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Home My WebLink AboutDERR-2025-000577 © Copyright 2024 by The ERM International Group Limited and/or its affiliates (‘ERM’). All Rights Reserved. No part of this work may be reproduced or transmitted in any form or by any means, without prior written permission of ERM. Page 1 1050 S.W. 6th Avenue Suite 1650 Portland, OR, 97204 T +1 503 488 5282 F +1 503 488 5142 erm.com MEMO TO Mr. Chris Howell FROM Justin Dauphinais DATE 02 May 2024 REFERENCE EDO Western Cleanup Site #C069 SUBJECT Addendum to the Quarterly Groundwater Monitoring Report: July 2021- May 2022, dated September 16, 2022 Dear Mr. Howell: Please see the attached addendum in regard to the Quarterly Groundwater Monitoring Report: July 2021- May 2022, dated September 16, 2022. The following changes have been made to the report. Section 1.1 Facility Ownership History and Operations • Update to include the ownership change from LAW Realty Co to DCW-SLC, LLC. Section 7 Recommendations • Semiannual groundwater monitoring, along with quarterly well gauging has been added to the recommendations. Justin Dauphinais ERM The business of sustainability Prepared For: L3Harris EDO Western Corp. 2645 South 300 West South Salt Lake City, Utah Quarterly Groundwater Monitoring Report: July 2021–May 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 16 September 2022 (Revised 26 April 2024) Project No.: 0600676 www.erm.com Version: 1.1 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 (Revised 26 April 2024) Document details Document title Quarterly Groundwater Monitoring Report: July 2021–May 2022 Document subtitle L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 Project No. 0600676 Date 16 September 2022 (Revised 26 April 2024) Version 1.1 Author ERM Client Name L3Harris EDO Western Corp www.erm.com Version: 1.1 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 (Revised 26 April 2024) Signature Page 16 September 2022 (Revised 26 April 2024) Quarterly Groundwater Monitoring Report: July 2021–May 2022 L3Harris L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 Mike Kraeski Partner Justin Dauphinais Senior Project Manager ERM-West, Inc. 136 East South Temple Suite 2150 Salt Lake City, UT 84111 T: +1 801 204 4300 F: +1 801 595 8484 QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 CONTENTS www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page i CONTENTS 1. INTRODUCTION ................................................................................................................................ 4 1.1 Facility Ownership History and Operations ........................................................................................... 4 1.2 Project Background .............................................................................................................................. 4 2. GROUNDWATER MONITORING PLAN ........................................................................................... 6 2.1 Groundwater Level Measurements ....................................................................................................... 6 2.2 Groundwater Sample Collection ........................................................................................................... 6 2.3 Sample Labelling and Custody ............................................................................................................. 6 2.4 Equipment Calibration .......................................................................................................................... 6 2.5 Equipment Decontamination ................................................................................................................. 6 2.6 Bio-Trap® Sampling ............................................................................................................................. 6 2.7 Waste Management .............................................................................................................................. 7 3. LABORATORY ANALYTICAL METHODS ....................................................................................... 8 4. GROUNDWATER FIELD DATA AND INVESTIGATION RESULTS ................................................ 9 4.1 Groundwater Level Data ....................................................................................................................... 9 4.2 Groundwater Screening Levels ............................................................................................................. 9 4.3 Groundwater Sample Analytical Results ............................................................................................... 9 4.3.1 Groundwater Analytical Summary Tables .......................................................................... 10 4.3.2 Shallow Monitoring Well Groundwater VOC Analytical Results ......................................... 10 4.3.3 Intermediate Groundwater VOC Analytical Results ........................................................... 10 4.3.4 Discussion of 1,4-Dioxane Analytical Results .................................................................... 10 4.3.5 Biogeochemistry Analytical Results .................................................................................................... 11 4.3.6 Discussion of Bio-Trap® Results ........................................................................................................ 11 4.3.7 Discussion of Mann-Kendall Trends ................................................................................................... 11 5. QUALITY ASSURANCE/QUALITY CONTROL .............................................................................. 13 5.1 QAPP Variances ................................................................................................................................. 13 5.2 Quality Assurance/Quality Control Sample Results ............................................................................ 13 5.3 Field Duplicate Samples ..................................................................................................................... 13 5.4 Trip Blanks .......................................................................................................................................... 14 5.5 Matrix Spike/Matrix Spike Duplicate Samples ..................................................................................... 14 6. CONCLUSIONS ............................................................................................................................... 15 7. RECOMMENDATIONS .................................................................................................................... 17 8. REFERENCES ................................................................................................................................. 18 TABLES FIGURES APPENDIX A FIELD FORMS AND DOCUMENTATION APPENDIX B DAILY QUALITY CONTROL FORMS APPENDIX C LABORATORY ANALYTICAL REPORTS APPENDIX D MICROBIAL INSIGHTS BIO-TRAP® QUANTARRAY®-CHLOR STUDY REPORT APPENDIX E MANN-KENDALL TREND ANALYSIS QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 CONTENTS www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page ii APPENDIX F DATA QUALITY EVALUATION MEMOS List of Tables Table 4-1: Groundwater Elevation Summary Table 4-2: Shallow Groundwater Analytical Summary Table 4-3: Intermediate Groundwater Analytical Summary Table 4-4: Mann-Kendall Analysis Results List of Figures Figure 1-1: Site Location Map Figure 1-2: Monitoring Well location Map Figure 4-1: Groundwater Contour Map – July 2021 Figure 4-1a: Shallow Groundwater Contour Map – July 2021 Figure 4-1b: Intermediate Groundwater Contour Map – July 2021 Figure 4-2: Groundwater Contour Map November – 2021 Figure 4-2a: Shallow Groundwater Contour Map – November 2021 Figure 4-2b: Intermediate Groundwater Contour Map – November 2021 Figures 4-3: Groundwater Contour Map – February 2022 Figure 4-3a: Shallow Groundwater Contour Map – February 2022 Figure 4-3b: Intermediate Groundwater Contour Map – February 2022 Figure 4-4: Groundwater Contour Map – May 2022 Figure 4-4a: Shallow Groundwater Contour Map – May 2022 Figure 4-4b: Intermediate Groundwater Contour Map – May 2022 Figure 5-1a: Shallow Groundwater Analytical Map – July 2021 Figure 5-1b: Intermediate Groundwater Analytical Map – November 2021 Figure 5-2a: Shallow Groundwater Analytical Map – November 2021 Figure 5-2b: Intermediate Groundwater Analytical Map – November 2021 Figure 5-3a: Shallow Groundwater Analytical Map – February 2022 Figure 5-3b: Intermediate Groundwater Analytical Map – February 2022 Figure 5-4a: Shallow Groundwater Analytical Map – May 2022 Figure 5-4b: Intermediate Groundwater Analytical Map – May 2022 QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 CONTENTS www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page iii Acronyms and Abbreviations µg/L micrograms per liter ATF acoustic test facility bgs below ground surface COC constituent of concern DCA Dichloroethane DCE Dichloroethene DERR Division of Environmental Response and Remediation EDO EDO Western Corporation ERM ERM-West, Inc. Eurofins Eurofins TestAmerica mg/L milligrams per liter PCE Tetrachloroethene QA/QC quality assurance/quality control RLs reporting limits RSL regional screening level SCA Site Characterization Addendum SCA2 Site Characterization Addendum 2 SVIA Soil Vapor Investigation TCE Trichloroethene UDEQ Utah Department of Environmental Quality UGWQS Utah Groundwater Quality Standard USEPA United States Environmental Protection Agency VCP Voluntary Cleanup Program VOCs Volatile Organic Compounds QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.1 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 (Revised 26 April 2024) Page 4 INTRODUCTION 1. INTRODUCTION The L3Harris EDO Western Corporation (EDO) site (site), located at 2645 South 300 West South Salt Lake City, Utah, entered into the Utah Department of Environmental Quality (UDEQ) Voluntary Cleanup Program (VCP) in January 2011 and was assigned VCP Site Number C069. The Site Characterization Addendum 2 (SCA 2) (ERM 2019a) report recommended conducting a vapor intrusion (VI) investigation and conducting quarterly monitoring of existing wells for one year. The UDEQ-approved Work Plan for the VI investigation and the quarterly groundwater monitoring program was approved on 5 September 2019. The results of the VI investigation were presented to UDEQ in a report dated 3 March 2020 and the Quarterly Groundwater Monitoring Report, October 2019–July 2020, dated 18 December 2020 was submitted to UDEQ. An additional four quarters of groundwater monitoring was recommended in the December 2020 Quarterly Report. A technical comments letter, dated 2 April 2021, was received from the UDEQ Division of Environmental Response and Remediation (DERR) regarding ERM-West, Inc.’s (ERM’s) Quarterly Monitoring and VI Investigation Reports. A letter response to DERR comments was submitted on 25 August 2021, and an amended Quarterly Groundwater Monitoring Report was submitted on 25 August 2021. Additionally, in response to DERR’s comments a Supplemental Soil Vapor Investigation (SVIA) Work Plan was submitted to UDEQ on 25 February 2022. This report presents the results of the second annual quarterly groundwater monitoring program completed in accordance with the approved Work Plan (ERM, 2019b). 1.1 Facility Ownership History and Operations The EDO facility is located on a 5.45-acre parcel located at 2645 South 300 West in South Salt Lake City, Utah. The site is occupied by an active manufacturing facility (the Facility) comprised of two buildings (Building 1 and Building 2), and currently employs over 100 staff that work up to three shifts a day, four to seven days per week. In addition to the site buildings, the Facility also includes two water-filled, acoustic test facilities (ATFs), which are used to test equipment. ATF1 is an above-grade tank located within the south-eastern portion of Building 1. ATF2 is a lined below-grade testing structure, located between Buildings 1 and 2. ATF2 is elliptical in shape and is approximately 105 feet wide by 140 feet long with a depth of approximately 30 to 35 feet. As of January 20, 2021, LAW Realty Co, a Utah General Partnership sold the property located at 2645 South 330 West, Salt Lake City, UT 84115 to DCW-SLC, LLC, a Utah limited liability company. DCW- SLC, LLC assumed and agreed to perform all of the landlord’s obligation under the Lease from and after such date. On January 7, 2022, EDO Western Corporation changed its name to L3Harris EDO Western Corporation. A site location map is provided as Figure 1-1 and a monitoring well location map is provided as Figure 1- 2. 1.2 Project Background Site characterization and investigation activities under the VCP program include the following:  The initial Site Characterization (SC) Investigation was conducted in June 2012 (AECOM 2012).  The subsequent Site Characterization Addendum (SCA) (ERM, 2015) and SCA 2 (ERM, 2019a) investigations were conducted between 2014 and 2018.  The VI Investigation was conducted in October 2019 (ERM, 2020a). QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.1 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 (Revised 26 April 2024) Page 5 INTRODUCTION  The first Quarterly Groundwater Monitoring program was implemented October 2019 through July 2020.  The second Quarterly Groundwater Monitoring program was implemented October 2021 through May 2022.  An SVIA was conducted in June 2022. Based on the prior investigations, the primary analytes detected at concentrations greater than background concentrations and regulated standards include lead in shallow soil and volatile organic compounds (VOCs) in groundwater. VOCs detected in groundwater primarily include tetrachloroethene (PCE) and associated natural degradation products. PCE was used at the Facility for degreasing operations until approximately 1994 when it was replaced with 3MTM NovecTM 72DE Engineered Fluid (AECOM 2012). Quarterly sampling of groundwater wells and analyzing the samples for VOCs were recommended in the SCA2 Report (ERM, 2019a) “to evaluate overall VOC concentration trends and collect data for future risk evaluation. Evaluation of potential further monitoring needs would be conducted after completion of the first year of quarterly groundwater monitoring.” Based on quarterly sampling of groundwater wells, during October 2019 through July 2020, it was recommended that an additional four quarters of sampling and analysis be completed (ERM, 2021). The SVIA was implemented to address technical comments from the UDEQ DERR in a letter, dated 2 April 2021, in regard to ERM’s Vapor Intrusion Assessment Report (ERM 2020a) and subsequent Response to DERR Comments Letter, dated 25 August 2021 (ERM 2021). The SVIA work was completed following discussion with DERR on 2 February 2022 regarding the scope and objectives for additional subsurface vapor sampling. QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page 6 GROUNDWATER MONITORING PLAN 2. GROUNDWATER MONITORING PLAN This section outlines the sampling procedures and methods that were used during the groundwater monitoring activities. Existing wells are shown on Figure 1-2. During sampling, quality assurance/quality control (QA/QC) samples were collected in accordance with Section 5.0. 2.1 Groundwater Level Measurements Prior to conducting each groundwater monitoring event, the static groundwater level was measured at site monitoring well locations using an electric water level meter. Groundwater depths were recorded to the nearest 0.01 foot and are presented in Table 4-1. 2.2 Groundwater Sample Collection Groundwater samples were collected using a peristaltic pump and low-flow, low-volume sampling methods in accordance with the general sampling procedure presented in the Work Plan. During sampling, field data were recorded on the Field Sampling Forms which are included in Appendix A. Daily field activities were recorded on Daily Quality Control Reports during the investigation; copies of these reports are included in Appendix B. During the groundwater sampling, QA/QC samples were collected in accordance with Section 5.0. Groundwater samples were analyzed for VOCs using U.S. Environmental Protection Agency (USEPA) Method 8260B as outlined in Section 3.0. UDEQ was notified before each sampling event. UDEQ collected a split sample at monitoring well MW-9i during the November 2021 quarterly sampling event. The split sample was collected from ERM’s sampling equipment at the time of the standard and duplicate sample collection. There were no deviations from the work plan during the split sample collection. 2.3 Sample Labeling and Custody Samples were labeled, sealed, and shipped in accordance with procedures described in the Work Plan. 2.4 Equipment Calibration The water quality meter used to measure the groundwater quality parameters during sampling was calibrated daily in accordance with the manufacture’s specifications prior to sampling. 2.5 Equipment Decontamination The groundwater-sampling activities were conducted using a peristaltic pump equipped with disposable tubing, which does not require decontamination. However, if non-disposable sampling equipment was utilized, decontamination was performed to prevent potential cross-contamination between sample locations and was decontaminated prior to use and after each subsequent in accordance with the procedures prescribed in the Work Plan. 2.6 Bio-Trap® Sampling Microbial Insights Bio-Trap® passive samplers (Bio-Traps®) were installed at monitoring wells MW-9i, MW-14i, and MW-19i on 12 May 2022. The Bio-Traps were installed within the monitoring well screen intervals at depths of 23’, 22’, and 23’ for MW-9i, MW-14i, and MW-19i respectively. The Bio-Traps® were tied to the well plugs using nylon line, which was measured out to the appropriate length prior to installation. To minimize sediment impact, the Bio-Traps were placed so they did not touch the bottom of the well during the installation process. QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page 7 GROUNDWATER MONITORING PLAN The Bio-Traps® were deployed for 39 days and recovered from all three wells on 20 June 2022. They were packed in an ice filled cooler and returned to Microbial Insights for quantification by the QuantArray®-Chlor approach via overnight shipment on the same day. 2.7 Waste Management During sampling, purge water was collected and containerized in Department of Transportation-approved containers for proper management by EDO in accordance with applicable state and federal regulations. Purge water containers were properly labeled with the accumulation date and contents. Purge water was disposed of off-site in accordance with applicable state and federal regulations. As disposable sampling equipment (i.e., peristaltic pump with disposable tubing) were utilized, decontamination rinsate was not generated during the sampling activities. Disposable personal protective equipment (e.g., nitrile gloves), used paper towels, disposable tubing and other incidental sampling materials were disposed of off-site as municipal waste in the Facility’s waste collection roll-off. QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page 8 LABORATORY ANALYTICAL METHODS 3. LABORATORY ANALYTICAL METHODS Groundwater samples were submitted to the Eurofins TestAmerica (Eurofins) laboratories in Denver, Colorado, and Pittsburgh, Pennsylvania. Eurofins is certified by the State of Utah Department of Health and accredited by the National Environmental Laboratory Accreditation Program. Samples were analyzed for VOCs using Analytical Methods SW-8260D and SW-8260B. The standard laboratory reporting limits (RLs) associated with the applied analytical methods as presented in the UDEQ approved Groundwater Monitoring and Vapor Intrusion Assessment Work Plan were used for the July 2021 sampling event. The laboratory minimum detection limits were used for the November 2021, February 2022, and May 2022 sampling events. The RLs and minimum detection limits do not account for potential dilutions that may have been required on the samples. During the May 2022 sampling event samples from intermediate monitoring wells MW-9i, MW-14i, and MW-19i were analyzed for dissolved gases by Method RSK-175, total and dissolved iron, manganese by Method 6010D, sulfate by Method 9056A, and total organic carbon by Method 9060A. QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page 9 GROUNDWATER FIELD DATA AND INVESTIGATION RESULTS 4. GROUNDWATER FIELD DATA AND INVESTIGATION RESULTS The following section presents the groundwater field data and analytical results for the quarterly groundwater sampling events. 4.1 Groundwater Level Data The groundwater monitoring well network consists of shallow wells (screen intervals ranging between 1 and 15 feet bgs) and intermediate wells (screen intervals ranging from approximately 10 to 35 feet bgs). A zone of low permeable clay and silt layers separates the shallow and intermediate well aquifers. As shown in Table 4-1, measured groundwater depths in the shallow and intermediate monitoring wells ranged from approximately 1.59 to 5.86 feet below ground surface (bgs) and 1.7 to 6.23 feet bgs, respectively. The observed range of depths is generally consistent with previous investigation data showing similar levels and shallow groundwater depths across the site. Groundwater contour maps prepared from water levels measured in monitoring wells labeled shallow and intermediate are presented for each quarterly sampling event as Figures 4-1, 4-1a, 4-1b, 4-2, 4-2a, 4-2b, 4-3, 4-3a, 4-3b, 4-4, 4-4a, and 4-4b. Based on review of the groundwater contour maps, the following general findings were noted:  Historical groundwater “mounding” caused by water leaks from ATF2 previously created a component of flow to the north and northwest in the northern portions of the site (ERM 2014). Following repairs and re-lining of ATF2, and consistent with interpretations presented in the SCA2 Report (ERM 2019a), this component of flow no longer appeared to be present. However, as shown in Figures 4-4a through 4-4b, some localized mounding is observed to be occurring in groundwater on the northern side of ATF2. L3Harris is currently evaluating whether the size and depth of ATF2 can modify localized shallow groundwater flow direction, even during times when the facility has verified the integrity of ATF2 and there are no leaks.  The groundwater flow directions in both shallow and intermediate zones are similar and show an overall flow to the west, with some local variations across the site. 4.2 Groundwater Screening Levels Groundwater sample results were screened against the Utah Groundwater Quality Standards (UGWQSs). In instances where compounds do not have an established UGWQS, they were compared to the USEPA regional screening levels (RSLs) for tap water. 4.3 Groundwater Sample Analytical Results Groundwater samples were collected from existing wells. Groundwater samples were analyzed for VOCs in accordance with the project Work Plan. The following subsections discuss the presentation of the groundwater sample analytical data and provide a discussion of the VOC analytical results. This discussion includes a general summary of the VOC results and a discussion of the results for 1,4-dioxane (Section 4.3.4). 1,4-dioxane was analyzed at the request of the UDEQ during the March 2018 sampling event and has been included in the ongoing groundwater monitoring program. In the May 2022 sampling event, groundwater samples from MW-9i, MW-14i, AND MW-19i were analyzed for microbial activity and the following geochemical parameters: dissolved gasses (ethene, ethane, acetylene, butane, propane, isobutylene, and methane), sulfate, total dissolved iron and manganese, and total organic carbon. QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page 10 GROUNDWATER FIELD DATA AND INVESTIGATION RESULTS 4.3.1 Groundwater Analytical Summary Tables VOC analytical results for shallow and intermediate monitoring well locations are presented in Tables 4-2 and 4-3, respectively. Prior monitoring well groundwater sample results collected during the SCA investigation in 2014, SCA 2, and the October 2019 through July 2020 annual sampling events are also included in Tables 4-2 and 4-3 for comparison purposes. Groundwater sample analytical results that exceed the UGWQS or USEPA RSLs for tap water are shaded in gray. For simplicity, these tables include detected compounds only. The complete laboratory reports are attached as Appendix C of this report. 4.3.2 Shallow Monitoring Well Groundwater VOC Analytical Results VOCs were detected in groundwater samples from 13 of the 18 monitoring wells in the shallow zone during this quarterly groundwater monitoring reporting period (see Table 4-2 and Figures 5-4a and b). Of the groundwater samples from the 13 wells where VOCs were detected, 12 samples had reported concentrations for one or more VOCs that exceed the UGWQSs or USEPA RSLs. Locations where exceedances were observed include wells B-1, MW-4, MW-6, MW-8, MW-9, MW-10, MW-11, MW-12, MW-13, MW-14, MW-15, and MW-16. Consistent with previous data, these detections of VOCs are primarily within or around the immediate periphery west, north, and east of Building 1. Other wells, particularly those located southwest, southeast, and northeast of Building 1 showed concentrations below the applicable screening levels, which is consistent with historical data. A comparison of current results with the data collected from the shallow zone during the October 2019 through July 2020 quarterly sampling events, confirms that the VOCs detected include PCE and associated natural reductive dechlorination degradation compounds at similar concentrations (same order of magnitude). Shallow Groundwater Analytical Results for the chlorinated constituents of concern are displayed on Figures 5-1a through 5-4a. 4.3.3 Intermediate Groundwater VOC Analytical Results VOCs were detected in groundwater samples collected from 13 of the 17 groundwater monitoring wells during this quarterly groundwater monitoring reporting period. It is noted that the intermediate wells installed during the SCA and SCA2 were installed at depth of approximately 20 to 25 feet bgs to target the upper portion of the intermediate zone (the shallow intermediate zone). The VOCs detected in the groundwater samples include PCE and associated natural reductive dechlorination degradation compounds. Four intermediate monitoring wells located west or southeast of Building 1 exhibited VOC concentration below the UGWQSs or tap water RSLs (MW-2I, MW-5I, MW-7I, and MW-11I). A comparison of current results with the data collected from the intermediate zone during the October 2019 through July 2020 quarterly sampling events, confirms that the VOCs detected and their concentrations are consistent with historical data. Intermediate Groundwater Analytical Results for the chlorinated constituents of concern are displayed on Figures 5-1b through 5-4b. 4.3.4 Discussion of 1,4-Dioxane Analytical Results The compound 1,4-dioxane was detected in groundwater samples from 11 of the shallow monitoring wells (B-1, MW-4, MW-8, MW-9, MW-10, MW-11, MW-12, MW-13, MW-14, MW-15, and MW-16) and twelve of the intermediate monitoring wells (MW-4I, MW-6I, MW-9I, MW-10I, MW-12I, MW-13I, MW-14I, MW-15I, MW-17I, MW-18I, and MW-19I, MW-20I). During this reporting period, concentrations of 1,4-dioxane were observed to range from 0.531 micrograms per liter (µg/L) to 21.0 µg/L in the groundwater samples from the shallow wells and 0.634 µg/L to 43.8 µg/L in the intermediate wells. Reported concentrations of 1,4- dioxane exceed the USEPA RSL for tap water of 0.46 µg/L. Locations where 1,4-dioxane was detected QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page 11 GROUNDWATER FIELD DATA AND INVESTIGATION RESULTS over multiple quarters generally coincide with locations where VOCs were detected above site screening levels and consistent with historical data. 4.3.5 Biogeochemistry Analytical Results Methane was detected at concentrations of 55.4 µg/L (MW-9i), 90.6 µg/L (MW-14i), and 251 µg/L (MW- 19i). No other concentrations of dissolved gas were detected above the laboratory RLs. Reported concentrations of total iron in monitoring wells MW-9i, MW-14i, and MW-19i, were 129 µg/L, 222 µg/L, and 171 µg/L, respectively. Total manganese was detected at concentrations of 310 µg/L, 361 µg/L, and 289 µg/L in monitoring wells MW-9i, MW-14i, and MW-19i, respectively. Dissolved manganese was detected at concentrations of 214 µg/L (MW-9i), 312 µg/L MW-14i), and 271 µg/L (MW-19i). There were no detected concentrations of dissolved iron above the laboratory RLs. Sulfate was detected at concentrations of 347 milligrams per liter (mg/L) (MW-9i), 407 mg/L (MW-14i), 468 mg/L (MW-19i). Total organic carbon was detected at concentrations of 1.34 mg/L (MW-9i), 2.98. mg/L (MW-14i), and 3.52 mg/L (MW-19i). Concentrations of iron, manganese, sulfate, and total organic carbon do not exhibit a clear trend of increasing or decreasing concentration between upgradient and downgradient sample results. The geochemistry results are provided in the May 2022 sampling event laboratory report in Appendix C. 4.3.6 Discussion of Bio-Trap® Results Results of the Bio-Trap® sampling indicates very low to non-detectable Dehalococcoides Sp. (DHC) in the 3 sample locations (MW-9i, MW-14i, and MW-19i). No detectable TCEa or VC reductase enzymes were observed in the samples. A moderate range of Dehalobacter and Desulfitobacterium Sp., low to moderate range of Toluene di and mono oxygenase enzyme, and low to moderate range of phenol hydroxylase enzymes was observed. A high range of sulfate reducing bacteria was observed in all three samples. The Microbial Insights Bio-Trap® QuantArray®-Chlor Study Report is include in Appendix D. In general, and as further explained in Appendix D, the Bio-Trap® sampling results indicate a low rate of biodegradation. 4.3.7 Discussion of Mann-Kendall Trends The Mann-Kendall trend analysis was used to evaluate the statistical trends for the constituents of concern (COCs) in each monitoring well (1,1-DCA, 1,1-DCE, 1,2-DCA, 1,4-Dioxane, cis-1,2-DCE, trans- 1,2-DCE, TCE, PCE, and Vinyl Chloride). The eight data points from eight quarterly groundwater monitoring events from 2019–2022 were evaluated, and only the COCs that had four or more detections over the eight quarters of analysis were evaluated as a sufficient dataset. Trends were analyzed for each COC on a per-well basis. Of the monitoring wells that exhibited detections, 71 percent had a confidence factor high enough to show a decreasing, stable, or increasing trend. The remaining 29 percent of the evaluations showed “no trend”. The data identification scheme for the trend analysis was kept the same as tables 4-2 and 4-3. The Mann-Kendall analysis for each COC in each well is provided in Appendix E. To draw broader conclusions, the results for each COC were grouped into four categories of monitoring wells; shallow wells near the assumed source areas (e.g. MW-2A, MW-4, MW-6, MW-8, MW-13, MW-14, and MW-16), intermediate wells near the assumed source areas (e.g. MW-2i, MW-4i, MW-6i MW-13i, and MW-14i), shallow well trends along the site perimeter and downgradient (e.g. B-1, B-3, MW-3, MW-5, MW-7, MW-9, MW-10, MW-11, MW-12, and MW-15), and intermediate well trends along the site perimeter and downgradient (e.g. MW-3i, MW-5i, MW-7i, MW-9i, MW-10i, MW-11i, MW-12i, MW-15i, MW-17i, MW-18i, MW-19i, and MW-20i). The final results for each category, along with a site-wide cumulative result, are shown in Table 4-4. The site-wide final results for all COCs besides trans-1,2-DCE QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page 12 GROUNDWATER FIELD DATA AND INVESTIGATION RESULTS showed “probably not increasing” to “not increasing”. The results for trans-1,2-DCE were shown to be “undetermined.” QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page 13 QUALITY ASSURANCE/QUALITY CONTROL 5. QUALITY ASSURANCE/QUALITY CONTROL The laboratory data (Appendix C) associated with the quarterly groundwater monitoring program was validated in accordance with the general procedures outlined in the Quality Assurance Project Plan (QAPP) (AECOM 2011b). The Data Validation Reports (DVR) are included in Appendix F and explains data qualifiers added to the sample results as a result of the validation process. As fully described in section 5.5 and the DVR, only one data point was determined to be unusable. The rest of the data, including qualified data, can be used for decision-making purposes; however, the limitations indicated by the applied qualifiers should be considered when using the data. The quality of the data generated during this investigation is acceptable for the preparation of technically-defensible documents. 5.1 QAPP Variances Table 8-3 in the QAPP (AECOM 2011b) identifies results and analysis flags to be used to identify quality control (QC) outliers. As with the SCA and SCA2, these data flags were not used by ERM during the process of review and validation of project data. Instead ERM applied the accepted, national qualifiers as defined by the USEPA Contract Laboratory Program National Functional Guidelines for Organic Data Review, October 1999 (USEPA 1999) and USEPA Contract Laboratory Program National Functional Guidelines for Inorganic Data Review, October 2004 (USEPA 2004) to indicate project sample data that are affected by associated QC exceedances. As defined in the DVR, QA sample validation for the laboratory control samples and matrix spike samples were evaluated using the Eurofins laboratory National Environmental Laboratory Accreditation Program defined RPDs. The Field duplicate samples were evaluated with an RPD control limit of 30 when both the standard and duplicate samples were greater than or equal to five times the reporting limit, and ± two times the reporting limit for the calculated differences when at least one of the results was less than five times the RL. All RPDs used for the QA sample validation of this event’s data were lower than those identified in Table 7-2 in the QAPP (AECOM 2011b). No other variances to the QAPP were noted. 5.2 Quality Assurance/Quality Control Sample Results Per the QAPP, QA/QC samples that were collected include field duplicate samples, trip blank samples, and matrix spike/matrix spike duplicate (MS/MSD) samples. The results of these samples are discussed in the following sections. All duplicate, MS/MSD, and trip blank samples were analyzed in the same Eurofins Laboratory locations as their associated standard samples. 5.3 Field Duplicate Samples Duplicate groundwater samples were designated with an “-a” suffix. They were collected at the frequency of one per 10 primary samples. Field duplicate samples were collected with the following groundwater samples; July 2021: MW-9, MW-14I, and MW-20I; November 2021: MW-8 and MW-9I; February 2022: B- 1 and MW-8; May 2022: MW-8 and MW-18I. There was one instance where the difference between the primary and field duplicate sample results exceeded the established criteria defined in the DVR. This was associated with the detection of Vinyl Chloride in the duplicate sample collected from well MW-14I during the July 2021 sampling event; therefore, the reported Vinyl Chloride result in MW-14I has been qualified by a “J” qualifier in the analytical tables. QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page 14 QUALITY ASSURANCE/QUALITY CONTROL 5.4 Trip Blanks Trip blank samples, designated with a “-c” suffix, were submitted with each cooler containing an aqueous sample for the analysis of VOCs. Trip blank samples were non-detect for each of the target analytes for three of the four sampling events. In the July 2021 sampling event, 1,4-Dioxane was detected in the trip blank samples MW-5I-C and MW-8-C. The reported concentrations, 0.730 and 0.289 ug/L for MW-5I-C and MW-8-C respectively, did not exceed the blank reporting limit of 1.40 ug/L. The reported 1,4-Dioxane results for both the MW-5I-C and MW-8-C respective sample sets were qualified by a “U” qualifier when below the sample report limit and qualified by a “J+” qualifier when above the sample report limit (appendix F). 5.5 Matrix Spike/Matrix Spike Duplicate Samples Project specific MS/MSD samples were collected at a frequency of one per 17 primary samples. Project specific MS/MSD samples for groundwater samples were, July 2021: B-1 and MW-6; November 2021: MW-7 and MW-13; February 2022: MW-15I and MW-18I; May 2022: MW-13 and MW-14. Results of the MS/MSD samples are summarized and evaluated in the DVR in Appendix F. In the February 2022 event data validation, the acetone result in parent samples B-1 and B-1-a was qualified as a non-detected estimate (UJ) due to the zero percent MS/MSD recoveries. The non-detect acetone result was not rejected as it was in agreement with historical results for well B-1. The 1,4- Dioxane by 8260D result for well MW-15I was rejected due to the analyte was not being detected in either of the MS or MSD samples that were collected. As stated in the DVR, “Impact to the overall project is minimal as 1,4-dioxane was also reported by method 8260D-SIM for this sample with passing laboratory quality control recoveries.” In the May 2022 event data validation, the cis-1,2-DCE result for parent sample MW-13 was qualified as an estimate with a low basis (J-) due to MS/MSD recoveries below the laboratory control limits. The 1,4- dioxane result for MW-13 was greater than the laboratory limit and qualified as an estimate with no bias (J). All other MS/MSD recoveries and RPDs were within the project and laboratory limits of acceptance. QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page 15 CONCLUSIONS 6. CONCLUSIONS Since 2014, 21 shallow and intermediate zone groundwater monitoring wells have been installed and sampled at intervals. Most recently, 14 new wells were installed in the spring of 2018 per the UDEQ– approved Work Plan, bringing the total number of monitoring wells to 35. These 14 new wells were included in the groundwater monitoring program and sampled quarterly beginning in October 2019 through May 2022, resulting in a total of eight sampling events. The current reporting period includes four quarters of sampling from July 2021 to May 2022. The groundwater samples were analyzed for the VOC constituents of concerns (including 1,4 dioxane beginning in March 2018 per the request of UDEQ). During the May 2022 sampling event, additional analyses were performed at several well locations to evaluate reductive dechlorination and the degradation mechanisms associated with natural attenuation. These additional analyses included total and dissolved metals, dissolved gasses, sulfate, total organic carbon, and numerical evaluation of key micro-organisms using the Microbial Insights Bio-Trap®- QuantArray-Chlor. Findings from these activities and resulting data are summarized below:  VOCs continue to be present in shallow and intermediate groundwater primarily to the north and northwest of Building 1.  The occurrence of detectable COCs in shallow groundwater north of the site indicates migration of COCs in a direction that is different from the regional and historical site groundwater data that suggests a general groundwater flow direction to the west. The presence of VOCs to the north is thought to have been influenced by historical groundwater leaks from ATF2.  Groundwater level monitoring data indicates that the mounding that was historically observed around ATF2 and was subsequently addressed by the facility has again been observed in the shallow and intermediate aquifers to a lesser extent during the most recent sampling event. Groundwater flow data from the quarterly monitoring events for the remainder of this reporting period are consistent with historical findings that groundwater beneath the site generally flows westward with minor variations.  The laboratory results for groundwater samples collected during this quarterly groundwater monitoring period indicate that the primary constituents in the groundwater beneath the site are PCE and natural reductive dechlorination degradation compounds.  The compound 1,4-dioxane continues to be present in the groundwater beneath the site.  Varying VOC concentrations in groundwater have been observed in some monitoring wells when comparing monitoring data before and after the ATF2 liner replacement that was completed in 2015.  Groundwater samples collected over the last eight quarters have established a valid baseline for assessing trends in VOC concentrations in groundwater. As indicated by the Mann-Kendall analysis, all constituents near the source area are decreasing or stable in concentrations of site VOCs except cis-1,2-DCE in MW-4 and MW-16. Shallow wells outside of the source area exhibited statistically decreasing or stable trends for 3 of 4 wells evaluated. MW-12 exhibited a statically increasing trend for trans-1,2-DCE and vinyl chloride.  Mann-Kendall analysis of VOC concentrations in the source area intermediate wells indicated that all constituents are either decreasing or stable except trans-1,2-DCE in MW-13i which exhibited a probably increasing trend. All 7 intermediate wells outside the source area exhibited stable, probably decreasing, or decreasing trends of VOC concentrations.  Geochemical analysis confirmed that methane is present in groundwater, at concentrations ranging from 55 to 251 µg/L, indicating that reductive dechlorination generating methane is occurring at the site. No other concentrations of dissolved gases were detected above the laboratory RLs. QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page 16 CONCLUSIONS Concentrations of total and dissolved iron, total and dissolved manganese, and sulfate were also similar across the site.  Microbial data gained from the analysis of the Bio-Traps® indicates potential for degradation of parent chlorinated compounds; however, lack of DHC species indicates the potential for degradation of cis-1,2-DCE and/or VC to be limited. Mono and di oxygenase enzymes indicate potential for cometabolic degradation, as is commonly observed at sites that have mixed hydrocarbon and chlorinated solvent impacts. QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.1 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 (Revised 26 April 2024) Page 17 RECOMMENDATIONS 7. RECOMMENDATIONS Based on the conclusions provided in Section 6, and the stability of groundwater concentrations, ERM will continue to statistically evaluate the monitoring results. ERM recommends semiannual groundwater monitoring to evaluate potential offsite migration of contamination. An annual groundwater report will be submitted in the first quarter of 2025 summarizing results of the semiannual sampling events. Quarterly groundwater gauging data will be used to verify the elevation relationship between the ATF structure and the shallow groundwater table in order to verify whether there is any evidence of mounding that would prompt repair actions, or which could influence the direction of groundwater flow near the ATF2 tank. QUARTERLY GROUNDWATER MONITORING REPORT: JULY 2021–MAY 2022 L3Harris EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068 www.erm.com Version: 1.0 Project No.: 0600676 Client: L3Harris EDO Western Corp 16 September 2022 Page 18 REFERENCES 8. REFERENCES AECOM. 2012. Site Characterization Report. EDO Western Corp. Acoustic Sensors Facility, South Salt Lake City, Utah. 19 December 2012. AECOM. 2011. Quality Assurance Project Plan (QAPP). 23 November 2011. ERM-West, Inc. (ERM). 2014. Site Characterization Addendum Report. EDO Western Corp. Acoustic Sensors Facility, South Salt Lake City, Utah. 2 July 2014. ERM. 2019a. Site Characterization Addendum 2 Report. EDO Western Corp. Acoustic Sensors Facility, South Salt Lake City, Utah. April 2019. ERM. 2019b. Groundwater Monitoring and Vapor Intrusion Assessment Work Plan. EDO Western Corp. Acoustic Sensors Facility, South Salt Lake City, Utah. August 2019. ERM. 2020. Quarterly Groundwater Monitoring Report: October 2019–July 2020. EDO Western Corporation Acoustic Sensors Facility South Salt Lake City, Utah VCP No. C068. December 2020. ERM. 2020a. Vapor Intrusion Assessment Report. EDO Western Corp. Acoustic Sensors Facility, South Salt Lake City, Utah. March 2020. ERM. 2021. Response to Department of Environmental Response and Remediation (DERR) Comments Letter. April 2021. ERM. 2022. Supplemental Vapor Intrusion Assessment Work Plan. Voluntary Cleanup Program Agreement C069. L3Harris EDO Western Corporation Site. 2645 South 300 West South Salt Lake City, Utah. February 2022. Utah Department of Environmental Quality. 2022. Acceptance Letter. Division of Environmental Response and Remediation. March 2022. United States Environmental Protection Agency (USEPA). 1999. Contract Laboratory Program National Functional Guidelines for Organic Data Review. October 1999. USEPA 2004. Contract Laboratory Program National Functional Guidelines for Inorganic Data Review. October 2004. TABLES Table 4-1 Groundwater Elevation Summary L3Harris EDO Western Corporation Salt Lake City, Utah Well Identification Northing (ft) Easting (ft)Top of Casing/Measuring Point Elevation (ft) Surficial Aquifer Well Type Date Measured Depth to Top of Screen (ft bgs) Depth to Bottom of Screen (ft bgs) Depth to Water (ft BTOC) Groundwater Elevation (ft) B-1 7,429,020.146 1,530,236.114 4246.16 Shallow 10/21/2019 4.00 14.00 5.31 4240.85 B-1 7,429,020.146 1,530,236.114 4246.16 Shallow 1/6/2020 4.00 14.00 5.05 4241.11 B-1 7,429,020.146 1,530,236.114 4246.16 Shallow 4/20/2020 4.00 14.00 5.10 4241.06 B-1 7,429,020.146 1,530,236.114 4246.16 Shallow 7/13/2020 4.00 14.00 5.35 4240.81 B-1 7,429,020.146 1,530,236.114 4246.16 Shallow 7/26/2021 4.00 14.00 5.20 4239.96 B-1 7,429,020.146 1,530,236.114 4246.16 Shallow 10/29/2021 4.00 14.00 4.34 4241.82 B-1 7,429,020.146 1,530,236.114 4246.16 Shallow 2/11/2022 4.00 14.00 5.20 4240.96 B-1 7,429,020.146 1,530,236.114 4246.16 Shallow 5/6/2022 4.00 14.00 4.67 4241.49 B-3 7,428,923.717 1,530,335.548 4246.56 Shallow 10/21/2019 4.00 14.00 5.70 4240.86 B-3 7,428,923.717 1,530,335.548 4246.56 Shallow 1/6/2020 4.00 14.00 5.41 4241.15 B-3 7,428,923.717 1,530,335.548 4246.56 Shallow 4/20/2020 4.00 14.00 5.52 4241.04 B-3 7,428,923.717 1,530,335.548 4246.56 Shallow 7/13/2020 4.00 14.00 5.75 4240.81 B-3 7,428,923.717 1,530,335.548 4246.56 Shallow 7/26/2021 4.00 14.00 5.64 4240.92 B-3 7,428,923.717 1,530,335.548 4246.56 Shallow 10/29/2021 4.00 14.00 4.65 4241.91 B-3 7,428,923.717 1,530,335.548 4246.56 Shallow 2/11/2022 4.00 14.00 5.55 4241.01 B-3 7,428,923.717 1,530,335.548 4246.56 Shallow 5/6/2022 4.00 14.00 4.99 4241.57 MW-2 7,428,776.576 1,529,722.494 4242.61 Shallow 10/21/2019 1.00 11.00 3.20 4239.41 MW-2 7,428,776.576 1,529,722.494 4242.61 Shallow 1/6/2020 1.00 11.00 3.00 4239.61 MW-2 7,428,776.576 1,529,722.494 4242.61 Shallow 4/20/2020 1.00 11.00 3.02 4239.59 MW-2 7,428,776.576 1,529,722.494 4242.61 Shallow 7/13/2020 1.00 11.00 3.22 4239.39 MW-2 7,428,776.576 1,529,722.494 4242.61 Shallow 7/26/2021 1.00 11.00 3.24 4239.37 MW-2 7,428,776.576 1,529,722.494 4242.61 Shallow 10/29/2021 1.00 11.00 2.64 4239.97 MW-2 7,428,776.576 1,529,722.494 4242.61 Shallow 2/11/2022 1.00 11.00 3.37 4239.24 MW-2 7,428,776.576 1,529,722.494 4242.61 Shallow 5/6/2022 1.00 11.00 2.74 4239.87 MW-2A 7,428,852.475 1,529,922.252 4243.91 Shallow 10/21/2019 1.50 12.00 3.63 4240.28 MW-2A 7,428,852.475 1,529,922.252 4243.91 Shallow 1/6/2020 1.50 12.00 3.15 4240.76 MW-2A 7,428,852.475 1,529,922.252 4243.91 Shallow 4/20/2020 1.50 12.00 3.38 4240.53 MW-2A 7,428,852.475 1,529,922.252 4243.91 Shallow 7/13/2020 1.50 12.00 3.57 4240.34 MW-2A 7,428,852.475 1,529,922.252 4243.91 Shallow 7/26/2021 1.50 12.00 2.75 4241.16 MW-2A 7,428,852.475 1,529,922.252 4243.91 Shallow 10/29/2021 1.50 12.00 2.63 4241.28 MW-2A 7,428,852.475 1,529,922.252 4243.91 Shallow 2/11/2022 1.50 12.00 3.42 4240.49 MW-2A 7,428,852.475 1,529,922.252 4243.91 Shallow 5/6/2022 1.50 12.00 2.98 4240.93 MW-2I 7,428,847.132 1,529,921.766 4243.86 Intermediate 10/21/2019 29.81 34.81 2.72 4241.14 MW-2I 7,428,847.132 1,529,921.766 4243.86 Intermediate 1/6/2020 29.81 34.81 3.11 4240.75 MW-2I 7,428,847.132 1,529,921.766 4243.86 Intermediate 4/20/2020 29.81 34.81 2.84 4241.02 MW-2I 7,428,847.132 1,529,921.766 4243.86 Intermediate 7/13/2020 29.81 34.81 3.42 4240.44 MW-2I 7,428,847.132 1,529,921.766 4243.86 Intermediate 7/26/2021 29.81 34.81 2.72 4241.14 MW-2I 7,428,847.132 1,529,921.766 4243.86 Intermediate 10/29/2021 29.81 34.81 2.60 4241.26 MW-2I 7,428,847.132 1,529,921.766 4243.86 Intermediate 2/11/2022 29.81 34.81 3.17 4240.69 MW-2I 7,428,847.132 1,529,921.766 4243.86 Intermediate 5/6/2022 29.81 34.81 2.69 4241.17 MW-3 7,428,612.784 1,530,137.442 4245.28 Shallow 10/21/2019 2.80 12.80 5.12 4240.16 MW-3 7,428,612.784 1,530,137.442 4245.28 Shallow 1/6/2020 2.80 12.80 4.81 4240.47 MW-3 7,428,612.784 1,530,137.442 4245.28 Shallow 4/20/2020 2.80 12.80 4.68 4240.60 ERM Page 1 of 7 EDO Western Corporation - 8/24/2022 Table 4-1 Groundwater Elevation Summary L3Harris EDO Western Corporation Salt Lake City, Utah Well Identification Northing (ft) Easting (ft)Top of Casing/Measuring Point Elevation (ft) Surficial Aquifer Well Type Date Measured Depth to Top of Screen (ft bgs) Depth to Bottom of Screen (ft bgs) Depth to Water (ft BTOC) Groundwater Elevation (ft) MW-3 7,428,612.784 1,530,137.442 4245.28 Shallow 7/13/2020 2.80 12.80 4.94 4240.34 MW-3 7,428,612.784 1,530,137.442 4245.28 Shallow 7/26/2021 2.80 12.80 4.99 4240.29 MW-3 7,428,612.784 1,530,137.442 4245.28 Shallow 10/29/2021 2.80 12.80 4.11 4241.17 MW-3 7,428,612.784 1,530,137.442 4245.28 Shallow 2/11/2022 2.80 12.80 4.91 4240.37 MW-3 7,428,612.784 1,530,137.442 4245.28 Shallow 5/6/2022 2.80 12.80 4.30 4240.98 MW-3I 7,428,641.620 1,530,129.087 4244.65 Intermediate 10/21/2019 29.83 34.83 3.75 4240.90 MW-3I 7,428,641.620 1,530,129.087 4244.65 Intermediate 1/6/2020 29.83 34.83 3.32 4241.33 MW-3I 7,428,641.620 1,530,129.087 4244.65 Intermediate 4/20/2020 29.83 34.83 3.28 4241.37 MW-3I 7,428,641.620 1,530,129.087 4244.65 Intermediate 7/13/2020 29.83 34.83 3.40 4241.25 MW-3I 7,428,641.620 1,530,129.087 4244.65 Intermediate 7/26/2021 29.83 34.83 3.53 4241.12 MW-3I 7,428,641.620 1,530,129.087 4244.65 Intermediate 11/2/2021 29.83 34.83 2.75 4241.90 MW-3I 7,428,641.620 1,530,129.087 4244.65 Intermediate 2/11/2022 29.83 34.83 3.15 4241.50 MW-3I 7,428,641.620 1,530,129.087 4244.65 Intermediate 5/6/2022 29.83 34.83 2.83 4241.82 MW-4 7,428,901.539 1,530,116.677 4244.59 Shallow 10/21/2019 2.50 17.25 3.82 4240.77 MW-4 7,428,901.539 1,530,116.677 4244.59 Shallow 1/6/2020 2.50 17.25 3.46 4241.13 MW-4 7,428,901.539 1,530,116.677 4244.59 Shallow 4/20/2020 2.50 17.25 3.45 4241.14 MW-4 7,428,901.539 1,530,116.677 4244.59 Shallow 7/13/2020 2.50 17.25 4.28 4240.31 MW-4 7,428,901.539 1,530,116.677 4244.59 Shallow 7/26/2021 2.50 17.25 3.20 4241.39 MW-4 7,428,901.539 1,530,116.677 4244.59 Shallow 10/29/2021 2.50 17.25 2.71 4241.88 MW-4 7,428,901.539 1,530,116.677 4244.59 Shallow 2/11/2022 2.50 17.25 3.64 4240.95 MW-4 7,428,901.539 1,530,116.677 4244.59 Shallow 5/6/2022 2.50 17.25 2.94 4241.65 MW-4I 7,428,909.513 1,530,116.937 4244.51 Intermediate 10/22/2019 29.70 34.70 3.09 4241.42 MW-4I 7,428,909.513 1,530,116.937 4244.51 Intermediate 1/6/2020 29.70 34.70 3.42 4241.09 MW-4I 7,428,909.513 1,530,116.937 4244.51 Intermediate 4/20/2020 29.70 34.70 3.11 4241.40 MW-4I 7,428,909.513 1,530,116.937 4244.51 Intermediate 7/13/2020 29.70 34.70 3.62 4240.89 MW-4I 7,428,909.513 1,530,116.937 4244.51 Intermediate 7/26/2021 29.70 34.70 3.11 4241.40 MW-4I 7,428,909.513 1,530,116.937 4244.51 Intermediate 10/29/2021 29.70 34.70 2.43 4242.08 MW-4I 7,428,909.513 1,530,116.937 4244.51 Intermediate 2/11/2022 29.70 34.70 3.39 4241.12 MW-4I 7,428,909.513 1,530,116.937 4244.51 Intermediate 5/6/2022 29.70 34.70 2.69 4241.82 MW-5 7,428,739.914 1,530,131.268 4244.69 Shallow 10/21/2019 4.97 14.99 4.42 4240.27 MW-5 7,428,739.914 1,530,131.268 4244.69 Shallow 1/6/2020 4.97 14.99 4.42 4240.27 MW-5 7,428,739.914 1,530,131.268 4244.69 Shallow 4/20/2020 4.97 14.99 4.00 4240.69 MW-5 7,428,739.914 1,530,131.268 4244.69 Shallow 7/13/2020 4.97 14.99 4.36 4240.33 MW-5 7,428,739.914 1,530,131.268 4244.69 Shallow 7/26/2021 4.97 14.99 4.00 4240.69 MW-5 7,428,739.914 1,530,131.268 4244.69 Shallow 10/29/2021 4.97 14.99 3.08 4241.61 MW-5 7,428,739.914 1,530,131.268 4244.69 Shallow 2/11/2022 4.97 14.99 3.88 4240.81 MW-5 7,428,739.914 1,530,131.268 4244.69 Shallow 5/6/2022 4.97 14.99 3.47 4241.22 MW-5I 7,428,732.166 1,530,130.520 4244.56 Intermediate 10/21/2019 29.78 34.78 3.01 4241.55 MW-5I 7,428,732.166 1,530,130.520 4244.56 Intermediate 1/6/2020 29.78 34.78 3.61 4240.95 MW-5I 7,428,732.166 1,530,130.520 4244.56 Intermediate 4/20/2020 29.78 34.78 3.41 4241.15 MW-5I 7,428,732.166 1,530,130.520 4244.56 Intermediate 7/13/2020 29.78 34.78 3.51 4241.05 MW-5I 7,428,732.166 1,530,130.520 4244.56 Intermediate 7/26/2021 29.78 34.78 3.62 4240.94 MW-5I 7,428,732.166 1,530,130.520 4244.56 Intermediate 10/29/2021 29.78 34.78 3.10 4241.46 ERM Page 2 of 7 EDO Western Corporation - 8/24/2022 Table 4-1 Groundwater Elevation Summary L3Harris EDO Western Corporation Salt Lake City, Utah Well Identification Northing (ft) Easting (ft)Top of Casing/Measuring Point Elevation (ft) Surficial Aquifer Well Type Date Measured Depth to Top of Screen (ft bgs) Depth to Bottom of Screen (ft bgs) Depth to Water (ft BTOC) Groundwater Elevation (ft) MW-5I 7,428,732.166 1,530,130.520 4244.56 Intermediate 2/11/2022 29.78 34.78 3.30 4241.26 MW-5I 7,428,732.166 1,530,130.520 4244.56 Intermediate 5/6/2022 29.78 34.78 3.73 4240.83 MW-6 7,428,923.826 1,530,004.268 4243.71 Shallow 10/21/2019 5.00 15.01 3.09 4240.62 MW-6 7,428,923.826 1,530,004.268 4243.71 Shallow 1/6/2020 5.00 15.01 2.94 4240.77 MW-6 7,428,923.826 1,530,004.268 4243.71 Shallow 4/20/2020 5.00 15.01 2.71 4241.00 MW-6 7,428,923.826 1,530,004.268 4243.71 Shallow 7/13/2020 5.00 15.01 3.20 4240.51 MW-6 7,428,923.826 1,530,004.268 4243.71 Shallow 7/26/2021 5.00 15.01 2.67 4241.04 MW-6 7,428,923.826 1,530,004.268 4243.71 Shallow 10/29/2021 5.00 15.01 1.77 4241.94 MW-6 7,428,923.826 1,530,004.268 4243.71 Shallow 2/11/2022 5.00 15.01 2.66 4241.05 MW-6 7,428,923.826 1,530,004.268 4243.71 Shallow 5/6/2022 5.00 15.01 2.03 4241.68 MW-6I 7,428,917.444 1,530,004.290 4244.43 Intermediate 10/21/2019 30.19 35.19 2.98 4241.45 MW-6I 7,428,917.444 1,530,004.290 4244.43 Intermediate 1/6/2020 30.19 35.19 4.55 4239.88 MW-6I 7,428,917.444 1,530,004.290 4244.43 Intermediate 4/20/2020 30.19 35.19 3.28 4241.15 MW-6I 7,428,917.444 1,530,004.290 4244.43 Intermediate 7/13/2020 30.19 35.19 3.84 4240.59 MW-6I 7,428,917.444 1,530,004.290 4244.43 Intermediate 7/26/2021 30.19 35.19 3.07 4241.36 MW-6I 7,428,917.444 1,530,004.290 4244.43 Intermediate 10/29/2021 30.19 35.19 2.75 4241.68 MW-6I 7,428,917.444 1,530,004.290 4244.43 Intermediate 2/11/2022 30.19 35.19 3.18 4241.25 MW-6I 7,428,917.444 1,530,004.290 4244.43 Intermediate 5/6/2022 30.19 35.19 2.77 4241.66 MW-7 7,429,137.675 1,529,667.646 4243.28 Shallow 10/21/2019 4.70 14.70 4.10 4239.18 MW-7 7,429,137.675 1,529,667.646 4243.28 Shallow 1/6/2020 4.70 14.70 3.99 4239.29 MW-7 7,429,137.675 1,529,667.646 4243.28 Shallow 4/20/2020 4.70 14.70 4.15 4239.13 MW-7 7,429,137.675 1,529,667.646 4243.28 Shallow 7/13/2020 4.70 14.70 4.71 4238.57 MW-7 7,429,137.675 1,529,667.646 4243.28 Shallow 7/26/2021 4.70 14.70 4.95 4238.33 MW-7 7,429,137.675 1,529,667.646 4243.28 Shallow 10/29/2021 4.70 14.70 3.80 4239.48 MW-7 7,429,137.675 1,529,667.646 4243.28 Shallow 2/11/2022 4.70 14.70 4.70 4238.58 MW-7 7,429,137.675 1,529,667.646 4243.28 Shallow 5/6/2022 4.70 14.70 4.03 4239.25 MW-7I 7,429,133.782 1,529,667.387 4243.30 Intermediate 10/21/2019 29.81 34.81 3.81 4239.49 MW-7I 7,429,133.782 1,529,667.387 4243.30 Intermediate 1/6/2020 29.81 34.81 3.32 4239.98 MW-7I 7,429,133.782 1,529,667.387 4243.30 Intermediate 4/20/2020 29.81 34.81 3.46 4239.84 MW-7I 7,429,133.782 1,529,667.387 4243.30 Intermediate 7/13/2020 29.81 34.81 3.85 4239.45 MW-7I 7,429,133.782 1,529,667.387 4243.30 Intermediate 7/26/2021 29.81 34.81 3.98 4239.32 MW-7I 7,429,133.782 1,529,667.387 4243.30 Intermediate 10/29/2021 29.81 34.81 3.59 4239.71 MW-7I 7,429,133.782 1,529,667.387 4243.30 Intermediate 2/11/2022 29.81 34.81 3.77 4239.53 MW-7I 7,429,133.782 1,529,667.387 4243.30 Intermediate 5/6/2022 29.81 34.81 3.39 4239.91 MW-8 7,428,980.207 1,530,107.891 4243.59 Shallow 10/21/2019 5.11 15.15 2.58 4241.01 MW-8 7,428,980.207 1,530,107.891 4243.59 Shallow 1/6/2020 5.11 15.15 2.50 4241.09 MW-8 7,428,980.207 1,530,107.891 4243.59 Shallow 4/20/2020 5.11 15.15 2.55 4241.04 MW-8 7,428,980.207 1,530,107.891 4243.59 Shallow 7/13/2020 5.11 15.15 2.83 4240.76 MW-8 7,428,980.207 1,530,107.891 4243.59 Shallow 7/29/2021 5.11 15.15 2.61 4240.98 MW-8 7,428,980.207 1,530,107.891 4243.59 Shallow 10/29/2021 5.11 15.15 1.59 4242.00 MW-8 7,428,980.207 1,530,107.891 4243.59 Shallow 2/11/2022 5.11 15.15 2.70 4240.89 MW-8 7,428,980.207 1,530,107.891 4243.59 Shallow 5/6/2022 5.11 15.15 1.97 4241.62 MW-9 7,429,004.628 1,529,672.058 4243.39 Shallow 10/21/2019 3.88 13.88 4.46 4238.93 ERM Page 3 of 7 EDO Western Corporation - 8/24/2022 Table 4-1 Groundwater Elevation Summary L3Harris EDO Western Corporation Salt Lake City, Utah Well Identification Northing (ft) Easting (ft)Top of Casing/Measuring Point Elevation (ft) Surficial Aquifer Well Type Date Measured Depth to Top of Screen (ft bgs) Depth to Bottom of Screen (ft bgs) Depth to Water (ft BTOC) Groundwater Elevation (ft) MW-9 7,429,004.628 1,529,672.058 4243.39 Shallow 1/6/2020 3.88 13.88 4.22 4239.17 MW-9 7,429,004.628 1,529,672.058 4243.39 Shallow 4/20/2020 3.88 13.88 4.27 4239.12 MW-9 7,429,004.628 1,529,672.058 4243.39 Shallow 7/13/2020 3.88 13.88 4.68 4238.71 MW-9 7,429,004.628 1,529,672.058 4243.39 Shallow 7/26/2021 3.88 13.88 4.90 4238.49 MW-9 7,429,004.628 1,529,672.058 4243.39 Shallow 10/29/2021 3.88 13.88 4.09 4239.30 MW-9 7,429,004.628 1,529,672.058 4243.39 Shallow 2/11/2022 3.88 13.88 4.72 4238.67 MW-9 7,429,004.628 1,529,672.058 4243.39 Shallow 5/6/2022 3.88 13.88 4.22 4239.17 MW-9I 7,429,008.386 1,529,671.920 4243.54 Intermediate 10/21/2019 20.32 25.32 4.63 4238.91 MW-9I 7,429,008.386 1,529,671.920 4243.54 Intermediate 1/6/2020 20.32 25.32 4.65 4238.89 MW-9I 7,429,008.386 1,529,671.920 4243.54 Intermediate 4/20/2020 20.32 25.32 4.35 4239.19 MW-9I 7,429,008.386 1,529,671.920 4243.54 Intermediate 7/13/2020 20.32 25.32 4.79 4238.75 MW-9I 7,429,008.386 1,529,671.920 4243.54 Intermediate 7/26/2021 20.32 25.32 5.03 4238.51 MW-9I 7,429,008.386 1,529,671.920 4243.54 Intermediate 10/29/2021 20.32 25.32 4.50 4239.04 MW-9I 7,429,008.386 1,529,671.920 4243.54 Intermediate 2/11/2022 20.32 25.32 4.64 4238.90 MW-9I 7,429,008.386 1,529,671.920 4243.54 Intermediate 5/6/2022 20.32 25.32 4.38 4239.16 MW-10 7,429,059.406 1,529,670.881 4243.55 Shallow 10/21/2019 3.18 13.18 4.65 4238.90 MW-10 7,429,059.406 1,529,670.881 4243.55 Shallow 1/6/2020 3.18 13.18 4.45 4239.10 MW-10 7,429,059.406 1,529,670.881 4243.55 Shallow 4/20/2020 3.18 13.18 4.53 4239.02 MW-10 7,429,059.406 1,529,670.881 4243.55 Shallow 7/13/2020 3.18 13.18 5.00 4238.55 MW-10 7,429,059.406 1,529,670.881 4243.55 Shallow 7/26/2021 3.18 13.18 5.23 4238.32 MW-10 7,429,059.406 1,529,670.881 4243.55 Shallow 10/29/2021 3.18 13.18 4.30 4239.25 MW-10 7,429,059.406 1,529,670.881 4243.55 Shallow 2/11/2022 3.18 13.18 4.99 4238.56 MW-10 7,429,059.406 1,529,670.881 4243.55 Shallow 5/6/2022 3.18 13.18 4.46 4239.09 MW-10I 7,429,064.042 1,529,670.977 4243.78 Intermediate 10/21/2019 20.00 25.00 4.95 4238.83 MW-10I 7,429,064.042 1,529,670.977 4243.78 Intermediate 1/6/2020 20.00 25.00 4.87 4238.91 MW-10I 7,429,064.042 1,529,670.977 4243.78 Intermediate 4/20/2020 20.00 25.00 4.73 4239.05 MW-10I 7,429,064.042 1,529,670.977 4243.78 Intermediate 7/13/2020 20.00 25.00 5.08 4238.70 MW-10I 7,429,064.042 1,529,670.977 4243.78 Intermediate 7/26/2021 20.00 25.00 5.54 4238.24 MW-10I 7,429,064.042 1,529,670.977 4243.78 Intermediate 10/29/2021 20.00 25.00 6.23 4237.55 MW-10I 7,429,064.042 1,529,670.977 4243.78 Intermediate 2/11/2022 20.00 25.00 4.75 4239.03 MW-10I 7,429,064.042 1,529,670.977 4243.78 Intermediate 5/6/2022 20.00 25.00 4.89 4238.89 MW-11 7,429,026.922 1,529,576.089 4242.59 Shallow 10/21/2019 4.76 14.76 4.38 4238.21 MW-11 7,429,026.922 1,529,576.089 4242.59 Shallow 1/6/2020 4.76 14.76 4.14 4238.45 MW-11 7,429,026.922 1,529,576.089 4242.59 Shallow 4/20/2020 4.76 14.76 4.09 4238.50 MW-11 7,429,026.922 1,529,576.089 4242.59 Shallow 7/13/2020 4.76 14.76 4.64 4237.95 MW-11 7,429,026.922 1,529,576.089 4242.59 Shallow 7/26/2021 4.76 14.76 5.30 4237.29 MW-11 7,429,026.922 1,529,576.089 4242.59 Shallow 10/29/2021 4.76 14.76 4.50 4238.09 MW-11 7,429,026.922 1,529,576.089 4242.59 Shallow 2/11/2022 4.76 14.76 4.64 4237.95 MW-11 7,429,026.922 1,529,576.089 4242.59 Shallow 5/6/2022 4.76 14.76 4.43 4238.16 MW-11I 7,429,030.888 1,529,576.081 4242.56 Intermediate 10/21/2019 20.00 25.00 3.86 4238.70 MW-11I 7,429,030.888 1,529,576.081 4242.56 Intermediate 1/6/2020 20.00 25.00 4.23 4238.33 MW-11I 7,429,030.888 1,529,576.081 4242.56 Intermediate 4/20/2020 20.00 25.00 4.32 4238.24 MW-11I 7,429,030.888 1,529,576.081 4242.56 Intermediate 7/13/2020 20.00 25.00 4.88 4237.68 ERM Page 4 of 7 EDO Western Corporation - 8/24/2022 Table 4-1 Groundwater Elevation Summary L3Harris EDO Western Corporation Salt Lake City, Utah Well Identification Northing (ft) Easting (ft)Top of Casing/Measuring Point Elevation (ft) Surficial Aquifer Well Type Date Measured Depth to Top of Screen (ft bgs) Depth to Bottom of Screen (ft bgs) Depth to Water (ft BTOC) Groundwater Elevation (ft) MW-11I 7,429,030.888 1,529,576.081 4242.56 Intermediate 7/26/2021 20.00 25.00 4.82 4237.74 MW-11I 7,429,030.888 1,529,576.081 4242.56 Intermediate 10/29/2021 20.00 25.00 4.53 4238.03 MW-11I 7,429,030.888 1,529,576.081 4242.56 Intermediate 2/11/2022 20.00 25.00 4.34 4238.22 MW-11I 7,429,030.888 1,529,576.081 4242.56 Intermediate 5/6/2022 20.00 25.00 4.70 4237.86 MW-12 7,429,181.263 1,529,899.437 4243.66 Shallow 10/21/2019 2.15 12.15 2.93 4240.73 MW-12 7,429,181.263 1,529,899.437 4243.66 Shallow 1/6/2020 2.15 12.15 2.92 4240.74 MW-12 7,429,181.263 1,529,899.437 4243.66 Shallow 4/20/2020 2.15 12.15 3.10 4240.56 MW-12 7,429,181.263 1,529,899.437 4243.66 Shallow 7/13/2020 2.15 12.15 3.49 4240.17 MW-12 7,429,181.263 1,529,899.437 4243.66 Shallow 7/26/2021 2.15 12.15 3.27 4240.39 MW-12 7,429,181.263 1,529,899.437 4243.66 Shallow 10/29/2021 2.15 12.15 1.60 4242.06 MW-12 7,429,181.263 1,529,899.437 4243.66 Shallow 2/16/2022 2.15 12.15 3.28 4240.38 MW-12 7,429,181.263 1,529,899.437 4243.66 Shallow 5/6/2022 2.15 12.15 2.30 4241.36 MW-12I 7,429,181.370 1,529,903.164 4243.86 Intermediate 10/21/2019 20.06 25.06 3.45 4240.41 MW-12I 7,429,181.370 1,529,903.164 4243.86 Intermediate 1/6/2020 20.06 25.06 2.54 4241.32 MW-12I 7,429,181.370 1,529,903.164 4243.86 Intermediate 4/20/2020 20.06 25.06 2.57 4241.29 MW-12I 7,429,181.370 1,529,903.164 4243.86 Intermediate 7/13/2020 20.06 25.06 3.66 4240.20 MW-12I 7,429,181.370 1,529,903.164 4243.86 Intermediate 7/28/2021 20.06 25.06 3.59 4240.27 MW-12I 7,429,181.370 1,529,903.164 4243.86 Intermediate 10/29/2021 20.06 25.06 2.57 4241.29 MW-12I 7,429,181.370 1,529,903.164 4243.86 Intermediate 2/16/2022 20.06 25.06 3.20 4240.66 MW-12I 7,429,181.370 1,529,903.164 4243.86 Intermediate 5/6/2022 20.06 25.06 NM NM MW-13 7,429,088.838 1,529,967.120 4246.49 Shallow 10/21/2019 2.62 12.62 5.54 4240.95 MW-13 7,429,088.838 1,529,967.120 4246.49 Shallow 1/6/2020 2.62 12.62 5.58 4240.91 MW-13 7,429,088.838 1,529,967.120 4246.49 Shallow 4/20/2020 2.62 12.62 5.72 4240.77 MW-13 7,429,088.838 1,529,967.120 4246.49 Shallow 7/13/2020 2.62 12.62 6.10 4240.39 MW-13 7,429,088.838 1,529,967.120 4246.49 Shallow 7/26/2021 2.62 12.62 5.84 4240.65 MW-13 7,429,088.838 1,529,967.120 4246.49 Shallow 10/29/2021 2.62 12.62 4.16 4242.33 MW-13 7,429,088.838 1,529,967.120 4246.49 Shallow 2/11/2022 2.62 12.62 5.86 4240.63 MW-13 7,429,088.838 1,529,967.120 4246.49 Shallow 5/6/2022 2.62 12.62 4.96 4241.53 MW-13I 7,429,088.617 1,529,971.504 4246.47 Intermediate 10/21/2019 19.85 24.85 4.70 4241.77 MW-13I 7,429,088.617 1,529,971.504 4246.47 Intermediate 1/6/2020 19.85 24.85 5.45 4241.02 MW-13I 7,429,088.617 1,529,971.504 4246.47 Intermediate 4/20/2020 19.85 24.85 5.56 4240.91 MW-13I 7,429,088.617 1,529,971.504 4246.47 Intermediate 7/13/2020 19.85 24.85 5.96 4240.51 MW-13I 7,429,088.617 1,529,971.504 4246.47 Intermediate 7/26/2021 19.85 24.85 6.00 4240.47 MW-13I 7,429,088.617 1,529,971.504 4246.47 Intermediate 10/29/2021 19.85 24.85 5.03 4241.44 MW-13I 7,429,088.617 1,529,971.504 4246.47 Intermediate 2/11/2022 19.85 24.85 5.82 4240.65 MW-13I 7,429,088.617 1,529,971.504 4246.47 Intermediate 5/6/2022 19.85 24.85 5.13 4241.34 MW-14 7,429,087.288 1,530,088.203 4244.64 Shallow 10/21/2019 2.55 12.55 3.63 4241.01 MW-14 7,429,087.288 1,530,088.203 4244.64 Shallow 1/6/2020 2.55 12.55 3.64 4241.00 MW-14 7,429,087.288 1,530,088.203 4244.64 Shallow 4/20/2020 2.55 12.55 3.75 4240.89 MW-14 7,429,087.288 1,530,088.203 4244.64 Shallow 7/13/2020 2.55 12.55 4.03 4240.61 MW-14 7,429,087.288 1,530,088.203 4244.64 Shallow 7/26/2021 2.55 12.55 3.84 4240.80 MW-14 7,429,087.288 1,530,088.203 4244.64 Shallow 10/29/2021 2.55 12.55 2.37 4242.27 MW-14 7,429,087.288 1,530,088.203 4244.64 Shallow 2/11/2022 2.55 12.55 3.85 4240.79 ERM Page 5 of 7 EDO Western Corporation - 8/24/2022 Table 4-1 Groundwater Elevation Summary L3Harris EDO Western Corporation Salt Lake City, Utah Well Identification Northing (ft) Easting (ft)Top of Casing/Measuring Point Elevation (ft) Surficial Aquifer Well Type Date Measured Depth to Top of Screen (ft bgs) Depth to Bottom of Screen (ft bgs) Depth to Water (ft BTOC) Groundwater Elevation (ft) MW-14 7,429,087.288 1,530,088.203 4244.64 Shallow 5/6/2022 2.55 12.55 3.05 4241.59 MW-14I 7,429,086.944 1,530,093.258 4244.80 Intermediate 10/21/2019 19.33 24.33 3.92 4240.88 MW-14I 7,429,086.944 1,530,093.258 4244.80 Intermediate 1/6/2020 19.33 24.33 3.80 4241.00 MW-14I 7,429,086.944 1,530,093.258 4244.80 Intermediate 4/20/2020 19.33 24.33 3.86 4240.94 MW-14I 7,429,086.944 1,530,093.258 4244.80 Intermediate 7/13/2020 19.33 24.33 4.06 4240.74 MW-14I 7,429,086.944 1,530,093.258 4244.80 Intermediate 7/26/2021 19.33 24.33 3.96 4240.84 MW-14I 7,429,086.944 1,530,093.258 4244.80 Intermediate 10/29/2021 19.33 24.33 2.88 4241.92 MW-14I 7,429,086.944 1,530,093.258 4244.80 Intermediate 2/11/2022 19.33 24.33 3.72 4241.08 MW-14I 7,429,086.944 1,530,093.258 4244.80 Intermediate 5/6/2022 19.33 24.33 3.40 4241.40 MW-15 7,429,156.386 1,530,051.150 4243.13 Shallow 10/21/2019 2.75 12.75 2.10 4241.03 MW-15 7,429,156.386 1,530,051.150 4243.13 Shallow 1/6/2020 2.75 12.75 2.15 4240.98 MW-15 7,429,156.386 1,530,051.150 4243.13 Shallow 4/20/2020 2.75 12.75 2.26 4240.87 MW-15 7,429,156.386 1,530,051.150 4243.13 Shallow 7/13/2020 2.75 12.75 2.60 4240.53 MW-15 7,429,156.386 1,530,051.150 4243.13 Shallow 7/26/2021 2.75 12.75 2.45 4240.68 MW-15 7,429,156.386 1,530,051.150 4243.13 Shallow 11/3/2021 2.75 12.75 1.67 4241.46 MW-15 7,429,156.386 1,530,051.150 4243.13 Shallow 2/11/2022 2.75 12.75 2.40 4240.73 MW-15 7,429,156.386 1,530,051.150 4243.13 Shallow 5/6/2022 2.75 12.75 1.60 4241.53 MW-15I 7,429,156.270 1,530,056.252 4243.27 Intermediate 10/21/2019 19.62 24.62 2.35 4240.92 MW-15I 7,429,156.270 1,530,056.252 4243.27 Intermediate 1/6/2020 19.62 24.62 2.24 4241.03 MW-15I 7,429,156.270 1,530,056.252 4243.27 Intermediate 4/20/2020 19.62 24.62 2.32 4240.95 MW-15I 7,429,156.270 1,530,056.252 4243.27 Intermediate 7/13/2020 19.62 24.62 2.72 4240.55 MW-15I 7,429,156.270 1,530,056.252 4243.27 Intermediate 7/26/2021 19.62 24.62 2.60 4240.67 MW-15I 7,429,156.270 1,530,056.252 4243.27 Intermediate 11/3/2021 19.62 24.62 1.70 4241.57 MW-15I 7,429,156.270 1,530,056.252 4243.27 Intermediate 2/11/2022 19.62 24.62 1.82 4241.45 MW-15I 7,429,156.270 1,530,056.252 4243.27 Intermediate 5/6/2022 19.62 24.62 2.70 4240.57 MW-16 7,428,996.780 1,529,780.089 4243.73 Shallow 10/21/2019 3.96 6.96 4.16 4239.57 MW-16 7,428,996.780 1,529,780.089 4243.73 Shallow 1/6/2020 3.96 6.96 3.85 4239.88 MW-16 7,428,996.780 1,529,780.089 4243.73 Shallow 4/20/2020 3.96 6.96 4.03 4239.70 MW-16 7,428,996.780 1,529,780.089 4243.73 Shallow 7/13/2020 3.96 6.96 4.20 4239.53 MW-16 7,428,996.780 1,529,780.089 4243.73 Shallow 7/26/2021 3.96 6.96 4.15 4239.58 MW-16 7,428,996.780 1,529,780.089 4243.73 Shallow 10/29/2021 3.96 6.96 3.30 4240.43 MW-16 7,428,996.780 1,529,780.089 4243.73 Shallow 2/11/2022 3.96 6.96 4.21 4239.52 MW-16 7,428,996.780 1,529,780.089 4243.73 Shallow 5/6/2022 3.96 6.96 3.71 4240.02 MW-17I 7,429,444.780 1,529,719.360 4242.78 Intermediate 10/21/2019 19.74 24.74 2.00 4240.78 MW-17I 7,429,444.780 1,529,719.360 4242.78 Intermediate 1/6/2020 19.74 24.74 2.82 4239.96 MW-17I 7,429,444.780 1,529,719.360 4242.78 Intermediate 4/20/2020 19.74 24.74 2.57 4240.21 MW-17I 7,429,444.780 1,529,719.360 4242.78 Intermediate 7/13/2020 19.74 24.74 3.16 4239.62 MW-17I 7,429,444.780 1,529,719.360 4242.78 Intermediate 7/26/2021 19.74 24.74 3.51 4239.27 MW-17I 7,429,444.780 1,529,719.360 4242.78 Intermediate 10/29/2021 19.74 24.74 2.70 4240.08 MW-17I 7,429,444.780 1,529,719.360 4242.78 Intermediate 2/11/2022 19.74 24.74 3.41 4239.37 MW-17I 7,429,444.780 1,529,719.360 4242.78 Intermediate 5/6/2022 19.74 24.74 2.89 4239.89 MW-18I 7,429,576.100 1,529,915.580 4243.35 Intermediate 10/21/2019 19.50 24.50 3.19 4240.16 MW-18I 7,429,576.100 1,529,915.580 4243.35 Intermediate 1/6/2020 19.50 24.50 3.16 4240.19 ERM Page 6 of 7 EDO Western Corporation - 8/24/2022 Table 4-1 Groundwater Elevation Summary L3Harris EDO Western Corporation Salt Lake City, Utah Well Identification Northing (ft) Easting (ft)Top of Casing/Measuring Point Elevation (ft) Surficial Aquifer Well Type Date Measured Depth to Top of Screen (ft bgs) Depth to Bottom of Screen (ft bgs) Depth to Water (ft BTOC) Groundwater Elevation (ft) MW-18I 7,429,576.100 1,529,915.580 4243.35 Intermediate 4/20/2020 19.50 24.50 2.66 4240.69 MW-18I 7,429,576.100 1,529,915.580 4243.35 Intermediate 7/13/2020 19.50 24.50 3.72 4239.63 MW-18I 7,429,576.100 1,529,915.580 4243.35 Intermediate 7/29/2021 19.50 24.50 4.04 4239.31 MW-18I 7,429,576.100 1,529,915.580 4243.35 Intermediate 10/29/2021 19.50 24.50 2.97 4240.38 MW-18I 7,429,576.100 1,529,915.580 4243.35 Intermediate 2/11/2022 19.50 24.50 3.60 4239.75 MW-18I 7,429,576.100 1,529,915.580 4243.35 Intermediate 5/6/2022 19.50 24.50 3.00 4240.35 MW-19I 7,429,646.820 1,530,041.020 4,243.20 Intermediate 10/21/2019 20.00 25.00 3.10 4240.10 MW-19I 7,429,646.820 1,530,041.020 4,243.20 Intermediate 1/7/2020 20.00 25.00 2.75 4240.45 MW-19I 7,429,646.820 1,530,041.020 4,243.20 Intermediate 4/20/2020 20.00 25.00 2.85 4240.35 MW-19I 7,429,646.820 1,530,041.020 4,243.20 Intermediate 7/13/2020 20.00 25.00 3.20 4240.00 MW-19I 7,429,646.820 1,530,041.020 4,243.20 Intermediate 7/29/2021 20.00 25.00 3.97 4239.23 MW-19I 7,429,646.820 1,530,041.020 4,243.20 Intermediate 10/29/2021 20.00 25.00 2.12 4241.08 MW-19I 7,429,646.820 1,530,041.020 4,243.20 Intermediate 2/11/2022 20.00 25.00 3.39 4239.81 MW-19I 7,429,646.820 1,530,041.020 4,243.20 Intermediate 5/6/2022 20.00 25.00 2.52 4240.68 MW-20I 7,429,655.100 1,530,296.580 4244.34 Intermediate 10/21/2019 19.70 24.70 3.56 4240.78 MW-20I 7,429,655.100 1,530,296.580 4244.34 Intermediate 1/6/2020 19.70 24.70 3.33 4241.01 MW-20I 7,429,655.100 1,530,296.580 4244.34 Intermediate 4/20/2020 19.70 24.70 3.21 4241.13 MW-20I 7,429,655.100 1,530,296.580 4244.34 Intermediate 7/13/2020 19.70 24.70 4.00 4240.34 MW-20I 7,429,655.100 1,530,296.580 4244.34 Intermediate 7/26/2021 19.70 24.70 4.50 4239.84 MW-20I 7,429,655.100 1,530,296.580 4244.34 Intermediate 10/29/2021 19.70 24.70 2.49 4241.85 MW-20I 7,429,655.100 1,530,296.580 4244.34 Intermediate 2/11/2022 19.70 24.70 3.44 4240.90 MW-20I 7,429,655.100 1,530,296.580 4244.34 Intermediate 5/6/2022 19.70 24.70 3.08 4241.26 Notes: ft = feet ft BTOC = feet below top of casing NM = not measured Survey data based on the following datums 2. Vertical locations are referenced to the North American Vertical Datum of 1988 (NAVD 88). 1. Horizontal coordinates are referenced to the US State Plane Coordinate System (2011), Utah Central Zone (4302). ERM Page 7 of 7 EDO Western Corporation - 8/24/2022 Table 4-2 Shallow Groundwater Summary L3Harris EDO Western Corporation Salt Lake City, Utah 1,1,2-Trichloro-1,2,2- trifluoroethane (Freon 113)1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloroethane 1,2-Dichloroethene 1,4-Dioxane 4-Isopropyltoluene Acetone cis-1,2- Dichloroethene Tetrachloroethene Toluene trans-1,2- Dichloroethene Trichloroethene Vinyl chloride ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L ug/L 1000 2.8 28 0.17 NS 0.46 NS 1800 2.5 4.1 110 6.8 0.28 0.019 NS NS 7 5 NS NS NS NS 70 5 1000 100 5 2 Location ID Sample Data Sample Type Sample ID B-1 21 Apr 2014 N B-1:042114 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-1 21 Apr 2014 FD B-1:042114-A < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-1 05 Mar 2018 N B-1 < 3.00 1.14 < 1.00 < 1.00 2.33 2.39 < 1.00 11.6 2.33 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-1 22 Oct 2019 N B-1-102219 < 3.00 1.85 < 1.00 < 1.00 4.47 5.70 < 1.00 < 10.0 4.47 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-1 07 Jan 2020 N B-1-010720 < 3.00 2.42 < 1.00 1.10 5.56 6.15 < 1.00 < 10.0 5.56 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-1 07 Jan 2020 FD B-1-A-010720 < 3.00 2.40 < 1.00 1.12 5.57 6.78 < 1.00 < 10.0 5.57 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-1 21 Apr 2020 N B-1-042120 < 3.00 2.42 1.24 < 1.00 N/A 5.97 N/A < 10.0 5.14 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-1 14 Jul 2020 N B-1-071420 < 3.00 2.80 1.11 < 1.00 N/A 6.21 N/A < 10.0 5.48 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-1 27 Jul 2021 N B-1-072721 < 3.00 < 1.00 < 1.00 < 1.00 N/A 2.81 J+N/A < 10.0 1.87 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-1 02 Nov 2021 N B-1-110221 < 1.91 < 1.81 < 2.85 < 1.45 N/A 4.75 N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 B-1 15 Feb 2022 N B-1-021522 < 1.91 < 1.81 < 2.85 < 1.45 UJ N/A 7.68 N/A < 5.48 UJ 6.12 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 B-1 15 Feb 2022 FD B-1-A-021522 < 1.91 < 1.81 < 2.85 < 1.45 UJ N/A 7.96 N/A < 5.48 UJ 5.82 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 B-1 10 May 2022 N B-1-051022 < 0.263 3.57 2.00 1.60 N/A 7.00 N/A < 8.00 8.37 < 0.194 < 0.240 < 0.209 < 0.177 < 0.280 B-2 21 Apr 2014 N B-2:042114 < 3.00 2.98 1.28 1.13 3.43 N/A < 1.00 < 10.0 3.43 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-2 05 Mar 2018 N B-2 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-3 21 Apr 2014 N B-3:042114 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-3 05 Mar 2018 N B-3 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 18.1 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-3 21 Oct 2019 N B-3-102119 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-3 07 Jan 2020 N B-3-010720 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-3 21 Apr 2020 N B-3-042120 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-3 21 Apr 2020 FD B-3-A-042120 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-3 14 Jul 2020 N B-3-071420 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-3 27 Jul 2021 N B-3-072721 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 0.267 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 B-3 02 Nov 2021 N B-3-110221 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 B-3 15 Feb 2022 N B-3-021522 < 1.91 < 1.81 < 2.85 < 1.45 UJ N/A < 0.300 N/A < 5.48 UJ < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 B-3 10 May 2022 N B-3-051022 < 0.263 < 0.203 < 0.241 < 0.170 N/A < 0.267 N/A < 8.00 < 0.148 < 0.194 < 0.240 < 0.209 < 0.177 < 0.280 MW-10 18 Apr 2014 N MW-10:041814 < 12.0 < 4.00 < 4.00 < 4.00 151 N/A < 4.00 < 40.0 146 < 4.00 < 4.00 4.80 < 4.00 23.1 MW-10 13 Mar 2018 N MW-10 < 60.0 < 20.0 < 20.0 < 20.0 616 < 4.00 < 20.0 < 200 616 < 20.0 < 20.0 < 20.0 < 20.0 < 20.0 MW-10 24 Oct 2019 N MW-10-102419 < 12.0 < 4.00 < 4.00 < 4.00 405 2.11 < 4.00 < 40.0 391 < 4.00 < 4.00 13.9 < 4.00 < 4.00 MW-10 10 Jan 2020 N MW-10-011020 < 15.0 < 5.00 < 5.00 < 5.00 N/A 1.62 J N/A < 50.0 347 < 5.00 < 5.00 13.9 < 5.00 < 5.00 MW-10 24 Apr 2020 N MW-10-042420 < 12.0 < 4.00 4.36 < 4.00 N/A 1.42 N/A < 40.0 309 < 4.00 < 4.00 13.6 < 4.00 < 4.00 MW-10 17 Jul 2020 N MW-10-071720 < 6.00 3.00 4.56 < 2.00 N/A 1.81 N/A < 20.0 345 < 2.00 < 2.00 14.1 < 2.00 4.27 MW-10 12 Aug 2021 N MW-10-081221 < 15.0 < 5.00 6.18 < 5.00 N/A 2.11 N/A < 50.0 434 < 5.00 < 5.00 13.8 < 5.00 < 5.00 MW-10 03 Nov 2021 N MW-10-110321 < 1.91 < 1.81 5.08 < 1.45 N/A 1.36 N/A < 5.48 406 J < 2.00 < 1.69 12.2 < 1.50 < 3.67 MW-10 17 Feb 2022 N MW-10-021722 < 1.91 UJ < 1.81 < 2.85 < 1.45 N/A 1.92 N/A < 5.48 317 < 2.00 < 1.69 10.3 < 1.50 < 3.67 MW-10 12 May 2022 N MW-10-051222 < 0.526 2.88 3.92 < 0.340 N/A 0.861 j N/A < 16.0 284 < 0.388 < 0.480 9.76 < 0.354 2.37 MW-11 22 Apr 2014 N MW-11:042214 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 N/A 4.38 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-11 07 Mar 2018 N MW-11 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 11.3 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-11 22 Oct 2019 N MW-11-102219 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-11 22 Oct 2019 FD MW-11-A-102219 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-11 07 Jan 2020 N MW-11-010720 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-11 22 Apr 2020 N MW-11-042220 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-11 14 Jul 2020 N MW-11-071420 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-11 29 Jul 2021 N MW-11-072921 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 0.267 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-11 02 Nov 2021 N MW-11-110221 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-11 15 Feb 2022 N MW-11-021522 < 1.91 < 1.81 < 2.85 < 1.45 N/A 0.833 J N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-11 09 May 2022 N MW-11-050922 < 0.263 < 0.203 < 0.241 < 0.170 N/A < 0.267 N/A < 8.00 < 0.148 < 0.194 < 0.240 < 0.209 < 0.177 < 0.280 MW-12 17 Apr 2014 N MW-12:041714 < 3.00 1.36 < 1.00 < 1.00 36.1 N/A < 1.00 13.1 33.4 < 1.00 < 1.00 2.72 < 1.00 1.13 MW-12 17 Apr 2014 FD MW-12:041714-A < 3.00 1.27 < 1.00 < 1.00 34.0 N/A < 1.00 11.6 31.4 < 1.00 < 1.00 2.63 < 1.00 1.03 MW-12 09 Mar 2018 N MW-12 < 3.00 1.48 < 1.00 < 1.00 27.4 < 1.00 < 1.00 < 10.0 27.4 < 1.00 < 1.00 < 1.00 < 1.00 1.14 MW-12 24 Oct 2019 N MW-12-102419 < 3.00 1.50 < 1.00 < 1.00 23.6 < 1.40 < 1.00 < 10.0 23.6 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-12 09 Jan 2020 N MW-12-010920 < 3.00 1.41 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 22.2 < 1.00 < 1.00 < 1.00 < 1.00 1.54 MW-12 24 Apr 2020 N MW-12-042420 < 3.00 1.89 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 26.7 < 1.00 < 1.00 1.10 < 1.00 4.26 MW-12 16 Jul 2020 N MW-12-071620 < 3.00 2.51 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 40.1 < 1.00 < 1.00 1.62 < 1.00 7.63 MW-12 28 Jul 2021 N MW-12-072821 < 3.00 2.80 1.09 < 1.00 N/A 1.49 J+N/A < 10.0 56.2 < 1.00 < 1.00 2.41 < 1.00 2.94 MW-12 04 Nov 2021 N MW-12-110421 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 46.7 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-12 16 Feb 2022 N MW-12-021622 < 1.91 < 1.81 < 2.85 UJ < 1.45 N/A 1.26 N/A < 5.48 37.3 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-12 12 May 2022 N MW-12-051222 < 0.263 1.88 < 0.241 < 0.170 N/A < 0.267 N/A < 8.00 32.6 < 0.194 < 0.240 2.00 < 0.177 5.03 Analyte Unit EPA_RSL_TAP_2023NOVEMBER_THQ0.1 EPA_RSL_MCL_2023NOVEMBER_THQ0.1 MW-13 18 Apr 2014 N MW-13:041814 < 3.00 1.31 < 1.00 < 1.00 36.1 N/A < 1.00 < 10.0 35.9 3.26 < 1.00 < 1.00 16.5 1.48 MW-13 08 Mar 2018 N MW-13 < 30.0 13.0 < 10.0 < 10.0 306 3.57 < 10.0 < 100 306 < 10.0 < 10.0 < 10.0 14.4 < 10.0 MW-13 08 Mar 2018 FD MW-13-A < 30.0 13.4 < 10.0 < 10.0 321 3.23 < 10.0 < 100 321 < 10.0 < 10.0 < 10.0 15.6 < 10.0 MW-13 24 Oct 2019 N MW-13-102419 < 3.00 4.80 2.31 1.09 130 3.66 < 1.00 < 10.0 130 1.29 < 1.00 < 1.00 1.70 < 1.00 MW-13 08 Jan 2020 N MW-13-010820 < 3.00 7.52 3.92 1.67 216 4.40 < 1.00 < 10.0 232 < 1.00 < 1.00 < 1.00 1.41 < 1.00 MW-13 23 Apr 2020 N MW-13-042320 < 12.0 10.7 6.42 < 4.00 N/A 4.31 N/A < 40.0 306 < 4.00 < 4.00 < 4.00 < 4.00 < 4.00 MW-13 15 Jul 2020 N MW-13-071520 < 6.00 6.13 3.56 < 2.00 N/A 3.78 N/A < 20.0 177 < 2.00 < 2.00 < 2.00 < 2.00 2.41 MW-13 27 Jul 2021 N MW-13-072721 < 3.00 3.52 1.58 < 1.00 N/A 1.78 J+N/A < 10.0 104 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-13 04 Nov 2021 N MW-13-110421 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 12.5 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-13 16 Feb 2022 N MW-13-021622 < 1.91 < 1.81 < 2.85 UJ < 1.45 N/A 1.43 N/A < 5.48 UJ 93.9 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-13 11 May 2022 N MW-13-051122 < 0.263 2.76 1.21 < 0.170 UJ N/A 0.597 J N/A < 8.00 UJ 84.5 J-< 0.194 < 0.240 < 0.209 < 0.177 < 0.280 MW-14 17 Apr 2014 N MW-14:041714 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-14 08 Mar 2018 N MW-14 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-14 23 Oct 2019 N MW-14-102319 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-14 08 Jan 2020 N MW-14-010820 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-14 22 Apr 2020 N MW-14-042220 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-14 15 Jul 2020 N MW-14-071520 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-14 27 Jul 2021 N MW-14-072721 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 U N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-14 03 Nov 2021 N MW-14-110321 < 1.91 < 1.81 < 2.85 < 1.45 N/A 0.531 j N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-14 17 Feb 2022 N MW-14-021722 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-14 11 May 2022 N MW-14-051122 < 0.263 < 0.203 < 0.241 < 0.170 UJ N/A < 0.267 N/A < 8.00 UJ < 0.148 < 0.194 < 0.240 < 0.209 < 0.177 < 0.280 MW-15 17 Apr 2014 N MW-15:041714 < 15.0 5.49 < 5.00 < 5.00 135 N/A < 5.00 < 50.0 134 < 5.00 < 5.00 < 5.00 < 5.00 9.68 MW-15 08 Mar 2018 N MW-15 < 3.00 < 1.00 < 1.00 < 1.00 10.7 < 1.00 < 1.00 < 10.0 10.7 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-15 22 Oct 2019 N MW-15-102219 < 3.00 < 1.00 < 1.00 < 1.00 3.94 < 1.40 < 1.00 < 10.0 3.94 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-15 08 Jan 2020 N MW-15-010820 < 3.00 < 1.00 < 1.00 < 1.00 7.45 < 1.40 < 1.00 < 10.0 7.45 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-15 21 Apr 2020 N MW-15-042120 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 7.68 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-15 15 Jul 2020 N MW-15-071520 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 3.41 < 1.00 1.17 < 1.00 < 1.00 < 1.00 MW-15 28 Jul 2021 N MW-15-072821 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 U N/A < 10.0 15.4 < 1.00 < 1.00 < 1.00 < 1.00 2.34 MW-15 03 Nov 2021 N MW-15-110321 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 6.16 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-15 17 Feb 2022 N MW-15-021722 < 1.91 < 1.81 < 2.85 UJ < 1.45 N/A 0.825 J N/A < 5.48 8.43 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-15 10 May 2022 N MW-15-051022 < 0.263 < 0.203 < 0.241 < 0.170 N/A < 0.267 N/A < 8.00 3.14 < 0.194 < 0.240 < 0.209 < 0.177 < 0.280 MW-16 22 Apr 2014 N MW-16:042214 < 3.00 1.76 < 1.00 < 1.00 15.0 N/A < 1.00 < 10.0 14.6 < 1.00 < 1.00 < 1.00 < 1.00 5.49 MW-16 22 Apr 2014 FD MW-16:042214-A < 3.00 1.65 < 1.00 < 1.00 15.0 N/A < 1.00 < 10.0 14.7 < 1.00 < 1.00 < 1.00 < 1.00 5.46 MW-16 09 Mar 2018 N MW-16 < 3.00 2.50 < 1.00 < 1.00 32.3 1.11 < 1.00 < 10.0 32.3 < 1.00 < 1.00 < 1.00 < 1.00 3.51 MW-16 24 Oct 2019 N MW-16-102419 < 3.00 2.99 < 1.00 < 1.00 51.0 2.10 < 1.00 < 10.0 48.3 < 1.00 < 1.00 2.72 < 1.00 6.71 MW-16 24 Oct 2019 FD MW-16-A-102419 < 3.00 2.75 < 1.00 < 1.00 47.0 2.17 < 1.00 < 10.0 44.5 < 1.00 < 1.00 2.51 < 1.00 6.07 MW-16 09 Jan 2020 N MW-16-010920 < 3.00 2.64 < 1.00 < 1.00 N/A 1.88 N/A < 10.0 44.5 < 1.00 < 1.00 2.39 < 1.00 3.45 MW-16 23 Apr 2020 N MW-16-042320 < 3.00 3.37 < 1.00 < 1.00 N/A 2.48 N/A < 10.0 55.7 < 1.00 < 1.00 3.35 < 1.00 3.88 MW-16 16 Jul 2020 N MW-16-071620 < 3.00 3.66 < 1.00 < 1.00 N/A 2.90 N/A < 10.0 69.2 < 1.00 < 1.00 3.91 < 1.00 4.79 MW-16 28 Jul 2021 N MW-16-072821 < 3.00 2.42 < 1.00 < 1.00 N/A 2.54 J+N/A < 10.0 57.9 < 1.00 < 1.00 2.85 < 1.00 10.7 MW-16 04 Nov 2021 N MW-16-110421 < 1.91 < 1.81 < 2.85 < 1.45 N/A 2.23 N/A < 5.48 56.5 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-16 16 Feb 2022 N MW-16-021622 < 1.91 < 1.81 < 2.85 UJ < 1.45 N/A 2.77 N/A < 5.48 UJ 60.9 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-16 11 May 2022 N MW-16-051122 < 0.263 2.46 < 0.241 < 0.170 UJ N/A 1.39 j N/A < 8.00 UJ 57.8 < 0.194 < 0.240 2.89 < 0.177 2.99 MW-2 21 Apr 2014 FD MW-2:042114-A < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2 21 Apr 2014 N MW-2:042114 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2 08 Mar 2018 N MW-2 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2 23 Oct 2019 N MW-2-102319 < 3.00 < 1.00 < 1.00 < 1.00 1.06 4.05 < 1.00 < 10.0 1.06 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2 08 Jan 2020 N MW-2-010820 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2 21 Apr 2020 N MW-2-042120 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A 17.5 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2 14 Jul 2020 N MW-2-071420 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2 28 Jul 2021 N MW-2-072821 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 U N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2 02 Nov 2021 N MW-2-110221 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A 22.6 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-2 15 Feb 2022 N MW-2-021522 < 1.91 < 1.81 < 2.85 < 1.45 UJ N/A < 0.300 N/A < 5.48 UJ < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-2 09 May 2022 N MW-2-050922 < 0.263 < 0.203 < 0.241 < 0.170 N/A < 0.267 N/A < 8.00 < 0.148 < 0.194 < 0.240 < 0.209 < 0.177 < 0.280 MW-2A 06 Mar 2018 N MW-2A < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 11.6 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2A 22 Oct 2019 N MW-2A-102219 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2A 08 Jan 2020 N MW-2A-010820 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 32.1 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2A 21 Apr 2020 N MW-2A-042120 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2A 14 Jul 2020 N MW-2A-071420 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 1.23 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2A 14 Jul 2020 FD MW-2A-A-071420 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 1.23 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2A 27 Jul 2021 N MW-2A-072721 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 U N/A < 10.0 1.25 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-2A 02 Nov 2021 N MW-2A-110221 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-2A 15 Feb 2022 N MW-2A-021522 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-2A 10 May 2022 N MW-2A-051022 < 0.263 < 0.203 < 0.241 < 0.170 N/A < 0.267 N/A < 8.00 < 0.148 < 0.194 < 0.240 < 0.209 < 0.177 < 0.280 MW-3 18 Apr 2014 N MW-3:041814 4.67 < 1.00 < 1.00 < 1.00 1.42 N/A < 1.00 < 10.0 1.42 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-3 06 Mar 2018 N MW-3 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 10.1 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-3 23 Oct 2019 N MW-3-102319 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-3 09 Jan 2020 N MW-3-010920 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-3 22 Apr 2020 N MW-3-042220 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-3 15 Jul 2020 N MW-3-071520 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-3 15 Jul 2020 FD MW-3-A-071520 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-3 27 Jul 2021 N MW-3-072721 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 0.267 N/A < 10.0 1.09 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-3 02 Nov 2021 N MW-3-110221 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-3 15 Feb 2022 N MW-3-021522 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-3 10 May 2022 N MW-3-051022 < 0.263 < 0.203 < 0.241 < 0.170 N/A < 0.267 N/A < 8.00 1.30 < 0.194 < 0.240 < 0.209 < 0.177 < 0.280 MW-4 22 Apr 2014 N MW-4:042214 < 3.00 < 1.00 < 1.00 < 1.00 24.4 N/A < 1.00 < 10.0 24.4 < 1.00 < 1.00 < 1.00 < 1.00 3.25 MW-4 08 Mar 2018 N MW-4 < 3.00 1.23 < 1.00 < 1.00 5.87 1.51 < 1.00 < 10.0 5.87 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-4 23 Oct 2019 N MW-4-102319 < 3.00 < 1.00 < 1.00 < 1.00 4.42 < 1.40 < 1.00 < 10.0 4.42 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-4 09 Jan 2020 N MW-4-010920 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 3.06 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-4 22 Apr 2020 N MW-4-042220 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 3.15 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-4 15 Jul 2020 N MW-4-071520 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 3.68 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-4 28 Jul 2021 N MW-4-072821 < 3.00 8.74 2.89 1.76 N/A 6.82 N/A < 10.0 53.3 < 1.00 < 1.00 < 1.00 < 1.00 1.60 MW-4 04 Nov 2021 N MW-4-110421 < 1.91 < 1.81 < 2.85 < 1.45 N/A 2.76 N/A < 5.48 14.8 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-4 16 Feb 2022 N MW-4-021622 < 1.91 < 1.81 < 2.85 UJ < 1.45 N/A 2.17 N/A < 5.48 UJ 21.0 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-4 11 May 2022 N MW-4-051122 < 0.263 1.87 < 0.241 < 0.170 UJ N/A < 0.267 N/A < 8.00 UJ 18.8 < 0.194 < 0.240 < 0.209 < 0.177 < 0.280 MW-5 18 Apr 2014 N MW-5:041814 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-5 06 Mar 2018 N MW-5 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-5 06 Mar 2018 FD MW-5-A < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-5 22 Oct 2019 N MW-5-102219 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-5 07 Jan 2020 N MW-5-010720 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-5 21 Apr 2020 N MW-5-042120 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-5 21 Apr 2020 FD MW-5-A-042120 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-5 14 Jul 2020 N MW-5-071420 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-5 28 Jul 2021 N MW-5-072821 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 0.267 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-5 28 Jul 2021 FD MW-5A-072821 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 0.267 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-5 02 Nov 2021 N MW-5-110221 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-5 14 Feb 2022 N MW-5-021422 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-5 09 May 2022 N MW-5-050922 < 0.263 < 0.203 < 0.241 < 0.170 N/A < 0.267 N/A < 8.00 < 0.148 < 0.194 < 0.240 < 0.209 < 0.177 < 0.280 MW-6 21 Apr 2014 N MW-6:042114 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-6 07 Mar 2018 N MW-6 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-6 23 Oct 2019 N MW-6-102319 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-6 09 Jan 2020 N MW-6-010920 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-6 22 Apr 2020 N MW-6-042220 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-6 16 Jul 2020 N MW-6-071620 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-6 29 Jul 2021 N MW-6-072921 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 U N/A < 10.0 30.0 < 1.00 < 1.00 < 1.00 10.3 < 1.00 MW-6 04 Nov 2021 N MW-6-110421 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 16.7 < 2.00 < 1.69 < 2.54 6.20 < 3.67 MW-6 16 Feb 2022 N MW-6-021622 < 1.91 < 1.81 < 2.85 UJ < 1.45 N/A 0.379 J N/A < 5.48 UJ 11.7 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-6 11 May 2022 N MW-6-051122 < 0.263 1.01 < 0.241 < 0.170 UJ N/A < 0.267 N/A < 8.00 UJ 10.4 < 0.194 < 0.240 < 0.209 2.44 < 0.280 MW-7 21 Apr 2014 N MW-7:042114 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-7 13 Mar 2018 N MW-7 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-7 24 Oct 2019 N MW-7-102419 < 3.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 1.00 < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-7 10 Jan 2020 N MW-7-011020 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-7 23 Apr 2020 N MW-7-042320 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-7 17 Jul 2020 N MW-7-071720 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 MW-7 30 Jul 2021 N MW-7-073021 < 3.00 UJ < 1.00 UJ < 1.00 UJ < 1.00 UJ N/A < 1.40 UJ N/A < 10.0 UJ < 1.00 UJ < 1.00 UJ < 1.00 UJ < 1.00 UJ < 1.00 UJ < 1.00 UJ MW-7 03 Nov 2021 N MW-7-110321 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-7 15 Feb 2022 N MW-7-021522 < 1.91 < 1.81 < 2.85 < 1.45 N/A < 0.300 N/A < 5.48 < 1.57 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-7 10 May 2022 N MW-7-051022 < 0.263 < 0.203 < 0.241 < 0.170 N/A < 0.267 N/A < 8.00 < 0.148 < 0.194 < 0.240 < 0.209 < 0.177 < 0.280 MW-8 22 Apr 2014 N MW-8:042214 < 3.00 5.35 4.00 2.78 21.2 N/A < 1.00 < 10.0 21.1 < 1.00 < 1.00 < 1.00 < 1.00 7.46 MW-8 09 Mar 2018 N MW-8 < 300 537 < 100 < 100 2300 18.8 < 100 < 1000 2300 < 100 < 100 < 100 < 100 < 100 MW-8 24 Oct 2019 N MW-8-102419 < 15.0 89.8 20.1 13.0 822 11.0 < 5.00 < 50.0 815 < 5.00 < 5.00 7.06 31.6 127 MW-8 09 Jan 2020 N MW-8-010920 < 30.0 150 32.3 16.9 N/A 16.1 N/A < 100 729 18.9 < 10.0 < 10.0 40.5 35.8 MW-8 09 Jan 2020 FD MW-8-A-010920 < 30.0 160 34.4 19.0 N/A 16.0 N/A < 100 788 21.6 < 10.0 < 10.0 41.7 39.1 MW-8 22 Apr 2020 N MW-8-042220 < 60.0 323 83.0 38.8 N/A 24.4 N/A < 200 1840 47.8 < 20.0 < 20.0 89.5 62.1 MW-8 15 Jul 2020 N MW-8-071520 < 30.0 127 30.5 16.6 N/A 12.3 N/A < 100 703 < 10.0 < 10.0 < 10.0 38.1 40.8 MW-8 12 Aug 2021 N MW-8-081221 < 12.0 40.1 13.0 6.39 N/A 21.0 N/A < 40.0 267 34.1 < 4.00 < 4.00 162 31.4 MW-8 04 Nov 2021 N MW-8-110421 < 1.91 34.2 9.66 5.26 N/A 6.27 N/A < 5.48 245 < 2.00 < 1.69 < 2.54 73.3 13.9 MW-8 04 Nov 2021 FD MW-8-A-110421 < 1.91 32.6 9.39 5.02 N/A 6.28 N/A < 5.48 228 < 2.00 < 1.69 < 2.54 71.4 13.3 MW-8 16 Feb 2022 N MW-8-021622 < 1.91 13.6 < 2.85 UJ < 1.45 N/A 3.69 N/A < 5.48 UJ 88.0 < 2.00 < 1.69 < 2.54 11.9 < 3.67 MW-8 16 Feb 2022 FD MW-8-A-021622 < 1.91 14.6 < 2.85 UJ < 1.45 N/A 3.95 N/A < 5.48 UJ 87.1 < 2.00 < 1.69 < 2.54 12.9 < 3.67 MW-8 10 May 2022 N MW-8-051022 < 0.263 14.7 3.97 1.97 N/A 1.58 N/A < 8.00 59.2 < 0.194 < 0.240 < 0.209 7.75 4.44 MW-8 10 May 2022 FD MW-8-A-051022 < 0.263 14.6 3.97 2.00 N/A 1.57 N/A < 8.00 60.2 < 0.194 < 0.240 < 0.209 7.96 4.35 MW-9 18 Apr 2014 N MW-9:041814 < 12.0 < 4.00 < 4.00 < 4.00 172 N/A < 4.00 < 40.0 169 < 4.00 < 4.00 < 4.00 < 4.00 22.2 MW-9 09 Mar 2018 N MW-9 < 12.0 < 4.00 < 4.00 < 4.00 73.5 < 1.00 < 4.00 < 40.0 73.5 < 4.00 < 4.00 < 4.00 < 4.00 < 4.00 MW-9 24 Oct 2019 N MW-9-102419 < 3.00 < 1.00 1.14 1.52 142 < 1.40 < 1.00 < 10.0 139 < 1.00 < 1.00 2.99 < 1.00 9.26 MW-9 10 Jan 2020 N MW-9-011020 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 69.4 < 1.00 < 1.00 1.33 < 1.00 1.99 MW-9 23 Apr 2020 N MW-9-042320 < 6.00 2.34 < 2.00 < 2.00 N/A < 1.40 N/A < 20.0 160 < 2.00 < 2.00 4.75 < 2.00 8.61 MW-9 16 Jul 2020 N MW-9-071620 < 3.00 < 1.00 < 1.00 < 1.00 N/A < 1.40 N/A < 10.0 86.9 < 1.00 < 1.00 1.95 < 1.00 5.18 MW-9 16 Jul 2020 FD MW-9-A-071620 < 3.00 < 1.00 1.03 < 1.00 N/A < 1.40 N/A < 10.0 91.8 < 1.00 < 1.00 2.32 < 1.00 5.39 MW-9 30 Jul 2021 N MW-9-073021 < 15.0 < 5.00 < 5.00 < 5.00 N/A 1.73 N/A < 50.0 306 < 5.00 < 5.00 6.68 < 5.00 21.0 MW-9 30 Jul 2021 FD MW-9-A-073021 < 15.0 < 5.00 < 5.00 < 5.00 N/A < 1.40 U N/A < 50.0 317 < 5.00 < 5.00 5.30 < 5.00 17.7 MW-9 03 Nov 2021 N MW-9-110321 < 1.91 < 1.81 < 2.85 < 1.45 N/A 1.12 N/A < 5.48 251 J < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-9 15 Feb 2022 N MW-9-021522 < 1.91 < 1.81 < 2.85 < 1.45 N/A 1.26 N/A < 5.48 112 < 2.00 < 1.69 < 2.54 < 1.50 < 3.67 MW-9 11 May 2022 N MW-9-051122 < 0.263 1.36 < 0.241 < 0.170 UJ N/A < 0.267 N/A < 8.00 UJ 95.4 < 0.194 < 0.240 2.82 < 0.177 1.88 Notes: < = Compound not detected. Method detection limit shown. N/A = Not analyzed. NS = No standard. Units are in µg/L = micrograms per liter Bolded values indicate concentrations above the EPA RSL for tap water Shaded values indicate concentrations above EPA MCLs N = Normal Environmental Sample FD = Field Duplicate Sample SW8260B analyses performed by TestAmerica - Denver, CO of Denver. 8260B-SIM analyses performed by TestAmerica - Denver, CO of Denver. SW8260D analyses performed by TestAmerica - Pittsburg, PA of Pittsburgh. SW8260D_SIM analyses performed by TestAmerica - Pensacola, FL of Pensacola. SW8260B SIM analyses performed by TestAmerica - Denver, CO of Denver. EPA_RSL_TAP_2023NOVEMBER_THQ0.1 = https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables EPA_RSL_MCL_2023NOVEMBER_THQ0.1 = https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables J = Sample result qualified as estimated j = Sample result qualified as estimated J+ = Detected results are estimated with a high bias U = Nondetected, estimated detection limit UJ = Nondetected, estimated report limit Table 4-3 Intermediate Groundwater Summary L3Harris EDO Western Corporation Salt Lake City, Utah 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloroethane 1,2-Dichloroethene 1,4- Dioxane Chloroethane cis-1,2- Dichloroethene Tetrachloroethene trans-1,2- Dichloroethene trans-1,3- Dichloropropene Trichloroethene Vinyl chloride µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L 2.8 28 0.17 NS 0.46 830 3.6 4.1 6.8 NS 0.28 0.019 NS 7 5 NS NS NS 70 5 100 NS 5 2 Location ID Sample Date Sample Type Sample ID MW-2I 21-Apr-14 N MW-2I:042114 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-2I 06-Mar-18 N MW-2I < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-2I 22-Oct-19 N MW-2I-102219 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-2I 08-Jan-20 N MW-2I-010820 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-2I 21-Apr-20 N MW-2I-042120 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-2I 21-Apr-20 FD MW-2I-A-042120 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-2I 14-Jul-20 N MW-2I-071420 < 1.00 < 1.00 1.28 N/A < 1.40 < 2.00 1.13 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-2I 27-Jul-21 N MW-2I-072721 < 1.00 < 1.00 < 1.00 N/A < 1.40 U < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-2I 02-Nov-21 N MW-2I-110221 < 1.81 < 2.85 < 1.45 N/A < 0.300 < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-2I 15-Feb-22 N MW-2I-021522 < 1.81 < 2.85 < 1.45 J N/A < 0.300 < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 J < 1.50 < 3.67 MW-2I 10-May-22 N MW-2I-051022 < 0.203 < 0.241 1.02 N/A < 0.267 < 0.355 < 0.148 < 0.194 < 0.209 < 0.176 < 0.177 < 0.280 MW-3I 18-Apr-14 N MW-3I:041814 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-3I 06-Mar-18 N MW3I < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-3I 22-Oct-19 N MW-3I-102219 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-3I 22-Oct-19 FD MW-3I-A-102219 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-3I 07-Jan-20 N MW-3I-010720 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-3I 21-Apr-20 N MW-3I-042120 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-3I 14-Jul-20 N MW-3I-071420 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-3I 29-Jul-21 N MW-3I-072921 < 1.00 UJ < 1.00 UJ < 1.00 UJ N/A < 1.40 UJ < 2.00 UJ < 1.00 UJ < 1.00 UJ < 1.00 UJ < 3.00 UJ < 1.00 UJ < 1.00 UJ MW-3I 02-Nov-21 N MW-3I-110221 < 1.81 < 2.85 < 1.45 N/A < 0.300 < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-3I 15-Feb-22 N MW-3I-021522 < 1.81 < 2.85 < 1.45 N/A < 0.300 < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-3I 10-May-22 N MW-3I-051022 < 0.203 < 0.241 < 0.170 N/A < 0.267 < 0.355 < 0.148 < 0.194 < 0.209 < 0.176 < 0.177 < 0.280 MW-4I 22-Apr-14 N MW-4I:042214 4.86 < 1.00 < 1.00 < 1.00 N/A < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-4I 08-Mar-18 N MW-4I < 1.00 < 1.00 < 1.00 < 1.00 16.0 3.31 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-4I 23-Oct-19 N MW-4I-102319 < 1.00 < 1.00 < 1.00 < 1.00 20.7 3.27 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-4I 09-Jan-20 N MW-4I-010920 < 1.00 < 1.00 < 1.00 N/A 21.3 3.13 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-4I 22-Apr-20 N MW-4I-042220 < 1.00 < 1.00 < 1.00 N/A 19.8 5.