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Home My WebLink About604 E Gilman Ave_PWD2198_2026 Portion of the NW 1/4 and the SW 1/4 of SEC. 1, TWP. 31N., RGE. 5 E., W.M. GRAAFSTRA PROPERTY REMEDIATION PLAN SET ARLINGTON, SNOHOMISH COUNTY, WASHINGTON GENERAL LEGEND VERTICAL DATUM UTILITY CONTACTS PROJECT BENCHMARKS BASIS OF BEARINGS SITE REFERENCES LEGAL DESCRIPTION SITE INFORMATION CIVIL ENGINEERING LANDSCAPE ARCHITECTURE PLANNING SURVEYING PROPERTY OWNER VICINITY MAP N G I GRADING ACTIVITY S E SHEET INDEX D ENGINEER/SURVEYOR/PLANNER/ EXCAVATION NOTES LANDSCAPE ARCHITECTURE 12100 NE 195th St, Suite 300 Bothell, Washington 98011 425.885.7877 GEOTECHNICAL ENGINEER CONTAMINATED SOIL HANDLING COVER SHEET GRADING AND EROSION CONTROL NOTES GRAAFSTRA PROPERTY LANDED GENTRY HOMES AND COMMUNITIES UTILITY CONFLICT NOTE: CAUTION: C1.01 1 2 19035 Portion of the NW 1/4 and the SW 1/4 of SEC. 1, TWP. 31N., RGE. 5 E., W.M. EP-5 EB-9 EB-11 CIVIL ENGINEERING LANDSCAPE ARCHITECTURE PLANNING SURVEYING N G I S E D LEGEND 12100 NE 195th St, Suite 300 Bothell, Washington 98011 425.885.7877 NOTE: REMEDIATION PLAN GRAAFSTRA PROPERTY LANDED GENTRY HOMES AND COMMUNITIES C1.02 ELEVATION SECTION SILT FENCE DETAIL 2 2 19035 associated earth sciences incorporated Conceptual Remedial Action Work Plan GILMAN WALK AT COUNTRY CHARM PROPERTY Arlington, Washington Prepared For: CORNER 9 PROPERTIES, LLC Project No. 20190211V006 April 28, 2020 Associated Earth Sciences, Inc. 911 5th Avenue Kirkland, WA 98033 P (425) 827 7701 April 28, 2020 Project No. 20190211V006 Corner 9 Properties, LLC 504 East Fairhaven Avenue Burlington, Washington 98233 Attention: Ms. Anna Nelson, AICP Land Development Project Manager Subject: Conceptual Remedial Action Work Plan Gilman Walk at Country Charm 604 East Gilman Avenue Arlington, Washington Dear Ms. Nelson: Associated Earth Sciences, Inc. (AESI) is pleased to present the enclosed copy of the above-referenced plan. This plan summarizes the data collected through assessments and describes the plan for completing the selected remedial action to achieve regulatory closure at the Gilman Walk at Country Charm property (Property) located at 604 East Gilman Avenue in Arlington, Washington. The scope of services was completed in general accordance with the proposal and scope of work provided by AESI on April 17, 2020, and authorized by Anna Nelson of Corner 9 Properties, LLC on April 20, 2020. We have enjoyed working with you on this project and are confident that this conceptual plan will aid in the regulatory closure efforts for the Gilman Walk at Country Charm property. If you should have any questions regarding this report, or if we can be of additional help to you, please do not hesitate to call. Sincerely, ASSOCIATED EARTH SCIENCES, INC. Kirkland, Washington ______________________________ Timothy S. Brown, L.Hg. Associate Hydrogeologist TSB/ms - 20190211V006-4 Kirkland | Tacoma | Mount Vernon 425-827-7701 | www.aesgeo.com CONCEPTUAL REMEDIAL ACTION WORK PLAN GILMAN WALK AT COUNTRY CHARM PROPERTY Arlington, Washington Prepared for: Corner 9 Properties, LLC 504 East Fairhaven Avenue Burlington, Washington 98233 Prepared by: Associated Earth Sciences, Inc. 911 5th Avenue Kirkland, Washington 98033 425-827-7701 April 28, 2020 Project No. 20190211V006 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan TABLE OF CONTENTS Page 1.0 INTRODUCTION ........................................................................................................................ 1 1.1 Purpose ............................................................................................................................ 1 1.2 Project Background .......................................................................................................... 1 2.0 SITE CHARACTERIZATION ......................................................................................................... 2 2.1 Soil Sampling Methods ..................................................................................................... 3 2.2 Groundwater Sample Collection ...................................................................................... 4 2.3 Analytical Results ............................................................................................................. 4 2.3.1 Soil ......................................................................................................................... 5 2.3.2 Groundwater ......................................................................................................... 5 3.0 CONCEPTUAL SITE MODEL ....................................................................................................... 6 4.0 CLEANUP STANDARDS.............................................................................................................. 8 4.1 Applicable or Relevant and Appropriate Requirements .................................................. 8 4.2 Points of Compliance ....................................................................................................... 8 4.3 Cleanup Levels .................................................................................................................. 9 5.0 MODEL REMEDY SELECTION .................................................................................................... 9 6.0 SELECTED REMEDIAL ACTON ................................................................................................. 10 7.0 LIMITATIONS .......................................................................................................................... 11 8.0 CLOSURE ................................................................................................................................. 12 9.0 REFERENCES ........................................................................................................................... 13 LIST OF FIGURES Figure 1. Vicinity Map Figure 2. Site Plan Figure 3. Exploration Plan - Soil and Groundwater Figure 4. Photoionization Detector Results in Outdoor Wood Chip Feeding Area Figure 5. Soil Sample Results for Total Petroleum Hydrocarbons Figure 6. Groundwater Sample Results Figure 7. Groundwater Contour Map Figure 8. Proposed Remedial Action April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page i Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan TABLE OF CONTENTS (CONTINUED) LIST OF TABLES Table 1. Summary of Groundwater Elevations ......................................................... Attached Table 2. Summary of Soil Analytical Results for Total Petroleum Hydrocarbons .... Attached Table 3. Summary of Soil Analytical Results for Volatile Organic Compounds ........ Attached Table 4. Summary of Soil Analytical Results for RCRA Metals ................................. Attached Table 5. Summary of Groundwater Analytical Results for BTEX and Total Petroleum Hydrocarbons ................................................................... Attached Table 6. Summary of Groundwater Analytical Results for Volatile and Semi-volatile Organic Compounds .............................................................. Attached LIST OF APPENDICES Appendix A. Exploration Logs Appendix B. Laboratory Reports and Chain of Custody Forms April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page ii Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan 1.0 INTRODUCTION Associated Earth Sciences, Inc. (AESI) has prepared this Conceptual Remedial Action Work Plan (Work Plan) for the Gilman Walk at Country Charm (Property), formerly known as the Country Charm Dairy, located at 604 East Gilman Avenue, Arlington, Washington (Figure 1). The Property is located east of North Alcazar Avenue, along East Gilman Avenue in Arlington, Washington (Figure 2). The Property consists of a single tax parcel, Snohomish County Parcel Number 31050100302200, totaling 21.22 acres. The Work Plan has been prepared on behalf of Corner 9 Properties, LLC. The Site is defined as the extent of contamination caused by historical releases of hazardous substances to environmental media (soil and groundwater). The results from remedial investigation through multiple subsurface assessments performed by AESI indicate that there is one environmental area of concern where concentrations of chemicals of concern (COCs) including diesel- and oil-range petroleum hydrocarbons (DRPH and ORPH) in groundwater exceed applicable Washington State Model Toxics Control Act (MTCA) cleanup levels(CULs) at the Site. The area of concern for the Property is the observed petroleum contaminated soil and confirmed petroleum impacted groundwater in the vicinity of exploration pit EP-5 and borings EB-9 and EB-11 (Site). 1.1 Purpose The purpose of this Work Plan is to provide guidance for implementation of the cleanup action and to satisfy requirements of MTCA in accordance with Washington Administrative Code (WAC) 173-340-380 and WAC 173-340-430 for the Site. In addition, this Work Plan presents remedial investigation data collected and evaluated to develop a conceptual Site model (CSM) per WAC 173-340-350(7) and an evaluation of Washington State Department of Ecologyâ€™s (Ecologyâ€™s) Model Remedies for the Site. The objective of the cleanup action is to protect human health and the environment to the maximum extent practicable, restore beneficial use of the Property, and to at minimum obtain a No Further Action (NFA) determination for the Property from the Washington State Pollution Liability Insurance Agency (PLIA) Petroleum Technical Assistance Program (PTAP) or Washington State Department of Ecology (Ecology). The Work Plan addresses the remediation of the COCs present in soil and groundwater beneath the Site and includes a description of the selected remedial action. 1.2 Project Background The Property was developed as farmland by 1941 and has had up to 14 structures. Currently, the Property is a private residence and most of the structures have been demolished. Surrounding properties are predominantly agricultural and residential. A more complete description of the historical use of the Property and adjoining properties is provided in the â€œPhase I Environmental Site Assessment,â€ prepared by AESI, dated October 28, 2019 (Phase I ESA). April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 1 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan Using the information obtained during preparation of the Phase I ESA and the â€œSubsurface Exploration, Geologic Hazard, and Geotechnical Pre-Design Recommendationsâ€ report for the Property, dated June 24, 2019, for Corner 9 Properties, LLC. In late 2019 and early 2020, AESI performed subsurface assessments of the identified environmental areas of concern at the Property. 2.0 SITE CHARACTERIZATION Field activities for the subsurface assessments were performed in three phases on September 12 and December 17, 2019, and on February 13, 2020, to assess the environmental areas of concern including assessment of observed petroleum contaminated soil near exploration pit EP-5 (Figure 3). A brief description of field activities and associated dates for each phase is provided below. Sample locations for the subsurface assessments are shown on Figure 3. The first phase of assessment was performed on September 12, 2019, and included advancing six environmental exploration borings (EB-8 through EB-13) in the vicinity of EP-5 to collect soil samples near EP-5. Three soil samples were selected for laboratory analysis. Temporary wells were installed in borings EB-9, EB-10, EB-11, and EB-13 in the vicinity of EP-5 and reconnaissance groundwater samples were collected for laboratory analysis (Figure 3). During the second phase of assessment on December 17, 2019, six borings (EB-15 through EB-20) were advanced in the vicinity of a former above-ground storage tank and exploration pit EP-5 to collect environmental soil samples. Six soil samples were selected for laboratory analysis. Temporary wells were installed in borings EB-17 and EB-18 to collect shallow reconnaissance groundwater samples. No groundwater was encountered in boring EB-17; a groundwater sample was collected from EB-18. Four permanent monitoring wells identified as EB-15/MW-1, EB-16/MW-2, EB-19/MW-3, and EB-20/ MW-4 were installed to collect shallow groundwater samples. Each of the four monitoring wells were sampled during this field program. A groundwater seep sample (SEEP-20191217) was collected from closest observed seep to the Site located on the northern-facing slope (Figure 3). The existing monitoring well network (MW-1 through MW-4 and EB-1W) was surveyed and depth-to-water measurements were collected. Well EB-1W was installed for geotechnical study processes only under a separate scope of work and it is not located in the vicinity identified petroleum contamination. The third phase of assessment was conducted in February 13, 2020. AESI performed a second groundwater monitoring event and collected groundwater samples from the four monitoring wells (MW-1 through MW-4) and collected second seep sample (SEEP-20200213) to assess groundwater conditions in the vicinity of Site. In addition, shallow subsurface soil was sampled in the locations of the former Shop and the former Joelâ€™s Mobile Auto Repair operation in the Storage Shed. Shallow soil was field screened using a photoionization detector (PID) in the Feeding Area with Wood Chips and in a ditch near the former Joelâ€™s Mobile Auto Repair operation in the Storage Shed (Figures 3 and 4). April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 2 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan 2.1 Soil Sampling Methods Hollow-stem auger drilling services were provided by Cascade Drilling, LP, of Woodinville, Washington. An AESI field representative observed drilling activities and collected soil and reconnaissance groundwater samples for potential laboratory analysis. The approximate locations of the exploration borings (EB-8 through EB-20) advanced for the environmental subsurface assessments are shown on Figure 3. Hollow-stem auger borings were advanced using truck-mounted hollow-stem auger drilling equipment. During the drilling process, soil samples were obtained at 1.5-foot to 4.5-foot intervals with a 3-inch outside-diameter split-barrel sampler. Disturbed but representative samples were obtained by using the split-barrel sampler in accordance with ASTM International (ASTM) D-3550. Drilling equipment was cleaned using a HotsyÂ® steam cleaning pressure washer or equivalent prior to beginning the project and before beginning drilling at each soil boring. Sampling equipment was cleaned using an Alconoxï£¨ wash and potable water rinse prior to collecting each soil sample from the split-barrel sampler. The soil samples were observed and logged by an AESI representative in general accordance with the Unified Soil Classification System (USCS). The exploration logs are presented in Appendix A. Soil samples were screened in the field for potential evidence of contamination. Field-screening methods included visual observations, notations of odor, and obtaining headspace vapor measurements using a PID to detect the presence of volatile organic compounds (VOCs). The USCS symbol, visual, and olfactory notations for the samples, and PID readings were recorded on boring log forms, which are provided in Appendix A. Soil samples were collected directly from the split-barrel sampler using stainless steel spoons and/or U.S. Environmental Protection Agency (EPA) Method 5035A sampling kits. Soil samples were placed directly into laboratory-prepared sample containers and labeled with unique sample identification. Sample containers were placed in a chilled cooler immediately following sampling, and subsequently transported to the analytical laboratory under standard chain of custody protocols. Shallow subsurface soil was sampled for the presence of hazardous substances in the locations of the former Shop and Storage Shed. Shallow subsurface soil samples were collected by using a spade and trowel to dig to depth of approximately 6 inches below ground surface (bgs). Soil samples were placed directly into laboratory-prepared sample containers and labeled with unique sample identification. Sample containers were placed in a chilled cooler immediately following sampling, and subsequently transported to the analytical laboratory under standard chain of custody protocols. Additional readings were taken by PID. April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 3 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan 2.2 Groundwater Sample Collection The reconnaissance groundwater samples from borings EB-9, EB-10, EB-11, and EB-13 were collected by placing a temporary 5-foot section of 2-inch-diameter polyvinyl chloride (PVC) 0.010-slot well screen at the bottom of each boring. Prior to sample collection, groundwater was purged through disposable 0.25-inch-diameter tubing inserted down the temporary well using a peristatic pump and purged until the groundwater no longer appeared turbid. The temporary well screen and tubing was discarded after collecting the reconnaissance groundwater sample. A disposable bailer was used to sample EB-18 due to its temporary well screen was at a depth of 30 to 40 feet bgs. Following the temporary well purging, reconnaissance groundwater samples were collected from the pump outlet tubing or bailer and placed directly into laboratory-prepared glass sample containers and labeled with unique sample identification. Sample containers were placed in a chilled cooler immediately following sampling, and subsequently transported to the analytical laboratory under standard chain of custody protocols. Groundwater sampling from permanent monitoring wells consisted of collecting depth to water measurements (Table 1) and groundwater samples from the monitoring well network including wells MW-01 through MW-04 (Figure 3). AESI personnel opened accessible monitoring wells at the Site and permitted water levels to equilibrate with atmospheric pressure before obtaining depth-to-water measurements. Water levels were measured to an accuracy of 0.01 feet, relative to the top of well casing using an electronic water level indicator. The groundwater sampling was performed in general accordance with EPA low-flow sampling protocols. Groundwater samples were collected after stabilization of field parameters were met during the purging process. Purging and sampling of the monitoring wells were performed using a peristaltic pump and dedicated polyethylene tubing. Following purging and stabilization, groundwater samples were collected from the pump outlet tubing located upstream of the flow-through cell and placed directly into laboratory-prepared glass sample containers labeled with the site name, date, time, exploration number, sample number, and sampling personnel. Sample containers were placed in a chilled cooler immediately following sampling, and subsequently transported to the analytical laboratory under standard chain of custody protocols. 2.3 Analytical Results This section summarizes the results for soil and groundwater samples analyzed for the subsurface assessment. Soil sample results from the subsurface assessments are summarized in Tables 2 through 4, and the primary petroleum indicator hazardous compounds (GRPH, DRPH, ORPH, benzene) are presented on Figure 5. Groundwater sample analytical results are summarized in Tables 5 and 6 and the primary petroleum indicator hazardous compounds (GRPH, DRPH, ORPH, April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 4 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan benzene) presented on Figure 6. Analytical laboratory reports and sample chain of custody forms are provided in Appendix B. Selected soil and groundwater samples analyzed were evaluated with respect to MTCA Method A CULs for unrestricted land use. A summary of field observations and analytical results for soil and groundwater samples analyzed is provided below. 2.3.1 Soil As part of first and second phases of assessment, a total of nine soil samples were analyzed for select chemical analysis based on due diligence research, identified historical operations at the Property, field observations, and results from initial assessments. Seven soil samples were collected from hollow-stem auger borings located in the vicinity of exploration location EP-5 and two soil samples were collected from the two hollow-stem borings located in the vicinity of the reported aboveground storage tank (AST). The selected soil samples analyzed for chemical analysis were either below the laboratory reporting limits or below the applicable MTCA CULs (Tables 2 through 4). In third phase of assessment, two shallow subsurface soil samples were collected at the former Shop and two from the former Joelâ€™s Mobile Auto Repair operation in the Storage Shed. The two shallow subsurface soil samples from the former Joelâ€™s Mobile Auto Repair operation in the Storage Shed were analyzed for GRPH by NWTPH-Gx, DRPH and ORPH by NWTPH-Dx, VOCs by EPA Method 8260C, and RCRA 8 Metals by EPA Method 200.8 and 1631E. The results for GRPH, DRPH, ORPH, and RCRA 8 Metals in the two soil samples were below MTCA Method A CULs. The results for VOCs in the two shallow subsurface soil samples were below laboratory reporting limits. The two shallow subsurface soil samples collected from adjacent to the Shop were analyzed for DRPH and ORPH by NWTPH-Dx, VOCs by EPA Method 8260C, and RCRA 8 Metals by EPA Method 200.8 and 1631E. The results for DRPH, ORPH, and RCRA 8 Metals in the two shallow subsurface soil samples were below MTCA Method A CULs. The results for VOCs in the two shallow subsurface soil samples were below laboratory reporting limits. 2.3.2 Groundwater The results for analyzed groundwater samples for both the reconnaissance temporary wells and monitoring wells are summarized below by phase. During Phase 1, reconnaissance groundwater samples (EB-9-GW, EB-10-GW, EB-11-GW, and EB-13-GW) were analyzed for TPH by NWTPH-HCID and NWTPH-Dx, VOCs by EPA Method 8260C, and semi-volatile organic compounds (SVOCs) by EPA Method 8270D. DRPH was detected at a concentration of 6,900 micrograms per liter (Âµg/L) in EB-9, which is above the MTCA Method A CUL of 500 Âµg/L. ORPH was detected at concentrations of 2,800 Âµg/L in EB-9 and 730 Âµg/L in EB-11, which are above the MTCA Method A CUL of 500 Âµg/L. The remaining analyzed chemical compounds were below the applicable MTCA CULs and/or the laboratory reporting limits (Tables 5 and 6; Figure 6). April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 5 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan During Phase 2, reconnaissance groundwater sample EB-18-GW and four groundwater samples from permanent monitoring well MW-1 through MW-4 were analyzed for DRPH and ORPH by NWTPH-Dx, VOCs by EPA Method 8260C, and SVOCs by EPA Method 8270D. Concentrations of analyzed chemical compounds were below the applicable MTCA CULs and/or the laboratory reporting limits (Tables 5 and 6; Figure 6). No groundwater sample was collected from well EB-1W because it is not currently considered a point of compliance for groundwater at the Site. A Seep north of REC 1 (Figure 3) was sampled for DRPH by NWTPH-Dx, VOCs by EPA Method 8260C, and SVOCs by EPA Method 8270D. The initial sample result showed ORPH at 540 Âµg/L, which is above the MTCA CUL of 500 Âµg/L. This seep sample was retested for ORPH using a silica gel preparation to screen out non-petroleum organic matter from the hillslope with forest duff (leaves, bark, roots, etc.). The seep sample result with silica gel preparation indicated concentrations of ORPH were below the applicable MTCA CULs and laboratory reporting limits. During completion of Phase 3, the four groundwater samples from permanent monitoring wells MW-1 through MW-4 were analyzed for DRPH and ORPH by NWTPH-Dx, VOCs by EPA Method 8260C, and SVOCs by EPA Method 8270D. Concentrations of analyzed chemical compounds were below the applicable MTCA CULs and/or the laboratory reporting limits (Tables 5 and 6; Figure 6). A seep north of REC 1 (Figure 3) was analyzed for DRPH by NWTPH-Dx, VOCs by EPA Method 8260C, and SVOCs by EPA Method 8270D. The seep sample (S-1) result indicated concentrations of analyzed chemical compounds were below the applicable MTCA CULs and laboratory reporting limits. 3.0 CONCEPTUAL SITE MODEL The conceptual site model (CSM) is based on the available data and subsurface assessments, observations, and results. Detailed field observations and results regarding Site geology and hydrogeology, field screening, and analytical data is provided in the â€œSubsurface Site Assessment,â€ prepared by AESI, dated March 18, 2020. The CSM identifies current and potential future exposure pathways for human and ecological receptors. The CSM therefore forms the basis for CUL development and selection. The CSM is discussed below: â€¢ The Site and surrounding land is zoned for residential and agricultural and is expected to continue as such in the future. â€¢ Property geology consist of soils interpreted to be gravelly fill (2.5 to 4 feet in thickness) underlain by recessional outwash deposits composed of interbedded sands, silts, and gravels. The recessional outwash deposits, in turn, are underlain in all but two of the borings by glacially consolidated Vashon lodgement till. The lodgement till consisted of dense to very dense silty sands to sandy silts with variable amounts of gravel. The contact between the recessional outwash and the denser till slopes down to the west of Site beginning at approximately 13 feet bgs near the Site (vicinity of EP-5) and dropping deeper to the west of the Site. April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 6 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan â€¢ Groundwater is present at a depth of approximately 9 feet bgs beneath the Site and deepens to the west beneath the Property. Groundwater in the vicinity of the Site is inferred to flow west along the outwash deposits and till contact. â€¢ The average horizontal hydraulic gradient for shallow groundwater in the vicinity of the Site is approximately 0.006 for the December 2019 groundwater monitoring event and approximately 0.008 for the February 2020 groundwater monitoring event. The shallow groundwater flow direction is toward the west for the December 2019 groundwater monitoring event (Figure 7). The observed groundwater elevations, hydraulic gradient, and flow direction from the February 2020 event are similar to the December 2019 event. â€¢ The nearest surface water is the South Fork Stillaguamish River, approximately 600 feet to the northwest of the Site. â€¢ Field observations indicate petroleum contaminated soil at exploration pit EP-5 and petroleum impacted groundwater is present immediately adjacent to the west of EP-5. Therefore, the petroleum contaminated soil observed at EP-5 is likely the source for DRPH and ORPH detected in groundwater in the vicinity of borings EB-9 and EB-11. â€¢ DRPH and ORPH are detected in groundwater samples collected from borings EB-9 and EB-11 at a concentration exceeding the MTCA Method A CULs. â€¢ Media of concern for the Site include soil and groundwater. â€¢ Chemicals of concern (COC) at Site include DRPH and ORPH for soil and groundwater. â€¢ The potential receptors that are potentially at risk from exposure associated with the presence of Site COCs include terrestrial wildlife (terrestrial birds and burrowing animals) and humans (commercial, environmental, utility, and construction workers; and residential). â€¢ Exposure assessment identified the completeness of exposure pathways from environmental media of concern for the potential receptors for the Site. Direct contact with petroleum hydrocarbon contaminated soil is potentially a complete pathway due to observations of potential petroleum contaminated soil at 5 feet bgs at EP-5. Another potential complete pathway for Site receptors is direct contact with petroleum impacted groundwater. Remaining exposure pathways are considered incomplete for Site receptors. â€¢ A Terrestrial Ecological Evaluation (TEE) is required by WAC 173-340-7940. As the Site doesnâ€™t qualify for a TEE exclusion, a site-specific TEE will need to be prepared. April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 7 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan 4.0 CLEANUP STANDARDS The selected remedial action must comply with the MTCA cleanup regulations specified in WAC 173-340 and with applicable state and federal law. The CULs selected for the Site are consistent with the remedial action objectives, which state that the remedial objective is to contain existing contamination of soil and/or groundwater to limit exposure to humans and the environment and prevent contaminants in groundwater from migrating off the Property. In addition to mitigating risks to human health and the environment, achieving the remedial action objectives will allow Ecology or PLIA to issue a determination of NFA for the Site. 4.1 Applicable or Relevant and Appropriate Requirements Under WAC 173-340-350 and 173-340-710, applicable requirements include regulatory cleanup standards, standards of control, and other environmental requirements, criteria, or limitations established under state or federal law that specifically address contaminant, remedial action, location, or other circumstances at a site. MTCA defines relevant and appropriate requirements as: those cleanup action standards, standards of control, and other human health and environmental requirements, criteria or limitations established under state and federal law that, while not legally appliable to the hazardous substance, cleanup action, location, or other circumstances at a site, the department determines addresses problems or situations sufficiently similar to those encountered at the site that their use is well suited to the particular site. The criteria specified in WAC 173-340-710 (3) shall be used to determine if a requirement is relevant and appropriate. Remedial actions conducted under MTCA must comply with the substantive requirements of the applicable or relevant and appropriate requirements (ARARs) but are exempt from their procedural requirements (WAC 173-340-710 [9]). Specifically, this exemption applies to state and local permitting requirements under the Washington State Water Pollution Control Act, Solid Waste Management Act, Hazardous Waste Management Act, Clean Air Act, State Fisheries Code, and Shoreline Management Act. ARARs will be assessed for their applicability to the Site during permitting and cleanup preparation activities. 4.2 Points of Compliance The point of compliance is the location where the enforcement limits that are set in accordance with WAC 173-200-050 will be measured and cannot exceed (WAC 173-200-060). Once the CULs have been attained at the defined points of compliance, the impacts present beneath the Site will no longer be considered a threat to human health or the environment. April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 8 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan In accordance with WAC 173-340-740(6)(b-d), the standard point of compliance for direct contact exposure is throughout the Site from ground surface to 15 feet bgs, which is a reasonable estimate of the depth of soil that could be excavated and distributed at the soil surface as a result of development activities. If the proposed remedial action is implemented, soils containing COCs above the CULs will be fully removed and the point of compliance for soil will be met. In accordance with WAC 173-340-720(8)(a)(b), the point of compliance for groundwater is defined as the uppermost level of the saturated zone extending vertically to the lowest depth that potentially could be impacted by the COCs throughout the Site. The existing monitoring wells MW-1 through MW-4 will be used to evaluate groundwater after implementation of the selected remedial action. 4.3 Cleanup Levels The selected remedial action must comply with the MTCA cleanup regulations specified in WAC 173-340 and applicable state and federal laws. The CULs selected for the Site are the MTCA Method A CULs for Soil and Groundwater, WAC 173-340-740(2)(b)(i) Table 740-1 and Table 720-1. The objective of the remedial action is to reduce concentrations of COCs in soil and groundwater beneath the Site to below their CULs. The COCs for soil at the Site include DRPH and ORPH, and their corresponding CULs are 2,000 mg/kg and 2,000 mg/kg respectively. The COCs for groundwater at the Site include DRPH and ORPH, and their corresponding are CULs of 500 Âµg/L and 500 Âµg/L respectively. 5.0 MODEL REMEDY SELECTION Ecology has developed standardized cleanup methods called â€œmodel remediesâ€ (Ecology 2017). The selected remedial action will include excavation of petroleum contaminated soil until concentrations of COCs are below the applicable CULs. Removal of the contaminant source material will reduce COCs partitioning in groundwater. AESI proposes using Model Remedy 1 for the Site. This model remedy is for situations where the selected remedial action results in detections of COCs reducing to below the MTCA Method A CULs for soil and groundwater throughout the Site. To demonstrate compliance, compliance soil sampling and 1 year of quarterly groundwater monitoring would be necessary to demonstrate the effectiveness of the remedial action. An environmental covenant would not be required under this remedy. April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 9 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan 6.0 SELECTED REMEDIAL ACTON The remedial action chosen to meet the criteria for use of Model Remedy 1 will include remedial excavation and off-Site disposal of petroleum contaminated soil and associated temporary excavation dewatering of petroleum impacted groundwater from the remedial excavation, and 1 year of quarterly groundwater monitoring. Excavation of petroleum contaminated soil at the Site will require permitting with the City of Arlington for grading and filling. The project would likely be subject to limited work hours, limited hauling hours, and designated haul routes for truck traffic. The work area(s) would require security and security fencing, which may need to be semi-permanent depending upon the permit conditions. Prior to excavating soil, a geotechnical evaluation would be performed to determine appropriate shoring and other stabilization techniques that should be implemented to safely access the impacted soil at the required removal depths. For volume estimating purposes, it is assumed that shoring will not be needed for excavation of petroleum contaminated soil and temporary near-vertical excavation sidewalls will be allowed. A temporary shoring system, such as slide rail, trench box or similar shoring system, will be used if required to stabilize excavation sidewalls or to protect utilities and adjacent structures. Petroleum contaminated soil would be removed from depths of approximately 5 to 12 feet bgs. The estimated total volume of petroleum contaminated soil to be removed from the Site is expected to be approximately 200 bank cubic yards. Approximately 200 bank cubic yards of clean overburden would be removed from the Site prior to removing the underlining petroleum contaminated soil. Prior to disposal, excavated soil will be temporary stockpiled and tested to characterize the soil as clean or contaminated. Currently, it is assumed that excavated soil is unsuitable for reuse and Site restoration; however, upon approval from a geotechnical professional, clean soil may be reused as excavation backfill if soil is assessed to be suitable for planned future land use. The proposed remedial excavation area is shown on Figure 8. The general scope of this remedial action would consist of the following: â€¢ Preparing a Health and Safety Plan (HASP) and a Temporary Erosion and Sediment Control Plan (TESC); â€¢ Obtaining appropriate permits for the remedial action; â€¢ Preparing the Site with appropriate traffic control and public safety and security measures; April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 10 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan â€¢ Excavating of approximately 200 bank cubic yards of clean overburden soil and approximately 200 bank cubic yards and stockpiling that soil for testing and assessment of reuse; â€¢ Loading, transporting and disposing of approximately 200 cubic yards of petroleum contaminated soil to a permitted facilities, and 200 cubic yards of clean overburden unsuitable for Site restoration to an off-Site reuse facilities; â€¢ During excavation activities, temporary construction dewatering will be performed to petroleum impacted groundwater within the remedial excavation; â€¢ Soil sampling and analysis to document soil conditions for reuse or disposal; â€¢ Soil sampling and analysis of the limits of the excavation; â€¢ Placing and compacting stockpiled clean overburden soil designated as suitable structural fill and additional clean backfill in the excavated areas and restoring the ground surface; â€¢ Performing 1 year of quarterly groundwater monitoring events demonstrating compliance for groundwater and associated reporting. A brief technical memorandum with a data package will be provided to the Corner 9 Properties, LLC each quarter that presents current groundwater sampling results. After the second quarterly event, a groundwater monitoring report will be prepared. Results from the fourth quarter event will be presented in the Cleanup Action Report; â€¢ Entering appropriate data in the Environmental Information Management (EIM) database managed by Ecology; and â€¢ Preparation of a Cleanup Action Report, submittal of the report to the regulatory agency, and request a determination of NFA. 7.0 LIMITATIONS This report has been prepared for the exclusive use of the Corner 9 Properties, LLC c/o Land Development Project Manager Landed Gentry Homes and Communities, and their agents, for specific application to this project. The results contained in this report are based upon the information acquired during this assessment. Within the limitations of scope, schedule, and budget, our services have been performed in accordance with generally accepted environmental industry practices in effect in this area at the time our report was prepared. No other warranty, express or implied, is made. April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 11 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan 8.0 CLOSURE We are pleased to have had this opportunity to work with you and are confident that this report will aid in the evaluation of the Site. Should you have any questions, please do not hesitate to call. Sincerely, ASSOCIATED EARTH SCIENCES, INC. Kirkland, Washington ______________________________ Timothy S. Brown, L.Hg. Beau A. Johnson, L.G. Associate Hydrogeologist Senior Geologist April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 12 Gilman Walk at Country Charm Property Arlington, Washington Conceptual Remedial Action Work Plan 9.0 REFERENCES Associated Earth Sciences, Inc. (AESI), 2019a, Phase I environmental site assessment - Arlington Residential Property (AKA Gilman Walk at Country Charm): Prepared for Corner 9 Properties, LLC c/o Land Development Project Manager Landed Gentry Homes and Communities, October 28, 2019. AESI, 2019b, Subsurface exploration, geologic hazards, and preliminary geotechnical engineering recommendations - Arlington Residential Property (AKA Gilman Walk at Country Charm): Prepared for Corner 9 Properties, LLC c/o Land Development Project Manager Landed Gentry Homes and Communities, November 2019. AESI, 2019c, Subsurface exploration, geologic hazard, and geotechnical pre-design recommendations report - Arlington Residential Property (AKA Gilman Walk at Country Charm): Prepared for Corner 9 Properties, LLC c/o Land Development Project Manager Landed Gentry Homes and Communities, June 24, 2019. AESI, 2020, Subsurface Site Assessment - Arlington Residential Property (AKA Gilman Walk at Country Charm): Prepared for Corner 9 Properties, LLC c/o Land Development Project Manager Landed Gentry Homes and Communities, March 18, 2020. ASTM International (ASTM) D-3550. Washington State Department of Ecology, Ecology 2017, Model Remedies for Sites with Petroleum Impacts to Groundwater, December 2017. Washington State Model Toxics Control Act, WAC 173-340. April 28, 2020 ASSOCIATED EARTH SCIENCES, INC. BAJ/ms - 20190211V006-4 Page 13 FIGURES Â¬Â« Â¬Â« Â¥ Â£Â¤ Â¬Â« SUBJECT PROPERTY !( Â¥ Copyright:Â© 2013 National Geographic Society, i-cubed Island Snohomish County County Â± 0 1000 2000 VICINITY MAP FEET GILMAN WALK AT COUNTRY CHARM DATA SOURCES / REFERENCES: NOTE: BLACK AND WHITE USGS: 7.5' SERIES TOPOGRAPHIC MAPS, ESRI/I-CUBED/NATIONAL REPRODUCTION OF THIS COLOR ARLINGTON, WASHINGTON ORIGINAL MAY REDUCE ITS GEOGRAPHIC SOCIETY 2013 EFFECTIVENESS AND LEAD TO PROJ NO. DATE: FIGURE: LOCATIONS AND DISTANCES SHOWN ARE APPROXIMATE INCORRECT INTERPRETATION 20190211V005 2/20 1 \\kirkfile2\GIS\GIS_Projects\aaY2019\190211 Arlington Residential\aprx_mxd\V005\190211V005 F1 VM_Gilman.aprx LEGEND: AST FORMER DIESEL AST SITE BOUNDARY EXISTING BUILDING DEMOLISHED BUILDING CONSERVATION AREA NOTE: LOCATION AND DISTANCES SHOWN ARE APPROXIMATE. NOTES: 1. BASE MAP REFERENCE: KING CO STREETS, PARCELS AND CONTOURS 01/17, PICTOMETERY AERIAL 2015. 1.5 - STORY DWELLING BUILDING #2 1904 REC 2 BUILDING #4 FEEDING SHED 1976 REC 1 LOAFING BUNKER / SILO MILK PARLOR SHED 1995 CONSERVATION AREA STORAGE 1975 SHED LOAFING 1992 SINGLE-FAMILY SHED SHOP 1972 RESIDENCE BUILDING #3 THE BARN BUILDING #1 1993 1980 EQUIPMENT SHED DOUBLE WIDE 1967 MOBILE HOME 1980 SINGLE-FAMILY RESIDENCE BLACK AND WHITE REPRODUCTION OF THIS COLOR ORIGINAL MAY REDUCE ITS EFFECTIVENESS AND LEAD TO INCORRECT INTERPRETATION. a s s o c i a t e d e a r t h s c i e n c e s i n c o r p o r a t e d N SITE PLAN 0 150 300 GILMAN WALK AT COUNTRY CHARM FEET ARLINGTON, WASHINGTON PROJ NO. DATE: FIGURE: 20190211V005 2/20 2 190211 Arlington Res \ 20190211V005 F2 S-P.cdr SITE ENVIRONMENTAL EXPLORATION !( BORING (9/19) GEOTECHNICAL EXPLORATION !( BORING (6/19) 70 GEOTECHNICAL EXPLORATION PIT ") (6/19) MONITORING WELL (6/19, 12/19) ADDITIONAL SHALLOW SOIL Â SAMPLE BY PID (2/20) Â SHALLOW SOIL SAMPLE (2/20) !H SEEP SAMPLE EP-13 EB-2") PARCEL !( EB-16 / MW-2 CONTOUR 10 FT EB-12EB-20 / MW-4 !( CONTOUR 2 FT EB-8!(!( EB-11 !( ") EB-10 CITY OF ARLINGTON COUNTRY EB-19 / MW-3 !( EB-9EP-5 CHARM PARK EB-13 !H !( 70 EB-15 / MW-1 MANAVE 80 IL EG 90 EP-4 100 ") PID - PHOTOIONIZATION DETECTOR 110 DATA SOURCES / REFERENCES: WA STATE LIDAR PORTAL: NORTH PUGET SOUND 2016 120 ACQUIRED MARCH - SEPT 2016, GRID CELL SIZE IS 3' EP-3 CONTOURS FROM LIDAR ") SNOHOMISH CO: STREETS, PARCELS, 1/18, AERIAL: SNOHOMISH CO., PICTOMETRY INT. 2012 CITY OF ARLINGTON PARKS 2019 EB-18 130 !( LOCATIONS AND DISTANCES SHOWN ARE APPROXIMATE STORM DRAIN EB-17 SS4:0.5 PID 0.2 PPMÂSS2:0.5 !( SS3:0.5 Â Â SS6:0.5Â ÂPID 0.2 PPM Â Snohomish ÂÂ PID 0.2 PPM EB-1W County Â± SS1:0.5 SS5:0.5 0 60 Â Island County FEET 140 EP-2 ") MACHINE SHED BLACK AND WHITE REPRODUCTION OF THIS COLOR ORIGINAL MAY REDUCE ITS EFFECTIVENESS AND LEAD TO INCORRECT INTERPRETATION SAMPLE LOCATIONS GILMAN WALK AT COUNTRY CHARM ARLINGTON, WA PROJ NO. DATE: FIGURE: 20190211V005 2/20 3 \\kirkfile2\GIS\GIS_Projects\aaY2019\190211 Arlington Residential\aprx_mxd\V005\190211V005 F3 LEGEND: AST FORMER DIESEL AST SITE BOUNDARY EXISTING BUILDING DEMOLISHED BUILDING CONSERVATION AREA APPROXIMATE FEEDING AREA WITH WOOD CHIPS PID PHOTOIONIZATION DETECTOR PID ADDITIONAL SHALLOW SOIL SAMPLE BY PID - 2/20 NOTE: LOCATION AND DISTANCES SHOWN ARE APPROXIMATE. NOTES: 1. BASE MAP REFERENCE: KING CO STREETS, PARCELS AND 1.5 - STORY CONTOURS 01/17, PICTOMETERY AERIAL 2015. DWELLING BUILDING #2 1904 PID 0.1PPM BUILDING #4 SAMPLING AREA FEEDING SHED 1976 PID SAMPLING AREA PID 0.0PPM LOAFING 0.2PPM BUNKER / SILO MILK PARLOR SHED 1995 CONSERVATION AREA STORAGE 1975 SHED LOAFING 1992 SINGLE-FAMILY SHED SHOP 1972 RESIDENCE BUILDING #3 THE BARN BUILDING #1 1993 1980 EQUIPMENT SHED DOUBLE WIDE 1967 MOBILE HOME 1980 SINGLE-FAMILY RESIDENCE BLACK AND WHITE REPRODUCTION OF THIS COLOR ORIGINAL MAY REDUCE ITS EFFECTIVENESS AND LEAD TO INCORRECT INTERPRETATION. a s s o c i a t e d e a r t h s c i e n c e s i n c o r p o r a t e d N FEEDING AREA SAMPLE LOCATIONS 0 150 300 GILMAN WALK AT COUNTRY CHARM FEET ARLINGTON, WASHINGTON PROJ NO. DATE: FIGURE: 20190211V005 2/20 4 190211 Arlington Res \ 20190211V005 F4 pid.cdr SITE ENVIRONMENTAL EXPLORATION !( BORING (9/19) GEOTECHNICAL EXPLORATION !( BORING (6/19) 70 GEOTECHNICAL EXPLORATION PIT ") (6/19) MONITORING WELL (6/19, 12/19) ADDITIONAL SHALLOW SOIL Â SAMPLE BY PID (2/20) Â SHALLOW SOIL SAMPLE (2/20) !H SEEP SAMPLE EP-13 EB-2") PARCEL !( EB-16 / MW-2 CONTOUR 10 FT EB-12EB-20 / MW-4 !( CONTOUR 2 FT EB-8!(!( EB-11 !( ") EB-10 CITY OF ARLINGTON COUNTRY EB-19 / MW-3 !( EB-9EP-5 CHARM PARK EB-13 !H E !( 70 EB-15 / MW-1 80 ILMANAV PID - PHOTOIONIZATION DETECTOR EG 90 EP-4 INDICATOR HAZARDOUS SUBSTANCES: ") GRPH - GASOLINE-RANGE PETROLEUM HYDROCARBONS 100 DRPH - DIESEL-RANGE PETROLEUM HYDROCARBONS ORPH - OIL-RANGE PETROLEUM HYDROCARBONS 110 DATA SOURCES / REFERENCES: WA STATE LIDAR PORTAL: NORTH PUGET SOUND 2016 ACQUIRED MARCH - SEPT 2016, GRID CELL SIZE IS 3' 120 EP-3 CONTOURS FROM LIDAR ") SNOHOMISH CO: STREETS, PARCELS, 1/18, AERIAL: SNOHOMISH CO., PICTOMETRY INT. 2012 CITY OF ARLINGTON PARKS 2019 EB-18 130 !( LOCATIONS AND DISTANCES SHOWN ARE APPROXIMATE STORM DRAIN EB-17 SS4:0.5 PID 0.2 PPMÂSS2:0.5 !