Document Moscow_doc_9a1223ed2f

FINAL PHASE II ENVIRONMENTAL SITE ASSESSMENT DUMAS ELEVATOR SPUR SITE LILY AND ASBURY STREET MOSCOW, IDAHO Prepared for: Greater Moscow Area Coalition Brownfield Project City of Moscow 206 East Third Street Moscow, Idaho 83843 (208) 833-7000 Prepared by: Tetra Tech, Inc. 2525 Palmer Street, Suite 2 Missoula, Montana 59808 (406) 543-3045 Fax (406) 543-3088 Tetra Tech Project No. 114-570537 May 1, 2013 ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 i TABLE OF CONTENTS 1.0 1.1 Site Location, History and Current Condition 1.2 Previous 1.2.1 Soil Investigation Methods and 2 1.2.2 Soil Sample Analytical Results 2 1.3 Topography 1.4 Geology and Hydrogeology 1.5 Purpose of 1.6 Contaminants of Potential Concern 2.0 SCOPE OF WORK AND OBJECTIVES 2.1 Scope of 2.2 Project 3.0 PHASE II ESA INVESTIGATION METHODS 3.1 Utility 3.2 Deviations to the 3.3 Data Evaluation 3.4 Soil and Groundwater Investigation 3.4.1 Area-Wide Surface Soil Investigation 8 3.4.2 Subsurface Soil 10 3.4.3 Monitoring Well Installation and Groundwater 11 3.5 Quality Assurance/Quality Control (QA/QC) Sample 3.6 Waste 3.7 Risk 3.7.1 Exposure Assessment 13 3.7.2 Contaminant Concentrations 14 3.7.3 Exposure 14 3.7.4 Fate and Transport 14 4.0 PHASE II ESA INVESTIGATION RESULTS 4.1 Data Evaluation 4.1.1 Laboratory Quality Control 15 4.1.2 Field Quality Control Samples 15 4.2 Soil and Groundwater Sample Results 4.2.1 Site-Wide Surface Soil 16 4.2.2 Monitoring Well Installation and 18 4.3 Risk Analysis 4.3.1 Scenario 20 4.3.2 Scenario 21 5.0 SUMMARY AND ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 ii 6.0 REFERENCES LIST OF APPENDICES Appendix A: Figures Appendix B: Tables Appendix C: Laboratory Analytical Reports Appendix D: Field Forms Appendix E: IDEQ REM Forms ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 1 1.0 INTRODUCTION Tetra Tech, Inc. (Tetra Tech) completed a Phase II Environmental Site Assessment (ESA) of the Dumas Elevator Spur Site (the “Site”) in Moscow, Idaho (Figure 1, Appendix The investigation was conducted as part of the Greater Moscow Area Coalition Brownfield Project. Results of a Phase I ESA and limited soil sampling report prepared by STRATA (2010) and subsequent Phase I ESA Addendum prepared by TerraGraphics (2010)) are summarized in Section 1.2.1 of this report and present recognized environmental conditions (RECs) identified for the Site for soil and groundwater from historical use of the Site. This Phase II ESA was completed in general accordance with a sampling and analysis plan (SAP) prepared by Tetra Tech (Tetra Tech, 2012). This report is organized as follows: Section 1 provides an introduction; Section 2 presents the scope of work and objectives of the investigation, and Section 3 presents investigation methods. Section 4 presents results and Section 5 provides conclusions and recommendations. Appendices A and B present figures and tables referenced in the report, respectively. Appendix C presents laboratory analytical reports for soil and groundwater samples obtained during the Phase II ESA. Appendix D presents copies of field forms and Appendix E presents Idaho Department of Environmental Quality (IDEQ) risk evaluation software input and output sheets. 1.1 Site Location, History and Current Condition The Site is comprised of two parcels of land that are located along W. First Street, between Lily and Asbury Streets in Moscow, Idaho. The Site includes the railroad spur line and adjoining right-of-way (ROW). An alley separates the two parcels that comprise the Site (Figure Adjoining the Site on the east is the Dumas Seed facility. Adjoining properties on the north and south of the Site are residential properties, while W. 1st Street continues on the west. Hog Creek flows to the west in an underground culvert/piping structure located on the south side of the property, within the Site boundaries. The general slope of the area appears to be to the west. The Site is a former railroad spur that serviced the Dumas Seed facility to the east. According to information presented by TerraGraphics (2010), the railroad had likely been developed in or around 1885. Railroad ties were being stored on the property at the time of the 2010 investigation completed by TerraGraphics but had been removed from the former railroad spur bed sometime prior to completion of this Phase II ESA by Tetra Tech. Figure 2, an aerial photograph for the Site, shows that the adjoining ROW for the spur line appears to be used by local residents for vehicle parking at their homes (Figure The former railroad spur receives vehicle traffic by neighborhood residents. Bicyclists were also seen using the former railroad spur line as a route to the University of Idaho at the time of Tetra Tech’s Dumas Seed facility investigation in 2012. 1.2 Previous Investigations Tetra Tech reviewed the Phase I Environmental Site Assessment (ESA) and limited soil sampling report prepared by STRATA (2010) and subsequent Phase I ESA Addendum prepared by TerraGraphics (2010) as part of development of a SAP for this Phase II ESA. The following is based on information documented in the prior 2010 ESA reports:  Herbicides and pesticides were applied to the areas of the railroad spur line. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 2  Creosote-treated railroad ties were used along the spur line, and subsequently stored on or near the former spur line once abandoned.  Clinkers may be present that may contain metals. 1.2.1 Soil Investigation Methods and Observations Strata reported the presence of an approximately 1-foot thick layer of fill at the surface that may cover the former spur line. The upper fill layer consisted of ¾-inch minus gravel with silt, and fragments of railroad tie. Underlying the 1-foot thick fill was 1-inch minus gravel that may represent the former railroad grade. The thickness of the underlying fill layer/possible railroad grade is unknown. Tetra Tech understands that STRATA (2010) collected three composite soil samples consisting of 10 subsamples each. The composite samples were collected from along the spur line. One composite soil sample was collected from the northern portion of the east parcel, one composite soil sample was collected from the southern portion of the east parcel, and one composite soil sample was collected from the southern portion of the west parcel. STRATA indicated that during sampling, the top 1-foot of fill material was removed and the composite samples were collected from the underlying soil which was assumed to coincide with the former railroad grade. No soil samples were reportedly collected from the overlying fill material that contained fragments of railroad tie. TerraGraphics (2010) collected two composite samples comprised of seven subsamples. One composite soil sample was collected from each of the two site parcels. TerraGraphics did not specify the soil sample depth so it is unknown whether the soil samples were collected from the overlying fill material or from the underlying railroad grade. 1.2.2 Soil Sample Analytical Results Samples collected by Strata were analyzed for Resource Conservation and Recovery Act (RCRA) metals (EPA method 200.8/6020), pesticides (EPA method 8270), and semi-volatile organic compounds (SVOCs; EPA method 8270). Soil samples collected by TerraGraphics were analyzed for polynuclear aromatic hydrocarbons (PAHs; EPA method 8270). Analytical results from the sampling events indicated concentrations of arsenic, lead, and PAHs were present at concentrations exceeding IDEQ Initial Default Target Levels (IDTLs) and several PAH constituents also exceeded EPA Regional Screening Levels (RSLs) for residential and/or industrial use. No pesticide constituents analyzed were detected at or above the laboratory practical quantitation limit (PQL). 1.3 Topography The U.S. Geological Survey (USGS) 7.5-Minute topographic map of Moscow West depicts the Site as part of an urban, or developed area of the City of Moscow located in the Southeast ¼ of Section 7, Township 39 North, Range 5 West of the Boise Meridian. The elevation of the Site is approximately 2,560 feet above mean sea level (AMSL). The topographic map indicates the ground surface in the vicinity of the Site slopes generally to the west. 1.4 Geology and Hydrogeology The subject property is located on a small eastern embayment of the Columbia River Plateau (Alt and 1989), near the western foothills of the Rocky Mountains. The Columbia ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 3 River Plateau was originally created by a series of basalt flows. Approximately 17 million years ago basalt flows erupted to cover portions of northeast Oregon, southwest Washington and western Idaho, including the Moscow area. Intrusive granitic rocks in the Moscow-Pullman area belong primarily to the Cretaceous-Tertiary aged Idaho Batholith and commonly range in composition from quartz-monzonite to granite and quartz diorite (Alt and 1989). To the north and northeast there are undifferentiated Idaho Batholith rocks. Accompanying and following emplacement of the Idaho Batholith was a period of extensive erosion. The basalt that erupted from vents during an 11 million year period in the Miocene Era filled lowlands. The Palouse Hills of the area are silt dunes that formed when the climate of the area was extremely dry. The dunes may have been present prior to the ice ages that reached the area thousands of years ago (Alt and 1989). The Palouse Hills silt covers most of the basalt in the Moscow area, with varying thicknesses. Groundwater flow direction for the Site and site vicinity is anticipated to be in a westerly direction. This assessment was based on: 1) information provided by the Palouse Watershed Conservation District and Palouse Basing Aquifer Committee (Tetra Tech, 2012); 2) professional knowledge of the general groundwater flow direction for the Moscow area being to the west: 3) local observations of the topography in the vicinity of the Site: 4) the general surface gradient of the site vicinity; and 4) surface drainage observed as generally being from east to west across the Site (Tetra Tech, 2012). 1.5 Purpose of Project The City of Moscow was awarded an EPA Brownfields Assessment Grant in August 2010 to perform assessments on properties with real or perceived contamination in the Moscow, Idaho area. The Dumas Spur Site was selected as one of the properties to evaluate. The Site is located within a former railroad/industrial corridor and was previously used to service the Dumas Seed facility located east of the Site. The purpose of this project was to investigate soil and groundwater at the Site to evaluate whether past use of the Site as a railroad spur line have resulted in impacts to soil and/or groundwater. Results from the investigation were reviewed and compared with applicable soil screening levels and groundwater standards. A risk assessment was also performed to evaluate what, if any, potential risk the Site poses to human health and the environment. Information obtained during this investigation will be used during any potential cleanup needed and in the future to evaluate potential redevelopment options. 1.6 Contaminants of Potential Concern The Site was used as a railroad spur line in the past. Based on soil sampling results from prior investigations by TerraGraphics (2010) and STRATA (2010), Tetra Tech developed a list of contaminants of potential concern (COPCs) for the Site. The following table presents the COPCs. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 4 CONTAMINANTS OF POTENTIAL CONCERN Contaminant Origin PAHs Railroad ties Metals Possible coal clinkers ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 5 2.0 SCOPE OF WORK AND OBJECTIVES The following sections present the site-specific scope of work, project objectives and data quality objectives (DQOs) for this Phase II ESA. The Master QAPP (TerraGraphics, 2011) presents DQOs for the overall brownfield project. 2.1 Scope of Work The scope of work was developed based on information obtained during review of prior investigations. Prior soil sampling provided screening-level assessments for the spur line which consisted of composite sampling at one consistent depth (i.e. 1-foot) for the Strata work and an unknown depth for the TerraGraphics sampling work. The two assessments did not include sampling of the adjoining ROW area or assess the lateral or vertical extent of contamination. Neither investigation evaluated potential impacts to groundwater. Tetra Tech identified a number of remaining data gaps during review of the prior ESA work. This information is needed to effectively characterize the Site, evaluate site risk, as well as perform cleanup planning and cleanup, if warranted. The data gaps are as follows:  Vertical depth of contamination has not been defined. Additional depth-integrated soil sampling was needed to evaluate the vertical distribution of COPCs. During the previous investigations, no known sampling was completed to characterize the upper 1-foot of fill or to characterize former railroad spur grade soil at depth. Characterization of the upper 1-foot of fill material was needed to evaluate potential risks from surface soil. If the soil is contaminated it would need to be included in any cleanup considerations. If the soil is clean, the layer may be preserved for use as backfill during remedial action or redevelopment of the Site. Soil at depth along the former spur line also needed to be evaluated. Sampling soil at depth would help evaluate whether the former railroad grade had been removed or only covered and whether impacts exist within the railroad grade soils. Assessing concentrations of COPCs vertically will aid in: 1) evaluating risk to receptors; 2) evaluating potential impacts to groundwater and/or surface water in Hog Creek; and 3) aid in cleanup planning (e.g. cleanup alternatives, estimating soil removal or treatment volumes, estimating cleanup alternative costs).  Horizontal extent of contamination has not been defined. Prior sampling focused on the former railroad spur line but did not investigate the adjoining ROW. Additional horizontal soil sampling was needed to evaluate the horizontal distribution of COPCs in soil laterally across the Site. This is critical for the same reasons as those listed above for vertical soil characterization.  Groundwater impacts have not been evaluated. Groundwater should be sampled to evaluate potential impacts to groundwater beneath the Site from potential vertical migration of on-site COPCs and/or prior impacts to Hog Creek that may interface with groundwater. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 6 The scope of work for this Phase II ESA consists of four main tasks: 1. Sample surface soil and shallow subsurface soil along the former railroad spur line to evaluate potential historic impacts from railroad ties and operation as a railroad line. 2. Sample the railroad spur ROW to evaluate what, if any, surface soil impacts there may be related to operation of the former spur line. 3. Sample subsurface soil at the air-water interface in three subsurface soil borings. Complete the soil borings as groundwater monitoring wells. 4. Develop the three monitoring wells and collect groundwater samples to evaluate potential impacts to groundwater. 2.2 Project Objectives The objective of this Phase II ESA was to complete a soil and groundwater assessment of potential environmental impacts, if any, associated with the former use of the Site as a railroad spur line. The data obtained during the investigation was compared to applicable screening and/or cleanup levels. The City of Moscow is currently considering two potential redevelopment strategies, including:  Scenario 1: Public park, bike path, and day-lighting of Hog Creek.  Scenario 2: Public park, bike path, construction of two residential housing units, and day- lighting of Hog Creek. The goal of the investigation was to provide sufficient data to perform a risk assessment, evaluate potential cleanup alternatives that are protective of human health and the environment, and, in the future, aid in evaluating potential redevelopment plans. Depending upon the results, additional remedial assessment may be required to support remedial action planning and remedial action. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 7 3.0 PHASE II ESA INVESTIGATION METHODS The following sections present the methods of investigation that were used during this Phase II ESA and reporting of the data. Field work was completed in accordance with a site-specific health and safety plan (HASP) prepared for this project that met Occupational Safety and Health Administration (OSHA) requirements. Field personnel also used Tetra Tech’s Standard Operating Procedures (SOPs) presented in the SAP (Tetra Tech 2012) as guidance during the Phase II ESA investigation. 3.1 Utility Locates Tetra Tech contacted utility locators to coordinate buried utility line locates prior to implementation of the field investigation. Surface traces of buried utilities were used, if necessary, to field-adjust the final locations of soil borings and wells. 3.2 Deviations to the SAP The Phase II ESA was conducted in accordance with the project SAP (Tetra Tech, 2012) and there were no deviations. 3.3 Data Evaluation The Master QAPP (TerraGraphics, 2011) was used as a general guide for personnel involved with field activities, evaluation of the data, and reporting for data evaluation for this investigation. Where there were differences between the QAPP and SAP, the SAP took precedence. Tetra Tech also performed data evaluations following EPA Contract Laboratory Program (CLP) national functional guidance documents for both inorganic and organic data review (EPA, 2011 and 2008, respectively). Data evaluation reviews were included in laboratory analytical data reports in the Phase II ESA report. 3.4 Soil and Groundwater Investigation Methods The Phase II ESA field investigation consisted of three main sampling tasks:  Performing incremental sampling methodology (ISM) area-wide surface soil sampling to evaluate potential impacts associated with historic use as a railroad spur and ROW. ISM area-wide sampling was also performed for subsurface soil along the railroad spur to evaluate the former railroad grade soil.  Performing subsurface soil sampling at monitoring well locations to evaluate potential contaminated soil in contact with groundwater.  Installing and sampling three groundwater monitoring wells to characterize groundwater flow and quality at the Site with regards to the potential impacts related to the identified COPCs. Field personnel documented all field activities on field logs, in the field notebook, and on field maps. Photographs were taken to document site investigation activities. The following sections discuss the investigation tasks and methods. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 8 3.4.1 Area-Wide Surface Soil Investigation Field personnel implemented ISM soil sampling for surface soil across the Site and shallow subsurface soil along the former railroad spur line. ISM is a structured composite sampling and processing method (ITRC, 2012). ITRC developed ISM to help reduce data variability, resulting in a relatively unbiased estimate of mean contaminant concentrations for the soil area and volume sampled. For this project, implementation of ISM included four main components: 1) defining the decision units; 2) defining the sampling units; 3) developing the random sampling design; and 4) developing the methods of sample collection, processing, and analysis. The following sections discuss implementation of ISM for the Site. 3.4.1.1 Decisions Unit Delineation The Site consists of two parcels of property divided by a north to south trending alley. As shown on Figure 2, the former railroad spur traversed east to west through the central portion of the Site with ROW adjoining the spur on the north and south. Hog Creek also runs below grade through the south ROW. Tetra Tech defined three decision units (DUs) for the Site based on the current site use and potential future use. Those three decision units consisted of the following:  North Decision Unit (NDU) – NDU consists of the ROW in the east parcel located immediately north of the former railroad spur.  Railroad Decision Unit (RDU) – RDU consists of the former railroad spur in both the west parcel and east parcels.  South Decision Unit (SDU) – SDU consists of the ROW located south of the former railroad spur in both the west and east parcels. Hog Creek runs below the surface through SDU. 3.4.1.2 Sampling Unit Delineation Within ISM, there is an option to divide the DUs into smaller sampling areas, or sampling units (SUs). Because the DUs are relatively small, Tetra Tech did not divide the DUs into SUs. Hence, each DU is one single SU. Data obtained from each of the DUs/SUs were used to evaluate concentrations of COPCs and used in the site-specific risk assessment to evaluate potential risk associated with each DU. 3.4.1.3 Random Sample Design The ISM process consists of collecting numerous sample increments (i.e. multi-increment samples or subsamples) of equal aliquots of soil from the specified SUs. These subsamples are combined into one ISM sample per SU, or for this project, each DU since the DUs were not sub- divided into smaller SUs. For this project, field personnel collected soil from 30 random subsample locations per each ISM sample (see Section 3.4). Tetra Tech used graphic information system (GIS) technology to generate 30 random soil subsample locations for each DU. Figure 2 shows the soil sample locations. GIS was also used ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 9 to generate soil duplicate and soil triplicate sample locations for NDU (see QC Section, Section 3.5). 