan Ceiling Tile with White Surface ND 43 HQ-Heck-CT03-A Beige Ceiling Tile with White Surface ND 44 HQ-Heck-CT03-B Beige Ceiling Tile with White Surface ND 45 HQ-Heck-CT03-C Tan Ceiling Tile with White Surface ND Green Carpet ND Tan Mastic ND Gray Fibrous Material ND Green Carpet ND Tan Mastic ND Gray Fibrous Material ND Green Carpet ND Tan Mastic ND Gray Fibrous Material ND 47 HQ-Heck-CPM01-B 48 HQ-Heck-CPM01-C Green carpet pad with dark stripes, tan mastic White 2-by-4 ft. multidirectional squiggles ceiling tile Kitchen, 18, 19 NF 1,500 SF 46 HQ-Heck-CPM01-A H-3 NF 50 SF Lavender sink undercoat Kitchen NF 3 SF White 2-by-4 ft. unidirectional squiggles ceiling tile Kitchen, Rooms 5-18, 19 NF 40 SF Pantry, Janitor, Office, Media Room, 17-B, 22,24 Friable 3,000 SF 35 HQ-Heck-CK02-B Gray beige painted white hard caulk Kitchen NF 2 SF 31 HQ-Heck-DW01-A 32 HQ-Heck-DW01-B Peach small-grain drywall 29 HQ-Heck-CBM02-B 30 HQ-Heck-CBM02-C Brown 6 in. cove base with tan mastic Storage room A, Kitchen NF 1 SF 28 HQ-Heck-CBM02-A Kitchen, Pantry A, Kitchen Bathroom NF 50 SF 26 HQ-Heck-VCM01-B 27 HQ-Heck-VCM01-C White with brown dots vinyl countertop with beige mastic 25 HQ-Heck-VCM01-A 2 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity Green Carpet ND Tan Mastic ND Green Carpet ND Tan Mastic ND Green Carpet ND Tan Mastic ND 52 HQ-Heck-CT04-A Tan Ceiling Tile with White Surface ND 53 HQ-Heck-CT04-B Tan Ceiling Tile with White Surface ND 54 HQ-Heck-CT04-C Tan Ceiling Tile with White Surface ND White Joint Compound ND White Drywall with Brown Paper ND White Joint Compound ND White Drywall with Brown Paper ND White Joint Compound ND White Drywall with Brown Paper ND Green Tile ND Gray Grout ND Green Tile ND Gray Grout ND Green Tile ND Gray Grout ND Gray Baseboard ND Beige Mastic ND Gray Baseboard ND Beige Mastic ND Gray Baseboard ND Beige Mastic ND 64 HQ-Heck-SHG01-A Brown Wood Shingle ND 65 HQ-Heck-SHG01-B Brown Wood Shingle ND 66 HQ-Heck-SHG01-C Brown Wood Shingle ND Brown Floor Tile 5% Black Mastic ND Brown Floor Tile 5% Black Mastic ND Brown Floor Tile 5% Black Mastic ND 70 HQ-Heck-CON02-A Gray Concrete ND 71 HQ-Heck-CON02-B Gray Concrete ND 72 HQ-Heck-CON02-C Gray Concrete ND NF 5,000 SF Gray smooth concrete pad Janitor, 11 NF 100 SF 69 HQ-Heck-VFT02-C Gray beige 9-by-9 in. vinyl floor tiles, black mastic Janitor, 5, 10, 3, 4, Room 3 and 4 bathrooms 67 HQ-Heck-VFT02-A 68 HQ-Heck-VFT02-B NF 45 SF Brown wooden shingles Multi-purpose room lockers NF 90 SF 63 HQ-Heck-CBM03-C Gray 4 in. cove base with beige mastic Boys and girls bathrooms in H-3 61 HQ-Heck-CBM03-A 62 HQ-Heck-CBM03-B 59 HQ-Heck-FT01-B 60 HQ-Heck-FT01-C Green rectangluar cement floor tiles with white grout Friable 2,000 SF 58 HQ-Heck-FT01-A Storage room B NF 50 SF 57 HQ-Heck-DW02-C White fine grained dry wall Boys and girls bathrooms in H-3 55 HQ-Heck-DW02-A 56 HQ-Heck-DW02-B NF 50 SF White 9-by-9 in. multidirectional squiggle and dot ceiling tile H-3 NF 370 SF 51 HQ-Heck-CPM02-C Green carpet, tan mastic H-3 49 HQ-Heck-CPM02-A 50 HQ-Heck-CPM02-B 3 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity 73 HQ-Heck-CON03-A Gray Concrete ND 74 HQ-Heck-CON03-B Gray Concrete ND 75 HQ-Heck-CON03-C Gray Concrete ND 76 HQ-Heck-CON04-A Gray Concrete ND 77 HQ-Heck-CON04-B Gray Concrete ND 78 HQ-Heck-CON04-C Gray Concrete ND Silver Foil ND White Paper ND Yellow Insulation ND Silver Foil ND White Paper ND Yellow Insulation ND Silver Foil ND White Paper ND Yellow Insulation ND Silver Foil ND White Paper ND Yellow Insulation ND Silver Foil ND White Paper ND Yellow Insulation ND Silver Foil ND White Paper ND Yellow Insulation ND 85 HQ-Heck-PL01-A Gray Plaster ND 86 HQ-Heck-PL01-B Gray Plaster ND 87 HQ-Heck-PL01-C Gray Plaster ND 88 HQ-Heck-PL01-D Gray Plaster ND 89 HQ-Heck-PL01-E Gray Plaster ND 90 HQ-Heck-INS01-A Orange Foam ND 91 HQ-Heck-INS01-B Orange Foam ND 92 HQ-Heck-INS01-C Orange Foam ND White Floor Tile ND Brown Mastic ND White Floor Tile ND Brown Mastic ND White Floor Tile ND Brown Mastic ND NF 6,500 SF 95 HQ-Heck-VFT03-C White 12-by-12 in. vinyl floor tiles with brown and gray splotches, brown mastic H-3, H-1 93 HQ-Heck-VFT03-A 94 HQ-Heck-VFT03-B Gray medium grain plaster with pink speckles Janitor NF 230 SF Orange foam spray insluation Janitor basement NF 2 SF 83 HQ-Heck-PIW02-B 84 HQ-Heck-PIW02-C White pipe insulation wrap with yellow insulation along 4 in. pipe runs NF 100 SF 82 HQ-Heck-PIW02-A Janitor basement NF 100 SF 81 HQ-Heck-PIW01-C White pipe insulation wrap with yellow insulation along 2 in. pipe runs Janitor basement 79 HQ-Heck-PIW01-A 80 HQ-Heck-PIW01-B Gray pebble concrete Janitor stairs and basement NF 150 SF Gray rectangular concrete blocks Janitor basement walls NF 300 SF 4 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity Green Floor Tile ND Black Mastic 5% Gray Leveling Compound ND Green Floor Tile ND Brown Mastic ND Gray Leveling Compound ND Green Floor Tile ND Brown Mastic ND Gray Leveling Compound ND Tan Ceramic Tile ND White Grout ND Tan Ceramic Tile ND Gray Grout ND Tan Ceramic Tile ND Gray Grout ND White Joint Compound 1 ND Cream Tape ND White Joint Compound 2 ND White Drywall with Brown Paper ND 103 HQ-Heck-DW03-B White Drywall with Brown Paper ND Off-White Joint Compound 2% White Drywall with Brown Paper ND Blue Carpet ND Brown Mastic ND Gray Cementitious Material ND Blue Carpet ND Brown Mastic ND Brown Floor Tile 5% Blue Carpet ND Brown Mastic ND Black Mastic ND Blue Carpet ND Brown Mastic ND Gray Cementitious Material ND Blue Carpet ND Brown Mastic ND Blue Carpet ND Brown Mastic ND Black Mastic ND 109 HQ-Heck-CPM04-B 110 HQ-Heck-CPM04-C Dark blue carpet with light blue stitching, brown mastic NF 1,600 SF 108 HQ-Heck-CPM04-A H-1 NF 350 SF 107 HQ-Heck-CPM03-C Blue with pink and white speckled carpet, brown mastic Work Room, 10, 12, 23, 5 105 HQ-Heck-CPM03-A 106 HQ-Heck-CPM03-B 104 HQ-Heck-DW03-C Gray grainy drywall Work Room, Room 6 Closet NF 135 SF 102 HQ-Heck-DW03-A Friable 510 SF 101 HQ-Heck-CWT01-C Tan 6-by-6 in. ceramic wall tiles with white grout Work Room 99 HQ-Heck-CWT01-A 100 HQ-Heck-CWT01-B 97 HQ-Heck-VFT04-B 98 HQ-Heck-VFT04-C Green 12-by-12 in. vinyl floor tiles with white and green splotches, brown mastic 96 HQ-Heck-VFT04-A H-3, H-1 NF 80 SF 5 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity Blue Carpet ND Black/Yellow Mastic ND Blue Carpet ND Brown Mastic ND Blue Carpet ND Yellow Mastic ND 114 HQ-Heck-CK03-A White Caulk ND 115 HQ-Heck-CK03-B White Caulk ND 116 HQ-Heck-CK03-C White Caulk ND Beige Countertop ND Brown Mastic ND Beige Countertop ND Brown Mastic ND Beige Countertop ND Brown Mastic ND Black Baseboard ND Beige Mastic ND Black Baseboard ND Beige Mastic ND Brown Mastic ND Black Baseboard ND Beige Mastic ND 123 HQ-Heck-SU02-A Gray Sink Undercoating ND 124 HQ-Heck-SU02-B Gray Sink Undercoating ND 125 HQ-Heck-SU02-C Gray Sink Undercoating ND 126 HQ-Heck-CT05-A Beige Ceiling Tile with White Surface ND 127 HQ-Heck-CT05-B Beige Ceiling Tile with White Surface ND 128 HQ-Heck-CT05-C Beige Ceiling Tile with White Surface ND Light Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Light Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Light Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND 132 HQ-Heck-DW04-A White Drywall with Brown Paper ND 133 HQ-Heck-DW04-B White Drywall with Brown Paper ND 134 HQ-Heck-DW04-C White Drywall with Brown Paper ND NF 115 SF Pink medium grain drywall with brown paper 8A, 8B NF 540 SF 131 HQ-Heck-VSF02-C Gray stone pattern vinyl sheet flooring with brown mastic 8A, 8B, 8C 129 HQ-Heck-VSF02-A 130 HQ-Heck-VSF02-B Gray sink undercoat Room 9 NF 1 SF White 2-by-2 ft. ceiling tiles with holes Office A and B, 9 NF 700 SF 121 HQ-Heck-CBM04-B 122 HQ-Heck-CBM04-C Black 4 in. cove base with beige mastic NF 60 SF 120 HQ-Heck-CBM04-A Office A and B, Media Room, 9, 18, 19 NF 85 SF 119 HQ-Heck-VCM02-C Beige and tan marble detail vinyl countertop with brown mastic Office B, 9 117 HQ-Heck-VCM02-A 118 HQ-Heck-VCM02-B NF 4,000 SF White brittle caulk around window frames Office B, 11, 14 NF 5 SF 113 HQ-Heck-CPM05-C Brown and beige splotched carpet squares, 2-by-2 ft., brown mastic Office A and B, Media Room, 9, 18, 18-B, 19 111 HQ-Heck-CPM05-A 112 HQ-Heck-CPM05-B 6 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity Brown Baseboard ND Beige Mastic ND Brown Baseboard ND Beige Mastic ND Brown Baseboard ND Beige Mastic ND Off-White Joint Compound 2% White Drywall with Brown Paper ND 139 HQ-Heck-DW05-B White Drywall with Brown Paper ND Off-White Joint Compound 2% White Drywall with Brown Paper ND Brown Sheet Flooring ND Brown Mastic ND Brown Sheet Flooring ND Brown Mastic ND Brown Sheet Flooring ND Brown Mastic ND Brown Baseboard ND Beige Mastic ND Brown Mastic ND Brown Baseboard ND Beige Mastic ND Brown Mastic ND Brown Baseboard ND Beige Mastic ND Brown Mastic ND 147 HQ-Heck-SU03-A Black Sink Undercoating 2% 148 HQ-Heck-SU03-B Black Sink Undercoating 2% 149 HQ-Heck-SU03-C Black Sink Undercoating 2% Green Countertop ND Brown Mastic ND Brown Countertop ND Brown Mastic ND Green Countertop ND Brown Mastic ND 157 HQ-Heck-VCM03-B 158 HQ-Heck-VCM03-C Green with white speckles vinyl countertop with brown mastic Black sink undercoat Media room, 15, 17, 21, 22 NF 15 SF 156 HQ-Heck-VCM03-A Room 10 NF 20 SF 145 HQ-Heck-CBM06-B 146 HQ-Heck-CBM06-C Brown 4 in. cove base with brown mastic NF 54 SF 144 HQ-Heck-CBM06-A H-2 NF 60 SF 143 HQ-Heck-VSF03-C Brown wood design vinyl sheet flooring, brown mastic Storage room C 141 HQ-Heck-VSF03-A 142 HQ-Heck-VSF03-B 140 HQ-Heck-DW05-C White medium grained drywall with yellowish paper Storage room C, Rooms 10- 23, H-2 NF 150 SF 138 HQ-Heck-DW05-A Friable 77,000 SF 137 HQ-Heck-CBM05-C Brown 4 in. cove base with beige mastic 8A, 8B, Storage room C, Rooms 13-17, 5, 6, 22, 24 135 HQ-Heck-CBM05-A 136 HQ-Heck-CBM05-B 7 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity Brown Baseboard ND Brown Mastic 1% Brown Baseboard ND Tan Mastic ND Brown Baseboard ND Beige Mastic ND Brown Mastic 1% Purple Countertop ND Brown Mastic ND Purple Countertop ND Brown Mastic ND Purple Countertop ND Brown Mastic ND Brown Fiberboard ND Brown Mastic ND Brown Fiberboard ND Brown Mastic ND Brown Fiberboard ND Brown Mastic ND 168 HQ-Heck-CK05-A Blue Caulk ND 169 HQ-Heck-CK05-B Blue Caulk ND 170 HQ-Heck-CK05-C Blue Caulk ND 171 HQ-Heck-CT06-A Brown Ceiling Tile with White Surface ND 172 HQ-Heck-CT06-B Brown Ceiling Tile with White Surface ND 173 HQ-Heck-CT06-C Brown Ceiling Tile with White Surface ND Tan Floor Tile ND Brown Floor Tile 5% Black Mastic ND Brown Floor Tile 5% Black Mastic ND Brown Floor Tile 5% Black Mastic ND Green Carpet ND Yellow Mortar ND Black Mastic ND Green Carpet ND Yellow Mortar ND Black Mastic ND Green Carpet ND Yellow Mortar ND NF 6,800 SF 179 HQ-Heck-CPM06-C Dark green carpet with multicolor diagonal streaks and speckles, brown mastic Rooms 3-5, 11-13, 15 177 HQ-Heck-CPM06-A 178 HQ-Heck-CPM06-B 175 HQ-Heck-VFT14-B 176 HQ-Heck-VFT14-C Gray beige with red streaks 9-by-9 in. vinyl floor tiles, black mastic White 12-by-12 in. ceiling tiles with two sizes of holes Room 1 Bathroom, 1, 2, 5, 6, Rooms 10-15 NF 7,440 SF 174 HQ-Heck-VFT14-A Rooms 3-5, 10, Room 3 and 4 bathrooms NF 2,300 SF NF 800 SF Blue brittle hard caulk along AC unit seams Rooms 1-6, 10-15 NF 15 SF 167 HQ-Heck-WB01-C Brown plywood wall board with brown mastic Rooms 1-6, 10-14 165 HQ-Heck-WB01-A 166 HQ-Heck-WB01-B 163 HQ-Heck-VCM04-B 164 HQ-Heck-VCM04-C Purple blue vinyl countertop with brown mastic NF 30 SF 162 HQ-Heck-VCM04-A Rooms 1-6, 10-15 NF 250 SF 161 HQ-Heck-CBM07-C Brown 4 in. cove base with brown mastic Janitor 159 HQ-Heck-CBM07-A 160 HQ-Heck-CBM07-B 8 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity 180 HQ-Heck-CT07-A Beige Ceiling Tile with White Surface ND 181 HQ-Heck-CT07-B Tan Ceiling Tile with White Surface ND 182 HQ-Heck-CT07-C Beige Ceiling Tile with White Surface ND Beige Floor Tile ND Brown Mastic ND Beige Floor Tile ND Brown Mastic ND Beige Floor Tile ND Brown Mastic ND Blue Countertop ND Beige Mastic ND Blue Countertop ND Beige Mastic ND Blue Countertop ND Beige Mastic ND Brown Carpet ND Beige Mastic ND Brown Carpet ND Beige Mastic ND Brown Carpet ND Beige Mastic ND Beige Floor Tile ND Black Mastic ND Beige Floor Tile ND Black Mastic ND Beige Floor Tile ND Black Mastic ND Gray Carpet ND Black Mastic ND Gray Carpet ND Beige Mastic ND Gray Carpet ND Beige Mastic ND Brown Fiberboard ND Green Chalkboard 7% Brown Fiberboard ND Green Chalkboard 7% Brown Fiberboard ND Green Chalkboard 7% 199 HQ-Heck-WB02-B 200 HQ-Heck-WB02-C Brown painted white wall board with beige mastic and green chalkboard NF 700 SF 198 HQ-Heck-WB02-A Room 15 NF 150 SF 197 HQ-Heck-CPM08-C Green-brown 2-by-2 ft. carpet squares with blue and brown streaks with brown mastic Room 15 195 HQ-Heck-CPM08-A 196 HQ-Heck-CPM08-B 193 HQ-Heck-VFT06-B 194 HQ-Heck-VFT06-C Dark beige with multicolor swirl splotches, 12-by-12 in. vinyl floor tile brown mastic NF 100 SF 192 HQ-Heck-VFT06-A Rooms 1, 2, 12, 14, Room 1 bathroom NF 2,000 SF 191 HQ-Heck-CPM07-C Reddish brown carpet with beige mastic Room 15 189 HQ-Heck-CPM07-A 190 HQ-Heck-CPM07-B 187 HQ-Heck-VCM05-B 188 HQ-Heck-VCM05-C Blue vinyl countertop with beige mastic NF 2,000 SF 186 HQ-Heck-VCM05-A Room 1 bathroom, 1, 2, 12, 14 NF 9,200 SF 185 HQ-Heck-VFT05-C Beige 12-by-12 in. vinyl floor tile with gray and white splotch streaks, brown mastic Rooms 12, 14 183 HQ-Heck-VFT05-A 184 HQ-Heck-VFT05-B White 2-by-4 ft. ceiling tiles with brown unidirectional squiggles Rooms 18, 18.5, 19 NF 2,000 SF 9 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity Gray Carpet ND Brown Mastic ND Gray Carpet ND Brown Mastic ND Gray Carpet ND Brown Mastic ND Green Countertop ND Brown Mastic ND Green Countertop ND Brown Mastic ND Green Countertop ND Brown Mastic ND 207 HQ-Heck-CK06-A White Caulk ND 208 HQ-Heck-CK06-B White Caulk ND 209 HQ-Heck-CK06-C White Caulk ND Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Gray Sheet Flooring with Fibrous Backing ND Tan Mastic ND Brown Mastic ND Gray Sheet Flooring with Fibrous Backing ND Tan Mastic ND Brown Mastic ND Gray Sheet Flooring with Fibrous Backing ND Tan Mastic ND Brown Mastic ND Beige Wallpaper ND Gray Fibrous Material ND Beige Wallpaper ND Gray Fibrous Material ND Beige Wallpaper ND Gray Fibrous Material ND 220 HQ-Heck-WPR01-B 221 HQ-Heck-WPR01-C Beige & brown splotch wallpaper NF 50 SF 219 HQ-Heck-WPR01-A Room 18 NF 200 SF 215 HQ-Heck-VSF05-C Light gray giraffe pattern vinyl sheet floor, brown mastic Room 1 and 2 bathrooms 213 HQ-Heck-VSF05-A 214 HQ-Heck-VSF05-B 211 HQ-Heck-VSF04-B 212 HQ-Heck-VSF04-C Gray stone pattern sheet flooring with brown mastic White thick hard caulk around doors Rooms 14, 17, 18E, 22, 23 NF 10 SF 210 HQ-Heck-VSF04-A Room 17B NF 29 SF 205 HQ-Heck-VCM06-B 206 HQ-Heck-VCM06-C Green marble pattern vinyl countertop with brown mastic NF 200 SF 204 HQ-Heck-VCM06-A Room 17, 18 NF 200 SF 203 HQ-Heck-CPM09-C Gray carpet with beige and brown speckles with brown mastic Room 15 201 HQ-Heck-CPM09-A 202 HQ-Heck-CPM09-B 10 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity Beige Countertop ND Brown Mastic ND Beige Countertop ND Brown Mastic ND Beige Countertop ND Brown Mastic ND 228 HQ-Heck-WP02-A Gray Non-Fibrous Material (Padding) ND 229 HQ-Heck-WP02-B Gray Non-Fibrous Material (Padding) ND 230 HQ-Heck-WP02-C Gray Non-Fibrous Material (Padding) ND Red Carpet ND Tan Mastic ND Red Carpet ND Tan Mastic ND Red Carpet ND Tan Mastic ND Red Carpet ND Tan Mastic ND Red Carpet ND Tan Mastic ND Red Carpet ND Tan Mastic ND Pink Ceramic Tile ND White Grout ND Pink Ceramic Tile ND White Grout ND Pink Ceramic Tile ND White Grout ND Beige Floor Tile ND Brown Mastic ND Black Mastic 2% Beige Floor Tile ND Brown Mastic ND Black Mastic (Trace) 2% Beige Floor Tile ND Brown Mastic ND Beige Floor Tile 2% Brown Mastic ND Beige Floor Tile ND Brown Mastic ND Beige Floor Tile 2% Brown Mastic ND NF 500 SF 245 HQ-Heck-VFT08-C Beige 12-by-12 in. with red streaks vinyl floor tile with brown mastic Rooms 6, 22 243 HQ-Heck-VFT08-A 244 HQ-Heck-VFT08-B 241 HQ-Heck-VFT07-B 242 HQ-Heck-VFT07-C Gray 2-by-2 ft. with beige splotches vinyl floor tile, brown mastic NF 25 SF 240 HQ-Heck-VFT07-A Room 15 NF 144 SF 239 HQ-Heck-CWT02-C Pink square ceramic wall tile with white grout Room 6 closet 237 HQ-Heck-CWT02-A 238 HQ-Heck-CWT02-B 235 HQ-Heck-CPM11-B 236 HQ-Heck-CPM11-C Red carpet with diamond pattern, tan mastic NF 80 SF 234 HQ-Heck-CPM11-A Room 6 closet walls NF 60 SF 233 HQ-Heck-CPM10-C Red carpet with diamond pattern, tan mastic Room 6 closet floor 231 HQ-Heck-CPM10-A 232 HQ-Heck-CPM10-B NF 10 SF Blue wall padding with brown mastic Room 19C NF 200 SF 227 HQ-Heck-VCM07-C Beige with speckle vinyl counter top with brown mastic Room 19 225 HQ-Heck-VCM07-A 226 HQ-Heck-VCM07-B 11 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity Multicolored Carpet ND Tan Mastic ND Black Mastic 2% Multicolored Carpet ND Tan Mastic ND Black Mastic 2% Multicolored Carpet ND Tan Mastic ND Black Cove Base ND Beige Mastic ND Black Cove Base ND Beige Mastic ND White Compound ND Black Cove Base ND Beige Mastic ND White Compound 1% Brown Countertop ND Brown Mastic ND Brown Countertop ND Brown Mastic ND Brown Countertop ND Brown Mastic ND 255 HQ-Heck-CK07-A White Caulk ND 256 HQ-Heck-CK07-B White Caulk ND 257 HQ-Heck-CK07-C White Caulk ND Multicolored Carpet ND Tan Mastic ND Multicolored Carpet ND Tan Mastic ND Multicolored Carpet ND Tan Mastic ND Gray Floor Tile ND Black/Yellow Mastic ND Gray Floor Tile ND Black/Yellow Mastic ND Gray Floor Tile ND Black/Yellow Mastic ND NF 1 SF 263 HQ-Heck-VFT09-C Beige and gray vinyl floor tile with white and brown wave pattern, brown mastic Room 5 261 HQ-Heck-VFT09-A 262 HQ-Heck-VFT09-B 259 HQ-Heck-CPM13-B 260 HQ-Heck-CPM13-C Multi-color linear carpet (blue, green, brown, red) tan mastic White hard caulk around bottom of doorway H-3 NF 1 SF 258 HQ-Heck-CPM13-A Room 23 NF 800 SF 253 HQ-Heck-VCM08-B 254 HQ-Heck-VCM08-C Beige vinyl countertop with brown mastic NF 100 SF 252 HQ-Heck-VCM08-A Rooms 21, 22 NF 200 SF 251 HQ-Heck-CBM08-C Black 6 in. cove base with beige mastic Room 1 Bathroom, Rooms 1, 21, 24, H-1 249 HQ-Heck-CBM08-A 250 HQ-Heck-CBM08-B 247 HQ-Heck-CPM12-B 248 HQ-Heck-CPM12-C Blue with purple and pink speckle carpet with tan mastic 246 HQ-Heck-CPM12-A Room 21, 24 NF 2,000 SF 12 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity White Joint Compound ND White Drywall with Brown Paper ND White Joint Compound ND White Drywall with Brown Paper ND White Joint Compound ND White Drywall with Brown Paper ND 267 HQ-Heck-SU04-A White Sink Undercoating ND 268 HQ-Heck-SU04-B White Sink Undercoating ND 269 HQ-Heck-SU04-C White Sink Undercoating ND 270 HQ-Heck-VCM09-A Brown Mastic ND 271 HQ-Heck-VCM09-B Brown Mastic ND 272 HQ-Heck-VCM09-C Brown Mastic ND White Floor Tile ND Brown Mastic 3% White Floor Tile ND Brown Mastic 3% White Floor Tile ND Brown Mastic 3% Gray Carpet Tile ND Brown Mastic ND Gray Leveling Compound ND Gray Carpet Tile ND Brown Mastic ND Gray Leveling Compound ND Gray Carpet Tile ND Brown Mastic ND Gray Carpet Tile ND Green Mastic ND Black Mastic ND Gray Leveling Compound ND Gray Carpet Tile ND Green Mastic ND Black Mastic ND Gray Leveling Compound ND Gray Carpet Tile ND Green Mastic ND Black Mastic ND Gray Leveling Compound ND NF 800 SF 281 HQ-Heck-CPM15-C Brown and gray linear pattern 2- by-2 ft. carpet squares, brown mastic Room 2 279 HQ-Heck-CPM15-A 280 HQ-Heck-CPM15-B 277 HQ-Heck-CPM14-B 278 HQ-Heck-CPM14-C Dark blue 2-by-2 ft. square carpet tiles with linear striping, brown mastic NF 32 SF 276 HQ-Heck-CPM14-A H-1 NF 374 SF 275 HQ-Heck-VFT10-C White 12-by-12 in. vinyl floor tile with blue splotches, brown mastic Rooms 22 and 23 bathrooms 273 HQ-Heck-VFT10-A 274 HQ-Heck-VFT10-B White and blue sink undercoat Rooms 23, 24 NF 8 SF Beige and peach vinyl countertop, speckled, brown mastic Rooms 23, 24 NF 64 SF 265 HQ-Heck-DW06-B 266 HQ-Heck-DW06-C White small grained thin drywall layers 264 HQ-Heck-DW06-A Throughout all bathrooms and classrooms Friable 10,000 SF 13 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity Beige Sheet Flooring with Fibrous Backing ND Brown Mastic ND Beige Sheet Flooring with Fibrous Backing ND Brown Mastic ND Beige Sheet Flooring with Fibrous Backing ND Brown Mastic ND Brown Cove Base ND Beige Mastic ND Brown Cove Base ND Beige Mastic ND Brown Cove Base ND Beige Mastic ND Beige Sheet Flooring with Fibrous Backing ND Beige Mastic ND Tan Floor Tile (Trace) 3% Beige Sheet Flooring with Fibrous Backing ND Beige Mastic ND Beige Sheet Flooring with Fibrous Backing ND Beige Mastic ND White Sheet Flooring with Fibrous Backing ND Brown Mastic ND White Floor Tile ND Yellow Mastic ND White Floor Tile ND Brown Mastic ND White Floor Tile ND Brown Mastic ND Gray Leveling Compound ND Tan Floor Tile 5% Black Mastic ND Tan Floor Tile 5% Black Mastic ND Tan Floor Tile 5% Black Mastic ND 303 HQ-Heck-CON05-A Gray Cementitious Material ND 304 HQ-Heck-CON05-B Gray Cementitious Material ND 305 HQ-Heck-CON05-C Gray Cementitious Material ND 306 HQ-Heck-CON06-A Gray Concrete ND 307 HQ-Heck-CON06-B Gray Concrete ND 308 HQ-Heck-CON06-C Gray Concrete ND Gray medium mineral Exterior ramp/walkway NF 200 SF Light gray white concrete pad with large mineral Exterior ramp/walkway NF 50 SF 301 HQ-Heck-VFT12-B 302 HQ-Heck-VFT12-C Beige tan 9-by-9 in. vinyl floor tiles, brown mastic NF 32 SF 300 HQ-Heck-VFT12-A Room 3 and 4 bathrooms NF 27 SF 299 HQ-Heck-VFT11-C White 12-by-12 in. vinyl floor tile with blue and brown splotches, brown mastic Room 23 bathroom 297 HQ-Heck-VFT11-A 298 HQ-Heck-VFT11-B 295 HQ-Heck-VSF07-B 296 HQ-Heck-VSF07-C Multi-color stone pattern vinyl sheet flooring, beige mastic NF 16 SF 294 HQ-Heck-VSF07-A Room 3 and 4 bathrooms NF 24 SF 290 HQ-Heck-CBM09-C Brown 6 in. cove base with beige mastic Room 24 288 HQ-Heck-CBM09-A 289 HQ-Heck-CBM09-B 286 HQ-Heck-VSF06-B 287 HQ-Heck-VSF06-C Beige tan marble stone pattern vinyl sheet flooring, brown mastic 285 HQ-Heck-VSF06-A Room 24 and 24 bathroom NF 26 SF 14 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity 309 HQ-Heck-FCB01-A Gray Felt ND 310 HQ-Heck-FCB01-B Gray Felt ND 311 HQ-Heck-FCB01-C Gray Felt ND 312 HQ-Heck-CON07-A Gray Concrete ND 313 HQ-Heck-CON07-B Gray Concrete ND 314 HQ-Heck-CON07-C Gray Concrete ND 315 HQ-Heck-CK08-A White Caulk ND 316 HQ-Heck-CK08-B White Caulk ND 317 HQ-Heck-CK08-C White Caulk ND White Non-Fibrous Material (Walllbaord) 1% Gray Non-Fibrous Material (Wallboard) 10% 319 HQ-Heck-WB03-B Gray Non-Fibrous Material (Wallboard) 10% White Non-Fibrous Material (Walllbaord) 1% Gray Non-Fibrous Material (Wallboard) 10% 321 HQ-Heck-CK09-A White Caulk ND 322 HQ-Heck-CK09-B White Caulk ND 323 HQ-Heck-CK09-C White Caulk ND 324 HQ-Heck-WB04-A Gray Non-Fibrous Material (Wallboard) ND 325 HQ-Heck-WB04-B Gray Non-Fibrous Material (Wallboard) ND 326 HQ-Heck-WB04-C Gray Non-Fibrous Material (Wallboard) ND 327 HQ-Heck-ASP01-A Black Asphalt ND 328 HQ-Heck-ASP01-B Black Asphalt ND 329 HQ-Heck-ASP01-C Black Asphalt ND 330 HQ-Heck-VB01-A Black Vapor Barrier ND 331 HQ-Heck-VB01-B Black Vapor Barrier ND 332 HQ-Heck-VB01-C Black Vapor Barrier ND White Caulk ND Brown Wood ND White Caulk ND Brown Wood ND White Caulk ND Brown Wood ND White Sealant ND Black Mastic ND White Sealant ND Black Mastic ND White Sealant ND Black Mastic ND 337 HQ-Heck-PS01-B 338 HQ-Heck-PS01-C White thick penetrating sealant NF 100 SF 336 HQ-Heck-PS01-A Exterior around tubing on SW side of building NF 600 SF 335 HQ-Heck-CK10-C White painted caulk Exterior around roof to wall seams 333 HQ-Heck-CK10-A 334 HQ-Heck-CK10-B Black asphalt Exterior NF 350 SF Black roof vapor barrier Roof NF 10,000 SF White tan caulk Exterior windows southwest side of building NF 225 SF White verticle wood wall board Exterior building southwest side NF 2 SF 320 HQ-Heck-WB03-C Brown painted wooden/plywood wall board Exterior on top of concrete White brittle caulk Exterior around vents NF 250 SF 318 HQ-Heck-WB03-A NF 200 SF Black felt concrete barrier Exterior entrance NF 75 SF Gray concrete foundation Exterior NF 10,000 SF 15 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity 339 HQ-Heck-RS01-A Black Roofing Felt ND 340 HQ-Heck-RS01-B Black Roofing Felt ND 341 HQ-Heck-RS01-C Black Roofing Felt ND 342 HQ-Heck-CON08-A Dark Gray Concrete ND 343 HQ-Heck-CON08-B Dark Gray Concrete ND 344 HQ-Heck-CON08-C Dark Gray Concrete ND 345 HQ-Heck-CON09-A Dark Gray Concrete ND 346 HQ-Heck-CON09-B Dark Gray Concrete ND 347 HQ-Heck-CON09-C Dark Gray Concrete ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND NF 15 SF 353 HQ-Heck-PIW04-C White 10 in. pipe insulation Boiler room 351 HQ-Heck-PIW04-A 352 HQ-Heck-PIW04-B 349 HQ-Heck-PIW03-B 350 HQ-Heck-PIW03-C White 13 in. pipe insulation Gray concrete with pink paint and very large mineral Exterior next to door, parking blocks NF 115 SF 348 HQ-Heck-PIW03-A Boiler room NF 15 SF Black roofing system Roof NF 10,000 SF Dark gray concrete pad with large mineral Exterior door pads NF 250 SF 16 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND NF 50 SF 365 HQ-Heck-PIW08-C White 5 in. pipe insulation Boiler room 363 HQ-Heck-PIW08-A 364 HQ-Heck-PIW08-B 361 HQ-Heck-PIW07-B 362 HQ-Heck-PIW07-C White 3 in. pipe insulation NF 10 SF 360 HQ-Heck-PIW07-A Boiler room NF 500 SF 359 HQ-Heck-PIW06-C White 20 in. pipe insulation Boiler room 357 HQ-Heck-PIW06-A 358 HQ-Heck-PIW06-B 355 HQ-Heck-PIW05-B 356 HQ-Heck-PIW05-C White 7 in. pipe insulation 354 HQ-Heck-PIW05-A Boiler room NF 10 SF 17 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Silver Tape ND White Paper ND Yellow Insulation ND Cream Tape ND Yellow Insulation ND Cream Tape ND Yellow Insulation ND Cream Tape ND Yellow Insulation ND White Coating ND Gray Mortar ND White Coating ND Gray Mortar ND White Coating ND Gray Mortar ND 375 HQ-Heck-CON10-A Gray Concrete ND 376 HQ-Heck-CON10-B Gray Concrete ND 377 HQ-Heck-CON10-C Gray Concrete ND Off-White Joint Compound with Paint ND Cream Tape ND Off-White Joint Compound ND White Drywall with Brown Paper ND Off-White Joint Compound with Paint ND White Drywall with Brown Paper ND Off-White Joint Compound with Paint ND White Drywall with Brown Paper ND 379 HQ-Heck-DW07-B 380 HQ-Heck-DW07-C White fine grained dry wall Gray concrete floor Boiler room NF 432 SF 378 HQ-Heck-DW07-A Boiler room Friable 142 SF 373 HQ-Heck-CMU01-B 374 HQ-Heck-CMU01-C White CMU block mortar NF 25 SF 372 HQ-Heck-CMU01-A Boiler room NF 100 SF 371 HQ-Heck-BI01-C White boiler insulation Boiler room 369 HQ-Heck-BI01-A 370 HQ-Heck-BI01-B 367 HQ-Heck-PIW09-B 368 HQ-Heck-PIW09-C White 4 in. pipe insulation 366 HQ-Heck-PIW09-A Boiler room NF 500 SF 18 of 19 TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity White Ceramic Tile ND White Grout ND White Adhesive ND White Ceramic Tile ND White Grout ND White Adhesive ND White Ceramic Tile ND White Grout ND White Adhesive ND Cream Sheet Flooring ND Yellow Adhesive ND Cream Sheet Flooring ND Yellow Adhesive ND Gray Leveling Compound ND Gray Concrete ND Cream Sheet Flooring ND Yellow Adhesive ND Gray Leveling Compound ND Green Ceramic Tile ND White Grout ND Green Ceramic Tile ND White Grout ND Green Ceramic Tile ND White Grout ND Gray Floor Tile 3% Brown Mastic 4% Gray Floor Tile 3% Brown Mastic 4% Gray Floor Tile 3% Brown Mastic 4% 391 HQ-Heck-VFT13-B 392 HQ-Heck-VFT13-C Gray with crayon color streaks, brown mastic NF 5 SF 390 HQ-Heck-VFT13-A Room 4 bathroom NF 3 SF 389 HQ-Heck-CWT04-C Dark green square ceramic wall tile, white grout Room 6 bathroom 387 HQ-Heck-CWT04-A 388 HQ-Heck-CWT04-B 385 HQ-Heck-VSF08-B 386 HQ-Heck-VSF08-C Cream multicolor splotchy vinyl sheet flooring, tan mastic NF 50 SF 384 HQ-Heck-VSF08-A Room 6 bathroom NF 60 SF 383 HQ-Heck-CWT03-C White square ceramic wall tile, white grout Room 6 bathroom 381 HQ-Heck-CWT03-A 382 HQ-Heck-CWT03-B Notes: Bolded and highlighted results indicate that ACM was detected AHERA defines ACM as any material or product that contains more than 1% asbestos (AHERA 1986) ACM AHERA ft. ND NF PLM % 19 of 19 SF Asbestos-containing material Asbestos Hazard and Emergency Response Act Concrete masonry unit Feet Identification Inches Not detected Non-friable Polarized light spectroscopy Percent Square feet TABLE 1A: SUMMARY OF ACM ANALYTICAL RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) CMU in. ID ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT Table 1B: Summary of ACM Analytical Results – IT Building ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity (SF) 1 HQ-Heck_IT-CT01-A White Ceiling Tile ND NF 2 HQ-Heck_IT-CT01-B White Ceiling Tile ND NF 3 HQ-Heck_IT-CT01-C White Ceiling Tile ND NF 4 HQ-Heck_IT-CT02-A White Ceiling Tile ND NF 5 HQ-Heck_IT-CT02-B White Ceiling Tile ND NF 6 HQ-Heck_IT-CT02-C White Ceiling Tile ND NF 7 HQ-Heck_IT-CT03-A White Ceiling Tile ND NF 8 HQ-Heck_IT-CT03-B White Ceiling Tile ND NF 9 HQ-Heck_IT-CT03-C White Ceiling Tile ND NF 10 White Joint Compound with White Paint ND NF 10 Peach Drywall with Brown Paper ND NF 11 White Joint Compound with White Paint ND NF 11 Peach Drywall with Brown Paper ND NF 12 White Joint Compound with White Paint ND NF 12 Peach Drywall with Brown Paper ND NF 390 90 90 2,000 HQ-Heck_IT-DW01-C HQ-Heck_IT-DW01-B HQ-Heck_IT-DW01-A Peach small grain drywall with white paper IT throughout White 2-by-4 ft. cut unidirectinal squiggle drop ceiling tiles IT1 White 2-by-4 ft. various depth cut multidirectional squiggle drop ceiling tiles IT1 White 2-by-4 ft. multidirectional squiggle and dot drop ceiling IT1 1 of 3 TABLE 1B: SUMMARY OF ACM ANALYTICAL RESULTS – IT BUILDING ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity (SF) 13 Multicolored Carpet ND NF 13 White Fibrous Material (Mesh) ND NF 13 White Mastic ND NF 14 Multicolored Carpet ND NF 14 White Fibrous Material (Mesh) ND NF 14 White Mastic ND NF 15 Multicolored Carpet ND NF 15 White Fibrous Material (Mesh) ND NF 15 White Mastic ND NF 16 Dark Brown Baseboard ND NF 16 Beige Mastic ND NF 16 White Compound ND NF 17 Dark Brown Baseboard ND NF 17 Beige Mastic ND NF 17 White Compound ND NF 18 Dark Brown Baseboard ND NF 18 Beige Mastic ND NF 18 White Compound ND NF 19 HQ-Heck_IT-CT04-A White Ceiling Tile ND NF 20 HQ-Heck_IT-CT04-B White Ceiling Tile ND NF 21 HQ-Heck_IT-CT04-C White Ceiling Tile ND NF 260 1,250 200 HQ-Heck_IT-CBM01-B HQ-Heck_IT-CBM01-C Brown 4 in. cove base with beige mastic IT throughout White 12-by-12 in. ceiling tiles Server room, Kitchen HQ-Heck_IT-CPM01-B HQ-Heck_IT-CPM01-C Brown and tan, and green cross stitch carpet with brown mastic IT throughout HQ-Heck_IT-CBM01-A HQ-Heck_IT-CPM01-A 2 of 3 TABLE 1B: SUMMARY OF ACM ANALYTICAL RESULTS – IT BUILDING (CONT.) ---PAGE BREAK--- Sample Number Sample ID Material Description Material Layers Material Locations Analytical PLM Result asbestos) Friability Quantity (SF) 22 HQ-Heck_IT-WB01-A Beige Wood Wall Board with Paint ND NF 23 HQ-Heck_IT-WB01-B Beige Wood Wall Board with Paint ND NF 24 HQ-Heck_IT-WB01-C Beige Wood Wall Board with Paint ND NF 25 White Insulation ND NF 25 Brown/Black Paper ND NF 26 White Insulation ND NF 26 Brown/Black Paper ND NF 27 HQ-Heck_IT-INS01-C White Insulation ND NF 215 2,000 Brown wooden wall board painted white Server room HQ-Heck_IT-INS01-A HQ-Heck_IT-INS01-B White insulation brown paper IT throughout walls 3 of 3 Notes: ft. Feet ID Identification in. Inch IT Information Technology ND Not detected NF Non-friable PLM Polarized Light Microscopy SF Square feet % Percent TABLE 1B: SUMMARY OF ACM ANALYTICAL RESULTS – IT BUILDING (CONT.) ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT Table 2A: Summary of Lead-Based Paint Screening Results – Former Heck Elementary School Building ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 99 Test 1.1 100 Test 1.2 101 Test 1.2 102 Test 1.0 103 Test 1.1 104 Test 1.0 105 Cream Room 1 Door Frame B Wood 0.5 No 106 Cream Room 1 Door B Wood 1.4 No 107 Cream Room 1 Wall B Particle Board 0.7 No 108 Cream Room 1 Window Frame B Wood 1.4 No 109 Cream Room 1 Wall B Particle Board 1.6 No 110 Cream Room 1 Window B Wood 0.0 No 111 Cream Room 1 Wall B Particle Board 2.6 No 112 Cream Room 1 Trim C Wood 1.6 No 113 Cream Room 1 Wall C Particle Board 0.6 No 114 Cream Room 1 Wall C Particle Board 0.0 No 115 Blue Room 1 Ceiling Beams Concrete 2.6 No 116 Cream Room 1 Window Frame C Wood 0.0 No 117 Cream Room 1 Window C Wood 0.0 No 118 Green Room 1 Cabinets C Wood 0.0 No 119 Cream Room 1 Wall D Particle Board 0.4 No 120 Cream Room 1 Door Frame D Wood 0.1 No 121 Green Room 1 Door Stopper D Wood 0.1 No 122 Green Room 1 Locker Wood 0.1 No 123 Cream Room 1 Window Frame D Wood 0.1 No 124 Cream Room 1 Wall D Metal 0.4 No 125 Cream Room 1 Wall A Particle Board 0.7 No 126 Cream Room 1 Door Frame A Wood 0.6 No 127 Cream Room 1 Door Stopper A Wood 0.1 No 128 Cream Room 1 Door A Metal 0.0 No 129 Cream Room 1 Trim A Wood 0.3 No 130 Blue Room 1 Ceiling Beam Concrete AP No 131 Blue Room 1 Ceiling Beam Concrete AP No 132 Blue Room 1 Ceiling Beam Concrete AP No 133 Red Room 2 Wall B Metal 1.4 No 134 Cream Room 2 Door Frame B Wood 2.1 No 135 Cream Room 2 Wall B Particle Board 0.8 No 136 Cream Room 2 Window B Wood 0.0 No 137 Black Room 2 Wall B Particle Board 0.1 No 138 Cream Room 2 Wall C Particle Board 0.6 No 139 Cream Room 2 Door Frame C Wood 0.2 No 140 Cream Room 2 Door Stopper C Wood 0.0 No 141 Cream Room 2 Door C Metal 0.0 No 142 Cream Room 2 Door Frame D Wood 0.8 No 143 Cream Room 2 Door Stopper D Wood 0.1 No 144 Cream Room 2 Door D Wood 0.0 No 145 Cream Room 2 Locker D Wood 0.0 No 146 Cream Room 2 Window Frame D Wood 0.0 No 147 Cream Room 2 Wall D Particle Board 0.0 No 148 Cream Room 2 Wall D Metal 0.0 No TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING 1 of 16 ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 149 Green Room 2 Door Sopper D Wood 0.1 No 150 Cream Room 2 Wall A Particle Board 0.8 No 151 Blue Room 2 Ceiling Beam Concrete 3.1 No 152 Blue Room 2 Ceiling Beam Concrete AP No 153 Blue Room 2 Ceiling Beam Concrete AP No 154 Blue Room 2 Ceiling Beam Concrete AP No 155 Cream Room 2 Window Frame Ceiling Wood 0.0 No 156 Cream Room 2 Window Ceiling Wood 0.0 No 157 Cream Room 2 Wall B Concrete 2.0 No 158 Red Room 3 Door B Metal 2.0 No 159 Cream Room 3 Door Frame B Wood 2.1 No 160 Cream Room 3 Wall B Particle Board 0.9 No 161 Cream Room 3 Window B Wood 0.0 No 162 Cream Room 3 Beam B Concrete 2.0 No 163 Cream Room 3 Wall C Particle Board 0.6 No 164 Cream Room 3 Wall D Particle Board 0.0 No 165 Cream Room 3 Wall D Metal 0.0 No 166 Cream Room 3 Door Frame D Wood 0.0 No 167 Green Room 3 Door Stopper D Wood 0.1 No 168 Cream Room 3 Locker D Wood 0.1 No 169 Cream Room 3 Door Stopper D Wood 0.7 No 170 Cream Room 3 Door D Wood 0.0 No 171 Cream Room 3 Wall A Particle Board 0.8 No 172 Cream Room 3 Ceiling Beam Concrete 1.8 No 173 Cream Room 3 Ceiling Beam Concrete AP No 174 Cream Room 3 Ceiling Beam Concrete AP No 175 Cream Room 3 Ceiling Beam Concrete AP No 176 Cream Room 3 Window Frame Ceiling Wood 0.1 No 177 Cream Room 3 Window Ceiling Wood 0.0 No 178 Cream Room 4 Door B Metal 2.2 No 179 Cream Room 4 Door Frame B Wood 1.5 No 180 Cream Room 4 Wall B Particle Board 1.6 No 181 Cream Room 4 Window B Wood 0.0 No 182 Cream Room 4 Beam B Concrete 1.7 No 183 Cream Room 4 Trim B Wood 2.1 No 184 Cream Room 4 Wall C Particle Board 0.8 No 185 Cream Room 4 Door Frame C Wood 2.0 No 186 Cream Room 4 Door Stopper C Wood 0.8 No 187 Cream Room 4 Door C Wood 0.0 No 188 Cream Room 4 Door Frame D Wood 0.6 No 189 Cream Room 4 Door Stopper D Wood 0.7 No 190 Cream Room 4 Door D Wood 0.0 No 191 Cream Room 4 Wall D Particle Board 0.0 No 192 Cream Room 4 Locker D Wood 0.8 No 193 Cream Room 4 Trim D Wood 1.9 No 194 Cream Room 4 Door Frame D Wood 2.9 No 195 Green Room 4 Door Stopper D Wood 0.6 No 196 Cream Room 4 Wall D Particle Board 0.6 No 197 Cream Room 4 Ceiling Beam Concrete 1.8 No 198 Cream Room 4 Ceiling Beam Concrete AP No 199 Cream Room 4 Ceiling Beam Concrete AP No 2 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 200 Cream Room 4 Ceiling Beam Concrete AP No 201 Cream Room 4 Window Frame Ceiling Wood 0.0 No 202 Cream Room 4 Window Ceiling Wood 0.0 No 203 Cream Room 5 Door Frame B Wood 0.6 No 204 Green Room 5 Trim B Metal 2.0 No 205 Cream Room 5 Window Frame B Wood 2.6 No 206 Green Room 5 Trim B Wood 0.0 No 207 Green Room 5 Trim B Wood 1.9 No 208 Blue Room 5 Trim B Wood 1.3 No 209 Blue Room 5 Trim B Wood 1.5 No 210 Blue Room 5 Wall B Particle Board 0.0 No 211 Cream Room 5 Wall C Particle Board 0.7 No 212 Blue Room 5 Wall C Particle Board 0.6 No 213 Purple Room 5 Wall C Particle Board 0.0 No 214 Black Room 5 Wall C Particle Board 0.0 No 215 Cream Room 5 Wall D Particle Board 0.1 No 216 Cream Room 5 Door Frame D Wood 0.1 No 217 Green Room 5 Door Stopper D Wood 0.0 No 218 Cream Room 5 Locker D Wood 0.1 No 219 Cream Room 5 Trim D Wood 0.0 No 220 Cream Room 5 Wall D Metal 0.0 No 221 Blue Room 5 Door A Wood 0.0 No 222 Cream Room 5 Door Frame A Wood 1.2 No 223 Cream Room 5 Door Stopper A Wood 0.1 No 224 Cream Room 5 Wall A Particle Board 0.8 No 225 Blue Room 5 Wall A Particle Board 0.0 No 226 Green Room 5 Ceiling Beam Concrete 2.2 No 227 Green Room 5 Ceiling Beam Concrete AP No 228 Green Room 5 Ceiling Beam Concrete AP No 229 Green Room 5 Ceiling Beam Concrete AP No 230 Green Room 5 Window Frame Ceiling Wood 0.1 No 231 Green Room 5 Window Ceiling Wood 0.0 No 232 Green Room 5 Beam B Concrete 2.2 No 233 Green Room 6 Beam B Concrete 1.9 No 234 Blue Room 6 Door Frame B Concrete 0.6 No 235 Green Room 6 Door B Metal 1.2 No 236 Cream Room 6 Trim B Metal 1.2 No 237 Cream Room 6 Trim B Particle Board 0.0 No 238 Grey Room 6 Trim B Metal 0.2 No 239 Grey Room 6 Winwo Frame B Wood 0.0 No 240 Brown Room 6 Window Frame B Wood 0.0 No 241 Blue Room 6 Wall C Particle Board 0.6 No 242 Blue Room 6 Pillar C Particle Board 0.0 No 243 Blue Room 6 Ceiling Beam Concrete 1.6 No 244 Blue Room 6 Ceiling Beam Concrete AP No 245 Blue Room 6 Ceiling Beam Concrete AP No 246 Blue Room 6 Ceiling Beam Concrete AP No 247 Cream Room 6 Window Frame C Wood 0.0 No 248 Cream Room 6 Window C Wood 0.0 No 249 Cream Room 6 Door Frame C Particle Board 0.6 No 250 Cream Room 6 Door C Wood 0.7 No 3 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 251 Brown Room 6 Door Stopper C Wood 0.0 No 252 Cream Room 6 Door D Wood 0.1 No 253 Cream Room 6 Wall D Wood 0.0 No 254 Orange Room 6 Wall D Wood 0.0 No 255 Yellow Room 6 Wall D Wood 0.0 No 256 Black Room 6 Wall D Wood 0.0 No 257 Green Room 6 Wall D Wood 0.0 No 258 Blue Room 6 Wall D Wood 0.0 No 259 Cream Room 6 Door Frame D Wood 1.0 No 260 Cream Room 6 Door Stopper D Wood 0.0 No 261 Cream Room 6 Locker D Wood 0.0 No 262 Cream Room 6 Wall D Particle Board 0.0 No 263 Cream Room 6 Trim D Wood 0.1 No 264 Brown Room 6 Door Frame D Wood 0.1 No 265 Green Room 6 Door Stopper D Wood 0.0 No 266 Blue Room 6 Cabinets D Wood 0.0 No 267 Cream Room 6 Wall D Metal 0.0 No 268 Cream Room 6 Wall A Particle Board 0.8 No 269 White Room 6 Door Frame A Wood 0.0 No 270 White Room 6 Door Stopper A Wood 0.0 No 271 Green Room 6 Wall C Particle Board 0.0 No 272 Green Room 6 Wall D Particle Board 0.0 No 273 Green Room 6 Wall A Particle Board 0.0 No 274 Green Room 6 Wall