Document Moscow_doc_64d44979a5

Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho Prepared for: City of Moscow 206 E. 3rd Street Moscow, Idaho 83843 Prepared by: 121 S. Jackson St. Moscow, ID 83843 www.terragraphics.com January 27, 2016 ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho ii Table of Contents Executive Summary v Section 1.0 Introduction 1 Section 2.0 Background 1 2.1 Site-Use History 1 2.2 Summary of Previous Assessments 3 2.2.1 2007 Phase I ESA 3 2.2.2 2007 Asbestos Abatement 4 2.2.3 2012 Phase I ESA 4 2.2.4 April 2012 Phase II ESA 4 2.2.5 October 2012 Supplemental Phase II ESA 5 2.2.6 June and July 2013 Surface Soil Sampling (DUs 1 to 6) 6 Section 3.0 8 3.1 Sampling 8 3.2 Data Evaluation 8 Section 4.0 Surface Soil Sampling (DUs 7 to 10) 9 Section 5.0 Surface Soil Results and Discussion (DUs 7 to 10) 9 Section 7.0 Quality Control 13 Section 8.0 Risk Evaluation 13 8.1 Site Conceptual Model 13 8.1.1 Primary Source 13 8.1.2 Fate and Transport 13 8.1.3 Exposure Pathways 14 8.1.3.1 Direct Contact 14 8.1.3.2 Inhalation 14 8.2 Risk-Evaluation-1 14 8.2.1 DM-1: Single ISM Sample from DU-9 14 8.2.2 DM-2: Mean Concentration from DU-9 15 8.2.3 DM-3: 95% UCL Concentration from DU-9 15 Section 9.0 Conclusions and Recommendations 15 Section 10.0 References and Resources Used 16 ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho iii List of Figures Figure 1. Site Location Map 2 Figure 2. Sampling Locations and Decision Units [2012 and 2013] 7 Figure 3. Dumas Seed Additional Sampling Locations and Decision Units [2015] 10 List of Tables Table 1. Surface Soil 2013 and 2015 Dieldrin Analytical Results 11 Table 2. Surface Soil 2013 and 2015 Dieldrin Analytical Results and Summary Statistics 12 Appendices Appendix A QA/QC Memorandum (Includes Laboratory Report) A Appendix B RE-1 Risk Information B ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho iv Acronyms and Abbreviations cm centimeter COC contaminant of concern CV coefficient of variation DM Decision Mechanism DU Decision Unit EDB ethylene dibromide ESA Environmental Site Assessment HI hazard index HQ hazard quotient IDEQ Idaho Department of Environmental Quality IDTL Initial Default Target Level IELCR individual excess lifetime cancer risk ISM Incremental Sampling Methodology mg/kg milligrams per kilogram PAH aromatic hydrocarbon PQL practical quantitation limit QAPP Quality Assurance Project Plan QA/QC quality assurance/quality control RATL Remedial Action Target Level RCRA Resource Conservation and Recovery Act RE Risk Evaluation REC recognized environmental condition RPD relative percent difference RSD relative standard deviation RSL Regional Screening Level SCM Site Conceptual Model SU Sample Unit SVOC semi-volatile organic compound TerraGraphics TerraGraphics Environmental Engineering, Inc. Tetra Tech Tetra Tech, Inc. UCL upper confidence limit USEPA US Environmental Protection Agency UST underground storage tank VOC volatile organic compound ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho v Executive Summary The Dumas Seed Facility (herein referred to as the “Site”) is located at 103 North Almon Street in Moscow, Idaho. The Site was used as a grain, pea, and lentil processing and storage facility that had operated for at least 100 years. Pesticides, rodenticides, fumigants, and possibly fungicides may have been repeatedly applied to the structures on the Site and around the exteriors of the Site structures (TerraGraphics 2007; Tetra Tech 2012). Through the US Environmental Protection Agency (USEPA) Brownfields Assessment Coalition Grant held by the City of Moscow, Tetra Tech, Inc. (Tetra Tech) performed a Phase I Environmental Site Assessment (ESA) in February 2012. Based on recognized environmental conditions (RECs), Tetra Tech conducted Phase II ESA sampling activities in April and October 2012 to confirm or negate the presence of pesticides and herbicides and identified dieldrin as a contaminant of concern (COC) on the subject property. In consideration of Tetra Tech’s results, the City requested additional surface soil sampling of the north portion of the Site. TerraGraphics Environmental Engineering, Inc. (TerraGraphics) conducted a sampling event in June and July 2013 at six decision units (DUs). The sampling and laboratory analyses identified dieldrin concentrations above the USEPA residential regional screening level (RSL) at DU-4 and DU-5. TerraGraphics conducted a Risk Evaluation on dieldrin concentrations from these DUs using the Idaho Department of Environmental Quality’s (IDEQ) Risk Evaluation Manual (REM) model. Modeling results show dieldrin concentrations exceed the acceptable risk for the residential (child and age-adjusted) receptors at DU-4; however, model results show that dieldrin risk concentrations were acceptable for the non- residential and construction worker receptors. Modeling results for DU-5 indicate acceptable risk for residential, non-residential, and construction worker receptors. The non-cancer risk for all receptors at both DUs was not exceeded using any calculated concentrations. Based on the risk evaluation results for DU-4, TerraGraphics recommended selecting one of the following options for reducing potential risk at DU-4:  Limit the Site to industrial use through a deed restriction.  Implement institutional controls barriers) to break the dermal and ingestion pathway.  Remove and dispose of contaminated surface soils from within DU-4. In 2015, many of the buildings located in the northwest area of the site were dismantled. The City of Moscow requested surface soil sampling in the areas previously occupied by the buildings. TerraGraphics collected surface soils from four DUs (7 through 10) in December 2015. Dieldrin concentrations in at least one sample from each DU exceeded the USEPA residential RSL. A risk evaluation using IDEQ’s REM on results from DU-9, which had the highest concentrations of the four DUs, indicates acceptable risk for residential, non-residential, and construction worker receptors (less than 1.0x10-5). The non-cancer risk (1.0) for all receptors was not exceeded using any calculated concentrations. The data suggest no further action is necessary on DUs 7 to 10. TerraGraphics re-iterates the recommendation options stated above to reduce potential risk at DU-4. ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho 1 Section 1.0 Introduction The Dumas Seed Facility (herein referred to as the Site) is a former grain, pea, and lentil processing and storage facility, located at 103 North Almon Street in Moscow, Idaho (Figure Several previous environmental site assessments (ESAs) have been conducted at the Site. One of the ESAs revealed an area along the historical railroad corridor, running southwest-northeast through the middle of the Site, had concentrations of dieldrin in the surface soil that exceeded screening and risk levels. Recently, several of the Site buildings have been dismantled. To investigate dieldrin concentrations in surface soil under the footprint of the dismantled buildings, the City of Moscow contracted with TerraGraphics under the U.S. Environmental Protection Agency (USEPA) Brownfields Assessment Coalition Grant (for hazardous substances contamination and petroleum contamination), awarded to the City of Moscow in 2010. This report documents the surface soil sampling results from December 2015. Section 2.0 Background This section describes the site-use history and provides a summary of previous assessments. 2.1 Site-Use History The Site was used as a grain, pea, and lentil processing and storage facility that had operated for at least 100 years (Tetra Tech 2012). Pesticides, rodenticides, fumigants, and possibly fungicides may have been repeatedly applied to the structures on the Site and around the exteriors of the Site structures. The Site previously included a railroad branch line that terminated near the corner of North Almon and West A Streets. This spur was used at least occasionally into the early twenty-first century before being decommissioned and dismantled. The Site had at least one, and possibly two, underground storage tanks (USTs). One UST that contained gasoline was reportedly removed in the 1990s. The other possible on-site UST potentially held heating fuel oil. It is unknown whether that tank was removed but it may have serviced the Scale House with oil for a heating system. At the time of the 2012 Phase I ESA (completed by Tetra Tech, Inc. [Tetra Tech]), there was no heating system for the Scale House other than a kerosene space heater. The Site also contained a large warehouse. The warehouse was a four-story, wood post and beam structure with a corrugated metal exterior and was located on the northern and northwestern portions of the Site. In 2012, the building was mostly intact, with dismantling activities taking place on the top floor. The warehouse was reportedly used for sorting and screening pea and lentil products and included many transfer chutes and scoop-type conveyor belts. The structure also included an electrically-powered lift/elevator. A covered load-out drive-through for farm trucks was located on the northwestern side of the warehouse structure. Concrete ramps for the drive-through were present on West A Street and on North Asbury Street. ---PAGE BREAK--- 15146-03 ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho 3 While completing the Phase I ESA of the Site in February 2012, Tetra Tech noted that several Site buildings were being dismantled in order to salvage the wood and recycle metal used to construct those structures. Salvaged lumber and beams were stacked in eastern portions of the Site at the time of the site visit, while wood and metal demolition debris was present on the southern and central portions of the Site. 2.2 Summary of Previous Assessments Several previous ESAs have been conducted at the Site. A summary list of environmental assessments at the Site is as follows: 1. June 2007 – Conducted Phase I ESA. 2. September 2007 – Conducted asbestos abatement of the Site structures. 3. February 2012 – Conducted Phase I ESA. 4. April 2012 – Conducted Phase II ESA. Collected surface soil samples, advanced borings and collected subsurface soil samples, installed monitoring wells, and sampled groundwater. 5. October 2012 – Conducted supplemental Phase II ESA. Divided the Site into three decision units (DUs): north DU (NDU), south DU (SDU), railroad line DU (RDU). Conducted surface soil sampling. 6. June/July 2013 – Conducted supplemental Phase II ESA. Divided the NDU into six DUs: DUs 1 to 6 surrounding the structures. Conducted surface soil sampling. 7. December 2015 – Conducted supplemental Phase II ESA. Divided the NDU into four more DUs: 7 to 10 under the dismantled buildings. Conducted surface soil sampling. This section describes the first six assessments. 2.2.1 2007 Phase I ESA In June 2007, TerraGraphics conducted a Phase I ESA and produced a report entitled Phase I Environmental Site Assessment Report, 109 North Almon Street, Moscow, Idaho 83843 (TerraGraphics 2007). The Site may have both 103 and 109 N. Main addresses. TerraGraphics identified the following recognized environmental conditions (RECs):  The presence of oil stains on the second floor and main floor of the processing mill, as well as in the boiler room.  The presence of several unlabeled and labeled 5-gallon, 30-gallon, and 55-gallon drums containing insecticides, wood coatings (polyurethane and paint), lubricants, and oils throughout the processing and farm store building, as well as inadequate spill containment for these containers.  