3.4.1.4 Soil Sample Collection, Processing, and Analysis Field personnel collected one ISM sample from each DU at the 0- to 1-foot depth interval to evaluate surface soil within the three DUs. Each ISM sample was comprised of 30 subsamples. Two additional ISM samples were collected from RDU to characterize shallow subsurface soil that is anticipated to represent the former railroad spur grade soil that was reportedly covered with one foot of road base fill. These two additional ISM samples within the RDU were collected from the 1- to 2-foot and 2- to 3-foot depth intervals (Figure In summary, samples were collected from each DU as follows:  NDU – One ISM sample from the 0- to 1-foot depth interval. One duplicate and one triplicate sample were collected from NDU (see Section 3.7).  SDU – One ISM sample from the 0- to 1-foot depth interval.  RDU – One ISM sample from the 0- to 1-feet, one ISM sample from 1- to 2-feet, and one ISM sample from 2- to 3-feet. Soil samples were collected by hand excavating to 1-foot in NDU and SDU. Field personnel contracted with Roach Construction of Genesee, Idaho to excavate the RDU sample locations using a mini-excavator. The mini-excavator excavated to 3 feet bgs for sample collection over the three depth intervals. Samples were labeled according to their site name (Dumas Elevator Spur; decision unit from which the sample was obtained (i.e. RDU). Since the sampling units are the same as the decision units, no separate designation was included to identify the sampling unit. As an example, the ISM sample obtained from the northern-most sampling unit and collected from the 0- to 1-foot soil depth interval was labeled as follows: DES-NDU(0-1’). Field personnel also documented the date and time of sample collection. 3.4.1.5 Soil Sample Processing Field personnel excluded rock that were 1-inch or larger in size from the samples and any debris in the sample (e.g. wood). ISM recommends screening of soil through a 10-mesh screen; however, based on discussions with IDEQ and the City of Moscow, screening was not required for this investigation. Field personnel homogenized each ISM sample as possible, as each aliquot was collected and prior to transfer to laboratory-provided sample jars. The volume submitted to the laboratory was prescribed by the laboratory. Following final sample collection, the soil sample jars were placed in a cooler containing doubled re-sealable bags filled with ice for preservation. 3.4.1.6 Soil Sample Analysis Surface soil and shallow subsurface soil samples were submitted to Lancaster Laboratories (Lancaster) in Lancaster, and analyzed for parameters presented in the following table. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 10 SURFACE AND SHALLOW SUBSURFACE SOIL ANALYSES Media Number of Sampling Units (SU) Total Number of DU Soil Samples Number of QA/QC Samples Total Number of Natural and QC Samples for Analysis Analytical Parameter Sample Jar Requirements Surface and Shallow Subsurface Soil 3 5* 8 8 RCRA metals by EPA Method 200.8/6020 PAHs by EPA 8270 1-125 ml wide mouth glass *1 natural sample each from NDU, RDU, SDU. soil duplicate, 1 soil triplicate, 1 rinsate blank (see Section 3.7 3.4.2 Subsurface Soil Investigation Tetra Tech contracted with Environmental West to use direct-push technology (DPT) to install three subsurface soil borings in an upgradient, a central, and a downgradient location at the Site. The borings were advanced approximately 5 feet below first encountered water to accommodate monitoring well installation, anticipated to be between 15 and 20 feet bgs. Figure 2 shows the boring/well locations. Field personnel continuously logged the soil encountered in each boring to document soil characteristics (e.g. color, grain size, moisture, etc.) and any staining, odor, or debris encountered. Once water was encountered, the boring was allowed to rest to evaluate the static water level. Subsurface soil samples were collected from the air-water interface in each boring to evaluate potential contamination in contact with water. Subsurface soil samples were submitted to Lancaster and analyzed for parameters in the following table. SUBSURFACE SOIL ANALYSES Media Number of Sample Locations Number of Proposed Samples Number of QA/QC Samples Total Anticipated Number of Samples Collected for Analysis Analytical Parameter Sample Jar Requirements Subsurface soil 3 3 1 Field Blank 4 8 RCRA metals by EPA Method 200.8/6020 PAHs by EPA 8270 1-125 ml wide mouth glass Samples were labeled according to their site name (Dumas Elevator Spur; the monitoring well location, and depth interval from which the soil sample was collected. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 11 3.4.3 Monitoring Well Installation and Groundwater Sampling 3.4.3.1 Monitoring Well Installation Tetra Tech completed each of the three borings as groundwater monitoring wells at the Site to evaluate potential impacts from historic use. Figure 2 shows the proposed monitoring well locations. The purpose of each well was as follows:  DES-MW-1: This well is a potential background well installed to evaluate water quality upgradient of anticipated on-site impacts. This well also provided information from potential contaminants that may be migrating from the former Dumas Seed facility located immediately east of the Site.  DES-MW-2: This well was installed in the central portion of the Site to evaluate impacts from the former railroad spur.  DES-MW-3: This well was installed near the western site boundary to evaluate water quality in the western portion of the Site and water quality migrating off site. Monitoring wells were constructed according to State of Idaho regulations and consisted of ¾-inch diameter schedule 40 (PVC) well screen and casing. Factory slotted 0.010-inch PVC well screen was incorporated in the lower 10 feet of each well. The sand filter pack around the well screen extended approximately 1 foot above the screened interval. Bentonite chips extended from the top of the filter pack to approximately 1-foot bgs, followed by cement for the surface completion. Each well was completed with a flush-mount surface casing for protection. Following well installation, field personnel developed each monitoring well by evacuating water using a peristaltic pump to remove fine-grained material and improve communication with the water-bearing strata. Wells were allowed to rest for approximately 24 hours prior to groundwater sampling. All monitoring well locations were located using a resource grade hand held GPS unit. Depth to water measuring points were established on the north side of the monitoring well casing and the point surveyed by Tetra Tech field personnel to an arbitrary local datum using a portable level and survey rod. 3.4.3.2 Groundwater Monitoring and Sampling Depth to water was measured in all three wells prior to conducting the sampling effort. Groundwater sampling was completed using a peristaltic pump with dedicated disposable tubing and the EPA low-flow purge method. Field personnel recorded pH, specific conductance (SC), oxidation-reduction potential (ORP), dissolved oxygen (DO) and temperature during well purging. Purging was considered completed when field parameters stabilized to ±10%. Following well purging, groundwater samples were obtained from each well and submitted to Lancaster for analysis of parameters in the following table. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 12 GROUNDWATER ANALYSES Media Number of Sample Locations Number of Proposed Samples Number of QA/QC Samples Total Anticipated Number of Samples Collected for Analysis Analytical Parameter Sample Bottle Requirements Groundwater 3 3 1 Duplicate 4 8 RCRA metals by EPA Method 200.8/6020 (total metals) PAHs by EPA 8270 1-250 ml wide mouth plastic w/HNO3 2-1000ml round amber glass 3.5 Quality Assurance/Quality Control (QA/QC) Sample Requirements Five quality control (QC) samples were collected for this investigation. The following table presents the number and type of QC samples. FIELD QA/QC SAMPLE OBJECTIVES QC Sample Purpose Frequency Number of QC Samples for Phase II ESA QA Objective Field Groundwater Duplicate Measure analytical precision 1 per event 1 30% RPD for water Field Soil Duplicate Measure analytical precision 1 per project – collected from NDU (Figure 2) 1 50% RPD for soil Field Soil Triplicate Measure analytical precision 1 per project – collected from NDU (Figure 2) 1 50% RPD for soil Equipment Rinsate Blanks Measure of accuracy and representativeness. Quantify artifacts introduced during sampling, decontamination, transport from ambient air, and in decontamination water supply, or analysis of sample. 1 per project 1 – soil Target analytes not detected Field Blank Measure of accuracy and representativeness. Quantify artifacts introduced during sampling, decontamination, transport from ambient air, and in decontamination water supply, or analysis of sample. 1 per project 1 - Groundwater Target analytes not detected RPD – Relative percent difference - Dedicated disposal sample equipment will be used for water sampling; therefore, no equipment rinsate blank for groundwater is prescribed. No trip blank proposed since there will be no analysis for volatile organic compounds for this project. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 13 Field personnel collected the soil duplicate and soil triplicate samples from NDU. Figure 2 shows the duplicate and triplicate sample locations where the soil subsamples were collected. Sample collection, documentation, decontamination, and handling procedures were consistent with those described in Sections 3.4 and 3.5. In addition to the above, the analytical laboratory analyzed laboratory control samples, method blanks, matrix spike/matrix spike duplicates, and other QA/QC analyses as per method requirements to ensure data quality. 3.6 Waste Disposal Soil removed from the shallow hand-excavated test pits was replaced in the excavation. Purge water generated during monitoring well development and sampling was thin-spread in the general vicinity of the well that was sampled. 3.7 Risk Analyses Tetra Tech conducted a numerical risk evaluation using modeling software provided by the IDEQ and Risk Evaluation Manual (REM). User inputs into the model include contaminant concentrations and the potentially completed exposure pathways. The model includes default values for various parameters but can use site specific data if sufficient justification for modifying the parameters can be provided. General model setup and model running follows the below steps: 1. Identify receptors and pathways (e.g. residential, non-residential and construction worker receptors, soil and groundwater pathways, etc.); 2. Enter representative contaminant concentrations and site-specific parameters; 3. Software generates a cumulative risk and hazard index values for each receptor and exposure pathway; and 4. Software generates RATL-1 values which then may be used as cleanup levels in a cleanup plan to remediate the site. The risk evaluation model determines whether the concentrations of the COPCs pose a risk to human health or the environment and develops remedial action target levels (RATLs) for each COPC in each media identified in the exposure pathway and for each potential receptor. In order to be most protective of human health, the lowest RATL generated by the risk evaluation for each COPC generated was chosen to compare with COPC concentrations in each media. A discussion of the information used to conduct the risk evaluation is presented below. 3.7.1 Exposure Assessment The City of Moscow is currently considering two potential redevelopment scenarios for the Site. Tetra Tech considered these scenarios for purposes of completing the exposure assessment, The scenarios include:  Scenario 1: Public park, bike path, and day-lighting of Hog Creek. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 14  Scenario 2: Public park, bike path, construction of two residential housing units, and day- lighting of Hog Creek. The exposure assessment for Scenario 1 assumed potential receptors consisted of non- residential receptors and construction workers. The exposure assessment for Scenario 2 assumed potential receptors consisted of residential receptors, non-residential receptors and construction workers. Routes of exposure by media for both scenarios consisted of surficial soil, subsurface soil, and groundwater. In addition, because SDU includes the Hogg Creek stream channel and the fact that Hogg Creek lies in such close proximity to the other two SDUs and has potential to receive runoff from these areas, the default value of zero was selected as the distance to surface water. 3.7.2 Contaminant Concentrations Representative concentrations of COPCs in surface soil, subsurface soil and groundwater were determined using guidance provided in the IDEQ’s REM. For this evaluation, the highest concentration for each analyte detected above the laboratory practical quantitation limit (PQL) in the affected media was used in the model as this would generate results considered the most protective of human health and the environment. With regards to residential receptors, the highest concentration in surface soils was considered. With regards to non-residential receptors, the highest concentrations in subsurface soil were considered. Since construction workers have the potential to be exposed to both surface soil and subsurface soil, the highest concentration for the COPC in either media was used in the risk assessment. A list of the COPCs and their representative concentrations for each receptor is included in the IDEQ Input Forms (Appendix 3.7.3 Exposure Factors The exposure factors quantify the parameters through which receptors are potentially exposed to COPCs at a site. The default exposure factors in IDEQ’s REM software were used for the risk calculation. 3.7.4 Fate and Transport Parameters Fate and transport factors quantify site-specific parameters including the separation between the soil and groundwater sources and the foundation of any building at the Site. There weren’t any structures on the Site during the field investigation. Scenario 2 (Section 3.7.1) includes potential construction of two residential units; however, specific information including the type, size and locations of the structures has not yet been determined. For this evaluation, the default values for fate and transport parameters were used in the risk calculation. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 15 4.0 PHASE II ESA INVESTIGATION RESULTS The following sections present a discussion of the data validation conducted by the analytical laboratory and Tetra Tech, analytical results of soil and groundwater samples obtained as part of this Phase II ESA, and results of the risk analysis. Referenced figures and tables are presented in Appendices A and B, respectively. Laboratory analytical data reports for soil and groundwater samples obtained during this investigation are contained in Appendix C. Appendix D presents copies of field logs completed during installation of soil borings and groundwater sampling. Copies of IDEQ risk evaluation software output sheets are contained in Appendix E. 4.1 Data Evaluation Soil and water samples for this project were submitted to Eurofins Lancaster Laboratories in Lancaster, for analysis. Tetra Tech completed an evaluation of the analytical laboratory reports for this project using EPA CLP National Functional Guidelines to direct qualification of data. Additional details regarding data evaluation are included in the Master QAPP (TerraGraphics 2011). The following sections provide a summary of data evaluation with respect to the field and laboratory QA/QC data. A QC summary provided by the laboratory is included in the laboratory analytical reports in Appendix C. 4.1.1 Laboratory Quality Control Samples A review of the laboratory evaluation of sample QA data indicates that fluoranthene (116%) was outside the specified limits in the laboratory control sample. In addition, fluoranthene (112%) was also outside of specified limits in the sample matrix quality control sample: Discussions with the analytical laboratory representative indicated that these results were a consequence of matrix issues and not an analysis issue and; therefore, did not affect the quality of the data. The analyst stated that according to the analytical methods, no qualification of the data was required. In addition, several compounds were detected in soil and groundwater samples at concentrations equal to or greater than the analytical method detection limit (MDL) but less than the analytical method limit of quantitation (LOQ; aka PQL). Those concentrations were qualified by the laboratory with a indicating the value is estimated. 4.1.2 Field Quality Control Samples 4.1.2.1 Field Duplicate and Triplicate Soil Samples One ISM field duplicate soil sample was obtained from DES-NDU during the November 2012 field sampling event. Recoveries for all of the constituents detected in the natural and duplicate sample were within acceptable criteria. No qualification of the data was required. One ISM field triplicate soil sample was obtained from DES-NDU during the November 2012 field sampling event. Recoveries for all of the constituents detected in the natural and triplicate sample were within acceptable criteria. No qualification of the data was required. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 16 4.1.2.2 Groundwater Duplicate Sample A duplicate groundwater sample was obtained from well DES-MW-2 during the November 2012 groundwater monitoring event. The only constituent detected in the natural and duplicate sample was barium. The recovery of barium in the natural and duplicate sample was within acceptable criteria. No qualification of the data was required. 4.1.2.3 Equipment Rinsate Blank (Equipment Blank) One equipment rinsate blank was collected by field personnel during this investigation and exhibited concentrations of naphthalene, phenanthrene and barium that were greater than the MDL but less than the LOQ. The associated results were qualified as estimated, 4.1.2.4 Field Blank The field blank prepared by field personnel using deionized water provided by the analytical laboratory exhibited detectable concentrations of naphthalene and barium that were greater than the MDL but less than the LOQ. The associated results were qualified as estimated, These data may either indicate low level concentrations of those constituents in the sample container, deionized water provided by the laboratory or cross contamination in the laboratory 4.2 Soil and Groundwater Sample Results The following section presents a discussion of field and laboratory analytical results of soil and groundwater samples obtained during this Phase II ESA investigation. As directed by the Master QAPP (TerraGraphics, 2011), analyte concentrations in soil and groundwater samples obtained as part of this investigation were compared against IDEQ REM IDTLs (IDEQ, 2004) in order to evaluate whether the COPC concentrations exceeded maximum media specific contaminant concentrations. As per IDEQ, arsenic concentrations in soil were also compared to the 15 milligrams per kilogram (mg/kg) background soil concentration established for the Spokane, Washington area (WDOE 1994), and lead concentrations were also compared to 400 mg/kg, EPA’s Regional Screening Level (RSL) for lead in residential soil (EPA 2012). 4.2.1 Site-Wide Surface Soil Samples Surface soil encountered in the hand-excavated test pits varied across the Site but in general consisted predominantly of dark brown to gray to black sandy silt with gravel. Some woody debris was encountered in the test pits excavated in NDU. The woody material appeared to be associated with surrounding brush and trees in the NDU. Some debris, such as metal plates, and limited amounts of plastic, were encountered within the top foot of soil in several test pit locations within the RDU. None of the surface soil samples exhibited visual or olfactory indications of contaminants. The surface soil samples were generally moist to wet which was likely the result of recent snow and rain precipitation events that occurred in the Moscow area during the days prior to and during the field investigation. Tables 1A, 1B and 1C present analytical results of ISM samples obtained from NDU, SDU and RDU, respectively. The RATL-1 values reported in those tables were generated using Scenario 2 exposure pathways, which included residential (child and age-adjusted) receptors and used the most conservative concentrations. Figure 2 shows the locations of the ISM soil samples and the three monitoring wells. A review of those data indicates the following: ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 17 NDU (Table 1A):  The ISM surface soil samples [DES-NDU DUPLICATE and TRIPLICATE], exhibited concentrations of arsenic, lead and mercury exceeding the corresponding IDTLs.  Arsenic concentrations in each of the three surface soil samples exceeded the RATL-1 (0.488 milligrams per kilogram (mg/kg)) but were less than the background soil concentration established for the Spokane, Washington area (15 mg/kg; WDOE 1994).  Lead concentrations in each of the three surface soil samples exceeded the RATL-1 (49.6 mg/kg) but were less than the EPA RSL for lead in residential soil (EPA 2012).  The mercury concentrations exceeded the IDTL (0.00509 mg/kg) were less than the RATL-1 value (1.81 mg/kg) generated using the IDEQ software.  Surface soil samples obtained from NDU exhibited detectable concentrations of each of the PAHs. Only the benzo pyrene concentration exceeded IDTL and RATL-1 values. SDU (Table 1B):  The ISM surface soil sample (DES-SDU exhibited concentrations of arsenic and lead exceeding the corresponding IDTLs.  