B Particle Board 0.0 No 275 White Room 6 Vent B Metal 0.6 No 276 Green Room 6 Tile A Tile 0.0 No 277 White Room 6 Tile A Tile 0.0 No 278 White Room 6 Ceiling Drywall 0.5 No 279 White Room 6 Ceiling Concrete 2.3 No 280 Purple Room 6 Door Frame A Wood 0.0 No 281 Purple Room 6 Door A Wood 0.0 No 282 Orange Room 6 Door Stopper A Wood 0.0 No 283 Cream Storage room Wall D Drywall 0.0 No 284 Cream Storage room B Wall A Drywall 0.0 No 285 Cream Storage room B Wall B Drywall 0.6 No 286 Cream Storage room B Beam B Concrete 2.3 No 287 Tan Storage room B Tile B Tile 0.1 No 288 Cream Storage room B Wall C Drywall 0.0 No 289 Cream Storage room B Door Frame C Wood 0.0 No 290 Cream Storage room B Door Stopper C Wood 0.0 No 291 Cream Storage room B Door C Wood 0.0 No 292 Cream Storage room B Ceiling Drywall 0.1 No 293 Cream Storage room B Beam D Concrete 2.1 No 294 Green Room 6 Beam D Concrete 2.0 No 295 Blue Work Room Wall B Drywall 0.0 No 296 Blue Work Room Beam B Concrete 1.8 No 297 Blue Work Room Ceiling Drywall 0.5 No 298 Blue Work Room Wall C Drywall 0.6 No 299 Tan Work Room Wall C Tile 0.1 No 300 Blue Work Room Wall D Drywall 0.5 No 301 White Work Room Wall D Plastic 0.1 No 4 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 302 White Work Room Trim B Wood 0.0 No 303 Cream Work Room Door Frame D Wood 0.0 No 304 Green Work Room Door Stopper D Wood 0.0 No 305 Green Work Room Wall A Drywall 0.4 No 306 Grey Girls bathroom Wall B Drywall 0.0 No 307 Grey Girls bathroom Wall C Drywall 0.0 No 308 Grey Girls bathroom Wall D Drywall 0.0 No 309 Grey Girls bathroom Ceiling Concrete 1.9 No 310 Grey Girls bathroom Ceiling Particle Board 0.5 No 311 Grey Girls bathroom Ceiling Concrete 1.6 No 312 Blue Girls bathroom Window Frame Ceiling Wood 0.4 No 313 White Girls bathroom Door Frame A Wood 0.0 No 314 Wood Texture Girls bathroom Door Stopper A Wood 0.5 No 315 Cream Janitor Wall A Particle Board 0.0 No 316 Green Janitor Door Frame A Wood 0.0 No 317 Blue Janitor Ceiling Concrete 1.9 No 318 Cream Janitor Wall B Particle Board 0.0 No 319 Cream Janitor Ceiling Trim Wood 0.0 No 320 Cream Janitor Ceiling Concrete AP No 321 Cream Janitor Ceiling Concrete AP No 322 Cream Janitor Ceiling Concrete AP No 323 Cream Janitor Wall C Particle Board 0.0 No 324 Cream Janitor Door Frame C Wood 0.0 No 325 Cream Janitor Door Stopper C Wood 0.0 No 326 Grey Janitor Wall C Particle Board 0.3 No 327 Cream Janitor Wall D Particle Board 0.5 No 328 Cream Janitor Railing C Metal 0.2 No 329 White Basement Boiler Wall C Concrete 0.0 No 330 White Basement Boiler Ceiling Beam Concrete 0.0 No 331 White Basement Boiler Ceiling Beam Concrete 0.0 No 332 White Basement Boiler Ceiling Concrete 0.0 No 333 White Basement Boiler Wall D Concrete 0.0 No 334 Grey Basement Boiler Floor Concrete 0.0 No 335 White Basement Boiler Wall B Drywall 0.0 No 336 White Basement Boiler Pillar B Drywall 0.0 No 337 White Basement Boiler Wall A Drywall 0.0 No 338 Brown Basement Boiler Door Frame A Wood 0.0 No 339 White Basement Boiler Door Stopper A Wood 0.0 No 340 White Basement Boiler Wall A Concrete 0.0 No 341 White Basement Boiler Wall D Drywall 0.0 No 342 Grey Basement Boiler Wall A Concrete 0.1 No 343 Grey Basement Boiler Wall A Metal 0.0 No 344 White Basement Boiler Door Frame B Wood 0.0 No 345 Brown Basement Boiler Door B Wood 0.0 No 346 White Basement Boiler Wall B Concrete 0.0 No 347 White Basement Boiler Wall C Concrete 0.0 No 348 White Basement Boiler Wall D Concrete 0.0 No 349 White Basement Boiler Pillar D Concrete 0.0 No 350 White Basement Boiler Wall A Concrete 0.0 No 351 Grey Boys Bathroom Wall C Drywall 0.0 No 352 Grey Boys Bathroom Wall D Drywall 0.0 No 5 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 353 Grey Boys Bathroom Wall B Drywall 0.0 No 354 White Boys Bathroom Ceiling Drywall 0.7 No 355 White Boys Bathroom Ceiling Beam Concrete 2.3 No 356 White Boys Bathroom Ceiling Beam Concrete AP No 357 White Boys Bathroom Wall A Drywall 0.0 No 358 Grey Boys Bathroom Beam B Concrete 1.7 No 359 Grey Boys Bathroom Window Frame B Wood 0.7 No 360 White Boys Bathroom Door Frame C Wood 0.0 No 361 White Boys Bathroom Door C Wood 0.0 No 362 White Boys Bathroom Door Stopper C Wood 0.0 No 363 Yellow Boys Bathroom Beam B Concrete 1.7 No 364 Yellow Boys Bathroom Window Frame B Wood 0.6 No 365 Yellow Boys Bathroom Ceiling Particle Board 0.8 No 366 Yellow Boys Bathroom Wall B Particle Board 0.5 No 367 Yellow Boys Bathroom Wall C Drywall 0.0 No 368 Yellow Boys Bathroom Wall D Drywall 0.0 No 369 Yellow Boys Bathroom Wall A Drywall 0.0 No 370 Yellow Boys Bathroom Door Frame A Wood 0.0 No 371 Yellow Boys Bathroom Beam D Concrete 1.9 No 372 Grey Room 20 (Media Room) Ceiling Drywall 0.0 No 373 Grey Room 20 (Media Room) Wall C Drywall 0.0 No 374 Grey Room 20 (Media Room) Wall D Concrete 0.0 No 375 Brown Room 20 (Media Room) Window Frame D Wood 0.0 No 376 Green Room 20 (Media Room) Wall A Concrete 0.1 No 377 Cream Room 20 (Media Room) Wall B Drywall 0.0 No 378 Cream Room 20 (Media Room) Wall A Drywall 0.0 No 379 Cream Room 20 (Media Room) Door Frame A Wood 0.0 No 380 Green Room 20 (Media Room) Door Stopper A Wood 0.0 No 381 Cream Room 20 (Media Room) Door A Metal 0.0 No 382 Red Room 20 (Media Room) Door A Metal 0.1 No 383 Cream Room 20 (Media Room) Ceiling Drywall 0.0 No 384 Cream Room 20 (Media Room) Door B Drywall 0.0 No 385 Cream Room 20 (Media Room) Door Frame C Metal 0.0 No 386 Cream Room 20 (Media Room) Door C Metal 0.0 No 387 Green Room 20 (Media Room) Door Stopper C Metal 0.0 No 388 Cream Room 20 (Media Room) Wall B Metal 0.0 No 389 White Room 21 Wall C Drywall 0.0 No 390 White Room 21 Wall D Concrete 0.0 No 391 Brown Room 21 Window Frame D Wood 0.0 No 392 Cream Room 21 Ceiling Drywall 0.0 No 393 Cream Room 21 Wall A Drywall 0.0 No 394 Yellow Room 21 Cabinets A Particle Board 1.1 No 395 Cream Room 21 Ceiling Drywall 0.0 No 396 Cream Room 21 Wall A Metal 0.0 No 397 Brown Room 21 Door Frame B Wood 0.0 No 398 Brown Room 21 Wall B Drywall 0.0 No 399 White Room 21 Trim B Wood 0.0 No 400 Cream Room 21 Door B Metal 0.1 No 401 Green Room 21 Door Stopper B Metal 0.0 No 402 Cream Room 21 Door B Metal 0.0 No 403 Cream Room 22 Wall D Concrete 0.0 No 6 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 404 Red Room 22 Door D Metal 0.1 No 405 Brown Room 22 Window Frame D Wood 0.0 No 406 Cream Room 22 Ceiling Drywall 0.0 No 407 Cream Room 22 Wall A Drywall 0.0 No 408 Cream Room 22 Door A Metal 0.0 No 409 Cream Room 22 Wall B Drywall 0.0 No 410 Cream Room 22 Wall B Concrete 0.1 No 411 Cream Room 22 Ceiling Drywall 0.0 No 412 Green Room 22 Door Stopper B Wood 0.0 No 413 Brown Room 22 Door Frame B Wood 0.0 No 414 Cream Room 22 Wall C Concrete 0.0 No 415 White Room 22 Trim C Wood 0.0 No 416 Yellow Room 22 Cabinet C Particle Board 1.2 No 417 Cream Room 23 Wall C Drywall 0.0 No 418 Cream Room 23 Wall D Concrete 0.0 No 419 Brown Room 23 Window Frame D Wood 0.0 No 420 Cream Room 23 Ceiling Drywall 0.0 No 421 Cream Room 23 Wall D Metal 0.0 No 422 Cream Room 23 Wall A Concrete 0.0 No 423 Brown Room 23 Door Frame C Wood 0.0 No 424 Green Room 23 Door Stopper C Wood 0.0 No 425 Cream Room 23 Door C Metal 0.0 No 426 Cream Room 23 Wall C Drywall 0.0 No 427 Cream Room 23 Wall D Drywall 0.0 No 428 Cream Room 24 Wall C Concrete 0.0 No 429 Cream Room 25 Wall D Concrete 0.0 No 430 Cream Room 26 Door D Metal 0.0 No 431 Cream Room 27 Ceiling Drywall 0.0 No 432 Brown Room 28 Window Frame D Wood 0.0 No 433 Cream Room 29 Wall A Drywall 0.0 No 434 Cream Room 30 Wall B Drywall 0.0 No 435 Cream Room 31 Wall D Drywall 0.0 No 436 Cream Room 32 Wall B Drywall 0.0 No 437 Green Room 33 Door Stopper C Metal 0.0 No 438 Brown Room 34 Door Frame B Wood 0.0 No 439 Brown Room 35 Door Stopper B Wood 0.0 No 440 Test 1.1 441 Test 1.1 442 Test 1.1 443 Test 1.1 444 Test 1.1 445 Test 1.1 446 Cream Multi Purpose Window Frame Ceiling Wood 0.0 No 447 Cream Multi Purpose Ceiling Particle Board 0.0 No 448 Yellow Multi Purpose Pillar D Concrete 2.4 No 449 Blue Multi Purpose Pillar D Concrete 1.5 No 450 Blue Multi Purpose Pillar D Concrete AP No 451 Blue Multi Purpose Pillar D Concrete AP No 452 Blue Multi Purpose Pillar D Concrete AP No 453 Blue Multi Purpose Pillar D Concrete AP No 454 Orange Multi Purpose Pillar D Concrete 1.6 No 7 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 455 Green Multi Purpose Pillar D Concrete 2.7 No 456 Light Blue Multi Purpose Pillar D Concrete 1.9 No 457 Red Multi Purpose Pillar D Concrete 1.2 No 458 Blue Multi Purpose Pipe D Metal 0.2 No 459 White Multi Purpose Pipe D Metal 0.1 No 460 Blue Multi Purpose Pillar B Concrete 0.5 No 461 Blue Multi Purpose Pillar B Concrete AP No 462 Blue Multi Purpose Pillar B Concrete AP No 463 Blue Multi Purpose Pillar B Concrete AP No 464 Blue Multi Purpose Pillar B Concrete AP No 465 Cream Multi Purpose Pillar C Concrete 0.0 No 466 Cream Multi Purpose Door Frame C Wood 1.9 No 467 Green Multi Purpose Door Stopper C Wood 0.0 No 468 Red Multi Purpose Trim C Wood 0.0 No 469 Cream Multi Purpose Door Frame C Wood AP No 470 Cream Multi Purpose Wall D Concrete 0.0 No 471 Green Multi Purpose Door Frame D Wood 0.0 No 472 Cream Multi Purpose Door Stopper D Wood 0.0 No 473 Cream Multi Purpose Wall D Drywall 0.0 No 474 Cream Multi Purpose Wall D Metal 0.0 No 475 Cream Multi Purpose Wall B Concrete 0.0 No 476 Black Multi Purpose Wall B Wood 0.0 No 477 Cream Multi Purpose Door Frame B Wood 1.3 No 478 Cream Multi Purpose Door Stopper B Metal 2.6 No 479 Cream Multi Purpose Wall B Particle Board 0.0 No 480 Cream Multi Purpose Door Frame B Wood 1.3 No 481 Cream Multi Purpose Door Frame B Wood 1.2 No 482 Cream Multi Purpose Door Frame B Wood AP No 483 Cream Multi Purpose Window Frame B Wood 0.6 No 484 Cream Multi Purpose Wall B Metal 1.2 No 485 Cream Stage Wall A Wood 1.1 No 486 Cream Stage Wall A Particle Board 1.4 No 487 Cream Stage Wall B Concrete 0.0 No 488 Cream Stage Wall B Metal 0.0 No 489 Cream Stage Baseboard B Wood 1.2 No 490 Cream Stage Wall A Concrete 0.0 No 491 Cream Stage Baseboard A Wood 1.1 No 492 Cream Stage Wall C Metal 0.1 No 493 Cream Stage Wall C Concrete 0.0 No 494 Cream Stage Pipe C Metal 0.0 No 495 Cream Stage Baseboard C Wood 1.1 No 496 Cream Stage Pillar C Concrete 0.0 No 497 Cream Stage Baseboard C Wood 1.2 No 498 Blue Stage Wall A Wood 1.6 No 499 Blue Stage Trim A Wood 1.3 No 500 Green Stage Trim A Wood 1.5 No 501 Green Stage Stairs Wood 2.7 No 502 Green Stage Stairs Wood 0.0 No 503 Green Stage Window Frame A Wood 0.7 No 504 Blue Stage Beam A Wood 1.3 No 505 Cream Stage Wall B Concrete 0.0 No 8 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 506 Cream Stage Door Frame B Wood 0.0 No 507 Cream Stage Door Stopper B Wood 0.0 No 508 Cream Stage Door B Wood 0.0 No 509 Cream Stage Wall C Concrete 0.0 No 510 Cream Stage Wall D Concrete 0.0 No 511 Cream Stage Window Frame D Wood 1.2 No 512 Cream Stage Wall A Concrete 0.0 No 513 Cream Pantry A Wall D Concrete 0.0 No 514 Cream Pantry A Wall A Concrete 0.0 No 515 Cream Pantry A Wall B Particle Board 0.0 No 516 Cream Pantry A Cabinets B Wood 0.4 No 517 Cream Pantry A Wall C Particle Board 0.0 No 518 Cream Pantry A Door Frame C Wood 0.0 No 519 Cream Pantry A Door Stopper C Wood 0.0 No 520 Cream Pantry A Ceiling Wood 0.0 No 521 Cream Pantry A Ceiling Beam Wood 0.0 No 522 Cream Pantry A Trim D Wood 2.6 No 523 Cream Pantry A Trim A Wood 2.4 No 524 Cream Bath Kitchen Wall B Concrete 1.4 No 525 Cream Bath Kitchen Trim B Wood 0.2 No 526 Cream Bath Kitchen Wall C Concrete 2.5 No 527 Cream Bath Kitchen Wall D Drywall 0.8 No 528 Cream Bath Kitchen Wall A Drywall 0.9 No 529 Cream Bath Kitchen Door Frame A Wood 1.1 No 530 Cream Bath Kitchen Door Stopper A Wood 1.6 No 531 Cream Bath Kitchen Ceiling Drywall 0.6 No 532 Cream Bath Kitchen Ceiling Trim Wood 0.8 No 533 Cream Pantry B Wall C Concrete 0.0 No 534 Cream Pantry B Cabinet C Wood 0.6 No 535 Cream Pantry B Ceiling Wood 0.0 No 536 Cream Pantry B Wall D Concrete 0.0 No 537 Cream Pantry B Wall A Drywall 0.8 No 538 Cream Pantry B Door Frame B Wood 0.9 No 539 Cream Pantry B Door Stopper B Wood 0.7 No 540 Cream Pantry B Wall B Drywall 1.0 No 541 Cream Kitchen Ceiling Wood 4.2 No 542 Cream Kitchen Ceiling Beam Wood 0.0 No 543 Cream Kitchen Ceiing Beam Wood 0.0 No 544 Cream Kitchen Ceiling Trim Wood 0.0 No 545 Cream Kitchen Ceiling Drywall 0.0 No 546 Cream Kitchen Ceiling Drywall 0.8 No 547 Red Kitchen Door Frame A Metal 0.0 No 548 Grey Kitchen Door A Metal 0.1 No 549 Cream Kitchen Wall A Concrete 0.0 No 550 Cream Kitchen Wall B Concrete 0.0 No 551 Cream Kitchen Wall B Metal 0.0 No 552 Cream Kitchen Wall C Concrete 0.0 No 553 Cream Kitchen Door Frame C Wood 0.0 No 554 Cream Kitchen Wall D Concrete 0.0 No 555 Cream Kitchen Wall C Drywall 1.0 No 556 Cream Kitchen Door Frame D Wood 0.5 No 9 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 557 Cream Kitchen Ceiling Trim Wood 0.7 No 558 Cream Kitchen Ceiling Trim Drywall 1.2 No 559 Cream Kitchen Wall C Metal 1.5 No 560 Cream Kitchen Ceiling Vent Metal 0.1 No 561 Cream Kitchen Wall D Concrete 1.4 No 562 Cream Kitchen Window Frame D Wood 0.5 No 563 Cream Kitchen Cabinets D Wood 0.4 No 564 Cream Kitchen Window Frame A Wood 0.0 No 565 Cream Kitchen Door Frame A Wood 0.0 No 566 Blue Room 15 Ceiling Beam Wood 0.0 No 567 Blue Room 15 Ceiling Trim Wood 0.0 No 568 Cream Room 15 Wall B Drywall 0.0 No 569 Cream Room 15 Trim B Wood 3.1 No 570 Cream Room 15 Wall B Particle Board 3.3 No 571 Cream Room 15 Wall C Drywall 0.0 No 572 Cream Room 15 Cabinets C Wood 0.0 No 573 Cream Room 15 Door Frame C Wood 1.6 No 574 Cream Room 15 Door Stopper C Wood 1.5 No 575 Cream Room 15 Wall D Drywall 0.0 No 576 Cream Room 15 Wall D Particle Board 3.3 No 577 Cream Room 15 Wall D Wood 0.0 No 578 Blue Room 15 Window Frame A Wood 1.7 No 579 Cream Room 15 Wall A Particle Board 0.0 No 580 Cream Room 14 Cabinets D Wood 0.0 No 581 Cream Room 14 Wall D Drywall 1.1 No 582 Cream Room 14 Wall D Particle Board 0.0 No 583 Cream Room 14 Window Frame A Wood 1.0 No 584 Cream Room 14 Window A Particle Board 0.0 No 585 Cream Room 14 Wall A Particle Board 0.6 No 586 Cream Room 14 Wall B Drywall 0.7 No 587 Blue Room 14 Wall B Particle Board 0.0 No 588 White Room 14 Wall B Particle Board 0.0 No 589 Cream Room 14 Wall C Drywall 0.1 No 590 Cream Room 14 Door Frame C Wood 0.0 No 591 Cream Room 14 Door Stopper C Wood 0.0 No 592 Cream Room 14 Ceiling Beam Wood 3.2 No 593 Cream Room 14 Trim B Wood 1.5 No 594 Cream Room 14 Trim B Wood AP No 595 Cream Room 14 Trim B Wood AP No 596 Cream Room 14 Trim B Wood AP No 597 Cream Room 14 Trim B Wood AP No 598 Cream Room 14 Window Frame Ceiling Wood 0.0 No 599 Cream Room 14 Window Ceiling Wood 0.0 No 600 Test 1.1 601 Test 1.2 602 Test 1.2 603 Test 1.1 604 Test 1.1 605 Test 1.1 606 Cream Room 13 Trim A Wood 1.1 No 607 Cream Room 13 Window Frame A Wood 1.7 No 10 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 608 Cream Room 13 Wall A Drywall 0.0 No 609 Cream Room 13 Window A Particle Board 0.0 No 610 Black Room 13 Wall A Particle Board 0.5 No 611 Cream Room 13 Wall B Drywall 0.7 No 612 Black Room 13 Wall B Particle Board 0.0 No 613 Cream Room 13 Cabinet B Wood 0.0 No 614 Cream Room 13 Wall C Drywall 0.3 No 615 Cream Room 13 Wall C Metal 1.0 No 616 Cream Room 13 Door Frame C Wood 1.0 No 617 Green Room 13 Door Stopper C Wood 0.9 No 618 Cream Room 13 Wall D Drywall 0.0 No 619 Blue Room 13 Wall D Particle Board 0.6 No 620 Black Room 13 Wall D Particle Board 0.0 No 621 Cream Room 13 Window Frame Ceiling Wood 0.0 No 622 Cream Room 13 Window Ceiling Wood 0.0 No 623 Cream Room 13 Ceiling Beam Wood 2.1 No 624 Cream Room 13 Ceiling Beam Wood AP No 625 Cream Room 13 Ceiling Beam Wood AP No 626 Cream Room 13 Ceiling Beam Wood AP No 627 Cream Room 13 Beam A Wood 2.0 No 628 Cream Room 12 Trim A Wood 2.5 No 629 Cream Room 12 Wall A Wood AP No 630 Cream Room 12 Window Frame A Wood 0.9 No 631 Cream Room 12 Wall A Particle Board 0.0 No 632 Cream Room 12 Beam A Wood 2.1 No 633 Cream Room 12 Wall B Drywall 0.9 No 634 Black Room 12 Wall B Particle Board 0.0 No 635 Cream Room 12 Wall C Drywall 0.0 No 636 Cream Room 12 Wall C Metal 0.0 No 637 Cream Room 12 Door Frame C Wood 0.1 No 638 Green Room 12 Door Stopper C Wood 0.1 No 639 Cream Room 12 Cabinets C Wood 0.0 No 640 Cream Room 12 Wall D Drywall 0.7 No 641 Cream Room 12 Window Frame Ceiling Wood 0.0 No 642 Cream Room 12 Window Ceiling Wood 0.0 No 643 Blue Room 12 Ceiling Beam Wood 1.6 No 644 Blue Room 12 Ceiling Beam Wood AP No 645 Blue Room 12 Ceiling Beam Wood AP No 646 Blue Room 12 Ceiling Beam Wood AP No 647 Cream Room 11 Trim A Wood 2.1 No 648 Cream Room 11 Trim A Wood AP No 649 Cream Room 11 Window Frame A Wood 0.6 No 650 Cream Room 11 Window A Particle Board 0.0 No 651 Cream Room 11 Beam A Wood 1.4 No 652 Cream Room 11 Wall B Drywall 0.8 No 653 Black Room 11 Wall B Particle Board 0.0 No 654 Cream Room 11 Cabinets B Wood 0.0 No 655 Cream Room 11 Wall C Drywall 0.1 No 656 Cream Room 11 Door Frame C Wood 0.4 No 657 Green Room 11 Door Stopper C Wood 0.3 No 658 Cream Room 11 Wall C Metal 0.1 No 11 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 659 Cream Room 11 Wall D Drywall 0.9 No 660 Cream Room 11 Ceiling Beam Wood 2.2 No 661 Cream Room 11 Ceiling Beam Wood AP No 662 Cream Room 11 Ceiling Beam Wood AP No 663 Cream Room 11 Ceiling Beam Wood AP No 664 Cream Room 11 Window Frame Ceilng Wood 0.1 No 665 Cream Room 11 Window Ceiling Wood 0.0 No 666 Blue Room 10 Trim A Wood 1.0 No 667 Blue Room 10 Trim A Wood AP No 668 Blue Room 10 Window Frame A Wood 2.5 No 669 Blue Room 10 Beam A Wood 2.3 No 670 Blue Room 10 Wall A Particle Board 0.0 No 671 Cream Room 10 Wall A Particle Board 0.0 No 672 Cream Room 10 Wall B Drywall 0.8 No 673 Cream Room 10 Window Frame Ceiling Wood 0.0 No 674 Cream Room 10 Window Ceiling Wood 0.0 No 675 Blue Room 10 Ceiling Beam Wood 2.2 No 676 Blue Room 10 Ceiling Beam Wood AP No 677 Blue Room 10 Ceiling Beam Wood AP No 678 Blue Room 10 Ceiling Beam Wood AP No 679 Blue Room 10 Wall C Drywall 0.6 No 680 Blue Room 10 Wall C Metal 0.2 No 681 Blue Room 10 Door Frame C Wood 0.1 No 682 Green Room 10 Door Stopper C Wood 0.0 No 683 Cream Room 10 Cabinets C Wood 0.0 No 684 Cream Room 10 Wall D Drywall 0.6 No 685 White Room 10 Wall D Particle Board 0.0 No 686 Yellow Room 8 Closet Wall B Drywall 0.4 No 687 Yellow Room 8 Closet Wall C Drywall 0.2 No 688 Yellow Room 8 Closet Wall A Drywall 0.3 No 689 Yellow Room 8 Closet Wall D Drywall 0.4 No 690 Cream Room 8 Closet Door Frame D Wood 0.4 No 691 Cream Room 8 Closet Door Stopper D Wood 0.0 No 692 Cream Room 9 Wall D Concrete 0.0 No 693 Cream Room 10 Wall A Drywall 0.0 No 694 Cream Room 11 Wall B Drywall 0.0 No 695 Cream Room 12 Wall C Drywall 0.0 No 696 Brown Room 13 Door Frame C Wood 0.0 No 697 Cream Room 14 Wall D Drywall 0.2 No 698 Cream Room 15 Wall D Particle Board 0.6 No 699 Cream Room 8A Wall A Drywall 0.0 No 700 Cream Room 8A Wall B Drywall 0.0 No 701 Cream Room 8A Wall C Drywall 0.0 No 702 Cream Room 8A Wall D Drywall 0.0 No 703 Cream Room 8A Ceiling Drywall 0.0 No 704 Cream Room 8B Wall A Drywall 0.0 No 705 Cream Room 8B Wall B Drywall 0.0 No 706 Cream Room 8B Wall C Drywall 0.0 No 707 Cream Room 8B Wall D Drywall 0.0 No 708 Cream Room 8B Ceiling Drywall 0.0 No 709 Cream Office B Wall A Drywall 0.0 No 12 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 710 Cream Office B Wall B Drywall 0.0 No 711 Cream Office B Wall C Drywall 0.0 No 712 Cream Office B Wall D Drywall 0.0 No 713 Cream Office B Wall A Drywall 0.0 No 714 Cream Office B Wall B Drywall 0.0 No 715 Cream Office B Wall C Drywall 0.0 No 716 Cream Office B Beam C Drywall 0.0 No 717 Cream Office B Wall C Metal 0.0 No 718 Cream Office B Wall D Drywall 0.0 No 719 Grey Padded Room B Wall A Particle Board 0.0 No 720 Grey Padded Room B Baseboard A Wood 0.0 No 721 Grey Padded Room B Wall B Drywall 0.0 No 722 Grey Padded Room B Baseboard B Wood 0.0 No 723 Grey Padded Room B Wall C Drywall 0.0 No 724 Grey Padded Room B Baseboard C Wood 0.0 No 725 Grey Padded Room B Door D Metal 0.0 No 726 Grey Padded Room B Ceiling Drywall 0.0 No 727 Grey Padded Room B Wall D Drywall 0.0 No 728 Grey Padded Room C Ceiling Drywall 0.0 No 729 Cream Room 19A Wall A Concrete 0.3 No 730 Cream Room 19A Wall B Drywall 0.0 No 731 Cream Room 19A Door B Metal 0.0 No 732 Cream Room 19A Door Frame B Metal 0.0 No 733 Cream Room 19A Wall C Drywall 0.0 No 734 White Room 19A Window Frame C Wood 0.0 No 735 Cream Room 19A Wall C Particle Board 0.9 No 736 Cream Room 19A Door Frame C Metal 0.0 No 737 Cream Room 19A Door C Metal 0.0 No 738 Cream Room 19A Door Frame D Metal 0.0 No 739 Cream Room 19A Door D Metal 0.0 No 740 Cream Room 19A Wall D Drywall 0.0 No 741 Cream Room 19A Door Stopper D Metal 0.0 No 742 White Room 19B Wall C Drywall 0.0 No 743 White Room 19B Wall D Drywall 0.0 No 744 White Room 19B Wall A Drywall 0.0 No 745 White Room 19B Wall B Drywall 0.0 No 746 Cream Room 19B Door Frame C Metal 0.0 No 747 Cream Room 19B Door C Metal 0.0 No 748 Cream Room 18.5 Door Frame B Wood 0.0 No 749 Cream Room 18.5 Wall D Wood 0.0 No 750 Cream Room 18 Door Frame C Metal 0.0 No 751 Cream Room 18 Door C Metal 0.0 No 752 White Room 18 Window Frame C Wood 0.0 No 753 Cream Room 18 Wall D Drywall 0.0 No 754 Cream Room 18 Wall A Concrete 0.0 No 755 Cream Room 18 Wall B Drywall 0.1 No 756 Cream Room 18 Wall B Metal 0.0 No 757 Cream Room 18 Door B Metal 0.0 No 758 Cream Room 18B Wall A Drywall 0.0 No 759 Cream Room 18B Wall B Drywall 0.0 No 760 Cream Room 18B Wall C Drywall 0.0 No 13 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 761 Cream Room 18B Wall D Drywall 0.0 No 762 Cream Room 18B Door Frame C Metal 0.0 No 763 Cream Room 18B Door C Metal 0.0 No 764 Grey Room 17B Wall A Drywall 0.0 No 765 Grey Room 17B Wall B Drywall 0.0 No 766 Grey Room 17B Wall C Drywall 0.0 No 767 Grey Room 17B Wall D Drywall 0.0 No 768 Grey Room 17B Ceiling Drywall 0.0 No 769 Cream Room 17 Wall B Drywall 0.0 No 770 Cream Room 17 Wall C Drywall 0.0 No 771 Cream Room 17 Ceiling Drywall 0.0 No 772 Cream Room 17 Wall A Concrete 0.0 No 773 Cream Room 17 Window Frame C Wood 0.0 No 774 Cream Room 17 Wall D Drywall 0.0 No 775 Cream Room 16 Wall B Drywall 0.0 No 776 Cream Room 16 Wall C Drywall 0.0 No 777 Brown Room 16 Window Frame C Wood 0.0 No 778 Cream Room 16 Wall D Drywall 0.0 No 779 Cream Room 16 Ceiling Drywall 0.0 No 780 Cream Room 16 Wall A Concrete 0.0 No 781 White H2 Trim D Wood 0.0 No 782 White H2 Wall D Drywall 0.0 No 783 White H2 Door Frame D Metal 0.0 No 784 White H2 Door D Metal 0.0 No 785 White H2 Wall C Concrete 0.0 No 786 White H2 Ceiling Drywall 0.0 No 787 White H2 Ceiling Trim Wood 0.0 No 788 Green H2 Door Frame C Wood 0.0 No 789 Green H2 Door Frame A Wood 1.7 No 790 Green H2 Door Frame A Wood AP No 791 Green H2 Door Frame A Wood AP No 792 Green H2 Door Frame A Wood AP No 793 Green H2 Door Frame A Wood AP No 794 Green H2 Door Frame A Wood AP No 795 Green H2 Door Stopper A Wood 1.2 No 796 Green H2 Door Stopper A Wood AP No 797 Green H2 Door Stopper A Wood AP No 798 Green H2 Door Stopper A Wood AP No 799 Green H2 Door Stopper A Wood AP No 800 Green H2 Door Stopper A Wood AP No 801 White H2 Wall A Drywall 0.0 No 802 Black H2 Wall C Particle Board 0.0 No 803 Cream H3 Wall A Concrete 0.0 No 804 Green H3 Door Frame A Wood 1.5 No 805 Green H3 Door Frame A Wood AP No 806 Green H3 Door Stopper A Wood 2.1 No 807 Green H3 Door Stopper A Wood AP No 808 Cream H3 Ceiling Trim Wood 0.0 No 809 Green H3 Wall B Drywall 0.0 No 810 Green H3 Door Frame B Wood 0.0 No 811 Green H3 Wall C Wood 2.5 No 14 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 812 Green H3 Door Frame C Wood AP No 813 Green H3 Door Frame C Wood AP No 814 Green H3 Door Frame C Wood AP No 815 Green H3 Door stopper C Wood 0.7 No 816 White H1 Ceiling Drywall 0.0 No 817 White H1 Ceiling Beam Wood 0.0 No 818 White H1 Trim B Wood 0.0 No 819 White H1 Wall B Concrete 0.0 No 820 White H1 Wall A Drywall 0.0 No 821 White H1 Wall D Drywall 0.0 No 822 White H1 Wall B Metal 0.0 No 823 Green H1 Door Frame B Wood 0.0 No 824 White H1 Wall B Particle Board 0.0 No 825 White H1 Door Stopper B Wood 0.0 No 826 White H1 Wall D Concrete 0.0 No 827 White H1 Wall D Metal 0.0 No 828 Black H1 Wall D Particle Board 0.7 No 829 Cream H1 Wall C Drywall 0.0 No 830 Cream H1 Ceiling Frame Wood 0.0 No 831 Cream H1 Window Ceiling Plywood 0.0 No 832 Cream H1 Door Frame C Metal 0.0 No 833 Cream H1 Door C Metal 0.0 No 834 Cream H1 Trim D Wood 2.5 No 835 Red Exterior Wall C Wood 0.0 No 836 Cream Exterior Wall C Wood 0.0 No 837 Grey Exterior Window Frame C Wood 2.8 No 838 Grey Exterior Wall C Concrete 0.0 No 839 Grey Exterior Window Frame C Wood AP No 840 Grey Exterior Window Frame C Wood AP No 841 Grey Exterior Window Frame C Wood AP No 842 Grey Exterior Window Frame C Wood AP No 843 Grey Exterior Window Frame C Wood AP No 844 Grey Exterior Window Frame C Wood AP No 845 Cream Exterior Wall B Concrete 0.0 No 846 Cream Exterior Wall B Particle Board 0.0 No 847 Grey Exterior Door Frame B Metal 0.0 No 848 Grey Exterior Door B Metal 0.0 No 849 Cream Exterior Ceiling Beam Wood 2.4 No 850 Cream Exterior Ceiling Beam Wood 3.2 No 851 Grey Exterior Ceiling Beam Wood AP No 852 Grey Exterior Ceiling Beam Wood AP No 853 Grey Exterior Ceiling Beam Wood AP No 854 Grey Exterior Ceiling Beam Wood AP No 855 Cream Exterior Wall A Particle Board 0.0 No 856 Blue Exterior Window Frame A Wood 0.0 No 857 Blue Exterior Door Frame A Wood 0.0 No 858 Cream Exterior Door A Metal 0.0 No 859 Cream Exterior Wall B Concrete 0.0 No 860 Grey Exterior Wall B Concrete 0.0 No 861 Blue Exterior Door Frame B Metal 0.0 No 862 Blue Exterior Door B Metal 0.0 No 15 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 863 Cream Exterior Window Frame B Metal 0.0 No 864 Cream Exterior Wall A Concrete 0.0 No 865 Green Exterior Wall A Metal 0.0 No 866 Cream Exterior Wall A Plywood 0.0 No 867 Green Exterior Door A Metal 0.0 No 868 Cream Exterior Door Frame A Metal 0.0 No 869 Cream Exterior Window Frame D Wood 0.2 No 870 Grey Exterior Window Frame D Wood 4.1 No 871 Grey Exterior Window Frame D Wood AP No 872 Grey Exterior Window Frame D Wood AP No 873 Grey Exterior Window Frame D Wood AP No 874 Grey Exterior Window Frame D Wood AP No 875 Grey Exterior Window Frame D Wood AP No 876 Grey Exterior Door Frame D Wood 2.6 No 877 Grey Exterior Door Frame D Wood AP No 878 Grey Exterior Door Frame D Wood AP No 879 Grey Exterior Door Frame D Wood AP No 880 Grey Exterior Door Frame D Wood AP No 881 Grey Exterior Door Frame D Wood AP No 882 Grey Exterior Door D Metal 5.3 No 883 Grey Exterior Door D Metal AP No 884 Grey Exterior Door D Metal AP No 885 Grey Exterior Door D Metal AP No 886 Grey Exterior Door D Metal AP No 887 Grey Exterior Wall D Concrete 0.0 No 888 Cream Exterior Door Frame C Metal 0.0 No 889 Cream Exterior Door C Metal 0.0 No 890 Cream Exterior Door Frame D Wood 0.3 No 891 Cream Exterior Door D Metal 0.0 No 892 Cream Exterior Ceiling Beam Wood 2.7 No 893 Cream Exterior Ceiling Beam Wood AP No 894 Cream Exterior Ceiling Beam Wood AP No 895 Cream Exterior Ceiling Beam Wood AP No 896 Cream Exterior Ceiling Wood 0.0 No 897 Green Exterior Ceiling Metal 0.1 No Notes: Bolded results indicate that lead was detected above 1.0 mg/cm². EPA and HUD define LBP as any surface coating that contains at least 1.0 mg/cm² or 0.5 percent lead by weight. Letter modifiers A through D in the "Component" column denote which wall is being referred to in a room and corresponds to the appropriate cardinal direction. A refers to the western wall, B refers to the northern wall, C refers to the eastern wall, and D refers to the southern wall. When a component is given a letter modifier it is describing the wall on which the component is located (e.g. Door frame D is the door frame located on wall D, the southern wall of the room). AP Assumed positive mg/cm² milligrams per square centimeter No. Number XRF X-Ray Flourescence Not applicable 16 of 16 TABLE 2A: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – FORMER HECK ELEMENTARY SCHOOL BUILDING (CONT.) ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT Table 2B: Summary of Lead-Based Paint Screening Results – IT Building ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 1 Test 1.2 2 Test 1.1 3 Test 1.1 4 Cream IT1 Wall A Particle Board 0.0 No 5 White IT1 Window Frame A Wood 0.0 No 6 Cream IT1 Ceiling Particle Board 0.0 No 7 White IT1 Door Frame A Wood 0.0 No 8 White IT1 Door Stopper A Wood 0.0 No 9 Cream IT1 Wall B Particle Board 0.0 No 10 Cream IT1 Window Frame B Wood 0.0 No 11 White IT1 Door Frame C Wood 0.0 No 12 Cream IT1 Wall C Particle Board 0.0 No 13 Cream IT1 Wall D Particle Board 0.0 No 14 White IT1 Window Frame D Wood 0.0 No 15 Cream Kitchen Wall A Particle Board 0.0 No 16 White Kitchen Door Frame A Wood 0.0 No 17 Cream Kitchen Wall B Particle Board 0.0 No 18 White Kitchen Door Frame C Wood 0.0 No 19 Cream Kitchen Wall C Particle Board 0.0 No 20 White Kitchen Door Frame D Wood 0.0 No 21 Cream Kitchen Wall D Particle Board 0.0 No 22 Cream Kitchen Ceiling Particle Board 0.0 No 23 Cream Bathroom Wall D Particle Board 0.0 No 24 Cream Bathroom Wall A Particle Board 0.0 No 25 Cream Bathroom Wall B Particle Board 0.0 No 26 Cream Bathroom Wall A Plastic 0.0 No 27 Cream Bathroom Wall C Particle Board 0.0 No 28 White Bathroom Door Frame B Wood 0.0 No 29 White Bathroom Door Stopper B Wood 0.0 No 30 Cream Hallway Wall D Particle Board 0.0 No 31 White Hallway Window Frame D Wood 0.0 No 32 Cream Hallway Wall A Particle Board 0.0 No 33 White Hallway Door Frame A Wood 0.0 No 34 White Hallway Door Stopper A Wood 0.0 No 35 White Hallway Door Frame B Wood 0.0 No 36 White Hallway Door Stopper B Wood 0.0 No 37 Cream Hallway Wall B Particle Board 0.0 No 38 White Hallway Window Frame B Wood 0.0 No 39 Cream Hallway Wall C Particle Board 0.0 No 40 White Hallway Door Frame C Wood 0.0 No 41 White Hallway Door Stopper C Wood 0.0 No 42 White Hallway Door Frame D Wood 0.0 No 43 White Hallway Door Stopper D Wood 0.0 No 44 Cream Ceiling Ceiling Particle Board 0.0 No 45 Cream IT2 Wall B Particle Board 0.0 No 46 White IT2 Window Frame B Wood 0.0 No 47 Cream IT2 Wall C Particle Board 0.0 No 48 Cream IT2 Wall D Particle Board 0.0 No 49 White IT2 Door Frame A Wood 0.0 No 50 White IT2 Door Stopper A Wood 0.0 No 1 of 3 TABLE 2B: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – IT BUILDING ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 51 Cream IT2 Wall A Particle Board 0.0 No 52 Cream IT2 Ceiling Particle Board 0.0 No 53 Cream IT3 Wall B Particle Board 0.0 No 54 Cream IT3 Wall C Particle Board 0.0 No 55 White IT3 Door Frame C Wood 0.0 No 56 Cream IT3 Wall D Particle Board 0.0 No 57 Cream IT3 Wall A Particle Board 0.0 No 58 White IT3 Door Frame A Wood 0.0 No 59 White IT3 Door Stopper A Wood 0.0 No 60 Cream IT3 Ceiling Particle Board 0.0 No 61 Cream IT4 Wall C Particle Board 0.0 No 62 Cream IT4 Wall D Particle Board 0.0 No 63 Cream IT4 Wall A Particle Board 0.0 No 64 Cream IT4 Wall B Particle Board 0.0 No 65 White IT4 Door Frame B Wood 0.0 No 66 White IT4 Door Stopper B Wood 0.0 No 67 White IT4 Window Frame B Wood 0.0 No 68 Cream IT5 Wall C Particle Board 0.0 No 69 Cream IT5 Wall D Particle Board 0.0 No 70 Cream IT5 Wall A Particle Board 0.0 No 71 Cream IT5 Wall B Particle Board 0.0 No 72 White IT5 Window Frame B Wood 0.0 No 73 White IT5 Door Frame C Wood 0.0 No 74 White IT5 Door Stoper C Wood 0.0 No 75 Cream IT5 Ceiling Particle Board 0.0 No 76 Cream IT6 Wall C Particle Board 0.0 No 77 Cream IT6 Door Frame C Wood 0.0 No 78 Cream IT6 Door C Wood 0.0 No 79 Cream IT6 Baseboard C Wood 0.0 No 80 Cream IT6 Wall C Metal 0.0 No 81 Cream IT6 Ceiling Particle Board 0.0 No 82 Cream IT6 Wall D Particle Board 0.0 No 83 Cream IT6 Baseboard D Wood 0.0 No 84 Cream IT6 Wall A Wood 0.0 No 85 Cream IT6 Wall A Particle Board 0.0 No 86 White IT6 Window Frame A Wood 0.0 No 87 Cream IT6 Wall C Particle Board 0.0 No 88 Cream IT6 Window Frame C Wood 0.0 No 89 Cream IT6 Baseboard C Wood 0.0 No 90 Cream IT6 Railing C Wood 0.0 No 91 Cream Server Wall A Particle Board 0.0 No 92 White Server Door Frame A Wood 0.0 No 93 White Server Door Stopper A Wood 0.0 No 94 Cream Server Wall B Particle Board 0.0 No 95 Cream Server Wall C Particle Board 0.0 No 96 Cream Server Wall D Particle Board 0.0 No 97 Cream Server Window Frame D Wood 0.0 No 98 Cream Server Ceiling Particle Board 0.0 No 898 Green IT Exterior Wall B Concrete 0.0 No 899 White IT Exterior Wall B Siding 0.0 No 900 White IT Exterior Trim B Siding 3.3 Yes 2 of 3 TABLE 2B: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – IT BUILDING - CONT. ---PAGE BREAK--- XRF Screening No. Paint Color Location Component Substrate XRF Reading (mg/cm²) Damaged (Yes/No) 901 White IT Exterior Window Frame B Siding 0.2 No 902 White IT Exterior Trim B Concrete 0.0 No 903 White IT Exterior Wall A Concrete 0.0 No 904 White IT Exterior Wall D Siding 0.0 No 905 White IT Exterior Window Frame D Siding 0.0 No 906 Grey IT Exterior Wall D Particle Board 0.0 No 907 White IT Exterior Door Frame D Wood 0.0 No 908 White IT Exterior Railng Metal 0.0 No 909 White IT Exterior Trim D Wood 5.2 No 910 Grey IT Exterior Wall D Concrete 0.0 No 911 Grey IT Exterior Wall D Wood 0.1 No 912 Grey IT Exterior Wall C Concrete 0.0 No 913 White IT Exterior Door Frame C Wood 0.0 No 914 White IT Exterior Wall C Siding 0.0 No 915 White IT Exterior Ceiling Particle Board 3.6 No 916 White IT Exterior Window Frame C Wood 0.0 No 917 White IT Exterior Beam C Wood 4.2 No 918 Green IT Exterior Porch Floor Wood 0.0 No 919 White IT Exterior Railing Wood 0.0 No 920 White IT Exterior Pillar Wood 0.0 No 921 White IT Exterior Terrace Wood 0.0 No 922 Test 1.1 923 Test 1.2 924 Test 1.2 3 of 3 Notes: Bolded results indicate that lead was detected above 1.0 mg/cm². EPA and HUD define LBP as any surface coating that contains at least 1.0 mg/cm² or 0.5 percent lead by weight. Letter modifiers A through D in the "Component" column denote which wall is being referred to in a room and corresponds to the appropriate cardinal direction. A refers to the western wall, B refers to the northern wall, C refers to the eastern wall, and D refers to the southern wall. When a component is given a letter modifier it is describing the wall on which the component is located (e.g. Door frame D is the door frame located on wall D, the southern wall of the room). mg/cm² milligrams per square centimeter No. Number XRF X-Ray Flourescence TABLE 2B: SUMMARY OF LEAD-BASED PAINT SCREENING RESULTS – IT BUILDING - CONT. ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT Table 3A: Summary of Soil Analytical Results ---PAGE BREAK--- Sample ID EPA Residential RSL (mg/kg) DEQ Leaching Screening Level (mg/kg) DEQ Numeric Water Quality Standard - Lead (µg/L) Total Lead (mg/kg) Lead Leachate (µg/L) Total Lead, SPLP (mg/L) HE-02-SO-0-0.5-20250411 22.2 NA NA HE-03-SO-0-0.5-20250411 25.7 NA NA HE-03-SO-0-0.5-20250411-DUP 22.4 NA NA HE-04-SO-0-0.5-20250411 30.6 NA NA HE-05-SO-0-0.5-20250411 50.4 NA NA HE-06-SO-0-0.5-20250411 27.4 NA NA IT-01-SO-0-0.5-20250411 123 52 0.052 IT-03-SO-0-0.5-20250411 204 49 0.049 IT-04-SO-0-0.5-20250411 307 146 0.146 200 90 Heck Elementary School Soil Samples, 0 to 6 inches bgs 10 Notes: Bolded results indicate total lead concentrations exceeded the DEQ Leaching Screening Level of 90 mg/kg. These samples were subjected to further analysis for precipitation leaching procedure (SPLP) in order to calculate vadose zone travel times (detailed in Table 3b) Bolded and italicized results indicate lead leachate concentration exceeded the DEQ numeric water quality standard of 10 µg/L bgs Below ground surface DEQ Montana Department of Environmental Quality EPA U.S. Environmental Protection Agency ID Identification µg/L Microgram per liter mg/kg Milligram per kilogram mg/L Milligram per liter NA Not assessed RSL Regional screening level SPLP precipitation leaching procedure TABLE 3A: SUMMARY OF SOIL ANALYTICAL RESULTS ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT Table 3B: Lead in Soil Vadose Zone Travel Times ---PAGE BREAK--- Analyte Lead Lead Lead Location IT-01-SO-0-0.5-20250411 IT-03-SO-0-0.5-20250411 IT-04-SO-0-0.5-20250411 Dry Bulk Density (Dd) 1.5 1.5 1.5 kg/L Particle Density (Dp) 2.65 2.65 2.65 pcf Calculated Porosity 0.433962264 0.433962264 0.433962264 1-(Dp - Dd) H2O Content 0.1 0.1 0.1 Lwater/Lsoil Kd 2362.885 4160.765 2100.24 L/Kg Rt 20063.23113 35328.25 17833.22642 RF Infiltration Rate 0.0032 0.0032 0.0032 ft/day Vertical Pore Velocity 0.032 0.032 0.032 ft/day Chemical Velocity 1.59496E-06 9.05791E-07 1.7944E-06 ft/day Chemical Velocity 0.000582159 0.000330614 0.000654957 ft/year Feet between GW 12.5 12.5 12.5 Feet Feet between GW 5 5 5 Feet Travel time to GW(12.5 ft) 21472 37808 19085 Years Travel time to GW(5 ft) 8589 15123 7634 Years Heck Elementary IT Building Vadose Zone Travel Times Units Notes: Dd Dry bulk density Dp Particle density ft ft/day ft/year GW H2O Feet Feet per day Feet per year Groundwater Hydrogen Dioxide (water) Kd Soil-water partition coefficient (L/kg) kg/L Kilograms per liter L/kg Liters per kilogram pcf Pounds per cubic foot RF Rt Retardation factor Retardation TABLE 3B: LEAD IN SOIL VADOSE ZONE TRAVEL TIMES ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT Table 4A: Summary of Radiological Survey Results – Boiler Room ---PAGE BREAK--- Location 1 2 3 4 5 6 7 8 9 10 11 12 Exposure Standard (Rems/Calendar Quarter) General Background (Rems/Calendar Quarter) Reading 1 40 56 57 53 61 67 54 58 83 109 84 74 Reading 2 52 46 51 48 62 75 58 65 74 105 89 82 Reading 3 43 53 60 45 64 71 52 53 93 100 83 91 Reading 4 40 65 49 41 54 81 67 63 97 112 74 84 Reading 5 50 66 43 38 62 75 50 60 97 108 70 84 Result Average (CPM) 45 57.2 52 45 60.6 73.8 56.2 59.8 88.8 106.8 80 83 Rems/Calendar Quarter Conversion 0.0819 0.1041 0.0946 0.0819 0.1103 0.1343 0.1023 0.1088 0.1616 0.1944 0.1456 0.1511 Heck Elementary Geiger Counter Results CPM converted to Rems/Calendar Quarter) Furnace Room 1.25 0.02 - 0.04 Notes: Bolded results indicate radiation emissions that exceeded the general background emissions of 0.02-0.04 rems per calendar quarter CPM Counts per minute Rem Roentgen equivalent in man TABLE 4A: SUMMARY OF RADIOLOGICAL SURVEY RESULTS – BOILER ROOM ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT Table 4B: Summary of Radiological Survey Results – Coal Storage Room ---PAGE BREAK--- Location 1 2 3 4 5 Exposure Standard (Rems/Calendar Quarter) General Background (Rems/Calendar Quarter) Reading 1 83 77 57 82 78 Reading 2 85 83 74 89 74 Reading 3 82 70 68 73 65 Reading 4 85 64 80 74 81 Reading 5 77 68 76 73 78 Result Average (CPM) 82.4 72.4 71 78.2 75.2 Rem/Calendar Quarter Conversion 0.1500 0.1318 0.1292 0.1423 0.1369 1.25 0.02 - 0.04 Heck Elementary Geiger Counter Results CPM converted to Rems/Calendar Quarter) Coal Storage Room Notes: Bolded results indicate radiation emissions that exceeded the general background emissions of 0.02-0.04 rems per calendar quarter CPM Counts per minute Rem Roentgen equivalent in man TABLE 4B: SUMMARY OF RADIOLOGICAL SURVEY RESULTS – COAL STORAGE ROOM ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT FIGURES ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT Figure 1: Site Vicinity ---PAGE BREAK--- Service Layer Credits: Tiled service !ayer: ©OpenStreetMap (and) contributors, CC-BY-SA World Topographic Map: Montana State University, Esri, TomTom, Garm in, FAO, NOA , USGS, Bureau of Land Management, EPA, NPS, USFWS World lmagery: Maxar Hybrid Reference Layer: Montana State University, Montana State Ubrary, Esri, TomTom, Garmin, SafeGraph, GeoTechnologies, lnc, METI/NASA, USGS, Bureau of Land Management, EPA, NPS, US Census Bureau, USDA, USFWS World Hillshade: Esri, CGIAR. USGS P.a.1h:C:\U 44 Location: HQ-Heck_IT-CT01-A, White 2X4' cut unidirectional squiggle drop ceiling tiles Lab ID-Version‡: 20286767-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CT01-B, White 2X4' cut unidirectional squiggle drop ceiling tiles Lab ID-Version‡: 20286768-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CT01-C, White 2X4' cut unidirectional squiggle drop ceiling tiles Lab ID-Version‡: 20286769-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 2 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CT02-A, White 2X4' various depth cut multidirectional squiggle drop ceiling tiles Lab ID-Version‡: 20286770-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 3 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CT02-B, White 2X4' various depth cut multidirectional squiggle drop ceiling tiles Lab ID-Version‡: 20286771-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CT02-C, White 2X4' various depth cut multidirectional squiggle drop ceiling tiles Lab ID-Version‡: 20286772-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CT03-A, White 2X4' multidirectional squiggle drop ceiling Lab ID-Version‡: 20286773-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CT03-B, White 2X4' multidirectional squiggle drop ceiling Lab ID-Version‡: 20286774-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 4 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CT03-C, White 2X4' multidirectional squiggle drop ceiling Lab ID-Version‡: 20286775-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-DW01-A, Peach small grain drywall with white paper Lab ID-Version‡: 20286776-1 Sample Layers Asbestos Content White Joint Compound with Paint ND Peach Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-DW01-B, Peach small grain drywall with white paper Lab ID-Version‡: 20286777-1 Sample Layers Asbestos Content White Joint Compound with Paint ND Peach Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-DW01-C, Peach small grain drywall with white paper Lab ID-Version‡: 20286778-1 Sample Layers Asbestos Content White Joint Compound with Paint ND Peach Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 5 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CPM01-A, Brown, tan , and green cross stich with brown mastic Lab ID-Version‡: 20286779-1 Sample Layers Asbestos Content Multicolored Carpet ND White Fibrous Material (Mesh) ND White Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM01-B, Brown, tan , and green cross stich with brown mastic Lab ID-Version‡: 20286780-1 Sample Layers Asbestos Content Multicolored Carpet ND White Fibrous Material (Mesh) ND White Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM01-C, Brown, tan , and green cross stich with brown mastic Lab ID-Version‡: 20286781-1 Sample Layers Asbestos Content Multicolored Carpet ND White Fibrous Material (Mesh) ND White Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 6 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CBM01-A, Brown 4" cove base with beige mastic Lab ID-Version‡: 20286782-1 Sample Layers Asbestos Content Dark Brown Baseboard ND Beige Mastic ND White Compound ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 7 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CBM01-B, Brown 4" cove base with beige mastic Lab ID-Version‡: 20286783-1 Sample Layers Asbestos Content Dark Brown Baseboard ND Beige Mastic ND White Compound ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CBM01-C, Brown 4" cove base with beige mastic Lab ID-Version‡: 20286784-1 Sample Layers Asbestos Content Dark Brown Baseboard ND Beige Mastic ND White Compound ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CT04-A, White 12x12" ceiling tiles Lab ID-Version‡: 20286785-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CT04-B, White 12x12" ceiling tiles Lab ID-Version‡: 20286786-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 8 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CT04-C, White 12x12" ceiling tiles Lab ID-Version‡: 20286787-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WB01-A, Brown wooden wall board painted white Lab ID-Version‡: 20286788-1 Sample Layers Asbestos Content Beige Wood Wall Board with Paint ND Composite Non-Asbestos Content: 95% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WB01-B, Brown wooden wall board painted white Lab ID-Version‡: 20286789-1 Sample Layers Asbestos Content Beige Wood Wall Board with Paint ND Composite Non-Asbestos Content: 95% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WB01-C, Brown wooden wall board painted white Lab ID-Version‡: 20286790-1 Sample Layers Asbestos Content Beige Wood Wall Board with Paint ND Composite Non-Asbestos Content: 95% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 9 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-INS01-A, White insulation brown paper Lab ID-Version‡: 20286791-1 Sample Layers Asbestos Content White Insulation ND Brown/Black Paper ND Composite Non-Asbestos Content: 80% Glass Fibers 15% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-INS01-B, White insulation brown paper Lab ID-Version‡: 20286792-1 Sample Layers Asbestos Content White Insulation ND Brown/Black Paper ND Composite Non-Asbestos Content: 80% Glass Fibers 15% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-INS01-C, White insulation brown paper Lab ID-Version‡: 20286793-1 Sample Layers Asbestos Content White Insulation ND Brown/Black Paper ND Composite Non-Asbestos Content: 80% Glass Fibers 15% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-PS01-A, Orange brown penetrating sealant Lab ID-Version‡: 20286794-1 Sample Layers Asbestos Content White Sealant ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 10 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-PS01-B, Orange brown penetrating sealant Lab ID-Version‡: 20286795-1 Sample Layers Asbestos Content White Sealant ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-PS01-C, Orange brown penetrating sealant Lab ID-Version‡: 20286796-1 Sample Layers Asbestos Content White Sealant ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WB02-A, Beige and tan 2x2" square tile pattern Lab ID-Version‡: 20286797-1 Sample Layers Asbestos Content Brown/White Fibrous Material Wall Board ND Composite Non-Asbestos Content: 85% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WB02-B, Beige and tan 2x2" square tile pattern Lab ID-Version‡: 20286798-1 Sample Layers Asbestos Content Brown/White Fibrous Material Wall Board ND Composite Non-Asbestos Content: 85% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 11 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-WB02-C, Beige and tan 2x2" square tile pattern Lab ID-Version‡: 20286799-1 Sample Layers Asbestos Content Brown/White Fibrous Material Wall Board ND Composite Non-Asbestos Content: 85% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CON01-A, Grey smooth concrete blocks Lab ID-Version‡: 20286800-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CON01-B, Grey smooth concrete blocks Lab ID-Version‡: 20286801-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CON01-C, Grey smooth concrete blocks Lab ID-Version‡: 20286802-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 12 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-WM01-A, Brown cementous wall mastic on CON01 Lab ID-Version‡: 20286803-1 Sample Layers Asbestos Content Brown/Gray Mastic ND Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WM01-B, Brown cementous wall mastic on CON01 Lab ID-Version‡: 20286804-1 Sample Layers Asbestos Content Brown/Gray Mastic ND Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WM01-C, Brown cementous wall mastic on CON01 Lab ID-Version‡: 20286805-1 Sample Layers Asbestos Content Brown/Gray Mastic ND Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM02-A, Green shag carpet w/o mastic Lab ID-Version‡: 20286806-1 Sample Layers Asbestos Content Green Carpet ND Yellow Non-Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 13 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CPM02-B, Green shag carpet w/o mastic Lab ID-Version‡: 20286807-1 Sample Layers Asbestos Content Green Carpet ND Yellow Non-Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM02-C, Green shag carpet w/o mastic Lab ID-Version‡: 20286808-1 Sample Layers Asbestos Content Green Carpet ND Yellow Non-Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM03-A, Light green multicolor w/o mastic Lab ID-Version‡: 20286809-1 Sample Layers Asbestos Content Green Carpet ND Gray Foam Backing ND White Non-Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM03-B, Light green multicolor w/o mastic Lab ID-Version‡: 20286810-1 Sample Layers Asbestos Content Green Carpet ND Gray Foam Backing ND White Non-Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 14 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CPM03-C, Light green multicolor w/o mastic Lab ID-Version‡: 20286811-1 Sample Layers Asbestos Content Green Carpet ND Gray Foam Backing ND White Non-Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VCM01-A, Marble pattern countertop with beige mastic Lab ID-Version‡: 20286812-1 Sample Layers Asbestos Content Gray Countertop ND Yellow Mastic ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VCM01-B, Marble pattern countertop with beige mastic Lab ID-Version‡: 20286813-1 Sample Layers Asbestos Content Gray Countertop ND Yellow Mastic ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VCM01-C, Marble pattern countertop with beige mastic Lab ID-Version‡: 20286814-1 Sample Layers Asbestos Content Gray Countertop ND Yellow Mastic ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 15 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-VFP01-A, Brown grain vinyl floor panel, brown mastic Lab ID-Version‡: 20286815-1 Sample Layers Asbestos Content Brown Flooring ND Yellow Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VFP01-B, Brown grain vinyl floor panel, brown mastic Lab ID-Version‡: 20286816-1 Sample Layers Asbestos Content Brown Flooring ND Yellow Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VFP01-C, Brown grain vinyl floor panel, brown mastic Lab ID-Version‡: 20286817-1 Sample Layers Asbestos Content Brown Flooring ND Yellow Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VSF01-A, Brown marble swirl pattern vinyl sheet flooring with tan mastic Lab ID-Version‡: 20286818-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Cream Mastic ND Gray Leveling Compound ND Brown Wood ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 16 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-VSF01-B, Brown marble swirl pattern vinyl sheet flooring with tan mastic Lab ID-Version‡: 20286819-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Cream Mastic ND Gray Leveling Compound ND Brown Wood ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VSF01-C, Brown marble swirl pattern vinyl sheet flooring with tan mastic Lab ID-Version‡: 20286820-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Cream Mastic ND Gray Leveling Compound ND Brown Wood ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM04-A, Blue carpet brown mastic Lab ID-Version‡: 20286821-1 Sample Layers Asbestos Content Gray Carpet ND White Fibrous Material (Mesh) ND Yellow Mastic ND Composite Non-Asbestos Content: 80% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 17 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CPM04-B, Blue carpet brown mastic Lab ID-Version‡: 20286822-1 Sample Layers Asbestos Content Gray Carpet ND White Fibrous Material (Mesh) ND Yellow Mastic ND Composite Non-Asbestos Content: 80% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 18 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CPM04-C, Blue carpet brown mastic Lab ID-Version‡: 20286823-1 Sample Layers Asbestos Content Gray Carpet ND White Fibrous Material (Mesh) ND Yellow Mastic ND Composite Non-Asbestos Content: 80% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-INS02-A, Yellow block insulation no paper Lab ID-Version‡: 20286824-1 Sample Layers Asbestos Content Yellow Insulation ND Composite Non-Asbestos Content: 95% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-INS02-B, Yellow block insulation no paper Lab ID-Version‡: 20286825-1 Sample Layers Asbestos Content Yellow Insulation ND Composite Non-Asbestos Content: 95% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-INS02-C, Yellow block insulation no paper Lab ID-Version‡: 20286826-1 Sample Layers Asbestos Content Yellow Insulation ND Composite Non-Asbestos Content: 95% Glass Fibers Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 19 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-INS03-A, Pink fiberglass insulation with silver paper Lab ID-Version‡: 20286827-1 Sample Layers Asbestos Content Silver Tape ND Brown/Black Paper ND Pink Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 10% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck_IT-INS03-B, Pink fiberglass insulation with silver paper Lab ID-Version‡: 20286828-1 Sample Layers Asbestos Content Silver Tape ND Brown/Black Paper ND Pink Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 10% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck_IT-INS03-C, Pink fiberglass insulation with silver paper Lab ID-Version‡: 20286829-1 Sample Layers Asbestos Content Silver Tape ND Brown/Black Paper ND Pink Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 10% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck_IT-BIN01-A, Brown blown-in insulation Lab ID-Version‡: 20286830-1 Sample Layers Asbestos Content Brown/White Insulation ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 20 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-BIN01-B, Brown blown-in insulation Lab ID-Version‡: 20286831-1 Sample Layers Asbestos Content Brown/White Insulation ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-BIN01-C, Brown blown-in insulation Lab ID-Version‡: 20286832-1 Sample Layers Asbestos Content Brown/White Insulation ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WTX01-A, White orangne peel wall texture over drywall Lab ID-Version‡: 20286833-1 Sample Layers Asbestos Content White Texture ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WTX01-B, White orangne peel wall texture over drywall Lab ID-Version‡: 20286834-1 Sample Layers Asbestos Content White Texture ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 21 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-WTX01-C, White orangne peel wall texture over drywall Lab ID-Version‡: 20286835-1 Sample Layers Asbestos Content White Texture ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WTX01-D, White orangne peel wall texture over drywall Lab ID-Version‡: 20286836-1 Sample Layers Asbestos Content White Texture ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WTX01-E, White orangne peel wall texture over drywall Lab ID-Version‡: 20286837-1 Sample Layers Asbestos Content White Texture ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CON02-A, Gray concrete with large pebbles Lab ID-Version‡: 20286838-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 22 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CON02-B, Gray concrete with large pebbles Lab ID-Version‡: 20286839-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CON02-C, Gray concrete with large pebbles Lab ID-Version‡: 20286840-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CON03-A, Gray grainy concrete Lab ID-Version‡: 20286841-1 Sample Layers Asbestos Content Green Paint 2% Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CON03-B, Gray grainy concrete Lab ID-Version‡: 20286842-1 Sample Layers Asbestos Content Green Paint 2% Gray Concrete ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 23 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CON03-C, Gray grainy concrete Lab ID-Version‡: 20286843-1 Sample Layers Asbestos Content Green Paint 2% Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-SD01-A, Brown grey particle board siding, painted white Lab ID-Version‡: 20286844-1 Sample Layers Asbestos Content White Non-Fibrous Material ND Gray Semi-Fibrous Material Particle Board ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-SD01-B, Brown grey particle board siding, painted white Lab ID-Version‡: 20286845-1 Sample Layers Asbestos Content White Non-Fibrous Material ND Gray Semi-Fibrous Material Particle Board ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-SD01-C, Brown grey particle board siding, painted white Lab ID-Version‡: 20286846-1 Sample Layers Asbestos Content White Non-Fibrous Material ND Gray Semi-Fibrous Material Particle Board ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 24 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-FP01-A, White styrofoam foundation padding Lab ID-Version‡: 20286847-1 Sample Layers Asbestos Content White Foam ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-FP01-B, White styrofoam foundation padding Lab ID-Version‡: 20286848-1 Sample Layers Asbestos Content White Foam ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-FP01-C, White styrofoam foundation padding Lab ID-Version‡: 20286849-1 Sample Layers Asbestos Content White Foam ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CON04-A, Tan concrete pads Lab ID-Version‡: 20286850-1 Sample Layers Asbestos Content Tan Concrete ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 25 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CON04-B, Tan concrete pads Lab ID-Version‡: 20286851-1 Sample Layers Asbestos Content Tan Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CON04-C, Tan concrete pads Lab ID-Version‡: 20286852-1 Sample Layers Asbestos Content Tan Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck_IT-RS01-A, Grey roofing system with shingles Lab ID-Version‡: 20286853-1 Sample Layers Asbestos Content Black Roofing Shingle with Pebbles 1 ND Black Roofing Shingle with Pebbles 2 ND Composite Non-Asbestos Content: 10% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-RS01-B, Grey roofing system with shingles Lab ID-Version‡: 20286854-1 Sample Layers Asbestos Content Black Roofing Shingle with Pebbles 1 ND Black Roofing Shingle with Pebbles 2 ND Black Roofing Tar and Felt ND Composite Non-Asbestos Content: 10% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 26 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-RS01-C, Grey roofing system with shingles Lab ID-Version‡: 20286855-1 Sample Layers Asbestos Content Black Roofing Shingle with Pebbles 1 ND Black Roofing Shingle with Pebbles 2 ND Black Roofing Tar and Felt ND Composite Non-Asbestos Content: 10% Glass Fibers 5% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-ASP01-A, Black asphalt Lab ID-Version‡: 20286856-1 Sample Layers Asbestos Content Black Asphalt ND Sample Composite Homogeneity: Good Location: HQ-Heck_IT-ASP01-B, Black asphalt Lab ID-Version‡: 20286857-1 Sample Layers Asbestos Content Black Asphalt ND Sample Composite Homogeneity: Good Location: HQ-Heck_IT-ASP01-C, Black asphalt Lab ID-Version‡: 20286858-1 Sample Layers Asbestos Content Black Asphalt ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 27 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CT05-A, White particle board ceiling tiles Lab ID-Version‡: 20286859-1 Sample Layers Asbestos Content Gray Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CT05-B, White particle board ceiling tiles Lab ID-Version‡: 20286860-1 Sample Layers Asbestos Content Gray Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CT05-C, White particle board ceiling tiles Lab ID-Version‡: 20286861-1 Sample Layers Asbestos Content Gray Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CFT01-A, Cream square ceramic tiles around stove Lab ID-Version‡: 20286862-1 Sample Layers Asbestos Content Tan Ceramic Tile ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 28 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CFT01-B, Cream square ceramic tiles around stove Lab ID-Version‡: 20286863-1 Sample Layers Asbestos Content Tan Ceramic Tile ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CFT01-C, Cream square ceramic tiles around stove Lab ID-Version‡: 20286864-1 Sample Layers Asbestos Content Tan Ceramic Tile ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON01-A, Grey 6x12" CMU blocks with grey grout Lab ID-Version‡: 20286865-1 Sample Layers Asbestos Content Gray Concrete with Paint ND Gray Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON01-B, Grey 6x12" CMU blocks with grey grout Lab ID-Version‡: 20286866-1 Sample Layers Asbestos Content Gray Concrete with Paint ND Gray Grout ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 29 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON01-C, Grey 6x12" CMU blocks with grey grout Lab ID-Version‡: 20286867-1 Sample Layers Asbestos Content Gray Concrete with Paint ND Gray Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT01-A, White with speckles 12x12" Vinyl floor, brown mastic Lab ID-Version‡: 20286868-1 Sample Layers Asbestos Content White Floor Tile ND Black Mastic < 1% Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT01-B, White with speckles 12x12" Vinyl floor, brown mastic Lab ID-Version‡: 20286869-1 Sample Layers Asbestos Content White Floor Tile ND Yellow Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT01-C, White with speckles 12x12" Vinyl floor, brown mastic Lab ID-Version‡: 20286870-1 Sample Layers Asbestos Content White Floor Tile ND Black Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 30 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-WT01-A, White with unidirectional squiggles and dots 9x9" wall tiles Lab ID-Version‡: 20286871-1 Sample Layers Asbestos Content Brown Ceiling Tile with White Surface ND Brown Mastic ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WT01-B, White with unidirectional squiggles and dots 9x9" wall tiles Lab ID-Version‡: 20286872-1 Sample Layers Asbestos Content Brown Ceiling Tile with White Surface ND Brown Mastic ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WT01-C, White with unidirectional squiggles and dots 9x9" wall tiles Lab ID-Version‡: 20286873-1 Sample Layers Asbestos Content Brown Ceiling Tile with White Surface ND Brown Mastic ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WP01-A, White bumpy wall panels Lab ID-Version‡: 20286874-1 Sample Layers Asbestos Content White Fiberglass Reinforced Plastic ND Composite Non-Asbestos Content: 50% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 31 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-WP01-B, White bumpy wall panels Lab ID-Version‡: 20286875-1 Sample Layers Asbestos Content White Fiberglass Reinforced Plastic ND Composite Non-Asbestos Content: 50% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-WP01-C, White bumpy wall panels Lab ID-Version‡: 20286876-1 Sample Layers Asbestos Content White Fiberglass Reinforced Plastic ND Composite Non-Asbestos Content: 50% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK01-A, Tan semi-malleable caulk Lab ID-Version‡: 20286877-1 Sample Layers Asbestos Content Gray Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK01-B, Tan semi-malleable caulk Lab ID-Version‡: 20286878-1 Sample Layers Asbestos Content Gray Caulk ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 32 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK01-C, Tan semi-malleable caulk Lab ID-Version‡: 20286879-1 Sample Layers Asbestos Content Gray Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CT01-A, White 2x2' holey ceiling tiles Lab ID-Version‡: 20286880-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT01-B, White 2x2' holey ceiling tiles Lab ID-Version‡: 20286881-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT01-C, White 2x2' holey ceiling tiles Lab ID-Version‡: 20286882-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 33 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CBM01-A, Brown 4" cove base with brown and beige mastic Lab ID-Version‡: 20286883-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM01-B, Brown 4" cove base with brown and beige mastic Lab ID-Version‡: 20286884-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM01-C, Brown 4" cove base with brown and beige mastic Lab ID-Version‡: 20286885-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF01-A, Smooth multicolor sheet flooring, beige mastic Lab ID-Version‡: 20286886-1 Sample Layers Asbestos Content Multicolored Sheet Flooring ND Beige Mastic ND Black Mastic (Trace) < 1% Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 34 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF01-B, Smooth multicolor sheet flooring, beige mastic Lab ID-Version‡: 20286887-1 Sample Layers Asbestos Content Multicolored Sheet Flooring ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF01-C, Smooth multicolor sheet flooring, beige mastic Lab ID-Version‡: 20286888-1 Sample Layers Asbestos Content Multicolored Sheet Flooring ND Beige Mastic ND Black Mastic (Trace) ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM01-A, White with Brown Dots Vinyl Countertop with Beige Mastic Lab ID-Version‡: 20286889-1 Sample Layers Asbestos Content White Countertop ND Beige Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM01-B, White with Brown Dots Vinyl Countertop with Beige Mastic Lab ID-Version‡: 20286890-1 Sample Layers Asbestos Content White Countertop ND Beige Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 35 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VCM01-C, White with Brown Dots Vinyl Countertop with Beige Mastic Lab ID-Version‡: 20286891-1 Sample Layers Asbestos Content White Countertop ND Beige Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM02-A, Brown 6" Cove Base with Tan Mastic Lab ID-Version‡: 20286892-1 Sample Layers Asbestos Content Brown Baseboard ND Tan Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM02-B, Brown 6" Cove Base with Tan Mastic Lab ID-Version‡: 20286893-1 Sample Layers Asbestos Content Brown Baseboard ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM02-C, Brown 6" Cove Base with Tan Mastic Lab ID-Version‡: 20286894-1 Sample Layers Asbestos Content Brown Baseboard ND Tan Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 36 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-DW01-A, Peach Small-Grain Drywall Lab ID-Version‡: 20286895-1 Sample Layers Asbestos Content Off-White Joint Compound 2% White Drywall with Brown/Green Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines. Location: HQ-Heck-DW01-B, Peach Small-Grain Drywall Lab ID-Version‡: 20286896-1 Sample Layers Asbestos Content Off-White Joint Compound 2% White Drywall with Brown/Green Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines. Location: HQ-Heck-DW01-C, Peach Small-Grain Drywall Lab ID-Version‡: 20286897-1 Sample Layers Asbestos Content White Drywall with Brown/Green Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor Location: HQ-Heck-CK02-A, Grey Beige White Hard Caulk Lab ID-Version‡: 20286898-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 37 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK02-B, Grey Beige White Hard Caulk Lab ID-Version‡: 20286899-1 Sample Layers Asbestos Content White Caulk ND Light Gray Caulk ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK02-C, Grey Beige White Hard Caulk Lab ID-Version‡: 20286900-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-SU01-A, Lavender Sink Undercoat Lab ID-Version‡: 20286901-1 Sample Layers Asbestos Content Purple Sink Undercoating 3% Sample Composite Homogeneity: Good Location: HQ-Heck-SU01-B, Lavender Sink Undercoat Lab ID-Version‡: 20286902-1 Sample Layers Asbestos Content Purple Sink Undercoating 3% Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 38 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-SU01-C, Lavender Sink Undercoat Lab ID-Version‡: 20286903-1 Sample Layers Asbestos Content Purple Sink Undercoating 3% Sample Composite Homogeneity: Good Location: HQ-Heck-CT02-A, White 2x4' Unidirectional Squiggles Ceiling Tile Lab ID-Version‡: 20286904-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 50% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT02-B, White 2x4' Unidirectional Squiggles Ceiling Tile Lab ID-Version‡: 20286905-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT02-C, White 2x4' Unidirectional Squiggles Ceiling Tile Lab ID-Version‡: 20286906-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 39 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CT03-A, White 2x4' Multidirectional Squiggles Ceiling Tile Lab ID-Version‡: 20286907-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 50% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT03-B, White 2x4' Multidirectional Squiggles Ceiling Tile Lab ID-Version‡: 20286908-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 50% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT03-C, White 2x4' Multidirectional Squiggles Ceiling Tile Lab ID-Version‡: 20286909-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM01-A, Green Carpet Pad with Dark Stripes Tan Mastic Lab ID-Version‡: 20286910-1 Sample Layers Asbestos Content Green Carpet ND Tan Mastic ND Gray Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 40 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM01-B, Green Carpet Pad with Dark Stripes Tan Mastic Lab ID-Version‡: 20286911-1 Sample Layers Asbestos Content Green Carpet ND Tan Mastic ND Gray Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM01-C, Green Carpet Pad with Dark Stripes Tan Mastic Lab ID-Version‡: 20286912-1 Sample Layers Asbestos Content Green Carpet ND Tan Mastic ND Gray Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM02-A, Green Carpet, Tan Mastic Lab ID-Version‡: 20286913-1 Sample Layers Asbestos Content Green Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM02-B, Green Carpet, Tan Mastic Lab ID-Version‡: 20286914-1 Sample Layers Asbestos Content Green Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 41 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM02-C, Green Carpet, Tan Mastic Lab ID-Version‡: 20286915-1 Sample Layers Asbestos Content Green Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CT04-A, White 9x9" Multidirectional Squiggle and Dot Ceiling Tile Lab ID-Version‡: 20286916-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT04-B, White 9x9" Multidirectional Squiggle and Dot Ceiling Tile Lab ID-Version‡: 20286917-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT04-C, White 9x9" Multidirectional Squiggle and Dot Ceiling Tile Lab ID-Version‡: 20286918-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 42 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-DW02-A, White Fine Grained Dry Wall Lab ID-Version‡: 20286919-1 Sample Layers Asbestos Content White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW02-B, White Fine Grained Dry Wall Lab ID-Version‡: 20286920-1 Sample Layers Asbestos Content White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW02-C, White Fine Grained Dry Wall Lab ID-Version‡: 20286921-1 Sample Layers Asbestos Content White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-FT01-A, Green Rectangular Cement Floor Tiles with White Grout Lab ID-Version‡: 20286922-1 Sample Layers Asbestos Content Green Tile ND Gray Grout ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 43 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-FT01-B, Green Rectangular Cement Floor Tiles with White Grout Lab ID-Version‡: 20286923-1 Sample Layers Asbestos Content Green Tile ND Gray Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-FT01-C, Green Rectangular Cement Floor Tiles with White Grout Lab ID-Version‡: 20286924-1 Sample Layers Asbestos Content Green Tile ND Gray Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM03-A, Grey 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286925-1 Sample Layers Asbestos Content Gray Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM03-B, Grey 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286926-1 Sample Layers Asbestos Content Gray Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 44 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CBM03-C, Grey 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286927-1 Sample Layers Asbestos Content Gray Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-SHG01-A, Wooden Shingles Lab ID-Version‡: 20286928-1 Sample Layers Asbestos Content Brown Wood Shingle ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-SHG01-B, Wooden Shingles Lab ID-Version‡: 20286929-1 Sample Layers Asbestos Content Brown Wood Shingle ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-SHG01-C, Wooden Shingles Lab ID-Version‡: 20286930-1 Sample Layers Asbestos Content Brown Wood Shingle ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 45 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT02-A, Grey Beige 9x9" Vinyl Floor Tiles, Black Mastic Lab ID-Version‡: 20286931-1 Sample Layers Asbestos Content Brown Floor Tile 5% Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT02-B, Grey Beige 9x9" Vinyl Floor Tiles, Black Mastic Lab ID-Version‡: 20286932-1 Sample Layers Asbestos Content Brown Floor Tile 5% Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT02-C, Grey Beige 9x9" Vinyl Floor Tiles, Black Mastic Lab ID-Version‡: 20286933-1 Sample Layers Asbestos Content Brown Floor Tile 5% Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON02-A, Grey Smooth Concrete Pad Lab ID-Version‡: 20286934-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 46 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON02-B, Grey Smooth Concrete Pad Lab ID-Version‡: 20286935-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON02-C, Grey Smooth Concrete Pad Lab ID-Version‡: 20286936-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON03-A, Grey Pebble Concrete Lab ID-Version‡: 20286937-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON03-B, Grey Pebble Concrete Lab ID-Version‡: 20286938-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 47 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON03-C, Grey Pebble Concrete Lab ID-Version‡: 20286939-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON04-A, Grey Rectangular Concrete Blocks Lab ID-Version‡: 20286940-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON04-B, Grey Rectangular Concrete Blocks Lab ID-Version‡: 20286941-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON04-C, Grey Rectangular Concrete Blocks Lab ID-Version‡: 20286942-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 48 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW01-A, White Pipe Insulation Wrap with Yellow Insulation Along 2" Pipe Runs Lab ID-Version‡: 20286943-1 Sample Layers Asbestos Content Silver Foil ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 7% Cellulose Sample Composite Homogeneity: Poor Location: HQ-Heck-PIW01-B, White Pipe Insulation Wrap with Yellow Insulation Along 2" Pipe Runs Lab ID-Version‡: 20286944-1 Sample Layers Asbestos Content Silver Foil ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 7% Cellulose Sample Composite Homogeneity: Poor Location: HQ-Heck-PIW01-C, White Pipe Insulation Wrap with Yellow Insulation Along 2" Pipe Runs Lab ID-Version‡: 20286945-1 Sample Layers Asbestos Content Silver Foil ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 7% Cellulose Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 49 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW02-A, White Pipe Insulation Wrap with Yellow Insulation Along 4" Pipe Runs Lab ID-Version‡: 20286946-1 Sample Layers Asbestos Content Silver Foil ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 7% Cellulose Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 50 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW02-B, White Pipe Insulation Wrap with Yellow Insulation Along 4" Pipe Runs Lab ID-Version‡: 20286947-1 Sample Layers Asbestos Content Silver Foil ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 7% Cellulose Sample Composite Homogeneity: Poor Location: HQ-Heck-PIW02-C, White Pipe Insulation Wrap with Yellow Insulation Along 4" Pipe Runs Lab ID-Version‡: 20286948-1 Sample Layers Asbestos Content Silver Foil ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 7% Cellulose Sample Composite Homogeneity: Poor Location: HQ-Heck-PL01-A, Grey Medium Grain Plaster with Pink Speckles Lab ID-Version‡: 20286949-1 Sample Layers Asbestos Content Gray Plaster ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-PL01-B, Grey Medium Grain Plaster with Pink Speckles Lab ID-Version‡: 20286950-1 Sample Layers Asbestos Content Gray Plaster ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 51 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PL01-C, Grey Medium Grain Plaster with Pink Speckles Lab ID-Version‡: 20286951-1 Sample Layers Asbestos Content Gray Plaster ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-PL01-D, Grey Medium Grain Plaster with Pink Speckles Lab ID-Version‡: 20286952-1 Sample Layers Asbestos Content Gray Plaster ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-PL01-E, Grey Medium Grain Plaster with Pink Speckles Lab ID-Version‡: 20286953-1 Sample Layers Asbestos Content Gray Plaster ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-INS01-A, Orange Foam Spray Insulation Lab ID-Version‡: 20286954-1 Sample Layers Asbestos Content Orange Foam ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 52 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-INS01-B, Orange Foam Spray Insulation Lab ID-Version‡: 20286955-1 Sample Layers Asbestos Content Orange Foam ND Sample Composite Homogeneity: Good Location: HQ-Heck-INS01-C, Orange Foam Spray Insulation Lab ID-Version‡: 20286956-1 Sample Layers Asbestos Content Orange Foam ND Sample Composite Homogeneity: Good Location: HQ-Heck-VFT03-A, White 12x12" Vinyl Floor Tiles with Brown and Grey Splotches, Brown Mastic Lab ID-Version‡: 20286957-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT03-B, White 12x12" Vinyl Floor Tiles with Brown and Grey Splotches, Brown Mastic Lab ID-Version‡: 20286958-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 53 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT03-C, White 12x12" Vinyl Floor Tiles with Brown and Grey Splotches, Brown Mastic Lab ID-Version‡: 20286959-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT04-A, White 12x12" Vinyl Floor Tiles with Brown and Grey Splotches, Brown Mastic Lab ID-Version‡: 20286960-1 Sample Layers Asbestos Content Green Floor Tile ND Black Mastic 5% Gray Leveling Compound ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT04-B, White 12x12" Vinyl Floor Tiles with Brown and Grey Splotches, Brown Mastic Lab ID-Version‡: 20286961-1 Sample Layers Asbestos Content Green Floor Tile ND Brown Mastic ND Gray Leveling Compound ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 54 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT04-C, White 