The presence of mold in the basement of the processing mill.  The potential for asbestos in building materials throughout the entire subject property.  The potential for lead-based paint on all the buildings throughout the Site.  Historical use of fumigants and /or pesticides (pre-1974) for pest control in pea and grain storage areas. ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho 4  High potential for radon inside the buildings based on the USEPA classification for Latah County.  A removal report noted a previous UST used to store automobile fuel, but reportedly no soil samples were obtained at the time of tank removal. 2.2.2 2007 Asbestos Abatement IRS Environmental performed an asbestos abatement of the structures on the Site in September 2007. IRS Environmental disposed of the asbestos-containing material at a USEPA-approved facility. Air sample clearance results were less than 0.01 fibers per cubic centimeter (IRS Environmental 2007). Based on the results, the buildings were cleared for demolition work. 2.2.3 2012 Phase I ESA Tetra Tech conducted a Phase I ESA at the Site in February 2012 through the USEPA Brownfields Assessment Coalition Grant held by the City of Moscow. Tetra Tech identified the following RECs (Tetra Tech 2012):  The Site had been used as a grain, pea, and lentil processing and storage facility for at least 100 years. Over this time pesticides, rodenticides, fumigants, and possibly fungicides were repeatedly applied to the structures on the Site and around the exteriors of the Site structures. Metals-based pesticides, organochlorine pesticides, and organophosphate pesticides are considered RECs for soil at the Site.  A UST for automotive fuel was located in the general vicinity of the Scale House structure. This UST was reportedly removed in the 1990s. No records were found to indicate if any contamination was associated with the gasoline UST. Also, Idaho Department of Environmental Quality (IDEQ) records indicated two USTs at the Site but it was unclear as to whether the second UST had been removed. In the absence of data to the contrary, the potential for residual petroleum contamination in the subsurface of the Site in the area of the former UST(s) is considered to represent a REC in connection with the Site.  The residual containers of pesticides, fumigants, petroleum lubricants, and other materials left at the Site by previous owner/operators are considered to represent RECs in connection with the Site. Tetra Tech recommended a Phase II ESA to obtain more information about the Site and removal of chemical containers. 2.2.4 April 2012 Phase II ESA Containers of pesticides, fumigants, and petroleum lubricants, and other containers with residual products were removed by a contractor hired by ReHistoric prior to the Phase II ESA. Tetra Tech conducted a Phase II ESA at the Site in April 2012 (Tetra Tech 2013). Personnel collected surface soil samples, advanced borings and collected subsurface soil samples, installed monitoring wells, and sampled groundwater. Tetra Tech performed area-wide surface soil sampling from hand-excavated test pits for pesticides (including organochlorine- and organophosphate-based pesticides), herbicides, and ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho 5 “RCRA 8” (Resource Conservation and Recovery Act) metals and copper based on multiple previous applications of pesticides, rodenticides, fumigants, and possibly fungicides within and around the Site structures. Several metals and pesticides in most of the soil samples exceeded the Initial Default Target Levels (IDTLs; IDEQ 2004) and Remedial Action Target Levels (RATLs; IDEQ 2004). The surface soil sample locations that exhibited contaminant of concern (COC) concentrations exceeding IDTLs and RATLs were widespread and not located in one centralized portion of the Site. This may indicate widespread usage and/or redistribution of contaminants through site activities. Tetra Tech advanced five borings in the Scale House/UST area to evaluate potential petroleum hydrocarbon impacts associated with one or two former USTs at the Site. Six soil samples were collected from borings and tested for volatile organic compounds (VOCs), ethylene dibromide (EDB), aromatic hydrocarbons (PAHs), and lead. One sample had a lead concentration of 103.7 milligrams per kilogram (mg/kg), which is above the IDTL of 49.6 mg/kg (lead has no RATL through the Risk Evaluation Manual [REM; IDEQ 2004]). All other detected sample results (acetone, benzene, carbon disulfide, and semi-VOCs [SVOCs]) were below their respective IDTLs. Tetra Tech also advanced four borings at the monitoring well locations prior to well installation. Five soil samples were collected from three of the borings and analyzed for VOCs, EDB, PAHs, pesticides, herbicides, and RCRA 8 metals and copper. Laboratory results showed metal detections in several samples; arsenic and mercury were above regulatory standards in at least one sample. A small number of VOCs were detected in several soil samples; however, concentrations were only above the analytical method detection limit and did not exceed regulatory standards. Endrin ketone (pesticide) was also detected in one sample; there is no IDTL or RATL for this substance. Tetra Tech installed four groundwater monitoring wells. Groundwater samples were collected from each well and tested for VOCs, EDB, PAHs, pesticides, herbicides, and RCRA 8 metals and copper. Although several metals, naphthalene (PAH), Dalapon (herbicide), and Beta-BHC (pesticide) were detected in the groundwater samples, none had concentrations exceeding regulatory standards. 2.2.5 October 2012 Supplemental Phase II ESA Preliminary results of the April 2012 investigation indicated widespread distribution of several COCs across surface soil sampled from the 0- to 6-inch depth interval at the Site. Therefore, additional characterization and risk evaluation of site soil was deemed necessary to further evaluate potential risk. Tetra Tech divided the Site into three Decision Units (DUs) (shown on Figure 1) the warehouse building (north DU; NDU) 2) the mill building (south DU; SDU) 3) the railroad line (RDU) The RDU was split into a west and an east Sample Unit (SU) and the other two had only one SU each. The field crew collected samples from 0 to 1 foot in depth from each DU; the RDU also had samples collected from 1 to 2 feet in depth. Samples were submitted to the laboratory for analysis of herbicides, pesticides, RCRA 8 metals, and copper. ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho 6 Results from the October 2012 surface soil sampling indicated arsenic and lead were the predominant metals detected in the samples. Several samples exceeded the RATL of 0.279 mg/kg for arsenic and one sample exceeded the RATL of 49.6 mg/kg for lead. However, these concentrations did not exceed the background soil concentration for arsenic in the Spokane, Washington area (15 mg/kg; WDOE 1994) or the lead cleanup value established for USEPA Risk-based Screening Level for residential soil (400 mg/kg; USEPA 2012). All of the soil samples exhibited detectable concentrations of several pesticides, indicating widespread usage or redistribution through site activities. However, only the dieldrin concentration detected in the northern DU exceeded the RATL. Tetra Tech conducted an IDEQ REM Risk Evaluation for each DU with further evaluation of dieldrin in the north DU. Modeled results for the north DU show dieldrin exceeds the RATL of 0.15 mg/kg. 2.2.6 June and July 2013 Surface Soil Sampling (DUs 1 to 6) Results of the Tetra Tech investigation indicated dieldrin concentrations in the north DU exceed the action level. Therefore, additional surface soil characterization of that DU and risk evaluation using IDEQ’s REM of site soil data were deemed necessary to further define the area and to evaluate potential risk. TerraGraphics partitioned the north DU from Tetra Tech’s investigation into six smaller DUs based on the historical use, prominent site features of the property, or future use of the property. Sampling areas were focused around the perimeter of the warehouse. DUs 1 to 6 are shown on Figure 2. TerraGraphics overlaid a numbered grid on a map of each DU and used a random number generator (to support statistical significance and reduce bias) to identify 30 grid cell increments. These 30 increments comprised one SU sample. SU identification was conducted in triplicate so each DU would have three replicate samples in order to evaluate the sampling, preparation, and analytical process variability. Figure 2 shows the sample locations for each round of sampling. Certain areas of some of the DUs could not be sampled due to the creek and concreted areas. In June and July 2013, TerraGraphics completed the sampling in accordance with the Updated - Quality Assurance Project Plan (QAPP): Dumas Seed Facility, Moscow, Idaho Phase II Environmental Site Assessment (TerraGraphics 2013a). TerraGraphics collected surface soil samples following Incremental Sampling Methodology (ISM) Technical and Regulatory Guidance (ITRC 2012) and Draft Guidance on MULTI INCREMENT Soil Sampling (State of Alaska Department of Environmental Conservation 2009). TerraGraphics collected 18 ISM soil samples from 6 DUs (3 replicates from each DU). Samples were analyzed for dieldrin by USEPA method 8081B (USEPA 2007). Tables 1 and 2 list the dieldrin results from the surface soil samples compared to USEPA residential Regional Screening Level (RSL) and statistical summary results for DUs 1 to 5; DU-6 had all concentrations below the reporting limits. The previous report (TerraGraphics 2013b) incorrectly listed the IDEQ IDTL for dieldrin as 0.3 mg/kg instead of 0.00133 mg/kg. The IDTL is based on groundwater protection; however, dieldrin was not detected in the groundwater (Tetra Tech 2013). Therefore, the data are compared to the USEPA residential RSL of 0.034 mg/kg in this report. ---PAGE BREAK--- 15146-03 ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho 8 DUs 4 and 5 were the only areas to have dieldrin concentrations above the USEPA residential RSL. TerraGraphics conducted a Risk Evaluation (RE-1) on dieldrin concentrations from these DUs using IDEQ’s REM model. Modeling results show dieldrin concentrations exceeded the acceptable risk for the residential (child and age-adjusted) receptors at DU-4, although the risk concentrations were acceptable for the non-residential and construction worker receptors (Appendix The non-cancer risk for all receptors was not exceeded using any calculated concentrations. Modeling results for DU-5 indicated acceptable risk for residential, non- residential, and construction worker receptors (provided in Appendix B of this report). Based on the RE-1 results of DU-4, TerraGraphics recommended selecting one of the following options for reducing risk at DU-4:  Limit the Site to industrial use through a deed restriction.  Implement institutional controls barriers) to break the dermal and ingestion pathway.  Remove and dispose of contaminated surface soils from within DU-4. At the time of this report based on the information available, the soil from DU-4 remains at the site; the Site is continuing to undergo modification. Section 3.0 Methods 3.1 Sampling TerraGraphics completed the sampling event in accordance with the Updated QAPP (TerraGraphics 2013a) and the QAPP Addendum I (TerraGraphics 2015). TerraGraphics collected surface soil samples following Incremental Sampling Methodology (ISM) Technical and Regulatory Guidance (ITRC 2012) and Draft Guidance on MULTI INCREMENT Soil Sampling (State of Alaska Department of Environmental Conservation 2009). The objective of the ISM is to produce a reliable average estimate of the average COC concentration. 