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-4I 15-Jul-20 N MW-4I-071520 < 1.00 < 1.00 < 1.00 N/A 21.5 4.10 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-4I 28-Jul-21 N MW-4I-072821 < 1.00 < 1.00 < 1.00 N/A 20.4 2.12 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-4I 04-Nov-21 N MW-4I-110421 < 1.81 < 2.85 < 1.45 N/A 15.4 6.66 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-4I 16-Feb-22 N MW-4I-021622 < 1.81 < 2.85 J < 1.45 N/A 19.9 < 2.59 J < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-4I 11-May-22 N MW-4I-051122 < 0.203 < 0.241 < 0.170 UJ N/A 17.3 < 0.355 < 0.148 < 0.194 < 0.209 < 0.176 < 0.177 < 0.280 MW-5I 18-Apr-14 N MW-5I:041814 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-5I 06-Mar-18 N MW-5I < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-5I 22-Oct-19 N MW-5I-102219 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-5I 07-Jan-20 N MW-5I-010720 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-5I 21-Apr-20 N MW-5I-042120 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-5I 14-Jul-20 N MW-5I-071420 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-5I 28-Jul-21 N MW-5I-072821 < 1.00 < 1.00 < 1.00 N/A < 0.267 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-5I 02-Nov-21 N MW-5I-110221 < 1.81 < 2.85 < 1.45 N/A < 0.300 < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-5I 14-Feb-22 N MW-5I-021422 < 1.81 < 2.85 < 1.45 N/A < 0.300 < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-5I 09-May-22 N MW-5I-050922 < 0.203 < 0.241 < 0.170 N/A < 0.267 < 0.355 < 0.148 < 0.194 < 0.209 < 0.176 < 0.177 < 0.280 MW-6I 21-Apr-14 N MW-6I:042114 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-6I 07-Mar-18 N MW-6I < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-6I 23-Oct-19 N MW-6I-102319 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-6I 09-Jan-20 N MW-6I-010920 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-6I 22-Apr-20 N MW-6I-042220 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-6I 16-Jul-20 N MW-6I-071620 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-6I 29-Jul-21 N MW-6I-072921 < 1.00 UJ < 1.00 UJ < 1.00 UJ N/A < 1.40 UJ < 2.00 UJ < 1.00 UJ < 1.00 UJ < 1.00 UJ < 3.00 UJ < 1.00 UJ < 1.00 UJ MW-6I 04-Nov-21 N MW-6I-110421 < 1.81 < 2.85 < 1.45 N/A 0.818 j < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-6I 16-Feb-22 N MW-6I-021622 < 1.81 < 2.85 J < 1.45 N/A 0.988 j < 2.59 J < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-6I 11-May-22 N MW-6I-051122 < 0.203 < 0.241 < 0.170 UJ N/A < 0.267 < 0.355 < 0.148 < 0.194 < 0.209 < 0.176 < 0.177 < 0.280 MW-7I 21-Apr-14 N MW-7I:042114 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-7I 13-Mar-18 N MW-7I < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-7I 24-Oct-19 N MW-7I-102419 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-7I 10-Jan-20 N MW-7I-011020 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-7I 10-Jan-20 FD MW-7I-A-011020 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-7I 23-Apr-20 N MW-7I-042320 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-7I 17-Jul-20 N MW-7I-071720 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-7I 30-Jul-21 N MW-7I-073021 < 1.00 UJ < 1.00 UJ < 1.00 UJ N/A < 1.40 UJ < 2.00 UJ < 1.00 UJ < 1.00 UJ < 1.00 UJ < 3.00 UJ < 1.00 UJ < 1.00 UJ MW-7I 03-Nov-21 N MW-7I-110321 < 1.81 < 2.85 < 1.45 N/A < 0.300 < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-7I 15-Feb-22 N MW-7I-021522 < 1.81 < 2.85 < 1.45 N/A < 0.300 < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-7I 10-May-22 N MW-7I-051022 < 0.203 < 0.241 < 0.170 N/A < 0.267 < 0.355 < 0.148 < 0.194 < 0.209 < 0.176 < 0.177 < 0.280 MW-9I 18-Apr-14 N MW-9I:041814 < 100 < 100 < 100 1,580 N/A < 200 1,560 < 100 < 100 < 300 352 < 100 MW-9I 13-Mar-18 N MW-9I < 40.0 < 40.0 44.5 1,600 < 10.0 < 80.0 1,600 < 40.0 < 40.0 < 120 209 < 40.0 MW-9I 24-Oct-19 N MW-9I-102419 < 10.0 27.9 37.5 1,590 8.14 < 20.0 1,560 11.5 29.3 < 30.0 211 16.7 MW-9I 10-Jan-20 N MW-9I-011020 < 20.0 25.3 29.9 N/A 7.10 J < 40.0 1,290 < 20.0 < 20.0 < 60.0 152 < 20.0 MW-9I 23-Apr-20 N MW-9I-042320 < 20.0 25.4 27.7 N/A 6.82 < 40.0 1,220 < 20.0 < 20.0 < 60.0 144 < 20.0 MW-9I 16-Jul-20 N MW-9I-071620 < 10.0 27.6 34.6 N/A 7.57 < 20.0 1,420 18.5 28.9 < 30.0 233 23.6 MW-9I 30-Jul-21 N MW-9I-073021 3.86 J 30.5 J 32.5 J N/A 7.82 < 2.00 UJ 1,380 J 13.9 J 28.5 J < 3.00 UJ 212 J 17.5 J MW-9I 03-Nov-21 N MW-9I-110321 < 1.81 27.9 36.5 N/A 5.90 < 2.59 1,620 J 8.82 26.6 < 1.73 199 J 14.6 MW-9I 03-Nov-21 N MW-9I-110321-SPLIT 3.98 31.6 33.6 N/A 6.58 < 2 1,530 9.07 J 33.2 < 2 191 25 J Analyte Unit EPA_RSL_TAP_2022MAY_THQ0.1 SLCEDO_WG_UT_GWQS ERM Page 1 of 3 EDO Western Corporation - 8/24/2022 Table 4-3 Intermediate Groundwater Summary L3Harris EDO Western Corporation Salt Lake City, Utah 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloroethane 1,2-Dichloroethene 1,4- Dioxane Chloroethane cis-1,2- Dichloroethene Tetrachloroethene trans-1,2- Dichloroethene trans-1,3- Dichloropropene Trichloroethene Vinyl chloride µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L 2.8 28 0.17 NS 0.46 830 3.6 4.1 6.8 NS 0.28 0.019 NS 7 5 NS NS NS 70 5 100 NS 5 2 Location ID Sample Date Sample Type Sample ID Analyte Unit EPA_RSL_TAP_2022MAY_THQ0.1 SLCEDO_WG_UT_GWQS MW-9I 03-Nov-21 FD MW-9I-A-110321 < 1.81 20.8 37.1 N/A 5.58 < 2.59 1,690 J 9.31 28.7 < 1.73 212 J < 3.67 MW-9I 15-Feb-22 N MW-9I-021522 < 1.81 26.4 31.1 N/A 7.40 < 2.59 1,600 8.41 23.4 < 1.73 < 150 8.08 MW-9I 11-May-22 N MW-9I-051122 < 2.03 24.1 26.0 J N/A 5.84 < 3.55 1,360 < 1.94 24.2 < 1.76 130 < 2.80 MW-10I 18-Apr-14 N MW-10I:041814 < 40.0 < 40.0 < 40.0 1,210 N/A < 80.0 1,170 < 40.0 < 40.0 < 120 85.5 < 40.0 MW-10I 13-Mar-18 N MW-10I < 40.0 < 40.0 < 40.0 1,150 < 10.0 < 80.0 1,150 < 40.0 < 40.0 < 120 64.9 < 40.0 MW-10I 24-Oct-19 N MW-10I-102419 6.06 10.3 < 5.00 960 5.98 < 10.0 931 < 5.00 28.5 < 15.0 49.6 < 5.00 MW-10I 10-Jan-20 N MW-10I-011020 < 10.0 15.4 < 10.0 N/A 5.54 < 20.0 712 < 10.0 24.4 < 30.0 41.4 < 10.0 MW-10I 24-Apr-20 N MW-10I-042420 < 10.0 15.0 < 10.0 N/A 5.04 < 20.0 667 < 10.0 22.6 < 30.0 36.0 < 10.0 MW-10I 17-Jul-20 N MW-10I-071720 < 10.0 23.4 < 10.0 N/A 5.55 < 20.0 1,100 < 10.0 40.4 < 30.0 67.5 < 10.0 MW-10I 30-Jul-21 N MW-10I-073021 < 10.0 14.3 < 10.0 N/A 5.80 < 20.0 699 < 10.0 33.9 < 30.0 40.7 < 10.0 MW-10I 03-Nov-21 N MW-10I-110321 5.62 16.7 < 1.45 N/A 4.15 < 2.59 871 J < 2.00 30.3 < 1.73 65.8 J < 3.67 MW-10I 17-Feb-22 N MW-10I-021722 < 1.81 10.1 < 1.45 N/A 5.69 < 2.59 J 609 < 2.00 21.1 < 1.73 33.0 < 3.67 MW-10I 12-May-22 N MW-10I-051222 5.87 14.2 < 0.850 N/A 3.60 < 1.78 752 < 0.970 28.2 < 0.880 51.7 < 1.40 MW-11I 22-Apr-14 N MW-11I:042214 < 1.00 < 1.00 < 1.00 < 1.00 N/A < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-11I 22-Apr-14 FD MW-11I:042214-A < 1.00 < 1.00 < 1.00 < 1.00 N/A < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-11I 07-Mar-18 N MW-11I < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-11I 22-Oct-19 N MW-11I-102219 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-11I 07-Jan-20 N MW-11I-010720 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-11I 23-Apr-20 N MW-11I-042320 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-11I 14-Jul-20 N MW-11I-071420 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-11I 29-Jul-21 N MW-11I-072921 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-11I 02-Nov-21 N MW-11I-110221 < 1.81 < 2.85 < 1.45 N/A < 0.300 < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-11I 14-Feb-22 N MW-11I-021422 < 1.81 < 2.85 < 1.45 N/A < 0.300 < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-11I 09-May-22 N MW-11I-050922 < 0.203 < 0.241 < 0.170 N/A < 0.267 < 0.355 < 0.148 < 0.194 < 0.209 < 0.176 < 0.177 < 0.280 MW-12I 17-Apr-14 N MW-12I:041714 7.22 8.21 60.5 178 N/A < 10.0 175 5.40 < 5.00 < 15.0 103 12.4 MW-12I 09-Mar-18 N MW-12I < 10.0 < 10.0 69.7 260 4.39 J < 20.0 260 < 10.0 < 10.0 < 30.0 48.1 < 10.0 MW-12I 09-Mar-18 FD MW-12I-A < 10.0 10.2 71.5 272 7.94 J < 20.0 272 < 10.0 < 10.0 < 30.0 54.3 10.2 MW-12I 24-Oct-19 N MW-12I-102419 8.69 8.70 66.8 290 7.72 < 4.00 285 < 2.00 5.30 < 6.00 30.6 21.9 MW-12I 09-Jan-20 N MW-12I-010920 9.20 12.2 55.2 N/A 6.62 J < 10.0 275 < 5.00 < 5.00 < 15.0 40.7 8.41 MW-12I 24-Apr-20 N MW-12I-042420 12.5 17.0 78.7 N/A 6.02 < 8.00 365 < 4.00 5.80 < 12.0 54.1 4.86 MW-12I 24-Apr-20 FD MW-12I-A-042420 12.1 18.0 80.0 N/A 6.18 < 8.00 362 < 4.00 6.23 < 12.0 53.3 5.08 MW-12I 16-Jul-20 N MW-12I-071620 9.76 14.1 68.5 N/A 7.68 < 4.00 324 < 2.00 6.23 < 6.00 41.0 19.5 MW-12I 28-Jul-21 N MW-12I-072821 9.46 13.4 59.7 N/A 7.07 < 2.00 245 < 1.00 5.79 < 3.00 36.5 13.8 MW-12I 04-Nov-21 N MW-12I-110421 9.12 12.2 62.4 N/A 4.41 < 2.59 383 J < 2.00 6.51 < 1.73 36.6 < 3.67 MW-12I 16-Feb-22 N MW-12I-021622 < 1.81 12.8 58.7 N/A 6.30 < 2.59 339 < 2.00 5.13 < 1.73 31.0 6.81 MW-13I 18-Apr-14 N MW-13I:041814 15.9 5.92 < 4.00 57.6 N/A < 8.00 57.6 131 < 4.00 < 12.0 71.0 < 4.00 MW-13I 08-Mar-18 N MW-13I 16.4 7.17 7.20 152 3.11 < 10.0 138 48.4 13.9 < 15.0 114 < 5.00 MW-13I 24-Oct-19 N MW-13I-102419 18.1 7.62 7.36 166 6.99 < 2.00 157 80.7 8.68 < 3.00 160 < 1.00 MW-13I 08-Jan-20 N MW-13I-010820 15.4 6.83 5.88 135 5.06 < 2.00 129 52.6 5.76 < 3.00 124 < 1.00 MW-13I 08-Jan-20 FD MW-13I-A-010820 15.6 6.86 5.89 133 5.27 < 2.00 127 55.4 5.90 < 3.00 125 < 1.00 MW-13I 23-Apr-20 N MW-13I-042320 19.6 11.9 7.40 N/A 5.73 < 4.00 194 69.0 8.94 < 6.00 171 2.06 MW-13I 15-Jul-20 N MW-13I-071520 13.6 9.34 5.65 N/A 7.15 < 8.00 177 41.2 9.76 < 12.0 102 < 4.00 MW-13I 27-Jul-21 N MW-13I-072721 13.5 9.21 5.09 N/A 5.26 < 2.00 174 62.4 10.1 < 3.00 116 2.43 MW-13I 04-Nov-21 N MW-13I-110421 10.9 7.03 < 1.45 N/A 3.80 < 2.59 159 27.2 8.59 < 1.73 100 < 3.67 MW-13I 16-Feb-22 N MW-13I-021622 11.2 8.80 < 1.45 N/A 6.87 < 2.59 164 19.0 8.77 < 1.73 53.8 < 3.67 MW-13I 11-May-22 N MW-13I-051122 9.84 7.10 4.52 J N/A 3.95 < 0.355 161 18.4 16.4 < 0.176 53.9 1.25 MW-14I 17-Apr-14 N MW-14I:041714 170 46.1 < 40.0 509 N/A < 80.0 509 1,790 < 40.0 < 120 486 < 40.0 MW-14I 08-Mar-18 N MW-14I 65.7 23.6 < 20.0 429 20.4 < 40.0 429 71.0 < 20.0 < 60.0 327 < 20.0 MW-14I 23-Oct-19 N MW-14I-102319 49.5 20.4 7.86 465 29.0 < 10.0 465 < 5.00 < 5.00 < 15.0 < 5.00 38.5 MW-14I 08-Jan-20 N MW-14I-010820 50.4 18.3 7.63 441 26.4 J < 4.00 261 2.76 < 2.00 < 6.00 85.0 2.71 MW-14I 22-Apr-20 N MW-14I-042220 37.2 22.7 6.82 N/A 21.7 < 8.00 394 30.2 < 4.00 < 12.0 162 6.96 MW-14I 15-Jul-20 N MW-14I-071520 35.8 19.4 6.42 N/A 25.0 < 8.00 344 11.6 < 4.00 < 12.0 107 17.0 MW-14I 15-Jul-20 FD MW-14I-A-071520 36.5 20.2 6.69 N/A 26.2 < 8.00 355 10.5 < 4.00 < 12.0 106 18.3 MW-14I 27-Jul-21 N MW-14I-072721 43.0 21.3 8.04 N/A 25.5 < 2.00 285 36.0 3.61 < 3.00 144 17.6 J MW-14I 27-Jul-21 FD MW-14I-A-072721 39.8 20.1 7.82 N/A 26.3 < 8.00 318 40.0 < 4.00 < 12.0 139 15.3 J MW-14I 03-Nov-21 N MW-14I-110321 36.2 18.5 7.48 N/A 16.3 < 2.59 408 J 41.3 < 2.54 < 1.73 188 J 13.4 MW-14I 17-Feb-22 N MW-14I-021722 32.4 23.0 5.17 N/A 21.5 < 2.59 J 447 18.9 < 2.54 < 1.73 51.7 6.49 MW-14I 11-May-22 N MW-14I-051122 33.8 19.1 5.48 J N/A 16.5 < 0.710 449 J 14.1 3.51 < 0.352 76.6 8.33 MW-15I 17-Apr-14 N MW-15I:041714 89.5 40.5 12.2 293 N/A < 20.0 288 212 < 10.0 < 30.0 457 15.3 MW-15I 08-Mar-18 N MW-15I 23.1 22.0 < 20.0 492 8.40 < 40.0 492 < 20.0 < 20.0 < 60.0 109 41.6 MW-15I 22-Oct-19 N MW-15I-102219 18.4 17.3 < 5.00 483 11.3 < 10.0 476 9.76 6.79 < 15.0 89.7 50.5 MW-15I 08-Jan-20 N MW-15I-010820 18.0 17.9 2.31 375 11.3 < 4.00 373 8.36 2.11 < 6.00 90.3 2.40 MW-15I 21-Apr-20 N MW-15I-042120 16.8 19.9 < 4.00 N/A 13.9 < 8.00 367 < 4.00 < 4.00 < 12.0 35.9 20.1 MW-15I 15-Jul-20 N MW-15I-071520 15.5 19.8 < 4.00 N/A 11.8 < 8.00 344 J-14.3 4.86 < 12.0 78.9 29.6 MW-15I 28-Jul-21 N MW-15I-072821 25.8 26.8 3.39 N/A 16.4 < 4.00 367 21.6 6.93 < 6.00 192 15.5 MW-15I 03-Nov-21 N MW-15I-110321 < 1.81 < 2.85 < 1.45 N/A < 0.300 < 2.59 7.51 J+< 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-15I 17-Feb-22 N MW-15I-021722 < 1.81 < 2.85 < 1.45 N/A 2.34 < 2.59 J 36.3 < 2.00 < 2.54 < 1.73 < 1.50 12.6 J MW-15I 10-May-22 N MW-15I-051022 3.53 < 0.241 < 0.170 N/A 3.67 < 0.355 17.5 < 0.194 1.09 < 0.176 1.08 27.7 MW-17I 12-Mar-18 N MW-17I < 1.00 < 1.00 < 1.00 1.55 1.29 < 2.00 1.55 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-17I 23-Oct-19 N MW-17I-102319 < 1.00 < 1.00 < 1.00 < 1.00 2.90 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-17I 23-Oct-19 FD MW-17I-A-102319 < 1.00 < 1.00 < 1.00 < 1.00 2.10 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-17I 07-Jan-20 N MW-17I-010720 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 ERM Page 2 of 3 EDO Western Corporation - 8/24/2022 Table 4-3 Intermediate Groundwater Summary L3Harris EDO Western Corporation Salt Lake City, Utah 1,1-Dichloroethane 1,1-Dichloroethene 1,2-Dichloroethane 1,2-Dichloroethene 1,4- Dioxane Chloroethane cis-1,2- Dichloroethene Tetrachloroethene trans-1,2- Dichloroethene trans-1,3- Dichloropropene Trichloroethene Vinyl chloride µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L µg/L 2.8 28 0.17 NS 0.46 830 3.6 4.1 6.8 NS 0.28 0.019 NS 7 5 NS NS NS 70 5 100 NS 5 2 Location ID Sample Date Sample Type Sample ID Analyte Unit EPA_RSL_TAP_2022MAY_THQ0.1 SLCEDO_WG_UT_GWQS MW-17I 22-Apr-20 N MW-17I-042220 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-17I 16-Jul-20 N MW-17I-071620 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-17I 29-Jul-21 N MW-17I-072921 < 1.00 < 1.00 < 1.00 N/A < 1.40 U < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-17I 02-Nov-21 N MW-17I-110221 < 1.81 UJ < 2.85 UJ < 1.45 UJ N/A 1.28 < 2.59 UJ < 1.57 UJ < 2.00 UJ < 2.54 UJ < 1.73 UJ < 1.50 UJ < 3.67 UJ MW-17I 14-Feb-22 N MW-17I-021422 < 1.81 < 2.85 < 1.45 N/A 1.58 < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-17I 09-May-22 N MW-17I-050922 < 0.203 < 0.241 < 0.170 N/A 0.634 j < 0.355 < 0.148 < 0.194 < 0.209 < 0.176 < 0.177 < 0.280 MW-18I 12-Mar-18 N MW-18I 12.9 5.04 < 1.00 8.54 5.52 < 2.00 8.54 < 1.00 < 1.00 < 3.00 2.41 4.76 MW-18I 23-Oct-19 N MW-18I-102319 < 1.00 3.90 < 1.00 5.93 9.58 < 2.00 5.93 < 1.00 < 1.00 < 3.00 < 1.00 1.21 MW-18I 07-Jan-20 N MW-18I-010720 8.05 1.83 < 1.00 4.34 7.18 < 2.00 4.34 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-18I 23-Apr-20 N MW-18I-042320 12.7 4.69 < 1.00 N/A 7.89 < 2.00 6.22 < 1.00 < 1.00 < 3.00 < 1.00 2.16 MW-18I 17-Jul-20 N MW-18I-071720 13.5 4.93 < 1.00 N/A 9.07 < 2.00 7.22 < 1.00 < 1.00 < 3.00 1.10 5.56 MW-18I 29-Jul-21 N MW-18I-072921 12.1 3.93 < 1.00 N/A 8.09 < 2.00 5.02 < 1.00 < 1.00 < 3.00 < 1.00 5.47 MW-18I 04-Nov-21 N MW-18I-110421 11.7 < 2.85 < 1.45 N/A 6.26 < 2.59 7.07 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-18I 17-Feb-22 N MW-18I-021722 8.12 J < 2.85 < 1.45 N/A 6.68 < 2.59 J < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-18I 11-May-22 N MW-18I-051122 9.92 4.53 < 0.170 UJ N/A 6.12 < 0.355 6.88 < 0.194 < 0.209 < 0.176 1.37 3.48 MW-18I 11-May-22 FD MW-18I-A-051122 10.6 4.56 < 0.170 UJ N/A 6.07 < 0.355 6.94 < 0.194 < 0.209 < 0.176 1.28 3.36 MW-19I 12-Mar-18 N MW-19I 50.9 36.2 12.3 216 22.0 < 8.00 209 29.9 6.59 < 12.0 153 30.6 MW-19I 23-Oct-19 N MW-19I-102319 < 1.00 32.6 10.3 155 53.4 < 2.00 152 5.98 3.41 < 3.00 83.7 4.36 MW-19I 07-Jan-20 N MW-19I-010720 42.9 20.8 9.41 139 49.0 < 2.00 136 5.95 2.81 < 3.00 73.5 2.63 MW-19I 24-Apr-20 N MW-19I-042420 65.2 37.4 13.1 N/A 51.5 < 4.00 187 9.51 4.08 < 6.00 95.3 5.38 MW-19I 17-Jul-20 N MW-19I-071720 40.8 31.7 9.72 N/A 44.1 < 4.00 160 J-21.5 6.35 < 6.00 107 J-29.7 MW-19I 12-Aug-21 N MW-19I-081221 31.2 27.1 7.78 N/A 35.8 < 4.00 135 17.3 4.76 < 6.00 82.2 18.5 MW-19I 04-Nov-21 N MW-19I-110421 32.5 26.8 9.31 N/A 27.4 < 2.59 144 19.5 5.36 < 1.73 83.8 15.9 MW-19I 17-Feb-22 N MW-19I-021722 28.8 29.6 6.73 N/A 43.8 < 2.59 J 123 12.7 < 2.54 < 1.73 < 15.0 11.8 MW-19I 11-May-22 N MW-19I-051122 32.6 27.7 7.42 J N/A 31.0 < 0.355 157 13.7 4.47 < 0.176 69.0 12.3 MW-20I 12-Mar-18 N MW-20I < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-20I 12-Mar-18 FD MW-20I-A < 1.00 < 1.00 < 1.00 < 1.00 < 1.00 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-20I 23-Oct-19 N MW-20I-102319 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-20I 07-Jan-20 N MW-20I-010720 < 1.00 < 1.00 < 1.00 < 1.00 < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-20I 23-Apr-20 N MW-20I-042320 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-20I 16-Jul-20 N MW-20I-071620 < 1.00 < 1.00 < 1.00 N/A < 1.40 < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-20I 29-Jul-21 N MW-20I-072921 < 1.00 < 1.00 < 1.00 N/A < 1.40 U < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-20I 29-Jul-21 FD MW-20I-A-072921 < 1.00 < 1.00 < 1.00 N/A < 1.40 U < 2.00 < 1.00 < 1.00 < 1.00 < 3.00 < 1.00 < 1.00 MW-20I 03-Nov-21 N MW-20I-110321 < 1.81 < 2.85 < 1.45 N/A 0.402 J < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-20I 14-Feb-22 N MW-20I-021422 < 1.81 < 2.85 < 1.45 N/A 0.680 j < 2.59 < 1.57 < 2.00 < 2.54 < 1.73 < 1.50 < 3.67 MW-20I 10-May-22 N MW-20I-051022 < 0.203 < 0.241 < 0.170 N/A < 0.267 < 0.355 < 0.148 < 0.194 < 0.209 < 0.176 < 0.177 < 0.280 Notes: < = Compound not detected. Method detection limit shown. N/A = not analyzed NS = no standard Units are in µg/L = micrograms per liter Bolded values indicate concentrations above the EPA RSL for tap water. Shaded values indicate concentrations above the Utah groundwater quality standard. N = normal environmental sample FD = field duplicate sample SW8260B analyses performed by TestAmerica - Denver, CO of Denver. 8260B-SIM analyses performed by TestAmerica - Denver, CO of Denver. SW8260D analyses performed by TestAmerica - Pittsburg, PA of Pittsburgh. SW8260D_SIM analyses performed by TestAmerica - Pensacola, FL of Pensacola. SW8260B_SIM analyses performed by TestAmerica - Denver, CO of Denver. EPA_RSL_TAP_2017NOV_THQ0.1 = https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables-november-2017 SLCEDO_WG_UT_GWQS = Utah Groundwater Quality Standard J = sample result qualified as estimated j = sample result qualified as estimated J+ = detected results are estimated with a high bias J- = detected results are estimated with a low bias U = nondetected, estimated detection limit UJ = nondetected, estimated report limit ERM Page 3 of 3 EDO Western Corporation - 8/24/2022 Table 4-4 Mann-Kendall Analysis Results L3Harris EDO Western Corporation Salt Lake City, Utah Contaminant Category Category Result Site-Wide Final Result Source Area Shallow Not increasing Source Area Intermediate Not increasing Perimeter Shallow N/A Perimeter Intermediate Not increasing Source Area Shallow Not increasing Source Area Intermediate Not increasing Perimeter Shallow N/A Perimeter Intermediate Not increasing Source Area Shallow Not increasing Source Area Intermediate Not increasing Perimeter Shallow N/A Perimeter Intermediate Not increasing Source Area Shallow Not increasing Source Area Intermediate Not increasing Perimeter Shallow Not increasing Perimeter Intermediate Not increasing Source Area Shallow Undetermined Source Area Intermediate Not increasing Perimeter Shallow Not increasing Perimeter Intermediate Not increasing Source Area Shallow Not increasing Source Area Intermediate Not increasing Perimeter Shallow N/A Perimeter Intermediate Not increasing Source Area Shallow N/A Source Area Intermediate Not increasing Perimeter Shallow N/A Perimeter Intermediate Not increasing Source Area Shallow Not increasing Source Area Intermediate Not increasing Perimeter Shallow Undetermined Perimeter Intermediate Not increasing Source Area Shallow N/A Source Area Intermediate Increasing Perimeter Shallow Undetermined Perimeter Intermediate Not increasing Notes: N/A = no wells exhibited 4 or more detections over the 8-quarter sampling period, or no trend could be identified. PCE Not increasing Vinyl Chloride Probably not increasing trans-1,2-DCE Undetermined 1,4-Dioxane Not increasing cis-1,2-DCE Probably not increasing TCE Not increasing 1,1-DCA Not increasing 1,1-DCE Not increasing 1,2-DCA Not increasing ERM Page 1 of 1 FIGURES Ò> Ò> Ò>Ò> Ò>Ò> Ò>Ò> Ò>Ò>Ò>Ò> Ò>Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò>Ò> Ò>Ò> Ò>Ò> Ò>Ò> Ò> Ò>Ò> Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10I 4238.24 MW-11I 4237.74 MW-12I 4240.27 MW-13I 4240.47 MW-14I 4240.84 MW-15I 4240.67 MW-17I 4239.27 MW-18I 4239.31 MW-19I 4239.23 MW-20I 4239.84 MW-2I 4241.14 MW-3I 4241.12 MW-4I 4241.4 MW-5I 4240.94 MW-6I 4241.36 MW-7I 4239.32 MW-9I 4238.51 B-1 4239.96 B-3 4240.92 MW-10 4238.32 MW-12 4240.39 MW-13 4240.65 MW-14 4240.8 MW-15 4240.68 MW-16 4239.58 MW-2 4239.37 MW-2A 4241.16 MW-3 4240.29 MW-4 4241.39 MW-5 4240.69 MW-6 4241.04 MW-7 4238.33 MW-8 4240.98MW-9 4238.49 4240.0 42 3 7 . 4 4240.2 4240.4 4240 .6 4237.6 4240.4 4237.8 4238 . 0 4238. 2 42 3 8 . 4 42 3 8 . 6 42 3 8 . 8 42 3 9 . 0 4 2 4 1.2 42 3 9 . 2 4239.4 4239.6 4239.8 42 4 0 . 0 4 2 4 0 . 2 4 2 4 0.4 4240.6 4240.6 4241.0 4241.0 4240.8 4240.8 42 4 1 .0 4 2 3 7 . 8 42 3 8 . 0 423 8 . 2 4238.4 4238.6 4 2 3 8.8 4 2 3 9 . 0 4 2 3 9 . 2 4 2 4 1 .0 4240.8 4 2 4 1 .2 4240.6 4240.4 4240.4 4240.2 4240.2 424 0 . 0 4240.0 4239.4 4 2 3 9 .4 4239.6 4239.6 4239.8 4239.8 Legend Shallow Groundwater Elevation Contour (ft BTOC) Intermediate Groundwater Elevation Contour (ft BTOC) EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : M : \ P r o j e c t s \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 4 - 1 G W C o n t o u r s Q 3 2 0 2 1 . m x d , R E V I S E D : 0 8 / 1 1 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 4-1 Groundwater Contour Map July 26, 2021 EDO Western Corp. South Salt Lake City, Utah Notes: ft BTOC = Feet Below Top of Casing 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Ò> Ò> Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp B-1 4239.96 B-3 4240.92 MW-10 4238.32 MW-11 4237.29 MW-12 4240.39 MW-13 4240.65 MW-14 4240.8 MW-15 4240.68 MW-16 4239.58 MW-2 4239.37 MW-2A 4241.16 MW-3 4240.29 MW-4 4241.39 MW-5 4240.69 MW-6 4241.04 MW-7 4238.33 MW-8 4240.98 MW-9 4238.49 4240.0 42 3 7 . 4 4240.2 4240.4 4240 .6 4237. 6 4 2 4 0 .4 4237.8 4238.0 4238.2 4238.4 42 3 8 . 6 4238.8 42 3 9 . 0 4 2 4 1.2 42 3 9 . 2 42 3 9 . 4 42 3 9 . 6 42 3 9 . 8 4240.0 4 2 4 0 . 2 4 2 4 0.4 4240.6 4240.6 4241.0 4240.8 4240.8 Legend Shallow Groundwater Elevation Contour (ft BTOC) EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : M : \ P r o j e c t s \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 4 - 1 a S h a l l o w G W C o n t o u r s Q 3 2 0 2 1 . m x d , R E V I S E D : 0 8 / 1 1 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 4-1a Shallow Groundwater Contour Map July 26, 2021 EDO Western Corp. South Salt Lake City, Utah Notes: ft BTOC = Feet Below Top of Casing 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10I 4238.24 MW-11I 4237.74 MW-12I 4240.27 MW-13I 4240.47 MW-14I 4240.84 MW-15I 4240.67 MW-17I 4239.27 MW-18I 4239.31 MW-19I 4239.23 MW-20I 4239.84 MW-2I 4241.14 MW-3I 4241.12 MW-4I 4241.4 MW-5I 4240.94 MW-6I 4241.36 MW-7I 4239.32 MW-9I 4238.51 4241 4 2 3 7 . 8 42 3 8 423 8 . 2 4238.4 4238.6 4238.8 4239 4239.2 4241 4240.8 4241.2 4240.6 4240.4 4240.4 4240.2 4240.2 424 0 4240 4239.4 4 2 3 9 .4 4239.6 4239.6 4239.8 4239.8 Legend Ò>Intermediate Groundwater Monitoring Well Intermediate Groundwater Elevation Contour (ft BTOC) EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : M : \ P r o j e c t s \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 4 - 1 b I n t e r m e d i a t e G W C o n t o u r s Q 3 2 0 2 1 . m x d , R E V I S E D : 0 8 / 1 1 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 4-1b Intermediate Groundwater Contour Map July 26, 2021 EDO Western Corp. South Salt Lake City, Utah Notes: ft BTOC = Feet Below Top of Casing 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Ò> Ò> Ò>Ò> Ò>Ò> Ò>Ò> Ò>Ò>Ò>Ò> Ò>Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò>Ò> Ò>Ò> Ò>Ò> Ò>Ò> Ò> Ò>Ò> Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp B-1 4241.82 B-3 4241.91 MW-10 4239.25MW-11 4238.09 MW-12 4242.06 MW-13 4242.33 MW-14 4242.27 MW-15 4241.46 MW-16 4240.43 MW-2 4239.97 MW-2A 4241.28 MW-3 4241.17 MW-4 4241.88 MW-5 4241.61 MW-6 4241.94 MW-7 4239.48 MW-8 4242MW-9 4239.3 MW-10I 4237.55 MW-11I 4238.03 MW-12I 4241.29 MW-13I 4241.44 MW-14I 4241.92 MW-15I 4241.57 MW-17I 4240.08 MW-18I 4240.38 MW-19I 4241.08 MW-20I 4241.85 MW-2I 4241.26 MW-3I 4241.9 MW-4I 4242.08 MW-5I 4241.46 MW-6I 4241.68 MW-7I 4239.71 MW-9I 4239.0442 3 8 . 2 42 4 1.8 4 2 3 8.4 4242 .0 42 3 8 . 6 42 3 8 . 8 42 3 9 . 0 42 3 9 . 2 42 3 9 . 4 42 3 9 . 6 4239.8 4240.0 42 4 0 . 2 4 2 4 0 . 4 4 2 4 2.2 4 2 4 0 . 6 4 2 4 0 . 8 4 2 4 2.0 4 2 4 1 . 0 4241.8 42 4 1 . 6 4241.4 4 2 4 1 . 2 4241 . 2 4241.8 4 2 4 1 .6 4237 . 8 4 2 38.0 4238.4 4238.2 4238.6 42 3 8 .8 4239.0 4239.2 4239.4 4 2 3 9 . 6 4242.0 4 2 3 9 . 8 4 2 4 0 . 0 4 2 4 0 . 2 4 2 4 0 . 4 424 0 . 4 4 2 4 0 . 6 424 0 . 6 4 2 4 0 . 8 424 0 . 8 4241.0 424 1 . 0 4241.2 4241.2 424 1 . 8 4241.8 4 2 4 1 . 4 4241.4 4241.6 4241.6 Legend Ò>Shallow Groundwater Monitoring Well Ò>Intermediate Groundwater Monitoring Well Shallow Groundwater Elevation Contour (ft BTOC) Intermediate Groundwater Elevation Contour (ft BTOC) EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : M : \ P r o j e c t s \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 4 - 2 G W C o n t o u r s Q 4 2 0 2 1 . m x d , R E V I S E D : 0 8 / 1 1 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 4-2 Groundwater Contour Map November 2-3, 2021 EDO Western Corp. South Salt Lake City, Utah Notes: ft BTOC = Feet Below Top of Casing 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Ò> Ò> Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp B-1 4241.82 B-3 4241.91 MW-10 4239.25MW-11 4238.09 MW-12 4242.06 MW-13 4242.33 MW-14 4242.27 MW-15 4241.46 MW-16 4240.43 MW-2 4239.97 MW-2A 4241.28 MW-3 4241.17 MW-4 4241.88 MW-5 4241.61 MW-6 4241.94 MW-7 4239.48 MW-8 4242MW-9 4239.3 42 3 8 . 2 4241.8 4238. 4 4 2 4 2 .0 42 3 8 . 6 4238.8 4239.0 4 2 3 9 . 2 4 2 3 9 . 4 4 2 3 9 . 6 4 2 3 9 . 8 4 2 4 0 . 0 4 2 4 0 . 2 4 2 4 0 . 4 4242.2 4 2 4 0 . 6 4 2 4 0 . 8 424 2 .0 4 2 4 1 . 0 4241.8 4241.6 4241. 4 4 2 4 1 . 2 4241.2 Legend Ò>Shallow Groundwater Monitoring Well Shallow Groundwater Elevation Contour (ft BTOC) EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : M : \ P r o j e c t s \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 4 - 2 a S h a l l o w G W C o n t o u r s Q 4 2 0 2 1 . m x d , R E V I S E D : 0 7 / 2 8 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 4-2a Shallow Groundwater Contour Map November 2-3, 2021 EDO Western Corp. South Salt Lake City, Utah Notes: ft BTOC = Feet Below Top of Casing 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10I 4237.55MW-11I 4238.03 MW-12I 4241.29 MW-13I 4241.44 MW-14I 4241.92 MW-15I 4241.57 MW-17I 4240.08 MW-18I 4240.38 MW-19I 4241.08 MW-20I 4241.85 MW-2I 4241.26 MW-3I 4241.9 MW-4I 4242.08 MW-5I 4241.46 MW-6I 4241.68 MW-7I 4239.71 MW-9I 4239.04 4241.8 4 2 4 1 .6 4237 . 8 42 3 8 .0 4 2 38.4 4238.2 4238.6 4 238.8 4 2 3 9 .0 4239 . 2 4239.4 4 2 3 9 .6 4242.0 4239.8 42 4 0 . 0 4 2 4 0 . 2 4 2 4 0 . 4 424 0 . 4 4 2 4 0 . 6 424 0 . 6 4 2 4 0 . 8 424 0 . 8 4 2 4 1 . 0 424 1 . 0 4241.2 4241.2 424 1 . 8 4241.8 4 2 4 1 . 4 4241.4 4241.6 4241.6 Legend Ò>Intermediate Groundwater Monitoring Well Intermediate Groundwater Elevation Contour (ft BTOC) EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : M : \ P r o j e c t s \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 4 - 2 b I n t e r m e d i a t e G W C o n t o u r s Q 4 2 0 2 1 . m x d , R E V I S E D : 0 8 / 1 1 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 4-2b Intermediate Groundwater Contour Map November 2-3, 2021 EDO Western Corp. South Salt Lake City, Utah Notes: ft BTOC = Feet Below Top of Casing 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Ò> Ò> Ò>Ò> Ò>Ò> Ò>Ò> Ò>Ò>Ò>Ò> Ò>Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò>Ò> Ò>Ò> Ò>Ò> Ò>Ò> Ò> Ò>Ò> Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10I 4239.03 MW-11I 4238.22 MW-12I 4240.66 MW-13I 4240.65 MW-14I 4241.08 MW-15I 4241.45 MW-17I 4239.37 MW-18I 4239.75 MW-19I 4239.81 MW-20I 4240.9 MW-2I 4240.69 MW-3I 4241.5 MW-4I 4241.12 MW-5I 4241.26 MW-6I 4241.25 MW-7I 4239.53 MW-9I 4238.9 B-1 4240.96 B-3 4241.01 MW-10 4238.56 MW-11 4237.95 MW-12 4240.38 MW-13 4240.63 MW-14 4240.79 MW-15 4240.73 MW-16 4239.52 MW-2 4239.24 MW-2A 4240.49 MW-3 4240.37 MW-4 4240.95 MW-5 4240.81 MW-6 4241.05 MW-7 4238.58 MW-8 4240.89MW-9 4238.67 4240.4 4 2 4 1.0 4238.2 42 3 8 . 4 4241.0 42 3 8 . 6 42 3 8 . 8 42 3 9 . 0 42 3 9 . 2 42 3 9 . 4 42 39 . 6 42 3 9 . 8 4 2 4 0 . 0 4 2 4 0 . 2 4240.4 4240.8 4240.6 423 9 . 4 4241 . 4 4 2 3 8 . 4 424 1 .4 4 2 3 8 .6 4 2 3 8 . 8 4241.2 4 2 3 9. 0 4 2 3 9.2 4 2 3 9 . 4 423 9 . 6 4239.8 4 2 3 9.8 4241.2 4241.2 424 1 . 0 4241 . 0 4240.0 4240 . 0 4240.2 4240 . 2 4240.4 4240 . 4 4 2 4 0 . 6 4240 . 6 424 0 . 8 4 2 4 0.8 Legend Ò>Shallow Groundwater Monitoring Well Ò>Intermediate Groundwater Monitoring Well Shallow Groundwater Elevation Contour (ft BTOC) Intermediate Groundwater Elevation Contour (ft BTOC) EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : M : \ P r o j e c t s \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 4 - 3 G W C o n t o u r s Q 1 2 0 2 2 . m x d , R E V I S E D : 0 7 / 2 8 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 4-3 Groundwater Contour Map February 11-16, 2022 EDO Western Corp. South Salt Lake City, Utah Notes: ft BTOC = Feet Below Top of Casing 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Ò> Ò> Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp B-1 4240.96 B-3 4241.01 MW-10 4238.56 MW-11 4237.95 MW-12 4240.38 MW-13 4240.63 MW-14 4240.79 MW-15 4240.73 MW-16 4239.52 MW-2 4239.24 MW-2A 4240.49 MW-3 4240.37 MW-4 4240.95 MW-5 4240.81 MW-6 4241.05 MW-7 4238.58 MW-8 4240.89MW-9 4238.67 4240.4 4 2 4 1.0 4238.2 4238.4 4 2 41.042 3 8 . 6 42 3 8 . 8 42 3 9 . 0 42 3 9 . 2 42 3 9 . 4 42 3 9 . 6 4 2 3 9 . 8 4 2 4 0 . 0 4 2 4 0 . 2 4240.4 4240.8 4240. 6 Legend Ò>Shallow Groundwater Monitoring Well Shallow Groundwater Elevation Contour (ft BTOC) EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : M : \ P r o j e c t s \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 4 - 3 a S h a l l o w G W C o n t o u r s Q 1 2 0 2 2 . m x d , R E V I S E D : 0 7 / 2 8 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 4-3a Shallow Groundwater Contour Map February 11-16, 2022 EDO Western Corp. South Salt Lake City, Utah Notes: ft BTOC = Feet Below Top of Casing 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10I 4239.03 MW-11I 4238.22 MW-12I 4240.66 MW-13I 4240.65 MW-14I 4241.08 MW-15I 4241.45 MW-17I 4239.37 MW-18I 4239.75 MW-19I 4239.81 MW-20I 4240.9 MW-2I 4240.69 MW-3I 4241.5 MW-4I 4241.12 MW-5I 4241.26 MW-6I 4241.25 MW-7I 4239.53 MW-9I 4238.9 423 9 . 4 4241 . 4 4 2 3 8 . 4 42 4 1.4 4 2 3 8 . 6 4 2 3 8 . 8 4 241.2 4 2 3 9.0 4 2 3 9.2 4239.4 4 2 3 9 . 6 4 2 3 9 . 8 4 2 3 9.8 4241.2 4241.2 424 1 . 0 4241 . 0 4240.0 4240 . 0 4240.2 4240 . 2 4240.4 4240 . 4 4 2 4 0 . 6 4240 . 6 4 2 4 0 . 8 4 2 4 0.8 Legend Ò>Intermediate Groundwater Monitoring Well Intermediate Groundwater Elevation Contour (ft BTOC) EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : M : \ P r o j e c t s \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 4 - 3 b I n t e r m e d i a t e G W C o n t o u r s Q 1 2 0 2 2 . m x d , R E V I S E D : 0 7 / 2 8 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 4-3b Intermediate Groundwater Contour Map February 11-16, 2022 EDO Western Corp. South Salt Lake City, Utah Notes: ft BTOC = Feet Below Top of Casing 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Ò> Ò> Ò>Ò> Ò>Ò> Ò>Ò> Ò>Ò>Ò>Ò> Ò>Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò>Ò> Ò>Ò> Ò>Ò> Ò>Ò> Ò> Ò>Ò> Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10I 4238.89 MW-11I 4237.86 MW-12I MW-13I 4241.34 MW-14I 4241.4 MW-15I 4240.57 MW-17I 4239.89 MW-18I 4240.35 MW-19I 4240.68 MW-20I 4241.26 MW-2I 4241.17 MW-3I 4241.82 MW-4I 4241.82 MW-5I 4240.83 MW-6I 4241.66 MW-7I 4239.91 MW-9I 4239.16 B-1 4241.49 B-3 4241.57 MW-10 4239.09MW-11 4238.16 MW-12 4241.36 MW-13 4241.53 MW-14 4241.59 MW-15 4241.53 MW-16 4240.02 MW-2 4239.87 MW-2A 4240.93 MW-3 4240.98 MW-4 4241.65 MW-5 4241.22 MW-6 4241.68 MW-7 4239.25 MW-8 4241.62 MW-9 4239.174238. 4 423 8 .6 4238.8 4239.0 42 3 9 . 2 42 3 9 . 4 42 3 9 . 6 42 3 9 . 8 4 2 4 0 . 0 42 4 0 . 2 4 2 4 0 . 4 4 2 4 0 . 6 4 2 4 0 . 8 4241.4 4241.6 4241.2 4 2 4 1 . 0 4241.0 4 2 3 8 . 0 4 2 4 1.0 4241.2 4241.6 4 2 3 8 .2 4241.4 4 2 4 1 . 2 4 2 3 8 . 4 424 0.6 4 24 1 . 8 423 8. 6 42 3 8 . 8 423 9 . 0 4 2 39.2 4 2 3 9.4 4 2 3 9 . 6 42 3 9 . 8 4241.6 42 4 0 . 0 4241.4 4 2 4 0 . 2 42 4 0 . 2 4240.4 4240.4 4 2 41.2 4241 .2 4240.6 4 2 40.8 4 240.8 4 241.0 4 2 4 1.0 Legend Ò>Shallow Groundwater Monitoring Well Ò>Intermediate Groundwater Monitoring Well Shallow Groundwater Elevation Contour (ft BTOC) Intermediate Groundwater Elevation Contour (ft BTOC) EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : M : \ P r o j e c t s \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 4 - 4 G W C o n t o u r s Q 2 2 0 2 2 . m x d , R E V I S E D : 0 7 / 2 8 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 4-4 Groundwater Contour Map May 6, 2022 EDO Western Corp. South Salt Lake City, Utah Notes: ft BTOC = Feet Below Top of Casing 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Ò> Ò> Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp B-1 4241.49 B-3 4241.57 MW-10 4239.09MW-11 4238.16 MW-12 4241.36 MW-13 4241.53 MW-14 4241.59 MW-15 4241.53 MW-16 4240.02 MW-2 4239.87 MW-2A 4240.93 MW-3 4240.98 MW-4 4241.65 MW-5 4241.22 MW-6 4241.68 MW-7 4239.25 MW-8 4241.62 MW-9 4239.174238. 4 42 38.6 4238.8 4239.0 423 9.2 4239.4 4239.6 42 3 9 . 8 4 2 4 0 . 0 4 2 4 0 . 2 4 2 4 0 . 4 4 2 4 0 . 6 4 2 4 0 . 8 4241.4 4241.6 4241.2 4 2 4 1 . 0 4241.0 Legend Ò>Shallow Groundwater Monitoring Well Shallow Groundwater Elevation Contour (ft BTOC) EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : M : \ P r o j e c t s \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 4 - 4 a S h a l l o w G W C o n t o u r s Q 2 2 0 2 2 . m x d , R E V I S E D : 0 7 / 2 8 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 4-4a Shallow Groundwater Contour Map May 6, 2022 EDO Western Corp. South Salt Lake City, Utah Notes: ft BTOC = Feet Below Top of Casing 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò> Ò>Ò> Ò> Ò> Ò> Ò> Ò> Ò> Ò> Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10I 4238.89 MW-11I 4237.86 MW-12I MW-13I 4241.34 MW-14I 4241.4 MW-15I 4240.57 MW-17I 4239.89 MW-18I 4240.35 MW-19I 4240.68 MW-20I 4241.26 MW-2I 4241.17 MW-3I 4241.82 MW-4I 4241.82 MW-5I 4240.83 MW-6I 4241.66 MW-7I 4239.91 MW-9I 4239.16 4 2 3 8 . 0 4 2 4 1.0 4241.2 4241.6 4 2 3 8 .2 4241.4 4 2 4 1 . 2 4 2 3 8 . 4 424 0.6 42 4 1. 8 423 8 . 6 42 3 8 . 8 423 9 . 0 4 2 39.2 423 9 . 4 4239.6 4239.8 4241.6 4240.0 4241.4 4 2 4 0 . 2 42 4 0 . 2 4240.4 4240.4 4 2 41.2 4241 .2 4240.6 4 2 40.8 4 240.8 4 241.0 4 2 4 1.0 Legend Ò>Intermediate Groundwater Monitoring Well Intermediate Groundwater Elevation Contour (ft BTOC) EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : M : \ P r o j e c t s \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 4 - 4 b I n t e r m e d i a t e G W C o n t o u r s Q 2 2 0 2 2 . m x d , R E V I S E D : 0 7 / 2 8 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 4-4b Intermediate Groundwater Contour Map May 6, 2022 EDO Western Corp. South Salt Lake City, Utah Notes: ft BTOC = Feet Below Top of Casing 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t 'k 'k 'k'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k'k 'k 'k 'k'k Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10 12 Aug 2021 1,1-DCA: < 5.00 1,1-DCE: 6.18 1,2-DCA: < 5.00 1,4-Dioxane: 2.11 cis-1,2-DCE: 434 PCE: < 5.00 TCE: < 5.00 VC: < 5.00 MW-11 29 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 200 cis-1,2-DCE: < 1.00 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 MW-12 28 Jul 2021 1,1-DCA: 2.80 1,1-DCE: 1.09 1,2-DCA: < 1.00 1,4-Dioxane: 1.49 J+ cis-1,2-DCE: 56.2 PCE: < 1.00 TCE: < 1.00 VC: 2.94 MW-13 27 Jul 2021 1,1-DCA: 3.52 1,1-DCE: 1.58 1,2-DCA: < 1.00 1,4-Dioxane: 1.78 J+ cis-1,2-DCE: 104 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 MW-14 27 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 1.40 U cis-1,2-DCE: < 1.00 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 MW-15 28 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 1.40 U cis-1,2-DCE: 15.4 PCE: < 1.00 TCE: < 1.00 VC: 2.34 MW-16 28 Jul 2021 1,1-DCA: 2.42 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: 2.54 J+ cis-1,2-DCE: 57.9 PCE: < 1.00 TCE: < 1.00 VC: 10.7 MW-2 28 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 1.40 U cis-1,2-DCE: < 1.00 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 MW-2A 27 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 1.40 U cis-1,2-DCE: 1.25 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 MW-3 27 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 0.267 cis-1,2-DCE: 1.09 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 MW-4 28 Jul 2021 1,1-DCA: 8.74 1,1-DCE: 2.89 1,2-DCA: 1.76 1,4-Dioxane: 6.82 cis-1,2-DCE: 53.3 PCE: < 1.00 TCE: < 1.00 VC: 1.60 MW-5 28 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 1.00 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 MW-6 29 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 1.40 U cis-1,2-DCE: 30.0 PCE: < 1.00 TCE: 10.3 VC: < 1.00 MW-7 30 Jul 2021 1,1-DCA: < 1.00 UJ 1,1-DCE: < 1.00 UJ 1,2-DCA: < 1.00 UJ 1,4-Dioxane: < 1.40 UJ cis-1,2-DCE: < 1.00 UJ PCE: < 1.00 UJ TCE: < 1.00 UJ VC: < 1.00 UJ MW-8 12 Aug 2021 1,1-DCA: 40.1 1,1-DCE: 13.0 1,2-DCA: 6.39 1,4-Dioxane: 21.0 cis-1,2-DCE: 267 PCE: 34.1 TCE: 162 VC: 31.4 MW-9 30 Jul 2021 1,1-DCA: < 5.00 / < 5.00 1,1-DCE: < 5.00 / < 5.00 1,2-DCA: < 5.00 / < 5.00 1,4-Dioxane: 1.73 / < 1.40 cis-1,2-DCE: 306 / 317 PCE: < 5.00 / < 5.00 TCE: < 5.00 / < 5.00 VC: 21.0 / 17.7 B-1 27 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: 2.81 J+ cis-1,2-DCE: 1.87 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 B-3 27 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 1.00 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 Legend 'k Shallow Groundwater Monitoring Well EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : G : \ U S \ P r o j e c t s \ D - F \ E D O _ W e s t e r n \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 5 - 1 a A n a l y t i c a l S h a l l o w 2 0 2 1 Q 3 . m x d , R E V I S E D : 0 8 / 2 3 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : T y l e r H a r r i s 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 5-1a Shallow Groundwater Analytical Map July 2021 EDO Western Corp. South Salt Lake City, Utah Notes: < = Compound not detected. Reportable detection limit shown. Units are in µg/L = micrograms per liter J = Sample result qualified as estimated j = Sample result qualified as estimated J+ = Detected results are estimated with a high bias U = Nondetected, estimated detection limit UJ = Nondetected, estimated report limit Results screened against Utah Groundwater Quality Standard (Feb 2022) and EPA Tap Water Regional Screening Levels (May 2022). 1,1-DCA = 1,1-Dichloroethane (2.8) 1,1-DCE = 1,1-Dichloroethene (28 /7) 1,2-DCA = 1, 2-Dichloroethane (0.17 /5) 1,4-Dioxane (0.46 ) cis-1,2-DCE: cis-1,2-Dichloroethene (3.6 /70) PCE = Tetrachloroethene (4.1 /5 ) TCE = Trichloroethene (0.28 /5 ) VC = Vinyl Chloride (0.019 /2 ) Detections highlighted green indicate exceedances of both standards for all COCs besides 1,1-DCE, where the EPA Tap Regional Screening Level is greater than the Utah Groundwater Quality Standard. 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t 'k'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10I 30 Jul 2021 1,1-DCA: < 10.0 1,1-DCE: 14.3 1,2-DCA: < 10.0 1,4-Dioxane: 5.80 cis-1,2-DCE: 699 PCE: < 10.0 TCE: 40.7 VC: < 10.0 MW-11I 29 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 1.40 cis-1,2-DCE: < 1.00 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 MW-12I 28 Jul 2021 1,1-DCA: 9.46 1,1-DCE: 13.4 1,2-DCA: 59.7 1,4-Dioxane: 7.07 cis-1,2-DCE: 245 PCE: < 1.00 TCE: 36.5 VC: 13.8 MW-13I 27 Jul 2021 1,1-DCA: 13.5 1,1-DCE: 9.21 1,2-DCA: 5.09 1,4-Dioxane: 5.26 cis-1,2-DCE: 174 PCE: 62.4 TCE: 116 VC: 2.43 MW-14I 27 Jul 2021 1,1-DCA: 43.0 / 39.8 1,1-DCE: 21.3 / 20.1 1,2-DCA: 8.04 / 7.82 1,4-Dioxane: 25.5 / 26.3 cis-1,2-DCE: 285 / 318 PCE: 36.0 / 40.0 TCE: 144 / 139 VC: 17.6 J / 15.3 J MW-15I 28 Jul 2021 1,1-DCA: 25.8 1,1-DCE: 26.8 1,2-DCA: 3.39 1,4-Dioxane: 16.4 cis-1,2-DCE: 367 PCE: 21.6 TCE: 192 VC: 15.5 MW-17I 29 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 1.40 U cis-1,2-DCE: < 1.00 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 MW-18I 29 Jul 2021 1,1-DCA: 12.1 1,1-DCE: 3.93 1,2-DCA: < 1.00 1,4-Dioxane: 8.09 cis-1,2-DCE: 5.02 PCE: < 1.00 TCE: < 1.00 VC: 5.47 MW-19I 12 Aug 2021 1,1-DCA: 31.2 1,1-DCE: 27.1 1,2-DCA: 7.78 1,4-Dioxane: 35.8 cis-1,2-DCE: 135 PCE: 17.3 TCE: 82.2 VC: 18.5 MW-20I 29 Jul 2021 1,1-DCA: < 1.00 / < 1.00 1,1-DCE: < 1.00 / < 1.00 1,2-DCA: < 1.00 / < 1.00 1,4-Dioxane: < 1.40 U / < 1.40 U cis-1,2-DCE: < 1.00 / < 1.00 PCE: < 1.00 / < 1.00 TCE: < 1.00 / < 1.00 VC: < 1.00 / < 1.00 MW-2I 27 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 1.40 U cis-1,2-DCE: < 1.00 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 MW-3I 29 Jul 2021 1,1-DCA: < 1.00 UJ 1,1-DCE: < 1.00 UJ 1,2-DCA: < 1.00 UJ 1,4-Dioxane: < 1.40 UJ cis-1,2-DCE: < 1.00 UJ PCE: < 1.00 UJ TCE: < 1.00 UJ VC: < 1.00 UJ MW-4I 28 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: 20.4 cis-1,2-DCE: < 1.00 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 MW-5I 28 Jul 2021 1,1-DCA: < 1.00 1,1-DCE: < 1.00 1,2-DCA: < 1.00 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 1.00 PCE: < 1.00 TCE: < 1.00 VC: < 1.00 MW-6I 29 Jul 2021 1,1-DCA: < 1.00 UJ 1,1-DCE: < 1.00 UJ 1,2-DCA: < 1.00 UJ 1,4-Dioxane: < 1.40 UJ cis-1,2-DCE: < 1.00 UJ PCE: < 1.00 UJ TCE: < 1.00 UJ VC: < 1.00 UJ MW-7I 30 Jul 2021 1,1-DCA: < 1.00 UJ 1,1-DCE: < 1.00 UJ 1,2-DCA: < 1.00 UJ 1,4-Dioxane: < 1.40 UJ cis-1,2-DCE: < 1.00 UJ PCE: < 1.00 UJ TCE: < 1.00 UJ VC: < 1.00 UJ MW-9I 30 Jul 2021 1,1-DCA: 3.86 J 1,1-DCE: 30.5 J 1,2-DCA: 32.5 J 1,4-Dioxane: 7.82 cis-1,2-DCE: 1,380 J PCE: 13.9 J TCE: 212 J VC: 17.5 J Legend 'k Intermediate Groundwater Monitoring Well EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : G : \ U S \ P r o j e c t s \ D - F \ E D O _ W e s t e r n \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 5 - 1 b A n a l y t i c a l I n t e r m e d i a t e 2 0 2 1 Q 3 . m x d , R E V I S E D : 0 8 / 2 3 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : T y l e r H a r r i s 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 5-1b Intermediate Groundwater Analytical Map July 2021 EDO Western Corp. South Salt Lake City, Utah 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Notes: < = Compound not detected. Reportable detection limit shown. Units are in µg/L = micrograms per liter J = Sample result qualified as estimated j = Sample result qualified as estimated J+ = Detected results are estimated with a high bias U = Nondetected, estimated detection limit UJ = Nondetected, estimated report limit Results screened against Utah Groundwater Quality Standard (Feb 2022) and EPA Tap Water Regional Screening Levels (May 2022). 1,1-DCA = 1,1-Dichloroethane (2.8) 1,1-DCE = 1,1-Dichloroethene (28 /7) 1,2-DCA = 1, 2-Dichloroethane (0.17 /5) 1,4-Dioxane (0.46 ) cis-1,2-DCE: cis-1,2-Dichloroethene (3.6 /70) PCE = Tetrachloroethene (4.1 /5 ) TCE = Trichloroethene (0.28 /5 ) VC = Vinyl Chloride (0.019 /2 ) Detections highlighted green indicate exceedances of both standards for all COCs besides 1,1-DCE, where the EPA Tap Regional Screening Level is greater than the Utah Groundwater Quality Standard. 'k 'k 'k'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k'k Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10 03 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: 5.08 1,2-DCA: < 1.45 1,4-Dioxane: 1.36 cis-1,2-DCE: 406 J PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-11 02 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-12 04 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: 46.7 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-13 04 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: 12.5 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-14 03 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 0.531 J cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-16 04 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 2.23 cis-1,2-DCE: 56.5 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-2 02 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-2A 02 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-3 02 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-4 04 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 2.76 cis-1,2-DCE: 14.8 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-5 02 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-7 03 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-15 03 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: 6.16 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-6 04 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: 16.7 PCE: < 2.00 TCE: 6.20 VC: < 3.67 MW-8 04 Nov 2021 1,1-DCA: 34.2 / 32.6 1,1-DCE: 9.66 / 9.36 1,2-DCA: 5.26 / 5.02 1,4-Dioxane: 6.27 / 6.28 cis-1,2-DCE: 245 / 228 PCE: < 2.00 / < 2.00 TCE: 73.3 / 71.4 VC: 13.9 / 13.3 MW-9 03 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 1.12 cis-1,2-DCE: 251 J PCE: < 2.00 TCE: < 1.50 VC: < 3.67 B-1 02 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 4.75 cis-1,2-DCE:< 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 B-3 02 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 Legend 'k Shallow Groundwater Monitoring Well EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : G : \ U S \ P r o j e c t s \ D - F \ E D O _ W e s t e r n \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 5 - 2 a A n a l y t i c a l S h a l l o w 2 0 2 1 Q 4 . m x d , R E V I S E D : 0 8 / 2 3 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : T y l e r H a r r i s 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 5-2a Shallow Groundwater Analytical Map November 2021 EDO Western Corp. South Salt Lake City, Utah 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Notes: < = Compound not detected. Reportable detection limit shown. Units are in µg/L = micrograms per liter J = Sample result qualified as estimated j = Sample result qualified as estimated J+ = Detected results are estimated with a high bias U = Nondetected, estimated detection limit UJ = Nondetected, estimated report limit Results screened against Utah Groundwater Quality Standard (Feb 2022) and EPA Tap Water Regional Screening Levels (May 2022). 1,1-DCA = 1,1-Dichloroethane (2.8) 1,1-DCE = 1,1-Dichloroethene (28 /7) 1,2-DCA = 1, 2-Dichloroethane (0.17 /5) 1,4-Dioxane (0.46 ) cis-1,2-DCE: cis-1,2-Dichloroethene (3.6 /70) PCE = Tetrachloroethene (4.1 /5 ) TCE = Trichloroethene (0.28 /5 ) VC = Vinyl Chloride (0.019 /2 ) Detections highlighted green indicate exceedances of both standards for all COCs besides 1,1-DCE where, the EPA Tap Regional Screening Level is greater than the Utah Groundwater Quality Standard. 'k'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10I 03 Nov 2021 1,1-DCA: 5.62 1,1-DCE: 16.7 1,2-DCA: < 1.45 1,4-Dioxane: 4.15 cis-1,2-DCE: 871 J PCE: < 2.00 TCE: 65.8 J VC: < 3.67 MW-11I 02 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-13I 04 Nov 2021 1,1-DCA: 10.9 1,1-DCE: 7.03 1,2-DCA: < 1.45 1,4-Dioxane: 3.80 cis-1,2-DCE: 159 PCE: 27.2 TCE: 100 VC: < 3.67 MW-14I 03 Nov 2021 1,1-DCA: 36.2 1,1-DCE: 18.5 1,2-DCA: 7.48 1,4-Dioxane: 16.3 cis-1,2-DCE: 408 J PCE: 41.3 TCE: 188 J VC: 13.4 MW-15I 03 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: 7.51 J+ PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-17I 02 Nov 2021 1,1-DCA: < 1.81 UJ 1,1-DCE: < 2.85 UJ 1,2-DCA: < 1.45 UJ 1,4-Dioxane: 1.28 cis-1,2-DCE: < 1.57 UJ PCE: < 2.00 UJ TCE: < 1.50 UJ VC: < 3.67 UJ MW-18I 04 Nov 2021 1,1-DCA: 11.7 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 6.26 cis-1,2-DCE: 7.07 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-19I 04 Nov 2021 1,1-DCA: 32.5 1,1-DCE: 26.8 1,2-DCA: 9.31 1,4-Dioxane: 27.4 cis-1,2-DCE: 144 PCE: 19.5 TCE: 83.8 VC: 15.9 MW-20I 03 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 0.402 J cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-2I 02 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-3I 02 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-4I 04 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 15.4 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-5I 02 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-6I 04 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 0.818 j cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-7I 03 Nov 2021 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-9I 03 Nov 2021 1,1-DCA: < 1.81 / < 1.81 1,1-DCE: 27.9 / 20.8 1,2-DCA: 36.5 / 37.1 1,4-Dioxane: 5.90 cis-1,2-DCE: 1620 J / 1690 J PCE: 8.82 / 9.31 TCE: 199 J / 212 J VC: 14.6 / < 3.67 MW-12I 04 Nov 2021 1,1-DCA: 9.12 1,1-DCE: 12.2 1,2-DCA: 62.4 1,4-Dioxane: 4.41 cis-1,2-DCE: 383 J PCE: < 2.00 TCE: 36.6 VC: < 3.67 Legend 'k Intermediate Groundwater Monitoring Well EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : G : \ U S \ P r o j e c t s \ D - F \ E D O _ W e s t e r n \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 5 - 2 b A n a l y t i c a l I n t e r m e d i a t e 2 0 2 1 Q 4 . m x d , R E V I S E D : 0 8 / 2 3 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : T y l e r H a r r i s 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 5-2b Intermediate Groundwater Analytical Map November 2021 EDO Western Corp. South Salt Lake City, Utah 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Notes: < = Compound not detected. Reportable detection limit shown. Units are in µg/L = micrograms per liter J = Sample result qualified as estimated j = Sample result qualified as estimated J+ = Detected results are estimated with a high bias U = Nondetected, estimated detection limit UJ = Nondetected, estimated report limit Results screened against Utah Groundwater Quality Standard (Feb 2022) and EPA Tap Water Regional Screening Levels (May 2022). 1,1-DCA = 1,1-Dichloroethane (2.8) 1,1-DCE = 1,1-Dichloroethene (28 /7) 1,2-DCA = 1, 2-Dichloroethane (0.17 /5) 1,4-Dioxane (0.46 ) cis-1,2-DCE: cis-1,2-Dichloroethene (3.6 /70) PCE = Tetrachloroethene (4.1 /5 ) TCE = Trichloroethene (0.28 /5 ) VC = Vinyl Chloride (0.019 /2 ) Detections highlighted green indicate exceedances of both standards for all COCs besides 1,1-DCE, where the EPA Tap Regional Screening Level is greater than the Utah Groundwater Quality Standard. 'k 'k 'k'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k'k Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10 17 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 1.92 cis-1,2-DCE: 317 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-11 15 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 0.833 j cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-12 16 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 UJ 1,2-DCA: < 1.45 1,4-Dioxane: 1.26 cis-1,2-DCE: 37.3 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-14 17 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-15 17 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 UJ 1,2-DCA: < 1.45 1,4-Dioxane: 0.825 j cis-1,2-DCE: 8.43 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-16 16 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 UJ 1,2-DCA: < 1.45 1,4-Dioxane: 2.77 cis-1,2-DCE: 60.9 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-2 15 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 UJ 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-2A 15 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-3 15 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-4 16 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 UJ 1,2-DCA: < 1.45 1,4-Dioxane: 2.17 cis-1,2-DCE: 21.0 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-5 14 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-9 15 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 1.26 cis-1,2-DCE: 112 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-13 16 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 UJ 1,2-DCA: < 1.45 1,4-Dioxane: 1.43 cis-1,2-DCE: 93.9 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-6 16 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 UJ 1,2-DCA: < 1.45 1,4-Dioxane: 0.379 j cis-1,2-DCE: 11.7 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-7 15 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-8 16 Feb 2022 1,1-DCA: 13.6 1,1-DCE: < 2.85 UJ 1,2-DCA: < 1.45 / < 1.45 1,4-Dioxane: 3.69 / 3.95 cis-1,2-DCE: 88.0 / 87.1 PCE: < 2.00 / < 2.00 TCE: 11.9 / 12.9 VC: < 3.67 / < 3.67 B-1 15 Feb 2022 1,1-DCA: < 1.81 / < 1.81 1,1-DCE: < 2.85 / < 2.85 1,2-DCA: < 1.45 UJ / < 1.45 UJ 1,4-Dioxane: 7.68/ 7.96 cis-1,2-DCE: 6.12 / 5.82 PCE: < 2.00 / < 2.00 TCE: < 1.50 / < 1.50 VC: < 3.67 / < 3.67 B-3 15 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: <1.45 UJ 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 1.57 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 Legend 'k Shallow Groundwater Monitoring Well EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : G : \ U S \ P r o j e c t s \ D - F \ E D O _ W e s t e r n \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 5 - 3 a A n a l y t i c a l S h a l l o w 2 0 2 2 Q 1 . m x d , R E V I S E D : 0 8 / 2 3 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : T y l e r H a r r i s 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 5-3a Shallow Groundwater Analytical Map February 2022 EDO Western Corp. South Salt Lake City, Utah 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Notes: < = Compound not detected. Reportable detection limit shown. Units are in µg/L = micrograms per liter J = Sample result qualified as estimated j = Sample result qualified as estimated J+ = Detected results are estimated with a high bias U = Nondetected, estimated detection limit UJ = Nondetected, estimated report limit Results screened against Utah Groundwater Quality Standard (Feb 2022) and EPA Tap Water Regional Screening Levels (May 2022). 1,1-DCA = 1,1-Dichloroethane (2.8) 1,1-DCE = 1,1-Dichloroethene (28 /7) 1,2-DCA = 1, 2-Dichloroethane (0.17 /5) 1,4-Dioxane (0.46 ) cis-1,2-DCE: cis-1,2-Dichloroethene (3.6 /70) PCE = Tetrachloroethene (4.1 /5 ) TCE = Trichloroethene (0.28 /5 ) VC = Vinyl Chloride (0.019 /2 ) Detections highlighted green indicate exceedances of both standards for all COCs besides 1,1-DCE, where the EPA Tap Regional Screening Level is greater than the Utah Groundwater Quality Standard. 'k'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10I 17 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: 10.1 1,2-DCA: < 1.45 1,4-Dioxane: 5.69 cis-1,2-DCE: 609 PCE: < 2.00 TCE: 33.0 VC: < 3.67 MW-11I 14 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-12I 16 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: 12.8 1,2-DCA: 58.7 1,4-Dioxane: 6.30 cis-1,2-DCE: 339 PCE: < 2.00 TCE: 31.0 VC: 6.81 MW-13I 16 Feb 2022 1,1-DCA: 11.2 1,1-DCE: 8.80 1,2-DCA: < 1.45 1,4-Dioxane: 6.87 cis-1,2-DCE: 164 PCE: 19.0 TCE: 53.8 VC: < 3.67 MW-14I 17 Feb 2022 1,1-DCA: 32.4 1,1-DCE: 23.0 1,2-DCA: 5.17 1,4-Dioxane: 21.5 cis-1,2-DCE: 447 PCE: 18.9 TCE: 51.7 VC: 6.49 MW-15I 17 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 2.34 cis-1,2-DCE: 36.3 PCE: < 2.00 TCE: < 1.50 VC: 12.6 J MW-17I 14 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 1.58 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-18I 17 Feb 2022 1,1-DCA: 8.12 J 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 6.68 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-19I 17 Feb 2022 1,1-DCA: 28.8 1,1-DCE: 29.6 1,2-DCA: 6.73 1,4-Dioxane: 43.8 cis-1,2-DCE: 123 PCE: 12.7 TCE: < 15.0 VC: 11.8 MW-20I 14 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: 0.680 j cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-2I 15 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 UJ 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-3I 15 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-4I 16 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 UJ 1,2-DCA: < 1.45 1,4-Dioxane: 19.9 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-5I 14 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-6I 16 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 UJ 1,2-DCA: < 1.45 1,4-Dioxane: 0.988 j cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 MW-9I 15 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: 26.4 1,2-DCA: 31.1 1,4-Dioxane: 7.40 cis-1,2-DCE: 1600 PCE: 8.41 TCE: < 150 VC: 8.08 MW-7I 15 Feb 2022 1,1-DCA: < 1.81 1,1-DCE: < 2.85 1,2-DCA: < 1.45 1,4-Dioxane: < 0.300 cis-1,2-DCE: < 5.00 PCE: < 2.00 TCE: < 1.50 VC: < 3.67 Legend 'k Intermediate Groundwater Monitoring Well EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : G : \ U S \ P r o j e c t s \ D - F \ E D O _ W e s t e r n \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 5 - 3 b A n a l y t i c a l I n t e r m e d i a t e 2 0 2 2 Q 1 . m x d , R E V I S E D : 0 8 / 2 3 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : T y l e r H a r r i s 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 5-3b Intermediate Groundwater Analytical Map February 2022 EDO Western Corp. South Salt Lake City, Utah 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Notes: < = Compound not detected. Reportable detection limit shown. Units are in µg/L = micrograms per liter J = Sample result qualified as estimated j = Sample result qualified as estimated J+ = Detected results are estimated with a high bias U = Nondetected, estimated detection limit UJ = Nondetected, estimated report limit Results screened against Utah Groundwater Quality Standard (Feb 2022) and EPA Tap Water Regional Screening Levels (May 2022). 1,1-DCA = 1,1-Dichloroethane (2.8) 1,1-DCE = 1,1-Dichloroethene (28 /7) 1,2-DCA = 1, 2-Dichloroethane (0.17 /5) 1,4-Dioxane (0.46 ) cis-1,2-DCE: cis-1,2-Dichloroethene (3.6 /70) PCE = Tetrachloroethene (4.1 /5 ) TCE = Trichloroethene (0.28 /5 ) VC = Vinyl Chloride (0.019 /2 ) Detections highlighted green indicate exceedances of both standards for all COCs besides 1,1-DCE, where the EPA Tap Regional Screening Level is greater than the Utah Groundwater Quality Standard. 'k 'k 'k 'k 'k'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k'k Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10 12 May 2022 1,1-DCA: 2.88 1,1-DCE: 3.92 1,2-DCA: < 0.340 1,4-Dioxane: 0.861 j cis-1,2-DCE: 284 PCE: < 0.388 TCE: < 0.354 VC: 2.37 MW-11 09 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-12 12 May 2022 1,1-DCA: 1.88 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: 32.6 PCE: < 0.194 TCE: < 0.177 VC: 5.03 MW-13 11 May 2022 1,1-DCA: 2.76 1,1-DCE: 1.21 1,2-DCA: < 0.170 UJ 1,4-Dioxane: 0.597 J cis-1,2-DCE: 84.5 J- PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-14 11 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 UJ 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-16 11 May 2022 1,1-DCA: 2.46 1,1-DCE: < 0.241 1,2-DCA: < 0.170 UJ 1,4-Dioxane: 1.39 j cis-1,2-DCE: 57.8 PCE: < 0.194 TCE: < 0.177 VC: 2.99 MW-2 09 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-2A 10 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-3 10 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: 1.30 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-4 11 May 2022 1,1-DCA: 1.87 1,1-DCE: < 0.241 1,2-DCA: < 0.170 UJ 1,4-Dioxane: < 0.267 cis-1,2-DCE: 18.8 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-5 09 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-8 10 May 2022 1,1-DCA: 14.7 / 14.6 1,1-DCE: 3.97 / 3.97 1,2-DCA: 1.97 / 2.00 1,4-Dioxane: 1.58 / 1.57 cis-1,2-DCE: 59.2 / 60.2 PCE: < 0.194 / < 0.194 TCE: 7.75 / 7.96 VC: 4.44 / 4.35 MW-9 11 May 2022 1,1-DCA: 1.36 1,1-DCE: < 0.241 1,2-DCA: < 0.170 UJ 1,4-Dioxane: < 0.267 cis-1,2-DCE: 95.4 PCE: < 0.194 TCE: < 0.177 VC: 1.88 MW-15 10 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: 3.14 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-6 11 May 2022 1,1-DCA: 1.01 1,1-DCE: < 0.241 1,2-DCA: < 0.170 UJ 1,4-Dioxane: < 0.267 cis-1,2-DCE: 10.4 PCE: < 0.194 TCE: 2.44 VC: < 0.280 MW-7 10 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 B-1 10 May 2022 1,1-DCA: 3.57 1,1-DCE: 2.00 1,2-DCA: 1.60 1,4-Dioxane: 7.00 cis-1,2-DCE: 8.37 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 B-3 10 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 Legend 'k Shallow Groundwater Monitoring Well EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : G : \ U S \ P r o j e c t s \ D - F \ E D O _ W e s t e r n \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 5 - 4 a A n a l y t i c a l S h a l l o w 2 0 2 2 Q 2 . m x d , R E V I S E D : 0 8 / 2 3 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : T y l e r H a r r i s 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 5-4a Shallow Groundwater Analytical Map May 2022 EDO Western Corp. South Salt Lake City, Utah 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Notes: < = Compound not detected. Reportable detection limit shown. Units are in µg/L = micrograms per liter J = Sample result qualified as estimated j = Sample result qualified as estimated J+ = Detected results are estimated with a high bias U = Nondetected, estimated detection limit UJ = Nondetected, estimated report limit Results screened against Utah Groundwater Quality Standard (Feb 2022) and EPA Tap Water Regional Screening Levels (May 2022). 1,1-DCA = 1,1-Dichloroethane (2.8) 1,1-DCE = 1,1-Dichloroethene (28 /7) 1,2-DCA = 1, 2-Dichloroethane (0.17 /5) 1,4-Dioxane (0.46 ) cis-1,2-DCE: cis-1,2-Dichloroethene (3.6 /70) PCE = Tetrachloroethene (4.1 /5 ) TCE = Trichloroethene (0.28 /5 ) VC = Vinyl Chloride (0.019 /2 ) Detections highlighted green indicate exceedances of both standards for all COCs besides 1,1-DCE, where the EPA Tap Regional Screening Level is greater than the Utah Groundwater Quality Standard. 'k'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k 'k Asael Farr & Sons Company (Farr Better Ice Cream) Hale 220 West, LLC Property Investment Group (Tire World) EDO Western Corp MW-10I 12 May 2022 1,1-DCA: 5.87 1,1-DCE: 14.2 1,2-DCA: < 0.850 1,4-Dioxane: 3.60 cis-1,2-DCE: 752 PCE: < 0.970 TCE: 51.7 VC: < 1.40 MW-11I 09 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-13I 11 May 2022 1,1-DCA: 9.84 1,1-DCE: 7.10 1,2-DCA: 4.52 J 1,4-Dioxane: 3.95 cis-1,2-DCE: 161 PCE: 18.4 TCE: 53.9 VC: 1.25 MW-14I 11 May 2022 1,1-DCA: 33.8 1,1-DCE: 19.1 1,2-DCA: 5.48 J 1,4-Dioxane: 16.5 cis-1,2-DCE: 449 J PCE: 14.1 TCE: 76.6 VC: 8.33 MW-17I 09 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: 0.634 j cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-18I 11 May 2022 1,1-DCA: 9.92 / 10.6 1,1-DCE: 4.53 / 4.56 1,2-DCA: < 0.170 UJ / < 0.170 UJ 1,4-Dioxane: 6.12 / 6.07 cis-1,2-DCE: 6.88 / 6.94 PCE: < 0.194 / < 0.194 TCE: 1.37 / 1.28 VC: 3.48 / 3.36 MW-19I 11 May 2022 1,1-DCA: 32.6 1,1-DCE: 27.7 1,2-DCA: 7.42 J 1,4-Dioxane: 31.0 cis-1,2-DCE: 157 PCE: 13.7 TCE: 69.0 VC: 12.3 MW-20I 10 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-2I 10 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: 1.02 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-3I 10 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-4I 11 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 UJ 1,4-Dioxane: 17.3 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-5I 09 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-6I 11 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 UJ 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-7I 10 May 2022 1,1-DCA: < 0.203 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: < 0.267 cis-1,2-DCE: < 0.148 PCE: < 0.194 TCE: < 0.177 VC: < 0.280 MW-9I 11 May 2022 1,1-DCA: < 2.03 1,1-DCE: 24.1 1,2-DCA: 26.0 J 1,4-Dioxane: 5.84 cis-1,2-DCE: 1360 PCE: < 1.94 TCE: 130 VC: < 2.80 MW-15I 10 May 2022 1,1-DCA: 3.53 1,1-DCE: < 0.241 1,2-DCA: < 0.170 1,4-Dioxane: 3.67 cis-1,2-DCE: 17.5 PCE: < 0.194 TCE: 1.08 VC: 27.7 Legend 'k Intermediate Groundwater Monitoring Well EDO Western Property Parcel Boundary 0 125 250 Feet FI L E : G : \ U S \ P r o j e c t s \ D - F \ E D O _ W e s t e r n \ E D O W e s t e r n \ A n n u a l R e p o r t 2 0 2 1 - 2 0 2 2 \ F i g u r e 5 - 4 b A n a l y t i c a l I n t e r m e d i a t e 2 0 2 2 Q 2 . m x d , R E V I S E D : 0 8 / 2 3 / 2 0 2 2 , S C A L E : 1 : 1 , 3 7 6 w h e n p r i n t e d a t 1 1 x 1 7 DR A W N B Y : J i m m y H o l c o m b 0 110 22055 Feet ¯ ¯ Environmental Resources Managementwww.erm.com Source: Esri - World Topoographic Map; NAD 1983 StatePlane Utah Central FIPS 4302 Feet ERM Figure 5-4b Intermediate Groundwater Analytical Map May 2022 EDO Western Corp. South Salt Lake City, Utah 0 2.5 51.25 Miles ¯ 2700 South Street 30 0 W e s t S t r e e t Notes: < = Compound not detected. Reportable detection limit shown. Units are in µg/L = micrograms per liter J = Sample result qualified as estimated j = Sample result qualified as estimated J+ = Detected results are estimated with a high bias U = Nondetected, estimated detection limit UJ = Nondetected, estimated report limit Results screened against Utah Groundwater Quality Standard (Feb 2022) and EPA Tap Water Regional Screening Levels (May 2022). 1,1-DCA = 1,1-Dichloroethane (2.8) 1,1-DCE = 1,1-Dichloroethene (28 /7) 1,2-DCA = 1, 2-Dichloroethane (0.17 /5) 1,4-Dioxane (0.46 ) cis-1,2-DCE: cis-1,2-Dichloroethene (3.6 /70) PCE = Tetrachloroethene (4.1 /5 ) TCE = Trichloroethene (0.28 /5 ) VC = Vinyl Chloride (0.019 /2 ) Detections highlighted green indicate exceedances of both standards for all COCs besides 1,1-DCE, where the EPA Tap Regional Screening Level is greater than the Utah Groundwater Quality Standard. APPENDIX A FIELD FORMS AND DOCUMENTATION APPENDIX B DAILY QUALITY CONTROL FORMS APPENDIX C LABORATORY ANALYTICAL REPORTS ANALYTICAL REPORT Eurofins Pittsburgh 301 Alpha Drive RIDC Park Pittsburgh, PA 15238 Tel: (412)963-7058 Laboratory Job ID: 180-133728-1 Client Project/Site: EDO Western Corp. Revision: 4 For: ERM-West 1050 SW 6th Avenue Suite 1650 Portland, Oregon 97204 Attn: Mr. Justin Dauphinais Authorized for release by: 9/6/2022 2:28:30 PM Ken Hayes, Project Manager II (615)301-5035 Ken.Hayes@Eurofinset.com This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Results relate only to the items tested and the sample(s) as received by the laboratory. PA Lab ID: 02-00416 1 2 3 4 5 6 7 8 9 10 11 12 13 Table of Contents Client: ERM-West Project/Site: EDO Western Corp. Laboratory Job ID: 180-133728-1 Page 2 of 147 Eurofins Pittsburgh 9/6/2022 (Rev. 4) Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .141 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .145 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .146 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Job ID: 180-133728-1 Laboratory: Eurofins Pittsburgh Narrative Job Narrative 180-133728-1 Revision 4 The report being provided is a revision of the original report sent on 3/2/2022. The report (revision 4) is being revised due to: Include all data from the 1st Quarter sampling event into 1 report. Revision 3 Revised to merge job -2 data into job -1. This report being provided is a revision of the report sent on 3/16/2022 Revision 2 The report being provided is a revision of the original report sent on 3/03/2022. The report (revision 2) is being revised due to: Addition of several 8260D analytes to the spike list.. Revised Report: Revised to include 8260D VOCs in MW-5 (180-133728-1) previously omitted. This report replaces the one generated on 03/02/22. Comments No additional comments. Receipt The samples were received on 2/16/2022 9:45 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 2.1º C. Receipt Exceptions The containers received for the following sample did not match the information listed on the Chain-of-Custody (COC): MW-11I-C (180-133728-6). Three containers were received while the COC lists 8260 for TAPITT and 8260 SIM for Pensacola. GC/MS VOA Method 8260D: The continuing calibration verification (CCV) analyzed in 180-388935 was outside the method criteria for the following analytes: 2-Butanone, 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene, 1,4-Dioxane %D and RF, Methylcyclohexane and Isopropylbenzene. A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: Internal standard (ISTD) response for TBA-d9 for the following samples in analytical batch 180-388935 was outside acceptance criteria: MW-5 (180-133728-1) and MW-20I (180-133728-3). This ISTD does not correspond to any of the requested target compounds reported from this analytical batch; therefore, the data have been reported. Method 8260D: The continuing calibration verification (CCV) analyzed in 180-388935 was outside the method criteria for the following analytes: 1,2-Dibromo-3-Chloropropane. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The laboratory control sample (LCS) for analytical batch 180-388935 recovered outside control limits for the following analytes: 1,2,4-Trichlorobenzene, 1,2-Dichlorobenzene, 1,3-Dichlorobenzene, 1,4-Dichlorobenzene, 1,4-Dioxane, Chlorobenzene and Methylene Chloride. A low-level LCS (LLCS), spiked at the reporting limit (RL), was prepared with this batch. The affected target analytes recovered within acceptance limits; therefore, the LLCS demonstrates the analytical system had sufficient sensitivity to detect the compounds had they been present. Since the affected target compounds were not detected in the samples, the data have been reported and qualified. Method 8260D: The RPD of the laboratory control sample (LCS) and laboratory control sample duplicate (LCSD) for analytical batch 180-388935 recovered outside control limits for the following analytes: 1,2-Dichlorobenzene, Acetone, 1,3-Dichlorobenzene, 1,1-Dichloroethene, Methyl acetate and 1,2,4-Trichlorobenzene. Method 8260D: The RPD of the laboratory control sample (LCS) and laboratory control sample duplicate (LCSD) for preparation batch 180-388983 and analytical batch 180-388935 recovered outside control limits for the following analytes: 1,2,4-Trichlorobenzene, Eurofins Pittsburgh Page 3 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Job ID: 180-133728-1 (Continued) Laboratory: Eurofins Pittsburgh (Continued) Methylene Chloride, 1,1-Dichloroethene, 1,1,2-Trichloro-1,2,2-trifluoroethane and 2-Butanone (MEK). Method 8260D: Sample MW-11I-C (180-133728-6) contains Methylene Chloride above the reporting limit (RL). Reanalysis was performed with concurring results. Method 8260D: The continuing calibration verification (CCV) associated with batch 400-568080 recovered outside acceptance criteria, low biased, for Chloroethane, Bromomethane and Trichlorofluoromethane. A reporting limit (RL) standard was analyzed, and the target analytes are detected. Since the associated samples were non-detect for the analyte(s), the data are reported. Method 8260D: Due to the high concentration of Styrene, the matrix spike / matrix spike duplicate (MS/MSD) for analytical batch 400-568080 could not be evaluated for accuracy and precision. The associated laboratory control sample (LCS) met acceptance criteria. Method 8260D: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 400-568080 were outside control limits. Sample matrix interference and/or non-homogeneity are suspected. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. VOA Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 180-133728-2 Comments No additional comments. Receipt The samples were received on 2/16/2022 9:45 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 2.1º C. GC/MS VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. VOA Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 180-133790-1 Revision 2 Revised to merge job -2 data into job -1. This report being provided is a revision of the report sent on 3/16/2022 Revision 1 The report being provided is a revision of the original report sent on 2/28/2022. The report (revision 1) is being revised due to: Addition of several 8260D analytes to the spike list.. Comments No additional comments. Receipt The samples were received on 2/16/2022 9:45 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 2.1º C. Eurofins Pittsburgh Page 4 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Job ID: 180-133728-1 (Continued) Laboratory: Eurofins Pittsburgh (Continued) Receipt Exceptions The Chain-of-Custody (COC) was incomplete as received and/or improperly completed. There are no sample collection dates listed on the COC: however they are on the labels. GC/MS VOA Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-389102 was outside the method criteria for the following analytes: Ethylene Dibromide, trans-1,3-Dichloropropene, 1,2-Dichloroethane, 2-Butanone, 2-Hexanone, 1,2-Dibromo-3-Chloropropane, 1,2,4-Trichlorobenzene, Acetone, 1,2,3-Trichlorobenzene, 1,4-Dioxane and Methyl acetate. A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-389102 was outside the method criteria for the following analytes: 1,4-Dioxane (RF). A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-389226 was outside the method criteria for the following analytes: 1,2-Dibromo-3-Chloropropane, Dichloro-difluoromethane, 1,2,3-Trichlorobenzene, 1,4-Dioxane and Methyl acetate. (LOW). A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-389226 was outside the method criteria for the following analytes: 1,4-Dioxane (RF). A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 180-389102 were outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits. Method 8260D: The matrix spike (MS) recoveries for the following sample associated with analytical batch 180-389226 were outside control limits for 1,2,3-Trichlorobenzene: (180-133748-E-1 MS). The associated laboratory control sample (LCS) recovery met acceptance criteria. Method 8260D: The following samples were diluted to bring the concentration of target analytes within the calibration range: MW-9 (180-133790-11) and MW-9I (180-133790-12). Elevated reporting limits (RLs) are provided. Method 8260D: The continuing calibration verification (CCV) associated with batch 400-567694 recovered above the upper control limit for 1,2-Dichloropropane, Bromomethane and Methylcyclohexane. The samples associated with this CCV were non-detects for the affected analytes; therefore, the data have been reported. Method 8260D: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 400-567694 were outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits. Method 8260D: Sample MW-11-C (180-133790-14) contains Methylene Chloride above the reporting limit. Reanalysis was performed with concurring results. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. VOA Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 180-133790-2 Eurofins Pittsburgh Page 5 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Job ID: 180-133728-1 (Continued) Laboratory: Eurofins Pittsburgh (Continued) Comments No additional comments. Receipt The samples were received on 2/16/2022 9:45 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 2.1º C. Receipt Exceptions The Chain-of-Custody (COC) was incomplete as received and/or improperly completed. There are no sample collection dates listed on the COC: however they are on the labels. GC/MS VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. VOA Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 180-133839-1 Revision 2 The report being provided is a revision of the original report sent on 3/10/2022. The report (revision 2) is being revised due to: Addition of several 8260D analytes to the spike list.. Revision The report being provided is a revision of the original report sent on 3/2/2022. The report (revision 1) is being revised due to: MW-8a and MW-16c need a - added between the last number and letter.. Comments No additional comments. Receipt The samples were received on 2/17/2022 9:30 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 4.3º C. GC/MS VOA Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-389414 was outside the method criteria for the following analytes: 1,4-Dioxane(RF), 1,2,3-Trichlorobenzene and 1,2,4-Trichlorobenzene.(LOW). A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in 180-389414 was outside the method criteria for the following analytes: Acetone, 1,1-Dichloroethene, Chloroethane, Chloromethane and Methylene Chloride.(HIGH). As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The laboratory control sample (LCS) for analytical batch 180-389414 recovered outside control limits for the following analytes: 1,1-Dichloroethene. These analytes were biased high in the LCS and were not detected in the associated samples; therefore, the data have been reported. Method 8260D: The continuing calibration verification (CCV) analyzed in 180-389531 was outside the method criteria for the following analytes: 1,1-Dichloroethene, Carbon disulfide, Chloroethane and Dichloro-difluoromethane. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-389531 was outside the method criteria for the Eurofins Pittsburgh Page 6 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Job ID: 180-133728-1 (Continued) Laboratory: Eurofins Pittsburgh (Continued) following analytes: 1,2,3-Trichlorobenzene and 1,2,4-Trichlorobenzene (LOW). A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-389531 was outside the method criteria for the following analyte: 1,4-Dioxane RF. A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analyte is considered estimated. Method 8260D: The following samples were diluted to bring the concentration of target analytes within the calibration range: MW-8 (180-133839-5), MW-8a (180-133839-6), MW-12i (180-133839-8), MW-13 (180-133839-9), MW-13i (180-133839-10) and MW-16 (180-133839-11). Elevated reporting limits (RLs) are provided. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-389659 was outside the method criteria for the following analytes: 1,4-Dioxane(%D & RF), 1,2,4-Trichlorobenzene, 1,2,3-Trichlorobenzene, Methyl acetate and 2-Butanone.(LOW). A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in 180-389659 was outside the method criteria for the following analytes: Chloroethane and 1,1,2-Trichlorotrifluoroethane.(HIGH). As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Narrative Job Narrative 180-133839-2 Revision The report being provided is a revision of the original report sent on 3/2/2022. The report (revision 1) is being revised due to: MW-8a and MW-16c need a - added between the last number and letter.. Comments No additional comments. Receipt The samples were received on 2/17/2022 9:30 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 4.3º C. GC/MS VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. VOA Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 180-133991-1 Revision 1 The report being provided is a revision of the original report sent on 3/04/2022. The report (revision 1) is being revised due to: Addition of several 8260D analytes to the spike list.. Comments No additional comments. Eurofins Pittsburgh Page 7 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Job ID: 180-133728-1 (Continued) Laboratory: Eurofins Pittsburgh (Continued) Receipt The samples were received on 2/21/2022 9:30 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 4.2º C. GC/MS VOA Method 8260D: The continuing calibration verification (CCV) analyzed in 180-389531 was outside the method criteria for the following analytes: 1,1-Dichloroethene, Carbon disulfide, Chloroethane and Dichloro-difluoromethane. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-389531 was outside the method criteria for the following analytes: 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene and 1,4-Dioxane RF. A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 180-389531 were outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-389659 was outside the method criteria for the following analytes: 1,4-Dioxane(%D & RF), 1,2,4-Trichlorobenzene, 1,2,3-Trichlorobenzene, Methyl acetate and 2-Butanone.(LOW). A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in 180-389659 was outside the method criteria for the following analytes: Chloroethane and 1,1,2-Trichlorotrifluoroethane.(HIGH). As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: Sample reported, however internal/surrogate were not detected. Will reanalyze with MS/MSD. MW-15I (180-133991-7) Method 8260D: The matrix spike / matrix spike duplicate (MS/MSD) precision for analytical batch 180-389531 was outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample(LCS) precision was within acceptance limits. Method 8260D: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 180-389659 were outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits. Method 8260D: The following samples were diluted to bring the concentration of target analytes within the calibration range: MW-10 (180-133991-1), MW-10I (180-133991-2) and MW-14I (180-133991-5). Elevated reporting limits (RLs) are provided. Method 8260D: The continuing calibration verification (CCV) analyzed in 180-389738 was outside the method criteria for the following analytes: Carbon disulfide, Chloroethane, Methyl tert-butyl ether and Methylene Chloride. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-389738 was outside the method criteria for the following analytes: 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, 1,4-Dioxane RF and Dichloro-difluoromethane. A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The laboratory control sample (LCS) for analytical batch 180-389738 recovered outside control limits for the following analyte: 1,4-Dioxane. These analytes were biased high in the LCS and were not detected in the associated samples; therefore, the data have been reported. Method 8260D: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 180-389738 were outside control limits. Sample matrix interference is suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits. Eurofins Pittsburgh Page 8 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Job ID: 180-133728-1 (Continued) Laboratory: Eurofins Pittsburgh (Continued) Method 8260D: The matrix spike / matrix spike duplicate (MS/MSD) precision for analytical batch 180-389738 was outside control limits. Sample matrix interference is suspected. Method 8260D: Internal standard (ISTD) response for 1,4-Dichlorobenzene-d4 for the following sample in analytical batch 180-389872 was outside acceptance criteria: MW-14I (180-133991-5). This ISTD does not correspond to any of the requested target compounds reported from this analytical batch; therefore, the data have been reported. Method 8260D: The following sample was diluted to bring the concentration of target analytes within the calibration range: MW-14I (180-133991-5). Elevated reporting limits (RLs) are provided. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-389873 was outside the method criteria for the following analytes: 1,4-Dioxane RF, 1,4-Dioxane, 1,2,3-Trichlorobenzene, 2-Butanone, Chloromethane, Methyl acetate, Methylcyclohexane, Vinyl chloride and Dichloro-difluoromethane (LOW). A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The following sample was diluted to bring the concentration of target analytes within the calibration range: MW-19I (180-133991-9). Elevated reporting limits (RLs) are provided. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Narrative Job Narrative 180-133991-2 Comments No additional comments. Receipt The samples were received on 2/21/2022 9:30 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 4.2º C. GC/MS VOA Method 8260D SIM: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 400-568096 were outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. VOA Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Eurofins Pittsburgh Page 9 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Definitions/Glossary Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Qualifiers GC/MS VOA Qualifier Description *-LCS and/or LCSD is outside acceptance limits, low biased. Qualifier *+LCS and/or LCSD is outside acceptance limits, high biased. *1 LCS/LCSD RPD exceeds control limits. 