12x12" Vinyl Floor Tiles with Brown and Grey Splotches, Brown Mastic Lab ID-Version‡: 20286962-1 Sample Layers Asbestos Content Green Floor Tile ND Brown Mastic ND Gray Leveling Compound ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 55 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CWT01-A, Tan 6x6" Ceramic Wall Tiles with White Grout Lab ID-Version‡: 20286963-1 Sample Layers Asbestos Content Tan Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT01-B, Tan 6x6" Ceramic Wall Tiles with White Grout Lab ID-Version‡: 20286964-1 Sample Layers Asbestos Content Tan Ceramic Tile ND Gray Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT01-C, Tan 6x6" Ceramic Wall Tiles with White Grout Lab ID-Version‡: 20286965-1 Sample Layers Asbestos Content Tan Ceramic Tile ND Gray Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW03-A, Grey Grainy Drywall Lab ID-Version‡: 20286966-1 Sample Layers Asbestos Content White Joint Compound 1 ND Cream Tape ND White Joint Compound 2 ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 56 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-DW03-B, Grey Grainy Drywall Lab ID-Version‡: 20286967-1 Sample Layers Asbestos Content White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor Location: HQ-Heck-DW03-C, Grey Grainy Drywall Lab ID-Version‡: 20286968-1 Sample Layers Asbestos Content Off-White Joint Compound 2% White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines. Location: HQ-Heck-CPM03-A, Blue with Pink and White Speckled Carpet, Brown Mastic Lab ID-Version‡: 20286969-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Gray Cementitious Material ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM03-B, Blue with Pink and White Speckled Carpet, Brown Mastic Lab ID-Version‡: 20286970-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Brown Floor Tile 5% Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 57 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM03-C, Blue with Pink and White Speckled Carpet, Brown Mastic Lab ID-Version‡: 20286971-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Black Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM04-A, Dark Blue Carpet with Light Blue Stitching, Brown Mastic Lab ID-Version‡: 20286972-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Gray Cementitious Material ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM04-B, Dark Blue Carpet with Light Blue Stitching, Brown Mastic Lab ID-Version‡: 20286973-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 58 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM04-C, Dark Blue Carpet with Light Blue Stitching, Brown Mastic Lab ID-Version‡: 20286974-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Black Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 59 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM05-A, Brown and Beige Splotched Carpet Squares, 2x2', Brown Mastic Lab ID-Version‡: 20286975-1 Sample Layers Asbestos Content Blue Carpet ND Black/Yellow Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM05-B, Brown and Beige Splotched Carpet Squares, 2x2', Brown Mastic Lab ID-Version‡: 20286976-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM05-C, Brown and Beige Splotched Carpet Squares, 2x2', Brown Mastic Lab ID-Version‡: 20286977-1 Sample Layers Asbestos Content Blue Carpet ND Yellow Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CK03-A, White Brittle Caulk Around Window Frames Lab ID-Version‡: 20286978-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 60 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK03-B, White Brittle Caulk Around Window Frames Lab ID-Version‡: 20286979-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK03-C, White Brittle Caulk Around Window Frames Lab ID-Version‡: 20286980-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-VCM02-A, Beige and Tan Marble Detail Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20286981-1 Sample Layers Asbestos Content Beige Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 70% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM02-B, Beige and Tan Marble Detail Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20286982-1 Sample Layers Asbestos Content Beige Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 70% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 61 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VCM02-C, Beige and Tan Marble Detail Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20286983-1 Sample Layers Asbestos Content Beige Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 70% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM04-A, Black 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286984-1 Sample Layers Asbestos Content Black Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Good Location: HQ-Heck-CBM04-B, Black 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286985-1 Sample Layers Asbestos Content Black Baseboard ND Beige Mastic ND Brown Mastic ND Sample Composite Homogeneity: Good Location: HQ-Heck-CBM04-C, Black 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286986-1 Sample Layers Asbestos Content Black Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 62 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-SU02-A, Grey Sink Undercoat Lab ID-Version‡: 20286987-1 Sample Layers Asbestos Content Gray Sink Undercoating ND Sample Composite Homogeneity: Good Location: HQ-Heck-SU02-B, Grey Sink Undercoat Lab ID-Version‡: 20286988-1 Sample Layers Asbestos Content Gray Sink Undercoating ND Sample Composite Homogeneity: Good Location: HQ-Heck-SU02-C, Grey Sink Undercoat Lab ID-Version‡: 20286989-1 Sample Layers Asbestos Content Gray Sink Undercoating ND Sample Composite Homogeneity: Good Location: HQ-Heck-CT05-A, White 2x2'Ceiling Tiles with Holes Lab ID-Version‡: 20286990-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 60% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 63 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CT05-B, White 2x2'Ceiling Tiles with Holes Lab ID-Version‡: 20286991-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 60% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT05-C, White 2x2'Ceiling Tiles with Holes Lab ID-Version‡: 20286992-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 60% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF02-A, Stone Pattern Vinyl Sheet Flooring Brown Mastic Lab ID-Version‡: 20286993-1 Sample Layers Asbestos Content Light Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF02-B, Stone Pattern Vinyl Sheet Flooring Brown Mastic Lab ID-Version‡: 20286994-1 Sample Layers Asbestos Content Light Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 64 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF02-C, Stone Pattern Vinyl Sheet Flooring Brown Mastic Lab ID-Version‡: 20286995-1 Sample Layers Asbestos Content Light Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW04-A, Pink Medium Grain Drywall with Brown Paper Lab ID-Version‡: 20286996-1 Sample Layers Asbestos Content White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW04-B, Pink Medium Grain Drywall with Brown Paper Lab ID-Version‡: 20286997-1 Sample Layers Asbestos Content White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW04-C, Pink Medium Grain Drywall with Brown Paper Lab ID-Version‡: 20286998-1 Sample Layers Asbestos Content White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 65 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CBM05-A, Brown 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286999-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM05-B, Brown 4" Cove Base with Beige Mastic Lab ID-Version‡: 20287000-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM05-C, Brown 4" Cove Base with Beige Mastic Lab ID-Version‡: 20287001-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW05-A, White Medium Grained Drywall with Yellowish Paper Lab ID-Version‡: 20287002-1 Sample Layers Asbestos Content Off-White Joint Compound 2% White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines. EMLab ID: 4066845, Page 66 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-DW05-B, White Medium Grained Drywall with Yellowish Paper Lab ID-Version‡: 20287003-1 Sample Layers Asbestos Content White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW05-C, White Medium Grained Drywall with Yellowish Paper Lab ID-Version‡: 20287004-1 Sample Layers Asbestos Content Off-White Joint Compound 2% White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines. Location: HQ-Heck-VSF03-A, Brown Wood Design Vinyl Sheet Flooring, Brown Mastic Lab ID-Version‡: 20287005-1 Sample Layers Asbestos Content Brown Sheet Flooring ND Brown Mastic ND Sample Composite Homogeneity: Good Location: HQ-Heck-VSF03-B, Brown Wood Design Vinyl Sheet Flooring, Brown Mastic Lab ID-Version‡: 20287006-1 Sample Layers Asbestos Content Brown Sheet Flooring ND Brown Mastic ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 67 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF03-C, Brown Wood Design Vinyl Sheet Flooring, Brown Mastic Lab ID-Version‡: 20287007-1 Sample Layers Asbestos Content Brown Sheet Flooring ND Brown Mastic ND Sample Composite Homogeneity: Good Location: HQ-Heck-CBM06-A, Brown 4" Cove Base with Brown Mastic Lab ID-Version‡: 20287008-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Brown Mastic ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CBM06-B, Brown 4" Cove Base with Brown Mastic Lab ID-Version‡: 20287009-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Brown Mastic ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CBM06-C, Brown 4" Cove Base with Brown Mastic Lab ID-Version‡: 20287010-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Brown Mastic ND Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 68 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-SU03-A, Black Sink Undercoat Lab ID-Version‡: 20287011-1 Sample Layers Asbestos Content Black Sink Undercoating 2% Sample Composite Homogeneity: Good Location: HQ-Heck-SU03-B, Black Sink Undercoat Lab ID-Version‡: 20287012-1 Sample Layers Asbestos Content Black Sink Undercoating 2% Sample Composite Homogeneity: Good Location: HQ-Heck-SU03-C, Black Sink Undercoat Lab ID-Version‡: 20287013-1 Sample Layers Asbestos Content Black Sink Undercoating 2% Sample Composite Homogeneity: Good Location: HQ-Heck-VCM03-A, Green with White Speckles Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287014-1 Sample Layers Asbestos Content Green Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 69 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VCM03-B, Green with White Speckles Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287015-1 Sample Layers Asbestos Content Brown Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM03-C, Green with White Speckles Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287016-1 Sample Layers Asbestos Content Green Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM07-A, Brown 4" Cove Base with Brown Mastic Lab ID-Version‡: 20287017-1 Sample Layers Asbestos Content Brown Baseboard ND Brown Mastic < 1% Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM07-B, Brown 4" Cove Base with Brown Mastic Lab ID-Version‡: 20287018-1 Sample Layers Asbestos Content Brown Baseboard ND Tan Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 70 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CBM07-C, Brown 4" Cove Base with Brown Mastic Lab ID-Version‡: 20287019-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Brown Mastic < 1% Sample Composite Homogeneity: Poor Location: HQ-Heck-VCM04-A, Purple Blue Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287020-1 Sample Layers Asbestos Content Purple Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM04-B, Purple Blue Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287021-1 Sample Layers Asbestos Content Purple Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM04-C, Purple Blue Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287022-1 Sample Layers Asbestos Content Purple Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 71 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-WB01-A, Plywood Wall Board with Brown Mastic Lab ID-Version‡: 20287023-1 Sample Layers Asbestos Content Brown Fiberboard ND Brown Mastic ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB01-B, Plywood Wall Board with Brown Mastic Lab ID-Version‡: 20287024-1 Sample Layers Asbestos Content Brown Fiberboard ND Brown Mastic ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB01-C, Plywood Wall Board with Brown Mastic Lab ID-Version‡: 20287025-1 Sample Layers Asbestos Content Brown Fiberboard ND Brown Mastic ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK05-A, Blue Brittle Hard Caulk Along AC Unit Seams Lab ID-Version‡: 20287026-1 Sample Layers Asbestos Content Blue Caulk ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 72 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK05-B, Blue Brittle Hard Caulk Along AC Unit Seams Lab ID-Version‡: 20287027-1 Sample Layers Asbestos Content Blue Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK05-C, Blue Brittle Hard Caulk Along AC Unit Seams Lab ID-Version‡: 20287028-1 Sample Layers Asbestos Content Blue Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CT06-A, White 12x12" Ceiling Tiles with Two Sizes of Holes Lab ID-Version‡: 20287029-1 Sample Layers Asbestos Content Brown Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT06-B, White 12x12" Ceiling Tiles with Two Sizes of Holes Lab ID-Version‡: 20287030-1 Sample Layers Asbestos Content Brown Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 73 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CT06-C, White 12x12" Ceiling Tiles with Two Sizes of Holes Lab ID-Version‡: 20287031-1 Sample Layers Asbestos Content Brown Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT14-A, Grey Beige with Red Streaks 9x9" Vinyl Floor Tiles, Black Mastic Lab ID-Version‡: 20287032-1 Sample Layers Asbestos Content Tan Floor Tile ND Brown Floor Tile 5% Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT14-B, Grey Beige with Red Streaks 9x9" Vinyl Floor Tiles, Black Mastic Lab ID-Version‡: 20287033-1 Sample Layers Asbestos Content Brown Floor Tile 5% Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT14-C, Grey Beige with Red Streaks 9x9" Vinyl Floor Tiles, Black Mastic Lab ID-Version‡: 20287034-1 Sample Layers Asbestos Content Brown Floor Tile 5% Black Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 74 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM06-A, Dark Green Carpet with Multicolor Diagonal Streaks and Speckles, Brown Mastic Lab ID-Version‡: 20287035-1 Sample Layers Asbestos Content Green Carpet ND Yellow Mortar ND Black Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM06-B, Dark Green Carpet with Multicolor Diagonal Streaks and Speckles, Brown Mastic Lab ID-Version‡: 20287036-1 Sample Layers Asbestos Content Green Carpet ND Yellow Mortar ND Black Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM06-C, Dark Green Carpet with Multicolor Diagonal Streaks and Speckles, Brown Mastic Lab ID-Version‡: 20287037-1 Sample Layers Asbestos Content Green Carpet ND Yellow Mortar ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CT07-A, White 2x4' Ceiling Tiles with Brown Unidirectional Squiggles Lab ID-Version‡: 20287038-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 60% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 75 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CT07-B, White 2x4' Ceiling Tiles with Brown Unidirectional Squiggles Lab ID-Version‡: 20287039-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 60% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT07-C, White 2x4' Ceiling Tiles with Brown Unidirectional Squiggles Lab ID-Version‡: 20287040-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 60% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT05-A, Beige 12x12" Vinyl Floor Tile with Grey and White Splotch Streaks, Brown Mastic Lab ID-Version‡: 20287041-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT05-B, Beige 12x12" Vinyl Floor Tile with Grey and White Splotch Streaks, Brown Mastic Lab ID-Version‡: 20287042-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 76 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT05-C, Beige 12x12" Vinyl Floor Tile with Grey and White Splotch Streaks, Brown Mastic Lab ID-Version‡: 20287043-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM05-A, Blue Vinyl Countertop with Beige Mastic Lab ID-Version‡: 20287044-1 Sample Layers Asbestos Content Blue Countertop ND Beige Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM05-B, Blue Vinyl Countertop with Beige Mastic Lab ID-Version‡: 20287045-1 Sample Layers Asbestos Content Blue Countertop ND Beige Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM05-C, Blue Vinyl Countertop with Beige Mastic Lab ID-Version‡: 20287046-1 Sample Layers Asbestos Content Blue Countertop ND Beige Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 77 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM07-A, Reddish Brown Carpet with Beige Mastic Lab ID-Version‡: 20287047-1 Sample Layers Asbestos Content Brown Carpet ND Beige Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM07-B, Reddish Brown Carpet with Beige Mastic Lab ID-Version‡: 20287048-1 Sample Layers Asbestos Content Brown Carpet ND Beige Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM07-C, Reddish Brown Carpet with Beige Mastic Lab ID-Version‡: 20287049-1 Sample Layers Asbestos Content Brown Carpet ND Beige Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT06-A, Dark Beige with Multicolor Swirl Splotches, 12x12" Vinyl Floor Tile Brown Mastic Lab ID-Version‡: 20287050-1 Sample Layers Asbestos Content Beige Floor Tile ND Black Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 78 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT06-B, Dark Beige with Multicolor Swirl Splotches, 12x12" Vinyl Floor Tile Brown Mastic Lab ID-Version‡: 20287051-1 Sample Layers Asbestos Content Beige Floor Tile ND Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT06-C, Dark Beige with Multicolor Swirl Splotches, 12x12" Vinyl Floor Tile Brown Mastic Lab ID-Version‡: 20287052-1 Sample Layers Asbestos Content Beige Floor Tile ND Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM08-A, Green Brown 2x2' Carpet Squres with Blue and Brown Streaks with Brown Mastic Lab ID-Version‡: 20287053-1 Sample Layers Asbestos Content Gray Carpet ND Black Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM08-B, Green Brown 2x2' Carpet Squres with Blue and Brown Streaks with Brown Mastic Lab ID-Version‡: 20287054-1 Sample Layers Asbestos Content Gray Carpet ND Beige Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 79 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM08-C, Green Brown 2x2' Carpet Squres with Blue and Brown Streaks with Brown Mastic Lab ID-Version‡: 20287055-1 Sample Layers Asbestos Content Gray Carpet ND Beige Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB02-A, Brown Painted White Wall Board with Beige Mastic and Green Chalkboard Lab ID-Version‡: 20287056-1 Sample Layers Asbestos Content Brown Fiberboard ND Green Chalkboard 7% Composite Non-Asbestos Content: 60% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB02-B, Brown Painted White Wall Board with Beige Mastic and Green Chalkboard Lab ID-Version‡: 20287057-1 Sample Layers Asbestos Content Brown Fiberboard ND Green Chalkboard 7% Composite Non-Asbestos Content: 60% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB02-C, Brown Painted White Wall Board with Beige Mastic and Green Chalkboard Lab ID-Version‡: 20287058-1 Sample Layers Asbestos Content Brown Fiberboard ND Green Chalkboard 7% Composite Non-Asbestos Content: 60% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 80 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM09-A, Grey Carpet with Beige and Brown Speckles with Brown Mastic Lab ID-Version‡: 20287059-1 Sample Layers Asbestos Content Gray Carpet ND Brown Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM09-B, Grey Carpet with Beige and Brown Speckles with Brown Mastic Lab ID-Version‡: 20287060-1 Sample Layers Asbestos Content Gray Carpet ND Brown Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM09-C, Grey Carpet with Beige and Brown Speckles with Brown Mastic Lab ID-Version‡: 20287061-1 Sample Layers Asbestos Content Gray Carpet ND Brown Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM06-A, Green Marble Pattern Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287062-1 Sample Layers Asbestos Content Green Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 81 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VCM06-B, Green Marble Pattern Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287063-1 Sample Layers Asbestos Content Green Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM06-C, Green Marble Pattern Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287064-1 Sample Layers Asbestos Content Green Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK06-A, White Thick Hard Caulk Around Doors Lab ID-Version‡: 20287065-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK06-B, White Thick Hard Caulk Around Doors Lab ID-Version‡: 20287066-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 82 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK06-C, White Thick Hard Caulk Around Doors Lab ID-Version‡: 20287067-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF04-A, Grey Stone Pattern Sheet Flooring with Brown Mastic Lab ID-Version‡: 20287068-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 5% Cellulose 4% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-VSF04-B, Grey Stone Pattern Sheet Flooring with Brown Mastic Lab ID-Version‡: 20287069-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 5% Cellulose 4% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-VSF04-C, Grey Stone Pattern Sheet Flooring with Brown Mastic Lab ID-Version‡: 20287070-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 5% Cellulose 4% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 83 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF05-A, Light Grey Giraffe Pattern Vinyl Sheet Floor, Brown Mastic Lab ID-Version‡: 20287071-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Tan Mastic ND Brown Mastic ND Composite Non-Asbestos Content: 20% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-VSF05-B, Light Grey Giraffe Pattern Vinyl Sheet Floor, Brown Mastic Lab ID-Version‡: 20287072-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Tan Mastic ND Brown Mastic ND Composite Non-Asbestos Content: 20% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-VSF05-C, Light Grey Giraffe Pattern Vinyl Sheet Floor, Brown Mastic Lab ID-Version‡: 20287073-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Tan Mastic ND Brown Mastic ND Composite Non-Asbestos Content: 20% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-WPR01-A, Beige and Brown Splotch Wallpaper Lab ID-Version‡: 20287074-1 Sample Layers Asbestos Content Beige Wallpaper ND Gray Fibrous Material ND Composite Non-Asbestos Content: 25% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 84 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-WPR01-B, Beige and Brown Splotch Wallpaper Lab ID-Version‡: 20287075-1 Sample Layers Asbestos Content Beige Wallpaper ND Gray Fibrous Material ND Composite Non-Asbestos Content: 25% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WPR01-C, Beige and Brown Splotch Wallpaper Lab ID-Version‡: 20287076-1 Sample Layers Asbestos Content Beige Wallpaper ND Gray Fibrous Material ND Composite Non-Asbestos Content: 25% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM07-A, Beige with Speckle Vinyl Counter Top with Brown Mastic Lab ID-Version‡: 20287077-1 Sample Layers Asbestos Content Beige Countertop ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM07-B, Beige with Speckle Vinyl Counter Top with Brown Mastic Lab ID-Version‡: 20287078-1 Sample Layers Asbestos Content Beige Countertop ND Brown Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 85 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VCM07-C, Beige with Speckle Vinyl Counter Top with Brown Mastic Lab ID-Version‡: 20287079-1 Sample Layers Asbestos Content Beige Countertop ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-WP02-A, Blue Wall Padding with Brown Mastic Lab ID-Version‡: 20287080-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Padding) ND Sample Composite Homogeneity: Good Comments: No brown mastic detected. Location: HQ-Heck-WP02-B, Blue Wall Padding with Brown Mastic Lab ID-Version‡: 20287081-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Padding) ND Sample Composite Homogeneity: Good Comments: No brown mastic detected. Location: HQ-Heck-WP02-C, Blue Wall Padding with Brown Mastic Lab ID-Version‡: 20287082-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Padding) ND Sample Composite Homogeneity: Good Comments: No brown mastic detected. EMLab ID: 4066845, Page 86 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM10-A, Red Carpet with Diamond Pattern, Tan Mastic Lab ID-Version‡: 20287083-1 Sample Layers Asbestos Content Red Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM10-B, Red Carpet with Diamond Pattern, Tan Mastic Lab ID-Version‡: 20287084-1 Sample Layers Asbestos Content Red Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM10-C, Red Carpet with Diamond Pattern, Tan Mastic Lab ID-Version‡: 20287085-1 Sample Layers Asbestos Content Red Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM11-A, Red Carpet with Diamond Pattern, Tan Mastic Lab ID-Version‡: 20287086-1 Sample Layers Asbestos Content Red Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 87 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM11-B, Red Carpet with Diamond Pattern, Tan Mastic Lab ID-Version‡: 20287087-1 Sample Layers Asbestos Content Red Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM11-C, Red Carpet with Diamond Pattern, Tan Mastic Lab ID-Version‡: 20287088-1 Sample Layers Asbestos Content Red Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT02-A, Pink Square Ceramic Wall Tile with White Grout Lab ID-Version‡: 20287089-1 Sample Layers Asbestos Content Pink Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT02-B, Pink Square Ceramic Wall Tile with White Grout Lab ID-Version‡: 20287090-1 Sample Layers Asbestos Content Pink Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 88 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CWT02-C, Pink Square Ceramic Wall Tile with White Grout Lab ID-Version‡: 20287091-1 Sample Layers Asbestos Content Pink Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT07-A, Grey 2x2' with Beige Splotches Vinyl Floor Tile, Brown Mastic Lab ID-Version‡: 20287092-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Black Mastic 2% Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT07-B, Grey 2x2' with Beige Splotches Vinyl Floor Tile, Brown Mastic Lab ID-Version‡: 20287093-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Black Mastic (Trace) 2% Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT07-C, Grey 2x2' with Beige Splotches Vinyl Floor Tile, Brown Mastic Lab ID-Version‡: 20287094-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 89 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT08-A, Beige 12x12" With Red Streaks Vinyl Floor Tile with Brown Mastic Lab ID-Version‡: 20287095-1 Sample Layers Asbestos Content Beige Floor Tile 2% Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT08-B, Beige 12x12" With Red Streaks Vinyl Floor Tile with Brown Mastic Lab ID-Version‡: 20287096-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT08-C, Beige 12x12" With Red Streaks Vinyl Floor Tile with Brown Mastic Lab ID-Version‡: 20287097-1 Sample Layers Asbestos Content Beige Floor Tile 2% Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM12-A, Blue with Purple and Pink Speckle Carpet with Tan Mastic Lab ID-Version‡: 20287098-1 Sample Layers Asbestos Content Multicolored Carpet ND Tan Mastic ND Black Mastic 2% Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 90 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM12-B, Blue with Purple and Pink Speckle Carpet with Tan Mastic Lab ID-Version‡: 20287099-1 Sample Layers Asbestos Content Multicolored Carpet ND Tan Mastic ND Black Mastic 2% Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM12-C, Blue with Purple and Pink Speckle Carpet with Tan Mastic Lab ID-Version‡: 20287100-1 Sample Layers Asbestos Content Multicolored Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CBM08-A, Black 6" Cove Base with Beige Mastic Lab ID-Version‡: 20287101-1 Sample Layers Asbestos Content Black Cove Base ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM08-B, Black 6" Cove Base with Beige Mastic Lab ID-Version‡: 20287102-1 Sample Layers Asbestos Content Black Cove Base ND Beige Mastic ND White Compound ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 91 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CBM08-C, Black 6" Cove Base with Beige Mastic Lab ID-Version‡: 20287103-1 Sample Layers Asbestos Content Black Cove Base ND Beige Mastic ND White Compound < 1% Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM08-A, Beige Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287104-1 Sample Layers Asbestos Content Brown Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 40% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM08-B, Beige Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287105-1 Sample Layers Asbestos Content Brown Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 40% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM08-C, Beige Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287106-1 Sample Layers Asbestos Content Brown Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 40% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 92 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK07-A, White Hard Caulk Around Bottom of Doorway Lab ID-Version‡: 20287107-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK07-B, White Hard Caulk Around Bottom of Doorway Lab ID-Version‡: 20287108-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK07-C, White Hard Caulk Around Bottom of Doorway Lab ID-Version‡: 20287109-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CPM13-A, Multicolor Linear Carpet(Blue, Green, Brown, Red) Tan Mastic Lab ID-Version‡: 20287110-1 Sample Layers Asbestos Content Multicolored Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 93 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM13-B, Multicolor Linear Carpet(Blue, Green, Brown, Red) Tan Mastic Lab ID-Version‡: 20287111-1 Sample Layers Asbestos Content Multicolored Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM13-C, Multicolor Linear Carpet(Blue, Green, Brown, Red) Tan Mastic Lab ID-Version‡: 20287112-1 Sample Layers Asbestos Content Multicolored Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT09-A, Beige and Grey Vinyl Floor with White and Brown Wave Pattern, Brown Mastic Lab ID-Version‡: 20287113-1 Sample Layers Asbestos Content Gray Floor Tile ND Black/Yellow Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT09-B, Beige and Grey Vinyl Floor with White and Brown Wave Pattern, Brown Mastic Lab ID-Version‡: 20287114-1 Sample Layers Asbestos Content Gray Floor Tile ND Black/Yellow Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 94 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT09-C, Beige and Grey Vinyl Floor with White and Brown Wave Pattern, Brown Mastic Lab ID-Version‡: 20287115-1 Sample Layers Asbestos Content Gray Floor Tile ND Black/Yellow Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW06-A, White Small Grained Thin Drywall Layers Lab ID-Version‡: 20287116-1 Sample Layers Asbestos Content White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 5% Cellulose 2% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW06-B, White Small Grained Thin Drywall Layers Lab ID-Version‡: 20287117-1 Sample Layers Asbestos Content White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 5% Cellulose 2% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW06-C, White Small Grained Thin Drywall Layers Lab ID-Version‡: 20287118-1 Sample Layers Asbestos Content White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 5% Cellulose 2% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 95 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-SU04-A, White and Blue Sink Undercoat Lab ID-Version‡: 20287119-1 Sample Layers Asbestos Content White Sink Undercoating ND Composite Non-Asbestos Content: 3% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-SU04-B, White and Blue Sink Undercoat Lab ID-Version‡: 20287120-1 Sample Layers Asbestos Content White Sink Undercoating ND Composite Non-Asbestos Content: 3% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-SU04-C, White and Blue Sink Undercoat Lab ID-Version‡: 20287121-1 Sample Layers Asbestos Content White Sink Undercoating ND Composite Non-Asbestos Content: 3% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-VCM09-A, Beige and Peach Vinyl Countertop, Speckled Brown Mastic Lab ID-Version‡: 20287122-1 Sample Layers Asbestos Content Brown Mastic ND Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 96 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VCM09-B, Beige and Peach Vinyl Countertop, Speckled Brown Mastic Lab ID-Version‡: 20287123-1 Sample Layers Asbestos Content Brown Mastic ND Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-VCM09-C, Beige and Peach Vinyl Countertop, Speckled Brown Mastic Lab ID-Version‡: 20287124-1 Sample Layers Asbestos Content Brown Mastic ND Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-VFT10-A, White 12x12 Vinyl Floor with Blue Splotches, Brown Mastic Lab ID-Version‡: 20287125-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic 3% Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT10-B, White 12x12 Vinyl Floor with Blue Splotches, Brown Mastic Lab ID-Version‡: 20287126-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic 3% Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 97 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT10-C, White 12x12 Vinyl Floor with Blue Splotches, Brown Mastic Lab ID-Version‡: 20287127-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic 3% Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM14-A, Dark Blue 2x2' Square Carpet Tiles with Linear Striping Brown Mastic Lab ID-Version‡: 20287128-1 Sample Layers Asbestos Content Gray Carpet Tile ND Brown Mastic ND Gray Leveling Compound ND Composite Non-Asbestos Content: 50% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM14-B, Dark Blue 2x2' Square Carpet Tiles with Linear Striping Brown Mastic Lab ID-Version‡: 20287129-1 Sample Layers Asbestos Content Gray Carpet Tile ND Brown Mastic ND Gray Leveling Compound ND Composite Non-Asbestos Content: 50% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM14-C, Dark Blue 2x2' Square Carpet Tiles with Linear Striping Brown Mastic Lab ID-Version‡: 20287130-1 Sample Layers Asbestos Content Gray Carpet Tile ND Brown Mastic ND Composite Non-Asbestos Content: 50% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 98 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM15-A, Brown and Grey Linear Pattern 2x2' Carpet Squares, Brown Mastic Lab ID-Version‡: 20287131-1 Sample Layers Asbestos Content Gray Carpet Tile ND Green Mastic ND Black Mastic ND Gray Leveling Compound ND Composite Non-Asbestos Content: 50% Fibers Sample Composite Homogeneity: Moderate Comments: Brown Mastic Not Detected. Location: HQ-Heck-CPM15-B, Brown and Grey Linear Pattern 2x2' Carpet Squares, Brown Mastic Lab ID-Version‡: 20287132-1 Sample Layers Asbestos Content Gray Carpet Tile ND Green Mastic ND Black Mastic ND Gray Leveling Compound ND Composite Non-Asbestos Content: 50% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM15-C, Brown and Grey Linear Pattern 2x2' Carpet Squares, Brown Mastic Lab ID-Version‡: 20287133-1 Sample Layers Asbestos Content Gray Carpet Tile ND Green Mastic ND Black Mastic ND Gray Leveling Compound ND Composite Non-Asbestos Content: 50% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 99 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF06-A, Beige Tan Marble Stone Pattern Vinyl Sheet Flooring, Brown Mastic Lab ID-Version‡: 20287134-1 Sample Layers Asbestos Content Beige Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 100 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF06-B, Beige Tan Marble Stone Pattern Vinyl Sheet Flooring, Brown Mastic Lab ID-Version‡: 20287135-1 Sample Layers Asbestos Content Beige Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF06-C, Beige Tan Marble Stone Pattern Vinyl Sheet Flooring, Brown Mastic Lab ID-Version‡: 20287136-1 Sample Layers Asbestos Content Beige Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM09-A, Brown 6" Cove Base with Beige Mastic Lab ID-Version‡: 20287137-1 Sample Layers Asbestos Content Brown Cove Base ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM09-B, Brown 6" Cove Base with Beige Mastic Lab ID-Version‡: 20287138-1 Sample Layers Asbestos Content Brown Cove Base ND Beige Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 101 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CBM09-C, Brown 6" Cove Base with Beige Mastic Lab ID-Version‡: 20287139-1 Sample Layers Asbestos Content Brown Cove Base ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF07-A, Multicolor Stone Pattern Vinyl Sheet Flooring, Beige Mastic Lab ID-Version‡: 20287140-1 Sample Layers Asbestos Content Beige Sheet Flooring with Fibrous Backing ND Beige Mastic ND Tan Floor Tile (Trace) 3% Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF07-B, Multicolor Stone Pattern Vinyl Sheet Flooring, Beige Mastic Lab ID-Version‡: 20287141-1 Sample Layers Asbestos Content Beige Sheet Flooring with Fibrous Backing ND Beige Mastic ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF07-C, Multicolor Stone Pattern Vinyl Sheet Flooring, Beige Mastic Lab ID-Version‡: 20287142-1 Sample Layers Asbestos Content Beige Sheet Flooring with Fibrous Backing ND Beige Mastic ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 102 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT11-A, White 12x12" Vinyl Floor Tile with Blue and Brown Splotches, Brown Mastic Lab ID-Version‡: 20287143-1 Sample Layers Asbestos Content White Sheet Flooring with Fibrous Backing ND Brown Mastic ND White Floor Tile ND Yellow Mastic ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT11-B, White 12x12" Vinyl Floor Tile with Blue and Brown Splotches, Brown Mastic Lab ID-Version‡: 20287144-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic ND Composite Non-Asbestos Content: < 1% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT11-C, White 12x12" Vinyl Floor Tile with Blue and Brown Splotches, Brown Mastic Lab ID-Version‡: 20287145-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic ND Gray Leveling Compound ND Composite Non-Asbestos Content: < 1% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT12-A, Beige Tan 9x9" Vinyl Floor Tiles, Brown Mastic Lab ID-Version‡: 20287146-1 Sample