3.2 Data Evaluation A summary statistical evaluation of the ISM data is conducted by calculating the following:  Standard deviation – is the amount of variation from the average.  Mean – is the average of the three replicate samples.  Coefficient of variation (CV) or relative standard deviation (RSD) – is a measure of data dispersion or variability. The CV or RSD is the standard deviation divided by the mean.  95% upper confidence limit (UCL) of the COC (Student’s-t distribution) – is essentially “a measure of the confidence in the estimate of the ‘grand mean,’ or the overall mean of the individual means given by each replicate sample” (ITRC 2012, p. 73). The 95% UCL is calculated so that statistically, for 95 out of 100 means calculated for the sample population, the UCL will be greater than or equal to the population’s true mean. Non- detects are represented by the practical quantitation limit (PQL) in instances where DUs ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho 9 have a combination of detects and non-detects. Conservative mean values can be calculated despite high RSD values. There are several Decision Mechanisms (DMs) available to evaluate the surface soil analytical data (ITRC 2012). The following DMs fit the Site objectives and are evaluated for this Site:  DM-1: Single ISM sample is compared to USEPA residential RSL. This is useful when the concentration of the sample is well below or well above the RSL.  DM-2: The mean concentration of the replicates is calculated and compared to the RSL. The mean of the replicates is likely closer to the true mean of the DU in comparison to DM-1.  DM-3: The 95% UCL on the mean of replicate data from the DU is compared to the RSL. This DM minimizes potential errors from using only the average concentration (DM-2) if high heterogeneity exists. Section 4.0 Surface Soil Sampling (DUs 7 to 10) TerraGraphics divided the northwest area of the Site under the dismantled buildings into four DUs (DUs 7 to 10). TerraGraphics overlaid a numbered grid on a map of each DU and used a random number generator (to support statistical significance and reduce bias) to identify 30 grid cell increments. These 30 increments comprised one SU sample. SU identification was conducted in triplicate so each DU would have three replicate samples in order to evaluate the sampling, preparation, and analytical process variability. Each replicate sample had a unique set of SUs. Figure 3 shows the 2015 DUs and sample locations. The field crew collected 12 ISM soil samples from 4 DUs (3 replicates from each DU) plus an additional duplicate sample from DU-7 on December 17 and 18, 2015. The laboratory analyzed samples for dieldrin by USEPA method 8081B (USEPA 2007). Section 5.0 Surface Soil Results and Discussion (DUs 7 to 10) Table 1 lists the dieldrin results from the surface soil samples compared to the USEPA residential RSL. Table 2 lists the surface soil ISM analytical results and replicate sample data statistical summary calculations, also compared to the USEPA residential RSL. The CV values indicate a relatively high variability/dispersion; therefore, the 95% UCL values, which are elevated compared to the mean and individual concentrations to account for the uncertainty in such a small sample size, is a more conservative concentration to base decisions upon. Based on DM-1 (single sample result), dieldrin concentrations exceed the USEPA residential RSL at all DUs. Using DM-2 (replicate mean), dieldrin concentrations exceed the RSL only at DU-9. Using DM-3 (95% UCL), dieldrin concentrations exceed the RSL at all DUs. Given the RSL exceedances, TerraGraphics conducted a risk evaluation and is described in Section 7.0. ---PAGE BREAK--- ---PAGE BREAK--- Table 1. Surface Soil 2013 and 2015 Dieldrin Analytical Results Sample Date Decision Unit Sample Concentration (mg/kg) Data Qualifier DS-U1-1 <0.01 DS-U1-2 0.0116 DS-U1-3 0.0253 ISM2-W <0.01 ISM2-P 0.0172 ISM2-R 0.0103 ISM3-W 0.0117 ISM3-P 0.027 ISM3-R 0.0266 DS-U4-1 0.253 DS-U4-2 0.687 DS-U4-3 0.563 DS-U5-1 0.0807 DS-U5-2 0.108 DS-U5-3 0.154 ISM6-W <0.01 ISM6-P <0.01 ISM6-R <0.01 DS-U7-A 0.0104 DS-U7-B 0.0271 DS-U7-C 0.0504 DS-U8-A 0.0110 DS-U8-B 0.0717 DS-U8-C 0.0137 DS-U9-A 0.0291 DS-U9-B 0.112 DS-U9-C 0.180 DS-U10-A 0.00574 J DS-U10-B 0.0462 DS-U10-C 0.0121 0.034 Notes: 1Residential RSL (cumulative carcinogenic) Practical Quantitation Limit = 0.01 mg/kg mg/kg = milligrams per kilogram Bold values indicate concentration exceeds the RSL 6/7/2013 6/5/2013 6/5/2013 DU-8 DU-9 6/6/2013 DU-2 DU-3 DU-4 DU-5 DU-1 6/7/2013 J = the reported value is between the laboratory method detection limit and the laboratory practical quantitation limit 6/10/2013 12/17/2015 12/17/2015 12/18/2015 12/18/2015 DU-6 DU-7 DU-10 USEPA Regional Screening Level (RSL)1 (mg/kg) ---PAGE BREAK--- Decision Unit 1 2 3 Max Concentration Standard Deviation Mean CV or RSD (Percent) 95% UCL (student's-t distribution) DU-1 0.01* 0.0116 0.0253 0.0253 0.0084 0.0156 54 0.0298 DU-2 0.01* 0.0172 0.0103 0.0172 0.0041 0.0125 33 0.0194 DU-3 0.0117 0.0270 0.0266 0.0270 0.0087 0.0218 40 0.0365 DU-4 0.253 0.687 0.563 0.687 0.2235 0.501 45 0.878 DU-5 0.0807 0.108 0.154 0.154 0.0370 0.114 32 0.177 DU-6 0.0104 0.0271 0.0504 0.0504 0.0164 0.0293 56 0.0570 DU-7 0.011 0.0717 0.0137 0.0717 0.0280 0.0321 87 0.0793 DU-8 0.0291 0.112 0.180 0.180 0.0617 0.107 58 0.211 DU-9 0.00574 0.0462 0.0121 0.0462 0.0166 0.0228 73 0.0507 Sample 1 has a J qualifier Notes: All concentrations are in milligrams per kilogram (mg/kg) * PQL = Practical Quantitation Limit (0.01 mg/kg) because dieldrin not detected above the reporting limit J qualified - the reported value is between the laboratory method detection limit and the laboratory practical quantitation limit CV = coefficient of variation (standard deviation/mean*100) RSD = relative standard deviation UCL = upper confidence limit (mean + I where: σ=standard deviation; r=count or 3 (http://www.itrcweb.org/ism-1/4_2_2_UCL_Calculation_Method.html) Bold values indicate concentration exceeds the USEPA RSL of 0.034 mg/kg Replicate Sample Concentrations Comments Summary Statistics Table 2. Surface Soil 2013 and 2015 Dieldrin Analytical Results and Summary Statistics ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho 13 Section 7.0 Quality Control TerraGraphics considers the soil dataset from the December 2015 sampling event to be of acceptable quality based on results from the field and laboratory quality control (QC) samples. All laboratory control, matrix spike, matrix spike duplicate, and method blank samples are within the guidelines set forth in the QAPP Addendum 1 (TerraGraphics 2015). See Appendix A for the Quality Assurance/Quality Control (QA/QC) memorandum, which contains the laboratory report. Section 8.0 Risk Evaluation TerraGraphics conducted an initial Risk Evaluation for DU-9 to evaluate risk to residential, non- residential, and construction worker receptors because this DU showed the highest dieldrin concentrations of the four DUs investigated in December 2015. Appendix B contains the RE-1 model results for DU-9 and for those previously sampled DUs at the Site which showed higher dieldrin concentrations than the DUs sampled in 2015. As part of the Risk Evaluation a Site Conceptual Model (SCM) is developed. 8.1 Site Conceptual Model The SCM describes potential chemical sources, release mechanisms, environmental transport processes, exposure routes, and receptors at a location, property, or site. The purpose of the SCM is to describe the routes or pathways by which humans may be exposed to contaminants at the Site. Completed exposure pathways were evaluated as part of this Risk Evaluation. A complete exposure pathway consists of four necessary elements: i) a source and mechanism of chemical release to the environment, ii) an environmental transport medium for a released chemical, iii) a point of potential human contact with the impacted medium (referred to as the exposure point), and iv) an exposure route soil ingestion) at the exposure point. The SCM for the Site, based on information collected to date, is discussed in the sub-sections below. 8.1.1 Primary Source The majority of chemical impacts at the Site resulted from insecticide application to the Site structures and around the exteriors of the Site structures. To further characterize the Site dieldrin concentrations under the dismantled buildings, surface soil samples were collected from four DUs in December 2015 and analyzed for dieldrin. Dieldrin concentrations were above the USEPA residential RSL in at least one sample per DU. DU-9 had the highest concentrations. In DU-9, dieldrin was above the USEPA residential RSL in the maximum concentration of the three replicate samples, the mean concentration of the three replicate samples, and the 95% UCL concentration of the three replicate samples (following the three DMs presented in Section 3.2). 8.1.2 Fate and Transport Dieldrin may have been released from insecticide application during the time when the Site was used as a grain, pea, or lentil processing and storage facility. Dieldrin bioconcentrates and biomagnifies through the terrestrial and aquatic food chains. Transport of dieldrin in soils is ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho 14 minimal because this compound tends to bind to soil. Based on its physical properties, volatilization of dieldrin from soil surfaces is a relatively slow process due to its low vapor pressure and strong sorption to soil and is from moist soil surfaces (ATSDR 2011): Section 6.1; http://www.atsdr.cdc.gov/toxprofiles/tp.asp?id=317&tid=56. 8.1.3 Exposure Pathways 8.1.3.1 Direct Contact Laboratory results indicate that Site soils have been impacted by dieldrin; samples were collected from the top 6 inches of surface soil. In association with the demolition of on-site buildings, only the Construction Worker user scenario applies based on their direct contact with Site soils. However, potential future development activities may result in direct contact with subsurface soils by residential or commercial receptors. As a result, the direct contact soil exposure pathway is considered completed. 8.1.3.2 Inhalation Although dieldrin has a low volatility, it is possible that dieldrin vapors in Site soil could be stirred up and released during construction activities or that vapors could migrate into Site buildings. The Site is currently vacant, but any future occupational or commercial uses could result in completion of the indoor air inhalation pathway. 