( SS3:0.5 Â Â SS6:0.5Â ÂPID 0.2 PPM Â Snohomish ÂÂ PID 0.2 PPM EB-1W County Â± SS1:0.5 SS5:0.5 0 60 Â Island County FEET 140 EP-2 ") MACHINE SHED BLACK AND WHITE REPRODUCTION OF THIS COLOR ORIGINAL MAY REDUCE ITS EFFECTIVENESS AND LEAD TO INCORRECT INTERPRETATION TOTAL PETROLEUM HYDROCARBON RESULTS FOR SOIL SAMPLES GILMAN WALK AT COUNTRY CHARM ARLINGTON, WA PROJ NO. DATE: FIGURE: 20190211V005 2/20 5 \\kirkfile2\GIS\GIS_Projects\aaY2019\190211 Arlington Residential\aprx_mxd\V005\190211V005 F5 SITE ENVIRONMENTAL EXPLORATION !( BORING (9/19) GEOTECHNICAL EXPLORATION !( BORING (6/19) 70 GEOTECHNICAL EXPLORATION PIT ") (6/19) MONITORING WELL (6/19, 12/19) ADDITIONAL SHALLOW SOIL Â SAMPLE BY PID (2/20) Â SHALLOW SOIL SAMPLE (2/20) !H SEEP SAMPLE EP-13 EB-2") PARCEL !( EB-16 / MW-2 CONTOUR 10 FT EB-20 / MW-4 EB-12!( CONTOUR 2 FT EB-8!(!( EB-11 !( ") EB-10 CITY OF ARLINGTON COUNTRY EB-19 / MW-3 !( EB-9EP-5 CHARM PARK EB-13 !H E !( 70 EB-15 / MW-1 MANAV 80 IL PID - PHOTOIONIZATION DETECTOR EG 90 EP-4 INDICATOR HAZARDOUS SUBSTANCES: 100 ") GRPH - GASOLINE-RANGE PETROLEUM HYDROCARBONS DRPH - DIESEL-RANGE PETROLEUM HYDROCARBONS ORPH - OIL-RANGE PETROLEUM HYDROCARBONS 110 DATA SOURCES / REFERENCES: WA STATE LIDAR PORTAL: NORTH PUGET SOUND 2016 120 ACQUIRED MARCH - SEPT 2016, GRID CELL SIZE IS 3' EP-3 CONTOURS FROM LIDAR ") SNOHOMISH CO: STREETS, PARCELS, 1/18, AERIAL: SNOHOMISH CO., PICTOMETRY INT. 2012 CITY OF ARLINGTON PARKS 2019 EB-18 130 !( LOCATIONS AND DISTANCES SHOWN ARE APPROXIMATE STORM DRAIN EB-17 SS4:0.5 MACHINE PID 0.2 ppmÂSS2:0.5 !( SS3:0.5 Â SHED Â SS6:0.5Â ÂPID 0.2 ppm Â Snohomish ÂÂ PID 0.2 ppm EB-1W County Â± SS1:0.5 SS5:0.5 0 60 Â Island County FEET 140 EP-2 ") STORAGE BLACK AND WHITE REPRODUCTION OF THIS COLOR ORIGINAL MAY REDUCE ITS SHED EFFECTIVENESS AND LEAD TO INCORRECT INTERPRETATION TOTAL PETEOLEUM HYDROCARBON RESULTS FOR GROUNDWATER SAMPLES GILMAN WALK AT COUNTRY CHARM ARLINGTON, WA PROJ NO. DATE: FIGURE: 20190211V005 2/20 6 \\kirkfile2\GIS\GIS_Projects\aaY2019\190211 Arlington Residential\aprx_mxd\V005\190211V005 F6 LEGEND: EBW MONITORING WELL XX.X GROUNDWATER ELEVATION - 12/17/19 SEEP OBSERVED ON 6/19/19 GROUNDWATER CONTOUR INFERRED WHERE DASHED INFERRED GROUNDWATER FLOW DIRECTION 1 17.5 EB-16W / MW-4 115 117.4 117.50 117.6 117.3 117.2 CONTOUR INTERVAL = 2â€™ EB-20W / MW-4 1 117.59 10 NOTE: LOCATION AND DISTANCES SHOWN ARE APPROXIMATE. EB-19W / MW-3 EB-15W / MW-1 117.12 117.59 105 NOTES: 1. BASE MAP REFERENCE: SNOHOMISH COUNTY PICTOMETRY 2012 100 95 90 EB-1W 85.76 BLACK AND WHITE REPRODUCTION OF THIS COLOR ORIGINAL MAY REDUCE ITS EFFECTIVENESS AND LEAD TO INCORRECT INTERPRETATION. a s s o c i a t e d e a r t h s c i e n c e s i n c o r p o r a t e d N GROUNDWATER CONTOUR MAP 0 30 60 GILMAN WALK AT COUNTRY CHARM FEET ARLINGTON, WASHINGTON PROJ NO. DATE: FIGURE: 20190211V005 2/20 7 190211 Arlington Res \ 190211V005 F7 GW .cdr 110 120 NAVE EGILMA EB-16 / MW-2 EB-12 !( EB-20 / MW-4 EB-8 !( EB-10 !( EP-5 EB-11 EB-9!( ") !( EB-19 / MW-3 EB-15 / MW-1 EB-13 !( SR 530 SR 530 SR 009 ENVIRONMENTAL PROPOSED !( EXPLORATION REMEDIAL BORING (9/19) EXCAVATION GEOTECHNICAL AREA ") EXPLORATION PIT CONTOUR 10 FT (6/19) Â± MONITORING CONTOUR 2 FT 0 20 WELL (12/19) PROPOSED REMEDIAL ACTION Feet DATA SOURCES / REFERENCES: WA STATE LIDAR PORTAL: NORTH PUGET SOUND 2016 ACQUIRED MARCH - SEPT 2016, GRID CELL SIZE IS 3' GILMAN WALK AT COUNTRY CHARM NOTE: BLACK AND WHITE CONTOURS FROM LIDAR REPRODUCTION OF THIS COLOR ARLINGTON, WASHINGTON SNOHOMISH CO: STREETS, PARCELS 1/18, ORIGINAL MAY REDUCE ITS AERIAL PICTOMETRY INT. 2015 EFFECTIVENESS AND LEAD TO PROJ NO. DATE: FIGURE: LOCATIONS AND DISTANCES SHOWN ARE APPROXIMATE INCORRECT INTERPRETATION 20190211V006 4/20 8 \\kirkfile2\GIS\GIS_Projects\aaY2019\190211 Arlington Residential\aprx_mxd\190211V006 F8 SP_Gilman.aprx TABLES Table 1 Interim Action Work Plan Summary of Groundwater Elevations Arlington Residential East Gilman Avenue Arlington, Washington Depth to Depth to Top of Depth to Bottom Top of Casing Depth to Groundwater Groundwater Well Screen of Well Screen Elevation (1) Groundwater Elevation Well Number Date Taken By (feet approximate)(feet approximate) (feet) (feet btoc) (feet) 12/17/2019 AESI 9.01 117.59 MW-1 4.65 14.65 126.6 2/12/2020 AESI 8.68 117.92 12/17/2019 AESI 10.23 117.50 MW-2 4.8 14.8 127.73 2/12/2020 AESI 10.02 117.71 12/17/2019 AESI 9.12 117.12 MW-3 4.95 14.95 126.24 2/12/2020 AESI 8.88 117.36 12/17/2019 AESI 10.66 117.59 MW-4 4.75 14.75 128.25 2/12/2020 AESI 10.32 117.93 12/17/2019 AESI 38.70 85.76 EB-1W 40 50 124.46 2/12/2020 AESI 33.08 91.38 NOTES: (1) Elevation data for all wells was surveyed by True North Land Surveying, Inc. using Vertical Datum NAVD 88. Elevations noted are the top of PVC casing. AESI = Associated Earth Sciences, Inc. feet btoc = feet below top of casing 3/2/2020 Page 1 of 1 Table 2 Subsurface Site Assessment Summary of Soil Analytical Results Total Petroleum Hydrocarbons Arlington Residential East Gilman Avenue Arlington, Washington Analytical Results [milligrams per kilogram (mg/kg)] Volatile Petroleum Compounds (1) Total Petroleum Hydrocarbons (1, 2) Exploration / Depth Well Location Sample ID Sample Date Sampled By (feet) Benzene Toluene Ethylbenzene Total XylenesGasoline Range HydrocarbonsDiesel Range HydrocarbonsHeavy Oil Range Hydrocarbons EB-8 EB-8-6.5 9/12/2019 AESI 6.5 < 0.03 < 0.05 < 0.05 < 0.1 < 20 < 50 < 250 EB-9-6.5 9/12/2019 AESI 6.5 < 0.03 < 0.05 < 0.05 < 0.1 < 20 < 50 < 250 EB-9 EB-9-12.5 9/12/2019 AESI 12.5 < 0.03 < 0.05 < 0.05 < 0.1 < 20 < 50 < 250 EB-15 EB-15-13 12/9/2019 AESI 13 < 0.03 < 0.05 < 0.05 < 0.1 < 5 < 50 < 250 EB-16 EB-16-10 12/9/2019 AESI 10 < 0.03 < 0.05 < 0.05 < 0.1 < 5 < 50 < 250 EB-17 EB-17-13 12/9/2019 AESI 13 < 0.03 < 0.05 < 0.05 < 0.1 < 5 < 50 < 250 EB-18 EB-18-36 12/10/2019 AESI 36 < 0.03 < 0.05 < 0.05 < 0.1 < 5 < 50 < 250 EB-19 EB-19-10 12/10/2019 AESI 10 < 0.03 < 0.05 < 0.05 < 0.1 < 5 < 50 < 250 EB-20 EB-20-13 12/10/2019 AESI 13 < 0.03 < 0.05 < 0.05 < 0.1 < 5 < 50 < 250 Model Toxics Control Act Cleanup Level (3) 0.03 7 6 9 30/100 (4) 2,000 2,000 NOTES: (1) Samples were analyzed by Friedman & Bruya, Inc. of Seattle, Washington using NWTPH Method NWTPH-HCID, NWTPH Method NWTPH-Gx, or EPA Method 8260C. (2) Samples were analyzed by Friedman & Bruya, Inc. of Seattle, Washington using NWTPH Method NWTPH-HCID or NWTPH Method NWTPH-Dx. (3) MTCA Cleanup Regulation, Chapter 173-340-900 of WAC, Table 740-1 Method A Soil Cleanup Levels for Unrestricted Land Uses. (4) MTCA Method A Cleanup Level is 30 mg/kg when benzene is detected and 100 mg/kg when benzene is not detected. Bold = concentration below laboratory detection limit, but exceeding the MTCA cleanup level for groundwater. Red = concentration exceeds MTCA cleanup level. < = not detected at a concentration exceeding the laboratory reporting limit AESI = Associated Earth Sciences, Inc. MTCA = Washington State Model Toxics Control Act CLARC = Cleanup Levels and Risk Calculation NWTPH = Northwest Total Petroleum Hydrocarbon EPA = U.S. Environmental Protection Agency WAC = Washington Administrative Code mg/kg = micrograms per kilogram 3/2/2020 1 of 3 Subsurface Site Assessment Table 3 Summary of Soil Analytical Results Volatile Organic Compounds Arlington Residential East Gilman Avenue Arlington, Washington Analytical Results [milligrams per kilogram (mg/kg)] Volatile Organic Compounds (1, 2) Exploration / Depth Well Location Sample ID Sample Date Sampled By (feet) Acetone Methylene chloride 1,2-Dibromoethane (EDB) 1,2,3-Trichloropropanep-Isopropyltoluene EB-8 EB-8-6.5 9/12/2019 AESI 6.5 < 0.5 < 0.5 < 0.05 < 0.05 < 0.05 EB-9-6.5 9/12/2019 AESI 6.5 0.52 lc < 0.5 < 0.05 < 0.05 0.18 EB-9 EB-9-12.5 9/12/2019 AESI 12.5 < 0.5 < 0.5 < 0.05 < 0.05 6.3 EB-15 EB-15-13 12/9/2019 AESI 13 < 0.5 < 0.5 < 0.05 < 0.05 < 0.05 EB-16 EB-16-10 12/9/2019 AESI 10 < 0.5 < 0.5 < 0.05 < 0.05 < 0.05 EB-17 EB-17-13 12/9/2019 AESI 13 < 0.5 < 0.5 < 0.05 < 0.05 < 0.05 EB-18 EB-18-36 12/10/2019 AESI 36 < 0.5 < 0.5 < 0.05 < 0.05 < 0.05 EB-19 EB-19-10 12/10/2019 AESI 10 < 0.5 < 0.5 < 0.05 < 0.05 < 0.05 EB-20 EB-20-13 12/10/2019 AESI 13 < 0.5 < 0.5 < 0.05 < 0.05 < 0.05 Model Toxics Control Act Cleanup Level (3) 72,000 (4) 0.02 0.005 0.033 (5) NE NOTES: (1) Samples were analyzed by Friedman & Bruya, Inc. of Seattle, Washington using EPA Method 8260C. (2) A total of 63 analytes (volatile organic compounds) were tested by EPA Method 8260C. Analytes not shown in this table were not detected at concentrations exceeding the laboratory detection limit and the laboratory detection limits are below the MTCA cleanup level for soil. (3) MTCA Method A Cleanup Level for Unrestricted Land Use (4) MTCA Cleanup Regulation, Chapter 173-340 of WAC, CLARC, Soil, Method B, Non-Carcinogen (5) MTCA Cleanup Regulation, Chapter 173-340 of WAC, CLARC, Soil, Method B, Carcinogen Bold = concentration below laboratory detection limit, but exceeding the MTCA cleanup level for soil Red = concentration exceeds MTCA cleanup level < = not detected at a concentration exceeding the laboratory reporting limit lc = The presence of the analyte is likely due to laboratory contamination. NE = not established AESI = Associated Earth Sciences, Inc. mg/kg = micrograms per kilogram CLARC = Cleanup Levels and Risk Calculation MTCA = Washingston State Model Toxics Control Act EPA = U.S. Environmental Protection Agency WAC = Washington Administrative Code 3/2/2020 2 of 3 Table 4 Subsurface Site Assessment Summary of Soil Analytical Results RCRA 8 Metals Arlington Residential East Gilman Avenue Arlington, Washington Analytical Results [milligrams per kilogram (mg/kg)] (1) Exploration / Well Location Sample ID Sampled By Sample Date Depth (feet) Arsenic Barium Cadmium Chromium Lead Mercury Selenium Silver EB-9 EB-9-12.5 AESI 9/12/2019 12.5 5.55 27.4 < 1 13.8 < 5 < 1 < 1 < 1 Model Toxics Control Act Cleanup Level (2) 20 16,000 (3) 2 2,000 250 2.00 5.20 (3) 400 (3) NOTES: (1) Sample was analyzed by Friedman & Bruya, Inc. of Seattle, Washington using EPA Method 200.8. (2) MTCA Cleanup Regulation, Chapter 173-340-900 of WAC, Table 740-1 Method A Soil Cleanup Levels for Unrestricted Land Uses. (3) MTCA Cleanup Regulation, Chapter 173-340 of WAC, CLARC, Soil, Method B, Non-Carcinogen, Standard Formula Value, CLARC Website <http://fortress.wa.gov/ecy/clarc/CLARCHome.aspx>. Bold = concentration below laboratory detection limit, but exceeding the MTCA cleanup level for groundwater. Red = concentration exceeds MTCA cleanup level. < = not detected at a concentration exceeding the laboratory reporting limit AESI = Associated Earth Sciences, Inc. MTCA = Washingston State Model Toxics Control Act CLARC = Cleanup Levels and Risk Calculation RCRA = Resource Conservation and Recovery Act EPA = Environmental Protection Agency WAC = Washington Administrative Code mg/kg = micrograms per kilogram 3/2/2020 3 of 3 Table 5 Subsurface Site Assessment Summary of Groundwater Analytical Results for BTEX and Total Petroleum Hydrocarbons Arlington Residential East Gilman Avenue Arlington, Washington Analytical Results [micrograms per liter (Âµg/L)] Volatile Petroleum Compounds (1) Total Petroleum Hydrocarbons (2) Exploration/ Sample Sample Sampled Screen Well Location ID Date By Interval (feet) Benzene Toluene Ethylbenzene Total XylenesGasoline Range HydrocarbonsDiesel Range HydrocarbonsMotor Oil Range Hydrocarbons EB-9 EB-9-GW 9/12/2019 AESI 14 < 0.35 5.2 < 1 < 2 < 200 6,900 x 2,800 x EB-10 EB-10-GW 9/12/2019 AESI 5 < 0.35 < 1 < 1 < 2 < 200 < 500 < 500 EB-11 EB-11-GW 9/12/2019 AESI 16 < 0.35 < 1 < 1 < 2 < 200 410 x 730 EB-13 EB-13-GW 9/12/2019 AESI 14 < 0.35 < 1 < 1 < 2 < 200 < 500 < 500 EB-18 EB-18-GW 12/17/2019 AESI 30-40 < 0.35 < 1 < 1 < 2 -- 92 x < 350 MW-1-20191217 12/17/2019 < 0.35 < 1 < 1 < 2 -- < 50 < 250 MW-1 AESI 4.65-14.65 MW-1-20200213 2/13/2020 < 0.35 < 1 < 1 < 2 -- < 50 < 250 MW-2-20191217 12/17/2019 < 0.35 < 1 < 1 < 2 -- < 50 < 250 MW-2 AESI 4.8-14.8 MW-2-20200213 2/13/2020 < 0.35 < 1 < 1 < 2 -- < 50 < 250 MW-3-20191217 12/17/2019 < 0.35 < 1 < 1 < 2 -- < 50 < 250 MW-3 AESI 4.95-14.95 MW-3-20200213 2/13/2020 < 0.35 < 1 < 1 < 2 -- < 50 < 250 MW-4-20191217 12/17/2019 < 0.35 < 1 < 1 < 2 -- < 50 < 250 MW-4 AESI 4.75-14.75 MW-4-20200213 2/13/2020 < 0.35 < 1 < 1 < 2 -- < 50 < 250 SEEP-20191217 12/17/2019 < 0.35 < 1 < 1 < 2 -- < 95 540 x SEEP-20191217 SEEP 12/17/2019 AESI N/A -- -- -- -- -- < 95 < 480 with silica gel SEEP-20200213 2/13/2020 < 0.35 < 1 < 1 < 2 -- < 50 < 250 Model Toxics Control Act Cleanup Level (3) 5 1,000 700 1,000 800/1,000 (4) 500 500 Notes: (1) Samples were analyzed by Friedman & Bruya, Inc. of Seattle, Washington by EPA Method 8260C or EPA Method 8260D. (2) Samples were analyzed by Friedman & Bruya, Inc. of Seattle, Washington by NWTPH Method NWTPH-Gx, NWTPH-DX, or NWTPH-HCID. (3) MTCA Cleanup Regulation, Chapter 173-340-900 of WAC, Table 720-1 Method A Cleanup Levels for Ground Water. (4) MTCA Method A Cleanup Level is 800 Âµg/L when benzene is detected and 1,000 Âµg/L when benzene is not detected. Red = concentration exceeds MTCA cleanup level Bold = concentration below laboratory detection limit, but exceeding the MTCA cleanup level for groundwater. < = not detected at a concentration exceeding the laboratory reporting limit x = The sample chromatographic pattern does not resemble the fuel standard used for quantitation AESI = Associated Earth Sciences, Inc. NWTPH = Northwest Total Petroleum Hydrocarbon CLARC = Cleanup Levels and Risk Calculation WAC = Washington Administrative Code EPA = Environmental Protection Agency Âµg/L = micrograms per Liter MTCA = Model Toxics Control Act, Chapter 173-340 WAC Table 6 Subsurface Site Assessment Summary of Groundwater Analytical Results Volatile and Semi-Volatile Organic Compounds Arlington Residential East Gilman Avenue Arlington, Washington Analytical Results [micrograms per liter (Âµg/L)] (1) Volatile Organic Compounds (2) Semi-Volatile Organic Compounds (3) Screen Exploration/ Sample Sample Sampled Interval Well Location ID Date By (feet) Carbon tetrachlorideDibromochloromethane Bromodichloromethane 1,2-Dibromoethane1,2-Dibromo-3-chloropropanetrans-1,3-DichloropropeneHexachlorobutadiene 1,1,2-Trichloroethane1,2,3-Trichloropropane1,1,2,2-Tetrachloroethanep-IsopropyltoluenePhenanthreneAnthracene Di-n-butyl phthalate Bis(2-ethylhexyl) phthalate EB-9 EB-9-GW 9/12/2019 AESI 14 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 1,500 0.031 0.052 3.0 4.2 fc EB-10 EB-10-GW 9/12/2019 AESI 5 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 EB-11 EB-11-GW 9/12/2019 AESI 16 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 EB-13 EB-13-GW 9/12/2019 AESI 14 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 EB-18 EB-18-GW 12/17/2019 AESI 30-40 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 MW-1-20191217 12/17/2019 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 MW-1 AESI 4.65-14.65 MW-1-20200213 2/13/2020 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 MW-2-20191217 12/17/2019 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 MW-2 AESI 4.8-14.8 MW-2-20200213 2/13/2020 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 MW-3-20191217 12/17/2019 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 MW-3 AESI 4.95-14.95 MW-3-20200213 2/13/2020 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 MW-4-20191217 12/17/2019 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 MW-4 AESI 4.75-14.75 MW-4-20200213 2/13/2020 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 SEEP-20191217 12/17/2019 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 SEEP AESI N/A SEEP-20200213 2/13/2020 < 1 < 1 < 1 < 1 < 10 < 1 < 1 < 1 < 1 < 1 < 1 < 0.02 < 0.02 < 2 < 3.2 Model Toxics Control Act Cleanup Level (4) 0.63 0.52 0.71 0.01 0.055 0.44 0.56 0.77 0.0015 0.22 NE NE 4,800 (5) 1,600 (5) 6.3 NOTES: (1) Samples were analyzed by Friedman & Bruya, Inc. of Seattle, Washington by EPA Method 8260C. (2) Volatile organic compounds were tested by EPA Method 8260C. Analytes not shown in this table were not detected at concentrations exceeding the laboratory detection limits. (3) Semi-volatile organic compounds were tested by EPA Method 8270D. Analytes not shown in this table were not detected at concentrations exceeding the laboratory detection limits. (4) MTCA Cleanup Regulation, Chapter 173-340 of WAC, CLARC, Groundwater, Method B, Carcinogen, Standard Formula Value, CLARC Website <http://fortress.wa.gov/ecy/clarc/CLARCHome.aspx>. (5) MTCA Cleanup Regulation, Chapter 173-340 of WAC, CLARC, Groundwater, Method B, Non-Carcinogen, Standard Formula Value, CLARC Website <http://fortress.wa.gov/ecy/clarc/CLARCHome.aspx>. Red = concentration exceeds MTCA cleanup level Bold = concentration below laboratory detection limit, but exceeding the MTCA cleanup level for groundwater < = not detected at a concentration exceeding the laboratory reporting limit NE = Not Established AESI = Associated Earth Sciences, Inc. MTCA = Model Toxics Control Act, Chapter 173-340 WAC CLARC = Cleanup Levels and Risk Calculation WAC = Washington Administrative Code EPA = Environmental Protection Agency Âµg/L = micrograms per Liter 2/28/2020 1 of 1 APPENDIX A Exploration Logs Exploration Boring Project Number Exploration Number Sheet 190211V002 EB-8 1 of 1 Project Name Arlington Residential Ground Surface Elevation (ft) Location Arlington, WA Datum NAVD 88 Driller/Equipment Cascade / HSA - Dames + Moore Date Start/Finish 9/12/19,9/12/19 Hammer Weight/Drop 140# / 30 Hole Diameter (in) ??? Blows/Foot S Well Depth (ft)T SamplesGraphicSymbol Blows/6" DESCRIPTION CompletionWater Level Other Tests 10 20 30 40 Grass / Gravel Fill Slightly moist, reddish brown, silty, gravelly, fine to medium SAND, trace cobbles; scattered organics; massive (SM). 3 S-1 4 11 EB-8:3.5 (0.0 ppm) 7 5 Vashon Recessional Outwash Slightly moist, brownish gray, very gravelly, medium SAND, trace silt; 11 S-2 blowcounts possibly overstated; poor recovery (___). 12 32 20 EB-8:6.5 (3.5 ppm) Slightly moist, brownish gray, gravelly, medium SAND, some fine sand; pulverized gravels (___). 14 S-3 Becomes brownish gray to brown, fine to medium SAND (___). 10 20 EB-8:9 (0.0 ppm) 10 Bottom of exploration boring at 9 feet No groundwater encountered. Bold = Environmental sample ID 10 (### ppm) = Photoionization detector measurement in parts per million No staining or odors encountered unless otherwise noted 15 Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) AESIBOR 190211V002.GPJ October 4, 2019 Exploration Boring Project Number Exploration Number Sheet 190211V002 EB-9 1 of 1 Project Name Arlington Residential Ground Surface Elevation (ft) Location Arlington, WA Datum NAVD 88 Driller/Equipment Cascade / HSA - Dames + Moore Date Start/Finish 9/12/19,9/12/19 Hammer Weight/Drop 140# / 30 Hole Diameter (in) ??? Blows/Foot S Well Depth (ft)T SamplesGraphicSymbol Blows/6" DESCRIPTION CompletionWater Level Other Tests 10 20 30 40 Grass / Gravel Fill Slightly moist, gray, gravelly, fine to medium SAND; scattered organics/rootlets; massive (SP). 2 S-1 1 22 Slightly moist, reddish brown, silty, fine to medium SAND, some gravel; 1 scattered organics; massive (SM). EB-9:4 (0.0 ppm) 5 As above; no odor; poor recovery. 4 S-2 5 11 6 EB-9:6.5 (11.0 ppm) Poor recovery. 3 S-3 4 99 5 EB-9:9 (4.6 ppm) 10 Slightly moist, gray brown, gravelly, silty, fine to medium SAND; scattered organics/debris (___). 3 S-4 3 66 3 EB-9:11.5 (4.1 ppm) EB-9:12.5 (11.7 ppm) Wet, gray brown, gravelly, fine to medium SAND grading to sandy, 6 S-5 GRAVEL; chemical odor noted (___). 6 13 EB-9:GW 7 Bottom of exploration boring at 14 feet Groundwater encountered at ~12.5 feet. Temporary well screen placed from 9 to 14 feet. 15 Bold = Environmental sample ID (### ppm) = Photoionization detector measurement in parts per million No staining or odors encountered unless otherwise noted Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) AESIBOR 190211V002.GPJ October 4, 2019 Exploration Boring Project Number Exploration Number Sheet 190211V002 EB-10 1 of 1 Project Name Arlington Residential Ground Surface Elevation (ft) Location Arlington, WA Datum NAVD 88 Driller/Equipment Cascade / HSA - Dames + Moore Date Start/Finish 9/12/19,9/12/19 Hammer Weight/Drop 140# / 30 Hole Diameter (in) ??? Blows/Foot S Well Depth (ft)T SamplesGraphicSymbol Blows/6" DESCRIPTION CompletionWater Level Other Tests 10 20 30 40 Grass / Gravel Fill Slightly moist, brown gray, gravelly, fine to medium SAND, some silt; scattered organics; massive (SP-SM). 2 S-1 3 66 5 Slightly moist, orangish brown, fine to medium SAND, some gravel, trace 3 silt (SP). EB-10:5.5 (0.0 ppm) 7 S-2 Becomes gray brown. 12 19 Slightly moist, gray brown, gravelly, fine to medium SAND, trace silt (SP). 5 S-3 12 27 15 EB-10:8 (0.0 ppm) Sand seam (2 inches thick). 9 S-4 12 27 15 10 EB-10:GW Wet, gray brown, gravelly, medium to coarse SAND, trace silt; slight to no odor (chemical) (SP). 12 S-5 EB-10:12.5 (0.0 ppm) 15 33 18 15 Vashon Lodgement Till 15 S-6 Slightly moist, brownish gray to gray, very silty, fine SAND, some gravel; 20 45 unsorted (SM). EB-10:15.5 (0.0 ppm) 25 Bottom of exploration boring at 16.5 feet Groundwater encountered at ~12.5 feet. Temporary well screen placed from ~10 to 15 feet. Bold = Environmental sample ID (### ppm) = Photoionization detector measurement in parts per million No staining or odors encountered unless otherwise noted Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) AESIBOR 190211V002.GPJ October 4, 2019 Exploration Boring Project Number Exploration Number Sheet 190211V002 EB-11 1 of 1 Project Name Arlington Residential Ground Surface Elevation (ft) Location Arlington, WA Datum NAVD 88 Driller/Equipment Cascade / HSA - Dames + Moore Date Start/Finish 9/12/19,9/12/19 Hammer Weight/Drop 140# / 30 Hole Diameter (in) ??? Blows/Foot S Well Depth (ft)T SamplesGraphicSymbol Blows/6" DESCRIPTION CompletionWater Level Other Tests 10 20 30 40 Grass / Gravel Fill Slightly moist, brown gray with zones of moderate oxidation, silty, fine to medium SAND, some gravel; scattered organics (SM). Vashon Recessional Outwash 9 S-1 Slightly moist, gray brown, fine to medium SAND, some gravel to gravelly, 12 28 5 trace silt (SP). 16 EB-11:5.5 (0.0 ppm) 8 S-2 14 29 Slightly moist, gray brown, gravelly, fine to medium SAND, trace silt; 15 occasional pulverized cobble/gravel (SP). 8 S-3 15 30 EB-11:8 (0.0 ppm) 15 8 S-4 12 24 12 10 EB-11:GW Very moist to wet, brown gray, gravelly, medium to coarse SAND; slight to S-5 no odor (___). 30 50/6" 5050/6" EB-11:12.5 (0.0 ppm) Vashon Lodgement Till Slightly moist, grayish brown, silty, fine SAND, some gravel; unsorted (SM). 15 Becomes gray. 20 S-6 50/6" 5050/6" Bottom of exploration boring at 16 feet Groundwater encountered at ~12.5 feet. Temporary well screen placed from ~11 to 16 feet. Bold = Environmental sample ID (### ppm) = Photoionization detector measurement in parts per million No staining or odors encountered unless otherwise noted Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) AESIBOR 190211V002.GPJ October 4, 2019 Exploration Boring Project Number Exploration Number Sheet 190211V002 EB-12 1 of 1 Project Name Arlington Residential Ground Surface Elevation (ft) Location Arlington, WA Datum NAVD 88 Driller/Equipment Cascade / HSA - Dames + Moore Date Start/Finish 9/12/19,9/12/19 Hammer Weight/Drop 140# / 30 Hole Diameter (in) ??? Blows/Foot S Well Depth (ft)T SamplesGraphicSymbol Blows/6" DESCRIPTION CompletionWater Level Other Tests 10 20 30 40 Grass / Gravel Fill Slightly moist, dark reddish brown, silty, gravelly, fine SAND, some medium sand; occasional rootlets; massive (___). 2 S-1 3 66 3 5 Vashon Recessional Outwash 2 S-2 Slightly moist, brown gray, gravelly, medium SAND, some fine sand, trace 7 17 silt (SP). 10 EB-12:6 (0.0 ppm) 7 S-3 10 22 Occasional pulverized cobble. EB-12:8.5 (0.0 ppm) 12 10 Slightly moist, brown gray, very gravelly, medium to coarse SAND; pulverized gravel/cobble in shoe; poor recovery; blowcounts likely 8 S-4 overstated (SP). 12 25 13 EB-12:11.5 (0.0 ppm) S-5 Vashon Lodgement Till - Slightly moist, brownish gray, very silty, fine 18 SAND, some gravel; unsorted; cemented (___). 30 70 Becomes gray. 40 Bottom of exploration boring at 14 feet No groundwater encountered. Temporary well screen placed from ~9 to 14 feet, no groundwater observed; let sit; dry at 15 end of day. Bold = Environmental sample ID (### ppm) = Photoionization detector measurement in parts per million No staining or odors encountered unless otherwise noted Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) AESIBOR 190211V002.GPJ October 4, 2019 Exploration Boring Project Number Exploration Number Sheet 190211V002 EB-13 1 of 1 Project Name Arlington Residential Ground Surface Elevation (ft) Location Arlington, WA Datum NAVD 88 Driller/Equipment Cascade / HSA - Dames + Moore Date Start/Finish 9/12/19,9/12/19 Hammer Weight/Drop 140# / 30 Hole Diameter (in) ??? Blows/Foot S Well Depth (ft)T SamplesGraphicSymbol Blows/6" DESCRIPTION CompletionWater Level Other Tests 10 20 30 40 Grass / Gravel Vashon Recessional Outwash Slightly moist, gray brown, gravelly, medium SAND, some fine sand, trace silt (SP). 9 S-1 14 29 15 EB-13:4 (0.0 ppm) 5 6 S-2 12 29 EB-13:6 (0.0 ppm) 17 6 S-3 7 19 12 EB-13:9 (0.0 ppm) 10 7 S-4 11 21 Occasional pulverized gravel/cobble. 10 EB-13:GW Wet, gray brown, gravelly, medium to coarse SAND, trace silt (SP). EB-13:12.5 (0.0 ppm) 17 S-5 Vashon Lodgement Till 20 47 Slightly moist, brownish gray, very silty, fine SAND, some gravel; 27 unsorted; cemented (SM). EB-13:14 (0.0 ppm) Bottom of exploration boring at 14 feet Groundwater encountered at ~12.5 feet. Temporary well screen placed from ~9 to 14 feet. 15 Bold = Environmental sample ID (### ppm) = Photoionization detector measurement in parts per million No staining or odors encountered unless otherwise noted Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) AESIBOR 190211V002.GPJ October 4, 2019 Geologic & Monitoring Well Construction Log Project Number Well Number Sheet 2019211V004 EB-15/MW-1 1 of 1 Project Name Arlington Residential Location Arlington, WA Elevation (Top of Well Casing) 126.6 ft Surface Elevation (ft) 126.92 Water Level Elevation Date Start/Finish 12/9/19,12/9/19 Drilling/Equipment Cascade / HSA Hole Diameter (in) 8.5 Hammer Weight/Drop 140# / 30" (ft) 6" Depth S Blows/ GraphicSymbol WELL CONSTRUCTION DESCRIPTION Water Level T Flush mount monument with Grass / Gravel J-cap Vashon Recessional Outwash Cement 0 to 2 feet __-inch I.D. Sch 40 PVC casing 0 to 4.65 feet Bentonite grout 2 to 4 feet Sand pack 4 to 15.5 feet 5 50/5" No recovery, driller notes pounding on gravels. EB-15 - 8 (1.1 ppm) 30 Slightly moist, brown, medium to coarse sandy, GRAVEL, trace fine 22 sand (GP). 20 __-inch I.D. Sch 40 PVC well 10 screen 0.010-inch slot width Slightly moist to moist, brown, medium to coarse sandy, GRAVEL, 4.65 to 14.65 feet trace silt, trace fine sand (GP). 30 Becomes very moist to wet. 32 33 EB-15 - 11 (0.6 ppm) Driller notes change in drilling at 12 feet. 50/6" Wet, brown, GRAVEL, some medium to coarse sand (GP). Vashon Lodgement Till Slightly moist, greenish gray, very silty, fine SAND, trace gravel; cemented (SM). EB-15 - 13 (0.6 ppm) Threaded end cap 15 50/6" Slightly moist to moist, greenish gray to gray, very silty, fine SAND, some gravel; cemented (SM). EB-15 - 15.5 (0.4 ppm) Boring terminated at 15.5 feet Well completed at 14.65 feet on 12/9/19. Groundwater encountered at ~10.5 feet. Wel tag # BLK 552 Bold = Environmental sample ID X = Environmental sample submitted for chemical analysis (### ppm) = Photoionization detector measurement in parts per million Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) NWWELL- B 20190211V004.GPJ BORING.GDT 1/7/20 Geologic & Monitoring Well Construction Log Project Number Well Number Sheet 2019211V004 EB-16/MW-2 1 of 1 Project Name Arlington Residential Location Arlington, WA Elevation (Top of Well Casing) 127.73 ft Surface Elevation (ft) 128.21 Water Level Elevation Date Start/Finish 12/9/19,12/9/19 Drilling/Equipment Cascade / HSA Hole Diameter (in) 8.5 Hammer Weight/Drop 140# / 30" (ft) 6" Depth S Blows/ GraphicSymbol WELL CONSTRUCTION DESCRIPTION Water Level T Flush mount monument Grass / Gravel Fill Cement 0 to 2 feet Cuttings exhibit silty, SAND with gravel (SM) to sandy, GRAVEL (GP). __-inch I.D. Sch 40 PVC casing 0 to 4.8 feet Bentonite 2 to 4 feet Sand pack 4 to 16 feet 5 50/4" Vashon Recessional Outwash Slightly moist, brown, medium sandy, GRAVEL, some fine to coarse sand, trace silt (GP). EB-16 - 5 (0.5 ppm) 50/6" No to poor recovery; pulverized gravel in spoon. Driller notes very gravelly, likely pounding on gravel. 10 50/6" __-inch I.D. PVC well screen Slightly moist, brown, very silty, fine SAND, some coarse sand 0.0_0-inch slot width 4.8 to (dropstones?), trace gravel; scattered pockets of black organics; 14.8 feet cemented (_____). EB-16 - 10 (0.5 ppm) 50/6" Cobble in shoe; no recovery. 15 Threaded end cap 50/3" Dry to slightly moist, gray, fine sandy, SILT, some gravel; cemented (ML). EB-16 - 15 (0.5 ppm) Well tag # BLK 553 50/5" EB-16 - 17.5 (0.2 ppm) 20 50/4" As above; poor recovery. EB-16 - 20 (0.2 ppm) Boring terminated at 20.3 feet Well completed at 14.8 feet on 12/9/19. No groundwater encountered. Bold = Environmental sample ID X = Environmental sample submitted for chemical analysis (### ppm) = Photoionization detector measurement in parts per million Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) NWWELL- B 20190211V004.GPJ BORING.GDT 1/7/20 Exploration Boring Project Number Exploration Number Sheet 2019211V004 EB-17 1 of 1 Project Name Arlington Residential Ground Surface Elevation (ft) Location Arlington, WA Datum N/A Driller/Equipment Cascade / HSA Date Start/Finish 12/9/19,12/9/19 Hammer Weight/Drop 140# / 30" Hole Diameter (in) 8.5 Blows/Foot S Well Depth (ft)T SamplesGraphicSymbol Blows/6" DESCRIPTION CompletionWater Level Other Tests 10 20 30 40 Grass / Gravel Fill Cuttings exhibit slightly moist, brown, silty, fine to medium SAND, some gravel and occasional rootlets (SM). 5 Slightly moist to moist, brown, very gravelly, medium to coarse SAND, S-1 trace fine sand (SP). 13 18 37 EB-17 - 6 (0.7 ppm) 19 30 S-2 EB-17 - 8 (0.5 ppm) 50/6" 5050/6" 10 50/6" S-3 Slightly moist to moist, brown, medium to coarse sandy, GRAVEL (GP). 5050/6" EB-17 - 10 (0.8 ppm) Moist, brown, gravelly, medium to coarse SAND, some fine sand, trace silt 33 S-4 (SP). 50/6" 5050/6" EB-17 - 13 (0.8 ppm) 15 50/6" S-5 As above; poor recovery. 5050/6" Moist, brown, gravelly, medium SAND, some fine to coarse sand, trace silt S-6 (SP). 15 30 62 EB-17 - 18 (0.7 ppm) 32 20 Slightly moist, brown, fine SAND; occasional gravel (SP). 20 S-7 EB-17 - 21.5 (0.7 ppm) 30 60 30 Slightly moist to moist, brown, gravelly, medium to coarse SAND, trace silt 30 S-8 (___). 50/6" 5050/6" EB-17 - 23 (0.4 ppm) 25 Slightly moist to moist, brown, gravelly, fine to medium SAND, trace silt 20 S-9 (___). EB-17 - 25 (0.3 ppm) 50/6" 5050/6" Bottom of exploration boring at 26 feet No groundwater encountered. Bold = Environmental sample ID X = Environmental sample submitted for chemical analysis (### ppm) = Photoionization detector measurement in parts per million Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) AESIBOR 20190211V004.GPJ January 7, 2020 Exploration Boring Project Number Exploration Number Sheet 2019211V004 EB-18 1 of 3 Project Name Arlington Residential Ground Surface Elevation (ft) Location Arlington, WA Datum N/A Driller/Equipment Cascade / HSA Date Start/Finish 12/10/19,12/10/19 Hammer Weight/Drop 140# / 30" Hole Diameter (in) 8.5 Blows/Foot S Well Depth (ft)T SamplesGraphicSymbol Blows/6" DESCRIPTION CompletionWater Level Other Tests 10 20 30 40 Grass Vashon Recessional Outwash 5 Slightly moist, gray brown, gravelly, fine to coarse SAND; very poor 19 S-1 recovery (SP). 20 43 23 Slightly moist, gray brown, very gravelly, medium to coarse SAND, some to 50/6" S-2 trace fine sand, trace silt (SP). 5050/6" EB-18 - 8 (0.2 ppm) 10 Slightly moist, brown, gravelly, medium SAND, trace fine to coarse sand (SP). EB-18 - 10.5 (0.6 ppm) 26 S-3 25 48 23 Slightly moist to moist, brown, medium to coarse sandy, GRAVEL (GP). 50/6" S-4 5050/6" EB-18 - 13 (0.7 ppm) Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) AESIBOR 20190211V004.GPJ January 7, 2020 Exploration Boring Project Number Exploration Number Sheet 2019211V004 EB-18 2 of 3 Project Name Arlington Residential Ground Surface Elevation (ft) Location Arlington, WA Datum N/A Driller/Equipment Cascade / HSA Date Start/Finish 12/10/19,12/10/19 Hammer Weight/Drop 140# / 30" Hole Diameter (in) 8.5 Blows/Foot S Well Depth (ft)T SamplesGraphicSymbol Blows/6" DESCRIPTION CompletionWater Level Other Tests 10 20 30 40 Slightly moist, brown, medium SAND, trace coarse sand (SP). 50/6" S-5 5050/6" EB-18 - 15.5 (0.6 ppm) Slightly moist, brown, gravelly, medium to coarse SAND, trace fine sand 50/6" S-6 (SP). 5050/6" EB-18 - 18 (0.6 ppm) 20 EB-18 - 21 (0.7 ppm) 20 S-7 25 55 30 25 Slightly moist, brown, medium SAND, some fine to coarse sand, trace silt; faintly stratified (___). 26 S-8 EB-18 - 26 (0.7 ppm) 50/6" 5050/6" Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) AESIBOR 20190211V004.GPJ January 7, 2020 Exploration Boring Project Number Exploration Number Sheet 2019211V004 EB-18 3 of 3 Project Name Arlington Residential Ground Surface Elevation (ft) Location Arlington, WA Datum N/A Driller/Equipment Cascade / HSA Date Start/Finish 12/10/19,12/10/19 Hammer Weight/Drop 140# / 30" Hole Diameter (in) 8.5 Blows/Foot S Well Depth (ft)T SamplesGraphicSymbol Blows/6" DESCRIPTION CompletionWater Level Other Tests 10 20 30 40 Slightly moist, brown, gravelly, medium to coarse SAND, trace fine sand (SP). EB-18 - 31 (0.6 ppm) 20 S-9 25 55 30 35 Wet, brown, medium to coarse SAND, some gravel, trace silt (___). 20 S-10 30 60 Wet, brown, fine SAND, trace gravel (SP). 30 EB-18 - 36 (0.3 ppm) EB-18 - GW 40 Possession Drift - Slightly moist, gray, very silty, fine SAND, some 50/6" S-11 gravel; cemented (___). EB-18 - 40.5 (0.9 ppm) 5050/6" Bottom of exploration boring at 40.5 feet No groundwater encountered. Temporary well screen placed 30 to 40 feet. Bold = Environmental sample ID X = Environmental sample submitted for chemical analysis (### ppm) = Photoionization detector measurement in parts per million Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) AESIBOR 20190211V004.GPJ January 7, 2020 Geologic & Monitoring Well Construction Log Project Number Well Number Sheet 2019211V004 EB-19/MW-3 1 of 1 Project Name Arlington Residential Location Arlington, WA Elevation (Top of Well Casing) 126.24 ft Surface Elevation (ft) 126.49 Water Level Elevation Date Start/Finish 12/10/19,12/10/19 Drilling/Equipment Cascade / HSA Hole Diameter (in) 8.5 Hammer Weight/Drop 140# / 30" (ft) 6" Depth S Blows/ GraphicSymbol WELL CONSTRUCTION DESCRIPTION Water Level T Flush mount monument Grass / Gravel Vashon Recessional Outwash Cement 0 to 2 feet __-inch I.D. Sch 40 PVC casing 0 to 4.95 feet Bentonite 2 to 4 feet Sand pack 4 to 16 feet 5 50/6" No recovery, driller notes pounding on gravel/cobbles. Slightly moist, gray brown, very gravelly, medium SAND, some fine 40 to coarse sand (SP). 50/5" EB-19 - 8 (0.6 ppm) 10 __-inch I.D. PVC well screen Wet, brown, medium to coarse sandy, GRAVEL, some fine sand, 0.0_0-inch slot width 4.95 to 43 trace silt (SP). 50/6" 14.95 feet EB-19 - 10 (0.3 ppm) 50/6" Wet, brown, medium SAND, some to trace coarse to fine sand (SP). EB-19 - 13 (0.4 ppm) Driller notes change in drilling at 14.5 feet. Possession Drift 15 Threaded end cap Slightly moist, gray, very silty, fine SAND, some gravel; cemented 50/6" (SM). EB-19 - 15.5 (0.4 ppm) Boring terminated at 15.5 feet Well completed at 14.95 feet on 12/10/19. Groundwater encountered at ~10 feet. Well tag # BLK 554 Bold = Environmental sample ID X = Environmental sample submitted for chemical analysis (### ppm) = Photoionization detector measurement in parts per million Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) NWWELL- B 20190211V004.GPJ BORING.GDT 1/7/20 Geologic & Monitoring Well Construction Log Project Number Well Number Sheet 2019211V004 EB-20/MW-4 1 of 1 Project Name Arlington Residential Location Arlington, WA Elevation (Top of Well Casing) 128.25 ft Surface Elevation (ft) 128.48 Water Level Elevation Date Start/Finish 12/10/19,12/10/19 Drilling/Equipment Cascade / HSA Hole Diameter (in) 8.5 Hammer Weight/Drop 140# / 30" (ft) 6" Depth S Blows/ GraphicSymbol WELL CONSTRUCTION DESCRIPTION Water Level T Flush mount monument Grass / Gravel Vashon Recessional Outwash Cement 0 to 2 feet __-inch I.D. Sch 40 PVC casing 0 to 4.75 feet Bentonite 2 to 4 feet Sand pack 4 to 15.5 feet 5 Slightly moist, brown, gravelly, medium SAND (SP). 20 50/5" EB-20 - 6 (0.6 ppm) 10 Slightly moist, brown, gravelly, medium to coarse SAND, some fine 20 sand (SP). 50/6" EB-20 - 11 (0.2 ppm) __-inch I.D. PVC well screen 0.0_0-inch slot width 4.75 to 14.75 feet 50/6" Wet, brown, gravelly, medium to coarse SAND (SP). EB-20 - 13 (0.4 ppm) Driller notes harder drilling at 14.5 feet. Threaded end cap 15 Slightly moist to moist, greenish gray, very silty, fine SAND, some 50/6" gravel; wet at top of sampler (SM). EB-20 - 15.5 (0.3 ppm) Boring terminated at 15.5 feet Well completed at 14.75 feet on 12/10/19. Groundwater encountered at ~12.5 feet. Well tag # BLK 356 Bold = Environmental sample ID X = Environmental sample submitted for chemical analysis (### ppm) = Photoionization detector measurement in parts per million Sampler Type (ST): 2" OD Split Spoon Sampler (SPT) No Recovery M - Moisture Logged by: KMA 3" OD Split Spoon Sampler (D & M) Ring Sample Water Level () Approved by: TSB Grab Sample Shelby Tube Sample Water Level at time of drilling (ATD) NWWELL- B 20190211V004.GPJ BORING.GDT 1/7/20 APPENDIX B Laboratory Reports and Chain of Custody Forms FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. 3012 16th Avenue West Yelena Aravkina, M.S. Seattle, WA 98119-2029 Michael Erdahl, B.S. (206) 285-8282 Arina Podnozova, B.S. fbi@isomedia.com Eric Young, B.S. www.friedmanandbruya.com December 24, 2019 Ken Jennings, Project Manager Associated Earth Sciences, Inc. 911 5th Avenue, Suite 100 Kirkland, WA 98033 Dear Mr Jennings: Included are the results from the testing of material submitted on December 11, 2019 from the Arlington Residential 190211V001, F&BI 912180 project. There are 18 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days, or as directed by the Chain of Custody document. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures c: Kellie Andrews AE11224R.DOC FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on December 11, 2019 by Friedman & Bruya, Inc. from the Associated Earth Sciences Arlington Residential 190211V001, F&BI 912180 project. Samples were logged in under the laboratory IDâ€™s listed below. Laboratory ID Associated Earth Sciences 912180 -01 EB-18-8 912180 -02 EB-18-10.5 912180 -03 EB-18-13 912180 -04 EB-18-15.5 912180 -05 EB-18-18 912180 -06 EB-18-21 912180 -07 EB-18-26 912180 -08 EB-18-31 912180 -09 EB-18-36 912180 -10 EB-18-40.5 912180 -11 EB-19-8 912180 -12 EB-19-10 912180 -13 EB-19-13 912180 -14 EB-19-15.5 912180 -15 EB-20-6 912180 -16 EB-20-11 912180 -17 EB-20-13 912180 -18 EB-20-15.5 Hexachloroethane in the 8270D laboratory control sample failed the acceptance criteria. The data were flagged accordingly. Several compounds in the 8260C laboratory control sample exceeded the acceptance criteria. The analytes were not detected in the samples, therefore the data were acceptable. All other quality control requirements were acceptable. 