Layers Asbestos Content Tan Floor Tile 5% Black Mastic ND Composite Non-Asbestos Content: < 1% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 103 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT12-B, Beige Tan 9x9" Vinyl Floor Tiles, Brown Mastic Lab ID-Version‡: 20287147-1 Sample Layers Asbestos Content Tan Floor Tile 5% Black Mastic ND Composite Non-Asbestos Content: < 1% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT12-C, Beige Tan 9x9" Vinyl Floor Tiles, Brown Mastic Lab ID-Version‡: 20287148-1 Sample Layers Asbestos Content Tan Floor Tile 5% Black Mastic ND Composite Non-Asbestos Content: < 1% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON05-A, Grey Medium Mineral Lab ID-Version‡: 20287149-1 Sample Layers Asbestos Content Gray Cementitious Material ND Sample Composite Homogeneity: Good Location: HQ-Heck-CON05-B, Grey Medium Mineral Lab ID-Version‡: 20287150-1 Sample Layers Asbestos Content Gray Cementitious Material ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 104 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON05-C, Grey Medium Mineral Lab ID-Version‡: 20287151-1 Sample Layers Asbestos Content Gray Cementitious Material ND Sample Composite Homogeneity: Good Location: HQ-Heck-CON06-A, Light Grey White Concrete Pad with Large Mineral Lab ID-Version‡: 20287152-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck-CON06-B, Light Grey White Concrete Pad with Large Mineral Lab ID-Version‡: 20287153-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck-CON06-C, Light Grey White Concrete Pad with Large Mineral Lab ID-Version‡: 20287154-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 105 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-FCB01-A, Black Felt Concrete Barrier Lab ID-Version‡: 20287155-1 Sample Layers Asbestos Content Gray Felt ND Composite Non-Asbestos Content: 100% Fibers Sample Composite Homogeneity: Good Location: HQ-Heck-FCB01-B, Black Felt Concrete Barrier Lab ID-Version‡: 20287156-1 Sample Layers Asbestos Content Gray Felt ND Composite Non-Asbestos Content: 100% Fibers Sample Composite Homogeneity: Good Location: HQ-Heck-FCB01-C, Black Felt Concrete Barrier Lab ID-Version‡: 20287157-1 Sample Layers Asbestos Content Gray Felt ND Composite Non-Asbestos Content: 100% Fibers Sample Composite Homogeneity: Good Location: HQ-Heck-CON07-A, Gray Concrete Foundation Lab ID-Version‡: 20287158-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 106 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON07-B, Gray Concrete Foundation Lab ID-Version‡: 20287159-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck-CON07-C, Gray Concrete Foundation Lab ID-Version‡: 20287160-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK08-A, White Brittle Caulk Lab ID-Version‡: 20287161-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK08-B, White Brittle Caulk Lab ID-Version‡: 20287162-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 107 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK08-C, White Brittle Caulk Lab ID-Version‡: 20287163-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-WB03-A, Brown Painted Wooden/Plywood Wall Board Lab ID-Version‡: 20287164-1 Sample Layers Asbestos Content White Non-Fibrous Material (Walllbaord) < 1% Gray Non-Fibrous Material (Wallboard) 10% Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB03-B, Brown Painted Wooden/Plywood Wall Board Lab ID-Version‡: 20287165-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Wallboard) 10% Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB03-C, Brown Painted Wooden/Plywood Wall Board Lab ID-Version‡: 20287166-1 Sample Layers Asbestos Content White Non-Fibrous Material (Walllbaord) < 1% Gray Non-Fibrous Material (Wallboard) 10% Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 108 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK09-A, White Tan Caulk Lab ID-Version‡: 20287167-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK09-B, White Tan Caulk Lab ID-Version‡: 20287168-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK09-C, White Tan Caulk Lab ID-Version‡: 20287169-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-WB04-A, White Verticle Wood Wall Board Lab ID-Version‡: 20287170-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Wallboard) ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 109 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-WB04-B, White Verticle Wood Wall Board Lab ID-Version‡: 20287171-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Wallboard) ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-WB04-C, White Verticle Wood Wall Board Lab ID-Version‡: 20287172-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Wallboard) ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-ASP01-A, Black Asphalt Lab ID-Version‡: 20287173-1 Sample Layers Asbestos Content Black Asphalt ND Sample Composite Homogeneity: Poor Location: HQ-Heck-ASP01-B, Black Asphalt Lab ID-Version‡: 20287174-1 Sample Layers Asbestos Content Black Asphalt ND Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 110 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-ASP01-C, Black Asphalt Lab ID-Version‡: 20287175-1 Sample Layers Asbestos Content Black Asphalt ND Sample Composite Homogeneity: Poor Location: HQ-Heck-VB01-A, Black Roof Vapor Barrier Lab ID-Version‡: 20287176-1 Sample Layers Asbestos Content Black Vapor Barrier ND Composite Non-Asbestos Content: 5% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VB01-B, Black Roof Vapor Barrier Lab ID-Version‡: 20287177-1 Sample Layers Asbestos Content Black Vapor Barrier ND Composite Non-Asbestos Content: 5% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VB01-C, Black Roof Vapor Barrier Lab ID-Version‡: 20287178-1 Sample Layers Asbestos Content Black Vapor Barrier ND Composite Non-Asbestos Content: 5% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 111 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK10-A, White Painted Caulk Lab ID-Version‡: 20287179-1 Sample Layers Asbestos Content White Caulk ND Brown Wood ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK10-B, White Painted Caulk Lab ID-Version‡: 20287180-1 Sample Layers Asbestos Content White Caulk ND Brown Wood ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK10-C, White Painted Caulk Lab ID-Version‡: 20287181-1 Sample Layers Asbestos Content White Caulk ND Brown Wood ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-PS01-A, White Thick Penetrating Sealant Lab ID-Version‡: 20287182-1 Sample Layers Asbestos Content White Sealant ND Black Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 112 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PS01-B, White Thick Penetrating Sealant Lab ID-Version‡: 20287183-1 Sample Layers Asbestos Content White Sealant ND Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-PS01-C, White Thick Penetrating Sealant Lab ID-Version‡: 20287184-1 Sample Layers Asbestos Content White Sealant ND Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-RS01-A, Black Roofing System Lab ID-Version‡: 20287185-1 Sample Layers Asbestos Content Black Roofing Felt ND Composite Non-Asbestos Content: 5% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-RS01-B, Black Roofing System Lab ID-Version‡: 20287186-1 Sample Layers Asbestos Content Black Roofing Felt ND Composite Non-Asbestos Content: 5% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 113 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-RS01-C, Black Roofing System Lab ID-Version‡: 20287187-1 Sample Layers Asbestos Content Black Roofing Felt ND Composite Non-Asbestos Content: 5% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON08-A, Dark Grey Concrete Concrete Pad with Large Mineral Lab ID-Version‡: 20287188-1 Sample Layers Asbestos Content Dark Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CON08-B, Dark Grey Concrete Concrete Pad with Large Mineral Lab ID-Version‡: 20287189-1 Sample Layers Asbestos Content Dark Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CON08-C, Dark Grey Concrete Concrete Pad with Large Mineral Lab ID-Version‡: 20287190-1 Sample Layers Asbestos Content Dark Gray Concrete ND Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 114 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON09-A, Grey Concrete with Pink Paint and Very Large Mineral Lab ID-Version‡: 20287191-1 Sample Layers Asbestos Content Dark Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CON09-B, Grey Concrete with Pink Paint and Very Large Mineral Lab ID-Version‡: 20287192-1 Sample Layers Asbestos Content Dark Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CON09-C, Grey Concrete with Pink Paint and Very Large Mineral Lab ID-Version‡: 20287193-1 Sample Layers Asbestos Content Dark Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-PIW03-A, White 13" Pipe Insulation Lab ID-Version‡: 20287194-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 115 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW03-B, White 13" Pipe Insulation Lab ID-Version‡: 20287195-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW03-C, White 13" Pipe Insulation Lab ID-Version‡: 20287196-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW04-A, White 10" Pipe Insulation Lab ID-Version‡: 20287197-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 116 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW04-B, White 10" Pipe Insulation Lab ID-Version‡: 20287198-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 117 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW04-C, White 10" Pipe Insulation Lab ID-Version‡: 20287199-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW05-A, White 7" Pipe Insulation Lab ID-Version‡: 20287200-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW05-B, White 7" Pipe Insulation Lab ID-Version‡: 20287201-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 118 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW05-C, White 7" Pipe Insulation Lab ID-Version‡: 20287202-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 119 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW06-A, White 20" Pipe Insulation Lab ID-Version‡: 20287203-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW06-B, White 20" Pipe Insulation Lab ID-Version‡: 20287204-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW06-C, White 20" Pipe Insulation Lab ID-Version‡: 20287205-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 120 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW07-A, White 3" Pipe Insulation Lab ID-Version‡: 20287206-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 121 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW07-B, White 3" Pipe Insulation Lab ID-Version‡: 20287207-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW07-C, White 3" Pipe Insulation Lab ID-Version‡: 20287208-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW08-A, White 5" Pipe Insulation Lab ID-Version‡: 20287209-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 122 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW08-B, White 5" Pipe Insulation Lab ID-Version‡: 20287210-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 123 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW08-C, White 5" Pipe Insulation Lab ID-Version‡: 20287211-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW09-A, White 4" Pipe Insulation Lab ID-Version‡: 20287212-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW09-B, White 4" Pipe Insulation Lab ID-Version‡: 20287213-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 124 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW09-C, White 4" Pipe Insulation Lab ID-Version‡: 20287214-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 125 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-BI01-A, White Boiler Insulation Lab ID-Version‡: 20287215-1 Sample Layers Asbestos Content Cream Tape ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 5% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-BI01-B, White Boiler Insulation Lab ID-Version‡: 20287216-1 Sample Layers Asbestos Content Cream Tape ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 5% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-BI01-C, White Boiler Insulation Lab ID-Version‡: 20287217-1 Sample Layers Asbestos Content Cream Tape ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 5% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CMU01-A, White CMU Block Mortar Lab ID-Version‡: 20287218-1 Sample Layers Asbestos Content White Coating ND Gray Mortar ND Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 126 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CMU01-B, White CMU Block Mortar Lab ID-Version‡: 20287219-1 Sample Layers Asbestos Content White Coating ND Gray Mortar ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CMU01-C, White CMU Block Mortar Lab ID-Version‡: 20287220-1 Sample Layers Asbestos Content White Coating ND Gray Mortar ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CON10-A, Gray Concrete Floor Lab ID-Version‡: 20287221-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CON10-B, Gray Concrete Floor Lab ID-Version‡: 20287222-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 127 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON10-C, Gray Concrete Floor Lab ID-Version‡: 20287223-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-DW07-A, White Fine Grained Drywall Lab ID-Version‡: 20287224-1 Sample Layers Asbestos Content Off-White Joint Compound with Paint ND Cream Tape ND Off-White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 5% Cellulose 2% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW07-B, White Fine Grained Drywall Lab ID-Version‡: 20287225-1 Sample Layers Asbestos Content Off-White Joint Compound with Paint ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 5% Cellulose 2% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW07-C, White Fine Grained Drywall Lab ID-Version‡: 20287226-1 Sample Layers Asbestos Content Off-White Joint Compound with Paint ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 5% Cellulose 2% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 128 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CWT03-A, White Square Ceramic Wall Tile, White Grout Lab ID-Version‡: 20287227-1 Sample Layers Asbestos Content White Ceramic Tile ND White Grout ND White Adhesive ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT03-B, White Square Ceramic Wall Tile, White Grout Lab ID-Version‡: 20287228-1 Sample Layers Asbestos Content White Ceramic Tile ND White Grout ND White Adhesive ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT03-C, White Square Ceramic Wall Tile, White Grout Lab ID-Version‡: 20287229-1 Sample Layers Asbestos Content White Ceramic Tile ND White Grout ND White Adhesive ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF08-A, Cream Multicolor Splotchy Vinyl Sheet Flooring, Tan Mastic Lab ID-Version‡: 20287230-1 Sample Layers Asbestos Content Cream Sheet Flooring ND Yellow Adhesive ND Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 129 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF08-B, Cream Multicolor Splotchy Vinyl Sheet Flooring, Tan Mastic Lab ID-Version‡: 20287231-1 Sample Layers Asbestos Content Cream Sheet Flooring ND Yellow Adhesive ND Gray Leveling Compound ND Gray Concrete ND Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF08-C, Cream Multicolor Splotchy Vinyl Sheet Flooring, Tan Mastic Lab ID-Version‡: 20287232-1 Sample Layers Asbestos Content Cream Sheet Flooring ND Yellow Adhesive ND Gray Leveling Compound ND Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT04-A, Dark Green Square Ceramic Wall Tile, White Grout Lab ID-Version‡: 20287233-1 Sample Layers Asbestos Content Green Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT04-B, Dark Green Square Ceramic Wall Tile, White Grout Lab ID-Version‡: 20287234-1 Sample Layers Asbestos Content Green Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 130 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CWT04-C, Dark Green Square Ceramic Wall Tile, White Grout Lab ID-Version‡: 20287235-1 Sample Layers Asbestos Content Green Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT13-A, Gray with Canyon Color Streaks, Brown Mastic Lab ID-Version‡: 20287236-1 Sample Layers Asbestos Content Gray Floor Tile 3% Brown Mastic 4% Sample Composite Homogeneity: Good Location: HQ-Heck-VFT13-B, Gray with Canyon Color Streaks, Brown Mastic Lab ID-Version‡: 20287237-1 Sample Layers Asbestos Content Gray Floor Tile 3% Brown Mastic 4% Sample Composite Homogeneity: Good Location: HQ-Heck-VFT13-C, Gray with Canyon Color Streaks, Brown Mastic Lab ID-Version‡: 20287238-1 Sample Layers Asbestos Content Gray Floor Tile 3% Brown Mastic 4% Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 131 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-16-2025 ASBESTOS PLM REPORT PROJECT AND SIGNATORY REPORT Project The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of Analyst: Miguel Diaz Analyst: Jennifer Grenier Analyst: Danny Li Analyst: Philip Newton Analyst: Lynsey Ninh Analyst: Vicente Salazar EMLab ID: 4066845, Page 132 of 132 Eurofins Built Environment Testing West, LLC ---PAGE BREAK--- Approved by: Approved Signatory Danny Li Report for: Tetra Tech START/EPA Tetra Tech: START/EPA 3101 Zinfandel Dr. Bldg B, Ste 200 Rancho Cordova, CA 95670 Regarding: Eurofins Built Environment Testing West, LLC Project: 103X903523F0060241205; Heck and Quaw Elementary EML ID: 4066845 All samples were received in acceptable condition unless noted in the Report Comments portion in the body of the report. Due to the nature of the analyses performed, field blank correction of results is not applied. The results relate only to the samples as received and tested. Eurofins Built Environment Testing West, LLC ("the Company"), a member of the Eurofins Built Environment Testing group of companies, shall have no liability to the client or the client's customer with respect to decisions or recommendations made, actions taken or courses of conduct implemented by either the client or the client's customer as a result of or based upon the Test Results. In no event shall the Company be liable to the client with respect to the Test Results except for the Company's own willful misconduct or gross negligence nor shall the Company be liable for incidental or consequential damages or lost profits or revenues to the fullest extent such liability may be disclaimed by law, even if the Company has been advised of the possibility of such damages, lost profits or lost revenues. In no event shall the Company's liability with respect to the Test Results exceed the amount paid to the Company by the client therefor. Dates of Analysis: Asbestos-EPA 400 point count: 05-27-2025 Service SOPs: Asbestos-EPA 400 point count (EPA 40CFR App E to Sub E of Part 763 & EPA METHOD 600/R-93-116, SOP EB- AS-S-1262) NVLAP Lab Code 200757-0 EMLab ID: 4066845, Page 1 of 3 Eurofins Built Environment Testing West, LLC ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS POINT COUNT REPORT Location: HQ-Heck-CBM08-C Black 6" Cove Base with Beige Mastic Total Points Counted: 400 Lab ID-Version‡: 20382245-1 Sample Layers Asbestos Type Asbestos Points Counted Asbestos Concentration White Compound 1 0.25 Layer Totals: 1 0.25 Location: HQ-Heck-WB03-A Brown Painted Wooden/Plywood Wall Board Total Points Counted: 400 Lab ID-Version‡: 20353838-1 Sample Layers Asbestos Type Asbestos Points Counted Asbestos Concentration White Non-Fibrous Material (Walllbaord) 1 0.25 Layer Totals: 1 0.25 Location: HQ-Heck-WB03-C Brown Painted Wooden/Plywood Wall Board Total Points Counted: 400 Lab ID-Version‡: 20353839-1 Sample Layers Asbestos Type Asbestos Points Counted Asbestos Concentration White Non-Fibrous Material (Walllbaord) 0 < 0.25 Layer Totals: 0 NA Comments:Asbestos was detected, but no points counted. EMLab ID: 4066845, Page 2 of 3 Eurofins Built Environment Testing West, LLC The analytical sensitivity is 1 asbestos point. The limit of detection is 1 asbestos point divided by the total number of points counted and multiplied by 100. The results relate only to the items tested. Interpretation is left to the company and/or persons who conducted the field work. The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. All samples were received in acceptable condition unless otherwise noted. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS POINT COUNT REPORT PROJECT ANALYST AND SIGNATORY REPORT Project Analyst The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of Analyst: Philip Newton EMLab ID: 4066845, Page 3 of 3 Eurofins Built Environment Testing West, LLC ---PAGE BREAK--- Approved by: Technical Manager Danny Li Report for: Tetra Tech START/EPA Tetra Tech: START/EPA 3101 Zinfandel Dr. Bldg B, Ste 200 Rancho Cordova, CA 95670 Regarding: Eurofins Built Environment Testing West, LLC Project: 103X903523F0060241205; Heck and Quaw Elementary EML ID: 4066845 All samples were received in acceptable condition unless noted in the Report Comments portion in the body of the report. Due to the nature of the analyses performed, field blank correction of results is not applied. The results relate only to the samples as received and tested. Eurofins Built Environment Testing West, LLC ("the Company"), a member of the Eurofins Built Environment Testing group of companies, shall have no liability to the client or the client's customer with respect to decisions or recommendations made, actions taken or courses of conduct implemented by either the client or the client's customer as a result of or based upon the Test Results. In no event shall the Company be liable to the client with respect to the Test Results except for the Company's own willful misconduct or gross negligence nor shall the Company be liable for incidental or consequential damages or lost profits or revenues to the fullest extent such liability may be disclaimed by law, even if the Company has been advised of the possibility of such damages, lost profits or lost revenues. In no event shall the Company's liability with respect to the Test Results exceed the amount paid to the Company by the client therefor. Dates of Analysis: Asbestos-Gravimetric 400 Point Count: 05-27-2025 Service SOPs: Asbestos-Gravimetric 400 Point Count (EM-AS-S-1264) NVLAP Lab Code 200757-0 EMLab ID: 4066845, Page 1 of 3 Eurofins Built Environment Testing West, LLC ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS GRAVIMETRIC PT. COUNT REPORT Location: HQ-Heck-VFT01-A, White with speckles 12x12" Vinyl floor, brown mastic Sample Layer Asbestos Type Asbestos Points Counted Asbestos Concentration§ Black Mastic 0 < 0.0357% Layer Asbestos Totals: 0 < 0.0357% Total Points Counted: 400 Organic Component: 48.6043% Acid Soluble Component: 37.1100% Lab ID-Version‡: 20374767-1 Acid Insoluble Inorganic Component: 14.2857% Comments:Asbestos was detected, but no points counted. Location: HQ-Heck-CBM07-A, Brown 4" Cove Base with Brown Mastic Sample Layer Asbestos Type Asbestos Points Counted Asbestos Concentration§ Brown Mastic 0 < 0.1187% Layer Asbestos Totals: 0 < 0.1187% Total Points Counted: 400 Organic Component: 46.9958% Acid Soluble Component: 5.5426% Lab ID-Version‡: 20353826-1 Acid Insoluble Inorganic Component: 47.4616% Comments:Asbestos was detected, but no points counted. Location: HQ-Heck-CBM07-C, Brown 4" Cove Base with Brown Mastic Sample Layer Asbestos Type Asbestos Points Counted Asbestos Concentration§ Brown Mastic 0 < 0.0968% Layer Asbestos Totals: 0 < 0.0968% Total Points Counted: 400 Organic Component: 48.3680% Acid Soluble Component: 12.9080% Lab ID-Version‡: 20353827-1 Acid Insoluble Inorganic Component: 38.7240% Comments:Asbestos was detected, but no points counted. EMLab ID: 4066845, Page 2 of 3 Eurofins Built Environment Testing West, LLC §The analytical sensitivity is 1 asbestos point. The limit of detection is 1 asbestos point divided by the total number of points counted and then converted to percentage using the final residual weight of the sample. Each sample was separated into a representative subsample and analyzed individually. The subsample was ashed and dissolved in acid to achieve the final residual weight. The residual material was point counted following the quantitative guidelines in EPA Method 600/R-93/116. The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS GRAVIMETRIC PT. COUNT REPORT PROJECT ANALYST AND SIGNATORY REPORT Project Analyst The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of Analyst: Philip Newton EMLab ID: 4066845, Page 3 of 3 Eurofins Built Environment Testing West, LLC ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT APPENDIX D: ACM ANALYTICAL PACKAGE – IT BUILDING SAMPLES ---PAGE BREAK--- Approved by: Approved Signatory Danny Li Report for: Tetra Tech START/EPA Tetra Tech: START/EPA 3101 Zinfandel Dr. Bldg B, Ste 200 Rancho Cordova, CA 95670 Regarding: Eurofins Built Environment Testing West, LLC Project: 103X903523F0060241205; Heck and Quaw Elementary EML ID: 4066845 All samples were received in acceptable condition unless noted in the Report Comments portion in the body of the report. The results relate only to the samples as received and tested. The results include an inherent uncertainty of measurement associated with estimating percentages by polarized light microscopy. Measurement uncertainty data for sample results with asbestos concentration can be provided when requested. Eurofins Built Environment Testing West, LLC ("the Company"), a member of the Eurofins Built Environment Testing group of companies, shall have no liability to the client or the client's customer with respect to decisions or recommendations made, actions taken or courses of conduct implemented by either the client or the client's customer as a result of or based upon the Test Results. In no event shall the Company be liable to the client with respect to the Test Results except for the Company's own willful misconduct or gross negligence nor shall the Company be liable for incidental or consequential damages or lost profits or revenues to the fullest extent such liability may be disclaimed by law, even if the Company has been advised of the possibility of such damages, lost profits or lost revenues. In no event shall the Company's liability with respect to the Test Results exceed the amount paid to the Company by the client therefor. Dates of Analysis: Asbestos PLM: 05-13-2025 to 05-16-2025 Service SOPs: Asbestos PLM (EPA 40CFR App E to Sub E of Part 763 & EPA METHOD 600/R-93-116, SOP EB-AS-S-1267) NVLAP Lab Code 200757-0 EMLab ID: 4066845, Page 1 of 132 Eurofins Built Environment Testing West, LLC ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Total Samples Submitted: 472 Total Samples Analyzed: 472 Total Samples with Layer Asbestos Content > 44 Location: HQ-Heck_IT-CT01-A, White 2X4' cut unidirectional squiggle drop ceiling tiles Lab ID-Version‡: 20286767-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CT01-B, White 2X4' cut unidirectional squiggle drop ceiling tiles Lab ID-Version‡: 20286768-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CT01-C, White 2X4' cut unidirectional squiggle drop ceiling tiles Lab ID-Version‡: 20286769-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 2 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CT02-A, White 2X4' various depth cut multidirectional squiggle drop ceiling tiles Lab ID-Version‡: 20286770-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 3 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CT02-B, White 2X4' various depth cut multidirectional squiggle drop ceiling tiles Lab ID-Version‡: 20286771-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CT02-C, White 2X4' various depth cut multidirectional squiggle drop ceiling tiles Lab ID-Version‡: 20286772-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CT03-A, White 2X4' multidirectional squiggle drop ceiling Lab ID-Version‡: 20286773-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CT03-B, White 2X4' multidirectional squiggle drop ceiling Lab ID-Version‡: 20286774-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 4 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CT03-C, White 2X4' multidirectional squiggle drop ceiling Lab ID-Version‡: 20286775-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-DW01-A, Peach small grain drywall with white paper Lab ID-Version‡: 20286776-1 Sample Layers Asbestos Content Peach Drywall with Brown Paper ND White Joint Compound with Paint ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-DW01-B, Peach small grain drywall with white paper Lab ID-Version‡: 20286777-1 Sample Layers Asbestos Content Peach Drywall with Brown Paper ND White Joint Compound with Paint ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-DW01-C, Peach small grain drywall with white paper Lab ID-Version‡: 20286778-1 Sample Layers Asbestos Content Peach Drywall with Brown Paper ND White Joint Compound with Paint ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 5 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CPM01-A, Brown, tan , and green cross stich with brown mastic Lab ID-Version‡: 20286779-1 Sample Layers Asbestos Content White Mastic ND White Fibrous Material (Mesh) ND Multicolored Carpet ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM01-B, Brown, tan , and green cross stich with brown mastic Lab ID-Version‡: 20286780-1 Sample Layers Asbestos Content White Mastic ND White Fibrous Material (Mesh) ND Multicolored Carpet ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM01-C, Brown, tan , and green cross stich with brown mastic Lab ID-Version‡: 20286781-1 Sample Layers Asbestos Content White Mastic ND White Fibrous Material (Mesh) ND Multicolored Carpet ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 6 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CBM01-A, Brown 4" cove base with beige mastic Lab ID-Version‡: 20286782-1 Sample Layers Asbestos Content Dark Brown Baseboard ND Beige Mastic ND White Compound ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 7 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CBM01-B, Brown 4" cove base with beige mastic Lab ID-Version‡: 20286783-1 Sample Layers Asbestos Content Dark Brown Baseboard ND Beige Mastic ND White Compound ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CBM01-C, Brown 4" cove base with beige mastic Lab ID-Version‡: 20286784-1 Sample Layers Asbestos Content Dark Brown Baseboard ND Beige Mastic ND White Compound ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CT04-A, White 12x12" ceiling tiles Lab ID-Version‡: 20286785-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CT04-B, White 12x12" ceiling tiles Lab ID-Version‡: 20286786-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 8 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CT04-C, White 12x12" ceiling tiles Lab ID-Version‡: 20286787-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WB01-A, Brown wooden wall board painted white Lab ID-Version‡: 20286788-1 Sample Layers Asbestos Content Beige Wood Wall Board with Paint ND Composite Non-Asbestos Content: 95% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WB01-B, Brown wooden wall board painted white Lab ID-Version‡: 20286789-1 Sample Layers Asbestos Content Beige Wood Wall Board with Paint ND Composite Non-Asbestos Content: 95% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WB01-C, Brown wooden wall board painted white Lab ID-Version‡: 20286790-1 Sample Layers Asbestos Content Beige Wood Wall Board with Paint ND Composite Non-Asbestos Content: 95% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 9 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-INS01-A, White insulation brown paper Lab ID-Version‡: 20286791-1 Sample Layers Asbestos Content White Insulation ND Brown/Black Paper ND Composite Non-Asbestos Content: 80% Glass Fibers 15% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-INS01-B, White insulation brown paper Lab ID-Version‡: 20286792-1 Sample Layers Asbestos Content White Insulation ND Brown/Black Paper ND Composite Non-Asbestos Content: 80% Glass Fibers 15% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-INS01-C, White insulation brown paper Lab ID-Version‡: 20286793-1 Sample Layers Asbestos Content White Insulation ND Brown/Black Paper ND Composite Non-Asbestos Content: 80% Glass Fibers 15% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-PS01-A, Orange brown penetrating sealant Lab ID-Version‡: 20286794-1 Sample Layers Asbestos Content White Sealant ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 10 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-PS01-B, Orange brown penetrating sealant Lab ID-Version‡: 20286795-1 Sample Layers Asbestos Content White Sealant ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-PS01-C, Orange brown penetrating sealant Lab ID-Version‡: 20286796-1 Sample Layers Asbestos Content White Sealant ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WB02-A, Beige and tan 2x2" square tile pattern Lab ID-Version‡: 20286797-1 Sample Layers Asbestos Content Brown/White Fibrous Material Wall Board ND Composite Non-Asbestos Content: 85% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WB02-B, Beige and tan 2x2" square tile pattern Lab ID-Version‡: 20286798-1 Sample Layers Asbestos Content Brown/White Fibrous Material Wall Board ND Composite Non-Asbestos Content: 85% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 11 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-WB02-C, Beige and tan 2x2" square tile pattern Lab ID-Version‡: 20286799-1 Sample Layers Asbestos Content Brown/White Fibrous Material Wall Board ND Composite Non-Asbestos Content: 85% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CON01-A, Grey smooth concrete blocks Lab ID-Version‡: 20286800-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CON01-B, Grey smooth concrete blocks Lab ID-Version‡: 20286801-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CON01-C, Grey smooth concrete blocks Lab ID-Version‡: 20286802-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 12 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-WM01-A, Brown cementous wall mastic on CON01 Lab ID-Version‡: 20286803-1 Sample Layers Asbestos Content Brown/Gray Mastic ND Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WM01-B, Brown cementous wall mastic on CON01 Lab ID-Version‡: 20286804-1 Sample Layers Asbestos Content Brown/Gray Mastic ND Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WM01-C, Brown cementous wall mastic on CON01 Lab ID-Version‡: 20286805-1 Sample Layers Asbestos Content Brown/Gray Mastic ND Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM02-A, Green shag carpet w/o mastic Lab ID-Version‡: 20286806-1 Sample Layers Asbestos Content Green Carpet ND Yellow Non-Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 13 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CPM02-B, Green shag carpet w/o mastic Lab ID-Version‡: 20286807-1 Sample Layers Asbestos Content Green Carpet ND Yellow Non-Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM02-C, Green shag carpet w/o mastic Lab ID-Version‡: 20286808-1 Sample Layers Asbestos Content Green Carpet ND Yellow Non-Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM03-A, Light green multicolor w/o mastic Lab ID-Version‡: 20286809-1 Sample Layers Asbestos Content Green Carpet ND Gray Foam Backing ND White Non-Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM03-B, Light green multicolor w/o mastic Lab ID-Version‡: 20286810-1 Sample Layers Asbestos Content Green Carpet ND Gray Foam Backing ND White Non-Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 14 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CPM03-C, Light green multicolor w/o mastic Lab ID-Version‡: 20286811-1 Sample Layers Asbestos Content Green Carpet ND Gray Foam Backing ND White Non-Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VCM01-A, Marble pattern countertop with beige mastic Lab ID-Version‡: 20286812-1 Sample Layers Asbestos Content Yellow Mastic ND Gray Countertop ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VCM01-B, Marble pattern countertop with beige mastic Lab ID-Version‡: 20286813-1 Sample Layers Asbestos Content Gray Countertop ND Yellow Mastic ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VCM01-C, Marble pattern countertop with beige mastic Lab ID-Version‡: 20286814-1 Sample Layers Asbestos Content Gray Countertop ND Yellow Mastic ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 15 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-VFP01-A, Brown grain vinyl floor panel, brown mastic Lab ID-Version‡: 20286815-1 Sample Layers Asbestos Content Brown Flooring ND Yellow Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VFP01-B, Brown grain vinyl floor panel, brown mastic Lab ID-Version‡: 20286816-1 Sample Layers Asbestos Content Brown Flooring ND Yellow Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VFP01-C, Brown grain vinyl floor panel, brown mastic Lab ID-Version‡: 20286817-1 Sample Layers Asbestos Content Brown Flooring ND Yellow Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VSF01-A, Brown marble swirl pattern vinyl sheet flooring with tan mastic Lab ID-Version‡: 20286818-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Cream Mastic ND Gray Leveling Compound ND Brown Wood ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 16 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-VSF01-B, Brown marble swirl pattern vinyl sheet flooring with tan mastic Lab ID-Version‡: 20286819-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Cream Mastic ND Gray Leveling Compound ND Brown Wood ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-VSF01-C, Brown marble swirl pattern vinyl sheet flooring with tan mastic Lab ID-Version‡: 20286820-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Cream Mastic ND Gray Leveling Compound ND Brown Wood ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CPM04-A, Blue carpet brown mastic Lab ID-Version‡: 20286821-1 Sample Layers Asbestos Content Gray Carpet ND White Fibrous Material (Mesh) ND Yellow Mastic ND Composite Non-Asbestos Content: 80% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 17 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CPM04-B, Blue carpet brown mastic Lab ID-Version‡: 20286822-1 Sample Layers Asbestos Content Yellow Mastic ND Gray Carpet ND White Fibrous Material (Mesh) ND Composite Non-Asbestos Content: 80% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 18 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CPM04-C, Blue carpet brown mastic Lab ID-Version‡: 20286823-1 Sample Layers Asbestos Content Gray Carpet ND White Fibrous Material (Mesh) ND Yellow Mastic ND Composite Non-Asbestos Content: 80% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-INS02-A, Yellow block insulation no paper Lab ID-Version‡: 20286824-1 Sample Layers Asbestos Content Yellow Insulation ND Composite Non-Asbestos Content: 95% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-INS02-B, Yellow block insulation no paper Lab ID-Version‡: 20286825-1 Sample Layers Asbestos Content Yellow Insulation ND Composite Non-Asbestos Content: 95% Glass