8.2 Risk-Evaluation-1 Based on initial screening level criteria exceedance for dieldrin in Site soil, an RE-1 was completed for DU-9. This RE-1 considers the residential, non-residential, and construction worker scenarios based on current and unknown future uses of the Site. Risk and hazard calculations for dieldrin in surface soil were completed using a standard set of risk equations provided by the REM software (IDEQ 2004). TerraGraphics ran the model for DU-9 using the highest concentration of the three sample replicates (DM-1), the mean concentration of the three samples (DM-2), and the 95% UCL concentration (DM-3). Generally in a risk evaluation, the combined exposure to all carcinogens and routes of exposure must have an individual excess lifetime cancer risk (IELCR) less than or equal to 1.0x10-5 (acceptable Risk) for a receptor at a reasonable maximum exposure. Additionally, the summation of hazard quotients (HQs) for all chemicals that have non-carcinogenic health effects and routes of exposure must be less than or equal to 1.0 (acceptable Hazard Index 8.2.1 DM-1: Single ISM Sample from DU-9 The maximum dieldrin concentration for the ISM from DU-9 that exceeded the USEPA residential RSL was entered into the model (0.180 mg/kg in sample DS-U9-C). Software default values were used for exposure factors, fate and transport parameters, and decay rates. Estimated risk for the residential receptor-child was 5.45x10-6 and estimated risk for the residential receptor-age adjusted was 8.07x10-6; both are within the acceptable risk level (1.0x10-5). Estimated risk for the non-residential receptor was 2.95x10-7 and estimated risk for the construction worker receptor was 3.76x10-8; both are below the acceptable risk level (1.0x10- ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho 15 Estimated non-cancer risk for the residential receptor-child was 0.0795 and the estimated non- cancer risk for the residential receptor-age adjusted was 0.0235. Additionally, estimated non- cancer risk for the non-residential receptor was 0.00391 and estimated non-cancer risk for the construction worker receptor was 0.00329. These HIs are below the acceptable non-cancer risk level 8.2.2 DM-2: Mean Concentration from DU-9 The mean dieldrin concentration from DU-9 was entered into the model (0.107 mg/kg). Software default values were used for exposure factors, fate and transport parameters, and decay rates. Estimated risk for the residential receptor-child was 3.24x10-6 and the estimated risk for the residential receptor-age adjusted was 4.80x10-6; both are within the acceptable risk level (1.0x10-5). Estimated risk for the non-residential receptor was 1.75x10-7 and estimated risk for the construction worker receptor was 2.23x10-8; both are below the acceptable risk level (1.0x10-5). Estimated non-cancer risk for the residential receptor-child was 0.0473 and the estimated non- cancer risk for the residential receptor-age adjusted was 0.0140. Additionally, estimated non- cancer risk for the non-residential receptor was 0.00232 and estimated non-cancer risk for the construction worker receptor was 0.00195. These HIs are below the acceptable non-cancer risk level 8.2.3 DM-3: 95% UCL Concentration from DU-9 The 95% UCL dieldrin concentration from DU-9 for dieldrin was entered into the model (0.211 mg/kg). Software default values were used for exposure factors, fate and transport parameters, and decay rates. Estimated risk for the residential receptor-child was 6.39x10-6 and the estimated risk for the residential receptor-age adjusted was 9.46x10-6; both are within the acceptable risk level (1.0x10-5). Estimated risk for the non-residential receptor was 3.45x10-7 and estimated risk for the construction worker receptor was 4.40x10-8; both are within the acceptable risk level (1.0x10-5). Estimated non-cancer risk for the residential receptor-child was 0.0932 and the estimated non- cancer risk for the residential receptor-age adjusted was 0.0276. Additionally, estimated non- cancer risk for the non-residential receptor was 0.00458 and estimated non-cancer risk for the construction worker receptor was 0.00385. These HIs meet the acceptable non-cancer risk level Section 9.0 Conclusions and Recommendations Surface soil results from the December 2015 investigation at DUs 7 to 10 indicate that some dieldrin concentrations exceed the USEPA residential RSL at all four DUs. However, results of the RE-1 on DU-9 data (highest concentrations of the four DUs) conducted using the REM indicate dieldrin concentrations meet acceptable risk levels for the residential (child and age- adjusted) receptors using the highest of the replicate samples, the mean concentration, and the ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho 16 95% UCL. Model results also show dieldrin risk concentrations are acceptable for non- residential and construction worker receptors (less than 1.0x10-5). The non-cancer risk (1.0) for all receptors was not exceeded using any of the calculated concentrations. Based on the results of this investigation, TerraGraphics finds no further action is necessary for DUs 7 to 10. TerraGraphics re-iterates their recommendation options to reduce potential risk at DU-4:  Limit the Site to industrial use through a deed restriction.  Implement institutional controls barriers) to break the dermal and ingestion pathway.  Remove and dispose of contaminated surface soils from within DU-4. Section 10.0 References and Resources Used Agency for Toxic Substances & Disease Registry (ATSDR), 2011. http://www.atsdr.cdc.gov/toxprofiles/tp.asp?id=317&tid=56, accessed July 31, 2013. State of Alaska Department of Environmental Conservation, 2009. Draft Guidance on MULTI INCREMENT Soil Sampling. ADEC Division of Spill Prevention and Response: Contaminated Sites Program. Idaho Department of Environmental Quality (IDEQ), 2004. Risk Evaluation Manual, 1410 North Hilton, Boise, Idaho 83706. IRS Environmental, 2007. Asbestos Removal from Columbia Grain, 103/109 North Almon, Moscow, Idaho. Letter dated September 19, 2007, to Russ Braun of Columbia Grain, Inc. Interstate Technology & Regulatory Council (ITRC) Incremental Sampling Methodology Team, 2012. Incremental Sampling Methodology Technical and Regulatory Guidance. TerraGraphics Environmental Engineering, Inc. (TerraGraphics), 2007. Phase I Environmental Site Assessment Report, 109 North Almon Street, Moscow Idaho 83843. Prepared for David Ollivant, ST Moscow, LLC. June. TerraGraphics, 2011. Master Quality Assurance Project Plan for the City of Moscow Brownfields Phase II Environmental Site Assessments, Moscow, Idaho. October 31. TerraGraphics, 2013a. Updated - Quality Assurance Project Plan: Dumas Seed Facility, Moscow, Idaho Phase II Environmental Site Assessment. Prepared for the City of Moscow, May. TerraGraphics, 2013b. Final Dumas Seed Facility in Moscow, Idaho Extended Phase II Environmental Site Assessment Report. Prepared for the City of Moscow, August. TerraGraphics, 2015. Addendum 1 for the Updated Quality Assurance Project Plan: Dumas Seed Facility, Moscow, Idaho Phase II Environmental Site Assessment. December. TerraGraphics, 2016. QA/QC Review of the December 2015 Sampling at the Dumas Seed Site. January. Included in Appendix A. Tetra Tech, Inc. (Tetra Tech), 2012. Final Phase I Environmental Site Assessment, Old Dumas Seed Site, 103 North Almon, Moscow, Idaho. February 20. ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho 17 Tetra Tech, 2013. Final Phase II Environmental Site Assessment, Old Dumas Seed Site 103 North Almon Street, Moscow, Idaho. Prepared for the City of Moscow, April 17. US Environmental Protection Agency (USEPA), 2007. Method 8081B Organochlorine Pesticides by Gas Chromatography. February 2007: Revision 2. USEPA, 2012. Regional Screening Levels (RSLs) Summary Table. Dated November 2012. Washington Department of Ecology (WDOE), 1994. Natural Background Soil Metals Concentrations in Washington State. Toxics Cleanup Program, Department of Ecology. Publication# 94-115. October. ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho A Appendix A QA/QC Memorandum (Includes Laboratory Report) ---PAGE BREAK--- www.terragraphics.com Corporate Office: 121 S. Jackson St., Moscow, Idaho 83843 Ph: (208) 882-7858; Fax: (208) 883-3785 Other Office Locations: Kellogg, Idaho Boise, Idaho Deer Lodge, Montana Las Vegas, Nevada Richland, Washington Pasco, Washington I N T E R N A L P R O J E C T M E M O R A N D U M To: Robin Nimmer, Project Manager, Moscow From: Rachel Gibeault, Data Validator, Boise Date: January 22, 2016 Project Code: 15110-03 Subject: QA/QC Review of the December 2015 Sampling at the Dumas Seed Site 1 Introduction This memorandum provides a summary of the data validation and data quality assessment performed for the December 2015 sampling conducted at the Dumas Seed site in Moscow, Idaho. The field crew conducted sampling on December 17 and 18, 2015. Sampling procedures and the quality assurance (QA)/quality control (QC) review followed guidelines set forth in the following documents:  Updated - Quality Assurance Project Plan [QAPP]: Dumas Seed Facility Moscow, Idaho Phase II Environmental Site Assessment (TerraGraphics 2013).  Addendum 1 for the Updated Quality Assurance Project Plan: Dumas Seed Facility, Moscow, Idaho Phase II Environmental Site Assessment (TerraGraphics 2015).  National Functional Guidelines for Superfund Organic Methods Data Review (USEPA 2014).  Guidance on Environmental Data Verification and Data Validation (USEPA 2002). This memorandum discusses the data quality assessment and data validation performed for the Sample Delivery Group (SDG) listed in Table 1. Data qualifiers used in this review are defined in the National Functional Guidelines for Superfund Organic Methods Data Review (USEPA 2014). Table 1. SDG Data Validation Summary SDG Analysis per Batch Data Validation Level (USEPA 2009) Review Conducted by 151218033 Dieldrin Stage 2A TerraGraphics ---PAGE BREAK--- QA/QC Review of the December 2015 Sampling at Dumas Seed, Moscow, Idaho Page 2 of 3 2 Data Validation and Quality Assessment Summary Anatek Labs, Inc. (Anatek) submitted all required deliverables. Attachment A contains the final laboratory reports from Anatek. TerraGraphics’ review of the field data and Stage 2A validation of the analytical data are summarized in Table 2. Procedures/checks that require further discussion are explained below the table, as necessary. Table 2. Data Quality Review Summary Data Validation Procedure or Check Acceptable Frequency? a Acceptable Performance? b Data Qualified? Discussion Item Number Sample condition upon receipt at laboratory Y N Preservation Y N Holding times Y N Laboratories followed specified analytical methods Y N Method Blanks Y Y N Surrogate Recoveries/Deuterated Monitoring Compounds Recoveries Y Y N Laboratory Control Samples Y Y N Matrix Spikes Y Y N Matrix Spike Duplicates Y Y N Post Digestion Spikes Trip Blank Rinsate Blanks Field Duplicates (Table 1) Y N N 1 Field Replicates (Table 2) Y Y N a Frequencies as defined in Addendum 1 to the Updated QAPP (TerraGraphics 2015). b As defined in the Addendum 1 to the Updated QAPP (TerraGraphics 2015), or based on professional judgement of the data validator. = not applicable 1) Field Duplicate: The relative percent difference between the original and duplicate sample is 95.2%. The laboratory verified the concentration accuracy for both samples. The results show the soil concentration variability. Generally, concentrations are not qualified based on soil duplicate sample results. 3 Overall Assessment Based on this data quality review, the laboratory and field data are determined to be of acceptable quality. Accuracy and precision are acceptable. Since no data were rejected, completeness for this sampling event is calculated at 100%. Dieldrin was qualified as an estimate in sample (DS-U10-A)121815 due to the detected concentration falling between the method detection limit and the practical quantitation limit. ---PAGE BREAK--- QA/QC Review of the December 2015 Sampling at Dumas Seed, Moscow, Idaho Page 3 of 3 4 References TerraGraphics Environmental Engineering, Inc. (TerraGraphics). 2013. Updated - Quality Assurance Project Plan [QAPP]: Dumas Seed Facility Moscow, Idaho Phase II Environmental Site Assessment. May. TerraGraphics. 2015. Addendum 1 for the Updated Quality Assurance Project Plan: Dumas Seed Facility, Moscow, Idaho Phase II Environmental Site Assessment. Memorandum addressed to K. Steele (City of Moscow) and T. Griffith (EPA). December. U.S. Environmental Protection Agency (USEPA). 