1 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/11/19 Project: Arlington Residential 190211V001, F&BI 912180 Date Extracted: 12/18/19 Date Analyzed: 12/18/19 RESULTS FROM THE ANALYSIS OF SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS GASOLINE USING METHOD NWTPH-Gx Results Reported on a Dry Weight Basis Results Reported as mg/kg (ppm) Surrogate Sample ID Gasoline Range (% Recovery) Laboratory ID (Limit 50-150) EB-18-36 <5 84 912180-09 EB-19-10 <5 83 912180-12 EB-20-13 <5 84 912180-17 Method Blank <5 77 09-2931 MB 2 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/11/19 Project: Arlington Residential 190211V001, F&BI 912180 Date Extracted: 12/18/19 Date Analyzed: 12/18/19 RESULTS FROM THE ANALYSIS OF SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL AND MOTOR OIL USING METHOD NWTPH-Dx Results Reported on a Dry Weight Basis Results Reported as mg/kg (ppm) Surrogate Sample ID Diesel Range Motor Oil Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 56-165) EB-18-36 <50 <250 78 912180-09 EB-19-10 <50 <250 76 912180-12 EB-20-13 <50 <250 85 912180-17 Method Blank <50 <250 78 09-3053 MB 3 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-18-36 Client: Associated Earth Sciences Date Received: 12/11/19 Project: Arlington Residential 190211V001 Date Extracted: 12/18/19 Lab ID: 912180-09 1/5 Date Analyzed: 12/18/19 Data File: 121813.D Matrix: Soil Instrument: GCMS8 Units: mg/kg (ppm) Dry Weight Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 78 50 150 Phenol-d6 85 50 150 Nitrobenzene-d5 82 50 150 2-Fluorobiphenyl 86 50 150 2,4,6-Tribromophenol 88 50 150 Terphenyl-d14 88 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Phenol <0.5 2,6-Dinitrotoluene <0.25 Bis(2-chloroethyl) ether <0.05 3-Nitroaniline <5 2-Chlorophenol <0.5 Acenaphthene <0.01 1,3-Dichlorobenzene <0.05 2,4-Dinitrophenol <1.5 1,4-Dichlorobenzene <0.05 Dibenzofuran <0.05 1,2-Dichlorobenzene <0.05 2,4-Dinitrotoluene <0.25 Benzyl alcohol <0.5 4-Nitrophenol <1.5 2,2â€™-Oxybis(1-chloropropane) <0.05 Diethyl phthalate <0.5 2-Methylphenol <0.5 Fluorene <0.01 Hexachloroethane <0.05 jl 4-Chlorophenyl phenyl ether <0.05 N-Nitroso-di-n-propylamine <0.05 N-Nitrosodiphenylamine <0.05 3-Methylphenol + 4-Methylphenol <1 4-Nitroaniline <5 Nitrobenzene <0.05 4,6-Dinitro-2-methylphenol <1.5 Isophorone <0.05 4-Bromophenyl phenyl ether <0.05 2-Nitrophenol <0.5 Hexachlorobenzene <0.05 2,4-Dimethylphenol <0.5 Pentachlorophenol <0.25 Benzoic acid <2.5 Phenanthrene <0.01 Bis(2-chloroethoxy)methane <0.05 Anthracene <0.01 2,4-Dichlorophenol <0.5 Carbazole <0.05 1,2,4-Trichlorobenzene <0.05 Di-n-butyl phthalate <0.5 Naphthalene <0.01 Fluoranthene <0.01 Hexachlorobutadiene <0.05 Pyrene <0.01 4-Chloroaniline <5 Benzyl butyl phthalate <0.5 4-Chloro-3-methylphenol <0.5 Benz(a)anthracene <0.01 2-Methylnaphthalene <0.01 Chrysene <0.01 1-Methylnaphthalene <0.01 Bis(2-ethylhexyl) phthalate <0.8 Hexachlorocyclopentadiene <0.15 Di-n-octyl phthalate <0.5 2,4,6-Trichlorophenol <0.5 Benzo(a)pyrene <0.01 2,4,5-Trichlorophenol <0.5 Benzo(b)fluoranthene <0.01 2-Chloronaphthalene <0.05 Benzo(k)fluoranthene <0.01 2-Nitroaniline <0.25 Indeno(1,2,3-cd)pyrene <0.01 Dimethyl phthalate <0.5 Dibenz(a,h)anthracene <0.01 Acenaphthylene <0.01 Benzo(g,h,i)perylene <0.01 4 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-19-10 Client: Associated Earth Sciences Date Received: 12/11/19 Project: Arlington Residential 190211V001 Date Extracted: 12/18/19 Lab ID: 912180-12 1/5 Date Analyzed: 12/18/19 Data File: 121814.D Matrix: Soil Instrument: GCMS8 Units: mg/kg (ppm) Dry Weight Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 80 50 150 Phenol-d6 87 50 150 Nitrobenzene-d5 83 50 150 2-Fluorobiphenyl 87 50 150 2,4,6-Tribromophenol 88 50 150 Terphenyl-d14 87 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Phenol <0.5 2,6-Dinitrotoluene <0.25 Bis(2-chloroethyl) ether <0.05 3-Nitroaniline <5 2-Chlorophenol <0.5 Acenaphthene <0.01 1,3-Dichlorobenzene <0.05 2,4-Dinitrophenol <1.5 1,4-Dichlorobenzene <0.05 Dibenzofuran <0.05 1,2-Dichlorobenzene <0.05 2,4-Dinitrotoluene <0.25 Benzyl alcohol <0.5 4-Nitrophenol <1.5 2,2â€™-Oxybis(1-chloropropane) <0.05 Diethyl phthalate <0.5 2-Methylphenol <0.5 Fluorene <0.01 Hexachloroethane <0.05 jl 4-Chlorophenyl phenyl ether <0.05 N-Nitroso-di-n-propylamine <0.05 N-Nitrosodiphenylamine <0.05 3-Methylphenol + 4-Methylphenol <1 4-Nitroaniline <5 Nitrobenzene <0.05 4,6-Dinitro-2-methylphenol <1.5 Isophorone <0.05 4-Bromophenyl phenyl ether <0.05 2-Nitrophenol <0.5 Hexachlorobenzene <0.05 2,4-Dimethylphenol <0.5 Pentachlorophenol <0.25 Benzoic acid <2.5 Phenanthrene <0.01 Bis(2-chloroethoxy)methane <0.05 Anthracene <0.01 2,4-Dichlorophenol <0.5 Carbazole <0.05 1,2,4-Trichlorobenzene <0.05 Di-n-butyl phthalate <0.5 Naphthalene <0.01 Fluoranthene <0.01 Hexachlorobutadiene <0.05 Pyrene <0.01 4-Chloroaniline <5 Benzyl butyl phthalate <0.5 4-Chloro-3-methylphenol <0.5 Benz(a)anthracene <0.01 2-Methylnaphthalene <0.01 Chrysene <0.01 1-Methylnaphthalene <0.01 Bis(2-ethylhexyl) phthalate <0.8 Hexachlorocyclopentadiene <0.15 Di-n-octyl phthalate <0.5 2,4,6-Trichlorophenol <0.5 Benzo(a)pyrene <0.01 2,4,5-Trichlorophenol <0.5 Benzo(b)fluoranthene <0.01 2-Chloronaphthalene <0.05 Benzo(k)fluoranthene <0.01 2-Nitroaniline <0.25 Indeno(1,2,3-cd)pyrene <0.01 Dimethyl phthalate <0.5 Dibenz(a,h)anthracene <0.01 Acenaphthylene <0.01 Benzo(g,h,i)perylene <0.01 5 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-20-13 Client: Associated Earth Sciences Date Received: 12/11/19 Project: Arlington Residential 190211V001 Date Extracted: 12/18/19 Lab ID: 912180-17 1/5 Date Analyzed: 12/19/19 Data File: 121913.D Matrix: Soil Instrument: GCMS8 Units: mg/kg (ppm) Dry Weight Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 82 50 150 Phenol-d6 87 50 150 Nitrobenzene-d5 87 50 150 2-Fluorobiphenyl 89 50 150 2,4,6-Tribromophenol 79 50 150 Terphenyl-d14 90 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Phenol <0.5 2,6-Dinitrotoluene <0.25 Bis(2-chloroethyl) ether <0.05 3-Nitroaniline <5 2-Chlorophenol <0.5 Acenaphthene <0.01 1,3-Dichlorobenzene <0.05 2,4-Dinitrophenol <1.5 1,4-Dichlorobenzene <0.05 Dibenzofuran <0.05 1,2-Dichlorobenzene <0.05 2,4-Dinitrotoluene <0.25 Benzyl alcohol <0.5 4-Nitrophenol <1.5 2,2â€™-Oxybis(1-chloropropane) <0.05 Diethyl phthalate <0.5 2-Methylphenol <0.5 Fluorene <0.01 Hexachloroethane <0.05 jl 4-Chlorophenyl phenyl ether <0.05 N-Nitroso-di-n-propylamine <0.05 N-Nitrosodiphenylamine <0.05 3-Methylphenol + 4-Methylphenol <1 4-Nitroaniline <5 Nitrobenzene <0.05 4,6-Dinitro-2-methylphenol <1.5 Isophorone <0.05 4-Bromophenyl phenyl ether <0.05 2-Nitrophenol <0.5 Hexachlorobenzene <0.05 2,4-Dimethylphenol <0.5 Pentachlorophenol <0.25 Benzoic acid <2.5 Phenanthrene <0.01 Bis(2-chloroethoxy)methane <0.05 Anthracene <0.01 2,4-Dichlorophenol <0.5 Carbazole <0.05 1,2,4-Trichlorobenzene <0.05 Di-n-butyl phthalate <0.5 Naphthalene <0.01 Fluoranthene <0.01 Hexachlorobutadiene <0.05 Pyrene <0.01 4-Chloroaniline <5 Benzyl butyl phthalate <0.5 4-Chloro-3-methylphenol <0.5 Benz(a)anthracene <0.01 2-Methylnaphthalene <0.01 Chrysene <0.01 1-Methylnaphthalene <0.01 Bis(2-ethylhexyl) phthalate <0.8 Hexachlorocyclopentadiene <0.15 Di-n-octyl phthalate <0.5 2,4,6-Trichlorophenol <0.5 Benzo(a)pyrene <0.01 2,4,5-Trichlorophenol <0.5 Benzo(b)fluoranthene <0.01 2-Chloronaphthalene <0.05 Benzo(k)fluoranthene <0.01 2-Nitroaniline <0.25 Indeno(1,2,3-cd)pyrene <0.01 Dimethyl phthalate <0.5 Dibenz(a,h)anthracene <0.01 Acenaphthylene <0.01 Benzo(g,h,i)perylene <0.01 6 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V001 Date Extracted: 12/18/19 Lab ID: 09-3054 mb Date Analyzed: 12/18/19 Data File: 121809.D Matrix: Soil Instrument: GCMS8 Units: mg/kg (ppm) Dry Weight Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 80 50 150 Phenol-d6 89 50 150 Nitrobenzene-d5 86 50 150 2-Fluorobiphenyl 92 50 150 2,4,6-Tribromophenol 95 50 150 Terphenyl-d14 93 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Phenol <0.1 2,6-Dinitrotoluene <0.05 Bis(2-chloroethyl) ether <0.01 3-Nitroaniline <1 2-Chlorophenol <0.1 Acenaphthene <0.002 1,3-Dichlorobenzene <0.01 2,4-Dinitrophenol <0.3 1,4-Dichlorobenzene <0.01 Dibenzofuran <0.01 1,2-Dichlorobenzene <0.01 2,4-Dinitrotoluene <0.05 Benzyl alcohol <0.1 4-Nitrophenol <0.3 2,2â€™-Oxybis(1-chloropropane) <0.01 Diethyl phthalate <0.1 2-Methylphenol <0.1 Fluorene <0.002 Hexachloroethane <0.01 jl 4-Chlorophenyl phenyl ether <0.01 N-Nitroso-di-n-propylamine <0.01 N-Nitrosodiphenylamine <0.01 3-Methylphenol + 4-Methylphenol <0.2 4-Nitroaniline <1 Nitrobenzene <0.01 4,6-Dinitro-2-methylphenol <0.3 Isophorone <0.01 4-Bromophenyl phenyl ether <0.01 2-Nitrophenol <0.1 Hexachlorobenzene <0.01 2,4-Dimethylphenol <0.1 Pentachlorophenol <0.05 Benzoic acid <0.5 Phenanthrene <0.002 Bis(2-chloroethoxy)methane <0.01 Anthracene <0.002 2,4-Dichlorophenol <0.1 Carbazole <0.01 1,2,4-Trichlorobenzene <0.01 Di-n-butyl phthalate <0.1 Naphthalene <0.002 Fluoranthene <0.002 Hexachlorobutadiene <0.01 Pyrene <0.002 4-Chloroaniline <1 Benzyl butyl phthalate <0.1 4-Chloro-3-methylphenol <0.1 Benz(a)anthracene <0.002 2-Methylnaphthalene <0.002 Chrysene <0.002 1-Methylnaphthalene <0.002 Bis(2-ethylhexyl) phthalate <0.16 Hexachlorocyclopentadiene <0.03 Di-n-octyl phthalate <0.1 2,4,6-Trichlorophenol <0.1 Benzo(a)pyrene <0.002 2,4,5-Trichlorophenol <0.1 Benzo(b)fluoranthene <0.002 2-Chloronaphthalene <0.01 Benzo(k)fluoranthene <0.002 2-Nitroaniline <0.05 Indeno(1,2,3-cd)pyrene <0.002 Dimethyl phthalate <0.1 Dibenz(a,h)anthracene <0.002 Acenaphthylene <0.002 Benzo(g,h,i)perylene <0.002 7 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-18-36 Client: Associated Earth Sciences Date Received: 12/11/19 Project: Arlington Residential 190211V001 Date Extracted: 12/17/19 Lab ID: 912180-09 Date Analyzed: 12/18/19 Data File: 121821.D Matrix: Soil Instrument: GCMS4 Units: mg/kg (ppm) Dry Weight Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 101 62 145 Toluene-d8 101 55 145 4-Bromofluorobenzene 98 65 139 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.5 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Hexane <0.25 o-Xylene <0.05 Methylene chloride <0.5 Styrene <0.05 Methyl t-butyl ether (MTBE) <0.05 Isopropylbenzene <0.05 trans-1,2-Dichloroethene <0.05 Bromoform <0.05 1,1-Dichloroethane <0.05 n-Propylbenzene <0.05 2,2-Dichloropropane <0.05 Bromobenzene <0.05 cis-1,2-Dichloroethene <0.05 1,3,5-Trimethylbenzene <0.05 Chloroform <0.05 1,1,2,2-Tetrachloroethane <0.05 2-Butanone (MEK) <0.5 1,2,3-Trichloropropane <0.05 1,2-Dichloroethane (EDC) <0.05 2-Chlorotoluene <0.05 1,1,1-Trichloroethane <0.05 4-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 tert-Butylbenzene <0.05 Carbon tetrachloride <0.05 1,2,4-Trimethylbenzene <0.05 Benzene <0.03 sec-Butylbenzene <0.05 Trichloroethene <0.02 p-Isopropyltoluene <0.05 1,2-Dichloropropane <0.05 1,3-Dichlorobenzene <0.05 Bromodichloromethane <0.05 1,4-Dichlorobenzene <0.05 Dibromomethane <0.05 1,2-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dibromo-3-chloropropane <0.5 cis-1,3-Dichloropropene <0.05 1,2,4-Trichlorobenzene <0.25 Toluene <0.05 Hexachlorobutadiene <0.25 trans-1,3-Dichloropropene <0.05 Naphthalene <0.05 1,1,2-Trichloroethane <0.05 1,2,3-Trichlorobenzene <0.25 2-Hexanone <0.5 8 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-19-10 Client: Associated Earth Sciences Date Received: 12/11/19 Project: Arlington Residential 190211V001 Date Extracted: 12/17/19 Lab ID: 912180-12 Date Analyzed: 12/18/19 Data File: 121822.D Matrix: Soil Instrument: GCMS4 Units: mg/kg (ppm) Dry Weight Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 100 62 145 Toluene-d8 100 55 145 4-Bromofluorobenzene 100 65 139 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.5 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Hexane <0.25 o-Xylene <0.05 Methylene chloride <0.5 Styrene <0.05 Methyl t-butyl ether (MTBE) <0.05 Isopropylbenzene <0.05 trans-1,2-Dichloroethene <0.05 Bromoform <0.05 1,1-Dichloroethane <0.05 n-Propylbenzene <0.05 2,2-Dichloropropane <0.05 Bromobenzene <0.05 cis-1,2-Dichloroethene <0.05 1,3,5-Trimethylbenzene <0.05 Chloroform <0.05 1,1,2,2-Tetrachloroethane <0.05 2-Butanone (MEK) <0.5 1,2,3-Trichloropropane <0.05 1,2-Dichloroethane (EDC) <0.05 2-Chlorotoluene <0.05 1,1,1-Trichloroethane <0.05 4-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 tert-Butylbenzene <0.05 Carbon tetrachloride <0.05 1,2,4-Trimethylbenzene <0.05 Benzene <0.03 sec-Butylbenzene <0.05 Trichloroethene <0.02 p-Isopropyltoluene <0.05 1,2-Dichloropropane <0.05 1,3-Dichlorobenzene <0.05 Bromodichloromethane <0.05 1,4-Dichlorobenzene <0.05 Dibromomethane <0.05 1,2-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dibromo-3-chloropropane <0.5 cis-1,3-Dichloropropene <0.05 1,2,4-Trichlorobenzene <0.25 Toluene <0.05 Hexachlorobutadiene <0.25 trans-1,3-Dichloropropene <0.05 Naphthalene <0.05 1,1,2-Trichloroethane <0.05 1,2,3-Trichlorobenzene <0.25 2-Hexanone <0.5 9 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-20-13 Client: Associated Earth Sciences Date Received: 12/11/19 Project: Arlington Residential 190211V001 Date Extracted: 12/18/19 Lab ID: 912180-17 Date Analyzed: 12/18/19 Data File: 121823.D Matrix: Soil Instrument: GCMS4 Units: mg/kg (ppm) Dry Weight Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 101 62 145 Toluene-d8 101 55 145 4-Bromofluorobenzene 99 65 139 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.5 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Hexane <0.25 o-Xylene <0.05 Methylene chloride <0.5 Styrene <0.05 Methyl t-butyl ether (MTBE) <0.05 Isopropylbenzene <0.05 trans-1,2-Dichloroethene <0.05 Bromoform <0.05 1,1-Dichloroethane <0.05 n-Propylbenzene <0.05 2,2-Dichloropropane <0.05 Bromobenzene <0.05 cis-1,2-Dichloroethene <0.05 1,3,5-Trimethylbenzene <0.05 Chloroform <0.05 1,1,2,2-Tetrachloroethane <0.05 2-Butanone (MEK) <0.5 1,2,3-Trichloropropane <0.05 1,2-Dichloroethane (EDC) <0.05 2-Chlorotoluene <0.05 1,1,1-Trichloroethane <0.05 4-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 tert-Butylbenzene <0.05 Carbon tetrachloride <0.05 1,2,4-Trimethylbenzene <0.05 Benzene <0.03 sec-Butylbenzene <0.05 Trichloroethene <0.02 p-Isopropyltoluene <0.05 1,2-Dichloropropane <0.05 1,3-Dichlorobenzene <0.05 Bromodichloromethane <0.05 1,4-Dichlorobenzene <0.05 Dibromomethane <0.05 1,2-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dibromo-3-chloropropane <0.5 cis-1,3-Dichloropropene <0.05 1,2,4-Trichlorobenzene <0.25 Toluene <0.05 Hexachlorobutadiene <0.25 trans-1,3-Dichloropropene <0.05 Naphthalene <0.05 1,1,2-Trichloroethane <0.05 1,2,3-Trichlorobenzene <0.25 2-Hexanone <0.5 10 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V001 Date Extracted: 12/17/19 Lab ID: 09-3057 mb Date Analyzed: 12/18/19 Data File: 121809.D Matrix: Soil Instrument: GCMS9 Units: mg/kg (ppm) Dry Weight Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 100 50 150 Toluene-d8 99 50 150 4-Bromofluorobenzene 105 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.5 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 ca Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Hexane <0.25 o-Xylene <0.05 Methylene chloride <0.5 Styrene <0.05 Methyl t-butyl ether (MTBE) <0.05 Isopropylbenzene <0.05 trans-1,2-Dichloroethene <0.05 Bromoform <0.05 1,1-Dichloroethane <0.05 n-Propylbenzene <0.05 2,2-Dichloropropane <0.05 ca Bromobenzene <0.05 cis-1,2-Dichloroethene <0.05 1,3,5-Trimethylbenzene <0.05 Chloroform <0.05 1,1,2,2-Tetrachloroethane <0.05 2-Butanone (MEK) <0.5 1,2,3-Trichloropropane <0.05 1,2-Dichloroethane (EDC) <0.05 2-Chlorotoluene <0.05 1,1,1-Trichloroethane <0.05 4-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 tert-Butylbenzene <0.05 Carbon tetrachloride <0.05 1,2,4-Trimethylbenzene <0.05 Benzene <0.03 sec-Butylbenzene <0.05 Trichloroethene <0.02 p-Isopropyltoluene <0.05 1,2-Dichloropropane <0.05 1,3-Dichlorobenzene <0.05 Bromodichloromethane <0.05 1,4-Dichlorobenzene <0.05 Dibromomethane <0.05 1,2-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dibromo-3-chloropropane <0.5 cis-1,3-Dichloropropene <0.05 1,2,4-Trichlorobenzene <0.25 Toluene <0.05 Hexachlorobutadiene <0.25 trans-1,3-Dichloropropene <0.05 Naphthalene <0.05 1,1,2-Trichloroethane <0.05 1,2,3-Trichlorobenzene <0.25 2-Hexanone <0.5 11 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/11/19 Project: Arlington Residential 190211V001, F&BI 912180 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR TPH AS GASOLINE USING METHOD NWTPH-Gx Laboratory Code: 912263-01 (Duplicate) Sample Duplicate Reporting Result Result RPD Analyte Units (Wet Wt) (Wet Wt) (Limit 20) Gasoline mg/kg (ppm) <5 <5 nm Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Analyte Units Level LCS Criteria Gasoline mg/kg (ppm) 20 80 71-131 12 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/11/19 Project: Arlington Residential 190211V001, F&BI 912180 QUALITY ASSURANCE RESULTS FROM THE ANALYSIS OF SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL EXTENDED USING METHOD NWTPH-Dx Laboratory Code: 912180-09 (Matrix Spike) Sample Percent Percent Reporting Spike Result Recovery Recovery Acceptance RPD Analyte Units Level (Wet Wt) MS MSD Criteria (Limit 20) Diesel Extended mg/kg (ppm) 5,000 <50 86 88 63-146 2 Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Analyte Units Level LCS Criteria Diesel Extended mg/kg (ppm) 5,000 86 79-144 13 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/11/19 Project: Arlington Residential 190211V001, F&BI 912180 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR SEMIVOLATILES BY EPA METHOD 8270D Laboratory Code: 912146-03 (Matrix Spike) Sample Percent Reporting Spike Result Recovery Acceptance Analyte Units Level (Wet wt) MS Criteria Phenol mg/kg (ppm) 0.33 <0.1 68 50-150 Bis(2-chloroethyl) ether mg/kg (ppm) 0.33 <0.01 60 50-150 2-Chlorophenol mg/kg (ppm) 0.33 <0.1 63 50-150 1,3-Dichlorobenzene mg/kg (ppm) 0.33 <0.01 56 50-150 1,4-Dichlorobenzene mg/kg (ppm) 0.33 <0.01 56 50-150 1,2-Dichlorobenzene mg/kg (ppm) 0.33 <0.01 57 50-150 Benzyl alcohol mg/kg (ppm) 0.66 <0.1 72 50-150 2,2'-Oxybis(1-chloropropane) mg/kg (ppm) 0.33 <0.01 63 50-150 2-Methylphenol mg/kg (ppm) 0.33 <0.1 65 50-150 Hexachloroethane mg/kg (ppm) 0.33 <0.01 58 50-150 N-Nitroso-di-n-propylamine mg/kg (ppm) 0.33 <0.01 71 50-150 3-Methylphenol + 4-Methylphenol mg/kg (ppm) 0.33 <0.2 69 50-150 Nitrobenzene mg/kg (ppm) 0.33 <0.01 62 50-150 Isophorone mg/kg (ppm) 0.33 <0.01 69 50-150 2-Nitrophenol mg/kg (ppm) 0.33 <0.1 77 50-150 2,4-Dimethylphenol mg/kg (ppm) 0.33 <0.1 67 50-150 Benzoic acid mg/kg (ppm) 0.5 <0.5 51 50-150 Bis(2-chloroethoxy)methane mg/kg (ppm) 0.33 <0.01 66 50-150 2,4-Dichlorophenol mg/kg (ppm) 0.33 <0.1 66 50-150 1,2,4-Trichlorobenzene mg/kg (ppm) 0.33 <0.01 61 50-150 Naphthalene mg/kg (ppm) 0.33 <0.002 62 50-150 Hexachlorobutadiene mg/kg (ppm) 0.33 <0.01 58 50-150 4-Chloroaniline mg/kg (ppm) 0.66 <1 55 50-150 4-Chloro-3-methylphenol mg/kg (ppm) 0.33 <0.1 75 50-150 2-Methylnaphthalene mg/kg (ppm) 0.33 <0.002 66 50-150 1-Methylnaphthalene mg/kg (ppm) 0.33 <0.002 66 50-150 Hexachlorocyclopentadiene mg/kg (ppm) 0.33 <0.03 73 50-150 2,4,6-Trichlorophenol mg/kg (ppm) 0.33 <0.1 71 50-150 2,4,5-Trichlorophenol mg/kg (ppm) 0.33 <0.1 74 50-150 2-Chloronaphthalene mg/kg (ppm) 0.33 <0.01 67 50-150 2-Nitroaniline mg/kg (ppm) 0.66 <0.05 77 50-150 Dimethyl phthalate mg/kg (ppm) 0.33 <0.1 80 50-150 Acenaphthylene mg/kg (ppm) 0.33 <0.002 77 50-150 2,6-Dinitrotoluene mg/kg (ppm) 0.33 <0.05 80 50-150 3-Nitroaniline mg/kg (ppm) 0.66 <1 65 50-150 Acenaphthene mg/kg (ppm) 0.33 <0.002 72 50-150 2,4-Dinitrophenol mg/kg (ppm) 0.33 <0.3 78 50-150 Dibenzofuran mg/kg (ppm) 0.33 <0.01 75 50-150 2,4-Dinitrotoluene mg/kg (ppm) 0.33 <0.05 77 50-150 4-Nitrophenol mg/kg (ppm) 0.33 <0.3 84 50-150 Diethyl phthalate mg/kg (ppm) 0.33 <0.1 80 50-150 Fluorene mg/kg (ppm) 0.33 <0.002 78 50-150 4-Chlorophenyl phenyl ether mg/kg (ppm) 0.33 <0.01 74 50-150 N-Nitrosodiphenylamine mg/kg (ppm) 0.33 <0.01 75 50-150 4-Nitroaniline mg/kg (ppm) 0.66 <1 68 50-150 4,6-Dinitro-2-methylphenol mg/kg (ppm) 0.33 <0.3 90 50-150 4-Bromophenyl phenyl ether mg/kg (ppm) 0.33 <0.01 78 50-150 Hexachlorobenzene mg/kg (ppm) 0.33 <0.01 76 50-150 Pentachlorophenol mg/kg (ppm) 0.33 <0.05 84 50-150 Phenanthrene mg/kg (ppm) 0.33 <0.002 78 50-150 Anthracene mg/kg (ppm) 0.33 <0.002 76 50-150 Carbazole mg/kg (ppm) 0.33 <0.01 86 50-150 Di-n-butyl phthalate mg/kg (ppm) 0.33 <0.1 87 50-150 Fluoranthene mg/kg (ppm) 0.33 <0.002 84 50-150 Pyrene mg/kg (ppm) 0.33 <0.002 82 50-150 Benzyl butyl phthalate mg/kg (ppm) 0.33 <0.1 95 50-150 Benz(a)anthracene mg/kg (ppm) 0.33 <0.002 80 50-150 Chrysene mg/kg (ppm) 0.33 <0.002 80 50-150 Bis(2-ethylhexyl) phthalate mg/kg (ppm) 0.33 <0.16 86 50-150 Di-n-octyl phthalate mg/kg (ppm) 0.33 <0.1 95 50-150 Benzo(a)pyrene mg/kg (ppm) 0.33 <0.002 74 50-150 Benzo(b)fluoranthene mg/kg (ppm) 0.33 <0.002 73 50-150 Benzo(k)fluoranthene mg/kg (ppm) 0.33 <0.002 70 50-150 Indeno(1,2,3-cd)pyrene mg/kg (ppm) 0.33 <0.002 69 50-150 Dibenz(a,h)anthracene mg/kg (ppm) 0.33 <0.002 69 50-150 Benzo(g,h,i)perylene mg/kg (ppm) 0.33 <0.002 67 50-150 14 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/11/19 Project: Arlington Residential 190211V001, F&BI 912180 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR SEMIVOLATILES BY EPA METHOD 8270D Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Phenol mg/kg (ppm) 0.33 85 90 70-130 6 Bis(2-chloroethyl) ether mg/kg (ppm) 0.33 75 81 70-130 8 2-Chlorophenol mg/kg (ppm) 0.33 78 85 70-130 9 1,3-Dichlorobenzene mg/kg (ppm) 0.33 68 72 62-115 6 1,4-Dichlorobenzene mg/kg (ppm) 0.33 66 74 63-114 11 1,2-Dichlorobenzene mg/kg (ppm) 0.66 70 74 68-113 6 Benzyl alcohol mg/kg (ppm) 0.33 91 97 70-130 6 2,2'-Oxybis(1-chloropropane) mg/kg (ppm) 0.33 78 83 70-130 6 2-Methylphenol mg/kg (ppm) 0.33 83 88 70-130 6 Hexachloroethane mg/kg (ppm) 0.33 69 vo 76 70-130 10 N-Nitroso-di-n-propylamine mg/kg (ppm) 0.33 88 97 70-130 10 3-Methylphenol + 4-Methylphenol mg/kg (ppm) 0.33 86 93 70-130 8 Nitrobenzene mg/kg (ppm) 0.33 78 83 70-130 6 Isophorone mg/kg (ppm) 0.33 83 92 70-130 10 2-Nitrophenol mg/kg (ppm) 0.33 91 98 70-130 7 2,4-Dimethylphenol mg/kg (ppm) 0.33 81 87 58-118 7 Benzoic acid mg/kg (ppm) 0.5 107 122 61-153 13 Bis(2-chloroethoxy)methane mg/kg (ppm) 0.33 82 86 70-130 5 2,4-Dichlorophenol mg/kg (ppm) 0.33 82 89 70-130 8 1,2,4-Trichlorobenzene mg/kg (ppm) 0.33 72 78 70-130 8 Naphthalene mg/kg (ppm) 0.33 74 78 70-130 5 Hexachlorobutadiene mg/kg (ppm) 0.33 72 76 70-130 5 4-Chloroaniline mg/kg (ppm) 0.66 49 39 10-90 23 vo 4-Chloro-3-methylphenol mg/kg (ppm) 0.33 83 92 70-130 10 2-Methylnaphthalene mg/kg (ppm) 0.33 79 84 70-130 6 1-Methylnaphthalene mg/kg (ppm) 0.33 79 83 70-130 5 Hexachlorocyclopentadiene mg/kg (ppm) 0.33 82 98 48-154 18 2,4,6-Trichlorophenol mg/kg (ppm) 0.33 88 96 70-130 9 2,4,5-Trichlorophenol mg/kg (ppm) 0.33 88 96 70-130 9 2-Chloronaphthalene mg/kg (ppm) 0.33 83 89 70-130 7 2-Nitroaniline mg/kg (ppm) 0.66 89 94 70-130 5 Dimethyl phthalate mg/kg (ppm) 0.33 89 92 70-130 3 Acenaphthylene mg/kg (ppm) 0.33 90 95 70-130 5 2,6-Dinitrotoluene mg/kg (ppm) 0.33 88 92 70-130 4 3-Nitroaniline mg/kg (ppm) 0.66 71 71 54-104 0 Acenaphthene mg/kg (ppm) 0.33 84 87 70-130 4 2,4-Dinitrophenol mg/kg (ppm) 0.33 110 120 51-159 9 Dibenzofuran mg/kg (ppm) 0.33 87 90 70-130 3 2,4-Dinitrotoluene mg/kg (ppm) 0.33 89 93 70-130 4 4-Nitrophenol mg/kg (ppm) 0.33 103 112 60-146 8 Diethyl phthalate mg/kg (ppm) 0.33 89 91 63-133 2 Fluorene mg/kg (ppm) 0.33 88 90 70-130 2 4-Chlorophenyl phenyl ether mg/kg (ppm) 0.33 86 87 70-130 1 N-Nitrosodiphenylamine mg/kg (ppm) 0.33 84 83 70-130 1 4-Nitroaniline mg/kg (ppm) 0.66 77 78 50-124 1 4,6-Dinitro-2-methylphenol mg/kg (ppm) 0.33 105 113 68-139 7 4-Bromophenyl phenyl ether mg/kg (ppm) 0.33 90 93 43-167 3 Hexachlorobenzene mg/kg (ppm) 0.33 86 88 70-130 2 Pentachlorophenol mg/kg (ppm) 0.33 110 115 61-136 4 Phenanthrene mg/kg (ppm) 0.33 89 90 70-130 1 Anthracene mg/kg (ppm) 0.33 87 87 70-130 0 Carbazole mg/kg (ppm) 0.33 94 98 70-130 4 Di-n-butyl phthalate mg/kg (ppm) 0.33 100 101 70-130 1 Fluoranthene mg/kg (ppm) 0.33 98 99 70-130 1 Pyrene mg/kg (ppm) 0.33 94 93 70-130 1 Benzyl butyl phthalate mg/kg (ppm) 0.33 103 106 70-130 3 Benz(a)anthracene mg/kg (ppm) 0.33 92 94 70-130 2 Chrysene mg/kg (ppm) 0.33 93 95 70-130 2 Bis(2-ethylhexyl) phthalate mg/kg (ppm) 0.33 93 98 70-130 5 Di-n-octyl phthalate mg/kg (ppm) 0.33 93 94 J 57-156 1 Benzo(a)pyrene mg/kg (ppm) 0.33 85 86 J 70-130 1 Benzo(b)fluoranthene mg/kg (ppm) 0.33 84 82 J 70-130 2 Benzo(k)fluoranthene mg/kg (ppm) 0.33 84 83 J 70-130 1 Indeno(1,2,3-cd)pyrene mg/kg (ppm) 0.33 83 90 J 63-145 8 Dibenz(a,h)anthracene mg/kg (ppm) 0.33 80 87 J 60-150 8 Benzo(g,h,i)perylene mg/kg (ppm) 0.33 79 84 J 57-144 6 15 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/11/19 Project: Arlington Residential 190211V001, F&BI 912180 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: 912296-01 (Matrix Spike) Sample Percent Percent Reporting Spike Result Recovery Recovery Acceptance RPD Analyte Units Level (Wet wt) MS MSD Criteria (Limit 20) Dichlorodifluoromethane mg/kg (ppm) 2.5 <0.5 33 37 10-142 11 Chloromethane mg/kg (ppm) 2.5 <0.5 61 59 10-126 3 Vinyl chloride mg/kg (ppm) 2.5 <0.05 59 56 10-138 5 Bromomethane mg/kg (ppm) 2.5 <0.5 75 70 10-163 7 Chloroethane mg/kg (ppm) 2.5 <0.5 74 71 10-176 4 Trichlorofluoromethane mg/kg (ppm) 2.5 <0.5 68 63 10-176 8 Acetone mg/kg (ppm) 12.5 <0.5 76 71 10-163 7 1,1-Dichloroethene mg/kg (ppm) 2.5 <0.05 78 73 10-160 7 Hexane mg/kg (ppm) 2.5 <0.25 68 60 10-137 12 Methylene chloride mg/kg (ppm) 2.5 <0.5 79 74 10-156 7 Methyl t-butyl ether (MTBE) mg/kg (ppm) 2.5 <0.05 89 86 21-145 3 trans-1,2-Dichloroethene mg/kg (ppm) 2.5 <0.05 83 79 14-137 5 1,1-Dichloroethane mg/kg (ppm) 2.5 <0.05 86 79 19-140 8 2,2-Dichloropropane mg/kg (ppm) 2.5 <0.05 85 81 10-158 5 cis-1,2-Dichloroethene mg/kg (ppm) 2.5 <0.05 91 84 25-135 8 Chloroform mg/kg (ppm) 2.5 <0.05 87 81 21-145 7 2-Butanone (MEK) mg/kg (ppm) 12.5 <0.5 83 73 19-147 13 1,2-Dichloroethane (EDC) mg/kg (ppm) 2.5 <0.05 90 83 12-160 8 1,1,1-Trichloroethane mg/kg (ppm) 2.5 <0.05 88 84 10-156 5 1,1-Dichloropropene mg/kg (ppm) 2.5 <0.05 85 78 17-140 9 Carbon tetrachloride mg/kg (ppm) 2.5 <0.05 88 84 9-164 5 Benzene mg/kg (ppm) 2.5 <0.03 87 79 29-129 10 Trichloroethene mg/kg (ppm) 2.5 <0.02 85 77 21-139 10 1,2-Dichloropropane mg/kg (ppm) 2.5 <0.05 90 80 30-135 12 Bromodichloromethane mg/kg (ppm) 2.5 <0.05 90 80 23-155 12 Dibromomethane mg/kg (ppm) 2.5 <0.05 87 79 23-145 10 4-Methyl-2-pentanone mg/kg (ppm) 12.5 <0.5 89 80 24-155 11 cis-1,3-Dichloropropene mg/kg (ppm) 2.5 <0.05 91 79 28-144 14 Toluene mg/kg (ppm) 2.5 <0.05 86 78 35-130 10 trans-1,3-Dichloropropene mg/kg (ppm) 2.5 <0.05 88 77 26-149 13 1,1,2-Trichloroethane mg/kg (ppm) 2.5 <0.05 85 76 10-205 11 2-Hexanone mg/kg (ppm) 12.5 <0.5 89 78 15-166 13 1,3-Dichloropropane mg/kg (ppm) 2.5 <0.05 88 78 31-137 12 Tetrachloroethene mg/kg (ppm) 2.5 <0.025 88 80 20-133 10 Dibromochloromethane mg/kg (ppm) 2.5 <0.05 91 81 28-150 12 1,2-Dibromoethane (EDB) mg/kg (ppm) 2.5 <0.05 87 76 28-142 13 Chlorobenzene mg/kg (ppm) 2.5 <0.05 88 80 32-129 10 Ethylbenzene mg/kg (ppm) 2.5 <0.05 90 82 32-137 9 1,1,1,2-Tetrachloroethane mg/kg (ppm) 2.5 <0.05 91 86 31-143 6 m,p-Xylene mg/kg (ppm) 5 <0.1 90 82 34-136 9 o-Xylene mg/kg (ppm) 2.5 <0.05 89 82 33-134 8 Styrene mg/kg (ppm) 2.5 <0.05 89 82 35-137 8 Isopropylbenzene mg/kg (ppm) 2.5 <0.05 90 83 31-142 8 Bromoform mg/kg (ppm) 2.5 <0.05 91 82 21-156 10 n-Propylbenzene mg/kg (ppm) 2.5 <0.05 88 79 23-146 11 Bromobenzene mg/kg (ppm) 2.5 <0.05 88 79 34-130 11 1,3,5-Trimethylbenzene mg/kg (ppm) 2.5 <0.05 91 82 18-149 10 1,1,2,2-Tetrachloroethane mg/kg (ppm) 2.5 <0.05 88 77 28-140 13 1,2,3-Trichloropropane mg/kg (ppm) 2.5 <0.05 86 77 25-144 11 2-Chlorotoluene mg/kg (ppm) 2.5 <0.05 89 80 31-134 11 4-Chlorotoluene mg/kg (ppm) 2.5 <0.05 89 80 31-136 11 tert-Butylbenzene mg/kg (ppm) 2.5 <0.05 89 81 30-137 9 1,2,4-Trimethylbenzene mg/kg (ppm) 2.5 <0.05 89 81 10-182 9 sec-Butylbenzene mg/kg (ppm) 2.5 <0.05 88 80 23-145 10 p-Isopropyltoluene mg/kg (ppm) 2.5 <0.05 88 80 21-149 10 1,3-Dichlorobenzene mg/kg (ppm) 2.5 <0.05 88 81 30-131 8 1,4-Dichlorobenzene mg/kg (ppm) 2.5 <0.05 86 79 29-129 8 1,2-Dichlorobenzene mg/kg (ppm) 2.5 <0.05 88 82 31-132 7 1,2-Dibromo-3-chloropropane mg/kg (ppm) 2.5 <0.5 84 79 11-161 6 1,2,4-Trichlorobenzene mg/kg (ppm) 2.5 <0.25 87 83 22-142 5 Hexachlorobutadiene mg/kg (ppm) 2.5 <0.25 85 82 10-142 4 Naphthalene mg/kg (ppm) 2.5 <0.05 86 80 14-157 7 1,2,3-Trichlorobenzene mg/kg (ppm) 2.5 <0.25 84 81 20-144 4 16 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/11/19 Project: Arlington Residential 190211V001, F&BI 912180 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Analyte Units Level LCS Criteria Dichlorodifluoromethane mg/kg (ppm) 2.5 59 10-76 Chloromethane mg/kg (ppm) 2.5 85 34-98 Vinyl chloride mg/kg (ppm) 2.5 81 42-107 Bromomethane mg/kg (ppm) 2.5 86 46-113 Chloroethane mg/kg (ppm) 2.5 83 47-115 Trichlorofluoromethane mg/kg (ppm) 2.5 78 53-112 Acetone mg/kg (ppm) 12.5 71 39-147 1,1-Dichloroethene mg/kg (ppm) 2.5 83 65-110 Hexane mg/kg (ppm) 2.5 96 55-107 Methylene chloride mg/kg (ppm) 2.5 114 50-127 Methyl t-butyl ether (MTBE) mg/kg (ppm) 2.5 95 72-122 trans-1,2-Dichloroethene mg/kg (ppm) 2.5 93 71-113 1,1-Dichloroethane mg/kg (ppm) 2.5 106 74-109 2,2-Dichloropropane mg/kg (ppm) 2.5 79 63-145 cis-1,2-Dichloroethene mg/kg (ppm) 2.5 97 73-110 Chloroform mg/kg (ppm) 2.5 103 76-110 2-Butanone (MEK) mg/kg (ppm) 12.5 121 60-121 1,2-Dichloroethane (EDC) mg/kg (ppm) 2.5 119 vo 73-111 1,1,1-Trichloroethane mg/kg (ppm) 2.5 93 72-116 1,1-Dichloropropene mg/kg (ppm) 2.5 109 72-112 Carbon tetrachloride mg/kg (ppm) 2.5 91 67-123 Benzene mg/kg (ppm) 2.5 103 72-106 Trichloroethene mg/kg (ppm) 2.5 108 vo 72-107 1,2-Dichloropropane mg/kg (ppm) 2.5 115 74-115 Bromodichloromethane mg/kg (ppm) 2.5 116 75-126 Dibromomethane mg/kg (ppm) 2.5 100 76-116 4-Methyl-2-pentanone mg/kg (ppm) 12.5 114 80-128 cis-1,3-Dichloropropene mg/kg (ppm) 2.5 117 71-138 Toluene mg/kg (ppm) 2.5 106 74-111 trans-1,3-Dichloropropene mg/kg (ppm) 2.5 119 73-124 1,1,2-Trichloroethane mg/kg (ppm) 2.5 116 vo 76-118 2-Hexanone mg/kg (ppm) 12.5 128 vo 67-123 1,3-Dichloropropane mg/kg (ppm) 2.5 115 75-118 Tetrachloroethene mg/kg (ppm) 2.5 96 73-111 Dibromochloromethane mg/kg (ppm) 2.5 106 64-152 1,2-Dibromoethane (EDB) mg/kg (ppm) 2.5 113 77-117 Chlorobenzene mg/kg (ppm) 2.5 106 76-109 Ethylbenzene mg/kg (ppm) 2.5 107 75-112 1,1,1,2-Tetrachloroethane mg/kg (ppm) 2.5 104 75-129 m,p-Xylene mg/kg (ppm) 5 104 77-115 o-Xylene mg/kg (ppm) 2.5 103 76-115 Styrene mg/kg (ppm) 2.5 107 76-119 Isopropylbenzene mg/kg (ppm) 2.5 104 76-120 Bromoform mg/kg (ppm) 2.5 108 50-174 n-Propylbenzene mg/kg (ppm) 2.5 117 vo 77-115 Bromobenzene mg/kg (ppm) 2.5 109 76-112 1,3,5-Trimethylbenzene mg/kg (ppm) 2.5 114 77-121 1,1,2,2-Tetrachloroethane mg/kg (ppm) 2.5 124 vo 74-121 1,2,3-Trichloropropane mg/kg (ppm) 2.5 125 vo 73-117 2-Chlorotoluene mg/kg (ppm) 2.5 115 vo 75-113 4-Chlorotoluene mg/kg (ppm) 2.5 115 77-115 tert-Butylbenzene mg/kg (ppm) 2.5 111 77-123 1,2,4-Trimethylbenzene mg/kg (ppm) 2.5 107 77-119 sec-Butylbenzene mg/kg (ppm) 2.5 112 78-120 p-Isopropyltoluene mg/kg (ppm) 2.5 109 77-120 1,3-Dichlorobenzene mg/kg (ppm) 2.5 105 76-112 1,4-Dichlorobenzene mg/kg (ppm) 2.5 107 74-109 1,2-Dichlorobenzene mg/kg (ppm) 2.5 105 75-114 1,2-Dibromo-3-chloropropane mg/kg (ppm) 2.5 126 vo 68-122 1,2,4-Trichlorobenzene mg/kg (ppm) 2.5 111 75-122 Hexachlorobutadiene mg/kg (ppm) 2.5 105 74-130 Naphthalene mg/kg (ppm) 2.5 116 73-122 1,2,3-Trichlorobenzene mg/kg (ppm) 2.5 119 vo 75-117 17 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningful. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fb - The analyte was detected in the method blank. fc - The analyte is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. ht â€“ The analysis was performed outside the method or client-specified holding time requirement. ip - Recovery fell outside of control limits due to sample matrix effects. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery and/or RPD were out of control limits. The reported concentration should be considered an estimate. js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. pc - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 18 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. 3012 16th Avenue West Yelena Aravkina, M.S. Seattle, WA 98119-2029 Michael Erdahl, B.S. (206) 285-8282 Arina Podnozova, B.S. fbi@isomedia.com Eric Young, B.S. www.friedmanandbruya.com September 23, 2019 Kellie Andrews, Project Manager Associated Earth Sciences, Inc. 911 5th Avenue, Suite 100 Kirkland, WA 98033 Dear Ms Andrews: Included are the results from the testing of material submitted on September 13, 2019 from the Arlington Residential 190211V002, F&BI 909209 project. There are 19 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days, or as directed by the Chain of Custody document. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures AE10923R.DOC FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on September 13, 2019 by Friedman & Bruya, Inc. from the Associated Earth Sciences Arlington Residential 190211V002, F&BI 909209 project. Samples were logged in under the laboratory IDâ€™s listed below. Laboratory ID Associated Earth Sciences 909209 -01 EB-8-3.5 909209 -02 EB-8-6.5 909209 -03 EB-8-9 909209 -04 EB-9-4 909209 -05 EB-9-6.5 909209 -06 EB-9-9 909209 -07 EB-9-11.5 909209 -08 EB-9-12.5 909209 -09 EB-10-5.5 909209 -10 EB-10-8 909209 -11 EB-10-12.5 909209 -12 EB-10-15.5 909209 -13 EB-11-5.5 909209 -14 EB-11-8 909209 -15 EB-11-12.5 909209 -16 EB-12-6 909209 -17 EB-12-8.5 909209 -18 EB-12-11.5 909209 -19 EB-13-4 909209 -20 EB-13-6 909209 -21 EB-13-9 909209 -22 EB-13-12.5 909209 -23 EB-13-14 The 6020B calibration standard failed the acceptance criteria for lead in sample EB-9- 12.5. The sample was diluted and reanalyzed. Both data sets were reported. The data were flagged accordingly. The 8270D compound 4-nitroaniline failed below the acceptance criteria in the matrix spike sample. The laboratory control samples met the acceptance criteria, therefore the data were likely due to sample matrix effect. All other quality control requirements were acceptable. 1 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/23/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909209 Date Extracted: 09/17/19 Date Analyzed: 09/17/19 RESULTS FROM THE ANALYSIS OF SOIL SAMPLES FOR GASOLINE, DIESEL AND HEAVY OIL BY NWTPH-HCID Results Reported on a Dry Weight Basis Results Reported as Not Detected (ND) or Detected (D) THE DATA PROVIDED BELOW WAS PERFORMED PER THE GUIDELINES ESTABLISHED BY THE WASHINGTON DEPARTMENT OF ECOLOGY AND WERE NOT DESIGNED TO PROVIDE INFORMATION WITH REGARDS TO THE ACTUAL IDENTIFICATION OF ANY MATERIAL PRESENT Surrogate Sample ID Gasoline Diesel Heavy Oil (% Recovery) Laboratory ID (Limit 56-165) EB-8-6.5 ND ND ND 100 909209-02 EB-9-6.5 ND ND ND 101 909209-05 EB-9-12.5 ND ND ND 95 909209-08 Method Blank ND ND ND 87 09-2292 MB ND - Material not detected at or above 20 mg/kg gas, 50 mg/kg diesel and 250 mg/kg heavy oil. 2 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-8-6.5 Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/19/19 Lab ID: 909209-02 1/5 Date Analyzed: 09/19/19 Data File: 091913.D Matrix: Soil Instrument: GCMS8 Units: mg/kg (ppm) Dry Weight Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 84 50 150 Phenol-d6 87 50 150 Nitrobenzene-d5 82 50 150 2-Fluorobiphenyl 80 50 150 2,4,6-Tribromophenol 90 50 150 Terphenyl-d14 83 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Phenol <0.5 2,6-Dinitrotoluene <0.25 Bis(2-chloroethyl) ether <0.05 3-Nitroaniline <5 2-Chlorophenol <0.5 Acenaphthene <0.01 1,3-Dichlorobenzene <0.05 2,4-Dinitrophenol <1.5 1,4-Dichlorobenzene <0.05 Dibenzofuran <0.05 1,2-Dichlorobenzene <0.05 2,4-Dinitrotoluene <0.25 Benzyl alcohol <0.5 4-Nitrophenol <1.5 2,2â€™-Oxybis(1-chloropropane) <0.05 Diethyl phthalate <0.5 2-Methylphenol <0.5 Fluorene <0.01 Hexachloroethane <0.05 4-Chlorophenyl phenyl ether <0.05 N-Nitroso-di-n-propylamine <0.05 N-Nitrosodiphenylamine <0.05 3-Methylphenol + 4-Methylphenol <1 4-Nitroaniline <5 Nitrobenzene <0.05 4,6-Dinitro-2-methylphenol <1.5 Isophorone <0.05 4-Bromophenyl phenyl ether <0.05 2-Nitrophenol <0.5 Hexachlorobenzene <0.05 2,4-Dimethylphenol <0.5 Pentachlorophenol <0.25 Benzoic acid <2.5 Phenanthrene <0.01 Bis(2-chloroethoxy)methane <0.05 Anthracene <0.01 2,4-Dichlorophenol <0.5 Carbazole <0.05 1,2,4-Trichlorobenzene <0.05 Di-n-butyl phthalate <0.5 Naphthalene <0.01 Fluoranthene <0.01 Hexachlorobutadiene <0.05 Pyrene <0.01 4-Chloroaniline <5 Benzyl butyl phthalate <0.5 4-Chloro-3-methylphenol <0.5 Benz(a)anthracene <0.01 2-Methylnaphthalene <0.01 Chrysene <0.01 1-Methylnaphthalene <0.01 Bis(2-ethylhexyl) phthalate <0.8 Hexachlorocyclopentadiene <0.15 Di-n-octyl phthalate <0.5 2,4,6-Trichlorophenol <0.5 Benzo(a)pyrene <0.01 2,4,5-Trichlorophenol <0.5 Benzo(b)fluoranthene <0.01 2-Chloronaphthalene <0.05 Benzo(k)fluoranthene <0.01 2-Nitroaniline <0.25 Indeno(1,2,3-cd)pyrene <0.01 Dimethyl phthalate <0.5 Dibenz(a,h)anthracene <0.01 Acenaphthylene <0.01 Benzo(g,h,i)perylene <0.01 3 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-9-6.5 Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/19/19 Lab ID: 909209-05 Date Analyzed: 09/19/19 Data File: 091911.D Matrix: Soil Instrument: GCMS8 Units: mg/kg (ppm) Dry Weight Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 71 50 150 Phenol-d6 78 50 150 Nitrobenzene-d5 75 50 150 2-Fluorobiphenyl 72 50 150 2,4,6-Tribromophenol 90 50 150 Terphenyl-d14 79 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Phenol <0.1 2,6-Dinitrotoluene <0.05 Bis(2-chloroethyl) ether <0.01 3-Nitroaniline <1 2-Chlorophenol <0.1 Acenaphthene <0.002 1,3-Dichlorobenzene <0.01 2,4-Dinitrophenol <0.3 1,4-Dichlorobenzene <0.01 Dibenzofuran <0.01 1,2-Dichlorobenzene <0.01 2,4-Dinitrotoluene <0.05 Benzyl alcohol <0.1 4-Nitrophenol <0.3 2,2â€™-Oxybis(1-chloropropane) <0.01 Diethyl phthalate <0.1 2-Methylphenol <0.1 Fluorene <0.002 Hexachloroethane <0.01 4-Chlorophenyl phenyl ether <0.01 N-Nitroso-di-n-propylamine <0.01 N-Nitrosodiphenylamine <0.01 3-Methylphenol + 4-Methylphenol <0.2 4-Nitroaniline <1 Nitrobenzene <0.01 4,6-Dinitro-2-methylphenol <0.3 Isophorone <0.01 4-Bromophenyl phenyl ether <0.01 2-Nitrophenol <0.1 Hexachlorobenzene <0.01 2,4-Dimethylphenol <0.1 Pentachlorophenol <0.05 Benzoic acid <0.5 Phenanthrene <0.002 Bis(2-chloroethoxy)methane <0.01 Anthracene <0.002 2,4-Dichlorophenol <0.1 Carbazole <0.01 1,2,4-Trichlorobenzene <0.01 Di-n-butyl phthalate <0.1 Naphthalene <0.002 Fluoranthene <0.002 Hexachlorobutadiene <0.01 Pyrene <0.002 4-Chloroaniline <1 Benzyl butyl phthalate <0.1 4-Chloro-3-methylphenol <0.1 Benz(a)anthracene <0.002 2-Methylnaphthalene <0.002 Chrysene <0.002 1-Methylnaphthalene <0.002 Bis(2-ethylhexyl) phthalate <0.16 Hexachlorocyclopentadiene <0.03 Di-n-octyl phthalate <0.1 2,4,6-Trichlorophenol <0.1 Benzo(a)pyrene <0.002 2,4,5-Trichlorophenol <0.1 Benzo(b)fluoranthene <0.002 2-Chloronaphthalene <0.01 Benzo(k)fluoranthene <0.002 2-Nitroaniline <0.05 Indeno(1,2,3-cd)pyrene <0.002 Dimethyl phthalate <0.1 Dibenz(a,h)anthracene <0.002 Acenaphthylene <0.002 Benzo(g,h,i)perylene <0.002 4 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-9-12.5 Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/19/19 Lab ID: 909209-08 1/5 Date Analyzed: 09/19/19 Data File: 091914.D Matrix: Soil Instrument: GCMS8 Units: mg/kg (ppm) Dry Weight Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 89 50 150 Phenol-d6 90 50 150 Nitrobenzene-d5 83 50 150 2-Fluorobiphenyl 77 50 150 2,4,6-Tribromophenol 102 50 150 Terphenyl-d14 80 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Phenol <0.5 2,6-Dinitrotoluene <0.25 Bis(2-chloroethyl) ether <0.05 3-Nitroaniline <5 2-Chlorophenol <0.5 Acenaphthene <0.01 1,3-Dichlorobenzene <0.05 2,4-Dinitrophenol <1.5 1,4-Dichlorobenzene <0.05 Dibenzofuran <0.05 1,2-Dichlorobenzene <0.05 2,4-Dinitrotoluene <0.25 Benzyl alcohol <0.5 4-Nitrophenol <1.5 2,2â€™-Oxybis(1-chloropropane) <0.05 Diethyl phthalate <0.5 2-Methylphenol <0.5 Fluorene <0.01 Hexachloroethane <0.05 4-Chlorophenyl phenyl ether <0.05 N-Nitroso-di-n-propylamine <0.05 N-Nitrosodiphenylamine <0.05 3-Methylphenol + 4-Methylphenol <1 4-Nitroaniline <5 Nitrobenzene <0.05 4,6-Dinitro-2-methylphenol <1.5 Isophorone <0.05 4-Bromophenyl phenyl ether <0.05 2-Nitrophenol <0.5 Hexachlorobenzene <0.05 2,4-Dimethylphenol <0.5 Pentachlorophenol <0.25 Benzoic acid <2.5 Phenanthrene <0.01 Bis(2-chloroethoxy)methane <0.05 Anthracene <0.01 2,4-Dichlorophenol <0.5 Carbazole <0.05 1,2,4-Trichlorobenzene <0.05 Di-n-butyl phthalate <0.5 Naphthalene <0.01 Fluoranthene <0.01 Hexachlorobutadiene <0.05 Pyrene <0.01 4-Chloroaniline <5 Benzyl butyl phthalate <0.5 4-Chloro-3-methylphenol <0.5 Benz(a)anthracene <0.01 2-Methylnaphthalene <0.01 Chrysene <0.01 1-Methylnaphthalene <0.01 Bis(2-ethylhexyl) phthalate <0.8 Hexachlorocyclopentadiene <0.15 Di-n-octyl phthalate <0.5 2,4,6-Trichlorophenol <0.5 Benzo(a)pyrene <0.01 2,4,5-Trichlorophenol <0.5 Benzo(b)fluoranthene <0.01 2-Chloronaphthalene <0.05 Benzo(k)fluoranthene <0.01 2-Nitroaniline <0.25 Indeno(1,2,3-cd)pyrene <0.01 Dimethyl phthalate <0.5 Dibenz(a,h)anthracene <0.01 Acenaphthylene <0.01 Benzo(g,h,i)perylene <0.01 5 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V002 Date Extracted: 09/19/19 Lab ID: 09-2300 mb Date Analyzed: 09/19/19 Data File: 091909.D Matrix: Soil Instrument: GCMS8 Units: mg/kg (ppm) Dry Weight Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 87 50 150 Phenol-d6 91 50 150 Nitrobenzene-d5 86 50 150 2-Fluorobiphenyl 85 50 150 2,4,6-Tribromophenol 82 50 150 Terphenyl-d14 85 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Phenol <0.1 2,6-Dinitrotoluene <0.05 Bis(2-chloroethyl) ether <0.01 3-Nitroaniline <1 2-Chlorophenol <0.1 Acenaphthene <0.002 1,3-Dichlorobenzene <0.01 2,4-Dinitrophenol <0.3 1,4-Dichlorobenzene <0.01 Dibenzofuran <0.01 1,2-Dichlorobenzene <0.01 2,4-Dinitrotoluene <0.05 Benzyl alcohol <0.1 4-Nitrophenol <0.3 2,2â€™-Oxybis(1-chloropropane) <0.01 Diethyl phthalate <0.1 2-Methylphenol <0.1 Fluorene <0.002 Hexachloroethane <0.01 4-Chlorophenyl phenyl ether <0.01 N-Nitroso-di-n-propylamine <0.01 N-Nitrosodiphenylamine <0.01 3-Methylphenol + 4-Methylphenol <0.2 4-Nitroaniline <1 Nitrobenzene <0.01 4,6-Dinitro-2-methylphenol <0.3 Isophorone <0.01 4-Bromophenyl phenyl ether <0.01 2-Nitrophenol <0.1 Hexachlorobenzene <0.01 2,4-Dimethylphenol <0.1 Pentachlorophenol <0.05 Benzoic acid <0.5 Phenanthrene <0.002 Bis(2-chloroethoxy)methane <0.01 Anthracene <0.002 2,4-Dichlorophenol <0.1 Carbazole <0.01 1,2,4-Trichlorobenzene <0.01 Di-n-butyl phthalate <0.1 Naphthalene <0.002 Fluoranthene <0.002 Hexachlorobutadiene <0.01 Pyrene <0.002 4-Chloroaniline <1 Benzyl butyl phthalate <0.1 4-Chloro-3-methylphenol <0.1 Benz(a)anthracene <0.002 2-Methylnaphthalene <0.002 Chrysene <0.002 1-Methylnaphthalene <0.002 Bis(2-ethylhexyl) phthalate <0.16 Hexachlorocyclopentadiene <0.03 Di-n-octyl phthalate <0.1 2,4,6-Trichlorophenol <0.1 Benzo(a)pyrene <0.002 2,4,5-Trichlorophenol <0.1 Benzo(b)fluoranthene <0.002 2-Chloronaphthalene <0.01 Benzo(k)fluoranthene <0.002 2-Nitroaniline <0.05 Indeno(1,2,3-cd)pyrene <0.002 Dimethyl phthalate <0.1 Dibenz(a,h)anthracene <0.002 Acenaphthylene <0.002 Benzo(g,h,i)perylene <0.002 6 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 200.8 Client ID: EB-9-12.5 Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/17/19 Lab ID: 909209-08 Date Analyzed: 09/17/19 Data File: 909209-08.119 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic 5.55 Barium 27.4 Cadmium <1 Chromium 13.8 Lead 2.66 ca Mercury <1 Selenium <1 Silver <1 7 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 200.8 Client ID: EB-9-12.5 Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/17/19 Lab ID: 909209-08 x5 Date Analyzed: 09/17/19 Data File: 909209-08 x5.116 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Lead <5 8 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Total Metals By EPA Method 200.8 Client ID: Method Blank Client: Associated Earth Sciences Date Received: NA Project: Arlington Residential 190211V002 Date Extracted: 09/17/19 Lab ID: I9-569 mb Date Analyzed: 09/17/19 Data File: I9-569 mb.114 Matrix: Soil Instrument: ICPMS2 Units: mg/kg (ppm) Dry Weight Operator: SP Concentration Analyte: mg/kg (ppm) Arsenic <1 Barium <1 Cadmium <1 Chromium <5 Lead <1 Mercury <1 Selenium <1 Silver <1 9 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-8-6.5 Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/16/19 Lab ID: 909209-02 Date Analyzed: 09/16/19 Data File: 091621.D Matrix: Soil Instrument: GCMS4 Units: mg/kg (ppm) Dry Weight Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 99 62 145 Toluene-d8 96 55 145 4-Bromofluorobenzene 95 65 139 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.5 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Hexane <0.25 o-Xylene <0.05 Methylene chloride <0.5 Styrene <0.05 Methyl t-butyl ether (MTBE) <0.05 Isopropylbenzene <0.05 trans-1,2-Dichloroethene <0.05 Bromoform <0.05 1,1-Dichloroethane <0.05 n-Propylbenzene <0.05 2,2-Dichloropropane <0.05 Bromobenzene <0.05 cis-1,2-Dichloroethene <0.05 1,3,5-Trimethylbenzene <0.05 Chloroform <0.05 1,1,2,2-Tetrachloroethane <0.05 2-Butanone (MEK) <0.5 1,2,3-Trichloropropane <0.05 1,2-Dichloroethane (EDC) <0.05 2-Chlorotoluene <0.05 1,1,1-Trichloroethane <0.05 4-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 tert-Butylbenzene <0.05 Carbon tetrachloride <0.05 1,2,4-Trimethylbenzene <0.05 Benzene <0.03 sec-Butylbenzene <0.05 Trichloroethene <0.02 p-Isopropyltoluene <0.05 1,2-Dichloropropane <0.05 1,3-Dichlorobenzene <0.05 Bromodichloromethane <0.05 1,4-Dichlorobenzene <0.05 Dibromomethane <0.05 1,2-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dibromo-3-chloropropane <0.5 cis-1,3-Dichloropropene <0.05 1,2,4-Trichlorobenzene <0.25 Toluene <0.05 Hexachlorobutadiene <0.25 trans-1,3-Dichloropropene <0.05 Naphthalene <0.05 1,1,2-Trichloroethane <0.05 1,2,3-Trichlorobenzene <0.25 2-Hexanone <0.5 10 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-9-6.5 Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/16/19 Lab ID: 909209-05 Date Analyzed: 09/16/19 Data File: 091622.D Matrix: Soil Instrument: GCMS4 Units: mg/kg (ppm) Dry Weight Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 101 62 145 Toluene-d8 97 55 145 4-Bromofluorobenzene 96 65 139 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.5 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone 0.52 lc 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Hexane <0.25 o-Xylene <0.05 Methylene chloride <0.5 Styrene <0.05 Methyl t-butyl ether (MTBE) <0.05 Isopropylbenzene <0.05 trans-1,2-Dichloroethene <0.05 Bromoform <0.05 1,1-Dichloroethane <0.05 n-Propylbenzene <0.05 2,2-Dichloropropane <0.05 Bromobenzene <0.05 cis-1,2-Dichloroethene <0.05 1,3,5-Trimethylbenzene <0.05 Chloroform <0.05 1,1,2,2-Tetrachloroethane <0.05 2-Butanone (MEK) <0.5 1,2,3-Trichloropropane <0.05 1,2-Dichloroethane (EDC) <0.05 2-Chlorotoluene <0.05 1,1,1-Trichloroethane <0.05 4-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 tert-Butylbenzene <0.05 Carbon tetrachloride <0.05 1,2,4-Trimethylbenzene <0.05 Benzene <0.03 sec-Butylbenzene <0.05 Trichloroethene <0.02 p-Isopropyltoluene 0.18 1,2-Dichloropropane <0.05 1,3-Dichlorobenzene <0.05 Bromodichloromethane <0.05 1,4-Dichlorobenzene <0.05 Dibromomethane <0.05 1,2-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dibromo-3-chloropropane <0.5 cis-1,3-Dichloropropene <0.05 1,2,4-Trichlorobenzene <0.25 Toluene <0.05 Hexachlorobutadiene <0.25 trans-1,3-Dichloropropene <0.05 Naphthalene <0.05 1,1,2-Trichloroethane <0.05 1,2,3-Trichlorobenzene <0.25 2-Hexanone <0.5 11 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-9-12.5 Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/16/19 Lab ID: 909209-08 Date Analyzed: 09/16/19 Data File: 091623.D Matrix: Soil Instrument: GCMS4 Units: mg/kg (ppm) Dry Weight Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 100 62 145 Toluene-d8 98 55 145 4-Bromofluorobenzene 98 65 139 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.5 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Hexane <0.25 o-Xylene <0.05 Methylene chloride <0.5 Styrene <0.05 Methyl t-butyl ether (MTBE) <0.05 Isopropylbenzene <0.05 trans-1,2-Dichloroethene <0.05 Bromoform <0.05 1,1-Dichloroethane <0.05 n-Propylbenzene <0.05 2,2-Dichloropropane <0.05 Bromobenzene <0.05 cis-1,2-Dichloroethene <0.05 1,3,5-Trimethylbenzene <0.05 Chloroform <0.05 1,1,2,2-Tetrachloroethane <0.05 2-Butanone (MEK) <0.5 1,2,3-Trichloropropane <0.05 1,2-Dichloroethane (EDC) <0.05 2-Chlorotoluene <0.05 1,1,1-Trichloroethane <0.05 4-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 tert-Butylbenzene <0.05 Carbon tetrachloride <0.05 1,2,4-Trimethylbenzene <0.05 Benzene <0.03 sec-Butylbenzene <0.05 Trichloroethene <0.02 p-Isopropyltoluene 6.3 1,2-Dichloropropane <0.05 1,3-Dichlorobenzene <0.05 Bromodichloromethane <0.05 1,4-Dichlorobenzene <0.05 Dibromomethane <0.05 1,2-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dibromo-3-chloropropane <0.5 cis-1,3-Dichloropropene <0.05 1,2,4-Trichlorobenzene <0.25 Toluene <0.05 Hexachlorobutadiene <0.25 trans-1,3-Dichloropropene <0.05 Naphthalene <0.05 1,1,2-Trichloroethane <0.05 1,2,3-Trichlorobenzene <0.25 2-Hexanone <0.5 12 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V002 Date Extracted: 09/16/19 Lab ID: 09-2246 mb Date Analyzed: 09/16/19 Data File: 091608.D Matrix: Soil Instrument: GCMS4 Units: mg/kg (ppm) Dry Weight Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 100 62 145 Toluene-d8 97 55 145 4-Bromofluorobenzene 96 65 139 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.5 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Hexane <0.25 o-Xylene <0.05 Methylene chloride <0.5 Styrene <0.05 Methyl t-butyl ether (MTBE) <0.05 Isopropylbenzene <0.05 trans-1,2-Dichloroethene <0.05 Bromoform <0.05 1,1-Dichloroethane <0.05 n-Propylbenzene <0.05 2,2-Dichloropropane <0.05 Bromobenzene <0.05 cis-1,2-Dichloroethene <0.05 1,3,5-Trimethylbenzene <0.05 Chloroform <0.05 1,1,2,2-Tetrachloroethane <0.05 2-Butanone (MEK) <0.5 1,2,3-Trichloropropane <0.05 1,2-Dichloroethane (EDC) <0.05 2-Chlorotoluene <0.05 1,1,1-Trichloroethane <0.05 4-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 tert-Butylbenzene <0.05 Carbon tetrachloride <0.05 1,2,4-Trimethylbenzene <0.05 Benzene <0.03 sec-Butylbenzene <0.05 Trichloroethene <0.02 p-Isopropyltoluene <0.05 1,2-Dichloropropane <0.05 1,3-Dichlorobenzene <0.05 Bromodichloromethane <0.05 1,4-Dichlorobenzene <0.05 Dibromomethane <0.05 1,2-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dibromo-3-chloropropane <0.5 cis-1,3-Dichloropropene <0.05 1,2,4-Trichlorobenzene <0.25 Toluene <0.05 Hexachlorobutadiene <0.25 trans-1,3-Dichloropropene <0.05 Naphthalene <0.05 1,1,2-Trichloroethane <0.05 1,2,3-Trichlorobenzene <0.25 2-Hexanone <0.5 13 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/23/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909209 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR SEMIVOLATILES BY EPA METHOD 8270D Laboratory Code: 909209-05 (Matrix Spike) Sample Percent Reporting Spike Result Recovery Acceptance Analyte Units Level (Wet wt) MS Criteria Phenol mg/kg (ppm) 0.33 <0.1 84 50-150 Bis(2-chloroethyl) ether mg/kg (ppm) 0.33 <0.01 76 50-150 2-Chlorophenol mg/kg (ppm) 0.33 <0.1 79 50-150 1,3-Dichlorobenzene mg/kg (ppm) 0.33 <0.01 71 50-150 1,4-Dichlorobenzene mg/kg (ppm) 0.33 <0.01 73 50-150 1,2-Dichlorobenzene mg/kg (ppm) 0.33 <0.01 75 50-150 Benzyl alcohol mg/kg (ppm) 0.33 <0.1 81 50-150 2,2'-Oxybis(1-chloropropane) mg/kg (ppm) 0.33 <0.01 77 50-150 2-Methylphenol mg/kg (ppm) 0.33 <0.1 84 50-150 Hexachloroethane mg/kg (ppm) 0.33 <0.01 73 50-150 N-Nitroso-di-n-propylamine mg/kg (ppm) 0.33 <0.01 88 50-150 3-Methylphenol + 4-Methylphenol mg/kg (ppm) 0.33 <0.2 86 50-150 Nitrobenzene mg/kg (ppm) 0.33 <0.01 80 50-150 Isophorone mg/kg (ppm) 0.33 <0.01 98 50-150 2-Nitrophenol mg/kg (ppm) 0.33 <0.1 86 50-150 2,4-Dimethylphenol mg/kg (ppm) 0.33 <0.1 82 50-150 Benzoic acid mg/kg (ppm) 0.5 <0.5 69 50-150 Bis(2-chloroethoxy)methane mg/kg (ppm) 0.33 <0.01 79 50-150 2,4-Dichlorophenol mg/kg (ppm) 0.33 <0.1 82 50-150 1,2,4-Trichlorobenzene mg/kg (ppm) 0.33 <0.01 78 50-150 Naphthalene mg/kg (ppm) 0.33 <0.002 77 50-150 Hexachlorobutadiene mg/kg (ppm) 0.33 <0.01 75 50-150 4-Chloroaniline mg/kg (ppm) 0.66 <1 51 50-150 4-Chloro-3-methylphenol mg/kg (ppm) 0.33 <0.1 95 50-150 2-Methylnaphthalene mg/kg (ppm) 0.33 <0.002 83 50-150 1-Methylnaphthalene mg/kg (ppm) 0.33 <0.002 84 50-150 Hexachlorocyclopentadiene mg/kg (ppm) 0.33 <0.03 64 50-150 2,4,6-Trichlorophenol mg/kg (ppm) 0.33 <0.1 88 50-150 2,4,5-Trichlorophenol mg/kg (ppm) 0.33 <0.1 85 50-150 2-Chloronaphthalene mg/kg (ppm) 0.33 <0.01 79 50-150 2-Nitroaniline mg/kg (ppm) 0.33 <0.05 84 50-150 Dimethyl phthalate mg/kg (ppm) 0.33 <0.1 83 50-150 Acenaphthylene mg/kg (ppm) 0.33 <0.002 87 50-150 2,6-Dinitrotoluene mg/kg (ppm) 0.33 <0.05 89 50-150 3-Nitroaniline mg/kg (ppm) 0.66 <1 54 50-150 Acenaphthene mg/kg (ppm) 0.33 <0.002 83 50-150 2,4-Dinitrophenol mg/kg (ppm) 0.33 <0.3 88 50-150 Dibenzofuran mg/kg (ppm) 0.33 <0.01 85 50-150 2,4-Dinitrotoluene mg/kg (ppm) 0.33 <0.05 92 50-150 4-Nitrophenol mg/kg (ppm) 0.33 <0.3 82 50-150 Diethyl phthalate mg/kg (ppm) 0.33 <0.1 94 50-150 Fluorene mg/kg (ppm) 0.33 <0.002 90 50-150 4-Chlorophenyl phenyl ether mg/kg (ppm) 0.33 <0.01 85 50-150 N-Nitrosodiphenylamine mg/kg (ppm) 0.33 <0.01 77 50-150 4-Nitroaniline mg/kg (ppm) 0.66 <1 47 vo 50-150 4,6-Dinitro-2-methylphenol mg/kg (ppm) 0.33 <0.3 90 50-150 4-Bromophenyl phenyl ether mg/kg (ppm) 0.33 <0.01 79 50-150 Hexachlorobenzene mg/kg (ppm) 0.33 <0.01 79 50-150 Pentachlorophenol mg/kg (ppm) 0.33 <0.05 97 50-150 Phenanthrene mg/kg (ppm) 0.33 <0.002 83 50-150 Anthracene mg/kg (ppm) 0.33 <0.002 84 50-150 Carbazole mg/kg (ppm) 0.33 <0.01 88 50-150 Di-n-butyl phthalate mg/kg (ppm) 0.33 <0.1 98 50-150 Fluoranthene mg/kg (ppm) 0.33 <0.002 86 50-150 Pyrene mg/kg (ppm) 0.33 <0.002 91 50-150 Benzyl butyl phthalate mg/kg (ppm) 0.33 <0.1 110 50-150 Benz(a)anthracene mg/kg (ppm) 0.33 <0.002 87 50-150 Chrysene mg/kg (ppm) 0.33 <0.002 82 50-150 Bis(2-ethylhexyl) phthalate mg/kg (ppm) 0.33 <0.16 104 50-150 Di-n-octyl phthalate mg/kg (ppm) 0.33 <0.1 119 50-150 Benzo(a)pyrene mg/kg (ppm) 0.33 <0.002 87 50-150 Benzo(b)fluoranthene mg/kg (ppm) 0.33 <0.002 86 50-150 Benzo(k)fluoranthene mg/kg (ppm) 0.33 <0.002 84 50-150 Indeno(1,2,3-cd)pyrene mg/kg (ppm) 0.33 <0.002 81 50-150 Dibenz(a,h)anthracene mg/kg (ppm) 0.33 <0.002 76 50-150 Benzo(g,h,i)perylene mg/kg (ppm) 0.33 <0.002 70 50-150 14 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/23/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909209 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR SEMIVOLATILES BY EPA METHOD 8270D Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Phenol mg/kg (ppm) 0.33 95 97 70-130 2 Bis(2-chloroethyl) ether mg/kg (ppm) 0.33 84 89 70-130 6 2-Chlorophenol mg/kg (ppm) 0.33 86 90 70-130 5 1,3-Dichlorobenzene mg/kg (ppm) 0.33 79 84 62-115 6 1,4-Dichlorobenzene mg/kg (ppm) 0.33 81 85 63-114 5 1,2-Dichlorobenzene mg/kg (ppm) 0.33 83 88 68-113 6 Benzyl alcohol mg/kg (ppm) 0.33 98 99 70-130 1 2,2'-Oxybis(1-chloropropane) mg/kg (ppm) 0.33 83 89 70-130 7 2-Methylphenol mg/kg (ppm) 0.33 90 93 70-130 3 Hexachloroethane mg/kg (ppm) 0.33 83 83 70-130 0 N-Nitroso-di-n-propylamine mg/kg (ppm) 0.33 95 100 70-130 5 3-Methylphenol + 4-Methylphenol mg/kg (ppm) 0.33 95 99 70-130 4 Nitrobenzene mg/kg (ppm) 0.33 88 93 70-130 6 Isophorone mg/kg (ppm) 0.33 95 101 70-130 6 2-Nitrophenol mg/kg (ppm) 0.33 89 95 70-130 7 2,4-Dimethylphenol mg/kg (ppm) 0.33 83 92 58-118 10 Benzoic acid mg/kg (ppm) 0.5 87 96 61-153 10 Bis(2-chloroethoxy)methane mg/kg (ppm) 0.33 87 93 70-130 7 2,4-Dichlorophenol mg/kg (ppm) 0.33 90 93 70-130 3 1,2,4-Trichlorobenzene mg/kg (ppm) 0.33 86 90 70-130 5 Naphthalene mg/kg (ppm) 0.33 85 90 70-130 6 Hexachlorobutadiene mg/kg (ppm) 0.33 83 85 70-130 2 4-Chloroaniline mg/kg (ppm) 0.66 50 57 10-90 13 4-Chloro-3-methylphenol mg/kg (ppm) 0.33 98 105 70-130 7 2-Methylnaphthalene mg/kg (ppm) 0.33 90 96 70-130 6 1-Methylnaphthalene mg/kg (ppm) 0.33 90 96 70-130 6 Hexachlorocyclopentadiene mg/kg (ppm) 0.33 76 91 48-154 18 2,4,6-Trichlorophenol mg/kg (ppm) 0.33 93 96 70-130 3 2,4,5-Trichlorophenol mg/kg (ppm) 0.33 91 95 70-130 4 2-Chloronaphthalene mg/kg (ppm) 0.33 87 91 70-130 4 2-Nitroaniline mg/kg (ppm) 0.33 90 93 70-130 3 Dimethyl phthalate mg/kg (ppm) 0.33 91 93 70-130 2 Acenaphthylene mg/kg (ppm) 0.33 95 99 70-130 4 2,6-Dinitrotoluene mg/kg (ppm) 0.33 104 97 70-130 7 3-Nitroaniline mg/kg (ppm) 0.66 85 92 54-104 8 Acenaphthene mg/kg (ppm) 0.33 91 94 70-130 3 2,4-Dinitrophenol mg/kg (ppm) 0.33 92 109 51-159 17 Dibenzofuran mg/kg (ppm) 0.33 93 97 70-130 4 2,4-Dinitrotoluene mg/kg (ppm) 0.33 98 102 70-130 4 4-Nitrophenol mg/kg (ppm) 0.33 96 108 60-146 12 Diethyl phthalate mg/kg (ppm) 0.33 97 100 63-133 3 Fluorene mg/kg (ppm) 0.33 96 99 70-130 3 4-Chlorophenyl phenyl ether mg/kg (ppm) 0.33 91 93 70-130 2 N-Nitrosodiphenylamine mg/kg (ppm) 0.33 82 85 70-130 4 4-Nitroaniline mg/kg (ppm) 0.66 73 83 50-124 13 4,6-Dinitro-2-methylphenol mg/kg (ppm) 0.33 89 101 68-139 13 4-Bromophenyl phenyl ether mg/kg (ppm) 0.33 88 90 43-167 2 Hexachlorobenzene mg/kg (ppm) 0.33 88 88 70-130 0 Pentachlorophenol mg/kg (ppm) 0.33 79 88 61-136 11 Phenanthrene mg/kg (ppm) 0.33 93 95 70-130 2 Anthracene mg/kg (ppm) 0.33 91 95 70-130 4 Carbazole mg/kg (ppm) 0.33 98 105 70-130 7 Di-n-butyl phthalate mg/kg (ppm) 0.33 96 101 70-130 5 Fluoranthene mg/kg (ppm) 0.33 103 109 70-130 6 Pyrene mg/kg (ppm) 0.33 93 91 70-130 2 Benzyl butyl phthalate mg/kg (ppm) 0.33 96 101 70-130 5 Benz(a)anthracene mg/kg (ppm) 0.33 94 97 70-130 3 Chrysene mg/kg (ppm) 0.33 94 97 70-130 3 Bis(2-ethylhexyl) phthalate mg/kg (ppm) 0.33 82 96 70-130 16 Di-n-octyl phthalate mg/kg (ppm) 0.33 87 100 57-156 14 Benzo(a)pyrene mg/kg (ppm) 0.33 92 94 70-130 2 Benzo(b)fluoranthene mg/kg (ppm) 0.33 93 93 70-130 0 Benzo(k)fluoranthene mg/kg (ppm) 0.33 90 94 70-130 4 Indeno(1,2,3-cd)pyrene mg/kg (ppm) 0.33 100 100 63-145 0 Dibenz(a,h)anthracene mg/kg (ppm) 0.33 99 97 60-150 2 Benzo(g,h,i)perylene mg/kg (ppm) 0.33 95 93 57-144 2 15 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/23/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909209 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR TOTAL METALS USING EPA METHOD 200.8 Laboratory Code: 909209-08 x5 (Matrix Spike) Sample Percent Percent Reporting Spike Result Recovery Recovery Acceptance RPD Analyte Units Level (Wet wt) MS MSD Criteria (Limit 20) Arsenic mg/kg (ppm) 10 5.14 87 b 107 b 70-130 21 b Barium mg/kg (ppm) 50 23.1 96 96 70-130 0 Cadmium mg/kg (ppm) 10 <5 92 92 70-130 0 Chromium mg/kg (ppm) 50 <25 87 88 70-130 1 Lead mg/kg (ppm) 50 <5 99 99 70-130 0 Mercury mg/kg (ppm 5 <5 92 92 70-130 0 Selenium mg/kg (ppm) 5 <5 86 86 70-130 0 Silver mg/kg (ppm) 10 <5 90 93 70-130 3 Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Analyte Units Level LCS Criteria Arsenic mg/kg (ppm) 10 88 85-115 Barium mg/kg (ppm) 50 93 85-115 Cadmium mg/kg (ppm) 10 95 85-115 Chromium mg/kg (ppm) 50 96 85-115 Lead mg/kg (ppm) 50 105 85-115 Mercury mg/kg (ppm) 5 101 85-115 Selenium mg/kg (ppm) 5 96 85-115 Silver mg/kg (ppm) 10 103 85-115 16 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/23/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909209 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: 909244-07 (Matrix Spike) Sample Percent Percent Reporting Spike Result Recovery Recovery Acceptance RPD Analyte Units Level (Wet wt) MS MSD Criteria (Limit 20) Dichlorodifluoromethane mg/kg (ppm) 2.5 <0.5 31 31 10-142 0 Chloromethane mg/kg (ppm) 2.5 <0.5 59 57 10-126 3 Vinyl chloride mg/kg (ppm) 2.5 <0.05 58 60 10-138 3 Bromomethane mg/kg (ppm) 2.5 <0.5 71 77 10-163 8 Chloroethane mg/kg (ppm) 2.5 <0.5 71 74 10-176 4 Trichlorofluoromethane mg/kg (ppm) 2.5 <0.5 67 71 10-176 6 Acetone mg/kg (ppm) 12.5 <0.5 137 135 10-163 1 1,1-Dichloroethene mg/kg (ppm) 2.5 <0.05 78 80 10-160 3 Hexane mg/kg (ppm) 2.5 <0.25 60 61 10-137 2 Methylene chloride mg/kg (ppm) 2.5 <0.5 77 80 10-156 4 Methyl t-butyl ether (MTBE) mg/kg (ppm) 2.5 <0.05 88 92 21-145 4 trans-1,2-Dichloroethene mg/kg (ppm) 2.5 <0.05 83 86 14-137 4 1,1-Dichloroethane mg/kg (ppm) 2.5 <0.05 82 85 19-140 4 2,2-Dichloropropane mg/kg (ppm) 2.5 <0.05 86 89 10-158 3 cis-1,2-Dichloroethene mg/kg (ppm) 2.5 <0.05 85 88 25-135 3 Chloroform mg/kg (ppm) 2.5 <0.05 88 92 21-145 4 2-Butanone (MEK) mg/kg (ppm) 12.5 <0.5 115 114 19-147 1 1,2-Dichloroethane (EDC) mg/kg (ppm) 2.5 <0.05 86 89 12-160 3 1,1,1-Trichloroethane mg/kg (ppm) 2.5 <0.05 89 94 10-156 5 1,1-Dichloropropene mg/kg (ppm) 2.5 <0.05 83 87 17-140 5 Carbon tetrachloride mg/kg (ppm) 2.5 <0.05 84 89 9-164 6 Benzene mg/kg (ppm) 2.5 <0.03 85 87 29-129 2 Trichloroethene mg/kg (ppm) 2.5 <0.02 89 92 21-139 3 1,2-Dichloropropane mg/kg (ppm) 2.5 <0.05 84 86 30-135 2 Bromodichloromethane mg/kg (ppm) 2.5 <0.05 91 95 23-155 4 Dibromomethane mg/kg (ppm) 2.5 <0.05 92 93 23-145 1 4-Methyl-2-pentanone mg/kg (ppm) 12.5 <0.5 89 90 24-155 1 cis-1,3-Dichloropropene mg/kg (ppm) 2.5 <0.05 89 90 28-144 1 Toluene mg/kg (ppm) 2.5 <0.05 87 89 35-130 2 trans-1,3-Dichloropropene mg/kg (ppm) 2.5 <0.05 89 91 26-149 2 1,1,2-Trichloroethane mg/kg (ppm) 2.5 <0.05 89 91 10-205 2 2-Hexanone mg/kg (ppm) 12.5 <0.5 106 105 15-166 1 1,3-Dichloropropane mg/kg (ppm) 2.5 <0.05 89 90 31-137 1 Tetrachloroethene mg/kg (ppm) 2.5 <0.025 93 94 20-133 1 Dibromochloromethane mg/kg (ppm) 2.5 <0.05 94 97 28-150 3 1,2-Dibromoethane (EDB) mg/kg (ppm) 2.5 <0.05 90 92 28-142 2 Chlorobenzene mg/kg (ppm) 2.5 <0.05 90 92 32-129 2 Ethylbenzene mg/kg (ppm) 2.5 <0.05 90 93 32-137 3 1,1,1,2-Tetrachloroethane mg/kg (ppm) 2.5 <0.05 96 98 31-143 2 m,p-Xylene mg/kg (ppm) 5 <0.1 90 93 34-136 3 o-Xylene mg/kg (ppm) 2.5 <0.05 90 94 33-134 4 Styrene mg/kg (ppm) 2.5 <0.05 91 94 35-137 3 Isopropylbenzene mg/kg (ppm) 2.5 <0.05 92 95 31-142 3 Bromoform mg/kg (ppm) 2.5 <0.05 100 104 21-156 4 n-Propylbenzene mg/kg (ppm) 2.5 <0.05 90 93 23-146 3 Bromobenzene mg/kg (ppm) 2.5 <0.05 92 95 34-130 3 1,3,5-Trimethylbenzene mg/kg (ppm) 2.5 <0.05 91 95 18-149 4 1,1,2,2-Tetrachloroethane mg/kg (ppm) 2.5 <0.05 94 96 28-140 2 1,2,3-Trichloropropane mg/kg (ppm) 2.5 <0.05 91 93 25-144 2 2-Chlorotoluene mg/kg (ppm) 2.5 <0.05 91 94 31-134 3 4-Chlorotoluene mg/kg (ppm) 2.5 <0.05 90 93 31-136 3 tert-Butylbenzene mg/kg (ppm) 2.5 <0.05 95 99 30-137 4 1,2,4-Trimethylbenzene mg/kg (ppm) 2.5 <0.05 92 95 10-182 3 sec-Butylbenzene mg/kg (ppm) 2.5 <0.05 93 96 23-145 3 p-Isopropyltoluene mg/kg (ppm) 2.5 <0.05 91 95 21-149 4 1,3-Dichlorobenzene mg/kg (ppm) 2.5 <0.05 93 97 30-131 4 1,4-Dichlorobenzene mg/kg (ppm) 2.5 <0.05 91 96 29-129 5 1,2-Dichlorobenzene mg/kg (ppm) 2.5 <0.05 95 99 31-132 4 1,2-Dibromo-3-chloropropane mg/kg (ppm) 2.5 <0.5 91 95 11-161 4 1,2,4-Trichlorobenzene mg/kg (ppm) 2.5 <0.25 95 102 22-142 7 Hexachlorobutadiene mg/kg (ppm) 2.5 <0.25 95 104 10-142 9 Naphthalene mg/kg (ppm) 2.5 <0.05 92 99 14-157 7 1,2,3-Trichlorobenzene mg/kg (ppm) 2.5 <0.25 95 102 20-144 7 17 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/23/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909209 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Analyte Units Level LCS Criteria Dichlorodifluoromethane mg/kg (ppm) 2.5 62 10-146 Chloromethane mg/kg (ppm) 2.5 91 27-133 Vinyl chloride mg/kg (ppm) 2.5 92 22-139 Bromomethane mg/kg (ppm) 2.5 90 38-114 Chloroethane mg/kg (ppm) 2.5 104 9-163 Trichlorofluoromethane mg/kg (ppm) 2.5 101 10-196 Acetone mg/kg (ppm) 12.5 122 52-141 1,1-Dichloroethene mg/kg (ppm) 2.5 104 47-128 Hexane mg/kg (ppm) 2.5 87 43-142 Methylene chloride mg/kg (ppm) 2.5 104 42-132 Methyl t-butyl ether (MTBE) mg/kg (ppm) 2.5 108 60-123 trans-1,2-Dichloroethene mg/kg (ppm) 2.5 106 67-129 1,1-Dichloroethane mg/kg (ppm) 2.5 100 68-115 2,2-Dichloropropane mg/kg (ppm) 2.5 117 52-170 cis-1,2-Dichloroethene mg/kg (ppm) 2.5 103 72-127 Chloroform mg/kg (ppm) 2.5 104 66-120 2-Butanone (MEK) mg/kg (ppm) 12.5 110 72-127 1,2-Dichloroethane (EDC) mg/kg (ppm) 2.5 96 56-135 1,1,1-Trichloroethane mg/kg (ppm) 2.5 110 62-131 1,1-Dichloropropene mg/kg (ppm) 2.5 97 69-128 Carbon tetrachloride mg/kg (ppm) 2.5 108 60-139 Benzene mg/kg (ppm) 2.5 95 68-114 Trichloroethene mg/kg (ppm) 2.5 99 64-117 1,2-Dichloropropane mg/kg (ppm) 2.5 91 72-127 Bromodichloromethane mg/kg (ppm) 2.5 99 72-130 Dibromomethane mg/kg (ppm) 2.5 97 70-120 4-Methyl-2-pentanone mg/kg (ppm) 12.5 91 45-145 cis-1,3-Dichloropropene mg/kg (ppm) 2.5 93 75-136 Toluene mg/kg (ppm) 2.5 97 66-126 trans-1,3-Dichloropropene mg/kg (ppm) 2.5 93 72-132 1,1,2-Trichloroethane mg/kg (ppm) 2.5 94 75-113 2-Hexanone mg/kg (ppm) 12.5 97 33-152 1,3-Dichloropropane mg/kg (ppm) 2.5 91 72-130 Tetrachloroethene mg/kg (ppm) 2.5 105 72-114 Dibromochloromethane mg/kg (ppm) 2.5 104 74-125 1,2-Dibromoethane (EDB) mg/kg (ppm) 2.5 93 74-132 Chlorobenzene mg/kg (ppm) 2.5 97 76-111 Ethylbenzene mg/kg (ppm) 2.5 100 64-123 1,1,1,2-Tetrachloroethane mg/kg (ppm) 2.5 113 69-135 m,p-Xylene mg/kg (ppm) 5 100 78-122 o-Xylene mg/kg (ppm) 2.5 104 77-124 Styrene mg/kg (ppm) 2.5 97 74-126 Isopropylbenzene mg/kg (ppm) 2.5 106 76-127 Bromoform mg/kg (ppm) 2.5 111 56-132 n-Propylbenzene mg/kg (ppm) 2.5 101 74-124 Bromobenzene mg/kg (ppm) 2.5 100 72-122 1,3,5-Trimethylbenzene mg/kg (ppm) 2.5 105 76-126 1,1,2,2-Tetrachloroethane mg/kg (ppm) 2.5 102 56-143 1,2,3-Trichloropropane mg/kg (ppm) 2.5 98 61-137 2-Chlorotoluene mg/kg (ppm) 2.5 104 74-121 4-Chlorotoluene mg/kg (ppm) 2.5 98 75-122 tert-Butylbenzene mg/kg (ppm) 2.5 109 73-130 1,2,4-Trimethylbenzene mg/kg (ppm) 2.5 104 76-125 sec-Butylbenzene mg/kg (ppm) 2.5 107 71-130 p-Isopropyltoluene mg/kg (ppm) 2.5 105 70-132 1,3-Dichlorobenzene mg/kg (ppm) 2.5 101 75-121 1,4-Dichlorobenzene mg/kg (ppm) 2.5 98 74-117 1,2-Dichlorobenzene mg/kg (ppm) 2.5 106 76-121 1,2-Dibromo-3-chloropropane mg/kg (ppm) 2.5 108 58-138 1,2,4-Trichlorobenzene mg/kg (ppm) 2.5 112 64-135 Hexachlorobutadiene mg/kg (ppm) 2.5 117 50-153 Naphthalene mg/kg (ppm) 2.5 110 63-140 1,2,3-Trichlorobenzene mg/kg (ppm) 2.5 118 63-138 18 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningful. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fb - The analyte was detected in the method blank. fc - The analyte is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. ht â€“ The analysis was performed outside the method or client-specified holding time requirement. ip - Recovery fell outside of control limits due to sample matrix effects. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery and/or RPD were out of control limits. The reported concentration should be considered an estimate. js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. pc - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 19 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. 3012 16th Avenue West Yelena Aravkina, M.S. Seattle, WA 98119-2029 Michael Erdahl, B.S. (206) 285-8282 Arina Podnozova, B.S. fbi@isomedia.com Eric Young, B.S. www.friedmanandbruya.com September 30, 2019 Kellie Andrews, Project Manager Associated Earth Sciences, Inc. 911 5th Avenue, Suite 100 Kirkland, WA 98033 Dear Ms Andrews: Included are the additional results from the testing of material submitted on September 13, 2019 from the Arlington Residential 190211V002, F&BI 909216 project. There are 16 pages included in this report. We appreciate this opportunity to be of service to you and hope you will call if you have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures AE10930R.DOC FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on September 13, 2019 by Friedman & Bruya, Inc. from the Associated Earth Sciences Arlington Residential 190211V002, F&BI 909216 project. Samples were logged in under the laboratory IDâ€™s listed below. Laboratory ID Associated Earth Sciences 909216 -01 EB-9-GW 909216 -02 EB-10-GW 909216 -03 EB-11-GW 909216 -04 EB-13-GW The 8270D laboratory control sample, laboratory control sample duplicate, and the associated relative percent difference failed for several compounds. The data were flagged accordingly. All other quality control requirements were acceptable. 1 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/30/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909216 Date Extracted: 09/23/19 Date Analyzed: 09/23/19 RESULTS FROM THE ANALYSIS OF WATER SAMPLES FOR GASOLINE, DIESEL AND HEAVY OIL BY NWTPH-HCID Results Reported as Not Detected (ND) or Detected (D) THE DATA PROVIDED BELOW WAS PERFORMED PER THE GUIDELINES ESTABLISHED BY THE WASHINGTON DEPARTMENT OF ECOLOGY AND WERE NOT DESIGNED TO PROVIDE INFORMATION WITH REGARDS TO THE ACTUAL IDENTIFICATION OF ANY MATERIAL PRESENT Surrogate Sample ID Gasoline Diesel Heavy Oil (% Recovery) Laboratory ID (Limit 47-140) EB-10-GW ND ND ND 118 909216-02 EB-11-GW ND ND D 94 909216-03 EB-13-GW ND ND ND 107 909216-04 Method Blank ND ND ND 103 09-2341 MB ND - Material not detected at or above 0.2 mg/L gas, 0.5 mg/L diesel and 0.5 mg/L heavy oil. 2 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/30/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909216 Date Extracted: 09/23/19 Date Analyzed: 09/23/19 RESULTS FROM THE ANALYSIS OF WATER SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL AND MOTOR OIL USING METHOD NWTPH-Dx Results Reported as ug/L (ppb) Surrogate Sample ID Diesel Range Motor Oil Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 47-140) EB-11-GW 410 x 730 94 909216-03 Method Blank <50 <250 103 09-2341 MB 3 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-10-GW ht Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/25/19 Lab ID: 909216-02 Date Analyzed: 09/25/19 Data File: 092515.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: ya Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 30 15 99 Phenol-d6 19 11 65 Nitrobenzene-d5 91 50 150 2-Fluorobiphenyl 93 50 150 2,4,6-Tribromophenol 98 50 150 Terphenyl-d14 100 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 jl Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 jl 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 jl Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 jl 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 jl Benzoic acid <10 jl Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 jl Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 4 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-11-GW ht Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/25/19 Lab ID: 909216-03 Date Analyzed: 09/25/19 Data File: 092516.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: ya Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 24 15 99 Phenol-d6 16 11 65 Nitrobenzene-d5 67 50 150 2-Fluorobiphenyl 77 50 150 2,4,6-Tribromophenol 110 50 150 Terphenyl-d14 79 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 jl Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 jl 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 jl Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 jl 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 jl Benzoic acid <10 jl Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 jl Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 5 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-13-GW ht Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/25/19 Lab ID: 909216-04 Date Analyzed: 09/25/19 Data File: 092517.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: ya Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 18 15 99 Phenol-d6 13 11 65 Nitrobenzene-d5 82 50 150 2-Fluorobiphenyl 84 50 150 2,4,6-Tribromophenol 56 50 150 Terphenyl-d14 85 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 jl Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 jl 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 jl Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 jl 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 jl Benzoic acid <10 jl Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 jl Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 6 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/25/19 Lab ID: 09-2361 mb Date Analyzed: 09/25/19 Data File: 092513.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: ya Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 22 15 99 Phenol-d6 14 11 65 Nitrobenzene-d5 72 50 150 2-Fluorobiphenyl 82 50 150 2,4,6-Tribromophenol 85 50 150 Terphenyl-d14 109 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 jl Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 jl 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 jl Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 jl 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 jl Benzoic acid <10 jl Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 jl Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 7 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-10-GW Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/20/19 Lab ID: 909216-02 Date Analyzed: 09/20/19 Data File: 092031.D Matrix: Water Instrument: GCMS4 Units: ug/L (ppb) Operator: MS/AEN Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 100 57 121 Toluene-d8 98 63 127 4-Bromofluorobenzene 95 60 133 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 8 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-11-GW Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/20/19 Lab ID: 909216-03 Date Analyzed: 09/20/19 Data File: 092032.D Matrix: Water Instrument: GCMS4 Units: ug/L (ppb) Operator: MS/AEN Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 100 57 121 Toluene-d8 98 63 127 4-Bromofluorobenzene 95 60 133 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 9 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-13-GW Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/20/19 Lab ID: 909216-04 Date Analyzed: 09/20/19 Data File: 092033.D Matrix: Water Instrument: GCMS4 Units: ug/L (ppb) Operator: MS/AEN Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 99 57 121 Toluene-d8 97 63 127 4-Bromofluorobenzene 94 60 133 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 10 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V002 Date Extracted: 09/20/19 Lab ID: 09-2257 mb Date Analyzed: 09/20/19 Data File: 092010.D Matrix: Water Instrument: GCMS4 Units: ug/L (ppb) Operator: MS/AEN Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 100 57 121 Toluene-d8 98 63 127 4-Bromofluorobenzene 95 60 133 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 11 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/30/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909216 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL EXTENDED USING METHOD NWTPH-Dx Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Diesel Extended ug/L (ppb) 2,500 80 92 61-133 14 12 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/30/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909216 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR SEMIVOLATILES BY EPA METHOD 8270D Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Phenol ug/L (ppb) 5 16 18 10-86 12 Bis(2-chloroethyl) ether ug/L (ppb) 5 77 71 65-121 8 2-Chlorophenol ug/L (ppb) 5 61 56 vo 58-123 9 1,3-Dichlorobenzene ug/L (ppb) 5 69 61 vo 66-113 12 1,4-Dichlorobenzene ug/L (ppb) 5 72 60 vo 62-114 18 1,2-Dichlorobenzene ug/L (ppb) 5 73 64 63-115 13 Benzyl alcohol ug/L (ppb) 5 44 42 37-125 5 2,2'-Oxybis(1-chloropropane) ug/L (ppb) 5 76 73 70-130 4 2-Methylphenol ug/L (ppb) 5 50 53 38-119 6 Hexachloroethane ug/L (ppb) 5 71 61 vo 64-117 15 N-Nitroso-di-n-propylamine ug/L (ppb) 5 86 83 70-130 4 3-Methylphenol + 4-Methylphenol ug/L (ppb) 5 44 49 44-110 11 Nitrobenzene ug/L (ppb) 5 79 73 70-130 8 Isophorone ug/L (ppb) 5 104 98 70-130 6 2-Nitrophenol ug/L (ppb) 5 79 75 61-141 5 2,4-Dimethylphenol ug/L (ppb) 5 73 68 12-127 7 Benzoic acid ug/L (ppb) 32.5 11 7 vo 10-102 44 vo Bis(2-chloroethoxy)methane ug/L (ppb) 5 82 76 70-130 8 2,4-Dichlorophenol ug/L (ppb) 5 76 74 70-130 3 1,2,4-Trichlorobenzene ug/L (ppb) 5 74 69 vo 70-130 7 Naphthalene ug/L (ppb) 5 77 71 65-111 8 Hexachlorobutadiene ug/L (ppb) 5 71 65 65-115 9 4-Chloroaniline ug/L (ppb) 10 76 66 24-146 14 4-Chloro-3-methylphenol ug/L (ppb) 5 80 79 58-133 1 2-Methylnaphthalene ug/L (ppb) 5 81 76 70-130 6 1-Methylnaphthalene ug/L (ppb) 5 81 76 70-130 6 Hexachlorocyclopentadiene ug/L (ppb) 5 73 62 36-112 16 2,4,6-Trichlorophenol ug/L (ppb) 5 81 78 70-130 4 2,4,5-Trichlorophenol ug/L (ppb) 5 82 80 70-130 2 2-Chloronaphthalene ug/L (ppb) 5 79 75 70-130 5 2-Nitroaniline ug/L (ppb) 5 88 83 64-143 6 Dimethyl phthalate ug/L (ppb) 5 89 89 64-140 0 Acenaphthylene ug/L (ppb) 5 88 84 70-130 5 2,6-Dinitrotoluene ug/L (ppb) 5 95 94 70-130 1 3-Nitroaniline ug/L (ppb) 10 89 83 53-134 7 Acenaphthene ug/L (ppb) 5 84 81 65-122 4 2,4-Dinitrophenol ug/L (ppb) 5 88 76 58-139 15 Dibenzofuran ug/L (ppb) 5 88 84 70-130 5 2,4-Dinitrotoluene ug/L (ppb) 5 97 99 70-130 2 4-Nitrophenol ug/L (ppb) 5 25 23 10-89 8 Diethyl phthalate ug/L (ppb) 5 96 96 56-141 0 Fluorene ug/L (ppb) 5 92 89 70-130 3 4-Chlorophenyl phenyl ether ug/L (ppb) 5 88 85 70-130 3 N-Nitrosodiphenylamine ug/L (ppb) 5 86 87 70-130 1 4-Nitroaniline ug/L (ppb) 10 80 77 66-134 4 4,6-Dinitro-2-methylphenol ug/L (ppb) 5 90 82 69-138 9 4-Bromophenyl phenyl ether ug/L (ppb) 5 89 86 70-130 3 Hexachlorobenzene ug/L (ppb) 5 85 86 70-130 1 Pentachlorophenol ug/L (ppb) 5 68 vo 63 vo 70-130 8 Phenanthrene ug/L (ppb) 5 92 93 70-130 1 Anthracene ug/L (ppb) 5 92 94 70-130 2 Carbazole ug/L (ppb) 5 97 101 70-130 4 Di-n-butyl phthalate ug/L (ppb) 5 93 98 70-130 5 Fluoranthene ug/L (ppb) 5 98 101 70-130 3 Pyrene ug/L (ppb) 5 94 91 70-130 3 Benzyl butyl phthalate ug/L (ppb) 5 92 95 70-130 3 Benz(a)anthracene ug/L (ppb) 5 92 96 70-130 4 Chrysene ug/L (ppb) 5 93 96 70-130 3 Bis(2-ethylhexyl) phthalate ug/L (ppb) 5 87 94 63-139 8 Di-n-octyl phthalate ug/L (ppb) 5 74 77 67-147 4 Benzo(a)pyrene ug/L (ppb) 5 93 96 70-130 3 Benzo(b)fluoranthene ug/L (ppb) 5 91 91 70-130 0 Benzo(k)fluoranthene ug/L (ppb) 5 92 91 70-130 1 Indeno(1,2,3-cd)pyrene ug/L (ppb) 5 96 107 57-141 11 Dibenz(a,h)anthracene ug/L (ppb) 5 94 105 57-137 11 Benzo(g,h,i)perylene ug/L (ppb) 5 91 101 50-143 10 13 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/30/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909216 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: 909348-02 (Matrix Spike) Percent Reporting Spike Sample Recovery Acceptance Analyte Units Level Result MS Criteria Dichlorodifluoromethane ug/L (ppb) 50 <1 92 10-172 Chloromethane ug/L (ppb) 50 <10 94 25-166 Vinyl chloride ug/L (ppb) 50 <0.2 91 36-166 Bromomethane ug/L (ppb) 50 <1 101 47-169 Chloroethane ug/L (ppb) 50 <1 96 46-160 Trichlorofluoromethane ug/L (ppb) 50 <1 102 44-165 Acetone ug/L (ppb) 250 <50 68 10-182 1,1-Dichloroethene ug/L (ppb) 50 <1 99 60-136 Hexane ug/L (ppb) 50 <1 86 52-150 Methylene chloride ug/L (ppb) 50 <5 89 67-132 Methyl t-butyl ether (MTBE) ug/L (ppb) 50 <1 97 74-127 trans-1,2-Dichloroethene ug/L (ppb) 50 <1 96 72-129 1,1-Dichloroethane ug/L (ppb) 50 <1 91 70-128 2,2-Dichloropropane ug/L (ppb) 50 <1 95 36-154 cis-1,2-Dichloroethene ug/L (ppb) 50 <1 92 71-127 Chloroform ug/L (ppb) 50 <1 97 65-132 2-Butanone (MEK) ug/L (ppb) 250 <10 86 10-129 1,2-Dichloroethane (EDC) ug/L (ppb) 50 <1 96 48-149 1,1,1-Trichloroethane ug/L (ppb) 50 <1 102 60-146 1,1-Dichloropropene ug/L (ppb) 50 <1 93 69-133 Carbon tetrachloride ug/L (ppb) 50 <1 98 56-152 Benzene ug/L (ppb) 50 <0.35 92 76-125 Trichloroethene ug/L (ppb) 50 4.2 96 66-135 1,2-Dichloropropane ug/L (ppb) 50 <1 90 78-125 Bromodichloromethane ug/L (ppb) 50 <1 99 61-150 Dibromomethane ug/L (ppb) 50 <1 99 66-141 4-Methyl-2-pentanone ug/L (ppb) 250 <10 94 10-185 cis-1,3-Dichloropropene ug/L (ppb) 50 <1 96 72-132 Toluene ug/L (ppb) 50 <1 91 76-122 trans-1,3-Dichloropropene ug/L (ppb) 50 <1 93 76-130 1,1,2-Trichloroethane ug/L (ppb) 50 <1 94 68-131 2-Hexanone ug/L (ppb) 250 <10 87 10-185 1,3-Dichloropropane ug/L (ppb) 50 <1 93 71-128 Tetrachloroethene ug/L (ppb) 50 <1 98 10-226 Dibromochloromethane ug/L (ppb) 50 <1 101 70-139 1,2-Dibromoethane (EDB) ug/L (ppb) 50 <1 95 69-134 Chlorobenzene ug/L (ppb) 50 <1 94 77-122 Ethylbenzene ug/L (ppb) 50 <1 93 69-135 1,1,1,2-Tetrachloroethane ug/L (ppb) 50 <1 99 73-137 m,p-Xylene ug/L (ppb) 100 <2 94 69-135 o-Xylene ug/L (ppb) 50 <1 93 60-140 Styrene ug/L (ppb) 50 <1 88 71-133 Isopropylbenzene ug/L (ppb) 50 <1 96 65-142 Bromoform ug/L (ppb) 50 <1 108 65-142 n-Propylbenzene ug/L (ppb) 50 <1 93 58-144 Bromobenzene ug/L (ppb) 50 <1 96 75-124 1,3,5-Trimethylbenzene ug/L (ppb) 50 <1 94 66-137 1,1,2,2-Tetrachloroethane ug/L (ppb) 50 <1 98 51-154 1,2,3-Trichloropropane ug/L (ppb) 50 <1 95 53-150 2-Chlorotoluene ug/L (ppb) 50 <1 94 66-127 4-Chlorotoluene ug/L (ppb) 50 <1 93 65-130 tert-Butylbenzene ug/L (ppb) 50 <1 99 65-137 1,2,4-Trimethylbenzene ug/L (ppb) 50 <1 93 59-146 sec-Butylbenzene ug/L (ppb) 50 <1 95 64-140 p-Isopropyltoluene ug/L (ppb) 50 <1 93 65-141 1,3-Dichlorobenzene ug/L (ppb) 50 <1 96 72-123 1,4-Dichlorobenzene ug/L (ppb) 50 <1 95 69-126 1,2-Dichlorobenzene ug/L (ppb) 50 <1 98 69-128 1,2-Dibromo-3-chloropropane ug/L (ppb) 50 <10 98 32-164 1,2,4-Trichlorobenzene ug/L (ppb) 50 <1 98 66-136 Hexachlorobutadiene ug/L (ppb) 50 <1 98 60-143 Naphthalene ug/L (ppb) 50 <1 94 44-164 1,2,3-Trichlorobenzene ug/L (ppb) 50 <1 99 69-148 14 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/30/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909216 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Dichlorodifluoromethane ug/L (ppb) 50 100 96 25-158 4 Chloromethane ug/L (ppb) 50 106 96 45-156 10 Vinyl chloride ug/L (ppb) 50 103 97 50-154 6 Bromomethane ug/L (ppb) 50 115 111 55-143 4 Chloroethane ug/L (ppb) 50 108 103 58-146 5 Trichlorofluoromethane ug/L (ppb) 250 112 109 50-150 3 Acetone ug/L (ppb) 250 66 72 53-131 9 1,1-Dichloroethene ug/L (ppb) 50 108 106 67-136 2 Hexane ug/L (ppb) 50 93 97 57-137 4 Methylene chloride ug/L (ppb) 50 100 96 39-148 4 Methyl t-butyl ether (MTBE) ug/L (ppb) 50 104 102 64-147 2 trans-1,2-Dichloroethene ug/L (ppb) 50 105 103 68-128 2 1,1-Dichloroethane ug/L (ppb) 50 97 97 79-121 0 2,2-Dichloropropane ug/L (ppb) 50 115 109 55-143 5 cis-1,2-Dichloroethene ug/L (ppb) 50 100 100 80-123 0 Chloroform ug/L (ppb) 50 102 103 80-121 1 2-Butanone (MEK) ug/L (ppb) 250 80 90 57-149 12 1,2-Dichloroethane (EDC) ug/L (ppb) 50 95 99 73-132 4 1,1,1-Trichloroethane ug/L (ppb) 50 109 107 81-125 2 1,1-Dichloropropene ug/L (ppb) 50 97 99 77-129 2 Carbon tetrachloride ug/L (ppb) 50 106 105 75-158 1 Benzene ug/L (ppb) 50 95 97 69-134 2 Trichloroethene ug/L (ppb) 50 99 102 79-113 3 1,2-Dichloropropane ug/L (ppb) 50 91 95 77-123 4 Bromodichloromethane ug/L (ppb) 50 101 105 81-133 4 Dibromomethane ug/L (ppb) 50 98 104 82-125 6 4-Methyl-2-pentanone ug/L (ppb) 250 88 96 65-138 9 cis-1,3-Dichloropropene ug/L (ppb) 50 94 101 82-132 7 Toluene ug/L (ppb) 50 94 96 72-122 2 trans-1,3-Dichloropropene ug/L (ppb) 50 91 99 80-136 8 1,1,2-Trichloroethane ug/L (ppb) 50 91 97 75-124 6 2-Hexanone ug/L (ppb) 250 78 90 60-136 14 1,3-Dichloropropane ug/L (ppb) 50 88 96 76-126 9 Tetrachloroethene ug/L (ppb) 50 102 104 76-121 2 Dibromochloromethane ug/L (ppb) 50 101 106 84-133 5 1,2-Dibromoethane (EDB) ug/L (ppb) 50 90 99 82-115 10 Chlorobenzene ug/L (ppb) 50 96 99 83-114 3 Ethylbenzene ug/L (ppb) 50 97 99 77-124 2 1,1,1,2-Tetrachloroethane ug/L (ppb) 50 107 106 84-127 1 m,p-Xylene ug/L (ppb) 100 96 99 81-112 3 o-Xylene ug/L (ppb) 50 99 98 81-121 1 Styrene ug/L (ppb) 50 94 99 84-119 5 Isopropylbenzene ug/L (ppb) 50 102 101 80-117 1 Bromoform ug/L (ppb) 50 108 115 74-136 6 n-Propylbenzene ug/L (ppb) 50 100 99 74-126 1 Bromobenzene ug/L (ppb) 50 98 101 80-121 3 1,3,5-Trimethylbenzene ug/L (ppb) 50 103 101 78-123 2 1,1,2,2-Tetrachloroethane ug/L (ppb) 50 98 102 66-126 4 1,2,3-Trichloropropane ug/L (ppb) 50 93 99 67-124 6 2-Chlorotoluene ug/L (ppb) 50 102 101 77-127 1 4-Chlorotoluene ug/L (ppb) 50 97 99 78-128 2 tert-Butylbenzene ug/L (ppb) 50 109 104 80-123 5 1,2,4-Trimethylbenzene ug/L (ppb) 50 102 100 79-122 2 sec-Butylbenzene ug/L (ppb) 50 105 102 80-116 3 p-Isopropyltoluene ug/L (ppb) 50 103 100 81-123 3 1,3-Dichlorobenzene ug/L (ppb) 50 99 102 83-113 3 1,4-Dichlorobenzene ug/L (ppb) 50 97 100 83-107 3 1,2-Dichlorobenzene ug/L (ppb) 50 103 103 84-112 0 1,2-Dibromo-3-chloropropane ug/L (ppb) 50 99 105 57-141 6 1,2,4-Trichlorobenzene ug/L (ppb) 50 107 106 72-130 1 Hexachlorobutadiene ug/L (ppb) 50 110 108 53-141 2 Naphthalene ug/L (ppb) 50 102 102 64-133 0 1,2,3-Trichlorobenzene ug/L (ppb) 50 111 106 65-136 5 15 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningful. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fb - The analyte was detected in the method blank. fc - The analyte is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. ht â€“ The analysis was performed outside the method or client-specified holding time requirement. ip - Recovery fell outside of control limits due to sample matrix effects. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery and/or RPD were out of control limits. The reported concentration should be considered an estimate. js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. pc - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 16 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. 3012 16th Avenue West Yelena Aravkina, M.S. Seattle, WA 98119-2029 Michael Erdahl, B.S. (206) 285-8282 Arina Podnozova, B.S. fbi@isomedia.com Eric Young, B.S. www.friedmanandbruya.com September 23, 2019 Kellie Andrews, Project Manager Associated Earth Sciences, Inc. 911 5th Avenue, Suite 100 Kirkland, WA 98033 Dear Ms Andrews: Included are the results from the testing of material submitted on September 13, 2019 from the Arlington Residential 190211V002, F&BI 909216 project. There are 13 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days, or as directed by the Chain of Custody document. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures AE10923R.DOC FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on September 13, 2019 by Friedman & Bruya, Inc. from the Associated Earth Sciences Arlington Residential 190211V002, F&BI 909216 project. Samples were logged in under the laboratory IDâ€™s listed below. Laboratory ID Associated Earth Sciences 909216 -01 EB-9-GW 909216 -02 EB-10-GW 909216 -03 EB-11-GW 909216 -04 EB-13-GW All quality control requirements were acceptable. 1 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/23/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909216 Date Extracted: 09/16/19 Date Analyzed: 09/16/19 RESULTS FROM THE ANALYSIS OF WATER SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL AND MOTOR OIL USING METHOD NWTPH-Dx Results Reported as ug/L (ppb) Surrogate Sample ID Diesel Range Motor Oil Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 47-140) EB-9-GW 6,900 x 2,800 x 59 909216-01 Method Blank <50 <250 122 09-2284 2 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/23/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909216 Date Extracted: 09/16/19 Date Analyzed: 09/16/19 RESULTS FROM THE ANALYSIS OF WATER SAMPLES FOR GASOLINE, DIESEL AND HEAVY OIL BY NWTPH-HCID Results Reported as Not Detected (ND) or Detected (D) THE DATA PROVIDED BELOW WAS PERFORMED PER THE GUIDELINES ESTABLISHED BY THE WASHINGTON DEPARTMENT OF ECOLOGY AND WERE NOT DESIGNED TO PROVIDE INFORMATION WITH REGARDS TO THE ACTUAL IDENTIFICATION OF ANY MATERIAL PRESENT Surrogate Sample ID Gasoline Diesel Heavy Oil (% Recovery) Laboratory ID (Limit 47-140) EB-9-GW ND D x D x 59 909216-01 Method Blank ND ND ND 122 09-2284 MB ND - Material not detected at or above 0.2 mg/L gas, 0.5 mg/L diesel and 0.5 mg/L heavy oil. 3 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-9-GW Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/18/19 Lab ID: 909216-01 Date Analyzed: 09/18/19 Data File: 091813.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 22 15 99 Phenol-d6 6 ip 11 65 Nitrobenzene-d5 67 50 150 2-Fluorobiphenyl 58 50 150 2,4,6-Tribromophenol 87 50 150 Terphenyl-d14 63 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 Phenanthrene 0.031 Bis(2-chloroethoxy)methane <0.2 Anthracene 0.052 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate 3.0 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate 4.2 fc Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 4 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V002 Date Extracted: 09/18/19 Lab ID: 09-2293 mb Date Analyzed: 09/18/19 Data File: 091809.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 30 15 99 Phenol-d6 18 11 65 Nitrobenzene-d5 83 50 150 2-Fluorobiphenyl 80 50 150 2,4,6-Tribromophenol 77 50 150 Terphenyl-d14 90 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 5 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-9-GW Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/16/19 Lab ID: 909216-01 Date Analyzed: 09/16/19 Data File: 091611.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 102 50 150 Toluene-d8 99 50 150 4-Bromofluorobenzene 92 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene 980 ve 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene 5.2 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 6 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-9-GW Client: Associated Earth Sciences Date Received: 09/13/19 Project: Arlington Residential 190211V002 Date Extracted: 09/16/19 Lab ID: 909216-01 1/100 Date Analyzed: 09/17/19 Data File: 091722.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 104 50 150 Toluene-d8 99 50 150 4-Bromofluorobenzene 92 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <100 1,3-Dichloropropane <100 Chloromethane <1,000 Tetrachloroethene <100 Vinyl chloride <20 Dibromochloromethane <100 Bromomethane <100 1,2-Dibromoethane (EDB) <100 Chloroethane <100 Chlorobenzene <100 Trichlorofluoromethane <100 Ethylbenzene <100 Acetone <5,000 1,1,1,2-Tetrachloroethane <100 1,1-Dichloroethene <100 m,p-Xylene <200 Hexane <100 o-Xylene <100 Methylene chloride <500 Styrene <100 Methyl t-butyl ether (MTBE) <100 Isopropylbenzene <100 trans-1,2-Dichloroethene <100 Bromoform <100 1,1-Dichloroethane <100 n-Propylbenzene <100 2,2-Dichloropropane <100 Bromobenzene <100 cis-1,2-Dichloroethene <100 1,3,5-Trimethylbenzene <100 Chloroform <100 1,1,2,2-Tetrachloroethane <100 2-Butanone (MEK) <1,000 1,2,3-Trichloropropane <100 1,2-Dichloroethane (EDC) <100 2-Chlorotoluene <100 1,1,1-Trichloroethane <100 4-Chlorotoluene <100 1,1-Dichloropropene <100 tert-Butylbenzene <100 Carbon tetrachloride <100 1,2,4-Trimethylbenzene <100 Benzene <35 sec-Butylbenzene <100 Trichloroethene <100 p-Isopropyltoluene 1,500 1,2-Dichloropropane <100 1,3-Dichlorobenzene <100 Bromodichloromethane <100 1,4-Dichlorobenzene <100 Dibromomethane <100 1,2-Dichlorobenzene <100 4-Methyl-2-pentanone <1,000 1,2-Dibromo-3-chloropropane <1,000 cis-1,3-Dichloropropene <100 1,2,4-Trichlorobenzene <100 Toluene <100 Hexachlorobutadiene <100 trans-1,3-Dichloropropene <100 Naphthalene <100 1,1,2-Trichloroethane <100 1,2,3-Trichlorobenzene <100 2-Hexanone <1,000 7 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V002 Date Extracted: 09/16/19 Lab ID: 09-2247 mb Date Analyzed: 09/16/19 Data File: 091610.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 102 50 150 Toluene-d8 98 50 150 4-Bromofluorobenzene 95 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 8 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/23/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909216 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL EXTENDED USING METHOD NWTPH-Dx Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Diesel Extended ug/L (ppb) 2,500 100 104 61-133 4 9 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/23/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909216 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR SEMIVOLATILES BY EPA METHOD 8270D Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Phenol ug/L (ppb) 5 18 19 10-86 5 Bis(2-chloroethyl) ether ug/L (ppb) 5 85 87 65-121 2 2-Chlorophenol ug/L (ppb) 5 64 72 58-123 12 1,3-Dichlorobenzene ug/L (ppb) 5 78 79 66-113 1 1,4-Dichlorobenzene ug/L (ppb) 5 81 81 62-114 0 1,2-Dichlorobenzene ug/L (ppb) 5 83 86 63-115 4 Benzyl alcohol ug/L (ppb) 5 45 50 37-125 11 2,2'-Oxybis(1-chloropropane) ug/L (ppb) 5 86 89 70-130 3 2-Methylphenol ug/L (ppb) 5 57 62 38-119 8 Hexachloroethane ug/L (ppb) 5 81 79 64-117 2 N-Nitroso-di-n-propylamine ug/L (ppb) 5 97 99 70-130 2 3-Methylphenol + 4-Methylphenol ug/L (ppb) 5 47 51 44-110 8 Nitrobenzene ug/L (ppb) 5 88 90 70-130 2 Isophorone ug/L (ppb) 5 100 101 70-130 1 2-Nitrophenol ug/L (ppb) 5 89 95 61-141 7 2,4-Dimethylphenol ug/L (ppb) 5 77 83 12-127 7 Benzoic acid ug/L (ppb) 32.5 14 11 10-102 24 vo Bis(2-chloroethoxy)methane ug/L (ppb) 5 91 93 70-130 2 2,4-Dichlorophenol ug/L (ppb) 5 86 92 70-130 7 1,2,4-Trichlorobenzene ug/L (ppb) 5 83 85 70-130 2 Naphthalene ug/L (ppb) 5 83 85 65-111 2 Hexachlorobutadiene ug/L (ppb) 5 82 80 65-115 2 4-Chloroaniline ug/L (ppb) 10 66 76 24-146 14 4-Chloro-3-methylphenol ug/L (ppb) 5 86 93 58-133 8 2-Methylnaphthalene ug/L (ppb) 5 89 91 70-130 2 1-Methylnaphthalene ug/L (ppb) 5 90 92 70-130 2 Hexachlorocyclopentadiene ug/L (ppb) 5 86 88 36-112 2 2,4,6-Trichlorophenol ug/L (ppb) 5 93 95 70-130 2 2,4,5-Trichlorophenol ug/L (ppb) 5 95 95 70-130 0 2-Chloronaphthalene ug/L (ppb) 5 89 90 70-130 1 2-Nitroaniline ug/L (ppb) 5 93 98 64-143 5 Dimethyl phthalate ug/L (ppb) 5 93 96 64-140 3 Acenaphthylene ug/L (ppb) 5 96 97 70-130 1 2,6-Dinitrotoluene ug/L (ppb) 5 99 98 70-130 1 3-Nitroaniline ug/L (ppb) 10 81 95 53-134 16 Acenaphthene ug/L (ppb) 5 91 92 65-122 1 2,4-Dinitrophenol ug/L (ppb) 5 100 106 58-139 6 Dibenzofuran ug/L (ppb) 5 94 94 70-130 0 2,4-Dinitrotoluene ug/L (ppb) 5 99 102 70-130 3 4-Nitrophenol ug/L (ppb) 5 27 28 10-89 4 Diethyl phthalate ug/L (ppb) 5 102 102 56-141 0 Fluorene ug/L (ppb) 5 95 97 70-130 2 4-Chlorophenyl phenyl ether ug/L (ppb) 5 94 95 70-130 1 N-Nitrosodiphenylamine ug/L (ppb) 5 93 95 70-130 2 4-Nitroaniline ug/L (ppb) 10 82 90 66-134 9 4,6-Dinitro-2-methylphenol ug/L (ppb) 5 104 103 69-138 1 4-Bromophenyl phenyl ether ug/L (ppb) 5 94 96 70-130 2 Hexachlorobenzene ug/L (ppb) 5 91 93 70-130 2 Pentachlorophenol ug/L (ppb) 5 91 95 70-130 4 Phenanthrene ug/L (ppb) 5 95 96 70-130 1 Anthracene ug/L (ppb) 5 97 98 70-130 1 Carbazole ug/L (ppb) 5 106 108 70-130 2 Di-n-butyl phthalate ug/L (ppb) 5 101 102 70-130 1 Fluoranthene ug/L (ppb) 5 104 105 70-130 1 Pyrene ug/L (ppb) 5 89 94 70-130 5 Benzyl butyl phthalate ug/L (ppb) 5 97 100 70-130 3 Benz(a)anthracene ug/L (ppb) 5 97 99 70-130 2 Chrysene ug/L (ppb) 5 97 99 70-130 2 Bis(2-ethylhexyl) phthalate ug/L (ppb) 5 97 97 63-139 0 Di-n-octyl phthalate ug/L (ppb) 5 99 97 67-147 2 Benzo(a)pyrene ug/L (ppb) 5 96 98 70-130 2 Benzo(b)fluoranthene ug/L (ppb) 5 93 94 70-130 1 Benzo(k)fluoranthene ug/L (ppb) 5 94 95 70-130 1 Indeno(1,2,3-cd)pyrene ug/L (ppb) 5 96 98 57-141 2 Dibenz(a,h)anthracene ug/L (ppb) 5 94 95 57-137 1 Benzo(g,h,i)perylene ug/L (ppb) 5 90 92 50-143 2 10 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/23/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909216 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: 909204-02 (Matrix Spike) Percent Reporting Spike Sample Recovery Acceptance Analyte Units Level Result MS Criteria Dichlorodifluoromethane ug/L (ppb) 50 <1 119 55-137 Chloromethane ug/L (ppb) 50 <10 113 57-129 Vinyl chloride ug/L (ppb) 50 <0.2 120 61-139 Bromomethane ug/L (ppb) 50 <1 114 20-265 Chloroethane ug/L (ppb) 50 <1 118 55-149 Trichlorofluoromethane ug/L (ppb) 50 <1 118 65-137 Acetone ug/L (ppb) 250 <50 58 48-149 1,1-Dichloroethene ug/L (ppb) 50 <1 115 71-123 Hexane ug/L (ppb) 50 39 113 b 44-139 Methylene chloride ug/L (ppb) 50 <5 107 61-126 Methyl t-butyl ether (MTBE) ug/L (ppb) 50 <1 109 68-125 trans-1,2-Dichloroethene ug/L (ppb) 50 <1 112 72-122 1,1-Dichloroethane ug/L (ppb) 50 <1 109 79-113 2,2-Dichloropropane ug/L (ppb) 50 <1 104 48-157 cis-1,2-Dichloroethene ug/L (ppb) 50 <1 111 63-126 Chloroform ug/L (ppb) 50 <1 120 vo 77-117 2-Butanone (MEK) ug/L (ppb) 250 <10 81 70-135 1,2-Dichloroethane (EDC) ug/L (ppb) 50 <1 108 70-119 1,1,1-Trichloroethane ug/L (ppb) 50 <1 110 75-121 1,1-Dichloropropene ug/L (ppb) 50 <1 112 67-121 Carbon tetrachloride ug/L (ppb) 50 <1 115 70-132 Benzene ug/L (ppb) 50 <0.35 106 75-114 Trichloroethene ug/L (ppb) 50 <1 109 73-122 1,2-Dichloropropane ug/L (ppb) 50 <1 109 80-111 Bromodichloromethane ug/L (ppb) 50 <1 122 vo 78-117 Dibromomethane ug/L (ppb) 50 <1 107 73-125 4-Methyl-2-pentanone ug/L (ppb) 250 <10 119 79-140 cis-1,3-Dichloropropene ug/L (ppb) 50 <1 115 76-120 Toluene ug/L (ppb) 50 <1 103 73-117 trans-1,3-Dichloropropene ug/L (ppb) 50 <1 110 75-122 1,1,2-Trichloroethane ug/L (ppb) 50 <1 123 vo 81-116 2-Hexanone ug/L (ppb) 250 <10 103 74-127 1,3-Dichloropropane ug/L (ppb) 50 <1 101 80-113 Tetrachloroethene ug/L (ppb) 50 <1 102 40-155 Dibromochloromethane ug/L (ppb) 50 <1 116 69-129 1,2-Dibromoethane (EDB) ug/L (ppb) 50 <1 102 79-120 Chlorobenzene ug/L (ppb) 50 <1 99 75-115 Ethylbenzene ug/L (ppb) 50 6.2 104 66-124 1,1,1,2-Tetrachloroethane ug/L (ppb) 50 <1 112 76-130 m,p-Xylene ug/L (ppb) 100 <2 104 63-128 o-Xylene ug/L (ppb) 50 <1 105 64-129 Styrene ug/L (ppb) 50 <1 106 56-142 Isopropylbenzene ug/L (ppb) 50 4.4 108 74-122 Bromoform ug/L (ppb) 50 <1 116 49-138 n-Propylbenzene ug/L (ppb) 50 3.0 101 65-129 Bromobenzene ug/L (ppb) 50 <1 101 70-121 1,3,5-Trimethylbenzene ug/L (ppb) 50 <1 102 60-138 1,1,2,2-Tetrachloroethane ug/L (ppb) 50 <1 113 77-120 1,2,3-Trichloropropane ug/L (ppb) 50 <1 100 62-125 2-Chlorotoluene ug/L (ppb) 50 <1 100 40-159 4-Chlorotoluene ug/L (ppb) 50 <1 99 76-122 tert-Butylbenzene ug/L (ppb) 50 <1 106 74-125 1,2,4-Trimethylbenzene ug/L (ppb) 50 <1 102 59-136 sec-Butylbenzene ug/L (ppb) 50 9.0 104 69-127 p-Isopropyltoluene ug/L (ppb) 50 3.1 102 64-132 1,3-Dichlorobenzene ug/L (ppb) 50 <1 97 77-113 1,4-Dichlorobenzene ug/L (ppb) 50 <1 94 75-110 1,2-Dichlorobenzene ug/L (ppb) 50 <1 98 70-120 1,2-Dibromo-3-chloropropane ug/L (ppb) 50 <10 113 69-129 1,2,4-Trichlorobenzene ug/L (ppb) 50 <1 99 66-123 Hexachlorobutadiene ug/L (ppb) 50 <1 84 53-136 Naphthalene ug/L (ppb) 50 <1 109 60-145 1,2,3-Trichlorobenzene ug/L (ppb) 50 <1 98 59-130 11 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 09/23/19 Date Received: 09/13/19 Project: Arlington Residential 190211V002, F&BI 909216 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Dichlorodifluoromethane ug/L (ppb) 50 104 106 50-157 2 Chloromethane ug/L (ppb) 50 99 104 62-130 5 Vinyl chloride ug/L (ppb) 50 105 109 70-128 4 Bromomethane ug/L (ppb) 50 100 105 60-143 5 Chloroethane ug/L (ppb) 50 103 108 66-149 5 Trichlorofluoromethane ug/L (ppb) 50 107 112 65-138 5 Acetone ug/L (ppb) 250 59 52 44-145 13 1,1-Dichloroethene ug/L (ppb) 50 101 104 72-121 3 Hexane ug/L (ppb) 50 100 101 51-153 1 Methylene chloride ug/L (ppb) 50 92 91 63-132 1 Methyl t-butyl ether (MTBE) ug/L (ppb) 50 100 105 70-122 5 trans-1,2-Dichloroethene ug/L (ppb) 50 99 104 76-118 5 1,1-Dichloroethane ug/L (ppb) 50 98 102 77-119 4 2,2-Dichloropropane ug/L (ppb) 50 103 111 62-141 7 cis-1,2-Dichloroethene ug/L (ppb) 50 100 104 76-119 4 Chloroform ug/L (ppb) 50 102 106 78-117 4 2-Butanone (MEK) ug/L (ppb) 250 92 86 48-150 7 1,2-Dichloroethane (EDC) ug/L (ppb) 50 105 106 75-116 1 1,1,1-Trichloroethane ug/L (ppb) 50 106 110 80-116 4 1,1-Dichloropropene ug/L (ppb) 50 105 108 78-119 3 Carbon tetrachloride ug/L (ppb) 50 111 114 72-128 3 Benzene ug/L (ppb) 50 102 102 75-116 0 Trichloroethene ug/L (ppb) 50 103 104 72-119 1 1,2-Dichloropropane ug/L (ppb) 50 111 110 79-121 1 Bromodichloromethane ug/L (ppb) 50 117 117 76-120 0 Dibromomethane ug/L (ppb) 50 108 107 79-121 1 4-Methyl-2-pentanone ug/L (ppb) 250 121 115 54-153 5 cis-1,3-Dichloropropene ug/L (ppb) 50 123 120 76-128 2 Toluene ug/L (ppb) 50 102 102 79-115 0 trans-1,3-Dichloropropene ug/L (ppb) 50 121 116 76-128 4 1,1,2-Trichloroethane ug/L (ppb) 50 112 111 78-120 1 2-Hexanone ug/L (ppb) 250 108 107 49-147 1 1,3-Dichloropropane ug/L (ppb) 50 107 106 81-111 1 Tetrachloroethene ug/L (ppb) 50 102 103 78-109 1 Dibromochloromethane ug/L (ppb) 50 121 120 63-140 1 1,2-Dibromoethane (EDB) ug/L (ppb) 50 107 106 82-118 1 Chlorobenzene ug/L (ppb) 50 100 101 80-113 1 Ethylbenzene ug/L (ppb) 50 102 103 83-111 1 1,1,1,2-Tetrachloroethane ug/L (ppb) 50 107 110 76-125 3 m,p-Xylene ug/L (ppb) 100 103 104 81-112 1 o-Xylene ug/L (ppb) 50 99 101 81-117 2 Styrene ug/L (ppb) 50 105 108 83-121 3 Isopropylbenzene ug/L (ppb) 50 103 104 78-118 1 Bromoform ug/L (ppb) 50 125 124 40-161 1 n-Propylbenzene ug/L (ppb) 50 106 103 81-115 3 Bromobenzene ug/L (ppb) 50 106 104 80-113 2 1,3,5-Trimethylbenzene ug/L (ppb) 50 106 103 83-117 3 1,1,2,2-Tetrachloroethane ug/L (ppb) 50 106 105 79-118 1 1,2,3-Trichloropropane ug/L (ppb) 50 104 103 74-116 1 2-Chlorotoluene ug/L (ppb) 50 104 101 79-112 3 4-Chlorotoluene ug/L (ppb) 50 104 102 80-116 2 tert-Butylbenzene ug/L (ppb) 50 108 106 81-119 2 1,2,4-Trimethylbenzene ug/L (ppb) 50 105 103 81-121 2 sec-Butylbenzene ug/L (ppb) 50 109 106 83-123 3 p-Isopropyltoluene ug/L (ppb) 50 107 105 81-117 2 1,3-Dichlorobenzene ug/L (ppb) 50 100 99 80-115 1 1,4-Dichlorobenzene ug/L (ppb) 50 97 96 77-112 1 1,2-Dichlorobenzene ug/L (ppb) 50 98 97 79-115 1 1,2-Dibromo-3-chloropropane ug/L (ppb) 50 112 114 62-133 2 1,2,4-Trichlorobenzene ug/L (ppb) 50 99 97 75-119 2 Hexachlorobutadiene ug/L (ppb) 50 98 96 70-116 2 Naphthalene ug/L (ppb) 50 104 103 72-131 1 1,2,3-Trichlorobenzene ug/L (ppb) 50 101 98 74-122 3 12 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningful. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fb - The analyte was detected in the method blank. fc - The analyte is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. ht â€“ The analysis was performed outside the method or client-specified holding time requirement. ip - Recovery fell outside of control limits due to sample matrix effects. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery and/or RPD were out of control limits. The reported concentration should be considered an estimate. js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. pc - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 13 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. 3012 16th Avenue West Yelena Aravkina, M.S. Seattle, WA 98119-2029 Michael Erdahl, B.S. (206) 285-8282 Arina Podnozova, B.S. fbi@isomedia.com Eric Young, B.S. www.friedmanandbruya.com October 23, 2019 Tim Brown, Project Manager Associated Earth Sciences, Inc. 911 5th Avenue, Suite 100 Kirkland, WA 98033 Dear Mr Brown: Included are the results from the testing of material submitted on October 2, 2019 from the Arlington Residential 190211V003, F&BI 910061 project. There is 1 page included in this report. Any samples that may remain are currently scheduled for disposal in 30 days, or as directed by the Chain of Custody document. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures c: Kellie Andrews AE11023R.DOC FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on October 2, 2019 by Friedman & Bruya, Inc. from the Associated Earth Sciences Arlington Residential 190211V003, F&BI 910061 project. Samples were logged in under the laboratory IDâ€™s listed below. Laboratory ID Associated Earth Sciences 910061 -01 Lagoon-01 910061 -02 Lagoon-02 910061 -03 Lagoon-03 910061 -04 Lagoon-04 910061 -05 Lagoon-05 910061 -06 Lagoon-06 910061 -07 Lagoon-07 910061 -08 Lagoon-08 910061 -09 Lagoon-09 910061 -10 Lagoon-10 910061 -11 Lagoon-11 910061 -12 Lagoon-12 910061 -13 Lagoon-13 910061 -14 Lagoon-14 910061 -15 Lagoon-15 The samples were sent to Amtest for TKN, fecal coliform, nitrate and nitrite analyses. Review of the enclosed report indicates that all quality assurance were acceptable. 1 Am Test Inc. Professional 13600 NE 126TH PL Analytical Suite C Services Kirkland, WA 98034 (425) 885-1664 Oct 21 2019 Friedman & Bruya, Inc. 3012 16th Avenue West Seattle, WA 98119-2029 Attention: MICHAEL ERDAHL Dear MICHAEL ERDAHL: Enclosed please find the analytical data for your project. The following is a cross correlation of client and laboratory identifications for your convenience. CLIENT ID MATRIX AMTEST ID TEST LAGOON-01 Soil 19-A016253 Micro, NUT LAGOON-02 Soil 19-A016254 Micro, NUT LAGOON-03 Soil 19-A016255 Micro, NUT LAGOON-04 Soil 19-A016256 Micro, NUT LAGOON-05 Soil 19-A016257 Micro, NUT LAGOON-06 Soil 19-A016258 Micro, NUT LAGOON-07 Soil 19-A016259 Micro, NUT LAGOON-08 Soil 19-A016260 Micro, NUT LAGOON-09 Soil 19-A016261 Micro, NUT LAGOON-10 Soil 19-A016262 Micro, NUT LAGOON-11 Soil 19-A016263 Micro, NUT LAGOON-12 Soil 19-A016264 Micro, NUT LAGOON-13 Soil 19-A016265 Micro, NUT LAGOON-14 Soil 19-A016266 Micro, NUT LAGOON-15 Soil 19-A016267 Micro, NUT Your samples were received on Wednesday, October 2, 2019. At the time of receipt, the samples were logged in and properly maintained prior to the subsequent analysis. The analytical procedures used at AmTest are well documented and are typically derived from the protocols of the EPA, USDA, FDA or the Army Corps of Engineers. Following the analytical data you will find the Quality Control (QC) results. Please note that the detection limits that are listed in the body of the report refer to the Practical Quantitation Limits (PQL's), as opposed to the Method Detection Limits (MDL's). P.1 Am Test Inc. Professional 13600 NE 126TH PL Analytical Suite C Services Kirkland, WA 98034 (425) 885-1664 Oct 21 2019 Friedman & Bruya, Inc. continued . . . If you should have any questions pertaining to the data package, please feel free to contact me. Sincerely, Aaron W. Young Laboratory Manager Project #: 910061 PO Number: A-408 BACT = Bacteriological MET = Metals NUT=Nutrients MIN=Minerals CONV = Conventionals ORG = Organics DEM=Demand P.2 Am Test Inc. Professional 13600 NE 126TH PL Analytical Suite C Services Kirkland, WA 98034 (425) 885-1664 www.amtestlab.com ANALYSIS REPORT Friedman & Bruya, Inc. Date Received: 10/02/19 3012 16th Avenue West Date Reported: 10/21/19 Seattle, WA 98119-2029 Attention: MICHAEL ERDAHL Project #: 910061 PO Number: A-408 All results reported on an as received basis. _________________________________________________________________________________________________ AMTEST Identification Number 19-A016253 Client Identification LAGOON-01 Sampling Date 10/02/19, 09:10 P.3 Friedman & Bruya, Inc. Project Name: AmTest ID: 19-A016254 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016254 Client Identification LAGOON-02 Sampling Date 10/02/19, 09:13 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016255 Client Identification LAGOON-03 Sampling Date 10/02/19, 09:18 P.4 Friedman & Bruya, Inc. Project Name: AmTest ID: 19-A016256 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016256 Client Identification LAGOON-04 Sampling Date 10/02/19, 09:23 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016257 Client Identification LAGOON-05 Sampling Date 10/02/19, 09:28 P.5 Friedman & Bruya, Inc. Project Name: AmTest ID: 19-A016258 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016258 Client Identification LAGOON-06 Sampling Date 10/02/19, 09:33 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016259 Client Identification LAGOON-07 Sampling Date 10/02/19, 09:45 P.6 Friedman & Bruya, Inc. Project Name: AmTest ID: 19-A016260 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016260 Client Identification LAGOON-08 Sampling Date 10/02/19, 09:52 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016261 Client Identification LAGOON-09 Sampling Date 10/02/19, 10:05 P.7 Friedman & Bruya, Inc. Project Name: AmTest ID: 19-A016262 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016262 Client Identification LAGOON-10 Sampling Date 10/02/19, 10:10 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016263 Client Identification LAGOON-11 Sampling Date 10/02/19, 10:14 P.8 Friedman & Bruya, Inc. Project Name: AmTest ID: 19-A016264 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016264 Client Identification LAGOON-12 Sampling Date 10/02/19, 10:18 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016265 Client Identification LAGOON-13 Sampling Date 10/02/19, 10:28 P.9 Friedman & Bruya, Inc. Project Name: AmTest ID: 19-A016266 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016266 Client Identification LAGOON-14 Sampling Date 10/02/19, 10:33 _________________________________________________________________________________________________ AMTEST Identification Number 19-A016267 Client Identification LAGOON-15 Sampling Date 10/02/19, 10:45 _________________________________ Aaron W. Young Laboratory Manager P.10 Am Test Inc. Professional 13600 NE 126th PL Analytical Suite C Services Kirkland, WA, 98034 (425) 885-1664 www.amtestlab.com QC Summary for sample numbers: 19-A016253 to 19-A016267 DUPLICATES SAMPLE # ANALYTE UNITS SAMPLE VALUE DUP VALUE RPD 19-A016258 Total Nitrogen (TKN) ug/g 1900 1800 5.4 19-A016360 Total Nitrogen (TKN) ug/g < 5 < 5 19-A016258 Nitrate + Nitrite ug/g < 0.5 < 0.5 19-A016267 Nitrate + Nitrite ug/g < 0.5 < 0.5 MATRIX SPIKES SAMPLE # ANALYTE UNITS SAMPLE VALUE SMPL+ SPK SPK AMT RECOVERY 19-A016258 Nitrate + Nitrite ug/g < 0.5 63. 99. 63.64 % 19-A016267 Nitrate + Nitrite ug/g < 0.5 62. 93. 66.67 % STANDARD REFERENCE MATERIALS ANALYTE UNITS TRUE VALUE MEASURED VALUE RECOVERY Total Nitrogen (TKN) ug/g 10. 10. 100. % Nitrate + Nitrite ug/g 10. 9.7 97.0 % BLANKS ANALYTE UNITS RESULT Nitrate + Nitrite ug/g < 0.5 P.11 P.12 P.13 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. 3012 16th Avenue West Yelena Aravkina, M.S. Seattle, WA 98119-2029 Michael Erdahl, B.S. (206) 285-8282 Arina Podnozova, B.S. fbi@isomedia.com Eric Young, B.S. www.friedmanandbruya.com October 23, 2019 Kellie Andrews, Project Manager Associated Earth Sciences, Inc. 911 5th Avenue, Suite 100 Kirkland, WA 98033 Dear Ms Andrews: Included are the results from the testing of material submitted on October 4, 2019 from the Arlington Residential 190211V003, F&BI 910102 project. There is 1 page included in this report. Any samples that may remain are currently scheduled for disposal in 30 days, or as directed by the Chain of Custody document. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures AE11023R.DOC FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on October 4, 2019 by Friedman & Bruya, Inc. from the Associated Earth Sciences Arlington Residential 190211V003 project. Samples were logged in under the laboratory IDâ€™s listed below. Laboratory ID Associated Earth Sciences 910102 -01 Lagoon-GW Sample Lagoon-GW was sent to Amtest for TKN, fecal coliform, nitrate and nitrite analyses. Review of the enclosed report indicates that all quality assurance were acceptable. 1 Am Test Inc. Professional 13600 NE 126TH PL Analytical Suite C Services Kirkland, WA 98034 (425) 885-1664 Oct 21 2019 Friedman & Bruya, Inc. 3012 16th Avenue West Seattle, WA 98119-2029 Attention: MICHAEL ERDAHL Dear MICHAEL ERDAHL: Enclosed please find the analytical data for your 910102 project. The following is a cross correlation of client and laboratory identifications for your convenience. CLIENT ID MATRIX AMTEST ID TEST LAGOON-GW Water 19-A016404 Micro, NUT Your sample was received on Friday, October 4, 2019. At the time of receipt, the sample was logged in and properly maintained prior to the subsequent analysis. The analytical procedures used at AmTest are well documented and are typically derived from the protocols of the EPA, USDA, FDA or the Army Corps of Engineers. Following the analytical data you will find the Quality Control (QC) results. Please note that the detection limits that are listed in the body of the report refer to the Practical Quantitation Limits (PQL's), as opposed to the Method Detection Limits (MDL's). If you should have any questions pertaining to the data package, please feel free to contact me. Sincerely, Aaron W. Young Laboratory Manager PO Number: A-408 BACT = Bacteriological MET = Metals NUT=Nutrients MIN=Minerals CONV = Conventionals ORG = Organics DEM=Demand P.1 Am Test Inc. Professional 13600 NE 126TH PL Analytical Suite C Services Kirkland, WA 98034 (425) 885-1664 www.amtestlab.com ANALYSIS REPORT Friedman & Bruya, Inc. Date Received: 10/04/19 3012 16th Avenue West Date Reported: 10/21/19 Seattle, WA 98119-2029 Attention: MICHAEL ERDAHL Project Name: 910102 PO Number: A-408 All results reported on an as received basis. _________________________________________________________________________________________________ AMTEST Identification Number 19-A016404 Client Identification LAGOON-GW Sampling Date 10/04/19, 07:30 _________________________________ Aaron W. Young Laboratory Manager P.2 Am Test Inc. Professional 13600 NE 126th PL Analytical Suite C Services Kirkland, WA, 98034 (425) 885-1664 www.amtestlab.com QC Summary for sample number: 19-A016404 DUPLICATES SAMPLE # ANALYTE UNITS SAMPLE VALUE DUP VALUE RPD 19-A016383 Total Nitrogen (TKN) mg/l 11.2 13.4 18. 19-A016484 Total Nitrogen (TKN) mg/l 124. 120. 3.3 19-A016555 Total Nitrogen (TKN) mg/l 55.1 54.9 0.36 19-A016579 Total Nitrogen (TKN) mg/l < 0.2 0.199 19-A016585 Total Nitrogen (TKN) mg/l 0.559 0.569 1.8 19-A016586 Total Nitrogen (TKN) mg/l 0.501 0.521 3.9 19-A016172 Total Nitrate + Nitrite mg/l < 0.02 < 0.02 19-A016227 Total Nitrate + Nitrite mg/l 0.16 0.17 6.1 MATRIX SPIKES SAMPLE # ANALYTE UNITS SAMPLE VALUE SMPL+ SPK SPK AMT RECOVERY 19-A016383 Total Nitrogen (TKN) mg/l 11.2 29.2 20.0 90.00 % 19-A016555 Total Nitrogen (TKN) mg/l 55.1 104. 50.0 97.80 % 19-A016579 Total Nitrogen (TKN) mg/l < 0.2 2.15 2.00 107.50 % 19-A016585 Total Nitrogen (TKN) mg/l 0.559 2.51 2.00 97.55 % 19-A016586 Total Nitrogen (TKN) mg/l 0.501 2.24 2.00 86.95 % 19-A016172 Total Nitrate + Nitrite mg/l < 0.02 0.80 1.0 80.00 % 19-A016227 Total Nitrate + Nitrite mg/l 0.16 1.1 1.0 94.00 % STANDARD REFERENCE MATERIALS ANALYTE UNITS TRUE VALUE MEASURED VALUE RECOVERY Total Nitrogen (TKN) mg/l 1.00 0.999 99.9 % Total Nitrogen (TKN) mg/l 1.00 0.956 95.6 % Total Nitrate + Nitrite mg/l 1.0 1.1 110. % Total Nitrate + Nitrite mg/l 1.0 0.95 95.0 % Total Nitrate + Nitrite mg/l 1.0 0.89 89.0 % BLANKS ANALYTE UNITS RESULT Total Nitrogen (TKN) mg/l < 0.2 Total Nitrogen (TKN) mg/l < 0.2 Total Nitrate + Nitrite mg/l < 0.02 Total Nitrate + Nitrite mg/l < 0.02 Total Nitrate + Nitrite mg/l < 0.02 P.3 P.4 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. 3012 16th Avenue West Yelena Aravkina, M.S. Seattle, WA 98119-2029 Michael Erdahl, B.S. (206) 285-8282 Arina Podnozova, B.S. fbi@isomedia.com Eric Young, B.S. www.friedmanandbruya.com December 24, 2019 Ken Jennings, Project Manager Associated Earth Sciences, Inc. 911 5th Avenue, Suite 100 Kirkland, WA 98033 Dear Mr Jennings: Included are the results from the testing of material submitted on December 9, 2019 from the Arlington Residential 190211V004, F&BI 912146 project. There are 18 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days, or as directed by the Chain of Custody document. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures c: Kellie Andrews AE11224R.DOC FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on December 9, 2019 by Friedman & Bruya, Inc. from the Associated Earth Sciences Arlington Residential 190211V004, F&BI 912146 project. Samples were logged in under the laboratory IDâ€™s listed below. Laboratory ID Associated Earth Sciences 912146 -01 EB-15-8 912146 -02 EB-15-11 912146 -03 EB-15-13 912146 -04 EB-15-15.5 912146 -05 EB-16-5 912146 -06 EB-16-10 912146 -07 EB-16-15 912146 -08 EB-16-17.5 912146 -09 EB-16-20 912146 -10 EB-17-6 912146 -11 EB-17-8 912146 -12 EB-17-10 912146 -13 EB-17-13 912146 -14 EB-17-18 912146 -15 EB-17-21.5 912146 -16 EB-17-23 912146 -17 EB-17-26 1,1-Dichloroethane and 1,2-dichloroethane in the 8260C laboratory control sample exceeded the acceptance criteria. In addition, the matrix spike and matrix spike duplicate failed the relative percent difference for bromomethane and acetone. The analytes were not detected in the samples therefore the data were acceptable Hexachloroethane in the 8270D laboratory control sample failed the acceptance criteria. The data were flagged accordingly. All other quality control requirements were acceptable. 1 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/09/19 Project: Arlington Residential 190211V004, F&BI 912146 Date Extracted: 12/18/19 Date Analyzed: 12/18/19 RESULTS FROM THE ANALYSIS OF SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS GASOLINE USING METHOD NWTPH-Gx Results Reported on a Dry Weight Basis Results Reported as mg/kg (ppm) Surrogate Sample ID Gasoline Range (% Recovery) Laboratory ID (Limit 50-150) EB-15-13 <5 82 912146-03 EB-16-10 <5 76 912146-06 EB-17-13 <5 83 912146-13 Method Blank <5 77 09-2931 MB 2 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/09/19 Project: Arlington Residential 190211V004, F&BI 912146 Date Extracted: 12/18/19 Date Analyzed: 12/18/19 RESULTS FROM THE ANALYSIS OF SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL AND MOTOR OIL USING METHOD NWTPH-Dx Results Reported on a Dry Weight Basis Results Reported as mg/kg (ppm) Surrogate Sample ID Diesel Range Motor Oil Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 56-165) EB-15-13 <50 <250 78 912146-03 EB-16-10 <50 <250 79 912146-06 EB-17-13 <50 <250 78 912146-13 Method Blank <50 <250 78 09-3053 MB 3 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-15-13 Client: Associated Earth Sciences Date Received: 12/09/19 Project: Arlington Residential 190211V004 Date Extracted: 12/18/19 Lab ID: 912146-03 Date Analyzed: 12/18/19 Data File: 121810.D Matrix: Soil Instrument: GCMS8 Units: mg/kg (ppm) Dry Weight Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 54 50 150 Phenol-d6 61 50 150 Nitrobenzene-d5 56 50 150 2-Fluorobiphenyl 65 50 150 2,4,6-Tribromophenol 82 50 150 Terphenyl-d14 79 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Phenol <0.1 2,6-Dinitrotoluene <0.05 Bis(2-chloroethyl) ether <0.01 3-Nitroaniline <1 2-Chlorophenol <0.1 Acenaphthene <0.002 1,3-Dichlorobenzene <0.01 2,4-Dinitrophenol <0.3 1,4-Dichlorobenzene <0.01 Dibenzofuran <0.01 1,2-Dichlorobenzene <0.01 2,4-Dinitrotoluene <0.05 Benzyl alcohol <0.1 4-Nitrophenol <0.3 2,2â€™-Oxybis(1-chloropropane) <0.01 Diethyl phthalate <0.1 2-Methylphenol <0.1 Fluorene <0.002 Hexachloroethane <0.01 jl 4-Chlorophenyl phenyl ether <0.01 N-Nitroso-di-n-propylamine <0.01 N-Nitrosodiphenylamine <0.01 3-Methylphenol + 4-Methylphenol <0.2 4-Nitroaniline <1 Nitrobenzene <0.01 4,6-Dinitro-2-methylphenol <0.3 Isophorone <0.01 4-Bromophenyl phenyl ether <0.01 2-Nitrophenol <0.1 Hexachlorobenzene <0.01 2,4-Dimethylphenol <0.1 Pentachlorophenol <0.05 Benzoic acid <0.5 Phenanthrene <0.002 Bis(2-chloroethoxy)methane <0.01 Anthracene <0.002 2,4-Dichlorophenol <0.1 Carbazole <0.01 1,2,4-Trichlorobenzene <0.01 Di-n-butyl phthalate <0.1 Naphthalene <0.002 Fluoranthene <0.002 Hexachlorobutadiene <0.01 Pyrene <0.002 4-Chloroaniline <1 Benzyl butyl phthalate <0.1 4-Chloro-3-methylphenol <0.1 Benz(a)anthracene <0.002 2-Methylnaphthalene <0.002 Chrysene <0.002 1-Methylnaphthalene <0.002 Bis(2-ethylhexyl) phthalate <0.16 Hexachlorocyclopentadiene <0.03 Di-n-octyl phthalate <0.1 2,4,6-Trichlorophenol <0.1 Benzo(a)pyrene <0.002 2,4,5-Trichlorophenol <0.1 Benzo(b)fluoranthene <0.002 2-Chloronaphthalene <0.01 Benzo(k)fluoranthene <0.002 2-Nitroaniline <0.05 Indeno(1,2,3-cd)pyrene <0.002 Dimethyl phthalate <0.1 Dibenz(a,h)anthracene <0.002 Acenaphthylene <0.002 Benzo(g,h,i)perylene <0.002 4 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-16-10 Client: Associated Earth Sciences Date Received: 12/09/19 Project: Arlington Residential 190211V004 Date Extracted: 12/18/19 Lab ID: 912146-06 1/5 Date Analyzed: 12/18/19 Data File: 121811.D Matrix: Soil Instrument: GCMS8 Units: mg/kg (ppm) Dry Weight Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 81 50 150 Phenol-d6 87 50 150 Nitrobenzene-d5 83 50 150 2-Fluorobiphenyl 86 50 150 2,4,6-Tribromophenol 87 50 150 Terphenyl-d14 83 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Phenol <0.5 2,6-Dinitrotoluene <0.25 Bis(2-chloroethyl) ether <0.05 3-Nitroaniline <5 2-Chlorophenol <0.5 Acenaphthene <0.01 1,3-Dichlorobenzene <0.05 2,4-Dinitrophenol <1.5 1,4-Dichlorobenzene <0.05 Dibenzofuran <0.05 1,2-Dichlorobenzene <0.05 2,4-Dinitrotoluene <0.25 Benzyl alcohol <0.5 4-Nitrophenol <1.5 2,2â€™-Oxybis(1-chloropropane) <0.05 Diethyl phthalate <0.5 2-Methylphenol <0.5 Fluorene <0.01 Hexachloroethane <0.05 jl 4-Chlorophenyl phenyl ether <0.05 N-Nitroso-di-n-propylamine <0.05 N-Nitrosodiphenylamine <0.05 3-Methylphenol + 4-Methylphenol <1 4-Nitroaniline <5 Nitrobenzene <0.05 4,6-Dinitro-2-methylphenol <1.5 Isophorone <0.05 4-Bromophenyl phenyl ether <0.05 2-Nitrophenol <0.5 Hexachlorobenzene <0.05 2,4-Dimethylphenol <0.5 Pentachlorophenol <0.25 Benzoic acid <2.5 Phenanthrene <0.01 Bis(2-chloroethoxy)methane <0.05 Anthracene <0.01 2,4-Dichlorophenol <0.5 Carbazole <0.05 1,2,4-Trichlorobenzene <0.05 Di-n-butyl phthalate <0.5 Naphthalene <0.01 Fluoranthene <0.01 Hexachlorobutadiene <0.05 Pyrene <0.01 4-Chloroaniline <5 Benzyl butyl phthalate <0.5 4-Chloro-3-methylphenol <0.5 Benz(a)anthracene <0.01 2-Methylnaphthalene <0.01 Chrysene <0.01 1-Methylnaphthalene <0.01 Bis(2-ethylhexyl) phthalate <0.8 Hexachlorocyclopentadiene <0.15 Di-n-octyl phthalate <0.5 2,4,6-Trichlorophenol <0.5 Benzo(a)pyrene <0.01 2,4,5-Trichlorophenol <0.5 Benzo(b)fluoranthene <0.01 2-Chloronaphthalene <0.05 Benzo(k)fluoranthene <0.01 2-Nitroaniline <0.25 Indeno(1,2,3-cd)pyrene <0.01 Dimethyl phthalate <0.5 Dibenz(a,h)anthracene <0.01 Acenaphthylene <0.01 Benzo(g,h,i)perylene <0.01 5 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-17-13 Client: Associated Earth Sciences Date Received: 12/09/19 Project: Arlington Residential 190211V004 Date Extracted: 12/18/19 Lab ID: 912146-13 1/5 Date Analyzed: 12/18/19 Data File: 121812.D Matrix: Soil Instrument: GCMS8 Units: mg/kg (ppm) Dry Weight Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 77 50 150 Phenol-d6 85 50 150 Nitrobenzene-d5 83 50 150 2-Fluorobiphenyl 85 50 150 2,4,6-Tribromophenol 88 50 150 Terphenyl-d14 89 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Phenol <0.5 2,6-Dinitrotoluene <0.25 Bis(2-chloroethyl) ether <0.05 3-Nitroaniline <5 2-Chlorophenol <0.5 Acenaphthene <0.01 1,3-Dichlorobenzene <0.05 2,4-Dinitrophenol <1.5 1,4-Dichlorobenzene <0.05 Dibenzofuran <0.05 1,2-Dichlorobenzene <0.05 2,4-Dinitrotoluene <0.25 Benzyl alcohol <0.5 4-Nitrophenol <1.5 2,2â€™-Oxybis(1-chloropropane) <0.05 Diethyl phthalate <0.5 2-Methylphenol <0.5 Fluorene <0.01 Hexachloroethane <0.05 jl 4-Chlorophenyl phenyl ether <0.05 N-Nitroso-di-n-propylamine <0.05 N-Nitrosodiphenylamine <0.05 3-Methylphenol + 4-Methylphenol <1 4-Nitroaniline <5 Nitrobenzene <0.05 4,6-Dinitro-2-methylphenol <1.5 Isophorone <0.05 4-Bromophenyl phenyl ether <0.05 2-Nitrophenol <0.5 Hexachlorobenzene <0.05 2,4-Dimethylphenol <0.5 Pentachlorophenol <0.25 Benzoic acid <2.5 Phenanthrene <0.01 Bis(2-chloroethoxy)methane <0.05 Anthracene <0.01 2,4-Dichlorophenol <0.5 Carbazole <0.05 1,2,4-Trichlorobenzene <0.05 Di-n-butyl phthalate <0.5 Naphthalene <0.01 Fluoranthene <0.01 Hexachlorobutadiene <0.05 Pyrene <0.01 4-Chloroaniline <5 Benzyl butyl phthalate <0.5 4-Chloro-3-methylphenol <0.5 Benz(a)anthracene <0.01 2-Methylnaphthalene <0.01 Chrysene <0.01 1-Methylnaphthalene <0.01 Bis(2-ethylhexyl) phthalate <0.8 Hexachlorocyclopentadiene <0.15 Di-n-octyl phthalate <0.5 2,4,6-Trichlorophenol <0.5 Benzo(a)pyrene <0.01 2,4,5-Trichlorophenol <0.5 Benzo(b)fluoranthene <0.01 2-Chloronaphthalene <0.05 Benzo(k)fluoranthene <0.01 2-Nitroaniline <0.25 Indeno(1,2,3-cd)pyrene <0.01 Dimethyl phthalate <0.5 Dibenz(a,h)anthracene <0.01 Acenaphthylene <0.01 Benzo(g,h,i)perylene <0.01 6 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V004 Date Extracted: 12/18/19 Lab ID: 09-3054 mb Date Analyzed: 12/18/19 Data File: 121809.D Matrix: Soil Instrument: GCMS8 Units: mg/kg (ppm) Dry Weight Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 80 50 150 Phenol-d6 89 50 150 Nitrobenzene-d5 86 50 150 2-Fluorobiphenyl 92 50 150 2,4,6-Tribromophenol 95 50 150 Terphenyl-d14 93 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Phenol <0.1 2,6-Dinitrotoluene <0.05 Bis(2-chloroethyl) ether <0.01 3-Nitroaniline <1 2-Chlorophenol <0.1 Acenaphthene <0.002 1,3-Dichlorobenzene <0.01 2,4-Dinitrophenol <0.3 1,4-Dichlorobenzene <0.01 Dibenzofuran <0.01 1,2-Dichlorobenzene <0.01 2,4-Dinitrotoluene <0.05 Benzyl alcohol <0.1 4-Nitrophenol <0.3 2,2â€™-Oxybis(1-chloropropane) <0.01 Diethyl phthalate <0.1 2-Methylphenol <0.1 Fluorene <0.002 Hexachloroethane <0.01 jl 4-Chlorophenyl phenyl ether <0.01 N-Nitroso-di-n-propylamine <0.01 N-Nitrosodiphenylamine <0.01 3-Methylphenol + 4-Methylphenol <0.2 4-Nitroaniline <1 Nitrobenzene <0.01 4,6-Dinitro-2-methylphenol <0.3 Isophorone <0.01 4-Bromophenyl phenyl ether <0.01 2-Nitrophenol <0.1 Hexachlorobenzene <0.01 2,4-Dimethylphenol <0.1 Pentachlorophenol <0.05 Benzoic acid <0.5 Phenanthrene <0.002 Bis(2-chloroethoxy)methane <0.01 Anthracene <0.002 2,4-Dichlorophenol <0.1 Carbazole <0.01 1,2,4-Trichlorobenzene <0.01 Di-n-butyl phthalate <0.1 Naphthalene <0.002 Fluoranthene <0.002 Hexachlorobutadiene <0.01 Pyrene <0.002 4-Chloroaniline <1 Benzyl butyl phthalate <0.1 4-Chloro-3-methylphenol <0.1 Benz(a)anthracene <0.002 2-Methylnaphthalene <0.002 Chrysene <0.002 1-Methylnaphthalene <0.002 Bis(2-ethylhexyl) phthalate <0.16 Hexachlorocyclopentadiene <0.03 Di-n-octyl phthalate <0.1 2,4,6-Trichlorophenol <0.1 Benzo(a)pyrene <0.002 2,4,5-Trichlorophenol <0.1 Benzo(b)fluoranthene <0.002 2-Chloronaphthalene <0.01 Benzo(k)fluoranthene <0.002 2-Nitroaniline <0.05 Indeno(1,2,3-cd)pyrene <0.002 Dimethyl phthalate <0.1 Dibenz(a,h)anthracene <0.002 Acenaphthylene <0.002 Benzo(g,h,i)perylene <0.002 7 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-15-13 Client: Associated Earth Sciences Date Received: 12/09/19 Project: Arlington Residential 190211V004 Date Extracted: 12/16/19 Lab ID: 912146-03 Date Analyzed: 12/17/19 Data File: 121722.D Matrix: Soil Instrument: GCMS9 Units: mg/kg (ppm) Dry Weight Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 99 50 150 Toluene-d8 100 50 150 4-Bromofluorobenzene 107 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.5 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Hexane <0.25 o-Xylene <0.05 Methylene chloride <0.5 Styrene <0.05 Methyl t-butyl ether (MTBE) <0.05 Isopropylbenzene <0.05 trans-1,2-Dichloroethene <0.05 Bromoform <0.05 1,1-Dichloroethane <0.05 n-Propylbenzene <0.05 2,2-Dichloropropane <0.05 Bromobenzene <0.05 cis-1,2-Dichloroethene <0.05 1,3,5-Trimethylbenzene <0.05 Chloroform <0.05 1,1,2,2-Tetrachloroethane <0.05 2-Butanone (MEK) <0.5 1,2,3-Trichloropropane <0.05 1,2-Dichloroethane (EDC) <0.05 2-Chlorotoluene <0.05 1,1,1-Trichloroethane <0.05 4-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 tert-Butylbenzene <0.05 Carbon tetrachloride <0.05 1,2,4-Trimethylbenzene <0.05 Benzene <0.03 sec-Butylbenzene <0.05 Trichloroethene <0.02 p-Isopropyltoluene <0.05 1,2-Dichloropropane <0.05 1,3-Dichlorobenzene <0.05 Bromodichloromethane <0.05 1,4-Dichlorobenzene <0.05 Dibromomethane <0.05 1,2-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dibromo-3-chloropropane <0.5 cis-1,3-Dichloropropene <0.05 1,2,4-Trichlorobenzene <0.25 Toluene <0.05 Hexachlorobutadiene <0.25 trans-1,3-Dichloropropene <0.05 Naphthalene <0.05 1,1,2-Trichloroethane <0.05 1,2,3-Trichlorobenzene <0.25 2-Hexanone <0.5 8 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-16-10 Client: Associated Earth Sciences Date Received: 12/09/19 Project: Arlington Residential 190211V004 Date Extracted: 12/16/19 Lab ID: 912146-06 Date Analyzed: 12/17/19 Data File: 121723.D Matrix: Soil Instrument: GCMS9 Units: mg/kg (ppm) Dry Weight Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 99 50 150 Toluene-d8 98 50 150 4-Bromofluorobenzene 105 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.5 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Hexane <0.25 o-Xylene <0.05 Methylene chloride <0.5 Styrene <0.05 Methyl t-butyl ether (MTBE) <0.05 Isopropylbenzene <0.05 trans-1,2-Dichloroethene <0.05 Bromoform <0.05 1,1-Dichloroethane <0.05 n-Propylbenzene <0.05 2,2-Dichloropropane <0.05 Bromobenzene <0.05 cis-1,2-Dichloroethene <0.05 1,3,5-Trimethylbenzene <0.05 Chloroform <0.05 1,1,2,2-Tetrachloroethane <0.05 2-Butanone (MEK) <0.5 1,2,3-Trichloropropane <0.05 1,2-Dichloroethane (EDC) <0.05 2-Chlorotoluene <0.05 1,1,1-Trichloroethane <0.05 4-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 tert-Butylbenzene <0.05 Carbon tetrachloride <0.05 1,2,4-Trimethylbenzene <0.05 Benzene <0.03 sec-Butylbenzene <0.05 Trichloroethene <0.02 p-Isopropyltoluene <0.05 1,2-Dichloropropane <0.05 1,3-Dichlorobenzene <0.05 Bromodichloromethane <0.05 1,4-Dichlorobenzene <0.05 Dibromomethane <0.05 1,2-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dibromo-3-chloropropane <0.5 cis-1,3-Dichloropropene <0.05 1,2,4-Trichlorobenzene <0.25 Toluene <0.05 Hexachlorobutadiene <0.25 trans-1,3-Dichloropropene <0.05 Naphthalene <0.05 1,1,2-Trichloroethane <0.05 1,2,3-Trichlorobenzene <0.25 2-Hexanone <0.5 9 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-17-13 Client: Associated Earth Sciences Date Received: 12/09/19 Project: Arlington Residential 190211V004 Date Extracted: 12/16/19 Lab ID: 912146-13 Date Analyzed: 12/17/19 Data File: 121738.D Matrix: Soil Instrument: GCMS9 Units: mg/kg (ppm) Dry Weight Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 101 50 150 Toluene-d8 101 50 150 4-Bromofluorobenzene 110 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Dichlorodifluoromethane <0.5 1,3-Dichloropropane <0.05 Chloromethane <0.5 Tetrachloroethene <0.025 Vinyl chloride <0.05 Dibromochloromethane <0.05 Bromomethane <0.5 1,2-Dibromoethane (EDB) <0.05 Chloroethane <0.5 Chlorobenzene <0.05 Trichlorofluoromethane <0.5 Ethylbenzene <0.05 Acetone <0.5 1,1,1,2-Tetrachloroethane <0.05 1,1-Dichloroethene <0.05 m,p-Xylene <0.1 Hexane <0.25 o-Xylene <0.05 Methylene chloride <0.5 Styrene <0.05 Methyl t-butyl ether (MTBE) <0.05 Isopropylbenzene <0.05 trans-1,2-Dichloroethene <0.05 Bromoform <0.05 1,1-Dichloroethane <0.05 n-Propylbenzene <0.05 2,2-Dichloropropane <0.05 Bromobenzene <0.05 cis-1,2-Dichloroethene <0.05 1,3,5-Trimethylbenzene <0.05 Chloroform <0.05 1,1,2,2-Tetrachloroethane <0.05 2-Butanone (MEK) <0.5 1,2,3-Trichloropropane <0.05 1,2-Dichloroethane (EDC) <0.05 2-Chlorotoluene <0.05 1,1,1-Trichloroethane <0.05 4-Chlorotoluene <0.05 1,1-Dichloropropene <0.05 tert-Butylbenzene <0.05 Carbon tetrachloride <0.05 1,2,4-Trimethylbenzene <0.05 Benzene <0.03 sec-Butylbenzene <0.05 Trichloroethene <0.02 p-Isopropyltoluene <0.05 1,2-Dichloropropane <0.05 1,3-Dichlorobenzene <0.05 Bromodichloromethane <0.05 1,4-Dichlorobenzene <0.05 Dibromomethane <0.05 1,2-Dichlorobenzene <0.05 4-Methyl-2-pentanone <0.5 1,2-Dibromo-3-chloropropane <0.5 cis-1,3-Dichloropropene <0.05 1,2,4-Trichlorobenzene <0.25 Toluene <0.05 Hexachlorobutadiene <0.25 trans-1,3-Dichloropropene <0.05 Naphthalene <0.05 1,1,2-Trichloroethane <0.05 1,2,3-Trichlorobenzene <0.25 2-Hexanone <0.5 10 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V004 Date Extracted: 12/16/19 Lab ID: 09-3017 mb Date Analyzed: 12/17/19 Data File: 121713.D Matrix: Soil Instrument: GCMS9 Units: mg/kg (ppm) Dry Weight Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 100 50 150 Toluene-d8 98 50 150 4-Bromofluorobenzene 104 50 150 Concentration Concentration Compounds: mg/kg (ppm) Compounds: mg/kg (ppm) Ethanol <50 trans-1,3-Dichloropropene <0.05 Dichlorodifluoromethane <0.5 1,1,2-Trichloroethane <0.05 Chloromethane <0.5 2-Hexanone <0.5 Vinyl chloride <0.05 1,3-Dichloropropane <0.05 Bromomethane <0.5 Tetrachloroethene <0.025 Chloroethane <0.5 Dibromochloromethane <0.05 Trichlorofluoromethane <0.5 1,2-Dibromoethane (EDB) <0.05 2-Propanol <0.5 Chlorobenzene <0.05 Acetone <0.5 Ethylbenzene <0.05 1,1-Dichloroethene <0.05 1,1,1,2-Tetrachloroethane <0.05 Hexane <0.25 m,p-Xylene <0.1 Methylene chloride <0.5 o-Xylene <0.05 t-Butyl alcohol (TBA) <2.5 Styrene <0.05 Methyl t-butyl ether (MTBE) <0.05 Isopropylbenzene <0.05 trans-1,2-Dichloroethene <0.05 Bromoform <0.05 Diisopropyl ether (DIPE) <0.05 n-Propylbenzene <0.05 1,1-Dichloroethane <0.05 Bromobenzene <0.05 Ethyl t-butyl ether (ETBE) <0.05 1,3,5-Trimethylbenzene <0.05 2,2-Dichloropropane <0.05 1,1,2,2-Tetrachloroethane <0.05 cis-1,2-Dichloroethene <0.05 1,2,3-Trichloropropane <0.05 Chloroform <0.05 2-Chlorotoluene <0.05 2-Butanone (MEK) <0.5 4-Chlorotoluene <0.05 t-Amyl methyl ether (T... <0.05 tert-Butylbenzene <0.05 1,2-Dichloroethane (EDC) <0.05 1,2,4-Trimethylbenzene <0.05 1,1,1-Trichloroethane <0.05 sec-Butylbenzene <0.05 1,1-Dichloropropene <0.05 p-Isopropyltoluene <0.05 Carbon tetrachloride <0.05 1,3-Dichlorobenzene <0.05 Benzene <0.03 1,4-Dichlorobenzene <0.05 Trichloroethene <0.02 1,2-Dichlorobenzene <0.05 1,2-Dichloropropane <0.05 1,2-Dibromo-3-chloropropane <0.5 Bromodichloromethane <0.05 1,2,4-Trichlorobenzene <0.25 Dibromomethane <0.05 Hexachlorobutadiene <0.25 4-Methyl-2-pentanone <0.5 Naphthalene <0.05 cis-1,3-Dichloropropene <0.05 1,2,3-Trichlorobenzene <0.25 Toluene <0.05 11 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/09/19 Project: Arlington Residential 190211V004, F&BI 912146 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR TPH AS GASOLINE USING METHOD NWTPH-Gx Laboratory Code: 912263-01 (Duplicate) Sample Duplicate Reporting Result Result RPD Analyte Units (Wet Wt) (Wet Wt) (Limit 20) Gasoline mg/kg (ppm) <5 <5 nm Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Analyte Units Level LCS Criteria Gasoline mg/kg (ppm) 20 80 71-131 12 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/09/19 Project: Arlington Residential 190211V004, F&BI 912146 QUALITY ASSURANCE RESULTS FROM THE ANALYSIS OF SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL EXTENDED USING METHOD NWTPH-Dx Laboratory Code: 912180-09 (Matrix Spike) Sample Percent Percent Reporting Spike Result Recovery Recovery Acceptance RPD Analyte Units Level (Wet Wt) MS MSD Criteria (Limit 20) Diesel Extended mg/kg (ppm) 5,000 <50 86 88 63-146 2 Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Analyte Units Level LCS Criteria Diesel Extended mg/kg (ppm) 5,000 86 79-144 13 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/09/19 Project: Arlington Residential 190211V004, F&BI 912146 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR SEMIVOLATILES BY EPA METHOD 8270D Laboratory Code: 912146-03 (Matrix Spike) Sample Percent Reporting Spike Result Recovery Acceptance Analyte Units Level (Wet wt) MS Criteria Phenol mg/kg (ppm) 0.33 <0.1 68 50-150 Bis(2-chloroethyl) ether mg/kg (ppm) 0.33 <0.01 60 50-150 2-Chlorophenol mg/kg (ppm) 0.33 <0.1 63 50-150 1,3-Dichlorobenzene mg/kg (ppm) 0.33 <0.01 56 50-150 1,4-Dichlorobenzene mg/kg (ppm) 0.33 <0.01 56 50-150 1,2-Dichlorobenzene mg/kg (ppm) 0.33 <0.01 57 50-150 Benzyl alcohol mg/kg (ppm) 0.66 <0.1 72 50-150 2,2'-Oxybis(1-chloropropane) mg/kg (ppm) 0.33 <0.01 63 50-150 2-Methylphenol mg/kg (ppm) 0.33 <0.1 65 50-150 Hexachloroethane mg/kg (ppm) 0.33 <0.01 58 50-150 N-Nitroso-di-n-propylamine mg/kg (ppm) 0.33 <0.01 71 50-150 3-Methylphenol + 4-Methylphenol mg/kg (ppm) 0.33 <0.2 69 50-150 Nitrobenzene mg/kg (ppm) 0.33 <0.01 62 50-150 Isophorone mg/kg (ppm) 0.33 <0.01 69 50-150 2-Nitrophenol mg/kg (ppm) 0.33 <0.1 77 50-150 2,4-Dimethylphenol mg/kg (ppm) 0.33 <0.1 67 50-150 Benzoic acid mg/kg (ppm) 0.5 <0.5 51 50-150 Bis(2-chloroethoxy)methane mg/kg (ppm) 0.33 <0.01 66 50-150 2,4-Dichlorophenol mg/kg (ppm) 0.33 <0.1 66 50-150 1,2,4-Trichlorobenzene mg/kg (ppm) 0.33 <0.01 61 50-150 Naphthalene mg/kg (ppm) 0.33 <0.002 62 50-150 Hexachlorobutadiene mg/kg (ppm) 0.33 <0.01 58 50-150 4-Chloroaniline mg/kg (ppm) 0.66 <1 55 50-150 4-Chloro-3-methylphenol mg/kg (ppm) 0.33 <0.1 75 50-150 2-Methylnaphthalene mg/kg (ppm) 0.33 <0.002 66 50-150 1-Methylnaphthalene mg/kg (ppm) 0.33 <0.002 66 50-150 Hexachlorocyclopentadiene mg/kg (ppm) 0.33 <0.03 73 50-150 2,4,6-Trichlorophenol mg/kg (ppm) 0.33 <0.1 71 50-150 2,4,5-Trichlorophenol mg/kg (ppm) 0.33 <0.1 74 50-150 2-Chloronaphthalene mg/kg (ppm) 0.33 <0.01 67 50-150 2-Nitroaniline mg/kg (ppm) 0.66 <0.05 77 50-150 Dimethyl phthalate mg/kg (ppm) 0.33 <0.1 80 50-150 Acenaphthylene mg/kg (ppm) 0.33 <0.002 77 50-150 2,6-Dinitrotoluene mg/kg (ppm) 0.33 <0.05 80 50-150 3-Nitroaniline mg/kg (ppm) 0.66 <1 65 50-150 Acenaphthene mg/kg (ppm) 0.33 <0.002 72 50-150 2,4-Dinitrophenol mg/kg (ppm) 0.33 <0.3 78 50-150 Dibenzofuran mg/kg (ppm) 0.33 <0.01 75 50-150 2,4-Dinitrotoluene mg/kg (ppm) 0.33 <0.05 77 50-150 4-Nitrophenol mg/kg (ppm) 0.33 <0.3 84 50-150 Diethyl phthalate mg/kg (ppm) 0.33 <0.1 80 50-150 Fluorene mg/kg (ppm) 0.33 <0.002 78 50-150 4-Chlorophenyl phenyl ether mg/kg (ppm) 0.33 <0.01 74 50-150 N-Nitrosodiphenylamine mg/kg (ppm) 0.33 <0.01 75 50-150 4-Nitroaniline mg/kg (ppm) 0.66 <1 68 50-150 4,6-Dinitro-2-methylphenol mg/kg (ppm) 0.33 <0.3 90 50-150 4-Bromophenyl phenyl ether mg/kg (ppm) 0.33 <0.01 78 50-150 Hexachlorobenzene mg/kg (ppm) 0.33 <0.01 76 50-150 Pentachlorophenol mg/kg (ppm) 0.33 <0.05 84 50-150 Phenanthrene mg/kg (ppm) 0.33 <0.002 78 50-150 Anthracene mg/kg (ppm) 0.33 <0.002 76 50-150 Carbazole mg/kg (ppm) 0.33 <0.01 86 50-150 Di-n-butyl phthalate mg/kg (ppm) 0.33 <0.1 87 50-150 Fluoranthene mg/kg (ppm) 0.33 <0.002 84 50-150 Pyrene mg/kg (ppm) 0.33 <0.002 82 50-150 Benzyl butyl phthalate mg/kg (ppm) 0.33 <0.1 95 50-150 Benz(a)anthracene mg/kg (ppm) 0.33 <0.002 80 50-150 Chrysene mg/kg (ppm) 0.33 <0.002 80 50-150 Bis(2-ethylhexyl) phthalate mg/kg (ppm) 0.33 <0.16 86 50-150 Di-n-octyl phthalate mg/kg (ppm) 0.33 <0.1 95 50-150 Benzo(a)pyrene mg/kg (ppm) 0.33 <0.002 74 50-150 Benzo(b)fluoranthene mg/kg (ppm) 0.33 <0.002 73 50-150 Benzo(k)fluoranthene mg/kg (ppm) 0.33 <0.002 70 50-150 Indeno(1,2,3-cd)pyrene mg/kg (ppm) 0.33 <0.002 69 50-150 Dibenz(a,h)anthracene mg/kg (ppm) 0.33 <0.002 69 50-150 Benzo(g,h,i)perylene mg/kg (ppm) 0.33 <0.002 67 50-150 14 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/09/19 Project: Arlington Residential 190211V004, F&BI 912146 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR SEMIVOLATILES BY EPA METHOD 8270D Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Phenol mg/kg (ppm) 0.33 85 90 70-130 6 Bis(2-chloroethyl) ether mg/kg (ppm) 0.33 75 81 70-130 8 2-Chlorophenol mg/kg (ppm) 0.33 78 85 70-130 9 1,3-Dichlorobenzene mg/kg (ppm) 0.33 68 72 62-115 6 1,4-Dichlorobenzene mg/kg (ppm) 0.33 66 74 63-114 11 1,2-Dichlorobenzene mg/kg (ppm) 0.66 70 74 68-113 6 Benzyl alcohol mg/kg (ppm) 0.33 91 97 70-130 6 2,2'-Oxybis(1-chloropropane) mg/kg (ppm) 0.33 78 83 70-130 6 2-Methylphenol mg/kg (ppm) 0.33 83 88 70-130 6 Hexachloroethane mg/kg (ppm) 0.33 69 vo 76 70-130 10 N-Nitroso-di-n-propylamine mg/kg (ppm) 0.33 88 97 70-130 10 3-Methylphenol + 4-Methylphenol mg/kg (ppm) 0.33 86 93 70-130 8 Nitrobenzene mg/kg (ppm) 0.33 78 83 70-130 6 Isophorone mg/kg (ppm) 0.33 83 92 70-130 10 2-Nitrophenol mg/kg (ppm) 0.33 91 98 70-130 7 2,4-Dimethylphenol mg/kg (ppm) 0.33 81 87 58-118 7 Benzoic acid mg/kg (ppm) 0.5 107 122 61-153 13 Bis(2-chloroethoxy)methane mg/kg (ppm) 0.33 82 86 70-130 5 2,4-Dichlorophenol mg/kg (ppm) 0.33 82 89 70-130 8 1,2,4-Trichlorobenzene mg/kg (ppm) 0.33 72 78 70-130 8 Naphthalene mg/kg (ppm) 0.33 74 78 70-130 5 Hexachlorobutadiene mg/kg (ppm) 0.33 72 76 70-130 5 4-Chloroaniline mg/kg (ppm) 0.66 49 39 10-90 23 vo 4-Chloro-3-methylphenol mg/kg (ppm) 0.33 83 92 70-130 10 2-Methylnaphthalene mg/kg (ppm) 0.33 79 84 70-130 6 1-Methylnaphthalene mg/kg (ppm) 0.33 79 83 70-130 5 Hexachlorocyclopentadiene mg/kg (ppm) 0.33 82 98 48-154 18 2,4,6-Trichlorophenol mg/kg (ppm) 0.33 88 96 70-130 9 2,4,5-Trichlorophenol mg/kg (ppm) 0.33 88 96 70-130 9 2-Chloronaphthalene mg/kg (ppm) 0.33 83 89 70-130 7 2-Nitroaniline mg/kg (ppm) 0.66 89 94 70-130 5 Dimethyl phthalate mg/kg (ppm) 0.33 89 92 70-130 3 Acenaphthylene mg/kg (ppm) 0.33 90 95 70-130 5 2,6-Dinitrotoluene mg/kg (ppm) 0.33 88 92 70-130 4 3-Nitroaniline mg/kg (ppm) 0.66 71 71 54-104 0 Acenaphthene mg/kg (ppm) 0.33 84 87 70-130 4 2,4-Dinitrophenol mg/kg (ppm) 0.33 110 120 51-159 9 Dibenzofuran mg/kg (ppm) 0.33 87 90 70-130 3 2,4-Dinitrotoluene mg/kg (ppm) 0.33 89 93 70-130 4 4-Nitrophenol mg/kg (ppm) 0.33 103 112 60-146 8 Diethyl phthalate mg/kg (ppm) 0.33 89 91 63-133 2 Fluorene mg/kg (ppm) 0.33 88 90 70-130 2 4-Chlorophenyl phenyl ether mg/kg (ppm) 0.33 86 87 70-130 1 N-Nitrosodiphenylamine mg/kg (ppm) 0.33 84 83 70-130 1 4-Nitroaniline mg/kg (ppm) 0.66 77 78 50-124 1 4,6-Dinitro-2-methylphenol mg/kg (ppm) 0.33 105 113 68-139 7 4-Bromophenyl phenyl ether mg/kg (ppm) 0.33 90 93 43-167 3 Hexachlorobenzene mg/kg (ppm) 0.33 86 88 70-130 2 Pentachlorophenol mg/kg (ppm) 0.33 110 115 61-136 4 Phenanthrene mg/kg (ppm) 0.33 89 90 70-130 1 Anthracene mg/kg (ppm) 0.33 87 87 70-130 0 Carbazole mg/kg (ppm) 0.33 94 98 70-130 4 Di-n-butyl phthalate mg/kg (ppm) 0.33 100 101 70-130 1 Fluoranthene mg/kg (ppm) 0.33 98 99 70-130 1 Pyrene mg/kg (ppm) 0.33 94 93 70-130 1 Benzyl butyl phthalate mg/kg (ppm) 0.33 103 106 70-130 3 Benz(a)anthracene mg/kg (ppm) 0.33 92 94 70-130 2 Chrysene mg/kg (ppm) 0.33 93 95 70-130 2 Bis(2-ethylhexyl) phthalate mg/kg (ppm) 0.33 93 98 70-130 5 Di-n-octyl phthalate mg/kg (ppm) 0.33 93 94 J 57-156 1 Benzo(a)pyrene mg/kg (ppm) 0.33 85 86 J 70-130 1 Benzo(b)fluoranthene mg/kg (ppm) 0.33 84 82 J 70-130 2 Benzo(k)fluoranthene mg/kg (ppm) 0.33 84 83 J 70-130 1 Indeno(1,2,3-cd)pyrene mg/kg (ppm) 0.33 83 90 J 63-145 8 Dibenz(a,h)anthracene mg/kg (ppm) 0.33 80 87 J 60-150 8 Benzo(g,h,i)perylene mg/kg (ppm) 0.33 79 84 J 57-144 6 15 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/09/19 Project: Arlington Residential 190211V004, F&BI 912146 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: 912244-01 (Matrix Spike) Sample Percent Percent Reporting Spike Result Recovery Recovery Acceptance RPD Analyte Units Level (Wet wt) MS MSD Criteria (Limit 20) Dichlorodifluoromethane mg/kg (ppm) 2.5 <0.5 15 13 10-56 14 Chloromethane mg/kg (ppm) 2.5 <0.5 49 45 10-90 9 Vinyl chloride mg/kg (ppm) 2.5 <0.05 43 39 10-91 10 Bromomethane mg/kg (ppm) 2.5 <0.5 65 49 10-110 28 vo Chloroethane mg/kg (ppm) 2.5 <0.5 54 49 10-101 10 Trichlorofluoromethane mg/kg (ppm) 2.5 <0.5 41 38 10-95 8 Acetone mg/kg (ppm) 12.5 <0.5 125 96 11-141 26 vo 1,1-Dichloroethene mg/kg (ppm) 2.5 <0.05 56 51 22-107 9 Hexane mg/kg (ppm) 2.5 <0.25 38 33 10-95 14 Methylene chloride mg/kg (ppm) 2.5 <0.5 78 70 14-128 11 Methyl t-butyl ether (MTBE) mg/kg (ppm) 2.5 <0.05 90 82 17-134 9 trans-1,2-Dichloroethene mg/kg (ppm) 2.5 <0.05 70 65 13-112 7 1,1-Dichloroethane mg/kg (ppm) 2.5 <0.05 82 77 23-115 6 2,2-Dichloropropane mg/kg (ppm) 2.5 <0.05 71 63 18-117 12 cis-1,2-Dichloroethene mg/kg (ppm) 2.5 <0.05 77 73 25-120 5 Chloroform mg/kg (ppm) 2.5 <0.05 83 78 29-117 6 2-Butanone (MEK) mg/kg (ppm) 12.5 <0.5 109 100 20-133 9 1,2-Dichloroethane (EDC) mg/kg (ppm) 2.5 <0.05 91 85 22-124 7 1,1,1-Trichloroethane mg/kg (ppm) 2.5 <0.05 73 67 27-112 9 1,1-Dichloropropene mg/kg (ppm) 2.5 <0.05 71 66 26-107 7 Carbon tetrachloride mg/kg (ppm) 2.5 <0.05 67 61 28-126 9 Benzene mg/kg (ppm) 2.5 <0.03 74 70 26-114 6 Trichloroethene mg/kg (ppm) 2.5 <0.02 70 66 30-112 6 1,2-Dichloropropane mg/kg (ppm) 2.5 <0.05 84 78 31-119 7 Bromodichloromethane mg/kg (ppm) 2.5 <0.05 84 78 31-131 7 Dibromomethane mg/kg (ppm) 2.5 <0.05 77 72 27-124 7 4-Methyl-2-pentanone mg/kg (ppm) 12.5 <0.5 103 93 16-147 10 cis-1,3-Dichloropropene mg/kg (ppm) 2.5 <0.05 81 74 28-137 9 Toluene mg/kg (ppm) 2.5 <0.05 72 69 34-112 4 trans-1,3-Dichloropropene mg/kg (ppm) 2.5 <0.05 79 75 30-136 5 1,1,2-Trichloroethane mg/kg (ppm) 2.5 <0.05 87 81 32-126 7 2-Hexanone mg/kg (ppm) 12.5 <0.5 109 100 17-147 9 1,3-Dichloropropane mg/kg (ppm) 2.5 <0.05 84 77 29-125 9 Tetrachloroethene mg/kg (ppm) 2.5 <0.025 59 56 25-114 5 Dibromochloromethane mg/kg (ppm) 2.5 <0.05 75 70 32-143 7 1,2-Dibromoethane (EDB) mg/kg (ppm) 2.5 <0.05 78 75 32-126 4 Chlorobenzene mg/kg (ppm) 2.5 <0.05 73 69 37-113 6 Ethylbenzene mg/kg (ppm) 2.5 <0.05 73 69 34-115 6 1,1,1,2-Tetrachloroethane mg/kg (ppm) 2.5 <0.05 79 73 35-126 8 m,p-Xylene mg/kg (ppm) 5 <0.1 70 65 25-125 7 o-Xylene mg/kg (ppm) 2.5 <0.05 72 68 27-126 6 Styrene mg/kg (ppm) 2.5 <0.05 76 72 39-121 5 Isopropylbenzene mg/kg (ppm) 2.5 <0.05 72 67 34-123 7 Bromoform mg/kg (ppm) 2.5 <0.05 78 70 18-155 11 n-Propylbenzene mg/kg (ppm) 2.5 <0.05 70 66 31-120 6 Bromobenzene mg/kg (ppm) 2.5 <0.05 70 67 40-115 4 1,3,5-Trimethylbenzene mg/kg (ppm) 2.5 <0.05 67 63 24-130 6 1,1,2,2-Tetrachloroethane mg/kg (ppm) 2.5 <0.05 99 93 27-148 6 1,2,3-Trichloropropane mg/kg (ppm) 2.5 <0.05 94 89 33-123 5 2-Chlorotoluene mg/kg (ppm) 2.5 <0.05 73 69 39-110 6 4-Chlorotoluene mg/kg (ppm) 2.5 <0.05 70 67 39-111 4 tert-Butylbenzene mg/kg (ppm) 2.5 <0.05 70 66 36-116 6 1,2,4-Trimethylbenzene mg/kg (ppm) 2.5 <0.05 67 64 35-116 5 sec-Butylbenzene mg/kg (ppm) 2.5 <0.05 69 65 33-118 6 p-Isopropyltoluene mg/kg (ppm) 2.5 <0.05 66 62 32-119 6 1,3-Dichlorobenzene mg/kg (ppm) 2.5 <0.05 67 64 38-111 5 1,4-Dichlorobenzene mg/kg (ppm) 2.5 <0.05 67 63 39-109 6 1,2-Dichlorobenzene mg/kg (ppm) 2.5 <0.05 73 68 40-111 7 1,2-Dibromo-3-chloropropane mg/kg (ppm) 2.5 <0.5 98 90 44-112 9 1,2,4-Trichlorobenzene mg/kg (ppm) 2.5 <0.25 68 59 31-121 14 Hexachlorobutadiene mg/kg (ppm) 2.5 <0.25 65 56 24-128 15 Naphthalene mg/kg (ppm) 2.5 0.051 88 77 24-139 13 1,2,3-Trichlorobenzene mg/kg (ppm) 2.5 <0.25 76 65 35-117 16 16 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/24/19 Date Received: 12/09/19 Project: Arlington Residential 190211V004, F&BI 912146 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF SOIL SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Analyte Units Level LCS Criteria Dichlorodifluoromethane mg/kg (ppm) 2.5 55 10-76 Chloromethane mg/kg (ppm) 2.5 83 34-98 Vinyl chloride mg/kg (ppm) 2.5 81 42-107 Bromomethane mg/kg (ppm) 2.5 85 46-113 Chloroethane mg/kg (ppm) 2.5 87 47-115 Trichlorofluoromethane mg/kg (ppm) 2.5 81 53-112 Acetone mg/kg (ppm) 12.5 128 39-147 1,1-Dichloroethene mg/kg (ppm) 2.5 89 65-110 Hexane mg/kg (ppm) 2.5 102 55-107 Methylene chloride mg/kg (ppm) 2.5 106 50-127 Methyl t-butyl ether (MTBE) mg/kg (ppm) 2.5 102 72-122 trans-1,2-Dichloroethene mg/kg (ppm) 2.5 98 71-113 1,1-Dichloroethane mg/kg (ppm) 2.5 110 vo 74-109 2,2-Dichloropropane mg/kg (ppm) 2.5 90 63-145 cis-1,2-Dichloroethene mg/kg (ppm) 2.5 101 73-110 Chloroform mg/kg (ppm) 2.5 107 76-110 2-Butanone (MEK) mg/kg (ppm) 12.5 119 60-121 1,2-Dichloroethane (EDC) mg/kg (ppm) 2.5 115 vo 73-111 1,1,1-Trichloroethane mg/kg (ppm) 2.5 98 72-116 1,1-Dichloropropene mg/kg (ppm) 2.5 107 72-112 Carbon tetrachloride mg/kg (ppm) 2.5 93 67-123 Benzene mg/kg (ppm) 2.5 101 72-106 Trichloroethene mg/kg (ppm) 2.5 99 72-107 1,2-Dichloropropane mg/kg (ppm) 2.5 107 74-115 Bromodichloromethane mg/kg (ppm) 2.5 104 75-126 Dibromomethane mg/kg (ppm) 2.5 95 76-116 4-Methyl-2-pentanone mg/kg (ppm) 12.5 109 80-128 cis-1,3-Dichloropropene mg/kg (ppm) 2.5 102 71-138 Toluene mg/kg (ppm) 2.5 103 74-111 trans-1,3-Dichloropropene mg/kg (ppm) 2.5 103 73-124 1,1,2-Trichloroethane mg/kg (ppm) 2.5 107 76-118 2-Hexanone mg/kg (ppm) 12.5 119 67-123 1,3-Dichloropropane mg/kg (ppm) 2.5 106 75-118 Tetrachloroethene mg/kg (ppm) 2.5 96 73-111 Dibromochloromethane mg/kg (ppm) 2.5 94 64-152 1,2-Dibromoethane (EDB) mg/kg (ppm) 2.5 104 77-117 Chlorobenzene mg/kg (ppm) 2.5 101 76-109 Ethylbenzene mg/kg (ppm) 2.5 105 75-112 1,1,1,2-Tetrachloroethane mg/kg (ppm) 2.5 102 75-129 m,p-Xylene mg/kg (ppm) 5 102 77-115 o-Xylene mg/kg (ppm) 2.5 104 76-115 Styrene mg/kg (ppm) 2.5 104 76-119 Isopropylbenzene mg/kg (ppm) 2.5 105 76-120 Bromoform mg/kg (ppm) 2.5 93 50-174 n-Propylbenzene mg/kg (ppm) 2.5 109 77-115 Bromobenzene mg/kg (ppm) 2.5 100 76-112 1,3,5-Trimethylbenzene mg/kg (ppm) 2.5 106 77-121 1,1,2,2-Tetrachloroethane mg/kg (ppm) 2.5 118 74-121 1,2,3-Trichloropropane mg/kg (ppm) 2.5 115 73-117 2-Chlorotoluene mg/kg (ppm) 2.5 108 75-113 4-Chlorotoluene mg/kg (ppm) 2.5 106 77-115 tert-Butylbenzene mg/kg (ppm) 2.5 106 77-123 1,2,4-Trimethylbenzene mg/kg (ppm) 2.5 106 77-119 sec-Butylbenzene mg/kg (ppm) 2.5 108 78-120 p-Isopropyltoluene mg/kg (ppm) 2.5 106 77-120 1,3-Dichlorobenzene mg/kg (ppm) 2.5 102 76-112 1,4-Dichlorobenzene mg/kg (ppm) 2.5 101 74-109 1,2-Dichlorobenzene mg/kg (ppm) 2.5 103 75-114 1,2-Dibromo-3-chloropropane mg/kg (ppm) 2.5 120 68-122 1,2,4-Trichlorobenzene mg/kg (ppm) 2.5 107 75-122 Hexachlorobutadiene mg/kg (ppm) 2.5 102 74-130 Naphthalene mg/kg (ppm) 2.5 113 73-122 1,2,3-Trichlorobenzene mg/kg (ppm) 2.5 110 75-117 17 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningful. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fb - The analyte was detected in the method blank. fc - The analyte is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. ht â€“ The analysis was performed outside the method or client-specified holding time requirement. ip - Recovery fell outside of control limits due to sample matrix effects. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery and/or RPD were out of control limits. The reported concentration should be considered an estimate. js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. pc - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 18 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. 3012 16th Avenue West Yelena Aravkina, M.S. Seattle, WA 98119-2029 Michael Erdahl, B.S. (206) 285-8282 Arina Podnozova, B.S. fbi@isomedia.com Eric Young, B.S. www.friedmanandbruya.com December 19, 2019 Ken Jennings, Project Manager Associated Earth Sciences, Inc. 911 5th Avenue, Suite 100 Kirkland, WA 98033 Dear Mr Jennings: Included are the results from the testing of material submitted on December 11, 2019 from the Arlington Residential 190211V004, F&BI 912179 project. There are 11 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days, or as directed by the Chain of Custody document. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures c: Kellie Andrews AE11219R.DOC FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on December 11, 2019 by Friedman & Bruya, Inc. from the Associated Earth Sciences Arlington Residential 190211V004, F&BI 912179 project. Samples were logged in under the laboratory IDâ€™s listed below. Laboratory ID Associated Earth Sciences 912179 -01 EB-18-GW Several compounds in the 8270D laboratory control sample and laboratory control sample duplicate failed the acceptance criteria. The data were flagged accordingly. All other quality control requirements were acceptable. 1 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/19/19 Date Received: 12/11/19 Project: Arlington Residential 190211V004, F&BI 912179 Date Extracted: 12/12/19 Date Analyzed: 12/12/19 RESULTS FROM THE ANALYSIS OF WATER SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL AND MOTOR OIL USING METHOD NWTPH-Dx Results Reported as ug/L (ppb) Surrogate Sample ID Diesel Range Motor Oil Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 47-140) EB-18-GW 92 x <350 64 912179-01 1/1.4 Method Blank <50 <250 109 09-3025 MB2 2 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: EB-18-GW Client: Associated Earth Sciences Date Received: 12/11/19 Project: Arlington Residential 190211V004 Date Extracted: 12/11/19 Lab ID: 912179-01 Date Analyzed: 12/12/19 Data File: 121223.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 27 15 99 Phenol-d6 20 11 65 Nitrobenzene-d5 61 50 150 2-Fluorobiphenyl 71 50 150 2,4,6-Tribromophenol 99 50 150 Terphenyl-d14 81 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 jl 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 jl 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 3 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V004 Date Extracted: 12/11/19 Lab ID: 09-3005 mb Date Analyzed: 12/12/19 Data File: 121211.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 25 15 99 Phenol-d6 15 11 65 Nitrobenzene-d5 90 50 150 2-Fluorobiphenyl 92 50 150 2,4,6-Tribromophenol 84 50 150 Terphenyl-d14 91 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 jl 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 jl 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 4 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: EB-18-GW Client: Associated Earth Sciences Date Received: 12/11/19 Project: Arlington Residential 190211V004 Date Extracted: 12/12/19 Lab ID: 912179-01 Date Analyzed: 12/13/19 Data File: 121337.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 101 50 150 Toluene-d8 102 50 150 4-Bromofluorobenzene 107 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 5 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V004 Date Extracted: 12/12/19 Lab ID: 09-3014 mb Date Analyzed: 12/12/19 Data File: 121222.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 99 50 150 Toluene-d8 100 50 150 4-Bromofluorobenzene 104 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 6 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/19/19 Date Received: 12/11/19 Project: Arlington Residential 190211V004, F&BI 912179 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL EXTENDED USING METHOD NWTPH-Dx Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Diesel Extended ug/L (ppb) 2,500 100 108 63-142 8 7 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/19/19 Date Received: 12/11/19 Project: Arlington Residential 190211V004, F&BI 912179 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR SEMIVOLATILES BY EPA METHOD 8270D Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Phenol ug/L (ppb) 5 5 vo 6 vo 10-86 18 Bis(2-chloroethyl) ether ug/L (ppb) 5 86 87 65-121 1 2-Chlorophenol ug/L (ppb) 5 61 74 58-123 19 1,3-Dichlorobenzene ug/L (ppb) 5 78 80 66-113 3 1,4-Dichlorobenzene ug/L (ppb) 5 79 80 62-114 1 1,2-Dichlorobenzene ug/L (ppb) 5 80 81 63-115 1 Benzyl alcohol ug/L (ppb) 5 45 51 37-125 12 2,2'-Oxybis(1-chloropropane) ug/L (ppb) 5 85 85 70-130 0 2-Methylphenol ug/L (ppb) 5 45 53 38-119 16 Hexachloroethane ug/L (ppb) 5 82 83 64-117 1 N-Nitroso-di-n-propylamine ug/L (ppb) 5 89 87 70-130 2 3-Methylphenol + 4-Methylphenol ug/L (ppb) 5 36 vo 46 44-110 24 vo Nitrobenzene ug/L (ppb) 5 88 88 70-130 0 Isophorone ug/L (ppb) 5 89 89 70-130 0 2-Nitrophenol ug/L (ppb) 5 91 93 61-141 2 2,4-Dimethylphenol ug/L (ppb) 5 73 86 12-127 16 Benzoic acid ug/L (ppb) 32.5 14 15 10-102 7 Bis(2-chloroethoxy)methane ug/L (ppb) 5 87 89 70-130 2 2,4-Dichlorophenol ug/L (ppb) 5 77 84 70-130 9 1,2,4-Trichlorobenzene ug/L (ppb) 5 81 83 70-130 2 Naphthalene ug/L (ppb) 5 80 82 65-111 2 Hexachlorobutadiene ug/L (ppb) 5 81 81 65-115 0 4-Chloroaniline ug/L (ppb) 10 55 83 24-146 41 vo 4-Chloro-3-methylphenol ug/L (ppb) 5 63 77 58-133 20 2-Methylnaphthalene ug/L (ppb) 5 79 82 70-130 4 1-Methylnaphthalene ug/L (ppb) 5 78 81 70-130 4 Hexachlorocyclopentadiene ug/L (ppb) 5 98 91 36-112 7 2,4,6-Trichlorophenol ug/L (ppb) 5 85 86 70-130 1 2,4,5-Trichlorophenol ug/L (ppb) 5 85 86 70-130 1 2-Chloronaphthalene ug/L (ppb) 5 85 87 70-130 2 2-Nitroaniline ug/L (ppb) 5 88 93 64-143 6 Dimethyl phthalate ug/L (ppb) 5 90 95 64-140 5 Acenaphthylene ug/L (ppb) 5 91 93 70-130 2 2,6-Dinitrotoluene ug/L (ppb) 5 86 94 70-130 9 3-Nitroaniline ug/L (ppb) 10 63 89 53-134 34 vo Acenaphthene ug/L (ppb) 5 84 87 65-122 4 2,4-Dinitrophenol ug/L (ppb) 5 93 98 58-139 5 Dibenzofuran ug/L (ppb) 5 86 90 70-130 5 2,4-Dinitrotoluene ug/L (ppb) 5 84 93 70-130 10 4-Nitrophenol ug/L (ppb) 5 23 23 10-89 0 Diethyl phthalate ug/L (ppb) 5 85 92 56-141 8 Fluorene ug/L (ppb) 5 85 90 70-130 6 4-Chlorophenyl phenyl ether ug/L (ppb) 5 82 86 70-130 5 N-Nitrosodiphenylamine ug/L (ppb) 5 89 92 70-130 3 4-Nitroaniline ug/L (ppb) 10 79 92 66-134 15 4,6-Dinitro-2-methylphenol ug/L (ppb) 5 98 94 69-138 4 4-Bromophenyl phenyl ether ug/L (ppb) 5 90 94 70-130 4 Hexachlorobenzene ug/L (ppb) 5 86 89 70-130 3 Pentachlorophenol ug/L (ppb) 5 88 85 70-130 3 Phenanthrene ug/L (ppb) 5 87 93 70-130 7 Anthracene ug/L (ppb) 5 88 92 70-130 4 Carbazole ug/L (ppb) 5 97 101 70-130 4 Di-n-butyl phthalate ug/L (ppb) 5 73 74 70-130 1 Fluoranthene ug/L (ppb) 5 92 95 70-130 3 Pyrene ug/L (ppb) 5 95 99 70-130 4 Benzyl butyl phthalate ug/L (ppb) 5 92 96 70-130 4 Benz(a)anthracene ug/L (ppb) 5 88 92 70-130 4 Chrysene ug/L (ppb) 5 89 93 70-130 4 Bis(2-ethylhexyl) phthalate ug/L (ppb) 5 80 84 63-139 5 Di-n-octyl phthalate ug/L (ppb) 5 81 88 67-147 8 Benzo(a)pyrene ug/L (ppb) 5 85 88 70-130 3 Benzo(b)fluoranthene ug/L (ppb) 5 78 84 70-130 7 Benzo(k)fluoranthene ug/L (ppb) 5 78 81 70-130 4 Indeno(1,2,3-cd)pyrene ug/L (ppb) 5 80 84 57-141 5 Dibenz(a,h)anthracene ug/L (ppb) 5 80 83 57-137 4 Benzo(g,h,i)perylene ug/L (ppb) 5 80 84 50-143 5 8 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/19/19 Date Received: 12/11/19 Project: Arlington Residential 190211V004, F&BI 912179 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: 912198-01 (Matrix Spike) Percent Reporting Spike Sample Recovery Acceptance Analyte Units Level Result MS Criteria Dichlorodifluoromethane ug/L (ppb) 50 <1 114 55-137 Chloromethane ug/L (ppb) 50 <10 116 57-129 Vinyl chloride ug/L (ppb) 50 <0.2 107 61-139 Bromomethane ug/L (ppb) 50 <1 101 20-265 Chloroethane ug/L (ppb) 50 <1 99 55-149 Trichlorofluoromethane ug/L (ppb) 50 <1 95 65-137 Acetone ug/L (ppb) 250 <50 112 48-149 1,1-Dichloroethene ug/L (ppb) 50 <1 94 71-123 Hexane ug/L (ppb) 50 <1 100 44-139 Methylene chloride ug/L (ppb) 50 <5 114 61-126 Methyl t-butyl ether (MTBE) ug/L (ppb) 50 <1 103 68-125 trans-1,2-Dichloroethene ug/L (ppb) 50 <1 98 72-122 1,1-Dichloroethane ug/L (ppb) 50 <1 109 79-113 2,2-Dichloropropane ug/L (ppb) 50 <1 93 48-157 cis-1,2-Dichloroethene ug/L (ppb) 50 <1 101 63-126 Chloroform ug/L (ppb) 50 <1 105 77-117 2-Butanone (MEK) ug/L (ppb) 250 <10 119 70-135 1,2-Dichloroethane (EDC) ug/L (ppb) 50 <1 113 70-119 1,1,1-Trichloroethane ug/L (ppb) 50 <1 102 75-121 1,1-Dichloropropene ug/L (ppb) 50 <1 106 67-121 Carbon tetrachloride ug/L (ppb) 50 <1 104 70-132 Benzene ug/L (ppb) 50 <0.35 101 75-114 Trichloroethene ug/L (ppb) 50 <1 99 73-122 1,2-Dichloropropane ug/L (ppb) 50 <1 109 80-111 Bromodichloromethane ug/L (ppb) 50 <1 113 78-117 Dibromomethane ug/L (ppb) 50 <1 98 73-125 4-Methyl-2-pentanone ug/L (ppb) 250 <10 121 79-140 cis-1,3-Dichloropropene ug/L (ppb) 50 <1 110 76-120 Toluene ug/L (ppb) 50 <1 103 73-117 trans-1,3-Dichloropropene ug/L (ppb) 50 <1 112 75-122 1,1,2-Trichloroethane ug/L (ppb) 50 <1 109 81-116 2-Hexanone ug/L (ppb) 250 <10 122 74-127 1,3-Dichloropropane ug/L (ppb) 50 <1 105 80-113 Tetrachloroethene ug/L (ppb) 50 <1 96 40-155 Dibromochloromethane ug/L (ppb) 50 <1 105 69-129 1,2-Dibromoethane (EDB) ug/L (ppb) 50 <1 106 79-120 Chlorobenzene ug/L (ppb) 50 <1 101 75-115 Ethylbenzene ug/L (ppb) 50 <1 106 66-124 1,1,1,2-Tetrachloroethane ug/L (ppb) 50 <1 109 76-130 m,p-Xylene ug/L (ppb) 100 <2 104 63-128 o-Xylene ug/L (ppb) 50 <1 106 64-129 Styrene ug/L (ppb) 50 <1 108 56-142 Isopropylbenzene ug/L (ppb) 50 <1 107 74-122 Bromoform ug/L (ppb) 50 <1 113 49-138 n-Propylbenzene ug/L (ppb) 50 <1 106 65-129 Bromobenzene ug/L (ppb) 50 <1 98 70-121 1,3,5-Trimethylbenzene ug/L (ppb) 50 <1 107 60-138 1,1,2,2-Tetrachloroethane ug/L (ppb) 50 <1 123 vo 77-120 1,2,3-Trichloropropane ug/L (ppb) 50 <1 116 62-125 2-Chlorotoluene ug/L (ppb) 50 <1 106 40-159 4-Chlorotoluene ug/L (ppb) 50 <1 105 76-122 tert-Butylbenzene ug/L (ppb) 50 <1 107 74-125 1,2,4-Trimethylbenzene ug/L (ppb) 50 1.6 104 59-136 sec-Butylbenzene ug/L (ppb) 50 <1 108 69-127 p-Isopropyltoluene ug/L (ppb) 50 <1 104 64-132 1,3-Dichlorobenzene ug/L (ppb) 50 <1 100 77-113 1,4-Dichlorobenzene ug/L (ppb) 50 <1 100 75-110 1,2-Dichlorobenzene ug/L (ppb) 50 <1 103 70-120 1,2-Dibromo-3-chloropropane ug/L (ppb) 50 <10 135 vo 69-129 1,2,4-Trichlorobenzene ug/L (ppb) 50 <1 104 66-123 Hexachlorobutadiene ug/L (ppb) 50 <1 87 53-136 Naphthalene ug/L (ppb) 50 1.1 116 60-145 1,2,3-Trichlorobenzene ug/L (ppb) 50 <1 107 59-130 9 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 12/19/19 Date Received: 12/11/19 Project: Arlington Residential 190211V004, F&BI 912179 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Dichlorodifluoromethane ug/L (ppb) 50 129 130 50-157 1 Chloromethane ug/L (ppb) 50 125 124 62-130 1 Vinyl chloride ug/L (ppb) 50 114 114 70-128 0 Bromomethane ug/L (ppb) 50 112 110 60-143 2 Chloroethane ug/L (ppb) 50 110 107 66-149 3 Trichlorofluoromethane ug/L (ppb) 50 105 101 65-138 4 Acetone ug/L (ppb) 250 124 102 44-145 19 1,1-Dichloroethene ug/L (ppb) 50 100 96 72-121 4 Hexane ug/L (ppb) 50 104 103 51-153 1 Methylene chloride ug/L (ppb) 50 122 115 63-132 6 Methyl t-butyl ether (MTBE) ug/L (ppb) 50 115 107 70-122 7 trans-1,2-Dichloroethene ug/L (ppb) 50 108 104 76-118 4 1,1-Dichloroethane ug/L (ppb) 50 113 110 77-119 3 2,2-Dichloropropane ug/L (ppb) 50 114 110 62-141 4 cis-1,2-Dichloroethene ug/L (ppb) 50 106 104 76-119 2 Chloroform ug/L (ppb) 50 109 107 78-117 2 2-Butanone (MEK) ug/L (ppb) 250 121 119 48-150 2 1,2-Dichloroethane (EDC) ug/L (ppb) 50 113 111 75-116 2 1,1,1-Trichloroethane ug/L (ppb) 50 113 111 80-116 2 1,1-Dichloropropene ug/L (ppb) 50 106 105 78-119 1 Carbon tetrachloride ug/L (ppb) 50 113 108 72-128 5 Benzene ug/L (ppb) 50 105 102 75-116 3 Trichloroethene ug/L (ppb) 50 100 98 72-119 2 1,2-Dichloropropane ug/L (ppb) 50 112 111 79-121 1 Bromodichloromethane ug/L (ppb) 50 114 113 76-120 1 Dibromomethane ug/L (ppb) 50 100 99 79-121 1 4-Methyl-2-pentanone ug/L (ppb) 250 124 123 54-153 1 cis-1,3-Dichloropropene ug/L (ppb) 50 111 109 76-128 2 Toluene ug/L (ppb) 50 106 104 79-115 2 trans-1,3-Dichloropropene ug/L (ppb) 50 111 110 76-128 1 1,1,2-Trichloroethane ug/L (ppb) 50 109 108 78-120 1 2-Hexanone ug/L (ppb) 250 121 122 49-147 1 1,3-Dichloropropane ug/L (ppb) 50 105 105 81-111 0 Tetrachloroethene ug/L (ppb) 50 99 98 78-109 1 Dibromochloromethane ug/L (ppb) 50 106 104 63-140 2 1,2-Dibromoethane (EDB) ug/L (ppb) 50 107 106 82-118 1 Chlorobenzene ug/L (ppb) 50 104 102 80-113 2 Ethylbenzene ug/L (ppb) 50 111 109 83-111 2 1,1,1,2-Tetrachloroethane ug/L (ppb) 50 117 112 76-125 4 m,p-Xylene ug/L (ppb) 100 110 108 81-112 2 o-Xylene ug/L (ppb) 50 113 109 81-117 4 Styrene ug/L (ppb) 50 113 110 83-121 3 Isopropylbenzene ug/L (ppb) 50 115 110 78-118 4 Bromoform ug/L (ppb) 50 117 114 40-161 3 n-Propylbenzene ug/L (ppb) 50 109 108 81-115 1 Bromobenzene ug/L (ppb) 50 99 99 80-113 0 1,3,5-Trimethylbenzene ug/L (ppb) 50 110 110 83-117 0 1,1,2,2-Tetrachloroethane ug/L (ppb) 50 121 vo 123 vo 79-118 2 1,2,3-Trichloropropane ug/L (ppb) 50 115 115 74-116 0 2-Chlorotoluene ug/L (ppb) 50 107 108 79-112 1 4-Chlorotoluene ug/L (ppb) 50 106 106 80-116 0 tert-Butylbenzene ug/L (ppb) 50 110 110 81-119 0 1,2,4-Trimethylbenzene ug/L (ppb) 50 108 108 81-121 0 sec-Butylbenzene ug/L (ppb) 50 113 111 83-123 2 p-Isopropyltoluene ug/L (ppb) 50 110 109 81-117 1 1,3-Dichlorobenzene ug/L (ppb) 50 103 102 80-115 1 1,4-Dichlorobenzene ug/L (ppb) 50 102 102 77-112 0 1,2-Dichlorobenzene ug/L (ppb) 50 106 105 79-115 1 1,2-Dibromo-3-chloropropane ug/L (ppb) 50 134 vo 135 vo 62-133 1 1,2,4-Trichlorobenzene ug/L (ppb) 50 109 106 75-119 3 Hexachlorobutadiene ug/L (ppb) 50 105 103 70-116 2 Naphthalene ug/L (ppb) 50 117 117 72-131 0 1,2,3-Trichlorobenzene ug/L (ppb) 50 113 111 74-122 2 10 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningful. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fb - The analyte was detected in the method blank. fc - The analyte is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. ht â€“ The analysis was performed outside the method or client-specified holding time requirement. ip - Recovery fell outside of control limits due to sample matrix effects. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery and/or RPD were out of control limits. The reported concentration should be considered an estimate. js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. pc - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 11 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. 3012 16th Avenue West Yelena Aravkina, M.S. Seattle, WA 98119-2029 Michael Erdahl, B.S. (206) 285-8282 Arina Podnozova, B.S. fbi@isomedia.com Eric Young, B.S. www.friedmanandbruya.com January 29, 2020 Ken Jennings, Project Manager Associated Earth Sciences, Inc. 911 5th Avenue, Suite 100 Kirkland, WA 98033 Dear Mr Jennings: Included are the additional results from the testing of material submitted on December 18, 2019 from the Arlington Residential 190211V004, F&BI 912311 project. There are 4 pages included in this report. We appreciate this opportunity to be of service to you and hope you will call if you have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures c: Kellie Andrews AE10129R.DOC FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on December 18, 2019 by Friedman & Bruya, Inc. from the Associated Earth Sciences Arlington Residential 190211V004, F&BI 912311 project. Samples were logged in under the laboratory IDâ€™s listed below. Laboratory ID Associated Earth Sciences 912311 -01 MW-4-20191217 912311 -02 MW-1-20191217 912311 -03 MW-3-20191217 912311 -04 MW-2-20191217 912311 -05 EB-1W-20191217 912311 -06 SEEP-20191217 All quality control requirements were acceptable. 1 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 01/29/20 Date Received: 12/18/19 Project: Arlington Residential 190211V004, F&BI 912311 Date Extracted: 12/19/19 Date Analyzed: 01/27/20 RESULTS FROM THE ANALYSIS OF WATER SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL AND MOTOR OIL USING METHOD NWTPH-Dx Sample Extracts Passed Through a Silica Gel Column Prior to Analysis Results Reported as ug/L (ppb) Surrogate Sample ID Diesel Range Motor Oil Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 41-152) SEEP-20191217 <95 <480 87 912311-06 1/1.9 Method Blank <50 <250 90 09-3058 MB2 2 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 01/29/20 Date Received: 12/18/19 Project: Arlington Residential 190211V004, F&BI 912311 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL EXTENDED USING METHOD NWTPH-Dx Laboratory Code: Laboratory Control Sample Silica Gel Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Diesel Extended ug/L (ppb) 2,500 96 92 61-133 4 3 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningful. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fb - The analyte was detected in the method blank. fc - The analyte is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. ht â€“ The analysis was performed outside the method or client-specified holding time requirement. ip - Recovery fell outside of control limits due to sample matrix effects. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery and/or RPD were out of control limits. The reported concentration should be considered an estimate. js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. pc - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 4 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. 3012 16th Avenue West Yelena Aravkina, M.S. Seattle, WA 98119-2029 Michael Erdahl, B.S. (206) 285-8282 Arina Podnozova, B.S. fbi@isomedia.com Eric Young, B.S. www.friedmanandbruya.com January 2, 2020 Ken Jennings, Project Manager Associated Earth Sciences, Inc. 911 5th Avenue, Suite 100 Kirkland, WA 98033 Dear Mr Jennings: Included are the results from the testing of material submitted on December 18, 2019 from the Arlington Residential 190211V004, F&BI 912311 project. There are 18 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days, or as directed by the Chain of Custody document. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures c: Kellie Andrews AE10102R.DOC FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on December 18, 2019 by Friedman & Bruya, Inc. from the Associated Earth Sciences Arlington Residential 190211V004, F&BI 912311 project. Samples were logged in under the laboratory IDâ€™s listed below. Laboratory ID Associated Earth Sciences 912311 -01 MW-4-20191217 912311 -02 MW-1-20191217 912311 -03 MW-3-20191217 912311 -04 MW-2-20191217 912311 -05 EB-IW-20191217 912311 -06 SEEP-20191217 3-Methylphenol + 4-methylphenol and benzoic acid in the 8270D laboratory control sample and laboratory control sample duplicate failed the acceptance criteria. The data were flagged accordingly. In addition, the relative percent difference failed for 2,4-dinitrophenol. The analyte was not detected in the samples therefore the data were acceptable. All other quality control requirements were acceptable. 1 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 01/02/20 Date Received: 12/18/19 Project: Arlington Residential 190211V004, F&BI 912311 Date Extracted: 12/19/19 Date Analyzed: 12/19/19 RESULTS FROM THE ANALYSIS OF WATER SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL AND MOTOR OIL USING METHOD NWTPH-Dx Results Reported as ug/L (ppb) Surrogate Sample ID Diesel Range Motor Oil Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 41-152) MW-4-20191217 <50 <250 82 912311-01 MW-1-20191217 <50 <250 88 912311-02 MW-3-20191217 <50 <250 86 912311-03 MW-2-20191217 <50 <250 85 912311-04 SEEP-20191217 <95 540 x 80 912311-06 Method Blank <50 <250 90 09-3058 MB2 2 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: MW-4-20191217 Client: Associated Earth Sciences Date Received: 12/18/19 Project: Arlington Residential 190211V004 Date Extracted: 12/19/19 Lab ID: 912311-01 Date Analyzed: 12/19/19 Data File: 121914.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 14 ip 15 99 Phenol-d6 12 11 65 Nitrobenzene-d5 71 50 150 2-Fluorobiphenyl 74 50 150 2,4,6-Tribromophenol 40 34 132 Terphenyl-d14 87 45 138 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 jl 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 jl Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 3 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: MW-1-20191217 Client: Associated Earth Sciences Date Received: 12/18/19 Project: Arlington Residential 190211V004 Date Extracted: 12/19/19 Lab ID: 912311-02 Date Analyzed: 12/19/19 Data File: 121915.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 7 ip 15 99 Phenol-d6 9 ip 11 65 Nitrobenzene-d5 79 50 150 2-Fluorobiphenyl 84 50 150 2,4,6-Tribromophenol 22 ip 34 132 Terphenyl-d14 87 45 138 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 jl 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 jl Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 4 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: MW-3-20191217 Client: Associated Earth Sciences Date Received: 12/18/19 Project: Arlington Residential 190211V004 Date Extracted: 12/19/19 Lab ID: 912311-03 Date Analyzed: 12/20/19 Data File: 122012.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 9 ip 15 99 Phenol-d6 11 11 65 Nitrobenzene-d5 75 50 150 2-Fluorobiphenyl 80 50 150 2,4,6-Tribromophenol 30 ip 34 132 Terphenyl-d14 87 45 138 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 jl 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 jl Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 5 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: MW-2-20191217 Client: Associated Earth Sciences Date Received: 12/18/19 Project: Arlington Residential 190211V004 Date Extracted: 12/19/19 Lab ID: 912311-04 Date Analyzed: 12/20/19 Data File: 122013.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 18 15 99 Phenol-d6 13 11 65 Nitrobenzene-d5 71 50 150 2-Fluorobiphenyl 77 50 150 2,4,6-Tribromophenol 69 34 132 Terphenyl-d14 90 45 138 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 jl 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 jl Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 6 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: SEEP-20191217 Client: Associated Earth Sciences Date Received: 12/18/19 Project: Arlington Residential 190211V004 Date Extracted: 12/19/19 Lab ID: 912311-06 Date Analyzed: 12/19/19 Data File: 121918.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 28 15 99 Phenol-d6 24 11 65 Nitrobenzene-d5 84 50 150 2-Fluorobiphenyl 85 50 150 2,4,6-Tribromophenol 51 34 132 Terphenyl-d14 86 45 138 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 jl 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 jl Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 7 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270D Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V004 Date Extracted: 12/19/19 Lab ID: 09-3062 mb Date Analyzed: 12/19/19 Data File: 121912.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 20 15 99 Phenol-d6 12 11 65 Nitrobenzene-d5 71 50 150 2-Fluorobiphenyl 78 50 150 2,4,6-Tribromophenol 72 34 132 Terphenyl-d14 86 45 138 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 jl 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 jl Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 8 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: MW-4-20191217 Client: Associated Earth Sciences Date Received: 12/18/19 Project: Arlington Residential 190211V004 Date Extracted: 12/23/19 Lab ID: 912311-01 Date Analyzed: 12/27/19 Data File: 122657.D Matrix: Water Instrument: GCMS4 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 103 57 121 Toluene-d8 103 63 127 4-Bromofluorobenzene 97 60 133 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 9 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: MW-1-20191217 Client: Associated Earth Sciences Date Received: 12/18/19 Project: Arlington Residential 190211V004 Date Extracted: 12/23/19 Lab ID: 912311-02 Date Analyzed: 12/23/19 Data File: 122314.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 102 50 150 Toluene-d8 109 50 150 4-Bromofluorobenzene 105 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 10 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: MW-3-20191217 Client: Associated Earth Sciences Date Received: 12/18/19 Project: Arlington Residential 190211V004 Date Extracted: 12/23/19 Lab ID: 912311-03 Date Analyzed: 12/23/19 Data File: 122315.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 102 50 150 Toluene-d8 110 50 150 4-Bromofluorobenzene 105 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 11 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: MW-2-20191217 Client: Associated Earth Sciences Date Received: 12/18/19 Project: Arlington Residential 190211V004 Date Extracted: 12/23/19 Lab ID: 912311-04 Date Analyzed: 12/23/19 Data File: 122316.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 100 50 150 Toluene-d8 108 50 150 4-Bromofluorobenzene 106 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 12 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: SEEP-20191217 Client: Associated Earth Sciences Date Received: 12/18/19 Project: Arlington Residential 190211V004 Date Extracted: 12/23/19 Lab ID: 912311-06 Date Analyzed: 12/27/19 Data File: 122658.D Matrix: Water Instrument: GCMS4 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 102 57 121 Toluene-d8 102 63 127 4-Bromofluorobenzene 98 60 133 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 13 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260C Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V004 Date Extracted: 12/23/19 Lab ID: 09-3081 mb Date Analyzed: 12/23/19 Data File: 122314.D Matrix: Water Instrument: GCMS4 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 99 57 121 Toluene-d8 104 63 127 4-Bromofluorobenzene 93 60 133 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 14 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 01/02/20 Date Received: 12/18/19 Project: Arlington Residential 190211V004, F&BI 912311 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL EXTENDED USING METHOD NWTPH-Dx Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Diesel Extended ug/L (ppb) 2,500 112 108 61-133 4 15 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 01/02/20 Date Received: 12/18/19 Project: Arlington Residential 190211V004, F&BI 912311 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR SEMIVOLATILES BY EPA METHOD 8270D Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Phenol ug/L (ppb) 5 15 18 10-86 18 Bis(2-chloroethyl) ether ug/L (ppb) 5 83 92 65-121 10 2-Chlorophenol ug/L (ppb) 5 68 76 58-123 11 1,3-Dichlorobenzene ug/L (ppb) 5 75 86 66-113 14 1,4-Dichlorobenzene ug/L (ppb) 5 75 85 62-114 12 1,2-Dichlorobenzene ug/L (ppb) 5 76 84 63-115 10 Benzyl alcohol ug/L (ppb) 5 45 50 37-125 11 2,2'-Oxybis(1-chloropropane) ug/L (ppb) 5 83 89 70-130 7 2-Methylphenol ug/L (ppb) 5 50 54 38-119 8 Hexachloroethane ug/L (ppb) 5 75 85 64-117 12 N-Nitroso-di-n-propylamine ug/L (ppb) 5 86 94 70-130 9 3-Methylphenol + 4-Methylphenol ug/L (ppb) 5 40 vo 45 44-110 12 Nitrobenzene ug/L (ppb) 5 86 90 70-130 5 Isophorone ug/L (ppb) 5 88 91 70-130 3 2-Nitrophenol ug/L (ppb) 5 86 96 61-141 11 2,4-Dimethylphenol ug/L (ppb) 5 79 88 12-127 11 Benzoic acid ug/L (ppb) 32.5 6 vo 7 vo 10-102 15 Bis(2-chloroethoxy)methane ug/L (ppb) 5 87 92 70-130 6 2,4-Dichlorophenol ug/L (ppb) 5 80 89 70-130 11 1,2,4-Trichlorobenzene ug/L (ppb) 5 80 86 70-130 7 Naphthalene ug/L (ppb) 5 82 87 65-111 6 Hexachlorobutadiene ug/L (ppb) 5 75 81 65-115 8 4-Chloroaniline ug/L (ppb) 10 82 84 24-146 2 4-Chloro-3-methylphenol ug/L (ppb) 5 78 82 58-133 5 2-Methylnaphthalene ug/L (ppb) 5 84 89 70-130 6 1-Methylnaphthalene ug/L (ppb) 5 83 88 70-130 6 Hexachlorocyclopentadiene ug/L (ppb) 5 81 78 36-112 4 2,4,6-Trichlorophenol ug/L (ppb) 5 80 89 70-130 11 2,4,5-Trichlorophenol ug/L (ppb) 5 83 90 70-130 8 2-Chloronaphthalene ug/L (ppb) 5 85 89 70-130 5 2-Nitroaniline ug/L (ppb) 5 89 96 64-143 8 Dimethyl phthalate ug/L (ppb) 5 93 101 64-140 8 Acenaphthylene ug/L (ppb) 5 95 99 70-130 4 2,6-Dinitrotoluene ug/L (ppb) 5 93 97 70-130 4 3-Nitroaniline ug/L (ppb) 10 86 91 53-134 6 Acenaphthene ug/L (ppb) 5 88 92 65-122 4 2,4-Dinitrophenol ug/L (ppb) 5 69 87 58-139 23 vo Dibenzofuran ug/L (ppb) 5 91 96 70-130 5 2,4-Dinitrotoluene ug/L (ppb) 5 88 98 70-130 11 4-Nitrophenol ug/L (ppb) 5 20 23 10-89 14 Diethyl phthalate ug/L (ppb) 5 94 100 56-141 6 Fluorene ug/L (ppb) 5 92 97 70-130 5 4-Chlorophenyl phenyl ether ug/L (ppb) 5 89 93 70-130 4 N-Nitrosodiphenylamine ug/L (ppb) 5 91 93 70-130 2 4-Nitroaniline ug/L (ppb) 10 81 88 66-134 8 4,6-Dinitro-2-methylphenol ug/L (ppb) 5 81 95 69-138 16 4-Bromophenyl phenyl ether ug/L (ppb) 5 91 95 70-130 4 Hexachlorobenzene ug/L (ppb) 5 87 91 70-130 4 Pentachlorophenol ug/L (ppb) 5 71 83 70-130 16 Phenanthrene ug/L (ppb) 5 91 95 70-130 4 Anthracene ug/L (ppb) 5 90 96 70-130 6 Carbazole ug/L (ppb) 5 95 102 70-130 7 Di-n-butyl phthalate ug/L (ppb) 5 91 97 70-130 6 Fluoranthene ug/L (ppb) 5 93 99 70-130 6 Pyrene ug/L (ppb) 5 99 97 70-130 2 Benzyl butyl phthalate ug/L (ppb) 5 92 97 70-130 5 Benz(a)anthracene ug/L (ppb) 5 92 96 70-130 4 Chrysene ug/L (ppb) 5 94 96 70-130 2 Bis(2-ethylhexyl) phthalate ug/L (ppb) 5 82 89 63-139 8 Di-n-octyl phthalate ug/L (ppb) 5 80 84 67-147 5 Benzo(a)pyrene ug/L (ppb) 5 89 91 70-130 2 Benzo(b)fluoranthene ug/L (ppb) 5 84 84 70-130 0 Benzo(k)fluoranthene ug/L (ppb) 5 84 83 70-130 1 Indeno(1,2,3-cd)pyrene ug/L (ppb) 5 80 88 57-141 10 Dibenz(a,h)anthracene ug/L (ppb) 5 78 85 57-137 9 Benzo(g,h,i)perylene ug/L (ppb) 5 78 84 50-143 7 16 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 01/02/20 Date Received: 12/18/19 Project: Arlington Residential 190211V004, F&BI 912311 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR VOLATILES BY EPA METHOD 8260C Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Dichlorodifluoromethane ug/L (ppb) 50 122 140 25-158 14 Chloromethane ug/L (ppb) 50 122 127 45-156 4 Vinyl chloride ug/L (ppb) 50 116 123 50-154 6 Bromomethane ug/L (ppb) 50 127 137 55-143 8 Chloroethane ug/L (ppb) 50 121 129 58-146 6 Trichlorofluoromethane ug/L (ppb) 250 117 123 50-150 5 Acetone ug/L (ppb) 250 99 98 53-131 1 1,1-Dichloroethene ug/L (ppb) 50 118 121 67-136 3 Hexane ug/L (ppb) 50 109 108 57-137 1 Methylene chloride ug/L (ppb) 50 118 122 39-148 3 Methyl t-butyl ether (MTBE) ug/L (ppb) 50 118 121 64-147 3 trans-1,2-Dichloroethene ug/L (ppb) 50 116 117 68-128 1 1,1-Dichloroethane ug/L (ppb) 50 114 116 79-121 2 2,2-Dichloropropane ug/L (ppb) 50 105 112 55-143 6 cis-1,2-Dichloroethene ug/L (ppb) 50 116 119 80-123 3 Chloroform ug/L (ppb) 50 111 113 80-121 2 2-Butanone (MEK) ug/L (ppb) 250 106 107 57-149 1 1,2-Dichloroethane (EDC) ug/L (ppb) 50 114 117 73-132 3 1,1,1-Trichloroethane ug/L (ppb) 50 117 121 81-125 3 1,1-Dichloropropene ug/L (ppb) 50 112 114 77-129 2 Carbon tetrachloride ug/L (ppb) 50 120 124 75-158 3 Benzene ug/L (ppb) 50 114 117 69-134 3 Trichloroethene ug/L (ppb) 50 109 112 79-113 3 1,2-Dichloropropane ug/L (ppb) 50 114 117 77-123 3 Bromodichloromethane ug/L (ppb) 50 115 119 81-133 3 Dibromomethane ug/L (ppb) 50 112 113 82-125 1 4-Methyl-2-pentanone ug/L (ppb) 250 114 116 65-138 2 cis-1,3-Dichloropropene ug/L (ppb) 50 123 125 82-132 2 Toluene ug/L (ppb) 50 99 102 72-122 3 trans-1,3-Dichloropropene ug/L (ppb) 50 109 111 80-136 2 1,1,2-Trichloroethane ug/L (ppb) 50 100 101 75-124 1 2-Hexanone ug/L (ppb) 250 98 101 60-136 3 1,3-Dichloropropane ug/L (ppb) 50 101 104 76-126 3 Tetrachloroethene ug/L (ppb) 50 99 103 76-121 4 Dibromochloromethane ug/L (ppb) 50 110 113 84-133 3 1,2-Dibromoethane (EDB) ug/L (ppb) 50 101 103 82-115 2 Chlorobenzene ug/L (ppb) 50 100 104 83-114 4 Ethylbenzene ug/L (ppb) 50 102 106 77-124 4 1,1,1,2-Tetrachloroethane ug/L (ppb) 50 107 112 84-127 5 m,p-Xylene ug/L (ppb) 100 101 104 81-112 3 o-Xylene ug/L (ppb) 50 101 105 81-121 4 Styrene ug/L (ppb) 50 101 106 84-119 5 Isopropylbenzene ug/L (ppb) 50 101 106 80-117 5 Bromoform ug/L (ppb) 50 117 120 74-136 3 n-Propylbenzene ug/L (ppb) 50 98 101 74-126 3 Bromobenzene ug/L (ppb) 50 100 102 80-121 2 1,3,5-Trimethylbenzene ug/L (ppb) 50 101 104 78-123 3 1,1,2,2-Tetrachloroethane ug/L (ppb) 50 100 102 66-126 2 1,2,3-Trichloropropane ug/L (ppb) 50 98 100 67-124 2 2-Chlorotoluene ug/L (ppb) 50 99 102 77-127 3 4-Chlorotoluene ug/L (ppb) 50 99 102 78-128 3 tert-Butylbenzene ug/L (ppb) 50 101 105 80-123 4 1,2,4-Trimethylbenzene ug/L (ppb) 50 99 103 79-122 4 sec-Butylbenzene ug/L (ppb) 50 98 102 80-116 4 p-Isopropyltoluene ug/L (ppb) 50 97 101 81-123 4 1,3-Dichlorobenzene ug/L (ppb) 50 99 102 83-113 3 1,4-Dichlorobenzene ug/L (ppb) 50 97 100 83-107 3 1,2-Dichlorobenzene ug/L (ppb) 50 100 104 84-112 4 1,2-Dibromo-3-chloropropane ug/L (ppb) 50 100 107 57-141 7 1,2,4-Trichlorobenzene ug/L (ppb) 50 101 106 72-130 5 Hexachlorobutadiene ug/L (ppb) 50 94 98 53-141 4 Naphthalene ug/L (ppb) 50 102 107 64-133 5 1,2,3-Trichlorobenzene ug/L (ppb) 50 100 106 65-136 6 17 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningful. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fb - The analyte was detected in the method blank. fc - The analyte is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. ht â€“ The analysis was performed outside the method or client-specified holding time requirement. ip - Recovery fell outside of control limits due to sample matrix effects. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery and/or RPD were out of control limits. The reported concentration should be considered an estimate. js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. pc - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 18 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. 3012 16th Avenue West Yelena Aravkina, M.S. Seattle, WA 98119-2029 Michael Erdahl, B.S. (206) 285-8282 Arina Podnozova, B.S. fbi@isomedia.com Eric Young, B.S. www.friedmanandbruya.com February 21, 2020 Ken Jennings, Project Manager Associated Earth Sciences, Inc. 911 5th Avenue, Suite 100 Kirkland, WA 98033 Dear Mr Jennings: Included are the results from the testing of material submitted on February 14, 2020 from the Arlington Residential 190211V005, F&BI 002204 project. There are 19 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days, or as directed by the Chain of Custody document. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures c: Kellie Andrews AE10221R.DOC FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on February 14, 2020 by Friedman & Bruya, Inc. from the Associated Earth Sciences Arlington Residential 190211V005, F&BI 002204 project. Samples were logged in under the laboratory IDâ€™s listed below. Laboratory ID Associated Earth Sciences 002204 -01 SEEP-20200213 002204 -02 MW-4-20200213 002204 -03 MW-1-20200213 002204 -04 MW-3-20200213 002204 -05 MW-2-20200213 The 8270 laboratory sample and laboratory sample duplicate failed the relative percent difference for 2,4-dinitrophenol. The analyte was not detected therefore the data were acceptable. Trichloroethene in the 8260D laboratory control sample and laboratory control sample duplicate exceeded the acceptance criteria. The analyte was not detected in the samples, therefore the data were acceptable. In addition, MTBE failed below the acceptance criteria in the matrix spike sample. The laboratory control samples met the acceptance criteria, therefore the data were likely due to sample matrix effect. All other quality control requirements were acceptable. 1 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 02/21/20 Date Received: 02/14/20 Project: Arlington Residential 190211V005, F&BI 002204 Date Extracted: 02/14/20 Date Analyzed: 02/14/20 RESULTS FROM THE ANALYSIS OF WATER SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL AND MOTOR OIL USING METHOD NWTPH-Dx Results Reported as ug/L (ppb) Surrogate Sample ID Diesel Range Motor Oil Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 41-152) SEEP-20200213 <50 <250 94 002204-01 MW-4-20200213 <50 <250 98 002204-02 MW-1-20200213 <50 <250 88 002204-03 MW-3-20200213 <50 <250 101 002204-04 MW-2-20200213 <50 <250 96 002204-05 Method Blank <50 <250 89 00-432 MB 2 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270E Client Sample ID: SEEP-20200213 Client: Associated Earth Sciences Date Received: 02/14/20 Project: Arlington Residential 190211V005 Date Extracted: 02/17/20 Lab ID: 002204-01 Date Analyzed: 02/17/20 Data File: 021714.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 6 ip 15 99 Phenol-d6 5 ip 11 65 Nitrobenzene-d5 17 ip 50 150 2-Fluorobiphenyl 22 ip 50 150 2,4,6-Tribromophenol 39 34 132 Terphenyl-d14 67 45 138 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 ca 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 3 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270E Client Sample ID: MW-4-20200213 Client: Associated Earth Sciences Date Received: 02/14/20 Project: Arlington Residential 190211V005 Date Extracted: 02/17/20 Lab ID: 002204-02 Date Analyzed: 02/17/20 Data File: 021715.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 13 ip 15 99 Phenol-d6 10 ip 11 65 Nitrobenzene-d5 65 50 150 2-Fluorobiphenyl 75 50 150 2,4,6-Tribromophenol 47 34 132 Terphenyl-d14 90 45 138 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 ca 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 4 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270E Client Sample ID: MW-1-20200213 Client: Associated Earth Sciences Date Received: 02/14/20 Project: Arlington Residential 190211V005 Date Extracted: 02/17/20 Lab ID: 002204-03 Date Analyzed: 02/17/20 Data File: 021716.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 12 ip 15 99 Phenol-d6 11 11 65 Nitrobenzene-d5 65 50 150 2-Fluorobiphenyl 81 50 150 2,4,6-Tribromophenol 55 34 132 Terphenyl-d14 93 45 138 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 ca 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 5 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270E Client Sample ID: MW-3-20200213 Client: Associated Earth Sciences Date Received: 02/14/20 Project: Arlington Residential 190211V005 Date Extracted: 02/17/20 Lab ID: 002204-04 Date Analyzed: 02/17/20 Data File: 021717.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 13 ip 15 99 Phenol-d6 11 11 65 Nitrobenzene-d5 74 50 150 2-Fluorobiphenyl 87 50 150 2,4,6-Tribromophenol 55 34 132 Terphenyl-d14 92 45 138 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 ca 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 6 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270E Client Sample ID: MW-2-20200213 Client: Associated Earth Sciences Date Received: 02/14/20 Project: Arlington Residential 190211V005 Date Extracted: 02/17/20 Lab ID: 002204-05 Date Analyzed: 02/17/20 Data File: 021718.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 17 15 99 Phenol-d6 13 11 65 Nitrobenzene-d5 73 50 150 2-Fluorobiphenyl 84 50 150 2,4,6-Tribromophenol 60 34 132 Terphenyl-d14 86 45 138 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 ca 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 7 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Semivolatile Compounds By EPA Method 8270E Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V005 Date Extracted: 02/17/20 Lab ID: 00-435 mb Date Analyzed: 02/17/20 Data File: 021713.D Matrix: Water Instrument: GCMS8 Units: ug/L (ppb) Operator: VM Lower Upper Surrogates: % Recovery: Limit: Limit: 2-Fluorophenol 26 15 99 Phenol-d6 16 11 65 Nitrobenzene-d5 76 50 150 2-Fluorobiphenyl 91 50 150 2,4,6-Tribromophenol 75 34 132 Terphenyl-d14 97 45 138 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Phenol <2 2,6-Dinitrotoluene <1 Bis(2-chloroethyl) ether <0.2 3-Nitroaniline <20 2-Chlorophenol <2 Acenaphthene <0.02 1,3-Dichlorobenzene <0.2 2,4-Dinitrophenol <6 ca 1,4-Dichlorobenzene <0.2 Dibenzofuran <0.2 1,2-Dichlorobenzene <0.2 2,4-Dinitrotoluene <1 Benzyl alcohol <2 4-Nitrophenol <6 2,2â€™-Oxybis(1-chloropropane) <0.2 Diethyl phthalate <2 2-Methylphenol <2 Fluorene <0.02 Hexachloroethane <0.2 4-Chlorophenyl phenyl ether <0.2 N-Nitroso-di-n-propylamine <0.2 N-Nitrosodiphenylamine <0.2 3-Methylphenol + 4-Methylphenol <4 4-Nitroaniline <20 Nitrobenzene <0.2 4,6-Dinitro-2-methylphenol <6 Isophorone <0.2 4-Bromophenyl phenyl ether <0.2 2-Nitrophenol <2 Hexachlorobenzene <0.2 2,4-Dimethylphenol <2 Pentachlorophenol <1 Benzoic acid <10 Phenanthrene <0.02 Bis(2-chloroethoxy)methane <0.2 Anthracene <0.02 2,4-Dichlorophenol <2 Carbazole <0.2 1,2,4-Trichlorobenzene <0.2 Di-n-butyl phthalate <2 Naphthalene <0.2 Fluoranthene <0.02 Hexachlorobutadiene <0.2 Pyrene <0.02 4-Chloroaniline <20 Benzyl butyl phthalate <2 4-Chloro-3-methylphenol <2 Benz(a)anthracene <0.02 2-Methylnaphthalene <0.2 Chrysene <0.02 1-Methylnaphthalene <0.2 Bis(2-ethylhexyl) phthalate <3.2 Hexachlorocyclopentadiene <0.6 Di-n-octyl phthalate <2 2,4,6-Trichlorophenol <2 Benzo(a)pyrene <0.02 2,4,5-Trichlorophenol <2 Benzo(b)fluoranthene <0.02 2-Chloronaphthalene <0.2 Benzo(k)fluoranthene <0.02 2-Nitroaniline <1 Indeno(1,2,3-cd)pyrene <0.02 Dimethyl phthalate <2 Dibenz(a,h)anthracene <0.02 Acenaphthylene <0.02 Benzo(g,h,i)perylene <0.04 8 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260D Client Sample ID: SEEP-20200213 Client: Associated Earth Sciences Date Received: 02/14/20 Project: Arlington Residential 190211V005 Date Extracted: 02/17/20 Lab ID: 002204-01 Date Analyzed: 02/18/20 Data File: 021819.