Fibers Sample Composite Homogeneity: Good Location: HQ-Heck_IT-INS02-C, Yellow block insulation no paper Lab ID-Version‡: 20286826-1 Sample Layers Asbestos Content Yellow Insulation ND Composite Non-Asbestos Content: 95% Glass Fibers Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 19 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-INS03-A, Pink fiberglass insulation with silver paper Lab ID-Version‡: 20286827-1 Sample Layers Asbestos Content Brown/Black Paper ND Pink Insulation ND Silver Tape ND Composite Non-Asbestos Content: 80% Glass Fibers 10% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck_IT-INS03-B, Pink fiberglass insulation with silver paper Lab ID-Version‡: 20286828-1 Sample Layers Asbestos Content Silver Tape ND Brown/Black Paper ND Pink Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 10% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck_IT-INS03-C, Pink fiberglass insulation with silver paper Lab ID-Version‡: 20286829-1 Sample Layers Asbestos Content Silver Tape ND Brown/Black Paper ND Pink Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 10% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck_IT-BIN01-A, Brown blown-in insulation Lab ID-Version‡: 20286830-1 Sample Layers Asbestos Content Brown/White Insulation ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 20 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-BIN01-B, Brown blown-in insulation Lab ID-Version‡: 20286831-1 Sample Layers Asbestos Content Brown/White Insulation ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-BIN01-C, Brown blown-in insulation Lab ID-Version‡: 20286832-1 Sample Layers Asbestos Content Brown/White Insulation ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WTX01-A, White orangne peel wall texture over drywall Lab ID-Version‡: 20286833-1 Sample Layers Asbestos Content White Texture ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WTX01-B, White orangne peel wall texture over drywall Lab ID-Version‡: 20286834-1 Sample Layers Asbestos Content White Texture ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 21 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-WTX01-C, White orangne peel wall texture over drywall Lab ID-Version‡: 20286835-1 Sample Layers Asbestos Content White Texture ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WTX01-D, White orangne peel wall texture over drywall Lab ID-Version‡: 20286836-1 Sample Layers Asbestos Content White Texture ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-WTX01-E, White orangne peel wall texture over drywall Lab ID-Version‡: 20286837-1 Sample Layers Asbestos Content White Texture ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CON02-A, Gray concrete with large pebbles Lab ID-Version‡: 20286838-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 22 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CON02-B, Gray concrete with large pebbles Lab ID-Version‡: 20286839-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CON02-C, Gray concrete with large pebbles Lab ID-Version‡: 20286840-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CON03-A, Gray grainy concrete Lab ID-Version‡: 20286841-1 Sample Layers Asbestos Content Green Paint 2% Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CON03-B, Gray grainy concrete Lab ID-Version‡: 20286842-1 Sample Layers Asbestos Content Green Paint 2% Gray Concrete ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 23 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CON03-C, Gray grainy concrete Lab ID-Version‡: 20286843-1 Sample Layers Asbestos Content Green Paint 2% Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-SD01-A, Brown grey particle board siding, painted white Lab ID-Version‡: 20286844-1 Sample Layers Asbestos Content White Non-Fibrous Material ND Gray Semi-Fibrous Material Particle Board ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-SD01-B, Brown grey particle board siding, painted white Lab ID-Version‡: 20286845-1 Sample Layers Asbestos Content White Non-Fibrous Material ND Gray Semi-Fibrous Material Particle Board ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-SD01-C, Brown grey particle board siding, painted white Lab ID-Version‡: 20286846-1 Sample Layers Asbestos Content White Non-Fibrous Material ND Gray Semi-Fibrous Material Particle Board ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 24 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-FP01-A, White styrofoam foundation padding Lab ID-Version‡: 20286847-1 Sample Layers Asbestos Content White Foam ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-FP01-B, White styrofoam foundation padding Lab ID-Version‡: 20286848-1 Sample Layers Asbestos Content White Foam ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-FP01-C, White styrofoam foundation padding Lab ID-Version‡: 20286849-1 Sample Layers Asbestos Content White Foam ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CON04-A, Tan concrete pads Lab ID-Version‡: 20286850-1 Sample Layers Asbestos Content Tan Concrete ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 25 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CON04-B, Tan concrete pads Lab ID-Version‡: 20286851-1 Sample Layers Asbestos Content Tan Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck_IT-CON04-C, Tan concrete pads Lab ID-Version‡: 20286852-1 Sample Layers Asbestos Content Tan Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck_IT-RS01-A, Grey roofing system with shingles Lab ID-Version‡: 20286853-1 Sample Layers Asbestos Content Black Roofing Shingle with Pebbles 1 ND Black Roofing Shingle with Pebbles 2 ND Composite Non-Asbestos Content: 10% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-RS01-B, Grey roofing system with shingles Lab ID-Version‡: 20286854-1 Sample Layers Asbestos Content Black Roofing Tar and Felt ND Black Roofing Shingle with Pebbles 1 ND Black Roofing Shingle with Pebbles 2 ND Composite Non-Asbestos Content: 10% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 26 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-RS01-C, Grey roofing system with shingles Lab ID-Version‡: 20286855-1 Sample Layers Asbestos Content Black Roofing Shingle with Pebbles 1 ND Black Roofing Shingle with Pebbles 2 ND Black Roofing Tar and Felt ND Composite Non-Asbestos Content: 10% Glass Fibers 5% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-ASP01-A, Black asphalt Lab ID-Version‡: 20286856-1 Sample Layers Asbestos Content Black Asphalt ND Sample Composite Homogeneity: Good Location: HQ-Heck_IT-ASP01-B, Black asphalt Lab ID-Version‡: 20286857-1 Sample Layers Asbestos Content Black Asphalt ND Sample Composite Homogeneity: Good Location: HQ-Heck_IT-ASP01-C, Black asphalt Lab ID-Version‡: 20286858-1 Sample Layers Asbestos Content Black Asphalt ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 27 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CT05-A, White particle board ceiling tiles Lab ID-Version‡: 20286859-1 Sample Layers Asbestos Content Gray Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CT05-B, White particle board ceiling tiles Lab ID-Version‡: 20286860-1 Sample Layers Asbestos Content Gray Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CT05-C, White particle board ceiling tiles Lab ID-Version‡: 20286861-1 Sample Layers Asbestos Content Gray Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 40% Cellulose 35% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CFT01-A, Cream square ceramic tiles around stove Lab ID-Version‡: 20286862-1 Sample Layers Asbestos Content Tan Ceramic Tile ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 28 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck_IT-CFT01-B, Cream square ceramic tiles around stove Lab ID-Version‡: 20286863-1 Sample Layers Asbestos Content Tan Ceramic Tile ND Sample Composite Homogeneity: Moderate Location: HQ-Heck_IT-CFT01-C, Cream square ceramic tiles around stove Lab ID-Version‡: 20286864-1 Sample Layers Asbestos Content Tan Ceramic Tile ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON01-A, Grey 6x12" CMU blocks with grey grout Lab ID-Version‡: 20286865-1 Sample Layers Asbestos Content Gray Concrete with Paint ND Gray Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON01-B, Grey 6x12" CMU blocks with grey grout Lab ID-Version‡: 20286866-1 Sample Layers Asbestos Content Gray Concrete with Paint ND Gray Grout ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 29 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON01-C, Grey 6x12" CMU blocks with grey grout Lab ID-Version‡: 20286867-1 Sample Layers Asbestos Content Gray Concrete with Paint ND Gray Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT01-A, White with speckles 12x12" Vinyl floor, brown mastic Lab ID-Version‡: 20286868-1 Sample Layers Asbestos Content White Floor Tile ND Black Mastic < 1% Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT01-B, White with speckles 12x12" Vinyl floor, brown mastic Lab ID-Version‡: 20286869-1 Sample Layers Asbestos Content White Floor Tile ND Yellow Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT01-C, White with speckles 12x12" Vinyl floor, brown mastic Lab ID-Version‡: 20286870-1 Sample Layers Asbestos Content White Floor Tile ND Black Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 30 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-WT01-A, White with unidirectional squiggles and dots 9x9" wall tiles Lab ID-Version‡: 20286871-1 Sample Layers Asbestos Content Brown Ceiling Tile with White Surface ND Brown Mastic ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WT01-B, White with unidirectional squiggles and dots 9x9" wall tiles Lab ID-Version‡: 20286872-1 Sample Layers Asbestos Content Brown Ceiling Tile with White Surface ND Brown Mastic ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WT01-C, White with unidirectional squiggles and dots 9x9" wall tiles Lab ID-Version‡: 20286873-1 Sample Layers Asbestos Content Brown Ceiling Tile with White Surface ND Brown Mastic ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WP01-A, White bumpy wall panels Lab ID-Version‡: 20286874-1 Sample Layers Asbestos Content White Fiberglass Reinforced Plastic ND Composite Non-Asbestos Content: 50% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 31 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-WP01-B, White bumpy wall panels Lab ID-Version‡: 20286875-1 Sample Layers Asbestos Content White Fiberglass Reinforced Plastic ND Composite Non-Asbestos Content: 50% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-WP01-C, White bumpy wall panels Lab ID-Version‡: 20286876-1 Sample Layers Asbestos Content White Fiberglass Reinforced Plastic ND Composite Non-Asbestos Content: 50% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK01-A, Tan semi-malleable caulk Lab ID-Version‡: 20286877-1 Sample Layers Asbestos Content Gray Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK01-B, Tan semi-malleable caulk Lab ID-Version‡: 20286878-1 Sample Layers Asbestos Content Gray Caulk ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 32 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK01-C, Tan semi-malleable caulk Lab ID-Version‡: 20286879-1 Sample Layers Asbestos Content Gray Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CT01-A, White 2x2' holey ceiling tiles Lab ID-Version‡: 20286880-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT01-B, White 2x2' holey ceiling tiles Lab ID-Version‡: 20286881-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT01-C, White 2x2' holey ceiling tiles Lab ID-Version‡: 20286882-1 Sample Layers Asbestos Content White Ceiling Tile ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 33 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CBM01-A, Brown 4" cove base with brown and beige mastic Lab ID-Version‡: 20286883-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM01-B, Brown 4" cove base with brown and beige mastic Lab ID-Version‡: 20286884-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM01-C, Brown 4" cove base with brown and beige mastic Lab ID-Version‡: 20286885-1 Sample Layers Asbestos Content Beige Mastic ND Brown Baseboard ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF01-A, Smooth multicolor sheet flooring, beige mastic Lab ID-Version‡: 20286886-1 Sample Layers Asbestos Content Multicolored Sheet Flooring ND Beige Mastic ND Black Mastic (Trace) < 1% Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 34 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF01-B, Smooth multicolor sheet flooring, beige mastic Lab ID-Version‡: 20286887-1 Sample Layers Asbestos Content Multicolored Sheet Flooring ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF01-C, Smooth multicolor sheet flooring, beige mastic Lab ID-Version‡: 20286888-1 Sample Layers Asbestos Content Multicolored Sheet Flooring ND Beige Mastic ND Black Mastic (Trace) ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM01-A, White with Brown Dots Vinyl Countertop with Beige Mastic Lab ID-Version‡: 20286889-1 Sample Layers Asbestos Content White Countertop ND Beige Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM01-B, White with Brown Dots Vinyl Countertop with Beige Mastic Lab ID-Version‡: 20286890-1 Sample Layers Asbestos Content White Countertop ND Beige Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 35 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VCM01-C, White with Brown Dots Vinyl Countertop with Beige Mastic Lab ID-Version‡: 20286891-1 Sample Layers Asbestos Content White Countertop ND Beige Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM02-A, Brown 6" Cove Base with Tan Mastic Lab ID-Version‡: 20286892-1 Sample Layers Asbestos Content Brown Baseboard ND Tan Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM02-B, Brown 6" Cove Base with Tan Mastic Lab ID-Version‡: 20286893-1 Sample Layers Asbestos Content Brown Baseboard ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM02-C, Brown 6" Cove Base with Tan Mastic Lab ID-Version‡: 20286894-1 Sample Layers Asbestos Content Tan Mastic ND Brown Baseboard ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 36 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-DW01-A, Peach Small-Grain Drywall Lab ID-Version‡: 20286895-1 Sample Layers Asbestos Content Off-White Joint Compound 2% White Drywall with Brown/Green Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines. Location: HQ-Heck-DW01-B, Peach Small-Grain Drywall Lab ID-Version‡: 20286896-1 Sample Layers Asbestos Content Off-White Joint Compound 2% White Drywall with Brown/Green Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines. Location: HQ-Heck-DW01-C, Peach Small-Grain Drywall Lab ID-Version‡: 20286897-1 Sample Layers Asbestos Content White Drywall with Brown/Green Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor Location: HQ-Heck-CK02-A, Grey Beige White Hard Caulk Lab ID-Version‡: 20286898-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 37 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK02-B, Grey Beige White Hard Caulk Lab ID-Version‡: 20286899-1 Sample Layers Asbestos Content White Caulk ND Light Gray Caulk ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK02-C, Grey Beige White Hard Caulk Lab ID-Version‡: 20286900-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-SU01-A, Lavender Sink Undercoat Lab ID-Version‡: 20286901-1 Sample Layers Asbestos Content Purple Sink Undercoating 3% Sample Composite Homogeneity: Good Location: HQ-Heck-SU01-B, Lavender Sink Undercoat Lab ID-Version‡: 20286902-1 Sample Layers Asbestos Content Purple Sink Undercoating 3% Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 38 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-SU01-C, Lavender Sink Undercoat Lab ID-Version‡: 20286903-1 Sample Layers Asbestos Content Purple Sink Undercoating 3% Sample Composite Homogeneity: Good Location: HQ-Heck-CT02-A, White 2x4' Unidirectional Squiggles Ceiling Tile Lab ID-Version‡: 20286904-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 50% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT02-B, White 2x4' Unidirectional Squiggles Ceiling Tile Lab ID-Version‡: 20286905-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT02-C, White 2x4' Unidirectional Squiggles Ceiling Tile Lab ID-Version‡: 20286906-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 39 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CT03-A, White 2x4' Multidirectional Squiggles Ceiling Tile Lab ID-Version‡: 20286907-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 50% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT03-B, White 2x4' Multidirectional Squiggles Ceiling Tile Lab ID-Version‡: 20286908-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 50% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT03-C, White 2x4' Multidirectional Squiggles Ceiling Tile Lab ID-Version‡: 20286909-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM01-A, Green Carpet Pad with Dark Stripes Tan Mastic Lab ID-Version‡: 20286910-1 Sample Layers Asbestos Content Green Carpet ND Tan Mastic ND Gray Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 40 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM01-B, Green Carpet Pad with Dark Stripes Tan Mastic Lab ID-Version‡: 20286911-1 Sample Layers Asbestos Content Green Carpet ND Tan Mastic ND Gray Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM01-C, Green Carpet Pad with Dark Stripes Tan Mastic Lab ID-Version‡: 20286912-1 Sample Layers Asbestos Content Green Carpet ND Tan Mastic ND Gray Fibrous Material ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM02-A, Green Carpet, Tan Mastic Lab ID-Version‡: 20286913-1 Sample Layers Asbestos Content Green Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM02-B, Green Carpet, Tan Mastic Lab ID-Version‡: 20286914-1 Sample Layers Asbestos Content Green Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 41 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM02-C, Green Carpet, Tan Mastic Lab ID-Version‡: 20286915-1 Sample Layers Asbestos Content Green Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CT04-A, White 9x9" Multidirectional Squiggle and Dot Ceiling Tile Lab ID-Version‡: 20286916-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT04-B, White 9x9" Multidirectional Squiggle and Dot Ceiling Tile Lab ID-Version‡: 20286917-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT04-C, White 9x9" Multidirectional Squiggle and Dot Ceiling Tile Lab ID-Version‡: 20286918-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 42 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-DW02-A, White Fine Grained Dry Wall Lab ID-Version‡: 20286919-1 Sample Layers Asbestos Content White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW02-B, White Fine Grained Dry Wall Lab ID-Version‡: 20286920-1 Sample Layers Asbestos Content White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW02-C, White Fine Grained Dry Wall Lab ID-Version‡: 20286921-1 Sample Layers Asbestos Content White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-FT01-A, Green Rectangular Cement Floor Tiles with White Grout Lab ID-Version‡: 20286922-1 Sample Layers Asbestos Content Green Tile ND Gray Grout ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 43 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-FT01-B, Green Rectangular Cement Floor Tiles with White Grout Lab ID-Version‡: 20286923-1 Sample Layers Asbestos Content Green Tile ND Gray Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-FT01-C, Green Rectangular Cement Floor Tiles with White Grout Lab ID-Version‡: 20286924-1 Sample Layers Asbestos Content Green Tile ND Gray Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM03-A, Grey 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286925-1 Sample Layers Asbestos Content Gray Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM03-B, Grey 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286926-1 Sample Layers Asbestos Content Gray Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 44 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CBM03-C, Grey 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286927-1 Sample Layers Asbestos Content Gray Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-SHG01-A, Wooden Shingles Lab ID-Version‡: 20286928-1 Sample Layers Asbestos Content Brown Wood Shingle ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-SHG01-B, Wooden Shingles Lab ID-Version‡: 20286929-1 Sample Layers Asbestos Content Brown Wood Shingle ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-SHG01-C, Wooden Shingles Lab ID-Version‡: 20286930-1 Sample Layers Asbestos Content Brown Wood Shingle ND Composite Non-Asbestos Content: 90% Cellulose Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 45 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT02-A, Grey Beige 9x9" Vinyl Floor Tiles, Black Mastic Lab ID-Version‡: 20286931-1 Sample Layers Asbestos Content Brown Floor Tile 5% Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT02-B, Grey Beige 9x9" Vinyl Floor Tiles, Black Mastic Lab ID-Version‡: 20286932-1 Sample Layers Asbestos Content Brown Floor Tile 5% Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT02-C, Grey Beige 9x9" Vinyl Floor Tiles, Black Mastic Lab ID-Version‡: 20286933-1 Sample Layers Asbestos Content Brown Floor Tile 5% Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON02-A, Grey Smooth Concrete Pad Lab ID-Version‡: 20286934-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 46 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON02-B, Grey Smooth Concrete Pad Lab ID-Version‡: 20286935-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON02-C, Grey Smooth Concrete Pad Lab ID-Version‡: 20286936-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON03-A, Grey Pebble Concrete Lab ID-Version‡: 20286937-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON03-B, Grey Pebble Concrete Lab ID-Version‡: 20286938-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 47 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON03-C, Grey Pebble Concrete Lab ID-Version‡: 20286939-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON04-A, Grey Rectangular Concrete Blocks Lab ID-Version‡: 20286940-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON04-B, Grey Rectangular Concrete Blocks Lab ID-Version‡: 20286941-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON04-C, Grey Rectangular Concrete Blocks Lab ID-Version‡: 20286942-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 48 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW01-A, White Pipe Insulation Wrap with Yellow Insulation Along 2" Pipe Runs Lab ID-Version‡: 20286943-1 Sample Layers Asbestos Content Silver Foil ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 7% Cellulose Sample Composite Homogeneity: Poor Location: HQ-Heck-PIW01-B, White Pipe Insulation Wrap with Yellow Insulation Along 2" Pipe Runs Lab ID-Version‡: 20286944-1 Sample Layers Asbestos Content Silver Foil ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 7% Cellulose Sample Composite Homogeneity: Poor Location: HQ-Heck-PIW01-C, White Pipe Insulation Wrap with Yellow Insulation Along 2" Pipe Runs Lab ID-Version‡: 20286945-1 Sample Layers Asbestos Content Silver Foil ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 7% Cellulose Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 49 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW02-A, White Pipe Insulation Wrap with Yellow Insulation Along 4" Pipe Runs Lab ID-Version‡: 20286946-1 Sample Layers Asbestos Content Silver Foil ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 7% Cellulose Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 50 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW02-B, White Pipe Insulation Wrap with Yellow Insulation Along 4" Pipe Runs Lab ID-Version‡: 20286947-1 Sample Layers Asbestos Content Silver Foil ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 7% Cellulose Sample Composite Homogeneity: Poor Location: HQ-Heck-PIW02-C, White Pipe Insulation Wrap with Yellow Insulation Along 4" Pipe Runs Lab ID-Version‡: 20286948-1 Sample Layers Asbestos Content Silver Foil ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 80% Glass Fibers 7% Cellulose Sample Composite Homogeneity: Poor Location: HQ-Heck-PL01-A, Grey Medium Grain Plaster with Pink Speckles Lab ID-Version‡: 20286949-1 Sample Layers Asbestos Content Gray Plaster ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-PL01-B, Grey Medium Grain Plaster with Pink Speckles Lab ID-Version‡: 20286950-1 Sample Layers Asbestos Content Gray Plaster ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 51 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PL01-C, Grey Medium Grain Plaster with Pink Speckles Lab ID-Version‡: 20286951-1 Sample Layers Asbestos Content Gray Plaster ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-PL01-D, Grey Medium Grain Plaster with Pink Speckles Lab ID-Version‡: 20286952-1 Sample Layers Asbestos Content Gray Plaster ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-PL01-E, Grey Medium Grain Plaster with Pink Speckles Lab ID-Version‡: 20286953-1 Sample Layers Asbestos Content Gray Plaster ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-INS01-A, Orange Foam Spray Insulation Lab ID-Version‡: 20286954-1 Sample Layers Asbestos Content Orange Foam ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 52 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-INS01-B, Orange Foam Spray Insulation Lab ID-Version‡: 20286955-1 Sample Layers Asbestos Content Orange Foam ND Sample Composite Homogeneity: Good Location: HQ-Heck-INS01-C, Orange Foam Spray Insulation Lab ID-Version‡: 20286956-1 Sample Layers Asbestos Content Orange Foam ND Sample Composite Homogeneity: Good Location: HQ-Heck-VFT03-A, White 12x12" Vinyl Floor Tiles with Brown and Grey Splotches, Brown Mastic Lab ID-Version‡: 20286957-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT03-B, White 12x12" Vinyl Floor Tiles with Brown and Grey Splotches, Brown Mastic Lab ID-Version‡: 20286958-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 53 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT03-C, White 12x12" Vinyl Floor Tiles with Brown and Grey Splotches, Brown Mastic Lab ID-Version‡: 20286959-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT04-A, White 12x12" Vinyl Floor Tiles with Brown and Grey Splotches, Brown Mastic Lab ID-Version‡: 20286960-1 Sample Layers Asbestos Content Green Floor Tile ND Black Mastic 5% Gray Leveling Compound ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT04-B, White 12x12" Vinyl Floor Tiles with Brown and Grey Splotches, Brown Mastic Lab ID-Version‡: 20286961-1 Sample Layers Asbestos Content Green Floor Tile ND Brown Mastic ND Gray Leveling Compound ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 54 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT04-C, White 12x12" Vinyl Floor Tiles with Brown and Grey Splotches, Brown Mastic Lab ID-Version‡: 20286962-1 Sample Layers Asbestos Content Green Floor Tile ND Brown Mastic ND Gray Leveling Compound ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 55 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CWT01-A, Tan 6x6" Ceramic Wall Tiles with White Grout Lab ID-Version‡: 20286963-1 Sample Layers Asbestos Content Tan Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT01-B, Tan 6x6" Ceramic Wall Tiles with White Grout Lab ID-Version‡: 20286964-1 Sample Layers Asbestos Content Tan Ceramic Tile ND Gray Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT01-C, Tan 6x6" Ceramic Wall Tiles with White Grout Lab ID-Version‡: 20286965-1 Sample Layers Asbestos Content Tan Ceramic Tile ND Gray Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW03-A, Grey Grainy Drywall Lab ID-Version‡: 20286966-1 Sample Layers Asbestos Content White Joint Compound 1 ND Cream Tape ND White Joint Compound 2 ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 56 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-DW03-B, Grey Grainy Drywall Lab ID-Version‡: 20286967-1 Sample Layers Asbestos Content White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor Location: HQ-Heck-DW03-C, Grey Grainy Drywall Lab ID-Version‡: 20286968-1 Sample Layers Asbestos Content Off-White Joint Compound 2% White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Poor Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines. Location: HQ-Heck-CPM03-A, Blue with Pink and White Speckled Carpet, Brown Mastic Lab ID-Version‡: 20286969-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Gray Cementitious Material ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM03-B, Blue with Pink and White Speckled Carpet, Brown Mastic Lab ID-Version‡: 20286970-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Brown Floor Tile 5% Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 57 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM03-C, Blue with Pink and White Speckled Carpet, Brown Mastic Lab ID-Version‡: 20286971-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Black Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM04-A, Dark Blue Carpet with Light Blue Stitching, Brown Mastic Lab ID-Version‡: 20286972-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Gray Cementitious Material ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM04-B, Dark Blue Carpet with Light Blue Stitching, Brown Mastic Lab ID-Version‡: 20286973-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 58 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM04-C, Dark Blue Carpet with Light Blue Stitching, Brown Mastic Lab ID-Version‡: 20286974-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Black Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 59 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM05-A, Brown and Beige Splotched Carpet Squares, 2x2', Brown Mastic Lab ID-Version‡: 20286975-1 Sample Layers Asbestos Content Blue Carpet ND Black/Yellow Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM05-B, Brown and Beige Splotched Carpet Squares, 2x2', Brown Mastic Lab ID-Version‡: 20286976-1 Sample Layers Asbestos Content Blue Carpet ND Brown Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM05-C, Brown and Beige Splotched Carpet Squares, 2x2', Brown Mastic Lab ID-Version‡: 20286977-1 Sample Layers Asbestos Content Blue Carpet ND Yellow Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CK03-A, White Brittle Caulk Around Window Frames Lab ID-Version‡: 20286978-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 60 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK03-B, White Brittle Caulk Around Window Frames Lab ID-Version‡: 20286979-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK03-C, White Brittle Caulk Around Window Frames Lab ID-Version‡: 20286980-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-VCM02-A, Beige and Tan Marble Detail Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20286981-1 Sample Layers Asbestos Content Beige Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 70% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM02-B, Beige and Tan Marble Detail Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20286982-1 Sample Layers Asbestos Content Beige Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 70% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 61 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VCM02-C, Beige and Tan Marble Detail Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20286983-1 Sample Layers Asbestos Content Beige Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 70% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM04-A, Black 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286984-1 Sample Layers Asbestos Content Black Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Good Location: HQ-Heck-CBM04-B, Black 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286985-1 Sample Layers Asbestos Content Beige Mastic ND Brown Mastic ND Black Baseboard ND Sample Composite Homogeneity: Good Location: HQ-Heck-CBM04-C, Black 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286986-1 Sample Layers Asbestos Content Black Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 62 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-SU02-A, Grey Sink Undercoat Lab ID-Version‡: 20286987-1 Sample Layers Asbestos Content Gray Sink Undercoating ND Sample Composite Homogeneity: Good Location: HQ-Heck-SU02-B, Grey Sink Undercoat Lab ID-Version‡: 20286988-1 Sample Layers Asbestos Content Gray Sink Undercoating ND Sample Composite Homogeneity: Good Location: HQ-Heck-SU02-C, Grey Sink Undercoat Lab ID-Version‡: 20286989-1 Sample Layers Asbestos Content Gray Sink Undercoating ND Sample Composite Homogeneity: Good Location: HQ-Heck-CT05-A, White 2x2'Ceiling Tiles with Holes Lab ID-Version‡: 20286990-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 60% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 63 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CT05-B, White 2x2'Ceiling Tiles with Holes Lab ID-Version‡: 20286991-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 60% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT05-C, White 2x2'Ceiling Tiles with Holes Lab ID-Version‡: 20286992-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 60% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF02-A, Stone Pattern Vinyl Sheet Flooring Brown Mastic Lab ID-Version‡: 20286993-1 Sample Layers Asbestos Content Light Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF02-B, Stone Pattern Vinyl Sheet Flooring Brown Mastic Lab ID-Version‡: 20286994-1 Sample Layers Asbestos Content Light Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 64 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF02-C, Stone Pattern Vinyl Sheet Flooring Brown Mastic Lab ID-Version‡: 20286995-1 Sample Layers Asbestos Content Brown Mastic ND Light Gray Sheet Flooring with Fibrous Backing ND Composite Non-Asbestos Content: 20% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW04-A, Pink Medium Grain Drywall with Brown Paper Lab ID-Version‡: 20286996-1 Sample Layers Asbestos Content White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW04-B, Pink Medium Grain Drywall with Brown Paper Lab ID-Version‡: 20286997-1 Sample Layers Asbestos Content White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW04-C, Pink Medium Grain Drywall with Brown Paper Lab ID-Version‡: 20286998-1 Sample Layers Asbestos Content White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 65 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CBM05-A, Brown 4" Cove Base with Beige Mastic Lab ID-Version‡: 20286999-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM05-B, Brown 4" Cove Base with Beige Mastic Lab ID-Version‡: 20287000-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM05-C, Brown 4" Cove Base with Beige Mastic Lab ID-Version‡: 20287001-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW05-A, White Medium Grained Drywall with Yellowish Paper Lab ID-Version‡: 20287002-1 Sample Layers Asbestos Content Off-White Joint Compound 2% White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines. EMLab ID: 4066845, Page 66 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-DW05-B, White Medium Grained Drywall with Yellowish Paper Lab ID-Version‡: 20287003-1 Sample Layers Asbestos Content White Drywall with Brown Paper ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW05-C, White Medium Grained Drywall with Yellowish Paper Lab ID-Version‡: 20287004-1 Sample Layers Asbestos Content Off-White Joint Compound 2% White Drywall with Brown Paper ND Composite Asbestos Fibrous Content: < 1% Asbestos Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Comments: Composite asbestos content provided is only for Drywall/Joint compound. Composite content provided for this analysis has been performed by following the NESHAP guidelines. Location: HQ-Heck-VSF03-A, Brown Wood Design Vinyl Sheet Flooring, Brown Mastic Lab ID-Version‡: 20287005-1 Sample Layers Asbestos Content Brown Sheet Flooring ND Brown Mastic ND Sample Composite Homogeneity: Good Location: HQ-Heck-VSF03-B, Brown Wood Design Vinyl Sheet Flooring, Brown Mastic Lab ID-Version‡: 20287006-1 Sample Layers Asbestos Content Brown Sheet Flooring ND Brown Mastic ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 67 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF03-C, Brown Wood Design Vinyl Sheet Flooring, Brown Mastic Lab ID-Version‡: 20287007-1 Sample Layers Asbestos Content Brown Sheet Flooring ND Brown Mastic ND Sample Composite Homogeneity: Good Location: HQ-Heck-CBM06-A, Brown 4" Cove Base with Brown Mastic Lab ID-Version‡: 20287008-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Brown Mastic ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CBM06-B, Brown 4" Cove Base with Brown Mastic Lab ID-Version‡: 20287009-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Brown Mastic ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CBM06-C, Brown 4" Cove Base with Brown Mastic Lab ID-Version‡: 20287010-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Brown Mastic ND Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 68 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-SU03-A, Black Sink Undercoat Lab ID-Version‡: 20287011-1 Sample Layers Asbestos Content Black Sink Undercoating 2% Sample Composite Homogeneity: Good Location: HQ-Heck-SU03-B, Black Sink Undercoat Lab ID-Version‡: 20287012-1 Sample Layers Asbestos Content Black Sink Undercoating 2% Sample Composite Homogeneity: Good Location: HQ-Heck-SU03-C, Black Sink Undercoat Lab ID-Version‡: 20287013-1 Sample Layers Asbestos Content Black Sink Undercoating 2% Sample Composite Homogeneity: Good Location: HQ-Heck-VCM03-A, Green with White Speckles Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287014-1 Sample Layers Asbestos Content Green Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 69 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VCM03-B, Green with White Speckles Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287015-1 Sample Layers Asbestos Content Brown Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM03-C, Green with White Speckles Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287016-1 Sample Layers Asbestos Content Green Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM07-A, Brown 4" Cove Base with Brown Mastic Lab ID-Version‡: 20287017-1 Sample Layers Asbestos Content Brown Baseboard ND Brown Mastic < 1% Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM07-B, Brown 4" Cove Base with Brown Mastic Lab ID-Version‡: 20287018-1 Sample Layers Asbestos Content Brown Baseboard ND Tan Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 70 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CBM07-C, Brown 4" Cove Base with Brown Mastic Lab ID-Version‡: 20287019-1 Sample Layers Asbestos Content Brown Baseboard ND Beige Mastic ND Brown Mastic < 1% Sample Composite Homogeneity: Poor Location: HQ-Heck-VCM04-A, Purple Blue Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287020-1 Sample Layers Asbestos Content Purple Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM04-B, Purple Blue Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287021-1 Sample Layers Asbestos Content