The arsenic concentration exceeded the RATL-1 but was less than the background soil concentration established for the Spokane, Washington area (15 mg/kg; WDOE 1994).  The lead concentration exceeded the RATL-1 but was less than the EPA RSL for lead in residential soil (EPA 2012).  The surface soil samples exhibited detectable concentrations of each of the PAHs. Concentrations of benzo anthracene, benzo pyrene, benzo fluoranthene, dibenz (a,h) anthracene and indeno (1,2,3-cd) pyrene exceeded their corresponding IDTLs and RATL-1 values. RDU (Table 1C):  ISM surface soil sample (DES-RDU exhibited concentrations of arsenic and mercury exceeding the corresponding IDTLs. The arsenic concentration exceeded the RATL-1 but was less than the background soil concentration established for the Spokane, Washington area (WDOE 1994). The mercury concentration was less than the RATL-1 value. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 18  The ISM surface soil sample also exhibited detectable concentrations of the majority of PAH constituents. The concentrations of benzo(a)anthracene, benzo(a)pyrene, benzo(a)fluoranthene, benzo(g,h,i)perylene and indeno(1,2,3-cd)pyrene exceeded their corresponding IDTLs and RATL-1 values.  The ISM subsurface samples [DES-RDU and DES-RDU did not exhibit metals or PAHs exceeding their corresponding IDTLs. Arsenic and lead were the predominant metals detected in the surface soil samples obtained from the three decision units that exceeded IDTLs and RATL-1 values. However none of the concentrations of arsenic and lead exceeded the soil cleanup concentrations established for arsenic in the Spokane, Washington area (15 mg/kg; WDOE 1994) or the EPA RSL cleanup level for residential soil (400 mg/kg; EPA 2012), respectively. PAH compounds were identified in the majority of surface soil samples obtained from each of the three decision units. The Site was historically used as a railroad spur and later stored railroad ties that had been treated with compounds, which likely contained PAHs. Over time the PAHs may have migrated from the railroad ties into surface soils across the Site and may have been further redistributed by site grading activities. Section 4.3 discusses the results further in relation to the risk assessment analysis performed for the Site. 4.2.2 Monitoring Well Installation and Sampling 4.2.2.1 Subsurface Soil Sample Results The lithology encountered in the borings completed as groundwater monitoring wells generally consisted of varying thicknesses of silt, silty gravel and silty sandy gravel. Soil samples obtained from the borings were generally dry to moist at depths less than approximately 13 feet bgs. The air-water interface was encountered at approximately 13 feet bgs. All subsurface soil samples were collected from the approximate air-water interface. Collection depths ranged from 11 to 14 feet bgs. Table 2 summarizes laboratory analytical results of the three soil samples obtained from the borings completed as monitoring wells. Figure 2 shows the well locations. The following is a summary of that data:  The arsenic concentration in the subsurface soil sample collected from the boring DES-MW-3 exhibited arsenic at 15.1 milligrams per kilogram (mg/kg) which is higher than the 15 mg/kg surface soil cleanup level established for the Spokane, Washington area (WDOE 1994). However, arsenic was not detected above the laboratory PQL in groundwater collected from well MW-3.  Metals and arsenic concentrations in the remaining soil samples were either below the analytical reporting limit or below the IDTL and RATL-1.  Subsurface soil samples obtained at the groundwater interface in the three wells exhibited detectable concentrations of PAHs. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 19 4.2.2.2 Groundwater Analytical Results Appendix D provides the groundwater sample logs for samples obtained during the November 2012 monitoring event. Table 3 summarizes the groundwater laboratory analytical results. Figure 2 presents the location of the three monitoring wells (DES-MW-1 through DES-MW-3). Figure 3 presents estimated potentiometric surface using November 2012 monitoring data A review of the data indicates the following:  Depth to water measured in the three monitoring wells during the November 2012 monitoring event ranged from 3.55 feet below the measuring point in well DES-MW-3 to 4.46 feet below the measuring point in well DES-MW-1.  Groundwater elevations contours interpreted using November 2012 monitoring data indicate groundwater flow was to the west southwest under a relatively shallow gradient of 0.001 feet/foot.  The groundwater sample obtained from well DES-MW-1 exhibited an estimated concentration of total arsenic at 0.0130 micrograms per liter (µg/L), which is higher than the IDTL/RATL-1 of 0.001 µg/L.  Total lead concentrations in groundwater sampled from DES-MW-1 and DES-MW-3 were detected above the IDTL/RATL-1 0f 0.015 µg/L.  The remaining metals detected in the groundwater samples from all three monitoring wells were less than the corresponding IDTLs/RATLs.  None of the groundwater samples obtained from the three monitoring wells exhibited detectable concentrations of PAHs. Groundwater elevations above the screened interval in each monitoring well are likely indicative of either confined or semi-confined conditions. Soil samples obtained depths shallower than approximately 13 feet below grade did not exhibit indications of yielding water. Based on the laboratory analytical results of the groundwater samples obtained from the three monitoring wells, the data indicates PAHs detected in soil samples obtained across the three decision units have not migrated to the near-surface groundwater system at the Site. Groundwater samples were analyzed for total metals. Concentrations of total arsenic and total lead were detected in one or more groundwater sample above their respective IDTL/RATL-1. Concentrations of arsenic and lead above the IDTL/RATL-1 may be indicative of colloidal sediment entrained in the sample, rather than dissolved arsenic and lead. Additional sampling for total and dissolved metals would be needed to evaluate whether arsenic and lead are present in the dissolved phase. 4.3 Risk Analysis Tetra Tech ran the IDEQ risk model for both Scenario 1 and Scenario 2 to evaluate potential risk and hazards to potential receptors. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 20 4.3.1 Scenario 1 Scenario 1 includes potential development of a park and bike path, and day-lighting of Hogg Creek. Scenario 1 does not include evaluation with respect to residential receptors. The model compared risk and hazard results to a maximum cumulative risk value of 1x10-5 a maximum cumulative hazard index value of 1. When the risk evaluations were conducted using Scenario 1, the cummulative risk and hazard indices for each of the three decision units were within acceptable values. Therefore, no additional assessment or remedial action is required for development of the Site under Scenario 1. The RE-1 Summary of Risk and Hazard Index forms generated by the risk evaluation software for each of the three decision units using Scenario 1 is presented below. Appendix E presents the other model output forms. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 21 4.3.2 Scenario 2 The IDEQ risk evaluation software was run according to Scenario 2. Scenario 2 is the most conservative of the two scenarios because it includes the potential for residential development and residential receptors. The model compared risk and hazard results to a maximum cumulative hazard index value of 1 and a cumulative risk value of 1x10-5. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 22 The model results for Scenario 2 indicated concentrations of COPCs in soil pose an unacceptable risk to both child and age-adjusted residential receptors in all three decision units when site development includes construction of residential housing. The hazard indices for those receptors were less than the maximum cumulative value of 1, and were acceptable. Cumulative risk and hazard indices were also generated for non-residential and construction workers. The results indicated their respective cumulative risk and hazard indices were less than their corresponding maximum cumulative values for all three decision units. Therefore, concentrations of COPCs in soil in each of the three decision units pose an acceptable hazard and risk for non-residential and construction workers. Under IDEQ’s risk evaluation program, additional assessment or remediation is required if risk exceeds 1X10-5 or the hazard index exceeds 1. Therefore, additional assessment or remediation is required in order for the Site to meet criteria for residential development. The RE-1 Summary of Risk and Hazard Index forms generated by the risk evaluation software for each of the three decision units using Scenario 2 is presented below. Appendix E presents the other model output forms. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 23 ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 24 ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 25 5.0 SUMMARY AND RECOMMENDATIONS The Phase II ESA and risk evaluation at the Site identified concentrations of several COPCs in surface soil that exceed regulatory standards. Mercury exceeded the IDTL in all surface soil samples from the NDU but did not exceed the RATL-1 value. Arsenic and lead exceeded the IDTL in most surface soil samples collected but concentrations were below the arsenic soil screening level of 15 mg/kg established for the Spokane Valley area (WDOE 1994); and lead was below the EPA residential soil screening level of 400 mg/kg (EPA 2012). Arsenic in the subsurface soil sample collected from boring/well location DES-MW-3 exhibited a concentration of 15.1 mg/kg, above the 15 mg/kg surface soil cleanup level for the Spokane Valley of 15 mg/kg (WDOE 1994). Total arsenic was not detected above the laboratory PQL in groundwater collected from DES-MW-3; however, total arsenic concentrations in groundwater collected from MW-1 was above the IDTL/RATL-1 standards. In addition, total lead concentrations in groundwater collected from DES-MW-1 and DES-MW-3 exceeded the IDTL/RATL-1 standards. Concentrations of total arsenic and total lead detected in groundwater may be a result of colloidal sediment entrained in the groundwater sample, rather than arsenic and lead being present in the dissolved phase. Additional groundwater monitoring would be needed to further evaluate total and dissolved phases of arsenic and lead in groundwater. The majority of PAH constituents were detected in each of the surface soil and subsurface soil samples obtained from the three decisions units. Analytical data of soil samples obtained from the RDU decision unit indicate that concentrations of most of the COPCs decreased with depth. None of the subsurface soil samples obtained from RDU exceeded regulatory standards. Groundwater samples obtained from the three groundwater monitoring wells during the November 2012 monitoring event did not exhibit detectable concentrations of PAHs. The risk evaluation completed by Tetra Tech using the IDEQ risk model and REM indicated an unacceptable cumulative risk to both child and age-adjusted residential receptors in all three decision units, assuming site development according to Scenario 2 conditions. Additional assessment and/or remedial action would be required if the Site were to be redeveloped for residential housing. Model results indicated acceptable risk and hazard to non-residential and construction workers under Scenario 1 redevelopment criteria for all three decision units. Therefore, no further assessment or remedial action would be required prior to redevelopment of the Site as a park or bike path, or day-lighting of Hogg Creek. Based on model results and RATL-1s, PAHs appear to be the primary contaminant of concern at the Site. PAHs detected across the Site are likely a result of redistribution of contaminants from the primary rail bed to the adjoining ROW through site activities. Removing impacted surface soil at the Site to eliminate that route of exposure would likely reduce the cumulative risk to residential and non-residential receptors below 1X10-5, which would thereby allow unrestricted land use. If the City of Moscow determines that residential use of the Site was not part of the redevelopment strategy, additional measures may be required to eliminate future residential redevelopment without first performing site remediation. To ensure that the Site remains free of ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 26 residential redevelopment over the long term an institutional control may be required, as described by IDEQ REM (IDEQ 2004) as an Equitable Servitude and Conservation Easement (Servitude). The Servitude is a written agreement that is recorded in County records and whose purpose is to limit use of the Site and prevent activities that may disturb the impacted soil and/or provide an exposure pathway to receptors. ---PAGE BREAK--- FINAL Phase II Environmental Site Assessment Greater Moscow Area Coalition Brownfield Project Dumas Elevator Spur Site City of Moscow Moscow, Idaho Tetra Tech May 1, 2013 27 6.0 REFERENCES Alt, David D. and Donald 1989. Roadside Geology of Idaho. Mountain Press Publishing Company, Missoula, Montana. 394pp. Idaho Department of Environmental Quality (IDEQ), 2004. 2004 IDEQ Risk Evaluation Manual. April. Idaho Department of Environmental Quality (IDEQ), 2011. IDAPA 58.01.24 – Standards and Procedures for Applications of Risk Based Corrective Action at Petroleum Release Sites Interstate Technology & Regulatory Council (ITRC), 2012. Incremental Sampling Methodology. February 2012. STRATA, Inc., 2010. Phase I Environmental Site Assessment with Limited Soil Sampling, Lilly and Asbury Properties, Moscow, Idaho. Prepared for City of Moscow. October 15. TerraGraphics Environmental Engineering, Inc., 2010. Phase I ESA Addendum: Limited Soil Sampling for Parcels 2 and 3 – Former Railroad Rights-of-Way. Prepared for University of Idaho Real Estate Office. April. TerraGraphics Environmental Engineering, Inc. 2011. Master Quality Assurance Project Plan for the City of Moscow Phase II Environmental Site Assessments, Moscow, Idaho. Prepared for City of Moscow. October 31. Tetra Tech, 2012. Sampling and Analysis Plan, Phase II Environmental Sit Assessment, Dumas Elevator Spur Site, Lily and Asbury Street, Moscow, Idaho. September 21. United States Environmental Protection Agency (EPA), 2012. Regional Screening Levels (RSLs) Summary Table. Dated November 2012. United Stated Environmental Protection Agency (EPA), 2010. Contract Laboratory Program National Functional Guidelines for Inorganic Superfund Data Review. OSWER 9240.1-51, EPA 540-R-10-011. January 2010. United States Environmental Protection Agency (EPA), 2008. Contract Laboratory Program National Functional Guidelines for Superfund Organic Methods Data Review. EPA-540-R-08-01, June. United States Environmental Protection Agency (EPA), 1994. Guidance for the Data Quality Objectives Process. United States Environmental Protection Agency Quality Assurance Management Staff, Final, September. EPA/600/R-96/055. United States Environmental Protection Agency (EPA), 1998. Quality Assurance Guidance for Conducting Brownfields Site Assessment. States Environmental Protection Agency, Office of Solid Waste and Emergency Response, dated September. EPA/540-98/038 Washington Department of Ecology (WDOE), 1994. Natural Background Soil Metals Concentrations in Washington State. Toxics Cleanup Program, Department of Ecology. Dated October 1994. Publication# 94-115. ---PAGE BREAK--- APPENDIX A FIGURES ---PAGE BREAK--- Site 2011 National Geographic Society Topographic maps on ArcGIS Online: http://www.arcgis.com Figure 1 Location Map Moscow, Idaho ³ 050 SCALE IN FEET Dumas Elevator Spur P:\H-M\Moscow ID Brownfield\DumasElevSpur\arcmap\DumasElevSpur_LocMap.mxd Coordinate System: NAD 1983 StatePlane Idaho Central FIPS 1102 Feet Projection: Transverse Mercator Datum: North American 1983 Units: Foot US ---PAGE BREAK--- G:\Environmental\Moscow ID Brownfield\DumasElevSpur\arcmap\Proposal_DumasElevSpur_Figure1_Landscape.mxd ³ 0 50 SCALE IN FEET Figure 2 Site Map Moscow, Idaho Dumas Elevator Spur N. Asbury St. N. Asbury St. N. Lilly St. N. Lilly St. W. 1st. St. W. 1st. St. SDU SDU RDU RDU NDU NDU Unnamed Alley Unnamed Alley ! NDU Random Natural Sample Location XW NDU Random Duplicate Sample Location NDU Random Triplicate Sample Location RDU Random Sample Location #0 SDU Random Sample Location Approximate Decision Unit Boundary Approximate Property Boundaries NDU RDU SDU & < Monitoring Well DES-MW-3 DES-MW-2 DES-MW-1 ---PAGE BREAK--- G:\Environmental\Moscow ID Brownfield\DumasElevSpur\arcmap\Groundwater_DumasElevSpur_Figure3_Landscape.mxd ³ 0 50 SCALE IN FEET Figure 3 Potentiometric Surface Map Moscow, Idaho Dumas Elevator Spur N. Asbury St. N. Asbury St. N. Lilly St. N. Lilly St. W. 1st. St. W. 1st. St. Unnamed Alley Unnamed Alley & < DES-MW-3 DES-MW-2 DES-MW-1 995.30 995.28 995.40 995.50 995.42 995.54 Groundwater Elevation Countour (dashed where infered) 995.30 Relative Groundwater Elevation (feet) $ Groundwater Flow Direction $ November 2012 Approximate Property Boundaries Monitoring Well Note: Contours are Estimated ---PAGE BREAK--- APPENDIX B TABLES ---PAGE BREAK--- Sample ID IDEQ SOIL IDTL (mg/kg) RATL-1 (mg/kg) DES-NDU DES-NDU Duplicate DES-NDU Triplicate Date Collected 11/12/2012 11/12/2012 11/12/2012 Moisture (Method SM20 2540G) Moisture 20.6 19.0 17.9 Metals (EPA Method 6010B) Arsenic 0.391 0.488/15a 3.79 3.89 3.53 Barium 896 395 243 275 272 Cadmium 1.35 3.13 0.453 J 0.467 J 0.391 J Chromium 2,130 8,470 17.4 20.1 19.7 Lead 49.6 49.6b/400c 124 197 121 Mercury 0.00509 1.69 0.132 0.163 0.0948 Selenium 2.03 <0.706 0.768 J <0.720 Silver 0.189 28.2 0.142 J 0.183 J <0.140 Polynuclear Aromatic Hydrocarbons (EPA Method 8270C) Acenaphthene 52.3 147 0.016 J 0.004 J 0.014 J 78 147 0.049 0.019 0.019 Anthracene 1,040 720 0.061 0.029 0.06 Benzo anthracene 0.422 0.696 0.250 0.110 0.160 Benzo pyrene 0.022 0.0696 0.280 0.130 0.150 Benzo fluoranthene 0.422 0.696 0.350 0.180 0.220 Benzo (g,h,i) perylene 1,180 0.736 0.220 0.110 0.130 Benzo fluoranthene 4.22 527 0.130 0.066 0.080 33.4 52.5 0.240 0.120 0.160 Dibenz (a,h) anthracene 0.422 0.0527 0.049 0.035 0.030 Fluoranthene 364 97.4 0.50 0.19 0.320 Fluorene 7.36 94.7 0.016 J 0.005 J 0.027 Indeno (1,2,3-cd) pyrene 0.422 0.527 0.180 0.094 0.110 Naphthalene 1.14 7.1 0.033 0.019 0.020 Phenanthrene 79 73.6 0.220 0.081 0.220 Pyrene 359 73.2 0.460 0.180 0.260 Notes: IDEQ - Idaho Department of Environmental Quality IDTLs - Initial Default Target Levels RATL-1 - Remedial Action Target Level -1 (Exposure pathway inlcudes residential receptors). IDTLs, RATL-1s and analyte concentrations reported in miligrams per kilogram (mg/kg) a - Background arsenic concentration for the Spokane, Washington area is 15 mg/kg. b - The risk evaluation software does not generate an RATL-1 for lead therefore the IDTL is reported. c - The EPA regional screening level (RSL) and Bunker Hill Superfund Site cleanup standard for lead in soil (400 mg/kg). EPA - U.S. Environmental Protection Agency No No RATL-1 listed due to lack of detection is soil sample. < - Analyte not detected at or above the laboratory analytical method detection limit (MDL) Bold - Concentration is equal to or exceeds the MDL. - Concentration is equal to or exceeds the IDTL - Concentration is equal to or exceeds the RATL-1 and IDTL TABLE 1A ISM SURFACE SOIL ANALYTICAL RESULTS - NDU DUMAS ELEVATOR SPUR SITE Lily and Asbury Streets Greater Moscow Area Coalition Brownfield Project ---PAGE BREAK--- Sample ID IDEQ SOIL IDTL (mg/kg) RATL-1 (mg/kg) DES-SDU Date Collected 11/12/2012 Moisture (Method SM20 2540G) Moisture 13.5 Metals (EPA Method 6010B) Arsenic 0.391 0.488/15a 4.94 Barium 896 421 174 Cadmium 1.35 3.34 0.269 J Chromium 2,130 9,040 17.3 Lead 49.6 49.6b/400c 64.5 Mercury 0.00509 1.81 0.0506 J Selenium 2.03 30.1 1.35 J Silver 0.189 <0.135 Polynuclear Aromatic Hydrocarbons (EPA Method 8270C) Acenaphthene 52.3 157 0.068 J 78 157 0.089 J Anthracene 1,040 768 0.34 Benzo anthracene 0.422 0.696 1.10 Benzo pyrene 0.022 0.0696 1.20 Benzo fluoranthene 0.422 0.696 1.50 Benzo (g,h,i) perylene 1,180 78.5 0.930 Benzo fluoranthene 4.22 5.27 0.690 33.4 52.5 1.30 Dibenz (a,h) anthracene 0.422 0.0527 0.27 Fluoranthene 364 104 0.27 Fluorene 7.36 101 0.093 J Indeno (1,2,3-cd) pyrene 0.422 0.527 0.830 Naphthalene 1.14 7.57 0.061 J Phenanthrene 79 78.5 1.50 Pyrene 359 78.1 2.40 Notes: IDEQ - Idaho Department of Environmental Quality IDTLs - Initial Default Target Levels RATL-1 - Remedial Action Target Level -1 (Exposure pathway inlcudes residential receptors). IDTLs, RATL-1s and analyte concentrations reported in miligrams per kilogram (mg/kg) a - Background arsenic concentration for the Spokane, Washington area is 15 mg/kg. b - The risk evaluation software does not generate an RATL-1 for lead therefore the IDTL is reported. c - The EPA regional screening level (RSL) and Bunker Hill Superfund Site cleanup standard for lead in soil EPA - U.S. Environmental Protection Agency No No RATL-1 listed due to lack of detection is soil sample. < - Analyte not detected at or above the laboratory analytical method detection limit (MDL) Bold - Concentration is equal to or exceeds the MDL. - Concentration is equal to or exceeds the IDTL - Concentration is equal to or exceeds the RATL-1 and IDTL TABLE 1B ISM SURFACE SOIL ANALYTICAL RESULTS - SDU DUMAS ELEVATOR SPUR SITE Lily and Asbury Streets Greater Moscow Area Coalition Brownfield Project ---PAGE BREAK--- RATL-1 (mg/kg) DES-RDU RATL-1 (mg/kg) DES-RDU DES-RDU Date Collected 11/13/2012 11/13/2012 11/13/2012 Moisture (Method SM20 2540G) Moisture 15.8 20.9 20.6 Metals (EPA Method 6010B) Arsenic 0.391 0.260/15a 3.66 --/15a 3.92 2.14 Barium 