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 103 50 150 Toluene-d8 98 50 150 4-Bromofluorobenzene 100 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 9 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260D Client Sample ID: MW-4-20200213 Client: Associated Earth Sciences Date Received: 02/14/20 Project: Arlington Residential 190211V005 Date Extracted: 02/17/20 Lab ID: 002204-02 Date Analyzed: 02/18/20 Data File: 021820.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 103 50 150 Toluene-d8 97 50 150 4-Bromofluorobenzene 99 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 10 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260D Client Sample ID: MW-1-20200213 Client: Associated Earth Sciences Date Received: 02/14/20 Project: Arlington Residential 190211V005 Date Extracted: 02/17/20 Lab ID: 002204-03 Date Analyzed: 02/18/20 Data File: 021821.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 105 50 150 Toluene-d8 96 50 150 4-Bromofluorobenzene 96 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 11 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260D Client Sample ID: MW-3-20200213 Client: Associated Earth Sciences Date Received: 02/14/20 Project: Arlington Residential 190211V005 Date Extracted: 02/17/20 Lab ID: 002204-04 Date Analyzed: 02/18/20 Data File: 021822.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 106 50 150 Toluene-d8 101 50 150 4-Bromofluorobenzene 101 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 12 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260D Client Sample ID: MW-2-20200213 Client: Associated Earth Sciences Date Received: 02/14/20 Project: Arlington Residential 190211V005 Date Extracted: 02/17/20 Lab ID: 002204-05 Date Analyzed: 02/18/20 Data File: 021823.D Matrix: Water Instrument: GCMS9 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 105 50 150 Toluene-d8 98 50 150 4-Bromofluorobenzene 97 50 150 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 13 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Analysis For Volatile Compounds By EPA Method 8260D Client Sample ID: Method Blank Client: Associated Earth Sciences Date Received: Not Applicable Project: Arlington Residential 190211V005 Date Extracted: 02/17/20 Lab ID: 00-408 mb Date Analyzed: 02/18/20 Data File: 021814.D Matrix: Water Instrument: GCMS4 Units: ug/L (ppb) Operator: MS Lower Upper Surrogates: % Recovery: Limit: Limit: 1,2-Dichloroethane-d4 103 57 121 Toluene-d8 101 63 127 4-Bromofluorobenzene 95 60 133 Concentration Concentration Compounds: ug/L (ppb) Compounds: ug/L (ppb) Dichlorodifluoromethane <1 1,3-Dichloropropane <1 Chloromethane <10 Tetrachloroethene <1 Vinyl chloride <0.2 Dibromochloromethane <1 Bromomethane <1 1,2-Dibromoethane (EDB) <1 Chloroethane <1 Chlorobenzene <1 Trichlorofluoromethane <1 Ethylbenzene <1 Acetone <50 1,1,1,2-Tetrachloroethane <1 1,1-Dichloroethene <1 m,p-Xylene <2 Hexane <1 o-Xylene <1 Methylene chloride <5 Styrene <1 Methyl t-butyl ether (MTBE) <1 Isopropylbenzene <1 trans-1,2-Dichloroethene <1 Bromoform <1 1,1-Dichloroethane <1 n-Propylbenzene <1 2,2-Dichloropropane <1 Bromobenzene <1 cis-1,2-Dichloroethene <1 1,3,5-Trimethylbenzene <1 Chloroform <1 1,1,2,2-Tetrachloroethane <1 2-Butanone (MEK) <10 1,2,3-Trichloropropane <1 1,2-Dichloroethane (EDC) <1 2-Chlorotoluene <1 1,1,1-Trichloroethane <1 4-Chlorotoluene <1 1,1-Dichloropropene <1 tert-Butylbenzene <1 Carbon tetrachloride <1 1,2,4-Trimethylbenzene <1 Benzene <0.35 sec-Butylbenzene <1 Trichloroethene <1 p-Isopropyltoluene <1 1,2-Dichloropropane <1 1,3-Dichlorobenzene <1 Bromodichloromethane <1 1,4-Dichlorobenzene <1 Dibromomethane <1 1,2-Dichlorobenzene <1 4-Methyl-2-pentanone <10 1,2-Dibromo-3-chloropropane <10 cis-1,3-Dichloropropene <1 1,2,4-Trichlorobenzene <1 Toluene <1 Hexachlorobutadiene <1 trans-1,3-Dichloropropene <1 Naphthalene <1 1,1,2-Trichloroethane <1 1,2,3-Trichlorobenzene <1 2-Hexanone <10 14 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 02/21/20 Date Received: 02/14/20 Project: Arlington Residential 190211V005, F&BI 002204 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL EXTENDED USING METHOD NWTPH-Dx Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Diesel Extended ug/L (ppb) 2,500 112 100 63-142 11 15 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 02/21/20 Date Received: 02/14/20 Project: Arlington Residential 190211V005, F&BI 002204 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR SEMIVOLATILES BY EPA METHOD 8270E Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Phenol ug/L (ppb) 5 17 21 10-86 21 vo Bis(2-chloroethyl) ether ug/L (ppb) 5 80 86 65-121 7 2-Chlorophenol ug/L (ppb) 5 67 72 58-123 7 1,3-Dichlorobenzene ug/L (ppb) 5 78 82 66-113 5 1,4-Dichlorobenzene ug/L (ppb) 5 75 80 62-114 6 1,2-Dichlorobenzene ug/L (ppb) 5 77 82 63-115 6 Benzyl alcohol ug/L (ppb) 10 46 51 37-125 10 2,2'-Oxybis(1-chloropropane) ug/L (ppb) 5 83 87 70-130 5 2-Methylphenol ug/L (ppb) 5 53 59 38-119 11 Hexachloroethane ug/L (ppb) 5 79 84 64-117 6 N-Nitroso-di-n-propylamine ug/L (ppb) 5 92 95 70-130 3 3-Methylphenol + 4-Methylphenol ug/L (ppb) 5 45 50 44-110 11 Nitrobenzene ug/L (ppb) 5 81 92 70-130 13 Isophorone ug/L (ppb) 5 88 97 70-130 10 2-Nitrophenol ug/L (ppb) 5 85 91 61-141 7 2,4-Dimethylphenol ug/L (ppb) 5 77 85 12-127 10 Benzoic acid ug/L (ppb) 32.5 12 14 10-102 15 Bis(2-chloroethoxy)methane ug/L (ppb) 5 84 94 70-130 11 2,4-Dichlorophenol ug/L (ppb) 5 81 87 70-130 7 1,2,4-Trichlorobenzene ug/L (ppb) 5 78 83 70-130 6 Naphthalene ug/L (ppb) 5 74 80 65-111 8 Hexachlorobutadiene ug/L (ppb) 5 75 82 65-115 9 4-Chloroaniline ug/L (ppb) 10 74 81 24-146 9 4-Chloro-3-methylphenol ug/L (ppb) 5 73 79 58-133 8 2-Methylnaphthalene ug/L (ppb) 5 78 81 70-130 4 1-Methylnaphthalene ug/L (ppb) 5 78 81 70-130 4 Hexachlorocyclopentadiene ug/L (ppb) 5 99 106 36-112 7 2,4,6-Trichlorophenol ug/L (ppb) 5 89 97 70-130 9 2,4,5-Trichlorophenol ug/L (ppb) 5 85 96 70-130 12 2-Chloronaphthalene ug/L (ppb) 5 81 88 70-130 8 2-Nitroaniline ug/L (ppb) 10 83 94 64-143 12 Dimethyl phthalate ug/L (ppb) 5 86 100 64-140 15 Acenaphthylene ug/L (ppb) 5 84 94 70-130 11 2,6-Dinitrotoluene ug/L (ppb) 5 82 98 70-130 18 3-Nitroaniline ug/L (ppb) 10 77 89 53-134 14 Acenaphthene ug/L (ppb) 5 79 89 65-122 12 2,4-Dinitrophenol ug/L (ppb) 5 81 81 58-139 0 Dibenzofuran ug/L (ppb) 5 80 90 70-130 12 2,4-Dinitrotoluene ug/L (ppb) 5 81 91 70-130 12 4-Nitrophenol ug/L (ppb) 5 26 29 10-89 11 Diethyl phthalate ug/L (ppb) 5 82 96 56-141 16 Fluorene ug/L (ppb) 5 81 92 70-130 13 4-Chlorophenyl phenyl ether ug/L (ppb) 5 77 91 70-130 17 N-Nitrosodiphenylamine ug/L (ppb) 5 84 96 70-130 13 4-Nitroaniline ug/L (ppb) 10 79 85 66-134 7 4,6-Dinitro-2-methylphenol ug/L (ppb) 5 84 88 69-138 5 4-Bromophenyl phenyl ether ug/L (ppb) 5 84 96 70-130 13 Hexachlorobenzene ug/L (ppb) 5 83 94 70-130 12 Pentachlorophenol ug/L (ppb) 5 86 89 70-130 3 Phenanthrene ug/L (ppb) 5 83 95 70-130 13 Anthracene ug/L (ppb) 5 83 92 70-130 10 Carbazole ug/L (ppb) 5 91 101 70-130 10 Di-n-butyl phthalate ug/L (ppb) 5 84 97 70-130 14 Fluoranthene ug/L (ppb) 5 87 96 70-130 10 Pyrene ug/L (ppb) 5 84 95 70-130 12 Benzyl butyl phthalate ug/L (ppb) 5 90 100 70-130 11 Benz(a)anthracene ug/L (ppb) 5 86 97 70-130 12 Chrysene ug/L (ppb) 5 86 97 70-130 12 Bis(2-ethylhexyl) phthalate ug/L (ppb) 5 84 94 63-139 11 Di-n-octyl phthalate ug/L (ppb) 5 85 91 67-147 7 Benzo(a)pyrene ug/L (ppb) 5 76 85 70-130 11 Benzo(b)fluoranthene ug/L (ppb) 5 73 83 70-130 13 Benzo(k)fluoranthene ug/L (ppb) 5 75 84 70-130 11 Indeno(1,2,3-cd)pyrene ug/L (ppb) 5 74 82 57-141 10 Dibenz(a,h)anthracene ug/L (ppb) 5 69 77 57-137 11 Benzo(g,h,i)perylene ug/L (ppb) 5 71 78 50-143 9 16 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 02/21/20 Date Received: 02/14/20 Project: Arlington Residential 190211V005, F&BI 002204 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR VOLATILES BY EPA METHOD 8260D Laboratory Code: 002219-01 (Matrix Spike) Percent Reporting Spike Sample Recovery Acceptance Analyte Units Level Result MS Criteria Dichlorodifluoromethane ug/L (ppb) 50 <1 143 10-172 Chloromethane ug/L (ppb) 50 <10 115 25-166 Vinyl chloride ug/L (ppb) 50 <0.2 118 36-166 Bromomethane ug/L (ppb) 50 <1 126 47-169 Chloroethane ug/L (ppb) 50 <1 133 46-160 Trichlorofluoromethane ug/L (ppb) 50 <1 130 44-165 Acetone ug/L (ppb) 250 <50 102 10-182 1,1-Dichloroethene ug/L (ppb) 50 <1 118 60-136 Hexane ug/L (ppb) 50 1.6 114 52-150 Methylene chloride ug/L (ppb) 50 <5 125 67-132 Methyl t-butyl ether (MTBE) ug/L (ppb) 50 <1 132 vo 74-127 trans-1,2-Dichloroethene ug/L (ppb) 50 <1 120 72-129 1,1-Dichloroethane ug/L (ppb) 50 <1 121 70-128 2,2-Dichloropropane ug/L (ppb) 50 <1 129 36-154 cis-1,2-Dichloroethene ug/L (ppb) 50 <1 113 71-127 Chloroform ug/L (ppb) 50 <1 109 65-132 2-Butanone (MEK) ug/L (ppb) 250 <10 90 10-129 1,2-Dichloroethane (EDC) ug/L (ppb) 50 <1 92 48-149 1,1,1-Trichloroethane ug/L (ppb) 50 <1 117 60-146 1,1-Dichloropropene ug/L (ppb) 50 <1 105 69-133 Carbon tetrachloride ug/L (ppb) 50 <1 127 56-152 Benzene ug/L (ppb) 50 13 104 b 76-125 Trichloroethene ug/L (ppb) 50 <1 109 66-135 1,2-Dichloropropane ug/L (ppb) 50 <1 103 78-125 Bromodichloromethane ug/L (ppb) 50 <1 111 61-150 Dibromomethane ug/L (ppb) 50 <1 97 66-141 4-Methyl-2-pentanone ug/L (ppb) 250 <10 107 10-185 cis-1,3-Dichloropropene ug/L (ppb) 50 <1 102 72-132 Toluene ug/L (ppb) 50 30 97 b 76-122 trans-1,3-Dichloropropene ug/L (ppb) 50 <1 96 76-130 1,1,2-Trichloroethane ug/L (ppb) 50 <1 96 68-131 2-Hexanone ug/L (ppb) 250 <10 89 10-185 1,3-Dichloropropane ug/L (ppb) 50 <1 91 71-128 Tetrachloroethene ug/L (ppb) 50 <1 101 10-226 Dibromochloromethane ug/L (ppb) 50 <1 112 70-139 1,2-Dibromoethane (EDB) ug/L (ppb) 50 <1 91 69-134 Chlorobenzene ug/L (ppb) 50 <1 96 77-122 Ethylbenzene ug/L (ppb) 50 17 100 b 69-135 1,1,1,2-Tetrachloroethane ug/L (ppb) 50 <1 120 73-137 m,p-Xylene ug/L (ppb) 100 130 97 b 69-135 o-Xylene ug/L (ppb) 50 39 101 b 60-140 Styrene ug/L (ppb) 50 <1 101 71-133 Isopropylbenzene ug/L (ppb) 50 <1 108 65-142 Bromoform ug/L (ppb) 50 <1 106 65-142 n-Propylbenzene ug/L (ppb) 50 <1 97 58-144 Bromobenzene ug/L (ppb) 50 <1 94 75-124 1,3,5-Trimethylbenzene ug/L (ppb) 50 7.9 104 66-137 1,1,2,2-Tetrachloroethane ug/L (ppb) 50 <1 99 51-154 1,2,3-Trichloropropane ug/L (ppb) 50 <1 91 53-150 2-Chlorotoluene ug/L (ppb) 50 <1 103 66-127 4-Chlorotoluene ug/L (ppb) 50 <1 95 65-130 tert-Butylbenzene ug/L (ppb) 50 <1 105 65-137 1,2,4-Trimethylbenzene ug/L (ppb) 50 18 103 b 59-146 sec-Butylbenzene ug/L (ppb) 50 <1 101 64-140 p-Isopropyltoluene ug/L (ppb) 50 <1 101 65-141 1,3-Dichlorobenzene ug/L (ppb) 50 <1 93 72-123 1,4-Dichlorobenzene ug/L (ppb) 50 <1 90 69-126 1,2-Dichlorobenzene ug/L (ppb) 50 <1 98 69-128 1,2-Dibromo-3-chloropropane ug/L (ppb) 50 <10 99 32-164 1,2,4-Trichlorobenzene ug/L (ppb) 50 <1 100 66-136 Hexachlorobutadiene ug/L (ppb) 50 <1 101 60-143 Naphthalene ug/L (ppb) 50 <1 102 44-164 1,2,3-Trichlorobenzene ug/L (ppb) 50 <1 98 69-148 17 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 02/21/20 Date Received: 02/14/20 Project: Arlington Residential 190211V005, F&BI 002204 QUALITY ASSURANCE RESULTS FOR THE ANALYSIS OF WATER SAMPLES FOR VOLATILES BY EPA METHOD 8260D Laboratory Code: Laboratory Control Sample Percent Percent Reporting Spike Recovery Recovery Acceptance RPD Analyte Units Level LCS LCSD Criteria (Limit 20) Dichlorodifluoromethane ug/L (ppb) 50 135 141 25-158 4 Chloromethane ug/L (ppb) 50 120 125 45-156 4 Vinyl chloride ug/L (ppb) 50 118 123 50-154 4 Bromomethane ug/L (ppb) 50 124 129 55-143 4 Chloroethane ug/L (ppb) 50 127 131 58-146 3 Trichlorofluoromethane ug/L (ppb) 250 127 128 50-150 1 Acetone ug/L (ppb) 250 99 98 53-131 1 1,1-Dichloroethene ug/L (ppb) 50 116 118 67-136 2 Hexane ug/L (ppb) 50 106 105 57-137 1 Methylene chloride ug/L (ppb) 50 109 112 39-148 3 Methyl t-butyl ether (MTBE) ug/L (ppb) 50 117 121 64-147 3 trans-1,2-Dichloroethene ug/L (ppb) 50 108 108 68-128 0 1,1-Dichloroethane ug/L (ppb) 50 109 109 79-121 0 2,2-Dichloropropane ug/L (ppb) 50 119 121 55-143 2 cis-1,2-Dichloroethene ug/L (ppb) 50 112 113 80-123 1 Chloroform ug/L (ppb) 50 111 112 80-121 1 2-Butanone (MEK) ug/L (ppb) 250 101 99 57-149 2 1,2-Dichloroethane (EDC) ug/L (ppb) 50 99 99 73-132 0 1,1,1-Trichloroethane ug/L (ppb) 50 117 118 81-125 1 1,1-Dichloropropene ug/L (ppb) 50 111 111 77-129 0 Carbon tetrachloride ug/L (ppb) 50 126 128 75-158 2 Benzene ug/L (ppb) 50 110 110 69-134 0 Trichloroethene ug/L (ppb) 50 116 vo 114 vo 79-113 2 1,2-Dichloropropane ug/L (ppb) 50 113 110 77-123 3 Bromodichloromethane ug/L (ppb) 50 122 119 81-133 2 Dibromomethane ug/L (ppb) 50 109 106 82-125 3 4-Methyl-2-pentanone ug/L (ppb) 250 119 116 65-138 3 cis-1,3-Dichloropropene ug/L (ppb) 50 117 115 82-132 2 Toluene ug/L (ppb) 50 102 101 72-122 1 trans-1,3-Dichloropropene ug/L (ppb) 50 109 106 80-136 3 1,1,2-Trichloroethane ug/L (ppb) 50 106 103 75-124 3 2-Hexanone ug/L (ppb) 250 100 97 60-136 3 1,3-Dichloropropane ug/L (ppb) 50 103 102 76-126 1 Tetrachloroethene ug/L (ppb) 50 104 103 76-121 1 Dibromochloromethane ug/L (ppb) 50 122 121 84-133 1 1,2-Dibromoethane (EDB) ug/L (ppb) 50 103 102 82-115 1 Chlorobenzene ug/L (ppb) 50 100 101 83-114 1 Ethylbenzene ug/L (ppb) 50 102 101 77-124 1 1,1,1,2-Tetrachloroethane ug/L (ppb) 50 118 122 84-127 3 m,p-Xylene ug/L (ppb) 100 102 102 81-112 0 o-Xylene ug/L (ppb) 50 103 104 81-121 1 Styrene ug/L (ppb) 50 104 104 84-119 0 Isopropylbenzene ug/L (ppb) 50 107 109 80-117 2 Bromoform ug/L (ppb) 50 114 116 74-136 2 n-Propylbenzene ug/L (ppb) 50 101 98 74-126 3 Bromobenzene ug/L (ppb) 50 101 97 80-121 4 1,3,5-Trimethylbenzene ug/L (ppb) 50 105 103 78-123 2 1,1,2,2-Tetrachloroethane ug/L (ppb) 50 108 104 66-126 4 1,2,3-Trichloropropane ug/L (ppb) 50 99 96 67-124 3 2-Chlorotoluene ug/L (ppb) 50 100 98 77-127 2 4-Chlorotoluene ug/L (ppb) 50 98 95 78-128 3 tert-Butylbenzene ug/L (ppb) 50 106 104 80-123 2 1,2,4-Trimethylbenzene ug/L (ppb) 50 105 103 79-122 2 sec-Butylbenzene ug/L (ppb) 50 104 102 80-116 2 p-Isopropyltoluene ug/L (ppb) 50 104 101 81-123 3 1,3-Dichlorobenzene ug/L (ppb) 50 99 97 83-113 2 1,4-Dichlorobenzene ug/L (ppb) 50 98 95 83-107 3 1,2-Dichlorobenzene ug/L (ppb) 50 102 102 84-112 0 1,2-Dibromo-3-chloropropane ug/L (ppb) 50 106 103 57-141 3 1,2,4-Trichlorobenzene ug/L (ppb) 50 104 103 72-130 1 Hexachlorobutadiene ug/L (ppb) 50 108 106 53-141 2 Naphthalene ug/L (ppb) 50 106 103 64-133 3 1,2,3-Trichlorobenzene ug/L (ppb) 50 102 101 65-136 1 18 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningful. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fb - The analyte was detected in the method blank. fc - The analyte is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. ht â€“ The analysis was performed outside the method or client-specified holding time requirement. ip - Recovery fell outside of control limits due to sample matrix effects. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery and/or RPD were out of control limits. The reported concentration should be considered an estimate. js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. pc - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 19 Vicinity Map Gilman Walk at Country Charm 142.58' 120.88' PHASE 3 PHASE 2 SETBACK SLOPE STEEP 15' BSBL 15' 12' 130.33' 1818 12' R.O.W. PHASE 2 PHASE 3 1717 50' 12' 19.5' 1616 15' CENTRAL LOT 15' 15 15 12.5' 19.5' PHASE 2 PHASE 1 EXISTING STEEP SLOPE BARN/GARAGE SETBACK 75' B 15' A3 E GILMAN AVE 30' B R.O.W. 50' 15' A3 PHASE 2 12.5' PHASE 1 BSBL 15' 11.21' 20.27' 31.75' 36.39' 35.58' 11.58' 15.82' 5 16.42' 17' 17.84' 5 13.46' 44 A A3 33 6 15.69' 15.08' 6 22' EXISTING 2 EXISTING 1 42.11' 19.5' STORY HOUSE 15.34' STORY HOUSE 2 EXISTING BARN/GARAGE 11.27' 2 7 16.75' 7 5.5' 10' 17.84' 19' 30.15' 8 17' 10' 22' 12' 8 5.5' 15.34' 19' 35.27' 9 1 9 1414 16' 19.5' 1 12.84' 16.48' 5.5' 21.85' 23.5' 1" = 40' 24.5' 28.5' 19' 1313 UNIT MIX PARKING COUNT 16' Phase 1 Phase 1 Central Lot 1212 EXISTING 1 A 3 bed/21 Garage Stalls 84 18.45' 2 bath +/-1900sf 4 units 16' STORY HOUSE B 3 bed/212 bath +/-2300sf 4 units Apron Stalls 60 Head In Stalls 12 C 3 bed/212 bath +/-2300sf 8 units Head In Stalls 4 Total 12 11 D 3 bed/21 Parallel Stalls 10 11 2 bath +/-2300sf 10 units E 4 bed/3 bath +/-2100sf 2 units Total 158 23.5' 10 28.5' F 4 bed/3 bath +/-2000sf 6 units Required 99 10 C F2 3 bed/2 bath +/-1700sf 4 units A3 J 4 bed/3 bath +/-2600sf 2 units 29.58' K 4 bed/3 bath +/-2500sf 4 units Phase 2 Total 44 units Garage Stalls 21 Apron Stalls 21 A Phase 2 Parallel Stalls 18 ALCAZAR AVE C Total 60 A3 A3 J2 3 bed/2 bath +/-2000sf 5 units Required 30 PARK HILL DR K2 3 bed/2 bath +/-1900sf 7 units G 3 bed/21 bath +/-1900sf 1 units 2 Total 13 units Sheet No.: Gilman Walk At Country Charm Preliminary Site Plan A1 M i l b r a n d t A r c h i t e c t s, I n c ., P . S . Arlington, Washington Scale: Drawn By: Date: Date Plotted: Job No.: 25 Central Way, Suite 210, Kirkland, Washington 98033 Phone: 425-454-7130 Fax: 425-658-1208 Website: http://www.milbrandtarch.com Landed Gentry Homes and Communities 1:40 HDM 9-16-2019 11-22-19 19-09 103.04' NORTH LOT EXISTING 2 STORY HOUSE 12.81' 19.28' R.O.W.50' 3232 20.22' 101.42' 31 25.11' 15' EXISTING 25.53' BSBL GARAGE STEEP SLOPE50' PHASE 4 3030 SETBACK SETBACKSLOPESTEEP 15' PHASE 3 BSBL 15' 20.29' 15.74' 15' 15' 2929 142.58' 4.5' 8' 2828 16.07' 2626 15.06' 68.2' 21.71' PHASE 4 15' 20.1' 2525 BSBL PHASE 2 PHASE 3 PHASE 3 27 50' 27 STEEP SLOPE SETBACK R.O.W. 50' 2424 14.66' 12.5' 19' 50' 12.5' 19.28' 2323 PHASE 2 PHASE 3 17.28' 15.58' 107.25' 17.58' 2121 17.58' 17.45' CENTRAL LOT 2020 BSBL 15' 22 19 19 22 1" = 40' 75.13' UNIT MIX PARKING COUNT 153.13' Phase 3 Phase 3 North Lot A 3 bed/212 bath +/-1900sf 12 units Garage Stalls 58 Head In Stalls 15 B 3 bed/212 bath +/-2300sf 14 units Apron Stalls 34 Total 15 J2 3 bed/2 bath +/-2000sf 2 units Parallel Stalls 4 K2 3 bed/2 bath +/-1900sf 2 units Total 96 Total 30 units Required 68 Phase 4 Phase 4 Garage Stalls 40 A 3 bed/21 Apron Stalls 28 2 bath +/-1900sf 6 units B 3 bed/21 Parallel Stalls 9 2 bath +/-2300sf 8 units J2 3 bed/2 bath +/-2000sf 4 units Total 77 K2 3 bed/2 bath +/-1900sf 4 units Required 50 Total 22 units Sheet No.: Gilman Walk At Country Charm Preliminary Site Plan A2 M i l b r a n d t A r c h i t e c t s, I n c ., P . S . Arlington, Washington Scale: Drawn By: Date: Date Plotted: Job No.: 25 Central Way, Suite 210, Kirkland, Washington 98033 Phone: 425-454-7130 Fax: 425-658-1208 Website: http://www.milbrandtarch.com Landed Gentry Homes and Communities 1:40 HDM 9-16-2019 11-22-19 19-09 Portion of the NW 1/4 and the SW 1/4 of SEC. 1, TWP. 31N., RGE. 5 E., W.M. PHASE 4 CIVIL ENGINEERING LANDSCAPE ARCHITECTURE PLANNING SURVEYING N G I S E D 12100 NE 195th St, Suite 300 Bothell, Washington 98011 425.885.7877 PHASE 2 PHASE 1 PHASE 3 E GILMAN AVE AERIAL PHOTO LANDED GENTRY HOMES AND COMMUNITIES GILMAN WALK AT COUNTRY CHARM PARK HILL DR ALCAZAR AVE C7.02 31 Â© 2019 Microsoft Corporation Â© 2019 DigitalGlobe Â©CNES (2019) Distribution Airbus DS 19035 CONTRUCTION PLAN REVIEW & INSPECTION FEE WORKSHEET Community & Economic Development Department 18204 59th Avenue NE City of Arlington ï¬ ï¬ Arlington WA 98223 ï¬ (360) 403-3551 This form is to be completed and submitted with Type I , Type II Type III Construction Permit Application. 1) Based on permit type requested (Type I, Type II or Type III), complete the form as follows: ï¬ Type I permits complete all sections. ï¬ Type II permits complete as follows: - Grading Only - Complete Temporary Erosion and Sediment Control (TESC). - Stormwater Drainage Only - Complete the Temporary Erosion and Sediment Control and Stormwater Drainage Section for Public or Private ï¬ Type III permits complete the Temporary Erosion and Sediment Control (TESC). 2) The developer shall enter the quantities shown on the construction drawings into the Construction Calculation Worksheet. This document is used to determine the amount of plan reivew and inspection fees due to the city. 3) Excel will auto-calculate the relevant fields and subtotals throughout the document. Only the 'Quantity' columns should be completed. 4) The summary page calculates the fees due at intake for Civil and Stormwater Drainage construction permits only. This does not include fees for Grading or those required by other departments or agencies. Grading fees are based on Cubic Yard Quantity and shall be calculated at time of permit submittal. Grading fees shall be paid at permit submittal. 5) If an item that is part of your project does not exist in the spreadsheet complete the Write-In-Items section with the item, quantity and associated unit cost. There are a few unit prices that are blank, please complete them accordingly. 6) Inspection fees shall be calculated for Private Development during the review process and shall be paid upon permit issuance. PROJECT COSTS PUBLIC TOTAL PRIVATE TOTAL TOTAL PROJECT COST $ 47,105.00 $ - $ 47,105.00 OK PLAN REVIEW & INSPECTION FEES PLAN REVIEW & INSPECTION FEE (6% of Project Value) $ - GRADING FEE (4) (Cubic Yard ) $ - Review fees due at time of submittal Total Review Fees Due $ - An Assurance Device such as a Performance Bond or Assignment of Funds needs to be on file with the City of Arlington prior to permit issuance. The Assurance Device shall be 150% of the Construction Calculation Worksheet which are as follows: ï¬ Road and Alley (Public) ï¬ Stormwater Drainage and Grading (Public) ï¬ Utilities (Public) ï¬ Temporary Erosion and Sediment Control (Public and Private) ASSURANCE DEVICE Base Calculation of Performance Device $ 47,105.00 PERFORMANCE DEVICE 150% Amount Due $ 70,657.50 Base Calculation of Maintenance Device $ - MAINTENANCE DEVICE 20% Amount Due $ - 1 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET TEMPORARY EROSION & SEDIMENT CONTROL Include Public Improvements & Private Development Description Unit Price Unit Quantity Cost Reference # Backfill & compaction-embankment $ 6.50 CY 450 $ 2,925.00 Check dams $ 78.00 EACH $ - BMP C207 Catch Basin Protection $ 35.50 EACH $ - Crushed surfacing 1 1/4" minus $ 18.00 TON $ - WSDOT 9-03.9(3) Ditching $ 8.00 CY $ - Excavation-bulk $ 3.00 CY 450 $ 1,350.00 Fence, silt $ 2.00 LF 200 $ 400.00 BMP C233 Fence, Temporary (NGPA) $ 2.00 LF $ - Geotextile Fabric $ 2.50 SY $ - Hay Bale Silt Trap $ 0.50 EACH $ - Hydroseeding $ 4,200.00 ACRE 0.5 $ 2,100.00 BMP C120 Interceptor Swale / Dike $ 1.00 LF $ - Jute Mesh $ 2.00 SY $ - BMP C122 Level Spreader $ 1.75 LF $ - Mulch, by hand, straw, 3" deep $ 3.00 SY $ - BMP C121 Mulch, by machine, straw, 2" deep $ 1.00 SY $ - BMP C121 Piping, temporary, CPP, 6" $ 12.50 LF $ - Piping, temporary, CPP, 8" $ 19.00 LF $ - Piping, temporary, CPP, 12" $ 24.00 LF $ - Plastic covering, 6mm thick, sandbagged $ 3.00 SY 50 $ 150.00 BMP C123 Rip Rap, machine placed; slopes $ 50.00 CY $ - WSDOT 9-13.1(2) Rock Construction Entrance, 50'x15'x1' $ 1,800.00 EACH $ - BMP C105 Rock Construction Entrance, 100'x15'x1' $ 3,600.00 EACH $ - BMP C105 Sediment pond riser assembly $ 3,050.00 EACH $ - BMP C241 Sediment trap, 5' high berm $ 21.00 LF $ - BMP C240 Sed. trap, 5' high, riprapped spillway berm section $ 79.00 LF $ - BMP C240 Seeding, by hand $ 1.00 SY $ - BMP C120 Sodding, 1" deep, level ground $ 8.00 SY $ - BMP C120 Sodding, 1" deep, sloped ground $ 9.50 SY $ - BMP C120 TESC Supervisor $ 84.00 HR 16 $ 1,344.00 Water truck, dust control $ 130.00 HR 8 $ 1,040.00 BMP C140 WRITE-IN-ITEMS Disposal of contaminated soils $ 24,375.00 EACH 1 $ 24,375.00 Structural fill import $ 20.00 CY 200 $ 4,000.00 $ - $ - SUBTOTAL (TESC Only): $ 37,684.00 MOBILIZATION 10%: $ 3,768.40 CONTINGENCY 15%: $ 5,652.60 TOTAL: $ 47,105.00 Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STORMWATER DRAINAGE Public Private Public Improvements Private Development Description Unit Price Unit Quantity Cost Quantity Cost Access Road, Retention / Detention $ 26.00 SY $ - $ - * (CBs include frame and lid) Beehive $ 90.00 EACH $ - $ - CB Type I $ 1,650.00 EACH $ - $ - CB Type IL $ 1,850.00 EACH $ - $ - CB Type II, 48" Dia $ 2,550.00 EACH $ - $ - for additional depth over 4' $ 650.00 FT $ - $ - CB Type II, 54" Dia $ 2,700.00 EACH $ - $ - for additional depth over 4' $ 600.00 FT $ - $ - CB Type II, 60" Dia $ 2,900.00 EACH $ - $ - for additional depth over 4' $ 750.00 FT $ - $ - CB Type II, 72" Dia $ 4,000.00 EACH $ - $ - for additional depth over 4' $ 900.00 FT $ - $ - Through-curb Inlet Framework (Add) $ 550.00 EACH $ - $ - Cleanout, PVC, 4" $ 200.00 EACH $ - $ - Cleanout, PVC, 6" $ 250.00 EACH $ - $ - Cleanout, PVC, 8" $ 300.00 EACH $ - $ - Culvert, Box __ ft x __ ft $ - LS $ - $ - Culvert, PVC, 4" $ 12.00 LF $ - $ - Culvert, PVC, 6" $ 17.00 LF $ - $ - Culvert, PVC, 8" $ 19.00 LF $ - $ - Culvert, PVC, 12" $ 30.00 LF $ - $ - Culvert, CMP, 8" $ 23.00 LF $ - $ - Culvert, CMP, 12" $ 35.00 LF $ - $ - Culvert, CMP, 15" $ 42.00 LF $ - $ - Culvert, CMP, 18" $ 47.00 LF $ - $ - Culvert, CMP, 24" $ 69.00 LF $ - $ - Culvert, CMP, 30" $ 100.00 LF $ - $ - Culvert, CMP, 36" $ 150.00 LF $ - $ - Culvert, CMP, 48" $ 194.00 LF $ - $ - Culvert, CMP, 60" $ 310.00 LF $ - $ - Culvert, CMP, 72" $ 400.00 LF $ - $ - Culvert, Concrete, 8" $ 36.00 LF $ - $ - Culvert, Concrete, 12" $ 43.00 LF $ - $ - Culvert, Concrete, 15" $ 52.00 LF $ - $ - Culvert, Concrete, 18" $ 55.00 LF $ - $ - Culvert, Concrete, 24" $ 85.00 LF $ - $ - Culvert, Concrete, 30" $ 136.00 LF $ - $ - Culvert, Concrete, 36" $ 165.00 LF $ - $ - Culvert, Concrete, 42" $ 196.00 LF $ - $ - Culvert, Concrete, 48" $ 210.00 LF $ - $ - Culvert, CPP, 6" $ 16.00 LF $ - $ - Culvert, CPP, 8" $ 22.00 LF $ - $ - Culvert, CPP, 12" $ 28.00 LF $ - $ - Culvert, CPP, 15" $ 34.00 LF $ - $ - Culvert, CPP, 18" $ 39.00 LF $ - $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET Culvert, CPP, 24" $ 49.00 LF $ - $ - Culvert, CPP, 30" $ 62.00 LF $ - $ - Culvert, CPP, 36" $ 69.00 LF $ - $ - Ditching $ 12.00 CY $ - $ - Flow Dispersal Trench (1,436 base+) $ 40.00 LF $ - $ - French Drain (3' depth) $ 39.00 LF $ - $ - Geotextile, laid in trench, polypropylene $ 5.00 SY $ - $ - Infiltration pond testing $ 125.00 HR $ - $ - Mid-tank Access Riser, 48" dia, 6' deep $ 2,025.00 EACH $ - $ - Pipe, High Density Water Pipe (HDWP) $ 160.00 LF $ - $ - Pipe, C900 $ 90.00 LF $ - $ - Pond Overflow Spillway $ 18.00 SY $ - $ - Restrictor/Oil Separator, 12" $ 1,500.00 EACH $ - $ - Restrictor/Oil Separator, 15" $ 1,550.00 EACH $ - $ - Restrictor/Oil Separator, 18" $ 1,680.00 EACH $ - $ - Riprap, placed $ 52.00 CY $ - $ - Tank End Reducer (36" Dia) $ 1,280.00 EACH $ - $ - Thru-Inlet at CB $ 150.00 EACH $ - $ - Trash Rack, 12" $ 320.00 EACH $ - $ - Trash Rack, 15" $ 325.00 EACH $ - $ - Trash Rack, 18" $ 350.00 EACH $ - $ - Trash Rack, 21" $ 375.00 EACH $ - $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - $ - $ - $ - SUBTOTAL: $ - $ - MOBILIZATION 10%: $ - CONTINGENCY 15%: $ - TOTAL: $ - $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET GENERAL ITEMS Public Improvements Description Unit Price Unit Quantity Cost Backfill & Compaction- embankment $ 8.00 CY $ - Backfill & Compaction- trench $ 11.00 CY $ - Clear/Remove Brush, by hand (acre) $ 2,363.00 ACRE $ - Bollards - fixed $ 325.00 EACH $ - Bollards - removable $ 600.00 EACH $ - Clearing/Grubbing/Tree Removal $ 6,000.00 ACRE $ - Excavation - bulk $ 2.50 CY $ - Excavation - Trench $ 5.00 CY $ - Fencing, cedar, 6' high $ 25.00 LF $ - Fencing, chain link, 4' $ 19.50 LF $ - Fencing, chain link, vinyl coated, 6' high $ 18.00 LF $ - Fencing, chain link, gate, vinyl coated, 2 $ 1,563.00 EACH $ - Fencing, split rail, 3' high $ 14.00 LF $ - Fill & compact - common barrow $ 27.00 CY $ - Fill & compact - gravel base $ 30.00 CY $ - Fill & compact - screened topsoil $ 45.00 CY $ - Gabion, 12" deep, stone filled mesh $ 62.00 SY $ - Gabion, 18" deep, stone filled mesh $ 86.00 SY $ - Gabion, 36" deep, stone filled mesh $ 152.00 SY $ - Grading, fine, by hand $ 2.00 SY $ - Grading, fine, with grader $ 1.25 SY $ - Guard Post $ 90.00 EACH $ - Monuments $ 104.00 EACH $ - Sensitive Areas Sign $ 20.00 EACH $ - Sodding, 1" deep, sloped ground $ 10.00 SY $ - Topsoil Type A (imported) $ 30.00 CY $ - Traffic control crew ( 2 flaggers ) $ 98.00 HR $ - Trail, 4" chipped wood $ 9.00 SY $ - Trail, 4" crushed cinder $ 10.00 SY $ - Trail, 4" top course $ 9.50 SY $ - Wall, retaining, concrete $ 66.00 SF $ - Wall, rockery $ 13.00 SF $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STREET IMPROVEMENT Public Improvements Description Unit Price Unit Quantity Cost AC Grinding, 4' wide machine < 1000sy $ 35.00 SY $ - AC Grinding, 4' wide machine 1000-2000$ 8.50 SY $ - AC Grinding, 4' wide machine > 2000sy $ 2.50 SY $ - AC Removal/Disposal/Repair $ 60.00 SY $ - Barricade, Type I $ 36.00 LF $ - Barricade Type II $ 25.00 LF $ - Barricade, Type III ( Permanent ) $ 55.00 LF $ - Conduit, 2" $ 5.00 LF $ - Curb & Gutter, rolled $ 20.00 LF $ - Curb & Gutter, vertical $ 15.00 LF $ - Curb and Gutter, demolition and disposa $ 20.00 LF $ - Curb, extruded asphalt $ 5.00 LF $ - Curb, extruded concrete $ 4.50 LF $ - Guard Rail $ 30.00 LF $ - Sawcut, asphalt, 3" depth $ 3.50 LF $ - Sawcut, concrete, per 1" depth $ 3.00 LF $ - Sealant, asphalt $ 2.00 LF $ - Shoulder, gravel, 4" thick $ 11.00 SY $ - Sidewalk, 4" thick $ 40.00 SY $ - Sidewalk, 4" thick, demolition and dispos $ 36.00 SY $ - Sidewalk, 6" thick $ 45.00 SY $ - Sidewalk, 6" thick, demolition and dispos $ 45.00 SY $ - Signs $ - LS $ - Sign, Handicap $ 100.00 EACH $ - Striping, per stall $ 7.50 EACH $ - Street Light System $ - LS $ - Traffic Signal $ - LS $ - Traffic Signal Modification $ - LS $ - Striping, thermoplastic, ( for crosswalk ) $ 3.50 SF $ - Striping, 4" reflectorized line $ 0.40 LF $ - AC Patching/Trenching Restoration $ 100.00 TON $ - Controlled Density Fill (CDF) $ 90.00 CY $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET STREET SURFACING/PAVEMENT Public Improvements Description Unit Price Unit Quantity Cost Asphalt Overlay, 1.5" AC $ 12.00 SY $ - Asphalt Overlay, 2" AC $ 15.00 SY $ - Asphalt Road 2", First 2500 SY $ 10.00 SY $ - Asphalt Road 2", Qty. over 2500SY $ 9.00 SY $ - Asphalt Road 3", First 2500 SY $ 15.00 SY $ - Asphalt Road 3", Qty. over 2500 SY $ 13.00 SY $ - Asphalt Road 5", First 2500 SY $ 22.00 SY $ - Asphalt Road 5", Qty. Over 2500 SY $ 22.00 SY $ - Asphalt Road 6", First 2500 SY $ 25.00 SY $ - Asphalt Road 6", Qty. Over 2500 SY $ 24.00 SY $ - Asphalt Treated Base, 4" thick $ 14.00 SY $ - Gravel Base Course 2" $ 7.50 SY $ - Gravel Base Course 4" $ 15.00 SY $ - Gravel Base Course 6" $ 22.50 SY $ - Gravel Road, 4" rock, First 2500 SY $ 15.00 SY $ - Gravel Road, 4" rock, Qty. over 2500 SY $ 11.00 SY $ - Concrete Road, 5", no base, over 2500 S$ 22.00 SY $ - Concrete Road, 6", no base, over 2500 $ 32.00 SY $ - Thickened Edge $ 11.00 LF $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET WATER SYSTEM Public Improvements Description Unit Price Unit Quantity Cost Blowoff $ 1,800.00 EACH $ - Connection to Existing Water Main $ 2,000.00 EACH $ - Ductile Iron Watermain, CL 52, 6 Inch Dia $ 65.00 LF $ - Ductile Iron Watermain, CL 52, 8 Inch Dia $ 85.00 LF $ - Ductile Iron Watermain, CL 52, 10 Inch Dia $ 103.00 LF $ - Ductile Iron Watermain, CL 52, 12 Inch Dia. $ 125.00 LF $ - Gate Valve, 6 inch Dia $ 250.00 EACH $ - Gate Valve, 8 Inch Dia $ 380.00 EACH $ - Gate Valve, 10 Inch Dia $ 425.00 EACH $ - Gate Valve, 12 Inch Dia $ 500.00 EACH $ - Fire Hydrant Assembly, with Guard Posts $ 3,000.00 EACH $ - Fire Hydrant Assembly, without Guard Posts $ 2,500.00 EACH $ - Air-Vac, 8 Inch Dia $ 6,000.00 EACH $ - Air-Vac,10 Inch Dia $ 7,500.00 EACH $ - Air-Vac, 12 Inch Dia $ 12,000.00 EACH $ - Pressure Reducing Valve Assembly, 8 In. Dia $ 3,800.00 EACH $ - Pressure Reducing Valve Assembly, 10 In. D $ 4,200.00 EACH $ - Pressure Reducing Valve Assembly, 12 In. D $ 5,000.00 EACH $ - Valve Marker Post $ 350.00 EACH $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - Subtotal $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET SANITARY SEWER Public Improvements Description Unit Price Unit Quantity Cost Connection to Existing Sewer Main $ - EACH $ - Clean Outs $ 500.00 EACH $ - Grease Interceptor, 500 gallon $ 6,000.00 EACH $ - Grease Interceptor, 1000 gallon $ 10,000.00 EACH $ - Grease Interceptor, 1500 gallon $ 15,000.00 EACH $ - Side Sewer Pipe, PVC. 4 Inch Dia $ 8.00 LF $ - Side Sewer Pipe, PVC. 6 Inch Dia $ 12.00 LF $ - Sewer Pipe, PVC, 8 inch Dia $ 33.00 LF $ - Sewer Pipe, PVC, 12 Inch Dia $ 41.00 LF $ - Sewer Pipe, PVC, ____ Inch Dia $ - LF $ - Lift Station (Entire System) $ - LS $ - Manhole, 48 Inch Dia $ 3,000.00 EACH $ - for additional depth over 4 feet/per foo$ 532.00 FEET $ - Manhole, 54 Inch Dia $ 3,500.00 EACH $ - for additional depth over 4 feet/per fo $ 532.00 FEET $ - Manhole, 60 Inch Dia $ 3,700.00 EACH $ - for additional depth over 4 feet/per fo $ 532.00 FEET $ - Manhole, 72 Inch Dia $ 4,000.00 EACH $ - for additional depth over 4 feet/per fo $ 625.00 FEET $ - Manhole, 96 Inch Dia $ 5,000.00 EACH $ - for additional depth over 4 feet/per foo $ 625.00 FEET $ - Outside Drop $ - LS $ - Inside Drop $ - LS $ - Pipe, C-900 $ 90.00 LF $ - Pipe, High Density Water Pipe (HDWP) $ 160.00 LF $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ - Rev 7/2017 CONSTRUCTION CALCULATION WORKSHEET LANDSCAPING & VEGETATION Include Public Improvements & Private Description Unit Price Unit Quantity Cost Street Trees $ 500.00 EACH $ - Root Barrier EACH $ - Median Landscaping $ - LS $ - Right-of-Way Landscaping $ - LS $ - Wetland Landscaping $ - LS $ - Private Landscaping $ - LS $ - WRITE-IN-ITEMS $ - $ - $ - $ - $ - $ - Subtotal $ - (INCLUDES GENERAL, STREET, SURFACING, WATER, PUBLIC SEWER, LANDSCAPING) SUBTOTAL $ - MOBILIZATION 10%: $ - CONTINGENCY 15%: $ - GRANDTOTAL: $ - Rev 7/2017 PRE-CONSTRUCTION MEETING AGENDA Community & Economic Development City of Arlington â€¢ 18204 59th Avenue NE â€¢ Arlington, WA 98223 â€¢ Phone (360) 403 3551 Project Name: Graafstra Property Remediation Project No.: PWD#2198 Date: July 22, 2020 Contractor: Clearcreek Contractors Superintendent: Paul Curnett Ph. No.: 206-423-9967 The purpose of this meeting is to provide the most common inspections and noteworthy information. This meeting is not intended to be all-encompassing. It is the responsibility of the Owner, Developer and Contractor to adhere to the approved plans, verify compliance with the City of Arlington Municipal Code, Public Works Design and Construction Standards, International Code Council (ICC), applicable local, state and federal requirements or any order, proclamation, guidance or decision of the Governor. INSPECTIONS â€¢ INSPECTIONS (360-403-3417) MUST BE CALLED IN BEFORE 3:30 PM TO BE ON THE NEXT BUSINESS DAY INSPECTION SCHEDULE â€¢ Inspections are Monday-Friday with exception of Local, State or Federal Holidays. Building, Storm and Civil Inspections - 8 am to 4:30 pm; Water or Sewer inspections - 8:00 am to 3:30 pm â€¢ To cancel or modify an inspection - Building, Storm or Civil call 360-403-3433; Water or Sewer call 360-403-3526 â€¢ It is the responsibility of the Owner, Developer and Contractor to call and arrange for appropriate inspections. Onsite tailgate meetings are advised with each individual inspector prior to installation of their related facilities with those persons who are actually performing the work. â€¢ Failure to call for inspection may result in work being left exposed and/or removed and reconstructed â€¢ Re-inspections may be charged at $127.00 per hour, Â½ hour minimum for failure to call for inspection Submittal Documents ï² ïƒ¾ Contractor contacts and 24 hr. emergency numbers: ïƒ¾ Copies of other agency permits or proof that the Paul Curnett 206-423-9967 paulc@clearcreekcon.com application is in progress â€“ ïƒ¾ Proof of insurance listing the City of Arlington as additional ïƒ¾ Performance Bond must be on file: 3474366 insured: ïƒ¾ Contractorâ€™s License: Current CLEARCI997K1 ïƒ¾ Contact State Historical Preservation Officer and Stillaguamish Tribe if required per Land Use Permit Sam Barr Dept. of Archaeology Historic Preservation Stillaguamish Tribe of Indians 360-586-3065 sbarr@stillaguamish.com Ph.: 360-622-7055 ï² City of Arlington Design and Construction Standards and Specifications. (Available online) ï² Construction Work Hours â€“ Monday â€“ Saturday 7 am to 7pm. No Sundays City recognized or Federal Holidays UPCOMING HOLIDAYS â€“ SEE FULL LIST OF 2020 FEDERAL HOLIDAYS ï² Binders and approved plans shall be kept onsite ï² As-built plans will be required â€“ submit contractor redlined plans with as-built submittal Revised 11/2019 Inspections shall include, but are not be limited to: General Inspection Line 360-403-3417 Do not cover without inspection ï² ~Traffic Control and Drainage/Erosion (TESC) ï² â€¢ Installation Methods â€¢ Materials â€¢ Staking Requirements â€¢ Lamping and videotaping if required â€¢ Bedding â€¢ Bulk Hydrant Use â€“ 360-403-3526 â€¢ Suitability of native backfill & compaction requirements â€¢ Call for Locates ~Curb/Gutter/Sidewalk/Driveway ï² â€¢ Grade compaction, preparation and approval â€¢ Workmanship â€¢ Staking requirements â€¢ Testing (if required) â€¢ Curb ramp location approval â€¢ Protection from weather and vandalism â€¢ Source/Mix Design/Truck Tickets â€¢ Grade compaction, preparation and approval ~Irrigation ï² â€¢ Materials â€¢ Approval prior to backfill ~Roadway ï² â€¢ Subgrade preparation, approval & compaction results â€¢ Source/Mix Design/Truck Tickets â€¢ Top course requirements, approval & compaction results â€¢ ATB & CL. B installation requirements & approval â€¢ Blue tops (if required) â€¢ Workmanship & protection until cured â€¢ Right of Way â€¢ CDF required in right of way per R-140 â€¢ Installation methods â€¢ Materials â€¢ FDC/Fire Department Connection (F) â€¢ Thrust blocks â€¢ Staking requirements â€¢ Testing & Purity â€¢ Bedding (if required) â€¢ Hydrant RPMâ€™s â€¢ CDF required in right of way per R-140 â€¢ Payment of fees prior to meter set General Civil and Storm Drainage Requirements 1. Keep road clean. 2. Dust control required. 3. Maintain construction entrance â€“ use railroad ballast â€“ no spawls. 4. Silt fence as needed â€“ contact for tailgate discussion. 5. All grouting shall be inspected inside and out. 6. Sand collars required unless otherwise specified. 7. All risers to be wet set and mudded inside and out. 8. All infiltration areas to be inspected before cover. 9. Provide protection for all infiltrating materials / amended soils, railroad ballast, drain rock 10. ECO Pans required for concrete clean up or approved wash down area with water tight containment. 11. CDF is required in right of way per R-140, up to the bottom of asphalt; no compaction required. 12. A Traffic Control Plan shall be submitted and approved prior to any work within the public Right of Way. 13. Landscaping â€“ root barriers are required per Standard Detail R-270. General Building Requirements 14. Permit numbers shall be added to all required reports and emailed to the following: o Raelynn Jones â€“ rjones@arlingtonwa.gov 360-403-3436 o Launa Peterson â€“ lpeterson@arlingtonwa.gov 360-403-3527 o Nova Heaton â€“ nheaton@arlingtonwa.gov 360-403-3437 o Kevin Olander â€“ kolander@arlingtonwa.gov 360-403-3433 o Brian Grieve- bgrieve@arlingtonwa.gov 360-403-3438 / 360-913-1396 (cell) Revised 11/2019 15. Plan Revisions shall be submitted via hard copy to CED Department for review. o Two (2) copies of revised plans shall be required along with an electronic copy Revised 11/2019 City of Arlington Community & Economic Development July 13, 2020 Graafstra Enterprises, LLC 2313 127th Ave NE Arlington, WA 98223 c/o Landed Gentry Development 504 E. Fairhaven Ave Burlington, WA 98233 RE: Pre-Construction Requirements Project Name: Graafstra Property Remediation Project Address: 604 E. Gilman Ave, Arlington, WA 98223 Project No.: PWD-2198 Dear Anna, In order for work to commence at the Graafstra Property Remediation project site, the following items need to be submitted to the City of Arlington: 1. Payment of Permit Fees: $525.00 2. Approved TESC and Grading Plan 3. A performance bond will need to be on file with the City of Arlington. This bond is to insure completion of the following and shall be indicated on the security: All included infrastructure relating to water, sanitary sewer, and stormwater drainage systems, any right of way improvements along with any private and public landscaping. Performance Bond Estimated Cost of Construction is $47,105.00 x 150% = $70,657.50 4. Contractorâ€™s License No. and 24 hour emergency contact information. 5. Contractor must obtain a Business License with the City of Arlington. 6. Contractor Proof of Insurance with the City of Arlington named as Additional Insured. 7. Project CESCL with current certificate. (1 acre or more) 8. Department of Ecology Construction Stormwater General Permit. (1 acre or more) 18204 59th Avenue NE, #B - Arlington, WA, 98223 - 360-403-3551 â€“ www.arlingtonwa.gov Once the items above have been received and approved, a pre-construction meeting will be scheduled. Project closeout information The performance bond shall be released when inspection of the grading and approval of all Full Site Civil work has been completed, as-built plans, easements, dedications, and bills of sale have been approved and a two-year, 20% maintenance bond is on file with the City of Arlington. The City of Arlington Performance Bond form is included. Should you have any questions or require additional information, please contact me at 360.403.3436 or rjones@arlingtonwa.gov. Sincerely, Raelynn Jones Permit Technician I Community & Economic Development Technical Memorandum Timothy S. Brown, L.Hg. Date: June 24, 2021 From: Kellie M. Andrews, L.G. To: Clearcreek Contractors, Inc. Project Manager: Timothy S. Brown, L.Hg. th Principal/Associate 3203 15 Street Timothy S. Brown, L.Hg. in Charge: Everett, Washington 98201 Project Name: Gilman Property Attn: Mr. Paul Curnett Project No: 20200248V002 Subject: Environmental Services This technical memorandum summarizes the environmental services performed by Associated Earth Sciences, Inc. (AESI) to support an underground storage tank (UST) removal at the Gilman Property (Property). The Property is located at 604 East Gilman Avenue in Arlington, Washington (Figure 1). The Property is currently undergoing redevelopment. Environmental services were performed in accordance with our Scope and Budget Authorization provided to Clearcreek Contractors Inc., dated May 13, 2021. The purpose of AESIâ€™s environmental services was to observe and document removal of a heating oil UST that was exposed during grading activities at the Property. Prior to removal of the UST, Clearcreek Contractors, Inc. pumped out the remaining heating oil and triple rinsed the UST in March 2021. UST REMOVAL AND SOIL SAMPLING AESI observed removal of the UST and performed soil sampling at the Property on May 18, 2021. The UST was located near a demolished barn associated with the former dairy farm. Clearcreek Contractors, Inc. utilized a 50D mini excavator to remove the UST and subsequently remove potential petroleum-contaminated soils surrounding the former UST location. The UST measured 4 feet in diameter and 6 feet in length and was observed to be in good condition and no holes were observed on the bottom, sides, or ends of the UST. One hole was observed on the top of the UST and apparently occurred when the UST was exposed during grading activities. The UST was direct-loaded into a flatbed truck and disposed of by Clearcreek Contractors, Inc. AESI utilized field-screening methods to assess the extent of potential contamination. Field screening methods included visual observation, notations of odor, and obtaining headspace vapor measurements using a photoionization detector (PID) to detect the presence of volatile organic compounds. AESI noted a petroleum (heating oil) odor after removal of the UST. AESI collected a waste characterization sample (WC-20210518) from directly beneath the UST at a depth of approximately 6 feet. The waste characterization sample had a PID measurement of 312 parts per million (ppm). Kirkland | Tacoma | Mount Vernon 425-827-7701 | www.aesgeo.com Associated Earth Sciences, Inc. Technical Memorandum Soils were excavated and placed on Visqueen plastic until field-screening methods indicated potential petroleum-contaminated soils were removed from the former UST location. The excavation limits were approximately 10 feet wide (east-west) by 10 feet long (north-south) with the eastern 6 feet of the excavation extending 16 feet long (Figure 2). Sidewall samples (WSW-20210518, ESW-20210518, SSW-20210518, and NSW-20210518) were collected at approximately 8 feet below ground surface (bgs) and the bottom of excavation sample (BTTM-20210518) was collected at approximately 13 feet bgs. PID measurements did not exceed 0.9 ppm from the performance samples collected at the limits of the excavation. The approximate soil sampling locations and excavation limits are shown on Figure 2 and a photo log is included in Appendix A. Soil samples were placed directly into laboratory-prepared sample containers and labeled with their unique sample identification. Sample containers were placed in a chilled cooler immediately following sampling, and subsequently transported to the analytical laboratory under standard chain of custody protocols. The soil samples were submitted to Friedman and Bruya, Inc. of Seattle, Washington for chemical analysis. The soil samples were analyzed for diesel- and oil-range petroleum hydrocarbons (DRPH and ORPH) by Northwest Total Petroleum Hydrocarbon (NWTPH) Method NWTPH-Dx. SOIL SAMPLE RESULTS Soil sample analytical results were compared to the applicable Model Toxics Control Act (MTCA) Method A cleanup levels. The waste characterization soil sample detected DRPH at a concentration of 14,000 milligrams per kilogram and did not detect ORPH above the laboratory reporting limit. The bottom of excavation and sidewall performance samples were below the laboratory reporting limits for DRPH and ORPH. Based on the analytical results, and AESIâ€™s field observations, DRPH-impacted soils were removed from the Property in the location of the former heating oil UST. Approximately 75 tons of impacted soils were disposed of at a permitted facility by Clearcreek Contractors, Inc. A summary of soil sample laboratory analytical results are presented in Table 1. Analytical laboratory reports and sample chain of custody forms are included in Appendix B. Attachments: Figure 1: Vicinity Map Figure 2: Site and Exploration Plan Table 1: Summary of Soil Analytical Results - Total Petroleum Hydrocarbons Appendix A: Photo Log Appendix B: Laboratory Test Certificates and Chain of Custody KMA/ld - 20200248V002-002 Project No: 20200248V002 Page 2 FIGURES Â¬Â« Â¬Â« Â£Â¤ SUBJECT PROPERTY !