Purple Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM04-C, Purple Blue Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287022-1 Sample Layers Asbestos Content Purple Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 71 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-WB01-A, Plywood Wall Board with Brown Mastic Lab ID-Version‡: 20287023-1 Sample Layers Asbestos Content Brown Fiberboard ND Brown Mastic ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB01-B, Plywood Wall Board with Brown Mastic Lab ID-Version‡: 20287024-1 Sample Layers Asbestos Content Brown Fiberboard ND Brown Mastic ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB01-C, Plywood Wall Board with Brown Mastic Lab ID-Version‡: 20287025-1 Sample Layers Asbestos Content Brown Fiberboard ND Brown Mastic ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK05-A, Blue Brittle Hard Caulk Along AC Unit Seams Lab ID-Version‡: 20287026-1 Sample Layers Asbestos Content Blue Caulk ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 72 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK05-B, Blue Brittle Hard Caulk Along AC Unit Seams Lab ID-Version‡: 20287027-1 Sample Layers Asbestos Content Blue Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK05-C, Blue Brittle Hard Caulk Along AC Unit Seams Lab ID-Version‡: 20287028-1 Sample Layers Asbestos Content Blue Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CT06-A, White 12x12" Ceiling Tiles with Two Sizes of Holes Lab ID-Version‡: 20287029-1 Sample Layers Asbestos Content Brown Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT06-B, White 12x12" Ceiling Tiles with Two Sizes of Holes Lab ID-Version‡: 20287030-1 Sample Layers Asbestos Content Brown Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 73 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CT06-C, White 12x12" Ceiling Tiles with Two Sizes of Holes Lab ID-Version‡: 20287031-1 Sample Layers Asbestos Content Brown Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 80% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT14-A, Grey Beige with Red Streaks 9x9" Vinyl Floor Tiles, Black Mastic Lab ID-Version‡: 20287032-1 Sample Layers Asbestos Content Tan Floor Tile ND Brown Floor Tile 5% Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT14-B, Grey Beige with Red Streaks 9x9" Vinyl Floor Tiles, Black Mastic Lab ID-Version‡: 20287033-1 Sample Layers Asbestos Content Brown Floor Tile 5% Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT14-C, Grey Beige with Red Streaks 9x9" Vinyl Floor Tiles, Black Mastic Lab ID-Version‡: 20287034-1 Sample Layers Asbestos Content Brown Floor Tile 5% Black Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 74 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM06-A, Dark Green Carpet with Multicolor Diagonal Streaks and Speckles, Brown Mastic Lab ID-Version‡: 20287035-1 Sample Layers Asbestos Content Green Carpet ND Yellow Mortar ND Black Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM06-B, Dark Green Carpet with Multicolor Diagonal Streaks and Speckles, Brown Mastic Lab ID-Version‡: 20287036-1 Sample Layers Asbestos Content Green Carpet ND Yellow Mortar ND Black Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM06-C, Dark Green Carpet with Multicolor Diagonal Streaks and Speckles, Brown Mastic Lab ID-Version‡: 20287037-1 Sample Layers Asbestos Content Green Carpet ND Yellow Mortar ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CT07-A, White 2x4' Ceiling Tiles with Brown Unidirectional Squiggles Lab ID-Version‡: 20287038-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 60% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 75 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CT07-B, White 2x4' Ceiling Tiles with Brown Unidirectional Squiggles Lab ID-Version‡: 20287039-1 Sample Layers Asbestos Content Tan Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 60% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CT07-C, White 2x4' Ceiling Tiles with Brown Unidirectional Squiggles Lab ID-Version‡: 20287040-1 Sample Layers Asbestos Content Beige Ceiling Tile with White Surface ND Composite Non-Asbestos Content: 60% Cellulose 20% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT05-A, Beige 12x12" Vinyl Floor Tile with Grey and White Splotch Streaks, Brown Mastic Lab ID-Version‡: 20287041-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT05-B, Beige 12x12" Vinyl Floor Tile with Grey and White Splotch Streaks, Brown Mastic Lab ID-Version‡: 20287042-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 76 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT05-C, Beige 12x12" Vinyl Floor Tile with Grey and White Splotch Streaks, Brown Mastic Lab ID-Version‡: 20287043-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM05-A, Blue Vinyl Countertop with Beige Mastic Lab ID-Version‡: 20287044-1 Sample Layers Asbestos Content Blue Countertop ND Beige Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM05-B, Blue Vinyl Countertop with Beige Mastic Lab ID-Version‡: 20287045-1 Sample Layers Asbestos Content Blue Countertop ND Beige Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM05-C, Blue Vinyl Countertop with Beige Mastic Lab ID-Version‡: 20287046-1 Sample Layers Asbestos Content Blue Countertop ND Beige Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 77 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM07-A, Reddish Brown Carpet with Beige Mastic Lab ID-Version‡: 20287047-1 Sample Layers Asbestos Content Brown Carpet ND Beige Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM07-B, Reddish Brown Carpet with Beige Mastic Lab ID-Version‡: 20287048-1 Sample Layers Asbestos Content Brown Carpet ND Beige Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM07-C, Reddish Brown Carpet with Beige Mastic Lab ID-Version‡: 20287049-1 Sample Layers Asbestos Content Brown Carpet ND Beige Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT06-A, Dark Beige with Multicolor Swirl Splotches, 12x12" Vinyl Floor Tile Brown Mastic Lab ID-Version‡: 20287050-1 Sample Layers Asbestos Content Beige Floor Tile ND Black Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 78 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT06-B, Dark Beige with Multicolor Swirl Splotches, 12x12" Vinyl Floor Tile Brown Mastic Lab ID-Version‡: 20287051-1 Sample Layers Asbestos Content Beige Floor Tile ND Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT06-C, Dark Beige with Multicolor Swirl Splotches, 12x12" Vinyl Floor Tile Brown Mastic Lab ID-Version‡: 20287052-1 Sample Layers Asbestos Content Beige Floor Tile ND Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM08-A, Green Brown 2x2' Carpet Squres with Blue and Brown Streaks with Brown Mastic Lab ID-Version‡: 20287053-1 Sample Layers Asbestos Content Gray Carpet ND Black Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM08-B, Green Brown 2x2' Carpet Squres with Blue and Brown Streaks with Brown Mastic Lab ID-Version‡: 20287054-1 Sample Layers Asbestos Content Gray Carpet ND Beige Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 79 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM08-C, Green Brown 2x2' Carpet Squres with Blue and Brown Streaks with Brown Mastic Lab ID-Version‡: 20287055-1 Sample Layers Asbestos Content Gray Carpet ND Beige Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB02-A, Brown Painted White Wall Board with Beige Mastic and Green Chalkboard Lab ID-Version‡: 20287056-1 Sample Layers Asbestos Content Brown Fiberboard ND Green Chalkboard 7% Composite Non-Asbestos Content: 60% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB02-B, Brown Painted White Wall Board with Beige Mastic and Green Chalkboard Lab ID-Version‡: 20287057-1 Sample Layers Asbestos Content Brown Fiberboard ND Green Chalkboard 7% Composite Non-Asbestos Content: 60% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB02-C, Brown Painted White Wall Board with Beige Mastic and Green Chalkboard Lab ID-Version‡: 20287058-1 Sample Layers Asbestos Content Brown Fiberboard ND Green Chalkboard 7% Composite Non-Asbestos Content: 60% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 80 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM09-A, Grey Carpet with Beige and Brown Speckles with Brown Mastic Lab ID-Version‡: 20287059-1 Sample Layers Asbestos Content Gray Carpet ND Brown Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM09-B, Grey Carpet with Beige and Brown Speckles with Brown Mastic Lab ID-Version‡: 20287060-1 Sample Layers Asbestos Content Gray Carpet ND Brown Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM09-C, Grey Carpet with Beige and Brown Speckles with Brown Mastic Lab ID-Version‡: 20287061-1 Sample Layers Asbestos Content Gray Carpet ND Brown Mastic ND Composite Non-Asbestos Content: 60% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM06-A, Green Marble Pattern Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287062-1 Sample Layers Asbestos Content Green Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 81 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VCM06-B, Green Marble Pattern Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287063-1 Sample Layers Asbestos Content Green Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM06-C, Green Marble Pattern Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287064-1 Sample Layers Asbestos Content Green Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 50% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK06-A, White Thick Hard Caulk Around Doors Lab ID-Version‡: 20287065-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK06-B, White Thick Hard Caulk Around Doors Lab ID-Version‡: 20287066-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 82 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK06-C, White Thick Hard Caulk Around Doors Lab ID-Version‡: 20287067-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF04-A, Grey Stone Pattern Sheet Flooring with Brown Mastic Lab ID-Version‡: 20287068-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 5% Cellulose 4% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-VSF04-B, Grey Stone Pattern Sheet Flooring with Brown Mastic Lab ID-Version‡: 20287069-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 5% Cellulose 4% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-VSF04-C, Grey Stone Pattern Sheet Flooring with Brown Mastic Lab ID-Version‡: 20287070-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 5% Cellulose 4% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 83 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF05-A, Light Grey Giraffe Pattern Vinyl Sheet Floor, Brown Mastic Lab ID-Version‡: 20287071-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Tan Mastic ND Brown Mastic ND Composite Non-Asbestos Content: 20% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-VSF05-B, Light Grey Giraffe Pattern Vinyl Sheet Floor, Brown Mastic Lab ID-Version‡: 20287072-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Tan Mastic ND Brown Mastic ND Composite Non-Asbestos Content: 20% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-VSF05-C, Light Grey Giraffe Pattern Vinyl Sheet Floor, Brown Mastic Lab ID-Version‡: 20287073-1 Sample Layers Asbestos Content Gray Sheet Flooring with Fibrous Backing ND Tan Mastic ND Brown Mastic ND Composite Non-Asbestos Content: 20% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-WPR01-A, Beige and Brown Splotch Wallpaper Lab ID-Version‡: 20287074-1 Sample Layers Asbestos Content Beige Wallpaper ND Gray Fibrous Material ND Composite Non-Asbestos Content: 25% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 84 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-WPR01-B, Beige and Brown Splotch Wallpaper Lab ID-Version‡: 20287075-1 Sample Layers Asbestos Content Beige Wallpaper ND Gray Fibrous Material ND Composite Non-Asbestos Content: 25% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-WPR01-C, Beige and Brown Splotch Wallpaper Lab ID-Version‡: 20287076-1 Sample Layers Asbestos Content Beige Wallpaper ND Gray Fibrous Material ND Composite Non-Asbestos Content: 25% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM07-A, Beige with Speckle Vinyl Counter Top with Brown Mastic Lab ID-Version‡: 20287077-1 Sample Layers Asbestos Content Beige Countertop ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM07-B, Beige with Speckle Vinyl Counter Top with Brown Mastic Lab ID-Version‡: 20287078-1 Sample Layers Asbestos Content Beige Countertop ND Brown Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 85 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VCM07-C, Beige with Speckle Vinyl Counter Top with Brown Mastic Lab ID-Version‡: 20287079-1 Sample Layers Asbestos Content Beige Countertop ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-WP02-A, Blue Wall Padding with Brown Mastic Lab ID-Version‡: 20287080-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Padding) ND Sample Composite Homogeneity: Good Comments: No brown mastic detected. Location: HQ-Heck-WP02-B, Blue Wall Padding with Brown Mastic Lab ID-Version‡: 20287081-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Padding) ND Sample Composite Homogeneity: Good Comments: No brown mastic detected. Location: HQ-Heck-WP02-C, Blue Wall Padding with Brown Mastic Lab ID-Version‡: 20287082-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Padding) ND Sample Composite Homogeneity: Good Comments: No brown mastic detected. EMLab ID: 4066845, Page 86 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM10-A, Red Carpet with Diamond Pattern, Tan Mastic Lab ID-Version‡: 20287083-1 Sample Layers Asbestos Content Red Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM10-B, Red Carpet with Diamond Pattern, Tan Mastic Lab ID-Version‡: 20287084-1 Sample Layers Asbestos Content Red Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM10-C, Red Carpet with Diamond Pattern, Tan Mastic Lab ID-Version‡: 20287085-1 Sample Layers Asbestos Content Red Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM11-A, Red Carpet with Diamond Pattern, Tan Mastic Lab ID-Version‡: 20287086-1 Sample Layers Asbestos Content Red Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 87 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM11-B, Red Carpet with Diamond Pattern, Tan Mastic Lab ID-Version‡: 20287087-1 Sample Layers Asbestos Content Red Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM11-C, Red Carpet with Diamond Pattern, Tan Mastic Lab ID-Version‡: 20287088-1 Sample Layers Asbestos Content Red Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT02-A, Pink Square Ceramic Wall Tile with White Grout Lab ID-Version‡: 20287089-1 Sample Layers Asbestos Content Pink Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT02-B, Pink Square Ceramic Wall Tile with White Grout Lab ID-Version‡: 20287090-1 Sample Layers Asbestos Content Pink Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 88 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CWT02-C, Pink Square Ceramic Wall Tile with White Grout Lab ID-Version‡: 20287091-1 Sample Layers Asbestos Content Pink Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT07-A, Grey 2x2' with Beige Splotches Vinyl Floor Tile, Brown Mastic Lab ID-Version‡: 20287092-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Black Mastic 2% Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT07-B, Grey 2x2' with Beige Splotches Vinyl Floor Tile, Brown Mastic Lab ID-Version‡: 20287093-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Black Mastic (Trace) 2% Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT07-C, Grey 2x2' with Beige Splotches Vinyl Floor Tile, Brown Mastic Lab ID-Version‡: 20287094-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 89 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT08-A, Beige 12x12" With Red Streaks Vinyl Floor Tile with Brown Mastic Lab ID-Version‡: 20287095-1 Sample Layers Asbestos Content Beige Floor Tile 2% Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT08-B, Beige 12x12" With Red Streaks Vinyl Floor Tile with Brown Mastic Lab ID-Version‡: 20287096-1 Sample Layers Asbestos Content Beige Floor Tile ND Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT08-C, Beige 12x12" With Red Streaks Vinyl Floor Tile with Brown Mastic Lab ID-Version‡: 20287097-1 Sample Layers Asbestos Content Beige Floor Tile 2% Brown Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM12-A, Blue with Purple and Pink Speckle Carpet with Tan Mastic Lab ID-Version‡: 20287098-1 Sample Layers Asbestos Content Multicolored Carpet ND Tan Mastic ND Black Mastic 2% Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 90 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM12-B, Blue with Purple and Pink Speckle Carpet with Tan Mastic Lab ID-Version‡: 20287099-1 Sample Layers Asbestos Content Multicolored Carpet ND Tan Mastic ND Black Mastic 2% Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CPM12-C, Blue with Purple and Pink Speckle Carpet with Tan Mastic Lab ID-Version‡: 20287100-1 Sample Layers Asbestos Content Multicolored Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 30% Fibers Sample Composite Homogeneity: Poor Location: HQ-Heck-CBM08-A, Black 6" Cove Base with Beige Mastic Lab ID-Version‡: 20287101-1 Sample Layers Asbestos Content Black Cove Base ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM08-B, Black 6" Cove Base with Beige Mastic Lab ID-Version‡: 20287102-1 Sample Layers Asbestos Content Black Cove Base ND Beige Mastic ND White Compound ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 91 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CBM08-C, Black 6" Cove Base with Beige Mastic Lab ID-Version‡: 20287103-1 Sample Layers Asbestos Content Black Cove Base ND Beige Mastic ND White Compound < 1% Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM08-A, Beige Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287104-1 Sample Layers Asbestos Content Brown Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 40% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM08-B, Beige Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287105-1 Sample Layers Asbestos Content Brown Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 40% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VCM08-C, Beige Vinyl Countertop with Brown Mastic Lab ID-Version‡: 20287106-1 Sample Layers Asbestos Content Brown Countertop ND Brown Mastic ND Composite Non-Asbestos Content: 40% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 92 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK07-A, White Hard Caulk Around Bottom of Doorway Lab ID-Version‡: 20287107-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK07-B, White Hard Caulk Around Bottom of Doorway Lab ID-Version‡: 20287108-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK07-C, White Hard Caulk Around Bottom of Doorway Lab ID-Version‡: 20287109-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CPM13-A, Multicolor Linear Carpet(Blue, Green, Brown, Red) Tan Mastic Lab ID-Version‡: 20287110-1 Sample Layers Asbestos Content Multicolored Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 93 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM13-B, Multicolor Linear Carpet(Blue, Green, Brown, Red) Tan Mastic Lab ID-Version‡: 20287111-1 Sample Layers Asbestos Content Multicolored Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM13-C, Multicolor Linear Carpet(Blue, Green, Brown, Red) Tan Mastic Lab ID-Version‡: 20287112-1 Sample Layers Asbestos Content Multicolored Carpet ND Tan Mastic ND Composite Non-Asbestos Content: 70% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT09-A, Beige and Grey Vinyl Floor with White and Brown Wave Pattern, Brown Mastic Lab ID-Version‡: 20287113-1 Sample Layers Asbestos Content Gray Floor Tile ND Black/Yellow Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT09-B, Beige and Grey Vinyl Floor with White and Brown Wave Pattern, Brown Mastic Lab ID-Version‡: 20287114-1 Sample Layers Asbestos Content Gray Floor Tile ND Black/Yellow Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 94 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT09-C, Beige and Grey Vinyl Floor with White and Brown Wave Pattern, Brown Mastic Lab ID-Version‡: 20287115-1 Sample Layers Asbestos Content Gray Floor Tile ND Black/Yellow Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW06-A, White Small Grained Thin Drywall Layers Lab ID-Version‡: 20287116-1 Sample Layers Asbestos Content White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 5% Cellulose 2% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW06-B, White Small Grained Thin Drywall Layers Lab ID-Version‡: 20287117-1 Sample Layers Asbestos Content White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 5% Cellulose 2% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW06-C, White Small Grained Thin Drywall Layers Lab ID-Version‡: 20287118-1 Sample Layers Asbestos Content White Joint Compound ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 5% Cellulose 2% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 95 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-SU04-A, White and Blue Sink Undercoat Lab ID-Version‡: 20287119-1 Sample Layers Asbestos Content White Sink Undercoating ND Composite Non-Asbestos Content: 3% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-SU04-B, White and Blue Sink Undercoat Lab ID-Version‡: 20287120-1 Sample Layers Asbestos Content White Sink Undercoating ND Composite Non-Asbestos Content: 3% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-SU04-C, White and Blue Sink Undercoat Lab ID-Version‡: 20287121-1 Sample Layers Asbestos Content White Sink Undercoating ND Composite Non-Asbestos Content: 3% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-VCM09-A, Beige and Peach Vinyl Countertop, Speckled Brown Mastic Lab ID-Version‡: 20287122-1 Sample Layers Asbestos Content Brown Mastic ND Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 96 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VCM09-B, Beige and Peach Vinyl Countertop, Speckled Brown Mastic Lab ID-Version‡: 20287123-1 Sample Layers Asbestos Content Brown Mastic ND Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-VCM09-C, Beige and Peach Vinyl Countertop, Speckled Brown Mastic Lab ID-Version‡: 20287124-1 Sample Layers Asbestos Content Brown Mastic ND Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-VFT10-A, White 12x12 Vinyl Floor with Blue Splotches, Brown Mastic Lab ID-Version‡: 20287125-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic 3% Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT10-B, White 12x12 Vinyl Floor with Blue Splotches, Brown Mastic Lab ID-Version‡: 20287126-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic 3% Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 97 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT10-C, White 12x12 Vinyl Floor with Blue Splotches, Brown Mastic Lab ID-Version‡: 20287127-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic 3% Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM14-A, Dark Blue 2x2' Square Carpet Tiles with Linear Striping Brown Mastic Lab ID-Version‡: 20287128-1 Sample Layers Asbestos Content Gray Carpet Tile ND Brown Mastic ND Gray Leveling Compound ND Composite Non-Asbestos Content: 50% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM14-B, Dark Blue 2x2' Square Carpet Tiles with Linear Striping Brown Mastic Lab ID-Version‡: 20287129-1 Sample Layers Asbestos Content Gray Carpet Tile ND Brown Mastic ND Gray Leveling Compound ND Composite Non-Asbestos Content: 50% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM14-C, Dark Blue 2x2' Square Carpet Tiles with Linear Striping Brown Mastic Lab ID-Version‡: 20287130-1 Sample Layers Asbestos Content Gray Carpet Tile ND Brown Mastic ND Composite Non-Asbestos Content: 50% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 98 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CPM15-A, Brown and Grey Linear Pattern 2x2' Carpet Squares, Brown Mastic Lab ID-Version‡: 20287131-1 Sample Layers Asbestos Content Gray Carpet Tile ND Green Mastic ND Black Mastic ND Gray Leveling Compound ND Composite Non-Asbestos Content: 50% Fibers Sample Composite Homogeneity: Moderate Comments: Brown Mastic Not Detected. Location: HQ-Heck-CPM15-B, Brown and Grey Linear Pattern 2x2' Carpet Squares, Brown Mastic Lab ID-Version‡: 20287132-1 Sample Layers Asbestos Content Gray Carpet Tile ND Green Mastic ND Black Mastic ND Gray Leveling Compound ND Composite Non-Asbestos Content: 50% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CPM15-C, Brown and Grey Linear Pattern 2x2' Carpet Squares, Brown Mastic Lab ID-Version‡: 20287133-1 Sample Layers Asbestos Content Gray Carpet Tile ND Green Mastic ND Black Mastic ND Gray Leveling Compound ND Composite Non-Asbestos Content: 50% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 99 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF06-A, Beige Tan Marble Stone Pattern Vinyl Sheet Flooring, Brown Mastic Lab ID-Version‡: 20287134-1 Sample Layers Asbestos Content Beige Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 100 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF06-B, Beige Tan Marble Stone Pattern Vinyl Sheet Flooring, Brown Mastic Lab ID-Version‡: 20287135-1 Sample Layers Asbestos Content Beige Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF06-C, Beige Tan Marble Stone Pattern Vinyl Sheet Flooring, Brown Mastic Lab ID-Version‡: 20287136-1 Sample Layers Asbestos Content Beige Sheet Flooring with Fibrous Backing ND Brown Mastic ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM09-A, Brown 6" Cove Base with Beige Mastic Lab ID-Version‡: 20287137-1 Sample Layers Asbestos Content Brown Cove Base ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CBM09-B, Brown 6" Cove Base with Beige Mastic Lab ID-Version‡: 20287138-1 Sample Layers Asbestos Content Brown Cove Base ND Beige Mastic ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 101 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CBM09-C, Brown 6" Cove Base with Beige Mastic Lab ID-Version‡: 20287139-1 Sample Layers Asbestos Content Brown Cove Base ND Beige Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF07-A, Multicolor Stone Pattern Vinyl Sheet Flooring, Beige Mastic Lab ID-Version‡: 20287140-1 Sample Layers Asbestos Content Beige Sheet Flooring with Fibrous Backing ND Beige Mastic ND Tan Floor Tile (Trace) 3% Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF07-B, Multicolor Stone Pattern Vinyl Sheet Flooring, Beige Mastic Lab ID-Version‡: 20287141-1 Sample Layers Asbestos Content Beige Sheet Flooring with Fibrous Backing ND Beige Mastic ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF07-C, Multicolor Stone Pattern Vinyl Sheet Flooring, Beige Mastic Lab ID-Version‡: 20287142-1 Sample Layers Asbestos Content Beige Sheet Flooring with Fibrous Backing ND Beige Mastic ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 102 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT11-A, White 12x12" Vinyl Floor Tile with Blue and Brown Splotches, Brown Mastic Lab ID-Version‡: 20287143-1 Sample Layers Asbestos Content White Sheet Flooring with Fibrous Backing ND Brown Mastic ND White Floor Tile ND Yellow Mastic ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT11-B, White 12x12" Vinyl Floor Tile with Blue and Brown Splotches, Brown Mastic Lab ID-Version‡: 20287144-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic ND Composite Non-Asbestos Content: < 1% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT11-C, White 12x12" Vinyl Floor Tile with Blue and Brown Splotches, Brown Mastic Lab ID-Version‡: 20287145-1 Sample Layers Asbestos Content White Floor Tile ND Brown Mastic ND Gray Leveling Compound ND Composite Non-Asbestos Content: < 1% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT12-A, Beige Tan 9x9" Vinyl Floor Tiles, Brown Mastic Lab ID-Version‡: 20287146-1 Sample Layers Asbestos Content Tan Floor Tile 5% Black Mastic ND Composite Non-Asbestos Content: < 1% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 103 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VFT12-B, Beige Tan 9x9" Vinyl Floor Tiles, Brown Mastic Lab ID-Version‡: 20287147-1 Sample Layers Asbestos Content Tan Floor Tile 5% Black Mastic ND Composite Non-Asbestos Content: < 1% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT12-C, Beige Tan 9x9" Vinyl Floor Tiles, Brown Mastic Lab ID-Version‡: 20287148-1 Sample Layers Asbestos Content Tan Floor Tile 5% Black Mastic ND Composite Non-Asbestos Content: < 1% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON05-A, Grey Medium Mineral Lab ID-Version‡: 20287149-1 Sample Layers Asbestos Content Gray Cementitious Material ND Sample Composite Homogeneity: Good Location: HQ-Heck-CON05-B, Grey Medium Mineral Lab ID-Version‡: 20287150-1 Sample Layers Asbestos Content Gray Cementitious Material ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 104 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON05-C, Grey Medium Mineral Lab ID-Version‡: 20287151-1 Sample Layers Asbestos Content Gray Cementitious Material ND Sample Composite Homogeneity: Good Location: HQ-Heck-CON06-A, Light Grey White Concrete Pad with Large Mineral Lab ID-Version‡: 20287152-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck-CON06-B, Light Grey White Concrete Pad with Large Mineral Lab ID-Version‡: 20287153-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck-CON06-C, Light Grey White Concrete Pad with Large Mineral Lab ID-Version‡: 20287154-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 105 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-FCB01-A, Black Felt Concrete Barrier Lab ID-Version‡: 20287155-1 Sample Layers Asbestos Content Gray Felt ND Composite Non-Asbestos Content: 100% Fibers Sample Composite Homogeneity: Good Location: HQ-Heck-FCB01-B, Black Felt Concrete Barrier Lab ID-Version‡: 20287156-1 Sample Layers Asbestos Content Gray Felt ND Composite Non-Asbestos Content: 100% Fibers Sample Composite Homogeneity: Good Location: HQ-Heck-FCB01-C, Black Felt Concrete Barrier Lab ID-Version‡: 20287157-1 Sample Layers Asbestos Content Gray Felt ND Composite Non-Asbestos Content: 100% Fibers Sample Composite Homogeneity: Good Location: HQ-Heck-CON07-A, Gray Concrete Foundation Lab ID-Version‡: 20287158-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 106 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON07-B, Gray Concrete Foundation Lab ID-Version‡: 20287159-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck-CON07-C, Gray Concrete Foundation Lab ID-Version‡: 20287160-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK08-A, White Brittle Caulk Lab ID-Version‡: 20287161-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK08-B, White Brittle Caulk Lab ID-Version‡: 20287162-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 107 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK08-C, White Brittle Caulk Lab ID-Version‡: 20287163-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-WB03-A, Brown Painted Wooden/Plywood Wall Board Lab ID-Version‡: 20287164-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Wallboard) 10% White Non-Fibrous Material (Walllbaord) < 1% Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB03-B, Brown Painted Wooden/Plywood Wall Board Lab ID-Version‡: 20287165-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Wallboard) 10% Sample Composite Homogeneity: Moderate Location: HQ-Heck-WB03-C, Brown Painted Wooden/Plywood Wall Board Lab ID-Version‡: 20287166-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Wallboard) 10% White Non-Fibrous Material (Walllbaord) < 1% Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 108 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK09-A, White Tan Caulk Lab ID-Version‡: 20287167-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK09-B, White Tan Caulk Lab ID-Version‡: 20287168-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-CK09-C, White Tan Caulk Lab ID-Version‡: 20287169-1 Sample Layers Asbestos Content White Caulk ND Sample Composite Homogeneity: Good Location: HQ-Heck-WB04-A, White Verticle Wood Wall Board Lab ID-Version‡: 20287170-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Wallboard) ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 109 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-WB04-B, White Verticle Wood Wall Board Lab ID-Version‡: 20287171-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Wallboard) ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-WB04-C, White Verticle Wood Wall Board Lab ID-Version‡: 20287172-1 Sample Layers Asbestos Content Gray Non-Fibrous Material (Wallboard) ND Composite Non-Asbestos Content: 10% Cellulose Sample Composite Homogeneity: Good Location: HQ-Heck-ASP01-A, Black Asphalt Lab ID-Version‡: 20287173-1 Sample Layers Asbestos Content Black Asphalt ND Sample Composite Homogeneity: Poor Location: HQ-Heck-ASP01-B, Black Asphalt Lab ID-Version‡: 20287174-1 Sample Layers Asbestos Content Black Asphalt ND Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 110 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-ASP01-C, Black Asphalt Lab ID-Version‡: 20287175-1 Sample Layers Asbestos Content Black Asphalt ND Sample Composite Homogeneity: Poor Location: HQ-Heck-VB01-A, Black Roof Vapor Barrier Lab ID-Version‡: 20287176-1 Sample Layers Asbestos Content Black Vapor Barrier ND Composite Non-Asbestos Content: 5% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VB01-B, Black Roof Vapor Barrier Lab ID-Version‡: 20287177-1 Sample Layers Asbestos Content Black Vapor Barrier ND Composite Non-Asbestos Content: 5% Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-VB01-C, Black Roof Vapor Barrier Lab ID-Version‡: 20287178-1 Sample Layers Asbestos Content Black Vapor Barrier ND Composite Non-Asbestos Content: 5% Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 111 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CK10-A, White Painted Caulk Lab ID-Version‡: 20287179-1 Sample Layers Asbestos Content Brown Wood ND White Caulk ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK10-B, White Painted Caulk Lab ID-Version‡: 20287180-1 Sample Layers Asbestos Content Brown Wood ND White Caulk ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CK10-C, White Painted Caulk Lab ID-Version‡: 20287181-1 Sample Layers Asbestos Content Brown Wood ND White Caulk ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-PS01-A, White Thick Penetrating Sealant Lab ID-Version‡: 20287182-1 Sample Layers Asbestos Content Black Mastic ND White Sealant ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 112 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PS01-B, White Thick Penetrating Sealant Lab ID-Version‡: 20287183-1 Sample Layers Asbestos Content White Sealant ND Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-PS01-C, White Thick Penetrating Sealant Lab ID-Version‡: 20287184-1 Sample Layers Asbestos Content White Sealant ND Black Mastic ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-RS01-A, Black Roofing System Lab ID-Version‡: 20287185-1 Sample Layers Asbestos Content Black Roofing Felt ND Composite Non-Asbestos Content: 5% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-RS01-B, Black Roofing System Lab ID-Version‡: 20287186-1 Sample Layers Asbestos Content Black Roofing Felt ND Composite Non-Asbestos Content: 5% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 113 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-RS01-C, Black Roofing System Lab ID-Version‡: 20287187-1 Sample Layers Asbestos Content Black Roofing Felt ND Composite Non-Asbestos Content: 5% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-CON08-A, Dark Grey Concrete Concrete Pad with Large Mineral Lab ID-Version‡: 20287188-1 Sample Layers Asbestos Content Dark Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CON08-B, Dark Grey Concrete Concrete Pad with Large Mineral Lab ID-Version‡: 20287189-1 Sample Layers Asbestos Content Dark Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CON08-C, Dark Grey Concrete Concrete Pad with Large Mineral Lab ID-Version‡: 20287190-1 Sample Layers Asbestos Content Dark Gray Concrete ND Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 114 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON09-A, Grey Concrete with Pink Paint and Very Large Mineral Lab ID-Version‡: 20287191-1 Sample Layers Asbestos Content Dark Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CON09-B, Grey Concrete with Pink Paint and Very Large Mineral Lab ID-Version‡: 20287192-1 Sample Layers Asbestos Content Dark Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CON09-C, Grey Concrete with Pink Paint and Very Large Mineral Lab ID-Version‡: 20287193-1 Sample Layers Asbestos Content Dark Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-PIW03-A, White 13" Pipe Insulation Lab ID-Version‡: 20287194-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 115 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW03-B, White 13" Pipe Insulation Lab ID-Version‡: 20287195-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW03-C, White 13" Pipe Insulation Lab ID-Version‡: 20287196-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW04-A, White 10" Pipe Insulation Lab ID-Version‡: 20287197-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 116 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW04-B, White 10" Pipe Insulation Lab ID-Version‡: 20287198-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 117 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW04-C, White 10" Pipe Insulation Lab ID-Version‡: 20287199-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW05-A, White 7" Pipe Insulation Lab ID-Version‡: 20287200-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW05-B, White 7" Pipe Insulation Lab ID-Version‡: 20287201-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 118 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW05-C, White 7" Pipe Insulation Lab ID-Version‡: 20287202-1 Sample Layers Asbestos Content White Paper ND Yellow Insulation ND Silver Tape ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 119 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW06-A, White 20" Pipe Insulation Lab ID-Version‡: 20287203-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW06-B, White 20" Pipe Insulation Lab ID-Version‡: 20287204-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW06-C, White 20" Pipe Insulation Lab ID-Version‡: 20287205-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 120 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW07-A, White 3" Pipe Insulation Lab ID-Version‡: 20287206-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 121 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW07-B, White 3" Pipe Insulation Lab ID-Version‡: 20287207-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW07-C, White 3" Pipe Insulation Lab ID-Version‡: 20287208-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW08-A, White 5" Pipe Insulation Lab ID-Version‡: 20287209-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 122 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW08-B, White 5" Pipe Insulation Lab