2002. Guidance on Environmental Data Verification and Data Validation. USEPA QA/G-8; November. USEPA. 2009. Guidance for Labeling Externally Validated Laboratory Analytical Data for Superfund Use. OSWER No. 9200.1-85, EPA 540-R-08-005 prepared by the Office of Solid Waste and Emergency Response; January. USEPA. 2014. National Functional Guidelines for Superfund Organic Methods Data Review, OSWER 9355.0-132, EPA 540-R-014-002; August. ---PAGE BREAK--- Site Name Sample Date Analyte Original Concentration (mg/kg) Duplicate Concentration (mg/kg) RPD DS-U7-C 12/17/2015 Dieldrin 0.0179 0.0504 95.2 Relative Percent Difference (RPD) =(IX1-X2I/((X1+X2)/2))*100 X1 = Original Concentration X2 = Duplicate Concentration mg/kg = milligrams per kilogram Table 1. Soil Field Duplicate Sample Analysis ---PAGE BREAK--- Table 2. Field Replicate Analysis CV or RSD Dieldrin Field 7 56.0% Field 8 87.0% Field 9 58.0% Field 10 73.0% CV = coefficient of variation Type of Sample Decision Unit RSD = percent relative standard deviation = Standard Deviation / Mean Concentration *100 ---PAGE BREAK--- QA/QC Review of the December 2015 Sampling at Dumas Seed, Moscow, Idaho A Attachment A Anatek Laboratory Report ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Batch 151218033 Project Summary Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] The samples listed on the following page(s) were received for analysis at Anatek Labs, Inc. The analytical report is attached. All test results reported below comply with and meet current TNI standards, other applicable regulatory standards, and the Anatek Labs, Inc. Quality Assurance Manual, unless otherwise noted in the report. The results in this report relate only to the samples analyzed. All soil and solid results are reported on a dry- weight basis unless otherwise noted. An estimation of uncertainty is available upon request. This report shall not be reproduced, except in full, without the written consent of Anatek Labs, Inc. For questions about this report, please contact Justin Doty at [PHONE REDACTED]. Authorized Signature John Coddington, Lab Manager Page 1 of 2 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 1 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Batch 151218033 Project Summary Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] Anatek Sample ID Client Sample ID Matrix Collection Date/Time Received Date/Time Sample Summary 151218033-001 (DS-U7-A) 121715 Soil 12/17/2015 11:34:00 AM 12/18/2015 2:49:00 PM 151218033-002 (DS-U7-B) 121715 Soil 12/17/2015 1:45:00 PM 12/18/2015 2:49:00 PM 151218033-003 (DS-U-7-C) 121715 Soil 12/17/2015 3:15:00 PM 12/18/2015 2:49:00 PM 151218033-004 (DS-U7-C) 121715 DUP Soil 12/17/2015 3:15:00 PM 12/18/2015 2:49:00 PM 151218033-005 (DS-U8-A) 121715 Soil 12/17/2015 11:15:00 AM 12/18/2015 2:49:00 PM 151218033-006 (DS-U8-B) 121715 Soil 12/17/2015 12:05:00 PM 12/18/2015 2:49:00 PM 151218033-007 (DS-U8-C) 121715 Soil 12/17/2015 2:25:00 PM 12/18/2015 2:49:00 PM 151218033-008 (DS-U9-A) 121815 Soil 12/18/2015 10:20:00 AM 12/18/2015 2:49:00 PM 151218033-009 (DS-U9-B) 121815 Soil 12/18/2015 12:05:00 PM 12/18/2015 2:49:00 PM 151218033-010 (DS-U9-C) 121815 Soil 12/18/2015 1:40:00 PM 12/18/2015 2:49:00 PM 151218033-011 (DS-U10-A) 121815 Soil 12/18/2015 10:21:00 AM 12/18/2015 2:49:00 PM 151218033-012 (DS-U10-B) 121815 Soil 12/18/2015 12:06:00 PM 12/18/2015 2:49:00 PM 151218033-013 (DS-U10-C) 121815 Soil 12/18/2015 1:45:00 PM 12/18/2015 2:49:00 PM QA/QC Summary QC Parameter 1. Sample Holding Time Valid? 2. Instrument Tunes Valid? 3. Method Blank(s) Valid? 4. Internal Standard Response(s) Valid? 5. Initial Calibration Curve(s) Valid? 6. Continuing Calibration(s) Valid? 7. Surrogate Recoveries Valid? 8. QC Sample Recoveries Valid? Yes / No (if No, see Comments below) Yes Yes Yes Yes Yes Yes Yes Yes Comments:Samples 151218033-004 and -003 were re-extraced and analzed on 1/4/2016 to confirm the initial results. The re-analysis results were 0.0504 mg/Kg and 0.0179 mg/Kg respectively, confirming the initial results Page 2 of 2 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 2 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-001 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/17/2015 Sampling Time 11:34 AM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U7-A) 121715 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.0104 0.01 0.005 Percent SAT 12/21/2015 %moisture %moisture 27.8 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-001 Method DCB 88.0 30-150 EPA 8081A Page 1 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 3 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-002 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/17/2015 Sampling Time 1:45 PM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U7-B) 121715 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.0271 0.01 0.005 Percent SAT 12/21/2015 %moisture %moisture 25.9 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-002 Method DCB 97.0 30-150 EPA 8081A Page 2 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 4 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-003 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/17/2015 Sampling Time 3:15 PM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U-7-C) 121715 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.0179 0.01 0.005 Percent SAT 12/21/2015 %moisture %moisture 27.2 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-003 Method DCB 100.4 30-150 EPA 8081A Page 3 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 5 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-004 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/17/2015 Sampling Time 3:15 PM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U7-C) 121715 DUP 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.0504 0.01 0.005 Percent SAT 12/21/2015 %moisture %moisture 26.4 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-004 Method DCB 112.0 30-150 EPA 8081A Page 4 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 6 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-005 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/17/2015 Sampling Time 11:15 AM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U8-A) 121715 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.0110 0.01 0.005 Percent SAT 12/21/2015 %moisture %moisture 24.9 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-005 Method DCB 91.8 30-150 EPA 8081A Page 5 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 7 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-006 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/17/2015 Sampling Time 12:05 PM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U8-B) 121715 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.0717 0.01 0.005 Percent SAT 12/21/2015 %moisture %moisture 25.3 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-006 Method DCB 97.2 30-150 EPA 8081A Page 6 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 8 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-007 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/17/2015 Sampling Time 2:25 PM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U8-C) 121715 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.0137 0.01 0.005 Percent SAT 12/21/2015 %moisture %moisture 26.6 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-007 Method DCB 92.6 30-150 EPA 8081A Page 7 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 9 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-008 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/18/2015 Sampling Time 10:20 AM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U9-A) 121815 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.0291 0.01 0.005 Percent SAT 12/21/2015 %moisture %moisture 33 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-008 Method DCB 95.8 30-150 EPA 8081A Page 8 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 10 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-009 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/18/2015 Sampling Time 12:05 PM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U9-B) 121815 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.112 0.01 0.005 Percent SAT 12/21/2015 %moisture %moisture 32.4 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-009 Method DCB 104.0 30-150 EPA 8081A Page 9 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 11 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-010 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/18/2015 Sampling Time 1:40 PM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U9-C) 121815 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.180 0.01 0.005 Percent SAT 12/21/2015 %moisture %moisture 26.7 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-010 Method DCB 91.2 30-150 EPA 8081A Page 10 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 12 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-011 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/18/2015 Sampling Time 10:21 AM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U10-A) 121815 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.00574 0.01 J 0.005 Percent SAT 12/21/2015 %moisture %moisture 25.5 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-011 Method DCB 91.0 30-150 EPA 8081A Page 11 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 13 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-012 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/18/2015 Sampling Time 12:06 PM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U10-B) 121815 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.0462 0.01 0.005 Percent SAT 12/21/2015 %moisture %moisture 26.1 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-012 Method DCB 103.4 30-150 EPA 8081A Page 12 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 14 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] 151218033-013 Sample Number Matrix Soil Parameter Result Units Analysis Date Analyst Method Qualifier PQL Client Sample ID Sampling Date 12/18/2015 Sampling Time 1:45 PM Date/Time Received 12/18/2015 Sample Location Extraction Date (DS-U10-C) 121815 12/21/2015 2:49 PM MDL Comments mg/Kg SAT 12/30/2015 Dieldrin EPA 8081A 0.0121 0.01 0.005 Percent SAT 12/21/2015 %moisture %moisture 26 Surrogate Data Surrogate Standard Percent Recovery Control Limits Sample Number 151218033-013 Method DCB 82.6 30-150 EPA 8081A Authorized Signature John Coddington, Lab Manager J The reported value is between the laboratory method detection limit and the laboratory practical quantitation limit. MCL EPA's Maximum Contaminant Level ND Not Detected PQL Practical Quantitation Limit This report shall not be reproduced except in full, without the written approval of the laboratory. The results reported relate only to the samples indicated. Soil/solid results are reported on a dry-weight basis unless otherwise noted. Page 13 of 13 Wednesday, January 06, 2016 Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 15 of 21 ---PAGE BREAK--- Client: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING Attn: ROBIN NIMMER Address: 121 S. JACKSON MOSCOW, ID 83843 Analytical Results Report Batch 151218033 Project Name: DUMAS SEED 15146-02 Quality Control Data Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] Parameter %Rec Lab Control Sample LCS Result LCS Spike AR %Rec Analysis Date Units Prep Date 12/30/2015 Dieldrin 0.02 83.0 0.0166 47-123 mg/Kg 12/21/2015 Parameter %Rec Matrix Spike Duplicate MSD Result MSD Spike Analysis Date Units %RPD AR %RPD Prep Date 12/30/2015 Dieldrin 0.021 111.0 0.0354 mg/Kg 