896 351 117 137 127 Cadmium 1.35 2.78 0.323 J 0.193 J 0.0931 J Chromium 2,130 7,530 19.7 15.6 13.5 Lead 49.6 49.6b/400c 46.9 49.6b/400c 49.0 9.85 Mercury 0.00509 1.51 0.0709 J 0.165 0.0137 J Selenium 2.03 25.1 1.29 0.763 J <0.706 Silver 0.189 <0.136 <0.135 <0.137 Acenaphthene 52.3 <0.033 <0.003 <0.003 78 131 0.260 0.009 J <0.003 Anthracene 1,040 640 0.180 2,270 0.016 J 0.005 J Benzo anthracene 0.422 0.26 0.520 1,180 0.045 0.012 J Benzo pyrene 0.022 0.281 0.730 239 0.056 0.016 J Benzo fluoranthene 0.422 0.0281 1.00 150 0.076 0.022 Benzo (g,h,i) perylene 1,180 0.281 0.820 0.052 0.015 J Benzo fluoranthene 4.22 220 0.390 35,200 0.030 0.009 J 33.4 2.81 0.650 794 0.057 0.015 J Dibenz (a,h) anthracene 0.422 28 0.220 25,000 0.013 J 0.006 J Fluoranthene 364 292 0.460 3,210 0.099 0.026 Fluorene 7.36 <0.033 122 0.004 J <0.003 Indeno (1,2,3-cd) pyrene 0.422 0.281 0.690 6,280 0.043 0.011 J Naphthalene 1.14 6.31 0.035 J 0.0636 0.008 J 0.005 J Phenanthrene 79 65.4 0.160 J 0.046 0.010 J Pyrene 359 65.1 0.640 4,640 0.092 0.024 Notes: IDEQ - Idaho Department of Environmental Quality IDTLs - Initial Default Target Levels RATL-1 - Remedial Action Target Level -1 (Exposure pathway inlcudes residential receptors). IDTLs, RATL-1s and analyte concentrations reported in miligrams per kilogram (mg/kg) a - Background arsenic concentration for the Spokane, Washington area is 15 mg/kg. b - The risk evaluation software does not generate an RATL-1 for lead therefore the IDTL is reported. c - The EPA regional screening level (RSL) and Bunker Hill Superfund Site cleanup standard for lead in soil (400 mg/kg). EPA - U.S. Environmental Protection Agency No RATL-1 listed due to lack of detection is soil sample or generated for subsurface soil using IDEQ software. < - Analyte not detected at or above the laboratory analytical method detection limit (MDL) Bold - Concentration is equal to or exceeds the MDL. - Concentration is equal to or exceeds the IDTL - Concentration is equal to or exceeds the RATL-1 and IDTL Subsurface Soil Polynuclear Aromatic Hydrocarbons (EPA Method 8270C) TABLE 1C ISM SOIL ANALYTICAL RESULTS - RDU DUMAS ELEVATOR SPUR SITE Lily and Asbury Streets Greater Moscow Area Coalition Brownfield Project IDEQ SOIL IDTL (mg/kg) Sample ID Surface Soil ---PAGE BREAK--- Sample ID IDEQ SOIL IDTL (mg/kg) RATL-1 (mg/kg) DES-MW-1 (12-12.5') DES-MW-2 (11-12') DES-MW-3 (14-14.5') Date Collected 11/14/2012 11/14/2012 11/14/2012 Moisture (Method SM20 2540G) Moisture 23.7 14.8 13.6 Metals (EPA Method 6010B) Arsenic 0.391 --/15a 8.13 9.09 15.1 Barium 896 101 194 184 Cadmium 1.35 0.106 J 0.350 J 0.983 Chromium 2,130 18.2 15.3 15.3 Lead 49.6 49.6b/400c 6.45 45.1 20.7 Mercury 0.00509 <0.0096 0.0173 J 0.0102 J Selenium 2.03 1.19 1.55 J 1.65 J Silver 0.189 <0.137 <0.140 <0.137 Semivolatile Organic Compounds (EPA Method 8270C) Acenapthhene 52.3 <0.003 <0.003 <0.003 78 <0.003 <0.003 <0.003 Anthracene 1,040 <0.003 <0.003 <0.003 Benzo anthracene 0.422 <0.003 <0.003 <0.003 Benzo pyrene 0.022 <0.003 <0.003 <0.003 Benzo fluoranthene 0.422 <0.003 <0.003 <0.003 Benzo (g,h,i) perylene 1,180 <0.003 <0.003 <0.003 Benzo fluoranthene 4.22 <0.003 <0.003 <0.003 33.4 <0.003 <0.003 <0.003 Dibenz (a,h) anthracene 0.422 <0.003 <0.003 <0.003 Fluoranthene 364 <0.003 <0.003 <0.003 Fluorene 7.36 <0.003 <0.003 <0.003 Ideno (1,2,3-cd) pyrene 0.422 <0.003 <0.003 <0.003 Naphthalene 1.14 <0.003 <0.003 <0.003 Phenanthrene 79 <0.003 <0.003 <0.003 Pyrene 359 <0.003 <0.003 <0.003 Notes: IDEQ - Idaho Department of Environmental Quality IDTLs - Initial Default Target Levels RATL-1 - Remedial Action Target Level -1 IDTLs, RATL-1s and analyte concentrations reported in miligrams per kilogram (mg/kg) a - Background arsenic concentration for the Spokane, Washington area is 15 mg/kg. b - The risk evaluation software does not generate an RATL-1 for lead therefore the IDTL is reported. c - The EPA regional screening level (RSL) and Bunker Hill Superfund Site cleanup standard for lead in soil (400 mg/kg). EPA - U.S. Environmental Protection Agency No RATL-1 listed due to lack of detection is soil sample. < - Analyte not detected at or above the laboratory analytical method detection limit (MDL) Bold - Concentration is equal to or exceeds the MDL. - Concentration is equal to or exceeds the IDTL - Concentration is equal to or exceeds the RATL-1 and IDTL TABLE 2 SUBSURFACE SOIL ANALYTICAL RESULTS DUMAS ELEVATOR SPUR SITE Lilly and Asbury Streets Greater Moscow Area Coalition Brownfield Project ---PAGE BREAK--- Sample ID IDEQ GROUNDWATER IDTL (mg/L) RATL-1 (mg/L) DES-MW-1 DES-MW-2 DES-MW-3 Date Collected 11/15/2012 11/15/2012 11/15/2012 Metals (EPA Method 6010B) Arsenic 0.01 0.01 0.0130 J <0.0068 <0.0068 Barium 2.0 2.0 0.703 0.28 0.396 Cadmium 0.005 0.005 <0.00036 <0.00036 0.00046 J Chromium 0.1 0.1 0.0542 <0.0011 0.0071 J Lead 0.015 0.015 0.0451 J <0.0255 0.0256 J Mercury 0.002 0.002 <0.00007 <0.00007 0.00014 J Selenium 0.05 0.05 <0.0075 <0.0075 0.0075 Silver 0.0521 0.0521 <0.0012 <0.0012 0.0012 Semivolatile Organic Compounds (EPA Method 8270C) Acenapthhene 0.626 <0.0001 <0.0001 <0.00009 0.626 <0.0001 <0.0001 <0.00009 Anthracene 3.13 <0.0001 <0.0001 <0.00009 Benzo anthracene 0.0000765 <0.0001 <0.0001 <0.00009 Benzo pyrene 0.0002 <0.0001 <0.0001 <0.00009 Benzo fluoranthene 0.0000765 <0.0001 <0.0001 <0.00009 Benzo (g,h,i) perylene 0.313 <0.0001 <0.0001 <0.00009 Benzo fluoranthene 0.000765 <0.0001 <0.0001 <0.00009 0.00765 <0.0001 <0.0001 <0.00009 Dibenz (a,h) anthracene 0.00000765 <0.0001 <0.0001 <0.00009 Fluoranthene 0.417 <0.0001 <0.0001 <0.00009 Fluorene 0.417 <0.0001 <0.0001 <0.00009 Ideno (1,2,3-cd) pyrene 0.0000765 <0.0001 <0.0001 <0.00009 Naphthalene 0.209 <0.0001 <0.0001 <0.00009 Phenanthrene 0.313 <0.0001 <0.0001 <0.00009 Pyrene 0.313 <0.0001 <0.0001 <0.00009 Notes: IDEQ - Idaho Department of Environmental Quality IDTLs - Initial Default Target Levels RATL-1 - Remedial Action Target Level -1 IDTLs, RATL-1s and analyte concentrations reported in miligrams per liter (mg/L) EPA - U.S. Environmental Protection Agency No RATL-1 listed due to lack of detection is groundwater sample. < - Analyte not detected at or above the laboratory analytical method detection limit (MDL) Bold - Concentration is equal to or exceeds the MDL. - Concentration is equal to or exceeds the IDTL - Concentration is equal to or exceeds the RATL-1 and IDTL TABLE 3 GROUNDWATER ANALYTICAL RESULTS DUMAS ELEVATOR SPUR SITE Lilly and Asbury Streets Greater Moscow Area Coalition Brownfield Project ---PAGE BREAK--- APPENDIX C LABORATORY ANALYTICAL REPORTS ---PAGE BREAK--- ANALYTICAL RESULTS Prepared by: Lancaster Laboratories 2425 New Holland Pike Lancaster, PA 17605-2425 Prepared for: Tetra Tech Suite 2 2525 Palmer Street Missoula MT 59808 November 27, 2012 Project: Dumas Spur Submittal Date: 11/17/2012 Group Number: 1350212 PO Number: 114-570493.100 State of Sample Origin: MT Client Sample Description Lancaster Labs (LLI) # DES-NDU(0-1') Composite Soil 6865638 DES-SDU(0-1') Composite Soil 6865639 Duplicate Composite Soil 6865640 Triplicate Composite Soil 6865641 DES-RDU(0-1') Composite Soil 6865642 DES-RDU(1-2') Composite Soil 6865643 DES-RDU(2-3') Composite Soil 6865644 Rinsate Blank Grab Water 6865645 DES-MW-1(12-12.5') Composite Soil 6865646 DES-MW-2(11-12') Composite Soil 6865647 DES-MW-3(14-14.5') Composite Soil 6865648 Field Blank Grab Water 6865649 DES-MW-3 Grab Groundwater 6865650 DES-MW-2 Grab Groundwater 6865651 DES-MW-1 Grab Groundwater 6865652 Duplicate Grab Groundwater 6865653 The specific methodologies used in obtaining the enclosed analytical results are indicated on the Laboratory Sample Analysis Record. ELECTRONIC COPY TO Tetra Tech Attn: Natalie Morrow Page 1 of 44 ---PAGE BREAK--- Respectfully Submitted, (717) 556-7264 Page 2 of 44 ---PAGE BREAK--- LLI Sample # SW 6865638 LLI Group # 1350212 Account # 11441 Sample Description: DES-NDU(0-1') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/12/2012 15:30 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DSNDU As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/kg ug/kg ug/kg GC/MS Semivolatiles SW-846 8270C 16 J 1 83-32-9 10724 3 17 Acenaphthene 49 1 208-96-8 10724 3 17 61 1 120-12-7 10724 3 17 Anthracene 250 1 56-55-3 10724 3 17 Benzo(a)anthracene 280 1 50-32-8 10724 3 17 Benzo(a)pyrene 350 1 205-99-2 10724 3 17 Benzo(b)fluoranthene 220 1 191-24-2 10724 3 17 Benzo(g,h,i)perylene 130 1 207-08-9 10724 3 17 Benzo(k)fluoranthene 240 1 218-01-9 10724 3 17 49 1 53-70-3 10724 3 17 Dibenz(a,h)anthracene 500 1 206-44-0 10724 3 17 Fluoranthene 16 J 1 86-73-7 10724 3 17 Fluorene 180 1 193-39-5 10724 3 17 Indeno(1,2,3-cd)pyrene 33 1 91-20-3 10724 3 17 Naphthalene 220 1 85-01-8 10724 3 17 Phenanthrene 460 1 129-00-0 10724 3 17 Pyrene The LCS and/or LCSD recoveries are outside the stated QC window but within the marginal exceedance allowance of 4 standard deviations as defined in the NELAC Standards. The following analytes are accepted based on this allowance: fluoranthene mg/kg mg/kg mg/kg Metals SW-846 6010B 3.79 1 7440-38-2 06935 0.324 1.96 Arsenic 243 1 7440-39-3 06946 0.0324 0.490 Barium 0.453 J 1 7440-43-9 06949 0.0324 0.490 Cadmium 17.4 1 7440-47-3 06951 0.0863 1.47 Chromium 124 1 7439-92-1 06955 0.461 1.47 Lead N.D. 1 7782-49-2 06936 0.706 1.96 Selenium 0.142 J 1 7440-22-4 06966 0.137 0.490 Silver mg/kg mg/kg mg/kg SW-846 7471A 0.132 1 7439-97-6 00159 0.0096 0.0925 Mercury % % % Wet Chemistry SM20 2540 G 20.6 1 n.a. 00111 0.50 0.50 Moisture "Moisture" represents the loss in weight of the sample after oven drying at 103 - 105 degrees Celsius. The moisture result reported above is on an as-received basis. General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record *=This limit was used in the evaluation of the final result Page 3 of 44 ---PAGE BREAK--- LLI Sample # SW 6865638 LLI Group # 1350212 Account # 11441 Sample Description: DES-NDU(0-1') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/12/2012 15:30 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DSNDU Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Holly Berry 11/23/2012 20:02 12325SLC026 1 SW-846 8270C PAHs 10724 1 JoElla L Rice 11/20/2012 15:40 12325SLC026 1 SW-846 3546 BNA Soil Microwave PAH 10814 1 Eric L Eby 11/23/2012 11:59 123255708002 1 SW-846 6010B Arsenic 06935 1 Eric L Eby 11/23/2012 11:59 123255708002 1 SW-846 6010B Barium 06946 1 Eric L Eby 11/23/2012 11:59 123255708002 1 SW-846 6010B Cadmium 06949 1 Eric L Eby 11/23/2012 11:59 123255708002 1 SW-846 6010B Chromium 06951 1 Eric L Eby 11/23/2012 11:59 123255708002 1 SW-846 6010B Lead 06955 1 Eric L Eby 11/23/2012 11:59 123255708002 1 SW-846 6010B Selenium 06936 1 Eric L Eby 11/23/2012 11:59 123255708002 1 SW-846 6010B Silver 06966 1 Damary Valentin 11/25/2012 10:14 123255711002 1 SW-846 7471A Mercury 00159 1 Denise K Conners 11/21/2012 08:55 123255708002 1 SW-846 3050B SW SW846 ICP/ICP MS Digest 05708 1 Denise K Conners 11/21/2012 11:00 123255711002 1 SW-846 7471A modified SW SW846 Hg Digest 05711 1 Lisa J Cooke 11/26/2012 15:28 12331820002B 1 SM20 2540 G Moisture 00111 *=This limit was used in the evaluation of the final result Page 4 of 44 ---PAGE BREAK--- LLI Sample # SW 6865639 LLI Group # 1350212 Account # 11441 Sample Description: DES-SDU(0-1') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/12/2012 14:30 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DSSDU As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/kg ug/kg ug/kg GC/MS Semivolatiles SW-846 8270C 68 J 10 83-32-9 10724 33 170 Acenaphthene 89 J 10 208-96-8 10724 33 170 340 10 120-12-7 10724 33 170 Anthracene 1,100 10 56-55-3 10724 33 170 Benzo(a)anthracene 1,200 10 50-32-8 10724 33 170 Benzo(a)pyrene 1,500 10 205-99-2 10724 33 170 Benzo(b)fluoranthene 930 10 191-24-2 10724 33 170 Benzo(g,h,i)perylene 690 10 207-08-9 10724 33 170 Benzo(k)fluoranthene 1,300 10 218-01-9 10724 33 170 270 10 53-70-3 10724 33 170 Dibenz(a,h)anthracene 2,700 10 206-44-0 10724 33 170 Fluoranthene 93 J 10 86-73-7 10724 33 170 Fluorene 830 10 193-39-5 10724 33 170 Indeno(1,2,3-cd)pyrene 61 J 10 91-20-3 10724 33 170 Naphthalene 1,500 10 85-01-8 10724 33 170 Phenanthrene 2,400 10 129-00-0 10724 33 170 Pyrene The LCS and/or LCSD recoveries are outside the stated QC window but within the marginal exceedance allowance of 4 standard deviations as defined in the NELAC Standards. The following analytes are accepted based on this allowance: fluoranthene mg/kg mg/kg mg/kg Metals SW-846 6010B 4.94 1 7440-38-2 06935 0.317 1.92 Arsenic 174 1 7440-39-3 06946 0.0317 0.481 Barium 0.269 J 1 7440-43-9 06949 0.0317 0.481 Cadmium 17.3 1 7440-47-3 06951 0.0846 1.44 Chromium 64.5 1 7439-92-1 06955 0.452 1.44 Lead 1.35 J 1 7782-49-2 06936 0.692 1.92 Selenium N.D. 1 7440-22-4 06966 0.135 0.481 Silver mg/kg mg/kg mg/kg SW-846 7471A 0.0506 J 1 7439-97-6 00159 0.0103 0.0998 Mercury % % % Wet Chemistry SM20 2540 G 13.5 1 n.a. 00111 0.50 0.50 Moisture "Moisture" represents the loss in weight of the sample after oven drying at 103 - 105 degrees Celsius. The moisture result reported above is on an as-received basis. General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record *=This limit was used in the evaluation of the final result Page 5 of 44 ---PAGE BREAK--- LLI Sample # SW 6865639 LLI Group # 1350212 Account # 11441 Sample Description: DES-SDU(0-1') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/12/2012 14:30 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DSSDU Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 10 Holly Berry 11/23/2012 20:25 12325SLC026 1 SW-846 8270C PAHs 10724 1 JoElla L Rice 11/20/2012 15:40 12325SLC026 1 SW-846 3546 BNA Soil Microwave PAH 10814 1 Eric L Eby 11/23/2012 12:03 123255708002 1 SW-846 6010B Arsenic 06935 1 Eric L Eby 11/23/2012 12:03 123255708002 1 SW-846 6010B Barium 06946 1 Eric L Eby 11/23/2012 12:03 123255708002 1 SW-846 6010B Cadmium 06949 1 Eric L Eby 11/23/2012 12:03 123255708002 1 SW-846 6010B Chromium 06951 1 Eric L Eby 11/23/2012 12:03 123255708002 1 SW-846 6010B Lead 06955 1 Eric L Eby 11/23/2012 12:03 123255708002 1 SW-846 6010B Selenium 06936 1 Eric L Eby 11/23/2012 12:03 123255708002 1 SW-846 6010B Silver 06966 1 Damary Valentin 11/25/2012 10:16 123255711002 1 SW-846 7471A Mercury 00159 1 Denise K Conners 11/21/2012 08:55 123255708002 1 SW-846 3050B SW SW846 ICP/ICP MS Digest 05708 1 Denise K Conners 11/21/2012 11:00 123255711002 1 SW-846 7471A modified SW SW846 Hg Digest 05711 1 Lisa J Cooke 11/26/2012 15:28 12331820002B 1 SM20 2540 G Moisture 00111 *=This limit was used in the evaluation of the final result Page 6 of 44 ---PAGE BREAK--- LLI Sample # SW 6865640 LLI Group # 1350212 Account # 11441 Sample Description: Duplicate Composite Soil Dumas Spur Project Name: Dumas Spur Collected: n.a. Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DP1-- As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/kg ug/kg ug/kg GC/MS Semivolatiles SW-846 8270C 4 J 1 83-32-9 10724 3 17 Acenaphthene 19 1 208-96-8 10724 3 17 29 1 120-12-7 10724 3 17 Anthracene 110 1 56-55-3 10724 3 17 Benzo(a)anthracene 130 1 50-32-8 10724 3 17 Benzo(a)pyrene 180 1 205-99-2 10724 3 17 Benzo(b)fluoranthene 110 1 191-24-2 10724 3 17 Benzo(g,h,i)perylene 66 1 207-08-9 10724 3 17 Benzo(k)fluoranthene 120 1 218-01-9 10724 3 17 35 1 53-70-3 10724 3 17 Dibenz(a,h)anthracene 190 1 206-44-0 10724 3 17 Fluoranthene 5 J 1 86-73-7 10724 3 17 Fluorene 94 1 193-39-5 10724 3 17 Indeno(1,2,3-cd)pyrene 19 1 91-20-3 10724 3 17 Naphthalene 81 1 85-01-8 10724 3 17 Phenanthrene 180 1 129-00-0 10724 3 17 Pyrene The LCS and/or LCSD recoveries are outside the stated QC window but within the marginal exceedance allowance of 4 standard deviations as defined in the NELAC Standards. The following analytes are accepted based on this allowance: fluoranthene mg/kg mg/kg mg/kg Metals SW-846 6010B 3.89 1 7440-38-2 06935 0.330 2.00 Arsenic 275 1 7440-39-3 06946 0.0330 0.500 Barium 0.467 J 1 7440-43-9 06949 0.0330 0.500 Cadmium 20.1 1 7440-47-3 06951 0.0880 1.50 Chromium 197 1 7439-92-1 06955 0.470 1.50 Lead 0.768 J 1 7782-49-2 06936 0.720 2.00 Selenium 0.183 J 1 7440-22-4 06966 0.140 0.500 Silver mg/kg mg/kg mg/kg SW-846 7471A 0.163 1 7439-97-6 00159 0.0097 0.0941 Mercury % % % Wet Chemistry SM20 2540 G 19.0 1 n.a. 00111 0.50 0.50 Moisture "Moisture" represents the loss in weight of the sample after oven drying at 103 - 105 degrees Celsius. The moisture result reported above is on an as-received basis. General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record *=This limit was used in the evaluation of the final result Page 7 of 44 ---PAGE BREAK--- LLI Sample # SW 6865640 LLI Group # 1350212 Account # 11441 Sample Description: Duplicate Composite Soil Dumas Spur Project Name: Dumas Spur Collected: n.a. Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DP1-- Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Holly Berry 11/23/2012 20:47 12325SLC026 1 SW-846 8270C PAHs 10724 1 JoElla L Rice 11/20/2012 15:40 12325SLC026 1 SW-846 3546 BNA Soil Microwave PAH 10814 1 Eric L Eby 11/23/2012 11:51 123255708002 1 SW-846 6010B Arsenic 06935 1 Eric L Eby 11/23/2012 11:51 123255708002 1 SW-846 6010B Barium 06946 1 Eric L Eby 11/23/2012 11:51 123255708002 1 SW-846 6010B Cadmium 06949 1 Eric L Eby 11/23/2012 11:51 123255708002 1 SW-846 6010B Chromium 06951 1 Eric L Eby 11/23/2012 11:51 123255708002 1 SW-846 6010B Lead 06955 1 Eric L Eby 11/23/2012 11:51 123255708002 1 SW-846 6010B Selenium 06936 1 Eric L Eby 11/23/2012 11:51 123255708002 1 SW-846 6010B Silver 06966 1 Damary Valentin 11/25/2012 10:10 123255711002 1 SW-846 7471A Mercury 00159 1 Denise K Conners 11/21/2012 08:55 123255708002 1 SW-846 3050B SW SW846 ICP/ICP MS Digest 05708 1 Denise K Conners 11/21/2012 11:00 123255711002 1 SW-846 7471A modified SW SW846 Hg Digest 05711 1 Lisa J Cooke 11/26/2012 15:28 12331820002B 1 SM20 2540 G Moisture 00111 *=This limit was used in the evaluation of the final result Page 8 of 44 ---PAGE BREAK--- LLI Sample # SW 6865641 LLI Group # 1350212 Account # 11441 Sample Description: Triplicate Composite Soil Dumas Spur Project Name: Dumas Spur Collected: n.a. Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 TP1-- As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/kg ug/kg ug/kg GC/MS Semivolatiles SW-846 8270C 14 J 1 83-32-9 10724 3 17 Acenaphthene 19 1 208-96-8 10724 3 17 60 1 120-12-7 10724 3 17 Anthracene 160 1 56-55-3 10724 3 17 Benzo(a)anthracene 150 1 50-32-8 10724 3 17 Benzo(a)pyrene 220 1 205-99-2 10724 3 17 Benzo(b)fluoranthene 130 1 191-24-2 10724 3 17 Benzo(g,h,i)perylene 80 1 207-08-9 10724 3 17 Benzo(k)fluoranthene 160 1 218-01-9 10724 3 17 30 1 53-70-3 10724 3 17 Dibenz(a,h)anthracene 320 1 206-44-0 10724 3 17 Fluoranthene 27 1 86-73-7 10724 3 17 Fluorene 110 1 193-39-5 10724 3 17 Indeno(1,2,3-cd)pyrene 20 1 91-20-3 10724 3 17 Naphthalene 220 1 85-01-8 10724 3 17 Phenanthrene 260 1 129-00-0 10724 3 17 Pyrene The LCS and/or LCSD recoveries are outside the stated QC window but within the marginal exceedance allowance of 4 standard deviations as defined in the NELAC Standards. The following analytes are accepted based on this allowance: fluoranthene mg/kg mg/kg mg/kg Metals SW-846 6010B 3.53 1 7440-38-2 06935 0.330 2.00 Arsenic 272 1 7440-39-3 06946 0.0330 0.500 Barium 0.391 J 1 7440-43-9 06949 0.0330 0.500 Cadmium 19.7 1 7440-47-3 06951 0.0880 1.50 Chromium 121 1 7439-92-1 06955 0.470 1.50 Lead N.D. 1 7782-49-2 06936 0.720 2.00 Selenium N.D. 1 7440-22-4 06966 0.140 0.500 Silver mg/kg mg/kg mg/kg SW-846 7471A 0.0948 1 7439-97-6 00159 0.0097 0.0943 Mercury % % % Wet Chemistry SM20 2540 G 17.9 1 n.a. 00111 0.50 0.50 Moisture "Moisture" represents the loss in weight of the sample after oven drying at 103 - 105 degrees Celsius. The moisture result reported above is on an as-received basis. General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record *=This limit was used in the evaluation of the final result Page 9 of 44 ---PAGE BREAK--- LLI Sample # SW 6865641 LLI Group # 1350212 Account # 11441 Sample Description: Triplicate Composite Soil Dumas Spur Project Name: Dumas Spur Collected: n.a. Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 TP1-- Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Holly Berry 11/23/2012 21:10 12325SLC026 1 SW-846 8270C PAHs 10724 1 JoElla L Rice 11/20/2012 15:40 12325SLC026 1 SW-846 3546 BNA Soil Microwave PAH 10814 1 Eric L Eby 11/23/2012 11:55 123255708002 1 SW-846 6010B Arsenic 06935 1 Eric L Eby 11/23/2012 11:55 123255708002 1 SW-846 6010B Barium 06946 1 Eric L Eby 11/23/2012 11:55 123255708002 1 SW-846 6010B Cadmium 06949 1 Eric L Eby 11/23/2012 11:55 123255708002 1 SW-846 6010B Chromium 06951 1 Eric L Eby 11/23/2012 11:55 123255708002 1 SW-846 6010B Lead 06955 1 Eric L Eby 11/23/2012 11:55 123255708002 1 SW-846 6010B Selenium 06936 1 Eric L Eby 11/23/2012 11:55 123255708002 1 SW-846 6010B Silver 06966 1 Damary Valentin 11/25/2012 10:12 123255711002 1 SW-846 7471A Mercury 00159 1 Denise K Conners 11/21/2012 08:55 123255708002 1 SW-846 3050B SW SW846 ICP/ICP MS Digest 05708 1 Denise K Conners 11/21/2012 11:00 123255711002 1 SW-846 7471A modified SW SW846 Hg Digest 05711 1 Lisa J Cooke 11/26/2012 15:28 12331820002B 1 SM20 2540 G Moisture 00111 *=This limit was used in the evaluation of the final result Page 10 of 44 ---PAGE BREAK--- LLI Sample # SW 6865642 LLI Group # 1350212 Account # 11441 Sample Description: DES-RDU(0-1') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/13/2012 13:00 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DSRD0 As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/kg ug/kg ug/kg GC/MS Semivolatiles SW-846 8270C N.D. 10 83-32-9 10724 33 170 Acenaphthene 260 10 208-96-8 10724 33 170 180 10 120-12-7 10724 33 170 Anthracene 520 10 56-55-3 10724 33 170 Benzo(a)anthracene 730 10 50-32-8 10724 33 170 Benzo(a)pyrene 1,000 10 205-99-2 10724 33 170 Benzo(b)fluoranthene 820 10 191-24-2 10724 33 170 Benzo(g,h,i)perylene 390 10 207-08-9 10724 33 170 Benzo(k)fluoranthene 650 10 218-01-9 10724 33 170 220 10 53-70-3 10724 33 170 Dibenz(a,h)anthracene 460 10 206-44-0 10724 33 170 Fluoranthene N.D. 10 86-73-7 10724 33 170 Fluorene 690 10 193-39-5 10724 33 170 Indeno(1,2,3-cd)pyrene 35 J 10 91-20-3 10724 33 170 Naphthalene 160 J 10 85-01-8 10724 33 170 Phenanthrene 640 10 129-00-0 10724 33 170 Pyrene The LCS and/or LCSD recoveries are outside the stated QC window but within the marginal exceedance allowance of 4 standard deviations as defined in the NELAC Standards. The following analytes are accepted based on this allowance: fluoranthene mg/kg mg/kg mg/kg Metals SW-846 6010B 3.66 1 7440-38-2 06935 0.320 1.94 Arsenic 117 1 7440-39-3 06946 0.0320 0.485 Barium 0.323 J 1 7440-43-9 06949 0.0320 0.485 Cadmium 19.7 1 7440-47-3 06951 0.0854 1.46 Chromium 46.9 1 7439-92-1 06955 0.456 1.46 Lead 1.29 J 1 7782-49-2 06936 0.699 1.94 Selenium N.D. 1 7440-22-4 06966 0.136 0.485 Silver mg/kg mg/kg mg/kg SW-846 7471A 0.0709 J 1 7439-97-6 00159 0.0099 0.0961 Mercury % % % Wet Chemistry SM20 2540 G 15.8 1 n.a. 00111 0.50 0.50 Moisture "Moisture" represents the loss in weight of the sample after oven drying at 103 - 105 degrees Celsius. The moisture result reported above is on an as-received basis. General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record *=This limit was used in the evaluation of the final result Page 11 of 44 ---PAGE BREAK--- LLI Sample # SW 6865642 LLI Group # 1350212 Account # 11441 Sample Description: DES-RDU(0-1') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/13/2012 13:00 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DSRD0 Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 10 Holly Berry 11/23/2012 21:32 12325SLC026 1 SW-846 8270C PAHs 10724 1 JoElla L Rice 11/20/2012 15:40 12325SLC026 1 SW-846 3546 BNA Soil Microwave PAH 10814 1 Eric L Eby 11/23/2012 12:08 123255708002 1 SW-846 6010B Arsenic 06935 1 Eric L Eby 11/23/2012 12:08 123255708002 1 SW-846 6010B Barium 06946 1 Eric L Eby 11/23/2012 12:08 123255708002 1 SW-846 6010B Cadmium 06949 1 Eric L Eby 11/23/2012 12:08 123255708002 1 SW-846 6010B Chromium 06951 1 Eric L Eby 11/23/2012 12:08 123255708002 1 SW-846 6010B Lead 06955 1 Eric L Eby 11/23/2012 12:08 123255708002 1 SW-846 6010B Selenium 06936 1 Eric L Eby 11/23/2012 12:08 123255708002 1 SW-846 6010B Silver 06966 1 Damary Valentin 11/25/2012 10:22 123255711002 1 SW-846 7471A Mercury 00159 1 Denise K Conners 11/21/2012 08:55 123255708002 1 SW-846 3050B SW SW846 ICP/ICP MS Digest 05708 1 Denise K Conners 11/21/2012 11:00 123255711002 1 SW-846 7471A modified SW SW846 Hg Digest 05711 1 Lisa J Cooke 11/26/2012 15:28 12331820002B 1 SM20 2540 G Moisture 00111 *=This limit was used in the evaluation of the final result Page 12 of 44 ---PAGE BREAK--- LLI Sample # SW 6865643 LLI Group # 1350212 Account # 11441 Sample Description: DES-RDU(1-2') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/13/2012 13:00 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DSRD1 As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/kg ug/kg ug/kg GC/MS Semivolatiles SW-846 8270C N.D. 1 83-32-9 10724 3 17 Acenaphthene 9 J 1 208-96-8 10724 3 17 16 J 1 120-12-7 10724 3 17 Anthracene 45 1 56-55-3 10724 3 17 Benzo(a)anthracene 56 1 50-32-8 10724 3 17 Benzo(a)pyrene 76 1 205-99-2 10724 3 17 Benzo(b)fluoranthene 52 1 191-24-2 10724 3 17 Benzo(g,h,i)perylene 30 1 207-08-9 10724 3 17 Benzo(k)fluoranthene 57 1 218-01-9 10724 3 17 13 J 1 53-70-3 10724 3 17 Dibenz(a,h)anthracene 99 1 206-44-0 10724 3 17 Fluoranthene 4 J 1 86-73-7 10724 3 17 Fluorene 43 1 193-39-5 10724 3 17 Indeno(1,2,3-cd)pyrene 8 J 1 91-20-3 10724 3 17 Naphthalene 46 1 85-01-8 10724 3 17 Phenanthrene 92 1 129-00-0 10724 3 17 Pyrene The LCS and/or LCSD recoveries are outside the stated QC window but within the marginal exceedance allowance of 4 standard deviations as defined in the NELAC Standards. The following analytes are accepted based on this allowance: fluoranthene mg/kg mg/kg mg/kg Metals SW-846 6010B 3.92 1 7440-38-2 06935 0.317 1.92 Arsenic 137 1 7440-39-3 06946 0.0317 0.481 Barium 0.193 J 1 7440-43-9 06949 0.0317 0.481 Cadmium 15.6 1 7440-47-3 06951 0.0846 1.44 Chromium 49.0 1 7439-92-1 06955 0.452 1.44 Lead 0.763 J 1 7782-49-2 06936 0.692 1.92 Selenium N.D. 1 7440-22-4 06966 0.135 0.481 Silver mg/kg mg/kg mg/kg SW-846 7471A 0.165 1 7439-97-6 00159 0.0102 0.0991 Mercury % % % Wet Chemistry SM20 2540 G 20.9 1 n.a. 00111 0.50 0.50 Moisture "Moisture" represents the loss in weight of the sample after oven drying at 103 - 105 degrees Celsius. The moisture result reported above is on an as-received basis. General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record *=This limit was used in the evaluation of the final result Page 13 of 44 ---PAGE BREAK--- LLI Sample # SW 6865643 LLI Group # 1350212 Account # 11441 Sample Description: DES-RDU(1-2') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/13/2012 13:00 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DSRD1 Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Holly Berry 11/23/2012 21:55 12325SLC026 1 SW-846 8270C PAHs 10724 1 JoElla L Rice 11/20/2012 15:40 12325SLC026 1 SW-846 3546 BNA Soil Microwave PAH 10814 1 Eric L Eby 11/23/2012 12:12 123255708002 1 SW-846 6010B Arsenic 06935 1 Eric L Eby 11/23/2012 12:12 123255708002 1 SW-846 6010B Barium 06946 1 Eric L Eby 11/23/2012 12:12 123255708002 1 SW-846 6010B Cadmium 06949 1 Eric L Eby 11/23/2012 12:12 123255708002 1 SW-846 6010B Chromium 06951 1 Eric L Eby 11/23/2012 12:12 123255708002 1 SW-846 6010B Lead 06955 1 Eric L Eby 11/23/2012 12:12 123255708002 1 SW-846 6010B Selenium 06936 1 Eric L Eby 11/23/2012 12:12 123255708002 1 SW-846 6010B Silver 06966 1 Damary Valentin 11/25/2012 10:25 123255711002 1 SW-846 7471A Mercury 00159 1 Denise K Conners 11/21/2012 08:55 123255708002 1 SW-846 3050B SW SW846 ICP/ICP MS Digest 05708 1 Denise K Conners 11/21/2012 11:00 123255711002 1 SW-846 7471A modified SW SW846 Hg Digest 05711 1 Lisa J Cooke 11/26/2012 15:28 12331820002B 1 SM20 2540 G Moisture 00111 *=This limit was used in the evaluation of the final result Page 14 of 44 ---PAGE BREAK--- LLI Sample # SW 6865644 LLI Group # 1350212 Account # 11441 Sample Description: DES-RDU(2-3') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/13/2012 13:00 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DSRD2 As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/kg ug/kg ug/kg GC/MS Semivolatiles SW-846 8270C N.D. 1 83-32-9 10724 3 17 Acenaphthene N.D. 1 208-96-8 10724 3 17 5 J 1 120-12-7 10724 3 17 Anthracene 12 J 1 56-55-3 10724 3 17 Benzo(a)anthracene 16 J 1 50-32-8 10724 3 17 Benzo(a)pyrene 22 1 205-99-2 10724 3 17 Benzo(b)fluoranthene 15 J 1 191-24-2 10724 3 17 Benzo(g,h,i)perylene 9 J 1 207-08-9 10724 3 17 Benzo(k)fluoranthene 15 J 1 218-01-9 10724 3 17 6 J 1 53-70-3 10724 3 17 Dibenz(a,h)anthracene 26 1 206-44-0 10724 3 17 Fluoranthene N.D. 1 86-73-7 10724 3 17 Fluorene 11 J 1 193-39-5 10724 3 17 Indeno(1,2,3-cd)pyrene 5 J 1 91-20-3 10724 3 17 Naphthalene 10 J 1 85-01-8 10724 3 17 Phenanthrene 24 1 129-00-0 10724 3 17 Pyrene The LCS and/or LCSD recoveries are outside the stated QC window but within the marginal exceedance allowance of 4 standard deviations as defined in the NELAC Standards. The following analytes are accepted based on this allowance: fluoranthene mg/kg mg/kg mg/kg Metals SW-846 6010B 2.14 1 7440-38-2 06935 0.324 1.96 Arsenic 127 1 7440-39-3 06946 0.0324 0.490 Barium 0.0931 J 1 7440-43-9 06949 0.0324 0.490 Cadmium 13.5 1 7440-47-3 06951 0.0863 1.47 Chromium 9.85 1 7439-92-1 06955 0.461 1.47 Lead N.D. 1 7782-49-2 06936 0.706 1.96 Selenium N.D. 1 7440-22-4 06966 0.137 0.490 Silver mg/kg mg/kg mg/kg SW-846 7471A 0.0137 J 1 7439-97-6 00159 0.0102 0.0984 Mercury % % % Wet Chemistry SM20 2540 G 20.6 1 n.a. 00111 0.50 0.50 Moisture "Moisture" represents the loss in weight of the sample after oven drying at 103 - 105 degrees Celsius. The moisture result reported above is on an as-received basis. General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record *=This limit was used in the evaluation of the final result Page 15 of 44 ---PAGE BREAK--- LLI Sample # SW 6865644 LLI Group # 1350212 Account # 11441 Sample Description: DES-RDU(2-3') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/13/2012 13:00 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DSRD2 Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Holly Berry 11/23/2012 22:18 12325SLC026 1 SW-846 8270C PAHs 10724 1 JoElla L Rice 11/20/2012 15:40 12325SLC026 1 SW-846 3546 BNA Soil Microwave PAH 10814 1 Eric L Eby 11/23/2012 12:16 123255708002 1 SW-846 6010B Arsenic 06935 1 Eric L Eby 11/23/2012 12:16 123255708002 1 SW-846 6010B Barium 06946 1 Eric L Eby 11/23/2012 12:16 123255708002 1 SW-846 6010B Cadmium 06949 1 Eric L Eby 11/23/2012 12:16 123255708002 1 SW-846 6010B Chromium 06951 1 Eric L Eby 11/23/2012 12:16 123255708002 1 SW-846 6010B Lead 06955 1 Eric L Eby 11/23/2012 12:16 123255708002 1 SW-846 6010B Selenium 06936 1 Eric L Eby 11/23/2012 12:16 123255708002 1 SW-846 6010B Silver 06966 1 Damary Valentin 11/25/2012 10:27 123255711002 1 SW-846 7471A Mercury 00159 1 Denise K Conners 11/21/2012 08:55 123255708002 1 SW-846 3050B SW SW846 ICP/ICP MS Digest 05708 1 Denise K Conners 11/21/2012 11:00 123255711002 1 SW-846 7471A modified SW SW846 Hg Digest 05711 1 Lisa J Cooke 11/26/2012 15:28 12331820002B 1 SM20 2540 G Moisture 00111 *=This limit was used in the evaluation of the final result Page 16 of 44 ---PAGE BREAK--- LLI Sample # WW 6865645 LLI Group # 1350212 Account # 11441 Sample Description: Rinsate Blank Grab Water Dumas Spur Project Name: Dumas Spur Collected: 11/14/2012 10:10 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/l ug/l ug/l GC/MS Semivolatiles SW-846 8270C N.D. 1 83-32-9 07805 0.1 0.5 Acenaphthene N.D. 1 208-96-8 07805 0.1 0.5 N.D. 1 120-12-7 07805 0.1 0.5 Anthracene N.D. 1 56-55-3 07805 0.1 0.5 Benzo(a)anthracene N.D. 1 50-32-8 07805 0.1 0.5 Benzo(a)pyrene N.D. 1 205-99-2 07805 0.1 0.5 Benzo(b)fluoranthene N.D. 1 191-24-2 07805 0.1 0.5 Benzo(g,h,i)perylene N.D. 1 207-08-9 07805 0.1 0.5 Benzo(k)fluoranthene N.D. 1 218-01-9 07805 0.1 0.5 N.D. 1 53-70-3 07805 0.1 0.5 Dibenz(a,h)anthracene N.D. 1 206-44-0 07805 0.1 0.5 Fluoranthene N.D. 1 86-73-7 07805 0.1 0.5 Fluorene N.D. 1 193-39-5 07805 0.1 0.5 Indeno(1,2,3-cd)pyrene 0.4 J 1 91-20-3 07805 0.1 0.5 Naphthalene 0.1 J 1 85-01-8 07805 0.1 0.5 Phenanthrene N.D. 1 129-00-0 07805 0.1 0.5 Pyrene mg/l mg/l mg/l Metals SW-846 6010B N.D. 1 7440-38-2 07035 0.0068 0.0200 Arsenic 0.00048 J 1 7440-39-3 07046 0.00033 0.0050 Barium N.D. 1 7440-43-9 07049 0.00036 0.0050 Cadmium N.D. 1 7440-47-3 07051 0.0011 0.0150 Chromium N.D. 1 7439-92-1 07055 0.0051 0.0150 Lead N.D. 1 7782-49-2 07036 0.0075 0.0200 Selenium N.D. 1 7440-22-4 07066 0.0012 0.0050 Silver mg/l mg/l mg/l SW-846 7470A N.D. 1 7439-97-6 00259 0.000070 0.00020 Mercury General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Brian K Graham 11/22/2012 12:07 12325WAA026 1 SW-846 8270C PAHs in Water by GC/MS 07805 1 Seth A Farrier 11/20/2012 16:30 12325WAA026 1 SW-846 3510C BNA Water Extraction 07807 1 Eric L Eby 11/24/2012 11:18 123261848003 1 SW-846 6010B Arsenic 07035 1 Eric L Eby 11/24/2012 11:18 123261848003 1 SW-846 6010B Barium 07046 1 Eric L Eby 11/24/2012 11:18 123261848003 1 SW-846 6010B Cadmium 07049 1 Eric L Eby 11/24/2012 11:18 123261848003 1 SW-846 6010B Chromium 07051 1 John P Hook 11/25/2012 17:48 123261848003 1 SW-846 6010B Lead 07055 1 Eric L Eby 11/24/2012 11:18 123261848003 1 SW-846 6010B Selenium 07036 1 Eric L Eby 11/24/2012 11:18 123261848003 1 SW-846 6010B Silver 07066 1 Damary Valentin 11/21/2012 07:39 123245713003 1 SW-846 7470A Mercury 00259 *=This limit was used in the evaluation of the final result Page 17 of 44 ---PAGE BREAK--- LLI Sample # WW 6865645 LLI Group # 1350212 Account # 11441 Sample Description: Rinsate Blank Grab Water Dumas Spur Project Name: Dumas Spur Collected: 11/14/2012 10:10 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 James L Mertz 11/23/2012 08:45 123261848003 1 SW-846 3005A WW SW846 ICP Digest (tot rec) 01848 1 Nelli S Markaryan 11/20/2012 15:35 123245713003 1 SW-846 7470A WW SW846 Hg Digest 05713 *=This limit was used in the evaluation of the final result Page 18 of 44 ---PAGE BREAK--- LLI Sample # SW 6865646 LLI Group # 1350212 Account # 11441 Sample Description: DES-MW-1(12-12.5') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/14/2012 10:00 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DS112 As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/kg ug/kg ug/kg GC/MS Semivolatiles SW-846 8270C N.D. 1 83-32-9 10724 3 17 Acenaphthene N.D. 1 208-96-8 10724 3 17 N.D. 1 120-12-7 10724 3 17 Anthracene N.D. 1 56-55-3 10724 3 17 Benzo(a)anthracene N.D. 1 50-32-8 10724 3 17 Benzo(a)pyrene N.D. 1 205-99-2 10724 3 17 Benzo(b)fluoranthene N.D. 1 191-24-2 10724 3 17 Benzo(g,h,i)perylene N.D. 1 207-08-9 10724 3 17 Benzo(k)fluoranthene N.D. 1 218-01-9 10724 3 17 N.D. 1 53-70-3 10724 3 17 Dibenz(a,h)anthracene N.D. 1 206-44-0 10724 3 17 Fluoranthene N.D. 1 86-73-7 10724 3 17 Fluorene N.D. 1 193-39-5 10724 3 17 Indeno(1,2,3-cd)pyrene N.D. 1 91-20-3 10724 3 17 Naphthalene N.D. 1 85-01-8 10724 3 17 Phenanthrene N.D. 1 129-00-0 10724 3 17 Pyrene mg/kg mg/kg mg/kg Metals SW-846 6010B 8.13 1 7440-38-2 06935 0.324 1.96 Arsenic 101 1 7440-39-3 06946 0.0324 0.490 Barium 0.106 J 1 7440-43-9 06949 0.0324 0.490 Cadmium 18.2 1 7440-47-3 06951 0.0863 1.47 Chromium 6.45 1 7439-92-1 06955 0.461 1.47 Lead 1.19 J 1 7782-49-2 06936 0.706 1.96 Selenium N.D. 1 7440-22-4 06966 0.137 0.490 Silver mg/kg mg/kg mg/kg SW-846 7471A N.D. 1 7439-97-6 00159 0.0096 0.0928 Mercury % % % Wet Chemistry SM20 2540 G 23.7 1 n.a. 00111 0.50 0.50 Moisture "Moisture" represents the loss in weight of the sample after oven drying at 103 - 105 degrees Celsius. The moisture result reported above is on an as-received basis. General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Holly Berry 11/23/2012 22:40 12325SLC026 1 SW-846 8270C PAHs 10724 1 JoElla L Rice 11/20/2012 15:40 12325SLC026 1 SW-846 3546 BNA Soil Microwave PAH 10814 1 Eric L Eby 11/23/2012 12:27 123255708002 1 SW-846 6010B Arsenic 06935 1 Eric L Eby 11/23/2012 12:27 123255708002 1 SW-846 6010B Barium 06946 *=This limit was used in the evaluation of the final result Page 19 of 44 ---PAGE BREAK--- LLI Sample # SW 6865646 LLI Group # 1350212 Account # 11441 Sample Description: DES-MW-1(12-12.5') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/14/2012 10:00 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DS112 Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Eric L Eby 11/23/2012 12:27 123255708002 1 SW-846 6010B Cadmium 06949 1 Eric L Eby 11/23/2012 12:27 123255708002 1 SW-846 6010B Chromium 06951 1 Eric L Eby 11/23/2012 12:27 123255708002 1 SW-846 6010B Lead 06955 1 Eric L Eby 11/23/2012 12:27 123255708002 1 SW-846 6010B Selenium 06936 1 Eric L Eby 11/23/2012 12:27 123255708002 1 SW-846 6010B Silver 06966 1 Damary Valentin 11/25/2012 10:29 123255711002 1 SW-846 7471A Mercury 00159 1 Denise K Conners 11/21/2012 08:55 123255708002 1 SW-846 3050B SW SW846 ICP/ICP MS Digest 05708 1 Denise K Conners 11/21/2012 11:00 123255711002 1 SW-846 7471A modified SW SW846 Hg Digest 05711 1 Lisa J Cooke 11/26/2012 15:28 12331820002B 1 SM20 2540 G Moisture 00111 *=This limit was used in the evaluation of the final result Page 20 of 44 ---PAGE BREAK--- LLI Sample # SW 6865647 LLI Group # 1350212 Account # 11441 Sample Description: DES-MW-2(11-12') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/14/2012 11:30 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DS211 As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/kg ug/kg ug/kg GC/MS Semivolatiles SW-846 8270C N.D. 1 83-32-9 10724 3 17 Acenaphthene N.D. 1 208-96-8 10724 3 17 N.D. 1 120-12-7 10724 3 17 Anthracene N.D. 1 56-55-3 10724 3 17 Benzo(a)anthracene N.D. 1 50-32-8 10724 3 17 Benzo(a)pyrene N.D. 1 205-99-2 10724 3 17 Benzo(b)fluoranthene N.D. 1 191-24-2 10724 3 17 Benzo(g,h,i)perylene N.D. 1 207-08-9 10724 3 17 Benzo(k)fluoranthene N.D. 1 218-01-9 10724 3 17 N.D. 1 53-70-3 10724 3 17 Dibenz(a,h)anthracene N.D. 1 206-44-0 10724 3 17 Fluoranthene N.D. 1 86-73-7 10724 3 17 Fluorene N.D. 1 193-39-5 10724 3 17 Indeno(1,2,3-cd)pyrene N.D. 1 91-20-3 10724 3 17 Naphthalene N.D. 1 85-01-8 10724 3 17 Phenanthrene N.D. 1 129-00-0 10724 3 17 Pyrene mg/kg mg/kg mg/kg Metals SW-846 6010B 9.09 1 7440-38-2 06935 0.330 2.00 Arsenic 194 1 7440-39-3 06946 0.0330 0.500 Barium 0.350 J 1 7440-43-9 06949 0.0330 0.500 Cadmium 15.3 1 7440-47-3 06951 0.0880 1.50 Chromium 45.1 1 7439-92-1 06955 0.470 1.50 Lead 1.55 J 1 7782-49-2 06936 0.720 2.00 Selenium N.D. 1 7440-22-4 06966 0.140 0.500 Silver mg/kg mg/kg mg/kg SW-846 7471A 0.0173 J 1 7439-97-6 00159 0.0100 0.0972 Mercury % % % Wet Chemistry SM20 2540 G 14.8 1 n.a. 00111 0.50 0.50 Moisture "Moisture" represents the loss in weight of the sample after oven drying at 103 - 105 degrees Celsius. The moisture result reported above is on an as-received basis. General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Holly Berry 11/23/2012 23:03 12325SLC026 1 SW-846 8270C PAHs 10724 1 JoElla L Rice 11/20/2012 15:40 12325SLC026 1 SW-846 3546 BNA Soil Microwave PAH 10814 1 Eric L Eby 11/23/2012 12:31 123255708002 1 SW-846 6010B Arsenic 06935 1 Eric L Eby 11/23/2012 12:31 123255708002 1 SW-846 6010B Barium 06946 *=This limit was used in the evaluation of the final result Page 21 of 44 ---PAGE BREAK--- LLI Sample # SW 6865647 LLI Group # 1350212 Account # 11441 Sample Description: DES-MW-2(11-12') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/14/2012 11:30 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DS211 Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Eric L Eby 11/23/2012 12:31 123255708002 1 SW-846 6010B Cadmium 06949 1 Eric L Eby 11/23/2012 12:31 123255708002 1 SW-846 6010B Chromium 06951 1 Eric L Eby 11/23/2012 12:31 123255708002 1 SW-846 6010B Lead 06955 1 Eric L Eby 11/23/2012 12:31 123255708002 1 SW-846 6010B Selenium 06936 1 Eric L Eby 11/23/2012 12:31 123255708002 1 SW-846 6010B Silver 06966 1 Damary Valentin 11/25/2012 10:31 123255711002 1 SW-846 7471A Mercury 00159 1 Denise K Conners 11/21/2012 08:55 123255708002 1 SW-846 3050B SW SW846 ICP/ICP MS Digest 05708 1 Denise K Conners 11/21/2012 11:00 123255711002 1 SW-846 7471A modified SW SW846 Hg Digest 05711 1 Lisa J Cooke 11/26/2012 15:28 12331820002B 1 SM20 2540 G Moisture 00111 *=This limit was used in the evaluation of the final result Page 22 of 44 ---PAGE BREAK--- LLI Sample # SW 6865648 LLI Group # 1350212 Account # 11441 Sample Description: DES-MW-3(14-14.5') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/14/2012 13:35 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DS314 As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/kg ug/kg ug/kg GC/MS Semivolatiles SW-846 8270C N.D. 1 83-32-9 10724 3 17 Acenaphthene N.D. 1 208-96-8 10724 3 17 N.D. 1 120-12-7 10724 3 17 Anthracene N.D. 1 56-55-3 10724 3 17 Benzo(a)anthracene N.D. 1 50-32-8 10724 3 17 Benzo(a)pyrene N.D. 1 205-99-2 10724 3 17 Benzo(b)fluoranthene N.D. 1 191-24-2 10724 3 17 Benzo(g,h,i)perylene N.D. 1 207-08-9 10724 3 17 Benzo(k)fluoranthene N.D. 1 218-01-9 10724 3 17 N.D. 1 53-70-3 10724 3 17 Dibenz(a,h)anthracene N.D. 1 206-44-0 10724 3 17 Fluoranthene N.D. 1 86-73-7 10724 3 17 Fluorene N.D. 1 193-39-5 10724 3 17 Indeno(1,2,3-cd)pyrene N.D. 1 91-20-3 10724 3 17 Naphthalene N.D. 1 85-01-8 10724 3 17 Phenanthrene N.D. 1 129-00-0 10724 3 17 Pyrene mg/kg mg/kg mg/kg Metals SW-846 6010B 15.1 1 7440-38-2 06935 0.324 1.96 Arsenic 184 1 7440-39-3 06946 0.0324 0.490 Barium 0.983 1 7440-43-9 06949 0.0324 0.490 Cadmium 15.3 1 7440-47-3 06951 0.0863 1.47 Chromium 20.7 1 7439-92-1 06955 0.461 1.47 Lead 1.65 J 1 7782-49-2 06936 0.706 1.96 Selenium N.D. 1 7440-22-4 06966 0.137 0.490 Silver mg/kg mg/kg mg/kg SW-846 7471A 0.0102 J 1 7439-97-6 00159 0.0097 0.0934 Mercury % % % Wet Chemistry SM20 2540 G 13.6 1 n.a. 00111 0.50 0.50 Moisture "Moisture" represents the loss in weight of the sample after oven drying at 103 - 105 degrees Celsius. The moisture result reported above is on an as-received basis. General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Holly Berry 11/23/2012 23:26 12325SLC026 1 SW-846 8270C PAHs 10724 1 JoElla L Rice 11/20/2012 15:40 12325SLC026 1 SW-846 3546 BNA Soil Microwave PAH 10814 1 Eric L Eby 11/23/2012 12:35 123255708002 1 SW-846 6010B Arsenic 06935 1 Eric L Eby 11/23/2012 12:35 123255708002 1 SW-846 6010B Barium 06946 *=This limit was used in the evaluation of the final result Page 23 of 44 ---PAGE BREAK--- LLI Sample # SW 6865648 LLI Group # 1350212 Account # 11441 Sample Description: DES-MW-3(14-14.5') Composite Soil Dumas Spur Project Name: Dumas Spur Collected: 11/14/2012 13:35 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DS314 Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Eric L Eby 11/23/2012 12:35 123255708002 1 SW-846 6010B Cadmium 06949 1 Eric L Eby 11/23/2012 12:35 123255708002 1 SW-846 6010B Chromium 06951 1 Eric L Eby 11/23/2012 12:35 123255708002 1 SW-846 6010B Lead 06955 1 Eric L Eby 11/23/2012 12:35 123255708002 1 SW-846 6010B Selenium 06936 1 Eric L Eby 11/23/2012 12:35 123255708002 1 SW-846 6010B Silver 06966 1 Damary Valentin 11/25/2012 10:33 123255711002 1 SW-846 7471A Mercury 00159 1 Denise K Conners 11/21/2012 08:55 123255708002 1 SW-846 3050B SW SW846 ICP/ICP MS Digest 05708 1 Denise K Conners 11/21/2012 11:00 123255711002 1 SW-846 7471A modified SW SW846 Hg Digest 05711 1 Lisa J Cooke 11/26/2012 15:28 12331820002B 1 SM20 2540 G Moisture 00111 *=This limit was used in the evaluation of the final result Page 24 of 44 ---PAGE BREAK--- LLI Sample # WW 6865649 LLI Group # 1350212 Account # 11441 Sample Description: Field Blank Grab Water Dumas Spur Project Name: Dumas Spur Collected: 11/14/2012 10:30 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/l