ID-Version‡: 20287210-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 123 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW08-C, White 5" Pipe Insulation Lab ID-Version‡: 20287211-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW09-A, White 4" Pipe Insulation Lab ID-Version‡: 20287212-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-PIW09-B, White 4" Pipe Insulation Lab ID-Version‡: 20287213-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 124 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-PIW09-C, White 4" Pipe Insulation Lab ID-Version‡: 20287214-1 Sample Layers Asbestos Content Silver Tape ND White Paper ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 3% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 125 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-BI01-A, White Boiler Insulation Lab ID-Version‡: 20287215-1 Sample Layers Asbestos Content Cream Tape ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 5% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-BI01-B, White Boiler Insulation Lab ID-Version‡: 20287216-1 Sample Layers Asbestos Content Cream Tape ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 5% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-BI01-C, White Boiler Insulation Lab ID-Version‡: 20287217-1 Sample Layers Asbestos Content Cream Tape ND Yellow Insulation ND Composite Non-Asbestos Content: 50% Glass Fibers 5% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CMU01-A, White CMU Block Mortar Lab ID-Version‡: 20287218-1 Sample Layers Asbestos Content Gray Mortar ND White Coating ND Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 126 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CMU01-B, White CMU Block Mortar Lab ID-Version‡: 20287219-1 Sample Layers Asbestos Content White Coating ND Gray Mortar ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CMU01-C, White CMU Block Mortar Lab ID-Version‡: 20287220-1 Sample Layers Asbestos Content White Coating ND Gray Mortar ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CON10-A, Gray Concrete Floor Lab ID-Version‡: 20287221-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-CON10-B, Gray Concrete Floor Lab ID-Version‡: 20287222-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Poor EMLab ID: 4066845, Page 127 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CON10-C, Gray Concrete Floor Lab ID-Version‡: 20287223-1 Sample Layers Asbestos Content Gray Concrete ND Sample Composite Homogeneity: Poor Location: HQ-Heck-DW07-A, White Fine Grained Drywall Lab ID-Version‡: 20287224-1 Sample Layers Asbestos Content White Drywall with Brown Paper ND Off-White Joint Compound with Paint ND Cream Tape ND Off-White Joint Compound ND Composite Non-Asbestos Content: 5% Cellulose 2% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW07-B, White Fine Grained Drywall Lab ID-Version‡: 20287225-1 Sample Layers Asbestos Content Off-White Joint Compound with Paint ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 5% Cellulose 2% Glass Fibers Sample Composite Homogeneity: Moderate Location: HQ-Heck-DW07-C, White Fine Grained Drywall Lab ID-Version‡: 20287226-1 Sample Layers Asbestos Content Off-White Joint Compound with Paint ND White Drywall with Brown Paper ND Composite Non-Asbestos Content: 5% Cellulose 2% Glass Fibers Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 128 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CWT03-A, White Square Ceramic Wall Tile, White Grout Lab ID-Version‡: 20287227-1 Sample Layers Asbestos Content White Ceramic Tile ND White Grout ND White Adhesive ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT03-B, White Square Ceramic Wall Tile, White Grout Lab ID-Version‡: 20287228-1 Sample Layers Asbestos Content White Ceramic Tile ND White Grout ND White Adhesive ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT03-C, White Square Ceramic Wall Tile, White Grout Lab ID-Version‡: 20287229-1 Sample Layers Asbestos Content White Grout ND White Adhesive ND White Ceramic Tile ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF08-A, Cream Multicolor Splotchy Vinyl Sheet Flooring, Tan Mastic Lab ID-Version‡: 20287230-1 Sample Layers Asbestos Content Cream Sheet Flooring ND Yellow Adhesive ND Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 129 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-VSF08-B, Cream Multicolor Splotchy Vinyl Sheet Flooring, Tan Mastic Lab ID-Version‡: 20287231-1 Sample Layers Asbestos Content Cream Sheet Flooring ND Yellow Adhesive ND Gray Leveling Compound ND Gray Concrete ND Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-VSF08-C, Cream Multicolor Splotchy Vinyl Sheet Flooring, Tan Mastic Lab ID-Version‡: 20287232-1 Sample Layers Asbestos Content Cream Sheet Flooring ND Yellow Adhesive ND Gray Leveling Compound ND Composite Non-Asbestos Content: 5% Cellulose Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT04-A, Dark Green Square Ceramic Wall Tile, White Grout Lab ID-Version‡: 20287233-1 Sample Layers Asbestos Content Green Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-CWT04-B, Dark Green Square Ceramic Wall Tile, White Grout Lab ID-Version‡: 20287234-1 Sample Layers Asbestos Content Green Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate EMLab ID: 4066845, Page 130 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS PLM REPORT Location: HQ-Heck-CWT04-C, Dark Green Square Ceramic Wall Tile, White Grout Lab ID-Version‡: 20287235-1 Sample Layers Asbestos Content Green Ceramic Tile ND White Grout ND Sample Composite Homogeneity: Moderate Location: HQ-Heck-VFT13-A, Gray with Canyon Color Streaks, Brown Mastic Lab ID-Version‡: 20287236-1 Sample Layers Asbestos Content Gray Floor Tile 3% Brown Mastic 4% Sample Composite Homogeneity: Good Location: HQ-Heck-VFT13-B, Gray with Canyon Color Streaks, Brown Mastic Lab ID-Version‡: 20287237-1 Sample Layers Asbestos Content Gray Floor Tile 3% Brown Mastic 4% Sample Composite Homogeneity: Good Location: HQ-Heck-VFT13-C, Gray with Canyon Color Streaks, Brown Mastic Lab ID-Version‡: 20287238-1 Sample Layers Asbestos Content Gray Floor Tile 3% Brown Mastic 4% Sample Composite Homogeneity: Good EMLab ID: 4066845, Page 131 of 132 Eurofins Built Environment Testing West, LLC The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. All components not quantified as asbestos content and non-asbestos content are considered to be non-fibrous matrix components. Matrix components may include, but are not limited to, gypsum, paint, silicate minerals, vinyl, binder, calcium carbonate, tar, and foam. Inhomogeneous samples are separated into homogeneous subsamples and analyzed individually. ND means no fibers were detected. When detected, the minimum detection and reporting limit is less than 1% unless point counting is performed. Floor tile samples may contain large amounts of interference material and it is recommended that the sample be analyzed by gravimetric point count analysis to lower the detection limit and to aid in asbestos identification. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of ---PAGE BREAK--- Eurofins Built Environment Testing West, LLC 2841 Dow Avenue, Suite 300, Tustin, CA 92780 (833) 465-5857 www.eurofinsus.com/Built Client: Tetra Tech: START/EPA C/O: Tetra Tech START/EPA Re: 103X903523F0060241205; Heck and Quaw Elementary Date of Sampling: 04-27-2025 Date of Receipt: 05-09-2025 Date of Report: 05-28-2025 ASBESTOS GRAVIMETRIC PT. COUNT REPORT PROJECT ANALYST AND SIGNATORY REPORT Project Analyst The test report shall not be reproduced except in full, without written approval of the laboratory. The report must not be used by the client to claim product certification, approval, or endorsement by NVLAP, NIST, or any agency of the federal government. The Company reserves the right to dispose of all samples after a period of thirty (30) days, according to all state and federal guidelines, unless otherwise specified. ‡ A "Version" indicated by after the Lab ID# with a value greater than 1 indicates a sample with amended data. The revision number is reflected by the value of Analyst: Philip Newton EMLab ID: 4066845, Page 3 of 3 Eurofins Built Environment Testing West, LLC ---PAGE BREAK--- Former Heck Elementary School START TD 2360-2506-04 308 North Broadway, Belgrade, MT APPENDIX E: SOIL ANALYTICAL PACKAGE AND DATA VALIDATION ---PAGE BREAK--- Analytical Laboratory Report Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 Report to Report produced by Attention: Brandon Kingsbury Merit Laboratories, Inc. Tetra Tech 2680 East Lansing Drive 1560 Broadway, Ste. 1400 East Lansing, MI 48823 Denver, CO 80202 Phone: (517) 332-0167 FAX: (517) 332-6333 Phone: [PHONE REDACTED] FAX: Email: [EMAIL REDACTED] Contacts for report questions: John Laverty ([EMAIL REDACTED]) Barbara Ball ([EMAIL REDACTED]) Report Summary Lab Sample ID(s): S73672.01-S73672.09 Project: Monitoring Collected Date(s): 04/11/2025 Submitted Date/Time: 04/21/2025 08:40 Sampled by: Brandon Kingsbury P.O. 1188792 Table of Contents Cover Page (Page 1) General Report Notes (Page 2) Report Narrative (Page 2) Laboratory Accreditations (Page 3) Qualifier Descriptions (Page 3) Glossary of Abbreviations (Page 3) Method Summary (Page 4) Sample Summary (Page 5) QC Report (Pages 15-28) Maya Murshak Technical Director Report to Tetra Tech Project: Monitoring Page 1 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report General Report Notes Analytical results relate only to the samples tested, in the condition received by the laboratory. Methods may be modified for improved performance. Results reported on a dry weight basis where applicable. 'Not detected' indicates that parameter was not found at a level equal to or greater than the reporting limit (RL). When MDL results are provided, then 'Not detected' indicates that parameter was not found at a level equal to or greater than the MDL. 40 CFR Part 136 Table II Required Containers, Preservation Techniques and Holding Times for the Clean Water Act specify that samples for acrolein and acrylonitrile, and ether need to be preserved at a pH in the range of 4 to 5 or if not preserved, analyzed within 3 days of sampling. QA/QC corresponding to this analytical report is a separate document with the same Merit ID reference and is available upon request. Starred analytes are not NY NELAP accredited. Samples are held by the lab for 30 days from the final report date unless a written request to hold longer is provided by the client. Report shall not be reproduced except in full, without the written approval of Merit Laboratories, Inc. Limits for drinking water samples, are listed as the MCL Limits (Maximum Contaminant Level Concentrations) PFAS requirement: Section 9.3.8 of U.S. EPA Method 537.1 states "If the method analyte(s) found in the Field Sample is present in the FRB at a concentration greater than 1/3 the MRL, then all samples collected with that FRB are invalid and must be recollected and reanalyzed." Samples submitted without an accompanying FRB may not be acceptable for compliance purposes. Wisconsin PFAs analysis: MDL = LOD; RL = LOQ. LOD and LOQ are adjusted for dilution. All accreditations/certifications held by this laboratory are listed on page 3. Not all accreditations/certifications are applicable to this report. For a specific list of accredited analytes, please feel free to contact the laboratory or visit Report Narrative There is no additional narrative for this analytical report Report to Tetra Tech Project: Monitoring Page 2 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report Laboratory Accreditations (For Reference Only) Authority Accreditation ID Michigan DEQ #9956 DOD ELAP & ISO/IEC 17025:2017 #69699 PJLA Testing WBENC #[PHONE REDACTED] Ohio VAP #CL0002 Indiana DOH #C-MI-07 New York NELAC #11814 North Carolina DENR #680 North Carolina DOH #26702 DEP #68-05884 Wisconsin DNR FID# 399147320 Qualifier Descriptions Qualifier Description ! Result is outside of stated limit criteria B Compound also found in associated method blank E Concentration exceeds calibration range F Analysis run outside of holding time G Estimated result due to extraction run outside of holding time H Sample submitted and run outside of holding time I Matrix interference with internal standard J Estimated value less than reporting limit, but greater than MDL L Elevated reporting limit due to low sample amount M Result reported to MDL not RDL O Analysis performed by outside laboratory. See attached report. R Preliminary result S Surrogate recovery outside of control limits T No correction for total solids X Elevated reporting limit due to matrix interference Y Elevated reporting limit due to high target concentration b Value detected less than reporting limit, but greater than MDL e Reported value estimated due to interference j Analyte also found in associated method blank o Associated EIS outside of control limits p Benzo(b)Fluoranthene and Benzo(k)Fluoranthene integrated as one peak. q Qualifier ion ratio outside of control limits x Preserved from bulk sample Glossary of Abbreviations Abbreviation Description RL/RDL Reporting Limit MDL Method Detection Limit MS Matrix Spike MSD Matrix Spike Duplicate SW EPA SW 846 (Soil and Wastewater) Methods E EPA Methods SM Standard Methods LN Linear BR Branched Report to Tetra Tech Project: Monitoring Page 3 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report Method Summary Method Version SM2540B Standard Method 2540 B 2020 SW3050B SW 846 Method 3050B Revision 2 December 1996 SW6020A SW 846 Method 6020A Revision 1 February 2007 Report to Tetra Tech Project: Monitoring Page 4 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report Sample Summary (9 samples) Sample ID Sample Tag Matrix Collected Date/Time S73672.01 HE-02-SO-0-0.5-20250411 Soil 04/11/25 12:30 S73672.02 HE-03-SO-0-0.5-20250411 Soil 04/11/25 12:45 S73672.03 HE-03-SO-0-0.5-20250411-DUP Soil 04/11/25 12:45 S73672.04 HE-04-SO-0-0.5-20250411 Soil 04/11/25 13:00 S73672.05 HE-05-SO-0-0.5-20250411 Soil 04/11/25 13:15 S73672.06 HE-06-SO-0-0.5-20250411 Soil 04/11/25 13:30 S73672.07 IT-01-SO-0-0.5-20250411 Soil 04/11/25 11:15 S73672.08 IT-03-SO-0-0.5-20250411 Soil 04/11/25 11:30 S73672.09 IT-04-SO-0-0.5-20250411 Soil 04/11/25 11:45 Report to Tetra Tech Project: Monitoring Page 5 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report Lab Sample ID: S73672.01 Sample Tag: HE-02-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 12:30 Matrix: Soil COC Reference: 189319 Sample Containers # Type Preservative(s) Refrigerated? Arrival Temp. Thermometer # 1 4oz Glass None No 16.9 IR Extraction / Prep. Parameter Result Method Run Date Analyst Flags Metal Digestion Completed SW3050B 04/23/25 11:30 JRH Inorganics Method: SM2540B, Run Date: 04/22/25 13:42, Analyst: MAM Parameter Result RL MDL Units Dilution CAS# Flags Total Solids* 91 1 % 1 Metals Method: SW6020A, Run Date: 04/23/25 13:46, Analyst: JRH Parameter Result RL MDL Units Dilution CAS# Flags Lead 22.2 0.30 0.0058 mg/kg 265 7439-92-1 Report to Tetra Tech Project: Monitoring Page 6 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report Lab Sample ID: S73672.02 Sample Tag: HE-03-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 12:45 Matrix: Soil COC Reference: 189319 Sample Containers # Type Preservative(s) Refrigerated? Arrival Temp. Thermometer # 1 4oz Glass None No 16.9 IR Extraction / Prep. Parameter Result Method Run Date Analyst Flags Metal Digestion Completed SW3050B 04/23/25 11:30 JRH Inorganics Method: SM2540B, Run Date: 04/22/25 13:42, Analyst: MAM Parameter Result RL MDL Units Dilution CAS# Flags Total Solids* 89 1 % 1 Metals Method: SW6020A, Run Date: 04/23/25 14:01, Analyst: JRH Parameter Result RL MDL Units Dilution CAS# Flags Lead 25.7 0.30 0.0061 mg/kg 278 7439-92-1 Report to Tetra Tech Project: Monitoring Page 7 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report Lab Sample ID: S73672.03 Sample Tag: HE-03-SO-0-0.5-20250411-DUP Collected Date/Time: 04/11/2025 12:45 Matrix: Soil COC Reference: 189319 Sample Containers # Type Preservative(s) Refrigerated? Arrival Temp. Thermometer # 1 4oz Glass None No 16.9 IR Extraction / Prep. Parameter Result Method Run Date Analyst Flags Metal Digestion Completed SW3050B 04/23/25 11:30 JRH Inorganics Method: SM2540B, Run Date: 04/22/25 13:42, Analyst: MAM Parameter Result RL MDL Units Dilution CAS# Flags Total Solids* 90 1 % 1 Metals Method: SW6020A, Run Date: 04/23/25 14:02, Analyst: JRH Parameter Result RL MDL Units Dilution CAS# Flags Lead 22.4 0.30 0.0059 mg/kg 270 7439-92-1 Report to Tetra Tech Project: Monitoring Page 8 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report Lab Sample ID: S73672.04 Sample Tag: HE-04-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 13:00 Matrix: Soil COC Reference: 189319 Sample Containers # Type Preservative(s) Refrigerated? Arrival Temp. Thermometer # 1 4oz Glass None No 16.9 IR Extraction / Prep. Parameter Result Method Run Date Analyst Flags Metal Digestion Completed SW3050B 04/23/25 11:30 JRH Inorganics Method: SM2540B, Run Date: 04/22/25 13:42, Analyst: MAM Parameter Result RL MDL Units Dilution CAS# Flags Total Solids* 84 1 % 1 Metals Method: SW6020A, Run Date: 04/23/25 14:04, Analyst: JRH Parameter Result RL MDL Units Dilution CAS# Flags Lead 30.6 0.30 0.0058 mg/kg 262 7439-92-1 Report to Tetra Tech Project: Monitoring Page 9 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report Lab Sample ID: S73672.05 Sample Tag: HE-05-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 13:15 Matrix: Soil COC Reference: 189319 Sample Containers # Type Preservative(s) Refrigerated? Arrival Temp. Thermometer # 1 4oz Glass None No 16.9 IR Extraction / Prep. Parameter Result Method Run Date Analyst Flags Metal Digestion Completed SW3050B 04/23/25 11:30 JRH Inorganics Method: SM2540B, Run Date: 04/22/25 13:42, Analyst: MAM Parameter Result RL MDL Units Dilution CAS# Flags Total Solids* 84 1 % 1 Metals Method: SW6020A, Run Date: 04/23/25 14:05, Analyst: JRH Parameter Result RL MDL Units Dilution CAS# Flags Lead 50.4 0.30 0.0065 mg/kg 295 7439-92-1 Report to Tetra Tech Project: Monitoring Page 10 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report Lab Sample ID: S73672.06 Sample Tag: HE-06-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 13:30 Matrix: Soil COC Reference: 189319 Sample Containers # Type Preservative(s) Refrigerated? Arrival Temp. Thermometer # 1 4oz Glass None No 16.9 IR Extraction / Prep. Parameter Result Method Run Date Analyst Flags Metal Digestion Completed SW3050B 04/23/25 14:30 JRH Inorganics Method: SM2540B, Run Date: 04/22/25 13:42, Analyst: MAM Parameter Result RL MDL Units Dilution CAS# Flags Total Solids* 83 1 % 1 Metals Method: SW6020A, Run Date: 04/23/25 15:05, Analyst: JRH Parameter Result RL MDL Units Dilution CAS# Flags Lead 27.4 0.30 0.0058 mg/kg 262 7439-92-1 Report to Tetra Tech Project: Monitoring Page 11 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report Lab Sample ID: S73672.07 Sample Tag: IT-01-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 11:15 Matrix: Soil COC Reference: 189319 Sample Containers # Type Preservative(s) Refrigerated? Arrival Temp. Thermometer # 1 4oz Glass None No 16.9 IR Extraction / Prep. Parameter Result Method Run Date Analyst Flags Metal Digestion Completed SW3050B 04/23/25 14:30 JRH Inorganics Method: SM2540B, Run Date: 04/22/25 13:42, Analyst: MAM Parameter Result RL MDL Units Dilution CAS# Flags Total Solids* 84 1 % 1 Metals Method: SW6020A, Run Date: 04/23/25 15:07, Analyst: JRH Parameter Result RL MDL Units Dilution CAS# Flags Lead 123 0.30 0.0056 mg/kg 255 7439-92-1 Report to Tetra Tech Project: Monitoring Page 12 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report Lab Sample ID: S73672.08 Sample Tag: IT-03-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 11:30 Matrix: Soil COC Reference: 189319 Sample Containers # Type Preservative(s) Refrigerated? Arrival Temp. Thermometer # 1 4oz Glass None No 16.9 IR Extraction / Prep. Parameter Result Method Run Date Analyst Flags Metal Digestion Completed SW3050B 04/23/25 14:30 JRH Inorganics Method: SM2540B, Run Date: 04/22/25 13:42, Analyst: MAM Parameter Result RL MDL Units Dilution CAS# Flags Total Solids* 87 1 % 1 Metals Method: SW6020A, Run Date: 04/23/25 15:08, Analyst: JRH Parameter Result RL MDL Units Dilution CAS# Flags Lead 204 0.30 0.0055 mg/kg 248 7439-92-1 Report to Tetra Tech Project: Monitoring Page 13 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Analytical Laboratory Report Lab Sample ID: S73672.09 Sample Tag: IT-04-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 11:45 Matrix: Soil COC Reference: 189319 Sample Containers # Type Preservative(s) Refrigerated? Arrival Temp. Thermometer # 1 4oz Glass None No 16.9 IR Extraction / Prep. Parameter Result Method Run Date Analyst Flags Metal Digestion Completed SW3050B 04/23/25 14:30 JRH Inorganics Method: SM2540B, Run Date: 04/22/25 13:42, Analyst: MAM Parameter Result RL MDL Units Dilution CAS# Flags Total Solids* 83 1 % 1 Metals Method: SW6020A, Run Date: 04/23/25 15:09, Analyst: JRH Parameter Result RL MDL Units Dilution CAS# Flags Lead 307 0.30 0.0057 mg/kg 258 7439-92-1 Report to Tetra Tech Project: Monitoring Page 14 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Quality Control Report Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 Report to Report Produced by Attention: Brandon Kingsbury Merit Laboratories Tetra Tech 2680 East Lansing Drive 1560 Broadway, Ste. 1400 East Lansing, MI 48823 Denver, CO 80202 Phone: (517) 332-0167 FAX: (517) 332-6333 Phone: [PHONE REDACTED] FAX: Report Summary Lab Sample ID(s): S73672.01-S73672.09 Project: Monitoring Submitted Date/Time: 04/21/2025 08:40 Sampled by: Brandon Kingsbury P.O. 1188792 QC Report Sections Cover Page (Page 15) Analysis Summary (Pages 16-24) Prep Batch Summary (Page 25) Batch QC Results (Pages 26-28) Report Flag Descriptions QC result is outside of indicated control limits W: Surrogate result not applicable due to sample dilution I certify that this data package is in compliance with the terms and conditions of the program, and project, and contractual requirements both technically and for completeness. Release of the data contained in this hardcopy data package and its computer-readable data submitted has been authorized by the Quality Assurance Manager and his/her designee, as verified by the following signature. Barbara Ball Quality Assurance Manager Report to Tetra Tech Project: Monitoring Page 15 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Analysis Summary Lab Sample ID: S73672.01 Sample Tag: HE-02-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 12:30 Matrix: Soil COC Reference: 189319 Analysis Prep ID Method QC Types Surr Run Date/Time Batch ID Inorganics Total Solids TS250422A SM2540B BLK/LCS/DUP No 04/22/25 13:42 TS250422A Metals Lead MTD-042325-4 SW6020A BLK/LCS/MS/MSD No 04/23/25 13:46 MT5-25-0423A Report to Tetra Tech Project: Monitoring Page 16 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Analysis Summary Lab Sample ID: S73672.02 Sample Tag: HE-03-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 12:45 Matrix: Soil COC Reference: 189319 Analysis Prep ID Method QC Types Surr Run Date/Time Batch ID Inorganics Total Solids TS250422A SM2540B BLK/LCS/DUP No 04/22/25 13:42 TS250422A Metals Lead MTD-042325-4 SW6020A BLK/LCS/MS/MSD No 04/23/25 14:01 MT5-25-0423A Report to Tetra Tech Project: Monitoring Page 17 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Analysis Summary Lab Sample ID: S73672.03 Sample Tag: HE-03-SO-0-0.5-20250411-DUP Collected Date/Time: 04/11/2025 12:45 Matrix: Soil COC Reference: 189319 Analysis Prep ID Method QC Types Surr Run Date/Time Batch ID Inorganics Total Solids TS250422A SM2540B BLK/LCS/DUP No 04/22/25 13:42 TS250422A Metals Lead MTD-042325-4 SW6020A BLK/LCS/MS/MSD No 04/23/25 14:02 MT5-25-0423A Report to Tetra Tech Project: Monitoring Page 18 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Analysis Summary Lab Sample ID: S73672.04 Sample Tag: HE-04-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 13:00 Matrix: Soil COC Reference: 189319 Analysis Prep ID Method QC Types Surr Run Date/Time Batch ID Inorganics Total Solids TS250422A SM2540B BLK/LCS/DUP No 04/22/25 13:42 TS250422A Metals Lead MTD-042325-4 SW6020A BLK/LCS/MS/MSD No 04/23/25 14:04 MT5-25-0423A Report to Tetra Tech Project: Monitoring Page 19 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Analysis Summary Lab Sample ID: S73672.05 Sample Tag: HE-05-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 13:15 Matrix: Soil COC Reference: 189319 Analysis Prep ID Method QC Types Surr Run Date/Time Batch ID Inorganics Total Solids TS250422A SM2540B BLK/LCS/DUP No 04/22/25 13:42 TS250422A Metals Lead MTD-042325-4 SW6020A BLK/LCS/MS/MSD No 04/23/25 14:05 MT5-25-0423A Report to Tetra Tech Project: Monitoring Page 20 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Analysis Summary Lab Sample ID: S73672.06 Sample Tag: HE-06-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 13:30 Matrix: Soil COC Reference: 189319 Analysis Prep ID Method QC Types Surr Run Date/Time Batch ID Inorganics Total Solids TS250422A SM2540B BLK/LCS/DUP No 04/22/25 13:42 TS250422A Metals Lead MTD-042325-6 SW6020A BLK/LCS/MS/MSD No 04/23/25 15:05 MT5-25-0423A Report to Tetra Tech Project: Monitoring Page 21 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Analysis Summary Lab Sample ID: S73672.07 Sample Tag: IT-01-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 11:15 Matrix: Soil COC Reference: 189319 Analysis Prep ID Method QC Types Surr Run Date/Time Batch ID Inorganics Total Solids TS250422A SM2540B BLK/LCS/DUP No 04/22/25 13:42 TS250422A Metals Lead MTD-042325-6 SW6020A BLK/LCS/MS/MSD No 04/23/25 15:07 MT5-25-0423A Report to Tetra Tech Project: Monitoring Page 22 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Analysis Summary Lab Sample ID: S73672.08 Sample Tag: IT-03-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 11:30 Matrix: Soil COC Reference: 189319 Analysis Prep ID Method QC Types Surr Run Date/Time Batch ID Inorganics Total Solids TS250422A SM2540B BLK/LCS/DUP No 04/22/25 13:42 TS250422A Metals Lead MTD-042325-6 SW6020A BLK/LCS/MS/MSD No 04/23/25 15:08 MT5-25-0423A Report to Tetra Tech Project: Monitoring Page 23 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Analysis Summary Lab Sample ID: S73672.09 Sample Tag: IT-04-SO-0-0.5-20250411 Collected Date/Time: 04/11/2025 11:45 Matrix: Soil COC Reference: 189319 Analysis Prep ID Method QC Types Surr Run Date/Time Batch ID Inorganics Total Solids TS250422A SM2540B BLK/LCS/DUP No 04/22/25 13:42 TS250422A Metals Lead MTD-042325-6 SW6020A BLK/LCS/MS/MSD No 04/23/25 15:09 MT5-25-0423A Report to Tetra Tech Project: Monitoring Page 24 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Prep Batch Summary Inorganics, Prep Batch ID: TS250422A Surrogates: No, QC Types: BLK/LCS/DUP Sample ID Batch ID Analysis Method Run Date/Time S73672.01 TS250422A Total Solids SM2540B 04/22/25 13:42 S73672.02 TS250422A Total Solids SM2540B 04/22/25 13:42 S73672.03 TS250422A Total Solids SM2540B 04/22/25 13:42 S73672.04 TS250422A Total Solids SM2540B 04/22/25 13:42 S73672.05 TS250422A Total Solids SM2540B 04/22/25 13:42 S73672.06 TS250422A Total Solids SM2540B 04/22/25 13:42 S73672.07 TS250422A Total Solids SM2540B 04/22/25 13:42 S73672.08 TS250422A Total Solids SM2540B 04/22/25 13:42 S73672.09 TS250422A Total Solids SM2540B 04/22/25 13:42 Metals, Prep Batch ID: MTD-042325-4 Surrogates: No, QC Types: BLK/LCS/MS/MSD Sample ID Batch ID Analysis Method Run Date/Time S73672.01 MT5-25-0423A Lead SW6020A 04/23/25 13:46 S73672.02 MT5-25-0423A Lead SW6020A 04/23/25 14:01 S73672.03 MT5-25-0423A Lead SW6020A 04/23/25 14:02 S73672.04 MT5-25-0423A Lead SW6020A 04/23/25 14:04 S73672.05 MT5-25-0423A Lead SW6020A 04/23/25 14:05 Metals, Prep Batch ID: MTD-042325-6 Surrogates: No, QC Types: BLK/LCS/MS/MSD Sample ID Batch ID Analysis Method Run Date/Time S73672.06 MT5-25-0423A Lead SW6020A 04/23/25 15:05 S73672.07 MT5-25-0423A Lead SW6020A 04/23/25 15:07 S73672.08 MT5-25-0423A Lead SW6020A 04/23/25 15:08 S73672.09 MT5-25-0423A Lead SW6020A 04/23/25 15:09 Report to Tetra Tech Project: Monitoring Page 25 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Batch QC Results Inorganics, Prep Batch ID: TS250422A Surrogates: No, QC Types: BLK/LCS/DUP Blank (BLK) Lab Sample ID: TS250422A.LRB1 Run in Batch: TS250422A, Run Date: 04/22/2025 13:42, Prep Date: 04/22/2025, Matrix: Liquid, Dilution: 1 Analyte Units RDL Conc Flags Total Solids % 1 ND Laboratory Control Sample (LCS) Lab Sample ID: TS250422A.LCS1 Run in Batch: TS250422A, Run Date: 04/22/2025 13:42, Prep Date: 04/22/2025, Matrix: Liquid, Dilution: 1 Analyte UCL LCL % Rec Flags Total Solids 110 90 100 Duplicate (DUP) Lab Sample ID: TS250422A.DP1, Parent Sample ID: S73671.02 Run in Batch: TS250422A, Run Date: 04/22/2025 13:42, Prep Date: 04/22/2025, Matrix: Soil, Dilution: 1 Analyte RPD CL RPD Flags Total Solids 5 1 Duplicate (DUP) Lab Sample ID: TS250422A.DP2, Parent Sample ID: S73672.08 Run in Batch: TS250422A, Run Date: 04/22/2025 13:42, Prep Date: 04/22/2025, Matrix: Soil, Dilution: 1 Analyte RPD CL RPD Flags Total Solids 5 0 Report to Tetra Tech Project: Monitoring Page 26 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Batch QC Results Metals, Prep Batch ID: MTD-042325-4 Surrogates: No, QC Types: BLK/LCS/MS/MSD Blank (BLK) Lab Sample ID: MT5-25-0423A.055.LRB Run in Batch: MT5-25-0423A, Run Date: 04/23/2025 13:31, Prep Date: 04/23/2025, Matrix: Liquid, Dilution: 1 Analyte Units RDL Conc Flags Lead mg/L 0.0006 ND Laboratory Control Sample (LCS) Lab Sample ID: MT5-25-0423A.054.LCS Run in Batch: MT5-25-0423A, Run Date: 04/23/2025 13:30, Prep Date: 04/23/2025, Matrix: Liquid, Dilution: 1 Analyte UCL LCL % Rec Flags Lead 115 85 101 Matrix Spike (MS) Lab Sample ID: MT5-25-0423A.067.MS, Parent Sample ID: S73672.01 Run in Batch: MT5-25-0423A, Run Date: 04/23/2025 13:47, Prep Date: 04/23/2025, Matrix: Soil, Dilution: 263 Analyte UCL LCL % Rec Flags Lead 125 75 100 Matrix Spike Duplicate (MSD) Lab Sample ID: MT5-25-0423A.068.MSD, Parent Sample ID: MT5-25-0423A.067.MS Run in Batch: MT5-25-0423A, Run Date: 04/23/2025 13:49, Prep Date: 04/23/2025, Matrix: Soil, Dilution: 263 Analyte RPD CL RPD UCL LCL % Rec Flags Lead 20 14 125 75 76 Report to Tetra Tech Project: Monitoring Page 27 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- QC Report - Batch QC Results Metals, Prep Batch ID: MTD-042325-6 Surrogates: No, QC Types: BLK/LCS/MS/MSD Blank (BLK) Lab Sample ID: MT5-25-0423A.101.LRB Run in Batch: MT5-25-0423A, Run Date: 04/23/2025 15:00, Prep Date: 04/23/2025, Matrix: Liquid, Dilution: 1 Analyte Units RDL Conc Flags Lead mg/L 0.0006 ND Laboratory Control Sample (LCS) Lab Sample ID: MT5-25-0423A.100.LCS Run in Batch: MT5-25-0423A, Run Date: 04/23/2025 14:59, Prep Date: 04/23/2025, Matrix: Liquid, Dilution: 1 Analyte UCL LCL % Rec Flags Lead 115 85 101 Matrix Spike (MS) Lab Sample ID: MT5-25-0423A.113.MS, Parent Sample ID: S73686.01 Run in Batch: MT5-25-0423A, Run Date: 04/23/2025 15:19, Prep Date: 04/23/2025, Matrix: Soil, Dilution: 245 Analyte UCL LCL % Rec Flags Lead 125 75 45 * Matrix Spike (MS) Lab Sample ID: MT5-25-0423A.115.MS, Parent Sample ID: S73686.01 Run in Batch: MT5-25-0423A, Run Date: 04/23/2025 15:24, Prep Date: 04/23/2025, Matrix: Soil, Dilution: 249 Analyte UCL LCL % Rec Flags Lead 125 75 97 Matrix Spike Duplicate (MSD) Lab Sample ID: MT5-25-0423A.114.MSD, Parent Sample ID: MT5-25-0423A.113.MS Run in Batch: MT5-25-0423A, Run Date: 04/23/2025 15:20, Prep Date: 04/23/2025, Matrix: Soil, Dilution: 247 Analyte RPD CL RPD UCL LCL % Rec Flags Lead 20 4 125 75 51 * Report to Tetra Tech Project: Monitoring Page 28 of 28 Report ID: S73672.01(01)+QC01 Generated on 04/23/2025 ---PAGE BREAK--- Merit Laboratories Login Checklist Login User: Lab Set ID: Project: S73672 Monitoring JEH Attention:Brandon Kingsbury Address: Tetra Tech 1560 Broadway, Ste. 1400 Denver, CO 80202 Phone: [PHONE REDACTED] FAX: Email:[EMAIL REDACTED] Note Description Client:TETRA01 (Tetra Tech) Selection Submitted:04/21/2025 08:40 Sample Receiving Samples are received at 4C 2C Thermometer # IR: 16.9C Yes No N/A X 01. Received on ice/ cooling process begun Yes No N/A X 02. Samples shipped FedEx Yes No N/A X 03. Samples left in 24 hr. drop box Yes No N/A X 04. Are there custody seals/tape or is the drop box locked Yes No N/A X 05. Chain of Custody COC adequately filled out Yes No N/A X 06. COC signed and relinquished to the lab Yes No N/A X 07. Sample tag on bottles match COC Yes No N/A X 08. Subcontracting needed? Subcontacted to: Yes No N/A X 09. Preservation Do sample have correct chemical preservation Yes No N/A X 10. Completed pH checks on preserved samples? (no VOAs) Yes No N/A X 11. Did any samples need to be preserved in the lab? Yes No N/A X 12. Bottle Conditions All bottles intact Yes No N/A X 13. Appropriate analytical bottles are used Yes No N/A X 14. Merit bottles used Yes No N/A X 15. Sufficient sample volume received Yes No N/A X 16. Samples require laboratory filtration Yes No N/A X 17. Samples submitted within holding time Yes No N/A X 18. Do water VOC, TOX, DO or Alkalinity bottles contain Yes No N/A X 19. Corrective action for all exceptions is to call the client and to notify the project manager. Client Review By: Date: Page 1 of 1 Prepared by Merit Laboratories ---PAGE BREAK--- ---PAGE BREAK--- Tetra Tech, Inc. 1560 Broadway, Suite 1400, Denver, CO 80202 Tel [PHONE REDACTED] www.tetratech.com July 2, 2025 Brandon Kingsbury Tetra Tech Project Manager 825 West Custer Ave. Helena, MT 59602 Subject: Data Validation Report Heck and Quaw Elementary Schools EPA Contract No.: 68HE0820D0001 Task Order/Technical Direction No.: 68HE0823F0060/2360-2506-04 Document Tracking No. 2090 Dear Mr. Kingsbury: Tetra Tech, Inc. (Tetra Tech) is submitting this data validation report for 472 asbestos samples and 9 soil samples soil samples (including 1 field duplicate) collected at the Heck and Quaw Elementary Schools site. The samples were collected on April 11, April 28, and April 29, 2025 and analyzed for asbestos by Eurofins Built Environment Testing West, LLC in Tustin, CA, and total and precipitation leaching procedure (SPLP) lead by Merit Laboratories, Inc. in East Lansing, MI. The final revised laboratory data package was received on May 28, 2025. Analytical data were evaluated in general accordance with the Tetra Tech Programmatic Quality Assurance Project Plan (QAPP) for EPA Region 8 START V Brownfields Task Order, Superfund Technical Assessment and Response Team (START EPA Region 8, Revision 6 (October 2024), the EPA PLM Validation Process Guidelines for Asbestos Data Review (October 2016), and the EPA National Functional Guidelines (NFG) for Inorganic Superfund Methods Data Review (November 2020). No rejection or qualification of results was required for this data package. The results may be used as reported by the laboratory. Please contact me if you have any questions regarding this data validation report. Sincerely, Environmental Chemist ---PAGE BREAK--- Enclosure cc: Tom Wohlford, Tetra Tech Program Manager Clayton Longest, Tetra Tech Project Document Control Coordinator TO/TD File ---PAGE BREAK--- ATTACHMENT DATA VALIDATION REPORT EUROFINS BUILT ENVIRONMENT TESTING WEST, LLC REPORT NO. 4066845, AND MERIT LABORATORIES, INC. REPORT NO. S73672.01(02)+QC02 ---PAGE BREAK--- Stage 1 Data Verification Checklist Heck and Quaw Elementary Schools – Asbestos 68HE0823F0060/2360-2506-04 Reviewed by: Kierra Johnson June 25, 2025 Laboratory: Eurofins Built Environment Testing West, LLC – Tustin, CA Report No: 4066845 √ 1. Chain of custody (CoC) documentation is present. √ 2. Sample receipt condition information is present and acceptable. √ 3. Laboratory conducting the analysis is identified. √ 4. All samples submitted to the laboratory are accounted for. √ 5. Requested analytical methods were performed. √ 6. Analysis dates are provided. √ 7. Analyte results are provided. √ 8. Result qualifiers and definitions are provided. √ 9. Result units are reported. √ 10. Requested reporting limits are present. √ 11. Method detection limits are present. X 12. Sample collection date and time are present. Discrepancies: 12. Sample date range provided. Individual sample date and times were not indicated. No action was necessary for this circumstance. Notes: 5. Point count analysis was requested for samples HQ-Heck-VFT01-A, HQ-Heck-VSF01-A, HQ- Heck-CBM07-A, HQ-Heck-CBM07-C, HQ-Heck-CBM08-C, HQ-Heck-WB03-A , HQ-Heck- WB03-C via email, by Amelia Byl on May 21, 2025. There was insufficient material for sample HQ-Heck-VSF01-A; therefore, point count analysis was not performed. ---PAGE BREAK--- Stage 1 Data Verification Checklist Heck and Quaw Elementary Schools – Total Lead and Precipitation Leaching Procedure (SPLP) Lead 68HE0823F0060/2360-2506-04 Reviewed by: Kierra Johnson June 24, 2025 Laboratory: Merit Laboratories, Inc. – East Lansing, MI Report No: S73672.01(02)+QC02 √ 1. Chain of custody (CoC) documentation is present. √ 2. Sample receipt condition information is present and acceptable. √ 3. Laboratory conducting the analysis is identified. √ 4. All samples submitted to the laboratory are accounted for. √ 5. Requested analytical methods were performed. √ 6. Analysis dates are provided. √ 7. Analyte results are provided. √ 8. Result qualifiers and definitions are provided. √ 9. Result units are reported. √ 10. Requested reporting limits are present. √ 11. Method detection limits are present. √ 12. Sample collection date and time are present. Discrepancies: None Notes: 2. Field mixed composites were used for total lead in soil. 5. The report was revised on May 27, 2024, to include precipitation leaching procedure (SPLP) results. SPLP was ordered if the initial total lead results exceeded 140 mg/kg. SPLP was ordered for samples IT-01-SO-0-0.5-20250411, IT-03-SO-0-0.5-20250411, and IT-04-SO-0-0.5- 20250411. ---PAGE BREAK--- HECK AND QUAW ELEMENTARY SCHOOLS SOIL ANALYTICAL RESULTS SUMMARY ALS ENVIRONMENTAL REPORT NO. S73672.01(02)+QC02 Field Sample ID Method CAS# Analyte Lab Result Lab Qual MDL RL Units Val Result Val Qual HE-02-SO-0-0.5-20250411 SW6020A 7439-92-1 Lead 22.2 0.0058 0.30 mg/kg 22.2 HE-03-SO-0-0.5-20250411 SW6020A 7439-92-1 Lead 25.7 0.0061 0.30 mg/kg 25.7 HE-03-SO-0-0.5-20250411-DUP SW6020A 7439-92-1 Lead 22.4 0.0059 0.30 mg/kg 22.4 HE-04-SO-0-0.5-20250411 SW6020A 7439-92-1 Lead 30.6 0.0058 0.30 mg/kg 30.6 HE-05-SO-0-0.5-20250411 SW6020A 7439-92-1 Lead 50.4 0.0065 0.30 mg/kg 50.4 HE-06-SO-0-0.5-20250411 SW6020A 7439-92-1 Lead 27.4 0.0058 0.30 mg/kg 27.4 IT-01-SO-0-0.5-20250411 SW6020A 7439-92-1 Lead 123 0.0056 0.30 mg/kg 123 IT-01-SO-0-0.5-20250411 SW6020AS 7439-92-1 Lead, SPLP 0.052 0.00045 0.0030 mg/l 0.052 IT-03-SO-0-0.5-20250411 SW6020A 7439-92-1 Lead 204 0.0055 0.30 mg/kg 204 IT-03-SO-0-0.5-20250411 SW6020AS 7439-92-1 Lead, SPLP 0.049 0.00045 0.0030 mg/l 0.049 IT-04-SO-0-0.5-20250411 SW6020A 7439-92-1 Lead 307 0.0057 0.30 mg/kg 307 IT-04-SO-0-0.5-20250411 SW6020AS 7439-92-1 Lead, SPLP 0.146 0.00045 0.0030 mg/l 0.146 Page 1 of 1