13.2 0-50 12/21/2015 Parameter %Rec Matrix Spike Sample Number MS Result MS Spike AR %Rec Analysis Date Units Sample Result Prep Date 151218033-013 12/30/2015 Dieldrin 0.021 134.8 0.0404 33-136 mg/Kg 0.0121 12/21/2015 Parameter Method Blank Result Analysis Date Units PQL Prep Date 12/30/2015 Dieldrin ND mg/Kg 0.01 12/21/2015 AR Acceptable Range ND Not Detected PQL Practical Quantitation Limit RPD Relative Percentage Difference Page 1 of 1 Wednesday, January 06, 2016 Comments: Certifications held by Anatek Labs ID: EPA:ID00013; AZ:0701; CO:ID00013; FL(NELAP):E87893; ID:ID00013; MT:CERT0028; NM: ID00013; OR:ID200001-002; WA:C595 Certifications held by Anatek Labs WA: EPA:WA00169; ID:WA00169; WA:C585; MT:Cert0095; FL(NELAP): E871099 Page 16 of 21 ---PAGE BREAK--- Login Report Anatek Labs, Inc. 1282 Alturas Drive • Moscow, ID 83843 • (208) 883-2839 • Fax (208) 882-9246 • email [EMAIL REDACTED] 504 E Sprague Ste. D • Spokane WA 99202 • (509) 838-3999 • Fax (509) 838-4433 • email [EMAIL REDACTED] Order ID: 151218033 Customer Name: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING 121 S. JACKSON Contact Name: ROBIN NIMMER Comment: Order Date: 12/18/2015 Project Name: DUMAS SEED 15146-02 MOSCOW ID 83843 Sample 151218033-001 Date Collected: 12/17/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U7-A) 121715 Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 11:34 AM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M Sample 151218033-002 Date Collected: 12/17/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U7-B) 121715 Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 1:45 PM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M Sample 151218033-003 Date Collected: 12/17/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U-7-C) 121715 Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 3:15 PM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M Page 17 of 21 ---PAGE BREAK--- Order ID: 151218033 Customer Name: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING 121 S. JACKSON Contact Name: ROBIN NIMMER Comment: Order Date: 12/18/2015 Project Name: DUMAS SEED 15146-02 MOSCOW ID 83843 Sample 151218033-004 Date Collected: 12/17/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U7-C) 121715 DUP Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 3:15 PM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M Sample 151218033-005 Date Collected: 12/17/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U8-A) 121715 Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 11:15 AM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M Sample 151218033-006 Date Collected: 12/17/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U8-B) 121715 Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 12:05 PM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M Sample 151218033-007 Date Collected: 12/17/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U8-C) 121715 Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 2:25 PM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M Page 18 of 21 ---PAGE BREAK--- Order ID: 151218033 Customer Name: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING 121 S. JACKSON Contact Name: ROBIN NIMMER Comment: Order Date: 12/18/2015 Project Name: DUMAS SEED 15146-02 MOSCOW ID 83843 Sample 151218033-008 Date Collected: 12/18/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U9-A) 121815 Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 10:20 AM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M Sample 151218033-009 Date Collected: 12/18/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U9-B) 121815 Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 12:05 PM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M Sample 151218033-010 Date Collected: 12/18/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U9-C) 121815 Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 1:40 PM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M Sample 151218033-011 Date Collected: 12/18/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U10-A) 121815 Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 10:21 AM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M Page 19 of 21 ---PAGE BREAK--- Order ID: 151218033 Customer Name: TERRAGRAPHICS ENVIRONMENTAL ENGINEERING 121 S. JACKSON Contact Name: ROBIN NIMMER Comment: Order Date: 12/18/2015 Project Name: DUMAS SEED 15146-02 MOSCOW ID 83843 Sample 151218033-012 Date Collected: 12/18/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U10-B) 121815 Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 12:06 PM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M Sample 151218033-013 Date Collected: 12/18/2015 Date Received: 12/18/2015 2:49:00 PM Customer Sample (DS-U10-C) 121815 Comment: Collector: Matrix: Soil Quantity: 1 Recv'd: Test Method Due Date Priority Lab Time Collected: 1:45 PM %Moisture 12/31/2015 %moisture Normal (~10 Days) M OC PEST 8081A 12/31/2015 EPA 8081A Normal (~10 Days) M SAMPLE CONDITION RECORD Samples received in a cooler? Yes Samples received intact? Yes What is the temperature of the sample(s)? 6.4 Samples received with a COC? Yes Samples received within holding time? Yes Are all sample bottles properly preserved? Yes Are VOC samples free of headspace? N/A Is there a trip blank to accompany VOC samples? N/A Labels and chain agree? Yes Page 20 of 21 ---PAGE BREAK--- Data Summary Report for the 2015 Surface Soil Investigation at the Dumas Seed Facility in Moscow, Idaho B Appendix B RE-1 Risk Information ---PAGE BREAK--- RE-1 for DU-4 ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 6.87E-01 Notes: GROUNDWATER AND/OR SURFACE WATER PROTECTION Representative Soil Concentration at the Source [mg/kg] Representative Groundwater Concentration at the Source [mg/L] Representative Groundwater Concentration at the POC [mg/L] NOT USED IN CALCULATIONS Representative Concentration [mg/kg] NOT REQUIRED- USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-RES ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 6.87E-01 Note: Representative Concentration [mg/kg] NOT REQUIRED-USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-NRES ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR CONSTRUCTION WORKER SOIL TO TYPICAL DEPTH OF CONSTRUCTION CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Dieldrin 6.87E-01 Note: Representative Concentration [mg/kg] Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-CON ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR RESIDENTIAL RECEPTORS CHILD SURFICIAL SOIL SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 2.08E-05 3.04E-01 3.08E-05 8.99E-02 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SUB-SURFACE SOIL GROUNDWATER Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions AGE-ADJUSTED SUB-SURFACE SOIL GROUNDWATER NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK R ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 1.12E-06 1.49E-02 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions SUB-SURFACE SOIL GROUNDWATER Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK NR ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR CONSTRUCTION WORKERS SURFICIAL SOIL Risk HQ Dieldrin 1.43E-07 1.25E-02 Notes: NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK CON ---PAGE BREAK--- RE-1 SUMMARY OF CUMULATIVE RISK AND HAZARD INDEX RECEPTOR RESIDENTIAL NON-RESIDENTIAL CONSTRUCTION WORKER CHILD AGE-ADJUSTED Risk Hazard Index Risk Hazard Index Risk Hazard Index Risk Hazard Index Surface Soil: Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion 2.08E-05 3.04E-01 3.08E-05 8.99E-02 1.12E-06 1.49E-02 1.43E-07 1.25E-02 Subsurface Soil: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Groundwater: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Soil-Vapor: Indoor Inhalation of Vapor Emissions from Soil and/or Groundwater NA NA NA NA NA NA Not Applicable Not Applicable Site Risk 2.08E-05 3.08E-05 1.12E-06 1.43E-07 Site Hazard Index 3.04E-01 8.99E-02 1.49E-02 1.25E-02 Routes of Exposure RATL-1/RATL-2 Required? YES NO YES NO NO NO NO NO Notes: NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration entered) or its properties (toxicity and/or physical-chemical) are not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK SUM ---PAGE BREAK--- RATL-1 FOR RESIDENTIAL RECEPTORS CHILD AGE-ADJUSTED SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN [mg/kg] [mg/kg] [mg/L] [ug/m3] [mg/kg] [mg/kg] [mg/L] [g/m3] Dieldrin 3.30E-01 NA NA NA 2.23E-01 NA NA NA Notes: Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration entered) or its properties (toxicity and/or physical-chemical) are not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RATL R ---PAGE BREAK--- RATL-1 FOR NON-RESIDENTIAL RECEPTORS RATLs NOT REQUIRED SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN [mg/kg] [mg/kg] [mg/L] [g/m3] Dieldrin 6.11E+00 NA NA NA Notes: Indoor Inhalation of Vapor Emissions NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration enetered) or its properties (toxicity and/or physical-chemical) are not available. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RATL NR ---PAGE BREAK--- RATL-1 FOR CONSTRUCTION WORKERS RATLs NOT REQUIRED SURFICIAL SOIL [mg/kg] Dieldrin 4.79E+01 Notes: CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration enetered) or its properties (toxicity and/or physical-chemical) are not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RATL CON ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 5.01E-01 Notes: GROUNDWATER AND/OR SURFACE WATER PROTECTION Representative Soil Concentration at the Source [mg/kg] Representative Groundwater Concentration at the Source [mg/L] Representative Groundwater Concentration at the POC [mg/L] NOT USED IN CALCULATIONS Representative Concentration [mg/kg] NOT REQUIRED- USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-RES ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 5.01E-01 Note: Representative Concentration [mg/kg] NOT REQUIRED-USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-NRES ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR CONSTRUCTION WORKER SOIL TO TYPICAL DEPTH OF CONSTRUCTION CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Dieldrin 5.01E-01 Note: Representative Concentration [mg/kg] Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-CON ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR RESIDENTIAL RECEPTORS CHILD SURFICIAL SOIL SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 1.52E-05 2.21E-01 2.25E-05 6.55E-02 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SUB-SURFACE SOIL GROUNDWATER Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions AGE-ADJUSTED SUB-SURFACE SOIL GROUNDWATER NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK R ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 8.20E-07 1.09E-02 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions SUB-SURFACE SOIL GROUNDWATER Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK NR ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR CONSTRUCTION WORKERS SURFICIAL SOIL Risk HQ Dieldrin 1.05E-07 9.15E-03 Notes: NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK CON ---PAGE BREAK--- RE-1 SUMMARY OF CUMULATIVE RISK AND HAZARD INDEX RECEPTOR RESIDENTIAL NON-RESIDENTIAL CONSTRUCTION WORKER CHILD AGE-ADJUSTED Risk Hazard Index Risk Hazard Index Risk Hazard Index Risk Hazard Index Surface Soil: Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion 1.52E-05 2.21E-01 2.25E-05 6.55E-02 8.20E-07 1.09E-02 1.05E-07 9.15E-03 Subsurface Soil: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Groundwater: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Soil-Vapor: Indoor Inhalation of Vapor Emissions from Soil and/or Groundwater NA NA NA NA NA NA Not Applicable Not Applicable Site Risk 1.52E-05 2.25E-05 8.20E-07 1.05E-07 Site Hazard Index 2.21E-01 6.55E-02 1.09E-02 9.15E-03 Routes of Exposure RATL-1/RATL-2 Required? YES NO YES NO NO NO NO NO Notes: NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration entered) or its properties (toxicity and/or physical-chemical) are not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK SUM ---PAGE BREAK--- RATL-1 FOR RESIDENTIAL RECEPTORS CHILD AGE-ADJUSTED SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN [mg/kg] [mg/kg] [mg/L] [ug/m3] [mg/kg] [mg/kg] [mg/L] [g/m3] Dieldrin 3.30E-01 NA NA NA 2.23E-01 NA NA NA Notes: Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration entered) or its properties (toxicity and/or physical-chemical) are not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RATL R ---PAGE BREAK--- RATL-1 FOR NON-RESIDENTIAL RECEPTORS RATLs NOT REQUIRED SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN [mg/kg] [mg/kg] [mg/L] [g/m3] Dieldrin 6.11E+00 NA NA NA Notes: Indoor Inhalation of Vapor Emissions NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration enetered) or its properties (toxicity and/or physical-chemical) are not available. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RATL NR ---PAGE BREAK--- RATL-1 FOR CONSTRUCTION WORKERS RATLs NOT REQUIRED SURFICIAL SOIL [mg/kg] Dieldrin 4.79E+01 Notes: CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration enetered) or its properties (toxicity and/or physical-chemical) are not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RATL CON ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 8.78E-01 Notes: GROUNDWATER AND/OR SURFACE WATER PROTECTION Representative Soil Concentration at the Source [mg/kg] Representative Groundwater Concentration at the Source [mg/L] Representative Groundwater Concentration at the POC [mg/L] NOT USED IN CALCULATIONS Representative Concentration [mg/kg] NOT REQUIRED- USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-RES ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 8.78E-01 Note: Representative Concentration [mg/kg] NOT REQUIRED-USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-NRES ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR CONSTRUCTION WORKER SOIL TO TYPICAL DEPTH OF CONSTRUCTION CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Dieldrin 8.78E-01 Note: Representative Concentration [mg/kg] Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-CON ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR RESIDENTIAL RECEPTORS CHILD SURFICIAL SOIL SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 2.66E-05 3.88E-01 3.94E-05 1.15E-01 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SUB-SURFACE SOIL GROUNDWATER Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions AGE-ADJUSTED SUB-SURFACE SOIL GROUNDWATER NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK R ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 1.44E-06 1.91E-02 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions SUB-SURFACE SOIL GROUNDWATER Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK NR ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR CONSTRUCTION WORKERS SURFICIAL SOIL Risk HQ Dieldrin 1.83E-07 1.60E-02 Notes: NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK CON ---PAGE BREAK--- RE-1 SUMMARY OF CUMULATIVE RISK AND HAZARD INDEX RECEPTOR RESIDENTIAL NON-RESIDENTIAL CONSTRUCTION WORKER CHILD AGE-ADJUSTED Risk Hazard Index Risk Hazard Index Risk Hazard Index Risk Hazard Index Surface Soil: Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion 2.66E-05 3.88E-01 3.94E-05 1.15E-01 1.44E-06 1.91E-02 1.83E-07 1.60E-02 Subsurface Soil: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Groundwater: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Soil-Vapor: Indoor Inhalation of Vapor Emissions from Soil and/or Groundwater NA NA NA NA NA NA Not Applicable Not Applicable Site Risk 2.66E-05 3.94E-05 1.44E-06 1.83E-07 Site Hazard Index 3.88E-01 1.15E-01 1.91E-02 1.60E-02 Routes of Exposure RATL-1/RATL-2 Required? YES NO YES NO NO NO NO NO Notes: NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration entered) or its properties (toxicity and/or physical-chemical) are not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK SUM ---PAGE BREAK--- RATL-1 FOR RESIDENTIAL RECEPTORS CHILD AGE-ADJUSTED SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN [mg/kg] [mg/kg] [mg/L] [ug/m3] [mg/kg] [mg/kg] [mg/L] [g/m3] Dieldrin 3.30E-01 NA NA NA 2.23E-01 NA NA NA Notes: Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration entered) or its properties (toxicity and/or physical-chemical) are not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RATL R ---PAGE BREAK--- RATL-1 FOR NON-RESIDENTIAL RECEPTORS RATLs NOT REQUIRED SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN [mg/kg] [mg/kg] [mg/L] [g/m3] Dieldrin 6.11E+00 NA NA NA Notes: Indoor Inhalation of Vapor Emissions NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration enetered) or its properties (toxicity and/or physical-chemical) are not available. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RATL NR ---PAGE BREAK--- RATL-1 FOR CONSTRUCTION WORKERS RATLs NOT REQUIRED SURFICIAL SOIL [mg/kg] Dieldrin 4.79E+01 Notes: CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration enetered) or its properties (toxicity and/or physical-chemical) are not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RATL CON ---PAGE BREAK--- RE-1 for DU-5 ---PAGE BREAK--- 1.1 Risk-Evaluation-1 Based on initial screening level criteria exceedance for dieldrin in Site soil, an RE-1 was completed for DU-5. This RE-1 considers the residential, non-residential, and construction worker scenarios based on current and unknown future uses of the Site. Risk and hazard calculations for dieldrin in surface soil were completed using a standard set of risk equations provided by the REM software (IDEQ 2004). TerraGraphics ran the model for DU-5 using the highest concentration of the three sample replicates (DM-1), the mean concentration of the three samples (DM-2), and the 95% UCL concentration (DM-3). Generally in a risk evaluation, the combined exposure to all carcinogens and routes of exposure must have an individual excess lifetime cancer risk (IELCR) less than or equal to 1.0x10-5 (acceptable Risk) for a receptor at a reasonable maximum exposure. Additionally, the summation of hazard quotients (HQs) for all chemicals that have non-carcinogenic health effects and routes of exposure must be less than or equal to 1.0 (acceptable Hazard Index 1.1.1 DM-1: Single ISM Sample from DU-5 The maximum dieldrin concentration for the ISM from DU-5 that exceeded the USEPA residential RSL was entered into the model (0.154 mg/kg in sample DS-U5-3). Software default values were used for exposure factors, fate and transport parameters, and decay rates. Estimated risk for the residential receptor-child was 4.67x10-6 and estimated risk for the residential receptor-age adjusted was 6.91x10-6; both are below the acceptable risk level (1.0x10-5). Estimated risk for the non-residential receptor was 2.52x10-7 and estimated risk for the construction worker receptor was 3.21x10-8; both are below the acceptable risk level (1.0x10-5). Estimated non-cancer risk for the residential receptor-child was 0.0681 and the estimated non- cancer risk for the residential receptor-age adjusted was 0.0201. Additionally, estimated non- cancer risk for the non-residential receptor was 0.00334 and estimated non-cancer risk for the construction worker receptor was 0.00281. These HIs are below the acceptable non-cancer risk level 1.1.2 DM-2: Mean Concentration from DU-5 The mean dieldrin concentration from DU-5 was entered into the model (0.114 mg/kg). Software default values were used for exposure factors, fate and transport parameters, and decay rates. Estimated risk for the residential receptor-child was 3.45x10-6 and the estimated risk for the residential receptor-age adjusted was 5.11x10-6; both are below the acceptable risk level (1.0x10-5). Estimated risk for the non-residential receptor was 1.87x10-7 and estimated risk for the construction worker receptor was 2.38x10-8; both are below the acceptable risk level (1.0x10-5). Estimated non-cancer risk for the residential receptor-child was 0.0504 and the estimated non- cancer risk for the residential receptor-age adjusted was 0.0149. Additionally, estimated non- cancer risk for the non-residential receptor was 0.00247 and estimated non-cancer risk for the ---PAGE BREAK--- construction worker receptor was 0.00208. These HIs are below the acceptable non-cancer risk level 1.1.3 DM-3: 95% UCL Concentration from DU-5 The 95% UCL dieldrin concentration from DU-5 for dieldrin was entered into the model (0.177 mg/kg). Software default values were used for exposure factors, fate and transport parameters, and decay rates. Estimated risk for the residential receptor-child was 5.36x10-6 and the estimated risk for the residential receptor-age adjusted was 7.94x10-6; both are below the acceptable risk level (1.0x10-5). Estimated risk for the non-residential receptor was 2.90x10-7 and estimated risk for the construction worker receptor was 3.69x10-8; both are below the acceptable risk level (1.0x10-5). Estimated non-cancer risk for the residential receptor-child was 0.0782 and the estimated non- cancer risk for the residential receptor-age adjusted was 0.0232. Additionally, estimated non- cancer risk for the non-residential receptor was 0.00384 and estimated non-cancer risk for the construction worker receptor was 0.00323. These HIs are below the acceptable non-cancer risk level ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 1.54E-01 Notes: GROUNDWATER AND/OR SURFACE WATER PROTECTION Representative Soil Concentration at the Source [mg/kg] Representative Groundwater Concentration at the Source [mg/L] Representative Groundwater Concentration at the POC [mg/L] NOT USED IN CALCULATIONS Representative Concentration [mg/kg] NOT REQUIRED- USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-RES ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 1.54E-01 Note: Representative Concentration [mg/kg] NOT REQUIRED-USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-NRES ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR CONSTRUCTION WORKER SOIL TO TYPICAL DEPTH OF CONSTRUCTION CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Dieldrin 1.54E-01 Note: Representative Concentration [mg/kg] Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-CON ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR RESIDENTIAL RECEPTORS CHILD SURFICIAL SOIL SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 4.67E-06 6.81E-02 6.91E-06 2.01E-02 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. SOIL-VAPOR Indoor Inhalation of Vapor Emissions AGE-ADJUSTED SUB-SURFACE SOIL GROUNDWATER SUB-SURFACE SOIL GROUNDWATER Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK R ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 2.52E-07 3.34E-03 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK NR ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR CONSTRUCTION WORKERS SURFICIAL SOIL Risk HQ Dieldrin 3.21E-08 2.81E-03 Notes: NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion CHEMICALS OF CONCERN Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK CON ---PAGE BREAK--- RE-1 SUMMARY OF CUMULATIVE RISK AND HAZARD INDEX RECEPTOR RESIDENTIAL NON-RESIDENTIAL CONSTRUCTION WORKER CHILD AGE-ADJUSTED Risk Hazard Index Risk Hazard Index Risk