4 MS, MSD: The analyte present in the original sample is greater than 4 times the matrix spike concentration; therefore, control limits are not applicable. E Result exceeded calibration range. F1 MS and/or MSD recovery exceeds control limits. F2 MS/MSD RPD exceeds control limits J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Pittsburgh Page 10 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Accreditation/Certification Summary Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Laboratory: Eurofins Pittsburgh Unless otherwise noted, all analytes for this laboratory were covered under each accreditation/certification below. Authority Program Identification Number Expiration Date Utah NELAP PA001462019-8 05-31-22 The following analytes are included in this report, but the laboratory is not certified by the governing authority. This list may include analytes for which the agency does not offer certification. Analysis Method Prep Method Matrix Analyte EPA 8260D Water Chlorodibromomethane Laboratory: Eurofins Pensacola The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date Florida NELAP E81010 06-30-22 Eurofins Pittsburgh Page 11 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Sample Summary Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Lab Sample ID Client Sample ID Matrix Collected Received 180-133728-1 MW-5 Water 02/14/22 14:00 02/16/22 09:45 180-133728-2 MW-5I Water 02/14/22 14:50 02/16/22 09:45 180-133728-3 MW-20I Water 02/14/22 11:40 02/16/22 09:45 180-133728-4 MW-17I Water 02/14/22 13:46 02/16/22 09:45 180-133728-5 MW-11I Water 02/14/22 14:45 02/16/22 09:45 180-133728-6 MW-11I-C Water 02/14/22 15:30 02/16/22 09:45 180-133790-1 B-1 Water 02/15/22 13:15 02/16/22 09:45 180-133790-2 B-1-a Water 02/15/22 13:15 02/16/22 09:45 180-133790-3 B-3 Water 02/15/22 12:15 02/16/22 09:45 180-133790-4 MW-2 Water 02/15/22 14:00 02/16/22 09:45 180-133790-5 MW-2I Water 02/15/22 12:40 02/16/22 09:45 180-133790-6 MW-2A Water 02/15/22 11:45 02/16/22 09:45 180-133790-7 MW-3 Water 02/15/22 15:00 02/16/22 09:45 180-133790-8 MW-3I Water 02/15/22 09:25 02/16/22 09:45 180-133790-9 MW-7 Water 02/15/22 10:35 02/16/22 09:45 180-133790-10 MW-7I Water 02/15/22 11:10 02/16/22 09:45 180-133790-11 MW-9 Water 02/15/22 14:30 02/16/22 09:45 180-133790-12 MW-9I Water 02/15/22 15:00 02/16/22 09:45 180-133790-13 MW-11 Water 02/15/22 09:45 02/16/22 09:45 180-133790-14 MW-11-C Water 02/15/22 15:30 02/16/22 09:45 180-133839-1 MW-4 Water 02/16/22 12:40 02/17/22 09:30 180-133839-2 MW-4I Water 02/16/22 11:45 02/17/22 09:30 180-133839-3 MW-6 Water 02/16/22 11:25 02/17/22 09:30 180-133839-4 MW-6I Water 02/16/22 12:00 02/17/22 09:30 180-133839-5 MW-8 Water 02/16/22 10:30 02/17/22 09:30 180-133839-6 MW-8-a Water 02/16/22 10:30 02/17/22 09:30 180-133839-7 MW-12 Water 02/16/22 13:40 02/17/22 09:30 180-133839-8 MW-12I Water 02/16/22 14:35 02/17/22 09:30 180-133839-9 MW-13 Water 02/16/22 13:50 02/17/22 09:30 180-133839-10 MW-13I Water 02/16/22 14:40 02/17/22 09:30 180-133839-11 MW-16 Water 02/16/22 10:15 02/17/22 09:30 180-133839-12 MW-16-c Water 02/16/22 15:00 02/17/22 09:30 180-133991-1 MW-10 Water 02/17/22 09:45 02/21/22 09:30 180-133991-2 MW-10I Water 02/17/22 10:20 02/21/22 09:30 180-133991-3 MW-14 Water 02/17/22 09:40 02/21/22 09:30 180-133991-4 MW-14-C Water 02/17/22 13:15 02/21/22 09:30 180-133991-5 MW-14I Water 02/17/22 10:35 02/21/22 09:30 180-133991-6 MW-15 Water 02/17/22 11:35 02/21/22 09:30 180-133991-7 MW-15I Water 02/17/22 12:20 02/21/22 09:30 180-133991-8 MW-18I Water 02/17/22 11:50 02/21/22 09:30 180-133991-9 MW-19I Water 02/17/22 12:50 02/21/22 09:30 Eurofins Pittsburgh Page 12 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Method Summary Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method Method Description LaboratoryProtocol SW8468260DVolatile Organic Compounds by GC/MS TAL PEN SW846EPA 8260D Volatile Organic Compounds by GC/MS TAL PIT SW8465030CPurge and Trap TAL PEN SW8465030CPurge and Trap TAL PIT Protocol References: SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: TAL PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 TAL PIT = Eurofins Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL (412)963-7058 Eurofins Pittsburgh Page 13 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Client Sample ID: MW-5 Lab Sample ID: 180-133728-1 Matrix: WaterDate Collected: 02/14/22 14:00 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 15:001 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 388935 02/21/22 17:39 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-5I Lab Sample ID: 180-133728-2 Matrix: WaterDate Collected: 02/14/22 14:50 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 16:401 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 388935 02/21/22 18:04 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-20I Lab Sample ID: 180-133728-3 Matrix: WaterDate Collected: 02/14/22 11:40 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 17:051 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 388935 02/21/22 18:29 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-17I Lab Sample ID: 180-133728-4 Matrix: WaterDate Collected: 02/14/22 13:46 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 17:301 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 388935 02/21/22 18:54 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-11I Lab Sample ID: 180-133728-5 Matrix: WaterDate Collected: 02/14/22 14:45 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 17:551 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 388935 02/21/22 17:14 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Eurofins Pittsburgh Page 14 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Client Sample ID: MW-11I-C Lab Sample ID: 180-133728-6 Matrix: WaterDate Collected: 02/14/22 15:30 Date Received: 02/16/22 09:45 Analysis 8260D BPO02/28/22 12:401 TAL PEN568080 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: CH_TAN Analysis 8260D SIM 1 567699 02/24/22 18:20 CAR TAL PENTotal/NA 5 mL 5 mL CurieInstrument ID: Client Sample ID: B-1 Lab Sample ID: 180-133790-1 Matrix: WaterDate Collected: 02/15/22 13:15 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 18:451 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389102 02/22/22 14:41 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: B-1-a Lab Sample ID: 180-133790-2 Matrix: WaterDate Collected: 02/15/22 13:15 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 19:101 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389102 02/22/22 15:07 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: B-3 Lab Sample ID: 180-133790-3 Matrix: WaterDate Collected: 02/15/22 12:15 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 19:351 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389102 02/22/22 15:38 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-2 Lab Sample ID: 180-133790-4 Matrix: WaterDate Collected: 02/15/22 14:00 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 20:001 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389102 02/22/22 16:04 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Eurofins Pittsburgh Page 15 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Client Sample ID: MW-2I Lab Sample ID: 180-133790-5 Matrix: WaterDate Collected: 02/15/22 12:40 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 20:251 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389102 02/22/22 16:29 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-2A Lab Sample ID: 180-133790-6 Matrix: WaterDate Collected: 02/15/22 11:45 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 20:501 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389226 02/23/22 12:06 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-3 Lab Sample ID: 180-133790-7 Matrix: WaterDate Collected: 02/15/22 15:00 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 21:151 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389226 02/23/22 12:32 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-3I Lab Sample ID: 180-133790-8 Matrix: WaterDate Collected: 02/15/22 09:25 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 21:401 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389226 02/23/22 13:04 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-7 Lab Sample ID: 180-133790-9 Matrix: WaterDate Collected: 02/15/22 10:35 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 22:051 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389226 02/23/22 13:28 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Eurofins Pittsburgh Page 16 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Client Sample ID: MW-7I Lab Sample ID: 180-133790-10 Matrix: WaterDate Collected: 02/15/22 11:10 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 22:301 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389226 02/23/22 13:54 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-9 Lab Sample ID: 180-133790-11 Matrix: WaterDate Collected: 02/15/22 14:30 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 22:551 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389226 02/23/22 14:19 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Analysis EPA 8260D DL 5 389226 02/23/22 16:47 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-9I Lab Sample ID: 180-133790-12 Matrix: WaterDate Collected: 02/15/22 15:00 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 23:201 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389226 02/23/22 14:44 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Analysis EPA 8260D DL 100 389226 02/23/22 16:23 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-11 Lab Sample ID: 180-133790-13 Matrix: WaterDate Collected: 02/15/22 09:45 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/24/22 23:451 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389226 02/23/22 15:59 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-11-C Lab Sample ID: 180-133790-14 Matrix: WaterDate Collected: 02/15/22 15:30 Date Received: 02/16/22 09:45 Analysis 8260D CAR02/24/22 18:181 TAL PEN567694 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: CH_LARS Eurofins Pittsburgh Page 17 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Client Sample ID: MW-11-C Lab Sample ID: 180-133790-14 Matrix: WaterDate Collected: 02/15/22 15:30 Date Received: 02/16/22 09:45 Analysis 8260D SIM CAR02/25/22 00:101 TAL PEN567699 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW-4 Lab Sample ID: 180-133839-1 Matrix: WaterDate Collected: 02/16/22 12:40 Date Received: 02/17/22 09:30 Analysis 8260D SIM CAR02/25/22 12:451 TAL PEN567866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389414 02/24/22 13:20 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-4I Lab Sample ID: 180-133839-2 Matrix: WaterDate Collected: 02/16/22 11:45 Date Received: 02/17/22 09:30 Analysis 8260D SIM CAR02/25/22 14:251 TAL PEN567866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389414 02/24/22 13:45 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-6 Lab Sample ID: 180-133839-3 Matrix: WaterDate Collected: 02/16/22 11:25 Date Received: 02/17/22 09:30 Analysis 8260D SIM CAR02/25/22 14:501 TAL PEN567866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389414 02/24/22 14:10 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-6I Lab Sample ID: 180-133839-4 Matrix: WaterDate Collected: 02/16/22 12:00 Date Received: 02/17/22 09:30 Analysis 8260D SIM CAR02/25/22 15:151 TAL PEN567866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389414 02/24/22 14:35 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Eurofins Pittsburgh Page 18 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Client Sample ID: MW-8 Lab Sample ID: 180-133839-5 Matrix: WaterDate Collected: 02/16/22 10:30 Date Received: 02/17/22 09:30 Analysis 8260D SIM CAR02/25/22 15:401 TAL PEN567866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389414 02/24/22 15:00 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D DL 10 389531 02/25/22 13:45 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-8-a Lab Sample ID: 180-133839-6 Matrix: WaterDate Collected: 02/16/22 10:30 Date Received: 02/17/22 09:30 Analysis 8260D SIM CAR02/25/22 16:061 TAL PEN567866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389414 02/24/22 15:26 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D DL 10 389531 02/25/22 14:10 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-12 Lab Sample ID: 180-133839-7 Matrix: WaterDate Collected: 02/16/22 13:40 Date Received: 02/17/22 09:30 Analysis 8260D SIM CAR02/25/22 16:311 TAL PEN567866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389531 02/25/22 13:20 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-12I Lab Sample ID: 180-133839-8 Matrix: WaterDate Collected: 02/16/22 14:35 Date Received: 02/17/22 09:30 Analysis 8260D SIM CAR02/25/22 16:561 TAL PEN567866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D DL 10 389531 02/25/22 14:35 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D 1 389738 02/28/22 19:03 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Eurofins Pittsburgh Page 19 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Client Sample ID: MW-13 Lab Sample ID: 180-133839-9 Matrix: WaterDate Collected: 02/16/22 13:50 Date Received: 02/17/22 09:30 Analysis 8260D SIM CAR02/25/22 17:211 TAL PEN567866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389414 02/24/22 17:31 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D DL 10 389531 02/25/22 15:00 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-13I Lab Sample ID: 180-133839-10 Matrix: WaterDate Collected: 02/16/22 14:40 Date Received: 02/17/22 09:30 Analysis 8260D SIM CAR02/25/22 17:461 TAL PEN567866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D DL 10 389531 02/25/22 15:26 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D 1 389738 02/28/22 19:27 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-16 Lab Sample ID: 180-133839-11 Matrix: WaterDate Collected: 02/16/22 10:15 Date Received: 02/17/22 09:30 Analysis 8260D SIM CAR02/25/22 18:111 TAL PEN567866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389414 02/24/22 18:22 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D DL 10 389531 02/25/22 15:51 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-16-c Lab Sample ID: 180-133839-12 Matrix: WaterDate Collected: 02/16/22 15:00 Date Received: 02/17/22 09:30 Analysis 8260D SIM CAR02/25/22 18:361 TAL PEN567866 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389659 02/26/22 12:10 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Eurofins Pittsburgh Page 20 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Client Sample ID: MW-10 Lab Sample ID: 180-133991-1 Matrix: WaterDate Collected: 02/17/22 09:45 Date Received: 02/21/22 09:30 Analysis 8260D SIM CAR02/28/22 16:551 TAL PEN568096 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389659 02/26/22 15:56 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D DL 40 389738 02/28/22 13:20 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-10I Lab Sample ID: 180-133991-2 Matrix: WaterDate Collected: 02/17/22 10:20 Date Received: 02/21/22 09:30 Analysis 8260D SIM CAR02/28/22 17:201 TAL PEN568096 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389659 02/26/22 15:31 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D DL 100 389738 02/28/22 14:51 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-14 Lab Sample ID: 180-133991-3 Matrix: WaterDate Collected: 02/17/22 09:40 Date Received: 02/21/22 09:30 Analysis 8260D SIM CAR02/28/22 17:451 TAL PEN568096 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389738 02/28/22 12:24 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-14-C Lab Sample ID: 180-133991-4 Matrix: WaterDate Collected: 02/17/22 13:15 Date Received: 02/21/22 09:30 Analysis 8260D SIM CAR02/28/22 13:351 TAL PEN568096 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389659 02/26/22 11:45 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-14I Lab Sample ID: 180-133991-5 Matrix: WaterDate Collected: 02/17/22 10:35 Date Received: 02/21/22 09:30 Analysis 8260D SIM CAR02/28/22 18:101 TAL PEN568096 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Eurofins Pittsburgh Page 21 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Client Sample ID: MW-14I Lab Sample ID: 180-133991-5 Matrix: WaterDate Collected: 02/17/22 10:35 Date Received: 02/21/22 09:30 Analysis EPA 8260D APD02/26/22 13:251 TAL PIT389659 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis EPA 8260D DL 20 389738 02/28/22 13:45 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D DL2 2 389872 03/01/22 18:17 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-15 Lab Sample ID: 180-133991-6 Matrix: WaterDate Collected: 02/17/22 11:35 Date Received: 02/21/22 09:30 Analysis 8260D SIM CAR02/28/22 18:351 TAL PEN568096 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389531 02/25/22 17:32 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D RA 1 389738 02/28/22 14:25 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-15I Lab Sample ID: 180-133991-7 Matrix: WaterDate Collected: 02/17/22 12:20 Date Received: 02/21/22 09:30 Analysis 8260D SIM CAR02/28/22 14:001 TAL PEN568096 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389738 02/28/22 12:49 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-18I Lab Sample ID: 180-133991-8 Matrix: WaterDate Collected: 02/17/22 11:50 Date Received: 02/21/22 09:30 Analysis 8260D SIM CAR02/28/22 14:251 TAL PEN568096 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 389659 02/26/22 12:35 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Client Sample ID: MW-19I Lab Sample ID: 180-133991-9 Matrix: WaterDate Collected: 02/17/22 12:50 Date Received: 02/21/22 09:30 Analysis 8260D SIM CAR02/28/22 19:001 TAL PEN568096 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Eurofins Pittsburgh Page 22 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-133728-1 Project/Site: EDO Western Corp. Client Sample ID: MW-19I Lab Sample ID: 180-133991-9 Matrix: WaterDate Collected: 02/17/22 12:50 Date Received: 02/21/22 09:30 Analysis EPA 8260D APD02/26/22 16:221 TAL PIT389659 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis EPA 8260D DL 10 389873 03/01/22 12:48 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Laboratory References: TAL PEN = Eurofins Pensacola, 3355 McLemore Drive, Pensacola, FL 32514, TEL (850)474-1001 TAL PIT = Eurofins Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL (412)963-7058 Analyst References: Lab: TAL PEN Batch Type: Analysis BPO = Brian O'Neill CAR = Cassie Rodriguez Lab: TAL PIT Batch Type: Analysis APD = Aaron DeLeo J1T = Jianwu Tang Eurofins Pittsburgh Page 23 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133728-1Client Sample ID: MW-5 Matrix: WaterDate Collected: 02/14/22 14:00 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 15:00 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 112 50 -150 02/24/22 15:00 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)79 02/24/22 15:00 150-150 4-Bromofluorobenzene 97 02/24/22 15:00 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/21/22 17:39 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/21/22 17:39 1BenzeneND 5.00 ug/L 02/21/22 17:39 1ChlorobromomethaneND 5.00 ug/L 02/21/22 17:39 1DichlorobromomethaneND 5.00 ug/L 02/21/22 17:39 1BromoformND 5.00 ug/L 02/21/22 17:39 1BromomethaneND 5.00 ug/L 02/21/22 17:39 12-Butanone (MEK)ND 5.00 ug/L 02/21/22 17:39 1Carbon disulfide ND 5.00 ug/L 02/21/22 17:39 1Carbon tetrachloride ND 5.00 ug/L 02/21/22 17:39 1ChlorobenzeneND *- 5.00 ug/L 02/21/22 17:39 1ChlorodibromomethaneND 5.00 ug/L 02/21/22 17:39 1ChloroethaneND 5.00 ug/L 02/21/22 17:39 1ChloroformND 5.00 ug/L 02/21/22 17:39 1ChloromethaneND 5.00 ug/L 02/21/22 17:39 1CyclohexaneND 5.00 ug/L 02/21/22 17:39 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/21/22 17:39 11,2-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 17:39 11,3-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 17:39 11,4-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 17:39 1DichlorodifluoromethaneND 5.00 ug/L 02/21/22 17:39 11,1-Dichloroethane ND 5.00 ug/L 02/21/22 17:39 11,2-Dichloroethane ND 5.00 ug/L 02/21/22 17:39 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/21/22 17:39 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/21/22 17:39 11,1-Dichloroethene ND *1 5.00 ug/L 02/21/22 17:39 11,2-Dichloropropane ND 5.00 ug/L 02/21/22 17:39 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/21/22 17:39 1trans-1,3-Dichloropropene ND 1000 ug/L 02/21/22 17:39 11,4-Dioxane ND *- *1 5.00 ug/L 02/21/22 17:39 1EthylbenzeneND 5.00 ug/L 02/21/22 17:39 12-Hexanone ND 5.00 ug/L 02/21/22 17:39 1IsopropylbenzeneND 25.0 ug/L 02/21/22 17:39 1Methyl acetate ND *1 5.00 ug/L 02/21/22 17:39 1MethylcyclohexaneND 5.00 ug/L 02/21/22 17:39 1Methylene Chloride ND *+ 5.00 ug/L 02/21/22 17:39 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/21/22 17:39 1Methyl tert-butyl ether ND 5.00 ug/L 02/21/22 17:39 1StyreneND 5.00 ug/L 02/21/22 17:39 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/21/22 17:39 1TetrachloroetheneND 5.00 ug/L 02/21/22 17:39 1TolueneND Eurofins Pittsburgh Page 24 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133728-1Client Sample ID: MW-5 Matrix: WaterDate Collected: 02/14/22 14:00 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2,3-Trichlorobenzene ND 5.00 ug/L 02/21/22 17:39 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/21/22 17:39 11,2,4-Trichlorobenzene ND *- 5.00 ug/L 02/21/22 17:39 11,1,1-Trichloroethane ND 5.00 ug/L 02/21/22 17:39 11,1,2-Trichloroethane ND 5.00 ug/L 02/21/22 17:39 1TrichloroetheneND 5.00 ug/L 02/21/22 17:39 1TrichlorofluoromethaneND 5.00 ug/L 02/21/22 17:39 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/21/22 17:39 1Vinyl chloride ND 5.00 ug/L 02/21/22 17:39 1m-Xylene & p-Xylene ND 5.00 ug/L 02/21/22 17:39 1o-Xylene ND 5.00 ug/L 02/21/22 17:39 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)83 52 -151 02/21/22 17:39 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)91 02/21/22 17:39 153-124 4-Bromofluorobenzene (Surr)80 02/21/22 17:39 149-118 Dibromofluoromethane (Surr)92 02/21/22 17:39 160-132 Lab Sample ID: 180-133728-2Client Sample ID: MW-5I Matrix: WaterDate Collected: 02/14/22 14:50 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 16:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 115 50 -150 02/24/22 16:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)79 02/24/22 16:40 150-150 4-Bromofluorobenzene 96 02/24/22 16:40 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/21/22 18:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/21/22 18:04 1BenzeneND 5.00 ug/L 02/21/22 18:04 1ChlorobromomethaneND 5.00 ug/L 02/21/22 18:04 1DichlorobromomethaneND 5.00 ug/L 02/21/22 18:04 1BromoformND 5.00 ug/L 02/21/22 18:04 1BromomethaneND 5.00 ug/L 02/21/22 18:04 12-Butanone (MEK)ND 5.00 ug/L 02/21/22 18:04 1Carbon disulfide ND 5.00 ug/L 02/21/22 18:04 1Carbon tetrachloride ND 5.00 ug/L 02/21/22 18:04 1ChlorobenzeneND *- 5.00 ug/L 02/21/22 18:04 1ChlorodibromomethaneND 5.00 ug/L 02/21/22 18:04 1ChloroethaneND 5.00 ug/L 02/21/22 18:04 1ChloroformND 5.00 ug/L 02/21/22 18:04 1ChloromethaneND 5.00 ug/L 02/21/22 18:04 1CyclohexaneND 5.00 ug/L 02/21/22 18:04 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/21/22 18:04 11,2-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 18:04 11,3-Dichlorobenzene ND *- *1 Eurofins Pittsburgh Page 25 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133728-2Client Sample ID: MW-5I Matrix: WaterDate Collected: 02/14/22 14:50 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,4-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 18:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/21/22 18:04 1DichlorodifluoromethaneND 5.00 ug/L 02/21/22 18:04 11,1-Dichloroethane ND 5.00 ug/L 02/21/22 18:04 11,2-Dichloroethane ND 5.00 ug/L 02/21/22 18:04 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/21/22 18:04 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/21/22 18:04 11,1-Dichloroethene ND *1 5.00 ug/L 02/21/22 18:04 11,2-Dichloropropane ND 5.00 ug/L 02/21/22 18:04 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/21/22 18:04 1trans-1,3-Dichloropropene ND 1000 ug/L 02/21/22 18:04 11,4-Dioxane ND *- *1 5.00 ug/L 02/21/22 18:04 1EthylbenzeneND 5.00 ug/L 02/21/22 18:04 12-Hexanone ND 5.00 ug/L 02/21/22 18:04 1IsopropylbenzeneND 25.0 ug/L 02/21/22 18:04 1Methyl acetate ND *1 5.00 ug/L 02/21/22 18:04 1MethylcyclohexaneND 5.00 ug/L 02/21/22 18:04 1Methylene Chloride ND *+ 5.00 ug/L 02/21/22 18:04 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/21/22 18:04 1Methyl tert-butyl ether ND 5.00 ug/L 02/21/22 18:04 1StyreneND 5.00 ug/L 02/21/22 18:04 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/21/22 18:04 1TetrachloroetheneND 5.00 ug/L 02/21/22 18:04 1TolueneND 5.00 ug/L 02/21/22 18:04 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/21/22 18:04 11,2,4-Trichlorobenzene ND *- 5.00 ug/L 02/21/22 18:04 11,1,1-Trichloroethane ND 5.00 ug/L 02/21/22 18:04 11,1,2-Trichloroethane ND 5.00 ug/L 02/21/22 18:04 1TrichloroetheneND 5.00 ug/L 02/21/22 18:04 1TrichlorofluoromethaneND 5.00 ug/L 02/21/22 18:04 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/21/22 18:04 1Vinyl chloride ND 5.00 ug/L 02/21/22 18:04 1m-Xylene & p-Xylene ND 5.00 ug/L 02/21/22 18:04 1o-Xylene ND 5.00 ug/L 02/21/22 18:04 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)93 52 -151 02/21/22 18:04 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)91 02/21/22 18:04 153-124 4-Bromofluorobenzene (Surr)95 02/21/22 18:04 149-118 Dibromofluoromethane (Surr)78 02/21/22 18:04 160-132 Lab Sample ID: 180-133728-3Client Sample ID: MW-20I Matrix: WaterDate Collected: 02/14/22 11:40 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 0.680 J 1.00 0.300 ug/L 02/24/22 17:05 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins Pittsburgh Page 26 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133728-3Client Sample ID: MW-20I Matrix: WaterDate Collected: 02/14/22 11:40 Date Received: 02/16/22 09:45 Dibromofluoromethane 116 50 -150 02/24/22 17:05 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)79 02/24/22 17:05 150-150 4-Bromofluorobenzene 95 02/24/22 17:05 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/21/22 18:29 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/21/22 18:29 1BenzeneND 5.00 ug/L 02/21/22 18:29 1ChlorobromomethaneND 5.00 ug/L 02/21/22 18:29 1DichlorobromomethaneND 5.00 ug/L 02/21/22 18:29 1BromoformND 5.00 ug/L 02/21/22 18:29 1BromomethaneND 5.00 ug/L 02/21/22 18:29 12-Butanone (MEK)ND 5.00 ug/L 02/21/22 18:29 1Carbon disulfide ND 5.00 ug/L 02/21/22 18:29 1Carbon tetrachloride ND 5.00 ug/L 02/21/22 18:29 1ChlorobenzeneND *- 5.00 ug/L 02/21/22 18:29 1ChlorodibromomethaneND 5.00 ug/L 02/21/22 18:29 1ChloroethaneND 5.00 ug/L 02/21/22 18:29 1ChloroformND 5.00 ug/L 02/21/22 18:29 1ChloromethaneND 5.00 ug/L 02/21/22 18:29 1CyclohexaneND 5.00 ug/L 02/21/22 18:29 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/21/22 18:29 11,2-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 18:29 11,3-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 18:29 11,4-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 18:29 1DichlorodifluoromethaneND 5.00 ug/L 02/21/22 18:29 11,1-Dichloroethane ND 5.00 ug/L 02/21/22 18:29 11,2-Dichloroethane ND 5.00 ug/L 02/21/22 18:29 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/21/22 18:29 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/21/22 18:29 11,1-Dichloroethene ND *1 5.00 ug/L 02/21/22 18:29 11,2-Dichloropropane ND 5.00 ug/L 02/21/22 18:29 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/21/22 18:29 1trans-1,3-Dichloropropene ND 1000 ug/L 02/21/22 18:29 11,4-Dioxane ND *- *1 5.00 ug/L 02/21/22 18:29 1EthylbenzeneND 5.00 ug/L 02/21/22 18:29 12-Hexanone ND 5.00 ug/L 02/21/22 18:29 1IsopropylbenzeneND 25.0 ug/L 02/21/22 18:29 1Methyl acetate ND *1 5.00 ug/L 02/21/22 18:29 1MethylcyclohexaneND 5.00 ug/L 02/21/22 18:29 1Methylene Chloride ND *+ 5.00 ug/L 02/21/22 18:29 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/21/22 18:29 1Methyl tert-butyl ether ND 5.00 ug/L 02/21/22 18:29 1StyreneND 5.00 ug/L 02/21/22 18:29 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/21/22 18:29 1TetrachloroetheneND 5.00 ug/L 02/21/22 18:29 1TolueneND 5.00 ug/L 02/21/22 18:29 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/21/22 18:29 11,2,4-Trichlorobenzene ND *- 5.00 ug/L 02/21/22 18:29 11,1,1-Trichloroethane ND Eurofins Pittsburgh Page 27 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133728-3Client Sample ID: MW-20I Matrix: WaterDate Collected: 02/14/22 11:40 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,1,2-Trichloroethane ND 5.00 ug/L 02/21/22 18:29 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/21/22 18:29 1TrichloroetheneND 5.00 ug/L 02/21/22 18:29 1TrichlorofluoromethaneND 5.00 ug/L 02/21/22 18:29 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/21/22 18:29 1Vinyl chloride ND 5.00 ug/L 02/21/22 18:29 1m-Xylene & p-Xylene ND 5.00 ug/L 02/21/22 18:29 1o-Xylene ND 5.00 ug/L 02/21/22 18:29 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)101 52 -151 02/21/22 18:29 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 02/21/22 18:29 153-124 4-Bromofluorobenzene (Surr)83 02/21/22 18:29 149-118 Dibromofluoromethane (Surr)99 02/21/22 18:29 160-132 Lab Sample ID: 180-133728-4Client Sample ID: MW-17I Matrix: WaterDate Collected: 02/14/22 13:46 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 1.58 1.00 0.300 ug/L 02/24/22 17:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 117 50 -150 02/24/22 17:30 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)80 02/24/22 17:30 150-150 4-Bromofluorobenzene 96 02/24/22 17:30 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/21/22 18:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/21/22 18:54 1BenzeneND 5.00 ug/L 02/21/22 18:54 1ChlorobromomethaneND 5.00 ug/L 02/21/22 18:54 1DichlorobromomethaneND 5.00 ug/L 02/21/22 18:54 1BromoformND 5.00 ug/L 02/21/22 18:54 1BromomethaneND 5.00 ug/L 02/21/22 18:54 12-Butanone (MEK)ND 5.00 ug/L 02/21/22 18:54 1Carbon disulfide ND 5.00 ug/L 02/21/22 18:54 1Carbon tetrachloride ND 5.00 ug/L 02/21/22 18:54 1ChlorobenzeneND *- 5.00 ug/L 02/21/22 18:54 1ChlorodibromomethaneND 5.00 ug/L 02/21/22 18:54 1ChloroethaneND 5.00 ug/L 02/21/22 18:54 1ChloroformND 5.00 ug/L 02/21/22 18:54 1ChloromethaneND 5.00 ug/L 02/21/22 18:54 1CyclohexaneND 5.00 ug/L 02/21/22 18:54 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/21/22 18:54 11,2-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 18:54 11,3-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 18:54 11,4-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 18:54 1DichlorodifluoromethaneND 5.00 ug/L 02/21/22 18:54 11,1-Dichloroethane ND Eurofins Pittsburgh Page 28 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133728-4Client Sample ID: MW-17I Matrix: WaterDate Collected: 02/14/22 13:46 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2-Dichloroethane ND 5.00 ug/L 02/21/22 18:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/21/22 18:54 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/21/22 18:54 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/21/22 18:54 11,1-Dichloroethene ND *1 5.00 ug/L 02/21/22 18:54 11,2-Dichloropropane ND 5.00 ug/L 02/21/22 18:54 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/21/22 18:54 1trans-1,3-Dichloropropene ND 1000 ug/L 02/21/22 18:54 11,4-Dioxane ND *- *1 5.00 ug/L 02/21/22 18:54 1EthylbenzeneND 5.00 ug/L 02/21/22 18:54 12-Hexanone ND 5.00 ug/L 02/21/22 18:54 1IsopropylbenzeneND 25.0 ug/L 02/21/22 18:54 1Methyl acetate ND *1 5.00 ug/L 02/21/22 18:54 1MethylcyclohexaneND 5.00 ug/L 02/21/22 18:54 1Methylene Chloride ND *+ 5.00 ug/L 02/21/22 18:54 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/21/22 18:54 1Methyl tert-butyl ether ND 5.00 ug/L 02/21/22 18:54 1StyreneND 5.00 ug/L 02/21/22 18:54 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/21/22 18:54 1TetrachloroetheneND 5.00 ug/L 02/21/22 18:54 1TolueneND 5.00 ug/L 02/21/22 18:54 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/21/22 18:54 11,2,4-Trichlorobenzene ND *- 5.00 ug/L 02/21/22 18:54 11,1,1-Trichloroethane ND 5.00 ug/L 02/21/22 18:54 11,1,2-Trichloroethane ND 5.00 ug/L 02/21/22 18:54 1TrichloroetheneND 5.00 ug/L 02/21/22 18:54 1TrichlorofluoromethaneND 5.00 ug/L 02/21/22 18:54 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/21/22 18:54 1Vinyl chloride ND 5.00 ug/L 02/21/22 18:54 1m-Xylene & p-Xylene ND 5.00 ug/L 02/21/22 18:54 1o-Xylene ND 5.00 ug/L 02/21/22 18:54 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)85 52 -151 02/21/22 18:54 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)88 02/21/22 18:54 153-124 4-Bromofluorobenzene (Surr)92 02/21/22 18:54 149-118 Dibromofluoromethane (Surr)89 02/21/22 18:54 160-132 Lab Sample ID: 180-133728-5Client Sample ID: MW-11I Matrix: WaterDate Collected: 02/14/22 14:45 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 17:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 116 50 -150 02/24/22 17:55 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)78 02/24/22 17:55 150-150 4-Bromofluorobenzene 95 02/24/22 17:55 150-150 Eurofins Pittsburgh Page 29 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133728-5Client Sample ID: MW-11I Matrix: WaterDate Collected: 02/14/22 14:45 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/21/22 17:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/21/22 17:14 1BenzeneND 5.00 ug/L 02/21/22 17:14 1ChlorobromomethaneND 5.00 ug/L 02/21/22 17:14 1DichlorobromomethaneND 5.00 ug/L 02/21/22 17:14 1BromoformND 5.00 ug/L 02/21/22 17:14 1BromomethaneND 5.00 ug/L 02/21/22 17:14 12-Butanone (MEK)ND 5.00 ug/L 02/21/22 17:14 1Carbon disulfide ND 5.00 ug/L 02/21/22 17:14 1Carbon tetrachloride ND 5.00 ug/L 02/21/22 17:14 1ChlorobenzeneND *- 5.00 ug/L 02/21/22 17:14 1ChlorodibromomethaneND 5.00 ug/L 02/21/22 17:14 1ChloroethaneND 5.00 ug/L 02/21/22 17:14 1ChloroformND 5.00 ug/L 02/21/22 17:14 1ChloromethaneND 5.00 ug/L 02/21/22 17:14 1CyclohexaneND 5.00 ug/L 02/21/22 17:14 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/21/22 17:14 11,2-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 17:14 11,3-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 17:14 11,4-Dichlorobenzene ND *- *1 5.00 ug/L 02/21/22 17:14 1DichlorodifluoromethaneND 5.00 ug/L 02/21/22 17:14 11,1-Dichloroethane ND 5.00 ug/L 02/21/22 17:14 11,2-Dichloroethane ND 5.00 ug/L 02/21/22 17:14 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/21/22 17:14 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/21/22 17:14 11,1-Dichloroethene ND *1 5.00 ug/L 02/21/22 17:14 11,2-Dichloropropane ND 5.00 ug/L 02/21/22 17:14 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/21/22 17:14 1trans-1,3-Dichloropropene ND 1000 ug/L 02/21/22 17:14 11,4-Dioxane ND *- *1 5.00 ug/L 02/21/22 17:14 1EthylbenzeneND 5.00 ug/L 02/21/22 17:14 12-Hexanone ND 5.00 ug/L 02/21/22 17:14 1IsopropylbenzeneND 25.0 ug/L 02/21/22 17:14 1Methyl acetate ND *1 5.00 ug/L 02/21/22 17:14 1MethylcyclohexaneND 5.00 ug/L 02/21/22 17:14 1Methylene Chloride ND *+ 5.00 ug/L 02/21/22 17:14 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/21/22 17:14 1Methyl tert-butyl ether 5.15 5.00 ug/L 02/21/22 17:14 1StyreneND 5.00 ug/L 02/21/22 17:14 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/21/22 17:14 1TetrachloroetheneND 5.00 ug/L 02/21/22 17:14 1TolueneND 5.00 ug/L 02/21/22 17:14 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/21/22 17:14 11,2,4-Trichlorobenzene ND *- 5.00 ug/L 02/21/22 17:14 11,1,1-Trichloroethane ND 5.00 ug/L 02/21/22 17:14 11,1,2-Trichloroethane ND 5.00 ug/L 02/21/22 17:14 1TrichloroetheneND 5.00 ug/L 02/21/22 17:14 1TrichlorofluoromethaneND 5.00 ug/L 02/21/22 17:14 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/21/22 17:14 1Vinyl chloride ND Eurofins Pittsburgh Page 30 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133728-5Client Sample ID: MW-11I Matrix: WaterDate Collected: 02/14/22 14:45 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL m-Xylene & p-Xylene ND 5.00 ug/L 02/21/22 17:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/21/22 17:14 1o-Xylene ND 5.00 ug/L 02/21/22 17:14 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)83 52 -151 02/21/22 17:14 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)94 02/21/22 17:14 153-124 4-Bromofluorobenzene (Surr)85 02/21/22 17:14 149-118 Dibromofluoromethane (Surr)80 02/21/22 17:14 160-132 Lab Sample ID: 180-133728-6Client Sample ID: MW-11I-C Matrix: WaterDate Collected: 02/14/22 15:30 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 18:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 118 50 -150 02/24/22 18:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)79 02/24/22 18:20 150-150 4-Bromofluorobenzene 95 02/24/22 18:20 150-150 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL 1,1,1-Trichloroethane ND 1.00 ug/L 02/28/22 12:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 02/28/22 12:40 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 02/28/22 12:40 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/28/22 12:40 11,1,2-Trichloroethane ND 1.00 ug/L 02/28/22 12:40 11,1-Dichloroethane ND 1.00 ug/L 02/28/22 12:40 11,1-Dichloroethene ND 1.00 ug/L 02/28/22 12:40 11,2,3-Trichlorobenzene ND 1.00 ug/L 02/28/22 12:40 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/28/22 12:40 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 02/28/22 12:40 11,2-Dichlorobenzene ND 1.00 ug/L 02/28/22 12:40 11,2-Dichloroethane ND 1.00 ug/L 02/28/22 12:40 11,2-Dichloropropane ND 1.00 ug/L 02/28/22 12:40 11,3-Dichlorobenzene ND 1.00 ug/L 02/28/22 12:40 11,4-Dichlorobenzene ND 400 ug/L 02/28/22 12:40 11,4-Dioxane ND 25.0 ug/L 02/28/22 12:40 12-Butanone (MEK)ND 25.0 ug/L 02/28/22 12:40 12-Hexanone ND 25.0 ug/L 02/28/22 12:40 14-Methyl-2-pentanone (MIBK)ND 25.0 ug/L 02/28/22 12:40 1AcetoneND 1.00 ug/L 02/28/22 12:40 1BenzeneND 5.00 ug/L 02/28/22 12:40 1BromoformND 1.00 ug/L 02/28/22 12:40 1BromomethaneND 1.00 ug/L 02/28/22 12:40 1Carbon disulfide ND 1.00 ug/L 02/28/22 12:40 1Carbon tetrachloride ND 1.00 ug/L 02/28/22 12:40 1ChlorobenzeneND 1.00 ug/L 02/28/22 12:40 1ChlorobromomethaneND Eurofins Pittsburgh Page 31 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133728-6Client Sample ID: MW-11I-C Matrix: WaterDate Collected: 02/14/22 15:30 Date Received: 02/16/22 09:45 Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Chlorodibromomethane ND 1.00 ug/L 02/28/22 12:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 02/28/22 12:40 1ChloroethaneND 1.00 ug/L 02/28/22 12:40 1ChloroformND 1.00 ug/L 02/28/22 12:40 1ChloromethaneND 1.00 ug/L 02/28/22 12:40 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/28/22 12:40 1cis-1,3-Dichloropropene ND 1.00 ug/L 02/28/22 12:40 1CyclohexaneND 1.00 ug/L 02/28/22 12:40 1DichlorobromomethaneND 1.00 ug/L 02/28/22 12:40 1DichlorodifluoromethaneND 1.00 ug/L 02/28/22 12:40 1EthylbenzeneND 1.00 ug/L 02/28/22 12:40 11,2-Dibromoethane ND 1.00 ug/L 02/28/22 12:40 1IsopropylbenzeneND 5.00 ug/L 02/28/22 12:40 1Methyl acetate ND 1.00 ug/L 02/28/22 12:40 1Methyl tert-butyl ether ND 1.00 ug/L 02/28/22 12:40 1MethylcyclohexaneND 5.00 ug/L 02/28/22 12:40 1Methylene Chloride 5.42 5.00 ug/L 02/28/22 12:40 1m-Xylene & p-Xylene ND 5.00 ug/L 02/28/22 12:40 1o-Xylene ND 1.00 ug/L 02/28/22 12:40 1StyreneND 1.00 ug/L 02/28/22 12:40 1TetrachloroetheneND 1.00 ug/L 02/28/22 12:40 1TolueneND 1.00 ug/L 02/28/22 12:40 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/28/22 12:40 1trans-1,3-Dichloropropene ND 1.00 ug/L 02/28/22 12:40 1TrichloroetheneND 1.00 ug/L 02/28/22 12:40 1TrichlorofluoromethaneND 1.00 ug/L 02/28/22 12:40 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)97 67 -134 02/28/22 12:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene 99 02/28/22 12:40 172-119 Dibromofluoromethane 103 02/28/22 12:40 175-126 Toluene-d8 (Surr)98 02/28/22 12:40 164-132 Lab Sample ID: 180-133790-1Client Sample ID: B-1 Matrix: WaterDate Collected: 02/15/22 13:15 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 7.68 1.00 0.300 ug/L 02/24/22 18:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 118 50 -150 02/24/22 18:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)78 02/24/22 18:45 150-150 4-Bromofluorobenzene 94 02/24/22 18:45 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND F1 20.0 ug/L 02/22/22 14:41 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/22/22 14:41 1BenzeneND 5.00 ug/L 02/22/22 14:41 1ChlorobromomethaneND Eurofins Pittsburgh Page 32 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-1Client Sample ID: B-1 Matrix: WaterDate Collected: 02/15/22 13:15 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Dichlorobromomethane ND 5.00 ug/L 02/22/22 14:41 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/22/22 14:41 1BromoformND 5.00 ug/L 02/22/22 14:41 1BromomethaneND 5.00 ug/L 02/22/22 14:41 12-Butanone (MEK)ND 5.00 ug/L 02/22/22 14:41 1Carbon disulfide ND 5.00 ug/L 02/22/22 14:41 1Carbon tetrachloride ND 5.00 ug/L 02/22/22 14:41 1ChlorobenzeneND 5.00 ug/L 02/22/22 14:41 1ChlorodibromomethaneND 5.00 ug/L 02/22/22 14:41 1ChloroethaneND 5.00 ug/L 02/22/22 14:41 1ChloroformND 5.00 ug/L 02/22/22 14:41 1ChloromethaneND 5.00 ug/L 02/22/22 14:41 1CyclohexaneND 5.00 ug/L 02/22/22 14:41 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/22/22 14:41 11,2-Dichlorobenzene ND F1 5.00 ug/L 02/22/22 14:41 11,3-Dichlorobenzene ND 5.00 ug/L 02/22/22 14:41 11,4-Dichlorobenzene ND 5.00 ug/L 02/22/22 14:41 1DichlorodifluoromethaneND 5.00 ug/L 02/22/22 14:41 11,1-Dichloroethane ND 5.00 ug/L 02/22/22 14:41 11,2-Dichloroethane ND 5.00 ug/L 02/22/22 14:41 1cis-1,2-Dichloroethene 6.12 5.00 ug/L 02/22/22 14:41 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/22/22 14:41 11,1-Dichloroethene ND 5.00 ug/L 02/22/22 14:41 11,2-Dichloropropane ND 5.00 ug/L 02/22/22 14:41 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/22/22 14:41 1trans-1,3-Dichloropropene ND 1000 ug/L 02/22/22 14:41 11,4-Dioxane ND 5.00 ug/L 02/22/22 14:41 1EthylbenzeneND 5.00 ug/L 02/22/22 14:41 12-Hexanone ND 5.00 ug/L 02/22/22 14:41 1IsopropylbenzeneND 25.0 ug/L 02/22/22 14:41 1Methyl acetate ND 5.00 ug/L 02/22/22 14:41 1MethylcyclohexaneND 5.00 ug/L 02/22/22 14:41 1Methylene Chloride ND 5.00 ug/L 02/22/22 14:41 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/22/22 14:41 1Methyl tert-butyl ether ND 5.00 ug/L 02/22/22 14:41 1StyreneND 5.00 ug/L 02/22/22 14:41 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/22/22 14:41 1TetrachloroetheneND 5.00 ug/L 02/22/22 14:41 1TolueneND 5.00 ug/L 02/22/22 14:41 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/22/22 14:41 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/22/22 14:41 11,1,1-Trichloroethane ND 5.00 ug/L 02/22/22 14:41 11,1,2-Trichloroethane ND 5.00 ug/L 02/22/22 14:41 1TrichloroetheneND 5.00 ug/L 02/22/22 14:41 1TrichlorofluoromethaneND 5.00 ug/L 02/22/22 14:41 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/22/22 14:41 1Vinyl chloride ND 5.00 ug/L 02/22/22 14:41 1m-Xylene & p-Xylene ND 5.00 ug/L 02/22/22 14:41 1o-Xylene ND 5.00 ug/L 02/22/22 14:41 11,2-Dibromoethane ND Eurofins Pittsburgh Page 33 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-1Client Sample ID: B-1 Matrix: WaterDate Collected: 02/15/22 13:15 Date Received: 02/16/22 09:45 1,2-Dichloroethane-d4 (Surr)89 52 -151 02/22/22 14:41 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)90 02/22/22 14:41 153-124 4-Bromofluorobenzene (Surr)94 02/22/22 14:41 149-118 Dibromofluoromethane (Surr)87 02/22/22 14:41 160-132 Lab Sample ID: 180-133790-2Client Sample ID: B-1-a Matrix: WaterDate Collected: 02/15/22 13:15 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 7.96 1.00 0.300 ug/L 02/24/22 19:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 118 50 -150 02/24/22 19:10 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)79 02/24/22 19:10 150-150 4-Bromofluorobenzene 95 02/24/22 19:10 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/22/22 15:07 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/22/22 15:07 1BenzeneND 5.00 ug/L 02/22/22 15:07 1ChlorobromomethaneND 5.00 ug/L 02/22/22 15:07 1DichlorobromomethaneND 5.00 ug/L 02/22/22 15:07 1BromoformND 5.00 ug/L 02/22/22 15:07 1BromomethaneND 5.00 ug/L 02/22/22 15:07 12-Butanone (MEK)ND 5.00 ug/L 02/22/22 15:07 1Carbon disulfide ND 5.00 ug/L 02/22/22 15:07 1Carbon tetrachloride ND 5.00 ug/L 02/22/22 15:07 1ChlorobenzeneND 5.00 ug/L 02/22/22 15:07 1ChlorodibromomethaneND 5.00 ug/L 02/22/22 15:07 1ChloroethaneND 5.00 ug/L 02/22/22 15:07 1ChloroformND 5.00 ug/L 02/22/22 15:07 1ChloromethaneND 5.00 ug/L 02/22/22 15:07 1CyclohexaneND 5.00 ug/L 02/22/22 15:07 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/22/22 15:07 11,2-Dichlorobenzene ND 5.00 ug/L 02/22/22 15:07 11,3-Dichlorobenzene ND 5.00 ug/L 02/22/22 15:07 11,4-Dichlorobenzene ND 5.00 ug/L 02/22/22 15:07 1DichlorodifluoromethaneND 5.00 ug/L 02/22/22 15:07 11,1-Dichloroethane ND 5.00 ug/L 02/22/22 15:07 11,2-Dichloroethane ND 5.00 ug/L 02/22/22 15:07 1cis-1,2-Dichloroethene 5.82 5.00 ug/L 02/22/22 15:07 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/22/22 15:07 11,1-Dichloroethene ND 5.00 ug/L 02/22/22 15:07 11,2-Dichloropropane ND 5.00 ug/L 02/22/22 15:07 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/22/22 15:07 1trans-1,3-Dichloropropene ND 1000 ug/L 02/22/22 15:07 11,4-Dioxane ND 5.00 ug/L 02/22/22 15:07 1EthylbenzeneND 5.00 ug/L 02/22/22 15:07 12-Hexanone ND Eurofins Pittsburgh Page 34 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-2Client Sample ID: B-1-a Matrix: WaterDate Collected: 02/15/22 13:15 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Isopropylbenzene ND 5.00 ug/L 02/22/22 15:07 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 25.0 ug/L 02/22/22 15:07 1Methyl acetate ND 5.00 ug/L 02/22/22 15:07 1MethylcyclohexaneND 5.00 ug/L 02/22/22 15:07 1Methylene Chloride ND 5.00 ug/L 02/22/22 15:07 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/22/22 15:07 1Methyl tert-butyl ether ND 5.00 ug/L 02/22/22 15:07 1StyreneND 5.00 ug/L 02/22/22 15:07 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/22/22 15:07 1TetrachloroetheneND 5.00 ug/L 02/22/22 15:07 1TolueneND 5.00 ug/L 02/22/22 15:07 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/22/22 15:07 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/22/22 15:07 11,1,1-Trichloroethane ND 5.00 ug/L 02/22/22 15:07 11,1,2-Trichloroethane ND 5.00 ug/L 02/22/22 15:07 1TrichloroetheneND 5.00 ug/L 02/22/22 15:07 1TrichlorofluoromethaneND 5.00 ug/L 02/22/22 15:07 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/22/22 15:07 1Vinyl chloride ND 5.00 ug/L 02/22/22 15:07 1m-Xylene & p-Xylene ND 5.00 ug/L 02/22/22 15:07 1o-Xylene ND 5.00 ug/L 02/22/22 15:07 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)84 52 -151 02/22/22 15:07 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)90 02/22/22 15:07 153-124 4-Bromofluorobenzene (Surr)76 02/22/22 15:07 149-118 Dibromofluoromethane (Surr)83 02/22/22 15:07 160-132 Lab Sample ID: 180-133790-3Client Sample ID: B-3 Matrix: WaterDate Collected: 02/15/22 12:15 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 19:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 114 50 -150 02/24/22 19:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)79 02/24/22 19:35 150-150 4-Bromofluorobenzene 95 02/24/22 19:35 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/22/22 15:38 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/22/22 15:38 1BenzeneND 5.00 ug/L 02/22/22 15:38 1ChlorobromomethaneND 5.00 ug/L 02/22/22 15:38 1DichlorobromomethaneND 5.00 ug/L 02/22/22 15:38 1BromoformND 5.00 ug/L 02/22/22 15:38 1BromomethaneND 5.00 ug/L 02/22/22 15:38 12-Butanone (MEK)ND 5.00 ug/L 02/22/22 15:38 1Carbon disulfide ND Eurofins Pittsburgh Page 35 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-3Client Sample ID: B-3 Matrix: WaterDate Collected: 02/15/22 12:15 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Carbon tetrachloride ND 5.00 ug/L 02/22/22 15:38 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/22/22 15:38 1ChlorobenzeneND 5.00 ug/L 02/22/22 15:38 1ChlorodibromomethaneND 5.00 ug/L 02/22/22 15:38 1ChloroethaneND 5.00 ug/L 02/22/22 15:38 1ChloroformND 5.00 ug/L 02/22/22 15:38 1ChloromethaneND 5.00 ug/L 02/22/22 15:38 1CyclohexaneND 5.00 ug/L 02/22/22 15:38 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/22/22 15:38 11,2-Dichlorobenzene ND 5.00 ug/L 02/22/22 15:38 11,3-Dichlorobenzene ND 5.00 ug/L 02/22/22 15:38 11,4-Dichlorobenzene ND 5.00 ug/L 02/22/22 15:38 1DichlorodifluoromethaneND 5.00 ug/L 02/22/22 15:38 11,1-Dichloroethane ND 5.00 ug/L 02/22/22 15:38 11,2-Dichloroethane ND 5.00 ug/L 02/22/22 15:38 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/22/22 15:38 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/22/22 15:38 11,1-Dichloroethene ND 5.00 ug/L 02/22/22 15:38 11,2-Dichloropropane ND 5.00 ug/L 02/22/22 15:38 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/22/22 15:38 1trans-1,3-Dichloropropene ND 1000 ug/L 02/22/22 15:38 11,4-Dioxane ND 5.00 ug/L 02/22/22 15:38 1EthylbenzeneND 5.00 ug/L 02/22/22 15:38 12-Hexanone ND 5.00 ug/L 02/22/22 15:38 1IsopropylbenzeneND 25.0 ug/L 02/22/22 15:38 1Methyl acetate ND 5.00 ug/L 02/22/22 15:38 1MethylcyclohexaneND 5.00 ug/L 02/22/22 15:38 1Methylene Chloride ND 5.00 ug/L 02/22/22 15:38 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/22/22 15:38 1Methyl tert-butyl ether ND 5.00 ug/L 02/22/22 15:38 1StyreneND 5.00 ug/L 02/22/22 15:38 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/22/22 15:38 1TetrachloroetheneND 5.00 ug/L 02/22/22 15:38 1TolueneND 5.00 ug/L 02/22/22 15:38 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/22/22 15:38 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/22/22 15:38 11,1,1-Trichloroethane ND 5.00 ug/L 02/22/22 15:38 11,1,2-Trichloroethane ND 5.00 ug/L 02/22/22 15:38 1TrichloroetheneND 5.00 ug/L 02/22/22 15:38 1TrichlorofluoromethaneND 5.00 ug/L 02/22/22 15:38 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/22/22 15:38 1Vinyl chloride ND 5.00 ug/L 02/22/22 15:38 1m-Xylene & p-Xylene ND 5.00 ug/L 02/22/22 15:38 1o-Xylene ND 5.00 ug/L 02/22/22 15:38 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)83 52 -151 02/22/22 15:38 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)95 02/22/22 15:38 153-124 4-Bromofluorobenzene (Surr)73 02/22/22 15:38 149-118 Dibromofluoromethane (Surr)84 02/22/22 15:38 160-132 Eurofins Pittsburgh Page 36 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-4Client Sample ID: MW-2 Matrix: WaterDate Collected: 02/15/22 14:00 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 20:00 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 116 50 -150 02/24/22 20:00 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)79 02/24/22 20:00 150-150 4-Bromofluorobenzene 96 02/24/22 20:00 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/22/22 16:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/22/22 16:04 1BenzeneND 5.00 ug/L 02/22/22 16:04 1ChlorobromomethaneND 5.00 ug/L 02/22/22 16:04 1DichlorobromomethaneND 5.00 ug/L 02/22/22 16:04 1BromoformND 5.00 ug/L 02/22/22 16:04 1BromomethaneND 5.00 ug/L 02/22/22 16:04 12-Butanone (MEK)ND 5.00 ug/L 02/22/22 16:04 1Carbon disulfide ND 5.00 ug/L 02/22/22 16:04 1Carbon tetrachloride ND 5.00 ug/L 02/22/22 16:04 1ChlorobenzeneND 5.00 ug/L 02/22/22 16:04 1ChlorodibromomethaneND 5.00 ug/L 02/22/22 16:04 1ChloroethaneND 5.00 ug/L 02/22/22 16:04 1ChloroformND 5.00 ug/L 02/22/22 16:04 1ChloromethaneND 5.00 ug/L 02/22/22 16:04 1CyclohexaneND 5.00 ug/L 02/22/22 16:04 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/22/22 16:04 11,2-Dichlorobenzene ND 5.00 ug/L 02/22/22 16:04 11,3-Dichlorobenzene ND 5.00 ug/L 02/22/22 16:04 11,4-Dichlorobenzene ND 5.00 ug/L 02/22/22 16:04 1DichlorodifluoromethaneND 5.00 ug/L 02/22/22 16:04 11,1-Dichloroethane ND 5.00 ug/L 02/22/22 16:04 11,2-Dichloroethane ND 5.00 ug/L 02/22/22 16:04 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/22/22 16:04 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/22/22 16:04 11,1-Dichloroethene ND 5.00 ug/L 02/22/22 16:04 11,2-Dichloropropane ND 5.00 ug/L 02/22/22 16:04 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/22/22 16:04 1trans-1,3-Dichloropropene ND 1000 ug/L 02/22/22 16:04 11,4-Dioxane ND 5.00 ug/L 02/22/22 16:04 1EthylbenzeneND 5.00 ug/L 02/22/22 16:04 12-Hexanone ND 5.00 ug/L 02/22/22 16:04 1IsopropylbenzeneND 25.0 ug/L 02/22/22 16:04 1Methyl acetate ND 5.00 ug/L 02/22/22 16:04 1MethylcyclohexaneND 5.00 ug/L 02/22/22 16:04 1Methylene Chloride ND 5.00 ug/L 02/22/22 16:04 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/22/22 16:04 1Methyl tert-butyl ether ND 5.00 ug/L 02/22/22 16:04 1StyreneND 5.00 ug/L 02/22/22 16:04 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/22/22 16:04 1TetrachloroetheneND 5.00 ug/L 02/22/22 16:04 1TolueneND Eurofins Pittsburgh Page 37 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-4Client Sample ID: MW-2 Matrix: WaterDate Collected: 02/15/22 14:00 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2,3-Trichlorobenzene ND 5.00 ug/L 02/22/22 16:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/22/22 16:04 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/22/22 16:04 11,1,1-Trichloroethane ND 5.00 ug/L 02/22/22 16:04 11,1,2-Trichloroethane ND 5.00 ug/L 02/22/22 16:04 1TrichloroetheneND 5.00 ug/L 02/22/22 16:04 1TrichlorofluoromethaneND 5.00 ug/L 02/22/22 16:04 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/22/22 16:04 1Vinyl chloride ND 5.00 ug/L 02/22/22 16:04 1m-Xylene & p-Xylene ND 5.00 ug/L 02/22/22 16:04 1o-Xylene ND 5.00 ug/L 02/22/22 16:04 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)79 52 -151 02/22/22 16:04 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)84 02/22/22 16:04 153-124 4-Bromofluorobenzene (Surr)67 02/22/22 16:04 149-118 Dibromofluoromethane (Surr)79 02/22/22 16:04 160-132 Lab Sample ID: 180-133790-5Client Sample ID: MW-2I Matrix: WaterDate Collected: 02/15/22 12:40 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 20:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 117 50 -150 02/24/22 20:25 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)78 02/24/22 20:25 150-150 4-Bromofluorobenzene 95 02/24/22 20:25 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/22/22 16:29 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/22/22 16:29 1BenzeneND 5.00 ug/L 02/22/22 16:29 1ChlorobromomethaneND 5.00 ug/L 02/22/22 16:29 1DichlorobromomethaneND 5.00 ug/L 02/22/22 16:29 1BromoformND 5.00 ug/L 02/22/22 16:29 1BromomethaneND 5.00 ug/L 02/22/22 16:29 12-Butanone (MEK)ND 5.00 ug/L 02/22/22 16:29 1Carbon disulfide ND 5.00 ug/L 02/22/22 16:29 1Carbon tetrachloride ND 5.00 ug/L 02/22/22 16:29 1ChlorobenzeneND 5.00 ug/L 02/22/22 16:29 1ChlorodibromomethaneND 5.00 ug/L 02/22/22 16:29 1ChloroethaneND 5.00 ug/L 02/22/22 16:29 1ChloroformND 5.00 ug/L 02/22/22 16:29 1ChloromethaneND 5.00 ug/L 02/22/22 16:29 1CyclohexaneND 5.00 ug/L 02/22/22 16:29 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/22/22 16:29 11,2-Dichlorobenzene ND 5.00 ug/L 02/22/22 16:29 11,3-Dichlorobenzene ND Eurofins Pittsburgh Page 38 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-5Client Sample ID: MW-2I Matrix: WaterDate Collected: 02/15/22 12:40 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,4-Dichlorobenzene ND 5.00 ug/L 02/22/22 16:29 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/22/22 16:29 1DichlorodifluoromethaneND 5.00 ug/L 02/22/22 16:29 11,1-Dichloroethane ND 5.00 ug/L 02/22/22 16:29 11,2-Dichloroethane ND 5.00 ug/L 02/22/22 16:29 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/22/22 16:29 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/22/22 16:29 11,1-Dichloroethene ND 5.00 ug/L 02/22/22 16:29 11,2-Dichloropropane ND 5.00 ug/L 02/22/22 16:29 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/22/22 16:29 1trans-1,3-Dichloropropene ND 1000 ug/L 02/22/22 16:29 11,4-Dioxane ND 5.00 ug/L 02/22/22 16:29 1EthylbenzeneND 5.00 ug/L 02/22/22 16:29 12-Hexanone ND 5.00 ug/L 02/22/22 16:29 1IsopropylbenzeneND 25.0 ug/L 02/22/22 16:29 1Methyl acetate ND 5.00 ug/L 02/22/22 16:29 1MethylcyclohexaneND 5.00 ug/L 02/22/22 16:29 1Methylene Chloride ND 5.00 ug/L 02/22/22 16:29 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/22/22 16:29 1Methyl tert-butyl ether ND 5.00 ug/L 02/22/22 16:29 1StyreneND 5.00 ug/L 02/22/22 16:29 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/22/22 16:29 1TetrachloroetheneND 5.00 ug/L 02/22/22 16:29 1TolueneND 5.00 ug/L 02/22/22 16:29 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/22/22 16:29 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/22/22 16:29 11,1,1-Trichloroethane ND 5.00 ug/L 02/22/22 16:29 11,1,2-Trichloroethane ND 5.00 ug/L 02/22/22 16:29 1TrichloroetheneND 5.00 ug/L 02/22/22 16:29 1TrichlorofluoromethaneND 5.00 ug/L 02/22/22 16:29 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/22/22 16:29 1Vinyl chloride ND 5.00 ug/L 02/22/22 16:29 1m-Xylene & p-Xylene ND 5.00 ug/L 02/22/22 16:29 1o-Xylene ND 5.00 ug/L 02/22/22 16:29 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)95 52 -151 02/22/22 16:29 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 02/22/22 16:29 153-124 4-Bromofluorobenzene (Surr)87 02/22/22 16:29 149-118 Dibromofluoromethane (Surr)95 02/22/22 16:29 160-132 Lab Sample ID: 180-133790-6Client Sample ID: MW-2A Matrix: WaterDate Collected: 02/15/22 11:45 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 20:50 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins Pittsburgh Page 39 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-6Client Sample ID: MW-2A Matrix: WaterDate Collected: 02/15/22 11:45 Date Received: 02/16/22 09:45 Dibromofluoromethane 114 50 -150 02/24/22 20:50 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)78 02/24/22 20:50 150-150 4-Bromofluorobenzene 95 02/24/22 20:50 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/23/22 12:06 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 12:06 1BenzeneND 5.00 ug/L 02/23/22 12:06 1ChlorobromomethaneND 5.00 ug/L 02/23/22 12:06 1DichlorobromomethaneND 5.00 ug/L 02/23/22 12:06 1BromoformND 5.00 ug/L 02/23/22 12:06 1BromomethaneND 5.00 ug/L 02/23/22 12:06 12-Butanone (MEK)ND 5.00 ug/L 02/23/22 12:06 1Carbon disulfide ND 5.00 ug/L 02/23/22 12:06 1Carbon tetrachloride ND 5.00 ug/L 02/23/22 12:06 1ChlorobenzeneND 5.00 ug/L 02/23/22 12:06 1ChlorodibromomethaneND 5.00 ug/L 02/23/22 12:06 1ChloroethaneND 5.00 ug/L 02/23/22 12:06 1ChloroformND 5.00 ug/L 02/23/22 12:06 1ChloromethaneND 5.00 ug/L 02/23/22 12:06 1CyclohexaneND 5.00 ug/L 02/23/22 12:06 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/23/22 12:06 11,2-Dichlorobenzene ND 5.00 ug/L 02/23/22 12:06 11,3-Dichlorobenzene ND 5.00 ug/L 02/23/22 12:06 11,4-Dichlorobenzene ND 5.00 ug/L 02/23/22 12:06 1DichlorodifluoromethaneND 5.00 ug/L 02/23/22 12:06 11,1-Dichloroethane ND 5.00 ug/L 02/23/22 12:06 11,2-Dichloroethane ND 5.00 ug/L 02/23/22 12:06 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 12:06 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 12:06 11,1-Dichloroethene ND 5.00 ug/L 02/23/22 12:06 11,2-Dichloropropane ND 5.00 ug/L 02/23/22 12:06 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/23/22 12:06 1trans-1,3-Dichloropropene ND 1000 ug/L 02/23/22 12:06 11,4-Dioxane ND 5.00 ug/L 02/23/22 12:06 1EthylbenzeneND 5.00 ug/L 02/23/22 12:06 12-Hexanone ND 5.00 ug/L 02/23/22 12:06 1IsopropylbenzeneND 25.0 ug/L 02/23/22 12:06 1Methyl acetate ND 5.00 ug/L 02/23/22 12:06 1MethylcyclohexaneND 5.00 ug/L 02/23/22 12:06 1Methylene Chloride ND 5.00 ug/L 02/23/22 12:06 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/23/22 12:06 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/22 12:06 1StyreneND 5.00 ug/L 02/23/22 12:06 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/23/22 12:06 1TetrachloroetheneND 5.00 ug/L 02/23/22 12:06 1TolueneND 5.00 ug/L 02/23/22 12:06 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/23/22 12:06 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/23/22 12:06 11,1,1-Trichloroethane ND Eurofins Pittsburgh Page 40 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-6Client Sample ID: MW-2A Matrix: WaterDate Collected: 02/15/22 11:45 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,1,2-Trichloroethane ND 5.00 ug/L 02/23/22 12:06 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 12:06 1TrichloroetheneND 5.00 ug/L 02/23/22 12:06 1TrichlorofluoromethaneND 5.00 ug/L 02/23/22 12:06 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/23/22 12:06 1Vinyl chloride ND 5.00 ug/L 02/23/22 12:06 1m-Xylene & p-Xylene ND 5.00 ug/L 02/23/22 12:06 1o-Xylene ND 5.00 ug/L 02/23/22 12:06 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)98 52 -151 02/23/22 12:06 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 02/23/22 12:06 153-124 4-Bromofluorobenzene (Surr)84 02/23/22 12:06 149-118 Dibromofluoromethane (Surr)102 02/23/22 12:06 160-132 Lab Sample ID: 180-133790-7Client Sample ID: MW-3 Matrix: WaterDate Collected: 02/15/22 15:00 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 21:15 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 118 50 -150 02/24/22 21:15 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)78 02/24/22 21:15 150-150 4-Bromofluorobenzene 94 02/24/22 21:15 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/23/22 12:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 12:32 1BenzeneND 5.00 ug/L 02/23/22 12:32 1ChlorobromomethaneND 5.00 ug/L 02/23/22 12:32 1DichlorobromomethaneND 5.00 ug/L 02/23/22 12:32 1BromoformND 5.00 ug/L 02/23/22 12:32 1BromomethaneND 5.00 ug/L 02/23/22 12:32 12-Butanone (MEK)ND 5.00 ug/L 02/23/22 12:32 1Carbon disulfide ND 5.00 ug/L 02/23/22 12:32 1Carbon tetrachloride ND 5.00 ug/L 02/23/22 12:32 1ChlorobenzeneND 5.00 ug/L 02/23/22 12:32 1ChlorodibromomethaneND 5.00 ug/L 02/23/22 12:32 1ChloroethaneND 5.00 ug/L 02/23/22 12:32 1ChloroformND 5.00 ug/L 02/23/22 12:32 1ChloromethaneND 5.00 ug/L 02/23/22 12:32 1CyclohexaneND 5.00 ug/L 02/23/22 12:32 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/23/22 12:32 11,2-Dichlorobenzene ND 5.00 ug/L 02/23/22 12:32 11,3-Dichlorobenzene ND 5.00 ug/L 02/23/22 12:32 11,4-Dichlorobenzene ND 5.00 ug/L 02/23/22 12:32 1DichlorodifluoromethaneND 5.00 ug/L 02/23/22 12:32 11,1-Dichloroethane ND Eurofins Pittsburgh Page 41 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-7Client Sample ID: MW-3 Matrix: WaterDate Collected: 02/15/22 15:00 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2-Dichloroethane ND 5.00 ug/L 02/23/22 12:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 12:32 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 12:32 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 12:32 11,1-Dichloroethene ND 5.00 ug/L 02/23/22 12:32 11,2-Dichloropropane ND 5.00 ug/L 02/23/22 12:32 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/23/22 12:32 1trans-1,3-Dichloropropene ND 1000 ug/L 02/23/22 12:32 11,4-Dioxane ND 5.00 ug/L 02/23/22 12:32 1EthylbenzeneND 5.00 ug/L 02/23/22 12:32 12-Hexanone ND 5.00 ug/L 02/23/22 12:32 1IsopropylbenzeneND 25.0 ug/L 02/23/22 12:32 1Methyl acetate ND 5.00 ug/L 02/23/22 12:32 1MethylcyclohexaneND 5.00 ug/L 02/23/22 12:32 1Methylene Chloride ND 5.00 ug/L 02/23/22 12:32 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/23/22 12:32 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/22 12:32 1StyreneND 5.00 ug/L 02/23/22 12:32 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/23/22 12:32 1TetrachloroetheneND 5.00 ug/L 02/23/22 12:32 1TolueneND 5.00 ug/L 02/23/22 12:32 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/23/22 12:32 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/23/22 12:32 11,1,1-Trichloroethane ND 5.00 ug/L 02/23/22 12:32 11,1,2-Trichloroethane ND 5.00 ug/L 02/23/22 12:32 1TrichloroetheneND 5.00 ug/L 02/23/22 12:32 1TrichlorofluoromethaneND 5.00 ug/L 02/23/22 12:32 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/23/22 12:32 1Vinyl chloride ND 5.00 ug/L 02/23/22 12:32 1m-Xylene & p-Xylene ND 5.00 ug/L 02/23/22 12:32 1o-Xylene ND 5.00 ug/L 02/23/22 12:32 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)103 52 -151 02/23/22 12:32 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)99 02/23/22 12:32 153-124 4-Bromofluorobenzene (Surr)76 02/23/22 12:32 149-118 Dibromofluoromethane (Surr)105 02/23/22 12:32 160-132 Lab Sample ID: 180-133790-8Client Sample ID: MW-3I Matrix: WaterDate Collected: 02/15/22 09:25 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 21:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 119 50 -150 02/24/22 21:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)77 02/24/22 21:40 150-150 4-Bromofluorobenzene 94 02/24/22 21:40 150-150 Eurofins Pittsburgh Page 42 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-8Client Sample ID: MW-3I Matrix: WaterDate Collected: 02/15/22 09:25 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/23/22 13:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 13:04 1BenzeneND 5.00 ug/L 02/23/22 13:04 1ChlorobromomethaneND 5.00 ug/L 02/23/22 13:04 1DichlorobromomethaneND 5.00 ug/L 02/23/22 13:04 1BromoformND 5.00 ug/L 02/23/22 13:04 1BromomethaneND 5.00 ug/L 02/23/22 13:04 12-Butanone (MEK)ND 5.00 ug/L 02/23/22 13:04 1Carbon disulfide ND 5.00 ug/L 02/23/22 13:04 1Carbon tetrachloride ND 5.00 ug/L 02/23/22 13:04 1ChlorobenzeneND 5.00 ug/L 02/23/22 13:04 1ChlorodibromomethaneND 5.00 ug/L 02/23/22 13:04 1ChloroethaneND 5.00 ug/L 02/23/22 13:04 1ChloroformND 5.00 ug/L 02/23/22 13:04 1ChloromethaneND 5.00 ug/L 02/23/22 13:04 1CyclohexaneND 5.00 ug/L 02/23/22 13:04 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/23/22 13:04 11,2-Dichlorobenzene ND 5.00 ug/L 02/23/22 13:04 11,3-Dichlorobenzene ND 5.00 ug/L 02/23/22 13:04 11,4-Dichlorobenzene ND 5.00 ug/L 02/23/22 13:04 1DichlorodifluoromethaneND 5.00 ug/L 02/23/22 13:04 11,1-Dichloroethane ND 5.00 ug/L 02/23/22 13:04 11,2-Dichloroethane ND 5.00 ug/L 02/23/22 13:04 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 13:04 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 13:04 11,1-Dichloroethene ND 5.00 ug/L 02/23/22 13:04 11,2-Dichloropropane ND 5.00 ug/L 02/23/22 13:04 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/23/22 13:04 1trans-1,3-Dichloropropene ND 1000 ug/L 02/23/22 13:04 11,4-Dioxane ND 5.00 ug/L 02/23/22 13:04 1EthylbenzeneND 5.00 ug/L 02/23/22 13:04 12-Hexanone ND 5.00 ug/L 02/23/22 13:04 1IsopropylbenzeneND 25.0 ug/L 02/23/22 13:04 1Methyl acetate ND 5.00 ug/L 02/23/22 13:04 1MethylcyclohexaneND 5.00 ug/L 02/23/22 13:04 1Methylene Chloride ND 5.00 ug/L 02/23/22 13:04 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/23/22 13:04 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/22 13:04 1StyreneND 5.00 ug/L 02/23/22 13:04 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/23/22 13:04 1TetrachloroetheneND 5.00 ug/L 02/23/22 13:04 1TolueneND 5.00 ug/L 02/23/22 13:04 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/23/22 13:04 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/23/22 13:04 11,1,1-Trichloroethane ND 5.00 ug/L 02/23/22 13:04 11,1,2-Trichloroethane ND 5.00 ug/L 02/23/22 13:04 1TrichloroetheneND 5.00 ug/L 02/23/22 13:04 1TrichlorofluoromethaneND 5.00 ug/L 02/23/22 13:04 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/23/22 13:04 1Vinyl chloride ND Eurofins Pittsburgh Page 43 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-8Client Sample ID: MW-3I Matrix: WaterDate Collected: 02/15/22 09:25 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL m-Xylene & p-Xylene ND 5.00 ug/L 02/23/22 13:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 13:04 1o-Xylene ND 5.00 ug/L 02/23/22 13:04 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)100 52 -151 02/23/22 13:04 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)95 02/23/22 13:04 153-124 4-Bromofluorobenzene (Surr)69 02/23/22 13:04 149-118 Dibromofluoromethane (Surr)99 02/23/22 13:04 160-132 Lab Sample ID: 180-133790-9Client Sample ID: MW-7 Matrix: WaterDate Collected: 02/15/22 10:35 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 22:05 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 119 50 -150 02/24/22 22:05 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)78 02/24/22 22:05 150-150 4-Bromofluorobenzene 94 02/24/22 22:05 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/23/22 13:28 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 13:28 1BenzeneND 5.00 ug/L 02/23/22 13:28 1ChlorobromomethaneND 5.00 ug/L 02/23/22 13:28 1DichlorobromomethaneND 5.00 ug/L 02/23/22 13:28 1BromoformND 5.00 ug/L 02/23/22 13:28 1BromomethaneND 5.00 ug/L 02/23/22 13:28 12-Butanone (MEK)ND 5.00 ug/L 02/23/22 13:28 1Carbon disulfide ND 5.00 ug/L 02/23/22 13:28 1Carbon tetrachloride ND 5.00 ug/L 02/23/22 13:28 1ChlorobenzeneND 5.00 ug/L 02/23/22 13:28 1ChlorodibromomethaneND 5.00 ug/L 02/23/22 13:28 1ChloroethaneND 5.00 ug/L 02/23/22 13:28 1ChloroformND 5.00 ug/L 02/23/22 13:28 1ChloromethaneND 5.00 ug/L 02/23/22 13:28 1CyclohexaneND 5.00 ug/L 02/23/22 13:28 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/23/22 13:28 11,2-Dichlorobenzene ND 5.00 ug/L 02/23/22 13:28 11,3-Dichlorobenzene ND 5.00 ug/L 02/23/22 13:28 11,4-Dichlorobenzene ND 5.00 ug/L 02/23/22 13:28 1DichlorodifluoromethaneND 5.00 ug/L 02/23/22 13:28 11,1-Dichloroethane ND 5.00 ug/L 02/23/22 13:28 11,2-Dichloroethane ND 5.00 ug/L 02/23/22 13:28 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 13:28 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 13:28 11,1-Dichloroethene ND 5.00 ug/L 02/23/22 13:28 11,2-Dichloropropane ND Eurofins Pittsburgh Page 44 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-9Client Sample ID: MW-7 Matrix: WaterDate Collected: 02/15/22 10:35 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL cis-1,3-Dichloropropene ND 5.00 ug/L 02/23/22 13:28 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 13:28 1trans-1,3-Dichloropropene ND 1000 ug/L 02/23/22 13:28 11,4-Dioxane ND 5.00 ug/L 02/23/22 13:28 1EthylbenzeneND 5.00 ug/L 02/23/22 13:28 12-Hexanone ND 5.00 ug/L 02/23/22 13:28 1IsopropylbenzeneND 25.0 ug/L 02/23/22 13:28 1Methyl acetate ND 5.00 ug/L 02/23/22 13:28 1MethylcyclohexaneND 5.00 ug/L 02/23/22 13:28 1Methylene Chloride ND 5.00 ug/L 02/23/22 13:28 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/23/22 13:28 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/22 13:28 1StyreneND 5.00 ug/L 02/23/22 13:28 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/23/22 13:28 1TetrachloroetheneND 5.00 ug/L 02/23/22 13:28 1TolueneND 5.00 ug/L 02/23/22 13:28 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/23/22 13:28 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/23/22 13:28 11,1,1-Trichloroethane ND 5.00 ug/L 02/23/22 13:28 11,1,2-Trichloroethane ND 5.00 ug/L 02/23/22 13:28 1TrichloroetheneND 5.00 ug/L 02/23/22 13:28 1TrichlorofluoromethaneND 5.00 ug/L 02/23/22 13:28 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/23/22 13:28 1Vinyl chloride ND 5.00 ug/L 02/23/22 13:28 1m-Xylene & p-Xylene ND 5.00 ug/L 02/23/22 13:28 1o-Xylene ND 5.00 ug/L 02/23/22 13:28 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)104 52 -151 02/23/22 13:28 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)92 02/23/22 13:28 153-124 4-Bromofluorobenzene (Surr)84 02/23/22 13:28 149-118 Dibromofluoromethane (Surr)102 02/23/22 13:28 160-132 Lab Sample ID: 180-133790-10Client Sample ID: MW-7I Matrix: WaterDate Collected: 02/15/22 11:10 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 22:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 115 50 -150 02/24/22 22:30 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)78 02/24/22 22:30 150-150 4-Bromofluorobenzene 94 02/24/22 22:30 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/23/22 13:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 13:54 1BenzeneND 5.00 ug/L 02/23/22 13:54 1ChlorobromomethaneND Eurofins Pittsburgh Page 45 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-10Client Sample ID: MW-7I Matrix: WaterDate Collected: 02/15/22 11:10 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Dichlorobromomethane ND 5.00 ug/L 02/23/22 13:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 13:54 1BromoformND 5.00 ug/L 02/23/22 13:54 1BromomethaneND 5.00 ug/L 02/23/22 13:54 12-Butanone (MEK)ND 5.00 ug/L 02/23/22 13:54 1Carbon disulfide ND 5.00 ug/L 02/23/22 13:54 1Carbon tetrachloride ND 5.00 ug/L 02/23/22 13:54 1ChlorobenzeneND 5.00 ug/L 02/23/22 13:54 1ChlorodibromomethaneND 5.00 ug/L 02/23/22 13:54 1ChloroethaneND 5.00 ug/L 02/23/22 13:54 1ChloroformND 5.00 ug/L 02/23/22 13:54 1ChloromethaneND 5.00 ug/L 02/23/22 13:54 1CyclohexaneND 5.00 ug/L 02/23/22 13:54 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/23/22 13:54 11,2-Dichlorobenzene ND 5.00 ug/L 02/23/22 13:54 11,3-Dichlorobenzene ND 5.00 ug/L 02/23/22 13:54 11,4-Dichlorobenzene ND 5.00 ug/L 02/23/22 13:54 1DichlorodifluoromethaneND 5.00 ug/L 02/23/22 13:54 11,1-Dichloroethane ND 5.00 ug/L 02/23/22 13:54 11,2-Dichloroethane ND 5.00 ug/L 02/23/22 13:54 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 13:54 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 13:54 11,1-Dichloroethene ND 5.00 ug/L 02/23/22 13:54 11,2-Dichloropropane ND 5.00 ug/L 02/23/22 13:54 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/23/22 13:54 1trans-1,3-Dichloropropene ND 1000 ug/L 02/23/22 13:54 11,4-Dioxane ND 5.00 ug/L 02/23/22 13:54 1EthylbenzeneND 5.00 ug/L 02/23/22 13:54 12-Hexanone ND 5.00 ug/L 02/23/22 13:54 1IsopropylbenzeneND 25.0 ug/L 02/23/22 13:54 1Methyl acetate ND 5.00 ug/L 02/23/22 13:54 1MethylcyclohexaneND 5.00 ug/L 02/23/22 13:54 1Methylene Chloride ND 5.00 ug/L 02/23/22 13:54 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/23/22 13:54 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/22 13:54 1StyreneND 5.00 ug/L 02/23/22 13:54 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/23/22 13:54 1TetrachloroetheneND 5.00 ug/L 02/23/22 13:54 1TolueneND 5.00 ug/L 02/23/22 13:54 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/23/22 13:54 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/23/22 13:54 11,1,1-Trichloroethane ND 5.00 ug/L 02/23/22 13:54 11,1,2-Trichloroethane ND 5.00 ug/L 02/23/22 13:54 1TrichloroetheneND 5.00 ug/L 02/23/22 13:54 1TrichlorofluoromethaneND 5.00 ug/L 02/23/22 13:54 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/23/22 13:54 1Vinyl chloride ND 5.00 ug/L 02/23/22 13:54 1m-Xylene & p-Xylene ND 5.00 ug/L 02/23/22 13:54 1o-Xylene ND 5.00 ug/L 02/23/22 13:54 11,2-Dibromoethane ND Eurofins Pittsburgh Page 46 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-10Client Sample ID: MW-7I Matrix: WaterDate Collected: 02/15/22 11:10 Date Received: 02/16/22 09:45 1,2-Dichloroethane-d4 (Surr)96 52 -151 02/23/22 13:54 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 02/23/22 13:54 153-124 4-Bromofluorobenzene (Surr)77 02/23/22 13:54 149-118 Dibromofluoromethane (Surr)99 02/23/22 13:54 160-132 Lab Sample ID: 180-133790-11Client Sample ID: MW-9 Matrix: WaterDate Collected: 02/15/22 14:30 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 1.26 1.00 0.300 ug/L 02/24/22 22:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 115 50 -150 02/24/22 22:55 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)78 02/24/22 22:55 150-150 4-Bromofluorobenzene 94 02/24/22 22:55 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/23/22 14:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 14:19 1BenzeneND 5.00 ug/L 02/23/22 14:19 1ChlorobromomethaneND 5.00 ug/L 02/23/22 14:19 1DichlorobromomethaneND 5.00 ug/L 02/23/22 14:19 1BromoformND 5.00 ug/L 02/23/22 14:19 1BromomethaneND 5.00 ug/L 02/23/22 14:19 12-Butanone (MEK)ND 5.00 ug/L 02/23/22 14:19 1Carbon disulfide ND 5.00 ug/L 02/23/22 14:19 1Carbon tetrachloride ND 5.00 ug/L 02/23/22 14:19 1ChlorobenzeneND 5.00 ug/L 02/23/22 14:19 1ChlorodibromomethaneND 5.00 ug/L 02/23/22 14:19 1ChloroethaneND 5.00 ug/L 02/23/22 14:19 1ChloroformND 5.00 ug/L 02/23/22 14:19 1ChloromethaneND 5.00 ug/L 02/23/22 14:19 1CyclohexaneND 5.00 ug/L 02/23/22 14:19 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/23/22 14:19 11,2-Dichlorobenzene ND 5.00 ug/L 02/23/22 14:19 11,3-Dichlorobenzene ND 5.00 ug/L 02/23/22 14:19 11,4-Dichlorobenzene ND 5.00 ug/L 02/23/22 14:19 1DichlorodifluoromethaneND 5.00 ug/L 02/23/22 14:19 11,1-Dichloroethane ND 5.00 ug/L 02/23/22 14:19 11,2-Dichloroethane ND 5.00 ug/L 02/23/22 14:19 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 14:19 11,1-Dichloroethene ND 5.00 ug/L 02/23/22 14:19 11,2-Dichloropropane ND 5.00 ug/L 02/23/22 14:19 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/23/22 14:19 1trans-1,3-Dichloropropene ND 1000 ug/L 02/23/22 14:19 11,4-Dioxane ND 5.00 ug/L 02/23/22 14:19 1EthylbenzeneND 5.00 ug/L 02/23/22 14:19 12-Hexanone ND 5.00 ug/L 02/23/22 14:19 1IsopropylbenzeneND Eurofins Pittsburgh Page 47 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-11Client Sample ID: MW-9 Matrix: WaterDate Collected: 02/15/22 14:30 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Methyl acetate ND 25.0 ug/L 02/23/22 14:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 14:19 1MethylcyclohexaneND 5.00 ug/L 02/23/22 14:19 1Methylene Chloride ND 5.00 ug/L 02/23/22 14:19 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/23/22 14:19 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/22 14:19 1StyreneND 5.00 ug/L 02/23/22 14:19 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/23/22 14:19 1TetrachloroetheneND 5.00 ug/L 02/23/22 14:19 1TolueneND 5.00 ug/L 02/23/22 14:19 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/23/22 14:19 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/23/22 14:19 11,1,1-Trichloroethane ND 5.00 ug/L 02/23/22 14:19 11,1,2-Trichloroethane ND 5.00 ug/L 02/23/22 14:19 1TrichloroetheneND 5.00 ug/L 02/23/22 14:19 1TrichlorofluoromethaneND 5.00 ug/L 02/23/22 14:19 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/23/22 14:19 1Vinyl chloride ND 5.00 ug/L 02/23/22 14:19 1m-Xylene & p-Xylene ND 5.00 ug/L 02/23/22 14:19 1o-Xylene ND 5.00 ug/L 02/23/22 14:19 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)100 52 -151 02/23/22 14:19 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 02/23/22 14:19 153-124 4-Bromofluorobenzene (Surr)76 02/23/22 14:19 149-118 Dibromofluoromethane (Surr)101 02/23/22 14:19 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL cis-1,2-Dichloroethene 112 25.0 ug/L 02/23/22 16:47 5 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)110 52 -151 02/23/22 16:47 5 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)109 02/23/22 16:47 553-124 4-Bromofluorobenzene (Surr)91 02/23/22 16:47 549-118 Dibromofluoromethane (Surr)110 02/23/22 16:47 560-132 Lab Sample ID: 180-133790-12Client Sample ID: MW-9I Matrix: WaterDate Collected: 02/15/22 15:00 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 7.40 1.00 0.300 ug/L 02/24/22 23:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 113 50 -150 02/24/22 23:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)79 02/24/22 23:20 150-150 4-Bromofluorobenzene 95 02/24/22 23:20 150-150 Eurofins Pittsburgh Page 48 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-12Client Sample ID: MW-9I Matrix: WaterDate Collected: 02/15/22 15:00 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/23/22 14:44 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 14:44 1BenzeneND 5.00 ug/L 02/23/22 14:44 1ChlorobromomethaneND 5.00 ug/L 02/23/22 14:44 1DichlorobromomethaneND 5.00 ug/L 02/23/22 14:44 1BromoformND 5.00 ug/L 02/23/22 14:44 1BromomethaneND 5.00 ug/L 02/23/22 14:44 12-Butanone (MEK)ND 5.00 ug/L 02/23/22 14:44 1Carbon disulfide ND 5.00 ug/L 02/23/22 14:44 1Carbon tetrachloride ND 5.00 ug/L 02/23/22 14:44 1ChlorobenzeneND 5.00 ug/L 02/23/22 14:44 1ChlorodibromomethaneND 5.00 ug/L 02/23/22 14:44 1ChloroethaneND 5.00 ug/L 02/23/22 14:44 1ChloroformND 5.00 ug/L 02/23/22 14:44 1ChloromethaneND 5.00 ug/L 02/23/22 14:44 1CyclohexaneND 5.00 ug/L 02/23/22 14:44 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/23/22 14:44 11,2-Dichlorobenzene ND 5.00 ug/L 02/23/22 14:44 11,3-Dichlorobenzene ND 5.00 ug/L 02/23/22 14:44 11,4-Dichlorobenzene ND 5.00 ug/L 02/23/22 14:44 1DichlorodifluoromethaneND 5.00 ug/L 02/23/22 14:44 11,1-Dichloroethane ND 5.00 ug/L 02/23/22 14:44 11,2-Dichloroethane 31.1 5.00 ug/L 02/23/22 14:44 1trans-1,2-Dichloroethene 23.4 5.00 ug/L 02/23/22 14:44 11,1-Dichloroethene 26.4 5.00 ug/L 02/23/22 14:44 11,2-Dichloropropane ND 5.00 ug/L 02/23/22 14:44 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/23/22 14:44 1trans-1,3-Dichloropropene ND 1000 ug/L 02/23/22 14:44 11,4-Dioxane ND 5.00 ug/L 02/23/22 14:44 1EthylbenzeneND 5.00 ug/L 02/23/22 14:44 12-Hexanone ND 5.00 ug/L 02/23/22 14:44 1IsopropylbenzeneND 25.0 ug/L 02/23/22 14:44 1Methyl acetate ND 5.00 ug/L 02/23/22 14:44 1MethylcyclohexaneND 5.00 ug/L 02/23/22 14:44 1Methylene Chloride ND 5.00 ug/L 02/23/22 14:44 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/23/22 14:44 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/22 14:44 1StyreneND 5.00 ug/L 02/23/22 14:44 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/23/22 14:44 1Tetrachloroethene8.41 5.00 ug/L 02/23/22 14:44 1TolueneND 5.00 ug/L 02/23/22 14:44 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/23/22 14:44 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/23/22 14:44 11,1,1-Trichloroethane ND 5.00 ug/L 02/23/22 14:44 11,1,2-Trichloroethane ND 5.00 ug/L 02/23/22 14:44 1TrichlorofluoromethaneND 5.00 ug/L 02/23/22 14:44 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/23/22 14:44 1Vinyl chloride 8.08 5.00 ug/L 02/23/22 14:44 1m-Xylene & p-Xylene ND 5.00 ug/L 02/23/22 14:44 1o-Xylene ND Eurofins Pittsburgh Page 49 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-12Client Sample ID: MW-9I Matrix: WaterDate Collected: 02/15/22 15:00 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2-Dibromoethane ND 5.00 ug/L 02/23/22 14:44 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)96 52 -151 02/23/22 14:44 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 02/23/22 14:44 153-124 4-Bromofluorobenzene (Surr)83 02/23/22 14:44 149-118 Dibromofluoromethane (Surr)101 02/23/22 14:44 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL cis-1,2-Dichloroethene 1600 500 ug/L 02/23/22 16:23 100 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 500 ug/L 02/23/22 16:23 100TrichloroetheneND 1,2-Dichloroethane-d4 (Surr)115 52 -151 02/23/22 16:23 100 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 02/23/22 16:23 10053-124 4-Bromofluorobenzene (Surr)89 02/23/22 16:23 10049-118 Dibromofluoromethane (Surr)107 02/23/22 16:23 10060-132 Lab Sample ID: 180-133790-13Client Sample ID: MW-11 Matrix: WaterDate Collected: 02/15/22 09:45 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 0.833 J 1.00 0.300 ug/L 02/24/22 23:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 120 50 -150 02/24/22 23:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)77 02/24/22 23:45 150-150 4-Bromofluorobenzene 93 02/24/22 23:45 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/23/22 15:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 15:59 1BenzeneND 5.00 ug/L 02/23/22 15:59 1ChlorobromomethaneND 5.00 ug/L 02/23/22 15:59 1DichlorobromomethaneND 5.00 ug/L 02/23/22 15:59 1BromoformND 5.00 ug/L 02/23/22 15:59 1BromomethaneND 5.00 ug/L 02/23/22 15:59 12-Butanone (MEK)ND 5.00 ug/L 02/23/22 15:59 1Carbon disulfide ND 5.00 ug/L 02/23/22 15:59 1Carbon tetrachloride ND 5.00 ug/L 02/23/22 15:59 1ChlorobenzeneND 5.00 ug/L 02/23/22 15:59 1ChlorodibromomethaneND 5.00 ug/L 02/23/22 15:59 1ChloroethaneND 5.00 ug/L 02/23/22 15:59 1ChloroformND 5.00 ug/L 02/23/22 15:59 1ChloromethaneND 5.00 ug/L 02/23/22 15:59 1CyclohexaneND 5.00 ug/L 02/23/22 15:59 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/23/22 15:59 11,2-Dichlorobenzene ND Eurofins Pittsburgh Page 50 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-13Client Sample ID: MW-11 Matrix: WaterDate Collected: 02/15/22 09:45 Date Received: 02/16/22 09:45 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,3-Dichlorobenzene ND 5.00 ug/L 02/23/22 15:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/23/22 15:59 11,4-Dichlorobenzene ND 5.00 ug/L 02/23/22 15:59 1DichlorodifluoromethaneND 5.00 ug/L 02/23/22 15:59 11,1-Dichloroethane ND 5.00 ug/L 02/23/22 15:59 11,2-Dichloroethane ND 5.00 ug/L 02/23/22 15:59 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 15:59 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 15:59 11,1-Dichloroethene ND 5.00 ug/L 02/23/22 15:59 11,2-Dichloropropane ND 5.00 ug/L 02/23/22 15:59 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/23/22 15:59 1trans-1,3-Dichloropropene ND 1000 ug/L 02/23/22 15:59 11,4-Dioxane ND 5.00 ug/L 02/23/22 15:59 1EthylbenzeneND 5.00 ug/L 02/23/22 15:59 12-Hexanone ND 5.00 ug/L 02/23/22 15:59 1IsopropylbenzeneND 25.0 ug/L 02/23/22 15:59 1Methyl acetate ND 5.00 ug/L 02/23/22 15:59 1MethylcyclohexaneND 5.00 ug/L 02/23/22 15:59 1Methylene Chloride ND 5.00 ug/L 02/23/22 15:59 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/23/22 15:59 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/22 15:59 1StyreneND 5.00 ug/L 02/23/22 15:59 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/23/22 15:59 1TetrachloroetheneND 5.00 ug/L 02/23/22 15:59 1TolueneND 5.00 ug/L 02/23/22 15:59 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/23/22 15:59 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/23/22 15:59 11,1,1-Trichloroethane ND 5.00 ug/L 02/23/22 15:59 11,1,2-Trichloroethane ND 5.00 ug/L 02/23/22 15:59 1TrichloroetheneND 5.00 ug/L 02/23/22 15:59 1TrichlorofluoromethaneND 5.00 ug/L 02/23/22 15:59 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/23/22 15:59 1Vinyl chloride ND 5.00 ug/L 02/23/22 15:59 1m-Xylene & p-Xylene ND 5.00 ug/L 02/23/22 15:59 1o-Xylene ND 5.00 ug/L 02/23/22 15:59 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)107 52 -151 02/23/22 15:59 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)89 02/23/22 15:59 153-124 4-Bromofluorobenzene (Surr)72 02/23/22 15:59 149-118 Dibromofluoromethane (Surr)107 02/23/22 15:59 160-132 Lab Sample ID: 180-133790-14Client Sample ID: MW-11-C Matrix: WaterDate Collected: 02/15/22 15:30 Date Received: 02/16/22 09:45 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/25/22 00:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins Pittsburgh Page 51 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-14Client Sample ID: MW-11-C Matrix: WaterDate Collected: 02/15/22 15:30 Date Received: 02/16/22 09:45 Dibromofluoromethane 115 50 -150 02/25/22 00:10 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)78 02/25/22 00:10 150-150 4-Bromofluorobenzene 94 02/25/22 00:10 150-150 Method: 8260D - Volatile Organic Compounds by GC/MS RL MDL 1,1,1-Trichloroethane ND 1.00 ug/L 02/24/22 18:18 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 02/24/22 18:18 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 02/24/22 18:18 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/24/22 18:18 11,1,2-Trichloroethane ND 1.00 ug/L 02/24/22 18:18 11,1-Dichloroethane ND 1.00 ug/L 02/24/22 18:18 11,1-Dichloroethene ND 1.00 ug/L 02/24/22 18:18 11,2,3-Trichlorobenzene ND 1.00 ug/L 02/24/22 18:18 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/24/22 18:18 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 02/24/22 18:18 11,2-Dichlorobenzene ND 1.00 ug/L 02/24/22 18:18 11,2-Dichloroethane ND 1.00 ug/L 02/24/22 18:18 11,2-Dichloropropane ND 1.00 ug/L 02/24/22 18:18 11,3-Dichlorobenzene ND 1.00 ug/L 02/24/22 18:18 11,4-Dichlorobenzene ND 400 ug/L 02/24/22 18:18 11,4-Dioxane ND 25.0 ug/L 02/24/22 18:18 12-Butanone (MEK)ND 25.0 ug/L 02/24/22 18:18 12-Hexanone ND 25.0 ug/L 02/24/22 18:18 14-Methyl-2-pentanone (MIBK)ND 25.0 ug/L 02/24/22 18:18 1AcetoneND 1.00 ug/L 02/24/22 18:18 1BenzeneND 5.00 ug/L 02/24/22 18:18 1BromoformND 1.00 ug/L 02/24/22 18:18 1BromomethaneND 1.00 ug/L 02/24/22 18:18 1Carbon disulfide ND 1.00 ug/L 02/24/22 18:18 1Carbon tetrachloride ND 1.00 ug/L 02/24/22 18:18 1ChlorobenzeneND 1.00 ug/L 02/24/22 18:18 1ChlorobromomethaneND 1.00 ug/L 02/24/22 18:18 1ChlorodibromomethaneND 1.00 ug/L 02/24/22 18:18 1ChloroethaneND 1.00 ug/L 02/24/22 18:18 1ChloroformND 1.00 ug/L 02/24/22 18:18 1ChloromethaneND 1.00 ug/L 02/24/22 18:18 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 18:18 1cis-1,3-Dichloropropene ND 1.00 ug/L 02/24/22 18:18 1CyclohexaneND 1.00 ug/L 02/24/22 18:18 1DichlorobromomethaneND 1.00 ug/L 02/24/22 18:18 1DichlorodifluoromethaneND 1.00 ug/L 02/24/22 18:18 1EthylbenzeneND 1.00 ug/L 02/24/22 18:18 11,2-Dibromoethane ND 1.00 ug/L 02/24/22 18:18 1IsopropylbenzeneND 5.00 ug/L 02/24/22 18:18 1Methyl acetate ND 1.00 ug/L 02/24/22 18:18 1Methyl tert-butyl ether ND 1.00 ug/L 02/24/22 18:18 1MethylcyclohexaneND 5.00 ug/L 02/24/22 18:18 1Methylene Chloride 7.27 5.00 ug/L 02/24/22 18:18 1m-Xylene & p-Xylene ND 5.00 ug/L 02/24/22 18:18 1o-Xylene ND Eurofins Pittsburgh Page 52 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133790-14Client Sample ID: MW-11-C Matrix: WaterDate Collected: 02/15/22 15:30 Date Received: 02/16/22 09:45 Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Styrene ND 1.00 ug/L 02/24/22 18:18 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 02/24/22 18:18 1TetrachloroetheneND 1.00 ug/L 02/24/22 18:18 1TolueneND 1.00 ug/L 02/24/22 18:18 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 18:18 1trans-1,3-Dichloropropene ND 1.00 ug/L 02/24/22 18:18 1TrichloroetheneND 1.00 ug/L 02/24/22 18:18 1TrichlorofluoromethaneND 1.00 ug/L 02/24/22 18:18 1Vinyl chloride ND 1,2-Dichloroethane-d4 (Surr)100 67 -134 02/24/22 18:18 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery 4-Bromofluorobenzene 109 02/24/22 18:18 172-119 Dibromofluoromethane 107 02/24/22 18:18 175-126 Toluene-d8 (Surr)91 02/24/22 18:18 164-132 Lab Sample ID: 180-133839-1Client Sample ID: MW-4 Matrix: WaterDate Collected: 02/16/22 12:40 Date Received: 02/17/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 2.17 1.00 0.300 ug/L 02/25/22 12:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 114 50 -150 02/25/22 12:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)77 02/25/22 12:45 150-150 4-Bromofluorobenzene 95 02/25/22 12:45 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/24/22 13:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 13:20 1BenzeneND 5.00 ug/L 02/24/22 13:20 1ChlorobromomethaneND 5.00 ug/L 02/24/22 13:20 1DichlorobromomethaneND 5.00 ug/L 02/24/22 13:20 1BromoformND 5.00 ug/L 02/24/22 13:20 1BromomethaneND 5.00 ug/L 02/24/22 13:20 12-Butanone (MEK)ND 5.00 ug/L 02/24/22 13:20 1Carbon disulfide ND *1 5.00 ug/L 02/24/22 13:20 1Carbon tetrachloride ND *1 5.00 ug/L 02/24/22 13:20 1ChlorobenzeneND 5.00 ug/L 02/24/22 13:20 1ChlorodibromomethaneND 5.00 ug/L 02/24/22 13:20 1ChloroethaneND 5.00 ug/L 02/24/22 13:20 1ChloroformND 5.00 ug/L 02/24/22 13:20 1ChloromethaneND 5.00 ug/L 02/24/22 13:20 1CyclohexaneND 5.00 ug/L 02/24/22 13:20 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/24/22 13:20 11,2-Dichlorobenzene ND 5.00 ug/L 02/24/22 13:20 11,3-Dichlorobenzene ND 5.00 ug/L 02/24/22 13:20 11,4-Dichlorobenzene ND 5.00 ug/L 02/24/22 13:20 1DichlorodifluoromethaneND *1 5.00 ug/L 02/24/22 13:20 11,1-Dichloroethane ND Eurofins Pittsburgh Page 53 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-1Client Sample ID: MW-4 Matrix: WaterDate Collected: 02/16/22 12:40 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2-Dichloroethane ND 5.00 ug/L 02/24/22 13:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 13:20 1cis-1,2-Dichloroethene 21.0 5.00 ug/L 02/24/22 13:20 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 13:20 11,1-Dichloroethene ND *+ *1 5.00 ug/L 02/24/22 13:20 11,2-Dichloropropane ND 5.00 ug/L 02/24/22 13:20 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/24/22 13:20 1trans-1,3-Dichloropropene ND 1000 ug/L 02/24/22 13:20 11,4-Dioxane ND *1 5.00 ug/L 02/24/22 13:20 1EthylbenzeneND 5.00 ug/L 02/24/22 13:20 12-Hexanone ND 5.00 ug/L 02/24/22 13:20 1IsopropylbenzeneND 25.0 ug/L 02/24/22 13:20 1Methyl acetate ND 5.00 ug/L 02/24/22 13:20 1MethylcyclohexaneND 5.00 ug/L 02/24/22 13:20 1Methylene Chloride ND 5.00 ug/L 02/24/22 13:20 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/24/22 13:20 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/22 13:20 1StyreneND 5.00 ug/L 02/24/22 13:20 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/24/22 13:20 1TetrachloroetheneND 5.00 ug/L 02/24/22 13:20 1TolueneND 5.00 ug/L 02/24/22 13:20 11,2,3-Trichlorobenzene ND *1 5.00 ug/L 02/24/22 13:20 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/24/22 13:20 11,1,1-Trichloroethane ND 5.00 ug/L 02/24/22 13:20 11,1,2-Trichloroethane ND 5.00 ug/L 02/24/22 13:20 1TrichloroetheneND 5.00 ug/L 02/24/22 13:20 1TrichlorofluoromethaneND 5.00 ug/L 02/24/22 13:20 11,1,2-Trichlorotrifluoroethane ND *1 5.00 ug/L 02/24/22 13:20 1Vinyl chloride ND *1 5.00 ug/L 02/24/22 13:20 1m-Xylene & p-Xylene ND 5.00 ug/L 02/24/22 13:20 1o-Xylene ND 5.00 ug/L 02/24/22 13:20 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)101 52 -151 02/24/22 13:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)98 02/24/22 13:20 153-124 4-Bromofluorobenzene (Surr)95 02/24/22 13:20 149-118 Dibromofluoromethane (Surr)93 02/24/22 13:20 160-132 Lab Sample ID: 180-133839-2Client Sample ID: MW-4I Matrix: WaterDate Collected: 02/16/22 11:45 Date Received: 02/17/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 19.9 1.00 0.300 ug/L 02/25/22 14:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 117 50 -150 02/25/22 14:25 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)77 02/25/22 14:25 150-150 4-Bromofluorobenzene 96 02/25/22 14:25 150-150 Eurofins Pittsburgh Page 54 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-2Client Sample ID: MW-4I Matrix: WaterDate Collected: 02/16/22 11:45 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/24/22 13:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 13:45 1BenzeneND 5.00 ug/L 02/24/22 13:45 1ChlorobromomethaneND 5.00 ug/L 02/24/22 13:45 1DichlorobromomethaneND 5.00 ug/L 02/24/22 13:45 1BromoformND 5.00 ug/L 02/24/22 13:45 1BromomethaneND 5.00 ug/L 02/24/22 13:45 12-Butanone (MEK)ND 5.00 ug/L 02/24/22 13:45 1Carbon disulfide ND *1 5.00 ug/L 02/24/22 13:45 1Carbon tetrachloride ND *1 5.00 ug/L 02/24/22 13:45 1ChlorobenzeneND 5.00 ug/L 02/24/22 13:45 1ChlorodibromomethaneND 5.00 ug/L 02/24/22 13:45 1ChloroethaneND 5.00 ug/L 02/24/22 13:45 1ChloroformND 5.00 ug/L 02/24/22 13:45 1ChloromethaneND 5.00 ug/L 02/24/22 13:45 1CyclohexaneND 5.00 ug/L 02/24/22 13:45 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/24/22 13:45 11,2-Dichlorobenzene ND 5.00 ug/L 02/24/22 13:45 11,3-Dichlorobenzene ND 5.00 ug/L 02/24/22 13:45 11,4-Dichlorobenzene ND 5.00 ug/L 02/24/22 13:45 1DichlorodifluoromethaneND *1 5.00 ug/L 02/24/22 13:45 11,1-Dichloroethane ND 5.00 ug/L 02/24/22 13:45 11,2-Dichloroethane ND 5.00 ug/L 02/24/22 13:45 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 13:45 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 13:45 11,1-Dichloroethene ND *+ *1 5.00 ug/L 02/24/22 13:45 11,2-Dichloropropane ND 5.00 ug/L 02/24/22 13:45 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/24/22 13:45 1trans-1,3-Dichloropropene ND 1000 ug/L 02/24/22 13:45 11,4-Dioxane ND *1 5.00 ug/L 02/24/22 13:45 1EthylbenzeneND 5.00 ug/L 02/24/22 13:45 12-Hexanone ND 5.00 ug/L 02/24/22 13:45 1IsopropylbenzeneND 25.0 ug/L 02/24/22 13:45 1Methyl acetate ND 5.00 ug/L 02/24/22 13:45 1MethylcyclohexaneND 5.00 ug/L 02/24/22 13:45 1Methylene Chloride ND 5.00 ug/L 02/24/22 13:45 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/24/22 13:45 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/22 13:45 1StyreneND 5.00 ug/L 02/24/22 13:45 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/24/22 13:45 1TetrachloroetheneND 5.00 ug/L 02/24/22 13:45 1TolueneND 5.00 ug/L 02/24/22 13:45 11,2,3-Trichlorobenzene ND *1 5.00 ug/L 02/24/22 13:45 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/24/22 13:45 11,1,1-Trichloroethane ND 5.00 ug/L 02/24/22 13:45 11,1,2-Trichloroethane ND 5.00 ug/L 02/24/22 13:45 1TrichloroetheneND 5.00 ug/L 02/24/22 13:45 1TrichlorofluoromethaneND 5.00 ug/L 02/24/22 13:45 11,1,2-Trichlorotrifluoroethane ND *1 5.00 ug/L 02/24/22 13:45 1Vinyl chloride ND *1 Eurofins Pittsburgh Page 55 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-2Client Sample ID: MW-4I Matrix: WaterDate Collected: 02/16/22 11:45 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL m-Xylene & p-Xylene ND 5.00 ug/L 02/24/22 13:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 13:45 1o-Xylene ND 5.00 ug/L 02/24/22 13:45 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)98 52 -151 02/24/22 13:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)93 02/24/22 13:45 153-124 4-Bromofluorobenzene (Surr)89 02/24/22 13:45 149-118 Dibromofluoromethane (Surr)93 02/24/22 13:45 160-132 Lab Sample ID: 180-133839-3Client Sample ID: MW-6 Matrix: WaterDate Collected: 02/16/22 11:25 Date Received: 02/17/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 0.379 J 1.00 0.300 ug/L 02/25/22 14:50 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 118 50 -150 02/25/22 14:50 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)77 02/25/22 14:50 150-150 4-Bromofluorobenzene 95 02/25/22 14:50 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/24/22 14:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 14:10 1BenzeneND 5.00 ug/L 02/24/22 14:10 1ChlorobromomethaneND 5.00 ug/L 02/24/22 14:10 1DichlorobromomethaneND 5.00 ug/L 02/24/22 14:10 1BromoformND 5.00 ug/L 02/24/22 14:10 1BromomethaneND 5.00 ug/L 02/24/22 14:10 12-Butanone (MEK)ND 5.00 ug/L 02/24/22 14:10 1Carbon disulfide ND *1 5.00 ug/L 02/24/22 14:10 1Carbon tetrachloride ND *1 5.00 ug/L 02/24/22 14:10 1ChlorobenzeneND 5.00 ug/L 02/24/22 14:10 1ChlorodibromomethaneND 5.00 ug/L 02/24/22 14:10 1ChloroethaneND 5.00 ug/L 02/24/22 14:10 1ChloroformND 5.00 ug/L 02/24/22 14:10 1ChloromethaneND 5.00 ug/L 02/24/22 14:10 1CyclohexaneND 5.00 ug/L 02/24/22 14:10 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/24/22 14:10 11,2-Dichlorobenzene ND 5.00 ug/L 02/24/22 14:10 11,3-Dichlorobenzene ND 5.00 ug/L 02/24/22 14:10 11,4-Dichlorobenzene ND 5.00 ug/L 02/24/22 14:10 1DichlorodifluoromethaneND *1 5.00 ug/L 02/24/22 14:10 11,1-Dichloroethane ND 5.00 ug/L 02/24/22 14:10 11,2-Dichloroethane ND 5.00 ug/L 02/24/22 14:10 1cis-1,2-Dichloroethene 11.7 5.00 ug/L 02/24/22 14:10 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 14:10 11,1-Dichloroethene ND *+ *1 5.00 ug/L 02/24/22 14:10 11,2-Dichloropropane ND Eurofins Pittsburgh Page 56 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-3Client Sample ID: MW-6 Matrix: WaterDate Collected: 02/16/22 11:25 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL cis-1,3-Dichloropropene ND 5.00 ug/L 02/24/22 14:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 14:10 1trans-1,3-Dichloropropene ND 1000 ug/L 02/24/22 14:10 11,4-Dioxane ND *1 5.00 ug/L 02/24/22 14:10 1EthylbenzeneND 5.00 ug/L 02/24/22 14:10 12-Hexanone ND 5.00 ug/L 02/24/22 14:10 1IsopropylbenzeneND 25.0 ug/L 02/24/22 14:10 1Methyl acetate ND 5.00 ug/L 02/24/22 14:10 1MethylcyclohexaneND 5.00 ug/L 02/24/22 14:10 1Methylene Chloride ND 5.00 ug/L 02/24/22 14:10 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/24/22 14:10 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/22 14:10 1StyreneND 5.00 ug/L 02/24/22 14:10 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/24/22 14:10 1TetrachloroetheneND 5.00 ug/L 02/24/22 14:10 1TolueneND 5.00 ug/L 02/24/22 14:10 11,2,3-Trichlorobenzene ND *1 5.00 ug/L 02/24/22 14:10 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/24/22 14:10 11,1,1-Trichloroethane ND 5.00 ug/L 02/24/22 14:10 11,1,2-Trichloroethane ND 5.00 ug/L 02/24/22 14:10 1TrichloroetheneND 5.00 ug/L 02/24/22 14:10 1TrichlorofluoromethaneND 5.00 ug/L 02/24/22 14:10 11,1,2-Trichlorotrifluoroethane ND *1 5.00 ug/L 02/24/22 14:10 1Vinyl chloride ND *1 5.00 ug/L 02/24/22 14:10 1m-Xylene & p-Xylene ND 5.00 ug/L 02/24/22 14:10 1o-Xylene ND 5.00 ug/L 02/24/22 14:10 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)95 52 -151 02/24/22 14:10 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)98 02/24/22 14:10 153-124 4-Bromofluorobenzene (Surr)91 02/24/22 14:10 149-118 Dibromofluoromethane (Surr)94 02/24/22 14:10 160-132 Lab Sample ID: 180-133839-4Client Sample ID: MW-6I Matrix: WaterDate Collected: 02/16/22 12:00 Date Received: 02/17/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 0.988 J 1.00 0.300 ug/L 02/25/22 15:15 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 120 50 -150 02/25/22 15:15 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)76 02/25/22 15:15 150-150 4-Bromofluorobenzene 94 02/25/22 15:15 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/24/22 14:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 14:35 1BenzeneND 5.00 ug/L 02/24/22 14:35 1ChlorobromomethaneND Eurofins Pittsburgh Page 57 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-4Client Sample ID: MW-6I Matrix: WaterDate Collected: 02/16/22 12:00 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Dichlorobromomethane ND 5.00 ug/L 02/24/22 14:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 14:35 1BromoformND 5.00 ug/L 02/24/22 14:35 1BromomethaneND 5.00 ug/L 02/24/22 14:35 12-Butanone (MEK)ND 5.00 ug/L 02/24/22 14:35 1Carbon disulfide ND *1 5.00 ug/L 02/24/22 14:35 1Carbon tetrachloride ND *1 5.00 ug/L 02/24/22 14:35 1ChlorobenzeneND 5.00 ug/L 02/24/22 14:35 1ChlorodibromomethaneND 5.00 ug/L 02/24/22 14:35 1ChloroethaneND 5.00 ug/L 02/24/22 14:35 1ChloroformND 5.00 ug/L 02/24/22 14:35 1ChloromethaneND 5.00 ug/L 02/24/22 14:35 1CyclohexaneND 5.00 ug/L 02/24/22 14:35 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/24/22 14:35 11,2-Dichlorobenzene ND 5.00 ug/L 02/24/22 14:35 11,3-Dichlorobenzene ND 5.00 ug/L 02/24/22 14:35 11,4-Dichlorobenzene ND 5.00 ug/L 02/24/22 14:35 1DichlorodifluoromethaneND *1 5.00 ug/L 02/24/22 14:35 11,1-Dichloroethane ND 5.00 ug/L 02/24/22 14:35 11,2-Dichloroethane ND 5.00 ug/L 02/24/22 14:35 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 14:35 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 14:35 11,1-Dichloroethene ND *+ *1 5.00 ug/L 02/24/22 14:35 11,2-Dichloropropane ND 5.00 ug/L 02/24/22 14:35 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/24/22 14:35 1trans-1,3-Dichloropropene ND 1000 ug/L 02/24/22 14:35 11,4-Dioxane ND *1 5.00 ug/L 02/24/22 14:35 1EthylbenzeneND 5.00 ug/L 02/24/22 14:35 12-Hexanone ND 5.00 ug/L 02/24/22 14:35 1IsopropylbenzeneND 25.0 ug/L 02/24/22 14:35 1Methyl acetate ND 5.00 ug/L 02/24/22 14:35 1MethylcyclohexaneND 5.00 ug/L 02/24/22 14:35 1Methylene Chloride ND 5.00 ug/L 02/24/22 14:35 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/24/22 14:35 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/22 14:35 1StyreneND 5.00 ug/L 02/24/22 14:35 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/24/22 14:35 1TetrachloroetheneND 5.00 ug/L 02/24/22 14:35 1TolueneND 5.00 ug/L 02/24/22 14:35 11,2,3-Trichlorobenzene ND *1 5.00 ug/L 02/24/22 14:35 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/24/22 14:35 11,1,1-Trichloroethane ND 5.00 ug/L 02/24/22 14:35 11,1,2-Trichloroethane ND 5.00 ug/L 02/24/22 14:35 1TrichloroetheneND 5.00 ug/L 02/24/22 14:35 1TrichlorofluoromethaneND 5.00 ug/L 02/24/22 14:35 11,1,2-Trichlorotrifluoroethane ND *1 5.00 ug/L 02/24/22 14:35 1Vinyl chloride ND *1 5.00 ug/L 02/24/22 14:35 1m-Xylene & p-Xylene ND 5.00 ug/L 02/24/22 14:35 1o-Xylene ND 5.00 ug/L 02/24/22 14:35 11,2-Dibromoethane ND Eurofins Pittsburgh Page 58 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-4Client Sample ID: MW-6I Matrix: WaterDate Collected: 02/16/22 12:00 Date Received: 02/17/22 09:30 1,2-Dichloroethane-d4 (Surr)79 52 -151 02/24/22 14:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)81 02/24/22 14:35 153-124 4-Bromofluorobenzene (Surr)80 02/24/22 14:35 149-118 Dibromofluoromethane (Surr)76 02/24/22 14:35 160-132 Lab Sample ID: 180-133839-5Client Sample ID: MW-8 Matrix: WaterDate Collected: 02/16/22 10:30 Date Received: 02/17/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 3.69 1.00 0.300 ug/L 02/25/22 15:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 117 50 -150 02/25/22 15:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)76 02/25/22 15:40 150-150 4-Bromofluorobenzene 94 02/25/22 15:40 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/24/22 15:00 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 15:00 1BenzeneND 5.00 ug/L 02/24/22 15:00 1ChlorobromomethaneND 5.00 ug/L 02/24/22 15:00 1DichlorobromomethaneND 5.00 ug/L 02/24/22 15:00 1BromoformND 5.00 ug/L 02/24/22 15:00 1BromomethaneND 5.00 ug/L 02/24/22 15:00 12-Butanone (MEK)ND 5.00 ug/L 02/24/22 15:00 1Carbon disulfide ND *1 5.00 ug/L 02/24/22 15:00 1Carbon tetrachloride ND *1 5.00 ug/L 02/24/22 15:00 1ChlorobenzeneND 5.00 ug/L 02/24/22 15:00 1ChlorodibromomethaneND 5.00 ug/L 02/24/22 15:00 1ChloroethaneND 5.00 ug/L 02/24/22 15:00 1ChloroformND 5.00 ug/L 02/24/22 15:00 1ChloromethaneND 5.00 ug/L 02/24/22 15:00 1CyclohexaneND 5.00 ug/L 02/24/22 15:00 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/24/22 15:00 11,2-Dichlorobenzene ND 5.00 ug/L 02/24/22 15:00 11,3-Dichlorobenzene ND 5.00 ug/L 02/24/22 15:00 11,4-Dichlorobenzene ND 5.00 ug/L 02/24/22 15:00 1DichlorodifluoromethaneND *1 5.00 ug/L 02/24/22 15:00 11,1-Dichloroethane 13.6 5.00 ug/L 02/24/22 15:00 11,2-Dichloroethane ND 5.00 ug/L 02/24/22 15:00 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 15:00 11,1-Dichloroethene ND *+ *1 5.00 ug/L 02/24/22 15:00 11,2-Dichloropropane ND 5.00 ug/L 02/24/22 15:00 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/24/22 15:00 1trans-1,3-Dichloropropene ND 1000 ug/L 02/24/22 15:00 11,4-Dioxane ND *1 5.00 ug/L 02/24/22 15:00 1EthylbenzeneND 5.00 ug/L 02/24/22 15:00 12-Hexanone ND 5.00 ug/L 02/24/22 15:00 1IsopropylbenzeneND Eurofins Pittsburgh Page 59 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-5Client Sample ID: MW-8 Matrix: WaterDate Collected: 02/16/22 10:30 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Methyl acetate ND 25.0 ug/L 02/24/22 15:00 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 15:00 1MethylcyclohexaneND 5.00 ug/L 02/24/22 15:00 1Methylene Chloride ND 5.00 ug/L 02/24/22 15:00 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/24/22 15:00 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/22 15:00 1StyreneND 5.00 ug/L 02/24/22 15:00 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/24/22 15:00 1TetrachloroetheneND 5.00 ug/L 02/24/22 15:00 1TolueneND 5.00 ug/L 02/24/22 15:00 11,2,3-Trichlorobenzene ND *1 5.00 ug/L 02/24/22 15:00 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/24/22 15:00 11,1,1-Trichloroethane ND 5.00 ug/L 02/24/22 15:00 11,1,2-Trichloroethane ND 5.00 ug/L 02/24/22 15:00 1Trichloroethene11.9 5.00 ug/L 02/24/22 15:00 1TrichlorofluoromethaneND 5.00 ug/L 02/24/22 15:00 11,1,2-Trichlorotrifluoroethane ND *1 5.00 ug/L 02/24/22 15:00 1Vinyl chloride ND *1 5.00 ug/L 02/24/22 15:00 1m-Xylene & p-Xylene ND 5.00 ug/L 02/24/22 15:00 1o-Xylene ND 5.00 ug/L 02/24/22 15:00 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)98 52 -151 02/24/22 15:00 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)106 02/24/22 15:00 153-124 4-Bromofluorobenzene (Surr)85 02/24/22 15:00 149-118 Dibromofluoromethane (Surr)101 02/24/22 15:00 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL cis-1,2-Dichloroethene 88.0 50.0 ug/L 02/25/22 13:45 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)96 52 -151 02/25/22 13:45 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 02/25/22 13:45 1053-124 4-Bromofluorobenzene (Surr)97 02/25/22 13:45 1049-118 Dibromofluoromethane (Surr)96 02/25/22 13:45 1060-132 Lab Sample ID: 180-133839-6Client Sample ID: MW-8-a Matrix: WaterDate Collected: 02/16/22 10:30 Date Received: 02/17/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 3.95 1.00 0.300 ug/L 02/25/22 16:06 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 116 50 -150 02/25/22 16:06 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)77 02/25/22 16:06 150-150 4-Bromofluorobenzene 94 02/25/22 16:06 150-150 Eurofins Pittsburgh Page 60 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-6Client Sample ID: MW-8-a Matrix: WaterDate Collected: 02/16/22 10:30 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/24/22 15:26 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 15:26 1BenzeneND 5.00 ug/L 02/24/22 15:26 1ChlorobromomethaneND 5.00 ug/L 02/24/22 15:26 1DichlorobromomethaneND 5.00 ug/L 02/24/22 15:26 1BromoformND 5.00 ug/L 02/24/22 15:26 1BromomethaneND 5.00 ug/L 02/24/22 15:26 12-Butanone (MEK)ND 5.00 ug/L 02/24/22 15:26 1Carbon disulfide ND *1 5.00 ug/L 02/24/22 15:26 1Carbon tetrachloride ND *1 5.00 ug/L 02/24/22 15:26 1ChlorobenzeneND 5.00 ug/L 02/24/22 15:26 1ChlorodibromomethaneND 5.00 ug/L 02/24/22 15:26 1ChloroethaneND 5.00 ug/L 02/24/22 15:26 1ChloroformND 5.00 ug/L 02/24/22 15:26 1ChloromethaneND 5.00 ug/L 02/24/22 15:26 1CyclohexaneND 5.00 ug/L 02/24/22 15:26 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/24/22 15:26 11,2-Dichlorobenzene ND 5.00 ug/L 02/24/22 15:26 11,3-Dichlorobenzene ND 5.00 ug/L 02/24/22 15:26 11,4-Dichlorobenzene ND 5.00 ug/L 02/24/22 15:26 1DichlorodifluoromethaneND *1 5.00 ug/L 02/24/22 15:26 11,1-Dichloroethane 14.6 5.00 ug/L 02/24/22 15:26 11,2-Dichloroethane ND 5.00 ug/L 02/24/22 15:26 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 15:26 11,1-Dichloroethene ND *+ *1 5.00 ug/L 02/24/22 15:26 11,2-Dichloropropane ND 5.00 ug/L 02/24/22 15:26 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/24/22 15:26 1trans-1,3-Dichloropropene ND 1000 ug/L 02/24/22 15:26 11,4-Dioxane ND *1 5.00 ug/L 02/24/22 15:26 1EthylbenzeneND 5.00 ug/L 02/24/22 15:26 12-Hexanone ND 5.00 ug/L 02/24/22 15:26 1IsopropylbenzeneND 25.0 ug/L 02/24/22 15:26 1Methyl acetate ND 5.00 ug/L 02/24/22 15:26 1MethylcyclohexaneND 5.00 ug/L 02/24/22 15:26 1Methylene Chloride ND 5.00 ug/L 02/24/22 15:26 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/24/22 15:26 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/22 15:26 1StyreneND 5.00 ug/L 02/24/22 15:26 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/24/22 15:26 1TetrachloroetheneND 5.00 ug/L 02/24/22 15:26 1TolueneND 5.00 ug/L 02/24/22 15:26 11,2,3-Trichlorobenzene ND *1 5.00 ug/L 02/24/22 15:26 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/24/22 15:26 11,1,1-Trichloroethane ND 5.00 ug/L 02/24/22 15:26 11,1,2-Trichloroethane ND 5.00 ug/L 02/24/22 15:26 1Trichloroethene12.9 5.00 ug/L 02/24/22 15:26 1TrichlorofluoromethaneND 5.00 ug/L 02/24/22 15:26 11,1,2-Trichlorotrifluoroethane ND *1 5.00 ug/L 02/24/22 15:26 1Vinyl chloride ND *1 5.00 ug/L 02/24/22 15:26 1m-Xylene & p-Xylene ND Eurofins Pittsburgh Page 61 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-6Client Sample ID: MW-8-a Matrix: WaterDate Collected: 02/16/22 10:30 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL o-Xylene ND 5.00 ug/L 02/24/22 15:26 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 15:26 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)115 52 -151 02/24/22 15:26 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)97 02/24/22 15:26 153-124 4-Bromofluorobenzene (Surr)99 02/24/22 15:26 149-118 Dibromofluoromethane (Surr)107 02/24/22 15:26 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL cis-1,2-Dichloroethene 87.1 50.0 ug/L 02/25/22 14:10 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)94 52 -151 02/25/22 14:10 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)93 02/25/22 14:10 1053-124 4-Bromofluorobenzene (Surr)90 02/25/22 14:10 1049-118 Dibromofluoromethane (Surr)92 02/25/22 14:10 1060-132 Lab Sample ID: 180-133839-7Client Sample ID: MW-12 Matrix: WaterDate Collected: 02/16/22 13:40 Date Received: 02/17/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 1.26 1.00 0.300 ug/L 02/25/22 16:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 115 50 -150 02/25/22 16:31 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)75 02/25/22 16:31 150-150 4-Bromofluorobenzene 95 02/25/22 16:31 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/25/22 13:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/25/22 13:20 1BenzeneND 5.00 ug/L 02/25/22 13:20 1ChlorobromomethaneND 5.00 ug/L 02/25/22 13:20 1DichlorobromomethaneND 5.00 ug/L 02/25/22 13:20 1BromoformND 5.00 ug/L 02/25/22 13:20 1BromomethaneND 5.00 ug/L 02/25/22 13:20 12-Butanone (MEK)ND 5.00 ug/L 02/25/22 13:20 1Carbon disulfide ND 5.00 ug/L 02/25/22 13:20 1Carbon tetrachloride ND 5.00 ug/L 02/25/22 13:20 1ChlorobenzeneND 5.00 ug/L 02/25/22 13:20 1ChlorodibromomethaneND 5.00 ug/L 02/25/22 13:20 1ChloroethaneND 5.00 ug/L 02/25/22 13:20 1ChloroformND 5.00 ug/L 02/25/22 13:20 1ChloromethaneND 5.00 ug/L 02/25/22 13:20 1CyclohexaneND 5.00 ug/L 02/25/22 13:20 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/25/22 13:20 11,2-Dichlorobenzene ND Eurofins Pittsburgh Page 62 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-7Client Sample ID: MW-12 Matrix: WaterDate Collected: 02/16/22 13:40 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,3-Dichlorobenzene ND 5.00 ug/L 02/25/22 13:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/25/22 13:20 11,4-Dichlorobenzene ND 5.00 ug/L 02/25/22 13:20 1DichlorodifluoromethaneND 5.00 ug/L 02/25/22 13:20 11,1-Dichloroethane ND 5.00 ug/L 02/25/22 13:20 11,2-Dichloroethane ND 5.00 ug/L 02/25/22 13:20 1cis-1,2-Dichloroethene 37.3 5.00 ug/L 02/25/22 13:20 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/25/22 13:20 11,1-Dichloroethene ND 5.00 ug/L 02/25/22 13:20 11,2-Dichloropropane ND 5.00 ug/L 02/25/22 13:20 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/25/22 13:20 1trans-1,3-Dichloropropene ND 1000 ug/L 02/25/22 13:20 11,4-Dioxane ND 5.00 ug/L 02/25/22 13:20 1EthylbenzeneND 5.00 ug/L 02/25/22 13:20 12-Hexanone ND 5.00 ug/L 02/25/22 13:20 1IsopropylbenzeneND 25.0 ug/L 02/25/22 13:20 1Methyl acetate ND 5.00 ug/L 02/25/22 13:20 1MethylcyclohexaneND 5.00 ug/L 02/25/22 13:20 1Methylene Chloride ND 5.00 ug/L 02/25/22 13:20 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/25/22 13:20 1Methyl tert-butyl ether ND 5.00 ug/L 02/25/22 13:20 1StyreneND 5.00 ug/L 02/25/22 13:20 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/25/22 13:20 1TetrachloroetheneND 5.00 ug/L 02/25/22 13:20 1TolueneND 5.00 ug/L 02/25/22 13:20 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/25/22 13:20 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/25/22 13:20 11,1,1-Trichloroethane ND 5.00 ug/L 02/25/22 13:20 11,1,2-Trichloroethane ND 5.00 ug/L 02/25/22 13:20 1TrichloroetheneND 5.00 ug/L 02/25/22 13:20 1TrichlorofluoromethaneND 5.00 ug/L 02/25/22 13:20 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/25/22 13:20 1Vinyl chloride ND 5.00 ug/L 02/25/22 13:20 1m-Xylene & p-Xylene ND 5.00 ug/L 02/25/22 13:20 1o-Xylene ND 5.00 ug/L 02/25/22 13:20 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)110 52 -151 02/25/22 13:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 02/25/22 13:20 153-124 4-Bromofluorobenzene (Surr)100 02/25/22 13:20 149-118 Dibromofluoromethane (Surr)99 02/25/22 13:20 160-132 Lab Sample ID: 180-133839-8Client Sample ID: MW-12I Matrix: WaterDate Collected: 02/16/22 14:35 Date Received: 02/17/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 6.30 1.00 0.300 ug/L 02/25/22 16:56 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins Pittsburgh Page 63 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-8Client Sample ID: MW-12I Matrix: WaterDate Collected: 02/16/22 14:35 Date Received: 02/17/22 09:30 Dibromofluoromethane 110 50 -150 02/25/22 16:56 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)76 02/25/22 16:56 150-150 4-Bromofluorobenzene 95 02/25/22 16:56 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/28/22 19:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/28/22 19:03 1BenzeneND 5.00 ug/L 02/28/22 19:03 1ChlorobromomethaneND 5.00 ug/L 02/28/22 19:03 1DichlorobromomethaneND 5.00 ug/L 02/28/22 19:03 1BromoformND 5.00 ug/L 02/28/22 19:03 1BromomethaneND 5.00 ug/L 02/28/22 19:03 12-Butanone (MEK)ND 5.00 ug/L 02/28/22 19:03 1Carbon disulfide ND 5.00 ug/L 02/28/22 19:03 1Carbon tetrachloride ND 5.00 ug/L 02/28/22 19:03 1ChlorobenzeneND 5.00 ug/L 02/28/22 19:03 1ChlorodibromomethaneND 5.00 ug/L 02/28/22 19:03 1ChloroethaneND 5.00 ug/L 02/28/22 19:03 1ChloroformND 5.00 ug/L 02/28/22 19:03 1ChloromethaneND 5.00 ug/L 02/28/22 19:03 1CyclohexaneND 5.00 ug/L 02/28/22 19:03 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/28/22 19:03 11,2-Dichlorobenzene ND 5.00 ug/L 02/28/22 19:03 11,3-Dichlorobenzene ND 5.00 ug/L 02/28/22 19:03 11,4-Dichlorobenzene ND 5.00 ug/L 02/28/22 19:03 1DichlorodifluoromethaneND 5.00 ug/L 02/28/22 19:03 11,1-Dichloroethane ND 5.00 ug/L 02/28/22 19:03 1trans-1,2-Dichloroethene 5.13 5.00 ug/L 02/28/22 19:03 11,1-Dichloroethene 12.8 5.00 ug/L 02/28/22 19:03 11,2-Dichloropropane ND 5.00 ug/L 02/28/22 19:03 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/28/22 19:03 1trans-1,3-Dichloropropene ND 1000 ug/L 02/28/22 19:03 11,4-Dioxane ND *+ 5.00 ug/L 02/28/22 19:03 1EthylbenzeneND 5.00 ug/L 02/28/22 19:03 12-Hexanone ND 5.00 ug/L 02/28/22 19:03 1IsopropylbenzeneND 25.0 ug/L 02/28/22 19:03 1Methyl acetate ND 5.00 ug/L 02/28/22 19:03 1MethylcyclohexaneND 5.00 ug/L 02/28/22 19:03 1Methylene Chloride ND 5.00 ug/L 02/28/22 19:03 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/28/22 19:03 1Methyl tert-butyl ether ND 5.00 ug/L 02/28/22 19:03 1StyreneND 5.00 ug/L 02/28/22 19:03 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/28/22 19:03 1TetrachloroetheneND 5.00 ug/L 02/28/22 19:03 1TolueneND 5.00 ug/L 02/28/22 19:03 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/28/22 19:03 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/28/22 19:03 11,1,1-Trichloroethane ND 5.00 ug/L 02/28/22 19:03 11,1,2-Trichloroethane ND 5.00 ug/L 02/28/22 19:03 1Trichloroethene31.0 Eurofins Pittsburgh Page 64 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-8Client Sample ID: MW-12I Matrix: WaterDate Collected: 02/16/22 14:35 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Trichlorofluoromethane ND 5.00 ug/L 02/28/22 19:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/28/22 19:03 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/28/22 19:03 1Vinyl chloride 6.81 5.00 ug/L 02/28/22 19:03 1m-Xylene & p-Xylene ND 5.00 ug/L 02/28/22 19:03 1o-Xylene ND 5.00 ug/L 02/28/22 19:03 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)99 52 -151 02/28/22 19:03 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)95 02/28/22 19:03 153-124 4-Bromofluorobenzene (Surr)93 02/28/22 19:03 149-118 Dibromofluoromethane (Surr)97 02/28/22 19:03 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL 1,2-Dichloroethane 58.7 50.0 ug/L 02/25/22 14:35 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 50.0 ug/L 02/25/22 14:35 10cis-1,2-Dichloroethene 339 1,2-Dichloroethane-d4 (Surr)98 52 -151 02/25/22 14:35 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 02/25/22 14:35 1053-124 4-Bromofluorobenzene (Surr)92 02/25/22 14:35 1049-118 Dibromofluoromethane (Surr)95 02/25/22 14:35 1060-132 Lab Sample ID: 180-133839-9Client Sample ID: MW-13 Matrix: WaterDate Collected: 02/16/22 13:50 Date Received: 02/17/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 1.43 1.00 0.300 ug/L 02/25/22 17:21 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 117 50 -150 02/25/22 17:21 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)75 02/25/22 17:21 150-150 4-Bromofluorobenzene 93 02/25/22 17:21 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/24/22 17:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 17:31 1BenzeneND 5.00 ug/L 02/24/22 17:31 1ChlorobromomethaneND 5.00 ug/L 02/24/22 17:31 1DichlorobromomethaneND 5.00 ug/L 02/24/22 17:31 1BromoformND 5.00 ug/L 02/24/22 17:31 1BromomethaneND 5.00 ug/L 02/24/22 17:31 12-Butanone (MEK)ND 5.00 ug/L 02/24/22 17:31 1Carbon disulfide ND *1 5.00 ug/L 02/24/22 17:31 1Carbon tetrachloride ND *1 5.00 ug/L 02/24/22 17:31 1ChlorobenzeneND 5.00 ug/L 02/24/22 17:31 1ChlorodibromomethaneND 5.00 ug/L 02/24/22 17:31 1ChloroethaneND Eurofins Pittsburgh Page 65 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-9Client Sample ID: MW-13 Matrix: WaterDate Collected: 02/16/22 13:50 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Chloroform ND 5.00 ug/L 02/24/22 17:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 17:31 1ChloromethaneND 5.00 ug/L 02/24/22 17:31 1CyclohexaneND 5.00 ug/L 02/24/22 17:31 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/24/22 17:31 11,2-Dichlorobenzene ND 5.00 ug/L 02/24/22 17:31 11,3-Dichlorobenzene ND 5.00 ug/L 02/24/22 17:31 11,4-Dichlorobenzene ND 5.00 ug/L 02/24/22 17:31 1DichlorodifluoromethaneND *1 5.00 ug/L 02/24/22 17:31 11,1-Dichloroethane ND 5.00 ug/L 02/24/22 17:31 11,2-Dichloroethane ND 5.00 ug/L 02/24/22 17:31 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 17:31 11,1-Dichloroethene ND *+ *1 5.00 ug/L 02/24/22 17:31 11,2-Dichloropropane ND 5.00 ug/L 02/24/22 17:31 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/24/22 17:31 1trans-1,3-Dichloropropene ND 1000 ug/L 02/24/22 17:31 11,4-Dioxane ND *1 5.00 ug/L 02/24/22 17:31 1EthylbenzeneND 5.00 ug/L 02/24/22 17:31 12-Hexanone ND 5.00 ug/L 02/24/22 17:31 1IsopropylbenzeneND 25.0 ug/L 02/24/22 17:31 1Methyl acetate ND 5.00 ug/L 02/24/22 17:31 1MethylcyclohexaneND 5.00 ug/L 02/24/22 17:31 1Methylene Chloride ND 5.00 ug/L 02/24/22 17:31 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/24/22 17:31 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/22 17:31 1StyreneND 5.00 ug/L 02/24/22 17:31 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/24/22 17:31 1TetrachloroetheneND 5.00 ug/L 02/24/22 17:31 1TolueneND 5.00 ug/L 02/24/22 17:31 11,2,3-Trichlorobenzene ND *1 5.00 ug/L 02/24/22 17:31 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/24/22 17:31 11,1,1-Trichloroethane ND 5.00 ug/L 02/24/22 17:31 11,1,2-Trichloroethane ND 5.00 ug/L 02/24/22 17:31 1TrichloroetheneND 5.00 ug/L 02/24/22 17:31 1TrichlorofluoromethaneND 5.00 ug/L 02/24/22 17:31 11,1,2-Trichlorotrifluoroethane ND *1 5.00 ug/L 02/24/22 17:31 1Vinyl chloride ND *1 5.00 ug/L 02/24/22 17:31 1m-Xylene & p-Xylene ND 5.00 ug/L 02/24/22 17:31 1o-Xylene ND 5.00 ug/L 02/24/22 17:31 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)94 52 -151 02/24/22 17:31 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 02/24/22 17:31 153-124 4-Bromofluorobenzene (Surr)92 02/24/22 17:31 149-118 Dibromofluoromethane (Surr)92 02/24/22 17:31 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL cis-1,2-Dichloroethene 93.9 50.0 ug/L 02/25/22 15:00 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins Pittsburgh Page 66 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-9Client Sample ID: MW-13 Matrix: WaterDate Collected: 02/16/22 13:50 Date Received: 02/17/22 09:30 1,2-Dichloroethane-d4 (Surr)112 52 -151 02/25/22 15:00 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)107 02/25/22 15:00 1053-124 4-Bromofluorobenzene (Surr)101 02/25/22 15:00 1049-118 Dibromofluoromethane (Surr)113 02/25/22 15:00 1060-132 Lab Sample ID: 180-133839-10Client Sample ID: MW-13I Matrix: WaterDate Collected: 02/16/22 14:40 Date Received: 02/17/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 6.87 1.00 0.300 ug/L 02/25/22 17:46 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 115 50 -150 02/25/22 17:46 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)75 02/25/22 17:46 150-150 4-Bromofluorobenzene 94 02/25/22 17:46 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/28/22 19:27 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/28/22 19:27 1BenzeneND 5.00 ug/L 02/28/22 19:27 1ChlorobromomethaneND 5.00 ug/L 02/28/22 19:27 1DichlorobromomethaneND 5.00 ug/L 02/28/22 19:27 1BromoformND 5.00 ug/L 02/28/22 19:27 1BromomethaneND 5.00 ug/L 02/28/22 19:27 12-Butanone (MEK)ND 5.00 ug/L 02/28/22 19:27 1Carbon disulfide ND 5.00 ug/L 02/28/22 19:27 1Carbon tetrachloride ND 5.00 ug/L 02/28/22 19:27 1ChlorobenzeneND 5.00 ug/L 02/28/22 19:27 1ChlorodibromomethaneND 5.00 ug/L 02/28/22 19:27 1ChloroethaneND 5.00 ug/L 02/28/22 19:27 1ChloroformND 5.00 ug/L 02/28/22 19:27 1ChloromethaneND 5.00 ug/L 02/28/22 19:27 1CyclohexaneND 5.00 ug/L 02/28/22 19:27 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/28/22 19:27 11,2-Dichlorobenzene ND 5.00 ug/L 02/28/22 19:27 11,3-Dichlorobenzene ND 5.00 ug/L 02/28/22 19:27 11,4-Dichlorobenzene ND 5.00 ug/L 02/28/22 19:27 1DichlorodifluoromethaneND 5.00 ug/L 02/28/22 19:27 11,1-Dichloroethane 11.2 5.00 ug/L 02/28/22 19:27 11,2-Dichloroethane ND 5.00 ug/L 02/28/22 19:27 1trans-1,2-Dichloroethene 8.77 5.00 ug/L 02/28/22 19:27 11,1-Dichloroethene 8.80 5.00 ug/L 02/28/22 19:27 11,2-Dichloropropane ND 5.00 ug/L 02/28/22 19:27 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/28/22 19:27 1trans-1,3-Dichloropropene ND 1000 ug/L 02/28/22 19:27 11,4-Dioxane ND *+ 5.00 ug/L 02/28/22 19:27 1EthylbenzeneND 5.00 ug/L 02/28/22 19:27 12-Hexanone ND 5.00 ug/L 02/28/22 19:27 1IsopropylbenzeneND Eurofins Pittsburgh Page 67 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-10Client Sample ID: MW-13I Matrix: WaterDate Collected: 02/16/22 14:40 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Methyl acetate ND 25.0 ug/L 02/28/22 19:27 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/28/22 19:27 1MethylcyclohexaneND 5.00 ug/L 02/28/22 19:27 1Methylene Chloride ND 5.00 ug/L 02/28/22 19:27 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/28/22 19:27 1Methyl tert-butyl ether ND 5.00 ug/L 02/28/22 19:27 1StyreneND 5.00 ug/L 02/28/22 19:27 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/28/22 19:27 1Tetrachloroethene19.0 5.00 ug/L 02/28/22 19:27 1TolueneND 5.00 ug/L 02/28/22 19:27 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/28/22 19:27 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/28/22 19:27 11,1,1-Trichloroethane ND 5.00 ug/L 02/28/22 19:27 11,1,2-Trichloroethane ND 5.00 ug/L 02/28/22 19:27 1TrichlorofluoromethaneND 5.00 ug/L 02/28/22 19:27 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/28/22 19:27 1Vinyl chloride ND 5.00 ug/L 02/28/22 19:27 1m-Xylene & p-Xylene ND 5.00 ug/L 02/28/22 19:27 1o-Xylene ND 5.00 ug/L 02/28/22 19:27 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)86 52 -151 02/28/22 19:27 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)87 02/28/22 19:27 153-124 4-Bromofluorobenzene (Surr)92 02/28/22 19:27 149-118 Dibromofluoromethane (Surr)91 02/28/22 19:27 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL cis-1,2-Dichloroethene 164 50.0 ug/L 02/25/22 15:26 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 50.0 ug/L 02/25/22 15:26 10Trichloroethene53.8 1,2-Dichloroethane-d4 (Surr)97 52 -151 02/25/22 15:26 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 02/25/22 15:26 1053-124 4-Bromofluorobenzene (Surr)98 02/25/22 15:26 1049-118 Dibromofluoromethane (Surr)89 02/25/22 15:26 1060-132 Lab Sample ID: 180-133839-11Client Sample ID: MW-16 Matrix: WaterDate Collected: 02/16/22 10:15 Date Received: 02/17/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 2.77 1.00 0.300 ug/L 02/25/22 18:11 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 116 50 -150 02/25/22 18:11 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)75 02/25/22 18:11 150-150 4-Bromofluorobenzene 94 02/25/22 18:11 150-150 Eurofins Pittsburgh Page 68 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-11Client Sample ID: MW-16 Matrix: WaterDate Collected: 02/16/22 10:15 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *1 20.0 ug/L 02/24/22 18:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 18:22 1BenzeneND 5.00 ug/L 02/24/22 18:22 1ChlorobromomethaneND 5.00 ug/L 02/24/22 18:22 1DichlorobromomethaneND 5.00 ug/L 02/24/22 18:22 1BromoformND 5.00 ug/L 02/24/22 18:22 1BromomethaneND 5.00 ug/L 02/24/22 18:22 12-Butanone (MEK)ND 5.00 ug/L 02/24/22 18:22 1Carbon disulfide ND *1 5.00 ug/L 02/24/22 18:22 1Carbon tetrachloride ND *1 5.00 ug/L 02/24/22 18:22 1ChlorobenzeneND 5.00 ug/L 02/24/22 18:22 1ChlorodibromomethaneND 5.00 ug/L 02/24/22 18:22 1ChloroethaneND 5.00 ug/L 02/24/22 18:22 1ChloroformND 5.00 ug/L 02/24/22 18:22 1ChloromethaneND 5.00 ug/L 02/24/22 18:22 1CyclohexaneND 5.00 ug/L 02/24/22 18:22 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/24/22 18:22 11,2-Dichlorobenzene ND 5.00 ug/L 02/24/22 18:22 11,3-Dichlorobenzene ND 5.00 ug/L 02/24/22 18:22 11,4-Dichlorobenzene ND 5.00 ug/L 02/24/22 18:22 1DichlorodifluoromethaneND *1 5.00 ug/L 02/24/22 18:22 11,1-Dichloroethane ND 5.00 ug/L 02/24/22 18:22 11,2-Dichloroethane ND 5.00 ug/L 02/24/22 18:22 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 18:22 11,1-Dichloroethene ND *+ *1 5.00 ug/L 02/24/22 18:22 11,2-Dichloropropane ND 5.00 ug/L 02/24/22 18:22 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/24/22 18:22 1trans-1,3-Dichloropropene ND 1000 ug/L 02/24/22 18:22 11,4-Dioxane ND *1 5.00 ug/L 02/24/22 18:22 1EthylbenzeneND 5.00 ug/L 02/24/22 18:22 12-Hexanone ND 5.00 ug/L 02/24/22 18:22 1IsopropylbenzeneND 25.0 ug/L 02/24/22 18:22 1Methyl acetate ND 5.00 ug/L 02/24/22 18:22 1MethylcyclohexaneND 5.00 ug/L 02/24/22 18:22 1Methylene Chloride ND 5.00 ug/L 02/24/22 18:22 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/24/22 18:22 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/22 18:22 1StyreneND 5.00 ug/L 02/24/22 18:22 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/24/22 18:22 1TetrachloroetheneND 5.00 ug/L 02/24/22 18:22 1TolueneND 5.00 ug/L 02/24/22 18:22 11,2,3-Trichlorobenzene ND *1 5.00 ug/L 02/24/22 18:22 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/24/22 18:22 11,1,1-Trichloroethane ND 5.00 ug/L 02/24/22 18:22 11,1,2-Trichloroethane ND 5.00 ug/L 02/24/22 18:22 1TrichloroetheneND 5.00 ug/L 02/24/22 18:22 1TrichlorofluoromethaneND 5.00 ug/L 02/24/22 18:22 11,1,2-Trichlorotrifluoroethane ND *1 5.00 ug/L 02/24/22 18:22 1Vinyl chloride ND *1 5.00 ug/L 02/24/22 18:22 1m-Xylene & p-Xylene ND Eurofins Pittsburgh Page 69 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-11Client Sample ID: MW-16 Matrix: WaterDate Collected: 02/16/22 10:15 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL o-Xylene ND 5.00 ug/L 02/24/22 18:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/24/22 18:22 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)89 52 -151 02/24/22 18:22 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)99 02/24/22 18:22 153-124 4-Bromofluorobenzene (Surr)91 02/24/22 18:22 149-118 Dibromofluoromethane (Surr)91 02/24/22 18:22 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL cis-1,2-Dichloroethene 60.9 50.0 ug/L 02/25/22 15:51 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)104 52 -151 02/25/22 15:51 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 02/25/22 15:51 1053-124 4-Bromofluorobenzene (Surr)94 02/25/22 15:51 1049-118 Dibromofluoromethane (Surr)93 02/25/22 15:51 1060-132 Lab Sample ID: 180-133839-12Client Sample ID: MW-16-c Matrix: WaterDate Collected: 02/16/22 15:00 Date Received: 02/17/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/25/22 18:36 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 120 50 -150 02/25/22 18:36 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)74 02/25/22 18:36 150-150 4-Bromofluorobenzene 93 02/25/22 18:36 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/26/22 12:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 12:10 1BenzeneND 5.00 ug/L 02/26/22 12:10 1ChlorobromomethaneND 5.00 ug/L 02/26/22 12:10 1DichlorobromomethaneND 5.00 ug/L 02/26/22 12:10 1BromoformND 5.00 ug/L 02/26/22 12:10 1BromomethaneND 5.00 ug/L 02/26/22 12:10 12-Butanone (MEK)ND 5.00 ug/L 02/26/22 12:10 1Carbon disulfide ND 5.00 ug/L 02/26/22 12:10 1Carbon tetrachloride ND 5.00 ug/L 02/26/22 12:10 1ChlorobenzeneND 5.00 ug/L 02/26/22 12:10 1ChlorodibromomethaneND 5.00 ug/L 02/26/22 12:10 1ChloroethaneND 5.00 ug/L 02/26/22 12:10 1ChloroformND 5.00 ug/L 02/26/22 12:10 1ChloromethaneND 5.00 ug/L 02/26/22 12:10 1CyclohexaneND 5.00 ug/L 02/26/22 12:10 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/26/22 12:10 11,2-Dichlorobenzene ND Eurofins Pittsburgh Page 70 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133839-12Client Sample ID: MW-16-c Matrix: WaterDate Collected: 02/16/22 15:00 Date Received: 02/17/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,3-Dichlorobenzene ND 5.00 ug/L 02/26/22 12:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 12:10 11,4-Dichlorobenzene ND 5.00 ug/L 02/26/22 12:10 1DichlorodifluoromethaneND 5.00 ug/L 02/26/22 12:10 11,1-Dichloroethane ND 5.00 ug/L 02/26/22 12:10 11,2-Dichloroethane ND 5.00 ug/L 02/26/22 12:10 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/26/22 12:10 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/26/22 12:10 11,1-Dichloroethene ND 5.00 ug/L 02/26/22 12:10 11,2-Dichloropropane ND 5.00 ug/L 02/26/22 12:10 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/26/22 12:10 1trans-1,3-Dichloropropene ND 1000 ug/L 02/26/22 12:10 11,4-Dioxane ND 5.00 ug/L 02/26/22 12:10 1EthylbenzeneND 5.00 ug/L 02/26/22 12:10 12-Hexanone ND 5.00 ug/L 02/26/22 12:10 1IsopropylbenzeneND 25.0 ug/L 02/26/22 12:10 1Methyl acetate ND 5.00 ug/L 02/26/22 12:10 1MethylcyclohexaneND 5.00 ug/L 02/26/22 12:10 1Methylene Chloride 5.36 5.00 ug/L 02/26/22 12:10 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/26/22 12:10 1Methyl tert-butyl ether ND 5.00 ug/L 02/26/22 12:10 1StyreneND 5.00 ug/L 02/26/22 12:10 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/26/22 12:10 1TetrachloroetheneND 5.00 ug/L 02/26/22 12:10 1TolueneND 5.00 ug/L 02/26/22 12:10 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/26/22 12:10 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/26/22 12:10 11,1,1-Trichloroethane ND 5.00 ug/L 02/26/22 12:10 11,1,2-Trichloroethane ND 5.00 ug/L 02/26/22 12:10 1TrichloroetheneND 5.00 ug/L 02/26/22 12:10 1TrichlorofluoromethaneND 5.00 ug/L 02/26/22 12:10 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/26/22 12:10 1Vinyl chloride ND 5.00 ug/L 02/26/22 12:10 1m-Xylene & p-Xylene ND 5.00 ug/L 02/26/22 12:10 1o-Xylene ND 5.00 ug/L 02/26/22 12:10 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)88 52 -151 02/26/22 12:10 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)91 02/26/22 12:10 153-124 4-Bromofluorobenzene (Surr)90 02/26/22 12:10 149-118 Dibromofluoromethane (Surr)87 02/26/22 12:10 160-132 Lab Sample ID: 180-133991-1Client Sample ID: MW-10 Matrix: WaterDate Collected: 02/17/22 09:45 Date Received: 02/21/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 1.92 1.00 0.300 ug/L 02/28/22 16:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins Pittsburgh Page 71 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-1Client Sample ID: MW-10 Matrix: WaterDate Collected: 02/17/22 09:45 Date Received: 02/21/22 09:30 Dibromofluoromethane 112 50 -150 02/28/22 16:55 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)72 02/28/22 16:55 150-150 4-Bromofluorobenzene 94 02/28/22 16:55 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/26/22 15:56 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 15:56 1BenzeneND 5.00 ug/L 02/26/22 15:56 1ChlorobromomethaneND 5.00 ug/L 02/26/22 15:56 1DichlorobromomethaneND 5.00 ug/L 02/26/22 15:56 1BromoformND 5.00 ug/L 02/26/22 15:56 1BromomethaneND 5.00 ug/L 02/26/22 15:56 12-Butanone (MEK)ND 5.00 ug/L 02/26/22 15:56 1Carbon disulfide ND 5.00 ug/L 02/26/22 15:56 1Carbon tetrachloride ND 5.00 ug/L 02/26/22 15:56 1ChlorobenzeneND 5.00 ug/L 02/26/22 15:56 1ChlorodibromomethaneND 5.00 ug/L 02/26/22 15:56 1ChloroethaneND 5.00 ug/L 02/26/22 15:56 1ChloroformND 5.00 ug/L 02/26/22 15:56 1ChloromethaneND 5.00 ug/L 02/26/22 15:56 1CyclohexaneND 5.00 ug/L 02/26/22 15:56 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/26/22 15:56 11,2-Dichlorobenzene ND 5.00 ug/L 02/26/22 15:56 11,3-Dichlorobenzene ND 5.00 ug/L 02/26/22 15:56 11,4-Dichlorobenzene ND 5.00 ug/L 02/26/22 15:56 1DichlorodifluoromethaneND 5.00 ug/L 02/26/22 15:56 11,1-Dichloroethane ND 5.00 ug/L 02/26/22 15:56 11,2-Dichloroethane ND 5.00 ug/L 02/26/22 15:56 1trans-1,2-Dichloroethene 10.3 5.00 ug/L 02/26/22 15:56 11,1-Dichloroethene ND 5.00 ug/L 02/26/22 15:56 11,2-Dichloropropane ND 5.00 ug/L 02/26/22 15:56 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/26/22 15:56 1trans-1,3-Dichloropropene ND 1000 ug/L 02/26/22 15:56 11,4-Dioxane ND 5.00 ug/L 02/26/22 15:56 1EthylbenzeneND 5.00 ug/L 02/26/22 15:56 12-Hexanone ND 5.00 ug/L 02/26/22 15:56 1IsopropylbenzeneND 25.0 ug/L 02/26/22 15:56 1Methyl acetate ND 5.00 ug/L 02/26/22 15:56 1MethylcyclohexaneND 5.00 ug/L 02/26/22 15:56 1Methylene Chloride ND 5.00 ug/L 02/26/22 15:56 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/26/22 15:56 1Methyl tert-butyl ether ND 5.00 ug/L 02/26/22 15:56 1StyreneND 5.00 ug/L 02/26/22 15:56 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/26/22 15:56 1TetrachloroetheneND 5.00 ug/L 02/26/22 15:56 1TolueneND 5.00 ug/L 02/26/22 15:56 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/26/22 15:56 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/26/22 15:56 11,1,1-Trichloroethane ND 5.00 ug/L 02/26/22 15:56 11,1,2-Trichloroethane ND Eurofins Pittsburgh Page 72 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-1Client Sample ID: MW-10 Matrix: WaterDate Collected: 02/17/22 09:45 Date Received: 02/21/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Trichloroethene ND 5.00 ug/L 02/26/22 15:56 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 15:56 1TrichlorofluoromethaneND 5.00 ug/L 02/26/22 15:56 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/26/22 15:56 1Vinyl chloride ND 5.00 ug/L 02/26/22 15:56 1m-Xylene & p-Xylene ND 5.00 ug/L 02/26/22 15:56 1o-Xylene ND 5.00 ug/L 02/26/22 15:56 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)97 52 -151 02/26/22 15:56 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)87 02/26/22 15:56 153-124 4-Bromofluorobenzene (Surr)94 02/26/22 15:56 149-118 Dibromofluoromethane (Surr)103 02/26/22 15:56 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL cis-1,2-Dichloroethene 317 200 ug/L 02/28/22 13:20 40 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)82 52 -151 02/28/22 13:20 40 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 02/28/22 13:20 4053-124 4-Bromofluorobenzene (Surr)102 02/28/22 13:20 4049-118 Dibromofluoromethane (Surr)92 02/28/22 13:20 4060-132 Lab Sample ID: 180-133991-2Client Sample ID: MW-10I Matrix: WaterDate Collected: 02/17/22 10:20 Date Received: 02/21/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 5.69 1.00 0.300 ug/L 02/28/22 17:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 111 50 -150 02/28/22 17:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)72 02/28/22 17:20 150-150 4-Bromofluorobenzene 94 02/28/22 17:20 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/26/22 15:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 15:31 1BenzeneND 5.00 ug/L 02/26/22 15:31 1ChlorobromomethaneND 5.00 ug/L 02/26/22 15:31 1DichlorobromomethaneND 5.00 ug/L 02/26/22 15:31 1BromoformND 5.00 ug/L 02/26/22 15:31 1BromomethaneND 5.00 ug/L 02/26/22 15:31 12-Butanone (MEK)ND 5.00 ug/L 02/26/22 15:31 1Carbon disulfide ND 5.00 ug/L 02/26/22 15:31 1Carbon tetrachloride ND 5.00 ug/L 02/26/22 15:31 1ChlorobenzeneND 5.00 ug/L 02/26/22 15:31 1ChlorodibromomethaneND 5.00 ug/L 02/26/22 15:31 1ChloroethaneND Eurofins Pittsburgh Page 73 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-2Client Sample ID: MW-10I Matrix: WaterDate Collected: 02/17/22 10:20 Date Received: 02/21/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Chloroform ND 5.00 ug/L 02/26/22 15:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 15:31 1ChloromethaneND 5.00 ug/L 02/26/22 15:31 1CyclohexaneND 5.00 ug/L 02/26/22 15:31 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/26/22 15:31 11,2-Dichlorobenzene ND 5.00 ug/L 02/26/22 15:31 11,3-Dichlorobenzene ND 5.00 ug/L 02/26/22 15:31 11,4-Dichlorobenzene ND 5.00 ug/L 02/26/22 15:31 1DichlorodifluoromethaneND 5.00 ug/L 02/26/22 15:31 11,1-Dichloroethane ND 5.00 ug/L 02/26/22 15:31 11,2-Dichloroethane ND 5.00 ug/L 02/26/22 15:31 1trans-1,2-Dichloroethene 21.1 5.00 ug/L 02/26/22 15:31 11,1-Dichloroethene 10.1 5.00 ug/L 02/26/22 15:31 11,2-Dichloropropane ND 5.00 ug/L 02/26/22 15:31 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/26/22 15:31 1trans-1,3-Dichloropropene ND 1000 ug/L 02/26/22 15:31 11,4-Dioxane ND 5.00 ug/L 02/26/22 15:31 1EthylbenzeneND 5.00 ug/L 02/26/22 15:31 12-Hexanone ND 5.00 ug/L 02/26/22 15:31 1IsopropylbenzeneND 25.0 ug/L 02/26/22 15:31 1Methyl acetate ND 5.00 ug/L 02/26/22 15:31 1MethylcyclohexaneND 5.00 ug/L 02/26/22 15:31 1Methylene Chloride ND 5.00 ug/L 02/26/22 15:31 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/26/22 15:31 1Methyl tert-butyl ether ND 5.00 ug/L 02/26/22 15:31 1StyreneND 5.00 ug/L 02/26/22 15:31 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/26/22 15:31 1TetrachloroetheneND 5.00 ug/L 02/26/22 15:31 1TolueneND 5.00 ug/L 02/26/22 15:31 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/26/22 15:31 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/26/22 15:31 11,1,1-Trichloroethane ND 5.00 ug/L 02/26/22 15:31 11,1,2-Trichloroethane ND 5.00 ug/L 02/26/22 15:31 1Trichloroethene33.0 5.00 ug/L 02/26/22 15:31 1TrichlorofluoromethaneND 5.00 ug/L 02/26/22 15:31 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/26/22 15:31 1Vinyl chloride ND 5.00 ug/L 02/26/22 15:31 1m-Xylene & p-Xylene ND 5.00 ug/L 02/26/22 15:31 1o-Xylene ND 5.00 ug/L 02/26/22 15:31 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)90 52 -151 02/26/22 15:31 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 02/26/22 15:31 153-124 4-Bromofluorobenzene (Surr)95 02/26/22 15:31 149-118 Dibromofluoromethane (Surr)95 02/26/22 15:31 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL cis-1,2-Dichloroethene 609 500 ug/L 02/28/22 14:51 100 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins Pittsburgh Page 74 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-2Client Sample ID: MW-10I Matrix: WaterDate Collected: 02/17/22 10:20 Date Received: 02/21/22 09:30 1,2-Dichloroethane-d4 (Surr)84 52 -151 02/28/22 14:51 100 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 02/28/22 14:51 10053-124 4-Bromofluorobenzene (Surr)95 02/28/22 14:51 10049-118 Dibromofluoromethane (Surr)87 02/28/22 14:51 10060-132 Lab Sample ID: 180-133991-3Client Sample ID: MW-14 Matrix: WaterDate Collected: 02/17/22 09:40 Date Received: 02/21/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/28/22 17:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 113 50 -150 02/28/22 17:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)71 02/28/22 17:45 150-150 4-Bromofluorobenzene 94 02/28/22 17:45 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/28/22 12:24 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/28/22 12:24 1BenzeneND 5.00 ug/L 02/28/22 12:24 1ChlorobromomethaneND 5.00 ug/L 02/28/22 12:24 1DichlorobromomethaneND 5.00 ug/L 02/28/22 12:24 1BromoformND 5.00 ug/L 02/28/22 12:24 1BromomethaneND 5.00 ug/L 02/28/22 12:24 12-Butanone (MEK)ND 5.00 ug/L 02/28/22 12:24 1Carbon disulfide ND 5.00 ug/L 02/28/22 12:24 1Carbon tetrachloride ND 5.00 ug/L 02/28/22 12:24 1ChlorobenzeneND 5.00 ug/L 02/28/22 12:24 1ChlorodibromomethaneND 5.00 ug/L 02/28/22 12:24 1ChloroethaneND 5.00 ug/L 02/28/22 12:24 1ChloroformND 5.00 ug/L 02/28/22 12:24 1ChloromethaneND 5.00 ug/L 02/28/22 12:24 1CyclohexaneND 5.00 ug/L 02/28/22 12:24 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/28/22 12:24 11,2-Dichlorobenzene ND 5.00 ug/L 02/28/22 12:24 11,3-Dichlorobenzene ND 5.00 ug/L 02/28/22 12:24 11,4-Dichlorobenzene ND 5.00 ug/L 02/28/22 12:24 1DichlorodifluoromethaneND 5.00 ug/L 02/28/22 12:24 11,1-Dichloroethane ND 5.00 ug/L 02/28/22 12:24 11,2-Dichloroethane ND 5.00 ug/L 02/28/22 12:24 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/28/22 12:24 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/28/22 12:24 11,1-Dichloroethene ND 5.00 ug/L 02/28/22 12:24 11,2-Dichloropropane ND 5.00 ug/L 02/28/22 12:24 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/28/22 12:24 1trans-1,3-Dichloropropene ND 1000 ug/L 02/28/22 12:24 11,4-Dioxane ND *+ 5.00 ug/L 02/28/22 12:24 1EthylbenzeneND 5.00 ug/L 02/28/22 12:24 12-Hexanone ND Eurofins Pittsburgh Page 75 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-3Client Sample ID: MW-14 Matrix: WaterDate Collected: 02/17/22 09:40 Date Received: 02/21/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Isopropylbenzene ND 5.00 ug/L 02/28/22 12:24 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 25.0 ug/L 02/28/22 12:24 1Methyl acetate ND 5.00 ug/L 02/28/22 12:24 1MethylcyclohexaneND 5.00 ug/L 02/28/22 12:24 1Methylene Chloride ND 5.00 ug/L 02/28/22 12:24 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/28/22 12:24 1Methyl tert-butyl ether ND 5.00 ug/L 02/28/22 12:24 1StyreneND 5.00 ug/L 02/28/22 12:24 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/28/22 12:24 1TetrachloroetheneND 5.00 ug/L 02/28/22 12:24 1TolueneND 5.00 ug/L 02/28/22 12:24 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/28/22 12:24 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/28/22 12:24 11,1,1-Trichloroethane ND 5.00 ug/L 02/28/22 12:24 11,1,2-Trichloroethane ND 5.00 ug/L 02/28/22 12:24 1TrichloroetheneND 5.00 ug/L 02/28/22 12:24 1TrichlorofluoromethaneND 5.00 ug/L 02/28/22 12:24 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/28/22 12:24 1Vinyl chloride ND 5.00 ug/L 02/28/22 12:24 1m-Xylene & p-Xylene ND 5.00 ug/L 02/28/22 12:24 1o-Xylene ND 5.00 ug/L 02/28/22 12:24 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)101 52 -151 02/28/22 12:24 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)99 02/28/22 12:24 153-124 4-Bromofluorobenzene (Surr)96 02/28/22 12:24 149-118 Dibromofluoromethane (Surr)97 02/28/22 12:24 160-132 Lab Sample ID: 180-133991-4Client Sample ID: MW-14-C Matrix: WaterDate Collected: 02/17/22 13:15 Date Received: 02/21/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/28/22 13:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 116 50 -150 02/28/22 13:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)71 02/28/22 13:35 150-150 4-Bromofluorobenzene 94 02/28/22 13:35 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/26/22 11:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 11:45 1BenzeneND 5.00 ug/L 02/26/22 11:45 1ChlorobromomethaneND 5.00 ug/L 02/26/22 11:45 1DichlorobromomethaneND 5.00 ug/L 02/26/22 11:45 1BromoformND 5.00 ug/L 02/26/22 11:45 1BromomethaneND 5.00 ug/L 02/26/22 11:45 12-Butanone (MEK)ND 5.00 ug/L 02/26/22 11:45 1Carbon disulfide ND Eurofins Pittsburgh Page 76 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-4Client Sample ID: MW-14-C Matrix: WaterDate Collected: 02/17/22 13:15 Date Received: 02/21/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Carbon tetrachloride ND 5.00 ug/L 02/26/22 11:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 11:45 1ChlorobenzeneND 5.00 ug/L 02/26/22 11:45 1ChlorodibromomethaneND 5.00 ug/L 02/26/22 11:45 1ChloroethaneND 5.00 ug/L 02/26/22 11:45 1ChloroformND 5.00 ug/L 02/26/22 11:45 1ChloromethaneND 5.00 ug/L 02/26/22 11:45 1CyclohexaneND 5.00 ug/L 02/26/22 11:45 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/26/22 11:45 11,2-Dichlorobenzene ND 5.00 ug/L 02/26/22 11:45 11,3-Dichlorobenzene ND 5.00 ug/L 02/26/22 11:45 11,4-Dichlorobenzene ND 5.00 ug/L 02/26/22 11:45 1DichlorodifluoromethaneND 5.00 ug/L 02/26/22 11:45 11,1-Dichloroethane ND 5.00 ug/L 02/26/22 11:45 11,2-Dichloroethane ND 5.00 ug/L 02/26/22 11:45 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/26/22 11:45 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/26/22 11:45 11,1-Dichloroethene ND 5.00 ug/L 02/26/22 11:45 11,2-Dichloropropane ND 5.00 ug/L 02/26/22 11:45 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/26/22 11:45 1trans-1,3-Dichloropropene ND 1000 ug/L 02/26/22 11:45 11,4-Dioxane ND 5.00 ug/L 02/26/22 11:45 1EthylbenzeneND 5.00 ug/L 02/26/22 11:45 12-Hexanone ND 5.00 ug/L 02/26/22 11:45 1IsopropylbenzeneND 25.0 ug/L 02/26/22 11:45 1Methyl acetate ND 5.00 ug/L 02/26/22 11:45 1MethylcyclohexaneND 5.00 ug/L 02/26/22 11:45 1Methylene Chloride 5.51 5.00 ug/L 02/26/22 11:45 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/26/22 11:45 1Methyl tert-butyl ether ND 5.00 ug/L 02/26/22 11:45 1StyreneND 5.00 ug/L 02/26/22 11:45 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/26/22 11:45 1TetrachloroetheneND 5.00 ug/L 02/26/22 11:45 1TolueneND 5.00 ug/L 02/26/22 11:45 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/26/22 11:45 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/26/22 11:45 11,1,1-Trichloroethane ND 5.00 ug/L 02/26/22 11:45 11,1,2-Trichloroethane ND 5.00 ug/L 02/26/22 11:45 1TrichloroetheneND 5.00 ug/L 02/26/22 11:45 1TrichlorofluoromethaneND 5.00 ug/L 02/26/22 11:45 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/26/22 11:45 1Vinyl chloride ND 5.00 ug/L 02/26/22 11:45 1m-Xylene & p-Xylene ND 5.00 ug/L 02/26/22 11:45 1o-Xylene ND 5.00 ug/L 02/26/22 11:45 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)97 52 -151 02/26/22 11:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)95 02/26/22 11:45 153-124 4-Bromofluorobenzene (Surr)95 02/26/22 11:45 149-118 Dibromofluoromethane (Surr)95 02/26/22 11:45 160-132 Eurofins Pittsburgh Page 77 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-5Client Sample ID: MW-14I Matrix: WaterDate Collected: 02/17/22 10:35 Date Received: 02/21/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 21.5 1.00 0.300 ug/L 02/28/22 18:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 111 50 -150 02/28/22 18:10 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)72 02/28/22 18:10 150-150 4-Bromofluorobenzene 94 02/28/22 18:10 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/26/22 13:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 13:25 1BenzeneND 5.00 ug/L 02/26/22 13:25 1ChlorobromomethaneND 5.00 ug/L 02/26/22 13:25 1DichlorobromomethaneND 5.00 ug/L 02/26/22 13:25 1BromoformND 5.00 ug/L 02/26/22 13:25 1BromomethaneND 5.00 ug/L 02/26/22 13:25 12-Butanone (MEK)ND 5.00 ug/L 02/26/22 13:25 1Carbon disulfide ND 5.00 ug/L 02/26/22 13:25 1Carbon tetrachloride ND 5.00 ug/L 02/26/22 13:25 1ChlorobenzeneND 5.00 ug/L 02/26/22 13:25 1ChlorodibromomethaneND 5.00 ug/L 02/26/22 13:25 1ChloroethaneND 5.00 ug/L 02/26/22 13:25 1ChloroformND 5.00 ug/L 02/26/22 13:25 1ChloromethaneND 5.00 ug/L 02/26/22 13:25 1CyclohexaneND 5.00 ug/L 02/26/22 13:25 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/26/22 13:25 11,2-Dichlorobenzene ND 5.00 ug/L 02/26/22 13:25 11,3-Dichlorobenzene ND 5.00 ug/L 02/26/22 13:25 11,4-Dichlorobenzene ND 5.00 ug/L 02/26/22 13:25 1DichlorodifluoromethaneND 5.00 ug/L 02/26/22 13:25 11,1-Dichloroethane 32.4 5.00 ug/L 02/26/22 13:25 11,2-Dichloroethane 5.17 5.00 ug/L 02/26/22 13:25 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/26/22 13:25 11,1-Dichloroethene 23.0 5.00 ug/L 02/26/22 13:25 11,2-Dichloropropane ND 5.00 ug/L 02/26/22 13:25 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/26/22 13:25 1trans-1,3-Dichloropropene ND 1000 ug/L 02/26/22 13:25 11,4-Dioxane ND 5.00 ug/L 02/26/22 13:25 1EthylbenzeneND 5.00 ug/L 02/26/22 13:25 12-Hexanone ND 5.00 ug/L 02/26/22 13:25 1IsopropylbenzeneND 25.0 ug/L 02/26/22 13:25 1Methyl acetate ND 5.00 ug/L 02/26/22 13:25 1MethylcyclohexaneND 5.00 ug/L 02/26/22 13:25 1Methylene Chloride ND 5.00 ug/L 02/26/22 13:25 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/26/22 13:25 1Methyl tert-butyl ether ND 5.00 ug/L 02/26/22 13:25 1StyreneND 5.00 ug/L 02/26/22 13:25 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/26/22 13:25 1Tetrachloroethene18.9 5.00 ug/L 02/26/22 13:25 1TolueneND 5.00 ug/L 02/26/22 13:25 11,2,3-Trichlorobenzene ND Eurofins Pittsburgh Page 78 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-5Client Sample ID: MW-14I Matrix: WaterDate Collected: 02/17/22 10:35 Date Received: 02/21/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2,4-Trichlorobenzene ND 5.00 ug/L 02/26/22 13:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 13:25 11,1,1-Trichloroethane ND 5.00 ug/L 02/26/22 13:25 11,1,2-Trichloroethane ND 5.00 ug/L 02/26/22 13:25 1TrichlorofluoromethaneND 5.00 ug/L 02/26/22 13:25 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/26/22 13:25 1Vinyl chloride 6.49 5.00 ug/L 02/26/22 13:25 1m-Xylene & p-Xylene ND 5.00 ug/L 02/26/22 13:25 1o-Xylene ND 5.00 ug/L 02/26/22 13:25 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)78 52 -151 02/26/22 13:25 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 02/26/22 13:25 153-124 4-Bromofluorobenzene (Surr)97 02/26/22 13:25 149-118 Dibromofluoromethane (Surr)86 02/26/22 13:25 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL cis-1,2-Dichloroethene 447 100 ug/L 02/28/22 13:45 20 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)98 52 -151 02/28/22 13:45 20 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 02/28/22 13:45 2053-124 4-Bromofluorobenzene (Surr)91 02/28/22 13:45 2049-118 Dibromofluoromethane (Surr)99 02/28/22 13:45 2060-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL2 RL MDL Trichloroethene 51.7 10.0 ug/L 03/01/22 18:17 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 52 -151 03/01/22 18:17 2 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 03/01/22 18:17 253-124 4-Bromofluorobenzene (Surr)76 03/01/22 18:17 249-118 Dibromofluoromethane (Surr)108 03/01/22 18:17 260-132 Lab Sample ID: 180-133991-6Client Sample ID: MW-15 Matrix: WaterDate Collected: 02/17/22 11:35 Date Received: 02/21/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 0.825 J 1.00 0.300 ug/L 02/28/22 18:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 115 50 -150 02/28/22 18:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)71 02/28/22 18:35 150-150 4-Bromofluorobenzene 94 02/28/22 18:35 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/25/22 17:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins Pittsburgh Page 79 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-6Client Sample ID: MW-15 Matrix: WaterDate Collected: 02/17/22 11:35 Date Received: 02/21/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Benzene ND 5.00 ug/L 02/25/22 17:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/25/22 17:32 1ChlorobromomethaneND 5.00 ug/L 02/25/22 17:32 1DichlorobromomethaneND 5.00 ug/L 02/25/22 17:32 1BromoformND 5.00 ug/L 02/25/22 17:32 1BromomethaneND 5.00 ug/L 02/25/22 17:32 12-Butanone (MEK)ND 5.00 ug/L 02/25/22 17:32 1Carbon disulfide ND 5.00 ug/L 02/25/22 17:32 1Carbon tetrachloride ND 5.00 ug/L 02/25/22 17:32 1ChlorobenzeneND 5.00 ug/L 02/25/22 17:32 1ChlorodibromomethaneND 5.00 ug/L 02/25/22 17:32 1ChloroethaneND 5.00 ug/L 02/25/22 17:32 1ChloroformND 5.00 ug/L 02/25/22 17:32 1ChloromethaneND 5.00 ug/L 02/25/22 17:32 1CyclohexaneND 5.00 ug/L 02/25/22 17:32 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/25/22 17:32 11,2-Dichlorobenzene ND 5.00 ug/L 02/25/22 17:32 11,3-Dichlorobenzene ND 5.00 ug/L 02/25/22 17:32 11,4-Dichlorobenzene ND 5.00 ug/L 02/25/22 17:32 1DichlorodifluoromethaneND 5.00 ug/L 02/25/22 17:32 11,1-Dichloroethane ND 5.00 ug/L 02/25/22 17:32 11,2-Dichloroethane ND 5.00 ug/L 02/25/22 17:32 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/25/22 17:32 11,1-Dichloroethene ND 5.00 ug/L 02/25/22 17:32 11,2-Dichloropropane ND 5.00 ug/L 02/25/22 17:32 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/25/22 17:32 1trans-1,3-Dichloropropene ND 1000 ug/L 02/25/22 17:32 11,4-Dioxane ND 5.00 ug/L 02/25/22 17:32 1EthylbenzeneND 5.00 ug/L 02/25/22 17:32 12-Hexanone ND 5.00 ug/L 02/25/22 17:32 1IsopropylbenzeneND 25.0 ug/L 02/25/22 17:32 1Methyl acetate ND 5.00 ug/L 02/25/22 17:32 1MethylcyclohexaneND 5.00 ug/L 02/25/22 17:32 1Methylene Chloride ND 5.00 ug/L 02/25/22 17:32 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/25/22 17:32 1Methyl tert-butyl ether ND 5.00 ug/L 02/25/22 17:32 1StyreneND 5.00 ug/L 02/25/22 17:32 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/25/22 17:32 1TetrachloroetheneND 5.00 ug/L 02/25/22 17:32 1TolueneND 5.00 ug/L 02/25/22 17:32 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/25/22 17:32 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/25/22 17:32 11,1,1-Trichloroethane ND 5.00 ug/L 02/25/22 17:32 11,1,2-Trichloroethane ND 5.00 ug/L 02/25/22 17:32 1TrichloroetheneND 5.00 ug/L 02/25/22 17:32 1TrichlorofluoromethaneND 5.00 ug/L 02/25/22 17:32 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/25/22 17:32 1Vinyl chloride ND 5.00 ug/L 02/25/22 17:32 1m-Xylene & p-Xylene ND 5.00 ug/L 02/25/22 17:32 1o-Xylene ND Eurofins Pittsburgh Page 80 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-6Client Sample ID: MW-15 Matrix: WaterDate Collected: 02/17/22 11:35 Date Received: 02/21/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2-Dibromoethane ND 5.00 ug/L 02/25/22 17:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)89 52 -151 02/25/22 17:32 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 02/25/22 17:32 153-124 4-Bromofluorobenzene (Surr)93 02/25/22 17:32 149-118 Dibromofluoromethane (Surr)88 02/25/22 17:32 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA RL MDL cis-1,2-Dichloroethene 8.43 5.00 ug/L 02/28/22 14:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)94 52 -151 02/28/22 14:25 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)81 02/28/22 14:25 153-124 4-Bromofluorobenzene (Surr)81 02/28/22 14:25 149-118 Dibromofluoromethane (Surr)85 02/28/22 14:25 160-132 Lab Sample ID: 180-133991-7Client Sample ID: MW-15I Matrix: WaterDate Collected: 02/17/22 12:20 Date Received: 02/21/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 2.34 1.00 0.300 ug/L 02/28/22 14:00 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 117 50 -150 02/28/22 14:00 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)72 02/28/22 14:00 150-150 4-Bromofluorobenzene 93 02/28/22 14:00 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND F2 20.0 ug/L 02/28/22 12:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/28/22 12:49 1BenzeneND 5.00 ug/L 02/28/22 12:49 1ChlorobromomethaneND 5.00 ug/L 02/28/22 12:49 1DichlorobromomethaneND 5.00 ug/L 02/28/22 12:49 1BromoformND 5.00 ug/L 02/28/22 12:49 1BromomethaneND 5.00 ug/L 02/28/22 12:49 12-Butanone (MEK)ND 5.00 ug/L 02/28/22 12:49 1Carbon disulfide ND 5.00 ug/L 02/28/22 12:49 1Carbon tetrachloride ND 5.00 ug/L 02/28/22 12:49 1ChlorobenzeneND 5.00 ug/L 02/28/22 12:49 1ChlorodibromomethaneND 5.00 ug/L 02/28/22 12:49 1ChloroethaneND 5.00 ug/L 02/28/22 12:49 1ChloroformND 5.00 ug/L 02/28/22 12:49 1ChloromethaneND 5.00 ug/L 02/28/22 12:49 1CyclohexaneND 5.00 ug/L 02/28/22 12:49 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/28/22 12:49 11,2-Dichlorobenzene ND 5.00 ug/L 02/28/22 12:49 11,3-Dichlorobenzene ND Eurofins Pittsburgh Page 81 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-7Client Sample ID: MW-15I Matrix: WaterDate Collected: 02/17/22 12:20 Date Received: 02/21/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,4-Dichlorobenzene ND 5.00 ug/L 02/28/22 12:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/28/22 12:49 1DichlorodifluoromethaneND 5.00 ug/L 02/28/22 12:49 11,1-Dichloroethane ND F1 5.00 ug/L 02/28/22 12:49 11,2-Dichloroethane ND 5.00 ug/L 02/28/22 12:49 1cis-1,2-Dichloroethene 36.3 F1 5.00 ug/L 02/28/22 12:49 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/28/22 12:49 11,1-Dichloroethene ND 5.00 ug/L 02/28/22 12:49 11,2-Dichloropropane ND 5.00 ug/L 02/28/22 12:49 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/28/22 12:49 1trans-1,3-Dichloropropene ND 1000 ug/L 02/28/22 12:49 11,4-Dioxane ND *+ 5.00 ug/L 02/28/22 12:49 1EthylbenzeneND 5.00 ug/L 02/28/22 12:49 12-Hexanone ND 5.00 ug/L 02/28/22 12:49 1IsopropylbenzeneND 25.0 ug/L 02/28/22 12:49 1Methyl acetate ND 5.00 ug/L 02/28/22 12:49 1MethylcyclohexaneND 5.00 ug/L 02/28/22 12:49 1Methylene Chloride ND 5.00 ug/L 02/28/22 12:49 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/28/22 12:49 1Methyl tert-butyl ether ND 5.00 ug/L 02/28/22 12:49 1StyreneND 5.00 ug/L 02/28/22 12:49 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/28/22 12:49 1TetrachloroetheneND 5.00 ug/L 02/28/22 12:49 1TolueneND 5.00 ug/L 02/28/22 12:49 11,2,3-Trichlorobenzene ND F2 5.00 ug/L 02/28/22 12:49 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/28/22 12:49 11,1,1-Trichloroethane ND 5.00 ug/L 02/28/22 12:49 11,1,2-Trichloroethane ND 5.00 ug/L 02/28/22 12:49 1TrichloroetheneND 5.00 ug/L 02/28/22 12:49 1TrichlorofluoromethaneND 5.00 ug/L 02/28/22 12:49 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/28/22 12:49 1Vinyl chloride 12.6 F1 5.00 ug/L 02/28/22 12:49 1m-Xylene & p-Xylene ND 5.00 ug/L 02/28/22 12:49 1o-Xylene ND 5.00 ug/L 02/28/22 12:49 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)91 52 -151 02/28/22 12:49 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)91 02/28/22 12:49 153-124 4-Bromofluorobenzene (Surr)96 02/28/22 12:49 149-118 Dibromofluoromethane (Surr)93 02/28/22 12:49 160-132 Lab Sample ID: 180-133991-8Client Sample ID: MW-18I Matrix: WaterDate Collected: 02/17/22 11:50 Date Received: 02/21/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 6.68 F1 1.00 0.300 ug/L 02/28/22 14:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins Pittsburgh Page 82 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-8Client Sample ID: MW-18I Matrix: WaterDate Collected: 02/17/22 11:50 Date Received: 02/21/22 09:30 Dibromofluoromethane 114 50 -150 02/28/22 14:25 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)72 02/28/22 14:25 150-150 4-Bromofluorobenzene 93 02/28/22 14:25 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/26/22 12:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 12:35 1BenzeneND F2 5.00 ug/L 02/26/22 12:35 1ChlorobromomethaneND F2 5.00 ug/L 02/26/22 12:35 1DichlorobromomethaneND 5.00 ug/L 02/26/22 12:35 1BromoformND 5.00 ug/L 02/26/22 12:35 1BromomethaneND 5.00 ug/L 02/26/22 12:35 12-Butanone (MEK)ND 5.00 ug/L 02/26/22 12:35 1Carbon disulfide ND 5.00 ug/L 02/26/22 12:35 1Carbon tetrachloride ND 5.00 ug/L 02/26/22 12:35 1ChlorobenzeneND 5.00 ug/L 02/26/22 12:35 1ChlorodibromomethaneND F2 5.00 ug/L 02/26/22 12:35 1ChloroethaneND 5.00 ug/L 02/26/22 12:35 1ChloroformND F2 5.00 ug/L 02/26/22 12:35 1ChloromethaneND 5.00 ug/L 02/26/22 12:35 1CyclohexaneND 5.00 ug/L 02/26/22 12:35 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/26/22 12:35 11,2-Dichlorobenzene ND 5.00 ug/L 02/26/22 12:35 11,3-Dichlorobenzene ND 5.00 ug/L 02/26/22 12:35 11,4-Dichlorobenzene ND 5.00 ug/L 02/26/22 12:35 1DichlorodifluoromethaneND 5.00 ug/L 02/26/22 12:35 11,1-Dichloroethane 8.12 F1 F2 5.00 ug/L 02/26/22 12:35 11,2-Dichloroethane ND F2 5.00 ug/L 02/26/22 12:35 1cis-1,2-Dichloroethene ND F2 F1 5.00 ug/L 02/26/22 12:35 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/26/22 12:35 11,1-Dichloroethene ND 5.00 ug/L 02/26/22 12:35 11,2-Dichloropropane ND 5.00 ug/L 02/26/22 12:35 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/26/22 12:35 1trans-1,3-Dichloropropene ND F2 1000 ug/L 02/26/22 12:35 11,4-Dioxane ND 5.00 ug/L 02/26/22 12:35 1EthylbenzeneND 5.00 ug/L 02/26/22 12:35 12-Hexanone ND 5.00 ug/L 02/26/22 12:35 1IsopropylbenzeneND 25.0 ug/L 02/26/22 12:35 1Methyl acetate ND F2 5.00 ug/L 02/26/22 12:35 1MethylcyclohexaneND 5.00 ug/L 02/26/22 12:35 1Methylene Chloride ND 5.00 ug/L 02/26/22 12:35 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/26/22 12:35 1Methyl tert-butyl ether ND F2 5.00 ug/L 02/26/22 12:35 1StyreneND 5.00 ug/L 02/26/22 12:35 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/26/22 12:35 1TetrachloroetheneND 5.00 ug/L 02/26/22 12:35 1TolueneND 5.00 ug/L 02/26/22 12:35 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/26/22 12:35 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/26/22 12:35 11,1,1-Trichloroethane ND F2 Eurofins Pittsburgh Page 83 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-8Client Sample ID: MW-18I Matrix: WaterDate Collected: 02/17/22 11:50 Date Received: 02/21/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,1,2-Trichloroethane ND 5.00 ug/L 02/26/22 12:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 12:35 1TrichloroetheneND 5.00 ug/L 02/26/22 12:35 1TrichlorofluoromethaneND 5.00 ug/L 02/26/22 12:35 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/26/22 12:35 1Vinyl chloride ND 5.00 ug/L 02/26/22 12:35 1m-Xylene & p-Xylene ND 5.00 ug/L 02/26/22 12:35 1o-Xylene ND 5.00 ug/L 02/26/22 12:35 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)82 52 -151 02/26/22 12:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 02/26/22 12:35 153-124 4-Bromofluorobenzene (Surr)93 02/26/22 12:35 149-118 Dibromofluoromethane (Surr)81 02/26/22 12:35 160-132 Lab Sample ID: 180-133991-9Client Sample ID: MW-19I Matrix: WaterDate Collected: 02/17/22 12:50 Date Received: 02/21/22 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 43.8 1.00 0.300 ug/L 02/28/22 19:00 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 112 50 -150 02/28/22 19:00 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)73 02/28/22 19:00 150-150 4-Bromofluorobenzene 93 02/28/22 19:00 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 02/26/22 16:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 16:22 1BenzeneND 5.00 ug/L 02/26/22 16:22 1ChlorobromomethaneND 5.00 ug/L 02/26/22 16:22 1DichlorobromomethaneND 5.00 ug/L 02/26/22 16:22 1BromoformND 5.00 ug/L 02/26/22 16:22 1BromomethaneND 5.00 ug/L 02/26/22 16:22 12-Butanone (MEK)ND 5.00 ug/L 02/26/22 16:22 1Carbon disulfide ND 5.00 ug/L 02/26/22 16:22 1Carbon tetrachloride ND 5.00 ug/L 02/26/22 16:22 1ChlorobenzeneND 5.00 ug/L 02/26/22 16:22 1ChlorodibromomethaneND 5.00 ug/L 02/26/22 16:22 1ChloroethaneND 5.00 ug/L 02/26/22 16:22 1ChloroformND 5.00 ug/L 02/26/22 16:22 1ChloromethaneND 5.00 ug/L 02/26/22 16:22 1CyclohexaneND 5.00 ug/L 02/26/22 16:22 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/26/22 16:22 11,2-Dichlorobenzene ND 5.00 ug/L 02/26/22 16:22 11,3-Dichlorobenzene ND 5.00 ug/L 02/26/22 16:22 11,4-Dichlorobenzene ND 5.00 ug/L 02/26/22 16:22 1DichlorodifluoromethaneND 5.00 ug/L 02/26/22 16:22 11,1-Dichloroethane 28.8 Eurofins Pittsburgh Page 84 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-133991-9Client Sample ID: MW-19I Matrix: WaterDate Collected: 02/17/22 12:50 Date Received: 02/21/22 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2-Dichloroethane 6.73 5.00 ug/L 02/26/22 16:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 02/26/22 16:22 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/26/22 16:22 11,1-Dichloroethene 29.6 5.00 ug/L 02/26/22 16:22 11,2-Dichloropropane ND 5.00 ug/L 02/26/22 16:22 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/26/22 16:22 1trans-1,3-Dichloropropene ND 1000 ug/L 02/26/22 16:22 11,4-Dioxane ND 5.00 ug/L 02/26/22 16:22 1EthylbenzeneND 5.00 ug/L 02/26/22 16:22 12-Hexanone ND 5.00 ug/L 02/26/22 16:22 1IsopropylbenzeneND 25.0 ug/L 02/26/22 16:22 1Methyl acetate ND 5.00 ug/L 02/26/22 16:22 1MethylcyclohexaneND 5.00 ug/L 02/26/22 16:22 1Methylene Chloride ND 5.00 ug/L 02/26/22 16:22 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 02/26/22 16:22 1Methyl tert-butyl ether ND 5.00 ug/L 02/26/22 16:22 1StyreneND 5.00 ug/L 02/26/22 16:22 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/26/22 16:22 1Tetrachloroethene12.7 5.00 ug/L 02/26/22 16:22 1TolueneND 5.00 ug/L 02/26/22 16:22 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/26/22 16:22 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/26/22 16:22 11,1,1-Trichloroethane ND 5.00 ug/L 02/26/22 16:22 11,1,2-Trichloroethane ND 5.00 ug/L 02/26/22 16:22 1TrichlorofluoromethaneND 5.00 ug/L 02/26/22 16:22 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/26/22 16:22 1Vinyl chloride 11.8 5.00 ug/L 02/26/22 16:22 1m-Xylene & p-Xylene ND 5.00 ug/L 02/26/22 16:22 1o-Xylene ND 5.00 ug/L 02/26/22 16:22 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)94 52 -151 02/26/22 16:22 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)107 02/26/22 16:22 153-124 4-Bromofluorobenzene (Surr)96 02/26/22 16:22 149-118 Dibromofluoromethane (Surr)99 02/26/22 16:22 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL cis-1,2-Dichloroethene 123 50.0 ug/L 03/01/22 12:48 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 50.0 ug/L 03/01/22 12:48 10TrichloroetheneND 1,2-Dichloroethane-d4 (Surr)87 52 -151 03/01/22 12:48 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 03/01/22 12:48 1053-124 4-Bromofluorobenzene (Surr)103 03/01/22 12:48 1049-118 Dibromofluoromethane (Surr)92 03/01/22 12:48 1060-132 Eurofins Pittsburgh Page 85 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS Client Sample ID: Method BlankLab Sample ID: MB 400-567694/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 567694 RL MDL 1,1,1-Trichloroethane ND 1.00 ug/L 02/24/22 11:59 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 02/24/22 11:59 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 02/24/22 11:59 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/24/22 11:59 11,1,2-Trichloroethane ND 1.00 ug/L 02/24/22 11:59 11,1-Dichloroethane ND 1.00 ug/L 02/24/22 11:59 11,1-Dichloroethene ND 1.00 ug/L 02/24/22 11:59 11,2,3-Trichlorobenzene ND 1.00 ug/L 02/24/22 11:59 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/24/22 11:59 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 02/24/22 11:59 11,2-Dichlorobenzene ND 1.00 ug/L 02/24/22 11:59 11,2-Dichloroethane ND 1.00 ug/L 02/24/22 11:59 11,2-Dichloropropane ND 1.00 ug/L 02/24/22 11:59 11,3-Dichlorobenzene ND 1.00 ug/L 02/24/22 11:59 11,4-Dichlorobenzene ND 400 ug/L 02/24/22 11:59 11,4-Dioxane ND 25.0 ug/L 02/24/22 11:59 12-Butanone (MEK) ND 25.0 ug/L 02/24/22 11:59 12-Hexanone ND 25.0 ug/L 02/24/22 11:59 14-Methyl-2-pentanone (MIBK) ND 25.0 ug/L 02/24/22 11:59 1Acetone ND 1.00 ug/L 02/24/22 11:59 1Benzene ND 5.00 ug/L 02/24/22 11:59 1Bromoform ND 1.00 ug/L 02/24/22 11:59 1Bromomethane ND 1.00 ug/L 02/24/22 11:59 1Carbon disulfide ND 1.00 ug/L 02/24/22 11:59 1Carbon tetrachloride ND 1.00 ug/L 02/24/22 11:59 1Chlorobenzene ND 1.00 ug/L 02/24/22 11:59 1Chlorobromomethane ND 1.00 ug/L 02/24/22 11:59 1Chlorodibromomethane ND 1.00 ug/L 02/24/22 11:59 1Chloroethane ND 1.00 ug/L 02/24/22 11:59 1Chloroform ND 1.00 ug/L 02/24/22 11:59 1Chloromethane ND 1.00 ug/L 02/24/22 11:59 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 11:59 1cis-1,3-Dichloropropene ND 1.00 ug/L 02/24/22 11:59 1Cyclohexane ND 1.00 ug/L 02/24/22 11:59 1Dichlorobromomethane ND 1.00 ug/L 02/24/22 11:59 1Dichlorodifluoromethane ND 1.00 ug/L 02/24/22 11:59 1Ethylbenzene ND 1.00 ug/L 02/24/22 11:59 11,2-Dibromoethane ND 1.00 ug/L 02/24/22 11:59 1Isopropylbenzene ND 5.00 ug/L 02/24/22 11:59 1Methyl acetate ND 1.00 ug/L 02/24/22 11:59 1Methyl tert-butyl ether ND 1.00 ug/L 02/24/22 11:59 1Methylcyclohexane ND 5.00 ug/L 02/24/22 11:59 1Methylene Chloride ND 5.00 ug/L 02/24/22 11:59 1m-Xylene & p-Xylene ND 5.00 ug/L 02/24/22 11:59 1o-Xylene ND 1.00 ug/L 02/24/22 11:59 1Styrene ND 1.00 ug/L 02/24/22 11:59 1Tetrachloroethene ND 1.00 ug/L 02/24/22 11:59 1Toluene ND 1.00 ug/L 02/24/22 11:59 1trans-1,2-Dichloroethene Eurofins Pittsburgh Page 86 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-567694/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 567694 RL MDL trans-1,3-Dichloropropene ND 5.00 ug/L 02/24/22 11:59 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 02/24/22 11:59 1Trichloroethene ND 1.00 ug/L 02/24/22 11:59 1Trichlorofluoromethane ND 1.00 ug/L 02/24/22 11:59 1Vinyl chloride 1,2-Dichloroethane-d4 (Surr)97 67 -134 02/24/22 11:59 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 106 02/24/22 11:59 14-Bromofluorobenzene 72 -119 102 02/24/22 11:59 1Dibromofluoromethane75-126 94 02/24/22 11:59 1Toluene-d8 (Surr)64 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-567694/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 567694 1,1,1-Trichloroethane 50.0 54.74 ug/L 109 68 -130 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,1,2,2-Tetrachloroethane 50.0 45.11 ug/L 90 70 -131 1,1,2-Trichlorotrifluoroethane 50.0 55.70 ug/L 111 60 -139 1,1,2-Trichloroethane 50.0 49.61 ug/L 99 70 -130 1,1-Dichloroethane 50.0 56.44 ug/L 113 70 -130 1,1-Dichloroethene 50.0 57.89 ug/L 116 63 -134 1,2,3-Trichlorobenzene 50.0 46.86 ug/L 94 60 -138 1,2,4-Trichlorobenzene 50.0 46.16 ug/L 92 60 -140 1,2-Dibromo-3-Chloropropane 50.0 40.83 ug/L 82 54 -135 1,2-Dichlorobenzene 50.0 52.46 ug/L 105 67 -130 1,2-Dichloroethane 50.0 53.45 ug/L 107 69 -130 1,2-Dichloropropane 50.0 61.15 ug/L 122 70 -130 1,3-Dichlorobenzene 50.0 50.79 ug/L 102 70 -130 1,4-Dichlorobenzene 50.0 51.32 ug/L 103 70 -130 1,4-Dioxane 1000 834.7 ug/L 83 50 -160 2-Butanone (MEK)200 216.0 ug/L 108 61 -145 2-Hexanone 200 191.8 ug/L 96 65 -137 4-Methyl-2-pentanone (MIBK)200 235.2 ug/L 118 69 -138 Acetone 200 217.0 ug/L 109 43 -160 Benzene 50.0 59.69 ug/L 119 70 -130 Bromoform 50.0 42.35 ug/L 85 57 -140 Bromomethane 50.0 78.25 ug/L 156 10 -160 Carbon disulfide 50.0 56.85 ug/L 114 61 -137 Carbon tetrachloride 50.0 52.42 ug/L 105 61 -137 Chlorobenzene 50.0 51.13 ug/L 102 70 -130 Chlorobromomethane 50.0 58.69 ug/L 117 70 -130 Chlorodibromomethane 50.0 43.89 ug/L 88 67 -135 Chloroethane 50.0 56.64 ug/L 113 55 -141 Chloroform 50.0 51.35 ug/L 103 69 -130 Chloromethane 50.0 54.08 ug/L 108 58 -137 cis-1,2-Dichloroethene 50.0 54.82 ug/L 110 68 -130 cis-1,3-Dichloropropene 50.0 58.04 ug/L 116 69 -132 Eurofins Pittsburgh Page 87 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-567694/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 567694 Cyclohexane 50.0 56.26 ug/L 113 70 -130 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Dichlorobromomethane 50.0 54.50 ug/L 109 67 -133 Dichlorodifluoromethane 50.0 50.15 ug/L 100 41 -146 Ethylbenzene 50.0 50.64 ug/L 101 70 -130 1,2-Dibromoethane 50.0 49.45 ug/L 99 70 -130 Isopropylbenzene 50.0 50.95 ug/L 102 70 -130 Methyl acetate 100 109.4 ug/L 109 45 -159 Methyl tert-butyl ether 50.0 51.54 ug/L 103 66 -130 Methylcyclohexane 50.0 60.06 ug/L 120 70 -130 Methylene Chloride 50.0 56.44 ug/L 113 66 -135 m-Xylene & p-Xylene 50.0 48.64 ug/L 97 70 -130 o-Xylene 50.0 49.86 ug/L 100 70 -130 Styrene 50.0 50.64 ug/L 101 70 -130 Tetrachloroethene 50.0 48.70 ug/L 97 65 -130 Toluene 50.0 50.19 ug/L 100 70 -130 trans-1,2-Dichloroethene 50.0 59.06 ug/L 118 70 -130 trans-1,3-Dichloropropene 50.0 45.69 ug/L 91 63 -130 Trichloroethene 50.0 57.95 ug/L 116 70 -130 Trichlorofluoromethane 50.0 54.29 ug/L 109 65 -138 Vinyl chloride 50.0 55.72 ug/L 111 59 -136 1,2-Dichloroethane-d4 (Surr)67 -134 Surrogate 95 LCS LCS Qualifier Limits%Recovery 824-Bromofluorobenzene 72 -119 102Dibromofluoromethane 75 -126 90Toluene-d8 (Surr)64 -132 Client Sample ID: Method BlankLab Sample ID: MB 400-568080/28 Matrix: Water Prep Type: Total/NA Analysis Batch: 568080 RL MDL 1,1,1-Trichloroethane ND 1.00 ug/L 02/28/22 11:22 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 02/28/22 11:22 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 02/28/22 11:22 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/28/22 11:22 11,1,2-Trichloroethane ND 1.00 ug/L 02/28/22 11:22 11,1-Dichloroethane ND 1.00 ug/L 02/28/22 11:22 11,1-Dichloroethene ND 1.00 ug/L 02/28/22 11:22 11,2,3-Trichlorobenzene ND 1.00 ug/L 02/28/22 11:22 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/28/22 11:22 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 02/28/22 11:22 11,2-Dichlorobenzene ND 1.00 ug/L 02/28/22 11:22 11,2-Dichloroethane ND 1.00 ug/L 02/28/22 11:22 11,2-Dichloropropane ND 1.00 ug/L 02/28/22 11:22 11,3-Dichlorobenzene ND 1.00 ug/L 02/28/22 11:22 11,4-Dichlorobenzene ND 400 ug/L 02/28/22 11:22 11,4-Dioxane ND 25.0 ug/L 02/28/22 11:22 12-Butanone (MEK) Eurofins Pittsburgh Page 88 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-568080/28 Matrix: Water Prep Type: Total/NA Analysis Batch: 568080 RL MDL 2-Hexanone ND 25.0 ug/L 02/28/22 11:22 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 25.0 ug/L 02/28/22 11:22 14-Methyl-2-pentanone (MIBK) ND 25.0 ug/L 02/28/22 11:22 1Acetone ND 1.00 ug/L 02/28/22 11:22 1Benzene ND 5.00 ug/L 02/28/22 11:22 1Bromoform ND 1.00 ug/L 02/28/22 11:22 1Bromomethane ND 1.00 ug/L 02/28/22 11:22 1Carbon disulfide ND 1.00 ug/L 02/28/22 11:22 1Carbon tetrachloride ND 1.00 ug/L 02/28/22 11:22 1Chlorobenzene ND 1.00 ug/L 02/28/22 11:22 1Chlorobromomethane ND 1.00 ug/L 02/28/22 11:22 1Chlorodibromomethane ND 1.00 ug/L 02/28/22 11:22 1Chloroethane ND 1.00 ug/L 02/28/22 11:22 1Chloroform ND 1.00 ug/L 02/28/22 11:22 1Chloromethane ND 1.00 ug/L 02/28/22 11:22 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/28/22 11:22 1cis-1,3-Dichloropropene ND 1.00 ug/L 02/28/22 11:22 1Cyclohexane ND 1.00 ug/L 02/28/22 11:22 1Dichlorobromomethane ND 1.00 ug/L 02/28/22 11:22 1Dichlorodifluoromethane ND 1.00 ug/L 02/28/22 11:22 1Ethylbenzene ND 1.00 ug/L 02/28/22 11:22 11,2-Dibromoethane ND 1.00 ug/L 02/28/22 11:22 1Isopropylbenzene ND 5.00 ug/L 02/28/22 11:22 1Methyl acetate ND 1.00 ug/L 02/28/22 11:22 1Methyl tert-butyl ether ND 1.00 ug/L 02/28/22 11:22 1Methylcyclohexane ND 5.00 ug/L 02/28/22 11:22 1Methylene Chloride ND 5.00 ug/L 02/28/22 11:22 1m-Xylene & p-Xylene ND 5.00 ug/L 02/28/22 11:22 1o-Xylene ND 1.00 ug/L 02/28/22 11:22 1Styrene ND 1.00 ug/L 02/28/22 11:22 1Tetrachloroethene ND 1.00 ug/L 02/28/22 11:22 1Toluene ND 1.00 ug/L 02/28/22 11:22 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/28/22 11:22 1trans-1,3-Dichloropropene ND 1.00 ug/L 02/28/22 11:22 1Trichloroethene ND 1.00 ug/L 02/28/22 11:22 1Trichlorofluoromethane ND 1.00 ug/L 02/28/22 11:22 1Vinyl chloride 1,2-Dichloroethane-d4 (Surr)103 67 -134 02/28/22 11:22 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 102 02/28/22 11:22 14-Bromofluorobenzene 72 -119 107 02/28/22 11:22 1Dibromofluoromethane75-126 96 02/28/22 11:22 1Toluene-d8 (Surr)64 -132 Eurofins Pittsburgh Page 89 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-568080/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 568080 1,1,1-Trichloroethane 50.0 44.67 ug/L 89 68 -130 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,1,2,2-Tetrachloroethane 50.0 44.05 ug/L 88 70 -131 1,1,2-Trichlorotrifluoroethane 50.0 44.68 ug/L 89 60 -139 1,1,2-Trichloroethane 50.0 46.81 ug/L 94 70 -130 1,1-Dichloroethane 50.0 44.19 ug/L 88 70 -130 1,1-Dichloroethene 50.0 44.07 ug/L 88 63 -134 1,2,3-Trichlorobenzene 50.0 50.16 ug/L 100 60 -138 1,2,4-Trichlorobenzene 50.0 49.24 ug/L 98 60 -140 1,2-Dibromo-3-Chloropropane 50.0 40.30 ug/L 81 54 -135 1,2-Dichlorobenzene 50.0 46.10 ug/L 92 67 -130 1,2-Dichloroethane 50.0 43.30 ug/L 87 69 -130 1,2-Dichloropropane 50.0 45.20 ug/L 90 70 -130 1,3-Dichlorobenzene 50.0 45.39 ug/L 91 70 -130 1,4-Dichlorobenzene 50.0 46.48 ug/L 93 70 -130 1,4-Dioxane 1000 989.2 ug/L 99 50 -160 2-Butanone (MEK)200 184.9 ug/L 92 61 -145 2-Hexanone 200 178.4 ug/L 89 65 -137 4-Methyl-2-pentanone (MIBK)200 182.4 ug/L 91 69 -138 Acetone 200 196.9 ug/L 98 43 -160 Benzene 50.0 46.21 ug/L 92 70 -130 Bromoform 50.0 44.44 ug/L 89 57 -140 Bromomethane 50.0 32.69 ug/L 65 10 -160 Carbon disulfide 50.0 43.74 ug/L 87 61 -137 Carbon tetrachloride 50.0 45.21 ug/L 90 61 -137 Chlorobenzene 50.0 47.53 ug/L 95 70 -130 Chlorobromomethane 50.0 49.63 ug/L 99 70 -130 Chlorodibromomethane 50.0 47.39 ug/L 95 67 -135 Chloroethane 50.0 36.39 ug/L 73 55 -141 Chloroform 50.0 46.55 ug/L 93 69 -130 Chloromethane 50.0 43.15 ug/L 86 58 -137 cis-1,2-Dichloroethene 50.0 44.62 ug/L 89 68 -130 cis-1,3-Dichloropropene 50.0 46.53 ug/L 93 69 -132 Cyclohexane 50.0 44.06 ug/L 88 70 -130 Dichlorobromomethane 50.0 47.28 ug/L 95 67 -133 Dichlorodifluoromethane 50.0 47.66 ug/L 95 41 -146 Ethylbenzene 50.0 46.15 ug/L 92 70 -130 1,2-Dibromoethane 50.0 48.10 ug/L 96 70 -130 Isopropylbenzene 50.0 47.55 ug/L 95 70 -130 Methyl acetate 100 95.00 ug/L 95 45 -159 Methyl tert-butyl ether 50.0 42.90 ug/L 86 66 -130 Methylcyclohexane 50.0 44.90 ug/L 90 70 -130 Methylene Chloride 50.0 46.17 ug/L 92 66 -135 m-Xylene & p-Xylene 50.0 46.25 ug/L 92 70 -130 o-Xylene 50.0 44.93 ug/L 90 70 -130 Styrene 50.0 46.27 ug/L 93 70 -130 Tetrachloroethene 50.0 48.94 ug/L 98 65 -130 Toluene 50.0 45.06 ug/L 90 70 -130 trans-1,2-Dichloroethene 50.0 47.32 ug/L 95 70 -130 Eurofins Pittsburgh Page 90 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-568080/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 568080 trans-1,3-Dichloropropene 50.0 43.45 ug/L 87 63 -130 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Trichloroethene 50.0 50.08 ug/L 100 70 -130 Trichlorofluoromethane 50.0 37.97 ug/L 76 65 -138 Vinyl chloride 50.0 40.34 ug/L 81 59 -136 1,2-Dichloroethane-d4 (Surr)67 -134 Surrogate 98 LCS LCS Qualifier Limits%Recovery 984-Bromofluorobenzene 72 -119 104Dibromofluoromethane 75 -126 95Toluene-d8 (Surr)64 -132 Client Sample ID: Matrix SpikeLab Sample ID: 400-216026-A-2 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 568080 1,1,1-Trichloroethane ND 50.0 49.24 ug/L 98 57 -142 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,1,2,2-Tetrachloroethane ND 50.0 56.72 ug/L 113 66 -135 1,1,2-Trichlorotrifluoroethane ND 50.0 48.05 ug/L 96 55 -150 1,1,2-Trichloroethane ND 50.0 53.76 ug/L 108 66 -131 1,1-Dichloroethane ND 50.0 50.00 ug/L 100 61 -144 1,1-Dichloroethene ND 50.0 48.59 ug/L 97 54 -147 1,2,3-Trichlorobenzene ND 50.0 58.15 ug/L 115 43 -145 1,2,4-Trichlorobenzene 115 50.0 165.0 ug/L 100 39 -148 1,2-Dibromo-3-Chloropropane ND F1 50.0 59.56 ug/L 119 45 -135 1,2-Dichlorobenzene ND 50.0 53.80 ug/L 108 52 -137 1,2-Dichloroethane ND 50.0 48.94 ug/L 98 60 -141 1,2-Dichloropropane ND 50.0 49.68 ug/L 99 66 -137 1,3-Dichlorobenzene ND 50.0 51.79 ug/L 104 54 -135 1,4-Dichlorobenzene ND 50.0 53.58 ug/L 107 53 -135 1,4-Dioxane ND F1 1000 1359 ug/L 136 10 -150 2-Butanone (MEK)ND 200 243.4 ug/L 119 55 -150 2-Hexanone ND 200 227.6 ug/L 114 65 -140 4-Methyl-2-pentanone (MIBK)ND 200 228.4 ug/L 114 63 -146 Acetone 71.3 200 293.9 ug/L 111 43 -150 Benzene ND 50.0 52.29 ug/L 103 56 -142 Bromoform ND 50.0 54.62 ug/L 109 50 -140 Bromomethane ND 50.0 36.94 ug/L 74 10 -150 Carbon disulfide ND 50.0 49.05 ug/L 98 48 -150 Carbon tetrachloride ND 50.0 49.32 ug/L 99 55 -145 Chlorobenzene ND 50.0 53.82 ug/L 108 64 -130 Chlorobromomethane ND 50.0 55.54 ug/L 111 64 -140 Chlorodibromomethane ND 50.0 54.27 ug/L 108 56 -143 Chloroethane ND 50.0 41.22 ug/L 82 50 -150 Chloroform 14.1 50.0 66.26 ug/L 104 60 -141 Chloromethane ND 50.0 51.73 ug/L 103 49 -148 cis-1,2-Dichloroethene ND 50.0 49.97 ug/L 100 59 -143 cis-1,3-Dichloropropene ND 50.0 51.80 ug/L 104 57 -140 Eurofins Pittsburgh Page 91 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 400-216026-A-2 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 568080 Cyclohexane ND 50.0 48.11 ug/L 96 58 -141 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Dichlorobromomethane 3.16 50.0 55.40 ug/L 104 59 -143 Dichlorodifluoromethane ND 50.0 53.45 ug/L 107 16 -150 Ethylbenzene 1.87 50.0 53.87 ug/L 104 58 -131 1,2-Dibromoethane ND F1 50.0 56.70 ug/L 113 64 -132 Isopropylbenzene ND F1 50.0 54.82 ug/L 110 56 -133 Methyl acetate ND 100 121.6 ug/L 122 21 -150 Methyl tert-butyl ether ND 50.0 49.42 ug/L 99 59 -137 Methylcyclohexane ND 50.0 49.45 ug/L 99 62 -141 Methylene Chloride ND 50.0 52.35 ug/L 105 60 -146 m-Xylene & p-Xylene 7.13 F1 50.0 60.28 ug/L 106 57 -130 o-Xylene ND F1 50.0 57.64 ug/L 107 61 -130 Styrene 304 E 50.0 362.6 E 4 ug/L 118 58 -131 Tetrachloroethene ND 50.0 52.92 ug/L 106 52 -133 Toluene 20.3 50.0 70.77 ug/L 101 65 -130 trans-1,2-Dichloroethene ND 50.0 52.30 ug/L 105 61 -143 trans-1,3-Dichloropropene ND 50.0 49.35 ug/L 99 53 -133 Trichloroethene ND 50.0 54.86 ug/L 110 64 -136 Trichlorofluoromethane ND 50.0 42.97 ug/L 86 54 -150 Vinyl chloride ND 50.0 47.59 ug/L 95 46 -150 1,2-Dichloroethane-d4 (Surr)67 -134 Surrogate 110 MS MS Qualifier Limits%Recovery 1034-Bromofluorobenzene 72 -119 102Dibromofluoromethane 75 -126 96Toluene-d8 (Surr)64 -132 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 400-216026-A-2 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 568080 1,1,1-Trichloroethane ND 50.0 60.89 ug/L 122 57 -142 21 30 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 1,1,2,2-Tetrachloroethane ND 50.0 66.01 ug/L 132 66 -135 15 30 1,1,2-Trichlorotrifluoroethane ND 50.0 58.70 ug/L 117 55 -150 20 30 1,1,2-Trichloroethane ND 50.0 64.65 ug/L 129 66 -131 18 30 1,1-Dichloroethane ND 50.0 61.06 ug/L 122 61 -144 20 30 1,1-Dichloroethene ND 50.0 59.93 ug/L 120 54 -147 21 30 1,2,3-Trichlorobenzene ND 50.0 69.63 ug/L 138 43 -145 18 30 1,2,4-Trichlorobenzene 115 50.0 177.7 ug/L 125 39 -148 7 30 1,2-Dibromo-3-Chloropropane ND F1 50.0 69.86 F1 ug/L 140 45 -135 16 30 1,2-Dichlorobenzene ND 50.0 63.93 ug/L 128 52 -137 17 30 1,2-Dichloroethane ND 50.0 58.83 ug/L 118 60 -141 18 30 1,2-Dichloropropane ND 50.0 60.33 ug/L 121 66 -137 19 30 1,3-Dichlorobenzene ND 50.0 62.22 ug/L 124 54 -135 18 30 1,4-Dichlorobenzene ND 50.0 64.04 ug/L 128 53 -135 18 30 1,4-Dioxane ND F1 1000 1519 F1 ug/L 152 10 -150 11 50 2-Butanone (MEK)ND 200 270.4 ug/L 133 55 -150 10 30 Eurofins Pittsburgh Page 92 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 400-216026-A-2 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 568080 2-Hexanone ND 200 269.3 ug/L 135 65 -140 17 30 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 4-Methyl-2-pentanone (MIBK)ND 200 265.3 ug/L 133 63 -146 15 30 Acetone 71.3 200 331.6 ug/L 130 43 -150 12 30 Benzene ND 50.0 63.00 ug/L 125 56 -142 19 30 Bromoform ND 50.0 64.30 ug/L 129 50 -140 16 30 Bromomethane ND 50.0 39.73 ug/L 79 10 -150 7 50 Carbon disulfide ND 50.0 60.60 ug/L 121 48 -150 21 30 Carbon tetrachloride ND 50.0 60.80 ug/L 122 55 -145 21 30 Chlorobenzene ND 50.0 64.68 ug/L 129 64 -130 18 30 Chlorobromomethane ND 50.0 64.62 ug/L 129 64 -140 15 30 Chlorodibromomethane ND 50.0 65.65 ug/L 130 56 -143 19 30 Chloroethane ND 50.0 41.63 ug/L 83 50 -150 1 30 Chloroform 14.1 50.0 77.82 ug/L 127 60 -141 16 30 Chloromethane ND 50.0 52.01 ug/L 104 49 -148 1 31 cis-1,2-Dichloroethene ND 50.0 61.28 ug/L 123 59 -143 20 30 cis-1,3-Dichloropropene ND 50.0 63.17 ug/L 126 57 -140 20 30 Cyclohexane ND 50.0 59.62 ug/L 119 58 -141 21 30 Dichlorobromomethane 3.16 50.0 67.53 ug/L 129 59 -143 20 30 Dichlorodifluoromethane ND 50.0 56.69 ug/L 113 16 -150 6 31 Ethylbenzene 1.87 50.0 66.02 ug/L 128 58 -131 20 30 1,2-Dibromoethane ND F1 50.0 68.10 F1 ug/L 136 64 -132 18 30 Isopropylbenzene ND F1 50.0 67.41 F1 ug/L 135 56 -133 21 30 Methyl acetate ND 100 136.2 ug/L 136 21 -150 11 30 Methyl tert-butyl ether ND 50.0 59.33 ug/L 119 59 -137 18 30 Methylcyclohexane ND 50.0 60.34 ug/L 121 62 -141 20 30 Methylene Chloride ND 50.0 62.76 ug/L 126 60 -146 18 32 m-Xylene & p-Xylene 7.13 F1 50.0 72.82 F1 ug/L 131 57 -130 19 30 o-Xylene ND F1 50.0 70.44 F1 ug/L 132 61 -130 20 30 Styrene 304 E 50.0 391.1 E 4 ug/L 175 58 -131 8 30 Tetrachloroethene ND 50.0 65.36 ug/L 131 52 -133 21 30 Toluene 20.3 50.0 83.38 ug/L 126 65 -130 16 30 trans-1,2-Dichloroethene ND 50.0 62.22 ug/L 124 61 -143 17 30 trans-1,3-Dichloropropene ND 50.0 60.35 ug/L 121 53 -133 20 30 Trichloroethene ND 50.0 66.36 ug/L 133 64 -136 19 30 Trichlorofluoromethane ND 50.0 43.92 ug/L 88 54 -150 2 30 Vinyl chloride ND 50.0 51.78 ug/L 104 46 -150 8 30 1,2-Dichloroethane-d4 (Surr)67 -134 Surrogate 110 MSD MSD Qualifier Limits%Recovery 1024-Bromofluorobenzene 72 -119 101Dibromofluoromethane 75 -126 98Toluene-d8 (Surr)64 -132 Eurofins Pittsburgh Page 93 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) Client Sample ID: Method BlankLab Sample ID: MB 400-567699/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 567699 RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/24/22 14:35 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier Dibromofluoromethane 118 50 -150 02/24/22 14:35 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 79 02/24/22 14:35 1Toluene-d8 (Surr)50 -150 97 02/24/22 14:35 14-Bromofluorobenzene 50 -150 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-567699/1003 Matrix: Water Prep Type: Total/NA Analysis Batch: 567699 1,4-Dioxane 10.0 11.81 ug/L 118 50 -150 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Dibromofluoromethane 50 -150 Surrogate 112 LCS LCS Qualifier Limits%Recovery 82Toluene-d8 (Surr)50 -150 964-Bromofluorobenzene 50 -150 Client Sample ID: MW-5Lab Sample ID: 180-133728-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 567699 1,4-Dioxane ND 10.0 13.02 ug/L 130 50 -150 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Dibromofluoromethane 50 -150 Surrogate 111 MS MS Qualifier Limits%Recovery 82Toluene-d8 (Surr)50 -150 964-Bromofluorobenzene 50 -150 Client Sample ID: MW-5Lab Sample ID: 180-133728-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 567699 1,4-Dioxane ND 10.0 12.46 ug/L 125 50 -150 4 50 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Dibromofluoromethane 50 -150 Surrogate 109 MSD MSD Qualifier Limits%Recovery 82Toluene-d8 (Surr)50 -150 974-Bromofluorobenzene 50 -150 Eurofins Pittsburgh Page 94 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-567866/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 567866 RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/25/22 12:20 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier Dibromofluoromethane 117 50 -150 02/25/22 12:20 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 77 02/25/22 12:20 1Toluene-d8 (Surr)50 -150 96 02/25/22 12:20 14-Bromofluorobenzene 50 -150 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-567866/1003 Matrix: Water Prep Type: Total/NA Analysis Batch: 567866 1,4-Dioxane 10.0 11.64 ug/L 116 50 -150 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Dibromofluoromethane 50 -150 Surrogate 112 LCS LCS Qualifier Limits%Recovery 79Toluene-d8 (Surr)50 -150 954-Bromofluorobenzene 50 -150 Client Sample ID: MW-4Lab Sample ID: 180-133839-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 567866 1,4-Dioxane 2.17 10.0 17.03 ug/L 149 50 -150 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Dibromofluoromethane 50 -150 Surrogate 113 MS MS Qualifier Limits%Recovery 79Toluene-d8 (Surr)50 -150 944-Bromofluorobenzene 50 -150 Client Sample ID: MW-4Lab Sample ID: 180-133839-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 567866 1,4-Dioxane 2.17 10.0 14.40 ug/L 122 50 -150 17 50 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Dibromofluoromethane 50 -150 Surrogate 112 MSD MSD Qualifier Limits%Recovery 79Toluene-d8 (Surr)50 -150 954-Bromofluorobenzene 50 -150 Eurofins Pittsburgh Page 95 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-568096/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 568096 RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 02/28/22 13:10 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier Dibromofluoromethane 115 50 -150 02/28/22 13:10 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 72 02/28/22 13:10 1Toluene-d8 (Surr)50 -150 93 02/28/22 13:10 14-Bromofluorobenzene 50 -150 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-568096/1003 Matrix: Water Prep Type: Total/NA Analysis Batch: 568096 1,4-Dioxane 10.0 11.42 ug/L 114 50 -150 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Dibromofluoromethane 50 -150 Surrogate 112 LCS LCS Qualifier Limits%Recovery 75Toluene-d8 (Surr)50 -150 944-Bromofluorobenzene 50 -150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS Client Sample ID: Method BlankLab Sample ID: MB 180-388935/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 388935 RL MDL Acetone ND 20.0 ug/L 02/21/22 11:27 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/21/22 11:27 1Benzene ND 5.00 ug/L 02/21/22 11:27 1Chlorobromomethane ND 5.00 ug/L 02/21/22 11:27 1Dichlorobromomethane ND 5.00 ug/L 02/21/22 11:27 1Bromoform ND 5.00 ug/L 02/21/22 11:27 1Bromomethane ND 5.00 ug/L 02/21/22 11:27 12-Butanone (MEK) ND 5.00 ug/L 02/21/22 11:27 1Carbon disulfide ND 5.00 ug/L 02/21/22 11:27 1Carbon tetrachloride ND 5.00 ug/L 02/21/22 11:27 1Chlorobenzene ND 5.00 ug/L 02/21/22 11:27 1Chlorodibromomethane ND 5.00 ug/L 02/21/22 11:27 1Chloroethane ND 5.00 ug/L 02/21/22 11:27 1Chloroform ND 5.00 ug/L 02/21/22 11:27 1Chloromethane ND 5.00 ug/L 02/21/22 11:27 1Cyclohexane ND 5.00 ug/L 02/21/22 11:27 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/21/22 11:27 11,2-Dichlorobenzene ND 5.00 ug/L 02/21/22 11:27 11,3-Dichlorobenzene ND 5.00 ug/L 02/21/22 11:27 11,4-Dichlorobenzene ND 5.00 ug/L 02/21/22 11:27 1Dichlorodifluoromethane ND 5.00 ug/L 02/21/22 11:27 11,1-Dichloroethane ND 5.00 ug/L 02/21/22 11:27 11,2-Dichloroethane Eurofins Pittsburgh Page 96 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-388935/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 388935 RL MDL cis-1,2-Dichloroethene ND 5.00 ug/L 02/21/22 11:27 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/21/22 11:27 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/21/22 11:27 11,1-Dichloroethene ND 5.00 ug/L 02/21/22 11:27 11,2-Dichloropropane ND 5.00 ug/L 02/21/22 11:27 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/21/22 11:27 1trans-1,3-Dichloropropene ND 1000 ug/L 02/21/22 11:27 11,4-Dioxane ND 5.00 ug/L 02/21/22 11:27 1Ethylbenzene ND 5.00 ug/L 02/21/22 11:27 12-Hexanone ND 5.00 ug/L 02/21/22 11:27 1Isopropylbenzene ND 25.0 ug/L 02/21/22 11:27 1Methyl acetate ND 5.00 ug/L 02/21/22 11:27 1Methylcyclohexane ND 5.00 ug/L 02/21/22 11:27 1Methylene Chloride ND 5.00 ug/L 02/21/22 11:27 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 02/21/22 11:27 1Methyl tert-butyl ether ND 5.00 ug/L 02/21/22 11:27 1Styrene ND 5.00 ug/L 02/21/22 11:27 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/21/22 11:27 1Tetrachloroethene ND 5.00 ug/L 02/21/22 11:27 1Toluene ND 5.00 ug/L 02/21/22 11:27 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/21/22 11:27 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/21/22 11:27 11,1,1-Trichloroethane ND 5.00 ug/L 02/21/22 11:27 11,1,2-Trichloroethane ND 5.00 ug/L 02/21/22 11:27 1Trichloroethene ND 5.00 ug/L 02/21/22 11:27 1Trichlorofluoromethane ND 5.00 ug/L 02/21/22 11:27 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/21/22 11:27 1Vinyl chloride ND 5.00 ug/L 02/21/22 11:27 1m-Xylene & p-Xylene ND 5.00 ug/L 02/21/22 11:27 1o-Xylene ND 5.00 ug/L 02/21/22 11:27 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)92 52 -151 02/21/22 11:27 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 103 02/21/22 11:27 1Toluene-d8 (Surr)53 -124 93 02/21/22 11:27 14-Bromofluorobenzene (Surr)49 -118 101 02/21/22 11:27 1Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-388935/25 Matrix: Water Prep Type: Total/NA Analysis Batch: 388935 Acetone 10.0 6.972 J ug/L 70 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 10.0 9.562 ug/L 96 68 -122 Chlorobromomethane 10.0 9.214 ug/L 92 59 -133 Dichlorobromomethane 10.0 8.380 ug/L 84 63 -132 Bromoform 10.0 7.132 ug/L 71 31 -164 Bromomethane 10.0 10.60 ug/L 106 20 -170 Eurofins Pittsburgh Page 97 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-388935/25 Matrix: Water Prep Type: Total/NA Analysis Batch: 388935 2-Butanone (MEK)10.0 6.120 ug/L 61 35 -158 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Carbon disulfide 10.0 13.32 ug/L 133 32 -139 Carbon tetrachloride 10.0 9.361 ug/L 94 60 -135 Chlorobenzene 10.0 7.055 *- ug/L 71 72 -123 Chlorodibromomethane 10.0 8.765 ug/L 88 51 -144 Chloroethane 10.0 10.83 ug/L 108 10 -170 Chloroform 10.0 8.274 ug/L 83 62 -121 Chloromethane 10.0 11.71 ug/L 117 37 -170 Cyclohexane 10.0 7.796 ug/L 78 50 -161 1,2-Dibromo-3-Chloropropane 10.0 ND ug/L 19 10 -170 1,2-Dichlorobenzene 10.0 4.811 J *- ug/L 48 68 -116 1,3-Dichlorobenzene 10.0 5.367 *- ug/L 54 70 -119 1,4-Dichlorobenzene 10.0 5.394 *- ug/L 54 74 -117 Dichlorodifluoromethane 10.0 10.06 ug/L 101 21 -165 1,1-Dichloroethane 10.0 9.601 ug/L 96 59 -125 1,2-Dichloroethane 10.0 8.531 ug/L 85 57 -149 cis-1,2-Dichloroethene 10.0 9.367 ug/L 94 64 -122 trans-1,2-Dichloroethene 10.0 10.46 ug/L 105 62 -126 1,1-Dichloroethene 10.0 9.606 ug/L 96 49 -132 1,2-Dichloropropane 10.0 9.361 ug/L 94 65 -129 cis-1,3-Dichloropropene 10.0 9.443 ug/L 94 53 -140 trans-1,3-Dichloropropene 10.0 8.502 ug/L 85 57 -137 1,4-Dioxane 200 ND *- ug/L 6 10 -170 Ethylbenzene 10.0 7.052 ug/L 71 66 -122 2-Hexanone 10.0 7.425 ug/L 74 38 -157 Isopropylbenzene 10.0 5.518 ug/L 55 54 -130 Methyl acetate 20.0 11.45 J ug/L 57 10 -170 Methylcyclohexane 10.0 8.025 ug/L 80 60 -127 Methylene Chloride 10.0 16.92 *+ ug/L 169 51 -137 4-Methyl-2-pentanone (MIBK)10.0 7.431 ug/L 74 29 -167 Methyl tert-butyl ether 10.0 9.583 ug/L 96 36 -141 Styrene 10.0 7.312 ug/L 73 68 -127 1,1,2,2-Tetrachloroethane 10.0 6.956 ug/L 70 47 -147 Tetrachloroethene 10.0 6.477 ug/L 65 60 -129 Toluene 10.0 8.296 ug/L 83 67 -128 1,2,3-Trichlorobenzene 10.0 ND ug/L 22 10 -170 1,2,4-Trichlorobenzene 10.0 ND *- ug/L 6 15 -169 1,1,1-Trichloroethane 10.0 10.10 ug/L 101 64 -133 1,1,2-Trichloroethane 10.0 9.144 ug/L 91 59 -137 Trichloroethene 10.0 8.753 ug/L 88 67 -121 Trichlorofluoromethane 10.0 8.167 ug/L 82 32 -157 1,1,2-Trichlorotrifluoroethane 10.0 7.181 ug/L 72 48 -134 Vinyl chloride 10.0 11.27 ug/L 113 47 -147 m-Xylene & p-Xylene 10.0 6.718 ug/L 67 61 -128 o-Xylene 10.0 6.925 ug/L 69 64 -120 1,2-Dibromoethane 10.0 8.114 ug/L 81 55 -146 Eurofins Pittsburgh Page 98 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-388935/25 Matrix: Water Prep Type: Total/NA Analysis Batch: 388935 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 70 LCS LCS Qualifier Limits%Recovery 79Toluene-d8 (Surr)53 -124 814-Bromofluorobenzene (Surr)49 -118 78Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 180-388935/26 Matrix: Water Prep Type: Total/NA Analysis Batch: 388935 Acetone 10.0 10.03 J *1 ug/L 100 29 -163 36 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 10.0 10.78 ug/L 108 68 -122 12 21 Chlorobromomethane 10.0 10.44 ug/L 104 59 -133 12 26 Dichlorobromomethane 10.0 9.278 ug/L 93 63 -132 10 24 Bromoform 10.0 9.256 ug/L 93 31 -164 26 35 Bromomethane 10.0 10.90 ug/L 109 20 -170 3 30 2-Butanone (MEK)10.0 7.256 ug/L 73 35 -158 17 35 Carbon disulfide 10.0 13.34 ug/L 133 32 -139 0 25 Carbon tetrachloride 10.0 8.947 ug/L 89 60 -135 5 25 Chlorobenzene 10.0 8.261 ug/L 83 72 -123 16 19 Chlorodibromomethane 10.0 10.74 ug/L 107 51 -144 20 25 Chloroethane 10.0 11.58 ug/L 116 10 -170 7 29 Chloroform 10.0 9.250 ug/L 93 62 -121 11 22 Chloromethane 10.0 11.63 ug/L 116 37 -170 1 28 Cyclohexane 10.0 7.896 ug/L 79 50 -161 1 28 1,2-Dibromo-3-Chloropropane 10.0 ND ug/L 22 10 -170 18 35 1,2-Dichlorobenzene 10.0 7.286 *1 ug/L 73 68 -116 41 20 1,3-Dichlorobenzene 10.0 7.561 *1 ug/L 76 70 -119 34 18 1,4-Dichlorobenzene 10.0 7.635 *1 ug/L 76 74 -117 34 17 Dichlorodifluoromethane 10.0 9.420 ug/L 94 21 -165 7 26 1,1-Dichloroethane 10.0 10.36 ug/L 104 59 -125 8 20 1,2-Dichloroethane 10.0 9.425 ug/L 94 57 -149 10 27 cis-1,2-Dichloroethene 10.0 10.95 ug/L 109 64 -122 16 22 trans-1,2-Dichloroethene 10.0 10.55 ug/L 106 62 -126 1 23 1,1-Dichloroethene 10.0 12.79 *1 ug/L 128 49 -132 28 23 1,2-Dichloropropane 10.0 10.51 ug/L 105 65 -129 12 23 cis-1,3-Dichloropropene 10.0 11.04 ug/L 110 53 -140 16 26 trans-1,3-Dichloropropene 10.0 10.12 ug/L 101 57 -137 17 25 1,4-Dioxane 200 ND *1 ug/L 32 10 -170 133 35 Ethylbenzene 10.0 7.981 ug/L 80 66 -122 12 22 2-Hexanone 10.0 9.895 ug/L 99 38 -157 29 35 Isopropylbenzene 10.0 6.427 ug/L 64 54 -130 15 22 Methyl acetate 20.0 17.64 J *1 ug/L 88 10 -170 43 35 Methylcyclohexane 10.0 7.637 ug/L 76 60 -127 5 26 Methylene Chloride 10.0 17.72 *+ ug/L 177 51 -137 5 35 4-Methyl-2-pentanone (MIBK)10.0 8.582 ug/L 86 29 -167 14 35 Methyl tert-butyl ether 10.0 12.38 ug/L 124 36 -141 25 35 Styrene 10.0 9.007 ug/L 90 68 -127 21 22 Eurofins Pittsburgh Page 99 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 180-388935/26 Matrix: Water Prep Type: Total/NA Analysis Batch: 388935 1,1,2,2-Tetrachloroethane 10.0 9.250 ug/L 92 47 -147 28 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Tetrachloroethene 10.0 7.032 ug/L 70 60 -129 8 22 Toluene 10.0 9.112 ug/L 91 67 -128 9 22 1,2,3-Trichlorobenzene 10.0 ND ug/L 25 10 -170 14 35 1,2,4-Trichlorobenzene 10.0 ND *- ug/L 7 15 -169 6 35 1,1,1-Trichloroethane 10.0 9.957 ug/L 100 64 -133 1 22 1,1,2-Trichloroethane 10.0 11.44 ug/L 114 59 -137 22 29 Trichloroethene 10.0 9.247 ug/L 92 67 -121 5 23 Trichlorofluoromethane 10.0 9.092 ug/L 91 32 -157 11 35 1,1,2-Trichlorotrifluoroethane 10.0 6.249 ug/L 62 48 -134 14 28 Vinyl chloride 10.0 10.76 ug/L 108 47 -147 5 25 m-Xylene & p-Xylene 10.0 7.910 ug/L 79 61 -128 16 21 o-Xylene 10.0 8.099 ug/L 81 64 -120 16 23 1,2-Dibromoethane 10.0 9.848 ug/L 98 55 -146 19 30 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 82 LCSD LCSD Qualifier Limits%Recovery 88Toluene-d8 (Surr)53 -124 874-Bromofluorobenzene (Surr)49 -118 94Dibromofluoromethane (Surr)60 -132 Client Sample ID: Method BlankLab Sample ID: MB 180-389102/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 389102 RL MDL Acetone ND 20.0 ug/L 02/22/22 10:46 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/22/22 10:46 1Benzene ND 5.00 ug/L 02/22/22 10:46 1Chlorobromomethane ND 5.00 ug/L 02/22/22 10:46 1Dichlorobromomethane ND 5.00 ug/L 02/22/22 10:46 1Bromoform ND 5.00 ug/L 02/22/22 10:46 1Bromomethane ND 5.00 ug/L 02/22/22 10:46 12-Butanone (MEK) ND 5.00 ug/L 02/22/22 10:46 1Carbon disulfide ND 5.00 ug/L 02/22/22 10:46 1Carbon tetrachloride ND 5.00 ug/L 02/22/22 10:46 1Chlorobenzene ND 5.00 ug/L 02/22/22 10:46 1Chlorodibromomethane ND 5.00 ug/L 02/22/22 10:46 1Chloroethane ND 5.00 ug/L 02/22/22 10:46 1Chloroform ND 5.00 ug/L 02/22/22 10:46 1Chloromethane ND 5.00 ug/L 02/22/22 10:46 1Cyclohexane ND 5.00 ug/L 02/22/22 10:46 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/22/22 10:46 11,2-Dichlorobenzene ND 5.00 ug/L 02/22/22 10:46 11,3-Dichlorobenzene ND 5.00 ug/L 02/22/22 10:46 11,4-Dichlorobenzene ND 5.00 ug/L 02/22/22 10:46 1Dichlorodifluoromethane ND 5.00 ug/L 02/22/22 10:46 11,1-Dichloroethane ND 5.00 ug/L 02/22/22 10:46 11,2-Dichloroethane Eurofins Pittsburgh Page 100 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389102/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 389102 RL MDL cis-1,2-Dichloroethene ND 5.00 ug/L 02/22/22 10:46 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/22/22 10:46 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/22/22 10:46 11,1-Dichloroethene ND 5.00 ug/L 02/22/22 10:46 11,2-Dichloropropane ND 5.00 ug/L 02/22/22 10:46 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/22/22 10:46 1trans-1,3-Dichloropropene ND 1000 ug/L 02/22/22 10:46 11,4-Dioxane ND 5.00 ug/L 02/22/22 10:46 1Ethylbenzene ND 5.00 ug/L 02/22/22 10:46 12-Hexanone ND 5.00 ug/L 02/22/22 10:46 1Isopropylbenzene ND 25.0 ug/L 02/22/22 10:46 1Methyl acetate ND 5.00 ug/L 02/22/22 10:46 1Methylcyclohexane ND 5.00 ug/L 02/22/22 10:46 1Methylene Chloride ND 5.00 ug/L 02/22/22 10:46 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 02/22/22 10:46 1Methyl tert-butyl ether ND 5.00 ug/L 02/22/22 10:46 1Styrene ND 5.00 ug/L 02/22/22 10:46 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/22/22 10:46 1Tetrachloroethene ND 5.00 ug/L 02/22/22 10:46 1Toluene ND 5.00 ug/L 02/22/22 10:46 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/22/22 10:46 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/22/22 10:46 11,1,1-Trichloroethane ND 5.00 ug/L 02/22/22 10:46 11,1,2-Trichloroethane ND 5.00 ug/L 02/22/22 10:46 1Trichloroethene ND 5.00 ug/L 02/22/22 10:46 1Trichlorofluoromethane ND 5.00 ug/L 02/22/22 10:46 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/22/22 10:46 1Vinyl chloride ND 5.00 ug/L 02/22/22 10:46 1m-Xylene & p-Xylene ND 5.00 ug/L 02/22/22 10:46 1o-Xylene ND 5.00 ug/L 02/22/22 10:46 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)78 52 -151 02/22/22 10:46 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 87 02/22/22 10:46 1Toluene-d8 (Surr)53 -124 64 02/22/22 10:46 14-Bromofluorobenzene (Surr)49 -118 85 02/22/22 10:46 1Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389102/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 389102 Acetone 10.0 7.163 J ug/L 72 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 10.0 8.425 ug/L 84 68 -122 Chlorobromomethane 10.0 8.148 ug/L 81 59 -133 Dichlorobromomethane 10.0 7.914 ug/L 79 63 -132 Bromoform 10.0 8.222 ug/L 82 31 -164 Bromomethane 10.0 9.915 ug/L 99 20 -170 Eurofins Pittsburgh Page 101 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389102/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 389102 2-Butanone (MEK)10.0 6.797 ug/L 68 35 -158 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Carbon disulfide 10.0 8.820 ug/L 88 32 -139 Carbon tetrachloride 10.0 8.388 ug/L 84 60 -135 Chlorobenzene 10.0 8.412 ug/L 84 72 -123 Chlorodibromomethane 10.0 8.463 ug/L 85 51 -144 Chloroethane 10.0 8.881 ug/L 89 10 -170 Chloroform 10.0 8.522 ug/L 85 62 -121 Chloromethane 10.0 7.879 ug/L 79 37 -170 Cyclohexane 10.0 8.299 ug/L 83 50 -161 1,2-Dibromo-3-Chloropropane 10.0 6.897 ug/L 69 10 -170 1,2-Dichlorobenzene 10.0 9.073 ug/L 91 68 -116 1,3-Dichlorobenzene 10.0 9.043 ug/L 90 70 -119 1,4-Dichlorobenzene 10.0 9.135 ug/L 91 74 -117 Dichlorodifluoromethane 10.0 7.794 ug/L 78 21 -165 1,1-Dichloroethane 10.0 7.881 ug/L 79 59 -125 1,2-Dichloroethane 10.0 7.584 ug/L 76 57 -149 cis-1,2-Dichloroethene 10.0 8.363 ug/L 84 64 -122 trans-1,2-Dichloroethene 10.0 8.334 ug/L 83 62 -126 1,1-Dichloroethene 10.0 8.172 ug/L 82 49 -132 1,2-Dichloropropane 10.0 7.887 ug/L 79 65 -129 cis-1,3-Dichloropropene 10.0 8.460 ug/L 85 53 -140 trans-1,3-Dichloropropene 10.0 8.042 ug/L 80 57 -137 1,4-Dioxane 200 ND ug/L 72 10 -170 Ethylbenzene 10.0 9.172 ug/L 92 66 -122 2-Hexanone 10.0 7.215 ug/L 72 38 -157 Isopropylbenzene 10.0 9.365 ug/L 94 54 -130 Methyl acetate 20.0 13.31 J ug/L 67 10 -170 Methylcyclohexane 10.0 8.506 ug/L 85 60 -127 Methylene Chloride 10.0 8.673 ug/L 87 51 -137 4-Methyl-2-pentanone (MIBK)10.0 8.530 ug/L 85 29 -167 Methyl tert-butyl ether 10.0 7.878 ug/L 79 36 -141 Styrene 10.0 9.341 ug/L 93 68 -127 1,1,2,2-Tetrachloroethane 10.0 8.312 ug/L 83 47 -147 Tetrachloroethene 10.0 9.314 ug/L 93 60 -129 Toluene 10.0 8.944 ug/L 89 67 -128 1,2,3-Trichlorobenzene 10.0 5.403 ug/L 54 10 -170 1,2,4-Trichlorobenzene 10.0 6.636 ug/L 66 15 -169 1,1,1-Trichloroethane 10.0 8.556 ug/L 86 64 -133 1,1,2-Trichloroethane 10.0 8.649 ug/L 86 59 -137 Trichloroethene 10.0 8.358 ug/L 84 67 -121 Trichlorofluoromethane 10.0 8.311 ug/L 83 32 -157 1,1,2-Trichlorotrifluoroethane 10.0 7.502 ug/L 75 48 -134 Vinyl chloride 10.0 8.372 ug/L 84 47 -147 m-Xylene & p-Xylene 10.0 9.302 ug/L 93 61 -128 o-Xylene 10.0 9.110 ug/L 91 64 -120 1,2-Dibromoethane 10.0 7.945 ug/L 79 55 -146 Eurofins Pittsburgh Page 102 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389102/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 389102 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 79 LCS LCS Qualifier Limits%Recovery 90Toluene-d8 (Surr)53 -124 904-Bromofluorobenzene (Surr)49 -118 84Dibromofluoromethane (Surr)60 -132 Client Sample ID: B-1Lab Sample ID: 180-133790-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389102 Acetone ND F1 10.0 ND F1 ug/L 0 29 -163 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 10.0 8.817 ug/L 88 68 -122 Chlorobromomethane ND 10.0 8.519 ug/L 85 59 -133 Dichlorobromomethane ND 10.0 8.131 ug/L 81 63 -132 Bromoform ND 10.0 8.378 ug/L 84 31 -164 Bromomethane ND 10.0 10.31 ug/L 103 20 -170 2-Butanone (MEK)ND 10.0 ND ug/L 47 35 -158 Carbon disulfide ND 10.0 9.547 ug/L 95 32 -139 Carbon tetrachloride ND 10.0 8.877 ug/L 89 60 -135 Chlorobenzene ND 10.0 9.106 ug/L 91 72 -123 Chlorodibromomethane ND 10.0 8.796 ug/L 88 51 -144 Chloroethane ND 10.0 9.425 ug/L 94 10 -170 Chloroform ND 10.0 8.672 ug/L 87 62 -121 Chloromethane ND 10.0 8.469 ug/L 85 37 -170 Cyclohexane ND 10.0 8.328 ug/L 83 50 -161 1,2-Dibromo-3-Chloropropane ND 10.0 6.523 ug/L 65 10 -170 1,2-Dichlorobenzene ND F1 10.0 12.09 F1 ug/L 121 68 -116 1,3-Dichlorobenzene ND 10.0 9.766 ug/L 98 70 -119 1,4-Dichlorobenzene ND 10.0 9.444 ug/L 94 74 -117 Dichlorodifluoromethane ND 10.0 9.911 ug/L 99 21 -165 1,1-Dichloroethane ND 10.0 10.81 ug/L 85 59 -125 1,2-Dichloroethane ND 10.0 9.500 ug/L 95 57 -149 cis-1,2-Dichloroethene 6.12 10.0 13.84 ug/L 77 64 -122 trans-1,2-Dichloroethene ND 10.0 8.613 ug/L 86 62 -126 1,1-Dichloroethene ND 10.0 9.595 ug/L 96 49 -132 1,2-Dichloropropane ND 10.0 8.286 ug/L 83 65 -129 cis-1,3-Dichloropropene ND 10.0 8.478 ug/L 85 53 -140 trans-1,3-Dichloropropene ND 10.0 8.119 ug/L 81 57 -137 1,4-Dioxane ND 200 ND ug/L NC 10 -170 Ethylbenzene ND 10.0 9.913 ug/L 99 66 -122 2-Hexanone ND 10.0 6.068 ug/L 61 38 -157 Isopropylbenzene ND 10.0 9.939 ug/L 99 54 -130 Methyl acetate ND 20.0 ND ug/L 72 10 -170 Methylcyclohexane ND 10.0 8.796 ug/L 88 60 -127 Methylene Chloride ND 10.0 8.270 ug/L 83 51 -137 4-Methyl-2-pentanone (MIBK)ND 10.0 8.774 ug/L 88 29 -167 Methyl tert-butyl ether ND 10.0 8.322 ug/L 83 36 -141 Styrene ND 10.0 9.956 ug/L 100 68 -127 Eurofins Pittsburgh Page 103 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: B-1Lab Sample ID: 180-133790-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389102 1,1,2,2-Tetrachloroethane ND 10.0 9.046 ug/L 90 47 -147 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Tetrachloroethene ND 10.0 10.36 ug/L 104 60 -129 Toluene ND 10.0 9.913 ug/L 99 67 -128 1,2,3-Trichlorobenzene ND 10.0 ND ug/L 41 10 -170 1,2,4-Trichlorobenzene ND 10.0 6.274 ug/L 63 15 -169 1,1,1-Trichloroethane ND 10.0 9.056 ug/L 91 64 -133 1,1,2-Trichloroethane ND 10.0 9.440 ug/L 94 59 -137 Trichloroethene ND 10.0 9.041 ug/L 90 67 -121 Trichlorofluoromethane ND 10.0 10.31 ug/L 103 32 -157 1,1,2-Trichlorotrifluoroethane ND 10.0 8.739 ug/L 87 48 -134 Vinyl chloride ND 10.0 9.362 ug/L 94 47 -147 m-Xylene & p-Xylene ND 10.0 10.44 ug/L 104 61 -128 o-Xylene ND 10.0 9.913 ug/L 99 64 -120 1,2-Dibromoethane ND 10.0 8.458 ug/L 85 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 85 MS MS Qualifier Limits%Recovery 100Toluene-d8 (Surr)53 -124 1034-Bromofluorobenzene (Surr)49 -118 89Dibromofluoromethane (Surr)60 -132 Client Sample ID: B-1Lab Sample ID: 180-133790-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389102 Acetone