( Â¬Â« Â¥ Â¥ Snohomish County Island 0 1000 2000 County VICINITY MAP FEET DATA SOURCES / REFERENCES: GILMAN PROPERTY USGS: 7.5' SERIES TOPOGRAPHIC MAPS, ESRI/I-CUBED/NATIONAL NOTE: BLACK AND WHITE GEOGRAPHIC SOCIETY 2013 REPRODUCTION OF THIS COLOR ARLINGTON, WASHINGTON ORIGINAL MAY REDUCE ITS SNOHOMISH CO: STREETS, CITY LIMITS, PARCELS, 4/20 EFFECTIVENESS AND LEAD TO PROJ NO. DATE: FIGURE: LOCATIONS AND DISTANCES SHOWN ARE APPROXIMATE INCORRECT INTERPRETATION 20200248V002 6/21 1 G:\GIS_Projects\aaY2020\200248 Graafstra Property\aprx\20200248V002 F1 VM_Gilman.aprx | 20200248V002 F1 VM_Gilman | 6/2/2021 5:28 PM LEGEND: * SOIL SAMPLE - 5/21 EXCAVATION LIMITS UST - REMOVED NOTE: LOCATION AND DISTANCES SHOWN ARE APPROXIMATE. NSW NOTES: 1. BASE MAP REFERENCE: SNOHOMISH COUNTY * PICTOMETRY 2012 WC WSW * ** * ESW BTTM SSW* NSW * WC WSW * ** * ESW BTTM SSW* BLACK AND WHITE REPRODUCTION OF THIS COLOR ORIGINAL MAY REDUCE ITS EFFECTIVENESS AND LEAD TO INCORRECT INTERPRETATION. a s s o c i a t e d .cdr e a r t h s c i e n c e s i n c o r p o r a t e d N SITE AND EXCAVATION 0 20 40 GILMAN PROPERTY FEET ARLINGTON, WASHINGTON PROJ NO. DATE: FIGURE: 20200248V002 6/21 2 200248 Graafstra \ 20200248V002 F2 Excav TABLES Table 1 Summary of Soil Analytical Results Total Petroleum Hydrocarbons Gilman Property Arlington, Washington Analytical Results (1) (milligrams per kilogram [mg/kg]) Sample ID Sample Date Sample Location Depth (feet) PID Diesel Range Hydrocarbons Heavy Oil Range Hydrocarbons Waste Characterization Sample WC-20210518 5/18/2021 Below UST - West Side 6 312 ppm 14,000 < 250 Performance Samples BTTM-20210518 5/18/2021 Bottom of excavation 13 0.9 ppm < 50 < 250 WSW-20210518 5/18/2021 West sidewall 8 0.6 ppm < 50 < 250 ESW-20210518 5/18/2021 East sidewall 8 0.6 ppm < 50 < 250 SSW-20210518 5/18/2021 South sidewall 8 0.7 ppm < 50 < 250 NSW-20210518 5/18/2021 North sidewall 8 0.9 ppm < 50 < 250 Model Toxics Control Act Cleanup Level (2) 2,000 2,000 NOTES: (1) Samples were analyzed by Friedman & Bruya, Inc. of Seattle, Washington by NWTPH Method NWTPH-Dx. (2) MTCA Cleanup Regulation, Chapter 173-340-900 of WAC, Table 740-1 Method A Soil Cleanup Levels for Unrestricted Land Uses. < = not detected at concentration exceeding the laboratory reporting limit. Red = concentration exceeds MTCA CUL. AESI = Associated Earth Sciences, Inc. CUL = Cleanup Level EPA = U.S. Environmental Protection Agency ppm = parts per million AESI Project No. 20200248V002 1 of 1 APPENDIX A Photo Log Photo Log Kirkland | Tacoma | Mount Vernon 425-827-7701| www.aesgeo.com Photograph 1 â€“ Observing the UST before removal. Photograph 2 â€“ Removing the UST. The bottom of the UST is visible. Page 1 of 3 Photo Log Photograph 3 â€“ Standing on the northwest corner of the excavation. Photograph 4 â€“ Standing on the southeast corner of the excavation. Page 2 of 3 Photo Log Photograph 5 â€“ Observing the stockpile from the north. Photograph 6 â€“ Observing the stockpile from the northwest. Page 3 of 3 APPENDIX B Laboratory Test Certificates and Chain of Custody FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS James E. Bruya, Ph.D. 3012 16th Avenue West Yelena Aravkina, M.S. Seattle, WA 98119-2029 Michael Erdahl, B.S. (206) 285-8282 Arina Podnozova, B.S. fbi@isomedia.com Eric Young, B.S. www.friedmanandbruya.com May 20, 2021 Kellie Andrews, Project Manager Associated Earth Sciences, Inc. 911 5th Avenue, Suite 100 Kirkland, WA 98033 Dear Ms Andrews: Included are the results from the testing of material submitted on May 18, 2021 from the Graafstra Property 200248V002, F&BI 105321 project. There are 4 pages included in this report. Any samples that may remain are currently scheduled for disposal in 30 days, or as directed by the Chain of Custody document. If you would like us to return your samples or arrange for long term storage at our offices, please contact us as soon as possible. We appreciate this opportunity to be of service to you and hope you will call if you have any questions. Sincerely, FRIEDMAN & BRUYA, INC. Michael Erdahl Project Manager Enclosures c: Tim Brown AE10520R.DOC FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS CASE NARRATIVE This case narrative encompasses samples received on May 18, 2020 by Friedman & Bruya, Inc. from the Associated Earth Sciences Graafstra Property 200248V002, F&BI 105321 project. Samples were logged in under the laboratory IDâ€™s listed below. Laboratory ID Associated Earth Sciences 105321 -01 WC-20210518 105321 -02 BTTM-20210518 105321 -03 WSW-20210518 105321 -04 ESW-20210518 105321 -05 SSW-20210518 105321 -06 NSW-20210518 All quality control requirements were acceptable. 1 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 05/20/21 Date Received: 05/18/21 Project: Graafstra Property 200248V002, F&BI 105321 Date Extracted: 05/18/21 Date Analyzed: 05/18/21 RESULTS FROM THE ANALYSIS OF SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL AND MOTOR OIL USING METHOD NWTPH-Dx Results Reported on a Dry Weight Basis Results Reported as mg/kg (ppm) Surrogate Sample ID Diesel Range Motor Oil Range (% Recovery) Laboratory ID (C10-C25) (C25-C36) (Limit 53-144) WC-20210518 14,000 <250 79 105321-01 BTTM-20210518 <50 <250 89 105321-02 WSW-20210518 <50 <250 90 105321-03 ESW-20210518 <50 <250 92 105321-04 SSW-20210518 <50 <250 101 105321-05 NSW-20210518 <50 <250 99 105321-06 Method Blank <50 <250 89 01-1255 MB 2 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Date of Report: 05/20/21 Date Received: 05/18/21 Project: Graafstra Property 200248V002, F&BI 105321 QUALITY ASSURANCE RESULTS FROM THE ANALYSIS OF SOIL SAMPLES FOR TOTAL PETROLEUM HYDROCARBONS AS DIESEL EXTENDED USING METHOD NWTPH-Dx Laboratory Code: 105317-01 (Matrix Spike) Sample Percent Percent Reporting Spike Result Recovery Recovery Acceptance RPD Analyte Units Level (Wet Wt) MS MSD Criteria (Limit 20) Diesel Extended mg/kg (ppm) 5,000 100 102 98 64-133 4 Laboratory Code: Laboratory Control Sample Percent Reporting Spike Recovery Acceptance Analyte Units Level LCS Criteria Diesel Extended mg/kg (ppm) 5,000 104 58-147 3 FRIEDMAN & BRUYA, INC. _________________________________________________ ENVIRONMENTAL CHEMISTS Data Qualifiers & Definitions a - The analyte was detected at a level less than five times the reporting limit. The RPD results may not provide reliable information on the variability of the analysis. b - The analyte was spiked at a level that was less than five times that present in the sample. Matrix spike recoveries may not be meaningful. ca - The calibration results for the analyte were outside of acceptance criteria. The value reported is an estimate. c - The presence of the analyte may be due to carryover from previous sample injections. cf - The sample was centrifuged prior to analysis. d - The sample was diluted. Detection limits were raised and surrogate recoveries may not be meaningful. dv - Insufficient sample volume was available to achieve normal reporting limits. f - The sample was laboratory filtered prior to analysis. fb - The analyte was detected in the method blank. fc - The analyte is a common laboratory and field contaminant. hr - The sample and duplicate were reextracted and reanalyzed. RPD results were still outside of control limits. Variability is attributed to sample inhomogeneity. hs - Headspace was present in the container used for analysis. ht â€“ The analysis was performed outside the method or client-specified holding time requirement. ip - Recovery fell outside of control limits due to sample matrix effects. j - The analyte concentration is reported below the lowest calibration standard. The value reported is an estimate. J - The internal standard associated with the analyte is out of control limits. The reported concentration is an estimate. jl - The laboratory control sample(s) percent recovery and/or RPD were out of control limits. The reported concentration should be considered an estimate. js - The surrogate associated with the analyte is out of control limits. The reported concentration should be considered an estimate. lc - The presence of the analyte is likely due to laboratory contamination. L - The reported concentration was generated from a library search. nm - The analyte was not detected in one or more of the duplicate analyses. Therefore, calculation of the RPD is not applicable. pc - The sample was received with incorrect preservation or in a container not approved by the method. The value reported should be considered an estimate. ve - The analyte response exceeded the valid instrument calibration range. The value reported is an estimate. vo - The value reported fell outside the control limits established for this analyte. x - The sample chromatographic pattern does not resemble the fuel standard used for quantitation. 4 CLEARCREEK CONTRACTORS INC. Job# 221024 CC Edwards Gilman Trail UST Decommissioning 604 E Gilman Ave Arlington, WA 98223 Job # Date Facility Material Type Scale Ticket # Trucking Co. Truck # BOL # Tons 221024 5/26/2021 Cadman Class III/IV Soil 1124514147 Clearcreek 43 9976 18.32 221024 5/26/2021 Cadman Class III/IV Soil 1124514151 Clearcreek 43 9976 20.05 221024 5/26/2021 Cadman Class III/IV Soil 1124514148 Clearcreek 43 9976 20.04 221024 5/26/2021 Cadman Class III/IV Soil 1124514150 Clearcreek 43 9976 20.52 78.93 Clearcreek Contractors, Inc. Country Charm Development 604 East Gilman Ave Arlington, WA 98223 Job # Date Facility Material Type Scale Ticket # Trucking Co. Truck # BOL # Tons 220071 8/5/2020 Cadman Class I/II Soil 1124070847 Springbrook 3 28.36 220071 8/5/2020 Cadman Class I/II Soil 1124070871 Springbrook 3 35.07 220071 8/5/2020 Cadman Class I/II Soil 1124070890 Springbrook 3 30.22 220071 8/5/2020 Cadman Class I/II Soil 1124070906 Springbrook 3 34.89 220071 8/6/2020 Cadman Class I/II Soil 1124070917 Springbrook 3 29.99 220071 8/6/2020 Cadman Class I/II Soil 1124070911 Springbrook 3 34.71 220071 8/6/2020 Cadman Class I/II Soil 1124070925 Springbrook 3 29.91 220071 8/6/2020 Cadman Class I/II Soil 1124070935 Springbrook 3 29.08 Class I/II Soil Total 252.23 220071 8/5/2020 Cadman Class III/IV Soil 1124509492 Springbrook 3 31.04 220071 8/6/2020 Cadman Class III/IV Soil 1124509609 Springbrook 3 30.37 Class III/IV Soil Total 61.41 220071 8/5/2020 Stilly Sand & Gravel Pit Run 41731 Clearcreek 43 16.96 220071 8/6/2020 Stilly Sand & Gravel Pit Run 41767 Clearcreek 43 32.18 220071 8/6/2020 Stilly Sand & Gravel Pit Run 41772 Clearcreek 43 31.78 220071 8/6/2020 Stilly Sand & Gravel Pit Run 41776 Clearcreek 43 31.88 220071 8/6/2020 Stilly Sand & Gravel Pit Run 41778 Clearcreek 43 32.16 220071 8/7/2020 Stilly Sand & Gravel Pit Run 41781 Clearcreek 43 32.24 220071 8/7/2020 Stilly Sand & Gravel Pit Run 41782 Clearcreek 43 29.64 220071 8/7/2020 Stilly Sand & Gravel Pit Run 41794 Clearcreek 43 31.44 220071 8/7/2020 Stilly Sand & Gravel Pit Run 41797 Clearcreek 43 31.40 220071 8/7/2020 Stilly Sand & Gravel Pit Run 41801 Clearcreek 43 31.46 220071 8/7/2020 Stilly Sand & Gravel Pit Run 41805 Clearcreek 43 31.08 220071 8/7/2020 Stilly Sand & Gravel Pit Run 41809 Clearcreek 43 31.82 220071 8/7/2020 Stilly Sand & Gravel Pit Run 41817 Clearcreek 43 31.40 Pit Run Total 395.44 220071 8/5/2020 Iron Mountain Quarry Spalls 129019 Clearcreek 43 16.35 Quarry Spalls Total 16.35 220071 7/27/2020 Iron Mountain Quarry Drain Rock 128046 Clearcreek 43 9687 17.15 Drain Rock Total 17.15 FIELD REPORT Kirkland | Tacoma | Mount Vernon 425-827-7701| www.aesgeo.com Date Project Name Project No. Report No. 08/05/2020 Graafstra Property Remediation 20200248V001 001 Location Municipality AESI Project Manager AESI Field Rep 604 East Gilman Avenue City of Arlington Bradford Drew Kendra Pivaroff-Ward Permit No. Client/Owner Attn Requested By 2198 Country Charm Development, LLC Anna Nelson Contractor Engineer/Architect General Contractor Grading Contractor Weather Core Design, Inc. N/A Clearcreek Contractors Sunny, 80s THE FOLLOWING WAS NOTED: AESI was on-site at 07:00 to observe the backfill of the remedial excavation. Upon arrival, we met with Clearcreek Contractors (CCC) for a health and safety meeting and to discuss the scope for the day. CCC used a Vac-truck to remove approximately 650 gallons of water from the bottom of the excavation. The base of the excavation was approximately 22 ft by 18 ft and ranged in depth from 12 to 13.5 ft below ground surface (bgs). The sidewalls of the excavation were benched and sloped for safety. CCC used an Hitachi ZAXIS 200LC excavator to place a single truck load of 2- to 4-inch quarry spalls across the base of the excavation, filling the excavation to approximately 12 ft bgs. The quarry spalls were tamped down using the bucket of the excavator then filter fabric was place over the spalls. CCC placed one lift of imported bank-run sand, compacted by a Ho-Pac, to bridge the base of the excavation. CCC then placed and compacted the previously excavated on-site soil in thin, loose lifts using the excavator/Ho-Pac. The on-site soils were derived from the upper 4- to 5-feet of the excavation, had been stockpiled and tested for chemicals of concern, and were determined to be suitable for use as backfill for the remedial excavation. The on-site soil consisted of fine-to medium sand with some gravel and cobbles and trace silt. Water was added to the fill as it was being placed to help achieve optimum moisture. Once the backfill reached a depth of 8.5 feet bgs, AESI used a nuclear densometer to measure the dry density and moisture of the compacted soil. A summary of our compaction test results can be found in Table 1 and the approximate locations of the compaction tests are illustrated on Figure 1. The dry density of the compacted soil was tested against a Proctor value that was either corrected or uncorrected for over-sized rock content (by mass) based on visual observation of cobble content within each lift. All compaction tests met or exceeded 95% of the Proctor value in accordance with project specifications. Based on our observations and compaction test results, the fill placed today was firm and unyielding and is suitable for use as structural fill support for future development on site, in our opinion. Table 1 â€“ Summary of compaction test results on 8/05/2020. Test Depth Fill Proctor (ASTM-D1557) Dry Density Moisture Compaction Pass / Fail No. (ft bgs) Source Dry Density, Moisture (pcf) (%) (%) 1 -8.5 On-site 126.4 pcf, 10.8% 121.8 8.6 96 Pass 2 -8.5 On-site 133.7 pcf, 8.6% 126.7 6.5 95 Pass 3 -8.5 On-site 126.4 pcf, 10.8% 123.2 6.9 97 Pass 4 -7.5 On-site 126.4 pcf, 10.8% 122.2 6.4 97 Pass 5 -7.5 On-site 133.7 pcf, 8.6% 127.5 7.1 95 Pass 6 -7.5 On-site 126.4 pcf, 10.8% 123.0 7.8 97 Pass 7 -7.5 On-site 126.4 pcf, 10.8% 122.3 7.9 97 Pass 8 -7.5 On-site 133.7 pcf, 8.6% 128.4 8.6 96 Pass 9 -6.5 On-site 133.7 pcf, 8.6% 128.9 8.6 96 Pass 10 -6.5 On-site 133.7 pcf, 8.6% 127.3 7.1 95 Pass Date Mailed: Principal / PM: Bradford Drew, P.E. v.7.20 This document is considered a DRAFT until signed or initialed by an AESI Principal or Project Manager Page 1 of 2 FIELD REPORT Date Project Name Project No. Report No. 08/05/2020 Graafstra Property Remediation 20200248V001 001 * 6 * 2, 5 * 1, 4, 9 * 3, 7 * 8, 10 Figure 1 â€“ Approximate locations of compaction tests taken on 8/05/2020. See Table 1 for test results. Photo 1 â€“ Base of excavation prior to dewatering or backfill. Page 2 of 2 FIELD REPORT Kirkland | Tacoma | Mount Vernon 425-827-7701| www.aesgeo.com Date Project Name Project No. Report No. 08/06/2020 Graafstra Property Remediation 20200248V001 002 Location Municipality AESI Project Manager AESI Field Rep 604 East Gilman Avenue City of Arlington Bradford Drew Kendra Pivaroff-Ward Permit No. Client/Owner Attn Requested By 2198 Country Charm Development, LLC Anna Nelson Contractor Engineer/Architect General Contractor Grading Contractor Weather Core Design, Inc. N/A Clearcreek Contractors Rain, 60s THE FOLLOWING WAS NOTED: AESI was on-site at 07:15 to observe the backfill of the remedial excavation. Upon arrival, we met with Jim, Matt and Bart of Clearcreek Contractors (CCC). AESI observed CCC place and compact site-derived and imported soils in thin, loose lifts using an Hitachi ZAXIS 200LC excavator with a Ho-Pac attachment. The site-derived soils were previously removed from the upper 4- to 5-feet of the remedial excavation and stockpiled until the absence of chemicals of concern was confirmed by analytical laboratory testing. The on-site soil consisted of fine-to medium sand with some gravel and cobbles and trace silt. Water was added to the on-site soil as it was being placed to help achieve optimum moisture. Once all suitable on-site material was used, CCC began importing bank run sand from Stilly Sand and Gravel. AESI used a nuclear densometer to measure the dry density and moisture of the compacted soil. A summary of the compaction test results can be found in Table 1 and the approximate locations of compaction tests are illustrated on Figure 1. The dry density of the compacted soil was tested against a Proctor value that was either corrected or uncorrected for over-sized rock content (by mass) based on visual observation of cobble content within each lift. All compaction tests met or exceeded 95% of the Proctor value in accordance with project specifications. Based on our observations and compaction test results, the fill placed today was firm and unyielding and is suitable for use as structural fill support for future development on site, in our opinion. Table 1 â€“ Summary of compaction test results on 8/06/2020. Test Depth Fill Proctor (ASTM-D1557) Dry Density Moisture Compaction Pass / Fail No. (ft bgs) Source Dry Density, Moisture (pcf) (%) (%) 1 -5.0 On-site 133.7 pcf, 8.6% 126.3 7.6 95 Pass 2 -4.5 On-site 126.4 pcf, 10.8% 123.9 7.9 98 Pass 3 -4.0 On-site 133.7 pcf, 8.6% 126.7 8.4 95 Pass 4 -3.5 On-site 126.4 pcf, 10.8% 122.6 8.6 97 Pass 5 -2.0 On-site 133.7 pcf, 8.6% 127.5 8.4 95 Pass 6 -3.0 Import 130.6 pcf, 3.3% 124.4 7.6 95 Pass 7 -1.0 Import 130.6 pcf, 3.3% 124.4 6.6 95 Pass 8 -1.0 Import 130.6 pcf, 3.3% 125.4 6.1 96 Pass Date Mailed: Principal / PM: Bradford Drew, P.E. v.7.20 This document is considered a DRAFT until signed or initialed by an AESI Principal or Project Manager Page 1 of 2 FIELD REPORT Date Project Name Project No. Report No. 08/06/2020 Graafstra Property Remediation 20200248V001 002 * 6 * 4 * 3 * 8 * 2 * 5 * 1 * 7 Figure 1 â€“ Approximate locations of compaction tests taken on 8/06/2020. See Table 1 for test results. Page 2 of 2 FIELD REPORT Kirkland | Tacoma | Mount Vernon 425-827-7701| www.aesgeo.com Date Project Name Project No. Report No. 08/07/2020 Graafstra Property Remediation 20200248V001 003 Location Municipality AESI Project Manager AESI Field Rep 604 East Gilman Avenue City of Arlington Bradford Drew Kendra Pivaroff-Ward Permit No. Client/Owner Attn Requested By 2198 Country Charm Development, LLC Anna Nelson Contractor Engineer/Architect General Contractor Grading Contractor Weather Core Design, Inc. N/A Clearcreek Contractors Mostly Cloudy, 60s THE FOLLOWING WAS NOTED: AESI was on-site at 07:10 to observe the backfill of the remedial excavation. Upon arrival, we met with Jim, Matt and Bart of Clearcreek Contractors (CCC). Monitoring Wells: Groundwater monitoring wells MW-1 and MW-4 were within the footprint of the remedial excavation. At the beginning of the excavation, the upper 3 to 4 feet of soil and the well monuments were removed from MW-1 and MW-4 to prevent damage to the wells during the excavation. The concrete seals on these monitoring wells were not removed or damaged. Today, CCC placed 12-inch diameter Sonotubes around the top of the original concrete seal of each monitoring well. CCC then used a cement mixture to fill around the casing of each monitoring well and replaced the original well monuments. Excavation Backfill: AESI observed CCC place and compact imported bank run sand from Stilly Sand and Gravel in thin, loose lifts using an Hitachi ZAXIS 200LC excavator with a Ho-Pac attachment. AESI used a nuclear densometer to measure the dry density and moisture of the compacted soil. A summary of the compaction test results can be found in Table 1 and the approximate locations of compaction tests are illustrated on Figure 1. All compaction tests met or exceeded 95% of the Proctor value in accordance with project specifications. Based on our observations and compaction test results, the fill placed today was firm and unyielding and is suitable for use as structural fill support for future development on site, in our opinion. Once the excavation was backfilled to the original grade, CCC placed the grass/topsoil mat that was stripped from the excavation area back to its original location for permanent erosion control. Date Mailed: Principal / PM: Bradford Drew, P.E. v.7.20 This document is considered a DRAFT until signed or initialed by an AESI Principal or Project Manager Page 1 of 4 FIELD REPORT Date Project Name Project No. Report No. 08/07/2020 Graafstra Property Remediation 20200248V001 003 Table 1 â€“ Summary of compaction test results on 8/07/2020. Test Depth Fill Proctor (ASTM-D1557) Dry Density Moisture Compaction Pass / Fail No. (ft bgs) Source Dry Density, Moisture (pcf) (%) (%) 1 -2.5 Import 130.6 pcf / 3.3% 127.2 5.7 97 Pass 2 -1.5 Import 130.6 pcf / 3.3% 129.2 7.2 99 Pass 3 -2 Import 130.6 pcf / 3.3% 123.4 6.6 95 Pass 4 -2 Import 130.6 pcf / 3.3% 125.4 6.1 96 Pass 5 -1.5 Import 130.6 pcf / 3.3% 125.2 6.0 96 Pass 6 0 Import 130.6 pcf / 3.3% 124.3 5.2 95 Pass 7 -0.5 Import 130.6 pcf / 3.3% 127.3 4.9 97 Pass 8 -0.5 Import 130.6 pcf / 3.3% 124.9 6.5 96 Pass 9 -0.5 Import 130.6 pcf / 3.3% 128.8 5.5 98 Pass * 1 * 4 * 9 * 6 * 5 * 8 * 3 * 7 * 2 Figure 1 â€“ Approximate locations of compaction tests taken on 8/07/2020. See Table 1 for test results. Page 2 of 4 FIELD REPORT Date Project Name Project No. Report No. 08/07/2020 Graafstra Property Remediation 20200248V001 003 Photo 1 â€“ Sonotube placed around MW-4 before replacing the well monument. Photo 2 â€“ Well monument placed on MW-4. Page 3 of 4 FIELD REPORT Date Project Name Project No. Report No. 08/07/2020 Graafstra Property Remediation 20200248V001 003 Photo 3 â€“ The final lift of soil being compacted over the excavation footprint. The cone in the foreground is placed over MW-4 and the cone in the midground is placed over MW-1. (Photo taken looking west). Photo 4 â€“ Original grass/topsoil mat replaced over the excavation footprint. (Photo taken looking west). Page 4 of 4 DATE (MM/DD/YYYY) CERTIFICATE OF LIABILITY INSURANCE 07/16/2020 THIS CERTIFICATE IS ISSUED AS A MATTER OF INFORMATION ONLY AND CONFERS NO RIGHTS UPON THE CERTIFICATE HOLDER. THIS CERTIFICATE DOES NOT AFFIRMATIVELY OR NEGATIVELY AMEND, EXTEND OR ALTER THE COVERAGE AFFORDED BY THE POLICIES BELOW. THIS CERTIFICATE OF INSURANCE DOES NOT CONSTITUTE A CONTRACT BETWEEN THE ISSUING INSURER(S), AUTHORIZED REPRESENTATIVE OR PRODUCER, AND THE CERTIFICATE HOLDER. IMPORTANT: If the certificate holder is an ADDITIONAL INSURED, the policy(ies) must have ADDITIONAL INSURED provisions or be endorsed. If SUBROGATION IS WAIVED, subject to the terms and conditions of the policy, certain policies may require an endorsement. A statement on this certificate does not confer rights to the certificate holder in lieu of such endorsement(s). CONTACT PRODUCER Taryn Schram von Haupt NAME: Rice Insurance LLC PHONE (360) 734-1161 FAX (360) 734-1173 (A/C, No, Ext): (A/C, No): 1400 Broadway E-MAIL taryn@riceinsurance.com ADDRESS: P.O. Box 639 INSURER(S) AFFORDING COVERAGE NAIC # Bellingham WA 98227 Homeland Insurance Co of NY INSURER A : INSURED Western National Mutual Insurance Company 15377 INSURER B : Clearcreek Contractors, Inc. INSURER C : 3203 15th St INSURER D : INSURER E : Everett WA 98201 INSURER F : COVERAGES CERTIFICATE NUMBER: 20-21 REVISION NUMBER: THIS IS TO CERTIFY THAT THE POLICIES OF INSURANCE LISTED BELOW HAVE BEEN ISSUED TO THE INSURED NAMED ABOVE FOR THE POLICY PERIOD INDICATED. NOTWITHSTANDING ANY REQUIREMENT, TERM OR CONDITION OF ANY CONTRACT OR OTHER DOCUMENT WITH RESPECT TO WHICH THIS CERTIFICATE MAY BE ISSUED OR MAY PERTAIN, THE INSURANCE AFFORDED BY THE POLICIES DESCRIBED HEREIN IS SUBJECT TO ALL THE TERMS, EXCLUSIONS AND CONDITIONS OF SUCH POLICIES. LIMITS SHOWN MAY HAVE BEEN REDUCED BY PAID CLAIMS. INSR ADDLSUBR POLICY EFF POLICY EXP LTR TYPE OF INSURANCE INSD WVD POLICY NUMBER (MM/DD/YYYY) (MM/DD/YYYY) LIMITS COMMERCIAL GENERAL LIABILITY 1,000,000 EACH OCCURRENCE $ DAMAGE TO RENTED 250,000 CLAIMS-MADE OCCUR PREMISES (Ea occurrence) $ 10,000 MED EXP (Any one person) $ A Y Y 7930063390003 05/21/2020 05/21/2021 2,000,000 PERSONAL & ADV INJURY $ 2,000,000 GEN'L AGGREGATE LIMIT APPLIES PER: GENERAL AGGREGATE $ PRO- 2,000,000 POLICY JECT LOC PRODUCTS - COMP/OP AGG $ $ OTHER: AUTOMOBILE LIABILITY COMBINED SINGLE LIMIT $ 1,000,000 (Ea accident) ANY AUTO BODILY INJURY (Per person) $ B OWNED SCHEDULED Y Y CPP 1208935 05/21/2020 05/21/2021 BODILY INJURY (Per accident) $ AUTOS ONLY AUTOS HIRED NON-OWNED PROPERTY DAMAGE $ AUTOS ONLY AUTOS ONLY (Per accident) Underinsured motorist $ 1,000,000 UMBRELLA LIAB 5,000,000 OCCUR EACH OCCURRENCE $ A EXCESS LIAB Y Y 7930092990001 05/21/2020 05/21/2021 5,000,000 CLAIMS-MADE AGGREGATE $ 0.00 DED RETENTION $ $ WORKERS COMPENSATION PER OTH- WA Stop Gap STATUTE ER AND EMPLOYERS' LIABILITY Y / N 1,000,000 ANY PROPRIETOR/PARTNER/EXECUTIVE E.L. 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Automobile Additional Insured per form WNCA27 0616, Waiver of Subrogation applies. All endorsements apply when required by written contract or agreement. UMBRELLA COVERAGE APPLIES TO GENERAL LIABILITY, AUTO LIABILITY, EMPLOYERS LIABILITY, PROFESSIONAL LIABILITY, AND POLLUTION LIABILITY. CERTIFICATE HOLDER CANCELLATION SHOULD ANY OF THE ABOVE DESCRIBED POLICIES BE CANCELLED BEFORE THE EXPIRATION DATE THEREOF, NOTICE WILL BE DELIVERED IN City of Arlington ACCORDANCE WITH THE POLICY PROVISIONS. 18204 59th Ave NE AUTHORIZED REPRESENTATIVE Arlington WA 98223 Â© 1988-2015 ACORD CORPORATION. All rights reserved. ACORD 25 (2016/03) The ACORD name and logo are registered marks of ACORD AGENCY CUSTOMER ID: LOC #: ADDITIONAL REMARKS SCHEDULE Page of AGENCY NAMED INSURED Rice Insurance LLC Clearcreek Contractors, Inc. POLICY NUMBER CARRIER NAIC CODE EFFECTIVE DATE: ADDITIONAL REMARKS THIS ADDITIONAL REMARKS FORM IS A SCHEDULE TO ACORD FORM, FORM NUMBER: 25 FORM TITLE: Certificate of Liability Insurance: Notes Leased/Rented Equipment: Policy CPP1213606 05/21/2020 - 05/21/2021 Amount of Insurance: $250,000 Deductible: $1,000 ACORD 101 (2008/01) Â© 2008 ACORD CORPORATION. All rights reserved. The ACORD name and logo are registered marks of ACORD ! ! ! VJKU!GPFQTUGOGPV!EJCPIGU!VJG!RQNKE[/!RNGCUG!TGCF!KV!ECTGHWNN[/! ! CFFKVKQPCN!KPUWTGF! !QYPGTU-!NGUUGGU!QT! EQPVTCEVQTU! !UEJGFWNGF!RGTUQP!QT! QTICPK\CVKQP! !HQTO!K! ! Vjku!gpfqtugogpv!qpn{!oqfkhkgu!eqxgtcig!rtqxkfgf!wpfgt!vjg!hqnnqykpi<! ! EQOOGTEKCN!IGPGTCN!NKCDKNKV[!EQXGTCIG!RCTV! EQPVTCEVQTU!GPXKTQPOGPVCN!NKCDKNKV[!EQXGTCIG!RCTV! ! UEJGFWNG! ! ! 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Kpenwfgu!eqr{tkijvgf!ocvgtkcn!qh!Kpuwtcpeg!Ugtxkegu!Qhhkeg-!Kpe/! Rcig!3!qh!3! ! Eqr{tkijv!3124-!QpgDgceqp!Kpuwtcpeg!Itqwr!NNE ! COMMERCIAL AUTO CA 99 48 10 13 THIS ENDORSEMENT CHANGES THE POLICY. PLEASE READ IT CAREFULLY. POLLUTION LIABILITY â€“ BROADENED COVERAGE FOR COVERED AUTOS â€“ BUSINESS AUTO AND MOTOR CARRIER COVERAGE FORMS This endorsement modifies insurance provided under the following: BUSINESS AUTO COVERAGE FORM MOTOR CARRIER COVERAGE FORM With respect to coverage provided by this endorsement, the provisions of the Coverage Form apply unless modified by the endorsement. A. Covered Autos Liability Coverage is changed as "Covered pollution cost or expense" does follows: not include any cost or expense arising out of the actual, alleged or threatened dis- 1. Paragraph a. of the Pollution Exclusion ap- charge, dispersal, seepage, migration, plies only to liability assumed under a release or escape of "pollutants": contract or agreement. a. Before the "pollutants" or any prop- 2. With respect to the coverage afforded by erty in which the "pollutants" are Paragraph A.1. above, Exclusion B.6. Care, contained are moved from the place Custody Or Control does not apply. where they are accepted by the B. Changes In Definitions "insured" for movement into or For the purposes of this endorsement, Para- onto the covered "auto"; or graph D. of the Definitions Section is replaced b. After the "pollutants" or any prop- by the following: erty in which the "pollutants" are D. "Covered pollution cost or expense" means contained are moved from the any cost or expense arising out of: covered "auto" to the place where they are finally delivered, disposed 1. Any request, demand, order or stat- of or abandoned by the "insured". utory or regulatory requirement that any "insured" or others test for, moni- Paragraphs a. and b. above do not tor, clean up, remove, contain, treat, apply to "accidents" that occur away detoxify or neutralize, or in any way from premises owned by or rented to respond to, or assess the effects of an "insured" with respect to "pollut- "pollutants"; or ants" not in or upon a covered "auto" if: 2. Any claim or "suit" by or on behalf of a governmental authority for damages be- (1) The "pollutants" or any prop- cause of testing for, monitoring, clean- erty in which the "pollutants" ing up, removing, containing, treating, are contained are upset, over- detoxifying or neutralizing, or in any turned or damaged as a result way responding to or assessing the of the maintenance or use of a effects of "pollutants". covered "auto"; and (2) The discharge, dispersal, seep- age, migration, release or escape of the "pollutants" is caused directly by such upset, overturn or damage. CA 99 48 10 13 Â© Insurance Services Office, Inc., 2011 Page 1 of 1 WN CA 27 06 16 BUSINESS AUTO ENHANCEMENT ENDORSEMENT The Business Auto Enhancement Endorsement is an optional endorsement that provides coverage enhancements. The following is a summary of broadened coverages provided by this endorsement. No coverage is provided by this summary, refer to following endorsement for changes in your policy. SUMMARY OF COVERAGES PAGE Accidental Airbag Deployment Coverage 4 Auto Loan/Lease Gap Coverage 4 Blanket Additional Insured 2 Blanket Waiver of Subrogation 5 Broadened Definition of Insured includes: ï‚· Newly Acquired Organizations for up to 180 Days 2 ï‚· Employees as Insureds 2 ï‚· Subsidiaries in Which You Own 50% or More 2 Deductible Waiver for Glass Repair 3 Employee Hired Auto 2, 5 Fellow Employee Coverage 3 Hired Auto Physical Damage Coverage 4 Knowledge of Accident, Claim, Suit or Loss 5 Loss Of Use Expenses - Amended 3 Personal Effects 3 Rental Reimbursement Coverage 4 Supplementary Payments - Amended: ï‚· Bail Bonds up to $5,000 2 ï‚· Loss of Earnings up to $500/Day 2 Transportation Expense Limits â€“ Amended 3 Unintentional Failure to Disclose Hazards 5 WN CA 27 06 16 Includes copyrighted material of Insurance Services Office, with its permission Page 1 of 5 WN CA 27 06 16 THIS ENDORSEMENT CHANGES THE POLICY. PLEASE READ IT CAREFULLY BUSINESS AUTO ENHANCEMENT ENDORSEMENT This endorsement modifies the insurance provided under the following: BUSINESS AUTO COVERAGE FORM With respect to the coverage provided by this endorsement, the provisions of the Coverage Form apply unless modified by this endorsement. The SECTIONS of the Business Auto Coverage Form identified in this endorsement will be amended as shown below. SECTION II â€“ COVERED AUTOS LIABILITY g. Any â€œemployeeâ€ of yours is an â€œinsuredâ€ while COVERAGE AMENDMENTS operating a covered â€œautoâ€ hired or rented under a contract or agreement in the â€œemployeeâ€™sâ€ A. Who Is An Insured name, with your permission, while performing SECTION II â€“ COVERED AUTOS LIABILITY duties related to the conduct of your business. COVERAGE, A. Coverage, 1. Who Is An Insured B. Blanket Additional Insured is amended to add: SECTION ll â€“ COVERED AUTOS LIABILITY d. Any legally incorporated subsidiary of yours in COVERAGE, A. Coverage, 1. Who Is An Insured, which you own more than 50% of the voting paragraph c. is amended to add the following: stock on the effective date of this coverage form. Any person or organization who is required under a However, â€œinsuredâ€ does not include any written contract or agreement between you and that subsidiary of yours that is an â€œinsuredâ€ under person or organization, that is signed and executed any other automobile liability policy, or would be by you before the â€œbodily injuryâ€ or â€œproperty an â€œinsuredâ€ under such policy but for damageâ€ occurs and that is in effect during the policy termination of such policy or the exhaustion on period, to be named as an additional insured is an such policyâ€™s limits of insurance. â€œinsuredâ€ for Liability Coverage, but only for e. Any organization which is newly acquired or damages to which this insurance applies and only to formed by you and over which you maintain the extent that persons or organization qualifies as majority ownership. However, coverage under an â€œinsuredâ€ under the Who Is An Insured provision this provision: contained in Section ll. (1) is afforded only for the first 180 days after C. Liability Coverage Extensions â€“ Supplementary you acquire or form the organization or until Payments the end of the policy period, whichever comes first; SECTION II â€“ COVERED AUTOS LIABILITY COVERAGE, A. Coverage, 2. Coverage (2) does not apply to â€œbodily injuryâ€ or â€œproperty Extensions, a. Supplementary Payments is damageâ€ that results from an â€œaccidentâ€ that amended by replacing subparagraphs (2) and (4) occurred before you formed or acquired the with the following: organization; (2) Up to $5,000 for cost of bail bonds (including (3) does not apply to any newly acquired or bonds for related traffic law violations) required formed organization that is a joint venture or because of an â€œaccidentâ€ we cover. We do not partnership; and have to furnish these bonds. (4) does not apply to an â€œinsuredâ€ under any (4) All reasonable expenses incurred by the other automobile liability policy, or would be â€œinsuredâ€ at our request, including actual loss of an â€œinsuredâ€ under such a policy but for ter- earnings up to $500 a day because of time off mination of such policy or the exhaustion of from work. such policyâ€™s limits of insurance. f. Any â€œemployeeâ€ of yours is an â€œinsuredâ€ while using a covered â€œautoâ€ you donâ€™t own, hire or borrow in your business or your personal affairs. WN CA 27 06 16 Includes copyrighted material of Insurance Services Office, with its permission Page 2 of 5 D. Fellow Employee Coverage D. Glass Repair â€“ Deductible Waiver SECTION II â€“ COVERED AUTOS LIABILITY SECTION III â€“ PHYSICAL DAMAGE COVERAGE, COVERAGE, B. Exclusions, 5. Fellow Employee, A. Coverage, 3. Glass Breakage â€“ Hitting A Bird the following is added: Or Animal â€“ Falling Objects Or Missiles, is Co-Employee Lawsuit Defense Cost amended by adding the following: Reimbursement No deductible will apply to glass breakage if such glass is repaired, in a manner acceptable to us, If a suit seeking damages for â€œbodily injuryâ€ to any rather than replaced. fellow â€œemployeeâ€ of the â€œinsuredâ€ arising out of and in the course of the fellow â€œemployeeâ€™sâ€ employment E. Hired Auto Physical Damage or while performing duties related to the conduct of SECTION III â€“ PHYSICAL DAMAGE COVERAGE, your business, or a suit seeking damages brought A. Coverage is amended by adding the following: by the spouse, child, parent, brother or sister of that fellow â€œemployeeâ€, is brought against you, we will 5. Hired Auto Physical Damage reimburse reasonable costs that you incur in the If hired â€œautosâ€ are covered â€œautosâ€ for Liability defense of such matters. Any reimbursement made Coverage and if Comprehensive, Specified pursuant to this sub-section will be in addition to the Causes of Loss, or Collision coverages are pro- limits of liability set forth in the Declarations. vided under this coverage form for any â€œautoâ€ you own, then the Physical Damage Coverages SECTION III â€“ PHYSICAL DAMAGE COVERAGE provided are extended to â€œautosâ€ you hire of like AMENDMENTS kind and use, subject to the following: A. Transportation Expense â€“ Limits Amended a. The most we will pay for any one â€œlossâ€ is $50,000 or the actual cash value or cost to SECTION III â€“ PHYSICAL DAMAGE COVERAGE, repair or replace, whichever is less, minus a A. Coverage, 4. Coverage Extensions, a. Trans- deductible; portation Expenses is amended by replacing $20 b. The deductible will be equal to the largest per day/$600 maximum limit with $50 per day/$1000 deductible applicable to any owned â€œautoâ€ maximum. for that coverage. Any Comprehensive B. Hired Auto Physical Damage â€“ Loss Of Use deductible does not apply to â€œlossâ€ caused Expenses â€“ Limits Amended by fire or lightening; SECTION III â€“ PHYSICAL DAMAGE COVERAGE, c. Hired Auto Physical Damage coverage is A. Coverage, 4. Coverage Extensions, b. Loss of excess over any other collectible insurance; Use Expenses is amended by replacing the $20 per and day/$600 maximum limit with $50 per day/$750 d. Subject to the above limit, deductible and maximum limit. excess provisions we will provide coverage C. Personal Effects Coverage equal to the broadest coverage applicable to any covered â€œautoâ€ you own. SECTION lll â€“ PHYSICAL DAMAGE COVERAGE, A. Coverage, 4. Coverage Extensions is amended If a limit for Hired Auto Physical Damage is by adding the following: indicated in the Declarations, then that limit replaces, and is not added to, the $50,000 limit c. Personal Effects indicated above. We will pay up to $500 for â€œlossâ€ to personal effects, which are: (1) Owned by an â€œinsuredâ€; and (2) In or on your covered â€œauto.â€ This coverage applies only in the event of the total theft of your covered â€œauto.â€ No deductible applies to this coverage WN CA 27 06 16 Includes copyrighted material of Insurance Services Office, with its permission Page 3 of 5 F. Rental Reimbursement G. Accidental Airbag Deployment Coverage SECTION III â€“ PHYSICAL DAMAGE COVERAGE SECTION III â€“ PHYSICAL DAMAGE COVERAGE, A. Coverage, is amended by adding the following: A. Coverage is amended by adding the following: 6. Rental Reimbursement 7. Accidental Airbag Deployment Coverage This coverage applies only to a covered â€œautoâ€ of We will pay to reset or replace factory installed the private passenger or light truck type as airbag(s) in any covered â€œautoâ€ for accidental follows: discharge, other than discharge due to a collision loss. a. We will pay for rental reimbursement expenses incurred by you for the rental of a This coverage is applicable only if comprehen- private passenger or light truck type â€œautoâ€ sive coverage applies to the covered â€œautoâ€. because of â€œlossâ€ to a covered private pas- This coverage is excess over any other collecti- senger or light truck type â€œautoâ€. Payment ble insurance or reimbursement by manufac- applies in addition to the otherwise applica- turerâ€™s warranty. ble amount of each coverage you have on a covered private passenger or light truck type H. Auto Loan/Lease Gap Coverage â€œauto.â€ No deductibles apply to this SECTION III PHYSICAL DAMAGE COVERAGE, coverage. Item A., Coverage, is amended by adding the b. We will pay only for those expenses incurred following: during the policy period beginning 24 hours 8. Auto Loan/Lease Gap Coverage after the â€œlossâ€ and ending, regardless of the This coverage applies only to a covered â€œautoâ€ policyâ€™s expiration, with the lesser of the fol- described or designated in the Schedule or in lowing number of days: the Declarations as including physical damage (1) The number of days reasonably re- coverage. quired to repair or replace the covered In the event of a covered total â€œlossâ€ to a private passenger or light truck type covered â€œautoâ€ described or designated in the â€œautoâ€. If â€œlossâ€ is caused by theft, this number of days is added to the number Schedule or in the Declarations, we will pay any of days it takes to locate the covered unpaid amount due on the lease or loan for a private passenger or light truck type covered â€œautoâ€ less: â€œautoâ€ and return it to you; or a. The amount paid under the Physical (2) 30 days. Damage Coverage Section on the policy; and c. Our payment is limited to the lesser of the following amounts: b. Any: (1) Necessary and actual expenses (1) Overdue lease/loan payments at the incurred, or time of the â€œlossâ€; (2) $50 per day, up to a maximum of (2) Financial penalties imposed under a $1,000. lease for excessive use, abnormal wear d. This coverage does not apply while there and tear or high mileage; are spare or reserve private passenger or (3) Security deposits not returned by the light truck type â€œautosâ€ available to you for lessor; your operations. (4) Costs for extended warranties, Credit e. If â€œlossâ€ results from the total theft of a Life Insurance, Health, Accident or covered â€œautoâ€ of the private passenger or Disability Insurance purchased with the light truck type, we will pay under this cover- loan or lease; and age only that amount of your rental reim- (5) Carry-over balances from previous bursement expenses which is not already loans or leases. provided for under SECTION III â€“ PHYSICAL DAMAGE COVERAGE, A. Coverage, 4. Coverage Extensions. For the purposes of this Rental Reimbursement coverage, light truck is defined as a truck with a gross vehicle weight of 10,000 lbs. or less as defined by the manufacturer as the maximum loaded weight the auto is designed to carry. WN CA 27 06 16 Includes copyrighted material of Insurance Services Office, with its permission Page 4 of 5 C. Unintentional Failure to Disclose Hazards SECTION IV â€“ BUSINESS AUTO CONDITIONS SECTION IV â€“ BUSINESS AUTO CONDITIONS, B. AMENDMENTS General Conditions, 2. Concealment, Misrepre- A. Duties In The Event Of Accident, Claim, Suit Or sentation Or Fraud, is amended by adding the Loss Amended following paragraph: SECTION IV â€“ BUSINESS AUTO CONDITIONS, A. If you unintentionally fail to disclose any hazards Loss Conditions, 2. Duties In The Event Of existing at the inception date of the policy, or during Accident, Claim, Suit Or Loss, a. is amended by the policy period in connection with any additional adding the following: hazards, we will not deny coverage under this Cov- This condition applies only when the â€œaccidentâ€ or erage Part because of such failure. â€œlossâ€ is known to: D. Employee Hired Auto (1) You, if you are an individual; SECTION IV â€“ BUSINESS AUTO CONDITIONS, B. (2) A partner, if you are a partnership; General Conditions, 5. Other Insurance, (3) An executive officer or insurance manager, if paragraph b. is deleted and replace by the following: you are a corporation; or b. For Hired Auto Physical Damage Coverage, the (4) A member or manager, if you are a limited following are deemed to be a covered â€œautosâ€ liability company. you own: But, this section does not amend the provisions (1) Any covered â€œautoâ€ you lease, hire, rent or relating to notification of police, protection or exami- borrow. nation of the property which was subject to the (2) Any covered â€œautoâ€ hired or rented by your â€œlossâ€. â€œemployeeâ€ under a contract in that individual â€œemployeeâ€™sâ€ name, with your B. Blanket Waiver of Subrogation permission, while performing duties related Section IV â€“ BUSINESS AUTO CONDITIONS, A. to the conduct of your business. Loss Conditions, 5. Transfer of Rights of However, any â€œautoâ€ that is leased, hired, rented Recovery Against Others to Us, is amended by or borrowed with a driver is not a covered â€œautoâ€. adding the following exception: However, we waive any right of recovery we may have against any person or organization to the extent required of you by a written contract signed and executed prior to any â€œaccidentâ€ or â€œlossâ€, provided that the â€œaccidentâ€ or â€œlossâ€ arises out of operations contemplated by such contract. The waiver applies only to the person or organization designated in such contract. WN CA 27 06 16 Includes copyrighted material of Insurance Services Office, with its permission Page 5 of 5 !!"#$ !% &'( $)(*(+,!$,&- ./0 1&2-$ )13! *(4(5&'*(-$6771 ./0.8899 :;<=>!, 3!4(-4( ./0?@?A?B C2 5,-D$&-6E FF @090 --!(5#&- G0 FHI::I J/ !--!K5!-+(+D(-$ )=L&* AMNO (*(+,!$,&-"& '($ &5(2* P/Q0 = H;<=,5*!-4( R@8 1< R99Q8 JS9 AQ9 1TU%7<V< .99W08 !(5)--X&-(# %! 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