Hazard Index Risk Hazard Index Surface Soil: Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion 4.67E-06 6.81E-02 6.91E-06 2.01E-02 2.52E-07 3.34E-03 3.21E-08 2.81E-03 Subsurface Soil: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Groundwater: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Soil-Vapor: Indoor Inhalation of Vapor Emissions from Soil and/or Groundwater NA NA NA NA NA NA Not Applicable Not Applicable Site Risk 4.67E-06 6.91E-06 2.52E-07 3.21E-08 Site Hazard Index 6.81E-02 2.01E-02 3.34E-03 2.81E-03 RATL-1/RATL-2 Required? NO NO NO NO NO NO NO NO Notes: Routes of Exposure NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration entered) or its properties (toxicity and/or physical-chemical) are not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK SUM ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 1.14E-01 Notes: GROUNDWATER AND/OR SURFACE WATER PROTECTION Representative Soil Concentration at the Source [mg/kg] Representative Groundwater Concentration at the Source [mg/L] Representative Groundwater Concentration at the POC [mg/L] NOT USED IN CALCULATIONS Representative Concentration [mg/kg] NOT REQUIRED- USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-RES ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 1.14E-01 Note: Representative Concentration [mg/kg] NOT REQUIRED-USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-NRES ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR CONSTRUCTION WORKER SOIL TO TYPICAL DEPTH OF CONSTRUCTION CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Dieldrin 1.14E-01 Note: Representative Concentration [mg/kg] Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-CON ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR RESIDENTIAL RECEPTORS CHILD SURFICIAL SOIL SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 3.45E-06 5.04E-02 5.11E-06 1.49E-02 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. SOIL-VAPOR Indoor Inhalation of Vapor Emissions AGE-ADJUSTED SUB-SURFACE SOIL GROUNDWATER SUB-SURFACE SOIL GROUNDWATER Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK R ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 1.87E-07 2.47E-03 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK NR ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR CONSTRUCTION WORKERS SURFICIAL SOIL Risk HQ Dieldrin 2.38E-08 2.08E-03 Notes: NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion CHEMICALS OF CONCERN Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK CON ---PAGE BREAK--- RE-1 SUMMARY OF CUMULATIVE RISK AND HAZARD INDEX RECEPTOR RESIDENTIAL NON-RESIDENTIAL CONSTRUCTION WORKER CHILD AGE-ADJUSTED Risk Hazard Index Risk Hazard Index Risk Hazard Index Risk Hazard Index Surface Soil: Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion 3.45E-06 5.04E-02 5.11E-06 1.49E-02 1.87E-07 2.47E-03 2.38E-08 2.08E-03 Subsurface Soil: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Groundwater: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Soil-Vapor: Indoor Inhalation of Vapor Emissions from Soil and/or Groundwater NA NA NA NA NA NA Not Applicable Not Applicable Site Risk 3.45E-06 5.11E-06 1.87E-07 2.38E-08 Site Hazard Index 5.04E-02 1.49E-02 2.47E-03 2.08E-03 RATL-1/RATL-2 Required? NO NO NO NO NO NO NO NO Notes: Routes of Exposure NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration entered) or its properties (toxicity and/or physical-chemical) are not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK SUM ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 1.77E-01 Notes: GROUNDWATER AND/OR SURFACE WATER PROTECTION Representative Soil Concentration at the Source [mg/kg] Representative Groundwater Concentration at the Source [mg/L] Representative Groundwater Concentration at the POC [mg/L] NOT USED IN CALCULATIONS Representative Concentration [mg/kg] NOT REQUIRED- USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-RES ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 1.77E-01 Note: Representative Concentration [mg/kg] NOT REQUIRED-USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-NRES ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR CONSTRUCTION WORKER SOIL TO TYPICAL DEPTH OF CONSTRUCTION CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Dieldrin 1.77E-01 Note: Representative Concentration [mg/kg] Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name REPC-CON ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR RESIDENTIAL RECEPTORS CHILD SURFICIAL SOIL SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 5.36E-06 7.82E-02 7.94E-06 2.32E-02 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. SOIL-VAPOR Indoor Inhalation of Vapor Emissions AGE-ADJUSTED SUB-SURFACE SOIL GROUNDWATER SUB-SURFACE SOIL GROUNDWATER Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK R ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 2.90E-07 3.84E-03 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK NR ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR CONSTRUCTION WORKERS SURFICIAL SOIL Risk HQ Dieldrin 3.69E-08 3.23E-03 Notes: NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion CHEMICALS OF CONCERN Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK CON ---PAGE BREAK--- RE-1 SUMMARY OF CUMULATIVE RISK AND HAZARD INDEX RECEPTOR RESIDENTIAL NON-RESIDENTIAL CONSTRUCTION WORKER CHILD AGE-ADJUSTED Risk Hazard Index Risk Hazard Index Risk Hazard Index Risk Hazard Index Surface Soil: Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion 5.36E-06 7.82E-02 7.94E-06 2.32E-02 2.90E-07 3.84E-03 3.69E-08 3.23E-03 Subsurface Soil: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Groundwater: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Soil-Vapor: Indoor Inhalation of Vapor Emissions from Soil and/or Groundwater NA NA NA NA NA NA Not Applicable Not Applicable Site Risk 5.36E-06 7.94E-06 2.90E-07 3.69E-08 Site Hazard Index 7.82E-02 2.32E-02 3.84E-03 3.23E-03 RATL-1/RATL-2 Required? NO NO NO NO NO NO NO NO Notes: Routes of Exposure NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration entered) or its properties (toxicity and/or physical-chemical) are not available. Path : C:\Users\rachel.gibeault\Downloads Page 1 of 1 Sheet name RISK SUM ---PAGE BREAK--- RE-1 for DU-9 ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 1.80E-01 Notes: GROUNDWATER AND/OR SURFACE WATER PROTECTION Representative Soil Concentration at the Source [mg/kg] Representative Groundwater Concentration at the Source [mg/L] Representative Groundwater Concentration at the POC [mg/L] NOT USED IN CALCULATIONS Representative Concentration [mg/kg] NOT REQUIRED- USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 1.80E-01 Note: Representative Concentration [mg/kg] NOT REQUIRED-USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR CONSTRUCTION WORKER SOIL TO TYPICAL DEPTH OF CONSTRUCTION CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Dieldrin 1.80E-01 Note: Representative Concentration [mg/kg] ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR RESIDENTIAL RECEPTORS CHILD SURFICIAL SOIL SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 5.45E-06 7.95E-02 8.07E-06 2.35E-02 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. SOIL-VAPOR Indoor Inhalation of Vapor Emissions AGE-ADJUSTED SUB-SURFACE SOIL GROUNDWATER SUB-SURFACE SOIL GROUNDWATER Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 2.95E-07 3.91E-03 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR CONSTRUCTION WORKERS SURFICIAL SOIL Risk HQ Dieldrin 3.76E-08 3.29E-03 Notes: NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion CHEMICALS OF CONCERN ---PAGE BREAK--- RE-1 SUMMARY OF CUMULATIVE RISK AND HAZARD INDEX RECEPTOR RESIDENTIAL NON-RESIDENTIAL CONSTRUCTION WORKER CHILD AGE-ADJUSTED Risk Hazard Index Risk Hazard Index Risk Hazard Index Risk Hazard Index Surface Soil: Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion 5.45E-06 7.95E-02 8.07E-06 2.35E-02 2.95E-07 3.91E-03 3.76E-08 3.29E-03 Subsurface Soil: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Groundwater: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Soil-Vapor: Indoor Inhalation of Vapor Emissions from Soil and/or Groundwater NA NA NA NA NA NA Not Applicable Not Applicable Site Risk 5.45E-06 8.07E-06 2.95E-07 3.76E-08 Site Hazard Index 7.95E-02 2.35E-02 3.91E-03 3.29E-03 RATL-1/RATL-2 Required? NO NO NO NO NO NO NO NO Notes: Routes of Exposure NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration entered) or its properties (toxicity and/or physical-chemical) are not available. ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR RESIDENTIAL RECEPTORS SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions Dieldrin 2.11E-01 Notes: GROUNDWATER AND/OR SURFACE WATER PROTECTION Representative Soil Concentration at the Source [mg/kg] Representative Groundwater Concentration at the Source [mg/L] Representative Groundwater Concentration at the POC [mg/L] NOT USED IN CALCULATIONS Representative Concentration [mg/kg] NOT REQUIRED- USING SOIL VAPOR NOT REQUIRED-USING SOIL VAPOR USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 3.45E-07 4.58E-03 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions ---PAGE BREAK--- RE-1 REPRESENTATIVE CONCENTRATIONS FOR CONSTRUCTION WORKER SOIL TO TYPICAL DEPTH OF CONSTRUCTION CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Dieldrin 2.11E-01 Note: Representative Concentration [mg/kg] ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR RESIDENTIAL RECEPTORS CHILD SURFICIAL SOIL SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 6.39E-06 9.32E-02 9.46E-06 2.76E-02 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. SOIL-VAPOR Indoor Inhalation of Vapor Emissions AGE-ADJUSTED SUB-SURFACE SOIL GROUNDWATER SUB-SURFACE SOIL GROUNDWATER Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions SOIL-VAPOR Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Dieldrin 3.45E-07 4.58E-03 Notes: NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. SUB-SURFACE SOIL GROUNDWATER SOIL-VAPOR Indoor Inhalation of Vapor Emissions Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalation of Vapor Emissions ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR CONSTRUCTION WORKERS SURFICIAL SOIL Risk HQ Dieldrin 4.40E-08 3.85E-03 Notes: NTOX: The toxicity parameter(s) required in the calculation of the value, is not available. NCOC: The chemical is not a COC for the pathway because it was selected, but no representative concentration was entered. NPCP: A physical-chemical parameter, required in the calculation of the value, is not available. Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion CHEMICALS OF CONCERN ---PAGE BREAK--- RE-1 SUMMARY OF CUMULATIVE RISK AND HAZARD INDEX RECEPTOR RESIDENTIAL NON-RESIDENTIAL CONSTRUCTION WORKER CHILD AGE-ADJUSTED Risk Hazard Index Risk Hazard Index Risk Hazard Index Risk Hazard Index Surface Soil: Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion 6.39E-06 9.32E-02 9.46E-06 2.76E-02 3.45E-07 4.58E-03 4.40E-08 3.85E-03 Subsurface Soil: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Groundwater: Indoor Inhalation of Vapor Emissions NA NA NA NA NA NA Not Applicable Not Applicable Soil-Vapor: Indoor Inhalation of Vapor Emissions from Soil and/or Groundwater NA NA NA NA NA NA Not Applicable Not Applicable Site Risk 6.39E-06 9.46E-06 3.45E-07 4.40E-08 Site Hazard Index 9.32E-02 2.76E-02 4.58E-03 3.85E-03 RATL-1/RATL-2 Required? NO NO NO NO NO NO NO NO Notes: Routes of Exposure NA: Not applicable because the chemical is not a COC for the pathway (no representative concentration entered) or its properties (toxicity and/or physical-chemical) are not available.