ND F1 10.0 ND F1 ug/L 0 29 -163 NC 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 10.0 8.961 ug/L 90 68 -122 2 21 Chlorobromomethane ND 10.0 8.518 ug/L 85 59 -133 0 26 Dichlorobromomethane ND 10.0 8.539 ug/L 85 63 -132 5 24 Bromoform ND 10.0 8.875 ug/L 89 31 -164 6 35 Bromomethane ND 10.0 10.41 ug/L 104 20 -170 1 30 2-Butanone (MEK)ND 10.0 5.091 ug/L 51 35 -158 7 35 Carbon disulfide ND 10.0 9.873 ug/L 99 32 -139 3 25 Carbon tetrachloride ND 10.0 9.643 ug/L 96 60 -135 8 25 Chlorobenzene ND 10.0 9.289 ug/L 93 72 -123 2 19 Chlorodibromomethane ND 10.0 8.970 ug/L 90 51 -144 2 25 Chloroethane ND 10.0 10.01 ug/L 100 10 -170 6 29 Chloroform ND 10.0 9.037 ug/L 90 62 -121 4 22 Chloromethane ND 10.0 8.503 ug/L 85 37 -170 0 28 Cyclohexane ND 10.0 9.017 ug/L 90 50 -161 8 28 1,2-Dibromo-3-Chloropropane ND 10.0 6.917 ug/L 69 10 -170 6 35 1,2-Dichlorobenzene ND F1 10.0 11.55 ug/L 115 68 -116 5 20 1,3-Dichlorobenzene ND 10.0 9.749 ug/L 97 70 -119 0 18 1,4-Dichlorobenzene ND 10.0 9.669 ug/L 97 74 -117 2 17 Dichlorodifluoromethane ND 10.0 10.36 ug/L 104 21 -165 4 26 1,1-Dichloroethane ND 10.0 11.27 ug/L 90 59 -125 4 20 1,2-Dichloroethane ND 10.0 9.443 ug/L 94 57 -149 1 27 Eurofins Pittsburgh Page 104 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: B-1Lab Sample ID: 180-133790-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389102 cis-1,2-Dichloroethene 6.12 10.0 14.76 ug/L 86 64 -122 6 22 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD trans-1,2-Dichloroethene ND 10.0 9.218 ug/L 92 62 -126 7 23 1,1-Dichloroethene ND 10.0 9.969 ug/L 100 49 -132 4 23 1,2-Dichloropropane ND 10.0 8.642 ug/L 86 65 -129 4 23 cis-1,3-Dichloropropene ND 10.0 8.838 ug/L 88 53 -140 4 26 trans-1,3-Dichloropropene ND 10.0 8.179 ug/L 82 57 -137 1 25 1,4-Dioxane ND 200 ND ug/L NC 10 -170 NC 35 Ethylbenzene ND 10.0 9.853 ug/L 99 66 -122 1 22 2-Hexanone ND 10.0 5.280 ug/L 53 38 -157 14 35 Isopropylbenzene ND 10.0 9.949 ug/L 99 54 -130 0 22 Methyl acetate ND 20.0 ND ug/L 70 10 -170 2 35 Methylcyclohexane ND 10.0 9.565 ug/L 96 60 -127 8 26 Methylene Chloride ND 10.0 8.792 ug/L 88 51 -137 6 35 4-Methyl-2-pentanone (MIBK)ND 10.0 8.404 ug/L 84 29 -167 4 35 Methyl tert-butyl ether ND 10.0 8.541 ug/L 85 36 -141 3 35 Styrene ND 10.0 10.16 ug/L 102 68 -127 2 22 1,1,2,2-Tetrachloroethane ND 10.0 8.525 ug/L 85 47 -147 6 35 Tetrachloroethene ND 10.0 9.728 ug/L 97 60 -129 6 22 Toluene ND 10.0 9.848 ug/L 98 67 -128 1 22 1,2,3-Trichlorobenzene ND 10.0 5.602 ug/L 56 10 -170 31 35 1,2,4-Trichlorobenzene ND 10.0 6.592 ug/L 66 15 -169 5 35 1,1,1-Trichloroethane ND 10.0 9.462 ug/L 95 64 -133 4 22 1,1,2-Trichloroethane ND 10.0 9.014 ug/L 90 59 -137 5 29 Trichloroethene ND 10.0 9.397 ug/L 94 67 -121 4 23 Trichlorofluoromethane ND 10.0 9.293 ug/L 93 32 -157 10 35 1,1,2-Trichlorotrifluoroethane ND 10.0 9.018 ug/L 90 48 -134 3 28 Vinyl chloride ND 10.0 10.08 ug/L 101 47 -147 7 25 m-Xylene & p-Xylene ND 10.0 10.09 ug/L 101 61 -128 3 21 o-Xylene ND 10.0 9.715 ug/L 97 64 -120 2 23 1,2-Dibromoethane ND 10.0 8.651 ug/L 87 55 -146 2 30 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 87 MSD MSD Qualifier Limits%Recovery 97Toluene-d8 (Surr)53 -124 994-Bromofluorobenzene (Surr)49 -118 90Dibromofluoromethane (Surr)60 -132 Client Sample ID: Method BlankLab Sample ID: MB 180-389226/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 389226 RL MDL Acetone ND 20.0 ug/L 02/23/22 09:34 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/23/22 09:34 1Benzene ND 5.00 ug/L 02/23/22 09:34 1Chlorobromomethane ND 5.00 ug/L 02/23/22 09:34 1Dichlorobromomethane ND 5.00 ug/L 02/23/22 09:34 1Bromoform ND 5.00 ug/L 02/23/22 09:34 1Bromomethane Eurofins Pittsburgh Page 105 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389226/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 389226 RL MDL 2-Butanone (MEK)ND 5.00 ug/L 02/23/22 09:34 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/23/22 09:34 1Carbon disulfide ND 5.00 ug/L 02/23/22 09:34 1Carbon tetrachloride ND 5.00 ug/L 02/23/22 09:34 1Chlorobenzene ND 5.00 ug/L 02/23/22 09:34 1Chlorodibromomethane ND 5.00 ug/L 02/23/22 09:34 1Chloroethane ND 5.00 ug/L 02/23/22 09:34 1Chloroform ND 5.00 ug/L 02/23/22 09:34 1Chloromethane ND 5.00 ug/L 02/23/22 09:34 1Cyclohexane ND 5.00 ug/L 02/23/22 09:34 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/23/22 09:34 11,2-Dichlorobenzene ND 5.00 ug/L 02/23/22 09:34 11,3-Dichlorobenzene ND 5.00 ug/L 02/23/22 09:34 11,4-Dichlorobenzene ND 5.00 ug/L 02/23/22 09:34 1Dichlorodifluoromethane ND 5.00 ug/L 02/23/22 09:34 11,1-Dichloroethane ND 5.00 ug/L 02/23/22 09:34 11,2-Dichloroethane ND 5.00 ug/L 02/23/22 09:34 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 09:34 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/23/22 09:34 11,1-Dichloroethene ND 5.00 ug/L 02/23/22 09:34 11,2-Dichloropropane ND 5.00 ug/L 02/23/22 09:34 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/23/22 09:34 1trans-1,3-Dichloropropene ND 1000 ug/L 02/23/22 09:34 11,4-Dioxane ND 5.00 ug/L 02/23/22 09:34 1Ethylbenzene ND 5.00 ug/L 02/23/22 09:34 12-Hexanone ND 5.00 ug/L 02/23/22 09:34 1Isopropylbenzene ND 25.0 ug/L 02/23/22 09:34 1Methyl acetate ND 5.00 ug/L 02/23/22 09:34 1Methylcyclohexane ND 5.00 ug/L 02/23/22 09:34 1Methylene Chloride ND 5.00 ug/L 02/23/22 09:34 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 02/23/22 09:34 1Methyl tert-butyl ether ND 5.00 ug/L 02/23/22 09:34 1Styrene ND 5.00 ug/L 02/23/22 09:34 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/23/22 09:34 1Tetrachloroethene ND 5.00 ug/L 02/23/22 09:34 1Toluene ND 5.00 ug/L 02/23/22 09:34 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/23/22 09:34 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/23/22 09:34 11,1,1-Trichloroethane ND 5.00 ug/L 02/23/22 09:34 11,1,2-Trichloroethane ND 5.00 ug/L 02/23/22 09:34 1Trichloroethene ND 5.00 ug/L 02/23/22 09:34 1Trichlorofluoromethane ND 5.00 ug/L 02/23/22 09:34 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/23/22 09:34 1Vinyl chloride ND 5.00 ug/L 02/23/22 09:34 1m-Xylene & p-Xylene ND 5.00 ug/L 02/23/22 09:34 1o-Xylene ND 5.00 ug/L 02/23/22 09:34 11,2-Dibromoethane Eurofins Pittsburgh Page 106 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389226/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 389226 1,2-Dichloroethane-d4 (Surr)89 52 -151 02/23/22 09:34 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 87 02/23/22 09:34 1Toluene-d8 (Surr)53 -124 81 02/23/22 09:34 14-Bromofluorobenzene (Surr)49 -118 92 02/23/22 09:34 1Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389226/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 389226 Acetone 10.0 7.952 J ug/L 80 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 10.0 8.310 ug/L 83 68 -122 Chlorobromomethane 10.0 8.454 ug/L 85 59 -133 Dichlorobromomethane 10.0 8.544 ug/L 85 63 -132 Bromoform 10.0 10.74 ug/L 107 31 -164 Bromomethane 10.0 8.897 ug/L 89 20 -170 2-Butanone (MEK)10.0 7.715 ug/L 77 35 -158 Carbon disulfide 10.0 9.031 ug/L 90 32 -139 Carbon tetrachloride 10.0 8.741 ug/L 87 60 -135 Chlorobenzene 10.0 8.704 ug/L 87 72 -123 Chlorodibromomethane 10.0 9.459 ug/L 95 51 -144 Chloroethane 10.0 8.694 ug/L 87 10 -170 Chloroform 10.0 9.054 ug/L 91 62 -121 Chloromethane 10.0 7.806 ug/L 78 37 -170 Cyclohexane 10.0 7.745 ug/L 77 50 -161 1,2-Dibromo-3-Chloropropane 10.0 7.213 ug/L 72 10 -170 1,2-Dichlorobenzene 10.0 8.915 ug/L 89 68 -116 1,3-Dichlorobenzene 10.0 8.830 ug/L 88 70 -119 1,4-Dichlorobenzene 10.0 9.294 ug/L 93 74 -117 Dichlorodifluoromethane 10.0 5.976 ug/L 60 21 -165 1,1-Dichloroethane 10.0 8.134 ug/L 81 59 -125 1,2-Dichloroethane 10.0 8.491 ug/L 85 57 -149 cis-1,2-Dichloroethene 10.0 8.663 ug/L 87 64 -122 trans-1,2-Dichloroethene 10.0 8.308 ug/L 83 62 -126 1,1-Dichloroethene 10.0 7.735 ug/L 77 49 -132 1,2-Dichloropropane 10.0 8.118 ug/L 81 65 -129 cis-1,3-Dichloropropene 10.0 9.163 ug/L 92 53 -140 trans-1,3-Dichloropropene 10.0 8.879 ug/L 89 57 -137 1,4-Dioxane 200 ND ug/L 69 10 -170 Ethylbenzene 10.0 8.441 ug/L 84 66 -122 2-Hexanone 10.0 7.816 ug/L 78 38 -157 Isopropylbenzene 10.0 8.822 ug/L 88 54 -130 Methyl acetate 20.0 13.74 J ug/L 69 10 -170 Methylcyclohexane 10.0 7.872 ug/L 79 60 -127 Methylene Chloride 10.0 8.966 ug/L 90 51 -137 4-Methyl-2-pentanone (MIBK)10.0 8.062 ug/L 81 29 -167 Methyl tert-butyl ether 10.0 8.296 ug/L 83 36 -141 Styrene 10.0 9.683 ug/L 97 68 -127 Eurofins Pittsburgh Page 107 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389226/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 389226 1,1,2,2-Tetrachloroethane 10.0 8.521 ug/L 85 47 -147 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Tetrachloroethene 10.0 9.135 ug/L 91 60 -129 Toluene 10.0 8.617 ug/L 86 67 -128 1,2,3-Trichlorobenzene 10.0 5.755 ug/L 58 10 -170 1,2,4-Trichlorobenzene 10.0 7.520 ug/L 75 15 -169 1,1,1-Trichloroethane 10.0 8.557 ug/L 86 64 -133 1,1,2-Trichloroethane 10.0 8.851 ug/L 89 59 -137 Trichloroethene 10.0 8.668 ug/L 87 67 -121 Trichlorofluoromethane 10.0 7.896 ug/L 79 32 -157 1,1,2-Trichlorotrifluoroethane 10.0 7.893 ug/L 79 48 -134 Vinyl chloride 10.0 7.662 ug/L 77 47 -147 m-Xylene & p-Xylene 10.0 8.522 ug/L 85 61 -128 o-Xylene 10.0 9.047 ug/L 90 64 -120 1,2-Dibromoethane 10.0 8.576 ug/L 86 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 90 LCS LCS Qualifier Limits%Recovery 94Toluene-d8 (Surr)53 -124 1034-Bromofluorobenzene (Surr)49 -118 91Dibromofluoromethane (Surr)60 -132 Client Sample ID: Method BlankLab Sample ID: MB 180-389414/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 389414 RL MDL Acetone ND 20.0 ug/L 02/24/22 11:31 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/24/22 11:31 1Benzene ND 5.00 ug/L 02/24/22 11:31 1Chlorobromomethane ND 5.00 ug/L 02/24/22 11:31 1Dichlorobromomethane ND 5.00 ug/L 02/24/22 11:31 1Bromoform ND 5.00 ug/L 02/24/22 11:31 1Bromomethane ND 5.00 ug/L 02/24/22 11:31 12-Butanone (MEK) ND 5.00 ug/L 02/24/22 11:31 1Carbon disulfide ND 5.00 ug/L 02/24/22 11:31 1Carbon tetrachloride ND 5.00 ug/L 02/24/22 11:31 1Chlorobenzene ND 5.00 ug/L 02/24/22 11:31 1Chlorodibromomethane ND 5.00 ug/L 02/24/22 11:31 1Chloroethane ND 5.00 ug/L 02/24/22 11:31 1Chloroform ND 5.00 ug/L 02/24/22 11:31 1Chloromethane ND 5.00 ug/L 02/24/22 11:31 1Cyclohexane ND 5.00 ug/L 02/24/22 11:31 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/24/22 11:31 11,2-Dichlorobenzene ND 5.00 ug/L 02/24/22 11:31 11,3-Dichlorobenzene ND 5.00 ug/L 02/24/22 11:31 11,4-Dichlorobenzene ND 5.00 ug/L 02/24/22 11:31 1Dichlorodifluoromethane ND 5.00 ug/L 02/24/22 11:31 11,1-Dichloroethane ND 5.00 ug/L 02/24/22 11:31 11,2-Dichloroethane Eurofins Pittsburgh Page 108 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389414/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 389414 RL MDL cis-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 11:31 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/24/22 11:31 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/24/22 11:31 11,1-Dichloroethene ND 5.00 ug/L 02/24/22 11:31 11,2-Dichloropropane ND 5.00 ug/L 02/24/22 11:31 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/24/22 11:31 1trans-1,3-Dichloropropene ND 1000 ug/L 02/24/22 11:31 11,4-Dioxane ND 5.00 ug/L 02/24/22 11:31 1Ethylbenzene ND 5.00 ug/L 02/24/22 11:31 12-Hexanone ND 5.00 ug/L 02/24/22 11:31 1Isopropylbenzene ND 25.0 ug/L 02/24/22 11:31 1Methyl acetate ND 5.00 ug/L 02/24/22 11:31 1Methylcyclohexane ND 5.00 ug/L 02/24/22 11:31 1Methylene Chloride ND 5.00 ug/L 02/24/22 11:31 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 02/24/22 11:31 1Methyl tert-butyl ether ND 5.00 ug/L 02/24/22 11:31 1Styrene ND 5.00 ug/L 02/24/22 11:31 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/24/22 11:31 1Tetrachloroethene ND 5.00 ug/L 02/24/22 11:31 1Toluene ND 5.00 ug/L 02/24/22 11:31 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/24/22 11:31 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/24/22 11:31 11,1,1-Trichloroethane ND 5.00 ug/L 02/24/22 11:31 11,1,2-Trichloroethane ND 5.00 ug/L 02/24/22 11:31 1Trichloroethene ND 5.00 ug/L 02/24/22 11:31 1Trichlorofluoromethane ND 5.00 ug/L 02/24/22 11:31 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/24/22 11:31 1Vinyl chloride ND 5.00 ug/L 02/24/22 11:31 1m-Xylene & p-Xylene ND 5.00 ug/L 02/24/22 11:31 1o-Xylene ND 5.00 ug/L 02/24/22 11:31 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)90 52 -151 02/24/22 11:31 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 96 02/24/22 11:31 1Toluene-d8 (Surr)53 -124 94 02/24/22 11:31 14-Bromofluorobenzene (Surr)49 -118 94 02/24/22 11:31 1Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389414/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 389414 Acetone 10.0 11.68 J ug/L 117 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 10.0 9.319 ug/L 93 68 -122 Chlorobromomethane 10.0 8.588 ug/L 86 59 -133 Dichlorobromomethane 10.0 7.903 ug/L 79 63 -132 Bromoform 10.0 8.440 ug/L 84 31 -164 Bromomethane 10.0 11.54 ug/L 115 20 -170 Eurofins Pittsburgh Page 109 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389414/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 389414 2-Butanone (MEK)10.0 8.503 ug/L 85 35 -158 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Carbon disulfide 10.0 11.14 ug/L 111 32 -139 Carbon tetrachloride 10.0 9.169 ug/L 92 60 -135 Chlorobenzene 10.0 8.546 ug/L 85 72 -123 Chlorodibromomethane 10.0 9.636 ug/L 96 51 -144 Chloroethane 10.0 12.66 ug/L 127 10 -170 Chloroform 10.0 9.230 ug/L 92 62 -121 Chloromethane 10.0 11.23 ug/L 112 37 -170 Cyclohexane 10.0 7.463 ug/L 75 50 -161 1,2-Dibromo-3-Chloropropane 10.0 9.243 ug/L 92 10 -170 1,2-Dichlorobenzene 10.0 8.353 ug/L 84 68 -116 1,3-Dichlorobenzene 10.0 7.853 ug/L 79 70 -119 1,4-Dichlorobenzene 10.0 8.035 ug/L 80 74 -117 Dichlorodifluoromethane 10.0 7.875 ug/L 79 21 -165 1,1-Dichloroethane 10.0 9.877 ug/L 99 59 -125 1,2-Dichloroethane 10.0 8.727 ug/L 87 57 -149 cis-1,2-Dichloroethene 10.0 9.636 ug/L 96 64 -122 trans-1,2-Dichloroethene 10.0 8.270 ug/L 83 62 -126 1,1-Dichloroethene 10.0 13.31 *+ ug/L 133 49 -132 1,2-Dichloropropane 10.0 8.878 ug/L 89 65 -129 cis-1,3-Dichloropropene 10.0 9.508 ug/L 95 53 -140 trans-1,3-Dichloropropene 10.0 10.05 ug/L 100 57 -137 1,4-Dioxane 200 235.6 J ug/L 118 10 -170 Ethylbenzene 10.0 8.749 ug/L 87 66 -122 2-Hexanone 10.0 11.18 ug/L 112 38 -157 Isopropylbenzene 10.0 7.780 ug/L 78 54 -130 Methyl acetate 20.0 15.34 J ug/L 77 10 -170 Methylcyclohexane 10.0 7.872 ug/L 79 60 -127 Methylene Chloride 10.0 12.29 ug/L 123 51 -137 4-Methyl-2-pentanone (MIBK)10.0 10.15 ug/L 101 29 -167 Methyl tert-butyl ether 10.0 11.33 ug/L 113 36 -141 Styrene 10.0 8.767 ug/L 88 68 -127 1,1,2,2-Tetrachloroethane 10.0 10.91 ug/L 109 47 -147 Tetrachloroethene 10.0 7.920 ug/L 79 60 -129 Toluene 10.0 9.839 ug/L 98 67 -128 1,2,3-Trichlorobenzene 10.0 5.736 ug/L 57 10 -170 1,2,4-Trichlorobenzene 10.0 5.804 ug/L 58 15 -169 1,1,1-Trichloroethane 10.0 10.12 ug/L 101 64 -133 1,1,2-Trichloroethane 10.0 10.05 ug/L 101 59 -137 Trichloroethene 10.0 8.472 ug/L 85 67 -121 Trichlorofluoromethane 10.0 11.19 ug/L 112 32 -157 1,1,2-Trichlorotrifluoroethane 10.0 11.72 ug/L 117 48 -134 Vinyl chloride 10.0 10.64 ug/L 106 47 -147 m-Xylene & p-Xylene 10.0 8.753 ug/L 88 61 -128 o-Xylene 10.0 8.887 ug/L 89 64 -120 1,2-Dibromoethane 10.0 9.824 ug/L 98 55 -146 Eurofins Pittsburgh Page 110 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389414/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 389414 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 89 LCS LCS Qualifier Limits%Recovery 93Toluene-d8 (Surr)53 -124 904-Bromofluorobenzene (Surr)49 -118 101Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 180-389414/25 Matrix: Water Prep Type: Total/NA Analysis Batch: 389414 Acetone 10.0 7.222 J *1 ug/L 72 29 -163 47 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 10.0 10.01 ug/L 100 68 -122 7 21 Chlorobromomethane 10.0 10.36 ug/L 104 59 -133 19 26 Dichlorobromomethane 10.0 8.318 ug/L 83 63 -132 5 24 Bromoform 10.0 7.164 ug/L 72 31 -164 16 35 Bromomethane 10.0 10.59 ug/L 106 20 -170 9 30 2-Butanone (MEK)10.0 6.525 ug/L 65 35 -158 26 35 Carbon disulfide 10.0 8.306 *1 ug/L 83 32 -139 29 25 Carbon tetrachloride 10.0 7.072 *1 ug/L 71 60 -135 26 25 Chlorobenzene 10.0 8.183 ug/L 82 72 -123 4 19 Chlorodibromomethane 10.0 8.998 ug/L 90 51 -144 7 25 Chloroethane 10.0 10.78 ug/L 108 10 -170 16 29 Chloroform 10.0 10.36 ug/L 104 62 -121 12 22 Chloromethane 10.0 9.583 ug/L 96 37 -170 16 28 Cyclohexane 10.0 5.704 ug/L 57 50 -161 27 28 1,2-Dibromo-3-Chloropropane 10.0 7.366 ug/L 74 10 -170 23 35 1,2-Dichlorobenzene 10.0 8.146 ug/L 81 68 -116 3 20 1,3-Dichlorobenzene 10.0 7.427 ug/L 74 70 -119 6 18 1,4-Dichlorobenzene 10.0 7.816 ug/L 78 74 -117 3 17 Dichlorodifluoromethane 10.0 5.142 *1 ug/L 51 21 -165 42 26 1,1-Dichloroethane 10.0 10.49 ug/L 105 59 -125 6 20 1,2-Dichloroethane 10.0 9.517 ug/L 95 57 -149 9 27 cis-1,2-Dichloroethene 10.0 11.59 ug/L 116 64 -122 18 22 trans-1,2-Dichloroethene 10.0 9.705 ug/L 97 62 -126 16 23 1,1-Dichloroethene 10.0 10.35 *1 ug/L 104 49 -132 25 23 1,2-Dichloropropane 10.0 9.646 ug/L 96 65 -129 8 23 cis-1,3-Dichloropropene 10.0 8.816 ug/L 88 53 -140 8 26 trans-1,3-Dichloropropene 10.0 8.877 ug/L 89 57 -137 12 25 1,4-Dioxane 200 ND *1 ug/L 53 10 -170 76 35 Ethylbenzene 10.0 7.914 ug/L 79 66 -122 10 22 2-Hexanone 10.0 10.18 ug/L 102 38 -157 9 35 Isopropylbenzene 10.0 6.387 ug/L 64 54 -130 20 22 Methyl acetate 20.0 16.95 J ug/L 85 10 -170 10 35 Methylcyclohexane 10.0 6.086 ug/L 61 60 -127 26 26 Methylene Chloride 10.0 12.44 ug/L 124 51 -137 1 35 4-Methyl-2-pentanone (MIBK)10.0 8.939 ug/L 89 29 -167 13 35 Methyl tert-butyl ether 10.0 12.60 ug/L 126 36 -141 11 35 Styrene 10.0 8.089 ug/L 81 68 -127 8 22 Eurofins Pittsburgh Page 111 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 180-389414/25 Matrix: Water Prep Type: Total/NA Analysis Batch: 389414 1,1,2,2-Tetrachloroethane 10.0 10.03 ug/L 100 47 -147 8 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Tetrachloroethene 10.0 7.118 ug/L 71 60 -129 11 22 Toluene 10.0 9.726 ug/L 97 67 -128 1 22 1,2,3-Trichlorobenzene 10.0 3.762 J *1 ug/L 38 10 -170 42 35 1,2,4-Trichlorobenzene 10.0 4.726 J ug/L 47 15 -169 20 35 1,1,1-Trichloroethane 10.0 8.607 ug/L 86 64 -133 16 22 1,1,2-Trichloroethane 10.0 10.57 ug/L 106 59 -137 5 29 Trichloroethene 10.0 8.395 ug/L 84 67 -121 1 23 Trichlorofluoromethane 10.0 7.841 ug/L 78 32 -157 35 35 1,1,2-Trichlorotrifluoroethane 10.0 8.378 *1 ug/L 84 48 -134 33 28 Vinyl chloride 10.0 7.876 *1 ug/L 79 47 -147 30 25 m-Xylene & p-Xylene 10.0 7.712 ug/L 77 61 -128 13 21 o-Xylene 10.0 8.047 ug/L 80 64 -120 10 23 1,2-Dibromoethane 10.0 9.796 ug/L 98 55 -146 0 30 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 101 LCSD LCSD Qualifier Limits%Recovery 98Toluene-d8 (Surr)53 -124 944-Bromofluorobenzene (Surr)49 -118 96Dibromofluoromethane (Surr)60 -132 Client Sample ID: Method BlankLab Sample ID: MB 180-389531/34 Matrix: Water Prep Type: Total/NA Analysis Batch: 389531 RL MDL Acetone ND 20.0 ug/L 02/25/22 11:59 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/25/22 11:59 1Benzene ND 5.00 ug/L 02/25/22 11:59 1Chlorobromomethane ND 5.00 ug/L 02/25/22 11:59 1Dichlorobromomethane ND 5.00 ug/L 02/25/22 11:59 1Bromoform ND 5.00 ug/L 02/25/22 11:59 1Bromomethane ND 5.00 ug/L 02/25/22 11:59 12-Butanone (MEK) ND 5.00 ug/L 02/25/22 11:59 1Carbon disulfide ND 5.00 ug/L 02/25/22 11:59 1Carbon tetrachloride ND 5.00 ug/L 02/25/22 11:59 1Chlorobenzene ND 5.00 ug/L 02/25/22 11:59 1Chlorodibromomethane ND 5.00 ug/L 02/25/22 11:59 1Chloroethane ND 5.00 ug/L 02/25/22 11:59 1Chloroform ND 5.00 ug/L 02/25/22 11:59 1Chloromethane ND 5.00 ug/L 02/25/22 11:59 1Cyclohexane ND 5.00 ug/L 02/25/22 11:59 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/25/22 11:59 11,2-Dichlorobenzene ND 5.00 ug/L 02/25/22 11:59 11,3-Dichlorobenzene ND 5.00 ug/L 02/25/22 11:59 11,4-Dichlorobenzene ND 5.00 ug/L 02/25/22 11:59 1Dichlorodifluoromethane ND 5.00 ug/L 02/25/22 11:59 11,1-Dichloroethane ND 5.00 ug/L 02/25/22 11:59 11,2-Dichloroethane Eurofins Pittsburgh Page 112 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389531/34 Matrix: Water Prep Type: Total/NA Analysis Batch: 389531 RL MDL cis-1,2-Dichloroethene ND 5.00 ug/L 02/25/22 11:59 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/25/22 11:59 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/25/22 11:59 11,1-Dichloroethene ND 5.00 ug/L 02/25/22 11:59 11,2-Dichloropropane ND 5.00 ug/L 02/25/22 11:59 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/25/22 11:59 1trans-1,3-Dichloropropene ND 1000 ug/L 02/25/22 11:59 11,4-Dioxane ND 5.00 ug/L 02/25/22 11:59 1Ethylbenzene ND 5.00 ug/L 02/25/22 11:59 12-Hexanone ND 5.00 ug/L 02/25/22 11:59 1Isopropylbenzene ND 25.0 ug/L 02/25/22 11:59 1Methyl acetate ND 5.00 ug/L 02/25/22 11:59 1Methylcyclohexane ND 5.00 ug/L 02/25/22 11:59 1Methylene Chloride ND 5.00 ug/L 02/25/22 11:59 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 02/25/22 11:59 1Methyl tert-butyl ether ND 5.00 ug/L 02/25/22 11:59 1Styrene ND 5.00 ug/L 02/25/22 11:59 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/25/22 11:59 1Tetrachloroethene ND 5.00 ug/L 02/25/22 11:59 1Toluene ND 5.00 ug/L 02/25/22 11:59 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/25/22 11:59 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/25/22 11:59 11,1,1-Trichloroethane ND 5.00 ug/L 02/25/22 11:59 11,1,2-Trichloroethane ND 5.00 ug/L 02/25/22 11:59 1Trichloroethene ND 5.00 ug/L 02/25/22 11:59 1Trichlorofluoromethane ND 5.00 ug/L 02/25/22 11:59 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/25/22 11:59 1Vinyl chloride ND 5.00 ug/L 02/25/22 11:59 1m-Xylene & p-Xylene ND 5.00 ug/L 02/25/22 11:59 1o-Xylene ND 5.00 ug/L 02/25/22 11:59 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)74 52 -151 02/25/22 11:59 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 97 02/25/22 11:59 1Toluene-d8 (Surr)53 -124 88 02/25/22 11:59 14-Bromofluorobenzene (Surr)49 -118 77 02/25/22 11:59 1Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389531/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 389531 Acetone 10.0 7.237 J ug/L 72 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 10.0 9.763 ug/L 98 68 -122 Chlorobromomethane 10.0 8.129 ug/L 81 59 -133 Dichlorobromomethane 10.0 8.650 ug/L 87 63 -132 Bromoform 10.0 7.719 ug/L 77 31 -164 Bromomethane 10.0 10.81 ug/L 108 20 -170 Eurofins Pittsburgh Page 113 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389531/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 389531 2-Butanone (MEK)10.0 8.881 ug/L 89 35 -158 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Carbon disulfide 10.0 10.28 ug/L 103 32 -139 Carbon tetrachloride 10.0 8.217 ug/L 82 60 -135 Chlorobenzene 10.0 7.949 ug/L 79 72 -123 Chlorodibromomethane 10.0 9.121 ug/L 91 51 -144 Chloroethane 10.0 11.54 ug/L 115 10 -170 Chloroform 10.0 7.875 ug/L 79 62 -121 Chloromethane 10.0 10.73 ug/L 107 37 -170 Cyclohexane 10.0 7.623 ug/L 76 50 -161 1,2-Dibromo-3-Chloropropane 10.0 9.136 ug/L 91 10 -170 1,2-Dichlorobenzene 10.0 8.171 ug/L 82 68 -116 1,3-Dichlorobenzene 10.0 7.813 ug/L 78 70 -119 1,4-Dichlorobenzene 10.0 7.874 ug/L 79 74 -117 Dichlorodifluoromethane 10.0 10.78 ug/L 108 21 -165 1,1-Dichloroethane 10.0 9.807 ug/L 98 59 -125 1,2-Dichloroethane 10.0 8.741 ug/L 87 57 -149 cis-1,2-Dichloroethene 10.0 8.733 ug/L 87 64 -122 trans-1,2-Dichloroethene 10.0 9.332 ug/L 93 62 -126 1,1-Dichloroethene 10.0 12.15 ug/L 121 49 -132 1,2-Dichloropropane 10.0 9.220 ug/L 92 65 -129 cis-1,3-Dichloropropene 10.0 8.878 ug/L 89 53 -140 trans-1,3-Dichloropropene 10.0 8.982 ug/L 90 57 -137 1,4-Dioxane 200 233.6 J ug/L 117 10 -170 Ethylbenzene 10.0 8.201 ug/L 82 66 -122 2-Hexanone 10.0 8.226 ug/L 82 38 -157 Isopropylbenzene 10.0 7.233 ug/L 72 54 -130 Methyl acetate 20.0 15.26 J ug/L 76 10 -170 Methylcyclohexane 10.0 7.633 ug/L 76 60 -127 Methylene Chloride 10.0 10.83 ug/L 108 51 -137 4-Methyl-2-pentanone (MIBK)10.0 8.217 ug/L 82 29 -167 Methyl tert-butyl ether 10.0 9.492 ug/L 95 36 -141 Styrene 10.0 8.300 ug/L 83 68 -127 1,1,2,2-Tetrachloroethane 10.0 9.409 ug/L 94 47 -147 Tetrachloroethene 10.0 7.783 ug/L 78 60 -129 Toluene 10.0 9.049 ug/L 90 67 -128 1,2,3-Trichlorobenzene 10.0 5.410 ug/L 54 10 -170 1,2,4-Trichlorobenzene 10.0 5.955 ug/L 60 15 -169 1,1,1-Trichloroethane 10.0 9.382 ug/L 94 64 -133 1,1,2-Trichloroethane 10.0 8.887 ug/L 89 59 -137 Trichloroethene 10.0 8.833 ug/L 88 67 -121 Trichlorofluoromethane 10.0 9.970 ug/L 100 32 -157 1,1,2-Trichlorotrifluoroethane 10.0 10.44 ug/L 104 48 -134 Vinyl chloride 10.0 10.16 ug/L 102 47 -147 m-Xylene & p-Xylene 10.0 8.141 ug/L 81 61 -128 o-Xylene 10.0 8.268 ug/L 83 64 -120 1,2-Dibromoethane 10.0 9.139 ug/L 91 55 -146 Eurofins Pittsburgh Page 114 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389531/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 389531 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 89 LCS LCS Qualifier Limits%Recovery 87Toluene-d8 (Surr)53 -124 844-Bromofluorobenzene (Surr)49 -118 92Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix SpikeLab Sample ID: 180-133991-D-7 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389531 Acetone 52.4 E *3 10.0 ND 4 ug/L -461 29 -163 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND *3 10.0 10.47 ug/L 105 68 -122 Chlorobromomethane ND *3 10.0 9.152 ug/L 92 59 -133 Dichlorobromomethane ND *3 10.0 7.612 ug/L 76 63 -132 Bromoform ND *3 10.0 6.765 ug/L 68 31 -164 Bromomethane ND *3 10.0 10.69 ug/L 107 20 -170 2-Butanone (MEK)19.1 *3 F1 10.0 5.806 F1 ug/L -133 35 -158 Carbon disulfide ND *3 10.0 10.05 ug/L 101 32 -139 Carbon tetrachloride ND *3 10.0 8.673 ug/L 87 60 -135 Chlorobenzene ND *3 F1 F2 10.0 16.98 F1 ug/L 170 72 -123 Chlorodibromomethane ND *3 10.0 7.838 ug/L 78 51 -144 Chloroethane ND *3 10.0 11.33 ug/L 113 10 -170 Chloroform ND *3 10.0 8.720 ug/L 87 62 -121 Chloromethane ND *3 10.0 14.76 ug/L 148 37 -170 Cyclohexane ND *3 10.0 8.261 ug/L 83 50 -161 1,2-Dibromo-3-Chloropropane ND *3 10.0 7.740 ug/L 77 10 -170 1,2-Dichlorobenzene ND *3 F1 F2 10.0 28.40 F1 ug/L 284 68 -116 1,3-Dichlorobenzene ND *3 10.0 7.561 ug/L 76 70 -119 1,4-Dichlorobenzene ND *3 10.0 8.282 ug/L 83 74 -117 Dichlorodifluoromethane ND *3 10.0 10.32 ug/L 103 21 -165 1,1-Dichloroethane ND *3 F1 10.0 12.85 F1 ug/L 128 59 -125 1,2-Dichloroethane 6.72 *3 F1 10.0 10.37 F1 ug/L 36 57 -149 cis-1,2-Dichloroethene 1000 E *3 10.0 59.93 E 4 ug/L -9440 64 -122 trans-1,2-Dichloroethene 26.1 *3 F1 10.0 11.52 F1 ug/L -146 62 -126 1,1-Dichloroethene ND *3 F2 10.0 8.636 ug/L 55 49 -132 1,2-Dichloropropane ND *3 10.0 9.120 ug/L 91 65 -129 cis-1,3-Dichloropropene ND *3 10.0 8.582 ug/L 86 53 -140 trans-1,3-Dichloropropene ND *3 10.0 9.014 ug/L 90 57 -137 1,4-Dioxane ND *3 200 ND ug/L NC 10 -170 Ethylbenzene ND *3 10.0 8.252 ug/L 83 66 -122 2-Hexanone ND *3 10.0 8.009 ug/L 80 38 -157 Isopropylbenzene ND *3 10.0 7.017 ug/L 70 54 -130 Methyl acetate ND *3 20.0 ND ug/L 84 10 -170 Methylcyclohexane ND *3 10.0 7.585 ug/L 76 60 -127 Methylene Chloride ND *3 10.0 9.167 ug/L 92 51 -137 4-Methyl-2-pentanone (MIBK)ND *3 10.0 9.567 ug/L 66 29 -167 Methyl tert-butyl ether ND *3 10.0 10.67 ug/L 107 36 -141 Styrene ND *3 10.0 7.604 ug/L 76 68 -127 Eurofins Pittsburgh Page 115 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 180-133991-D-7 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389531 1,1,2,2-Tetrachloroethane ND *3 10.0 8.269 ug/L 83 47 -147 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Tetrachloroethene ND *3 10.0 7.815 ug/L 78 60 -129 Toluene ND *3 10.0 10.20 ug/L 102 67 -128 1,2,3-Trichlorobenzene ND *3 F1 10.0 ND F1 ug/L 0 10 -170 1,2,4-Trichlorobenzene ND *3 10.0 ND ug/L 46 15 -169 1,1,1-Trichloroethane ND *3 10.0 9.697 ug/L 97 64 -133 1,1,2-Trichloroethane ND *3 10.0 9.621 ug/L 96 59 -137 Trichloroethene ND *3 10.0 11.41 ug/L 114 67 -121 Trichlorofluoromethane ND *3 10.0 9.002 ug/L 90 32 -157 1,1,2-Trichlorotrifluoroethane ND *3 10.0 10.81 ug/L 108 48 -134 Vinyl chloride 483 E *3 10.0 31.84 4 ug/L -4510 47 -147 m-Xylene & p-Xylene ND *3 10.0 8.090 ug/L 81 61 -128 o-Xylene ND *3 10.0 7.932 ug/L 79 64 -120 1,2-Dibromoethane ND *3 10.0 9.001 ug/L 90 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 84 MS MS Qualifier Limits%Recovery 103Toluene-d8 (Surr)53 -124 934-Bromofluorobenzene (Surr)49 -118 97Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-133991-D-7 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389531 Acetone 52.4 E *3 10.0 ND 4 ug/L 0 29 -163 NC 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND *3 10.0 10.33 ug/L 103 68 -122 1 21 Chlorobromomethane ND *3 10.0 10.11 ug/L 101 59 -133 10 26 Dichlorobromomethane ND *3 10.0 8.450 ug/L 85 63 -132 10 24 Bromoform ND *3 10.0 7.415 ug/L 74 31 -164 9 35 Bromomethane ND *3 10.0 11.29 ug/L 113 20 -170 5 30 2-Butanone (MEK)19.1 *3 F1 10.0 7.878 F1 ug/L -112 35 -158 30 35 Carbon disulfide ND *3 10.0 8.461 ug/L 85 32 -139 17 25 Carbon tetrachloride ND *3 10.0 8.632 ug/L 86 60 -135 0 25 Chlorobenzene ND *3 F1 F2 10.0 9.477 F2 ug/L 95 72 -123 57 19 Chlorodibromomethane ND *3 10.0 9.070 ug/L 91 51 -144 15 25 Chloroethane ND *3 10.0 11.83 ug/L 118 10 -170 4 29 Chloroform ND *3 10.0 8.804 ug/L 88 62 -121 1 22 Chloromethane ND *3 10.0 15.41 ug/L 154 37 -170 4 28 Cyclohexane ND *3 10.0 7.827 ug/L 78 50 -161 5 28 1,2-Dibromo-3-Chloropropane ND *3 10.0 9.867 ug/L 99 10 -170 24 35 1,2-Dichlorobenzene ND *3 F1 F2 10.0 13.07 F1 F2 ug/L 131 68 -116 74 20 1,3-Dichlorobenzene ND *3 10.0 8.777 ug/L 88 70 -119 15 18 1,4-Dichlorobenzene ND *3 10.0 9.037 ug/L 90 74 -117 9 17 Dichlorodifluoromethane ND *3 10.0 10.66 ug/L 107 21 -165 3 26 1,1-Dichloroethane ND *3 F1 10.0 12.31 ug/L 123 59 -125 4 20 1,2-Dichloroethane 6.72 *3 F1 10.0 9.652 F1 ug/L 29 57 -149 7 27 Eurofins Pittsburgh Page 116 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-133991-D-7 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389531 cis-1,2-Dichloroethene 1000 E *3 10.0 52.92 E 4 ug/L -9510 64 -122 12 22 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD trans-1,2-Dichloroethene 26.1 *3 F1 10.0 10.94 F1 ug/L -152 62 -126 5 23 1,1-Dichloroethene ND *3 F2 10.0 10.96 F2 ug/L 78 49 -132 24 23 1,2-Dichloropropane ND *3 10.0 9.699 ug/L 97 65 -129 6 23 cis-1,3-Dichloropropene ND *3 10.0 9.847 ug/L 98 53 -140 14 26 trans-1,3-Dichloropropene ND *3 10.0 9.077 ug/L 91 57 -137 1 25 1,4-Dioxane ND *3 200 ND ug/L NC 10 -170 NC 35 Ethylbenzene ND *3 10.0 8.993 ug/L 90 66 -122 9 22 2-Hexanone ND *3 10.0 9.565 ug/L 96 38 -157 18 35 Isopropylbenzene ND *3 10.0 8.480 ug/L 85 54 -130 19 22 Methyl acetate ND *3 20.0 ND ug/L 67 10 -170 22 35 Methylcyclohexane ND *3 10.0 8.055 ug/L 81 60 -127 6 26 Methylene Chloride ND *3 10.0 10.51 ug/L 105 51 -137 14 35 4-Methyl-2-pentanone (MIBK)ND *3 10.0 10.26 ug/L 73 29 -167 7 35 Methyl tert-butyl ether ND *3 10.0 9.246 ug/L 92 36 -141 14 35 Styrene ND *3 10.0 9.239 ug/L 92 68 -127 19 22 1,1,2,2-Tetrachloroethane ND *3 10.0 10.76 ug/L 108 47 -147 26 35 Tetrachloroethene ND *3 10.0 8.417 ug/L 84 60 -129 7 22 Toluene ND *3 10.0 9.801 ug/L 98 67 -128 4 22 1,2,3-Trichlorobenzene ND *3 F1 10.0 5.283 ug/L 53 10 -170 NC 35 1,2,4-Trichlorobenzene ND *3 10.0 6.476 ug/L 65 15 -169 35 35 1,1,1-Trichloroethane ND *3 10.0 9.839 ug/L 98 64 -133 1 22 1,1,2-Trichloroethane ND *3 10.0 9.679 ug/L 97 59 -137 1 29 Trichloroethene ND *3 10.0 12.00 ug/L 120 67 -121 5 23 Trichlorofluoromethane ND *3 10.0 7.304 ug/L 73 32 -157 21 35 1,1,2-Trichlorotrifluoroethane ND *3 10.0 11.03 ug/L 110 48 -134 2 28 Vinyl chloride 483 E *3 10.0 29.38 4 ug/L -4534 47 -147 8 25 m-Xylene & p-Xylene ND *3 10.0 9.266 ug/L 93 61 -128 14 21 o-Xylene ND *3 10.0 9.355 ug/L 94 64 -120 16 23 1,2-Dibromoethane ND *3 10.0 9.512 ug/L 95 55 -146 6 30 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 98 MSD MSD Qualifier Limits%Recovery 101Toluene-d8 (Surr)53 -124 1004-Bromofluorobenzene (Surr)49 -118 93Dibromofluoromethane (Surr)60 -132 Client Sample ID: Method BlankLab Sample ID: MB 180-389659/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 RL MDL Acetone ND 20.0 ug/L 02/26/22 11:12 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/26/22 11:12 1Benzene ND 5.00 ug/L 02/26/22 11:12 1Chlorobromomethane ND 5.00 ug/L 02/26/22 11:12 1Dichlorobromomethane ND 5.00 ug/L 02/26/22 11:12 1Bromoform ND 5.00 ug/L 02/26/22 11:12 1Bromomethane Eurofins Pittsburgh Page 117 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389659/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 RL MDL 2-Butanone (MEK)ND 5.00 ug/L 02/26/22 11:12 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/26/22 11:12 1Carbon disulfide ND 5.00 ug/L 02/26/22 11:12 1Carbon tetrachloride ND 5.00 ug/L 02/26/22 11:12 1Chlorobenzene ND 5.00 ug/L 02/26/22 11:12 1Chlorodibromomethane ND 5.00 ug/L 02/26/22 11:12 1Chloroethane ND 5.00 ug/L 02/26/22 11:12 1Chloroform ND 5.00 ug/L 02/26/22 11:12 1Chloromethane ND 5.00 ug/L 02/26/22 11:12 1Cyclohexane ND 5.00 ug/L 02/26/22 11:12 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/26/22 11:12 11,2-Dichlorobenzene ND 5.00 ug/L 02/26/22 11:12 11,3-Dichlorobenzene ND 5.00 ug/L 02/26/22 11:12 11,4-Dichlorobenzene ND 5.00 ug/L 02/26/22 11:12 1Dichlorodifluoromethane ND 5.00 ug/L 02/26/22 11:12 11,1-Dichloroethane ND 5.00 ug/L 02/26/22 11:12 11,2-Dichloroethane ND 5.00 ug/L 02/26/22 11:12 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/26/22 11:12 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/26/22 11:12 11,1-Dichloroethene ND 5.00 ug/L 02/26/22 11:12 11,2-Dichloropropane ND 5.00 ug/L 02/26/22 11:12 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/26/22 11:12 1trans-1,3-Dichloropropene ND 1000 ug/L 02/26/22 11:12 11,4-Dioxane ND 5.00 ug/L 02/26/22 11:12 1Ethylbenzene ND 5.00 ug/L 02/26/22 11:12 12-Hexanone ND 5.00 ug/L 02/26/22 11:12 1Isopropylbenzene ND 25.0 ug/L 02/26/22 11:12 1Methyl acetate ND 5.00 ug/L 02/26/22 11:12 1Methylcyclohexane ND 5.00 ug/L 02/26/22 11:12 1Methylene Chloride ND 5.00 ug/L 02/26/22 11:12 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 02/26/22 11:12 1Methyl tert-butyl ether ND 5.00 ug/L 02/26/22 11:12 1Styrene ND 5.00 ug/L 02/26/22 11:12 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/26/22 11:12 1Tetrachloroethene ND 5.00 ug/L 02/26/22 11:12 1Toluene ND 5.00 ug/L 02/26/22 11:12 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/26/22 11:12 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/26/22 11:12 11,1,1-Trichloroethane ND 5.00 ug/L 02/26/22 11:12 11,1,2-Trichloroethane ND 5.00 ug/L 02/26/22 11:12 1Trichloroethene ND 5.00 ug/L 02/26/22 11:12 1Trichlorofluoromethane ND 5.00 ug/L 02/26/22 11:12 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/26/22 11:12 1Vinyl chloride ND 5.00 ug/L 02/26/22 11:12 1m-Xylene & p-Xylene ND 5.00 ug/L 02/26/22 11:12 1o-Xylene ND 5.00 ug/L 02/26/22 11:12 11,2-Dibromoethane Eurofins Pittsburgh Page 118 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389659/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 1,2-Dichloroethane-d4 (Surr)84 52 -151 02/26/22 11:12 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 104 02/26/22 11:12 1Toluene-d8 (Surr)53 -124 101 02/26/22 11:12 14-Bromofluorobenzene (Surr)49 -118 87 02/26/22 11:12 1Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389659/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 Acetone 10.0 8.410 J ug/L 84 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 10.0 10.96 ug/L 110 68 -122 Chlorobromomethane 10.0 10.38 ug/L 104 59 -133 Dichlorobromomethane 10.0 8.672 ug/L 87 63 -132 Bromoform 10.0 7.858 ug/L 79 31 -164 Bromomethane 10.0 10.98 ug/L 110 20 -170 2-Butanone (MEK)10.0 6.906 ug/L 69 35 -158 Carbon disulfide 10.0 11.05 ug/L 110 32 -139 Carbon tetrachloride 10.0 9.686 ug/L 97 60 -135 Chlorobenzene 10.0 8.718 ug/L 87 72 -123 Chlorodibromomethane 10.0 10.04 ug/L 100 51 -144 Chloroethane 10.0 11.76 ug/L 118 10 -170 Chloroform 10.0 9.960 ug/L 100 62 -121 Chloromethane 10.0 14.05 ug/L 140 37 -170 Cyclohexane 10.0 9.381 ug/L 94 50 -161 1,2-Dibromo-3-Chloropropane 10.0 12.06 ug/L 121 10 -170 1,2-Dichlorobenzene 10.0 9.707 ug/L 97 68 -116 1,3-Dichlorobenzene 10.0 9.380 ug/L 94 70 -119 1,4-Dichlorobenzene 10.0 9.359 ug/L 94 74 -117 Dichlorodifluoromethane 10.0 10.05 ug/L 100 21 -165 1,1-Dichloroethane 10.0 10.83 ug/L 108 59 -125 1,2-Dichloroethane 10.0 9.640 ug/L 96 57 -149 cis-1,2-Dichloroethene 10.0 10.89 ug/L 109 64 -122 trans-1,2-Dichloroethene 10.0 8.090 ug/L 81 62 -126 1,1-Dichloroethene 10.0 13.11 ug/L 131 49 -132 1,2-Dichloropropane 10.0 10.01 ug/L 100 65 -129 cis-1,3-Dichloropropene 10.0 10.32 ug/L 103 53 -140 trans-1,3-Dichloropropene 10.0 10.17 ug/L 102 57 -137 1,4-Dioxane 200 305.8 J ug/L 153 10 -170 Ethylbenzene 10.0 9.196 ug/L 92 66 -122 2-Hexanone 10.0 8.499 ug/L 85 38 -157 Isopropylbenzene 10.0 8.452 ug/L 85 54 -130 Methyl acetate 20.0 16.16 J ug/L 81 10 -170 Methylcyclohexane 10.0 9.117 ug/L 91 60 -127 Methylene Chloride 10.0 10.91 ug/L 109 51 -137 4-Methyl-2-pentanone (MIBK)10.0 8.958 ug/L 90 29 -167 Methyl tert-butyl ether 10.0 11.11 ug/L 111 36 -141 Styrene 10.0 9.141 ug/L 91 68 -127 Eurofins Pittsburgh Page 119 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389659/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 1,1,2,2-Tetrachloroethane 10.0 9.695 ug/L 97 47 -147 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Tetrachloroethene 10.0 8.724 ug/L 87 60 -129 Toluene 10.0 11.31 ug/L 113 67 -128 1,2,3-Trichlorobenzene 10.0 6.134 ug/L 61 10 -170 1,2,4-Trichlorobenzene 10.0 7.405 ug/L 74 15 -169 1,1,1-Trichloroethane 10.0 10.47 ug/L 105 64 -133 1,1,2-Trichloroethane 10.0 10.40 ug/L 104 59 -137 Trichloroethene 10.0 10.21 ug/L 102 67 -121 Trichlorofluoromethane 10.0 8.458 ug/L 85 32 -157 1,1,2-Trichlorotrifluoroethane 10.0 11.61 ug/L 116 48 -134 Vinyl chloride 10.0 10.88 ug/L 109 47 -147 m-Xylene & p-Xylene 10.0 9.298 ug/L 93 61 -128 o-Xylene 10.0 9.007 ug/L 90 64 -120 1,2-Dibromoethane 10.0 9.953 ug/L 100 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 81 LCS LCS Qualifier Limits%Recovery 101Toluene-d8 (Surr)53 -124 834-Bromofluorobenzene (Surr)49 -118 92Dibromofluoromethane (Surr)60 -132 Client Sample ID: MW-18ILab Sample ID: 180-133991-8 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 Acetone ND 10.0 ND ug/L 78 29 -163 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND F2 10.0 11.18 ug/L 112 68 -122 Chlorobromomethane ND F2 10.0 11.24 ug/L 112 59 -133 Dichlorobromomethane ND 10.0 9.341 ug/L 93 63 -132 Bromoform ND 10.0 8.469 ug/L 85 31 -164 Bromomethane ND 10.0 11.64 ug/L 116 20 -170 2-Butanone (MEK)ND 10.0 6.397 ug/L 64 35 -158 Carbon disulfide ND 10.0 11.14 ug/L 111 32 -139 Carbon tetrachloride ND 10.0 9.617 ug/L 96 60 -135 Chlorobenzene ND 10.0 8.983 ug/L 90 72 -123 Chlorodibromomethane ND F2 10.0 9.934 ug/L 99 51 -144 Chloroethane ND 10.0 13.23 ug/L 132 10 -170 Chloroform ND F2 10.0 10.28 ug/L 103 62 -121 Chloromethane ND 10.0 11.29 ug/L 113 37 -170 Cyclohexane ND 10.0 9.774 ug/L 98 50 -161 1,2-Dibromo-3-Chloropropane ND 10.0 11.69 ug/L 117 10 -170 1,2-Dichlorobenzene ND 10.0 9.244 ug/L 92 68 -116 1,3-Dichlorobenzene ND 10.0 8.724 ug/L 87 70 -119 1,4-Dichlorobenzene ND 10.0 8.970 ug/L 90 74 -117 Dichlorodifluoromethane ND 10.0 9.963 ug/L 100 21 -165 1,1-Dichloroethane 8.12 F1 F2 10.0 21.25 F1 ug/L 131 59 -125 1,2-Dichloroethane ND F2 10.0 11.14 ug/L 111 57 -149 Eurofins Pittsburgh Page 120 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-18ILab Sample ID: 180-133991-8 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 cis-1,2-Dichloroethene ND F2 F1 10.0 16.38 ug/L 120 64 -122 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits trans-1,2-Dichloroethene ND 10.0 12.12 ug/L 121 62 -126 1,1-Dichloroethene ND 10.0 15.61 ug/L 121 49 -132 1,2-Dichloropropane ND 10.0 11.22 ug/L 112 65 -129 cis-1,3-Dichloropropene ND 10.0 9.856 ug/L 99 53 -140 trans-1,3-Dichloropropene ND F2 10.0 10.40 ug/L 104 57 -137 1,4-Dioxane ND 200 ND ug/L NC 10 -170 Ethylbenzene ND 10.0 9.380 ug/L 94 66 -122 2-Hexanone ND 10.0 11.14 ug/L 111 38 -157 Isopropylbenzene ND 10.0 8.812 ug/L 88 54 -130 Methyl acetate ND F2 20.0 ND ug/L 96 10 -170 Methylcyclohexane ND 10.0 9.671 ug/L 97 60 -127 Methylene Chloride ND 10.0 11.58 ug/L 116 51 -137 4-Methyl-2-pentanone (MIBK)ND 10.0 10.26 ug/L 103 29 -167 Methyl tert-butyl ether ND F2 10.0 12.36 ug/L 124 36 -141 Styrene ND 10.0 9.618 ug/L 96 68 -127 1,1,2,2-Tetrachloroethane ND 10.0 10.75 ug/L 107 47 -147 Tetrachloroethene ND 10.0 8.427 ug/L 84 60 -129 Toluene ND 10.0 10.74 ug/L 107 67 -128 1,2,3-Trichlorobenzene ND 10.0 ND ug/L 46 10 -170 1,2,4-Trichlorobenzene ND 10.0 6.149 ug/L 61 15 -169 1,1,1-Trichloroethane ND F2 10.0 11.20 ug/L 112 64 -133 1,1,2-Trichloroethane ND 10.0 12.15 ug/L 122 59 -137 Trichloroethene ND 10.0 9.928 ug/L 99 67 -121 Trichlorofluoromethane ND 10.0 11.19 ug/L 112 32 -157 1,1,2-Trichlorotrifluoroethane ND 10.0 11.35 ug/L 114 48 -134 Vinyl chloride ND 10.0 13.35 ug/L 134 47 -147 m-Xylene & p-Xylene ND 10.0 9.204 ug/L 92 61 -128 o-Xylene ND 10.0 9.353 ug/L 94 64 -120 1,2-Dibromoethane ND 10.0 10.72 ug/L 107 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 98 MS MS Qualifier Limits%Recovery 101Toluene-d8 (Surr)53 -124 1004-Bromofluorobenzene (Surr)49 -118 101Dibromofluoromethane (Surr)60 -132 Client Sample ID: MW-18ILab Sample ID: 180-133991-8 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 Acetone ND 10.0 ND ug/L 93 29 -163 17 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND F2 10.0 8.030 F2 ug/L 80 68 -122 33 21 Chlorobromomethane ND F2 10.0 8.004 F2 ug/L 80 59 -133 34 26 Dichlorobromomethane ND 10.0 7.824 ug/L 78 63 -132 18 24 Bromoform ND 10.0 7.033 ug/L 70 31 -164 19 35 Bromomethane ND 10.0 10.75 ug/L 107 20 -170 8 30 Eurofins Pittsburgh Page 121 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-18ILab Sample ID: 180-133991-8 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 2-Butanone (MEK)ND 10.0 6.354 ug/L 64 35 -158 1 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Carbon disulfide ND 10.0 9.541 ug/L 95 32 -139 15 25 Carbon tetrachloride ND 10.0 7.668 ug/L 77 60 -135 23 25 Chlorobenzene ND 10.0 8.541 ug/L 85 72 -123 5 19 Chlorodibromomethane ND F2 10.0 7.367 F2 ug/L 74 51 -144 30 25 Chloroethane ND 10.0 10.56 ug/L 106 10 -170 22 29 Chloroform ND F2 10.0 6.912 F2 ug/L 69 62 -121 39 22 Chloromethane ND 10.0 10.34 ug/L 103 37 -170 9 28 Cyclohexane ND 10.0 7.530 ug/L 75 50 -161 26 28 1,2-Dibromo-3-Chloropropane ND 10.0 12.99 ug/L 130 10 -170 11 35 1,2-Dichlorobenzene ND 10.0 9.134 ug/L 91 68 -116 1 20 1,3-Dichlorobenzene ND 10.0 8.941 ug/L 89 70 -119 2 18 1,4-Dichlorobenzene ND 10.0 8.793 ug/L 88 74 -117 2 17 Dichlorodifluoromethane ND 10.0 7.988 ug/L 80 21 -165 22 26 1,1-Dichloroethane 8.12 F1 F2 10.0 13.27 F1 F2 ug/L 51 59 -125 46 20 1,2-Dichloroethane ND F2 10.0 7.324 F2 ug/L 73 57 -149 41 27 cis-1,2-Dichloroethene ND F2 F1 10.0 10.59 F1 F2 ug/L 62 64 -122 43 22 trans-1,2-Dichloroethene ND 10.0 9.667 ug/L 97 62 -126 23 23 1,1-Dichloroethene ND 10.0 14.93 ug/L 114 49 -132 4 23 1,2-Dichloropropane ND 10.0 9.439 ug/L 94 65 -129 17 23 cis-1,3-Dichloropropene ND 10.0 8.619 ug/L 86 53 -140 13 26 trans-1,3-Dichloropropene ND F2 10.0 7.399 F2 ug/L 74 57 -137 34 25 1,4-Dioxane ND 200 ND ug/L NC 10 -170 NC 35 Ethylbenzene ND 10.0 9.431 ug/L 94 66 -122 1 22 2-Hexanone ND 10.0 8.944 ug/L 89 38 -157 22 35 Isopropylbenzene ND 10.0 9.376 ug/L 94 54 -130 6 22 Methyl acetate ND F2 20.0 ND F2 ug/L 53 10 -170 57 35 Methylcyclohexane ND 10.0 9.058 ug/L 91 60 -127 7 26 Methylene Chloride ND 10.0 10.65 ug/L 106 51 -137 8 35 4-Methyl-2-pentanone (MIBK)ND 10.0 8.326 ug/L 83 29 -167 21 35 Methyl tert-butyl ether ND F2 10.0 7.428 F2 ug/L 74 36 -141 50 35 Styrene ND 10.0 9.796 ug/L 98 68 -127 2 22 1,1,2,2-Tetrachloroethane ND 10.0 10.07 ug/L 101 47 -147 7 35 Tetrachloroethene ND 10.0 8.807 ug/L 88 60 -129 4 22 Toluene ND 10.0 9.644 ug/L 96 67 -128 11 22 1,2,3-Trichlorobenzene ND 10.0 5.814 ug/L 58 10 -170 22 35 1,2,4-Trichlorobenzene ND 10.0 6.944 ug/L 69 15 -169 12 35 1,1,1-Trichloroethane ND F2 10.0 8.506 F2 ug/L 85 64 -133 27 22 1,1,2-Trichloroethane ND 10.0 9.218 ug/L 92 59 -137 27 29 Trichloroethene ND 10.0 7.985 ug/L 80 67 -121 22 23 Trichlorofluoromethane ND 10.0 9.301 ug/L 93 32 -157 18 35 1,1,2-Trichlorotrifluoroethane ND 10.0 10.53 ug/L 105 48 -134 8 28 Vinyl chloride ND 10.0 11.12 ug/L 111 47 -147 18 25 m-Xylene & p-Xylene ND 10.0 9.740 ug/L 97 61 -128 6 21 o-Xylene ND 10.0 9.719 ug/L 97 64 -120 4 23 1,2-Dibromoethane ND 10.0 8.858 ug/L 89 55 -146 19 30 Eurofins Pittsburgh Page 122 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-18ILab Sample ID: 180-133991-8 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 62 MSD MSD Qualifier Limits%Recovery 95Toluene-d8 (Surr)53 -124 964-Bromofluorobenzene (Surr)49 -118 68Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix SpikeLab Sample ID: 180-133991-D-8 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 Acetone ND 10.0 ND ug/L 78 29 -163 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND F2 10.0 11.18 ug/L 112 68 -122 Chlorobromomethane ND F2 10.0 11.24 ug/L 112 59 -133 Dichlorobromomethane ND 10.0 9.341 ug/L 93 63 -132 Bromoform ND 10.0 8.469 ug/L 85 31 -164 Bromomethane ND 10.0 11.64 ug/L 116 20 -170 2-Butanone (MEK)ND 10.0 6.397 ug/L 64 35 -158 Carbon disulfide ND 10.0 11.14 ug/L 111 32 -139 Carbon tetrachloride ND 10.0 9.617 ug/L 96 60 -135 Chlorobenzene ND 10.0 8.983 ug/L 90 72 -123 Chlorodibromomethane ND F2 10.0 9.934 ug/L 99 51 -144 Chloroethane ND 10.0 13.23 ug/L 132 10 -170 Chloroform ND F2 10.0 10.28 ug/L 103 62 -121 Chloromethane ND 10.0 11.29 ug/L 113 37 -170 Cyclohexane ND 10.0 9.774 ug/L 98 50 -161 1,2-Dibromo-3-Chloropropane ND 10.0 11.69 ug/L 117 10 -170 1,2-Dichlorobenzene ND 10.0 9.244 ug/L 92 68 -116 1,3-Dichlorobenzene ND 10.0 8.724 ug/L 87 70 -119 1,4-Dichlorobenzene ND 10.0 8.970 ug/L 90 74 -117 Dichlorodifluoromethane ND 10.0 9.963 ug/L 100 21 -165 1,1-Dichloroethane 8.12 F1 F2 10.0 21.25 F1 ug/L 131 59 -125 1,2-Dichloroethane ND F2 10.0 11.14 ug/L 111 57 -149 cis-1,2-Dichloroethene ND F2 F1 10.0 16.38 ug/L 120 64 -122 trans-1,2-Dichloroethene ND 10.0 12.12 ug/L 121 62 -126 1,1-Dichloroethene ND 10.0 15.61 ug/L 121 49 -132 1,2-Dichloropropane ND 10.0 11.22 ug/L 112 65 -129 cis-1,3-Dichloropropene ND 10.0 9.856 ug/L 99 53 -140 trans-1,3-Dichloropropene ND F2 10.0 10.40 ug/L 104 57 -137 1,4-Dioxane ND 200 ND ug/L NC 10 -170 Ethylbenzene ND 10.0 9.380 ug/L 94 66 -122 2-Hexanone ND 10.0 11.14 ug/L 111 38 -157 Isopropylbenzene ND 10.0 8.812 ug/L 88 54 -130 Methyl acetate ND F2 20.0 ND ug/L 96 10 -170 Methylcyclohexane ND 10.0 9.671 ug/L 97 60 -127 Methylene Chloride ND 10.0 11.58 ug/L 116 51 -137 4-Methyl-2-pentanone (MIBK)ND 10.0 10.26 ug/L 103 29 -167 Methyl tert-butyl ether ND F2 10.0 12.36 ug/L 124 36 -141 Styrene ND 10.0 9.618 ug/L 96 68 -127 Eurofins Pittsburgh Page 123 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 180-133991-D-8 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 1,1,2,2-Tetrachloroethane ND 10.0 10.75 ug/L 107 47 -147 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Tetrachloroethene ND 10.0 8.427 ug/L 84 60 -129 Toluene ND 10.0 10.74 ug/L 107 67 -128 1,2,3-Trichlorobenzene ND 10.0 ND ug/L 46 10 -170 1,2,4-Trichlorobenzene ND 10.0 6.149 ug/L 61 15 -169 1,1,1-Trichloroethane ND F2 10.0 11.20 ug/L 112 64 -133 1,1,2-Trichloroethane ND 10.0 12.15 ug/L 122 59 -137 Trichloroethene ND 10.0 9.928 ug/L 99 67 -121 Trichlorofluoromethane ND 10.0 11.19 ug/L 112 32 -157 1,1,2-Trichlorotrifluoroethane ND 10.0 11.35 ug/L 114 48 -134 Vinyl chloride ND 10.0 13.35 ug/L 134 47 -147 m-Xylene & p-Xylene ND 10.0 9.204 ug/L 92 61 -128 o-Xylene ND 10.0 9.353 ug/L 94 64 -120 1,2-Dibromoethane ND 10.0 10.72 ug/L 107 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 98 MS MS Qualifier Limits%Recovery 101Toluene-d8 (Surr)53 -124 1004-Bromofluorobenzene (Surr)49 -118 101Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-133991-E-8 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 Acetone ND 10.0 ND ug/L 93 29 -163 17 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND F2 10.0 8.030 F2 ug/L 80 68 -122 33 21 Chlorobromomethane ND F2 10.0 8.004 F2 ug/L 80 59 -133 34 26 Dichlorobromomethane ND 10.0 7.824 ug/L 78 63 -132 18 24 Bromoform ND 10.0 7.033 ug/L 70 31 -164 19 35 Bromomethane ND 10.0 10.75 ug/L 107 20 -170 8 30 2-Butanone (MEK)ND 10.0 6.354 ug/L 64 35 -158 1 35 Carbon disulfide ND 10.0 9.541 ug/L 95 32 -139 15 25 Carbon tetrachloride ND 10.0 7.668 ug/L 77 60 -135 23 25 Chlorobenzene ND 10.0 8.541 ug/L 85 72 -123 5 19 Chlorodibromomethane ND F2 10.0 7.367 F2 ug/L 74 51 -144 30 25 Chloroethane ND 10.0 10.56 ug/L 106 10 -170 22 29 Chloroform ND F2 10.0 6.912 F2 ug/L 69 62 -121 39 22 Chloromethane ND 10.0 10.34 ug/L 103 37 -170 9 28 Cyclohexane ND 10.0 7.530 ug/L 75 50 -161 26 28 1,2-Dibromo-3-Chloropropane ND 10.0 12.99 ug/L 130 10 -170 11 35 1,2-Dichlorobenzene ND 10.0 9.134 ug/L 91 68 -116 1 20 1,3-Dichlorobenzene ND 10.0 8.941 ug/L 89 70 -119 2 18 1,4-Dichlorobenzene ND 10.0 8.793 ug/L 88 74 -117 2 17 Dichlorodifluoromethane ND 10.0 7.988 ug/L 80 21 -165 22 26 1,1-Dichloroethane 8.12 F1 F2 10.0 13.27 F1 F2 ug/L 51 59 -125 46 20 1,2-Dichloroethane ND F2 10.0 7.324 F2 ug/L 73 57 -149 41 27 Eurofins Pittsburgh Page 124 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-133991-E-8 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389659 cis-1,2-Dichloroethene ND F2 F1 10.0 10.59 F1 F2 ug/L 62 64 -122 43 22 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD trans-1,2-Dichloroethene ND 10.0 9.667 ug/L 97 62 -126 23 23 1,1-Dichloroethene ND 10.0 14.93 ug/L 114 49 -132 4 23 1,2-Dichloropropane ND 10.0 9.439 ug/L 94 65 -129 17 23 cis-1,3-Dichloropropene ND 10.0 8.619 ug/L 86 53 -140 13 26 trans-1,3-Dichloropropene ND F2 10.0 7.399 F2 ug/L 74 57 -137 34 25 1,4-Dioxane ND 200 ND ug/L NC 10 -170 NC 35 Ethylbenzene ND 10.0 9.431 ug/L 94 66 -122 1 22 2-Hexanone ND 10.0 8.944 ug/L 89 38 -157 22 35 Isopropylbenzene ND 10.0 9.376 ug/L 94 54 -130 6 22 Methyl acetate ND F2 20.0 ND F2 ug/L 53 10 -170 57 35 Methylcyclohexane ND 10.0 9.058 ug/L 91 60 -127 7 26 Methylene Chloride ND 10.0 10.65 ug/L 106 51 -137 8 35 4-Methyl-2-pentanone (MIBK)ND 10.0 8.326 ug/L 83 29 -167 21 35 Methyl tert-butyl ether ND F2 10.0 7.428 F2 ug/L 74 36 -141 50 35 Styrene ND 10.0 9.796 ug/L 98 68 -127 2 22 1,1,2,2-Tetrachloroethane ND 10.0 10.07 ug/L 101 47 -147 7 35 Tetrachloroethene ND 10.0 8.807 ug/L 88 60 -129 4 22 Toluene ND 10.0 9.644 ug/L 96 67 -128 11 22 1,2,3-Trichlorobenzene ND 10.0 5.814 ug/L 58 10 -170 22 35 1,2,4-Trichlorobenzene ND 10.0 6.944 ug/L 69 15 -169 12 35 1,1,1-Trichloroethane ND F2 10.0 8.506 F2 ug/L 85 64 -133 27 22 1,1,2-Trichloroethane ND 10.0 9.218 ug/L 92 59 -137 27 29 Trichloroethene ND 10.0 7.985 ug/L 80 67 -121 22 23 Trichlorofluoromethane ND 10.0 9.301 ug/L 93 32 -157 18 35 1,1,2-Trichlorotrifluoroethane ND 10.0 10.53 ug/L 105 48 -134 8 28 Vinyl chloride ND 10.0 11.12 ug/L 111 47 -147 18 25 m-Xylene & p-Xylene ND 10.0 9.740 ug/L 97 61 -128 6 21 o-Xylene ND 10.0 9.719 ug/L 97 64 -120 4 23 1,2-Dibromoethane ND 10.0 8.858 ug/L 89 55 -146 19 30 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 62 MSD MSD Qualifier Limits%Recovery 95Toluene-d8 (Surr)53 -124 964-Bromofluorobenzene (Surr)49 -118 68Dibromofluoromethane (Surr)60 -132 Client Sample ID: Method BlankLab Sample ID: MB 180-389738/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 RL MDL Acetone ND 20.0 ug/L 02/28/22 11:47 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/28/22 11:47 1Benzene ND 5.00 ug/L 02/28/22 11:47 1Chlorobromomethane ND 5.00 ug/L 02/28/22 11:47 1Dichlorobromomethane ND 5.00 ug/L 02/28/22 11:47 1Bromoform ND 5.00 ug/L 02/28/22 11:47 1Bromomethane Eurofins Pittsburgh Page 125 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389738/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 RL MDL 2-Butanone (MEK)ND 5.00 ug/L 02/28/22 11:47 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 02/28/22 11:47 1Carbon disulfide ND 5.00 ug/L 02/28/22 11:47 1Carbon tetrachloride ND 5.00 ug/L 02/28/22 11:47 1Chlorobenzene ND 5.00 ug/L 02/28/22 11:47 1Chlorodibromomethane ND 5.00 ug/L 02/28/22 11:47 1Chloroethane ND 5.00 ug/L 02/28/22 11:47 1Chloroform ND 5.00 ug/L 02/28/22 11:47 1Chloromethane ND 5.00 ug/L 02/28/22 11:47 1Cyclohexane ND 5.00 ug/L 02/28/22 11:47 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 02/28/22 11:47 11,2-Dichlorobenzene ND 5.00 ug/L 02/28/22 11:47 11,3-Dichlorobenzene ND 5.00 ug/L 02/28/22 11:47 11,4-Dichlorobenzene ND 5.00 ug/L 02/28/22 11:47 1Dichlorodifluoromethane ND 5.00 ug/L 02/28/22 11:47 11,1-Dichloroethane ND 5.00 ug/L 02/28/22 11:47 11,2-Dichloroethane ND 5.00 ug/L 02/28/22 11:47 1cis-1,2-Dichloroethene ND 5.00 ug/L 02/28/22 11:47 1trans-1,2-Dichloroethene ND 5.00 ug/L 02/28/22 11:47 11,1-Dichloroethene ND 5.00 ug/L 02/28/22 11:47 11,2-Dichloropropane ND 5.00 ug/L 02/28/22 11:47 1cis-1,3-Dichloropropene ND 5.00 ug/L 02/28/22 11:47 1trans-1,3-Dichloropropene ND 1000 ug/L 02/28/22 11:47 11,4-Dioxane ND 5.00 ug/L 02/28/22 11:47 1Ethylbenzene ND 5.00 ug/L 02/28/22 11:47 12-Hexanone ND 5.00 ug/L 02/28/22 11:47 1Isopropylbenzene ND 25.0 ug/L 02/28/22 11:47 1Methyl acetate ND 5.00 ug/L 02/28/22 11:47 1Methylcyclohexane ND 5.00 ug/L 02/28/22 11:47 1Methylene Chloride ND 5.00 ug/L 02/28/22 11:47 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 02/28/22 11:47 1Methyl tert-butyl ether ND 5.00 ug/L 02/28/22 11:47 1Styrene ND 5.00 ug/L 02/28/22 11:47 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 02/28/22 11:47 1Tetrachloroethene ND 5.00 ug/L 02/28/22 11:47 1Toluene ND 5.00 ug/L 02/28/22 11:47 11,2,3-Trichlorobenzene ND 5.00 ug/L 02/28/22 11:47 11,2,4-Trichlorobenzene ND 5.00 ug/L 02/28/22 11:47 11,1,1-Trichloroethane ND 5.00 ug/L 02/28/22 11:47 11,1,2-Trichloroethane ND 5.00 ug/L 02/28/22 11:47 1Trichloroethene ND 5.00 ug/L 02/28/22 11:47 1Trichlorofluoromethane ND 5.00 ug/L 02/28/22 11:47 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 02/28/22 11:47 1Vinyl chloride ND 5.00 ug/L 02/28/22 11:47 1m-Xylene & p-Xylene ND 5.00 ug/L 02/28/22 11:47 1o-Xylene ND 5.00 ug/L 02/28/22 11:47 11,2-Dibromoethane Eurofins Pittsburgh Page 126 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389738/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 1,2-Dichloroethane-d4 (Surr)89 52 -151 02/28/22 11:47 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 97 02/28/22 11:47 1Toluene-d8 (Surr)53 -124 100 02/28/22 11:47 14-Bromofluorobenzene (Surr)49 -118 94 02/28/22 11:47 1Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389738/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 Acetone 10.0 7.912 J ug/L 79 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 10.0 10.23 ug/L 102 68 -122 Chlorobromomethane 10.0 9.821 ug/L 98 59 -133 Dichlorobromomethane 10.0 8.881 ug/L 89 63 -132 Bromoform 10.0 7.930 ug/L 79 31 -164 Bromomethane 10.0 10.46 ug/L 105 20 -170 2-Butanone (MEK)10.0 5.528 ug/L 55 35 -158 Carbon disulfide 10.0 11.41 ug/L 114 32 -139 Carbon tetrachloride 10.0 9.796 ug/L 98 60 -135 Chlorobenzene 10.0 8.374 ug/L 84 72 -123 Chlorodibromomethane 10.0 9.095 ug/L 91 51 -144 Chloroethane 10.0 11.16 ug/L 112 10 -170 Chloroform 10.0 9.906 ug/L 99 62 -121 Chloromethane 10.0 9.250 ug/L 92 37 -170 Cyclohexane 10.0 9.049 ug/L 90 50 -161 1,2-Dibromo-3-Chloropropane 10.0 11.56 ug/L 116 10 -170 1,2-Dichlorobenzene 10.0 8.766 ug/L 88 68 -116 1,3-Dichlorobenzene 10.0 8.450 ug/L 85 70 -119 1,4-Dichlorobenzene 10.0 8.565 ug/L 86 74 -117 Dichlorodifluoromethane 10.0 6.770 ug/L 68 21 -165 1,1-Dichloroethane 10.0 10.55 ug/L 106 59 -125 1,2-Dichloroethane 10.0 9.624 ug/L 96 57 -149 cis-1,2-Dichloroethene 10.0 11.02 ug/L 110 64 -122 trans-1,2-Dichloroethene 10.0 11.13 ug/L 111 62 -126 1,1-Dichloroethene 10.0 10.00 ug/L 100 49 -132 1,2-Dichloropropane 10.0 10.77 ug/L 108 65 -129 cis-1,3-Dichloropropene 10.0 9.623 ug/L 96 53 -140 trans-1,3-Dichloropropene 10.0 9.262 ug/L 93 57 -137 1,4-Dioxane 200 351.0 J *+ ug/L 175 10 -170 Ethylbenzene 10.0 9.029 ug/L 90 66 -122 2-Hexanone 10.0 9.249 ug/L 92 38 -157 Isopropylbenzene 10.0 8.761 ug/L 88 54 -130 Methyl acetate 20.0 13.93 J ug/L 70 10 -170 Methylcyclohexane 10.0 8.952 ug/L 90 60 -127 Methylene Chloride 10.0 11.88 ug/L 119 51 -137 4-Methyl-2-pentanone (MIBK)10.0 8.888 ug/L 89 29 -167 Methyl tert-butyl ether 10.0 11.48 ug/L 115 36 -141 Styrene 10.0 9.280 ug/L 93 68 -127 Eurofins Pittsburgh Page 127 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389738/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 1,1,2,2-Tetrachloroethane 10.0 10.06 ug/L 101 47 -147 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Tetrachloroethene 10.0 8.520 ug/L 85 60 -129 Toluene 10.0 9.958 ug/L 100 67 -128 1,2,3-Trichlorobenzene 10.0 6.880 ug/L 69 10 -170 1,2,4-Trichlorobenzene 10.0 7.717 ug/L 77 15 -169 1,1,1-Trichloroethane 10.0 10.27 ug/L 103 64 -133 1,1,2-Trichloroethane 10.0 9.299 ug/L 93 59 -137 Trichloroethene 10.0 9.649 ug/L 96 67 -121 Trichlorofluoromethane 10.0 10.74 ug/L 107 32 -157 1,1,2-Trichlorotrifluoroethane 10.0 10.98 ug/L 110 48 -134 Vinyl chloride 10.0 9.827 ug/L 98 47 -147 m-Xylene & p-Xylene 10.0 9.020 ug/L 90 61 -128 o-Xylene 10.0 9.084 ug/L 91 64 -120 1,2-Dibromoethane 10.0 9.092 ug/L 91 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 87 LCS LCS Qualifier Limits%Recovery 102Toluene-d8 (Surr)53 -124 1034-Bromofluorobenzene (Surr)49 -118 103Dibromofluoromethane (Surr)60 -132 Client Sample ID: MW-15ILab Sample ID: 180-133991-7 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 Acetone ND F2 10.0 ND ug/L 75 29 -163 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 10.0 10.19 ug/L 102 68 -122 Chlorobromomethane ND 10.0 10.32 ug/L 103 59 -133 Dichlorobromomethane ND 10.0 7.947 ug/L 79 63 -132 Bromoform ND 10.0 6.822 ug/L 68 31 -164 Bromomethane ND 10.0 10.37 ug/L 104 20 -170 2-Butanone (MEK)ND 10.0 8.883 ug/L 89 35 -158 Carbon disulfide ND 10.0 8.275 ug/L 83 32 -139 Carbon tetrachloride ND 10.0 7.654 ug/L 77 60 -135 Chlorobenzene ND 10.0 7.784 ug/L 78 72 -123 Chlorodibromomethane ND 10.0 8.536 ug/L 85 51 -144 Chloroethane ND 10.0 10.90 ug/L 109 10 -170 Chloroform ND 10.0 9.591 ug/L 96 62 -121 Chloromethane ND 10.0 8.398 ug/L 84 37 -170 Cyclohexane ND 10.0 6.230 ug/L 62 50 -161 1,2-Dibromo-3-Chloropropane ND 10.0 8.932 ug/L 89 10 -170 1,2-Dichlorobenzene ND 10.0 8.136 ug/L 81 68 -116 1,3-Dichlorobenzene ND 10.0 7.563 ug/L 76 70 -119 1,4-Dichlorobenzene ND 10.0 7.970 ug/L 80 74 -117 Dichlorodifluoromethane ND 10.0 ND ug/L 41 21 -165 1,1-Dichloroethane ND F1 10.0 12.74 F1 ug/L 127 59 -125 1,2-Dichloroethane ND 10.0 10.37 ug/L 104 57 -149 Eurofins Pittsburgh Page 128 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-15ILab Sample ID: 180-133991-7 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 cis-1,2-Dichloroethene 36.3 F1 10.0 50.11 E F1 ug/L 138 64 -122 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits trans-1,2-Dichloroethene ND 10.0 11.48 ug/L 115 62 -126 1,1-Dichloroethene ND 10.0 11.73 ug/L 117 49 -132 1,2-Dichloropropane ND 10.0 9.651 ug/L 97 65 -129 cis-1,3-Dichloropropene ND 10.0 8.588 ug/L 86 53 -140 trans-1,3-Dichloropropene ND 10.0 8.775 ug/L 88 57 -137 1,4-Dioxane ND *+200 ND ug/L NC 10 -170 Ethylbenzene ND 10.0 7.841 ug/L 78 66 -122 2-Hexanone ND 10.0 7.742 ug/L 77 38 -157 Isopropylbenzene ND 10.0 6.661 ug/L 67 54 -130 Methyl acetate ND 20.0 ND ug/L 76 10 -170 Methylcyclohexane ND 10.0 6.279 ug/L 63 60 -127 Methylene Chloride ND 10.0 12.60 ug/L 126 51 -137 4-Methyl-2-pentanone (MIBK)ND 10.0 8.443 ug/L 84 29 -167 Methyl tert-butyl ether ND 10.0 12.16 ug/L 122 36 -141 Styrene ND 10.0 8.063 ug/L 81 68 -127 1,1,2,2-Tetrachloroethane ND 10.0 8.860 ug/L 89 47 -147 Tetrachloroethene ND 10.0 7.761 ug/L 78 60 -129 Toluene ND 10.0 9.378 ug/L 94 67 -128 1,2,3-Trichlorobenzene ND F2 10.0 ND ug/L 40 10 -170 1,2,4-Trichlorobenzene ND 10.0 ND ug/L 50 15 -169 1,1,1-Trichloroethane ND 10.0 9.675 ug/L 97 64 -133 1,1,2-Trichloroethane ND 10.0 9.451 ug/L 95 59 -137 Trichloroethene ND 10.0 13.17 ug/L 113 67 -121 Trichlorofluoromethane ND 10.0 7.714 ug/L 77 32 -157 1,1,2-Trichlorotrifluoroethane ND 10.0 8.419 ug/L 84 48 -134 Vinyl chloride 12.6 F1 10.0 15.25 F1 ug/L 27 47 -147 m-Xylene & p-Xylene ND 10.0 7.897 ug/L 79 61 -128 o-Xylene ND 10.0 8.089 ug/L 81 64 -120 1,2-Dibromoethane ND 10.0 8.714 ug/L 87 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 95 MS MS Qualifier Limits%Recovery 104Toluene-d8 (Surr)53 -124 994-Bromofluorobenzene (Surr)49 -118 109Dibromofluoromethane (Surr)60 -132 Client Sample ID: MW-15ILab Sample ID: 180-133991-7 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 Acetone ND F2 10.0 ND F2 ug/L 115 29 -163 42 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 10.0 10.87 ug/L 109 68 -122 6 21 Chlorobromomethane ND 10.0 9.923 ug/L 99 59 -133 4 26 Dichlorobromomethane ND 10.0 9.496 ug/L 95 63 -132 18 24 Bromoform ND 10.0 7.719 ug/L 77 31 -164 12 35 Bromomethane ND 10.0 10.14 ug/L 101 20 -170 2 30 Eurofins Pittsburgh Page 129 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-15ILab Sample ID: 180-133991-7 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 2-Butanone (MEK)ND 10.0 8.008 ug/L 80 35 -158 10 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Carbon disulfide ND 10.0 8.665 ug/L 87 32 -139 5 25 Carbon tetrachloride ND 10.0 7.136 ug/L 71 60 -135 7 25 Chlorobenzene ND 10.0 8.660 ug/L 87 72 -123 11 19 Chlorodibromomethane ND 10.0 9.118 ug/L 91 51 -144 7 25 Chloroethane ND 10.0 10.45 ug/L 104 10 -170 4 29 Chloroform ND 10.0 9.564 ug/L 96 62 -121 0 22 Chloromethane ND 10.0 8.091 ug/L 81 37 -170 4 28 Cyclohexane ND 10.0 6.376 ug/L 64 50 -161 2 28 1,2-Dibromo-3-Chloropropane ND 10.0 9.998 ug/L 100 10 -170 11 35 1,2-Dichlorobenzene ND 10.0 9.392 ug/L 94 68 -116 14 20 1,3-Dichlorobenzene ND 10.0 9.065 ug/L 91 70 -119 18 18 1,4-Dichlorobenzene ND 10.0 9.184 ug/L 92 74 -117 14 17 Dichlorodifluoromethane ND 10.0 ND ug/L 38 21 -165 9 26 1,1-Dichloroethane ND F1 10.0 11.11 ug/L 111 59 -125 14 20 1,2-Dichloroethane ND 10.0 11.41 ug/L 114 57 -149 10 27 cis-1,2-Dichloroethene 36.3 F1 10.0 44.49 ug/L 81 64 -122 12 22 trans-1,2-Dichloroethene ND 10.0 10.30 ug/L 103 62 -126 11 23 1,1-Dichloroethene ND 10.0 10.56 ug/L 106 49 -132 11 23 1,2-Dichloropropane ND 10.0 11.22 ug/L 112 65 -129 15 23 cis-1,3-Dichloropropene ND 10.0 10.49 ug/L 105 53 -140 20 26 trans-1,3-Dichloropropene ND 10.0 9.058 ug/L 91 57 -137 3 25 1,4-Dioxane ND *+200 ND ug/L NC 10 -170 NC 35 Ethylbenzene ND 10.0 9.072 ug/L 91 66 -122 15 22 2-Hexanone ND 10.0 8.939 ug/L 89 38 -157 14 35 Isopropylbenzene ND 10.0 8.180 ug/L 82 54 -130 20 22 Methyl acetate ND 20.0 ND ug/L 81 10 -170 6 35 Methylcyclohexane ND 10.0 5.990 ug/L 60 60 -127 5 26 Methylene Chloride ND 10.0 12.13 ug/L 121 51 -137 4 35 4-Methyl-2-pentanone (MIBK)ND 10.0 9.803 ug/L 98 29 -167 15 35 Methyl tert-butyl ether ND 10.0 11.37 ug/L 114 36 -141 7 35 Styrene ND 10.0 9.638 ug/L 96 68 -127 18 22 1,1,2,2-Tetrachloroethane ND 10.0 10.23 ug/L 102 47 -147 14 35 Tetrachloroethene ND 10.0 7.629 ug/L 76 60 -129 2 22 Toluene ND 10.0 9.329 ug/L 93 67 -128 1 22 1,2,3-Trichlorobenzene ND F2 10.0 5.762 F2 ug/L 58 10 -170 36 35 1,2,4-Trichlorobenzene ND 10.0 6.354 ug/L 64 15 -169 24 35 1,1,1-Trichloroethane ND 10.0 8.380 ug/L 84 64 -133 14 22 1,1,2-Trichloroethane ND 10.0 9.663 ug/L 97 59 -137 2 29 Trichloroethene ND 10.0 11.16 ug/L 93 67 -121 16 23 Trichlorofluoromethane ND 10.0 7.014 ug/L 70 32 -157 9 35 1,1,2-Trichlorotrifluoroethane ND 10.0 8.000 ug/L 80 48 -134 5 28 Vinyl chloride 12.6 F1 10.0 12.33 F1 ug/L -2 47 -147 21 25 m-Xylene & p-Xylene ND 10.0 9.353 ug/L 94 61 -128 17 21 o-Xylene ND 10.0 9.671 ug/L 97 64 -120 18 23 1,2-Dibromoethane ND 10.0 9.497 ug/L 95 55 -146 9 30 Eurofins Pittsburgh Page 130 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-15ILab Sample ID: 180-133991-7 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 104 MSD MSD Qualifier Limits%Recovery 98Toluene-d8 (Surr)53 -124 1044-Bromofluorobenzene (Surr)49 -118 95Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix SpikeLab Sample ID: 180-133991-D-7 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 Acetone ND F2 10.0 ND ug/L 75 29 -163 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 10.0 10.19 ug/L 102 68 -122 Chlorobromomethane ND 10.0 10.32 ug/L 103 59 -133 Dichlorobromomethane ND 10.0 7.947 ug/L 79 63 -132 Bromoform ND 10.0 6.822 ug/L 68 31 -164 Bromomethane ND 10.0 10.37 ug/L 104 20 -170 2-Butanone (MEK)ND 10.0 8.883 ug/L 89 35 -158 Carbon disulfide ND 10.0 8.275 ug/L 83 32 -139 Carbon tetrachloride ND 10.0 7.654 ug/L 77 60 -135 Chlorobenzene ND 10.0 7.784 ug/L 78 72 -123 Chlorodibromomethane ND 10.0 8.536 ug/L 85 51 -144 Chloroethane ND 10.0 10.90 ug/L 109 10 -170 Chloroform ND 10.0 9.591 ug/L 96 62 -121 Chloromethane ND 10.0 8.398 ug/L 84 37 -170 Cyclohexane ND 10.0 6.230 ug/L 62 50 -161 1,2-Dibromo-3-Chloropropane ND 10.0 8.932 ug/L 89 10 -170 1,2-Dichlorobenzene ND 10.0 8.136 ug/L 81 68 -116 1,3-Dichlorobenzene ND 10.0 7.563 ug/L 76 70 -119 1,4-Dichlorobenzene ND 10.0 7.970 ug/L 80 74 -117 Dichlorodifluoromethane ND 10.0 ND ug/L 41 21 -165 1,1-Dichloroethane ND F1 10.0 12.74 F1 ug/L 127 59 -125 1,2-Dichloroethane ND 10.0 10.37 ug/L 104 57 -149 cis-1,2-Dichloroethene 36.3 F1 10.0 50.11 E F1 ug/L 138 64 -122 trans-1,2-Dichloroethene ND 10.0 11.48 ug/L 115 62 -126 1,1-Dichloroethene ND 10.0 11.73 ug/L 117 49 -132 1,2-Dichloropropane ND 10.0 9.651 ug/L 97 65 -129 cis-1,3-Dichloropropene ND 10.0 8.588 ug/L 86 53 -140 trans-1,3-Dichloropropene ND 10.0 8.775 ug/L 88 57 -137 1,4-Dioxane ND *+200 ND ug/L NC 10 -170 Ethylbenzene ND 10.0 7.841 ug/L 78 66 -122 2-Hexanone ND 10.0 7.742 ug/L 77 38 -157 Isopropylbenzene ND 10.0 6.661 ug/L 67 54 -130 Methyl acetate ND 20.0 ND ug/L 76 10 -170 Methylcyclohexane ND 10.0 6.279 ug/L 63 60 -127 Methylene Chloride ND 10.0 12.60 ug/L 126 51 -137 4-Methyl-2-pentanone (MIBK)ND 10.0 8.443 ug/L 84 29 -167 Methyl tert-butyl ether ND 10.0 12.16 ug/L 122 36 -141 Styrene ND 10.0 8.063 ug/L 81 68 -127 Eurofins Pittsburgh Page 131 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 180-133991-D-7 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 1,1,2,2-Tetrachloroethane ND 10.0 8.860 ug/L 89 47 -147 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Tetrachloroethene ND 10.0 7.761 ug/L 78 60 -129 Toluene ND 10.0 9.378 ug/L 94 67 -128 1,2,3-Trichlorobenzene ND F2 10.0 ND ug/L 40 10 -170 1,2,4-Trichlorobenzene ND 10.0 ND ug/L 50 15 -169 1,1,1-Trichloroethane ND 10.0 9.675 ug/L 97 64 -133 1,1,2-Trichloroethane ND 10.0 9.451 ug/L 95 59 -137 Trichloroethene ND 10.0 13.17 ug/L 113 67 -121 Trichlorofluoromethane ND 10.0 7.714 ug/L 77 32 -157 1,1,2-Trichlorotrifluoroethane ND 10.0 8.419 ug/L 84 48 -134 Vinyl chloride 12.6 F1 10.0 15.25 F1 ug/L 27 47 -147 m-Xylene & p-Xylene ND 10.0 7.897 ug/L 79 61 -128 o-Xylene ND 10.0 8.089 ug/L 81 64 -120 1,2-Dibromoethane ND 10.0 8.714 ug/L 87 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 95 MS MS Qualifier Limits%Recovery 104Toluene-d8 (Surr)53 -124 994-Bromofluorobenzene (Surr)49 -118 109Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-133991-D-7 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 Acetone ND F2 10.0 ND F2 ug/L 115 29 -163 42 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 10.0 10.87 ug/L 109 68 -122 6 21 Chlorobromomethane ND 10.0 9.923 ug/L 99 59 -133 4 26 Dichlorobromomethane ND 10.0 9.496 ug/L 95 63 -132 18 24 Bromoform ND 10.0 7.719 ug/L 77 31 -164 12 35 Bromomethane ND 10.0 10.14 ug/L 101 20 -170 2 30 2-Butanone (MEK)ND 10.0 8.008 ug/L 80 35 -158 10 35 Carbon disulfide ND 10.0 8.665 ug/L 87 32 -139 5 25 Carbon tetrachloride ND 10.0 7.136 ug/L 71 60 -135 7 25 Chlorobenzene ND 10.0 8.660 ug/L 87 72 -123 11 19 Chlorodibromomethane ND 10.0 9.118 ug/L 91 51 -144 7 25 Chloroethane ND 10.0 10.45 ug/L 104 10 -170 4 29 Chloroform ND 10.0 9.564 ug/L 96 62 -121 0 22 Chloromethane ND 10.0 8.091 ug/L 81 37 -170 4 28 Cyclohexane ND 10.0 6.376 ug/L 64 50 -161 2 28 1,2-Dibromo-3-Chloropropane ND 10.0 9.998 ug/L 100 10 -170 11 35 1,2-Dichlorobenzene ND 10.0 9.392 ug/L 94 68 -116 14 20 1,3-Dichlorobenzene ND 10.0 9.065 ug/L 91 70 -119 18 18 1,4-Dichlorobenzene ND 10.0 9.184 ug/L 92 74 -117 14 17 Dichlorodifluoromethane ND 10.0 ND ug/L 38 21 -165 9 26 1,1-Dichloroethane ND F1 10.0 11.11 ug/L 111 59 -125 14 20 1,2-Dichloroethane ND 10.0 11.41 ug/L 114 57 -149 10 27 Eurofins Pittsburgh Page 132 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-133991-D-7 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389738 cis-1,2-Dichloroethene 36.3 F1 10.0 44.49 ug/L 81 64 -122 12 22 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD trans-1,2-Dichloroethene ND 10.0 10.30 ug/L 103 62 -126 11 23 1,1-Dichloroethene ND 10.0 10.56 ug/L 106 49 -132 11 23 1,2-Dichloropropane ND 10.0 11.22 ug/L 112 65 -129 15 23 cis-1,3-Dichloropropene ND 10.0 10.49 ug/L 105 53 -140 20 26 trans-1,3-Dichloropropene ND 10.0 9.058 ug/L 91 57 -137 3 25 1,4-Dioxane ND *+200 ND ug/L NC 10 -170 NC 35 Ethylbenzene ND 10.0 9.072 ug/L 91 66 -122 15 22 2-Hexanone ND 10.0 8.939 ug/L 89 38 -157 14 35 Isopropylbenzene ND 10.0 8.180 ug/L 82 54 -130 20 22 Methyl acetate ND 20.0 ND ug/L 81 10 -170 6 35 Methylcyclohexane ND 10.0 5.990 ug/L 60 60 -127 5 26 Methylene Chloride ND 10.0 12.13 ug/L 121 51 -137 4 35 4-Methyl-2-pentanone (MIBK)ND 10.0 9.803 ug/L 98 29 -167 15 35 Methyl tert-butyl ether ND 10.0 11.37 ug/L 114 36 -141 7 35 Styrene ND 10.0 9.638 ug/L 96 68 -127 18 22 1,1,2,2-Tetrachloroethane ND 10.0 10.23 ug/L 102 47 -147 14 35 Tetrachloroethene ND 10.0 7.629 ug/L 76 60 -129 2 22 Toluene ND 10.0 9.329 ug/L 93 67 -128 1 22 1,2,3-Trichlorobenzene ND F2 10.0 5.762 F2 ug/L 58 10 -170 36 35 1,2,4-Trichlorobenzene ND 10.0 6.354 ug/L 64 15 -169 24 35 1,1,1-Trichloroethane ND 10.0 8.380 ug/L 84 64 -133 14 22 1,1,2-Trichloroethane ND 10.0 9.663 ug/L 97 59 -137 2 29 Trichloroethene ND 10.0 11.16 ug/L 93 67 -121 16 23 Trichlorofluoromethane ND 10.0 7.014 ug/L 70 32 -157 9 35 1,1,2-Trichlorotrifluoroethane ND 10.0 8.000 ug/L 80 48 -134 5 28 Vinyl chloride 12.6 F1 10.0 12.33 F1 ug/L -2 47 -147 21 25 m-Xylene & p-Xylene ND 10.0 9.353 ug/L 94 61 -128 17 21 o-Xylene ND 10.0 9.671 ug/L 97 64 -120 18 23 1,2-Dibromoethane ND 10.0 9.497 ug/L 95 55 -146 9 30 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 104 MSD MSD Qualifier Limits%Recovery 98Toluene-d8 (Surr)53 -124 1044-Bromofluorobenzene (Surr)49 -118 95Dibromofluoromethane (Surr)60 -132 Client Sample ID: Method BlankLab Sample ID: MB 180-389872/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 389872 RL MDL Acetone ND 20.0 ug/L 03/01/22 09:55 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 03/01/22 09:55 1Benzene ND 5.00 ug/L 03/01/22 09:55 1Chlorobromomethane ND 5.00 ug/L 03/01/22 09:55 1Dichlorobromomethane ND 5.00 ug/L 03/01/22 09:55 1Bromoform ND 5.00 ug/L 03/01/22 09:55 1Bromomethane Eurofins Pittsburgh Page 133 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389872/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 389872 RL MDL 2-Butanone (MEK)ND 5.00 ug/L 03/01/22 09:55 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 03/01/22 09:55 1Carbon disulfide ND 5.00 ug/L 03/01/22 09:55 1Carbon tetrachloride ND 5.00 ug/L 03/01/22 09:55 1Chlorobenzene ND 5.00 ug/L 03/01/22 09:55 1Chlorodibromomethane ND 5.00 ug/L 03/01/22 09:55 1Chloroethane ND 5.00 ug/L 03/01/22 09:55 1Chloroform ND 5.00 ug/L 03/01/22 09:55 1Chloromethane ND 5.00 ug/L 03/01/22 09:55 1Cyclohexane ND 5.00 ug/L 03/01/22 09:55 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 03/01/22 09:55 11,2-Dichlorobenzene ND 5.00 ug/L 03/01/22 09:55 11,3-Dichlorobenzene ND 5.00 ug/L 03/01/22 09:55 11,4-Dichlorobenzene ND 5.00 ug/L 03/01/22 09:55 1Dichlorodifluoromethane ND 5.00 ug/L 03/01/22 09:55 11,1-Dichloroethane ND 5.00 ug/L 03/01/22 09:55 11,2-Dichloroethane ND 5.00 ug/L 03/01/22 09:55 1cis-1,2-Dichloroethene ND 5.00 ug/L 03/01/22 09:55 1trans-1,2-Dichloroethene ND 5.00 ug/L 03/01/22 09:55 11,1-Dichloroethene ND 5.00 ug/L 03/01/22 09:55 11,2-Dichloropropane ND 5.00 ug/L 03/01/22 09:55 1cis-1,3-Dichloropropene ND 5.00 ug/L 03/01/22 09:55 1trans-1,3-Dichloropropene ND 1000 ug/L 03/01/22 09:55 11,4-Dioxane ND 5.00 ug/L 03/01/22 09:55 1Ethylbenzene ND 5.00 ug/L 03/01/22 09:55 12-Hexanone ND 5.00 ug/L 03/01/22 09:55 1Isopropylbenzene ND 25.0 ug/L 03/01/22 09:55 1Methyl acetate ND 5.00 ug/L 03/01/22 09:55 1Methylcyclohexane ND 5.00 ug/L 03/01/22 09:55 1Methylene Chloride ND 5.00 ug/L 03/01/22 09:55 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 03/01/22 09:55 1Methyl tert-butyl ether ND 5.00 ug/L 03/01/22 09:55 1Styrene ND 5.00 ug/L 03/01/22 09:55 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 03/01/22 09:55 1Tetrachloroethene ND 5.00 ug/L 03/01/22 09:55 1Toluene ND 5.00 ug/L 03/01/22 09:55 11,2,3-Trichlorobenzene ND 5.00 ug/L 03/01/22 09:55 11,2,4-Trichlorobenzene ND 5.00 ug/L 03/01/22 09:55 11,1,1-Trichloroethane ND 5.00 ug/L 03/01/22 09:55 11,1,2-Trichloroethane ND 5.00 ug/L 03/01/22 09:55 1Trichloroethene ND 5.00 ug/L 03/01/22 09:55 1Trichlorofluoromethane ND 5.00 ug/L 03/01/22 09:55 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 03/01/22 09:55 1Vinyl chloride ND 5.00 ug/L 03/01/22 09:55 1m-Xylene & p-Xylene ND 5.00 ug/L 03/01/22 09:55 1o-Xylene ND 5.00 ug/L 03/01/22 09:55 11,2-Dibromoethane Eurofins Pittsburgh Page 134 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389872/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 389872 1,2-Dichloroethane-d4 (Surr)95 52 -151 03/01/22 09:55 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 95 03/01/22 09:55 1Toluene-d8 (Surr)53 -124 75 03/01/22 09:55 14-Bromofluorobenzene (Surr)49 -118 97 03/01/22 09:55 1Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389872/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 389872 Acetone 10.0 ND ug/L 48 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 10.0 9.978 ug/L 100 68 -122 Chlorobromomethane 10.0 9.968 ug/L 100 59 -133 Dichlorobromomethane 10.0 10.45 ug/L 104 63 -132 Bromoform 10.0 11.43 ug/L 114 31 -164 Bromomethane 10.0 9.952 ug/L 100 20 -170 2-Butanone (MEK)10.0 6.433 ug/L 64 35 -158 Carbon disulfide 10.0 9.635 ug/L 96 32 -139 Carbon tetrachloride 10.0 10.16 ug/L 102 60 -135 Chlorobenzene 10.0 9.506 ug/L 95 72 -123 Chlorodibromomethane 10.0 10.93 ug/L 109 51 -144 Chloroethane 10.0 8.454 ug/L 85 10 -170 Chloroform 10.0 11.00 ug/L 110 62 -121 Chloromethane 10.0 6.707 ug/L 67 37 -170 Cyclohexane 10.0 8.137 ug/L 81 50 -161 1,2-Dibromo-3-Chloropropane 10.0 15.51 ug/L 155 10 -170 1,2-Dichlorobenzene 10.0 10.16 ug/L 102 68 -116 1,3-Dichlorobenzene 10.0 10.32 ug/L 103 70 -119 1,4-Dichlorobenzene 10.0 10.13 ug/L 101 74 -117 Dichlorodifluoromethane 10.0 4.088 J ug/L 41 21 -165 1,1-Dichloroethane 10.0 9.824 ug/L 98 59 -125 1,2-Dichloroethane 10.0 10.39 ug/L 104 57 -149 cis-1,2-Dichloroethene 10.0 10.17 ug/L 102 64 -122 trans-1,2-Dichloroethene 10.0 9.609 ug/L 96 62 -126 1,1-Dichloroethene 10.0 8.569 ug/L 86 49 -132 1,2-Dichloropropane 10.0 9.567 ug/L 96 65 -129 cis-1,3-Dichloropropene 10.0 10.56 ug/L 106 53 -140 trans-1,3-Dichloropropene 10.0 9.521 ug/L 95 57 -137 1,4-Dioxane 200 ND ug/L 86 10 -170 Ethylbenzene 10.0 9.788 ug/L 98 66 -122 2-Hexanone 10.0 5.757 ug/L 58 38 -157 Isopropylbenzene 10.0 10.09 ug/L 101 54 -130 Methyl acetate 20.0 20.38 J ug/L 102 10 -170 Methylcyclohexane 10.0 8.133 ug/L 81 60 -127 Methylene Chloride 10.0 9.887 ug/L 99 51 -137 4-Methyl-2-pentanone (MIBK)10.0 8.306 ug/L 83 29 -167 Methyl tert-butyl ether 10.0 9.494 ug/L 95 36 -141 Styrene 10.0 10.52 ug/L 105 68 -127 Eurofins Pittsburgh Page 135 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389872/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 389872 1,1,2,2-Tetrachloroethane 10.0 8.932 ug/L 89 47 -147 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Tetrachloroethene 10.0 9.682 ug/L 97 60 -129 Toluene 10.0 9.811 ug/L 98 67 -128 1,2,3-Trichlorobenzene 10.0 7.220 ug/L 72 10 -170 1,2,4-Trichlorobenzene 10.0 9.045 ug/L 90 15 -169 1,1,1-Trichloroethane 10.0 10.43 ug/L 104 64 -133 1,1,2-Trichloroethane 10.0 9.335 ug/L 93 59 -137 Trichloroethene 10.0 10.25 ug/L 103 67 -121 Trichlorofluoromethane 10.0 8.373 ug/L 84 32 -157 1,1,2-Trichlorotrifluoroethane 10.0 8.515 ug/L 85 48 -134 Vinyl chloride 10.0 7.306 ug/L 73 47 -147 m-Xylene & p-Xylene 10.0 9.961 ug/L 100 61 -128 o-Xylene 10.0 10.60 ug/L 106 64 -120 1,2-Dibromoethane 10.0 9.525 ug/L 95 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 102 LCS LCS Qualifier Limits%Recovery 100Toluene-d8 (Surr)53 -124 1094-Bromofluorobenzene (Surr)49 -118 109Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-134087-A-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 389872 Trichloroethene 18.6 10.0 29.62 ug/L 110 67 -121 1 23 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 106 MSD MSD Qualifier Limits%Recovery 96Toluene-d8 (Surr)53 -124 1104-Bromofluorobenzene (Surr)49 -118 107Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix SpikeLab Sample ID: 180-134087-B-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 389872 Trichloroethene 18.6 10.0 29.28 ug/L 106 67 -121 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 107 MS MS Qualifier Limits%Recovery 104Toluene-d8 (Surr)53 -124 1124-Bromofluorobenzene (Surr)49 -118 113Dibromofluoromethane (Surr)60 -132 Eurofins Pittsburgh Page 136 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389873/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 389873 RL MDL Acetone ND 20.0 ug/L 03/01/22 12:15 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 03/01/22 12:15 1Benzene ND 5.00 ug/L 03/01/22 12:15 1Chlorobromomethane ND 5.00 ug/L 03/01/22 12:15 1Dichlorobromomethane ND 5.00 ug/L 03/01/22 12:15 1Bromoform ND 5.00 ug/L 03/01/22 12:15 1Bromomethane ND 5.00 ug/L 03/01/22 12:15 12-Butanone (MEK) ND 5.00 ug/L 03/01/22 12:15 1Carbon disulfide ND 5.00 ug/L 03/01/22 12:15 1Carbon tetrachloride ND 5.00 ug/L 03/01/22 12:15 1Chlorobenzene ND 5.00 ug/L 03/01/22 12:15 1Chlorodibromomethane ND 5.00 ug/L 03/01/22 12:15 1Chloroethane ND 5.00 ug/L 03/01/22 12:15 1Chloroform ND 5.00 ug/L 03/01/22 12:15 1Chloromethane ND 5.00 ug/L 03/01/22 12:15 1Cyclohexane ND 5.00 ug/L 03/01/22 12:15 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 03/01/22 12:15 11,2-Dichlorobenzene ND 5.00 ug/L 03/01/22 12:15 11,3-Dichlorobenzene ND 5.00 ug/L 03/01/22 12:15 11,4-Dichlorobenzene ND 5.00 ug/L 03/01/22 12:15 1Dichlorodifluoromethane ND 5.00 ug/L 03/01/22 12:15 11,1-Dichloroethane ND 5.00 ug/L 03/01/22 12:15 11,2-Dichloroethane ND 5.00 ug/L 03/01/22 12:15 1cis-1,2-Dichloroethene ND 5.00 ug/L 03/01/22 12:15 1trans-1,2-Dichloroethene ND 5.00 ug/L 03/01/22 12:15 11,1-Dichloroethene ND 5.00 ug/L 03/01/22 12:15 11,2-Dichloropropane ND 5.00 ug/L 03/01/22 12:15 1cis-1,3-Dichloropropene ND 5.00 ug/L 03/01/22 12:15 1trans-1,3-Dichloropropene ND 1000 ug/L 03/01/22 12:15 11,4-Dioxane ND 5.00 ug/L 03/01/22 12:15 1Ethylbenzene ND 5.00 ug/L 03/01/22 12:15 12-Hexanone ND 5.00 ug/L 03/01/22 12:15 1Isopropylbenzene ND 25.0 ug/L 03/01/22 12:15 1Methyl acetate ND 5.00 ug/L 03/01/22 12:15 1Methylcyclohexane ND 5.00 ug/L 03/01/22 12:15 1Methylene Chloride ND 5.00 ug/L 03/01/22 12:15 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 03/01/22 12:15 1Methyl tert-butyl ether ND 5.00 ug/L 03/01/22 12:15 1Styrene ND 5.00 ug/L 03/01/22 12:15 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 03/01/22 12:15 1Tetrachloroethene ND 5.00 ug/L 03/01/22 12:15 1Toluene ND 5.00 ug/L 03/01/22 12:15 11,2,3-Trichlorobenzene ND 5.00 ug/L 03/01/22 12:15 11,2,4-Trichlorobenzene ND 5.00 ug/L 03/01/22 12:15 11,1,1-Trichloroethane ND 5.00 ug/L 03/01/22 12:15 11,1,2-Trichloroethane ND 5.00 ug/L 03/01/22 12:15 1Trichloroethene ND 5.00 ug/L 03/01/22 12:15 1Trichlorofluoromethane ND 5.00 ug/L 03/01/22 12:15 11,1,2-Trichlorotrifluoroethane Eurofins Pittsburgh Page 137 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-389873/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 389873 RL MDL Vinyl chloride ND 5.00 ug/L 03/01/22 12:15 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 03/01/22 12:15 1m-Xylene & p-Xylene ND 5.00 ug/L 03/01/22 12:15 1o-Xylene ND 5.00 ug/L 03/01/22 12:15 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)88 52 -151 03/01/22 12:15 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 94 03/01/22 12:15 1Toluene-d8 (Surr)53 -124 93 03/01/22 12:15 14-Bromofluorobenzene (Surr)49 -118 86 03/01/22 12:15 1Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389873/25 Matrix: Water Prep Type: Total/NA Analysis Batch: 389873 Acetone 10.0 6.961 J ug/L 70 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 10.0 10.27 ug/L 103 68 -122 Chlorobromomethane 10.0 9.953 ug/L 100 59 -133 Dichlorobromomethane 10.0 8.397 ug/L 84 63 -132 Bromoform 10.0 7.218 ug/L 72 31 -164 Bromomethane 10.0 8.431 ug/L 84 20 -170 2-Butanone (MEK)10.0 8.915 ug/L 89 35 -158 Carbon disulfide 10.0 6.136 ug/L 61 32 -139 Carbon tetrachloride 10.0 6.261 ug/L 63 60 -135 Chlorobenzene 10.0 8.678 ug/L 87 72 -123 Chlorodibromomethane 10.0 8.933 ug/L 89 51 -144 Chloroethane 10.0 8.399 ug/L 84 10 -170 Chloroform 10.0 9.515 ug/L 95 62 -121 Chloromethane 10.0 8.375 ug/L 84 37 -170 Cyclohexane 10.0 6.210 ug/L 62 50 -161 1,2-Dibromo-3-Chloropropane 10.0 8.586 ug/L 86 10 -170 1,2-Dichlorobenzene 10.0 8.839 ug/L 88 68 -116 1,3-Dichlorobenzene 10.0 7.959 ug/L 80 70 -119 1,4-Dichlorobenzene 10.0 8.359 ug/L 84 74 -117 Dichlorodifluoromethane 10.0 ND ug/L 24 21 -165 1,1-Dichloroethane 10.0 9.822 ug/L 98 59 -125 1,2-Dichloroethane 10.0 9.479 ug/L 95 57 -149 cis-1,2-Dichloroethene 10.0 10.47 ug/L 105 64 -122 trans-1,2-Dichloroethene 10.0 8.727 ug/L 87 62 -126 1,1-Dichloroethene 10.0 8.409 ug/L 84 49 -132 1,2-Dichloropropane 10.0 9.480 ug/L 95 65 -129 cis-1,3-Dichloropropene 10.0 8.953 ug/L 90 53 -140 trans-1,3-Dichloropropene 10.0 8.891 ug/L 89 57 -137 1,4-Dioxane 200 ND ug/L 59 10 -170 Ethylbenzene 10.0 7.930 ug/L 79 66 -122 2-Hexanone 10.0 8.485 ug/L 85 38 -157 Isopropylbenzene 10.0 6.824 ug/L 68 54 -130 Eurofins Pittsburgh Page 138 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-389873/25 Matrix: Water Prep Type: Total/NA Analysis Batch: 389873 Methyl acetate 20.0 17.03 J ug/L 85 10 -170 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Methylcyclohexane 10.0 4.892 J *- ug/L 49 60 -127 Methylene Chloride 10.0 12.90 ug/L 129 51 -137 4-Methyl-2-pentanone (MIBK)10.0 9.166 ug/L 92 29 -167 Methyl tert-butyl ether 10.0 11.54 ug/L 115 36 -141 Styrene 10.0 8.509 ug/L 85 68 -127 1,1,2,2-Tetrachloroethane 10.0 9.334 ug/L 93 47 -147 Tetrachloroethene 10.0 6.676 ug/L 67 60 -129 Toluene 10.0 10.05 ug/L 100 67 -128 1,2,3-Trichlorobenzene 10.0 4.222 J ug/L 42 10 -170 1,2,4-Trichlorobenzene 10.0 5.395 ug/L 54 15 -169 1,1,1-Trichloroethane 10.0 7.492 ug/L 75 64 -133 1,1,2-Trichloroethane 10.0 9.425 ug/L 94 59 -137 Trichloroethene 10.0 8.545 ug/L 85 67 -121 Trichlorofluoromethane 10.0 5.085 ug/L 51 32 -157 1,1,2-Trichlorotrifluoroethane 10.0 6.235 ug/L 62 48 -134 Vinyl chloride 10.0 5.173 ug/L 52 47 -147 m-Xylene & p-Xylene 10.0 8.203 ug/L 82 61 -128 o-Xylene 10.0 8.287 ug/L 83 64 -120 1,2-Dibromoethane 10.0 9.656 ug/L 97 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 94 LCS LCS Qualifier Limits%Recovery 102Toluene-d8 (Surr)53 -124 974-Bromofluorobenzene (Surr)49 -118 100Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 180-389873/26 Matrix: Water Prep Type: Total/NA Analysis Batch: 389873 Acetone 10.0 7.306 J ug/L 73 29 -163 5 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 10.0 10.97 ug/L 110 68 -122 7 21 Chlorobromomethane 10.0 11.52 ug/L 115 59 -133 15 26 Dichlorobromomethane 10.0 9.255 ug/L 93 63 -132 10 24 Bromoform 10.0 7.890 ug/L 79 31 -164 9 35 Bromomethane 10.0 10.75 ug/L 107 20 -170 24 30 2-Butanone (MEK)10.0 8.091 ug/L 81 35 -158 10 35 Carbon disulfide 10.0 8.109 *1 ug/L 81 32 -139 28 25 Carbon tetrachloride 10.0 7.564 ug/L 76 60 -135 19 25 Chlorobenzene 10.0 9.003 ug/L 90 72 -123 4 19 Chlorodibromomethane 10.0 9.639 ug/L 96 51 -144 8 25 Chloroethane 10.0 10.96 ug/L 110 10 -170 26 29 Chloroform 10.0 11.02 ug/L 110 62 -121 15 22 Chloromethane 10.0 10.65 ug/L 107 37 -170 24 28 Cyclohexane 10.0 7.350 ug/L 74 50 -161 17 28 1,2-Dibromo-3-Chloropropane 10.0 11.54 ug/L 115 10 -170 29 35 Eurofins Pittsburgh Page 139 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 180-389873/26 Matrix: Water Prep Type: Total/NA Analysis Batch: 389873 1,2-Dichlorobenzene 10.0 9.954 ug/L 100 68 -116 12 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,3-Dichlorobenzene 10.0 9.380 ug/L 94 70 -119 16 18 1,4-Dichlorobenzene 10.0 9.708 ug/L 97 74 -117 15 17 Dichlorodifluoromethane 10.0 3.169 J *1 ug/L 32 21 -165 28 26 1,1-Dichloroethane 10.0 11.95 ug/L 120 59 -125 20 20 1,2-Dichloroethane 10.0 12.04 ug/L 120 57 -149 24 27 cis-1,2-Dichloroethene 10.0 11.90 ug/L 119 64 -122 13 22 trans-1,2-Dichloroethene 10.0 11.11 *1 ug/L 111 62 -126 24 23 1,1-Dichloroethene 10.0 10.58 ug/L 106 49 -132 23 23 1,2-Dichloropropane 10.0 10.81 ug/L 108 65 -129 13 23 cis-1,3-Dichloropropene 10.0 11.22 ug/L 112 53 -140 22 26 trans-1,3-Dichloropropene 10.0 9.543 ug/L 95 57 -137 7 25 1,4-Dioxane 200 247.1 J *1 ug/L 124 10 -170 71 35 Ethylbenzene 10.0 9.038 ug/L 90 66 -122 13 22 2-Hexanone 10.0 9.555 ug/L 96 38 -157 12 35 Isopropylbenzene 10.0 8.340 ug/L 83 54 -130 20 22 Methyl acetate 20.0 19.57 J ug/L 98 10 -170 14 35 Methylcyclohexane 10.0 6.190 ug/L 62 60 -127 23 26 Methylene Chloride 10.0 16.31 *+ ug/L 163 51 -137 23 35 4-Methyl-2-pentanone (MIBK)10.0 9.565 ug/L 96 29 -167 4 35 Methyl tert-butyl ether 10.0 14.05 ug/L 140 36 -141 20 35 Styrene 10.0 9.969 ug/L 100 68 -127 16 22 1,1,2,2-Tetrachloroethane 10.0 10.97 ug/L 110 47 -147 16 35 Tetrachloroethene 10.0 6.832 ug/L 68 60 -129 2 22 Toluene 10.0 9.807 ug/L 98 67 -128 2 22 1,2,3-Trichlorobenzene 10.0 6.878 *1 ug/L 69 10 -170 48 35 1,2,4-Trichlorobenzene 10.0 7.531 ug/L 75 15 -169 33 35 1,1,1-Trichloroethane 10.0 9.209 ug/L 92 64 -133 21 22 1,1,2-Trichloroethane 10.0 10.40 ug/L 104 59 -137 10 29 Trichloroethene 10.0 9.158 ug/L 92 67 -121 7 23 Trichlorofluoromethane 10.0 7.383 *1 ug/L 74 32 -157 37 35 1,1,2-Trichlorotrifluoroethane 10.0 7.990 ug/L 80 48 -134 25 28 Vinyl chloride 10.0 7.551 *1 ug/L 76 47 -147 37 25 m-Xylene & p-Xylene 10.0 9.103 ug/L 91 61 -128 10 21 o-Xylene 10.0 9.696 ug/L 97 64 -120 16 23 1,2-Dibromoethane 10.0 10.00 ug/L 100 55 -146 4 30 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 115 LCSD LCSD Qualifier Limits%Recovery 106Toluene-d8 (Surr)53 -124 1184-Bromofluorobenzene (Surr)49 -118 122Dibromofluoromethane (Surr)60 -132 Eurofins Pittsburgh Page 140 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Association Summary Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA Analysis Batch: 388935 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-133728-1 MW-5 Total/NA Water EPA 8260D180-133728-2 MW-5I Total/NA Water EPA 8260D180-133728-3 MW-20I Total/NA Water EPA 8260D180-133728-4 MW-17I Total/NA Water EPA 8260D180-133728-5 MW-11I Total/NA Water EPA 8260DMB 180-388935/8 Method Blank Total/NA Water EPA 8260DLCS 180-388935/25 Lab Control Sample Total/NA Water EPA 8260DLCSD 180-388935/26 Lab Control Sample Dup Total/NA Analysis Batch: 389102 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-133790-1 B-1 Total/NA Water EPA 8260D180-133790-2 B-1-a Total/NA Water EPA 8260D180-133790-3 B-3 Total/NA Water EPA 8260D180-133790-4 MW-2 Total/NA Water EPA 8260D180-133790-5 MW-2I Total/NA Water EPA 8260DMB 180-389102/5 Method Blank Total/NA Water EPA 8260DLCS 180-389102/3 Lab Control Sample Total/NA Water EPA 8260D180-133790-1 MS B-1 Total/NA Water EPA 8260D180-133790-1 MSD B-1 Total/NA Analysis Batch: 389226 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-133790-6 MW-2A Total/NA Water EPA 8260D180-133790-7 MW-3 Total/NA Water EPA 8260D180-133790-8 MW-3I Total/NA Water EPA 8260D180-133790-9 MW-7 Total/NA Water EPA 8260D180-133790-10 MW-7I Total/NA Water EPA 8260D180-133790-11 MW-9 Total/NA Water EPA 8260D180-133790-11 - DL MW-9 Total/NA Water EPA 8260D180-133790-12 MW-9I Total/NA Water EPA 8260D180-133790-12 - DL MW-9I Total/NA Water EPA 8260D180-133790-13 MW-11 Total/NA Water EPA 8260DMB 180-389226/6 Method Blank Total/NA Water EPA 8260DLCS 180-389226/4 Lab Control Sample Total/NA Analysis Batch: 389414 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-133839-1 MW-4 Total/NA Water EPA 8260D180-133839-2 MW-4I Total/NA Water EPA 8260D180-133839-3 MW-6 Total/NA Water EPA 8260D180-133839-4 MW-6I Total/NA Water EPA 8260D180-133839-5 MW-8 Total/NA Water EPA 8260D180-133839-6 MW-8-a Total/NA Water EPA 8260D180-133839-9 MW-13 Total/NA Water EPA 8260D180-133839-11 MW-16 Total/NA Water EPA 8260DMB 180-389414/8 Method Blank Total/NA Water EPA 8260DLCS 180-389414/5 Lab Control Sample Total/NA Water EPA 8260DLCSD 180-389414/25 Lab Control Sample Dup Total/NA Eurofins Pittsburgh Page 141 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Association Summary Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA Analysis Batch: 389531 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-133839-5 - DL MW-8 Total/NA Water EPA 8260D180-133839-6 - DL MW-8-a Total/NA Water EPA 8260D180-133839-7 MW-12 Total/NA Water EPA 8260D180-133839-8 - DL MW-12I Total/NA Water EPA 8260D180-133839-9 - DL MW-13 Total/NA Water EPA 8260D180-133839-10 - DL MW-13I Total/NA Water EPA 8260D180-133839-11 - DL MW-16 Total/NA Water EPA 8260D180-133991-6 MW-15 Total/NA Water EPA 8260DMB 180-389531/34 Method Blank Total/NA Water EPA 8260DLCS 180-389531/5 Lab Control Sample Total/NA Water EPA 8260D180-133991-D-7 MS Matrix Spike Total/NA Water EPA 8260D180-133991-D-7 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 389659 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-133839-12 MW-16-c Total/NA Water EPA 8260D180-133991-1 MW-10 Total/NA Water EPA 8260D180-133991-2 MW-10I Total/NA Water EPA 8260D180-133991-4 MW-14-C Total/NA Water EPA 8260D180-133991-5 MW-14I Total/NA Water EPA 8260D180-133991-8 MW-18I Total/NA Water EPA 8260D180-133991-9 MW-19I Total/NA Water EPA 8260DMB 180-389659/8 Method Blank Total/NA Water EPA 8260DLCS 180-389659/3 Lab Control Sample Total/NA Water EPA 8260D180-133991-8 MS MW-18I Total/NA Water EPA 8260D180-133991-8 MSD MW-18I Total/NA Water EPA 8260D180-133991-D-8 MS Matrix Spike Total/NA Water EPA 8260D180-133991-E-8 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 389738 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-133839-8 MW-12I Total/NA Water EPA 8260D180-133839-10 MW-13I Total/NA Water EPA 8260D180-133991-1 - DL MW-10 Total/NA Water EPA 8260D180-133991-2 - DL MW-10I Total/NA Water EPA 8260D180-133991-3 MW-14 Total/NA Water EPA 8260D180-133991-5 - DL MW-14I Total/NA Water EPA 8260D180-133991-6 - RA MW-15 Total/NA Water EPA 8260D180-133991-7 MW-15I Total/NA Water EPA 8260DMB 180-389738/8 Method Blank Total/NA Water EPA 8260DLCS 180-389738/3 Lab Control Sample Total/NA Water EPA 8260D180-133991-7 MS MW-15I Total/NA Water EPA 8260D180-133991-7 MSD MW-15I Total/NA Water EPA 8260D180-133991-D-7 MS Matrix Spike Total/NA Water EPA 8260D180-133991-D-7 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 389872 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-133991-5 - DL2 MW-14I Total/NA Water EPA 8260DMB 180-389872/5 Method Blank Total/NA Water EPA 8260DLCS 180-389872/3 Lab Control Sample Total/NA Eurofins Pittsburgh Page 142 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Association Summary Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA (Continued) Analysis Batch: 389872 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-134087-A-1 MSD Matrix Spike Duplicate Total/NA Water EPA 8260D180-134087-B-1 MS Matrix Spike Total/NA Analysis Batch: 389873 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-133991-9 - DL MW-19I Total/NA Water EPA 8260DMB 180-389873/9 Method Blank Total/NA Water EPA 8260DLCS 180-389873/25 Lab Control Sample Total/NA Water EPA 8260DLCSD 180-389873/26 Lab Control Sample Dup Total/NA Analysis Batch: 567694 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D180-133790-14 MW-11-C Total/NA Water 8260DMB 400-567694/5 Method Blank Total/NA Water 8260DLCS 400-567694/1002 Lab Control Sample Total/NA Analysis Batch: 567699 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM180-133728-1 MW-5 Total/NA Water 8260D SIM180-133728-2 MW-5I Total/NA Water 8260D SIM180-133728-3 MW-20I Total/NA Water 8260D SIM180-133728-4 MW-17I Total/NA Water 8260D SIM180-133728-5 MW-11I Total/NA Water 8260D SIM180-133728-6 MW-11I-C Total/NA Water 8260D SIM180-133790-1 B-1 Total/NA Water 8260D SIM180-133790-2 B-1-a Total/NA Water 8260D SIM180-133790-3 B-3 Total/NA Water 8260D SIM180-133790-4 MW-2 Total/NA Water 8260D SIM180-133790-5 MW-2I Total/NA Water 8260D SIM180-133790-6 MW-2A Total/NA Water 8260D SIM180-133790-7 MW-3 Total/NA Water 8260D SIM180-133790-8 MW-3I Total/NA Water 8260D SIM180-133790-9 MW-7 Total/NA Water 8260D SIM180-133790-10 MW-7I Total/NA Water 8260D SIM180-133790-11 MW-9 Total/NA Water 8260D SIM180-133790-12 MW-9I Total/NA Water 8260D SIM180-133790-13 MW-11 Total/NA Water 8260D SIM180-133790-14 MW-11-C Total/NA Water 8260D SIMMB 400-567699/5 Method Blank Total/NA Water 8260D SIMLCS 400-567699/1003 Lab Control Sample Total/NA Water 8260D SIM180-133728-1 MS MW-5 Total/NA Water 8260D SIM180-133728-1 MSD MW-5 Total/NA Analysis Batch: 567866 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM180-133839-1 MW-4 Total/NA Water 8260D SIM180-133839-2 MW-4I Total/NA Water 8260D SIM180-133839-3 MW-6 Total/NA Water 8260D SIM180-133839-4 MW-6I Total/NA Water 8260D SIM180-133839-5 MW-8 Total/NA Water 8260D SIM180-133839-6 MW-8-a Total/NA Eurofins Pittsburgh Page 143 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Association Summary Job ID: 180-133728-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA (Continued) Analysis Batch: 567866 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM180-133839-7 MW-12 Total/NA Water 8260D SIM180-133839-8 MW-12I Total/NA Water 8260D SIM180-133839-9 MW-13 Total/NA Water 8260D SIM180-133839-10 MW-13I Total/NA Water 8260D SIM180-133839-11 MW-16 Total/NA Water 8260D SIM180-133839-12 MW-16-c Total/NA Water 8260D SIMMB 400-567866/5 Method Blank Total/NA Water 8260D SIMLCS 400-567866/1003 Lab Control Sample Total/NA Water 8260D SIM180-133839-1 MS MW-4 Total/NA Water 8260D SIM180-133839-1 MSD MW-4 Total/NA Analysis Batch: 568080 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D180-133728-6 MW-11I-C Total/NA Water 8260DMB 400-568080/28 Method Blank Total/NA Water 8260DLCS 400-568080/1002 Lab Control Sample Total/NA Water 8260D400-216026-A-2 MS Matrix Spike Total/NA Water 8260D400-216026-A-2 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 568096 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM180-133991-1 MW-10 Total/NA Water 8260D SIM180-133991-2 MW-10I Total/NA Water 8260D SIM180-133991-3 MW-14 Total/NA Water 8260D SIM180-133991-4 MW-14-C Total/NA Water 8260D SIM180-133991-5 MW-14I Total/NA Water 8260D SIM180-133991-6 MW-15 Total/NA Water 8260D SIM180-133991-7 MW-15I Total/NA Water 8260D SIM180-133991-8 MW-18I Total/NA Water 8260D SIM180-133991-9 MW-19I Total/NA Water 8260D SIMMB 400-568096/5 Method Blank Total/NA Water 8260D SIMLCS 400-568096/1003 Lab Control Sample Total/NA Eurofins Pittsburgh Page 144 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Page 145 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Login Sample Receipt Checklist Client: ERM-West Job Number: 180-133728-1 Login Number: 133728 Question Answer Comment Creator: Watson, Debbie List Source: Eurofins Pittsburgh List Number: 1 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. TrueThe cooler's custody seal, if present, is intact. TrueSample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded. TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? FalseThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. TrueSample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Pittsburgh Page 146 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 Login Sample Receipt Checklist Client: ERM-West Job Number: 180-133728-1 Login Number: 133728 Question Answer Comment Creator: Roberts, Alexis J List Source: Eurofins Pensacola List Creation: 02/18/22 10:23 AMList Number: 2 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. N/AThe cooler's custody seal, if present, is intact. N/ASample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded.0.0°C, 1.6°C IR10 TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. N/ASample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Pittsburgh Page 147 of 147 9/6/2022 (Rev. 4) 1 2 3 4 5 6 7 8 9 10 11 12 13 ANALYTICAL REPORT Eurofins Denver 4955 Yarrow Street Arvada, CO 80002 Tel: (303)736-0100 Laboratory Job ID: 280-162142-1 Client Project/Site: EDO Western Corp. Revision: 1 For: ERM-West 1050 SW 6th Avenue Suite 1650 Portland, Oregon 97204 Attn: Mr. Justin Dauphinais Authorized for release by: 9/6/2022 3:00:50 PM Ken Hayes, Project Manager II (615)301-5035 Ken.Hayes@et.eurofinsus.com The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Results relate only to the items tested and the sample(s) as received by the laboratory. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Table of Contents Client: ERM-West Project/Site: EDO Western Corp. Laboratory Job ID: 280-162142-1 Page 2 of 128 Eurofins Denver 9/6/2022 (Rev. 1) Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .113 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .118 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .126 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .128 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Definitions/Glossary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Qualifiers GC/MS VOA Qualifier Description F1 MS and/or MSD recovery exceeds control limits. Qualifier F2 MS/MSD RPD exceeds control limits H Sample was prepped or analyzed beyond the specified holding time J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Denver Page 3 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Job ID: 280-162142-1 Laboratory: Eurofins Denver Narrative Job Narrative 280-162142-1 Revised Report: Revised to combine all data from the May 2022 sampling event into one report. This report replaces the one generated on 05/25/22. Comments No additional comments. Receipt The samples were received on 5/10/2022 2:50 PM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 3.8º C. GC/MS VOA Method 8260D: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 280-575756 were outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits. Method 8260D: The matrix spike / matrix spike duplicate / sample duplicate (MS/MSD/DUP) precision for analytical batch 280-575756 was outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample / laboratory control sample duplicate (LCS/LCSD) precision was within acceptance limits. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. GC VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 280-162142-2 Comments No additional comments. Receipt The samples were received on 5/10/2022 2:50 PM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 3.8º C. GC/MS VOA Method 8260D SIM: Insufficient sample volume was available to perform a matrix spike/matrix spike duplicate (MS/MSD) associated with analytical batch 280-575778. An LCS/LCSD pair was analyzed for batch precision and accuracy. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. GC VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 280-162228-1 Comments No additional comments. Receipt Eurofins Denver Page 4 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Job ID: 280-162142-1 (Continued) Laboratory: Eurofins Denver (Continued) The samples were received on 5/11/2022 2:40 PM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 5.1º C. GC/MS VOA Method 8260D: The continuing calibration verification (CCV) associated with batch 280-575885 recovered above the upper control limit for chloromethane (+21.8%D, limit of 20%D). The samples associated with this CCV were non-detects for the affected analytes; therefore, the data have been reported. Method 8260D: The following compounds were outside control limits in the continuing calibration verification (CCV) associated with batch 280-575885: 1,4-dioxane (-24.8%D, limit of 20%D) and 1,2-dibromo-3-chloropropane (-27.1%D, limit of 20%D). These are both considered poor performers and both are within control limits in the LCS and LCSD. There is insufficient holding time remaining for re-analysis; therefore, the data have been reported. The associated samples were non-detect for the affected analytes. Method 8260D: The initial calibration verification (ICV) result for batch 280-575885 was above the upper control limit for bromomethane (+33.5%D, limit of 20%D). Sample results were non-detects, and have been reported as qualified data. Method 8260D: Insufficient sample volume was available to perform a matrix spike/matrix spike duplicate (MS/MSD) associated with analytical batch 280-575885. An LCS/LCSD was analyzed to provide batch precision and accuracy. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. GC VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 280-162228-2 Comments No additional comments. Receipt The samples were received on 5/11/2022 2:40 PM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 5.1º C. GC/MS VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. GC VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 280-162293-1 Revised Report: Revised to include MS/MSD Data for 1,4-Dioxane in batch 280-575851 previously omitted in 280-162293-2. This report replaces the one generated on 05/26/22 @ 17:15 Comments No additional comments. Receipt The samples were received on 5/12/2022 10:20 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 4.2º C. Receipt Exceptions One or more containers for the following sample was received broken or leaking: MW-9I (280-162293-6). 2 VOA contianers were received Eurofins Denver Page 5 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Job ID: 280-162142-1 (Continued) Laboratory: Eurofins Denver (Continued) broken for this sample. GC/MS VOA Method 8260D: The continuing calibration verification (CCV) associated with batch 280-576078 recovered outside control limits of 20%D for 1,2,3-Trichlorobenzene, 1,2-Dibromo-3-Chloropropane, 1,4-Dioxane, Acetone,and Methyl acetate. These compounds are poor performers and the LCS/LCSD recovered within control limits. There is insufficient hold time remaining therefore the data were qualified and reported. Method 8260D: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 280-576078 were outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) recovery was within acceptance limits. Method 8260D: The continuing calibration verification (CCV) associated with batch 280-576078 recovered outside acceptance criteria, low biased, for 1,2,4-Trichlorobenzene, 1,2-Dichloroethane, Chlorobromomethane and Methyl Chloride. The hold time is up and the LCS and LCSD passed within control limits, so the data are reported. Method 8260D: Reanalysis of the following sample was performed outside of the analytical holding time for cis-1,2-Dichloroethene due to the initial result being over the calibration range for this compound: MW-14I (280-162293-12). Method 8260D: Insufficient sample volume was available to perform a matrix spike/matrix spike duplicate (MS/MSD) associated with analytical batch 280-576238. An LCS/LCSD pair was analyzed for batch precision and accuracy. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. GC VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Metals Method 6010D: The method blank associated with preparation batch 280-575456 and 280-575615 and analytical batch 280-575804 contained 51.3 ppb Fe which is greater than one-half the reporting limit (RL) of 100 ppb. The samples will not be re-analyzed because they are <RL. The sample results have been qualified and reported. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. General Chemistry No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 280-162293-2 Revised Report: Revised to include MS/MSD Data for 1,4-Dioxane in batch 280-575851 previously omitted. This report replaces the one generated on 05/26/22 @ 17:15 Comments No additional comments. Receipt The samples were received on 5/12/2022 10:20 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 4.2º C. Receipt Exceptions One or more containers for the following sample was received broken or leaking: MW-9I (280-162293-6). 2 VOA contianers were received broken for this sample. GC/MS VOA Method 8260D SIM: The matrix spike / matrix spike duplicate (MS/MSD) precision for analytical batch 280-575851 was outside control Eurofins Denver Page 6 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Job ID: 280-162142-1 (Continued) Laboratory: Eurofins Denver (Continued) limits. Sample matrix interference is suspected. The LCS/LCSD precision was in control. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. GC VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 280-162353-1 Comments No additional comments. Receipt The samples were received on 5/13/2022 2:55 PM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 2.4º C. Receipt Exceptions A trip blank was submitted for analysis with these samples; however, it was not listed on the Chain of Custody (COC). The client was contacted and indicated that this one was not needed. GC/MS VOA Method 8260D: The continuing calibration verification (CCV) associated with batch 280-576171 recovered above the upper control limit for numerous compounds. The samples associated with this CCV were non-detects for the affected analytes; therefore, the data have been reported. Method 8260D: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for numerous compounds (recoveries both high and low) for analytical batch 280-576171 were outside control limits. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) and duplicate (LCSD) recoveries were within acceptance limits. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. GC VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 280-162353-2 Comments No additional comments. Receipt The samples were received on 5/13/2022 2:55 PM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 2.4º C. GC/MS VOA Method 8260D SIM: Insufficient sample volume was available to perform a matrix spike/matrix spike duplicate (MS/MSD) associated with analytical batch 280-576090. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. GC VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Eurofins Denver Page 7 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Client Sample ID: MW-17I Lab Sample ID: 280-162142-1 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.634 8260D SIM Client Sample ID: MW-11 Lab Sample ID: 280-162142-2 No Detections. Client Sample ID: MW-11I Lab Sample ID: 280-162142-3 No Detections. Client Sample ID: MW-11I-c Lab Sample ID: 280-162142-4 No Detections. Client Sample ID: MW-5 Lab Sample ID: 280-162142-5 No Detections. Client Sample ID: MW-5I Lab Sample ID: 280-162142-6 No Detections. Client Sample ID: MW-2 Lab Sample ID: 280-162142-7 No Detections. Client Sample ID: MW-3I Lab Sample ID: 280-162228-1 No Detections. Client Sample ID: MW-3 Lab Sample ID: 280-162228-2 cis-1,2-Dichloroethene RL 1.00 ug/L MDLAnalyteResult Qualifier Unit Dil Fac D Method Prep Type Total/NA11.30 8260D Client Sample ID: MW-2A Lab Sample ID: 280-162228-3 No Detections. Client Sample ID: MW-2I Lab Sample ID: 280-162228-4 1,2-Dichloroethane RL 1.00 ug/L MDLAnalyteResult Qualifier Unit Dil Fac D Method Prep Type Total/NA11.02 8260D Client Sample ID: MW-15 Lab Sample ID: 280-162228-5 cis-1,2-Dichloroethene RL 1.00 ug/L MDLAnalyteResult Qualifier Unit Dil Fac D Method Prep Type Total/NA13.14 8260D Client Sample ID: MW-15I Lab Sample ID: 280-162228-6 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA13.67 8260D SIM 1,1-Dichloroethane 1.00 ug/L Total/NA13.53 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA117.5 8260D trans-1,2-Dichloroethene 1.00 ug/L Total/NA11.09 8260D Trichloroethene 1.00 ug/L Total/NA11.08 8260D Vinyl chloride 1.00 ug/L Total/NA127.7 8260D Eurofins Denver This Detection Summary does not include radiochemical test results. Page 8 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Client Sample ID: MW-7I Lab Sample ID: 280-162228-7 No Detections. Client Sample ID: MW-7 Lab Sample ID: 280-162228-8 No Detections. Client Sample ID: MW-8 Lab Sample ID: 280-162228-9 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA11.58 8260D SIM 1,1-Dichloroethane 1.00 ug/L Total/NA114.7 8260D 1,2-Dichloroethane 1.00 ug/L Total/NA11.97 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA159.2 8260D 1,1-Dichloroethene 1.00 ug/L Total/NA13.97 8260D Trichloroethene 1.00 ug/L Total/NA17.75 8260D Vinyl chloride 1.00 ug/L Total/NA14.44 8260D Client Sample ID: MW-8-a Lab Sample ID: 280-162228-10 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA11.57 8260D SIM 1,1-Dichloroethane 1.00 ug/L Total/NA114.6 8260D 1,2-Dichloroethane 1.00 ug/L Total/NA12.00 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA160.2 8260D 1,1-Dichloroethene 1.00 ug/L Total/NA13.97 8260D Trichloroethene 1.00 ug/L Total/NA17.96 8260D Vinyl chloride 1.00 ug/L Total/NA14.35 8260D Client Sample ID: B-1 Lab Sample ID: 280-162228-11 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA17.00 8260D SIM 1,2-Dichlorobenzene 1.00 ug/L Total/NA11.85 8260D 1,1-Dichloroethane 1.00 ug/L Total/NA13.57 8260D 1,2-Dichloroethane 1.00 ug/L Total/NA11.60 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA18.37 8260D 1,1-Dichloroethene 1.00 ug/L Total/NA12.00 8260D Client Sample ID: B-3 Lab Sample ID: 280-162228-12 No Detections. Client Sample ID: MW-20I Lab Sample ID: 280-162228-13 No Detections. Client Sample ID: MW-15-c Lab Sample ID: 280-162228-14 No Detections. Client Sample ID: MW-16 Lab Sample ID: 280-162293-1 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J1.39 8260D SIM 1,1-Dichloroethane 1.00 ug/L Total/NA12.46 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA157.8 8260D trans-1,2-Dichloroethene 1.00 ug/L Total/NA12.89 8260D Eurofins Denver This Detection Summary does not include radiochemical test results. Page 9 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Client Sample ID: MW-16 (Continued)Lab Sample ID: 280-162293-1 Vinyl chloride RL 1.00 ug/L MDLAnalyteResult Qualifier Unit Dil Fac D Method Prep Type Total/NA12.99 8260D Client Sample ID: MW-16-c Lab Sample ID: 280-162293-2 No Detections. Client Sample ID: MW-6 Lab Sample ID: 280-162293-3 1,1-Dichloroethane RL 1.00 ug/L MDLAnalyteResult Qualifier Unit Dil Fac D Method Prep Type Total/NA11.01 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA110.4 8260D Trichloroethene 1.00 ug/L Total/NA12.44 8260D Client Sample ID: MW-6I Lab Sample ID: 280-162293-4 No Detections. Client Sample ID: MW-9 Lab Sample ID: 280-162293-5 1,1-Dichloroethane RL 1.00 ug/L MDLAnalyteResult Qualifier Unit Dil Fac D Method Prep Type Total/NA11.36 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA195.4 8260D trans-1,2-Dichloroethene 1.00 ug/L Total/NA12.82 8260D Vinyl chloride 1.00 ug/L Total/NA11.88 8260D Client Sample ID: MW-9I Lab Sample ID: 280-162293-6 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA15.84 8260D SIM 1,2-Dichloroethane 10.0 ug/L Total/NA1026.0 8260D cis-1,2-Dichloroethene 10.0 ug/L Total/NA1013608260D trans-1,2-Dichloroethene 10.0 ug/L Total/NA1024.2 8260D 1,1-Dichloroethene 10.0 ug/L Total/NA1024.1 8260D Trichloroethene 10.0 ug/L Total/NA101308260D Methane 5.00 ug/L Total/NA155.4 RSK-175 Iron 100 ug/L Total Recoverable 1129 6010D Manganese 10.0 ug/L Total Recoverable 1310 6010D Manganese 10.0 ug/L Dissolved12146010D Sulfate 25.0 mg/L Total/NA53479056A Total Organic Carbon - Duplicates 1.00 mg/L Total/NA11.34 9060A Client Sample ID: MW-13 Lab Sample ID: 280-162293-7 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J F20.597 8260D SIM 1,1-Dichloroethane 1.00 ug/L Total/NA12.76 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA184.5 F1 8260D 1,1-Dichloroethene 1.00 ug/L Total/NA11.21 8260D Client Sample ID: MW-13I Lab Sample ID: 280-162293-8 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA13.95 8260D SIM Eurofins Denver This Detection Summary does not include radiochemical test results. Page 10 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Client Sample ID: MW-13I (Continued)Lab Sample ID: 280-162293-8 1,1-Dichloroethane RL 1.00 ug/L MDLAnalyteResult Qualifier Unit Dil Fac D Method Prep Type Total/NA19.84 8260D 1,2-Dichloroethane 1.00 ug/L Total/NA14.52 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA11618260D trans-1,2-Dichloroethene 1.00 ug/L Total/NA116.4 8260D 1,1-Dichloroethene 1.00 ug/L Total/NA17.10 8260D Tetrachloroethene 1.00 ug/L Total/NA118.4 8260D Trichloroethene 1.00 ug/L Total/NA153.9 8260D Vinyl chloride 1.00 ug/L Total/NA11.25 8260D Client Sample ID: MW-18I Lab Sample ID: 280-162293-9 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA16.12 8260D SIM 1,1-Dichloroethane 1.00 ug/L Total/NA19.92 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA16.88 8260D 1,1-Dichloroethene 1.00 ug/L Total/NA14.53 8260D Trichloroethene 1.00 ug/L Total/NA11.37 8260D Vinyl chloride 1.00 ug/L Total/NA13.48 8260D Client Sample ID: MW-19I Lab Sample ID: 280-162293-10 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA131.0 8260D SIM 1,1-Dichloroethane 1.00 ug/L Total/NA132.6 8260D 1,2-Dichloroethane 1.00 ug/L Total/NA17.42 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA11578260D trans-1,2-Dichloroethene 1.00 ug/L Total/NA14.47 8260D 1,1-Dichloroethene 1.00 ug/L Total/NA127.7 8260D 1,4-Dioxane 20.0 ug/L Total/NA139.7 8260D Tetrachloroethene 1.00 ug/L Total/NA113.7 8260D Trichloroethene 1.00 ug/L Total/NA169.0 8260D Vinyl chloride 1.00 ug/L Total/NA112.3 8260D Methane 5.00 ug/L Total/NA1251RSK-175 Iron 100 ug/L Total Recoverable 1171 6010D Manganese 10.0 ug/L Total Recoverable 1289 6010D Manganese 10.0 ug/L Dissolved12716010D Sulfate 25.0 mg/L Total/NA54689056A Total Organic Carbon - Duplicates 1.00 mg/L Total/NA13.52 9060A Client Sample ID: MW-14 Lab Sample ID: 280-162293-11 No Detections. Client Sample ID: MW-14I Lab Sample ID: 280-162293-12 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA116.5 8260D SIM 1,1-Dichloroethane 2.00 ug/L Total/NA233.8 8260D 1,2-Dichloroethane 2.00 ug/L Total/NA25.48 8260D trans-1,2-Dichloroethene 2.00 ug/L Total/NA23.51 8260D 1,1-Dichloroethene 2.00 ug/L Total/NA219.1 8260D Tetrachloroethene 2.00 ug/L Total/NA214.1 8260D Eurofins Denver This Detection Summary does not include radiochemical test results. Page 11 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Client Sample ID: MW-14I (Continued)Lab Sample ID: 280-162293-12 Trichloroethene RL 2.00 ug/L MDLAnalyteResult Qualifier Unit Dil Fac D Method Prep Type Total/NA276.6 8260D Vinyl chloride 2.00 ug/L Total/NA28.33 8260D cis-1,2-Dichloroethene - DL 10.0 ug/L Total/NA10449 H 8260D Methane 5.00 ug/L Total/NA190.6 RSK-175 Iron 100 ug/L Total Recoverable 1222 6010D Manganese 10.0 ug/L Total Recoverable 1361 6010D Manganese 10.0 ug/L Dissolved13126010D Sulfate 25.0 mg/L Total/NA54079056A Total Organic Carbon - Duplicates 1.00 mg/L Total/NA12.98 9060A Client Sample ID: MW-4 Lab Sample ID: 280-162293-13 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.579 8260D SIM 1,1-Dichloroethane 1.00 ug/L Total/NA11.87 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA118.8 8260D Client Sample ID: MW-4I Lab Sample ID: 280-162293-14 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA117.3 8260D SIM Client Sample ID: MW-18I-a Lab Sample ID: 280-162293-15 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA16.07 8260D SIM 1,1-Dichloroethane 1.00 ug/L Total/NA110.6 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA16.94 8260D 1,1-Dichloroethene 1.00 ug/L Total/NA14.56 8260D Trichloroethene 1.00 ug/L Total/NA11.28 8260D Vinyl chloride 1.00 ug/L Total/NA13.36 8260D Client Sample ID: MW-10 Lab Sample ID: 280-162353-1 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.861 8260D SIM 1,1-Dichloroethane 2.00 ug/L Total/NA22.88 8260D cis-1,2-Dichloroethene 2.00 ug/L Total/NA22848260D trans-1,2-Dichloroethene 2.00 ug/L Total/NA29.76 8260D 1,1-Dichloroethene 2.00 ug/L Total/NA23.92 8260D Vinyl chloride 2.00 ug/L Total/NA22.37 8260D Client Sample ID: MW-10I Lab Sample ID: 280-162353-2 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA13.60 8260D SIM 1,1-Dichloroethane 5.00 ug/L Total/NA55.87 8260D cis-1,2-Dichloroethene 5.00 ug/L Total/NA57528260D trans-1,2-Dichloroethene 5.00 ug/L Total/NA528.2 8260D 1,1-Dichloroethene 5.00 ug/L Total/NA514.2 8260D Trichloroethene 5.00 ug/L Total/NA551.7 8260D Eurofins Denver This Detection Summary does not include radiochemical test results. Page 12 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Client Sample ID: MW-12 Lab Sample ID: 280-162353-3 1,1-Dichloroethane RL 1.00 ug/L MDLAnalyteResult Qualifier Unit Dil Fac D Method Prep Type Total/NA11.88 8260D cis-1,2-Dichloroethene 1.00 ug/L Total/NA132.6 8260D trans-1,2-Dichloroethene 1.00 ug/L Total/NA12.00 8260D Vinyl chloride 1.00 ug/L Total/NA15.03 8260D Client Sample ID: MW-12-c Lab Sample ID: 280-162353-4 No Detections. Eurofins Denver This Detection Summary does not include radiochemical test results. Page 13 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Method Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method Method Description LaboratoryProtocol SW8468260DVolatile Organic Compounds by GC/MS TAL DEN SW8465030CPurge and Trap TAL DEN Protocol References: SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: TAL DEN = Eurofins Denver, 4955 Yarrow Street, Arvada, CO 80002, TEL (303)736-0100 Eurofins Denver Page 14 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sample Summary Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Lab Sample ID Client Sample ID Matrix Collected Received 280-162142-1 MW-17I Water 05/09/22 14:35 05/10/22 14:50 280-162142-2 MW-11 Water 05/09/22 15:20 05/10/22 14:50 280-162142-3 MW-11I Water 05/09/22 15:55 05/10/22 14:50 280-162142-4 MW-11I-c Water 05/09/22 16:00 05/10/22 14:50 280-162142-5 MW-5 Water 05/09/22 14:10 05/10/22 14:50 280-162142-6 MW-5I Water 05/09/22 14:55 05/10/22 14:50 280-162142-7 MW-2 Water 05/09/22 16:15 05/10/22 14:50 280-162228-1 MW-3I Water 05/10/22 10:15 05/12/22 14:40 280-162228-2 MW-3 Water 05/10/22 11:05 05/12/22 14:40 280-162228-3 MW-2A Water 05/10/22 12:50 05/12/22 14:40 280-162228-4 MW-2I Water 05/10/22 12:10 05/12/22 14:40 280-162228-5 MW-15 Water 05/10/22 15:20 05/12/22 14:40 280-162228-6 MW-15I Water 05/10/22 13:55 05/12/22 14:40 280-162228-7 MW-7I Water 05/10/22 11:55 05/12/22 14:40 280-162228-8 MW-7 Water 05/10/22 11:20 05/12/22 14:40 280-162228-9 MW-8 Water 05/10/22 14:45 05/12/22 14:40 280-162228-10 MW-8-a Water 05/10/22 14:45 05/12/22 14:40 280-162228-11 B-1 Water 05/10/22 13:40 05/12/22 14:40 280-162228-12 B-3 Water 05/10/22 12:55 05/12/22 14:40 280-162228-13 MW-20I Water 05/10/22 10:30 05/12/22 14:40 280-162228-14 MW-15-c Water 05/10/22 15:30 05/12/22 14:40 280-162293-1 MW-16 Water 05/11/22 10:40 05/12/22 10:20 280-162293-2 MW-16-c Water 05/11/22 16:00 05/12/22 10:20 280-162293-3 MW-6 Water 05/11/22 11:30 05/12/22 10:20 280-162293-4 MW-6I Water 05/11/22 12:00 05/12/22 10:20 280-162293-5 MW-9 Water 05/11/22 15:25 05/12/22 10:20 280-162293-6 MW-9I Water 05/11/22 14:25 05/12/22 10:20 280-162293-7 MW-13 Water 05/11/22 13:25 05/12/22 10:20 280-162293-8 MW-13I Water 05/11/22 12:55 05/12/22 10:20 280-162293-9 MW-18I Water 05/11/22 13:55 05/12/22 10:20 280-162293-10 MW-19I Water 05/11/22 12:25 05/12/22 10:20 280-162293-11 MW-14 Water 05/11/22 11:15 05/12/22 10:20 280-162293-12 MW-14I Water 05/11/22 09:55 05/12/22 10:20 280-162293-13 MW-4 Water 05/11/22 16:45 05/12/22 10:20 280-162293-14 MW-4I Water 05/11/22 16:00 05/12/22 10:20 280-162293-15 MW-18I-a Water 05/11/22 13:55 05/12/22 10:20 280-162353-1 MW-10 Water 05/12/22 10:40 05/13/22 14:55 280-162353-2 MW-10I Water 05/12/22 11:25 05/13/22 14:55 280-162353-3 MW-12 Water 05/12/22 11:50 05/13/22 14:55 280-162353-4 MW-12-c Water 05/12/22 12:30 05/13/22 14:55 Eurofins Denver Page 15 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-162142-1Client Sample ID: MW-17I Matrix: WaterDate Collected: 05/09/22 14:35 Date Received: 05/10/22 14:50 RL MDL 1,4-Dioxane 0.634 J 1.40 0.267 ug/L 05/22/22 02:23 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)122 70 -127 05/22/22 02:23 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162142-2Client Sample ID: MW-11 Matrix: WaterDate Collected: 05/09/22 15:20 Date Received: 05/10/22 14:50 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 02:44 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)120 70 -127 05/22/22 02:44 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162142-3Client Sample ID: MW-11I Matrix: WaterDate Collected: 05/09/22 15:55 Date Received: 05/10/22 14:50 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 03:05 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)118 70 -127 05/22/22 03:05 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162142-4Client Sample ID: MW-11I-c Matrix: WaterDate Collected: 05/09/22 16:00 Date Received: 05/10/22 14:50 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/21/22 21:34 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)113 70 -127 05/21/22 21:34 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162142-5Client Sample ID: MW-5 Matrix: WaterDate Collected: 05/09/22 14:10 Date Received: 05/10/22 14:50 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 03:26 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)119 70 -127 05/22/22 03:26 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162142-6Client Sample ID: MW-5I Matrix: WaterDate Collected: 05/09/22 14:55 Date Received: 05/10/22 14:50 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 03:46 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)121 70 -127 05/22/22 03:46 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 16 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-162142-7Client Sample ID: MW-2 Matrix: WaterDate Collected: 05/09/22 16:15 Date Received: 05/10/22 14:50 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 04:07 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)119 70 -127 05/22/22 04:07 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162228-1Client Sample ID: MW-3I Matrix: WaterDate Collected: 05/10/22 10:15 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 20:33 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)120 70 -127 05/22/22 20:33 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162228-2Client Sample ID: MW-3 Matrix: WaterDate Collected: 05/10/22 11:05 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 20:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)119 70 -127 05/22/22 20:54 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162228-3Client Sample ID: MW-2A Matrix: WaterDate Collected: 05/10/22 12:50 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 21:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)121 70 -127 05/22/22 21:14 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162228-4Client Sample ID: MW-2I Matrix: WaterDate Collected: 05/10/22 12:10 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 21:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)124 70 -127 05/22/22 21:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162228-5Client Sample ID: MW-15 Matrix: WaterDate Collected: 05/10/22 15:20 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 21:56 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)119 70 -127 05/22/22 21:56 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 17 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-162228-6Client Sample ID: MW-15I Matrix: WaterDate Collected: 05/10/22 13:55 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane 3.67 1.40 0.267 ug/L 05/22/22 22:16 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)117 70 -127 05/22/22 22:16 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162228-7Client Sample ID: MW-7I Matrix: WaterDate Collected: 05/10/22 11:55 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 22:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)119 70 -127 05/22/22 22:37 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162228-8Client Sample ID: MW-7 Matrix: WaterDate Collected: 05/10/22 11:20 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 22:58 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)120 70 -127 05/22/22 22:58 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162228-9Client Sample ID: MW-8 Matrix: WaterDate Collected: 05/10/22 14:45 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane 1.58 1.40 0.267 ug/L 05/22/22 23:18 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)120 70 -127 05/22/22 23:18 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162228-10Client Sample ID: MW-8-a Matrix: WaterDate Collected: 05/10/22 14:45 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane 1.57 1.40 0.267 ug/L 05/22/22 23:39 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)120 70 -127 05/22/22 23:39 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162228-11Client Sample ID: B-1 Matrix: WaterDate Collected: 05/10/22 13:40 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane 7.00 1.40 0.267 ug/L 05/22/22 23:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)120 70 -127 05/22/22 23:59 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 18 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-162228-12Client Sample ID: B-3 Matrix: WaterDate Collected: 05/10/22 12:55 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/23/22 00:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)122 70 -127 05/23/22 00:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162228-13Client Sample ID: MW-20I Matrix: WaterDate Collected: 05/10/22 10:30 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/23/22 00:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)122 70 -127 05/23/22 00:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162228-14Client Sample ID: MW-15-c Matrix: WaterDate Collected: 05/10/22 15:30 Date Received: 05/12/22 14:40 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/23/22 01:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)123 70 -127 05/23/22 01:01 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-1Client Sample ID: MW-16 Matrix: WaterDate Collected: 05/11/22 10:40 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane 1.39 J 1.40 0.267 ug/L 05/24/22 00:33 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)119 70 -127 05/24/22 00:33 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-2Client Sample ID: MW-16-c Matrix: WaterDate Collected: 05/11/22 16:00 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/24/22 00:53 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)121 70 -127 05/24/22 00:53 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-3Client Sample ID: MW-6 Matrix: WaterDate Collected: 05/11/22 11:30 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/24/22 01:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)119 70 -127 05/24/22 01:14 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 19 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-162293-4Client Sample ID: MW-6I Matrix: WaterDate Collected: 05/11/22 12:00 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/24/22 01:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)122 70 -127 05/24/22 01:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-5Client Sample ID: MW-9 Matrix: WaterDate Collected: 05/11/22 15:25 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/24/22 01:56 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)120 70 -127 05/24/22 01:56 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-6Client Sample ID: MW-9I Matrix: WaterDate Collected: 05/11/22 14:25 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane 5.84 1.40 0.267 ug/L 05/24/22 02:16 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)114 70 -127 05/24/22 02:16 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-7Client Sample ID: MW-13 Matrix: WaterDate Collected: 05/11/22 13:25 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane 0.597 J F2 1.40 0.267 ug/L 05/23/22 23:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)119 70 -127 05/23/22 23:51 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-8Client Sample ID: MW-13I Matrix: WaterDate Collected: 05/11/22 12:55 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane 3.95 1.40 0.267 ug/L 05/24/22 02:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)117 70 -127 05/24/22 02:37 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-9Client Sample ID: MW-18I Matrix: WaterDate Collected: 05/11/22 13:55 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane 6.12 1.40 0.267 ug/L 05/24/22 02:58 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)122 70 -127 05/24/22 02:58 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 20 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-162293-10Client Sample ID: MW-19I Matrix: WaterDate Collected: 05/11/22 12:25 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane 31.0 1.40 0.267 ug/L 05/24/22 03:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)114 70 -127 05/24/22 03:19 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-11Client Sample ID: MW-14 Matrix: WaterDate Collected: 05/11/22 11:15 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/24/22 00:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)121 70 -127 05/24/22 00:12 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-12Client Sample ID: MW-14I Matrix: WaterDate Collected: 05/11/22 09:55 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane 16.5 1.40 0.267 ug/L 05/23/22 12:47 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)111 70 -127 05/23/22 12:47 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-13Client Sample ID: MW-4 Matrix: WaterDate Collected: 05/11/22 16:45 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane 0.579 J 1.40 0.267 ug/L 05/23/22 13:07 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)120 70 -127 05/23/22 13:07 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-14Client Sample ID: MW-4I Matrix: WaterDate Collected: 05/11/22 16:00 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane 17.3 1.40 0.267 ug/L 05/23/22 13:28 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)120 70 -127 05/23/22 13:28 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162293-15Client Sample ID: MW-18I-a Matrix: WaterDate Collected: 05/11/22 13:55 Date Received: 05/12/22 10:20 RL MDL 1,4-Dioxane 6.07 1.40 0.267 ug/L 05/23/22 13:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)120 70 -127 05/23/22 13:49 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 21 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-162353-1Client Sample ID: MW-10 Matrix: WaterDate Collected: 05/12/22 10:40 Date Received: 05/13/22 14:55 RL MDL 1,4-Dioxane 0.861 J 1.40 0.267 ug/L 05/25/22 13:18 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)121 70 -127 05/25/22 13:18 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162353-2Client Sample ID: MW-10I Matrix: WaterDate Collected: 05/12/22 11:25 Date Received: 05/13/22 14:55 RL MDL 1,4-Dioxane 3.60 1.40 0.267 ug/L 05/25/22 13:39 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)120 70 -127 05/25/22 13:39 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162353-3Client Sample ID: MW-12 Matrix: WaterDate Collected: 05/12/22 11:50 Date Received: 05/13/22 14:55 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/25/22 13:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)123 70 -127 05/25/22 13:59 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-162353-4Client Sample ID: MW-12-c Matrix: WaterDate Collected: 05/12/22 12:30 Date Received: 05/13/22 14:55 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/25/22 14:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)124 70 -127 05/25/22 14:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Method: 8260D - Volatile Organic Compounds by GC/MS Lab Sample ID: 280-162142-1Client Sample ID: MW-17I Matrix: WaterDate Collected: 05/09/22 14:35 Date Received: 05/10/22 14:50 RL MDL Acetone ND 20.0 ug/L 05/21/22 09:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/21/22 09:30 1BenzeneND 2.00 ug/L 05/21/22 09:30 1ChlorobromomethaneND 1.00 ug/L 05/21/22 09:30 1DichlorobromomethaneND 2.00 ug/L 05/21/22 09:30 1BromoformND 10.0 ug/L 05/21/22 09:30 1BromomethaneND 20.0 ug/L 05/21/22 09:30 12-Butanone (MEK)ND 2.00 ug/L 05/21/22 09:30 1Carbon disulfide ND 1.00 ug/L 05/21/22 09:30 1Carbon tetrachloride ND 1.00 ug/L 05/21/22 09:30 1ChlorobenzeneND 1.00 ug/L 05/21/22 09:30 1ChlorodibromomethaneND 4.00 ug/L 05/21/22 09:30 1ChloroethaneND 1.00 ug/L 05/21/22 09:30 1ChloroformND 2.00 ug/L 05/21/22 09:30 1ChloromethaneND Eurofins Denver Page 22 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162142-1Client Sample ID: MW-17I Matrix: WaterDate Collected: 05/09/22 14:35 Date Received: 05/10/22 14:50 RL MDL Cyclohexane ND 1.00 ug/L 05/21/22 09:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 05/21/22 09:30 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/21/22 09:30 11,2-Dichlorobenzene ND 1.00 ug/L 05/21/22 09:30 11,3-Dichlorobenzene ND 1.00 ug/L 05/21/22 09:30 11,4-Dichlorobenzene ND 2.00 ug/L 05/21/22 09:30 1DichlorodifluoromethaneND 1.00 ug/L 05/21/22 09:30 11,1-Dichloroethane ND 1.00 ug/L 05/21/22 09:30 11,2-Dichloroethane ND 1.00 ug/L 05/21/22 09:30 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 09:30 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 09:30 11,1-Dichloroethene ND 1.00 ug/L 05/21/22 09:30 11,2-Dichloropropane ND 1.00 ug/L 05/21/22 09:30 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/21/22 09:30 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/21/22 09:30 11,4-Dioxane ND 1.00 ug/L 05/21/22 09:30 1EthylbenzeneND 5.00 ug/L 05/21/22 09:30 12-Hexanone ND 1.00 ug/L 05/21/22 09:30 1IsopropylbenzeneND 5.00 ug/L 05/21/22 09:30 1Methyl acetate ND 1.00 ug/L 05/21/22 09:30 1MethylcyclohexaneND 5.00 ug/L 05/21/22 09:30 1Methylene Chloride ND 5.00 ug/L 05/21/22 09:30 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/21/22 09:30 1Methyl tert-butyl ether ND 1.00 ug/L 05/21/22 09:30 1StyreneND 1.00 ug/L 05/21/22 09:30 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/21/22 09:30 1TetrachloroetheneND 1.00 ug/L 05/21/22 09:30 1TolueneND 1.00 ug/L 05/21/22 09:30 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/21/22 09:30 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/21/22 09:30 11,1,1-Trichloroethane ND 1.00 ug/L 05/21/22 09:30 11,1,2-Trichloroethane ND 1.00 ug/L 05/21/22 09:30 1TrichloroetheneND 2.00 ug/L 05/21/22 09:30 1TrichlorofluoromethaneND 1.00 ug/L 05/21/22 09:30 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/21/22 09:30 1Vinyl chloride ND 2.00 ug/L 05/21/22 09:30 1m-Xylene & p-Xylene ND 1.00 ug/L 05/21/22 09:30 1o-Xylene ND 5.00 ug/L 05/21/22 09:30 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)98 70 -127 05/21/22 09:30 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)97 05/21/22 09:30 180-125 4-Bromofluorobenzene (Surr)100 05/21/22 09:30 178-120 Dibromofluoromethane (Surr)99 05/21/22 09:30 177-120 Lab Sample ID: 280-162142-2Client Sample ID: MW-11 Matrix: WaterDate Collected: 05/09/22 15:20 Date Received: 05/10/22 14:50 RL MDL Acetone ND 20.0 ug/L 05/21/22 09:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins Denver Page 23 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162142-2Client Sample ID: MW-11 Matrix: WaterDate Collected: 05/09/22 15:20 Date Received: 05/10/22 14:50 RL MDL Benzene ND 1.00 ug/L 05/21/22 09:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.00 ug/L 05/21/22 09:51 1ChlorobromomethaneND 1.00 ug/L 05/21/22 09:51 1DichlorobromomethaneND 2.00 ug/L 05/21/22 09:51 1BromoformND 10.0 ug/L 05/21/22 09:51 1BromomethaneND 20.0 ug/L 05/21/22 09:51 12-Butanone (MEK)ND 2.00 ug/L 05/21/22 09:51 1Carbon disulfide ND 1.00 ug/L 05/21/22 09:51 1Carbon tetrachloride ND 1.00 ug/L 05/21/22 09:51 1ChlorobenzeneND 1.00 ug/L 05/21/22 09:51 1ChlorodibromomethaneND 4.00 ug/L 05/21/22 09:51 1ChloroethaneND 1.00 ug/L 05/21/22 09:51 1ChloroformND 2.00 ug/L 05/21/22 09:51 1ChloromethaneND 1.00 ug/L 05/21/22 09:51 1CyclohexaneND 5.00 ug/L 05/21/22 09:51 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/21/22 09:51 11,2-Dichlorobenzene ND 1.00 ug/L 05/21/22 09:51 11,3-Dichlorobenzene ND 1.00 ug/L 05/21/22 09:51 11,4-Dichlorobenzene ND 2.00 ug/L 05/21/22 09:51 1DichlorodifluoromethaneND 1.00 ug/L 05/21/22 09:51 11,1-Dichloroethane ND 1.00 ug/L 05/21/22 09:51 11,2-Dichloroethane ND 1.00 ug/L 05/21/22 09:51 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 09:51 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 09:51 11,1-Dichloroethene ND 1.00 ug/L 05/21/22 09:51 11,2-Dichloropropane ND 1.00 ug/L 05/21/22 09:51 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/21/22 09:51 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/21/22 09:51 11,4-Dioxane ND 1.00 ug/L 05/21/22 09:51 1EthylbenzeneND 5.00 ug/L 05/21/22 09:51 12-Hexanone ND 1.00 ug/L 05/21/22 09:51 1IsopropylbenzeneND 5.00 ug/L 05/21/22 09:51 1Methyl acetate ND 1.00 ug/L 05/21/22 09:51 1MethylcyclohexaneND 5.00 ug/L 05/21/22 09:51 1Methylene Chloride ND 5.00 ug/L 05/21/22 09:51 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/21/22 09:51 1Methyl tert-butyl ether ND 1.00 ug/L 05/21/22 09:51 1StyreneND 1.00 ug/L 05/21/22 09:51 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/21/22 09:51 1TetrachloroetheneND 1.00 ug/L 05/21/22 09:51 1TolueneND 1.00 ug/L 05/21/22 09:51 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/21/22 09:51 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/21/22 09:51 11,1,1-Trichloroethane ND 1.00 ug/L 05/21/22 09:51 11,1,2-Trichloroethane ND 1.00 ug/L 05/21/22 09:51 1TrichloroetheneND 2.00 ug/L 05/21/22 09:51 1TrichlorofluoromethaneND 1.00 ug/L 05/21/22 09:51 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/21/22 09:51 1Vinyl chloride ND 2.00 ug/L 05/21/22 09:51 1m-Xylene & p-Xylene ND Eurofins Denver Page 24 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162142-2Client Sample ID: MW-11 Matrix: WaterDate Collected: 05/09/22 15:20 Date Received: 05/10/22 14:50 RL MDL o-Xylene ND 1.00 ug/L 05/21/22 09:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 05/21/22 09:51 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)95 70 -127 05/21/22 09:51 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 05/21/22 09:51 180-125 4-Bromofluorobenzene (Surr)99 05/21/22 09:51 178-120 Dibromofluoromethane (Surr)97 05/21/22 09:51 177-120 Lab Sample ID: 280-162142-3Client Sample ID: MW-11I Matrix: WaterDate Collected: 05/09/22 15:55 Date Received: 05/10/22 14:50 RL MDL Acetone ND 20.0 ug/L 05/21/22 10:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/21/22 10:12 1BenzeneND 2.00 ug/L 05/21/22 10:12 1ChlorobromomethaneND 1.00 ug/L 05/21/22 10:12 1DichlorobromomethaneND 2.00 ug/L 05/21/22 10:12 1BromoformND 10.0 ug/L 05/21/22 10:12 1BromomethaneND 20.0 ug/L 05/21/22 10:12 12-Butanone (MEK)ND 2.00 ug/L 05/21/22 10:12 1Carbon disulfide ND 1.00 ug/L 05/21/22 10:12 1Carbon tetrachloride ND 1.00 ug/L 05/21/22 10:12 1ChlorobenzeneND 1.00 ug/L 05/21/22 10:12 1ChlorodibromomethaneND 4.00 ug/L 05/21/22 10:12 1ChloroethaneND 1.00 ug/L 05/21/22 10:12 1ChloroformND 2.00 ug/L 05/21/22 10:12 1ChloromethaneND 1.00 ug/L 05/21/22 10:12 1CyclohexaneND 5.00 ug/L 05/21/22 10:12 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/21/22 10:12 11,2-Dichlorobenzene ND 1.00 ug/L 05/21/22 10:12 11,3-Dichlorobenzene ND 1.00 ug/L 05/21/22 10:12 11,4-Dichlorobenzene ND 2.00 ug/L 05/21/22 10:12 1DichlorodifluoromethaneND 1.00 ug/L 05/21/22 10:12 11,1-Dichloroethane ND 1.00 ug/L 05/21/22 10:12 11,2-Dichloroethane ND 1.00 ug/L 05/21/22 10:12 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 10:12 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 10:12 11,1-Dichloroethene ND 1.00 ug/L 05/21/22 10:12 11,2-Dichloropropane ND 1.00 ug/L 05/21/22 10:12 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/21/22 10:12 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/21/22 10:12 11,4-Dioxane ND 1.00 ug/L 05/21/22 10:12 1EthylbenzeneND 5.00 ug/L 05/21/22 10:12 12-Hexanone ND 1.00 ug/L 05/21/22 10:12 1IsopropylbenzeneND 5.00 ug/L 05/21/22 10:12 1Methyl acetate ND 1.00 ug/L 05/21/22 10:12 1MethylcyclohexaneND 5.00 ug/L 05/21/22 10:12 1Methylene Chloride ND 5.00 ug/L 05/21/22 10:12 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/21/22 10:12 1Methyl tert-butyl ether ND Eurofins Denver Page 25 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162142-3Client Sample ID: MW-11I Matrix: WaterDate Collected: 05/09/22 15:55 Date Received: 05/10/22 14:50 RL MDL Styrene ND 1.00 ug/L 05/21/22 10:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/21/22 10:12 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/21/22 10:12 1TetrachloroetheneND 1.00 ug/L 05/21/22 10:12 1TolueneND 1.00 ug/L 05/21/22 10:12 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/21/22 10:12 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/21/22 10:12 11,1,1-Trichloroethane ND 1.00 ug/L 05/21/22 10:12 11,1,2-Trichloroethane ND 1.00 ug/L 05/21/22 10:12 1TrichloroetheneND 2.00 ug/L 05/21/22 10:12 1TrichlorofluoromethaneND 1.00 ug/L 05/21/22 10:12 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/21/22 10:12 1Vinyl chloride ND 2.00 ug/L 05/21/22 10:12 1m-Xylene & p-Xylene ND 1.00 ug/L 05/21/22 10:12 1o-Xylene ND 5.00 ug/L 05/21/22 10:12 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)99 70 -127 05/21/22 10:12 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)97 05/21/22 10:12 180-125 4-Bromofluorobenzene (Surr)99 05/21/22 10:12 178-120 Dibromofluoromethane (Surr)99 05/21/22 10:12 177-120 Lab Sample ID: 280-162142-4Client Sample ID: MW-11I-c Matrix: WaterDate Collected: 05/09/22 16:00 Date Received: 05/10/22 14:50 RL MDL Acetone ND 20.0 ug/L 05/21/22 10:33 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/21/22 10:33 1BenzeneND 2.00 ug/L 05/21/22 10:33 1ChlorobromomethaneND 1.00 ug/L 05/21/22 10:33 1DichlorobromomethaneND 2.00 ug/L 05/21/22 10:33 1BromoformND 10.0 ug/L 05/21/22 10:33 1BromomethaneND 20.0 ug/L 05/21/22 10:33 12-Butanone (MEK)ND 2.00 ug/L 05/21/22 10:33 1Carbon disulfide ND 1.00 ug/L 05/21/22 10:33 1Carbon tetrachloride ND 1.00 ug/L 05/21/22 10:33 1ChlorobenzeneND 1.00 ug/L 05/21/22 10:33 1ChlorodibromomethaneND 4.00 ug/L 05/21/22 10:33 1ChloroethaneND 1.00 ug/L 05/21/22 10:33 1ChloroformND 2.00 ug/L 05/21/22 10:33 1ChloromethaneND 1.00 ug/L 05/21/22 10:33 1CyclohexaneND 5.00 ug/L 05/21/22 10:33 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/21/22 10:33 11,2-Dichlorobenzene ND 1.00 ug/L 05/21/22 10:33 11,3-Dichlorobenzene ND 1.00 ug/L 05/21/22 10:33 11,4-Dichlorobenzene ND 2.00 ug/L 05/21/22 10:33 1DichlorodifluoromethaneND 1.00 ug/L 05/21/22 10:33 11,1-Dichloroethane ND 1.00 ug/L 05/21/22 10:33 11,2-Dichloroethane ND 1.00 ug/L 05/21/22 10:33 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 10:33 1trans-1,2-Dichloroethene ND Eurofins Denver Page 26 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162142-4Client Sample ID: MW-11I-c Matrix: WaterDate Collected: 05/09/22 16:00 Date Received: 05/10/22 14:50 RL MDL 1,1-Dichloroethene ND 1.00 ug/L 05/21/22 10:33 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/21/22 10:33 11,2-Dichloropropane ND 1.00 ug/L 05/21/22 10:33 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/21/22 10:33 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/21/22 10:33 11,4-Dioxane ND 1.00 ug/L 05/21/22 10:33 1EthylbenzeneND 5.00 ug/L 05/21/22 10:33 12-Hexanone ND 1.00 ug/L 05/21/22 10:33 1IsopropylbenzeneND 5.00 ug/L 05/21/22 10:33 1Methyl acetate ND 1.00 ug/L 05/21/22 10:33 1MethylcyclohexaneND 5.00 ug/L 05/21/22 10:33 1Methylene Chloride ND 5.00 ug/L 05/21/22 10:33 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/21/22 10:33 1Methyl tert-butyl ether ND 1.00 ug/L 05/21/22 10:33 1StyreneND 1.00 ug/L 05/21/22 10:33 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/21/22 10:33 1TetrachloroetheneND 1.00 ug/L 05/21/22 10:33 1TolueneND 1.00 ug/L 05/21/22 10:33 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/21/22 10:33 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/21/22 10:33 11,1,1-Trichloroethane ND 1.00 ug/L 05/21/22 10:33 11,1,2-Trichloroethane ND 1.00 ug/L 05/21/22 10:33 1TrichloroetheneND 2.00 ug/L 05/21/22 10:33 1TrichlorofluoromethaneND 1.00 ug/L 05/21/22 10:33 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/21/22 10:33 1Vinyl chloride ND 2.00 ug/L 05/21/22 10:33 1m-Xylene & p-Xylene ND 1.00 ug/L 05/21/22 10:33 1o-Xylene ND 5.00 ug/L 05/21/22 10:33 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)99 70 -127 05/21/22 10:33 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 05/21/22 10:33 180-125 4-Bromofluorobenzene (Surr)99 05/21/22 10:33 178-120 Dibromofluoromethane (Surr)99 05/21/22 10:33 177-120 Lab Sample ID: 280-162142-5Client Sample ID: MW-5 Matrix: WaterDate Collected: 05/09/22 14:10 Date Received: 05/10/22 14:50 RL MDL Acetone ND 20.0 ug/L 05/21/22 10:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/21/22 10:54 1BenzeneND 2.00 ug/L 05/21/22 10:54 1ChlorobromomethaneND 1.00 ug/L 05/21/22 10:54 1DichlorobromomethaneND 2.00 ug/L 05/21/22 10:54 1BromoformND 10.0 ug/L 05/21/22 10:54 1BromomethaneND 20.0 ug/L 05/21/22 10:54 12-Butanone (MEK)ND 2.00 ug/L 05/21/22 10:54 1Carbon disulfide ND 1.00 ug/L 05/21/22 10:54 1Carbon tetrachloride ND 1.00 ug/L 05/21/22 10:54 1ChlorobenzeneND 1.00 ug/L 05/21/22 10:54 1ChlorodibromomethaneND Eurofins Denver Page 27 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162142-5Client Sample ID: MW-5 Matrix: WaterDate Collected: 05/09/22 14:10 Date Received: 05/10/22 14:50 RL MDL Chloroethane ND 4.00 ug/L 05/21/22 10:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/21/22 10:54 1ChloroformND 2.00 ug/L 05/21/22 10:54 1ChloromethaneND 1.00 ug/L 05/21/22 10:54 1CyclohexaneND 5.00 ug/L 05/21/22 10:54 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/21/22 10:54 11,2-Dichlorobenzene ND 1.00 ug/L 05/21/22 10:54 11,3-Dichlorobenzene ND 1.00 ug/L 05/21/22 10:54 11,4-Dichlorobenzene ND 2.00 ug/L 05/21/22 10:54 1DichlorodifluoromethaneND 1.00 ug/L 05/21/22 10:54 11,1-Dichloroethane ND 1.00 ug/L 05/21/22 10:54 11,2-Dichloroethane ND 1.00 ug/L 05/21/22 10:54 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 10:54 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 10:54 11,1-Dichloroethene ND 1.00 ug/L 05/21/22 10:54 11,2-Dichloropropane ND 1.00 ug/L 05/21/22 10:54 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/21/22 10:54 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/21/22 10:54 11,4-Dioxane ND 1.00 ug/L 05/21/22 10:54 1EthylbenzeneND 5.00 ug/L 05/21/22 10:54 12-Hexanone ND 1.00 ug/L 05/21/22 10:54 1IsopropylbenzeneND 5.00 ug/L 05/21/22 10:54 1Methyl acetate ND 1.00 ug/L 05/21/22 10:54 1MethylcyclohexaneND 5.00 ug/L 05/21/22 10:54 1Methylene Chloride ND 5.00 ug/L 05/21/22 10:54 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/21/22 10:54 1Methyl tert-butyl ether ND 1.00 ug/L 05/21/22 10:54 1StyreneND 1.00 ug/L 05/21/22 10:54 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/21/22 10:54 1TetrachloroetheneND 1.00 ug/L 05/21/22 10:54 1TolueneND 1.00 ug/L 05/21/22 10:54 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/21/22 10:54 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/21/22 10:54 11,1,1-Trichloroethane ND 1.00 ug/L 05/21/22 10:54 11,1,2-Trichloroethane ND 1.00 ug/L 05/21/22 10:54 1TrichloroetheneND 2.00 ug/L 05/21/22 10:54 1TrichlorofluoromethaneND 1.00 ug/L 05/21/22 10:54 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/21/22 10:54 1Vinyl chloride ND 2.00 ug/L 05/21/22 10:54 1m-Xylene & p-Xylene ND 1.00 ug/L 05/21/22 10:54 1o-Xylene ND 5.00 ug/L 05/21/22 10:54 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)100 70 -127 05/21/22 10:54 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)95 05/21/22 10:54 180-125 4-Bromofluorobenzene (Surr)99 05/21/22 10:54 178-120 Dibromofluoromethane (Surr)101 05/21/22 10:54 177-120 Eurofins Denver Page 28 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS Lab Sample ID: 280-162142-6Client Sample ID: MW-5I Matrix: WaterDate Collected: 05/09/22 14:55 Date Received: 05/10/22 14:50 RL MDL Acetone ND 20.0 ug/L 05/21/22 11:15 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/21/22 11:15 1BenzeneND 2.00 ug/L 05/21/22 11:15 1ChlorobromomethaneND 1.00 ug/L 05/21/22 11:15 1DichlorobromomethaneND 2.00 ug/L 05/21/22 11:15 1BromoformND 10.0 ug/L 05/21/22 11:15 1BromomethaneND 20.0 ug/L 05/21/22 11:15 12-Butanone (MEK)ND 2.00 ug/L 05/21/22 11:15 1Carbon disulfide ND 1.00 ug/L 05/21/22 11:15 1Carbon tetrachloride ND 1.00 ug/L 05/21/22 11:15 1ChlorobenzeneND 1.00 ug/L 05/21/22 11:15 1ChlorodibromomethaneND 4.00 ug/L 05/21/22 11:15 1ChloroethaneND 1.00 ug/L 05/21/22 11:15 1ChloroformND 2.00 ug/L 05/21/22 11:15 1ChloromethaneND 1.00 ug/L 05/21/22 11:15 1CyclohexaneND 5.00 ug/L 05/21/22 11:15 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/21/22 11:15 11,2-Dichlorobenzene ND 1.00 ug/L 05/21/22 11:15 11,3-Dichlorobenzene ND 1.00 ug/L 05/21/22 11:15 11,4-Dichlorobenzene ND 2.00 ug/L 05/21/22 11:15 1DichlorodifluoromethaneND 1.00 ug/L 05/21/22 11:15 11,1-Dichloroethane ND 1.00 ug/L 05/21/22 11:15 11,2-Dichloroethane ND 1.00 ug/L 05/21/22 11:15 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 11:15 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 11:15 11,1-Dichloroethene ND 1.00 ug/L 05/21/22 11:15 11,2-Dichloropropane ND 1.00 ug/L 05/21/22 11:15 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/21/22 11:15 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/21/22 11:15 11,4-Dioxane ND 1.00 ug/L 05/21/22 11:15 1EthylbenzeneND 5.00 ug/L 05/21/22 11:15 12-Hexanone ND 1.00 ug/L 05/21/22 11:15 1IsopropylbenzeneND 5.00 ug/L 05/21/22 11:15 1Methyl acetate ND 1.00 ug/L 05/21/22 11:15 1MethylcyclohexaneND 5.00 ug/L 05/21/22 11:15 1Methylene Chloride ND 5.00 ug/L 05/21/22 11:15 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/21/22 11:15 1Methyl tert-butyl ether ND 1.00 ug/L 05/21/22 11:15 1StyreneND 1.00 ug/L 05/21/22 11:15 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/21/22 11:15 1TetrachloroetheneND 1.00 ug/L 05/21/22 11:15 1TolueneND 1.00 ug/L 05/21/22 11:15 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/21/22 11:15 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/21/22 11:15 11,1,1-Trichloroethane ND 1.00 ug/L 05/21/22 11:15 11,1,2-Trichloroethane ND 1.00 ug/L 05/21/22 11:15 1TrichloroetheneND 2.00 ug/L 05/21/22 11:15 1TrichlorofluoromethaneND 1.00 ug/L 05/21/22 11:15 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/21/22 11:15 1Vinyl chloride ND Eurofins Denver Page 29 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162142-6Client Sample ID: MW-5I Matrix: WaterDate Collected: 05/09/22 14:55 Date Received: 05/10/22 14:50 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 05/21/22 11:15 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/21/22 11:15 1o-Xylene ND 5.00 ug/L 05/21/22 11:15 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)96 70 -127 05/21/22 11:15 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)99 05/21/22 11:15 180-125 4-Bromofluorobenzene (Surr)99 05/21/22 11:15 178-120 Dibromofluoromethane (Surr)95 05/21/22 11:15 177-120 Lab Sample ID: 280-162142-7Client Sample ID: MW-2 Matrix: WaterDate Collected: 05/09/22 16:15 Date Received: 05/10/22 14:50 RL MDL Acetone ND 20.0 ug/L 05/21/22 11:36 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/21/22 11:36 1BenzeneND 2.00 ug/L 05/21/22 11:36 1ChlorobromomethaneND 1.00 ug/L 05/21/22 11:36 1DichlorobromomethaneND 2.00 ug/L 05/21/22 11:36 1BromoformND 10.0 ug/L 05/21/22 11:36 1BromomethaneND 20.0 ug/L 05/21/22 11:36 12-Butanone (MEK)ND 2.00 ug/L 05/21/22 11:36 1Carbon disulfide ND 1.00 ug/L 05/21/22 11:36 1Carbon tetrachloride ND 1.00 ug/L 05/21/22 11:36 1ChlorobenzeneND 1.00 ug/L 05/21/22 11:36 1ChlorodibromomethaneND 4.00 ug/L 05/21/22 11:36 1ChloroethaneND 1.00 ug/L 05/21/22 11:36 1ChloroformND 2.00 ug/L 05/21/22 11:36 1ChloromethaneND 1.00 ug/L 05/21/22 11:36 1CyclohexaneND 5.00 ug/L 05/21/22 11:36 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/21/22 11:36 11,2-Dichlorobenzene ND 1.00 ug/L 05/21/22 11:36 11,3-Dichlorobenzene ND 1.00 ug/L 05/21/22 11:36 11,4-Dichlorobenzene ND 2.00 ug/L 05/21/22 11:36 1DichlorodifluoromethaneND 1.00 ug/L 05/21/22 11:36 11,1-Dichloroethane ND 1.00 ug/L 05/21/22 11:36 11,2-Dichloroethane ND 1.00 ug/L 05/21/22 11:36 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 11:36 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 11:36 11,1-Dichloroethene ND 1.00 ug/L 05/21/22 11:36 11,2-Dichloropropane ND 1.00 ug/L 05/21/22 11:36 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/21/22 11:36 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/21/22 11:36 11,4-Dioxane ND 1.00 ug/L 05/21/22 11:36 1EthylbenzeneND 5.00 ug/L 05/21/22 11:36 12-Hexanone ND 1.00 ug/L 05/21/22 11:36 1IsopropylbenzeneND 5.00 ug/L 05/21/22 11:36 1Methyl acetate ND 1.00 ug/L 05/21/22 11:36 1MethylcyclohexaneND 5.00 ug/L 05/21/22 11:36 1Methylene Chloride ND 5.00 ug/L 05/21/22 11:36 14-Methyl-2-pentanone (MIBK)ND Eurofins Denver Page 30 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162142-7Client Sample ID: MW-2 Matrix: WaterDate Collected: 05/09/22 16:15 Date Received: 05/10/22 14:50 RL MDL Methyl tert-butyl ether ND 5.00 ug/L 05/21/22 11:36 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/21/22 11:36 1StyreneND 1.00 ug/L 05/21/22 11:36 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/21/22 11:36 1TetrachloroetheneND 1.00 ug/L 05/21/22 11:36 1TolueneND 1.00 ug/L 05/21/22 11:36 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/21/22 11:36 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/21/22 11:36 11,1,1-Trichloroethane ND 1.00 ug/L 05/21/22 11:36 11,1,2-Trichloroethane ND 1.00 ug/L 05/21/22 11:36 1TrichloroetheneND 2.00 ug/L 05/21/22 11:36 1TrichlorofluoromethaneND 1.00 ug/L 05/21/22 11:36 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/21/22 11:36 1Vinyl chloride ND 2.00 ug/L 05/21/22 11:36 1m-Xylene & p-Xylene ND 1.00 ug/L 05/21/22 11:36 1o-Xylene ND 5.00 ug/L 05/21/22 11:36 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)97 70 -127 05/21/22 11:36 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 05/21/22 11:36 180-125 4-Bromofluorobenzene (Surr)99 05/21/22 11:36 178-120 Dibromofluoromethane (Surr)100 05/21/22 11:36 177-120 Lab Sample ID: 280-162228-1Client Sample ID: MW-3I Matrix: WaterDate Collected: 05/10/22 10:15 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/23/22 20:56 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 20:56 1BenzeneND 2.00 ug/L 05/23/22 20:56 1ChlorobromomethaneND 1.00 ug/L 05/23/22 20:56 1DichlorobromomethaneND 2.00 ug/L 05/23/22 20:56 1BromoformND 10.0 ug/L 05/23/22 20:56 1BromomethaneND 20.0 ug/L 05/23/22 20:56 12-Butanone (MEK)ND 2.00 ug/L 05/23/22 20:56 1Carbon disulfide ND 1.00 ug/L 05/23/22 20:56 1Carbon tetrachloride ND 1.00 ug/L 05/23/22 20:56 1ChlorobenzeneND 1.00 ug/L 05/23/22 20:56 1ChlorodibromomethaneND 4.00 ug/L 05/23/22 20:56 1ChloroethaneND 1.00 ug/L 05/23/22 20:56 1ChloroformND 2.00 ug/L 05/23/22 20:56 1ChloromethaneND 1.00 ug/L 05/23/22 20:56 1CyclohexaneND 5.00 ug/L 05/23/22 20:56 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/23/22 20:56 11,2-Dichlorobenzene ND 1.00 ug/L 05/23/22 20:56 11,3-Dichlorobenzene ND 1.00 ug/L 05/23/22 20:56 11,4-Dichlorobenzene ND 2.00 ug/L 05/23/22 20:56 1DichlorodifluoromethaneND 1.00 ug/L 05/23/22 20:56 11,1-Dichloroethane ND 1.00 ug/L 05/23/22 20:56 11,2-Dichloroethane ND 1.00 ug/L 05/23/22 20:56 1cis-1,2-Dichloroethene ND Eurofins Denver Page 31 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-1Client Sample ID: MW-3I Matrix: WaterDate Collected: 05/10/22 10:15 Date Received: 05/12/22 14:40 RL MDL trans-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 20:56 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 20:56 11,1-Dichloroethene ND 1.00 ug/L 05/23/22 20:56 11,2-Dichloropropane ND 1.00 ug/L 05/23/22 20:56 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/23/22 20:56 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/23/22 20:56 11,4-Dioxane ND 1.00 ug/L 05/23/22 20:56 1EthylbenzeneND 5.00 ug/L 05/23/22 20:56 12-Hexanone ND 1.00 ug/L 05/23/22 20:56 1IsopropylbenzeneND 5.00 ug/L 05/23/22 20:56 1Methyl acetate ND 1.00 ug/L 05/23/22 20:56 1MethylcyclohexaneND 5.00 ug/L 05/23/22 20:56 1Methylene Chloride ND 5.00 ug/L 05/23/22 20:56 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/23/22 20:56 1Methyl tert-butyl ether ND 1.00 ug/L 05/23/22 20:56 1StyreneND 1.00 ug/L 05/23/22 20:56 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/23/22 20:56 1TetrachloroetheneND 1.00 ug/L 05/23/22 20:56 1TolueneND 1.00 ug/L 05/23/22 20:56 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/23/22 20:56 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/23/22 20:56 11,1,1-Trichloroethane ND 1.00 ug/L 05/23/22 20:56 11,1,2-Trichloroethane ND 1.00 ug/L 05/23/22 20:56 1TrichloroetheneND 2.00 ug/L 05/23/22 20:56 1TrichlorofluoromethaneND 1.00 ug/L 05/23/22 20:56 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/23/22 20:56 1Vinyl chloride ND 2.00 ug/L 05/23/22 20:56 1m-Xylene & p-Xylene ND 1.00 ug/L 05/23/22 20:56 1o-Xylene ND 5.00 ug/L 05/23/22 20:56 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)108 70 -127 05/23/22 20:56 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)105 05/23/22 20:56 180-125 4-Bromofluorobenzene (Surr)108 05/23/22 20:56 178-120 Dibromofluoromethane (Surr)100 05/23/22 20:56 177-120 Lab Sample ID: 280-162228-2Client Sample ID: MW-3 Matrix: WaterDate Collected: 05/10/22 11:05 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/23/22 21:17 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 21:17 1BenzeneND 2.00 ug/L 05/23/22 21:17 1ChlorobromomethaneND 1.00 ug/L 05/23/22 21:17 1DichlorobromomethaneND 2.00 ug/L 05/23/22 21:17 1BromoformND 10.0 ug/L 05/23/22 21:17 1BromomethaneND 20.0 ug/L 05/23/22 21:17 12-Butanone (MEK)ND 2.00 ug/L 05/23/22 21:17 1Carbon disulfide ND 1.00 ug/L 05/23/22 21:17 1Carbon tetrachloride ND 1.00 ug/L 05/23/22 21:17 1ChlorobenzeneND Eurofins Denver Page 32 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-2Client Sample ID: MW-3 Matrix: WaterDate Collected: 05/10/22 11:05 Date Received: 05/12/22 14:40 RL MDL Chlorodibromomethane ND 1.00 ug/L 05/23/22 21:17 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4.00 ug/L 05/23/22 21:17 1ChloroethaneND 1.00 ug/L 05/23/22 21:17 1ChloroformND 2.00 ug/L 05/23/22 21:17 1ChloromethaneND 1.00 ug/L 05/23/22 21:17 1CyclohexaneND 5.00 ug/L 05/23/22 21:17 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/23/22 21:17 11,2-Dichlorobenzene ND 1.00 ug/L 05/23/22 21:17 11,3-Dichlorobenzene ND 1.00 ug/L 05/23/22 21:17 11,4-Dichlorobenzene ND 2.00 ug/L 05/23/22 21:17 1DichlorodifluoromethaneND 1.00 ug/L 05/23/22 21:17 11,1-Dichloroethane ND 1.00 ug/L 05/23/22 21:17 11,2-Dichloroethane ND 1.00 ug/L 05/23/22 21:17 1cis-1,2-Dichloroethene 1.30 1.00 ug/L 05/23/22 21:17 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 21:17 11,1-Dichloroethene ND 1.00 ug/L 05/23/22 21:17 11,2-Dichloropropane ND 1.00 ug/L 05/23/22 21:17 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/23/22 21:17 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/23/22 21:17 11,4-Dioxane ND 1.00 ug/L 05/23/22 21:17 1EthylbenzeneND 5.00 ug/L 05/23/22 21:17 12-Hexanone ND 1.00 ug/L 05/23/22 21:17 1IsopropylbenzeneND 5.00 ug/L 05/23/22 21:17 1Methyl acetate ND 1.00 ug/L 05/23/22 21:17 1MethylcyclohexaneND 5.00 ug/L 05/23/22 21:17 1Methylene Chloride ND 5.00 ug/L 05/23/22 21:17 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/23/22 21:17 1Methyl tert-butyl ether ND 1.00 ug/L 05/23/22 21:17 1StyreneND 1.00 ug/L 05/23/22 21:17 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/23/22 21:17 1TetrachloroetheneND 1.00 ug/L 05/23/22 21:17 1TolueneND 1.00 ug/L 05/23/22 21:17 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/23/22 21:17 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/23/22 21:17 11,1,1-Trichloroethane ND 1.00 ug/L 05/23/22 21:17 11,1,2-Trichloroethane ND 1.00 ug/L 05/23/22 21:17 1TrichloroetheneND 2.00 ug/L 05/23/22 21:17 1TrichlorofluoromethaneND 1.00 ug/L 05/23/22 21:17 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/23/22 21:17 1Vinyl chloride ND 2.00 ug/L 05/23/22 21:17 1m-Xylene & p-Xylene ND 1.00 ug/L 05/23/22 21:17 1o-Xylene ND 5.00 ug/L 05/23/22 21:17 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)111 70 -127 05/23/22 21:17 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)106 05/23/22 21:17 180-125 4-Bromofluorobenzene (Surr)109 05/23/22 21:17 178-120 Dibromofluoromethane (Surr)101 05/23/22 21:17 177-120 Eurofins Denver Page 33 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS Lab Sample ID: 280-162228-3Client Sample ID: MW-2A Matrix: WaterDate Collected: 05/10/22 12:50 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/23/22 21:38 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 21:38 1BenzeneND 2.00 ug/L 05/23/22 21:38 1ChlorobromomethaneND 1.00 ug/L 05/23/22 21:38 1DichlorobromomethaneND 2.00 ug/L 05/23/22 21:38 1BromoformND 10.0 ug/L 05/23/22 21:38 1BromomethaneND 20.0 ug/L 05/23/22 21:38 12-Butanone (MEK)ND 2.00 ug/L 05/23/22 21:38 1Carbon disulfide ND 1.00 ug/L 05/23/22 21:38 1Carbon tetrachloride ND 1.00 ug/L 05/23/22 21:38 1ChlorobenzeneND 1.00 ug/L 05/23/22 21:38 1ChlorodibromomethaneND 4.00 ug/L 05/23/22 21:38 1ChloroethaneND 1.00 ug/L 05/23/22 21:38 1ChloroformND 2.00 ug/L 05/23/22 21:38 1ChloromethaneND 1.00 ug/L 05/23/22 21:38 1CyclohexaneND 5.00 ug/L 05/23/22 21:38 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/23/22 21:38 11,2-Dichlorobenzene ND 1.00 ug/L 05/23/22 21:38 11,3-Dichlorobenzene ND 1.00 ug/L 05/23/22 21:38 11,4-Dichlorobenzene ND 2.00 ug/L 05/23/22 21:38 1DichlorodifluoromethaneND 1.00 ug/L 05/23/22 21:38 11,1-Dichloroethane ND 1.00 ug/L 05/23/22 21:38 11,2-Dichloroethane ND 1.00 ug/L 05/23/22 21:38 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 21:38 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 21:38 11,1-Dichloroethene ND 1.00 ug/L 05/23/22 21:38 11,2-Dichloropropane ND 1.00 ug/L 05/23/22 21:38 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/23/22 21:38 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/23/22 21:38 11,4-Dioxane ND 1.00 ug/L 05/23/22 21:38 1EthylbenzeneND 5.00 ug/L 05/23/22 21:38 12-Hexanone ND 1.00 ug/L 05/23/22 21:38 1IsopropylbenzeneND 5.00 ug/L 05/23/22 21:38 1Methyl acetate ND 1.00 ug/L 05/23/22 21:38 1MethylcyclohexaneND 5.00 ug/L 05/23/22 21:38 1Methylene Chloride ND 5.00 ug/L 05/23/22 21:38 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/23/22 21:38 1Methyl tert-butyl ether ND 1.00 ug/L 05/23/22 21:38 1StyreneND 1.00 ug/L 05/23/22 21:38 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/23/22 21:38 1TetrachloroetheneND 1.00 ug/L 05/23/22 21:38 1TolueneND 1.00 ug/L 05/23/22 21:38 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/23/22 21:38 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/23/22 21:38 11,1,1-Trichloroethane ND 1.00 ug/L 05/23/22 21:38 11,1,2-Trichloroethane ND 1.00 ug/L 05/23/22 21:38 1TrichloroetheneND 2.00 ug/L 05/23/22 21:38 1TrichlorofluoromethaneND 1.00 ug/L 05/23/22 21:38 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/23/22 21:38 1Vinyl chloride ND Eurofins Denver Page 34 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-3Client Sample ID: MW-2A Matrix: WaterDate Collected: 05/10/22 12:50 Date Received: 05/12/22 14:40 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 05/23/22 21:38 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 21:38 1o-Xylene ND 5.00 ug/L 05/23/22 21:38 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)108 70 -127 05/23/22 21:38 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)104 05/23/22 21:38 180-125 4-Bromofluorobenzene (Surr)108 05/23/22 21:38 178-120 Dibromofluoromethane (Surr)101 05/23/22 21:38 177-120 Lab Sample ID: 280-162228-4Client Sample ID: MW-2I Matrix: WaterDate Collected: 05/10/22 12:10 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/23/22 21:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 21:59 1BenzeneND 2.00 ug/L 05/23/22 21:59 1ChlorobromomethaneND 1.00 ug/L 05/23/22 21:59 1DichlorobromomethaneND 2.00 ug/L 05/23/22 21:59 1BromoformND 10.0 ug/L 05/23/22 21:59 1BromomethaneND 20.0 ug/L 05/23/22 21:59 12-Butanone (MEK)ND 2.00 ug/L 05/23/22 21:59 1Carbon disulfide ND 1.00 ug/L 05/23/22 21:59 1Carbon tetrachloride ND 1.00 ug/L 05/23/22 21:59 1ChlorobenzeneND 1.00 ug/L 05/23/22 21:59 1ChlorodibromomethaneND 4.00 ug/L 05/23/22 21:59 1ChloroethaneND 1.00 ug/L 05/23/22 21:59 1ChloroformND 2.00 ug/L 05/23/22 21:59 1ChloromethaneND 1.00 ug/L 05/23/22 21:59 1CyclohexaneND 5.00 ug/L 05/23/22 21:59 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/23/22 21:59 11,2-Dichlorobenzene ND 1.00 ug/L 05/23/22 21:59 11,3-Dichlorobenzene ND 1.00 ug/L 05/23/22 21:59 11,4-Dichlorobenzene ND 2.00 ug/L 05/23/22 21:59 1DichlorodifluoromethaneND 1.00 ug/L 05/23/22 21:59 11,1-Dichloroethane ND 1.00 ug/L 05/23/22 21:59 11,2-Dichloroethane 1.02 1.00 ug/L 05/23/22 21:59 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 21:59 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 21:59 11,1-Dichloroethene ND 1.00 ug/L 05/23/22 21:59 11,2-Dichloropropane ND 1.00 ug/L 05/23/22 21:59 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/23/22 21:59 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/23/22 21:59 11,4-Dioxane ND 1.00 ug/L 05/23/22 21:59 1EthylbenzeneND 5.00 ug/L 05/23/22 21:59 12-Hexanone ND 1.00 ug/L 05/23/22 21:59 1IsopropylbenzeneND 5.00 ug/L 05/23/22 21:59 1Methyl acetate ND 1.00 ug/L 05/23/22 21:59 1MethylcyclohexaneND 5.00 ug/L 05/23/22 21:59 1Methylene Chloride ND 5.00 ug/L 05/23/22 21:59 14-Methyl-2-pentanone (MIBK)ND Eurofins Denver Page 35 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-4Client Sample ID: MW-2I Matrix: WaterDate Collected: 05/10/22 12:10 Date Received: 05/12/22 14:40 RL MDL Methyl tert-butyl ether ND 5.00 ug/L 05/23/22 21:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 21:59 1StyreneND 1.00 ug/L 05/23/22 21:59 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/23/22 21:59 1TetrachloroetheneND 1.00 ug/L 05/23/22 21:59 1TolueneND 1.00 ug/L 05/23/22 21:59 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/23/22 21:59 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/23/22 21:59 11,1,1-Trichloroethane ND 1.00 ug/L 05/23/22 21:59 11,1,2-Trichloroethane ND 1.00 ug/L 05/23/22 21:59 1TrichloroetheneND 2.00 ug/L 05/23/22 21:59 1TrichlorofluoromethaneND 1.00 ug/L 05/23/22 21:59 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/23/22 21:59 1Vinyl chloride ND 2.00 ug/L 05/23/22 21:59 1m-Xylene & p-Xylene ND 1.00 ug/L 05/23/22 21:59 1o-Xylene ND 5.00 ug/L 05/23/22 21:59 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)110 70 -127 05/23/22 21:59 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 05/23/22 21:59 180-125 4-Bromofluorobenzene (Surr)107 05/23/22 21:59 178-120 Dibromofluoromethane (Surr)101 05/23/22 21:59 177-120 Lab Sample ID: 280-162228-5Client Sample ID: MW-15 Matrix: WaterDate Collected: 05/10/22 15:20 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/23/22 22:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 22:20 1BenzeneND 2.00 ug/L 05/23/22 22:20 1ChlorobromomethaneND 1.00 ug/L 05/23/22 22:20 1DichlorobromomethaneND 2.00 ug/L 05/23/22 22:20 1BromoformND 10.0 ug/L 05/23/22 22:20 1BromomethaneND 20.0 ug/L 05/23/22 22:20 12-Butanone (MEK)ND 2.00 ug/L 05/23/22 22:20 1Carbon disulfide ND 1.00 ug/L 05/23/22 22:20 1Carbon tetrachloride ND 1.00 ug/L 05/23/22 22:20 1ChlorobenzeneND 1.00 ug/L 05/23/22 22:20 1ChlorodibromomethaneND 4.00 ug/L 05/23/22 22:20 1ChloroethaneND 1.00 ug/L 05/23/22 22:20 1ChloroformND 2.00 ug/L 05/23/22 22:20 1ChloromethaneND 1.00 ug/L 05/23/22 22:20 1CyclohexaneND 5.00 ug/L 05/23/22 22:20 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/23/22 22:20 11,2-Dichlorobenzene ND 1.00 ug/L 05/23/22 22:20 11,3-Dichlorobenzene ND 1.00 ug/L 05/23/22 22:20 11,4-Dichlorobenzene ND 2.00 ug/L 05/23/22 22:20 1DichlorodifluoromethaneND 1.00 ug/L 05/23/22 22:20 11,1-Dichloroethane ND 1.00 ug/L 05/23/22 22:20 11,2-Dichloroethane ND 1.00 ug/L 05/23/22 22:20 1cis-1,2-Dichloroethene 3.14 Eurofins Denver Page 36 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-5Client Sample ID: MW-15 Matrix: WaterDate Collected: 05/10/22 15:20 Date Received: 05/12/22 14:40 RL MDL trans-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 22:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 22:20 11,1-Dichloroethene ND 1.00 ug/L 05/23/22 22:20 11,2-Dichloropropane ND 1.00 ug/L 05/23/22 22:20 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/23/22 22:20 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/23/22 22:20 11,4-Dioxane ND 1.00 ug/L 05/23/22 22:20 1EthylbenzeneND 5.00 ug/L 05/23/22 22:20 12-Hexanone ND 1.00 ug/L 05/23/22 22:20 1IsopropylbenzeneND 5.00 ug/L 05/23/22 22:20 1Methyl acetate ND 1.00 ug/L 05/23/22 22:20 1MethylcyclohexaneND 5.00 ug/L 05/23/22 22:20 1Methylene Chloride ND 5.00 ug/L 05/23/22 22:20 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/23/22 22:20 1Methyl tert-butyl ether ND 1.00 ug/L 05/23/22 22:20 1StyreneND 1.00 ug/L 05/23/22 22:20 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/23/22 22:20 1TetrachloroetheneND 1.00 ug/L 05/23/22 22:20 1TolueneND 1.00 ug/L 05/23/22 22:20 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/23/22 22:20 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/23/22 22:20 11,1,1-Trichloroethane ND 1.00 ug/L 05/23/22 22:20 11,1,2-Trichloroethane ND 1.00 ug/L 05/23/22 22:20 1TrichloroetheneND 2.00 ug/L 05/23/22 22:20 1TrichlorofluoromethaneND 1.00 ug/L 05/23/22 22:20 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/23/22 22:20 1Vinyl chloride ND 2.00 ug/L 05/23/22 22:20 1m-Xylene & p-Xylene ND 1.00 ug/L 05/23/22 22:20 1o-Xylene ND 5.00 ug/L 05/23/22 22:20 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)109 70 -127 05/23/22 22:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)105 05/23/22 22:20 180-125 4-Bromofluorobenzene (Surr)107 05/23/22 22:20 178-120 Dibromofluoromethane (Surr)101 05/23/22 22:20 177-120 Lab Sample ID: 280-162228-6Client Sample ID: MW-15I Matrix: WaterDate Collected: 05/10/22 13:55 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/23/22 22:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 22:42 1BenzeneND 2.00 ug/L 05/23/22 22:42 1ChlorobromomethaneND 1.00 ug/L 05/23/22 22:42 1DichlorobromomethaneND 2.00 ug/L 05/23/22 22:42 1BromoformND 10.0 ug/L 05/23/22 22:42 1BromomethaneND 20.0 ug/L 05/23/22 22:42 12-Butanone (MEK)ND 2.00 ug/L 05/23/22 22:42 1Carbon disulfide ND 1.00 ug/L 05/23/22 22:42 1Carbon tetrachloride ND 1.00 ug/L 05/23/22 22:42 1ChlorobenzeneND Eurofins Denver Page 37 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-6Client Sample ID: MW-15I Matrix: WaterDate Collected: 05/10/22 13:55 Date Received: 05/12/22 14:40 RL MDL Chlorodibromomethane ND 1.00 ug/L 05/23/22 22:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4.00 ug/L 05/23/22 22:42 1ChloroethaneND 1.00 ug/L 05/23/22 22:42 1ChloroformND 2.00 ug/L 05/23/22 22:42 1ChloromethaneND 1.00 ug/L 05/23/22 22:42 1CyclohexaneND 5.00 ug/L 05/23/22 22:42 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/23/22 22:42 11,2-Dichlorobenzene ND 1.00 ug/L 05/23/22 22:42 11,3-Dichlorobenzene ND 1.00 ug/L 05/23/22 22:42 11,4-Dichlorobenzene ND 2.00 ug/L 05/23/22 22:42 1DichlorodifluoromethaneND 1.00 ug/L 05/23/22 22:42 11,1-Dichloroethane 3.53 1.00 ug/L 05/23/22 22:42 11,2-Dichloroethane ND 1.00 ug/L 05/23/22 22:42 1cis-1,2-Dichloroethene 17.5 1.00 ug/L 05/23/22 22:42 1trans-1,2-Dichloroethene 1.09 1.00 ug/L 05/23/22 22:42 11,1-Dichloroethene ND 1.00 ug/L 05/23/22 22:42 11,2-Dichloropropane ND 1.00 ug/L 05/23/22 22:42 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/23/22 22:42 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/23/22 22:42 11,4-Dioxane ND 1.00 ug/L 05/23/22 22:42 1EthylbenzeneND 5.00 ug/L 05/23/22 22:42 12-Hexanone ND 1.00 ug/L 05/23/22 22:42 1IsopropylbenzeneND 5.00 ug/L 05/23/22 22:42 1Methyl acetate ND 1.00 ug/L 05/23/22 22:42 1MethylcyclohexaneND 5.00 ug/L 05/23/22 22:42 1Methylene Chloride ND 5.00 ug/L 05/23/22 22:42 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/23/22 22:42 1Methyl tert-butyl ether ND 1.00 ug/L 05/23/22 22:42 1StyreneND 1.00 ug/L 05/23/22 22:42 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/23/22 22:42 1TetrachloroetheneND 1.00 ug/L 05/23/22 22:42 1TolueneND 1.00 ug/L 05/23/22 22:42 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/23/22 22:42 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/23/22 22:42 11,1,1-Trichloroethane ND 1.00 ug/L 05/23/22 22:42 11,1,2-Trichloroethane ND 1.00 ug/L 05/23/22 22:42 1Trichloroethene1.08 2.00 ug/L 05/23/22 22:42 1TrichlorofluoromethaneND 1.00 ug/L 05/23/22 22:42 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/23/22 22:42 1Vinyl chloride 27.7 2.00 ug/L 05/23/22 22:42 1m-Xylene & p-Xylene ND 1.00 ug/L 05/23/22 22:42 1o-Xylene ND 5.00 ug/L 05/23/22 22:42 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)109 70 -127 05/23/22 22:42 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)106 05/23/22 22:42 180-125 4-Bromofluorobenzene (Surr)106 05/23/22 22:42 178-120 Dibromofluoromethane (Surr)101 05/23/22 22:42 177-120 Eurofins Denver Page 38 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS Lab Sample ID: 280-162228-7Client Sample ID: MW-7I Matrix: WaterDate Collected: 05/10/22 11:55 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/23/22 23:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 23:03 1BenzeneND 2.00 ug/L 05/23/22 23:03 1ChlorobromomethaneND 1.00 ug/L 05/23/22 23:03 1DichlorobromomethaneND 2.00 ug/L 05/23/22 23:03 1BromoformND 10.0 ug/L 05/23/22 23:03 1BromomethaneND 20.0 ug/L 05/23/22 23:03 12-Butanone (MEK)ND 2.00 ug/L 05/23/22 23:03 1Carbon disulfide ND 1.00 ug/L 05/23/22 23:03 1Carbon tetrachloride ND 1.00 ug/L 05/23/22 23:03 1ChlorobenzeneND 1.00 ug/L 05/23/22 23:03 1ChlorodibromomethaneND 4.00 ug/L 05/23/22 23:03 1ChloroethaneND 1.00 ug/L 05/23/22 23:03 1ChloroformND 2.00 ug/L 05/23/22 23:03 1ChloromethaneND 1.00 ug/L 05/23/22 23:03 1CyclohexaneND 5.00 ug/L 05/23/22 23:03 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/23/22 23:03 11,2-Dichlorobenzene ND 1.00 ug/L 05/23/22 23:03 11,3-Dichlorobenzene ND 1.00 ug/L 05/23/22 23:03 11,4-Dichlorobenzene ND 2.00 ug/L 05/23/22 23:03 1DichlorodifluoromethaneND 1.00 ug/L 05/23/22 23:03 11,1-Dichloroethane ND 1.00 ug/L 05/23/22 23:03 11,2-Dichloroethane ND 1.00 ug/L 05/23/22 23:03 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 23:03 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 23:03 11,1-Dichloroethene ND 1.00 ug/L 05/23/22 23:03 11,2-Dichloropropane ND 1.00 ug/L 05/23/22 23:03 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/23/22 23:03 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/23/22 23:03 11,4-Dioxane ND 1.00 ug/L 05/23/22 23:03 1EthylbenzeneND 5.00 ug/L 05/23/22 23:03 12-Hexanone ND 1.00 ug/L 05/23/22 23:03 1IsopropylbenzeneND 5.00 ug/L 05/23/22 23:03 1Methyl acetate ND 1.00 ug/L 05/23/22 23:03 1MethylcyclohexaneND 5.00 ug/L 05/23/22 23:03 1Methylene Chloride ND 5.00 ug/L 05/23/22 23:03 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/23/22 23:03 1Methyl tert-butyl ether ND 1.00 ug/L 05/23/22 23:03 1StyreneND 1.00 ug/L 05/23/22 23:03 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/23/22 23:03 1TetrachloroetheneND 1.00 ug/L 05/23/22 23:03 1TolueneND 1.00 ug/L 05/23/22 23:03 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/23/22 23:03 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/23/22 23:03 11,1,1-Trichloroethane ND 1.00 ug/L 05/23/22 23:03 11,1,2-Trichloroethane ND 1.00 ug/L 05/23/22 23:03 1TrichloroetheneND 2.00 ug/L 05/23/22 23:03 1TrichlorofluoromethaneND 1.00 ug/L 05/23/22 23:03 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/23/22 23:03 1Vinyl chloride ND Eurofins Denver Page 39 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-7Client Sample ID: MW-7I Matrix: WaterDate Collected: 05/10/22 11:55 Date Received: 05/12/22 14:40 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 05/23/22 23:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 23:03 1o-Xylene ND 5.00 ug/L 05/23/22 23:03 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)108 70 -127 05/23/22 23:03 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)104 05/23/22 23:03 180-125 4-Bromofluorobenzene (Surr)107 05/23/22 23:03 178-120 Dibromofluoromethane (Surr)100 05/23/22 23:03 177-120 Lab Sample ID: 280-162228-8Client Sample ID: MW-7 Matrix: WaterDate Collected: 05/10/22 11:20 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/23/22 23:24 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 23:24 1BenzeneND 2.00 ug/L 05/23/22 23:24 1ChlorobromomethaneND 1.00 ug/L 05/23/22 23:24 1DichlorobromomethaneND 2.00 ug/L 05/23/22 23:24 1BromoformND 10.0 ug/L 05/23/22 23:24 1BromomethaneND 20.0 ug/L 05/23/22 23:24 12-Butanone (MEK)ND 2.00 ug/L 05/23/22 23:24 1Carbon disulfide ND 1.00 ug/L 05/23/22 23:24 1Carbon tetrachloride ND 1.00 ug/L 05/23/22 23:24 1ChlorobenzeneND 1.00 ug/L 05/23/22 23:24 1ChlorodibromomethaneND 4.00 ug/L 05/23/22 23:24 1ChloroethaneND 1.00 ug/L 05/23/22 23:24 1ChloroformND 2.00 ug/L 05/23/22 23:24 1ChloromethaneND 1.00 ug/L 05/23/22 23:24 1CyclohexaneND 5.00 ug/L 05/23/22 23:24 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/23/22 23:24 11,2-Dichlorobenzene ND 1.00 ug/L 05/23/22 23:24 11,3-Dichlorobenzene ND 1.00 ug/L 05/23/22 23:24 11,4-Dichlorobenzene ND 2.00 ug/L 05/23/22 23:24 1DichlorodifluoromethaneND 1.00 ug/L 05/23/22 23:24 11,1-Dichloroethane ND 1.00 ug/L 05/23/22 23:24 11,2-Dichloroethane ND 1.00 ug/L 05/23/22 23:24 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 23:24 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 23:24 11,1-Dichloroethene ND 1.00 ug/L 05/23/22 23:24 11,2-Dichloropropane ND 1.00 ug/L 05/23/22 23:24 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/23/22 23:24 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/23/22 23:24 11,4-Dioxane ND 1.00 ug/L 05/23/22 23:24 1EthylbenzeneND 5.00 ug/L 05/23/22 23:24 12-Hexanone ND 1.00 ug/L 05/23/22 23:24 1IsopropylbenzeneND 5.00 ug/L 05/23/22 23:24 1Methyl acetate ND 1.00 ug/L 05/23/22 23:24 1MethylcyclohexaneND 5.00 ug/L 05/23/22 23:24 1Methylene Chloride ND 5.00 ug/L 05/23/22 23:24 14-Methyl-2-pentanone (MIBK)ND Eurofins Denver Page 40 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-8Client Sample ID: MW-7 Matrix: WaterDate Collected: 05/10/22 11:20 Date Received: 05/12/22 14:40 RL MDL Methyl tert-butyl ether ND 5.00 ug/L 05/23/22 23:24 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 23:24 1StyreneND 1.00 ug/L 05/23/22 23:24 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/23/22 23:24 1TetrachloroetheneND 1.00 ug/L 05/23/22 23:24 1TolueneND 1.00 ug/L 05/23/22 23:24 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/23/22 23:24 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/23/22 23:24 11,1,1-Trichloroethane ND 1.00 ug/L 05/23/22 23:24 11,1,2-Trichloroethane ND 1.00 ug/L 05/23/22 23:24 1TrichloroetheneND 2.00 ug/L 05/23/22 23:24 1TrichlorofluoromethaneND 1.00 ug/L 05/23/22 23:24 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/23/22 23:24 1Vinyl chloride ND 2.00 ug/L 05/23/22 23:24 1m-Xylene & p-Xylene ND 1.00 ug/L 05/23/22 23:24 1o-Xylene ND 5.00 ug/L 05/23/22 23:24 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)107 70 -127 05/23/22 23:24 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)107 05/23/22 23:24 180-125 4-Bromofluorobenzene (Surr)106 05/23/22 23:24 178-120 Dibromofluoromethane (Surr)100 05/23/22 23:24 177-120 Lab Sample ID: 280-162228-9Client Sample ID: MW-8 Matrix: WaterDate Collected: 05/10/22 14:45 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/23/22 23:46 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 23:46 1BenzeneND 2.00 ug/L 05/23/22 23:46 1ChlorobromomethaneND 1.00 ug/L 05/23/22 23:46 1DichlorobromomethaneND 2.00 ug/L 05/23/22 23:46 1BromoformND 10.0 ug/L 05/23/22 23:46 1BromomethaneND 20.0 ug/L 05/23/22 23:46 12-Butanone (MEK)ND 2.00 ug/L 05/23/22 23:46 1Carbon disulfide ND 1.00 ug/L 05/23/22 23:46 1Carbon tetrachloride ND 1.00 ug/L 05/23/22 23:46 1ChlorobenzeneND 1.00 ug/L 05/23/22 23:46 1ChlorodibromomethaneND 4.00 ug/L 05/23/22 23:46 1ChloroethaneND 1.00 ug/L 05/23/22 23:46 1ChloroformND 2.00 ug/L 05/23/22 23:46 1ChloromethaneND 1.00 ug/L 05/23/22 23:46 1CyclohexaneND 5.00 ug/L 05/23/22 23:46 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/23/22 23:46 11,2-Dichlorobenzene ND 1.00 ug/L 05/23/22 23:46 11,3-Dichlorobenzene ND 1.00 ug/L 05/23/22 23:46 11,4-Dichlorobenzene ND 2.00 ug/L 05/23/22 23:46 1DichlorodifluoromethaneND 1.00 ug/L 05/23/22 23:46 11,1-Dichloroethane 14.7 1.00 ug/L 05/23/22 23:46 11,2-Dichloroethane 1.97 1.00 ug/L 05/23/22 23:46 1cis-1,2-Dichloroethene 59.2 Eurofins Denver Page 41 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-9Client Sample ID: MW-8 Matrix: WaterDate Collected: 05/10/22 14:45 Date Received: 05/12/22 14:40 RL MDL trans-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 23:46 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/23/22 23:46 11,1-Dichloroethene 3.97 1.00 ug/L 05/23/22 23:46 11,2-Dichloropropane ND 1.00 ug/L 05/23/22 23:46 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/23/22 23:46 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/23/22 23:46 11,4-Dioxane ND 1.00 ug/L 05/23/22 23:46 1EthylbenzeneND 5.00 ug/L 05/23/22 23:46 12-Hexanone ND 1.00 ug/L 05/23/22 23:46 1IsopropylbenzeneND 5.00 ug/L 05/23/22 23:46 1Methyl acetate ND 1.00 ug/L 05/23/22 23:46 1MethylcyclohexaneND 5.00 ug/L 05/23/22 23:46 1Methylene Chloride ND 5.00 ug/L 05/23/22 23:46 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/23/22 23:46 1Methyl tert-butyl ether ND 1.00 ug/L 05/23/22 23:46 1StyreneND 1.00 ug/L 05/23/22 23:46 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/23/22 23:46 1TetrachloroetheneND 1.00 ug/L 05/23/22 23:46 1TolueneND 1.00 ug/L 05/23/22 23:46 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/23/22 23:46 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/23/22 23:46 11,1,1-Trichloroethane ND 1.00 ug/L 05/23/22 23:46 11,1,2-Trichloroethane ND 1.00 ug/L 05/23/22 23:46 1Trichloroethene7.75 2.00 ug/L 05/23/22 23:46 1TrichlorofluoromethaneND 1.00 ug/L 05/23/22 23:46 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/23/22 23:46 1Vinyl chloride 4.44 2.00 ug/L 05/23/22 23:46 1m-Xylene & p-Xylene ND 1.00 ug/L 05/23/22 23:46 1o-Xylene ND 5.00 ug/L 05/23/22 23:46 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)112 70 -127 05/23/22 23:46 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)104 05/23/22 23:46 180-125 4-Bromofluorobenzene (Surr)106 05/23/22 23:46 178-120 Dibromofluoromethane (Surr)102 05/23/22 23:46 177-120 Lab Sample ID: 280-162228-10Client Sample ID: MW-8-a Matrix: WaterDate Collected: 05/10/22 14:45 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/24/22 00:07 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/24/22 00:07 1BenzeneND 2.00 ug/L 05/24/22 00:07 1ChlorobromomethaneND 1.00 ug/L 05/24/22 00:07 1DichlorobromomethaneND 2.00 ug/L 05/24/22 00:07 1BromoformND 10.0 ug/L 05/24/22 00:07 1BromomethaneND 20.0 ug/L 05/24/22 00:07 12-Butanone (MEK)ND 2.00 ug/L 05/24/22 00:07 1Carbon disulfide ND 1.00 ug/L 05/24/22 00:07 1Carbon tetrachloride ND 1.00 ug/L 05/24/22 00:07 1ChlorobenzeneND Eurofins Denver Page 42 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-10Client Sample ID: MW-8-a Matrix: WaterDate Collected: 05/10/22 14:45 Date Received: 05/12/22 14:40 RL MDL Chlorodibromomethane ND 1.00 ug/L 05/24/22 00:07 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4.00 ug/L 05/24/22 00:07 1ChloroethaneND 1.00 ug/L 05/24/22 00:07 1ChloroformND 2.00 ug/L 05/24/22 00:07 1ChloromethaneND 1.00 ug/L 05/24/22 00:07 1CyclohexaneND 5.00 ug/L 05/24/22 00:07 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/24/22 00:07 11,2-Dichlorobenzene ND 1.00 ug/L 05/24/22 00:07 11,3-Dichlorobenzene ND 1.00 ug/L 05/24/22 00:07 11,4-Dichlorobenzene ND 2.00 ug/L 05/24/22 00:07 1DichlorodifluoromethaneND 1.00 ug/L 05/24/22 00:07 11,1-Dichloroethane 14.6 1.00 ug/L 05/24/22 00:07 11,2-Dichloroethane 2.00 1.00 ug/L 05/24/22 00:07 1cis-1,2-Dichloroethene 60.2 1.00 ug/L 05/24/22 00:07 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/24/22 00:07 11,1-Dichloroethene 3.97 1.00 ug/L 05/24/22 00:07 11,2-Dichloropropane ND 1.00 ug/L 05/24/22 00:07 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/24/22 00:07 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/24/22 00:07 11,4-Dioxane ND 1.00 ug/L 05/24/22 00:07 1EthylbenzeneND 5.00 ug/L 05/24/22 00:07 12-Hexanone ND 1.00 ug/L 05/24/22 00:07 1IsopropylbenzeneND 5.00 ug/L 05/24/22 00:07 1Methyl acetate ND 1.00 ug/L 05/24/22 00:07 1MethylcyclohexaneND 5.00 ug/L 05/24/22 00:07 1Methylene Chloride ND 5.00 ug/L 05/24/22 00:07 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/24/22 00:07 1Methyl tert-butyl ether ND 1.00 ug/L 05/24/22 00:07 1StyreneND 1.00 ug/L 05/24/22 00:07 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/24/22 00:07 1TetrachloroetheneND 1.00 ug/L 05/24/22 00:07 1TolueneND 1.00 ug/L 05/24/22 00:07 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/24/22 00:07 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/24/22 00:07 11,1,1-Trichloroethane ND 1.00 ug/L 05/24/22 00:07 11,1,2-Trichloroethane ND 1.00 ug/L 05/24/22 00:07 1Trichloroethene7.96 2.00 ug/L 05/24/22 00:07 1TrichlorofluoromethaneND 1.00 ug/L 05/24/22 00:07 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/24/22 00:07 1Vinyl chloride 4.35 2.00 ug/L 05/24/22 00:07 1m-Xylene & p-Xylene ND 1.00 ug/L 05/24/22 00:07 1o-Xylene ND 5.00 ug/L 05/24/22 00:07 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)108 70 -127 05/24/22 00:07 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)105 05/24/22 00:07 180-125 4-Bromofluorobenzene (Surr)106 05/24/22 00:07 178-120 Dibromofluoromethane (Surr)101 05/24/22 00:07 177-120 Eurofins Denver Page 43 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS Lab Sample ID: 280-162228-11Client Sample ID: B-1 Matrix: WaterDate Collected: 05/10/22 13:40 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/24/22 00:28 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/24/22 00:28 1BenzeneND 2.00 ug/L 05/24/22 00:28 1ChlorobromomethaneND 1.00 ug/L 05/24/22 00:28 1DichlorobromomethaneND 2.00 ug/L 05/24/22 00:28 1BromoformND 10.0 ug/L 05/24/22 00:28 1BromomethaneND 20.0 ug/L 05/24/22 00:28 12-Butanone (MEK)ND 2.00 ug/L 05/24/22 00:28 1Carbon disulfide ND 1.00 ug/L 05/24/22 00:28 1Carbon tetrachloride ND 1.00 ug/L 05/24/22 00:28 1ChlorobenzeneND 1.00 ug/L 05/24/22 00:28 1ChlorodibromomethaneND 4.00 ug/L 05/24/22 00:28 1ChloroethaneND 1.00 ug/L 05/24/22 00:28 1ChloroformND 2.00 ug/L 05/24/22 00:28 1ChloromethaneND 1.00 ug/L 05/24/22 00:28 1CyclohexaneND 5.00 ug/L 05/24/22 00:28 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/24/22 00:28 11,2-Dichlorobenzene 1.85 1.00 ug/L 05/24/22 00:28 11,3-Dichlorobenzene ND 1.00 ug/L 05/24/22 00:28 11,4-Dichlorobenzene ND 2.00 ug/L 05/24/22 00:28 1DichlorodifluoromethaneND 1.00 ug/L 05/24/22 00:28 11,1-Dichloroethane 3.57 1.00 ug/L 05/24/22 00:28 11,2-Dichloroethane 1.60 1.00 ug/L 05/24/22 00:28 1cis-1,2-Dichloroethene 8.37 1.00 ug/L 05/24/22 00:28 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/24/22 00:28 11,1-Dichloroethene 2.00 1.00 ug/L 05/24/22 00:28 11,2-Dichloropropane ND 1.00 ug/L 05/24/22 00:28 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/24/22 00:28 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/24/22 00:28 11,4-Dioxane ND 1.00 ug/L 05/24/22 00:28 1EthylbenzeneND 5.00 ug/L 05/24/22 00:28 12-Hexanone ND 1.00 ug/L 05/24/22 00:28 1IsopropylbenzeneND 5.00 ug/L 05/24/22 00:28 1Methyl acetate ND 1.00 ug/L 05/24/22 00:28 1MethylcyclohexaneND 5.00 ug/L 05/24/22 00:28 1Methylene Chloride ND 5.00 ug/L 05/24/22 00:28 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/24/22 00:28 1Methyl tert-butyl ether ND 1.00 ug/L 05/24/22 00:28 1StyreneND 1.00 ug/L 05/24/22 00:28 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/24/22 00:28 1TetrachloroetheneND 1.00 ug/L 05/24/22 00:28 1TolueneND 1.00 ug/L 05/24/22 00:28 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/24/22 00:28 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/24/22 00:28 11,1,1-Trichloroethane ND 1.00 ug/L 05/24/22 00:28 11,1,2-Trichloroethane ND 1.00 ug/L 05/24/22 00:28 1TrichloroetheneND 2.00 ug/L 05/24/22 00:28 1TrichlorofluoromethaneND 1.00 ug/L 05/24/22 00:28 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/24/22 00:28 1Vinyl chloride ND Eurofins Denver Page 44 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-11Client Sample ID: B-1 Matrix: WaterDate Collected: 05/10/22 13:40 Date Received: 05/12/22 14:40 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 05/24/22 00:28 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/24/22 00:28 1o-Xylene ND 5.00 ug/L 05/24/22 00:28 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)108 70 -127 05/24/22 00:28 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)104 05/24/22 00:28 180-125 4-Bromofluorobenzene (Surr)106 05/24/22 00:28 178-120 Dibromofluoromethane (Surr)101 05/24/22 00:28 177-120 Lab Sample ID: 280-162228-12Client Sample ID: B-3 Matrix: WaterDate Collected: 05/10/22 12:55 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/24/22 00:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/24/22 00:49 1BenzeneND 2.00 ug/L 05/24/22 00:49 1ChlorobromomethaneND 1.00 ug/L 05/24/22 00:49 1DichlorobromomethaneND 2.00 ug/L 05/24/22 00:49 1BromoformND 10.0 ug/L 05/24/22 00:49 1BromomethaneND 20.0 ug/L 05/24/22 00:49 12-Butanone (MEK)ND 2.00 ug/L 05/24/22 00:49 1Carbon disulfide ND 1.00 ug/L 05/24/22 00:49 1Carbon tetrachloride ND 1.00 ug/L 05/24/22 00:49 1ChlorobenzeneND 1.00 ug/L 05/24/22 00:49 1ChlorodibromomethaneND 4.00 ug/L 05/24/22 00:49 1ChloroethaneND 1.00 ug/L 05/24/22 00:49 1ChloroformND 2.00 ug/L 05/24/22 00:49 1ChloromethaneND 1.00 ug/L 05/24/22 00:49 1CyclohexaneND 5.00 ug/L 05/24/22 00:49 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/24/22 00:49 11,2-Dichlorobenzene ND 1.00 ug/L 05/24/22 00:49 11,3-Dichlorobenzene ND 1.00 ug/L 05/24/22 00:49 11,4-Dichlorobenzene ND 2.00 ug/L 05/24/22 00:49 1DichlorodifluoromethaneND 1.00 ug/L 05/24/22 00:49 11,1-Dichloroethane ND 1.00 ug/L 05/24/22 00:49 11,2-Dichloroethane ND 1.00 ug/L 05/24/22 00:49 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/24/22 00:49 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/24/22 00:49 11,1-Dichloroethene ND 1.00 ug/L 05/24/22 00:49 11,2-Dichloropropane ND 1.00 ug/L 05/24/22 00:49 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/24/22 00:49 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/24/22 00:49 11,4-Dioxane ND 1.00 ug/L 05/24/22 00:49 1EthylbenzeneND 5.00 ug/L 05/24/22 00:49 12-Hexanone ND 1.00 ug/L 05/24/22 00:49 1IsopropylbenzeneND 5.00 ug/L 05/24/22 00:49 1Methyl acetate ND 1.00 ug/L 05/24/22 00:49 1MethylcyclohexaneND 5.00 ug/L 05/24/22 00:49 1Methylene Chloride ND 5.00 ug/L 05/24/22 00:49 14-Methyl-2-pentanone (MIBK)ND Eurofins Denver Page 45 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-12Client Sample ID: B-3 Matrix: WaterDate Collected: 05/10/22 12:55 Date Received: 05/12/22 14:40 RL MDL Methyl tert-butyl ether ND 5.00 ug/L 05/24/22 00:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/24/22 00:49 1StyreneND 1.00 ug/L 05/24/22 00:49 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/24/22 00:49 1TetrachloroetheneND 1.00 ug/L 05/24/22 00:49 1TolueneND 1.00 ug/L 05/24/22 00:49 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/24/22 00:49 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/24/22 00:49 11,1,1-Trichloroethane ND 1.00 ug/L 05/24/22 00:49 11,1,2-Trichloroethane ND 1.00 ug/L 05/24/22 00:49 1TrichloroetheneND 2.00 ug/L 05/24/22 00:49 1TrichlorofluoromethaneND 1.00 ug/L 05/24/22 00:49 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/24/22 00:49 1Vinyl chloride ND 2.00 ug/L 05/24/22 00:49 1m-Xylene & p-Xylene ND 1.00 ug/L 05/24/22 00:49 1o-Xylene ND 5.00 ug/L 05/24/22 00:49 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)111 70 -127 05/24/22 00:49 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)105 05/24/22 00:49 180-125 4-Bromofluorobenzene (Surr)109 05/24/22 00:49 178-120 Dibromofluoromethane (Surr)102 05/24/22 00:49 177-120 Lab Sample ID: 280-162228-13Client Sample ID: MW-20I Matrix: WaterDate Collected: 05/10/22 10:30 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/24/22 01:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/24/22 01:10 1BenzeneND 2.00 ug/L 05/24/22 01:10 1ChlorobromomethaneND 1.00 ug/L 05/24/22 01:10 1DichlorobromomethaneND 2.00 ug/L 05/24/22 01:10 1BromoformND 10.0 ug/L 05/24/22 01:10 1BromomethaneND 20.0 ug/L 05/24/22 01:10 12-Butanone (MEK)ND 2.00 ug/L 05/24/22 01:10 1Carbon disulfide ND 1.00 ug/L 05/24/22 01:10 1Carbon tetrachloride ND 1.00 ug/L 05/24/22 01:10 1ChlorobenzeneND 1.00 ug/L 05/24/22 01:10 1ChlorodibromomethaneND 4.00 ug/L 05/24/22 01:10 1ChloroethaneND 1.00 ug/L 05/24/22 01:10 1ChloroformND 2.00 ug/L 05/24/22 01:10 1ChloromethaneND 1.00 ug/L 05/24/22 01:10 1CyclohexaneND 5.00 ug/L 05/24/22 01:10 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/24/22 01:10 11,2-Dichlorobenzene ND 1.00 ug/L 05/24/22 01:10 11,3-Dichlorobenzene ND 1.00 ug/L 05/24/22 01:10 11,4-Dichlorobenzene ND 2.00 ug/L 05/24/22 01:10 1DichlorodifluoromethaneND 1.00 ug/L 05/24/22 01:10 11,1-Dichloroethane ND 1.00 ug/L 05/24/22 01:10 11,2-Dichloroethane ND 1.00 ug/L 05/24/22 01:10 1cis-1,2-Dichloroethene ND Eurofins Denver Page 46 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-13Client Sample ID: MW-20I Matrix: WaterDate Collected: 05/10/22 10:30 Date Received: 05/12/22 14:40 RL MDL trans-1,2-Dichloroethene ND 1.00 ug/L 05/24/22 01:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/24/22 01:10 11,1-Dichloroethene ND 1.00 ug/L 05/24/22 01:10 11,2-Dichloropropane ND 1.00 ug/L 05/24/22 01:10 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/24/22 01:10 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/24/22 01:10 11,4-Dioxane ND 1.00 ug/L 05/24/22 01:10 1EthylbenzeneND 5.00 ug/L 05/24/22 01:10 12-Hexanone ND 1.00 ug/L 05/24/22 01:10 1IsopropylbenzeneND 5.00 ug/L 05/24/22 01:10 1Methyl acetate ND 1.00 ug/L 05/24/22 01:10 1MethylcyclohexaneND 5.00 ug/L 05/24/22 01:10 1Methylene Chloride ND 5.00 ug/L 05/24/22 01:10 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/24/22 01:10 1Methyl tert-butyl ether ND 1.00 ug/L 05/24/22 01:10 1StyreneND 1.00 ug/L 05/24/22 01:10 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/24/22 01:10 1TetrachloroetheneND 1.00 ug/L 05/24/22 01:10 1TolueneND 1.00 ug/L 05/24/22 01:10 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/24/22 01:10 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/24/22 01:10 11,1,1-Trichloroethane ND 1.00 ug/L 05/24/22 01:10 11,1,2-Trichloroethane ND 1.00 ug/L 05/24/22 01:10 1TrichloroetheneND 2.00 ug/L 05/24/22 01:10 1TrichlorofluoromethaneND 1.00 ug/L 05/24/22 01:10 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/24/22 01:10 1Vinyl chloride ND 2.00 ug/L 05/24/22 01:10 1m-Xylene & p-Xylene ND 1.00 ug/L 05/24/22 01:10 1o-Xylene ND 5.00 ug/L 05/24/22 01:10 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)112 70 -127 05/24/22 01:10 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)105 05/24/22 01:10 180-125 4-Bromofluorobenzene (Surr)106 05/24/22 01:10 178-120 Dibromofluoromethane (Surr)101 05/24/22 01:10 177-120 Lab Sample ID: 280-162228-14Client Sample ID: MW-15-c Matrix: WaterDate Collected: 05/10/22 15:30 Date Received: 05/12/22 14:40 RL MDL Acetone ND 20.0 ug/L 05/24/22 01:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/24/22 01:32 1BenzeneND 2.00 ug/L 05/24/22 01:32 1ChlorobromomethaneND 1.00 ug/L 05/24/22 01:32 1DichlorobromomethaneND 2.00 ug/L 05/24/22 01:32 1BromoformND 10.0 ug/L 05/24/22 01:32 1BromomethaneND 20.0 ug/L 05/24/22 01:32 12-Butanone (MEK)ND 2.00 ug/L 05/24/22 01:32 1Carbon disulfide ND 1.00 ug/L 05/24/22 01:32 1Carbon tetrachloride ND 1.00 ug/L 05/24/22 01:32 1ChlorobenzeneND Eurofins Denver Page 47 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162228-14Client Sample ID: MW-15-c Matrix: WaterDate Collected: 05/10/22 15:30 Date Received: 05/12/22 14:40 RL MDL Chlorodibromomethane ND 1.00 ug/L 05/24/22 01:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4.00 ug/L 05/24/22 01:32 1ChloroethaneND 1.00 ug/L 05/24/22 01:32 1ChloroformND 2.00 ug/L 05/24/22 01:32 1ChloromethaneND 1.00 ug/L 05/24/22 01:32 1CyclohexaneND 5.00 ug/L 05/24/22 01:32 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/24/22 01:32 11,2-Dichlorobenzene ND 1.00 ug/L 05/24/22 01:32 11,3-Dichlorobenzene ND 1.00 ug/L 05/24/22 01:32 11,4-Dichlorobenzene ND 2.00 ug/L 05/24/22 01:32 1DichlorodifluoromethaneND 1.00 ug/L 05/24/22 01:32 11,1-Dichloroethane ND 1.00 ug/L 05/24/22 01:32 11,2-Dichloroethane ND 1.00 ug/L 05/24/22 01:32 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/24/22 01:32 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/24/22 01:32 11,1-Dichloroethene ND 1.00 ug/L 05/24/22 01:32 11,2-Dichloropropane ND 1.00 ug/L 05/24/22 01:32 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/24/22 01:32 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/24/22 01:32 11,4-Dioxane ND 1.00 ug/L 05/24/22 01:32 1EthylbenzeneND 5.00 ug/L 05/24/22 01:32 12-Hexanone ND 