ug/l ug/l GC/MS Semivolatiles SW-846 8270C N.D. 1 83-32-9 07805 0.1 0.5 Acenaphthene N.D. 1 208-96-8 07805 0.1 0.5 N.D. 1 120-12-7 07805 0.1 0.5 Anthracene N.D. 1 56-55-3 07805 0.1 0.5 Benzo(a)anthracene N.D. 1 50-32-8 07805 0.1 0.5 Benzo(a)pyrene N.D. 1 205-99-2 07805 0.1 0.5 Benzo(b)fluoranthene N.D. 1 191-24-2 07805 0.1 0.5 Benzo(g,h,i)perylene N.D. 1 207-08-9 07805 0.1 0.5 Benzo(k)fluoranthene N.D. 1 218-01-9 07805 0.1 0.5 N.D. 1 53-70-3 07805 0.1 0.5 Dibenz(a,h)anthracene N.D. 1 206-44-0 07805 0.1 0.5 Fluoranthene N.D. 1 86-73-7 07805 0.1 0.5 Fluorene N.D. 1 193-39-5 07805 0.1 0.5 Indeno(1,2,3-cd)pyrene 0.2 J 1 91-20-3 07805 0.1 0.5 Naphthalene N.D. 1 85-01-8 07805 0.1 0.5 Phenanthrene N.D. 1 129-00-0 07805 0.1 0.5 Pyrene mg/l mg/l mg/l Metals SW-846 6010B N.D. 1 7440-38-2 07035 0.0068 0.0200 Arsenic 0.00051 J 1 7440-39-3 07046 0.00033 0.0050 Barium N.D. 1 7440-43-9 07049 0.00036 0.0050 Cadmium N.D. 1 7440-47-3 07051 0.0011 0.0150 Chromium N.D. 1 7439-92-1 07055 0.0051 0.0150 Lead N.D. 1 7782-49-2 07036 0.0075 0.0200 Selenium N.D. 1 7440-22-4 07066 0.0012 0.0050 Silver mg/l mg/l mg/l SW-846 7470A N.D. 1 7439-97-6 00259 0.000070 0.00020 Mercury General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Brian K Graham 11/22/2012 12:30 12325WAA026 1 SW-846 8270C PAHs in Water by GC/MS 07805 1 Seth A Farrier 11/20/2012 16:30 12325WAA026 1 SW-846 3510C BNA Water Extraction 07807 1 Eric L Eby 11/24/2012 11:22 123261848003 1 SW-846 6010B Arsenic 07035 1 Eric L Eby 11/24/2012 11:22 123261848003 1 SW-846 6010B Barium 07046 1 Eric L Eby 11/24/2012 11:22 123261848003 1 SW-846 6010B Cadmium 07049 1 Eric L Eby 11/24/2012 11:22 123261848003 1 SW-846 6010B Chromium 07051 1 John P Hook 11/25/2012 17:52 123261848003 1 SW-846 6010B Lead 07055 1 Eric L Eby 11/24/2012 11:22 123261848003 1 SW-846 6010B Selenium 07036 1 Eric L Eby 11/24/2012 11:22 123261848003 1 SW-846 6010B Silver 07066 1 Damary Valentin 11/21/2012 07:45 123245713003 1 SW-846 7470A Mercury 00259 *=This limit was used in the evaluation of the final result Page 25 of 44 ---PAGE BREAK--- LLI Sample # WW 6865649 LLI Group # 1350212 Account # 11441 Sample Description: Field Blank Grab Water Dumas Spur Project Name: Dumas Spur Collected: 11/14/2012 10:30 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 James L Mertz 11/23/2012 08:45 123261848003 1 SW-846 3005A WW SW846 ICP Digest (tot rec) 01848 1 Nelli S Markaryan 11/20/2012 15:35 123245713003 1 SW-846 7470A WW SW846 Hg Digest 05713 *=This limit was used in the evaluation of the final result Page 26 of 44 ---PAGE BREAK--- LLI Sample # WW 6865650 LLI Group # 1350212 Account # 11441 Sample Description: DES-MW-3 Grab Groundwater Dumas Spur Project Name: Dumas Spur Collected: 11/15/2012 07:50 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DS003 As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/l ug/l ug/l GC/MS Semivolatiles SW-846 8270C N.D. 1 83-32-9 07805 0.09 0.5 Acenaphthene N.D. 1 208-96-8 07805 0.09 0.5 N.D. 1 120-12-7 07805 0.09 0.5 Anthracene N.D. 1 56-55-3 07805 0.09 0.5 Benzo(a)anthracene N.D. 1 50-32-8 07805 0.09 0.5 Benzo(a)pyrene N.D. 1 205-99-2 07805 0.09 0.5 Benzo(b)fluoranthene N.D. 1 191-24-2 07805 0.09 0.5 Benzo(g,h,i)perylene N.D. 1 207-08-9 07805 0.09 0.5 Benzo(k)fluoranthene N.D. 1 218-01-9 07805 0.09 0.5 N.D. 1 53-70-3 07805 0.09 0.5 Dibenz(a,h)anthracene N.D. 1 206-44-0 07805 0.09 0.5 Fluoranthene N.D. 1 86-73-7 07805 0.09 0.5 Fluorene N.D. 1 193-39-5 07805 0.09 0.5 Indeno(1,2,3-cd)pyrene N.D. 1 91-20-3 07805 0.09 0.5 Naphthalene N.D. 1 85-01-8 07805 0.09 0.5 Phenanthrene N.D. 1 129-00-0 07805 0.09 0.5 Pyrene mg/l mg/l mg/l Metals SW-846 6010B N.D. 1 7440-38-2 07035 0.0068 0.0200 Arsenic 0.396 1 7440-39-3 07046 0.00033 0.0050 Barium 0.00046 J 1 7440-43-9 07049 0.00036 0.0050 Cadmium 0.0071 J 1 7440-47-3 07051 0.0011 0.0150 Chromium 0.0256 J 5 7439-92-1 07055 0.0255 0.0750 Lead Reporting limits were raised due to interference from the sample matrix. N.D. 1 7782-49-2 07036 0.0075 0.0200 Selenium N.D. 1 7440-22-4 07066 0.0012 0.0050 Silver mg/l mg/l mg/l SW-846 7470A 0.00014 J 1 7439-97-6 00259 0.000070 0.00020 Mercury General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Brian K Graham 11/22/2012 12:54 12325WAA026 1 SW-846 8270C PAHs in Water by GC/MS 07805 1 Seth A Farrier 11/20/2012 16:30 12325WAA026 1 SW-846 3510C BNA Water Extraction 07807 1 Eric L Eby 11/24/2012 11:26 123261848003 1 SW-846 6010B Arsenic 07035 1 Eric L Eby 11/24/2012 11:26 123261848003 1 SW-846 6010B Barium 07046 1 Eric L Eby 11/24/2012 11:26 123261848003 1 SW-846 6010B Cadmium 07049 1 Eric L Eby 11/24/2012 11:26 123261848003 1 SW-846 6010B Chromium 07051 5 John P Hook 11/25/2012 17:56 123261848003 1 SW-846 6010B Lead 07055 1 Eric L Eby 11/24/2012 11:26 123261848003 1 SW-846 6010B Selenium 07036 1 Eric L Eby 11/24/2012 11:26 123261848003 1 SW-846 6010B Silver 07066 1 Damary Valentin 11/21/2012 07:48 123245713003 1 SW-846 7470A Mercury 00259 *=This limit was used in the evaluation of the final result Page 27 of 44 ---PAGE BREAK--- LLI Sample # WW 6865650 LLI Group # 1350212 Account # 11441 Sample Description: DES-MW-3 Grab Groundwater Dumas Spur Project Name: Dumas Spur Collected: 11/15/2012 07:50 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DS003 Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 James L Mertz 11/23/2012 08:45 123261848003 1 SW-846 3005A WW SW846 ICP Digest (tot rec) 01848 1 Nelli S Markaryan 11/20/2012 15:35 123245713003 1 SW-846 7470A WW SW846 Hg Digest 05713 *=This limit was used in the evaluation of the final result Page 28 of 44 ---PAGE BREAK--- LLI Sample # WW 6865651 LLI Group # 1350212 Account # 11441 Sample Description: DES-MW-2 Grab Groundwater Dumas Spur Project Name: Dumas Spur Collected: 11/15/2012 08:30 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DS002 As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/l ug/l ug/l GC/MS Semivolatiles SW-846 8270C N.D. 1 83-32-9 07805 0.1 0.5 Acenaphthene N.D. 1 208-96-8 07805 0.1 0.5 N.D. 1 120-12-7 07805 0.1 0.5 Anthracene N.D. 1 56-55-3 07805 0.1 0.5 Benzo(a)anthracene N.D. 1 50-32-8 07805 0.1 0.5 Benzo(a)pyrene N.D. 1 205-99-2 07805 0.1 0.5 Benzo(b)fluoranthene N.D. 1 191-24-2 07805 0.1 0.5 Benzo(g,h,i)perylene N.D. 1 207-08-9 07805 0.1 0.5 Benzo(k)fluoranthene N.D. 1 218-01-9 07805 0.1 0.5 N.D. 1 53-70-3 07805 0.1 0.5 Dibenz(a,h)anthracene N.D. 1 206-44-0 07805 0.1 0.5 Fluoranthene N.D. 1 86-73-7 07805 0.1 0.5 Fluorene N.D. 1 193-39-5 07805 0.1 0.5 Indeno(1,2,3-cd)pyrene N.D. 1 91-20-3 07805 0.1 0.5 Naphthalene N.D. 1 85-01-8 07805 0.1 0.5 Phenanthrene N.D. 1 129-00-0 07805 0.1 0.5 Pyrene mg/l mg/l mg/l Metals SW-846 6010B N.D. 1 7440-38-2 07035 0.0068 0.0200 Arsenic 0.280 1 7440-39-3 07046 0.00033 0.0050 Barium N.D. 1 7440-43-9 07049 0.00036 0.0050 Cadmium N.D. 1 7440-47-3 07051 0.0011 0.0150 Chromium N.D. 5 7439-92-1 07055 0.0255 0.0750 Lead Reporting limits were raised due to interference from the sample matrix. N.D. 1 7782-49-2 07036 0.0075 0.0200 Selenium N.D. 1 7440-22-4 07066 0.0012 0.0050 Silver mg/l mg/l mg/l SW-846 7470A N.D. 1 7439-97-6 00259 0.000070 0.00020 Mercury General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Brian K Graham 11/22/2012 13:17 12325WAA026 1 SW-846 8270C PAHs in Water by GC/MS 07805 1 Seth A Farrier 11/20/2012 16:30 12325WAA026 1 SW-846 3510C BNA Water Extraction 07807 1 Eric L Eby 11/24/2012 11:30 123261848003 1 SW-846 6010B Arsenic 07035 1 Eric L Eby 11/24/2012 11:30 123261848003 1 SW-846 6010B Barium 07046 1 Eric L Eby 11/24/2012 11:30 123261848003 1 SW-846 6010B Cadmium 07049 1 Eric L Eby 11/24/2012 11:30 123261848003 1 SW-846 6010B Chromium 07051 5 John P Hook 11/25/2012 18:00 123261848003 1 SW-846 6010B Lead 07055 1 Eric L Eby 11/24/2012 11:30 123261848003 1 SW-846 6010B Selenium 07036 1 Eric L Eby 11/24/2012 11:30 123261848003 1 SW-846 6010B Silver 07066 1 Damary Valentin 11/21/2012 07:50 123245713003 1 SW-846 7470A Mercury 00259 *=This limit was used in the evaluation of the final result Page 29 of 44 ---PAGE BREAK--- LLI Sample # WW 6865651 LLI Group # 1350212 Account # 11441 Sample Description: DES-MW-2 Grab Groundwater Dumas Spur Project Name: Dumas Spur Collected: 11/15/2012 08:30 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DS002 Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 James L Mertz 11/23/2012 08:45 123261848003 1 SW-846 3005A WW SW846 ICP Digest (tot rec) 01848 1 Nelli S Markaryan 11/20/2012 15:35 123245713003 1 SW-846 7470A WW SW846 Hg Digest 05713 *=This limit was used in the evaluation of the final result Page 30 of 44 ---PAGE BREAK--- LLI Sample # WW 6865652 LLI Group # 1350212 Account # 11441 Sample Description: DES-MW-1 Grab Groundwater Dumas Spur Project Name: Dumas Spur Collected: 11/15/2012 09:10 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DS001 As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/l ug/l ug/l GC/MS Semivolatiles SW-846 8270C N.D. 1 83-32-9 07805 0.1 0.7 Acenaphthene N.D. 1 208-96-8 07805 0.1 0.7 N.D. 1 120-12-7 07805 0.1 0.7 Anthracene N.D. 1 56-55-3 07805 0.1 0.7 Benzo(a)anthracene N.D. 1 50-32-8 07805 0.1 0.7 Benzo(a)pyrene N.D. 1 205-99-2 07805 0.1 0.7 Benzo(b)fluoranthene N.D. 1 191-24-2 07805 0.1 0.7 Benzo(g,h,i)perylene N.D. 1 207-08-9 07805 0.1 0.7 Benzo(k)fluoranthene N.D. 1 218-01-9 07805 0.1 0.7 N.D. 1 53-70-3 07805 0.1 0.7 Dibenz(a,h)anthracene N.D. 1 206-44-0 07805 0.1 0.7 Fluoranthene N.D. 1 86-73-7 07805 0.1 0.7 Fluorene N.D. 1 193-39-5 07805 0.1 0.7 Indeno(1,2,3-cd)pyrene N.D. 1 91-20-3 07805 0.1 0.7 Naphthalene N.D. 1 85-01-8 07805 0.1 0.7 Phenanthrene N.D. 1 129-00-0 07805 0.1 0.7 Pyrene mg/l mg/l mg/l Metals SW-846 6010B 0.0130 J 1 7440-38-2 07035 0.0068 0.0200 Arsenic 0.703 1 7440-39-3 07046 0.00033 0.0050 Barium N.D. 1 7440-43-9 07049 0.00036 0.0050 Cadmium 0.0542 1 7440-47-3 07051 0.0011 0.0150 Chromium 0.0451 J 5 7439-92-1 07055 0.0255 0.0750 Lead Reporting limits were raised due to interference from the sample matrix. N.D. 1 7782-49-2 07036 0.0075 0.0200 Selenium N.D. 1 7440-22-4 07066 0.0012 0.0050 Silver mg/l mg/l mg/l SW-846 7470A N.D. 1 7439-97-6 00259 0.000070 0.00020 Mercury General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Brian K Graham 11/22/2012 13:42 12325WAA026 1 SW-846 8270C PAHs in Water by GC/MS 07805 1 Seth A Farrier 11/20/2012 16:30 12325WAA026 1 SW-846 3510C BNA Water Extraction 07807 1 Eric L Eby 11/24/2012 11:42 123261848003 1 SW-846 6010B Arsenic 07035 1 Eric L Eby 11/24/2012 11:42 123261848003 1 SW-846 6010B Barium 07046 1 Eric L Eby 11/24/2012 11:42 123261848003 1 SW-846 6010B Cadmium 07049 1 Eric L Eby 11/24/2012 11:42 123261848003 1 SW-846 6010B Chromium 07051 5 John P Hook 11/25/2012 18:04 123261848003 1 SW-846 6010B Lead 07055 1 Eric L Eby 11/24/2012 11:42 123261848003 1 SW-846 6010B Selenium 07036 1 Eric L Eby 11/24/2012 11:42 123261848003 1 SW-846 6010B Silver 07066 1 Damary Valentin 11/21/2012 07:52 123245713003 1 SW-846 7470A Mercury 00259 *=This limit was used in the evaluation of the final result Page 31 of 44 ---PAGE BREAK--- LLI Sample # WW 6865652 LLI Group # 1350212 Account # 11441 Sample Description: DES-MW-1 Grab Groundwater Dumas Spur Project Name: Dumas Spur Collected: 11/15/2012 09:10 by JA Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DS001 Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 James L Mertz 11/23/2012 08:45 123261848003 1 SW-846 3005A WW SW846 ICP Digest (tot rec) 01848 1 Nelli S Markaryan 11/20/2012 15:35 123245713003 1 SW-846 7470A WW SW846 Hg Digest 05713 *=This limit was used in the evaluation of the final result Page 32 of 44 ---PAGE BREAK--- LLI Sample # WW 6865653 LLI Group # 1350212 Account # 11441 Sample Description: Duplicate Grab Groundwater Dumas Spur Project Name: Dumas Spur Collected: n.a. Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DP2-- As Received Limit of Quantitation As Received Method Detection Limit* As Received Result Analysis Name CAS Number Dilution Factor CAT No. ug/l ug/l ug/l GC/MS Semivolatiles SW-846 8270C N.D. 1 83-32-9 07805 0.1 0.5 Acenaphthene N.D. 1 208-96-8 07805 0.1 0.5 N.D. 1 120-12-7 07805 0.1 0.5 Anthracene N.D. 1 56-55-3 07805 0.1 0.5 Benzo(a)anthracene N.D. 1 50-32-8 07805 0.1 0.5 Benzo(a)pyrene N.D. 1 205-99-2 07805 0.1 0.5 Benzo(b)fluoranthene N.D. 1 191-24-2 07805 0.1 0.5 Benzo(g,h,i)perylene N.D. 1 207-08-9 07805 0.1 0.5 Benzo(k)fluoranthene N.D. 1 218-01-9 07805 0.1 0.5 N.D. 1 53-70-3 07805 0.1 0.5 Dibenz(a,h)anthracene N.D. 1 206-44-0 07805 0.1 0.5 Fluoranthene N.D. 1 86-73-7 07805 0.1 0.5 Fluorene N.D. 1 193-39-5 07805 0.1 0.5 Indeno(1,2,3-cd)pyrene N.D. 1 91-20-3 07805 0.1 0.5 Naphthalene N.D. 1 85-01-8 07805 0.1 0.5 Phenanthrene N.D. 1 129-00-0 07805 0.1 0.5 Pyrene mg/l mg/l mg/l Metals SW-846 6010B N.D. 1 7440-38-2 07035 0.0068 0.0200 Arsenic 0.281 1 7440-39-3 07046 0.00033 0.0050 Barium N.D. 1 7440-43-9 07049 0.00036 0.0050 Cadmium N.D. 1 7440-47-3 07051 0.0011 0.0150 Chromium N.D. 5 7439-92-1 07055 0.0255 0.0750 Lead Reporting limits were raised due to interference from the sample matrix. N.D. 1 7782-49-2 07036 0.0075 0.0200 Selenium N.D. 1 7440-22-4 07066 0.0012 0.0050 Silver mg/l mg/l mg/l SW-846 7470A N.D. 1 7439-97-6 00259 0.000070 0.00020 Mercury General Sample Comments All QC is compliant unless otherwise noted. Please refer to the Quality Control Summary for overall QC performance data and associated samples. Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 Brian K Graham 11/21/2012 05:07 12325WAB026 1 SW-846 8270C PAHs in Water by GC/MS 07805 1 Seth A Farrier 11/20/2012 16:30 12325WAB026 1 SW-846 3510C BNA Water Extraction 07807 1 Eric L Eby 11/24/2012 11:46 123261848003 1 SW-846 6010B Arsenic 07035 1 Eric L Eby 11/24/2012 11:46 123261848003 1 SW-846 6010B Barium 07046 1 Eric L Eby 11/24/2012 11:46 123261848003 1 SW-846 6010B Cadmium 07049 1 Eric L Eby 11/24/2012 11:46 123261848003 1 SW-846 6010B Chromium 07051 5 John P Hook 11/25/2012 18:08 123261848003 1 SW-846 6010B Lead 07055 1 Eric L Eby 11/24/2012 11:46 123261848003 1 SW-846 6010B Selenium 07036 1 Eric L Eby 11/24/2012 11:46 123261848003 1 SW-846 6010B Silver 07066 1 Damary Valentin 11/21/2012 07:54 123245713003 1 SW-846 7470A Mercury 00259 *=This limit was used in the evaluation of the final result Page 33 of 44 ---PAGE BREAK--- LLI Sample # WW 6865653 LLI Group # 1350212 Account # 11441 Sample Description: Duplicate Grab Groundwater Dumas Spur Project Name: Dumas Spur Collected: n.a. Submitted: 11/17/2012 09:30 Tetra Tech Reported: 11/27/2012 14:06 Suite 2 2525 Palmer Street Missoula MT 59808 DP2-- Method Analysis Name CAT No. Analysis Date and Time Batch# Trial# Dilution Factor Analyst Laboratory Sample Analysis Record 1 James L Mertz 11/23/2012 08:45 123261848003 1 SW-846 3005A WW SW846 ICP Digest (tot rec) 01848 1 Nelli S Markaryan 11/20/2012 15:35 123245713003 1 SW-846 7470A WW SW846 Hg Digest 05713 *=This limit was used in the evaluation of the final result Page 34 of 44 ---PAGE BREAK--- Page 1 of 5 Quality Control Summary Client Name: Tetra Tech Group Number: 1350212 Reported: 11/27/12 at 02:06 PM Outside of specification **-This limit was used in the evaluation of the final result for the blank The result for one or both determinations was less than five times the LOQ. The unspiked result was more than four times the spike added. Matrix QC may not be reported if insufficient sample or site-specific QC samples were not submitted. In these situations, to demonstrate precision and accuracy at a batch level, a LCS/LCSD was performed, unless otherwise specified in the method. All Inorganic Initial Calibration and Continuing Calibration Blanks met acceptable method criteria unless otherwise noted on the Analysis Report. Laboratory Compliance Quality Control Blank Blank Blank Report LCS LCSD LCS/LCSD Analysis Name Result MDL** LOQ Units %REC %REC Limits RPD RPD Max Batch number: 12325SLC026 Sample number(s): 6865638-6865644,6865646-6865648 Acenaphthene N.D. 3. 17 ug/kg 100 83-111 N.D. 3. 17 ug/kg 111 83-127 Anthracene N.D. 3. 17 ug/kg 103 83-111 Benzo(a)anthracene N.D. 3. 17 ug/kg 109 73-123 Benzo(a)pyrene N.D. 3. 17 ug/kg 94 80-123 Benzo(b)fluoranthene N.D. 3. 17 ug/kg 93 76-124 Benzo(g,h,i)perylene N.D. 3. 17 ug/kg 106 77-122 Benzo(k)fluoranthene N.D. 3. 17 ug/kg 106 71-135 N.D. 3. 17 ug/kg 111 73-119 Dibenz(a,h)anthracene N.D. 3. 17 ug/kg 110 67-129 Fluoranthene N.D. 3. 17 ug/kg 116* 80-113 Fluorene N.D. 3. 17 ug/kg 103 81-117 Indeno(1,2,3-cd)pyrene N.D. 3. 17 ug/kg 108 64-128 Naphthalene N.D. 3. 17 ug/kg 98 77-115 Phenanthrene N.D. 3. 17 ug/kg 101 77-119 Pyrene N.D. 3. 17 ug/kg 100 80-121 Batch number: 12325WAA026 Sample number(s): 6865645,6865649-6865652 Acenaphthene N.D. 0.1 0.5 ug/l 99 75-114 N.D. 0.1 0.5 ug/l 120 80-122 Anthracene N.D. 0.1 0.5 ug/l 103 76-115 Benzo(a)anthracene N.D. 0.1 0.5 ug/l 111 75-116 Benzo(a)pyrene N.D. 0.1 0.5 ug/l 93 81-123 Benzo(b)fluoranthene N.D. 0.1 0.5 ug/l 102 66-125 Benzo(g,h,i)perylene N.D. 0.1 0.5 ug/l 109 80-123 Benzo(k)fluoranthene N.D. 0.1 0.5 ug/l 94 81-122 N.D. 0.1 0.5 ug/l 100 76-116 Dibenz(a,h)anthracene N.D. 0.1 0.5 ug/l 118 80-126 Fluoranthene N.D. 0.1 0.5 ug/l 111 76-119 Fluorene N.D. 0.1 0.5 ug/l 104 76-116 Indeno(1,2,3-cd)pyrene N.D. 0.1 0.5 ug/l 110 69-121 Naphthalene N.D. 0.1 0.5 ug/l 95 70-111 Phenanthrene N.D. 0.1 0.5 ug/l 100 76-113 Pyrene N.D. 0.1 0.5 ug/l 102 75-119 Batch number: 12325WAB026 Sample number(s): 6865653 Acenaphthene N.D. 0.1 0.5 ug/l 97 96 75-114 1 30 N.D. 0.1 0.5 ug/l 115 115 80-122 0 30 Anthracene N.D. 0.1 0.5 ug/l 105 104 76-115 1 30 Benzo(a)anthracene N.D. 0.1 0.5 ug/l 107 106 75-116 1 30 Benzo(a)pyrene N.D. 0.1 0.5 ug/l 91 90 81-123 0 30 Benzo(b)fluoranthene N.D. 0.1 0.5 ug/l 96 98 66-125 2 30 Benzo(g,h,i)perylene N.D. 0.1 0.5 ug/l 106 107 80-123 2 30 Page 35 of 44 ---PAGE BREAK--- Page 2 of 5 Quality Control Summary Client Name: Tetra Tech Group Number: 1350212 Reported: 11/27/12 at 02:06 PM Outside of specification **-This limit was used in the evaluation of the final result for the blank The result for one or both determinations was less than five times the LOQ. The unspiked result was more than four times the spike added. Blank Blank Blank Report LCS LCSD LCS/LCSD Analysis Name Result MDL** LOQ Units %REC %REC Limits RPD RPD Max Benzo(k)fluoranthene N.D. 0.1 0.5 ug/l 94 93 81-122 1 30 N.D. 0.1 0.5 ug/l 96 95 76-116 1 30 Dibenz(a,h)anthracene N.D. 0.1 0.5 ug/l 116 114 80-126 1 30 Fluoranthene N.D. 0.1 0.5 ug/l 111 108 76-119 2 30 Fluorene N.D. 0.1 0.5 ug/l 101 100 76-116 1 30 Indeno(1,2,3-cd)pyrene N.D. 0.1 0.5 ug/l 106 106 69-121 0 30 Naphthalene N.D. 0.1 0.5 ug/l 94 92 70-111 2 30 Phenanthrene N.D. 0.1 0.5 ug/l 99 98 76-113 1 30 Pyrene N.D. 0.1 0.5 ug/l 98 98 75-119 0 30 Batch number: 123245713003 Sample number(s): 6865645,6865649-6865653 Mercury N.D. 0.00007 0 0.00020 mg/l 98 80-120 Batch number: 123255708002 Sample number(s): 6865638-6865644,6865646-6865648 Arsenic N.D. 0.327 1.98 mg/kg 100 80-120 Barium 0.0396 J 0.0327 0.495 mg/kg 104 80-120 Cadmium N.D. 0.0327 0.495 mg/kg 103 80-120 Chromium N.D. 0.0871 1.49 mg/kg 104 80-120 Lead N.D. 0.465 1.49 mg/kg 105 80-120 Selenium N.D. 0.713 1.98 mg/kg 101 80-120 Silver N.D. 0.139 0.495 mg/kg 97 80-120 Batch number: 123255711002 Sample number(s): 6865638-6865644,6865646-6865648 Mercury N.D. 0.0103 0.0997 mg/kg 99 80-120 Batch number: 123261848003 Sample number(s): 6865645,6865649-6865653 Arsenic N.D. 0.0068 0.0200 mg/l 100 80-120 Barium N.D. 0.00033 0.0050 mg/l 104 90-110 Cadmium N.D. 0.00036 0.0050 mg/l 101 90-112 Chromium N.D. 0.0011 0.0150 mg/l 105 90-110 Lead N.D. 0.0051 0.0150 mg/l 105 88-110 Selenium N.D. 0.0075 0.0200 mg/l 95 80-120 Silver N.D. 0.0012 0.0050 mg/l 105 80-120 Batch number: 12331820002B Sample number(s): 6865638-6865644,6865646-6865648 Moisture 100 99-101 Sample Matrix Quality Control Unspiked (UNSPK) = the sample used in conjunction with the matrix spike Background (BKG) = the sample used in conjunction with the duplicate MS MSD MS/MSD RPD BKG DUP DUP Dup RPD Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max___ Batch number: 12325SLC026 Sample number(s): 6865638-6865644,6865646-6865648 UNSPK: P864704 Acenaphthene 101 101 33-140 0 30 112 111 47-137 1 30 Anthracene 102 104 40-147 2 30 Benzo(a)anthracene 101 104 32-150 2 30 Benzo(a)pyrene 90 92 30-150 2 30 Benzo(b)fluoranthene 98 96 29-150 2 30 Benzo(g,h,i)perylene 96 94 31-152 2 30 Page 36 of 44 ---PAGE BREAK--- Page 3 of 5 Quality Control Summary Client Name: Tetra Tech Group Number: 1350212 Reported: 11/27/12 at 02:06 PM Outside of specification **-This limit was used in the evaluation of the final result for the blank The result for one or both determinations was less than five times the LOQ. The unspiked result was more than four times the spike added. Sample Matrix Quality Control Unspiked (UNSPK) = the sample used in conjunction with the matrix spike Background (BKG) = the sample used in conjunction with the duplicate MS MSD MS/MSD RPD BKG DUP DUP Dup RPD Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max___ Benzo(k)fluoranthene 101 100 35-148 1 30 99 101 33-142 2 30 Dibenz(a,h)anthracene 103 98 37-151 4 30 Fluoranthene 106 109 30-151 2 30 Fluorene 103 105 36-140 2 30 Indeno(1,2,3-cd)pyrene 100 99 31-154 1 30 Naphthalene 96 98 35-141 2 30 Phenanthrene 98 100 34-147 1 30 Pyrene 100 102 29-148 2 30 Batch number: 12325WAA026 Sample number(s): 6865645,6865649-6865652 UNSPK: P864767 Acenaphthene 93 107 78-107 9 30 114 123 75-124 8 30 Anthracene 101 106 78-114 6 30 Benzo(a)anthracene 108 109 76-114 2 30 Benzo(a)pyrene 88 92 80-128 5 30 Benzo(b)fluoranthene 98 101 75-127 4 30 Benzo(g,h,i)perylene 105 109 72-122 4 30 Benzo(k)fluoranthene 86 93 71-121 8 30 95 99 78-116 5 30 Dibenz(a,h)anthracene 113 118 73-133 6 30 Fluoranthene 107 112* 73-110 5 30 Fluorene 98 107 71-123 9 30 Indeno(1,2,3-cd)pyrene 106 111 79-127 6 30 Naphthalene 98 109 73-113 5 30 Phenanthrene 97 101 72-121 5 30 Pyrene 95 100 77-117 6 30 Batch number: 123245713003 Sample number(s): 6865645,6865649-6865653 UNSPK: P846168 BKG: P846168 Mercury 94 91 80-120 3 20 N.D. N.D. 0 20 Batch number: 123255708002 Sample number(s): 6865638-6865644,6865646-6865648 UNSPK: P863555 BKG: P863555 Arsenic 96 97 75-125 1 20 0.804 J 0.477 J 51* 20 Barium 100 101 75-125 1 20 29.0 27.2 6 20 Cadmium 97 98 75-125 1 20 N.D. 0.0450 J 200* 20 Chromium 107 109 75-125 2 20 8.86 8.95 1 20 Lead 96 97 75-125 1 20 2.41 2.37 2 20 Selenium 98 99 75-125 1 20 N.D. N.D. 0 20 Silver 93 93 75-125 1 20 N.D. N.D. 0 20 Batch number: 123255711002 Sample number(s): 6865638-6865644,6865646-6865648 UNSPK: P863555 BKG: P863555 Mercury 106 104 80-120 2 20 N.D. N.D. 0 20 Batch number: 123261848003 Sample number(s): 6865645,6865649-6865653 UNSPK: P862765 BKG: P862765 Arsenic 108 106 81-123 2 20 0.0662 0.0688 4 20 Barium 102 97 78-118 4 20 0.514 0.510 1 20 Cadmium 93 93 83-116 1 20 N.D. N.D. 0 20 Chromium 98 94 81-120 4 20 0.0138 J 0.0142 J 4 20 Lead 93 93 75-125 0 20 N.D. N.D. 0 20 Selenium 105 103 75-125 2 20 N.D. N.D. 0 20 Silver 116 111 75-125 5 20 N.D. N.D. 0 20 Page 37 of 44 ---PAGE BREAK--- Page 4 of 5 Quality Control Summary Client Name: Tetra Tech Group Number: 1350212 Reported: 11/27/12 at 02:06 PM Outside of specification **-This limit was used in the evaluation of the final result for the blank The result for one or both determinations was less than five times the LOQ. The unspiked result was more than four times the spike added. Sample Matrix Quality Control Unspiked (UNSPK) = the sample used in conjunction with the matrix spike Background (BKG) = the sample used in conjunction with the duplicate MS MSD MS/MSD RPD BKG DUP DUP Dup RPD Analysis Name %REC %REC Limits RPD MAX Conc Conc RPD Max___ Batch number: 12331820002B Sample number(s): 6865638-6865644,6865646-6865648 BKG: 6865643 Moisture 20.9 20.8 0 13 Surrogate Quality Control Surrogate recoveries which are outside of the QC window are confirmed unless attributed to dilution or otherwise noted on the Analysis Report. Analysis Name: PAHs Batch number: 12325SLC026 Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 6865638 105 94 [PHONE REDACTED] 98 91 95 6865640 105 94 [PHONE REDACTED] 104 95 [PHONE REDACTED] 108 97 99 6865643 111 100 [PHONE REDACTED] 109 96 [PHONE REDACTED] 106 94 [PHONE REDACTED] 108 97 [PHONE REDACTED] 108 97 105 Blank 114 102 109 LCS 120 105 114 MS 116 102 109 MSD 119 105 113 Limits: 45-123 47-126 46-143 Analysis Name: PAHs in Water by GC/MS Batch number: 12325WAA026 Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 6865645 102 106 [PHONE REDACTED] 101 106 [PHONE REDACTED] 104 108 [PHONE REDACTED] 99 106 [PHONE REDACTED] 99 104 99 Blank 92 93 102 LCS 102 107 112 MS 98 103 107 MSD 102 108 110 Limits: 52-120 63-114 51-149 Analysis Name: PAHs in Water by GC/MS Batch number: 12325WAB026 Nitrobenzene-d5 2-Fluorobiphenyl Terphenyl-d14 Page 38 of 44 ---PAGE BREAK--- Page 5 of 5 Quality Control Summary Client Name: Tetra Tech Group Number: 1350212 Reported: 11/27/12 at 02:06 PM Outside of specification **-This limit was used in the evaluation of the final result for the blank The result for one or both determinations was less than five times the LOQ. The unspiked result was more than four times the spike added. Surrogate Quality Control 6865653 95 102 108 Blank 93 99 111 LCS 91 98 107 LCSD 89 97 105 Limits: 52-120 63-114 51-149 Page 39 of 44 ---PAGE BREAK--- Page 40 of 44 ---PAGE BREAK--- Page 41 of 44 ---PAGE BREAK--- Page 42 of 44 ---PAGE BREAK--- Page 43 of 44 ---PAGE BREAK--- Explanation of Symbols and Abbreviations The following defines common symbols and abbreviations used in reporting technical data: RL Reporting Limit BMQL Below Minimum Quantitation Level N.D. none detected MPN Most Probable Number TNTC Too Numerous To Count CP Units cobalt-chloroplatinate units IU International Units NTU nephelometric turbidity units umhos/cm micromhos/cm ng nanogram(s) C degrees Celsius F degrees Fahrenheit meq milliequivalents lb. pound(s) g gram(s) kg kilogram(s) µg microgram(s) mg milligram(s) mL milliliter(s) L liter(s) m3 cubic meter(s) µL microliter(s) pg/L picogram/liter < less than - The number following the sign is the limit of quantitation, the smallest amount of analyte which can be reliably determined using this specific test. > greater than J estimated value – The result is ≥ the Method Detection Limit (MDL) and < the Limit of Quantitation (LOQ). ppm parts per million - One ppm is equivalent to one milligram per kilogram (mg/kg), or one gram per million grams. For aqueous liquids, ppm is usually taken to be equivalent to milligrams per liter (mg/l), because one liter of water has a weight very close to a kilogram. For gases or vapors, one ppm is equivalent to one microliter of gas per liter of gas. ppb parts per billion Dry weight Results printed under this heading have been adjusted for moisture content. This increases the analyte weight basis concentration to approximate the value present in a similar sample without moisture. All other results are reported on an as-received basis. U.S. EPA CLP Data Qualifiers: Organic Qualifiers Inorganic Qualifiers A TIC is a possible aldol-condensation product B Value is 25% * Duplicate analysis not within control limits U Compound was not detected + Correlation coefficient for MSA <0.995 X,Y,Z Defined in case narrative Analytical test results meet all requirements of NELAC unless otherwise noted under the individual analysis. Measurement uncertainty values, as applicable, are available upon request. Tests results relate only to the sample tested. Clients should be aware that a critical step in a chemical or microbiological analysis is the collection of the sample. Unless the sample analyzed is truly representative of the bulk of material involved, the test results will be meaningless. If you have questions regarding the proper techniques of collecting samples, please contact us. We cannot be held responsible for sample integrity, however, unless sampling has been performed by a member of our staff. This report shall not be reproduced except in full, without the written approval of the laboratory. Times are local to the area of activity. Parameters listed in the 40 CFR part 136 Table II as “analyze immediately” are not performed within 15 minutes. WARRANTY AND LIMITS OF LIABILITY - In accepting analytical work, we warrant the accuracy of test results for the sample as submitted. THE FOREGOING EXPRESS WARRANTY IS EXCLUSIVE AND IS GIVEN IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED. WE DISCLAIM ANY OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING A WARRANTY OF FITNESS FOR PARTICULAR PURPOSE AND WARRANTY OF MERCHANTABILITY. IN NO EVENT SHALL LANCASTER LABORATORIES BE LIABLE FOR INDIRECT, SPECIAL, CONSEQUENTIAL, OR INCIDENTAL DAMAGES INCLUDING, BUT NOT LIMITED TO, DAMAGES FOR LOSS OF PROFIT OR GOODWILL REGARDLESS OF THE NEGLIGENCE (EITHER SOLE OR CONCURRENT) OF LANCASTER LABORATORIES AND WHETHER LANCASTER LABORATORIES HAS BEEN INFORMED OF THE POSSIBILITY OF SUCH DAMAGES. We accept no legal responsibility for the purposes for which the client uses the test results. No purchase order or other order for work shall be accepted by Lancaster Laboratories which includes any conditions that vary from the Standard Terms and Conditions, and Lancaster hereby objects to any conflicting terms contained in any acceptance or order submitted by client. 3768.07 Page 44 of 44 ---PAGE BREAK--- APPENDIX D FIELD FORMS ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- ---PAGE BREAK--- APPENDIX E IDEQ REM FORMS ---PAGE BREAK--- NDU ---PAGE BREAK--- LIST OF SELECTED CHEMICALS Chemicals of Concern CAS Number Acenaphthene 83-32-9 208-96-8 Anthracene 120-12-7 Arsenic 7440-38-2 Barium 7440-39-3 Benzo(a)anthracene 56-55-3 Benzo(a)pyrene 50-32-8 Benzo(b)fluoranthene 205-99-2 Benzo(g,h,i)perylene 191-24-2 Benzo(k)fluoranthene 207-08-9 Cadmium 7440-43-9 Chromium (III) total Cr 7440-47-3 218-01-9 Dibenzo(a,h)anthracene 53-70-3 Fluoranthene 206-44-0 Fluorene 86-73-7 Indeno(1,2,3-cd)pyrene 193-39-5 Lead 7439-92-1 Mercury 7439-97-6 Naphthalene 91-20-3 Phenanthrene 85-01-8 Pyrene 129-00-0 Selenium 7782-49-2 Silver 7440-22-4 Notes: Chem Database Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\NDU Page 1 of 1 Sheet name COC ---PAGE BREAK--- RECEPTOR(S) AND ROUTE(S) OF EXPOSURE (Select by clicking the checkboxes) CHILD AGE-ADJUSTED Surficial Soil Ingestion of Soil, Outdoor Inhalation of Vapor Emissions and Particulates, and Dermal Contact with Soil Subsurface Soil Indoor Inhalation of Vapor Emissions Groundwater Indoor Inhalation of Vapor Emissions Soil-Vapor ( RE-2 only) Indoor Inhalation of Vapor Emissions Groundwater Protection Option 1. Option 2. Surface Water Protection If a surface water body is impacted or threatened, complete the following: If Ammonia is a potential COC for surface water, complete the following: SOURCE AND ROUTES OF EXPOSURES RECEPTOR Groundwater with Current Use or High Probability of Future Use as Drinking Water: The Maximum Contaminant Levels (MCLs) are used as the target concentrations at the POE. For chemicals without MCLs, risk-based ingestion standard for an age-adjusted adult is used. RESIDENT NON-RESIDENTIAL CONSTRUCTION WORKER Surface water supports warm water aquatic species? Surface water is used for drinking/water quality is appropriate for drinking water supplies? Surface water supports aquatic life? Surface water is used for recreational activities? Surface water supports cold water aquatic species? Groundwater with Low Probability of Future Use as Drinking Water: Groundwater concentrations protective of off-site receptors resulting from exposure via pathways other than direct ingestion. These pathways include but are not limited to volatilization to indoor air, irrigation water use with crop uptake and ingestion, and irrigation water use without crop uptake. Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\NDU Page 1 of 1 Sheet name ROE ---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 Acenaphthene 1.60E-02 4.90E-02 Anthracene 6.10E-02 Arsenic 3.89E+00 1.30E-02 1.30E-02 Barium 2.75E+02 7.03E-01 7.03E-01 Benzo(a)anthracene 2.50E-01 Benzo(a)pyrene 2.80E-01 Benzo(b)fluoranthene 3.50E-01 Benzo(g,h,i)perylene 2.20E-01 Benzo(k)fluoranthene 1.30E-01 Cadmium 4.67E-01 4.60E-04 4.60E-04 Chromium (III) total Cr 1.74E+01 1.82E+01 5.24E-02 5.42E-02 2.40E-01 Dibenzo(a,h)anthracene 4.90E-02 Fluoranthene 5.00E-01 Fluorene 1.60E-02 Indeno(1,2,3-cd)pyrene 1.80E-01 Lead 1.97E+02 4.51E-02 4.51E-02 Mercury 1.63E-01 1.40E-04 1.40E-04 Naphthalene 3.30E-02 Phenanthrene 2.20E-01 Pyrene 4.60E-01 Selenium 7.68E-01 7.50E-03 7.50E-03 Silver 1.83E-01 1.20E-03 1.20E-03 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] Representative Concentration [mg/L] Representative Concentration [mg/kg] USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 PRINT RISK EVALUATION MAIN MENU Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\NDU 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 Acenaphthene 1.60E-02 4.90E-02 Anthracene 6.10E-02 Arsenic 3.79E+00 9.09E+00 1.30E-02 Barium 2.43E+02 1.94E+02 7.03E-01 Benzo(a)anthracene 2.50E-01 Benzo(a)pyrene 2.80E-01 Benzo(b)fluoranthene 3.50E-01 Benzo(g,h,i)perylene 2.20E-01 Benzo(k)fluoranthene 1.30E-01 Cadmium 4.53E-01 9.83E-01 4.60E-04 Chromium (III) total Cr 1.74E+01 1.82E+01 5.24E-02 2.40E-01 Dibenzo(a,h)anthracene 4.90E-02 Fluoranthene 5.00E-01 Fluorene 1.60E-02 Indeno(1,2,3-cd)pyrene 1.80E-01 Lead 1.24E+02 4.51E+01 4.51E-02 Mercury 1.32E-01 1.73E-02 1.40E-04 Naphthalene 3.30E-02 Phenanthrene 2.20E-01 Pyrene 4.60E-01 Selenium 1.65E+00 7.50E-03 Silver 1.42E-01 1.20E-03 Representative Concentration [mg/kg] Representative Concentration [mg/L] Representative Concentration [mg/kg] USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\NDU Page 1 of 1 Sheet name REPC-NRES ---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 Acenaphthene NTOX 6.79E-06 NTOX 2.02E-06 NTOX 2.08E-05 NTOX 6.19E-06 Anthracene NTOX 5.29E-06 NTOX 1.56E-06 Arsenic 6.73E-06 1.75E-01 NPCP NPCP 9.96E-06 5.16E-02 NPCP NPCP Barium NTOX 4.35E-02 NPCP NPCP NTOX 1.28E-02 NPCP NPCP Benzo(a)anthracene 3.99E-07 NTOX 5.93E-07 NTOX Benzo(a)pyrene 4.47E-06 NTOX 6.64E-06 NTOX Benzo(b)fluoranthene 5.59E-07 NTOX 8.30E-07 NTOX Benzo(g,h,i)perylene NTOX 1.87E-04 NTOX 5.55E-05 Benzo(k)fluoranthene 2.07E-08 NTOX 3.08E-08 NTOX Cadmium 4.24E-12 9.32E-03 NPCP NPCP NTOX 2.75E-03 NPCP NPCP Chromium (III) total Cr NTOX 1.28E-04 NTOX NTOX NPCP NPCP NTOX 3.79E-05 NTOX NTOX NPCP NPCP 3.85E-09 NTOX 5.71E-09 NTOX Dibenzo(a,h)anthracene 7.81E-07 NTOX 1.16E-06 NTOX Fluoranthene NTOX 3.21E-04 NTOX 9.51E-05 Fluorene NTOX 1.06E-05 NTOX 3.10E-06 Indeno(1,2,3-cd)pyrene 2.87E-07 NTOX 4.27E-07 NTOX Lead NTOX NTOX NPCP NPCP NTOX NTOX NPCP NPCP Mercury NTOX 6.01E-03 NPCP NPCP NTOX 1.77E-03 NPCP NPCP Naphthalene NTOX 2.91E-04 NTOX 5.74E-05 Phenanthrene NTOX 1.87E-04 NTOX 5.55E-05 Pyrene NTOX 3.93E-04 NTOX 1.17E-04 Selenium NTOX 1.70E-03 NPCP NPCP NTOX 5.01E-04 NPCP NPCP Silver NTOX 4.05E-04 NPCP NPCP NTOX 1.19E-04 NPCP NPCP 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 RISK EVALUATION MAIN MENU Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\NDU Page 1 of 1 Sheet name RISK R ---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 Acenaphthene 1.60E-02 4.90E-02 Anthracene 6.10E-02 Arsenic 3.79E+00 Barium 2.43E+02 Benzo(a)anthracene 2.50E-01 Benzo(a)pyrene 2.80E-01 Benzo(b)fluoranthene 3.50E-01 Benzo(g,h,i)perylene 2.20E-01 Benzo(k)fluoranthene 1.30E-01 Cadmium 4.53E-01 Chromium (III) total Cr 1.74E+01 2.40E-01 Dibenzo(a,h)anthracene 4.90E-02 Fluoranthene 5.00E-01 Fluorene 1.60E-02 Indeno(1,2,3-cd)pyrene 1.80E-01 Lead 1.24E+02 Mercury 1.32E-01 Naphthalene 3.30E-02 Phenanthrene 2.20E-01 Pyrene 4.60E-01 Selenium Silver 1.42E-01 Note: Representative Concentration [mg/kg] Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\NDU Page 1 of 1 Sheet name REPC-CON ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Acenaphthene NTOX 2.73E-07 NTOX 8.35E-07 Anthracene NTOX 2.75E-07 Arsenic 4.17E-07 9.83E-03 NPCP NTOX NPCP NPCP Barium NTOX 2.55E-03 NTOX NPCP NPCP NPCP Benzo(a)anthracene 1.79E-08 NTOX Benzo(a)pyrene 2.01E-07 NTOX Benzo(b)fluoranthene 2.53E-08 NTOX Benzo(g,h,i)perylene NTOX 7.50E-06 Benzo(k)fluoranthene 9.28E-10 NTOX Cadmium 2.82E-12 6.40E-04 NPCP NTOX NPCP NPCP Chromium (III) total Cr NTOX 8.46E-06 NTOX NTOX NPCP NPCP 1.85E-10 NTOX Dibenzo(a,h)anthracene 3.48E-08 NTOX Fluoranthene NTOX 1.42E-05 Fluorene NTOX 6.29E-07 Indeno(1,2,3-cd)pyrene 1.28E-08 NTOX Lead NTOX NTOX NTOX NTOX NPCP NPCP Mercury NTOX 3.21E-04 NTOX NPCP NPCP NPCP Naphthalene NTOX 1.61E-04 Phenanthrene NTOX 7.50E-06 Pyrene NTOX 1.70E-05 Selenium NTOX NTOX NPCP NPCP Silver NTOX 2.07E-05 NPCP NPCP 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 : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\NDU Page 1 of 1 Sheet name RISK NR ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR CONST Risk Acenaphthene NTOX NTOX Anthracene NTOX Arsenic 5.07E- Barium NTOX Benzo(a)anthracene 2.21E- Benzo(a)pyrene 2.48E- Benzo(b)fluoranthene 3.13E- Benzo(g,h,i)perylene NTOX Benzo(k)fluoranthene 1.14E- Cadmium 1.78E- Chromium (III) total Cr NTOX 2.33E- Dibenzo(a,h)anthracene 4.29E- Fluoranthene NTOX Fluorene NTOX Indeno(1,2,3-cd)pyrene 1.57E- Lead NTOX Mercury NTOX Naphthalene NTOX Phenanthrene NTOX Pyrene NTOX Selenium Silver NTOX Notes: NTOX: The toxicity parameter(s) required in the calculation of the valu NCOC: The chemical is not a COC for the pathway because it was selec was entered. NPCP: A physical-chemical parameter, required in the calculation of th Inhalation of V CHEMICALS OF CONCERN Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\NDU 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 1.33E-05 2.37E-01 1.96E-05 7.00E-02 7.10E-07 1.36E-02 8.69E-08 1.09E-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 1.33E-05 1.96E-05 7.10E-07 8.69E-08 Site Hazard Index 2.37E-01 7.00E-02 1.36E-02 1.09E-02 RATL-1/RATL-2 Required? YES NO YES 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 : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\NDUPage 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] [mg/m3] Acenaphthene 1.47E+02 NA NA NA 4.95E+02 NA NA NA 1.47E+02 NA NA NA 4.95E+02 NA NA NA Anthracene 7.20E+02 NA NA NA 2.44E+03 NA NA NA Arsenic 6.42E-01 NA NA NA 4.88E-01 NA NA NA Barium 3.95E+02 NA NA NA 1.34E+03 NA NA NA Benzo(a)anthracene 6.96E-01 NA NA NA 5.27E-01 NA NA NA Benzo(a)pyrene 6.96E-02 NA NA NA 5.27E-02 NA NA NA Benzo(b)fluoranthene 6.96E-01 NA NA NA 5.27E-01 NA NA NA Benzo(g,h,i)perylene 7.36E+01 NA NA NA 2.48E+02 NA NA NA Benzo(k)fluoranthene 6.97E+00 NA NA NA 5.27E+00 NA NA NA Cadmium 3.13E+00 NA NA NA 1.06E+01 NA NA NA Chromium (III) total Cr 8.47E+03 NA NA NA 2.87E+04 NA NA NA 6.93E+01 NA NA NA 5.25E+01 NA NA NA Dibenzo(a,h)anthracene 6.97E-02 NA NA NA 5.27E-02 NA NA NA Fluoranthene 9.74E+01 NA NA NA 3.29E+02 NA NA NA Fluorene 9.47E+01 NA NA NA 3.23E+02 NA NA NA Indeno(1,2,3-cd)pyrene 6.97E-01 NA NA NA 5.27E-01 NA NA NA Lead NA NA NA NA NA NA NA NA Mercury 1.69E+00 NA NA NA 5.75E+00 NA NA NA Naphthalene 7.10E+00 NA NA NA 3.60E+01 NA NA NA Phenanthrene 7.36E+01 NA NA NA 2.48E+02 NA NA NA Pyrene 7.32E+01 NA NA NA 2.47E+02 NA NA NA Selenium 2.82E+01 NA NA NA 9.58E+01 NA NA NA Silver 2.82E+01 NA NA NA 9.58E+01 NA NA NA 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 Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\NDU Page 1 of 1 Sheet name RATL R ---PAGE BREAK--- RATL-1 FOR NON-RESIDENTIAL RECEPTORS RATLs NOT REQUIRED SURFICIAL SOIL SUB-SURFACE SOIL GROUNDWAT CHEMICALS OF CONCERN [mg/kg] [mg/kg] [mg/L] Acenaphthene 3.91E+03 NA NA 3.91E+03 NA NA Anthracene 1.48E+04 NA NA Arsenic 1.01E+01 NA NA Barium 6.36E+03 NA NA Benzo(a)anthracene 1.55E+01 NA NA Benzo(a)pyrene 1.55E+00 NA NA Benzo(b)fluoranthene 1.54E+01 NA NA Benzo(g,h,i)perylene 1.96E+03 NA NA Benzo(k)fluoranthene 1.56E+02 NA NA Cadmium 4.72E+01 NA NA Chromium (III) total Cr 1.37E+05 NA NA 1.44E+03 NA NA Dibenzo(a,h)anthracene 1.56E+00 NA NA Fluoranthene 2.35E+03 NA NA Fluorene 1.70E+03 NA NA Indeno(1,2,3-cd)pyrene 1.57E+01 NA NA Lead NA NA NA Mercury 2.74E+01 NA NA Naphthalene 1.37E+01 NA NA Phenanthrene 1.96E+03 NA NA Pyrene 1.80E+03 NA NA Selenium NA NA NA Silver 4.57E+02 NA NA Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Indoor Inhalation of Vapor Emissions Indoor Inhalati Vapor Emissio Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\NDU Page 1 of 1 Sheet name RATL NR ---PAGE BREAK--- RATL-1 FOR CONSTRUCTION WORKERS RATLs NOT REQUIRED SURFICIAL SOIL [mg/kg] Acenaphthene 4.83E+03 4.83E+03 Anthracene 1.69E+04 Arsenic 3.20E+01 Barium 7.96E+03 Benzo(a)anthracene 1.26E+02 Benzo(a)pyrene 1.25E+01 Benzo(b)fluoranthene 1.24E+02 Benzo(g,h,i)perylene 2.41E+03 Benzo(k)fluoranthene 1.26E+03 Cadmium 5.89E+01 Chromium (III) total Cr 1.71E+05 1.14E+04 Dibenzo(a,h)anthracene 1.27E+01 Fluoranthene 2.81E+03 Fluorene 1.88E+03 Indeno(1,2,3-cd)pyrene 1.27E+02 Lead NA Mercury 3.42E+01 Naphthalene 1.28E+01 Phenanthrene 2.41E+03 Pyrene 2.17E+03 Selenium NA Silver 5.71E+02 CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion RISK EVALUATION MAIN MENU Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\NDU Page 1 of 1 Sheet name RATL CON ---PAGE BREAK--- SDU ---PAGE BREAK--- LIST OF SELECTED CHEMICALS Chemicals of Concern CAS Number Acenaphthene 83-32-9 208-96-8 Anthracene 120-12-7 Arsenic 7440-38-2 Barium 7440-39-3 Benzo(a)anthracene 56-55-3 Benzo(a)pyrene 50-32-8 Benzo(b)fluoranthene 205-99-2 Benzo(g,h,i)perylene 191-24-2 Benzo(k)fluoranthene 207-08-9 Cadmium 7440-43-9 Chromium (III) total Cr 7440-47-3 218-01-9 Dibenzo(a,h)anthracene 53-70-3 Fluoranthene 206-44-0 Fluorene 86-73-7 Indeno(1,2,3-cd)pyrene 193-39-5 Lead 7439-92-1 Mercury 7439-97-6 Naphthalene 91-20-3 Phenanthrene 85-01-8 Pyrene 129-00-0 Selenium 7782-49-2 Silver 7440-22-4 Notes: Chem Database Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\SDU Page 1 of 1 Sheet name COC ---PAGE BREAK--- RECEPTOR(S) AND ROUTE(S) OF EXPOSURE (Select by clicking the checkboxes) CHILD AGE-ADJUSTED Surficial Soil Ingestion of Soil, Outdoor Inhalation of Vapor Emissions and Particulates, and Dermal Contact with Soil Subsurface Soil Indoor Inhalation of Vapor Emissions Groundwater Indoor Inhalation of Vapor Emissions Soil-Vapor ( RE-2 only) Indoor Inhalation of Vapor Emissions Groundwater Protection Option 1. Option 2. Surface Water Protection If a surface water body is impacted or threatened, complete the following: If Ammonia is a potential COC for surface water, complete the following: Surface water supports warm water aquatic species? Surface water is used for drinking/water quality is appropriate for drinking water supplies? Surface water supports aquatic life? Surface water is used for recreational activities? Surface water supports cold water aquatic species? Groundwater with Low Probability of Future Use as Drinking Water: Groundwater concentrations protective of off-site receptors resulting from exposure via pathways other than direct ingestion. These pathways include but are not limited to volatilization to indoor air, irrigation water use with crop uptake and ingestion, and irrigation water use without crop uptake. SOURCE AND ROUTES OF EXPOSURES RECEPTOR Groundwater with Current Use or High Probability of Future Use as Drinking Water: The Maximum Contaminant Levels (MCLs) are used as the target concentrations at the POE. For chemicals without MCLs, risk-based ingestion standard for an age-adjusted adult is used. RESIDENT NON-RESIDENTIAL CONSTRUCTION WORKER Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\SDU Page 1 of 1 Sheet name ROE ---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 Acenaphthene 6.80E-02 8.90E-02 Anthracene 3.40E-01 Arsenic 4.94E+00 1.30E-02 1.30E-02 Barium 1.74E+02 7.03E-01 7.03E-01 Benzo(a)anthracene 1.10E+00 Benzo(a)pyrene 1.20E+00 Benzo(b)fluoranthene 1.50E+00 Benzo(g,h,i)perylene 9.30E-01 Benzo(k)fluoranthene 6.90E-01 Cadmium 2.69E-01 4.60E-04 4.60E-04 Chromium (III) total Cr 1.73E+01 5.24E-02 5.24E-02 1.30E+00 Dibenzo(a,h)anthracene 2.70E-01 Fluoranthene 2.70E-01 Fluorene 9.30E-02 Indeno(1,2,3-cd)pyrene 8.30E-01 Lead 6.45E+01 4.51E-02 4.51E-02 Mercury 5.06E-02 1.40E-04 1.40E-04 Naphthalene 6.10E-02 Phenanthrene 1.50E+00 Pyrene 2.40E+00 Selenium 1.35E+00 7.50E-03 7.50E-03 Silver 1.20E-03 1.20E-03 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] Representative Concentration [mg/L] Representative Concentration [mg/kg] USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 PRINT RISK EVALUATION MAIN MENU Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\SDU 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 Acenaphthene 6.80E-02 8.90E-02 Anthracene 3.40E-01 Arsenic 4.94E+00 9.09E+00 1.30E-02 Barium 1.74E+02 1.94E+02 7.03E-01 Benzo(a)anthracene 1.10E+00 Benzo(a)pyrene 1.20E+00 Benzo(b)fluoranthene 1.50E+00 Benzo(g,h,i)perylene 9.30E-01 Benzo(k)fluoranthene 6.90E-01 Cadmium 2.69E-01 9.83E-01 4.60E-04 Chromium (III) total Cr 1.73E+01 1.82E+01 5.24E-02 1.30E+00 Dibenzo(a,h)anthracene 2.70E-01 Fluoranthene 2.70E-01 Fluorene 9.30E-02 Indeno(1,2,3-cd)pyrene 8.30E-01 Lead 6.45E+01 4.51E+01 4.51E-02 Mercury 5.06E-02 1.73E-02 1.40E-04 Naphthalene 6.10E-02 Phenanthrene 1.50E+00 Pyrene 2.40E+00 Selenium 1.35E+00 1.65E+00 7.50E-03 Silver 1.20E-03 Representative Concentration [mg/kg] Representative Concentration [mg/L] Representative Concentration [mg/kg] USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\SDU 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 Acenaphthene 6.80E-02 8.90E-02 Anthracene 3.40E-01 Arsenic 4.94E+00 Barium 1.74E+02 Benzo(a)anthracene 1.10E+00 Benzo(a)pyrene 1.20E+00 Benzo(b)fluoranthene 1.50E+00 Benzo(g,h,i)perylene 9.30E-01 Benzo(k)fluoranthene 6.90E-01 Cadmium 2.69E-01 Chromium (III) total Cr 1.73E+01 1.30E+00 Dibenzo(a,h)anthracene 2.70E-01 Fluoranthene 2.70E-01 Fluorene 9.30E-02 Indeno(1,2,3-cd)pyrene 8.30E-01 Lead 6.45E+01 Mercury 5.06E-02 Naphthalene 6.10E-02 Phenanthrene 1.50E+00 Pyrene 2.40E+00 Selenium 1.35E+00 Silver Note: Representative Concentration [mg/kg] Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\SDU 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 Acenaphthene NTOX 2.89E-05 NTOX 8.58E-06 NTOX 3.78E-05 NTOX 1.12E-05 Anthracene NTOX 2.95E-05 NTOX 8.70E-06 Arsenic 8.55E-06 2.22E-01 NPCP NPCP 1.26E-05 6.56E-02 NPCP NPCP Barium NTOX 2.75E-02 NPCP NPCP NTOX 8.11E-03 NPCP NPCP Benzo(a)anthracene 1.75E-06 NTOX 2.61E-06 NTOX Benzo(a)pyrene 1.91E-05 NTOX 2.85E-05 NTOX Benzo(b)fluoranthene 2.39E-06 NTOX 3.56E-06 NTOX Benzo(g,h,i)perylene NTOX 7.89E-04 NTOX 2.35E-04 Benzo(k)fluoranthene 1.10E-07 NTOX 1.64E-07 NTOX Cadmium 2.44E-12 5.37E-03 NPCP NPCP NTOX 1.58E-03 NPCP NPCP Chromium (III) total Cr NTOX 1.28E-04 NPCP NPCP NTOX 3.76E-05 NPCP NPCP 2.08E-08 NTOX 3.09E-08 NTOX Dibenzo(a,h)anthracene 4.31E-06 NTOX 6.40E-06 NTOX Fluoranthene NTOX 1.73E-04 NTOX 5.14E-05 Fluorene NTOX 6.14E-05 NTOX 1.80E-05 Indeno(1,2,3-cd)pyrene 1.32E-06 NTOX 1.97E-06 NTOX Lead NTOX NTOX NPCP NPCP NTOX NTOX NPCP NPCP Mercury NTOX 1.87E-03 NPCP NPCP NTOX 5.50E-04 NPCP NPCP Naphthalene NTOX 5.37E-04 NTOX 1.06E-04 Phenanthrene NTOX 1.27E-03 NTOX 3.79E-04 Pyrene NTOX 2.05E-03 NTOX 6.08E-04 Selenium NTOX 2.99E-03 NPCP NPCP NTOX 8.81E-04 NPCP NPCP Silver NPCP NPCP NPCP NPCP 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 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 RISK EVALUATION MAIN MENU Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\SDU 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 Acenaphthene NTOX 1.16E-06 NTOX 1.52E-06 Anthracene NTOX 1.54E-06 Arsenic 5.44E-07 1.28E-02 NPCP NTOX NPCP NPCP Barium NTOX 1.83E-03 NTOX NPCP NPCP NPCP Benzo(a)anthracene 7.88E-08 NTOX Benzo(a)pyrene 8.61E-07 NTOX Benzo(b)fluoranthene 1.08E-07 NTOX Benzo(g,h,i)perylene NTOX 3.17E-05 Benzo(k)fluoranthene 4.93E-09 NTOX Cadmium 1.67E-12 3.80E-04 NPCP NTOX NPCP NPCP Chromium (III) total Cr NTOX 8.41E-06 NTOX NTOX NPCP NPCP 1.00E-09 NTOX Dibenzo(a,h)anthracene 1.92E-07 NTOX Fluoranthene NTOX 7.67E-06 Fluorene NTOX 3.65E-06 Indeno(1,2,3-cd)pyrene 5.89E-08 NTOX Lead NTOX NTOX NTOX NTOX NPCP NPCP Mercury NTOX 1.23E-04 NTOX NPCP NPCP NPCP Naphthalene NTOX 2.97E-04 Phenanthrene NTOX 5.11E-05 Pyrene NTOX 8.89E-05 Selenium NTOX 1.97E-04 NTOX NTOX NPCP NPCP Silver NPCP NPCP 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 : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\SDU Page 1 of 1 Sheet name RISK NR ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR CONST Risk Acenaphthene NTOX NTOX Anthracene NTOX Arsenic 6.61E- Barium NTOX Benzo(a)anthracene 9.73E- Benzo(a)pyrene 1.06E- Benzo(b)fluoranthene 1.34E- Benzo(g,h,i)perylene NTOX Benzo(k)fluoranthene 6.07E- Cadmium 1.06E- Chromium (III) total Cr NTOX 1.26E- Dibenzo(a,h)anthracene 2.36E- Fluoranthene NTOX Fluorene NTOX Indeno(1,2,3-cd)pyrene 7.25E- Lead NTOX Mercury NTOX Naphthalene NTOX Phenanthrene NTOX Pyrene NTOX Selenium NTOX Silver Notes: NTOX: The toxicity parameter(s) required in the calculation of the valu CHEMICALS OF CONCERN Inhalation of V NCOC: The chemical is not a COC for the pathway because it was selec was entered. NPCP: A physical-chemical parameter, required in the calculation of th Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\SDU 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 3.76E-05 2.65E-01 5.58E-05 7.82E-02 1.85E-06 1.58E-02 2.27E-07 1.28E-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 3.76E-05 5.58E-05 1.85E-06 2.27E-07 Site Hazard Index 2.65E-01 7.82E-02 1.58E-02 1.28E-02 RATL-1/RATL-2 Required? YES NO YES 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 : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\SDUPage 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] [mg/m3] Acenaphthene 1.57E+02 NA NA NA 5.28E+02 NA NA NA 1.57E+02 NA NA NA 5.28E+02 NA NA NA Anthracene 7.68E+02 NA NA NA 2.60E+03 NA NA NA Arsenic 6.42E-01 NA NA NA 4.88E-01 NA NA NA Barium 4.21E+02 NA NA NA 1.43E+03 NA NA NA Benzo(a)anthracene 6.96E-01 NA NA NA 5.27E-01 NA NA NA Benzo(a)pyrene 6.96E-02 NA NA NA 5.27E-02 NA NA NA Benzo(b)fluoranthene 6.96E-01 NA NA NA 5.27E-01 NA NA NA Benzo(g,h,i)perylene 7.85E+01 NA NA NA 2.64E+02 NA NA NA Benzo(k)fluoranthene 6.97E+00 NA NA NA 5.27E+00 NA NA NA Cadmium 3.34E+00 NA NA NA 1.13E+01 NA NA NA Chromium (III) total Cr 9.04E+03 NA NA NA 3.06E+04 NA NA NA 6.93E+01 NA NA NA 5.25E+01 NA NA NA Dibenzo(a,h)anthracene 6.97E-02 NA NA NA 5.27E-02 NA NA NA Fluoranthene 1.04E+02 NA NA NA 3.50E+02 NA NA NA Fluorene 1.01E+02 NA NA NA 3.44E+02 NA NA NA Indeno(1,2,3-cd)pyrene 6.97E-01 NA NA NA 5.27E-01 NA NA NA Lead NA NA NA NA NA NA NA NA Mercury 1.81E+00 NA NA NA 6.13E+00 NA NA NA Naphthalene 7.57E+00 NA NA NA 3.83E+01 NA NA NA Phenanthrene 7.85E+01 NA NA NA 2.64E+02 NA NA NA Pyrene 7.81E+01 NA NA NA 2.63E+02 NA NA NA Selenium 3.01E+01 NA NA NA 1.02E+02 NA NA NA Silver NA NA NA NA NA NA NA NA 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 PRINT RISK EVALUATION MAIN MENU Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\SDU 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] [mg/m3] Acenaphthene 3.91E+03 NA NA NA 3.91E+03 NA NA NA Anthracene 1.48E+04 NA NA NA Arsenic 1.01E+01 NA NA NA Barium 6.36E+03 NA NA NA Benzo(a)anthracene 1.55E+01 NA NA NA Benzo(a)pyrene 1.55E+00 NA NA NA Benzo(b)fluoranthene 1.54E+01 NA NA NA Benzo(g,h,i)perylene 1.96E+03 NA NA NA Benzo(k)fluoranthene 1.56E+02 NA NA NA Cadmium 4.72E+01 NA NA NA Chromium (III) total Cr 1.37E+05 NA NA NA 1.44E+03 NA NA NA Dibenzo(a,h)anthracene 1.56E+00 NA NA NA Fluoranthene 2.35E+03 NA NA NA Fluorene 1.70E+03 NA NA NA Indeno(1,2,3-cd)pyrene 1.57E+01 NA NA NA Lead NA NA NA NA Mercury 2.74E+01 NA NA NA Naphthalene 1.37E+01 NA NA NA Phenanthrene 1.96E+03 NA NA NA Pyrene 1.80E+03 NA NA NA Selenium 4.57E+02 NA NA NA Silver NA NA NA NA 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 : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\SDU Page 1 of 1 Sheet name RATL NR ---PAGE BREAK--- RATL-1 FOR CONSTRUCTION WORKERS RATLs NOT REQUIRED SURFICIAL SOIL [mg/kg] Acenaphthene 4.83E+03 4.83E+03 Anthracene 1.69E+04 Arsenic 3.20E+01 Barium 7.96E+03 Benzo(a)anthracene 1.26E+02 Benzo(a)pyrene 1.25E+01 Benzo(b)fluoranthene 1.24E+02 Benzo(g,h,i)perylene 2.41E+03 Benzo(k)fluoranthene 1.26E+03 Cadmium 5.89E+01 Chromium (III) total Cr 1.71E+05 1.14E+04 Dibenzo(a,h)anthracene 1.27E+01 Fluoranthene 2.81E+03 Fluorene 1.88E+03 Indeno(1,2,3-cd)pyrene 1.27E+02 Lead NA Mercury 3.42E+01 Naphthalene 1.28E+01 Phenanthrene 2.41E+03 Pyrene 2.17E+03 Selenium 5.71E+02 Silver NA CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion RISK EVALUATION MAIN MENU Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\SDU Page 1 of 1 Sheet name RATL CON ---PAGE BREAK--- RDU ---PAGE BREAK--- LIST OF SELECTED CHEMICALS Chemicals of Concern CAS Number Acenaphthene 83-32-9 208-96-8 Anthracene 120-12-7 Arsenic 7440-38-2 Barium 7440-39-3 Benzo(a)anthracene 56-55-3 Benzo(a)pyrene 50-32-8 Benzo(b)fluoranthene 205-99-2 Benzo(g,h,i)perylene 191-24-2 Benzo(k)fluoranthene 207-08-9 Cadmium 7440-43-9 Chromium (III) total Cr 7440-47-3 218-01-9 Dibenzo(a,h)anthracene 53-70-3 Fluoranthene 206-44-0 Fluorene 86-73-7 Indeno(1,2,3-cd)pyrene 193-39-5 Lead 7439-92-1 Mercury 7439-97-6 Naphthalene 91-20-3 Phenanthrene 85-01-8 Pyrene 129-00-0 Selenium 7782-49-2 Silver 7440-22-4 Notes: Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\RDU\Scenario 1; 0-1' as surface soil Page 1 of 1 Sheet name COC ---PAGE BREAK--- RECEPTOR(S) AND ROUTE(S) OF EXPOSURE (Select by clicking the checkboxes) CHILD AGE-ADJUSTED Surficial Soil Ingestion of Soil, Outdoor Inhalation of Vapor Emissions and Particulates, and Dermal Contact with Soil Subsurface Soil Indoor Inhalation of Vapor Emissions Groundwater Indoor Inhalation of Vapor Emissions Soil-Vapor ( RE-2 only) Indoor Inhalation of Vapor Emissions Groundwater Protection Option 1. Option 2. Surface Water Protection If a surface water body is impacted or threatened, complete the following: If Ammonia is a potential COC for surface water, complete the following: SOURCE AND ROUTES OF EXPOSURES RECEPTOR Groundwater with Current Use or High Probability of Future Use as Drinking Water: The Maximum Contaminant Levels (MCLs) are used as the target concentrations at the POE. For chemicals without MCLs, risk-based ingestion standard for an age-adjusted adult is used. RESIDENT NON-RESIDENTIAL CONSTRUCTION WORKER Surface water supports warm water aquatic species? Surface water is used for drinking/water quality is appropriate for drinking water supplies? Surface water supports aquatic life? Surface water is used for recreational activities? Surface water supports cold water aquatic species? Groundwater with Low Probability of Future Use as Drinking Water: Groundwater concentrations protective of off-site receptors resulting from exposure via pathways other than direct ingestion. These pathways include but are not limited to volatilization to indoor air, irrigation water use with crop uptake and ingestion, and irrigation water use without crop uptake. Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\RDU\Scenario 1; 0-1' as surface soil Page 1 of 1 Sheet name ROE ---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 Acenaphthene 2.60E-01 9.00E-03 Anthracene 1.80E-01 1.60E-02 Arsenic 3.66E+00 9.09E+00 1.30E-02 1.30E-02 Barium 1.17E+02 1.94E+02 7.03E-01 7.03E-01 Benzo(a)anthracene 5.20E-01 4.50E-02 Benzo(a)pyrene 7.30E-01 5.60E-02 Benzo(b)fluoranthene 1.00E+00 7.60E-02 Benzo(g,h,i)perylene 8.20E-01 5.20E-02 Benzo(k)fluoranthene 3.90E-01 3.00E-02 Cadmium 3.23E-01 9.83E-01 4.60E-04 4.60E-04 Chromium (III) total Cr 1.97E+01 1.82E+01 5.24E-02 5.24E-02 6.50E-01 5.70E-02 Dibenzo(a,h)anthracene 2.20E-01 1.30E-02 Fluoranthene 4.60E-01 9.90E-02 Fluorene 4.00E-03 Indeno(1,2,3-cd)pyrene 6.90E-01 4.30E-02 Lead 4.69E+01 4.90E+01 4.51E-02 4.51E-02 Mercury 7.09E-02 1.65E-01 1.40E-04 1.40E-04 Naphthalene 3.50E-02 8.00E-03 Phenanthrene 1.60E-01 4.60E-02 Pyrene 6.40E-01 9.20E-02 Selenium 1.29E+00 1.65E+00 7.50E-03 7.50E-03 Silver 1.20E-03 1.20E-03 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] Representative Concentration [mg/L] Representative Concentration [mg/kg] USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 PRINT RISK EVALUATION MAIN MENU Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\RDU\Scenario 1; 0-1' as surface soil 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 Acenaphthene 2.60E-01 9.00E-03 Anthracene 1.80E-01 1.60E-02 Arsenic 3.66E+00 9.09E+00 1.30E-02 Barium 1.17E+02 1.94E+02 7.03E-01 Benzo(a)anthracene 5.20E-01 4.50E-02 Benzo(a)pyrene 7.30E-01 5.60E-02 Benzo(b)fluoranthene 1.00E+00 7.60E-02 Benzo(g,h,i)perylene 8.20E-01 5.20E-02 Benzo(k)fluoranthene 3.90E-01 3.00E-02 Cadmium 3.23E-01 9.83E-01 4.60E-04 Chromium (III) total Cr 1.97E+01 1.82E+01 5.24E-02 6.50E-01 5.70E-02 Dibenzo(a,h)anthracene 2.20E-01 1.30E-02 Fluoranthene 4.60E-01 9.90E-02 Fluorene 4.00E-03 Indeno(1,2,3-cd)pyrene 6.90E-01 4.30E-02 Lead 4.69E+01 4.90E+01 4.51E-02 Mercury 7.09E-02 1.65E-01 1.40E-04 Naphthalene 3.50E-02 8.00E-03 Phenanthrene 1.60E-01 4.60E-02 Pyrene 6.40E-01 9.20E-02 Selenium 1.29E+00 1.65E+00 7.50E-03 Silver 1.20E-03 Representative Concentration [mg/kg] Representative Concentration [mg/L] Representative Concentration [mg/kg] USE OF SOIL-VAPOR DATA IS NOT ALLOWED UNDER RE-1 Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\RDU\Scenario 1; 0-1' as surface soil Page 1 of 1 Sheet name REPC-NRES ---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 Acenaphthene NTOX 1.10E-04 NTOX NTOX NTOX 3.28E-05 NTOX NTOX Anthracene NTOX 1.56E-05 NTOX 3.91E-07 NTOX 4.61E-06 NTOX 1.32E-07 Arsenic 6.34E-06 1.64E-01 NPCP NTOX NPCP NPCP 9.37E-06 4.86E-02 NPCP NTOX NPCP NPCP Barium NTOX 1.85E-02 NTOX NPCP NPCP NPCP NTOX 5.45E-03 NTOX NPCP NPCP NPCP Benzo(a)anthracene 8.30E-07 NTOX 1.50E-11 NTOX 1.23E-06 NTOX 2.54E-11 NTOX Benzo(a)pyrene 1.16E-05 NTOX 9.25E-11 NTOX 1.73E-05 NTOX 1.56E-10 NTOX Benzo(b)fluoranthene 1.60E-06 NTOX 1.99E-10 NTOX 2.37E-06 NTOX 3.37E-10 NTOX Benzo(g,h,i)perylene NTOX 6.96E-04 NTOX NTOX NTOX 2.07E-04 NTOX NTOX Benzo(k)fluoranthene 6.22E-08 NTOX 3.36E-13 NTOX 9.25E-08 NTOX 5.69E-13 NTOX Cadmium 2.93E-12 6.45E-03 NPCP NTOX NPCP NPCP NTOX 1.90E-03 NPCP NTOX NPCP NPCP Chromium (III) total Cr NTOX 1.45E-04 NTOX NTOX NPCP NPCP NTOX 4.29E-05 NTOX NTOX NPCP NPCP 1.04E-08 NTOX 2.83E-11 NTOX 1.55E-08 NTOX 4.79E-11 NTOX Dibenzo(a,h)anthracene 3.51E-06 NTOX 2.05E-13 NTOX 5.22E-06 NTOX 3.47E-13 NTOX Fluoranthene NTOX 2.95E-04 NTOX 1.72E-06 NTOX 8.75E-05 NTOX 5.80E-07 Fluorene NTOX 1.83E-06 NTOX 6.18E-07 Indeno(1,2,3-cd)pyrene 1.10E-06 NTOX 2.70E-12 NTOX 1.64E-06 NTOX 4.56E-12 NTOX Lead NTOX NTOX NTOX NTOX NPCP NPCP NTOX NTOX NTOX NTOX NPCP NPCP Mercury NTOX 2.61E-03 NTOX NPCP NPCP NPCP NTOX 7.71E-04 NTOX NPCP NPCP NPCP Naphthalene NTOX 3.08E-04 NTOX 6.99E-03 NTOX 6.08E-05 NTOX 2.32E-03 Phenanthrene NTOX 1.36E-04 NTOX NTOX NTOX 4.04E-05 NTOX NTOX Pyrene NTOX 5.46E-04 NTOX 1.10E-06 NTOX 1.62E-04 NTOX 3.72E-07 Selenium NTOX 2.85E-03 NTOX NTOX NPCP NPCP NTOX 8.42E-04 NTOX NTOX NPCP NPCP Silver NPCP NPCP NPCP NPCP 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 : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\RDU\Scenario 1; 0-1' as surface soil Page 1 of 1 Sheet name RISK R ---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 Acenaphthene 2.60E-01 Anthracene 1.80E-01 Arsenic 3.66E+00 Barium 1.17E+02 Benzo(a)anthracene 5.20E-01 Benzo(a)pyrene 7.30E-01 Benzo(b)fluoranthene 1.00E+00 Benzo(g,h,i)perylene 8.20E-01 Benzo(k)fluoranthene 3.90E-01 Cadmium 3.23E-01 Chromium (III) total Cr 1.97E+01 6.50E-01 Dibenzo(a,h)anthracene 2.20E-01 Fluoranthene 4.60E-01 Fluorene Indeno(1,2,3-cd)pyrene 1.80E-01 Lead 6.90E-01 Mercury 7.09E-02 Naphthalene 3.50E-02 Phenanthrene 1.60E-01 Pyrene 6.40E-01 Selenium 1.29E+00 Silver Note: Representative Concentration [mg/kg] Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\RDU\Scenario 1; 0-1' as surface soil Page 1 of 1 Sheet name REPC-CON ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR NON-RESIDENTIAL RECEPTORS SURFICIAL SOIL CHEMICALS OF CONCERN Risk HQ Risk HQ Risk HQ Risk HQ Acenaphthene NTOX 4.43E-06 NTOX NTOX Anthracene NTOX 8.13E-07 NTOX 8.92E-09 Arsenic 4.03E-07 9.49E-03 NPCP NTOX NPCP NPCP Barium NTOX 1.23E-03 NTOX NPCP NPCP NPCP Benzo(a)anthracene 3.73E-08 NTOX 3.70E-13 NTOX Benzo(a)pyrene 5.24E-07 NTOX 2.27E-12 NTOX Benzo(b)fluoranthene 7.23E-08 NTOX 5.03E-12 NTOX Benzo(g,h,i)perylene NTOX 2.80E-05 NTOX NTOX Benzo(k)fluoranthene 2.78E-09 NTOX 8.27E-15 NTOX Cadmium 2.01E-12 4.57E-04 NPCP NTOX NPCP NPCP Chromium (III) total Cr NTOX 9.57E-06 NTOX NTOX NPCP NPCP 5.00E-10 NTOX 7.17E-13 NTOX Dibenzo(a,h)anthracene 1.56E-07 NTOX 5.01E-15 NTOX Fluoranthene NTOX 1.31E-05 NTOX 3.91E-08 Fluorene NTOX 4.16E-08 Indeno(1,2,3-cd)pyrene 4.90E-08 NTOX 6.69E-14 NTOX Lead NTOX NTOX NTOX NTOX NPCP NPCP Mercury NTOX 1.72E-04 NTOX NPCP NPCP NPCP Naphthalene NTOX 1.71E-04 NTOX 1.58E-04 Phenanthrene NTOX 5.46E-06 NTOX NTOX Pyrene NTOX 2.37E-05 NTOX 2.51E-08 Selenium NTOX 1.88E-04 NTOX NTOX NPCP NPCP Silver NPCP NPCP 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 : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\RDU\Scenario 1; 0-1' as surface soil Page 1 of 1 Sheet name RISK NR ---PAGE BREAK--- RE-1 RISK/HAZARD QUOTIENT FOR CONST Risk Acenaphthene NTOX Anthracene NTOX Arsenic 4.90E- Barium NTOX Benzo(a)anthracene 4.60E- Benzo(a)pyrene 6.47E- Benzo(b)fluoranthene 8.95E- Benzo(g,h,i)perylene NTOX Benzo(k)fluoranthene 3.43E- Cadmium 1.27E- Chromium (III) total Cr NTOX 6.31E- Dibenzo(a,h)anthracene 1.93E- Fluoranthene NTOX Fluorene Indeno(1,2,3-cd)pyrene 1.57E- Lead NTOX Mercury NTOX Naphthalene NTOX Phenanthrene NTOX Pyrene NTOX Selenium NTOX Silver Notes: NTOX: The toxicity parameter(s) required in the calculation of the valu NCOC: The chemical is not a COC for the pathway because it was selec was entered. NPCP: A physical-chemical parameter, required in the calculation of th Inhalation of V CHEMICALS OF CONCERN Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\RDU\Scenario 1; 0-1' as surface soil 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 2.51E-05 1.97E-01 3.72E-05 5.82E-02 1.24E-06 1.18E-02 1.48E-07 9.51E-03 Subsurface Soil: Indoor Inhalation of Vapor Emissions 3.39E-10 7.00E-03 5.72E-10 2.33E-03 8.47E-12 1.58E-04 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 2.51E-05 3.72E-05 1.24E-06 1.48E-07 Site Hazard Index 2.04E-01 6.05E-02 1.19E-02 9.51E-03 RATL-1/RATL-2 Required? YES NO YES 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 : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\RDU\Scenario 1; 0-1' as surface soil 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] [mg/m3] Acenaphthene NA NA NA NA NA NA NA NA 1.31E+02 NA NA NA 4.40E+02 NA NA NA Anthracene 6.40E+02 2.27E+03 NA NA 2.17E+03 6.72E+03 NA NA Arsenic 3.61E-01 NA NA NA 2.60E-01 NA NA NA Barium 3.51E+02 NA NA NA 1.19E+03 NA NA NA Benzo(a)anthracene 3.92E-01 1.87E+03 NA NA 2.81E-01 1.18E+03 NA NA Benzo(a)pyrene 3.92E-02 3.78E+02 NA NA 2.81E-02 2.39E+02 NA NA Benzo(b)fluoranthene 3.92E-01 2.38E+02 NA NA 2.81E-01 1.50E+02 NA NA Benzo(g,h,i)perylene 6.54E+01 NA NA NA 2.20E+02 NA NA NA Benzo(k)fluoranthene 3.92E+00 5.57E+04 NA NA 2.81E+00 3.52E+04 NA NA Cadmium 2.78E+00 NA NA NA 9.45E+00 NA NA NA Chromium (III) total Cr 7.53E+03 NA NA NA 2.55E+04 NA NA NA 3.90E+01 1.26E+03 NA NA 2.80E+01 7.94E+02 NA NA Dibenzo(a,h)anthracene 3.92E-02 3.96E+04 NA NA 2.81E-02 2.50E+04 NA NA Fluoranthene 8.66E+01 3.21E+03 NA NA 2.92E+02 9.49E+03 NA NA Fluorene NA 1.22E+02 NA NA NA 3.60E+02 NA NA Indeno(1,2,3-cd)pyrene 3.92E-01 9.96E+03 NA NA 2.81E-01 6.28E+03 NA NA Lead NA NA NA NA NA NA NA NA Mercury 1.51E+00 NA NA NA 5.11E+00 NA NA NA Naphthalene 6.31E+00 6.36E-02 NA NA 3.20E+01 1.91E-01 NA NA Phenanthrene 6.54E+01 NA NA NA 2.20E+02 NA NA NA Pyrene 6.51E+01 4.64E+03 NA NA 2.19E+02 1.37E+04 NA NA Selenium 2.51E+01 NA NA NA 8.51E+01 NA NA NA Silver NA NA NA NA NA NA NA NA 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 Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\RDU\Scenario 1; 0-1' as surface soil 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] [mg/m3] Acenaphthene NA NA NA NA 3.26E+03 NA NA NA Anthracene 1.23E+04 9.96E+04 NA NA Arsenic 5.68E+00 NA NA NA Barium 5.30E+03 NA NA NA Benzo(a)anthracene 8.72E+00 7.60E+04 NA NA Benzo(a)pyrene 8.71E-01 1.54E+04 NA NA Benzo(b)fluoranthene 8.65E+00 9.44E+03 NA NA Benzo(g,h,i)perylene 1.63E+03 NA NA NA Benzo(k)fluoranthene 8.75E+01 2.27E+06 NA NA Cadmium 3.93E+01 NA NA NA Chromium (III) total Cr 1.14E+05 NA NA NA 8.12E+02 4.97E+04 NA NA Dibenzo(a,h)anthracene 8.79E-01 1.62E+06 NA NA Fluoranthene 1.96E+03 1.41E+05 NA NA Fluorene NA 5.35E+03 NA NA Indeno(1,2,3-cd)pyrene 8.81E+00 4.02E+05 NA NA Lead NA NA NA NA Mercury 2.29E+01 NA NA NA Naphthalene 1.14E+01 2.82E+00 NA NA Phenanthrene 1.63E+03 NA NA NA Pyrene 1.50E+03 2.04E+05 NA NA Selenium 3.81E+02 NA NA NA Silver NA NA NA NA 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 : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\RDU\Scenario 1; 0-1' as surface soil Page 1 of 1 Sheet name RATL NR ---PAGE BREAK--- RATL-1 FOR CONSTRUCTION WORKERS RATLs NOT REQUIRED SURFICIAL SOIL [mg/kg] Acenaphthene NA 5.57E+03 Anthracene 1.95E+04 Arsenic 3.69E+01 Barium 9.19E+03 Benzo(a)anthracene 1.26E+02 Benzo(a)pyrene 1.25E+01 Benzo(b)fluoranthene 1.24E+02 Benzo(g,h,i)perylene 2.78E+03 Benzo(k)fluoranthene 1.26E+03 Cadmium 6.80E+01 Chromium (III) total Cr 1.98E+05 1.14E+04 Dibenzo(a,h)anthracene 1.27E+01 Fluoranthene 3.24E+03 Fluorene NA Indeno(1,2,3-cd)pyrene 1.27E+02 Lead NA Mercury 3.95E+01 Naphthalene 1.48E+01 Phenanthrene 2.78E+03 Pyrene 2.50E+03 Selenium 6.59E+02 Silver NA CHEMICALS OF CONCERN Inhalation of Vapors and Particulates, Dermal Contact, and Accidental Ingestion Path : N:\BROWNFIELD\Projects\Moscow\Dumas Spur\IDEQ REM\Includes Residential\RDU\Scenario 1; 0-1' as surface soil Page 1 of 1 Sheet name RATL CON