1.00 ug/L 05/24/22 01:32 1IsopropylbenzeneND 5.00 ug/L 05/24/22 01:32 1Methyl acetate ND 1.00 ug/L 05/24/22 01:32 1MethylcyclohexaneND 5.00 ug/L 05/24/22 01:32 1Methylene Chloride ND 5.00 ug/L 05/24/22 01:32 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/24/22 01:32 1Methyl tert-butyl ether ND 1.00 ug/L 05/24/22 01:32 1StyreneND 1.00 ug/L 05/24/22 01:32 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/24/22 01:32 1TetrachloroetheneND 1.00 ug/L 05/24/22 01:32 1TolueneND 1.00 ug/L 05/24/22 01:32 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/24/22 01:32 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/24/22 01:32 11,1,1-Trichloroethane ND 1.00 ug/L 05/24/22 01:32 11,1,2-Trichloroethane ND 1.00 ug/L 05/24/22 01:32 1TrichloroetheneND 2.00 ug/L 05/24/22 01:32 1TrichlorofluoromethaneND 1.00 ug/L 05/24/22 01:32 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/24/22 01:32 1Vinyl chloride ND 2.00 ug/L 05/24/22 01:32 1m-Xylene & p-Xylene ND 1.00 ug/L 05/24/22 01:32 1o-Xylene ND 5.00 ug/L 05/24/22 01:32 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)110 70 -127 05/24/22 01:32 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)104 05/24/22 01:32 180-125 4-Bromofluorobenzene (Surr)106 05/24/22 01:32 178-120 Dibromofluoromethane (Surr)102 05/24/22 01:32 177-120 Eurofins Denver Page 48 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS Lab Sample ID: 280-162293-1Client Sample ID: MW-16 Matrix: WaterDate Collected: 05/11/22 10:40 Date Received: 05/12/22 10:20 RL MDL Acetone ND 20.0 ug/L 05/24/22 22:57 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/24/22 22:57 1BenzeneND 2.00 ug/L 05/24/22 22:57 1ChlorobromomethaneND 1.00 ug/L 05/24/22 22:57 1DichlorobromomethaneND 2.00 ug/L 05/24/22 22:57 1BromoformND 10.0 ug/L 05/24/22 22:57 1BromomethaneND 20.0 ug/L 05/24/22 22:57 12-Butanone (MEK)ND 2.00 ug/L 05/24/22 22:57 1Carbon disulfide ND 1.00 ug/L 05/24/22 22:57 1Carbon tetrachloride ND 1.00 ug/L 05/24/22 22:57 1ChlorobenzeneND 1.00 ug/L 05/24/22 22:57 1ChlorodibromomethaneND 4.00 ug/L 05/24/22 22:57 1ChloroethaneND 1.00 ug/L 05/24/22 22:57 1ChloroformND 2.00 ug/L 05/24/22 22:57 1ChloromethaneND 1.00 ug/L 05/24/22 22:57 1CyclohexaneND 5.00 ug/L 05/24/22 22:57 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/24/22 22:57 11,2-Dichlorobenzene ND 1.00 ug/L 05/24/22 22:57 11,3-Dichlorobenzene ND 1.00 ug/L 05/24/22 22:57 11,4-Dichlorobenzene ND 2.00 ug/L 05/24/22 22:57 1DichlorodifluoromethaneND 1.00 ug/L 05/24/22 22:57 11,1-Dichloroethane 2.46 1.00 ug/L 05/24/22 22:57 11,2-Dichloroethane ND 1.00 ug/L 05/24/22 22:57 1cis-1,2-Dichloroethene 57.8 1.00 ug/L 05/24/22 22:57 1trans-1,2-Dichloroethene 2.89 1.00 ug/L 05/24/22 22:57 11,1-Dichloroethene ND 1.00 ug/L 05/24/22 22:57 11,2-Dichloropropane ND 1.00 ug/L 05/24/22 22:57 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/24/22 22:57 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/24/22 22:57 11,4-Dioxane ND 1.00 ug/L 05/24/22 22:57 1EthylbenzeneND 5.00 ug/L 05/24/22 22:57 12-Hexanone ND 1.00 ug/L 05/24/22 22:57 1IsopropylbenzeneND 5.00 ug/L 05/24/22 22:57 1Methyl acetate ND 1.00 ug/L 05/24/22 22:57 1MethylcyclohexaneND 5.00 ug/L 05/24/22 22:57 1Methylene Chloride ND 5.00 ug/L 05/24/22 22:57 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/24/22 22:57 1Methyl tert-butyl ether ND 1.00 ug/L 05/24/22 22:57 1StyreneND 1.00 ug/L 05/24/22 22:57 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/24/22 22:57 1TetrachloroetheneND 1.00 ug/L 05/24/22 22:57 1TolueneND 1.00 ug/L 05/24/22 22:57 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/24/22 22:57 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/24/22 22:57 11,1,1-Trichloroethane ND 1.00 ug/L 05/24/22 22:57 11,1,2-Trichloroethane ND 1.00 ug/L 05/24/22 22:57 1TrichloroetheneND 2.00 ug/L 05/24/22 22:57 1TrichlorofluoromethaneND 1.00 ug/L 05/24/22 22:57 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/24/22 22:57 1Vinyl chloride 2.99 Eurofins Denver Page 49 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-1Client Sample ID: MW-16 Matrix: WaterDate Collected: 05/11/22 10:40 Date Received: 05/12/22 10:20 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 05/24/22 22:57 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/24/22 22:57 1o-Xylene ND 5.00 ug/L 05/24/22 22:57 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)99 70 -127 05/24/22 22:57 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 05/24/22 22:57 180-125 4-Bromofluorobenzene (Surr)110 05/24/22 22:57 178-120 Dibromofluoromethane (Surr)101 05/24/22 22:57 177-120 Lab Sample ID: 280-162293-2Client Sample ID: MW-16-c Matrix: WaterDate Collected: 05/11/22 16:00 Date Received: 05/12/22 10:20 RL MDL Acetone ND 40.0 ug/L 05/24/22 23:19 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.00 ug/L 05/24/22 23:19 2BenzeneND 4.00 ug/L 05/24/22 23:19 2ChlorobromomethaneND 2.00 ug/L 05/24/22 23:19 2DichlorobromomethaneND 4.00 ug/L 05/24/22 23:19 2BromoformND 20.0 ug/L 05/24/22 23:19 2BromomethaneND 40.0 ug/L 05/24/22 23:19 22-Butanone (MEK)ND 4.00 ug/L 05/24/22 23:19 2Carbon disulfide ND 2.00 ug/L 05/24/22 23:19 2Carbon tetrachloride ND 2.00 ug/L 05/24/22 23:19 2ChlorobenzeneND 2.00 ug/L 05/24/22 23:19 2ChlorodibromomethaneND 8.00 ug/L 05/24/22 23:19 2ChloroethaneND 2.00 ug/L 05/24/22 23:19 2ChloroformND 4.00 ug/L 05/24/22 23:19 2ChloromethaneND 2.00 ug/L 05/24/22 23:19 2CyclohexaneND 10.0 ug/L 05/24/22 23:19 21,2-Dibromo-3-Chloropropane ND 2.00 ug/L 05/24/22 23:19 21,2-Dichlorobenzene ND 2.00 ug/L 05/24/22 23:19 21,3-Dichlorobenzene ND 2.00 ug/L 05/24/22 23:19 21,4-Dichlorobenzene ND 4.00 ug/L 05/24/22 23:19 2DichlorodifluoromethaneND 2.00 ug/L 05/24/22 23:19 21,1-Dichloroethane ND 2.00 ug/L 05/24/22 23:19 21,2-Dichloroethane ND 2.00 ug/L 05/24/22 23:19 2cis-1,2-Dichloroethene ND 2.00 ug/L 05/24/22 23:19 2trans-1,2-Dichloroethene ND 2.00 ug/L 05/24/22 23:19 21,1-Dichloroethene ND 2.00 ug/L 05/24/22 23:19 21,2-Dichloropropane ND 2.00 ug/L 05/24/22 23:19 2cis-1,3-Dichloropropene ND 2.00 ug/L 05/24/22 23:19 2trans-1,3-Dichloropropene ND 40.0 ug/L 05/24/22 23:19 21,4-Dioxane ND 2.00 ug/L 05/24/22 23:19 2EthylbenzeneND 10.0 ug/L 05/24/22 23:19 22-Hexanone ND 2.00 ug/L 05/24/22 23:19 2IsopropylbenzeneND 10.0 ug/L 05/24/22 23:19 2Methyl acetate ND 2.00 ug/L 05/24/22 23:19 2MethylcyclohexaneND 10.0 ug/L 05/24/22 23:19 2Methylene Chloride ND 10.0 ug/L 05/24/22 23:19 24-Methyl-2-pentanone (MIBK)ND Eurofins Denver Page 50 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-2Client Sample ID: MW-16-c Matrix: WaterDate Collected: 05/11/22 16:00 Date Received: 05/12/22 10:20 RL MDL Methyl tert-butyl ether ND 10.0 ug/L 05/24/22 23:19 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.00 ug/L 05/24/22 23:19 2StyreneND 2.00 ug/L 05/24/22 23:19 21,1,2,2-Tetrachloroethane ND 2.00 ug/L 05/24/22 23:19 2TetrachloroetheneND 2.00 ug/L 05/24/22 23:19 2TolueneND 2.00 ug/L 05/24/22 23:19 21,2,3-Trichlorobenzene ND 2.00 ug/L 05/24/22 23:19 21,2,4-Trichlorobenzene ND 2.00 ug/L 05/24/22 23:19 21,1,1-Trichloroethane ND 2.00 ug/L 05/24/22 23:19 21,1,2-Trichloroethane ND 2.00 ug/L 05/24/22 23:19 2TrichloroetheneND 4.00 ug/L 05/24/22 23:19 2TrichlorofluoromethaneND 2.00 ug/L 05/24/22 23:19 21,1,2-Trichlorotrifluoroethane ND 2.00 ug/L 05/24/22 23:19 2Vinyl chloride ND 4.00 ug/L 05/24/22 23:19 2m-Xylene & p-Xylene ND 2.00 ug/L 05/24/22 23:19 2o-Xylene ND 10.0 ug/L 05/24/22 23:19 21,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)98 70 -127 05/24/22 23:19 2 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 05/24/22 23:19 280-125 4-Bromofluorobenzene (Surr)112 05/24/22 23:19 278-120 Dibromofluoromethane (Surr)99 05/24/22 23:19 277-120 Lab Sample ID: 280-162293-3Client Sample ID: MW-6 Matrix: WaterDate Collected: 05/11/22 11:30 Date Received: 05/12/22 10:20 RL MDL Acetone ND 20.0 ug/L 05/24/22 23:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/24/22 23:40 1BenzeneND 2.00 ug/L 05/24/22 23:40 1ChlorobromomethaneND 1.00 ug/L 05/24/22 23:40 1DichlorobromomethaneND 2.00 ug/L 05/24/22 23:40 1BromoformND 10.0 ug/L 05/24/22 23:40 1BromomethaneND 20.0 ug/L 05/24/22 23:40 12-Butanone (MEK)ND 2.00 ug/L 05/24/22 23:40 1Carbon disulfide ND 1.00 ug/L 05/24/22 23:40 1Carbon tetrachloride ND 1.00 ug/L 05/24/22 23:40 1ChlorobenzeneND 1.00 ug/L 05/24/22 23:40 1ChlorodibromomethaneND 4.00 ug/L 05/24/22 23:40 1ChloroethaneND 1.00 ug/L 05/24/22 23:40 1ChloroformND 2.00 ug/L 05/24/22 23:40 1ChloromethaneND 1.00 ug/L 05/24/22 23:40 1CyclohexaneND 5.00 ug/L 05/24/22 23:40 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/24/22 23:40 11,2-Dichlorobenzene ND 1.00 ug/L 05/24/22 23:40 11,3-Dichlorobenzene ND 1.00 ug/L 05/24/22 23:40 11,4-Dichlorobenzene ND 2.00 ug/L 05/24/22 23:40 1DichlorodifluoromethaneND 1.00 ug/L 05/24/22 23:40 11,1-Dichloroethane 1.01 1.00 ug/L 05/24/22 23:40 11,2-Dichloroethane ND 1.00 ug/L 05/24/22 23:40 1cis-1,2-Dichloroethene 10.4 Eurofins Denver Page 51 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-3Client Sample ID: MW-6 Matrix: WaterDate Collected: 05/11/22 11:30 Date Received: 05/12/22 10:20 RL MDL trans-1,2-Dichloroethene ND 1.00 ug/L 05/24/22 23:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/24/22 23:40 11,1-Dichloroethene ND 1.00 ug/L 05/24/22 23:40 11,2-Dichloropropane ND 1.00 ug/L 05/24/22 23:40 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/24/22 23:40 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/24/22 23:40 11,4-Dioxane ND 1.00 ug/L 05/24/22 23:40 1EthylbenzeneND 5.00 ug/L 05/24/22 23:40 12-Hexanone ND 1.00 ug/L 05/24/22 23:40 1IsopropylbenzeneND 5.00 ug/L 05/24/22 23:40 1Methyl acetate ND 1.00 ug/L 05/24/22 23:40 1MethylcyclohexaneND 5.00 ug/L 05/24/22 23:40 1Methylene Chloride ND 5.00 ug/L 05/24/22 23:40 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/24/22 23:40 1Methyl tert-butyl ether ND 1.00 ug/L 05/24/22 23:40 1StyreneND 1.00 ug/L 05/24/22 23:40 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/24/22 23:40 1TetrachloroetheneND 1.00 ug/L 05/24/22 23:40 1TolueneND 1.00 ug/L 05/24/22 23:40 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/24/22 23:40 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/24/22 23:40 11,1,1-Trichloroethane ND 1.00 ug/L 05/24/22 23:40 11,1,2-Trichloroethane ND 1.00 ug/L 05/24/22 23:40 1Trichloroethene2.44 2.00 ug/L 05/24/22 23:40 1TrichlorofluoromethaneND 1.00 ug/L 05/24/22 23:40 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/24/22 23:40 1Vinyl chloride ND 2.00 ug/L 05/24/22 23:40 1m-Xylene & p-Xylene ND 1.00 ug/L 05/24/22 23:40 1o-Xylene ND 5.00 ug/L 05/24/22 23:40 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)101 70 -127 05/24/22 23:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 05/24/22 23:40 180-125 4-Bromofluorobenzene (Surr)108 05/24/22 23:40 178-120 Dibromofluoromethane (Surr)103 05/24/22 23:40 177-120 Lab Sample ID: 280-162293-4Client Sample ID: MW-6I Matrix: WaterDate Collected: 05/11/22 12:00 Date Received: 05/12/22 10:20 RL MDL Acetone ND 20.0 ug/L 05/25/22 00:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 00:01 1BenzeneND 2.00 ug/L 05/25/22 00:01 1ChlorobromomethaneND 1.00 ug/L 05/25/22 00:01 1DichlorobromomethaneND 2.00 ug/L 05/25/22 00:01 1BromoformND 10.0 ug/L 05/25/22 00:01 1BromomethaneND 20.0 ug/L 05/25/22 00:01 12-Butanone (MEK)ND 2.00 ug/L 05/25/22 00:01 1Carbon disulfide ND 1.00 ug/L 05/25/22 00:01 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 00:01 1ChlorobenzeneND Eurofins Denver Page 52 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-4Client Sample ID: MW-6I Matrix: WaterDate Collected: 05/11/22 12:00 Date Received: 05/12/22 10:20 RL MDL Chlorodibromomethane ND 1.00 ug/L 05/25/22 00:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4.00 ug/L 05/25/22 00:01 1ChloroethaneND 1.00 ug/L 05/25/22 00:01 1ChloroformND 2.00 ug/L 05/25/22 00:01 1ChloromethaneND 1.00 ug/L 05/25/22 00:01 1CyclohexaneND 5.00 ug/L 05/25/22 00:01 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/25/22 00:01 11,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 00:01 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 00:01 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 00:01 1DichlorodifluoromethaneND 1.00 ug/L 05/25/22 00:01 11,1-Dichloroethane ND 1.00 ug/L 05/25/22 00:01 11,2-Dichloroethane ND 1.00 ug/L 05/25/22 00:01 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/25/22 00:01 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/25/22 00:01 11,1-Dichloroethene ND 1.00 ug/L 05/25/22 00:01 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 00:01 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 00:01 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 00:01 11,4-Dioxane ND 1.00 ug/L 05/25/22 00:01 1EthylbenzeneND 5.00 ug/L 05/25/22 00:01 12-Hexanone ND 1.00 ug/L 05/25/22 00:01 1IsopropylbenzeneND 5.00 ug/L 05/25/22 00:01 1Methyl acetate ND 1.00 ug/L 05/25/22 00:01 1MethylcyclohexaneND 5.00 ug/L 05/25/22 00:01 1Methylene Chloride ND 5.00 ug/L 05/25/22 00:01 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/25/22 00:01 1Methyl tert-butyl ether ND 1.00 ug/L 05/25/22 00:01 1StyreneND 1.00 ug/L 05/25/22 00:01 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 00:01 1TetrachloroetheneND 1.00 ug/L 05/25/22 00:01 1TolueneND 1.00 ug/L 05/25/22 00:01 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 00:01 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 00:01 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 00:01 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 00:01 1TrichloroetheneND 2.00 ug/L 05/25/22 00:01 1TrichlorofluoromethaneND 1.00 ug/L 05/25/22 00:01 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 00:01 1Vinyl chloride ND 2.00 ug/L 05/25/22 00:01 1m-Xylene & p-Xylene ND 1.00 ug/L 05/25/22 00:01 1o-Xylene ND 5.00 ug/L 05/25/22 00:01 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)101 70 -127 05/25/22 00:01 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 05/25/22 00:01 180-125 4-Bromofluorobenzene (Surr)109 05/25/22 00:01 178-120 Dibromofluoromethane (Surr)101 05/25/22 00:01 177-120 Eurofins Denver Page 53 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS Lab Sample ID: 280-162293-5Client Sample ID: MW-9 Matrix: WaterDate Collected: 05/11/22 15:25 Date Received: 05/12/22 10:20 RL MDL Acetone ND 20.0 ug/L 05/25/22 00:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 00:22 1BenzeneND 2.00 ug/L 05/25/22 00:22 1ChlorobromomethaneND 1.00 ug/L 05/25/22 00:22 1DichlorobromomethaneND 2.00 ug/L 05/25/22 00:22 1BromoformND 10.0 ug/L 05/25/22 00:22 1BromomethaneND 20.0 ug/L 05/25/22 00:22 12-Butanone (MEK)ND 2.00 ug/L 05/25/22 00:22 1Carbon disulfide ND 1.00 ug/L 05/25/22 00:22 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 00:22 1ChlorobenzeneND 1.00 ug/L 05/25/22 00:22 1ChlorodibromomethaneND 4.00 ug/L 05/25/22 00:22 1ChloroethaneND 1.00 ug/L 05/25/22 00:22 1ChloroformND 2.00 ug/L 05/25/22 00:22 1ChloromethaneND 1.00 ug/L 05/25/22 00:22 1CyclohexaneND 5.00 ug/L 05/25/22 00:22 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/25/22 00:22 11,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 00:22 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 00:22 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 00:22 1DichlorodifluoromethaneND 1.00 ug/L 05/25/22 00:22 11,1-Dichloroethane 1.36 1.00 ug/L 05/25/22 00:22 11,2-Dichloroethane ND 1.00 ug/L 05/25/22 00:22 1cis-1,2-Dichloroethene 95.4 1.00 ug/L 05/25/22 00:22 1trans-1,2-Dichloroethene 2.82 1.00 ug/L 05/25/22 00:22 11,1-Dichloroethene ND 1.00 ug/L 05/25/22 00:22 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 00:22 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 00:22 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 00:22 11,4-Dioxane ND 1.00 ug/L 05/25/22 00:22 1EthylbenzeneND 5.00 ug/L 05/25/22 00:22 12-Hexanone ND 1.00 ug/L 05/25/22 00:22 1IsopropylbenzeneND 5.00 ug/L 05/25/22 00:22 1Methyl acetate ND 1.00 ug/L 05/25/22 00:22 1MethylcyclohexaneND 5.00 ug/L 05/25/22 00:22 1Methylene Chloride ND 5.00 ug/L 05/25/22 00:22 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/25/22 00:22 1Methyl tert-butyl ether ND 1.00 ug/L 05/25/22 00:22 1StyreneND 1.00 ug/L 05/25/22 00:22 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 00:22 1TetrachloroetheneND 1.00 ug/L 05/25/22 00:22 1TolueneND 1.00 ug/L 05/25/22 00:22 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 00:22 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 00:22 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 00:22 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 00:22 1TrichloroetheneND 2.00 ug/L 05/25/22 00:22 1TrichlorofluoromethaneND 1.00 ug/L 05/25/22 00:22 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 00:22 1Vinyl chloride 1.88 Eurofins Denver Page 54 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-5Client Sample ID: MW-9 Matrix: WaterDate Collected: 05/11/22 15:25 Date Received: 05/12/22 10:20 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 05/25/22 00:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 00:22 1o-Xylene ND 5.00 ug/L 05/25/22 00:22 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)101 70 -127 05/25/22 00:22 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 05/25/22 00:22 180-125 4-Bromofluorobenzene (Surr)109 05/25/22 00:22 178-120 Dibromofluoromethane (Surr)101 05/25/22 00:22 177-120 Lab Sample ID: 280-162293-6Client Sample ID: MW-9I Matrix: WaterDate Collected: 05/11/22 14:25 Date Received: 05/12/22 10:20 RL MDL Acetone ND 200 ug/L 05/25/22 00:43 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 10.0 ug/L 05/25/22 00:43 10BenzeneND 20.0 ug/L 05/25/22 00:43 10ChlorobromomethaneND 10.0 ug/L 05/25/22 00:43 10DichlorobromomethaneND 20.0 ug/L 05/25/22 00:43 10BromoformND 100 ug/L 05/25/22 00:43 10BromomethaneND 200 ug/L 05/25/22 00:43 102-Butanone (MEK)ND 20.0 ug/L 05/25/22 00:43 10Carbon disulfide ND 10.0 ug/L 05/25/22 00:43 10Carbon tetrachloride ND 10.0 ug/L 05/25/22 00:43 10ChlorobenzeneND 10.0 ug/L 05/25/22 00:43 10ChlorodibromomethaneND 40.0 ug/L 05/25/22 00:43 10ChloroethaneND 10.0 ug/L 05/25/22 00:43 10ChloroformND 20.0 ug/L 05/25/22 00:43 10ChloromethaneND 10.0 ug/L 05/25/22 00:43 10CyclohexaneND 50.0 ug/L 05/25/22 00:43 101,2-Dibromo-3-Chloropropane ND 10.0 ug/L 05/25/22 00:43 101,2-Dichlorobenzene ND 10.0 ug/L 05/25/22 00:43 101,3-Dichlorobenzene ND 10.0 ug/L 05/25/22 00:43 101,4-Dichlorobenzene ND 20.0 ug/L 05/25/22 00:43 10DichlorodifluoromethaneND 10.0 ug/L 05/25/22 00:43 101,1-Dichloroethane ND 10.0 ug/L 05/25/22 00:43 101,2-Dichloroethane 26.0 10.0 ug/L 05/25/22 00:43 10cis-1,2-Dichloroethene 1360 10.0 ug/L 05/25/22 00:43 10trans-1,2-Dichloroethene 24.2 10.0 ug/L 05/25/22 00:43 101,1-Dichloroethene 24.1 10.0 ug/L 05/25/22 00:43 101,2-Dichloropropane ND 10.0 ug/L 05/25/22 00:43 10cis-1,3-Dichloropropene ND 10.0 ug/L 05/25/22 00:43 10trans-1,3-Dichloropropene ND 200 ug/L 05/25/22 00:43 101,4-Dioxane ND 10.0 ug/L 05/25/22 00:43 10EthylbenzeneND 50.0 ug/L 05/25/22 00:43 102-Hexanone ND 10.0 ug/L 05/25/22 00:43 10IsopropylbenzeneND 50.0 ug/L 05/25/22 00:43 10Methyl acetate ND 10.0 ug/L 05/25/22 00:43 10MethylcyclohexaneND 50.0 ug/L 05/25/22 00:43 10Methylene Chloride ND 50.0 ug/L 05/25/22 00:43 104-Methyl-2-pentanone (MIBK)ND Eurofins Denver Page 55 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-6Client Sample ID: MW-9I Matrix: WaterDate Collected: 05/11/22 14:25 Date Received: 05/12/22 10:20 RL MDL Methyl tert-butyl ether ND 50.0 ug/L 05/25/22 00:43 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 10.0 ug/L 05/25/22 00:43 10StyreneND 10.0 ug/L 05/25/22 00:43 101,1,2,2-Tetrachloroethane ND 10.0 ug/L 05/25/22 00:43 10TetrachloroetheneND 10.0 ug/L 05/25/22 00:43 10TolueneND 10.0 ug/L 05/25/22 00:43 101,2,3-Trichlorobenzene ND 10.0 ug/L 05/25/22 00:43 101,2,4-Trichlorobenzene ND 10.0 ug/L 05/25/22 00:43 101,1,1-Trichloroethane ND 10.0 ug/L 05/25/22 00:43 101,1,2-Trichloroethane ND 10.0 ug/L 05/25/22 00:43 10Trichloroethene130 20.0 ug/L 05/25/22 00:43 10TrichlorofluoromethaneND 10.0 ug/L 05/25/22 00:43 101,1,2-Trichlorotrifluoroethane ND 10.0 ug/L 05/25/22 00:43 10Vinyl chloride ND 20.0 ug/L 05/25/22 00:43 10m-Xylene & p-Xylene ND 10.0 ug/L 05/25/22 00:43 10o-Xylene ND 50.0 ug/L 05/25/22 00:43 101,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)101 70 -127 05/25/22 00:43 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)104 05/25/22 00:43 1080-125 4-Bromofluorobenzene (Surr)109 05/25/22 00:43 1078-120 Dibromofluoromethane (Surr)98 05/25/22 00:43 1077-120 Lab Sample ID: 280-162293-7Client Sample ID: MW-13 Matrix: WaterDate Collected: 05/11/22 13:25 Date Received: 05/12/22 10:20 RL MDL Acetone ND 20.0 ug/L 05/25/22 01:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 01:04 1BenzeneND 2.00 ug/L 05/25/22 01:04 1ChlorobromomethaneND 1.00 ug/L 05/25/22 01:04 1DichlorobromomethaneND 2.00 ug/L 05/25/22 01:04 1BromoformND 10.0 ug/L 05/25/22 01:04 1BromomethaneND 20.0 ug/L 05/25/22 01:04 12-Butanone (MEK)ND 2.00 ug/L 05/25/22 01:04 1Carbon disulfide ND 1.00 ug/L 05/25/22 01:04 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 01:04 1ChlorobenzeneND 1.00 ug/L 05/25/22 01:04 1ChlorodibromomethaneND 4.00 ug/L 05/25/22 01:04 1ChloroethaneND 1.00 ug/L 05/25/22 01:04 1ChloroformND 2.00 ug/L 05/25/22 01:04 1ChloromethaneND 1.00 ug/L 05/25/22 01:04 1CyclohexaneND 5.00 ug/L 05/25/22 01:04 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/25/22 01:04 11,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 01:04 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 01:04 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 01:04 1DichlorodifluoromethaneND 1.00 ug/L 05/25/22 01:04 11,1-Dichloroethane 2.76 1.00 ug/L 05/25/22 01:04 11,2-Dichloroethane ND 1.00 ug/L 05/25/22 01:04 1cis-1,2-Dichloroethene 84.5 F1 Eurofins Denver Page 56 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-7Client Sample ID: MW-13 Matrix: WaterDate Collected: 05/11/22 13:25 Date Received: 05/12/22 10:20 RL MDL trans-1,2-Dichloroethene ND 1.00 ug/L 05/25/22 01:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 01:04 11,1-Dichloroethene 1.21 1.00 ug/L 05/25/22 01:04 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 01:04 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 01:04 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 01:04 11,4-Dioxane ND 1.00 ug/L 05/25/22 01:04 1EthylbenzeneND 5.00 ug/L 05/25/22 01:04 12-Hexanone ND 1.00 ug/L 05/25/22 01:04 1IsopropylbenzeneND 5.00 ug/L 05/25/22 01:04 1Methyl acetate ND 1.00 ug/L 05/25/22 01:04 1MethylcyclohexaneND 5.00 ug/L 05/25/22 01:04 1Methylene Chloride ND 5.00 ug/L 05/25/22 01:04 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/25/22 01:04 1Methyl tert-butyl ether ND 1.00 ug/L 05/25/22 01:04 1StyreneND 1.00 ug/L 05/25/22 01:04 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 01:04 1TetrachloroetheneND 1.00 ug/L 05/25/22 01:04 1TolueneND 1.00 ug/L 05/25/22 01:04 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 01:04 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 01:04 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 01:04 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 01:04 1TrichloroetheneND 2.00 ug/L 05/25/22 01:04 1TrichlorofluoromethaneND 1.00 ug/L 05/25/22 01:04 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 01:04 1Vinyl chloride ND 2.00 ug/L 05/25/22 01:04 1m-Xylene & p-Xylene ND 1.00 ug/L 05/25/22 01:04 1o-Xylene ND 5.00 ug/L 05/25/22 01:04 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)104 70 -127 05/25/22 01:04 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)104 05/25/22 01:04 180-125 4-Bromofluorobenzene (Surr)107 05/25/22 01:04 178-120 Dibromofluoromethane (Surr)101 05/25/22 01:04 177-120 Lab Sample ID: 280-162293-8Client Sample ID: MW-13I Matrix: WaterDate Collected: 05/11/22 12:55 Date Received: 05/12/22 10:20 RL MDL Acetone ND 20.0 ug/L 05/25/22 01:26 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 01:26 1BenzeneND 2.00 ug/L 05/25/22 01:26 1ChlorobromomethaneND 1.00 ug/L 05/25/22 01:26 1DichlorobromomethaneND 2.00 ug/L 05/25/22 01:26 1BromoformND 10.0 ug/L 05/25/22 01:26 1BromomethaneND 20.0 ug/L 05/25/22 01:26 12-Butanone (MEK)ND 2.00 ug/L 05/25/22 01:26 1Carbon disulfide ND 1.00 ug/L 05/25/22 01:26 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 01:26 1ChlorobenzeneND Eurofins Denver Page 57 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-8Client Sample ID: MW-13I Matrix: WaterDate Collected: 05/11/22 12:55 Date Received: 05/12/22 10:20 RL MDL Chlorodibromomethane ND 1.00 ug/L 05/25/22 01:26 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4.00 ug/L 05/25/22 01:26 1ChloroethaneND 1.00 ug/L 05/25/22 01:26 1ChloroformND 2.00 ug/L 05/25/22 01:26 1ChloromethaneND 1.00 ug/L 05/25/22 01:26 1CyclohexaneND 5.00 ug/L 05/25/22 01:26 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/25/22 01:26 11,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 01:26 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 01:26 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 01:26 1DichlorodifluoromethaneND 1.00 ug/L 05/25/22 01:26 11,1-Dichloroethane 9.84 1.00 ug/L 05/25/22 01:26 11,2-Dichloroethane 4.52 1.00 ug/L 05/25/22 01:26 1cis-1,2-Dichloroethene 161 1.00 ug/L 05/25/22 01:26 1trans-1,2-Dichloroethene 16.4 1.00 ug/L 05/25/22 01:26 11,1-Dichloroethene 7.10 1.00 ug/L 05/25/22 01:26 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 01:26 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 01:26 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 01:26 11,4-Dioxane ND 1.00 ug/L 05/25/22 01:26 1EthylbenzeneND 5.00 ug/L 05/25/22 01:26 12-Hexanone ND 1.00 ug/L 05/25/22 01:26 1IsopropylbenzeneND 5.00 ug/L 05/25/22 01:26 1Methyl acetate ND 1.00 ug/L 05/25/22 01:26 1MethylcyclohexaneND 5.00 ug/L 05/25/22 01:26 1Methylene Chloride ND 5.00 ug/L 05/25/22 01:26 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/25/22 01:26 1Methyl tert-butyl ether ND 1.00 ug/L 05/25/22 01:26 1StyreneND 1.00 ug/L 05/25/22 01:26 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 01:26 1Tetrachloroethene18.4 1.00 ug/L 05/25/22 01:26 1TolueneND 1.00 ug/L 05/25/22 01:26 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 01:26 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 01:26 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 01:26 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 01:26 1Trichloroethene53.9 2.00 ug/L 05/25/22 01:26 1TrichlorofluoromethaneND 1.00 ug/L 05/25/22 01:26 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 01:26 1Vinyl chloride 1.25 2.00 ug/L 05/25/22 01:26 1m-Xylene & p-Xylene ND 1.00 ug/L 05/25/22 01:26 1o-Xylene ND 5.00 ug/L 05/25/22 01:26 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)103 70 -127 05/25/22 01:26 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 05/25/22 01:26 180-125 4-Bromofluorobenzene (Surr)110 05/25/22 01:26 178-120 Dibromofluoromethane (Surr)102 05/25/22 01:26 177-120 Eurofins Denver Page 58 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS Lab Sample ID: 280-162293-9Client Sample ID: MW-18I Matrix: WaterDate Collected: 05/11/22 13:55 Date Received: 05/12/22 10:20 RL MDL Acetone ND 20.0 ug/L 05/25/22 01:47 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 01:47 1BenzeneND 2.00 ug/L 05/25/22 01:47 1ChlorobromomethaneND 1.00 ug/L 05/25/22 01:47 1DichlorobromomethaneND 2.00 ug/L 05/25/22 01:47 1BromoformND 10.0 ug/L 05/25/22 01:47 1BromomethaneND 20.0 ug/L 05/25/22 01:47 12-Butanone (MEK)ND 2.00 ug/L 05/25/22 01:47 1Carbon disulfide ND 1.00 ug/L 05/25/22 01:47 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 01:47 1ChlorobenzeneND 1.00 ug/L 05/25/22 01:47 1ChlorodibromomethaneND 4.00 ug/L 05/25/22 01:47 1ChloroethaneND 1.00 ug/L 05/25/22 01:47 1ChloroformND 2.00 ug/L 05/25/22 01:47 1ChloromethaneND 1.00 ug/L 05/25/22 01:47 1CyclohexaneND 5.00 ug/L 05/25/22 01:47 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/25/22 01:47 11,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 01:47 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 01:47 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 01:47 1DichlorodifluoromethaneND 1.00 ug/L 05/25/22 01:47 11,1-Dichloroethane 9.92 1.00 ug/L 05/25/22 01:47 11,2-Dichloroethane ND 1.00 ug/L 05/25/22 01:47 1cis-1,2-Dichloroethene 6.88 1.00 ug/L 05/25/22 01:47 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/25/22 01:47 11,1-Dichloroethene 4.53 1.00 ug/L 05/25/22 01:47 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 01:47 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 01:47 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 01:47 11,4-Dioxane ND 1.00 ug/L 05/25/22 01:47 1EthylbenzeneND 5.00 ug/L 05/25/22 01:47 12-Hexanone ND 1.00 ug/L 05/25/22 01:47 1IsopropylbenzeneND 5.00 ug/L 05/25/22 01:47 1Methyl acetate ND 1.00 ug/L 05/25/22 01:47 1MethylcyclohexaneND 5.00 ug/L 05/25/22 01:47 1Methylene Chloride ND 5.00 ug/L 05/25/22 01:47 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/25/22 01:47 1Methyl tert-butyl ether ND 1.00 ug/L 05/25/22 01:47 1StyreneND 1.00 ug/L 05/25/22 01:47 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 01:47 1TetrachloroetheneND 1.00 ug/L 05/25/22 01:47 1TolueneND 1.00 ug/L 05/25/22 01:47 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 01:47 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 01:47 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 01:47 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 01:47 1Trichloroethene1.37 2.00 ug/L 05/25/22 01:47 1TrichlorofluoromethaneND 1.00 ug/L 05/25/22 01:47 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 01:47 1Vinyl chloride 3.48 Eurofins Denver Page 59 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-9Client Sample ID: MW-18I Matrix: WaterDate Collected: 05/11/22 13:55 Date Received: 05/12/22 10:20 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 05/25/22 01:47 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 01:47 1o-Xylene ND 5.00 ug/L 05/25/22 01:47 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)102 70 -127 05/25/22 01:47 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)104 05/25/22 01:47 180-125 4-Bromofluorobenzene (Surr)110 05/25/22 01:47 178-120 Dibromofluoromethane (Surr)100 05/25/22 01:47 177-120 Lab Sample ID: 280-162293-10Client Sample ID: MW-19I Matrix: WaterDate Collected: 05/11/22 12:25 Date Received: 05/12/22 10:20 RL MDL Acetone ND 20.0 ug/L 05/25/22 02:08 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 02:08 1BenzeneND 2.00 ug/L 05/25/22 02:08 1ChlorobromomethaneND 1.00 ug/L 05/25/22 02:08 1DichlorobromomethaneND 2.00 ug/L 05/25/22 02:08 1BromoformND 10.0 ug/L 05/25/22 02:08 1BromomethaneND 20.0 ug/L 05/25/22 02:08 12-Butanone (MEK)ND 2.00 ug/L 05/25/22 02:08 1Carbon disulfide ND 1.00 ug/L 05/25/22 02:08 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 02:08 1ChlorobenzeneND 1.00 ug/L 05/25/22 02:08 1ChlorodibromomethaneND 4.00 ug/L 05/25/22 02:08 1ChloroethaneND 1.00 ug/L 05/25/22 02:08 1ChloroformND 2.00 ug/L 05/25/22 02:08 1ChloromethaneND 1.00 ug/L 05/25/22 02:08 1CyclohexaneND 5.00 ug/L 05/25/22 02:08 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/25/22 02:08 11,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 02:08 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 02:08 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 02:08 1DichlorodifluoromethaneND 1.00 ug/L 05/25/22 02:08 11,1-Dichloroethane 32.6 1.00 ug/L 05/25/22 02:08 11,2-Dichloroethane 7.42 1.00 ug/L 05/25/22 02:08 1cis-1,2-Dichloroethene 157 1.00 ug/L 05/25/22 02:08 1trans-1,2-Dichloroethene 4.47 1.00 ug/L 05/25/22 02:08 11,1-Dichloroethene 27.7 1.00 ug/L 05/25/22 02:08 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 02:08 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 02:08 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 02:08 11,4-Dioxane 39.7 1.00 ug/L 05/25/22 02:08 1EthylbenzeneND 5.00 ug/L 05/25/22 02:08 12-Hexanone ND 1.00 ug/L 05/25/22 02:08 1IsopropylbenzeneND 5.00 ug/L 05/25/22 02:08 1Methyl acetate ND 1.00 ug/L 05/25/22 02:08 1MethylcyclohexaneND 5.00 ug/L 05/25/22 02:08 1Methylene Chloride ND 5.00 ug/L 05/25/22 02:08 14-Methyl-2-pentanone (MIBK)ND Eurofins Denver Page 60 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-10Client Sample ID: MW-19I Matrix: WaterDate Collected: 05/11/22 12:25 Date Received: 05/12/22 10:20 RL MDL Methyl tert-butyl ether ND 5.00 ug/L 05/25/22 02:08 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 02:08 1StyreneND 1.00 ug/L 05/25/22 02:08 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 02:08 1Tetrachloroethene13.7 1.00 ug/L 05/25/22 02:08 1TolueneND 1.00 ug/L 05/25/22 02:08 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 02:08 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 02:08 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 02:08 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 02:08 1Trichloroethene69.0 2.00 ug/L 05/25/22 02:08 1TrichlorofluoromethaneND 1.00 ug/L 05/25/22 02:08 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 02:08 1Vinyl chloride 12.3 2.00 ug/L 05/25/22 02:08 1m-Xylene & p-Xylene ND 1.00 ug/L 05/25/22 02:08 1o-Xylene ND 5.00 ug/L 05/25/22 02:08 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)102 70 -127 05/25/22 02:08 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 05/25/22 02:08 180-125 4-Bromofluorobenzene (Surr)109 05/25/22 02:08 178-120 Dibromofluoromethane (Surr)100 05/25/22 02:08 177-120 Lab Sample ID: 280-162293-11Client Sample ID: MW-14 Matrix: WaterDate Collected: 05/11/22 11:15 Date Received: 05/12/22 10:20 RL MDL Acetone ND 20.0 ug/L 05/25/22 02:29 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 02:29 1BenzeneND 2.00 ug/L 05/25/22 02:29 1ChlorobromomethaneND 1.00 ug/L 05/25/22 02:29 1DichlorobromomethaneND 2.00 ug/L 05/25/22 02:29 1BromoformND 10.0 ug/L 05/25/22 02:29 1BromomethaneND 20.0 ug/L 05/25/22 02:29 12-Butanone (MEK)ND 2.00 ug/L 05/25/22 02:29 1Carbon disulfide ND 1.00 ug/L 05/25/22 02:29 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 02:29 1ChlorobenzeneND 1.00 ug/L 05/25/22 02:29 1ChlorodibromomethaneND 4.00 ug/L 05/25/22 02:29 1ChloroethaneND 1.00 ug/L 05/25/22 02:29 1ChloroformND 2.00 ug/L 05/25/22 02:29 1ChloromethaneND 1.00 ug/L 05/25/22 02:29 1CyclohexaneND 5.00 ug/L 05/25/22 02:29 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/25/22 02:29 11,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 02:29 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 02:29 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 02:29 1DichlorodifluoromethaneND 1.00 ug/L 05/25/22 02:29 11,1-Dichloroethane ND 1.00 ug/L 05/25/22 02:29 11,2-Dichloroethane ND 1.00 ug/L 05/25/22 02:29 1cis-1,2-Dichloroethene ND Eurofins Denver Page 61 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-11Client Sample ID: MW-14 Matrix: WaterDate Collected: 05/11/22 11:15 Date Received: 05/12/22 10:20 RL MDL trans-1,2-Dichloroethene ND 1.00 ug/L 05/25/22 02:29 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 02:29 11,1-Dichloroethene ND 1.00 ug/L 05/25/22 02:29 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 02:29 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 02:29 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 02:29 11,4-Dioxane ND 1.00 ug/L 05/25/22 02:29 1EthylbenzeneND 5.00 ug/L 05/25/22 02:29 12-Hexanone ND 1.00 ug/L 05/25/22 02:29 1IsopropylbenzeneND 5.00 ug/L 05/25/22 02:29 1Methyl acetate ND 1.00 ug/L 05/25/22 02:29 1MethylcyclohexaneND 5.00 ug/L 05/25/22 02:29 1Methylene Chloride ND 5.00 ug/L 05/25/22 02:29 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/25/22 02:29 1Methyl tert-butyl ether ND 1.00 ug/L 05/25/22 02:29 1StyreneND 1.00 ug/L 05/25/22 02:29 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 02:29 1TetrachloroetheneND 1.00 ug/L 05/25/22 02:29 1TolueneND 1.00 ug/L 05/25/22 02:29 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 02:29 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 02:29 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 02:29 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 02:29 1TrichloroetheneND 2.00 ug/L 05/25/22 02:29 1TrichlorofluoromethaneND 1.00 ug/L 05/25/22 02:29 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 02:29 1Vinyl chloride ND 2.00 ug/L 05/25/22 02:29 1m-Xylene & p-Xylene ND 1.00 ug/L 05/25/22 02:29 1o-Xylene ND 5.00 ug/L 05/25/22 02:29 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)103 70 -127 05/25/22 02:29 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 05/25/22 02:29 180-125 4-Bromofluorobenzene (Surr)109 05/25/22 02:29 178-120 Dibromofluoromethane (Surr)102 05/25/22 02:29 177-120 Lab Sample ID: 280-162293-12Client Sample ID: MW-14I Matrix: WaterDate Collected: 05/11/22 09:55 Date Received: 05/12/22 10:20 RL MDL Acetone ND 40.0 ug/L 05/25/22 02:51 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.00 ug/L 05/25/22 02:51 2BenzeneND 4.00 ug/L 05/25/22 02:51 2ChlorobromomethaneND 2.00 ug/L 05/25/22 02:51 2DichlorobromomethaneND 4.00 ug/L 05/25/22 02:51 2BromoformND 20.0 ug/L 05/25/22 02:51 2BromomethaneND 40.0 ug/L 05/25/22 02:51 22-Butanone (MEK)ND 4.00 ug/L 05/25/22 02:51 2Carbon disulfide ND 2.00 ug/L 05/25/22 02:51 2Carbon tetrachloride ND 2.00 ug/L 05/25/22 02:51 2ChlorobenzeneND Eurofins Denver Page 62 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-12Client Sample ID: MW-14I Matrix: WaterDate Collected: 05/11/22 09:55 Date Received: 05/12/22 10:20 RL MDL Chlorodibromomethane ND 2.00 ug/L 05/25/22 02:51 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 8.00 ug/L 05/25/22 02:51 2ChloroethaneND 2.00 ug/L 05/25/22 02:51 2ChloroformND 4.00 ug/L 05/25/22 02:51 2ChloromethaneND 2.00 ug/L 05/25/22 02:51 2CyclohexaneND 10.0 ug/L 05/25/22 02:51 21,2-Dibromo-3-Chloropropane ND 2.00 ug/L 05/25/22 02:51 21,2-Dichlorobenzene ND 2.00 ug/L 05/25/22 02:51 21,3-Dichlorobenzene ND 2.00 ug/L 05/25/22 02:51 21,4-Dichlorobenzene ND 4.00 ug/L 05/25/22 02:51 2DichlorodifluoromethaneND 2.00 ug/L 05/25/22 02:51 21,1-Dichloroethane 33.8 2.00 ug/L 05/25/22 02:51 21,2-Dichloroethane 5.48 2.00 ug/L 05/25/22 02:51 2trans-1,2-Dichloroethene 3.51 2.00 ug/L 05/25/22 02:51 21,1-Dichloroethene 19.1 2.00 ug/L 05/25/22 02:51 21,2-Dichloropropane ND 2.00 ug/L 05/25/22 02:51 2cis-1,3-Dichloropropene ND 2.00 ug/L 05/25/22 02:51 2trans-1,3-Dichloropropene ND 40.0 ug/L 05/25/22 02:51 21,4-Dioxane ND 2.00 ug/L 05/25/22 02:51 2EthylbenzeneND 10.0 ug/L 05/25/22 02:51 22-Hexanone ND 2.00 ug/L 05/25/22 02:51 2IsopropylbenzeneND 10.0 ug/L 05/25/22 02:51 2Methyl acetate ND 2.00 ug/L 05/25/22 02:51 2MethylcyclohexaneND 10.0 ug/L 05/25/22 02:51 2Methylene Chloride ND 10.0 ug/L 05/25/22 02:51 24-Methyl-2-pentanone (MIBK)ND 10.0 ug/L 05/25/22 02:51 2Methyl tert-butyl ether ND 2.00 ug/L 05/25/22 02:51 2StyreneND 2.00 ug/L 05/25/22 02:51 21,1,2,2-Tetrachloroethane ND 2.00 ug/L 05/25/22 02:51 2Tetrachloroethene14.1 2.00 ug/L 05/25/22 02:51 2TolueneND 2.00 ug/L 05/25/22 02:51 21,2,3-Trichlorobenzene ND 2.00 ug/L 05/25/22 02:51 21,2,4-Trichlorobenzene ND 2.00 ug/L 05/25/22 02:51 21,1,1-Trichloroethane ND 2.00 ug/L 05/25/22 02:51 21,1,2-Trichloroethane ND 2.00 ug/L 05/25/22 02:51 2Trichloroethene76.6 4.00 ug/L 05/25/22 02:51 2TrichlorofluoromethaneND 2.00 ug/L 05/25/22 02:51 21,1,2-Trichlorotrifluoroethane ND 2.00 ug/L 05/25/22 02:51 2Vinyl chloride 8.33 4.00 ug/L 05/25/22 02:51 2m-Xylene & p-Xylene ND 2.00 ug/L 05/25/22 02:51 2o-Xylene ND 10.0 ug/L 05/25/22 02:51 21,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)103 70 -127 05/25/22 02:51 2 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 05/25/22 02:51 280-125 4-Bromofluorobenzene (Surr)109 05/25/22 02:51 278-120 Dibromofluoromethane (Surr)103 05/25/22 02:51 277-120 Eurofins Denver Page 63 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS Lab Sample ID: 280-162293-13Client Sample ID: MW-4 Matrix: WaterDate Collected: 05/11/22 16:45 Date Received: 05/12/22 10:20 RL MDL Acetone ND 20.0 ug/L 05/25/22 03:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 03:12 1BenzeneND 2.00 ug/L 05/25/22 03:12 1ChlorobromomethaneND 1.00 ug/L 05/25/22 03:12 1DichlorobromomethaneND 2.00 ug/L 05/25/22 03:12 1BromoformND 10.0 ug/L 05/25/22 03:12 1BromomethaneND 20.0 ug/L 05/25/22 03:12 12-Butanone (MEK)ND 2.00 ug/L 05/25/22 03:12 1Carbon disulfide ND 1.00 ug/L 05/25/22 03:12 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 03:12 1ChlorobenzeneND 1.00 ug/L 05/25/22 03:12 1ChlorodibromomethaneND 4.00 ug/L 05/25/22 03:12 1ChloroethaneND 1.00 ug/L 05/25/22 03:12 1ChloroformND 2.00 ug/L 05/25/22 03:12 1ChloromethaneND 1.00 ug/L 05/25/22 03:12 1CyclohexaneND 5.00 ug/L 05/25/22 03:12 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/25/22 03:12 11,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 03:12 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 03:12 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 03:12 1DichlorodifluoromethaneND 1.00 ug/L 05/25/22 03:12 11,1-Dichloroethane 1.87 1.00 ug/L 05/25/22 03:12 11,2-Dichloroethane ND 1.00 ug/L 05/25/22 03:12 1cis-1,2-Dichloroethene 18.8 1.00 ug/L 05/25/22 03:12 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/25/22 03:12 11,1-Dichloroethene ND 1.00 ug/L 05/25/22 03:12 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 03:12 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 03:12 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 03:12 11,4-Dioxane ND 1.00 ug/L 05/25/22 03:12 1EthylbenzeneND 5.00 ug/L 05/25/22 03:12 12-Hexanone ND 1.00 ug/L 05/25/22 03:12 1IsopropylbenzeneND 5.00 ug/L 05/25/22 03:12 1Methyl acetate ND 1.00 ug/L 05/25/22 03:12 1MethylcyclohexaneND 5.00 ug/L 05/25/22 03:12 1Methylene Chloride ND 5.00 ug/L 05/25/22 03:12 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/25/22 03:12 1Methyl tert-butyl ether ND 1.00 ug/L 05/25/22 03:12 1StyreneND 1.00 ug/L 05/25/22 03:12 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 03:12 1TetrachloroetheneND 1.00 ug/L 05/25/22 03:12 1TolueneND 1.00 ug/L 05/25/22 03:12 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 03:12 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 03:12 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 03:12 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 03:12 1TrichloroetheneND 2.00 ug/L 05/25/22 03:12 1TrichlorofluoromethaneND 1.00 ug/L 05/25/22 03:12 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 03:12 1Vinyl chloride ND Eurofins Denver Page 64 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-13Client Sample ID: MW-4 Matrix: WaterDate Collected: 05/11/22 16:45 Date Received: 05/12/22 10:20 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 05/25/22 03:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 03:12 1o-Xylene ND 5.00 ug/L 05/25/22 03:12 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)101 70 -127 05/25/22 03:12 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 05/25/22 03:12 180-125 4-Bromofluorobenzene (Surr)110 05/25/22 03:12 178-120 Dibromofluoromethane (Surr)99 05/25/22 03:12 177-120 Lab Sample ID: 280-162293-14Client Sample ID: MW-4I Matrix: WaterDate Collected: 05/11/22 16:00 Date Received: 05/12/22 10:20 RL MDL Acetone ND 20.0 ug/L 05/25/22 03:33 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 03:33 1BenzeneND 2.00 ug/L 05/25/22 03:33 1ChlorobromomethaneND 1.00 ug/L 05/25/22 03:33 1DichlorobromomethaneND 2.00 ug/L 05/25/22 03:33 1BromoformND 10.0 ug/L 05/25/22 03:33 1BromomethaneND 20.0 ug/L 05/25/22 03:33 12-Butanone (MEK)ND 2.00 ug/L 05/25/22 03:33 1Carbon disulfide ND 1.00 ug/L 05/25/22 03:33 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 03:33 1ChlorobenzeneND 1.00 ug/L 05/25/22 03:33 1ChlorodibromomethaneND 4.00 ug/L 05/25/22 03:33 1ChloroethaneND 1.00 ug/L 05/25/22 03:33 1ChloroformND 2.00 ug/L 05/25/22 03:33 1ChloromethaneND 1.00 ug/L 05/25/22 03:33 1CyclohexaneND 5.00 ug/L 05/25/22 03:33 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/25/22 03:33 11,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 03:33 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 03:33 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 03:33 1DichlorodifluoromethaneND 1.00 ug/L 05/25/22 03:33 11,1-Dichloroethane ND 1.00 ug/L 05/25/22 03:33 11,2-Dichloroethane ND 1.00 ug/L 05/25/22 03:33 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/25/22 03:33 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/25/22 03:33 11,1-Dichloroethene ND 1.00 ug/L 05/25/22 03:33 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 03:33 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 03:33 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 03:33 11,4-Dioxane ND 1.00 ug/L 05/25/22 03:33 1EthylbenzeneND 5.00 ug/L 05/25/22 03:33 12-Hexanone ND 1.00 ug/L 05/25/22 03:33 1IsopropylbenzeneND 5.00 ug/L 05/25/22 03:33 1Methyl acetate ND 1.00 ug/L 05/25/22 03:33 1MethylcyclohexaneND 5.00 ug/L 05/25/22 03:33 1Methylene Chloride ND 5.00 ug/L 05/25/22 03:33 14-Methyl-2-pentanone (MIBK)ND Eurofins Denver Page 65 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-14Client Sample ID: MW-4I Matrix: WaterDate Collected: 05/11/22 16:00 Date Received: 05/12/22 10:20 RL MDL Methyl tert-butyl ether ND 5.00 ug/L 05/25/22 03:33 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 03:33 1StyreneND 1.00 ug/L 05/25/22 03:33 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 03:33 1TetrachloroetheneND 1.00 ug/L 05/25/22 03:33 1TolueneND 1.00 ug/L 05/25/22 03:33 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 03:33 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 03:33 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 03:33 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 03:33 1TrichloroetheneND 2.00 ug/L 05/25/22 03:33 1TrichlorofluoromethaneND 1.00 ug/L 05/25/22 03:33 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 03:33 1Vinyl chloride ND 2.00 ug/L 05/25/22 03:33 1m-Xylene & p-Xylene ND 1.00 ug/L 05/25/22 03:33 1o-Xylene ND 5.00 ug/L 05/25/22 03:33 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)100 70 -127 05/25/22 03:33 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 05/25/22 03:33 180-125 4-Bromofluorobenzene (Surr)109 05/25/22 03:33 178-120 Dibromofluoromethane (Surr)101 05/25/22 03:33 177-120 Lab Sample ID: 280-162293-15Client Sample ID: MW-18I-a Matrix: WaterDate Collected: 05/11/22 13:55 Date Received: 05/12/22 10:20 RL MDL Acetone ND 20.0 ug/L 05/25/22 03:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 03:54 1BenzeneND 2.00 ug/L 05/25/22 03:54 1ChlorobromomethaneND 1.00 ug/L 05/25/22 03:54 1DichlorobromomethaneND 2.00 ug/L 05/25/22 03:54 1BromoformND 10.0 ug/L 05/25/22 03:54 1BromomethaneND 20.0 ug/L 05/25/22 03:54 12-Butanone (MEK)ND 2.00 ug/L 05/25/22 03:54 1Carbon disulfide ND 1.00 ug/L 05/25/22 03:54 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 03:54 1ChlorobenzeneND 1.00 ug/L 05/25/22 03:54 1ChlorodibromomethaneND 4.00 ug/L 05/25/22 03:54 1ChloroethaneND 1.00 ug/L 05/25/22 03:54 1ChloroformND 2.00 ug/L 05/25/22 03:54 1ChloromethaneND 1.00 ug/L 05/25/22 03:54 1CyclohexaneND 5.00 ug/L 05/25/22 03:54 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/25/22 03:54 11,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 03:54 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 03:54 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 03:54 1DichlorodifluoromethaneND 1.00 ug/L 05/25/22 03:54 11,1-Dichloroethane 10.6 1.00 ug/L 05/25/22 03:54 11,2-Dichloroethane ND 1.00 ug/L 05/25/22 03:54 1cis-1,2-Dichloroethene 6.94 Eurofins Denver Page 66 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162293-15Client Sample ID: MW-18I-a Matrix: WaterDate Collected: 05/11/22 13:55 Date Received: 05/12/22 10:20 RL MDL trans-1,2-Dichloroethene ND 1.00 ug/L 05/25/22 03:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 03:54 11,1-Dichloroethene 4.56 1.00 ug/L 05/25/22 03:54 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 03:54 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 03:54 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 03:54 11,4-Dioxane ND 1.00 ug/L 05/25/22 03:54 1EthylbenzeneND 5.00 ug/L 05/25/22 03:54 12-Hexanone ND 1.00 ug/L 05/25/22 03:54 1IsopropylbenzeneND 5.00 ug/L 05/25/22 03:54 1Methyl acetate ND 1.00 ug/L 05/25/22 03:54 1MethylcyclohexaneND 5.00 ug/L 05/25/22 03:54 1Methylene Chloride ND 5.00 ug/L 05/25/22 03:54 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/25/22 03:54 1Methyl tert-butyl ether ND 1.00 ug/L 05/25/22 03:54 1StyreneND 1.00 ug/L 05/25/22 03:54 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 03:54 1TetrachloroetheneND 1.00 ug/L 05/25/22 03:54 1TolueneND 1.00 ug/L 05/25/22 03:54 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 03:54 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 03:54 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 03:54 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 03:54 1Trichloroethene1.28 2.00 ug/L 05/25/22 03:54 1TrichlorofluoromethaneND 1.00 ug/L 05/25/22 03:54 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 03:54 1Vinyl chloride 3.36 2.00 ug/L 05/25/22 03:54 1m-Xylene & p-Xylene ND 1.00 ug/L 05/25/22 03:54 1o-Xylene ND 5.00 ug/L 05/25/22 03:54 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)102 70 -127 05/25/22 03:54 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 05/25/22 03:54 180-125 4-Bromofluorobenzene (Surr)108 05/25/22 03:54 178-120 Dibromofluoromethane (Surr)101 05/25/22 03:54 177-120 Lab Sample ID: 280-162353-1Client Sample ID: MW-10 Matrix: WaterDate Collected: 05/12/22 10:40 Date Received: 05/13/22 14:55 RL MDL Acetone ND 40.0 ug/L 05/25/22 18:38 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.00 ug/L 05/25/22 18:38 2BenzeneND 4.00 ug/L 05/25/22 18:38 2ChlorobromomethaneND 2.00 ug/L 05/25/22 18:38 2DichlorobromomethaneND 4.00 ug/L 05/25/22 18:38 2BromoformND 20.0 ug/L 05/25/22 18:38 2BromomethaneND 40.0 ug/L 05/25/22 18:38 22-Butanone (MEK)ND 4.00 ug/L 05/25/22 18:38 2Carbon disulfide ND 2.00 ug/L 05/25/22 18:38 2Carbon tetrachloride ND 2.00 ug/L 05/25/22 18:38 2ChlorobenzeneND Eurofins Denver Page 67 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162353-1Client Sample ID: MW-10 Matrix: WaterDate Collected: 05/12/22 10:40 Date Received: 05/13/22 14:55 RL MDL Chlorodibromomethane ND 2.00 ug/L 05/25/22 18:38 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 8.00 ug/L 05/25/22 18:38 2ChloroethaneND 2.00 ug/L 05/25/22 18:38 2ChloroformND 4.00 ug/L 05/25/22 18:38 2ChloromethaneND 2.00 ug/L 05/25/22 18:38 2CyclohexaneND 10.0 ug/L 05/25/22 18:38 21,2-Dibromo-3-Chloropropane ND 2.00 ug/L 05/25/22 18:38 21,2-Dichlorobenzene ND 2.00 ug/L 05/25/22 18:38 21,3-Dichlorobenzene ND 2.00 ug/L 05/25/22 18:38 21,4-Dichlorobenzene ND 4.00 ug/L 05/25/22 18:38 2DichlorodifluoromethaneND 2.00 ug/L 05/25/22 18:38 21,1-Dichloroethane 2.88 2.00 ug/L 05/25/22 18:38 21,2-Dichloroethane ND 2.00 ug/L 05/25/22 18:38 2cis-1,2-Dichloroethene 284 2.00 ug/L 05/25/22 18:38 2trans-1,2-Dichloroethene 9.76 2.00 ug/L 05/25/22 18:38 21,1-Dichloroethene 3.92 2.00 ug/L 05/25/22 18:38 21,2-Dichloropropane ND 2.00 ug/L 05/25/22 18:38 2cis-1,3-Dichloropropene ND 2.00 ug/L 05/25/22 18:38 2trans-1,3-Dichloropropene ND 40.0 ug/L 05/25/22 18:38 21,4-Dioxane ND 2.00 ug/L 05/25/22 18:38 2EthylbenzeneND 10.0 ug/L 05/25/22 18:38 22-Hexanone ND 2.00 ug/L 05/25/22 18:38 2IsopropylbenzeneND 10.0 ug/L 05/25/22 18:38 2Methyl acetate ND 2.00 ug/L 05/25/22 18:38 2MethylcyclohexaneND 10.0 ug/L 05/25/22 18:38 2Methylene Chloride ND 10.0 ug/L 05/25/22 18:38 24-Methyl-2-pentanone (MIBK)ND 10.0 ug/L 05/25/22 18:38 2Methyl tert-butyl ether ND 2.00 ug/L 05/25/22 18:38 2StyreneND 2.00 ug/L 05/25/22 18:38 21,1,2,2-Tetrachloroethane ND 2.00 ug/L 05/25/22 18:38 2TetrachloroetheneND 2.00 ug/L 05/25/22 18:38 2TolueneND 2.00 ug/L 05/25/22 18:38 21,2,3-Trichlorobenzene ND 2.00 ug/L 05/25/22 18:38 21,2,4-Trichlorobenzene ND 2.00 ug/L 05/25/22 18:38 21,1,1-Trichloroethane ND 2.00 ug/L 05/25/22 18:38 21,1,2-Trichloroethane ND 2.00 ug/L 05/25/22 18:38 2TrichloroetheneND 4.00 ug/L 05/25/22 18:38 2TrichlorofluoromethaneND 2.00 ug/L 05/25/22 18:38 21,1,2-Trichlorotrifluoroethane ND 2.00 ug/L 05/25/22 18:38 2Vinyl chloride 2.37 4.00 ug/L 05/25/22 18:38 2m-Xylene & p-Xylene ND 2.00 ug/L 05/25/22 18:38 2o-Xylene ND 10.0 ug/L 05/25/22 18:38 21,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)110 70 -127 05/25/22 18:38 2 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)105 05/25/22 18:38 280-125 4-Bromofluorobenzene (Surr)108 05/25/22 18:38 278-120 Dibromofluoromethane (Surr)101 05/25/22 18:38 277-120 Eurofins Denver Page 68 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS Lab Sample ID: 280-162353-2Client Sample ID: MW-10I Matrix: WaterDate Collected: 05/12/22 11:25 Date Received: 05/13/22 14:55 RL MDL Acetone ND 100 ug/L 05/25/22 19:00 5 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 05/25/22 19:00 5BenzeneND 10.0 ug/L 05/25/22 19:00 5ChlorobromomethaneND 5.00 ug/L 05/25/22 19:00 5DichlorobromomethaneND 10.0 ug/L 05/25/22 19:00 5BromoformND 50.0 ug/L 05/25/22 19:00 5BromomethaneND 100 ug/L 05/25/22 19:00 52-Butanone (MEK)ND 10.0 ug/L 05/25/22 19:00 5Carbon disulfide ND 5.00 ug/L 05/25/22 19:00 5Carbon tetrachloride ND 5.00 ug/L 05/25/22 19:00 5ChlorobenzeneND 5.00 ug/L 05/25/22 19:00 5ChlorodibromomethaneND 20.0 ug/L 05/25/22 19:00 5ChloroethaneND 5.00 ug/L 05/25/22 19:00 5ChloroformND 10.0 ug/L 05/25/22 19:00 5ChloromethaneND 5.00 ug/L 05/25/22 19:00 5CyclohexaneND 25.0 ug/L 05/25/22 19:00 51,2-Dibromo-3-Chloropropane ND 5.00 ug/L 05/25/22 19:00 51,2-Dichlorobenzene ND 5.00 ug/L 05/25/22 19:00 51,3-Dichlorobenzene ND 5.00 ug/L 05/25/22 19:00 51,4-Dichlorobenzene ND 10.0 ug/L 05/25/22 19:00 5DichlorodifluoromethaneND 5.00 ug/L 05/25/22 19:00 51,1-Dichloroethane 5.87 5.00 ug/L 05/25/22 19:00 51,2-Dichloroethane ND 5.00 ug/L 05/25/22 19:00 5cis-1,2-Dichloroethene 752 5.00 ug/L 05/25/22 19:00 5trans-1,2-Dichloroethene 28.2 5.00 ug/L 05/25/22 19:00 51,1-Dichloroethene 14.2 5.00 ug/L 05/25/22 19:00 51,2-Dichloropropane ND 5.00 ug/L 05/25/22 19:00 5cis-1,3-Dichloropropene ND 5.00 ug/L 05/25/22 19:00 5trans-1,3-Dichloropropene ND 100 ug/L 05/25/22 19:00 51,4-Dioxane ND 5.00 ug/L 05/25/22 19:00 5EthylbenzeneND 25.0 ug/L 05/25/22 19:00 52-Hexanone ND 5.00 ug/L 05/25/22 19:00 5IsopropylbenzeneND 25.0 ug/L 05/25/22 19:00 5Methyl acetate ND 5.00 ug/L 05/25/22 19:00 5MethylcyclohexaneND 25.0 ug/L 05/25/22 19:00 5Methylene Chloride ND 25.0 ug/L 05/25/22 19:00 54-Methyl-2-pentanone (MIBK)ND 25.0 ug/L 05/25/22 19:00 5Methyl tert-butyl ether ND 5.00 ug/L 05/25/22 19:00 5StyreneND 5.00 ug/L 05/25/22 19:00 51,1,2,2-Tetrachloroethane ND 5.00 ug/L 05/25/22 19:00 5TetrachloroetheneND 5.00 ug/L 05/25/22 19:00 5TolueneND 5.00 ug/L 05/25/22 19:00 51,2,3-Trichlorobenzene ND 5.00 ug/L 05/25/22 19:00 51,2,4-Trichlorobenzene ND 5.00 ug/L 05/25/22 19:00 51,1,1-Trichloroethane ND 5.00 ug/L 05/25/22 19:00 51,1,2-Trichloroethane ND 5.00 ug/L 05/25/22 19:00 5Trichloroethene51.7 10.0 ug/L 05/25/22 19:00 5TrichlorofluoromethaneND 5.00 ug/L 05/25/22 19:00 51,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 05/25/22 19:00 5Vinyl chloride ND Eurofins Denver Page 69 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162353-2Client Sample ID: MW-10I Matrix: WaterDate Collected: 05/12/22 11:25 Date Received: 05/13/22 14:55 RL MDL m-Xylene & p-Xylene ND 10.0 ug/L 05/25/22 19:00 5 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 05/25/22 19:00 5o-Xylene ND 25.0 ug/L 05/25/22 19:00 51,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)106 70 -127 05/25/22 19:00 5 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)104 05/25/22 19:00 580-125 4-Bromofluorobenzene (Surr)109 05/25/22 19:00 578-120 Dibromofluoromethane (Surr)100 05/25/22 19:00 577-120 Lab Sample ID: 280-162353-3Client Sample ID: MW-12 Matrix: WaterDate Collected: 05/12/22 11:50 Date Received: 05/13/22 14:55 RL MDL Acetone ND 20.0 ug/L 05/25/22 19:21 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 19:21 1BenzeneND 2.00 ug/L 05/25/22 19:21 1ChlorobromomethaneND 1.00 ug/L 05/25/22 19:21 1DichlorobromomethaneND 2.00 ug/L 05/25/22 19:21 1BromoformND 10.0 ug/L 05/25/22 19:21 1BromomethaneND 20.0 ug/L 05/25/22 19:21 12-Butanone (MEK)ND 2.00 ug/L 05/25/22 19:21 1Carbon disulfide ND 1.00 ug/L 05/25/22 19:21 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 19:21 1ChlorobenzeneND 1.00 ug/L 05/25/22 19:21 1ChlorodibromomethaneND 4.00 ug/L 05/25/22 19:21 1ChloroethaneND 1.00 ug/L 05/25/22 19:21 1ChloroformND 2.00 ug/L 05/25/22 19:21 1ChloromethaneND 1.00 ug/L 05/25/22 19:21 1CyclohexaneND 5.00 ug/L 05/25/22 19:21 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/25/22 19:21 11,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 19:21 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 19:21 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 19:21 1DichlorodifluoromethaneND 1.00 ug/L 05/25/22 19:21 11,1-Dichloroethane 1.88 1.00 ug/L 05/25/22 19:21 11,2-Dichloroethane ND 1.00 ug/L 05/25/22 19:21 1cis-1,2-Dichloroethene 32.6 1.00 ug/L 05/25/22 19:21 1trans-1,2-Dichloroethene 2.00 1.00 ug/L 05/25/22 19:21 11,1-Dichloroethene ND 1.00 ug/L 05/25/22 19:21 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 19:21 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 19:21 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 19:21 11,4-Dioxane ND 1.00 ug/L 05/25/22 19:21 1EthylbenzeneND 5.00 ug/L 05/25/22 19:21 12-Hexanone ND 1.00 ug/L 05/25/22 19:21 1IsopropylbenzeneND 5.00 ug/L 05/25/22 19:21 1Methyl acetate ND 1.00 ug/L 05/25/22 19:21 1MethylcyclohexaneND 5.00 ug/L 05/25/22 19:21 1Methylene Chloride ND 5.00 ug/L 05/25/22 19:21 14-Methyl-2-pentanone (MIBK)ND Eurofins Denver Page 70 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162353-3Client Sample ID: MW-12 Matrix: WaterDate Collected: 05/12/22 11:50 Date Received: 05/13/22 14:55 RL MDL Methyl tert-butyl ether ND 5.00 ug/L 05/25/22 19:21 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 19:21 1StyreneND 1.00 ug/L 05/25/22 19:21 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 19:21 1TetrachloroetheneND 1.00 ug/L 05/25/22 19:21 1TolueneND 1.00 ug/L 05/25/22 19:21 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 19:21 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 19:21 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 19:21 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 19:21 1TrichloroetheneND 2.00 ug/L 05/25/22 19:21 1TrichlorofluoromethaneND 1.00 ug/L 05/25/22 19:21 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 19:21 1Vinyl chloride 5.03 2.00 ug/L 05/25/22 19:21 1m-Xylene & p-Xylene ND 1.00 ug/L 05/25/22 19:21 1o-Xylene ND 5.00 ug/L 05/25/22 19:21 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)111 70 -127 05/25/22 19:21 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)105 05/25/22 19:21 180-125 4-Bromofluorobenzene (Surr)110 05/25/22 19:21 178-120 Dibromofluoromethane (Surr)102 05/25/22 19:21 177-120 Lab Sample ID: 280-162353-4Client Sample ID: MW-12-c Matrix: WaterDate Collected: 05/12/22 12:30 Date Received: 05/13/22 14:55 RL MDL Acetone ND 20.0 ug/L 05/25/22 19:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 19:42 1BenzeneND 2.00 ug/L 05/25/22 19:42 1ChlorobromomethaneND 1.00 ug/L 05/25/22 19:42 1DichlorobromomethaneND 2.00 ug/L 05/25/22 19:42 1BromoformND 10.0 ug/L 05/25/22 19:42 1BromomethaneND 20.0 ug/L 05/25/22 19:42 12-Butanone (MEK)ND 2.00 ug/L 05/25/22 19:42 1Carbon disulfide ND 1.00 ug/L 05/25/22 19:42 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 19:42 1ChlorobenzeneND 1.00 ug/L 05/25/22 19:42 1ChlorodibromomethaneND 4.00 ug/L 05/25/22 19:42 1ChloroethaneND 1.00 ug/L 05/25/22 19:42 1ChloroformND 2.00 ug/L 05/25/22 19:42 1ChloromethaneND 1.00 ug/L 05/25/22 19:42 1CyclohexaneND 5.00 ug/L 05/25/22 19:42 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/25/22 19:42 11,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 19:42 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 19:42 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 19:42 1DichlorodifluoromethaneND 1.00 ug/L 05/25/22 19:42 11,1-Dichloroethane ND 1.00 ug/L 05/25/22 19:42 11,2-Dichloroethane ND 1.00 ug/L 05/25/22 19:42 1cis-1,2-Dichloroethene ND Eurofins Denver Page 71 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Lab Sample ID: 280-162353-4Client Sample ID: MW-12-c Matrix: WaterDate Collected: 05/12/22 12:30 Date Received: 05/13/22 14:55 RL MDL trans-1,2-Dichloroethene ND 1.00 ug/L 05/25/22 19:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 05/25/22 19:42 11,1-Dichloroethene ND 1.00 ug/L 05/25/22 19:42 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 19:42 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 19:42 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 19:42 11,4-Dioxane ND 1.00 ug/L 05/25/22 19:42 1EthylbenzeneND 5.00 ug/L 05/25/22 19:42 12-Hexanone ND 1.00 ug/L 05/25/22 19:42 1IsopropylbenzeneND 5.00 ug/L 05/25/22 19:42 1Methyl acetate ND 1.00 ug/L 05/25/22 19:42 1MethylcyclohexaneND 5.00 ug/L 05/25/22 19:42 1Methylene Chloride ND 5.00 ug/L 05/25/22 19:42 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 05/25/22 19:42 1Methyl tert-butyl ether ND 1.00 ug/L 05/25/22 19:42 1StyreneND 1.00 ug/L 05/25/22 19:42 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 19:42 1TetrachloroetheneND 1.00 ug/L 05/25/22 19:42 1TolueneND 1.00 ug/L 05/25/22 19:42 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 19:42 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 19:42 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 19:42 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 19:42 1TrichloroetheneND 2.00 ug/L 05/25/22 19:42 1TrichlorofluoromethaneND 1.00 ug/L 05/25/22 19:42 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 19:42 1Vinyl chloride ND 2.00 ug/L 05/25/22 19:42 1m-Xylene & p-Xylene ND 1.00 ug/L 05/25/22 19:42 1o-Xylene ND 5.00 ug/L 05/25/22 19:42 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)110 70 -127 05/25/22 19:42 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)105 05/25/22 19:42 180-125 4-Bromofluorobenzene (Surr)108 05/25/22 19:42 178-120 Dibromofluoromethane (Surr)100 05/25/22 19:42 177-120 Method: 8260D - Volatile Organic Compounds by GC/MS - DL Lab Sample ID: 280-162293-12Client Sample ID: MW-14I Matrix: WaterDate Collected: 05/11/22 09:55 Date Received: 05/12/22 10:20 RL MDL cis-1,2-Dichloroethene 449 H 10.0 ug/L 05/26/22 12:09 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)101 70 -127 05/26/22 12:09 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)105 05/26/22 12:09 1080-125 4-Bromofluorobenzene (Surr)109 05/26/22 12:09 1078-120 Dibromofluoromethane (Surr)100 05/26/22 12:09 1077-120 Eurofins Denver Page 72 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: RSK-175 - Dissolved Gases (GC) Lab Sample ID: 280-162293-6Client Sample ID: MW-9I Matrix: WaterDate Collected: 05/11/22 14:25 Date Received: 05/12/22 10:20 RL MDL Methane 55.4 5.00 ug/L 05/20/22 17:56 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 05/20/22 17:56 1EtheneND 5.00 ug/L 05/20/22 17:56 1EthaneND 5.00 ug/L 05/20/22 17:56 1AcetyleneND 5.00 ug/L 05/20/22 17:56 1ButaneND 5.00 ug/L 05/20/22 17:56 1PropaneND 5.00 ug/L 05/20/22 17:56 1isobutyleneND Lab Sample ID: 280-162293-10Client Sample ID: MW-19I Matrix: WaterDate Collected: 05/11/22 12:25 Date Received: 05/12/22 10:20 RL MDL Methane 251 5.00 ug/L 05/20/22 18:09 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 05/20/22 18:09 1EtheneND 5.00 ug/L 05/20/22 18:09 1EthaneND 5.00 ug/L 05/20/22 18:09 1AcetyleneND 5.00 ug/L 05/20/22 18:09 1ButaneND 5.00 ug/L 05/20/22 18:09 1PropaneND 5.00 ug/L 05/20/22 18:09 1isobutyleneND Lab Sample ID: 280-162293-12Client Sample ID: MW-14I Matrix: WaterDate Collected: 05/11/22 09:55 Date Received: 05/12/22 10:20 RL MDL Methane 90.6 5.00 ug/L 05/20/22 18:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 05/20/22 18:22 1EtheneND 5.00 ug/L 05/20/22 18:22 1EthaneND 5.00 ug/L 05/20/22 18:22 1AcetyleneND 5.00 ug/L 05/20/22 18:22 1ButaneND 5.00 ug/L 05/20/22 18:22 1PropaneND 5.00 ug/L 05/20/22 18:22 1isobutyleneND Method: 6010D - Metals (ICP) - Total Recoverable Lab Sample ID: 280-162293-6Client Sample ID: MW-9I Matrix: WaterDate Collected: 05/11/22 14:25 Date Received: 05/12/22 10:20 RL MDL Iron 129 100 ug/L 05/18/22 17:33 05/19/22 12:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 10.0 ug/L 05/18/22 17:33 05/19/22 12:25 1Manganese310 Lab Sample ID: 280-162293-10Client Sample ID: MW-19I Matrix: WaterDate Collected: 05/11/22 12:25 Date Received: 05/12/22 10:20 RL MDL Iron 171 100 ug/L 05/18/22 17:33 05/19/22 12:41 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 10.0 ug/L 05/18/22 17:33 05/19/22 12:41 1Manganese289 Eurofins Denver Page 73 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 6010D - Metals (ICP) - Total Recoverable Lab Sample ID: 280-162293-12Client Sample ID: MW-14I Matrix: WaterDate Collected: 05/11/22 09:55 Date Received: 05/12/22 10:20 RL MDL Iron 222 100 ug/L 05/18/22 17:33 05/19/22 12:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 10.0 ug/L 05/18/22 17:33 05/19/22 12:45 1Manganese361 Method: 6010D - Metals (ICP) - Dissolved Lab Sample ID: 280-162293-6Client Sample ID: MW-9I Matrix: WaterDate Collected: 05/11/22 14:25 Date Received: 05/12/22 10:20 RL MDL Iron ND 100 ug/L 05/20/22 06:51 05/20/22 20:39 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 10.0 ug/L 05/20/22 06:51 05/20/22 20:39 1Manganese214 Lab Sample ID: 280-162293-10Client Sample ID: MW-19I Matrix: WaterDate Collected: 05/11/22 12:25 Date Received: 05/12/22 10:20 RL MDL Iron ND 100 ug/L 05/20/22 06:51 05/20/22 20:44 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 10.0 ug/L 05/20/22 06:51 05/20/22 20:44 1Manganese271 Lab Sample ID: 280-162293-12Client Sample ID: MW-14I Matrix: WaterDate Collected: 05/11/22 09:55 Date Received: 05/12/22 10:20 RL MDL Iron ND 100 ug/L 05/20/22 06:51 05/20/22 20:48 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 10.0 ug/L 05/20/22 06:51 05/20/22 20:48 1Manganese312 General Chemistry Lab Sample ID: 280-162293-6Client Sample ID: MW-9I Matrix: WaterDate Collected: 05/11/22 14:25 Date Received: 05/12/22 10:20 RL MDL Sulfate 347 25.0 mg/L 05/23/22 17:25 5 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 mg/L 05/18/22 20:55 1Total Organic Carbon - Duplicates 1.34 Lab Sample ID: 280-162293-10Client Sample ID: MW-19I Matrix: WaterDate Collected: 05/11/22 12:25 Date Received: 05/12/22 10:20 RL MDL Sulfate 468 25.0 mg/L 05/23/22 18:10 5 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 mg/L 05/15/22 02:43 1Total Organic Carbon - Duplicates 3.52 Lab Sample ID: 280-162293-12Client Sample ID: MW-14I Matrix: WaterDate Collected: 05/11/22 09:55 Date Received: 05/12/22 10:20 RL MDL Sulfate 407 25.0 mg/L 05/23/22 18:25 5 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 mg/L 05/15/22 03:01 1Total Organic Carbon - Duplicates 2.98 Eurofins Denver Page 74 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (70-127) (80-125) (78-120) (77-120) DCA TOL BFB DBFM 98 97 100 99280-162142-1 Percent Surrogate Recovery (Acceptance Limits) MW-17I 95 96 99 97280-162142-2 MW-11 99 97 99 99280-162142-3 MW-11I 99 96 99 99280-162142-4 MW-11I-c 100 95 99 101280-162142-5 MW-5 96 99 99 95280-162142-6 MW-5I 97 96 99 100280-162142-7 MW-2 93 97 100 95280-162144-B-8 MS Matrix Spike 92 96 103 95280-162144-C-8 MSD Matrix Spike Duplicate 108 105 108 100280-162228-1 MW-3I 111 106 109 101280-162228-2 MW-3 108 104 108 101280-162228-3 MW-2A 110 103 107 101280-162228-4 MW-2I 109 105 107 101280-162228-5 MW-15 109 106 106 101280-162228-6 MW-15I 108 104 107 100280-162228-7 MW-7I 107 107 106 100280-162228-8 MW-7 112 104 106 102280-162228-9 MW-8 108 105 106 101280-162228-10 MW-8-a 108 104 106 101280-162228-11 B-1 111 105 109 102280-162228-12 B-3 112 105 106 101280-162228-13 MW-20I 110 104 106 102280-162228-14 MW-15-c 99 101 110 101280-162293-1 MW-16 98 103 112 99280-162293-2 MW-16-c 101 101 108 103280-162293-3 MW-6 101 103 109 101280-162293-4 MW-6I 101 100 109 101280-162293-5 MW-9 101 104 109 98280-162293-6 MW-9I 104 104 107 101280-162293-7 MW-13 102 103 111 97280-162293-7 MS MW-13 101 102 111 99280-162293-7 MSD MW-13 103 101 110 102280-162293-8 MW-13I 102 104 110 100280-162293-9 MW-18I 102 102 109 100280-162293-10 MW-19I 103 103 109 102280-162293-11 MW-14 100 102 110 98280-162293-11 MS MW-14 103 102 109 97280-162293-11 MSD MW-14 103 103 109 103280-162293-12 MW-14I 101 105 109 100280-162293-12 - DL MW-14I 101 102 110 99280-162293-13 MW-4 100 101 109 101280-162293-14 MW-4I 102 101 108 101280-162293-15 MW-18I-a 102 101 108 99280-162321-C-3 MS Matrix Spike 103 100 109 100280-162321-C-3 MSD Matrix Spike Duplicate 110 105 108 101280-162353-1 MW-10 106 104 109 100280-162353-2 MW-10I 111 105 110 102280-162353-3 MW-12 110 105 108 100280-162353-4 MW-12-c Eurofins Denver Page 75 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (70-127) (80-125) (78-120) (77-120) DCA TOL BFB DBFM 108 106 111 96280-162369-B-4 MS Percent Surrogate Recovery (Acceptance Limits) Matrix Spike 105 105 110 97280-162369-B-4 MSD Matrix Spike Duplicate 93 99 102 93LCS 280-575756/1002 Lab Control Sample 105 105 106 96LCS 280-575885/1002 Lab Control Sample 100 101 112 94LCS 280-576078/1002 Lab Control Sample 106 104 109 97LCS 280-576171/1002 Lab Control Sample 99 103 112 95LCS 280-576238/1002 Lab Control Sample 95 97 99 93LCSD 280-575756/5 Lab Control Sample Dup 106 104 105 97LCSD 280-575885/5 Lab Control Sample Dup 99 102 109 98LCSD 280-576078/5 Lab Control Sample Dup 106 105 109 96LCSD 280-576171/5 Lab Control Sample Dup 98 103 110 96LCSD 280-576238/5 Lab Control Sample Dup 98 95 99 99MB 280-575756/9 Method Blank 109 104 107 101MB 280-575885/9 Method Blank 102 101 112 100MB 280-576078/9 Method Blank 110 108 110 101MB 280-576171/9 Method Blank 103 100 107 103MB 280-576238/9 Method Blank Surrogate Legend DCA = 1,2-Dichloroethane-d4 (Surr) TOL = Toluene-d8 (Surr) BFB = 4-Bromofluorobenzene (Surr) DBFM = Dibromofluoromethane (Surr) Method: 8260D SIM - Volatile Organic Compounds (GC/MS) Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (70-127) DCA 122280-162142-1 Percent Surrogate Recovery (Acceptance Limits) MW-17I 120280-162142-2 MW-11 118280-162142-3 MW-11I 113280-162142-4 MW-11I-c 119280-162142-5 MW-5 121280-162142-6 MW-5I 119280-162142-7 MW-2 120280-162228-1 MW-3I 119280-162228-2 MW-3 121280-162228-3 MW-2A 124280-162228-4 MW-2I 119280-162228-5 MW-15 117280-162228-6 MW-15I 119280-162228-7 MW-7I 120280-162228-8 MW-7 120280-162228-9 MW-8 120280-162228-10 MW-8-a 120280-162228-11 B-1 122280-162228-12 B-3 122280-162228-13 MW-20I 123280-162228-14 MW-15-c Eurofins Denver Page 76 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) (Continued) Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (70-127) DCA 119280-162293-1 Percent Surrogate Recovery (Acceptance Limits) MW-16 121280-162293-2 MW-16-c 119280-162293-3 MW-6 122280-162293-4 MW-6I 120280-162293-5 MW-9 114280-162293-6 MW-9I 119280-162293-7 MW-13 115280-162293-7 MS MW-13 113280-162293-7 MSD MW-13 117280-162293-8 MW-13I 122280-162293-9 MW-18I 114280-162293-10 MW-19I 121280-162293-11 MW-14 114280-162293-11 MS MW-14 114280-162293-11 MSD MW-14 111280-162293-12 MW-14I 120280-162293-13 MW-4 120280-162293-14 MW-4I 120280-162293-15 MW-18I-a 121280-162353-1 MW-10 120280-162353-2 MW-10I 123280-162353-3 MW-12 124280-162353-4 MW-12-c 109LCS 280-575778/3 Lab Control Sample 114LCS 280-575794/3 Lab Control Sample 111LCS 280-575847/3 Lab Control Sample 117LCS 280-575851/3 Lab Control Sample 113LCS 280-576090/3 Lab Control Sample 106LCSD 280-575778/4 Lab Control Sample Dup 112LCSD 280-575794/4 Lab Control Sample Dup 112LCSD 280-575847/4 Lab Control Sample Dup 114LCSD 280-575851/4 Lab Control Sample Dup 112LCSD 280-576090/4 Lab Control Sample Dup 113MB 280-575778/6 Method Blank 118MB 280-575794/6 Method Blank 118MB 280-575847/6 Method Blank 120MB 280-575851/6 Method Blank 121MB 280-576090/6 Method Blank Surrogate Legend DCA = 1,2-Dichloroethane-d4 (Surr) Eurofins Denver Page 77 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS Client Sample ID: Method BlankLab Sample ID: MB 280-575756/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 575756 RL MDL Acetone ND 20.0 ug/L 05/21/22 09:09 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 05/21/22 09:09 1Benzene ND 2.00 ug/L 05/21/22 09:09 1Chlorobromomethane ND 1.00 ug/L 05/21/22 09:09 1Dichlorobromomethane ND 2.00 ug/L 05/21/22 09:09 1Bromoform ND 10.0 ug/L 05/21/22 09:09 1Bromomethane ND 20.0 ug/L 05/21/22 09:09 12-Butanone (MEK) ND 2.00 ug/L 05/21/22 09:09 1Carbon disulfide ND 1.00 ug/L 05/21/22 09:09 1Carbon tetrachloride ND 1.00 ug/L 05/21/22 09:09 1Chlorobenzene ND 1.00 ug/L 05/21/22 09:09 1Chlorodibromomethane ND 4.00 ug/L 05/21/22 09:09 1Chloroethane ND 1.00 ug/L 05/21/22 09:09 1Chloroform ND 2.00 ug/L 05/21/22 09:09 1Chloromethane ND 1.00 ug/L 05/21/22 09:09 1Cyclohexane ND 5.00 ug/L 05/21/22 09:09 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/21/22 09:09 11,2-Dichlorobenzene ND 1.00 ug/L 05/21/22 09:09 11,3-Dichlorobenzene ND 1.00 ug/L 05/21/22 09:09 11,4-Dichlorobenzene ND 2.00 ug/L 05/21/22 09:09 1Dichlorodifluoromethane ND 1.00 ug/L 05/21/22 09:09 11,1-Dichloroethane ND 1.00 ug/L 05/21/22 09:09 11,2-Dichloroethane ND 1.00 ug/L 05/21/22 09:09 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 09:09 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/21/22 09:09 11,1-Dichloroethene ND 1.00 ug/L 05/21/22 09:09 11,2-Dichloropropane ND 1.00 ug/L 05/21/22 09:09 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/21/22 09:09 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/21/22 09:09 11,4-Dioxane ND 1.00 ug/L 05/21/22 09:09 1Ethylbenzene ND 5.00 ug/L 05/21/22 09:09 12-Hexanone ND 1.00 ug/L 05/21/22 09:09 1Isopropylbenzene ND 5.00 ug/L 05/21/22 09:09 1Methyl acetate ND 1.00 ug/L 05/21/22 09:09 1Methylcyclohexane ND 5.00 ug/L 05/21/22 09:09 1Methylene Chloride ND 5.00 ug/L 05/21/22 09:09 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 05/21/22 09:09 1Methyl tert-butyl ether ND 1.00 ug/L 05/21/22 09:09 1Styrene ND 1.00 ug/L 05/21/22 09:09 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/21/22 09:09 1Tetrachloroethene ND 1.00 ug/L 05/21/22 09:09 1Toluene ND 1.00 ug/L 05/21/22 09:09 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/21/22 09:09 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/21/22 09:09 11,1,1-Trichloroethane ND 1.00 ug/L 05/21/22 09:09 11,1,2-Trichloroethane ND 1.00 ug/L 05/21/22 09:09 1Trichloroethene ND 2.00 ug/L 05/21/22 09:09 1Trichlorofluoromethane ND 1.00 ug/L 05/21/22 09:09 11,1,2-Trichlorotrifluoroethane Eurofins Denver Page 78 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-575756/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 575756 RL MDL Vinyl chloride ND 1.00 ug/L 05/21/22 09:09 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 2.00 ug/L 05/21/22 09:09 1m-Xylene & p-Xylene ND 1.00 ug/L 05/21/22 09:09 1o-Xylene ND 5.00 ug/L 05/21/22 09:09 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)98 70 -127 05/21/22 09:09 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 95 05/21/22 09:09 1Toluene-d8 (Surr)80 -125 99 05/21/22 09:09 14-Bromofluorobenzene (Surr)78 -120 99 05/21/22 09:09 1Dibromofluoromethane (Surr)77 -120 Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575756/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 575756 Acetone 200 185.8 ug/L 93 50 -137 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 50.0 49.11 ug/L 98 69 -126 Chlorobromomethane 50.0 45.72 ug/L 91 71 -130 Dichlorobromomethane 50.0 48.17 ug/L 96 67 -126 Bromoform 50.0 52.22 ug/L 104 57 -125 Bromomethane 50.0 47.95 ug/L 96 25 -163 2-Butanone (MEK)200 212.9 ug/L 106 53 -135 Carbon disulfide 50.0 46.77 ug/L 94 56 -128 Carbon tetrachloride 50.0 48.96 ug/L 98 60 -133 Chlorobenzene 50.0 47.91 ug/L 96 78 -118 Chlorodibromomethane 50.0 53.26 ug/L 107 71 -122 Chloroethane 50.0 51.64 ug/L 103 52 -144 Chloroform 50.0 47.38 ug/L 95 68 -128 Chloromethane 50.0 45.05 ug/L 90 43 -142 1,2-Dibromo-3-Chloropropane 50.0 46.41 ug/L 93 58 -122 1,2-Dichlorobenzene 50.0 49.50 ug/L 99 77 -121 1,3-Dichlorobenzene 50.0 50.17 ug/L 100 76 -121 1,4-Dichlorobenzene 50.0 47.86 ug/L 96 76 -119 Dichlorodifluoromethane 50.0 44.85 ug/L 90 26 -152 1,1-Dichloroethane 50.0 46.14 ug/L 92 66 -130 1,2-Dichloroethane 50.0 45.24 ug/L 90 61 -130 cis-1,2-Dichloroethene 50.0 50.97 ug/L 102 69 -126 trans-1,2-Dichloroethene 50.0 47.62 ug/L 95 66 -129 1,1-Dichloroethene 50.0 47.36 ug/L 95 62 -130 1,2-Dichloropropane 50.0 48.97 ug/L 98 68 -127 cis-1,3-Dichloropropene 50.0 48.86 ug/L 98 75 -120 trans-1,3-Dichloropropene 50.0 53.22 ug/L 106 66 -127 Ethylbenzene 50.0 48.43 ug/L 97 76 -121 2-Hexanone 200 206.6 ug/L 103 58 -134 Isopropylbenzene 50.0 51.51 ug/L 103 70 -127 Methylene Chloride 50.0 44.92 ug/L 90 64 -128 4-Methyl-2-pentanone (MIBK)200 211.8 ug/L 106 56 -135 Eurofins Denver Page 79 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575756/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 575756 Methyl tert-butyl ether 50.0 54.22 ug/L 108 70 -127 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Styrene 50.0 51.94 ug/L 104 79 -120 1,1,2,2-Tetrachloroethane 50.0 49.29 ug/L 99 72 -122 Tetrachloroethene 50.0 48.34 ug/L 97 72 -127 Toluene 50.0 49.26 ug/L 99 68 -127 1,2,3-Trichlorobenzene 50.0 43.07 ug/L 86 70 -127 1,2,4-Trichlorobenzene 50.0 47.30 ug/L 95 73 -124 1,1,1-Trichloroethane 50.0 48.41 ug/L 97 62 -132 1,1,2-Trichloroethane 50.0 50.01 ug/L 100 72 -128 Trichloroethene 50.0 45.83 ug/L 92 70 -125 Trichlorofluoromethane 50.0 46.70 ug/L 93 57 -144 Vinyl chloride 50.0 45.95 ug/L 92 53 -141 m-Xylene & p-Xylene 50.0 48.99 ug/L 98 76 -122 o-Xylene 50.0 49.79 ug/L 100 77 -120 1,2-Dibromoethane 50.0 51.96 ug/L 104 81 -118 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 93 LCS LCS Qualifier Limits%Recovery 99Toluene-d8 (Surr)80 -125 1024-Bromofluorobenzene (Surr)78 -120 93Dibromofluoromethane (Surr)77 -120 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-575756/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 575756 Acetone 200 176.6 ug/L 88 50 -137 5 21 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 50.0 47.22 ug/L 94 69 -126 4 20 Chlorobromomethane 50.0 44.33 ug/L 89 71 -130 3 20 Dichlorobromomethane 50.0 47.75 ug/L 95 67 -126 1 20 Bromoform 50.0 49.58 ug/L 99 57 -125 5 20 Bromomethane 50.0 45.86 ug/L 92 25 -163 4 40 2-Butanone (MEK)200 206.6 ug/L 103 53 -135 3 20 Carbon disulfide 50.0 45.29 ug/L 91 56 -128 3 20 Carbon tetrachloride 50.0 47.65 ug/L 95 60 -133 3 20 Chlorobenzene 50.0 46.01 ug/L 92 78 -118 4 20 Chlorodibromomethane 50.0 49.46 ug/L 99 71 -122 7 20 Chloroethane 50.0 50.22 ug/L 100 52 -144 3 30 Chloroform 50.0 46.42 ug/L 93 68 -128 2 20 Chloromethane 50.0 45.84 ug/L 92 43 -142 2 20 1,2-Dibromo-3-Chloropropane 50.0 43.43 ug/L 87 58 -122 7 21 1,2-Dichlorobenzene 50.0 47.27 ug/L 95 77 -121 5 20 1,3-Dichlorobenzene 50.0 47.55 ug/L 95 76 -121 5 20 1,4-Dichlorobenzene 50.0 45.58 ug/L 91 76 -119 5 20 Dichlorodifluoromethane 50.0 46.10 ug/L 92 26 -152 3 21 1,1-Dichloroethane 50.0 45.09 ug/L 90 66 -130 2 20 1,2-Dichloroethane 50.0 43.15 ug/L 86 61 -130 5 20 Eurofins Denver Page 80 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-575756/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 575756 cis-1,2-Dichloroethene 50.0 49.23 ug/L 98 69 -126 3 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD trans-1,2-Dichloroethene 50.0 46.94 ug/L 94 66 -129 1 20 1,1-Dichloroethene 50.0 45.20 ug/L 90 62 -130 5 21 1,2-Dichloropropane 50.0 48.12 ug/L 96 68 -127 2 20 cis-1,3-Dichloropropene 50.0 46.98 ug/L 94 75 -120 4 20 trans-1,3-Dichloropropene 50.0 51.70 ug/L 103 66 -127 3 20 Ethylbenzene 50.0 46.65 ug/L 93 76 -121 4 20 2-Hexanone 200 196.6 ug/L 98 58 -134 5 21 Isopropylbenzene 50.0 48.44 ug/L 97 70 -127 6 20 Methylene Chloride 50.0 44.28 ug/L 89 64 -128 1 20 4-Methyl-2-pentanone (MIBK)200 207.6 ug/L 104 56 -135 2 20 Methyl tert-butyl ether 50.0 52.81 ug/L 106 70 -127 3 20 Styrene 50.0 49.14 ug/L 98 79 -120 6 20 1,1,2,2-Tetrachloroethane 50.0 45.92 ug/L 92 72 -122 7 20 Tetrachloroethene 50.0 46.21 ug/L 92 72 -127 5 20 Toluene 50.0 48.84 ug/L 98 68 -127 1 20 1,2,3-Trichlorobenzene 50.0 41.94 ug/L 84 70 -127 3 20 1,2,4-Trichlorobenzene 50.0 43.98 ug/L 88 73 -124 7 20 1,1,1-Trichloroethane 50.0 45.81 ug/L 92 62 -132 6 20 1,1,2-Trichloroethane 50.0 48.56 ug/L 97 72 -128 3 20 Trichloroethene 50.0 43.48 ug/L 87 70 -125 5 20 Trichlorofluoromethane 50.0 46.90 ug/L 94 57 -144 0 28 Vinyl chloride 50.0 45.76 ug/L 92 53 -141 0 25 m-Xylene & p-Xylene 50.0 47.82 ug/L 96 76 -122 2 20 o-Xylene 50.0 49.16 ug/L 98 77 -120 1 20 1,2-Dibromoethane 50.0 49.53 ug/L 99 81 -118 5 20 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 95 LCSD LCSD Qualifier Limits%Recovery 97Toluene-d8 (Surr)80 -125 994-Bromofluorobenzene (Surr)78 -120 93Dibromofluoromethane (Surr)77 -120 Client Sample ID: Matrix SpikeLab Sample ID: 280-162144-B-8 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 575756 Acetone ND F2 100 68.15 ug/L 68 50 -137 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 25.0 22.13 ug/L 89 69 -126 Chlorobromomethane ND 25.0 20.97 ug/L 84 71 -130 Dichlorobromomethane ND 25.0 20.59 ug/L 82 67 -126 Bromoform ND F2 25.0 18.21 ug/L 73 57 -125 Bromomethane ND 25.0 23.37 ug/L 93 25 -163 2-Butanone (MEK)ND F2 100 72.58 ug/L 73 53 -135 Carbon disulfide ND 25.0 21.84 ug/L 87 56 -128 Carbon tetrachloride ND F1 25.0 22.12 ug/L 88 60 -133 Chlorobenzene ND 25.0 20.69 ug/L 83 78 -118 Eurofins Denver Page 81 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 280-162144-B-8 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 575756 Chlorodibromomethane ND 25.0 19.64 ug/L 79 71 -122 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Chloroethane ND 25.0 24.61 ug/L 98 52 -144 Chloroform ND 25.0 21.73 ug/L 87 68 -128 Chloromethane ND 25.0 21.81 ug/L 87 43 -142 1,2-Dibromo-3-Chloropropane ND F2 25.0 15.07 ug/L 60 58 -122 1,2-Dichlorobenzene ND F2 25.0 20.45 ug/L 82 77 -121 1,3-Dichlorobenzene ND F2 25.0 21.39 ug/L 86 76 -121 1,4-Dichlorobenzene ND F2 25.0 20.57 ug/L 82 76 -119 Dichlorodifluoromethane ND 25.0 22.00 ug/L 88 26 -152 1,1-Dichloroethane ND 25.0 21.59 ug/L 86 66 -130 1,2-Dichloroethane ND 25.0 19.74 ug/L 79 61 -130 cis-1,2-Dichloroethene ND 25.0 23.32 ug/L 93 69 -126 trans-1,2-Dichloroethene ND 25.0 22.09 ug/L 88 66 -129 1,1-Dichloroethene ND 25.0 22.81 ug/L 91 62 -130 1,2-Dichloropropane ND 25.0 21.49 ug/L 86 68 -127 cis-1,3-Dichloropropene ND F1 F2 25.0 18.09 F1 ug/L 72 75 -120 trans-1,3-Dichloropropene ND F2 25.0 19.74 ug/L 79 66 -127 Ethylbenzene ND 25.0 21.67 ug/L 87 76 -121 2-Hexanone ND F2 100 71.57 ug/L 72 58 -134 Isopropylbenzene ND F2 25.0 22.40 ug/L 90 70 -127 Methylene Chloride ND 25.0 20.89 ug/L 84 64 -128 4-Methyl-2-pentanone (MIBK)ND F2 100 75.46 ug/L 75 56 -135 Methyl tert-butyl ether ND F2 25.0 20.84 ug/L 83 70 -127 Styrene ND 25.0 22.30 ug/L 89 79 -120 1,1,2,2-Tetrachloroethane ND F2 25.0 18.07 ug/L 72 72 -122 Tetrachloroethene ND 25.0 21.95 ug/L 88 72 -127 Toluene ND 25.0 22.85 ug/L 91 68 -127 1,2,3-Trichlorobenzene ND F1 F2 25.0 15.51 F1 ug/L 62 70 -127 1,2,4-Trichlorobenzene ND F1 F2 25.0 17.87 F1 ug/L 71 73 -124 1,1,1-Trichloroethane ND 25.0 22.02 ug/L 88 62 -132 1,1,2-Trichloroethane ND 25.0 20.93 ug/L 84 72 -128 Trichloroethene ND 25.0 20.10 ug/L 80 70 -125 Trichlorofluoromethane ND 25.0 23.37 ug/L 93 57 -144 Vinyl chloride ND 25.0 22.54 ug/L 90 53 -141 m-Xylene & p-Xylene ND 25.0 21.89 ug/L 88 76 -122 o-Xylene ND 25.0 22.62 ug/L 90 77 -120 1,2-Dibromoethane ND F1 25.0 19.75 F1 ug/L 79 81 -118 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 93 MS MS Qualifier Limits%Recovery 97Toluene-d8 (Surr)80 -125 1004-Bromofluorobenzene (Surr)78 -120 95Dibromofluoromethane (Surr)77 -120 Eurofins Denver Page 82 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-162144-C-8 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 575756 Acetone ND F2 100 85.86 F2 ug/L 86 50 -137 23 21 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 25.0 26.91 ug/L 108 69 -126 19 20 Chlorobromomethane ND 25.0 25.21 ug/L 101 71 -130 18 20 Dichlorobromomethane ND 25.0 25.09 ug/L 100 67 -126 20 20 Bromoform ND F2 25.0 22.72 F2 ug/L 91 57 -125 22 20 Bromomethane ND 25.0 25.00 ug/L 100 25 -163 7 40 2-Butanone (MEK)ND F2 100 94.52 F2 ug/L 95 53 -135 26 20 Carbon disulfide ND 25.0 26.08 ug/L 104 56 -128 18 20 Carbon tetrachloride ND F1 25.0 26.51 ug/L 106 60 -133 18 20 Chlorobenzene ND 25.0 24.90 ug/L 100 78 -118 18 20 Chlorodibromomethane ND 25.0 24.11 ug/L 96 71 -122 20 20 Chloroethane ND 25.0 26.74 ug/L 107 52 -144 8 30 Chloroform ND 25.0 26.17 ug/L 105 68 -128 19 20 Chloromethane ND 25.0 22.83 ug/L 91 43 -142 5 20 1,2-Dibromo-3-Chloropropane ND F2 25.0 20.17 F2 ug/L 81 58 -122 29 21 1,2-Dichlorobenzene ND F2 25.0 25.34 F2 ug/L 101 77 -121 21 20 1,3-Dichlorobenzene ND F2 25.0 26.28 F2 ug/L 105 76 -121 21 20 1,4-Dichlorobenzene ND F2 25.0 26.01 F2 ug/L 104 76 -119 23 20 Dichlorodifluoromethane ND 25.0 22.75 ug/L 91 26 -152 3 21 1,1-Dichloroethane ND 25.0 25.67 ug/L 103 66 -130 17 20 1,2-Dichloroethane ND 25.0 23.79 ug/L 95 61 -130 19 20 cis-1,2-Dichloroethene ND 25.0 27.44 ug/L 110 69 -126 16 20 trans-1,2-Dichloroethene ND 25.0 26.46 ug/L 106 66 -129 18 20 1,1-Dichloroethene ND 25.0 26.60 ug/L 106 62 -130 15 21 1,2-Dichloropropane ND 25.0 26.09 ug/L 104 68 -127 19 20 cis-1,3-Dichloropropene ND F1 F2 25.0 22.86 F2 ug/L 91 75 -120 23 20 trans-1,3-Dichloropropene ND F2 25.0 25.48 F2 ug/L 102 66 -127 25 20 Ethylbenzene ND 25.0 25.93 ug/L 104 76 -121 18 20 2-Hexanone ND F2 100 89.81 F2 ug/L 90 58 -134 23 21 Isopropylbenzene ND F2 25.0 27.90 F2 ug/L 112 70 -127 22 20 Methylene Chloride ND 25.0 24.23 ug/L 97 64 -128 15 20 4-Methyl-2-pentanone (MIBK)ND F2 100 97.27 F2 ug/L 97 56 -135 25 20 Methyl tert-butyl ether ND F2 25.0 26.01 F2 ug/L 104 70 -127 22 20 Styrene ND 25.0 26.71 ug/L 107 79 -120 18 20 1,1,2,2-Tetrachloroethane ND F2 25.0 22.62 F2 ug/L 90 72 -122 22 20 Tetrachloroethene ND 25.0 25.72 ug/L 103 72 -127 16 20 Toluene ND 25.0 27.44 ug/L 110 68 -127 18 20 1,2,3-Trichlorobenzene ND F1 F2 25.0 21.78 F2 ug/L 87 70 -127 34 20 1,2,4-Trichlorobenzene ND F1 F2 25.0 23.12 F2 ug/L 92 73 -124 26 20 1,1,1-Trichloroethane ND 25.0 26.92 ug/L 108 62 -132 20 20 1,1,2-Trichloroethane ND 25.0 25.71 ug/L 103 72 -128 20 20 Trichloroethene ND 25.0 24.63 ug/L 99 70 -125 20 20 Trichlorofluoromethane ND 25.0 24.51 ug/L 98 57 -144 5 28 Vinyl chloride ND 25.0 22.76 ug/L 91 53 -141 1 25 m-Xylene & p-Xylene ND 25.0 26.01 ug/L 104 76 -122 17 20 o-Xylene ND 25.0 26.34 ug/L 105 77 -120 15 20 1,2-Dibromoethane ND F1 25.0 24.15 ug/L 97 81 -118 20 20 Eurofins Denver Page 83 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-162144-C-8 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 575756 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 92 MSD MSD Qualifier Limits%Recovery 96Toluene-d8 (Surr)80 -125 1034-Bromofluorobenzene (Surr)78 -120 95Dibromofluoromethane (Surr)77 -120 Client Sample ID: Method BlankLab Sample ID: MB 280-575885/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 575885 RL MDL Acetone ND 20.0 ug/L 05/23/22 18:28 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 05/23/22 18:28 1Benzene ND 2.00 ug/L 05/23/22 18:28 1Chlorobromomethane ND 1.00 ug/L 05/23/22 18:28 1Dichlorobromomethane ND 2.00 ug/L 05/23/22 18:28 1Bromoform ND 10.0 ug/L 05/23/22 18:28 1Bromomethane ND 20.0 ug/L 05/23/22 18:28 12-Butanone (MEK) ND 2.00 ug/L 05/23/22 18:28 1Carbon disulfide ND 1.00 ug/L 05/23/22 18:28 1Carbon tetrachloride ND 1.00 ug/L 05/23/22 18:28 1Chlorobenzene ND 1.00 ug/L 05/23/22 18:28 1Chlorodibromomethane ND 4.00 ug/L 05/23/22 18:28 1Chloroethane ND 1.00 ug/L 05/23/22 18:28 1Chloroform ND 2.00 ug/L 05/23/22 18:28 1Chloromethane ND 1.00 ug/L 05/23/22 18:28 1Cyclohexane ND 5.00 ug/L 05/23/22 18:28 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/23/22 18:28 11,2-Dichlorobenzene ND 1.00 ug/L 05/23/22 18:28 11,3-Dichlorobenzene ND 1.00 ug/L 05/23/22 18:28 11,4-Dichlorobenzene ND 2.00 ug/L 05/23/22 18:28 1Dichlorodifluoromethane ND 1.00 ug/L 05/23/22 18:28 11,1-Dichloroethane ND 1.00 ug/L 05/23/22 18:28 11,2-Dichloroethane ND 1.00 ug/L 05/23/22 18:28 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 18:28 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/23/22 18:28 11,1-Dichloroethene ND 1.00 ug/L 05/23/22 18:28 11,2-Dichloropropane ND 1.00 ug/L 05/23/22 18:28 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/23/22 18:28 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/23/22 18:28 11,4-Dioxane ND 1.00 ug/L 05/23/22 18:28 1Ethylbenzene ND 5.00 ug/L 05/23/22 18:28 12-Hexanone ND 1.00 ug/L 05/23/22 18:28 1Isopropylbenzene ND 5.00 ug/L 05/23/22 18:28 1Methyl acetate ND 1.00 ug/L 05/23/22 18:28 1Methylcyclohexane ND 5.00 ug/L 05/23/22 18:28 1Methylene Chloride ND 5.00 ug/L 05/23/22 18:28 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 05/23/22 18:28 1Methyl tert-butyl ether ND 1.00 ug/L 05/23/22 18:28 1Styrene Eurofins Denver Page 84 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-575885/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 575885 RL MDL 1,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/23/22 18:28 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 05/23/22 18:28 1Tetrachloroethene ND 1.00 ug/L 05/23/22 18:28 1Toluene ND 1.00 ug/L 05/23/22 18:28 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/23/22 18:28 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/23/22 18:28 11,1,1-Trichloroethane ND 1.00 ug/L 05/23/22 18:28 11,1,2-Trichloroethane ND 1.00 ug/L 05/23/22 18:28 1Trichloroethene ND 2.00 ug/L 05/23/22 18:28 1Trichlorofluoromethane ND 1.00 ug/L 05/23/22 18:28 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/23/22 18:28 1Vinyl chloride ND 2.00 ug/L 05/23/22 18:28 1m-Xylene & p-Xylene ND 1.00 ug/L 05/23/22 18:28 1o-Xylene ND 5.00 ug/L 05/23/22 18:28 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)109 70 -127 05/23/22 18:28 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 104 05/23/22 18:28 1Toluene-d8 (Surr)80 -125 107 05/23/22 18:28 14-Bromofluorobenzene (Surr)78 -120 101 05/23/22 18:28 1Dibromofluoromethane (Surr)77 -120 Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575885/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 575885 Acetone 100 96.26 ug/L 96 50 -137 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 25.0 25.08 ug/L 100 69 -126 Chlorobromomethane 25.0 22.51 ug/L 90 71 -130 Dichlorobromomethane 25.0 25.10 ug/L 100 67 -126 Bromoform 25.0 22.10 ug/L 88 57 -125 Bromomethane 25.0 25.19 ug/L 101 25 -163 2-Butanone (MEK)100 89.32 ug/L 89 53 -135 Carbon disulfide 25.0 24.14 ug/L 97 56 -128 Carbon tetrachloride 25.0 23.02 ug/L 92 60 -133 Chlorobenzene 25.0 24.90 ug/L 100 78 -118 Chlorodibromomethane 25.0 24.00 ug/L 96 71 -122 Chloroethane 25.0 28.88 ug/L 116 52 -144 Chloroform 25.0 25.12 ug/L 100 68 -128 Chloromethane 25.0 30.45 ug/L 122 43 -142 1,2-Dibromo-3-Chloropropane 25.0 18.23 ug/L 73 58 -122 1,2-Dichlorobenzene 25.0 25.07 ug/L 100 77 -121 1,3-Dichlorobenzene 25.0 24.07 ug/L 96 76 -121 1,4-Dichlorobenzene 25.0 24.11 ug/L 96 76 -119 Dichlorodifluoromethane 25.0 29.17 ug/L 117 26 -152 1,1-Dichloroethane 25.0 25.51 ug/L 102 66 -130 1,2-Dichloroethane 25.0 24.66 ug/L 99 61 -130 cis-1,2-Dichloroethene 25.0 23.07 ug/L 92 69 -126 Eurofins Denver Page 85 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575885/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 575885 trans-1,2-Dichloroethene 25.0 23.30 ug/L 93 66 -129 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,1-Dichloroethene 25.0 22.34 ug/L 89 62 -130 1,2-Dichloropropane 25.0 27.23 ug/L 109 68 -127 cis-1,3-Dichloropropene 25.0 25.45 ug/L 102 75 -120 trans-1,3-Dichloropropene 25.0 24.60 ug/L 98 66 -127 Ethylbenzene 25.0 24.99 ug/L 100 76 -121 2-Hexanone 100 98.87 ug/L 99 58 -134 Isopropylbenzene 25.0 26.10 ug/L 104 70 -127 Methylene Chloride 25.0 25.18 ug/L 101 64 -128 4-Methyl-2-pentanone (MIBK)100 103.8 ug/L 104 56 -135 Methyl tert-butyl ether 25.0 22.56 ug/L 90 70 -127 Styrene 25.0 26.33 ug/L 105 79 -120 1,1,2,2-Tetrachloroethane 25.0 24.45 ug/L 98 72 -122 Tetrachloroethene 25.0 22.25 ug/L 89 72 -127 Toluene 25.0 24.75 ug/L 99 68 -127 1,2,3-Trichlorobenzene 25.0 21.30 ug/L 85 70 -127 1,2,4-Trichlorobenzene 25.0 22.07 ug/L 88 73 -124 1,1,1-Trichloroethane 25.0 23.49 ug/L 94 62 -132 1,1,2-Trichloroethane 25.0 24.14 ug/L 97 72 -128 Trichloroethene 25.0 25.37 ug/L 101 70 -125 Trichlorofluoromethane 25.0 27.01 ug/L 108 57 -144 Vinyl chloride 25.0 27.60 ug/L 110 53 -141 m-Xylene & p-Xylene 25.0 25.55 ug/L 102 76 -122 o-Xylene 25.0 25.01 ug/L 100 77 -120 1,2-Dibromoethane 25.0 23.73 ug/L 95 81 -118 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 105 LCS LCS Qualifier Limits%Recovery 105Toluene-d8 (Surr)80 -125 1064-Bromofluorobenzene (Surr)78 -120 96Dibromofluoromethane (Surr)77 -120 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-575885/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 575885 Acetone 100 108.6 ug/L 109 50 -137 12 21 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 25.0 26.94 ug/L 108 69 -126 7 20 Chlorobromomethane 25.0 24.71 ug/L 99 71 -130 9 20 Dichlorobromomethane 25.0 26.80 ug/L 107 67 -126 7 20 Bromoform 25.0 23.52 ug/L 94 57 -125 6 20 Bromomethane 25.0 25.35 ug/L 101 25 -163 1 40 2-Butanone (MEK)100 101.2 ug/L 101 53 -135 12 20 Carbon disulfide 25.0 25.88 ug/L 104 56 -128 7 20 Carbon tetrachloride 25.0 25.10 ug/L 100 60 -133 9 20 Chlorobenzene 25.0 26.06 ug/L 104 78 -118 5 20 Chlorodibromomethane 25.0 25.26 ug/L 101 71 -122 5 20 Eurofins Denver Page 86 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-575885/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 575885 Chloroethane 25.0 27.55 ug/L 110 52 -144 5 30 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Chloroform 25.0 26.68 ug/L 107 68 -128 6 20 Chloromethane 25.0 29.33 ug/L 117 43 -142 4 20 1,2-Dibromo-3-Chloropropane 25.0 20.65 ug/L 83 58 -122 12 21 1,2-Dichlorobenzene 25.0 26.07 ug/L 104 77 -121 4 20 1,3-Dichlorobenzene 25.0 25.28 ug/L 101 76 -121 5 20 1,4-Dichlorobenzene 25.0 25.16 ug/L 101 76 -119 4 20 Dichlorodifluoromethane 25.0 27.74 ug/L 111 26 -152 5 21 1,1-Dichloroethane 25.0 27.05 ug/L 108 66 -130 6 20 1,2-Dichloroethane 25.0 26.37 ug/L 105 61 -130 7 20 cis-1,2-Dichloroethene 25.0 24.70 ug/L 99 69 -126 7 20 trans-1,2-Dichloroethene 25.0 24.95 ug/L 100 66 -129 7 20 1,1-Dichloroethene 25.0 23.99 ug/L 96 62 -130 7 21 1,2-Dichloropropane 25.0 28.58 ug/L 114 68 -127 5 20 cis-1,3-Dichloropropene 25.0 27.87 ug/L 111 75 -120 9 20 trans-1,3-Dichloropropene 25.0 26.86 ug/L 107 66 -127 9 20 Ethylbenzene 25.0 26.27 ug/L 105 76 -121 5 20 2-Hexanone 100 108.2 ug/L 108 58 -134 9 21 Isopropylbenzene 25.0 27.68 ug/L 111 70 -127 6 20 Methylene Chloride 25.0 26.93 ug/L 108 64 -128 7 20 4-Methyl-2-pentanone (MIBK)100 114.4 ug/L 114 56 -135 10 20 Methyl tert-butyl ether 25.0 24.68 ug/L 99 70 -127 9 20 Styrene 25.0 27.87 ug/L 111 79 -120 6 20 1,1,2,2-Tetrachloroethane 25.0 27.99 ug/L 112 72 -122 14 20 Tetrachloroethene 25.0 24.19 ug/L 97 72 -127 8 20 Toluene 25.0 26.48 ug/L 106 68 -127 7 20 1,2,3-Trichlorobenzene 25.0 22.51 ug/L 90 70 -127 6 20 1,2,4-Trichlorobenzene 25.0 24.25 ug/L 97 73 -124 9 20 1,1,1-Trichloroethane 25.0 25.25 ug/L 101 62 -132 7 20 1,1,2-Trichloroethane 25.0 26.05 ug/L 104 72 -128 8 20 Trichloroethene 25.0 25.68 ug/L 103 70 -125 1 20 Trichlorofluoromethane 25.0 25.46 ug/L 102 57 -144 6 28 Vinyl chloride 25.0 27.00 ug/L 108 53 -141 2 25 m-Xylene & p-Xylene 25.0 26.97 ug/L 108 76 -122 5 20 o-Xylene 25.0 26.12 ug/L 104 77 -120 4 20 1,2-Dibromoethane 25.0 25.25 ug/L 101 81 -118 6 20 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 106 LCSD LCSD Qualifier Limits%Recovery 104Toluene-d8 (Surr)80 -125 1054-Bromofluorobenzene (Surr)78 -120 97Dibromofluoromethane (Surr)77 -120 Eurofins Denver Page 87 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-576078/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 RL MDL Acetone ND 20.0 ug/L 05/24/22 22:25 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 05/24/22 22:25 1Benzene ND 2.00 ug/L 05/24/22 22:25 1Chlorobromomethane ND 1.00 ug/L 05/24/22 22:25 1Dichlorobromomethane ND 2.00 ug/L 05/24/22 22:25 1Bromoform ND 10.0 ug/L 05/24/22 22:25 1Bromomethane ND 20.0 ug/L 05/24/22 22:25 12-Butanone (MEK) ND 2.00 ug/L 05/24/22 22:25 1Carbon disulfide ND 1.00 ug/L 05/24/22 22:25 1Carbon tetrachloride ND 1.00 ug/L 05/24/22 22:25 1Chlorobenzene ND 1.00 ug/L 05/24/22 22:25 1Chlorodibromomethane ND 4.00 ug/L 05/24/22 22:25 1Chloroethane ND 1.00 ug/L 05/24/22 22:25 1Chloroform ND 2.00 ug/L 05/24/22 22:25 1Chloromethane ND 1.00 ug/L 05/24/22 22:25 1Cyclohexane ND 5.00 ug/L 05/24/22 22:25 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 05/24/22 22:25 11,2-Dichlorobenzene ND 1.00 ug/L 05/24/22 22:25 11,3-Dichlorobenzene ND 1.00 ug/L 05/24/22 22:25 11,4-Dichlorobenzene ND 2.00 ug/L 05/24/22 22:25 1Dichlorodifluoromethane ND 1.00 ug/L 05/24/22 22:25 11,1-Dichloroethane ND 1.00 ug/L 05/24/22 22:25 11,2-Dichloroethane ND 1.00 ug/L 05/24/22 22:25 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/24/22 22:25 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/24/22 22:25 11,1-Dichloroethene ND 1.00 ug/L 05/24/22 22:25 11,2-Dichloropropane ND 1.00 ug/L 05/24/22 22:25 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/24/22 22:25 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/24/22 22:25 11,4-Dioxane ND 1.00 ug/L 05/24/22 22:25 1Ethylbenzene ND 5.00 ug/L 05/24/22 22:25 12-Hexanone ND 1.00 ug/L 05/24/22 22:25 1Isopropylbenzene ND 5.00 ug/L 05/24/22 22:25 1Methyl acetate ND 1.00 ug/L 05/24/22 22:25 1Methylcyclohexane ND 5.00 ug/L 05/24/22 22:25 1Methylene Chloride ND 5.00 ug/L 05/24/22 22:25 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 05/24/22 22:25 1Methyl tert-butyl ether ND 1.00 ug/L 05/24/22 22:25 1Styrene ND 1.00 ug/L 05/24/22 22:25 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/24/22 22:25 1Tetrachloroethene ND 1.00 ug/L 05/24/22 22:25 1Toluene ND 1.00 ug/L 05/24/22 22:25 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/24/22 22:25 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/24/22 22:25 11,1,1-Trichloroethane ND 1.00 ug/L 05/24/22 22:25 11,1,2-Trichloroethane ND 1.00 ug/L 05/24/22 22:25 1Trichloroethene ND 2.00 ug/L 05/24/22 22:25 1Trichlorofluoromethane ND 1.00 ug/L 05/24/22 22:25 11,1,2-Trichlorotrifluoroethane Eurofins Denver Page 88 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-576078/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 RL MDL Vinyl chloride ND 1.00 ug/L 05/24/22 22:25 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 2.00 ug/L 05/24/22 22:25 1m-Xylene & p-Xylene ND 1.00 ug/L 05/24/22 22:25 1o-Xylene ND 5.00 ug/L 05/24/22 22:25 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)102 70 -127 05/24/22 22:25 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 101 05/24/22 22:25 1Toluene-d8 (Surr)80 -125 112 05/24/22 22:25 14-Bromofluorobenzene (Surr)78 -120 100 05/24/22 22:25 1Dibromofluoromethane (Surr)77 -120 Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-576078/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 Acetone 100 73.04 ug/L 73 50 -137 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 25.0 22.48 ug/L 90 69 -126 Chlorobromomethane 25.0 19.34 ug/L 77 71 -130 Dichlorobromomethane 25.0 21.39 ug/L 86 67 -126 Bromoform 25.0 20.02 ug/L 80 57 -125 Bromomethane 25.0 27.55 ug/L 110 25 -163 2-Butanone (MEK)100 83.39 ug/L 83 53 -135 Carbon disulfide 25.0 21.37 ug/L 85 56 -128 Carbon tetrachloride 25.0 23.28 ug/L 93 60 -133 Chlorobenzene 25.0 22.00 ug/L 88 78 -118 Chlorodibromomethane 25.0 21.14 ug/L 85 71 -122 Chloroethane 25.0 25.26 ug/L 101 52 -144 Chloroform 25.0 21.65 ug/L 87 68 -128 Chloromethane 25.0 21.92 ug/L 88 43 -142 1,2-Dibromo-3-Chloropropane 25.0 17.61 ug/L 70 58 -122 1,2-Dichlorobenzene 25.0 22.96 ug/L 92 77 -121 1,3-Dichlorobenzene 25.0 23.77 ug/L 95 76 -121 1,4-Dichlorobenzene 25.0 22.70 ug/L 91 76 -119 Dichlorodifluoromethane 25.0 22.30 ug/L 89 26 -152 1,1-Dichloroethane 25.0 21.44 ug/L 86 66 -130 1,2-Dichloroethane 25.0 19.28 ug/L 77 61 -130 cis-1,2-Dichloroethene 25.0 22.51 ug/L 90 69 -126 trans-1,2-Dichloroethene 25.0 21.04 ug/L 84 66 -129 1,1-Dichloroethene 25.0 22.25 ug/L 89 62 -130 1,2-Dichloropropane 25.0 21.91 ug/L 88 68 -127 cis-1,3-Dichloropropene 25.0 20.94 ug/L 84 75 -120 trans-1,3-Dichloropropene 25.0 22.14 ug/L 89 66 -127 Ethylbenzene 25.0 22.96 ug/L 92 76 -121 2-Hexanone 100 82.59 ug/L 83 58 -134 Isopropylbenzene 25.0 26.26 ug/L 105 70 -127 Methylene Chloride 25.0 19.89 ug/L 80 64 -128 4-Methyl-2-pentanone (MIBK)100 85.86 ug/L 86 56 -135 Eurofins Denver Page 89 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-576078/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 Methyl tert-butyl ether 25.0 21.86 ug/L 87 70 -127 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Styrene 25.0 24.17 ug/L 97 79 -120 1,1,2,2-Tetrachloroethane 25.0 23.22 ug/L 93 72 -122 Tetrachloroethene 25.0 20.54 ug/L 82 72 -127 Toluene 25.0 23.02 ug/L 92 68 -127 1,2,3-Trichlorobenzene 25.0 17.60 ug/L 70 70 -127 1,2,4-Trichlorobenzene 25.0 19.04 ug/L 76 73 -124 1,1,1-Trichloroethane 25.0 23.20 ug/L 93 62 -132 1,1,2-Trichloroethane 25.0 22.24 ug/L 89 72 -128 Trichloroethene 25.0 21.32 ug/L 85 70 -125 Trichlorofluoromethane 25.0 24.37 ug/L 97 57 -144 Vinyl chloride 25.0 22.41 ug/L 90 53 -141 m-Xylene & p-Xylene 25.0 22.77 ug/L 91 76 -122 o-Xylene 25.0 23.41 ug/L 94 77 -120 1,2-Dibromoethane 25.0 21.27 ug/L 85 81 -118 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 100 LCS LCS Qualifier Limits%Recovery 101Toluene-d8 (Surr)80 -125 1124-Bromofluorobenzene (Surr)78 -120 94Dibromofluoromethane (Surr)77 -120 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-576078/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 Acetone 100 76.90 ug/L 77 50 -137 5 21 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 25.0 22.73 ug/L 91 69 -126 1 20 Chlorobromomethane 25.0 20.54 ug/L 82 71 -130 6 20 Dichlorobromomethane 25.0 21.75 ug/L 87 67 -126 2 20 Bromoform 25.0 20.42 ug/L 82 57 -125 2 20 Bromomethane 25.0 26.09 ug/L 104 25 -163 5 40 2-Butanone (MEK)100 87.71 ug/L 88 53 -135 5 20 Carbon disulfide 25.0 21.41 ug/L 86 56 -128 0 20 Carbon tetrachloride 25.0 23.40 ug/L 94 60 -133 0 20 Chlorobenzene 25.0 22.78 ug/L 91 78 -118 4 20 Chlorodibromomethane 25.0 21.71 ug/L 87 71 -122 3 20 Chloroethane 25.0 25.68 ug/L 103 52 -144 2 30 Chloroform 25.0 22.57 ug/L 90 68 -128 4 20 Chloromethane 25.0 21.53 ug/L 86 43 -142 2 20 1,2-Dibromo-3-Chloropropane 25.0 18.83 ug/L 75 58 -122 7 21 1,2-Dichlorobenzene 25.0 23.12 ug/L 92 77 -121 1 20 1,3-Dichlorobenzene 25.0 23.88 ug/L 96 76 -121 0 20 1,4-Dichlorobenzene 25.0 23.61 ug/L 94 76 -119 4 20 Dichlorodifluoromethane 25.0 21.87 ug/L 87 26 -152 2 21 1,1-Dichloroethane 25.0 21.96 ug/L 88 66 -130 2 20 1,2-Dichloroethane 25.0 21.15 ug/L 85 61 -130 9 20 Eurofins Denver Page 90 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-576078/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 cis-1,2-Dichloroethene 25.0 23.68 ug/L 95 69 -126 5 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD trans-1,2-Dichloroethene 25.0 22.57 ug/L 90 66 -129 7 20 1,1-Dichloroethene 25.0 22.98 ug/L 92 62 -130 3 21 1,2-Dichloropropane 25.0 21.93 ug/L 88 68 -127 0 20 cis-1,3-Dichloropropene 25.0 21.05 ug/L 84 75 -120 1 20 trans-1,3-Dichloropropene 25.0 22.88 ug/L 92 66 -127 3 20 Ethylbenzene 25.0 23.54 ug/L 94 76 -121 3 20 2-Hexanone 100 90.27 ug/L 90 58 -134 9 21 Isopropylbenzene 25.0 26.73 ug/L 107 70 -127 2 20 Methylene Chloride 25.0 20.49 ug/L 82 64 -128 3 20 4-Methyl-2-pentanone (MIBK)100 88.43 ug/L 88 56 -135 3 20 Methyl tert-butyl ether 25.0 22.74 ug/L 91 70 -127 4 20 Styrene 25.0 24.47 ug/L 98 79 -120 1 20 1,1,2,2-Tetrachloroethane 25.0 22.95 ug/L 92 72 -122 1 20 Tetrachloroethene 25.0 21.97 ug/L 88 72 -127 7 20 Toluene 25.0 24.00 ug/L 96 68 -127 4 20 1,2,3-Trichlorobenzene 25.0 19.29 ug/L 77 70 -127 9 20 1,2,4-Trichlorobenzene 25.0 19.94 ug/L 80 73 -124 5 20 1,1,1-Trichloroethane 25.0 23.15 ug/L 93 62 -132 0 20 1,1,2-Trichloroethane 25.0 22.22 ug/L 89 72 -128 0 20 Trichloroethene 25.0 22.08 ug/L 88 70 -125 3 20 Trichlorofluoromethane 25.0 23.55 ug/L 94 57 -144 3 28 Vinyl chloride 25.0 21.52 ug/L 86 53 -141 4 25 m-Xylene & p-Xylene 25.0 24.39 ug/L 98 76 -122 7 20 o-Xylene 25.0 24.52 ug/L 98 77 -120 5 20 1,2-Dibromoethane 25.0 22.70 ug/L 91 81 -118 6 20 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 99 LCSD LCSD Qualifier Limits%Recovery 102Toluene-d8 (Surr)80 -125 1094-Bromofluorobenzene (Surr)78 -120 98Dibromofluoromethane (Surr)77 -120 Client Sample ID: MW-13Lab Sample ID: 280-162293-7 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 Acetone ND 100 74.64 ug/L 75 50 -137 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 25.0 22.82 ug/L 91 69 -126 Chlorobromomethane ND 25.0 20.53 ug/L 82 71 -130 Dichlorobromomethane ND 25.0 21.93 ug/L 88 67 -126 Bromoform ND 25.0 19.56 ug/L 78 57 -125 Bromomethane ND 25.0 27.12 ug/L 108 25 -163 2-Butanone (MEK)ND 100 85.17 ug/L 85 53 -135 Carbon disulfide ND 25.0 21.49 ug/L 86 56 -128 Carbon tetrachloride ND 25.0 23.74 ug/L 95 60 -133 Chlorobenzene ND 25.0 22.75 ug/L 91 78 -118 Eurofins Denver Page 91 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-13Lab Sample ID: 280-162293-7 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 Chlorodibromomethane ND 25.0 20.96 ug/L 84 71 -122 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Chloroethane ND 25.0 26.20 ug/L 105 52 -144 Chloroform ND 25.0 22.97 ug/L 92 68 -128 Chloromethane ND 25.0 21.87 ug/L 87 43 -142 1,2-Dibromo-3-Chloropropane ND 25.0 19.35 ug/L 77 58 -122 1,2-Dichlorobenzene ND 25.0 23.19 ug/L 93 77 -121 1,3-Dichlorobenzene ND 25.0 23.85 ug/L 95 76 -121 1,4-Dichlorobenzene ND 25.0 22.34 ug/L 89 76 -119 Dichlorodifluoromethane ND 25.0 21.81 ug/L 87 26 -152 1,1-Dichloroethane 2.76 25.0 24.14 ug/L 86 66 -130 1,2-Dichloroethane ND 25.0 21.09 ug/L 84 61 -130 cis-1,2-Dichloroethene 84.5 F1 25.0 98.60 F1 ug/L 57 69 -126 trans-1,2-Dichloroethene ND 25.0 22.57 ug/L 88 66 -129 1,1-Dichloroethene 1.21 25.0 23.75 ug/L 90 62 -130 1,2-Dichloropropane ND 25.0 22.24 ug/L 89 68 -127 cis-1,3-Dichloropropene ND 25.0 19.99 ug/L 80 75 -120 trans-1,3-Dichloropropene ND 25.0 21.17 ug/L 85 66 -127 Ethylbenzene ND 25.0 24.02 ug/L 96 76 -121 2-Hexanone ND 100 87.10 ug/L 87 58 -134 Isopropylbenzene ND 25.0 26.48 ug/L 106 70 -127 Methylene Chloride ND 25.0 20.90 ug/L 84 64 -128 4-Methyl-2-pentanone (MIBK)ND 100 91.07 ug/L 91 56 -135 Methyl tert-butyl ether ND 25.0 22.45 ug/L 90 70 -127 Styrene ND 25.0 24.49 ug/L 98 79 -120 1,1,2,2-Tetrachloroethane ND 25.0 23.34 ug/L 93 72 -122 Tetrachloroethene ND 25.0 22.01 ug/L 88 72 -127 Toluene ND 25.0 23.96 ug/L 96 68 -127 1,2,3-Trichlorobenzene ND 25.0 19.11 ug/L 76 70 -127 1,2,4-Trichlorobenzene ND 25.0 19.00 ug/L 76 73 -124 1,1,1-Trichloroethane ND 25.0 23.83 ug/L 95 62 -132 1,1,2-Trichloroethane ND 25.0 21.74 ug/L 87 72 -128 Trichloroethene ND 25.0 22.61 ug/L 88 70 -125 Trichlorofluoromethane ND 25.0 24.30 ug/L 97 57 -144 Vinyl chloride ND 25.0 22.10 ug/L 88 53 -141 m-Xylene & p-Xylene ND 25.0 23.80 ug/L 95 76 -122 o-Xylene ND 25.0 24.07 ug/L 96 77 -120 1,2-Dibromoethane ND 25.0 21.45 ug/L 86 81 -118 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 102 MS MS Qualifier Limits%Recovery 103Toluene-d8 (Surr)80 -125 1114-Bromofluorobenzene (Surr)78 -120 97Dibromofluoromethane (Surr)77 -120 Eurofins Denver Page 92 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-13Lab Sample ID: 280-162293-7 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 Acetone ND 100 80.88 ug/L 81 50 -137 8 21 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 25.0 22.52 ug/L 90 69 -126 1 20 Chlorobromomethane ND 25.0 20.42 ug/L 82 71 -130 1 20 Dichlorobromomethane ND 25.0 22.32 ug/L 89 67 -126 2 20 Bromoform ND 25.0 20.55 ug/L 82 57 -125 5 20 Bromomethane ND 25.0 26.78 ug/L 107 25 -163 1 40 2-Butanone (MEK)ND 100 86.42 ug/L 86 53 -135 1 20 Carbon disulfide ND 25.0 20.72 ug/L 83 56 -128 4 20 Carbon tetrachloride ND 25.0 21.93 ug/L 88 60 -133 8 20 Chlorobenzene ND 25.0 23.31 ug/L 93 78 -118 2 20 Chlorodibromomethane ND 25.0 22.08 ug/L 88 71 -122 5 20 Chloroethane ND 25.0 25.16 ug/L 101 52 -144 4 30 Chloroform ND 25.0 23.45 ug/L 94 68 -128 2 20 Chloromethane ND 25.0 21.21 ug/L 85 43 -142 3 20 1,2-Dibromo-3-Chloropropane ND 25.0 21.25 ug/L 85 58 -122 9 21 1,2-Dichlorobenzene ND 25.0 24.21 ug/L 97 77 -121 4 20 1,3-Dichlorobenzene ND 25.0 24.41 ug/L 98 76 -121 2 20 1,4-Dichlorobenzene ND 25.0 23.23 ug/L 93 76 -119 4 20 Dichlorodifluoromethane ND 25.0 20.73 ug/L 83 26 -152 5 21 1,1-Dichloroethane 2.76 25.0 24.01 ug/L 85 66 -130 1 20 1,2-Dichloroethane ND 25.0 20.21 ug/L 81 61 -130 4 20 cis-1,2-Dichloroethene 84.5 F1 25.0 96.13 F1 ug/L 47 69 -126 3 20 trans-1,2-Dichloroethene ND 25.0 22.66 ug/L 88 66 -129 0 20 1,1-Dichloroethene 1.21 25.0 23.23 ug/L 88 62 -130 2 21 1,2-Dichloropropane ND 25.0 22.36 ug/L 89 68 -127 1 20 cis-1,3-Dichloropropene ND 25.0 20.04 ug/L 80 75 -120 0 20 trans-1,3-Dichloropropene ND 25.0 21.95 ug/L 88 66 -127 4 20 Ethylbenzene ND 25.0 23.39 ug/L 94 76 -121 3 20 2-Hexanone ND 100 92.45 ug/L 92 58 -134 6 21 Isopropylbenzene ND 25.0 26.39 ug/L 106 70 -127 0 20 Methylene Chloride ND 25.0 20.41 ug/L 82 64 -128 2 20 4-Methyl-2-pentanone (MIBK)ND 100 94.37 ug/L 94 56 -135 4 20 Methyl tert-butyl ether ND 25.0 21.84 ug/L 87 70 -127 3 20 Styrene ND 25.0 24.43 ug/L 98 79 -120 0 20 1,1,2,2-Tetrachloroethane ND 25.0 24.10 ug/L 96 72 -122 3 20 Tetrachloroethene ND 25.0 21.35 ug/L 85 72 -127 3 20 Toluene ND 25.0 23.56 ug/L 94 68 -127 2 20 1,2,3-Trichlorobenzene ND 25.0 20.02 ug/L 80 70 -127 5 20 1,2,4-Trichlorobenzene ND 25.0 20.30 ug/L 81 73 -124 7 20 1,1,1-Trichloroethane ND 25.0 23.39 ug/L 94 62 -132 2 20 1,1,2-Trichloroethane ND 25.0 22.63 ug/L 91 72 -128 4 20 Trichloroethene ND 25.0 21.31 ug/L 83 70 -125 6 20 Trichlorofluoromethane ND 25.0 23.24 ug/L 93 57 -144 4 28 Vinyl chloride ND 25.0 21.22 ug/L 85 53 -141 4 25 m-Xylene & p-Xylene ND 25.0 23.93 ug/L 96 76 -122 1 20 o-Xylene ND 25.0 24.06 ug/L 96 77 -120 0 20 1,2-Dibromoethane ND 25.0 22.04 ug/L 88 81 -118 3 20 Eurofins Denver Page 93 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-13Lab Sample ID: 280-162293-7 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 101 MSD MSD Qualifier Limits%Recovery 102Toluene-d8 (Surr)80 -125 1114-Bromofluorobenzene (Surr)78 -120 99Dibromofluoromethane (Surr)77 -120 Client Sample ID: MW-14Lab Sample ID: 280-162293-11 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 Acetone ND 100 83.43 ug/L 83 50 -137 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 25.0 22.31 ug/L 89 69 -126 Chlorobromomethane ND 25.0 19.72 ug/L 79 71 -130 Dichlorobromomethane ND 25.0 21.26 ug/L 85 67 -126 Bromoform ND 25.0 21.08 ug/L 84 57 -125 Bromomethane ND 25.0 24.45 ug/L 98 25 -163 2-Butanone (MEK)ND 100 89.19 ug/L 89 53 -135 Carbon disulfide ND 25.0 20.79 ug/L 83 56 -128 Carbon tetrachloride ND 25.0 22.96 ug/L 92 60 -133 Chlorobenzene ND 25.0 23.55 ug/L 94 78 -118 Chlorodibromomethane ND 25.0 21.63 ug/L 87 71 -122 Chloroethane ND 25.0 25.73 ug/L 103 52 -144 Chloroform ND 25.0 23.16 ug/L 93 68 -128 Chloromethane ND 25.0 21.16 ug/L 85 43 -142 1,2-Dibromo-3-Chloropropane ND 25.0 21.27 ug/L 85 58 -122 1,2-Dichlorobenzene ND 25.0 24.29 ug/L 97 77 -121 1,3-Dichlorobenzene ND 25.0 25.03 ug/L 100 76 -121 1,4-Dichlorobenzene ND 25.0 23.30 ug/L 93 76 -119 Dichlorodifluoromethane ND 25.0 21.79 ug/L 87 26 -152 1,1-Dichloroethane ND 25.0 21.72 ug/L 87 66 -130 1,2-Dichloroethane ND 25.0 20.31 ug/L 81 61 -130 cis-1,2-Dichloroethene ND 25.0 23.62 ug/L 91 69 -126 trans-1,2-Dichloroethene ND 25.0 21.47 ug/L 86 66 -129 1,1-Dichloroethene ND 25.0 22.57 ug/L 90 62 -130 1,2-Dichloropropane ND 25.0 22.58 ug/L 90 68 -127 cis-1,3-Dichloropropene ND 25.0 20.24 ug/L 81 75 -120 trans-1,3-Dichloropropene ND 25.0 21.79 ug/L 87 66 -127 Ethylbenzene ND 25.0 24.06 ug/L 96 76 -121 2-Hexanone ND 100 96.07 ug/L 96 58 -134 Isopropylbenzene ND 25.0 26.42 ug/L 106 70 -127 Methylene Chloride ND 25.0 20.99 ug/L 84 64 -128 4-Methyl-2-pentanone (MIBK)ND 100 95.70 ug/L 96 56 -135 Methyl tert-butyl ether ND 25.0 22.51 ug/L 90 70 -127 Styrene ND 25.0 24.92 ug/L 100 79 -120 1,1,2,2-Tetrachloroethane ND 25.0 24.90 ug/L 100 72 -122 Tetrachloroethene ND 25.0 21.19 ug/L 85 72 -127 Toluene ND 25.0 23.32 ug/L 93 68 -127 1,2,3-Trichlorobenzene ND 25.0 21.60 ug/L 86 70 -127 Eurofins Denver Page 94 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-14Lab Sample ID: 280-162293-11 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 1,2,4-Trichlorobenzene ND 25.0 20.90 ug/L 84 73 -124 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,1,1-Trichloroethane ND 25.0 23.02 ug/L 92 62 -132 1,1,2-Trichloroethane ND 25.0 22.74 ug/L 91 72 -128 Trichloroethene ND 25.0 21.40 ug/L 86 70 -125 Trichlorofluoromethane ND 25.0 24.29 ug/L 97 57 -144 Vinyl chloride ND 25.0 21.83 ug/L 87 53 -141 m-Xylene & p-Xylene ND 25.0 24.25 ug/L 97 76 -122 o-Xylene ND 25.0 24.45 ug/L 98 77 -120 1,2-Dibromoethane ND 25.0 23.16 ug/L 93 81 -118 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 100 MS MS Qualifier Limits%Recovery 102Toluene-d8 (Surr)80 -125 1104-Bromofluorobenzene (Surr)78 -120 98Dibromofluoromethane (Surr)77 -120 Client Sample ID: MW-14Lab Sample ID: 280-162293-11 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 Acetone ND 100 80.13 ug/L 80 50 -137 4 21 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 25.0 21.78 ug/L 87 69 -126 2 20 Chlorobromomethane ND 25.0 19.79 ug/L 79 71 -130 0 20 Dichlorobromomethane ND 25.0 21.69 ug/L 87 67 -126 2 20 Bromoform ND 25.0 20.41 ug/L 82 57 -125 3 20 Bromomethane ND 25.0 23.34 ug/L 93 25 -163 5 40 2-Butanone (MEK)ND 100 87.33 ug/L 87 53 -135 2 20 Carbon disulfide ND 25.0 20.20 ug/L 81 56 -128 3 20 Carbon tetrachloride ND 25.0 22.06 ug/L 88 60 -133 4 20 Chlorobenzene ND 25.0 21.71 ug/L 87 78 -118 8 20 Chlorodibromomethane ND 25.0 21.46 ug/L 86 71 -122 1 20 Chloroethane ND 25.0 25.73 ug/L 103 52 -144 0 30 Chloroform ND 25.0 22.38 ug/L 90 68 -128 3 20 Chloromethane ND 25.0 21.02 ug/L 84 43 -142 1 20 1,2-Dibromo-3-Chloropropane ND 25.0 20.54 ug/L 82 58 -122 3 21 1,2-Dichlorobenzene ND 25.0 23.13 ug/L 93 77 -121 5 20 1,3-Dichlorobenzene ND 25.0 23.18 ug/L 93 76 -121 8 20 1,4-Dichlorobenzene ND 25.0 22.71 ug/L 91 76 -119 3 20 Dichlorodifluoromethane ND 25.0 20.86 ug/L 83 26 -152 4 21 1,1-Dichloroethane ND 25.0 21.01 ug/L 84 66 -130 3 20 1,2-Dichloroethane ND 25.0 21.44 ug/L 86 61 -130 5 20 cis-1,2-Dichloroethene ND 25.0 23.63 ug/L 92 69 -126 0 20 trans-1,2-Dichloroethene ND 25.0 21.70 ug/L 87 66 -129 1 20 1,1-Dichloroethene ND 25.0 21.12 ug/L 84 62 -130 7 21 1,2-Dichloropropane ND 25.0 21.30 ug/L 85 68 -127 6 20 cis-1,3-Dichloropropene ND 25.0 19.36 ug/L 77 75 -120 4 20 trans-1,3-Dichloropropene ND 25.0 22.15 ug/L 89 66 -127 2 20 Eurofins Denver Page 95 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-14Lab Sample ID: 280-162293-11 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 576078 Ethylbenzene ND 25.0 23.21 ug/L 93 76 -121 4 20 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 2-Hexanone ND 100 93.72 ug/L 94 58 -134 2 21 Isopropylbenzene ND 25.0 25.77 ug/L 103 70 -127 2 20 Methylene Chloride ND 25.0 19.98 ug/L 80 64 -128 5 20 4-Methyl-2-pentanone (MIBK)ND 100 93.79 ug/L 94 56 -135 2 20 Methyl tert-butyl ether ND 25.0 23.23 ug/L 93 70 -127 3 20 Styrene ND 25.0 23.69 ug/L 95 79 -120 5 20 1,1,2,2-Tetrachloroethane ND 25.0 23.41 ug/L 94 72 -122 6 20 Tetrachloroethene ND 25.0 20.39 ug/L 82 72 -127 4 20 Toluene ND 25.0 22.78 ug/L 91 68 -127 2 20 1,2,3-Trichlorobenzene ND 25.0 20.25 ug/L 81 70 -127 6 20 1,2,4-Trichlorobenzene ND 25.0 21.30 ug/L 85 73 -124 2 20 1,1,1-Trichloroethane ND 25.0 22.30 ug/L 89 62 -132 3 20 1,1,2-Trichloroethane ND 25.0 22.13 ug/L 89 72 -128 3 20 Trichloroethene ND 25.0 21.02 ug/L 84 70 -125 2 20 Trichlorofluoromethane ND 25.0 22.97 ug/L 92 57 -144 6 28 Vinyl chloride ND 25.0 20.96 ug/L 84 53 -141 4 25 m-Xylene & p-Xylene ND 25.0 22.80 ug/L 91 76 -122 6 20 o-Xylene ND 25.0 23.23 ug/L 93 77 -120 5 20 1,2-Dibromoethane ND 25.0 22.86 ug/L 91 81 -118 1 20 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 103 MSD MSD Qualifier Limits%Recovery 102Toluene-d8 (Surr)80 -125 1094-Bromofluorobenzene (Surr)78 -120 97Dibromofluoromethane (Surr)77 -120 Client Sample ID: Method BlankLab Sample ID: MB 280-576171/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 576171 RL MDL Acetone ND 20.0 ug/L 05/25/22 17:56 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 05/25/22 17:56 1Benzene ND 2.00 ug/L 05/25/22 17:56 1Chlorobromomethane ND 1.00 ug/L 05/25/22 17:56 1Dichlorobromomethane ND 2.00 ug/L 05/25/22 17:56 1Bromoform ND 10.0 ug/L 05/25/22 17:56 1Bromomethane ND 20.0 ug/L 05/25/22 17:56 12-Butanone (MEK) ND 2.00 ug/L 05/25/22 17:56 1Carbon disulfide ND 1.00 ug/L 05/25/22 17:56 1Carbon tetrachloride ND 1.00 ug/L 05/25/22 17:56 1Chlorobenzene ND 1.00 ug/L 05/25/22 17:56 1Chlorodibromomethane ND 4.00 ug/L 05/25/22 17:56 1Chloroethane ND 1.00 ug/L 05/25/22 17:56 1Chloroform ND 2.00 ug/L 05/25/22 17:56 1Chloromethane ND 1.00 ug/L 05/25/22 17:56 1Cyclohexane ND 5.00 ug/L 05/25/22 17:56 11,2-Dibromo-3-Chloropropane Eurofins Denver Page 96 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-576171/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 576171 RL MDL 1,2-Dichlorobenzene ND 1.00 ug/L 05/25/22 17:56 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 05/25/22 17:56 11,3-Dichlorobenzene ND 1.00 ug/L 05/25/22 17:56 11,4-Dichlorobenzene ND 2.00 ug/L 05/25/22 17:56 1Dichlorodifluoromethane ND 1.00 ug/L 05/25/22 17:56 11,1-Dichloroethane ND 1.00 ug/L 05/25/22 17:56 11,2-Dichloroethane ND 1.00 ug/L 05/25/22 17:56 1cis-1,2-Dichloroethene ND 1.00 ug/L 05/25/22 17:56 1trans-1,2-Dichloroethene ND 1.00 ug/L 05/25/22 17:56 11,1-Dichloroethene ND 1.00 ug/L 05/25/22 17:56 11,2-Dichloropropane ND 1.00 ug/L 05/25/22 17:56 1cis-1,3-Dichloropropene ND 1.00 ug/L 05/25/22 17:56 1trans-1,3-Dichloropropene ND 20.0 ug/L 05/25/22 17:56 11,4-Dioxane ND 1.00 ug/L 05/25/22 17:56 1Ethylbenzene ND 5.00 ug/L 05/25/22 17:56 12-Hexanone ND 1.00 ug/L 05/25/22 17:56 1Isopropylbenzene ND 5.00 ug/L 05/25/22 17:56 1Methyl acetate ND 1.00 ug/L 05/25/22 17:56 1Methylcyclohexane ND 5.00 ug/L 05/25/22 17:56 1Methylene Chloride ND 5.00 ug/L 05/25/22 17:56 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 05/25/22 17:56 1Methyl tert-butyl ether ND 1.00 ug/L 05/25/22 17:56 1Styrene ND 1.00 ug/L 05/25/22 17:56 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 05/25/22 17:56 1Tetrachloroethene ND 1.00 ug/L 05/25/22 17:56 1Toluene ND 1.00 ug/L 05/25/22 17:56 11,2,3-Trichlorobenzene ND 1.00 ug/L 05/25/22 17:56 11,2,4-Trichlorobenzene ND 1.00 ug/L 05/25/22 17:56 11,1,1-Trichloroethane ND 1.00 ug/L 05/25/22 17:56 11,1,2-Trichloroethane ND 1.00 ug/L 05/25/22 17:56 1Trichloroethene ND 2.00 ug/L 05/25/22 17:56 1Trichlorofluoromethane ND 1.00 ug/L 05/25/22 17:56 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 05/25/22 17:56 1Vinyl chloride ND 2.00 ug/L 05/25/22 17:56 1m-Xylene & p-Xylene ND 1.00 ug/L 05/25/22 17:56 1o-Xylene ND 5.00 ug/L 05/25/22 17:56 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)110 70 -127 05/25/22 17:56 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 108 05/25/22 17:56 1Toluene-d8 (Surr)80 -125 110 05/25/22 17:56 14-Bromofluorobenzene (Surr)78 -120 101 05/25/22 17:56 1Dibromofluoromethane (Surr)77 -120 Eurofins Denver Page 97 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-576171/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 576171 Acetone 100 111.9 ug/L 112 50 -137 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 25.0 27.59 ug/L 110 69 -126 Chlorobromomethane 25.0 24.57 ug/L 98 71 -130 Dichlorobromomethane 25.0 27.13 ug/L 109 67 -126 Bromoform 25.0 23.22 ug/L 93 57 -125 Bromomethane 25.0 31.12 ug/L 124 25 -163 2-Butanone (MEK)100 111.4 ug/L 111 53 -135 Carbon disulfide 25.0 28.94 ug/L 116 56 -128 Carbon tetrachloride 25.0 25.11 ug/L 100 60 -133 Chlorobenzene 25.0 25.88 ug/L 104 78 -118 Chlorodibromomethane 25.0 25.12 ug/L 100 71 -122 Chloroethane 25.0 26.23 ug/L 105 52 -144 Chloroform 25.0 27.12 ug/L 108 68 -128 Chloromethane 25.0 24.50 ug/L 98 43 -142 1,2-Dibromo-3-Chloropropane 25.0 22.53 ug/L 90 58 -122 1,2-Dichlorobenzene 25.0 26.33 ug/L 105 77 -121 1,3-Dichlorobenzene 25.0 25.08 ug/L 100 76 -121 1,4-Dichlorobenzene 25.0 25.18 ug/L 101 76 -119 Dichlorodifluoromethane 25.0 20.06 ug/L 80 26 -152 1,1-Dichloroethane 25.0 28.42 ug/L 114 66 -130 1,2-Dichloroethane 25.0 27.44 ug/L 110 61 -130 cis-1,2-Dichloroethene 25.0 25.52 ug/L 102 69 -126 trans-1,2-Dichloroethene 25.0 25.43 ug/L 102 66 -129 1,1-Dichloroethene 25.0 25.43 ug/L 102 62 -130 1,2-Dichloropropane 25.0 29.68 ug/L 119 68 -127 cis-1,3-Dichloropropene 25.0 28.15 ug/L 113 75 -120 trans-1,3-Dichloropropene 25.0 26.96 ug/L 108 66 -127 Ethylbenzene 25.0 26.18 ug/L 105 76 -121 2-Hexanone 100 116.0 ug/L 116 58 -134 Isopropylbenzene 25.0 28.22 ug/L 113 70 -127 Methylene Chloride 25.0 27.95 ug/L 112 64 -128 4-Methyl-2-pentanone (MIBK)100 123.2 ug/L 123 56 -135 Methyl tert-butyl ether 25.0 25.57 ug/L 102 70 -127 Styrene 25.0 27.66 ug/L 111 79 -120 1,1,2,2-Tetrachloroethane 25.0 27.42 ug/L 110 72 -122 Tetrachloroethene 25.0 23.42 ug/L 94 72 -127 Toluene 25.0 26.46 ug/L 106 68 -127 1,2,3-Trichlorobenzene 25.0 23.89 ug/L 96 70 -127 1,2,4-Trichlorobenzene 25.0 24.24 ug/L 97 73 -124 1,1,1-Trichloroethane 25.0 25.63 ug/L 103 62 -132 1,1,2-Trichloroethane 25.0 25.98 ug/L 104 72 -128 Trichloroethene 25.0 27.38 ug/L 110 70 -125 Trichlorofluoromethane 25.0 25.13 ug/L 101 57 -144 Vinyl chloride 25.0 23.48 ug/L 94 53 -141 m-Xylene & p-Xylene 25.0 26.52 ug/L 106 76 -122 o-Xylene 25.0 25.87 ug/L 103 77 -120 1,2-Dibromoethane 25.0 25.96 ug/L 104 81 -118 Eurofins Denver Page 98 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-576171/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 576171 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 106 LCS LCS Qualifier Limits%Recovery 104Toluene-d8 (Surr)80 -125 1094-Bromofluorobenzene (Surr)78 -120 97Dibromofluoromethane (Surr)77 -120 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-576171/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 576171 Acetone 100 118.1 ug/L 118 50 -137 5 21 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 25.0 28.08 ug/L 112 69 -126 2 20 Chlorobromomethane 25.0 24.53 ug/L 98 71 -130 0 20 Dichlorobromomethane 25.0 27.64 ug/L 111 67 -126 2 20 Bromoform 25.0 24.01 ug/L 96 57 -125 3 20 Bromomethane 25.0 31.19 ug/L 125 25 -163 0 40 2-Butanone (MEK)100 110.5 ug/L 111 53 -135 1 20 Carbon disulfide 25.0 30.99 ug/L 124 56 -128 7 20 Carbon tetrachloride 25.0 25.73 ug/L 103 60 -133 2 20 Chlorobenzene 25.0 26.47 ug/L 106 78 -118 2 20 Chlorodibromomethane 25.0 25.72 ug/L 103 71 -122 2 20 Chloroethane 25.0 24.97 ug/L 100 52 -144 5 30 Chloroform 25.0 27.05 ug/L 108 68 -128 0 20 Chloromethane 25.0 26.05 ug/L 104 43 -142 6 20 1,2-Dibromo-3-Chloropropane 25.0 22.35 ug/L 89 58 -122 1 21 1,2-Dichlorobenzene 25.0 26.10 ug/L 104 77 -121 1 20 1,3-Dichlorobenzene 25.0 25.81 ug/L 103 76 -121 3 20 1,4-Dichlorobenzene 25.0 25.92 ug/L 104 76 -119 3 20 Dichlorodifluoromethane 25.0 18.37 ug/L 73 26 -152 9 21 1,1-Dichloroethane 25.0 29.00 ug/L 116 66 -130 2 20 1,2-Dichloroethane 25.0 27.30 ug/L 109 61 -130 1 20 cis-1,2-Dichloroethene 25.0 25.49 ug/L 102 69 -126 0 20 trans-1,2-Dichloroethene 25.0 26.51 ug/L 106 66 -129 4 20 1,1-Dichloroethene 25.0 26.67 ug/L 107 62 -130 5 21 1,2-Dichloropropane 25.0 30.14 ug/L 121 68 -127 2 20 cis-1,3-Dichloropropene 25.0 29.15 ug/L 117 75 -120 4 20 trans-1,3-Dichloropropene 25.0 28.42 ug/L 114 66 -127 5 20 Ethylbenzene 25.0 27.13 ug/L 109 76 -121 4 20 2-Hexanone 100 119.6 ug/L 120 58 -134 3 21 Isopropylbenzene 25.0 28.55 ug/L 114 70 -127 1 20 Methylene Chloride 25.0 28.65 ug/L 115 64 -128 2 20 4-Methyl-2-pentanone (MIBK)100 124.0 ug/L 124 56 -135 1 20 Methyl tert-butyl ether 25.0 25.84 ug/L 103 70 -127 1 20 Styrene 25.0 28.78 ug/L 115 79 -120 4 20 1,1,2,2-Tetrachloroethane 25.0 29.75 ug/L 119 72 -122 8 20 Tetrachloroethene 25.0 23.82 ug/L 95 72 -127 2 20 Toluene 25.0 26.84 ug/L 107 68 -127 1 20 1,2,3-Trichlorobenzene 25.0 23.48 ug/L 94 70 -127 2 20 Eurofins Denver Page 99 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-576171/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 576171 1,2,4-Trichlorobenzene 25.0 24.98 ug/L 100 73 -124 3 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,1,1-Trichloroethane 25.0 26.17 ug/L 105 62 -132 2 20 1,1,2-Trichloroethane 25.0 26.39 ug/L 106 72 -128 2 20 Trichloroethene 25.0 27.18 ug/L 109 70 -125 1 20 Trichlorofluoromethane 25.0 23.27 ug/L 93 57 -144 8 28 Vinyl chloride 25.0 24.63 ug/L 99 53 -141 5 25 m-Xylene & p-Xylene 25.0 27.40 ug/L 110 76 -122 3 20 o-Xylene 25.0 27.01 ug/L 108 77 -120 4 20 1,2-Dibromoethane 25.0 26.72 ug/L 107 81 -118 3 20 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 106 LCSD LCSD Qualifier Limits%Recovery 105Toluene-d8 (Surr)80 -125 1094-Bromofluorobenzene (Surr)78 -120 96Dibromofluoromethane (Surr)77 -120 Client Sample ID: Matrix SpikeLab Sample ID: 280-162369-B-4 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 576171 Acetone ND 100 101.5 ug/L 101 50 -137 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 25.0 30.81 ug/L 119 69 -126 Chlorobromomethane ND 25.0 26.37 ug/L 105 71 -130 Dichlorobromomethane ND 25.0 28.75 ug/L 115 67 -126 Bromoform ND 25.0 24.73 ug/L 99 57 -125 Bromomethane ND 25.0 27.09 ug/L 108 25 -163 2-Butanone (MEK)ND 100 106.6 ug/L 107 53 -135 Carbon disulfide ND F1 25.0 33.51 F1 ug/L 134 56 -128 Carbon tetrachloride ND 25.0 27.71 ug/L 111 60 -133 Chlorobenzene ND 25.0 27.98 ug/L 112 78 -118 Chlorodibromomethane ND 25.0 26.62 ug/L 106 71 -122 Chloroethane ND 25.0 27.10 ug/L 108 52 -144 Chloroform ND 25.0 29.36 ug/L 117 68 -128 Chloromethane ND 25.0 29.12 ug/L 116 43 -142 1,2-Dibromo-3-Chloropropane ND 25.0 22.14 ug/L 89 58 -122 1,2-Dichlorobenzene ND 25.0 26.33 ug/L 105 77 -121 1,3-Dichlorobenzene ND 25.0 25.71 ug/L 103 76 -121 1,4-Dichlorobenzene ND 25.0 25.31 ug/L 101 76 -119 Dichlorodifluoromethane ND 25.0 20.91 ug/L 84 26 -152 1,1-Dichloroethane ND 25.0 30.92 ug/L 124 66 -130 1,2-Dichloroethane ND 25.0 28.54 ug/L 114 61 -130 cis-1,2-Dichloroethene ND 25.0 27.22 ug/L 109 69 -126 trans-1,2-Dichloroethene ND 25.0 28.48 ug/L 114 66 -129 1,1-Dichloroethene ND 25.0 26.08 ug/L 104 62 -130 1,2-Dichloropropane ND F1 25.0 32.10 F1 ug/L 128 68 -127 cis-1,3-Dichloropropene ND 25.0 29.12 ug/L 116 75 -120 trans-1,3-Dichloropropene ND 25.0 27.87 ug/L 111 66 -127 Eurofins Denver Page 100 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 280-162369-B-4 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 576171 Ethylbenzene ND 25.0 28.99 ug/L 114 76 -121 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 2-Hexanone ND 100 127.5 ug/L 127 58 -134 Isopropylbenzene ND 25.0 30.08 ug/L 118 70 -127 Methylene Chloride ND 25.0 30.93 ug/L 124 64 -128 4-Methyl-2-pentanone (MIBK)ND 100 123.9 ug/L 124 56 -135 Methyl tert-butyl ether ND 25.0 25.82 ug/L 103 70 -127 Styrene ND 25.0 29.70 ug/L 119 79 -120 1,1,2,2-Tetrachloroethane ND 25.0 29.84 ug/L 119 72 -122 Tetrachloroethene ND 25.0 24.33 ug/L 97 72 -127 Toluene ND 25.0 28.63 ug/L 115 68 -127 1,2,3-Trichlorobenzene ND F1 25.0 19.15 ug/L 77 70 -127 1,2,4-Trichlorobenzene ND F1 25.0 20.72 ug/L 83 73 -124 1,1,1-Trichloroethane ND 25.0 27.65 ug/L 111 62 -132 1,1,2-Trichloroethane ND 25.0 27.33 ug/L 109 72 -128 Trichloroethene ND 25.0 27.97 ug/L 112 70 -125 Trichlorofluoromethane ND 25.0 25.56 ug/L 102 57 -144 Vinyl chloride ND 25.0 25.32 ug/L 101 53 -141 m-Xylene & p-Xylene ND 25.0 28.59 ug/L 114 76 -122 o-Xylene ND 25.0 28.59 ug/L 114 77 -120 1,2-Dibromoethane ND 25.0 26.95 ug/L 108 81 -118 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 108 MS MS Qualifier Limits%Recovery 106Toluene-d8 (Surr)80 -125 1114-Bromofluorobenzene (Surr)78 -120 96Dibromofluoromethane (Surr)77 -120 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-162369-B-4 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 576171 Acetone ND 100 106.9 ug/L 107 50 -137 5 21 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 25.0 30.40 ug/L 118 69 -126 1 20 Chlorobromomethane ND 25.0 25.67 ug/L 103 71 -130 3 20 Dichlorobromomethane ND 25.0 28.49 ug/L 114 67 -126 1 20 Bromoform ND 25.0 23.83 ug/L 95 57 -125 4 20 Bromomethane ND 25.0 27.89 ug/L 112 25 -163 3 40 2-Butanone (MEK)ND 100 103.9 ug/L 104 53 -135 3 20 Carbon disulfide ND F1 25.0 33.18 F1 ug/L 133 56 -128 1 20 Carbon tetrachloride ND 25.0 27.27 ug/L 109 60 -133 2 20 Chlorobenzene ND 25.0 27.06 ug/L 108 78 -118 3 20 Chlorodibromomethane ND 25.0 26.67 ug/L 107 71 -122 0 20 Chloroethane ND 25.0 27.36 ug/L 109 52 -144 1 30 Chloroform ND 25.0 28.97 ug/L 116 68 -128 1 20 Chloromethane ND 25.0 26.55 ug/L 106 43 -142 9 20 1,2-Dibromo-3-Chloropropane ND 25.0 22.62 ug/L 90 58 -122 2 21 1,2-Dichlorobenzene ND 25.0 24.40 ug/L 98 77 -121 8 20 Eurofins Denver Page 101 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-162369-B-4 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 576171 1,3-Dichlorobenzene ND 25.0 23.84 ug/L 95 76 -121 8 20 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 1,4-Dichlorobenzene ND 25.0 23.40 ug/L 94 76 -119 8 20 Dichlorodifluoromethane ND 25.0 19.24 ug/L 77 26 -152 8 21 1,1-Dichloroethane ND 25.0 30.99 ug/L 124 66 -130 0 20 1,2-Dichloroethane ND 25.0 28.56 ug/L 114 61 -130 0 20 cis-1,2-Dichloroethene ND 25.0 27.20 ug/L 109 69 -126 0 20 trans-1,2-Dichloroethene ND 25.0 28.13 ug/L 113 66 -129 1 20 1,1-Dichloroethene ND 25.0 28.78 ug/L 115 62 -130 10 21 1,2-Dichloropropane ND F1 25.0 31.47 ug/L 126 68 -127 2 20 cis-1,3-Dichloropropene ND 25.0 28.93 ug/L 116 75 -120 1 20 trans-1,3-Dichloropropene ND 25.0 27.96 ug/L 112 66 -127 0 20 Ethylbenzene ND 25.0 28.15 ug/L 111 76 -121 3 20 2-Hexanone ND 100 125.3 ug/L 125 58 -134 2 21 Isopropylbenzene ND 25.0 29.11 ug/L 115 70 -127 3 20 Methylene Chloride ND 25.0 30.42 ug/L 122 64 -128 2 20 4-Methyl-2-pentanone (MIBK)ND 100 121.9 ug/L 122 56 -135 2 20 Methyl tert-butyl ether ND 25.0 25.87 ug/L 103 70 -127 0 20 Styrene ND 25.0 28.00 ug/L 112 79 -120 6 20 1,1,2,2-Tetrachloroethane ND 25.0 29.20 ug/L 117 72 -122 2 20 Tetrachloroethene ND 25.0 23.47 ug/L 94 72 -127 4 20 Toluene ND 25.0 28.10 ug/L 112 68 -127 2 20 1,2,3-Trichlorobenzene ND F1 25.0 17.08 F1 ug/L 68 70 -127 11 20 1,2,4-Trichlorobenzene ND F1 25.0 17.78 F1 ug/L 71 73 -124 15 20 1,1,1-Trichloroethane ND 25.0 27.79 ug/L 111 62 -132 1 20 1,1,2-Trichloroethane ND 25.0 27.12 ug/L 108 72 -128 1 20 Trichloroethene ND 25.0 27.83 ug/L 111 70 -125 1 20 Trichlorofluoromethane ND 25.0 25.52 ug/L 102 57 -144 0 28 Vinyl chloride ND 25.0 25.73 ug/L 103 53 -141 2 25 m-Xylene & p-Xylene ND 25.0 27.57 ug/L 110 76 -122 4 20 o-Xylene ND 25.0 27.08 ug/L 108 77 -120 5 20 1,2-Dibromoethane ND 25.0 26.28 ug/L 105 81 -118 3 20 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 105 MSD MSD Qualifier Limits%Recovery 105Toluene-d8 (Surr)80 -125 1104-Bromofluorobenzene (Surr)78 -120 97Dibromofluoromethane (Surr)77 -120 Client Sample ID: Method BlankLab Sample ID: MB 280-576238/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 576238 RL MDL cis-1,2-Dichloroethene ND 1.00 ug/L 05/26/22 10:02 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)103 70 -127 05/26/22 10:02 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 100 05/26/22 10:02 1Toluene-d8 (Surr)80 -125 Eurofins Denver Page 102 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-576238/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 576238 4-Bromofluorobenzene (Surr)107 78 -120 05/26/22 10:02 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 103 05/26/22 10:02 1Dibromofluoromethane (Surr)77 -120 Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-576238/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 576238 cis-1,2-Dichloroethene 50.0 49.73 ug/L 99 69 -126 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 99 LCS LCS Qualifier Limits%Recovery 103Toluene-d8 (Surr)80 -125 1124-Bromofluorobenzene (Surr)78 -120 95Dibromofluoromethane (Surr)77 -120 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-576238/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 576238 cis-1,2-Dichloroethene 50.0 50.29 ug/L 101 69 -126 1 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 98 LCSD LCSD Qualifier Limits%Recovery 103Toluene-d8 (Surr)80 -125 1104-Bromofluorobenzene (Surr)78 -120 96Dibromofluoromethane (Surr)77 -120 Client Sample ID: Matrix SpikeLab Sample ID: 280-162321-C-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 576238 cis-1,2-Dichloroethene 4.72 25.0 25.64 ug/L 84 69 -126 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 102 MS MS Qualifier Limits%Recovery 101Toluene-d8 (Surr)80 -125 1084-Bromofluorobenzene (Surr)78 -120 99Dibromofluoromethane (Surr)77 -120 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-162321-C-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 576238 cis-1,2-Dichloroethene 4.72 25.0 28.85 ug/L 97 69 -126 12 20 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Eurofins Denver Page 103 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 103 MSD MSD Qualifier Limits%Recovery 100Toluene-d8 (Surr)80 -125 1094-Bromofluorobenzene (Surr)78 -120 100Dibromofluoromethane (Surr)77 -120 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) Client Sample ID: Method BlankLab Sample ID: MB 280-575778/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 575778 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/21/22 21:13 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)113 70 -127 05/21/22 21:13 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575778/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 575778 1,4-Dioxane 50.0 40.19 ug/L 80 25 -141 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 109 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-575778/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 575778 1,4-Dioxane 50.0 43.37 ug/L 87 25 -141 8 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 106 LCSD LCSD Qualifier Limits%Recovery Client Sample ID: Method BlankLab Sample ID: MB 280-575794/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 575794 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/22/22 19:52 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)118 70 -127 05/22/22 19:52 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery Eurofins Denver Page 104 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575794/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 575794 1,4-Dioxane 25.0 23.49 ug/L 94 25 -141 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 114 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-575794/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 575794 1,4-Dioxane 25.0 21.37 ug/L 85 25 -141 9 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 112 LCSD LCSD Qualifier Limits%Recovery Client Sample ID: Method BlankLab Sample ID: MB 280-575847/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 575847 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/23/22 11:36 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)118 70 -127 05/23/22 11:36 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575847/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 575847 1,4-Dioxane 25.0 23.42 ug/L 94 25 -141 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 111 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-575847/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 575847 1,4-Dioxane 25.0 23.05 ug/L 92 25 -141 2 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 112 LCSD LCSD Qualifier Limits%Recovery Eurofins Denver Page 105 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-575851/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 575851 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/23/22 21:06 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)120 70 -127 05/23/22 21:06 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575851/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 575851 1,4-Dioxane 25.0 25.14 ug/L 101 25 -141 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 117 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-575851/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 575851 1,4-Dioxane 25.0 24.06 ug/L 96 25 -141 4 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 114 LCSD LCSD Qualifier Limits%Recovery Client Sample ID: MW-13Lab Sample ID: 280-162293-7 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 575851 1,4-Dioxane 0.597 J F2 25.0 27.64 ug/L 108 25 -141 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 115 MS MS Qualifier Limits%Recovery Client Sample ID: MW-13Lab Sample ID: 280-162293-7 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 575851 1,4-Dioxane 0.597 J F2 25.0 19.67 F2 ug/L 76 25 -141 34 20 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 113 MSD MSD Qualifier Limits%Recovery Eurofins Denver Page 106 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: MW-14Lab Sample ID: 280-162293-11 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 575851 1,4-Dioxane ND 25.0 23.91 ug/L 96 25 -141 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 114 MS MS Qualifier Limits%Recovery Client Sample ID: MW-14Lab Sample ID: 280-162293-11 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 575851 1,4-Dioxane ND 25.0 20.36 ug/L 81 25 -141 16 20 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 114 MSD MSD Qualifier Limits%Recovery Client Sample ID: Method BlankLab Sample ID: MB 280-576090/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 576090 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 05/25/22 07:14 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)121 70 -127 05/25/22 07:14 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-576090/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 576090 1,4-Dioxane 25.0 24.53 ug/L 98 25 -141 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 113 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-576090/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 576090 1,4-Dioxane 25.0 21.95 ug/L 88 25 -141 11 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 112 LCSD LCSD Qualifier Limits%Recovery Eurofins Denver Page 107 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: RSK-175 - Dissolved Gases (GC) Client Sample ID: Method BlankLab Sample ID: MB 280-575695/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 575695 RL MDL Methane ND 5.00 ug/L 05/20/22 16:38 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 05/20/22 16:38 1Ethene ND 5.00 ug/L 05/20/22 16:38 1Ethane ND 5.00 ug/L 05/20/22 16:38 1Acetylene ND 5.00 ug/L 05/20/22 16:38 1Butane ND 5.00 ug/L 05/20/22 16:38 1Propane ND 5.00 ug/L 05/20/22 16:38 1isobutylene Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575695/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 575695 Methane 65.7 62.33 ug/L 95 75 -125 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Ethene 115 114.3 ug/L 100 75 -125 Ethane 123 129.6 ug/L 105 75 -125 Acetylene 107 107.0 ug/L 100 75 -125 Butane 238 230.5 ug/L 97 75 -125 Propane 181 175.9 ug/L 97 75 -125 isobutylene 230 213.0 ug/L 93 75 -125 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-575695/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 575695 Methane 65.7 65.85 ug/L 100 75 -125 5 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Ethene 115 120.7 ug/L 105 75 -125 5 20 Ethane 123 137.1 ug/L 111 75 -125 6 20 Acetylene 107 111.3 ug/L 104 75 -125 4 20 Butane 238 250.5 ug/L 105 75 -125 8 20 Propane 181 185.6 ug/L 103 75 -125 5 20 isobutylene 230 227.7 ug/L 99 75 -125 7 20 Client Sample ID: Matrix SpikeLab Sample ID: 280-162463-K-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 575695 Methane ND 65.7 62.45 ug/L 95 52 -145 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Ethene ND 115 114.8 ug/L 100 75 -131 Ethane ND 123 130.0 ug/L 106 75 -125 Acetylene ND 107 108.6 ug/L 102 52 -142 Butane ND 238 228.3 ug/L 96 50 -150 Propane ND 181 175.5 ug/L 97 50 -150 isobutylene ND 230 212.4 ug/L 92 50 -150 Eurofins Denver Page 108 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: RSK-175 - Dissolved Gases (GC) (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-162463-L-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 575695 Methane ND 65.7 63.10 ug/L 96 52 -145 1 20 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Ethene ND 115 115.7 ug/L 101 75 -131 1 20 Ethane ND 123 131.7 ug/L 107 75 -125 1 20 Acetylene ND 107 107.7 ug/L 101 52 -142 1 20 Butane ND 238 234.8 ug/L 99 50 -150 3 20 Propane ND 181 178.4 ug/L 99 50 -150 2 20 isobutylene ND 230 217.2 ug/L 95 50 -150 2 20 Client Sample ID: DuplicateLab Sample ID: 280-162463-J-3 DU Matrix: Water Prep Type: Total/NA Analysis Batch: 575695 Methane ND ND ug/L NC 20 Analyte DU DU DUnitResult Qualifier Sample Result Sample Qualifier LimitRPD RPD Ethene ND ND ug/L NC 20 Ethane ND ND ug/L NC 20 Acetylene ND ND ug/L NC 20 Butane ND ND ug/L NC 20 Propane ND ND ug/L NC 20 isobutylene ND ND ug/L NC 20 Method: 6010D - Metals (ICP) Client Sample ID: Method BlankLab Sample ID: MB 280-575387/1-A Matrix: Water Prep Type: Total Recoverable Analysis Batch: 575565 Prep Batch: 575387 RL MDL Iron ND 100 ug/L 05/18/22 17:33 05/19/22 12:17 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 10.0 ug/L 05/18/22 17:33 05/19/22 12:17 1Manganese Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575387/2-A Matrix: Water Prep Type: Total Recoverable Analysis Batch: 575565 Prep Batch: 575387 Iron 10000 10660 ug/L 107 89 -115 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Manganese 1000 993.5 ug/L 99 90 -110 Client Sample ID: MW-9ILab Sample ID: 280-162293-6 MS Matrix: Water Prep Type: Total Recoverable Analysis Batch: 575565 Prep Batch: 575387 Iron 129 10000 9835 ug/L 97 75 -125 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Manganese 310 1000 1255 ug/L 95 79 -121 Eurofins Denver Page 109 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 6010D - Metals (ICP) (Continued) Client Sample ID: MW-9ILab Sample ID: 280-162293-6 MSD Matrix: Water Prep Type: Total Recoverable Analysis Batch: 575565 Prep Batch: 575387 Iron 129 10000 10560 ug/L 104 75 -125 7 20 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Manganese 310 1000 1316 ug/L 101 79 -121 5 20 Client Sample ID: Method BlankLab Sample ID: MB 280-575456/1-C Matrix: Water Prep Type: Dissolved Analysis Batch: 575804 Prep Batch: 575615 RL MDL Iron ND 100 ug/L 05/20/22 06:51 05/20/22 20:14 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 10.0 ug/L 05/20/22 06:51 05/20/22 20:14 1Manganese Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575456/2-C Matrix: Water Prep Type: Dissolved Analysis Batch: 575804 Prep Batch: 575615 Iron 10000 8911 ug/L 89 89 -115 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Manganese 1000 913.7 ug/L 91 90 -110 Client Sample ID: Matrix SpikeLab Sample ID: 280-162332-C-1-E MS Matrix: Water Prep Type: Dissolved Analysis Batch: 575804 Prep Batch: 575615 Iron ND 10000 9233 ug/L 92 75 -125 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Manganese 432 1000 1357 ug/L 92 79 -121 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-162332-C-1-F MSD Matrix: Water Prep Type: Dissolved Analysis Batch: 575804 Prep Batch: 575615 Iron ND 10000 8992 ug/L 90 75 -125 3 20 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Manganese 432 1000 1343 ug/L 91 79 -121 1 20 Method: 9056A - Anions, Ion Chromatography Client Sample ID: Method BlankLab Sample ID: MB 280-575823/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 575823 RL MDL Sulfate ND 5.00 mg/L 05/23/22 10:06 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575823/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 575823 Sulfate 100 100.7 mg/L 101 90 -110 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Eurofins Denver Page 110 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 9056A - Anions, Ion Chromatography (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-575823/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 575823 Sulfate 100 100.9 mg/L 101 90 -110 0 10 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Client Sample ID: Lab Control SampleLab Sample ID: MRL 280-575823/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 575823 Sulfate 5.00 ND mg/L 98 50 -150 Analyte MRL MRL DUnitResult Qualifier %Rec Spike Added %Rec Limits Client Sample ID: Matrix SpikeLab Sample ID: 280-162068-A-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 575823 Sulfate 377 250 616.0 mg/L 96 80 -120 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-162068-A-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 575823 Sulfate 377 250 621.5 mg/L 98 80 -120 1 20 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Client Sample ID: DuplicateLab Sample ID: 280-162068-A-1 DU Matrix: Water Prep Type: Total/NA Analysis Batch: 575823 Sulfate 377 344.3 mg/L 9 15 Analyte DU DU DUnitResult Qualifier Sample Result Sample Qualifier LimitRPD RPD Method: 9060A - Organic Carbon, Total (TOC) Client Sample ID: Method BlankLab Sample ID: MB 280-575014/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 575014 RL MDL Total Organic Carbon - Duplicates ND 1.00 mg/L 05/14/22 21:44 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575014/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 575014 Total Organic Carbon - Duplicates 25.0 25.71 mg/L 103 88 -112 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits TOC Result 2 25.0 25.68 mg/L 103 88 -112 TOC Result 1 25.0 25.74 mg/L 103 88 -112 Eurofins Denver Page 111 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Method: 9060A - Organic Carbon, Total (TOC) (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 280-162192-B-18 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 575014 Total Organic Carbon - Duplicates ND 25.0 26.66 mg/L 103 88 -112 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits TOC Result 2 ND 25.0 26.85 mg/L 104 88 -112 TOC Result 1 1.02 25.0 26.46 mg/L 102 88 -112 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-162192-B-18 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 575014 Total Organic Carbon - Duplicates ND 25.0 26.55 mg/L 102 88 -112 0 15 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD TOC Result 2 ND 25.0 26.66 mg/L 103 88 -112 1 15 TOC Result 1 1.02 25.0 26.43 mg/L 102 88 -112 0 15 Client Sample ID: Method BlankLab Sample ID: MB 280-575554/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 575554 RL MDL Total Organic Carbon - Duplicates ND 1.00 mg/L 05/18/22 15:15 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-575554/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 575554 Total Organic Carbon - Duplicates 25.0 26.08 mg/L 104 88 -112 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits TOC Result 2 25.0 26.16 mg/L 105 88 -112 TOC Result 1 25.0 25.99 mg/L 104 88 -112 Client Sample ID: Matrix SpikeLab Sample ID: 280-161909-B-4 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 575554 Total Organic Carbon - Duplicates ND 25.0 25.58 mg/L 102 88 -112 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits TOC Result 2 ND 25.0 25.60 mg/L 102 88 -112 TOC Result 1 ND 25.0 25.55 mg/L 102 88 -112 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-161909-B-4 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 575554 Total Organic Carbon - Duplicates ND 25.0 25.61 mg/L 102 88 -112 0 15 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD TOC Result 2 ND 25.0 25.60 mg/L 102 88 -112 0 15 TOC Result 1 ND 25.0 25.61 mg/L 102 88 -112 0 15 Eurofins Denver Page 112 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA Analysis Batch: 575756 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D280-162142-1 MW-17I Total/NA Water 8260D280-162142-2 MW-11 Total/NA Water 8260D280-162142-3 MW-11I Total/NA Water 8260D280-162142-4 MW-11I-c Total/NA Water 8260D280-162142-5 MW-5 Total/NA Water 8260D280-162142-6 MW-5I Total/NA Water 8260D280-162142-7 MW-2 Total/NA Water 8260DMB 280-575756/9 Method Blank Total/NA Water 8260DLCS 280-575756/1002 Lab Control Sample Total/NA Water 8260DLCSD 280-575756/5 Lab Control Sample Dup Total/NA Water 8260D280-162144-B-8 MS Matrix Spike Total/NA Water 8260D280-162144-C-8 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 575778 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM280-162142-1 MW-17I Total/NA Water 8260D SIM280-162142-2 MW-11 Total/NA Water 8260D SIM280-162142-3 MW-11I Total/NA Water 8260D SIM280-162142-4 MW-11I-c Total/NA Water 8260D SIM280-162142-5 MW-5 Total/NA Water 8260D SIM280-162142-6 MW-5I Total/NA Water 8260D SIM280-162142-7 MW-2 Total/NA Water 8260D SIMMB 280-575778/6 Method Blank Total/NA Water 8260D SIMLCS 280-575778/3 Lab Control Sample Total/NA Water 8260D SIMLCSD 280-575778/4 Lab Control Sample Dup Total/NA Analysis Batch: 575794 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM280-162228-1 MW-3I Total/NA Water 8260D SIM280-162228-2 MW-3 Total/NA Water 8260D SIM280-162228-3 MW-2A Total/NA Water 8260D SIM280-162228-4 MW-2I Total/NA Water 8260D SIM280-162228-5 MW-15 Total/NA Water 8260D SIM280-162228-6 MW-15I Total/NA Water 8260D SIM280-162228-7 MW-7I Total/NA Water 8260D SIM280-162228-8 MW-7 Total/NA Water 8260D SIM280-162228-9 MW-8 Total/NA Water 8260D SIM280-162228-10 MW-8-a Total/NA Water 8260D SIM280-162228-11 B-1 Total/NA Water 8260D SIM280-162228-12 B-3 Total/NA Water 8260D SIM280-162228-13 MW-20I Total/NA Water 8260D SIM280-162228-14 MW-15-c Total/NA Water 8260D SIMMB 280-575794/6 Method Blank Total/NA Water 8260D SIMLCS 280-575794/3 Lab Control Sample Total/NA Water 8260D SIMLCSD 280-575794/4 Lab Control Sample Dup Total/NA Analysis Batch: 575847 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM280-162293-12 MW-14I Total/NA Water 8260D SIM280-162293-13 MW-4 Total/NA Water 8260D SIM280-162293-14 MW-4I Total/NA Eurofins Denver Page 113 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA (Continued) Analysis Batch: 575847 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM280-162293-15 MW-18I-a Total/NA Water 8260D SIMMB 280-575847/6 Method Blank Total/NA Water 8260D SIMLCS 280-575847/3 Lab Control Sample Total/NA Water 8260D SIMLCSD 280-575847/4 Lab Control Sample Dup Total/NA Analysis Batch: 575851 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM280-162293-1 MW-16 Total/NA Water 8260D SIM280-162293-2 MW-16-c Total/NA Water 8260D SIM280-162293-3 MW-6 Total/NA Water 8260D SIM280-162293-4 MW-6I Total/NA Water 8260D SIM280-162293-5 MW-9 Total/NA Water 8260D SIM280-162293-6 MW-9I Total/NA Water 8260D SIM280-162293-7 MW-13 Total/NA Water 8260D SIM280-162293-8 MW-13I Total/NA Water 8260D SIM280-162293-9 MW-18I Total/NA Water 8260D SIM280-162293-10 MW-19I Total/NA Water 8260D SIM280-162293-11 MW-14 Total/NA Water 8260D SIMMB 280-575851/6 Method Blank Total/NA Water 8260D SIMLCS 280-575851/3 Lab Control Sample Total/NA Water 8260D SIMLCSD 280-575851/4 Lab Control Sample Dup Total/NA Water 8260D SIM280-162293-7 MS MW-13 Total/NA Water 8260D SIM280-162293-7 MSD MW-13 Total/NA Water 8260D SIM280-162293-11 MS MW-14 Total/NA Water 8260D SIM280-162293-11 MSD MW-14 Total/NA Analysis Batch: 575885 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D280-162228-1 MW-3I Total/NA Water 8260D280-162228-2 MW-3 Total/NA Water 8260D280-162228-3 MW-2A Total/NA Water 8260D280-162228-4 MW-2I Total/NA Water 8260D280-162228-5 MW-15 Total/NA Water 8260D280-162228-6 MW-15I Total/NA Water 8260D280-162228-7 MW-7I Total/NA Water 8260D280-162228-8 MW-7 Total/NA Water 8260D280-162228-9 MW-8 Total/NA Water 8260D280-162228-10 MW-8-a Total/NA Water 8260D280-162228-11 B-1 Total/NA Water 8260D280-162228-12 B-3 Total/NA Water 8260D280-162228-13 MW-20I Total/NA Water 8260D280-162228-14 MW-15-c Total/NA Water 8260DMB 280-575885/9 Method Blank Total/NA Water 8260DLCS 280-575885/1002 Lab Control Sample Total/NA Water 8260DLCSD 280-575885/5 Lab Control Sample Dup Total/NA Analysis Batch: 576078 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D280-162293-1 MW-16 Total/NA Water 8260D280-162293-2 MW-16-c Total/NA Water 8260D280-162293-3 MW-6 Total/NA Eurofins Denver Page 114 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA (Continued) Analysis Batch: 576078 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D280-162293-4 MW-6I Total/NA Water 8260D280-162293-5 MW-9 Total/NA Water 8260D280-162293-6 MW-9I Total/NA Water 8260D280-162293-7 MW-13 Total/NA Water 8260D280-162293-8 MW-13I Total/NA Water 8260D280-162293-9 MW-18I Total/NA Water 8260D280-162293-10 MW-19I Total/NA Water 8260D280-162293-11 MW-14 Total/NA Water 8260D280-162293-12 MW-14I Total/NA Water 8260D280-162293-13 MW-4 Total/NA Water 8260D280-162293-14 MW-4I Total/NA Water 8260D280-162293-15 MW-18I-a Total/NA Water 8260DMB 280-576078/9 Method Blank Total/NA Water 8260DLCS 280-576078/1002 Lab Control Sample Total/NA Water 8260DLCSD 280-576078/5 Lab Control Sample Dup Total/NA Water 8260D280-162293-7 MS MW-13 Total/NA Water 8260D280-162293-7 MSD MW-13 Total/NA Water 8260D280-162293-11 MS MW-14 Total/NA Water 8260D280-162293-11 MSD MW-14 Total/NA Analysis Batch: 576090 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM280-162353-1 MW-10 Total/NA Water 8260D SIM280-162353-2 MW-10I Total/NA Water 8260D SIM280-162353-3 MW-12 Total/NA Water 8260D SIM280-162353-4 MW-12-c Total/NA Water 8260D SIMMB 280-576090/6 Method Blank Total/NA Water 8260D SIMLCS 280-576090/3 Lab Control Sample Total/NA Water 8260D SIMLCSD 280-576090/4 Lab Control Sample Dup Total/NA Analysis Batch: 576171 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D280-162353-1 MW-10 Total/NA Water 8260D280-162353-2 MW-10I Total/NA Water 8260D280-162353-3 MW-12 Total/NA Water 8260D280-162353-4 MW-12-c Total/NA Water 8260DMB 280-576171/9 Method Blank Total/NA Water 8260DLCS 280-576171/1002 Lab Control Sample Total/NA Water 8260DLCSD 280-576171/5 Lab Control Sample Dup Total/NA Water 8260D280-162369-B-4 MS Matrix Spike Total/NA Water 8260D280-162369-B-4 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 576238 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D280-162293-12 - DL MW-14I Total/NA Water 8260DMB 280-576238/9 Method Blank Total/NA Water 8260DLCS 280-576238/1002 Lab Control Sample Total/NA Water 8260DLCSD 280-576238/5 Lab Control Sample Dup Total/NA Water 8260D280-162321-C-3 MS Matrix Spike Total/NA Water 8260D280-162321-C-3 MSD Matrix Spike Duplicate Total/NA Eurofins Denver Page 115 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. GC VOA Analysis Batch: 575695 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water RSK-175280-162293-6 MW-9I Total/NA Water RSK-175280-162293-10 MW-19I Total/NA Water RSK-175280-162293-12 MW-14I Total/NA Water RSK-175MB 280-575695/5 Method Blank Total/NA Water RSK-175LCS 280-575695/3 Lab Control Sample Total/NA Water RSK-175LCSD 280-575695/4 Lab Control Sample Dup Total/NA Water RSK-175280-162463-K-3 MS Matrix Spike Total/NA Water RSK-175280-162463-L-3 MSD Matrix Spike Duplicate Total/NA Water RSK-175280-162463-J-3 DU Duplicate Total/NA Metals Prep Batch: 575387 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 3005A280-162293-6 MW-9I Total Recoverable Water 3005A280-162293-10 MW-19I Total Recoverable Water 3005A280-162293-12 MW-14I Total Recoverable Water 3005AMB 280-575387/1-A Method Blank Total Recoverable Water 3005ALCS 280-575387/2-A Lab Control Sample Total Recoverable Water 3005A280-162293-6 MS MW-9I Total Recoverable Water 3005A280-162293-6 MSD MW-9I Total Recoverable Filtration Batch: 575456 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water FILTRATION280-162293-6 MW-9I Dissolved Water FILTRATION280-162293-10 MW-19I Dissolved Water FILTRATION280-162293-12 MW-14I Dissolved Water FILTRATIONMB 280-575456/1-C Method Blank Dissolved Water FILTRATIONLCS 280-575456/2-C Lab Control Sample Dissolved Water FILTRATION280-162332-C-1-E MS Matrix Spike Dissolved Water FILTRATION280-162332-C-1-F MSD Matrix Spike Duplicate Dissolved Analysis Batch: 575565 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 6010D 575387280-162293-6 MW-9I Total Recoverable Water 6010D 575387280-162293-10 MW-19I Total Recoverable Water 6010D 575387280-162293-12 MW-14I Total Recoverable Water 6010D 575387MB 280-575387/1-A Method Blank Total Recoverable Water 6010D 575387LCS 280-575387/2-A Lab Control Sample Total Recoverable Water 6010D 575387280-162293-6 MS MW-9I Total Recoverable Water 6010D 575387280-162293-6 MSD MW-9I Total Recoverable Prep Batch: 575615 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 3005A 575456280-162293-6 MW-9I Dissolved Water 3005A 575456280-162293-10 MW-19I Dissolved Water 3005A 575456280-162293-12 MW-14I Dissolved Water 3005A 575456MB 280-575456/1-C Method Blank Dissolved Water 3005A 575456LCS 280-575456/2-C Lab Control Sample Dissolved Water 3005A 575456280-162332-C-1-E MS Matrix Spike Dissolved Water 3005A 575456280-162332-C-1-F MSD Matrix Spike Duplicate Dissolved Eurofins Denver Page 116 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 280-162142-1Client: ERM-West Project/Site: EDO Western Corp. Metals Analysis Batch: 575804 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 6010D 575615280-162293-6 MW-9I Dissolved Water 6010D 575615280-162293-10 MW-19I Dissolved Water 6010D 575615280-162293-12 MW-14I Dissolved Water 6010D 575615MB 280-575456/1-C Method Blank Dissolved Water 6010D 575615LCS 280-575456/2-C Lab Control Sample Dissolved Water 6010D 575615280-162332-C-1-E MS Matrix Spike Dissolved Water 6010D 575615280-162332-C-1-F MSD Matrix Spike Duplicate Dissolved General Chemistry Analysis Batch: 575014 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 9060A280-162293-10 MW-19I Total/NA Water 9060A280-162293-12 MW-14I Total/NA Water 9060AMB 280-575014/4 Method Blank Total/NA Water 9060ALCS 280-575014/3 Lab Control Sample Total/NA Water 9060A280-162192-B-18 MS Matrix Spike Total/NA Water 9060A280-162192-B-18 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 575554 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 9060A280-162293-6 MW-9I Total/NA Water 9060AMB 280-575554/4 Method Blank Total/NA Water 9060ALCS 280-575554/3 Lab Control Sample Total/NA Water 9060A280-161909-B-4 MS Matrix Spike Total/NA Water 9060A280-161909-B-4 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 575823 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 9056A280-162293-6 MW-9I Total/NA Water 9056A280-162293-10 MW-19I Total/NA Water 9056A280-162293-12 MW-14I Total/NA Water 9056AMB 280-575823/6 Method Blank Total/NA Water 9056ALCS 280-575823/4 Lab Control Sample Total/NA Water 9056ALCSD 280-575823/5 Lab Control Sample Dup Total/NA Water 9056AMRL 280-575823/3 Lab Control Sample Total/NA Water 9056A280-162068-A-1 MS Matrix Spike Total/NA Water 9056A280-162068-A-1 MSD Matrix Spike Duplicate Total/NA Water 9056A280-162068-A-1 DU Duplicate Total/NA Eurofins Denver Page 117 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Client Sample ID: MW-17I Lab Sample ID: 280-162142-1 Matrix: WaterDate Collected: 05/09/22 14:35 Date Received: 05/10/22 14:50 Analysis 8260D CKL05/21/22 09:301 TAL DEN575756 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575778 05/22/22 02:23 GO TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-11 Lab Sample ID: 280-162142-2 Matrix: WaterDate Collected: 05/09/22 15:20 Date Received: 05/10/22 14:50 Analysis 8260D CKL05/21/22 09:511 TAL DEN575756 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575778 05/22/22 02:44 GO TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-11I Lab Sample ID: 280-162142-3 Matrix: WaterDate Collected: 05/09/22 15:55 Date Received: 05/10/22 14:50 Analysis 8260D CKL05/21/22 10:121 TAL DEN575756 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575778 05/22/22 03:05 GO TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-11I-c Lab Sample ID: 280-162142-4 Matrix: WaterDate Collected: 05/09/22 16:00 Date Received: 05/10/22 14:50 Analysis 8260D CKL05/21/22 10:331 TAL DEN575756 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575778 05/21/22 21:34 GO TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-5 Lab Sample ID: 280-162142-5 Matrix: WaterDate Collected: 05/09/22 14:10 Date Received: 05/10/22 14:50 Analysis 8260D CKL05/21/22 10:541 TAL DEN575756 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575778 05/22/22 03:26 GO TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-5I Lab Sample ID: 280-162142-6 Matrix: WaterDate Collected: 05/09/22 14:55 Date Received: 05/10/22 14:50 Analysis 8260D CKL05/21/22 11:151 TAL DEN575756 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575778 05/22/22 03:46 GO TAL DENTotal/NA 5 mL 5 mL Eurofins Denver Page 118 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Client Sample ID: MW-2 Lab Sample ID: 280-162142-7 Matrix: WaterDate Collected: 05/09/22 16:15 Date Received: 05/10/22 14:50 Analysis 8260D CKL05/21/22 11:361 TAL DEN575756 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575778 05/22/22 04:07 GO TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-3I Lab Sample ID: 280-162228-1 Matrix: WaterDate Collected: 05/10/22 10:15 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/23/22 20:561 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/22/22 20:33 CAS TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-3 Lab Sample ID: 280-162228-2 Matrix: WaterDate Collected: 05/10/22 11:05 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/23/22 21:171 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/22/22 20:54 CAS TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-2A Lab Sample ID: 280-162228-3 Matrix: WaterDate Collected: 05/10/22 12:50 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/23/22 21:381 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/22/22 21:14 CAS TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-2I Lab Sample ID: 280-162228-4 Matrix: WaterDate Collected: 05/10/22 12:10 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/23/22 21:591 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/22/22 21:35 CAS TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-15 Lab Sample ID: 280-162228-5 Matrix: WaterDate Collected: 05/10/22 15:20 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/23/22 22:201 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/22/22 21:56 CAS TAL DENTotal/NA 5 mL 5 mL Eurofins Denver Page 119 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Client Sample ID: MW-15I Lab Sample ID: 280-162228-6 Matrix: WaterDate Collected: 05/10/22 13:55 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/23/22 22:421 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/22/22 22:16 CAS TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-7I Lab Sample ID: 280-162228-7 Matrix: WaterDate Collected: 05/10/22 11:55 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/23/22 23:031 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/22/22 22:37 CAS TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-7 Lab Sample ID: 280-162228-8 Matrix: WaterDate Collected: 05/10/22 11:20 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/23/22 23:241 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/22/22 22:58 CAS TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-8 Lab Sample ID: 280-162228-9 Matrix: WaterDate Collected: 05/10/22 14:45 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/23/22 23:461 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/22/22 23:18 CAS TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-8-a Lab Sample ID: 280-162228-10 Matrix: WaterDate Collected: 05/10/22 14:45 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/24/22 00:071 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/22/22 23:39 CAS TAL DENTotal/NA 5 mL 5 mL Client Sample ID: B-1 Lab Sample ID: 280-162228-11 Matrix: WaterDate Collected: 05/10/22 13:40 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/24/22 00:281 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/22/22 23:59 CAS TAL DENTotal/NA 5 mL 5 mL Eurofins Denver Page 120 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Client Sample ID: B-3 Lab Sample ID: 280-162228-12 Matrix: WaterDate Collected: 05/10/22 12:55 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/24/22 00:491 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/23/22 00:20 CAS TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-20I Lab Sample ID: 280-162228-13 Matrix: WaterDate Collected: 05/10/22 10:30 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/24/22 01:101 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/23/22 00:40 CAS TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-15-c Lab Sample ID: 280-162228-14 Matrix: WaterDate Collected: 05/10/22 15:30 Date Received: 05/12/22 14:40 Analysis 8260D AJP05/24/22 01:321 TAL DEN575885 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575794 05/23/22 01:01 CAS TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-16 Lab Sample ID: 280-162293-1 Matrix: WaterDate Collected: 05/11/22 10:40 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/24/22 22:571 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575851 05/24/22 00:33 MD TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-16-c Lab Sample ID: 280-162293-2 Matrix: WaterDate Collected: 05/11/22 16:00 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/24/22 23:192 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575851 05/24/22 00:53 MD TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-6 Lab Sample ID: 280-162293-3 Matrix: WaterDate Collected: 05/11/22 11:30 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/24/22 23:401 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575851 05/24/22 01:14 MD TAL DENTotal/NA 5 mL 5 mL Eurofins Denver Page 121 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Client Sample ID: MW-6I Lab Sample ID: 280-162293-4 Matrix: WaterDate Collected: 05/11/22 12:00 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/25/22 00:011 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575851 05/24/22 01:35 MD TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-9 Lab Sample ID: 280-162293-5 Matrix: WaterDate Collected: 05/11/22 15:25 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/25/22 00:221 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575851 05/24/22 01:56 MD TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-9I Lab Sample ID: 280-162293-6 Matrix: WaterDate Collected: 05/11/22 14:25 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/25/22 00:4310 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575851 05/24/22 02:16 MD TAL DENTotal/NA 5 mL 5 mL Analysis RSK-175 1 575695 05/20/22 17:56 CAS TAL DENTotal/NA 20 mL 20 mL Filtration FILTRATION 575456 05/18/22 17:30 PFM TAL DENDissolved200 mL 200 mL Prep 3005A 575615 05/20/22 06:51 MAB TAL DENDissolved50 mL 50 mL Analysis 6010D 1 575804 05/20/22 20:39 LMT TAL DENDissolved Prep 3005A 575387 05/18/22 17:33 KMS TAL DENTotal Recoverable 50 mL 50 mL Analysis 6010D 1 575565 05/19/22 12:25 LMT TAL DENTotal Recoverable Analysis 9056A 5 575823 05/23/22 17:25 RAF TAL DENTotal/NA 10 mL 10 mL Analysis 9060A 1 575554 05/18/22 20:55 ABW TAL DENTotal/NA 20 mL 20 mL Client Sample ID: MW-13 Lab Sample ID: 280-162293-7 Matrix: WaterDate Collected: 05/11/22 13:25 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/25/22 01:041 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575851 05/23/22 23:51 MD TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-13I Lab Sample ID: 280-162293-8 Matrix: WaterDate Collected: 05/11/22 12:55 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/25/22 01:261 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575851 05/24/22 02:37 MD TAL DENTotal/NA 5 mL 5 mL Eurofins Denver Page 122 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Client Sample ID: MW-18I Lab Sample ID: 280-162293-9 Matrix: WaterDate Collected: 05/11/22 13:55 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/25/22 01:471 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575851 05/24/22 02:58 MD TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-19I Lab Sample ID: 280-162293-10 Matrix: WaterDate Collected: 05/11/22 12:25 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/25/22 02:081 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575851 05/24/22 03:19 MD TAL DENTotal/NA 5 mL 5 mL Analysis RSK-175 1 575695 05/20/22 18:09 CAS TAL DENTotal/NA 20 mL 20 mL Filtration FILTRATION 575456 05/18/22 17:30 PFM TAL DENDissolved200 mL 200 mL Prep 3005A 575615 05/20/22 06:51 MAB TAL DENDissolved50 mL 50 mL Analysis 6010D 1 575804 05/20/22 20:44 LMT TAL DENDissolved Prep 3005A 575387 05/18/22 17:33 KMS TAL DENTotal Recoverable 50 mL 50 mL Analysis 6010D 1 575565 05/19/22 12:41 LMT TAL DENTotal Recoverable Analysis 9056A 5 575823 05/23/22 18:10 RAF TAL DENTotal/NA 10 mL 10 mL Analysis 9060A 1 575014 05/15/22 02:43 ABW TAL DENTotal/NA 20 mL 20 mL Client Sample ID: MW-14 Lab Sample ID: 280-162293-11 Matrix: WaterDate Collected: 05/11/22 11:15 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/25/22 02:291 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575851 05/24/22 00:12 MD TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-14I Lab Sample ID: 280-162293-12 Matrix: WaterDate Collected: 05/11/22 09:55 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/25/22 02:512 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D DL 10 576238 05/26/22 12:09 CKL TAL DENTotal/NA 5 mL 5 mL Analysis 8260D SIM 1 575847 05/23/22 12:47 MD TAL DENTotal/NA 5 mL 5 mL Analysis RSK-175 1 575695 05/20/22 18:22 CAS TAL DENTotal/NA 20 mL 20 mL Filtration FILTRATION 575456 05/18/22 17:30 PFM TAL DENDissolved200 mL 200 mL Prep 3005A 575615 05/20/22 06:51 MAB TAL DENDissolved50 mL 50 mL Analysis 6010D 1 575804 05/20/22 20:48 LMT TAL DENDissolved Prep 3005A 575387 05/18/22 17:33 KMS TAL DENTotal Recoverable 50 mL 50 mL Analysis 6010D 1 575565 05/19/22 12:45 LMT TAL DENTotal Recoverable Analysis 9056A 5 575823 05/23/22 18:25 RAF TAL DENTotal/NA 10 mL 10 mL Analysis 9060A 1 575014 05/15/22 03:01 ABW TAL DENTotal/NA 20 mL 20 mL Eurofins Denver Page 123 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Client Sample ID: MW-4 Lab Sample ID: 280-162293-13 Matrix: WaterDate Collected: 05/11/22 16:45 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/25/22 03:121 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575847 05/23/22 13:07 MD TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-4I Lab Sample ID: 280-162293-14 Matrix: WaterDate Collected: 05/11/22 16:00 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/25/22 03:331 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575847 05/23/22 13:28 MD TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-18I-a Lab Sample ID: 280-162293-15 Matrix: WaterDate Collected: 05/11/22 13:55 Date Received: 05/12/22 10:20 Analysis 8260D SGB05/25/22 03:541 TAL DEN576078 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 575847 05/23/22 13:49 MD TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-10 Lab Sample ID: 280-162353-1 Matrix: WaterDate Collected: 05/12/22 10:40 Date Received: 05/13/22 14:55 Analysis 8260D AJP05/25/22 18:382 TAL DEN576171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 576090 05/25/22 13:18 MD TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-10I Lab Sample ID: 280-162353-2 Matrix: WaterDate Collected: 05/12/22 11:25 Date Received: 05/13/22 14:55 Analysis 8260D AJP05/25/22 19:005 TAL DEN576171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 576090 05/25/22 13:39 MD TAL DENTotal/NA 5 mL 5 mL Client Sample ID: MW-12 Lab Sample ID: 280-162353-3 Matrix: WaterDate Collected: 05/12/22 11:50 Date Received: 05/13/22 14:55 Analysis 8260D AJP05/25/22 19:211 TAL DEN576171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 576090 05/25/22 13:59 MD TAL DENTotal/NA 5 mL 5 mL Eurofins Denver Page 124 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Client Sample ID: MW-12-c Lab Sample ID: 280-162353-4 Matrix: WaterDate Collected: 05/12/22 12:30 Date Received: 05/13/22 14:55 Analysis 8260D AJP05/25/22 19:421 TAL DEN576171 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260D SIM 1 576090 05/25/22 14:20 MD TAL DENTotal/NA 5 mL 5 mL Laboratory References: TAL DEN = Eurofins Denver, 4955 Yarrow Street, Arvada, CO 80002, TEL (303)736-0100 Eurofins Denver Page 125 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Accreditation/Certification Summary Client: ERM-West Job ID: 280-162142-1 Project/Site: EDO Western Corp. Laboratory: Eurofins Denver The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date Utah NELAP CO000262019-11 07-31-22 Eurofins Denver Page 126 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 127 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Login Sample Receipt Checklist Client: ERM-West Job Number: 280-162142-1 Login Number: 162142 Question Answer Comment Creator: Rystrom, Joshua R List Source: Eurofins Denver List Number: 1 TrueRadioactivity wasn't checked or is </= background as measured by a survey meter. TrueThe cooler's custody seal, if present, is intact. TrueSample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded. TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. N/ASample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Denver Page 128 of 128 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ANALYTICAL REPORT Eurofins Denver 4955 Yarrow Street Arvada, CO 80002 Tel: (303)736-0100 Laboratory Job ID: 280-151322-1 Client Project/Site: EDO Western Corp. Revision: 1 For: ERM-West 1050 SW 6th Avenue Suite 1650 Portland, Oregon 97204 Attn: Mr. Justin Dauphinais Authorized for release by: 9/6/2022 9:41:30 PM Ken Hayes, Project Manager II (615)301-5035 Ken.Hayes@et.eurofinsus.com The test results in this report meet all 2003 NELAC, 2009 TNI, and 2016 TNI requirements for accredited parameters, exceptions are noted in this report. This report may not be reproduced except in full, and with written approval from the laboratory. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Results relate only to the items tested and the sample(s) as received by the laboratory. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Table of Contents Client: ERM-West Project/Site: EDO Western Corp. Laboratory Job ID: 280-151322-1 Page 2 of 139 Eurofins Denver 9/6/2022 (Rev. 1) Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .85 QC Association . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .123 Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .127 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .136 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .139 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Definitions/Glossary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Qualifiers GC/MS VOA Qualifier Description *1 LCS/LCSD RPD exceeds control limits. Qualifier B Compound was found in the blank and sample. J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Denver Page 3 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Job ID: 280-151322-1 Laboratory: Eurofins Denver Narrative Job Narrative 280-151322-1 Revised Report: Revised to combine all data from July 2021 in one report at the client's request. This report replaces the one generated on 08/03/2021. Receipt The samples were received on 7/29/2021 9:15 AM. Unless otherwise noted below, the samples arrived in good condition, and, where required, properly preserved and on ice. The temperatures of the 2 coolers at receipt time were 2.1°C and 4.0°C Receipt Exceptions There is a cooler missing for this job. Analysis and containers were added to reflect what volume was received. When the missing cooler is recieved the missing containers and analysis will be added. B-1 (280-151322-1), B-1 (280-151322-1[MS]), B-1 (280-151322-1[MSD]), B-3 (280-151322-2), MW-2 (280-151322-3), MW-2A (280-151322-4), MW-2I (280-151322-5), MW-3 (280-151322-6), MW-4 (280-151322-7), MW-4I (280-151322-8), MW-5 (280-151322-9), MW-5A (280-151322-10), MW-5I (280-151322-11), MW-12 (280-151322-12), MW-12I (280-151322-13), MW-13 (280-151322-14), MW-13I (280-151322-15), MW-14 (280-151322-16), MW-14I (280-151322-17), MW-14I-A (280-151322-18), MW-15 (280-151322-19), MW-15I (280-151322-20), MW-16 (280-151322-21), MW-2-C (280-151322-22) and MW-5I-C (280-151322-23) The origional COC is in the missing cooler for this job. Samples were logged per a copy of the COC received. B-1 (280-151322-1), B-1 (280-151322-1[MS]), B-1 (280-151322-1[MSD]), B-3 (280-151322-2), MW-2 (280-151322-3), MW-2A (280-151322-4), MW-2I (280-151322-5), MW-3 (280-151322-6), MW-4 (280-151322-7), MW-4I (280-151322-8), MW-5 (280-151322-9), MW-5A (280-151322-10), MW-5I (280-151322-11), MW-12 (280-151322-12), MW-12I (280-151322-13), MW-13 (280-151322-14), MW-13I (280-151322-15), MW-14 (280-151322-16), MW-14I (280-151322-17), MW-14I-A (280-151322-18), MW-15 (280-151322-19), MW-15I (280-151322-20), MW-16 (280-151322-21), MW-2-C (280-151322-22) and MW-5I-C (280-151322-23) The mising cooler was received on 07/30/2021 @ 09:20. These are the samples that were missing volume, volume and analysis were added into the job for the containers received. MW-2 (280-151322-3), MW-2A (280-151322-4), MW-2I (280-151322-5), MW-3 (280-151322-6), MW-4 (280-151322-7), MW-4I (280-151322-8), MW-5 (280-151322-9), MW-5A (280-151322-10), MW-5I (280-151322-11), MW-12 (280-151322-12), MW-12I (280-151322-13), MW-14I (280-151322-17), MW-15 (280-151322-19), MW-15I (280-151322-20), MW-16 (280-151322-21) and MW-2-C (280-151322-22) THe COC was signed with the latest date/time of receipt per when the origional COC was received. B-1 (280-151322-1), B-1 (280-151322-1[MS]), B-1 (280-151322-1[MSD]), B-3 (280-151322-2), MW-2 (280-151322-3), MW-2A (280-151322-4), MW-2I (280-151322-5), MW-3 (280-151322-6), MW-4 (280-151322-7), MW-4I (280-151322-8), MW-5 (280-151322-9), MW-5A (280-151322-10), MW-5I (280-151322-11), MW-12 (280-151322-12), MW-12I (280-151322-13), MW-13 (280-151322-14), MW-13I (280-151322-15), MW-14 (280-151322-16), MW-14I (280-151322-17), MW-14I-A (280-151322-18), MW-15 (280-151322-19), MW-15I (280-151322-20), MW-16 (280-151322-21), MW-2-C (280-151322-22) and MW-5I-C (280-151322-23) The container label for the following sample did not match the information listed on the Chain-of-Custody (COC): 1/6 VOA containers has a sample time of 14:15, while the COC lists 14:20. Sample was logged per the time on the COC.MW-5A (280-151322-10). GC/MS VOA Method 8260B: The following sample was collected in a properly preserved vial; however, the pH of 5 was outside the required criteria of <2 when verified by the laboratory. The sample was analyzed within the 7-day holding time specified for unpreserved samples: MW-5I-C (280-151322-23). No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page. Narrative Job Narrative 280-151322-2 Eurofins Denver Page 4 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Job ID: 280-151322-1 (Continued) Laboratory: Eurofins Denver (Continued) Receipt The samples were received on 7/29/2021 9:15 AM. Unless otherwise noted below, the samples arrived in good condition, and, where required, properly preserved and on ice. The temperatures of the 2 coolers at receipt time were 2.1°C and 4.0°C Receipt Exceptions There is a cooler missing for this job. Analysis and containers were added to reflect what volume was received. When the missing cooler is recieved the missing containers and analysis will be added. B-1 (280-151322-1), B-1 (280-151322-1[MS]), B-1 (280-151322-1[MSD]), B-3 (280-151322-2), MW-2 (280-151322-3), MW-2A (280-151322-4), MW-2I (280-151322-5), MW-3 (280-151322-6), MW-4 (280-151322-7), MW-4I (280-151322-8), MW-5 (280-151322-9), MW-5A (280-151322-10), MW-5I (280-151322-11), MW-12 (280-151322-12), MW-12I (280-151322-13), MW-13 (280-151322-14), MW-13I (280-151322-15), MW-14 (280-151322-16), MW-14I (280-151322-17), MW-14I-A (280-151322-18), MW-15 (280-151322-19), MW-15I (280-151322-20), MW-16 (280-151322-21), MW-2-C (280-151322-22) and MW-5I-C (280-151322-23) The origional COC is in the missing cooler for this job. Samples were logged per a copy of the COC received. B-1 (280-151322-1), B-1 (280-151322-1[MS]), B-1 (280-151322-1[MSD]), B-3 (280-151322-2), MW-2 (280-151322-3), MW-2A (280-151322-4), MW-2I (280-151322-5), MW-3 (280-151322-6), MW-4 (280-151322-7), MW-4I (280-151322-8), MW-5 (280-151322-9), MW-5A (280-151322-10), MW-5I (280-151322-11), MW-12 (280-151322-12), MW-12I (280-151322-13), MW-13 (280-151322-14), MW-13I (280-151322-15), MW-14 (280-151322-16), MW-14I (280-151322-17), MW-14I-A (280-151322-18), MW-15 (280-151322-19), MW-15I (280-151322-20), MW-16 (280-151322-21), MW-2-C (280-151322-22) and MW-5I-C (280-151322-23) The mising cooler was received on 07/30/2021 @ 09:20. These are the samples that were missing volume, volume and analysis were added into the job for the containers received. MW-2 (280-151322-3), MW-2A (280-151322-4), MW-2I (280-151322-5), MW-3 (280-151322-6), MW-4 (280-151322-7), MW-4I (280-151322-8), MW-5 (280-151322-9), MW-5A (280-151322-10), MW-5I (280-151322-11), MW-12 (280-151322-12), MW-12I (280-151322-13), MW-14I (280-151322-17), MW-15 (280-151322-19), MW-15I (280-151322-20), MW-16 (280-151322-21) and MW-2-C (280-151322-22) THe COC was signed with the latest date/time of receipt per when the origional COC was received. B-1 (280-151322-1), B-1 (280-151322-1[MS]), B-1 (280-151322-1[MSD]), B-3 (280-151322-2), MW-2 (280-151322-3), MW-2A (280-151322-4), MW-2I (280-151322-5), MW-3 (280-151322-6), MW-4 (280-151322-7), MW-4I (280-151322-8), MW-5 (280-151322-9), MW-5A (280-151322-10), MW-5I (280-151322-11), MW-12 (280-151322-12), MW-12I (280-151322-13), MW-13 (280-151322-14), MW-13I (280-151322-15), MW-14 (280-151322-16), MW-14I (280-151322-17), MW-14I-A (280-151322-18), MW-15 (280-151322-19), MW-15I (280-151322-20), MW-16 (280-151322-21), MW-2-C (280-151322-22) and MW-5I-C (280-151322-23) The container label for the following sample(s) did not match the information listed on the Chain-of-Custody (COC): 1/6 VOA containers has a sample time of 14:15, while the COC lists 14:20. Sample was logged per the time on the COC.MW-5A (280-151322-10). GC/MS VOA No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page. Narrative Job Narrative 280-151378-1 Revised Report: Revised to report analysis of samples previously on hold. This report replaces the one generated on Receipt The samples were received on 7/31/2021 9:35 AM. Unless otherwise noted below, the samples arrived in good condition, and, where required, properly preserved and on ice. The temperature of the cooler at receipt time was 3.9°C Receipt Exceptions 1 of 2 coolers were recieved. Logged per all samples per COC and only the analysis for the samples that were recieved. The following samples are what is missing: MW-3I (280-151378-1), MW-6I (280-151378-3), MW-8 (280-151378-4), MW-19I (280-151378-9), MW-17I-c (280-151378-12), MW-9I Eurofins Denver Page 5 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Job ID: 280-151322-1 (Continued) Laboratory: Eurofins Denver (Continued) (280-151378-16), MW-10 (280-151378-17), MW-7 (280-151378-19) and MW-7I (280-151378-20) The container label for the following sample did not match the information listed on the Chain-of-Custody (COC): MW-9 (280-151378-14). Time on container reads 0900. COC reads 0905. Logged per COC. GC/MS VOA Method 8260B: The continuing calibration verification (CCV) associated with batch 280-545303 recovered above the upper control limit (35%D) for Chloromethane (39.1%D). The samples associated with this CCV were non-detect for the affected analyte; therefore, the data have been reported. The associated samples are impacted: MW-9 (280-151378-14), MW-9-a (280-151378-15), MW-10I (280-151378-18) and (CCV 280-545303/2). Method 8260B: The RPD of the laboratory control sample (LCS) and laboratory control sample duplicate (LCSD) for analytical batch 280-545303 recovered outside control limits (20%RPD) Chloroethane for the following analytes: 1,1-Dichloroethene (24%R), Benzene (23%), Carbon disulfide (23%), Carbon tetrachloride (24%), Benzene, 1,1,1-Trichloroethane (22%R), Trichlorofluoromethane (24%R), Methylene Chloride (21%R), Dibromomethane (25%), Dichlorobromomethane (21%R), Chloroethane (21%R), cis-1,2-Dichloroethene (20%), 1,1,2-Trichloro-1,2,2-trifluoroethane (21%R), Dichlorodifluoromethane (33%). All compounds are reportable because while the LCS & LCSD exceeded method limits for RPD, both LCS/LCSD recovered within control limits. Method 8260B: Insufficient sample volume was available to perform a matrix spike/matrix spike duplicate (MS/MSD) associated with analytical batch 280-545303 . An LCS/LCSD pair was analyzed for batch precision and accuracy. Method 8260B: The RPD of the laboratory control sample (LCS) and laboratory control sample duplicate (LCSD) for analytical batch 280-545459 was outside control limits for the following analytes: 1,1,2-Trichloro-1,2,2-trifluoroethane and methylcyclohexane. The LCS and LCSD recovered the analyte within control limits; therefore, the data has been reported. The associated samples are: MW-6 (280-151378-2), MW-11 (280-151378-5), MW-11I (280-151378-6), MW-17I (280-151378-7), MW-18I (280-151378-8), MW-20I (280-151378-10), MW-20I-a (280-151378-11) and MW-8-c (280-151378-13). Method 8260B: The following sample was collected in a properly preserved vial; however, the pH of 7 was outside the required criteria (pH<2) when verified by the laboratory. The sample was analyzed within the 7-day holding time specified for unpreserved samples: MW-8-c (280-151378-13). Method 8260B: Due to the high concentration of Tetrachloroethene, the matrix spike / matrix spike duplicate (MS/MSD) for analytical batch 280-546190 could not be evaluated for accuracy and precision. The associated laboratory control sample / laboratory control sample duplicate (LCS/LCSD) met acceptance criteria for this compound. Method 8260B: Insufficient sample volume was available to perform a matrix spike/matrix spike duplicate (MS/MSD) associated with analytical batch 280-546332 . An LCS/LCSD pair was analyzed for batch precision and accuracy. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Narrative Job Narrative 280-151378-2 REVISED REPORT: Revised to report samples that had been received warm. This report replaces the one generated on 08/11/21 @ Receipt The samples were received on 7/31/2021 9:35 AM. Unless otherwise noted below, the samples arrived in good condition, and, where required, properly preserved and on ice. The temperature of the cooler at receipt time was 3.9°C Receipt Exceptions 1 of 2 coolers were recieved. Logged per all samples per COC and only the analysis for the samples that were recieved. The following samples are what is missing: MW-3I (280-151378-1), MW-6I (280-151378-3), MW-8 (280-151378-4), MW-19I (280-151378-9), MW-17I-c (280-151378-12), MW-9I (280-151378-16), MW-10 (280-151378-17), MW-7 (280-151378-19) and MW-7I (280-151378-20) Eurofins Denver Page 6 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Job ID: 280-151322-1 (Continued) Laboratory: Eurofins Denver (Continued) The container label for the following sample did not match the information listed on the Chain-of-Custody (COC): MW-9 (280-151378-14). Time on container reads 0900. COC reads 0905. Logged per COC. GC/MS VOA Method 8260B SIM: The reporting limit of 0.02ug/L provided for Tetrachloroethene falls below the laboratory's lowest calibration standard of 0.025ug/L. Results reported below the lowest calibration standard have less certainty (i.e., are estimated). Method 8260B SIM: The method blank for analytical batch 280-546098 contained 1,4-Dioxane above the method detection limit (MDL). Associated sample(s) were not re-extracted and/or re-analyzed because results were greater than 10X the value found in the method blank. Method 8260B SIM: Insufficient sample volume was available to perform a matrix spike/matrix spike duplicate (MS/MSD) associated with analytical batch 280-546258. An LCS/LCSD pair was analyzed for batch precision and accuracy. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Narrative Job Narrative 280-151937-1 Receipt The samples were received on 8/17/2021 9:30 AM. Unless otherwise noted below, the samples arrived in good condition, and, where required, properly preserved and on ice. The temperature of the cooler at receipt time was 4.6°C Receipt Exceptions Mnimum/limited volume was received for each of these samples. MW-8-c (280-151937-2), MW-10 (280-151937-3[MS]) and MW-10 (280-151937-3[MSD]) A trip blank was submitted for analysis with these samples; however, it was not listed on the Chain of Custody (COC). GC/MS VOA No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page. Narrative Job Narrative 280-151937-2 Comments No additional comments. Receipt The samples were received on 8/17/2021 9:30 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 4.6º C. Receipt Exceptions Mnimum/limited volume was received for each of these samples. MW-8-c (280-151937-2), MW-10 (280-151937-3[MS]) and MW-10 (280-151937-3[MSD]) A trip blank was submitted for analysis with these samples; however, it was not listed on the Chain of Custody (COC). GC/MS VOA Eurofins Denver Page 7 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Job ID: 280-151322-1 (Continued) Laboratory: Eurofins Denver (Continued) No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Eurofins Denver Page 8 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Client Sample ID: B-1 Lab Sample ID: 280-151322-1 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA12.81 8260B SIM cis-1,2-Dichloroethene 1.00 ug/L Total/NA11.87 8260B 1,2-Dichlorobenzene 1.00 ug/L Total/NA11.00 8260B Client Sample ID: B-3 Lab Sample ID: 280-151322-2 No Detections. Client Sample ID: MW-2 Lab Sample ID: 280-151322-3 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.372 8260B SIM Client Sample ID: MW-2A Lab Sample ID: 280-151322-4 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.796 8260B SIM cis-1,2-Dichloroethene 1.00 ug/L Total/NA11.25 8260B Client Sample ID: MW-2I Lab Sample ID: 280-151322-5 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.271 8260B SIM Client Sample ID: MW-3 Lab Sample ID: 280-151322-6 cis-1,2-Dichloroethene RL 1.00 ug/L MDLAnalyteResult Qualifier Unit Dil Fac D Method Prep Type Total/NA11.09 8260B Client Sample ID: MW-4 Lab Sample ID: 280-151322-7 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA16.82 8260B SIM cis-1,2-Dichloroethene 1.00 ug/L Total/NA153.3 8260B 1,1-Dichloroethane 1.00 ug/L Total/NA18.74 8260B 1,2-Dichloroethane 1.00 ug/L Total/NA11.76 8260B 1,1-Dichloroethene 1.00 ug/L Total/NA12.89 8260B Vinyl chloride 1.00 ug/L Total/NA11.60 8260B Client Sample ID: MW-4I Lab Sample ID: 280-151322-8 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA120.4 8260B SIM Chloroethane 2.00 ug/L Total/NA12.12 8260B Client Sample ID: MW-5 Lab Sample ID: 280-151322-9 No Detections. Client Sample ID: MW-5A Lab Sample ID: 280-151322-10 No Detections. Client Sample ID: MW-5I Lab Sample ID: 280-151322-11 No Detections. Eurofins Denver This Detection Summary does not include radiochemical test results. Page 9 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Client Sample ID: MW-12 Lab Sample ID: 280-151322-12 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA11.49 8260B SIM cis-1,2-Dichloroethene 1.00 ug/L Total/NA156.2 8260B 1,1-Dichloroethane 1.00 ug/L Total/NA12.80 8260B 1,1-Dichloroethene 1.00 ug/L Total/NA11.09 8260B trans-1,2-Dichloroethene 1.00 ug/L Total/NA12.41 8260B Vinyl chloride 1.00 ug/L Total/NA12.94 8260B Client Sample ID: MW-12I Lab Sample ID: 280-151322-13 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA17.07 8260B SIM 1,1-Dichloroethane 1.00 ug/L Total/NA19.46 8260B 1,2-Dichloroethane 1.00 ug/L Total/NA159.7 8260B 1,1-Dichloroethene 1.00 ug/L Total/NA113.4 8260B trans-1,2-Dichloroethene 1.00 ug/L Total/NA15.79 8260B Trichloroethene 1.00 ug/L Total/NA136.5 8260B Vinyl chloride 1.00 ug/L Total/NA113.8 8260B cis-1,2-Dichloroethene - DL 10.0 ug/L Total/NA102458260B Client Sample ID: MW-13 Lab Sample ID: 280-151322-14 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA11.78 8260B SIM cis-1,2-Dichloroethene 1.00 ug/L Total/NA11048260B 1,1-Dichloroethane 1.00 ug/L Total/NA13.52 8260B 1,1-Dichloroethene 1.00 ug/L Total/NA11.58 8260B Client Sample ID: MW-13I Lab Sample ID: 280-151322-15 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA15.26 8260B SIM cis-1,2-Dichloroethene 1.00 ug/L Total/NA11748260B 1,1-Dichloroethane 1.00 ug/L Total/NA113.5 8260B 1,2-Dichloroethane 1.00 ug/L Total/NA15.09 8260B 1,1-Dichloroethene 1.00 ug/L Total/NA19.21 8260B Tetrachloroethene 1.00 ug/L Total/NA162.4 8260B trans-1,2-Dichloroethene 1.00 ug/L Total/NA110.1 8260B Trichloroethene 1.00 ug/L Total/NA11168260B Vinyl chloride 1.00 ug/L Total/NA12.43 8260B Client Sample ID: MW-14 Lab Sample ID: 280-151322-16 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.305 8260B SIM Client Sample ID: MW-14I Lab Sample ID: 280-151322-17 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA125.5 8260B SIM 1,1-Dichloroethane 1.00 ug/L Total/NA143.0 8260B 1,2-Dichloroethane 1.00 ug/L Total/NA18.04 8260B 1,1-Dichloroethene 1.00 ug/L Total/NA121.3 8260B Tetrachloroethene 1.00 ug/L Total/NA136.0 8260B Eurofins Denver This Detection Summary does not include radiochemical test results. Page 10 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Client Sample ID: MW-14I (Continued)Lab Sample ID: 280-151322-17 trans-1,2-Dichloroethene RL 1.00 ug/L MDLAnalyteResult Qualifier Unit Dil Fac D Method Prep Type Total/NA13.61 8260B Trichloroethene 1.00 ug/L Total/NA11448260B Vinyl chloride 1.00 ug/L Total/NA117.6 8260B cis-1,2-Dichloroethene - DL 10.0 ug/L Total/NA102858260B Client Sample ID: MW-14I-A Lab Sample ID: 280-151322-18 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA126.3 8260B SIM cis-1,2-Dichloroethene 4.00 ug/L Total/NA43188260B 1,1-Dichloroethane 4.00 ug/L Total/NA439.8 8260B 1,2-Dichloroethane 4.00 ug/L Total/NA47.82 8260B 1,1-Dichloroethene 4.00 ug/L Total/NA420.1 8260B Tetrachloroethene 4.00 ug/L Total/NA440.0 8260B Trichloroethene 4.00 ug/L Total/NA41398260B Vinyl chloride 4.00 ug/L Total/NA415.3 8260B Client Sample ID: MW-15 Lab Sample ID: 280-151322-19 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.635 8260B SIM cis-1,2-Dichloroethene 1.00 ug/L Total/NA115.4 8260B Vinyl chloride 1.00 ug/L Total/NA12.34 8260B Client Sample ID: MW-15I Lab Sample ID: 280-151322-20 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA116.4 8260B SIM 1,1-Dichloroethane 2.00 ug/L Total/NA225.8 8260B 1,2-Dichloroethane 2.00 ug/L Total/NA23.39 8260B 1,1-Dichloroethene 2.00 ug/L Total/NA226.8 8260B Tetrachloroethene 2.00 ug/L Total/NA221.6 8260B trans-1,2-Dichloroethene 2.00 ug/L Total/NA26.93 8260B Trichloroethene 2.00 ug/L Total/NA21928260B Vinyl chloride 2.00 ug/L Total/NA215.5 8260B cis-1,2-Dichloroethene - DL 10.0 ug/L Total/NA103678260B Client Sample ID: MW-16 Lab Sample ID: 280-151322-21 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA12.54 8260B SIM cis-1,2-Dichloroethene 1.00 ug/L Total/NA157.9 8260B 1,1-Dichloroethane 1.00 ug/L Total/NA12.42 8260B trans-1,2-Dichloroethene 1.00 ug/L Total/NA12.85 8260B Vinyl chloride 1.00 ug/L Total/NA110.7 8260B Client Sample ID: MW-2-C Lab Sample ID: 280-151322-22 No Detections. Client Sample ID: MW-5I-C Lab Sample ID: 280-151322-23 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.730 8260B SIM Eurofins Denver This Detection Summary does not include radiochemical test results. Page 11 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Client Sample ID: MW-3I Lab Sample ID: 280-151378-1 No Detections. 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.420 8260B SIM Client Sample ID: MW-6 Lab Sample ID: 280-151378-2 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.384 8260B SIM cis-1,2-Dichloroethene 1.00 ug/L Total/NA130.0 8260B Trichloroethene 1.00 ug/L Total/NA110.3 8260B Client Sample ID: MW-6I Lab Sample ID: 280-151378-3 No Detections. 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J1.02 8260B SIM Client Sample ID: MW-11 Lab Sample ID: 280-151378-5 No Detections. Client Sample ID: MW-11I Lab Sample ID: 280-151378-6 No Detections. 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.804 8260B SIM Client Sample ID: MW-17I Lab Sample ID: 280-151378-7 No Detections. 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J1.21 8260B SIM Client Sample ID: MW-18I Lab Sample ID: 280-151378-8 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA18.09 8260B SIM cis-1,2-Dichloroethene 1.00 ug/L Total/NA15.02 8260B 1,1-Dichloroethane 1.00 ug/L Total/NA112.1 8260B 1,1-Dichloroethene 1.00 ug/L Total/NA13.93 8260B Vinyl chloride 1.00 ug/L Total/NA15.47 8260B Client Sample ID: MW-20I Lab Sample ID: 280-151378-10 No Detections. 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.492 8260B SIM Client Sample ID: MW-20I-a Lab Sample ID: 280-151378-11 No Detections. 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.609 8260B SIM Client Sample ID: MW-8-c Lab Sample ID: 280-151378-13 No Detections. Eurofins Denver This Detection Summary does not include radiochemical test results. Page 12 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Client Sample ID: MW-8-c (Continued)Lab Sample ID: 280-151378-13 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.289 8260B SIM Client Sample ID: MW-9 Lab Sample ID: 280-151378-14 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA11.73 8260B SIM cis-1,2-Dichloroethene 5.00 ug/L Total/NA53068260B trans-1,2-Dichloroethene 5.00 ug/L Total/NA56.68 8260B Vinyl chloride 5.00 ug/L Total/NA521.0 8260B Client Sample ID: MW-9-a Lab Sample ID: 280-151378-15 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J1.38 8260B SIM cis-1,2-Dichloroethene 5.00 ug/L Total/NA53178260B trans-1,2-Dichloroethene 5.00 ug/L Total/NA55.30 8260B Vinyl chloride 5.00 ug/L Total/NA517.7 8260B Client Sample ID: MW-9I Lab Sample ID: 280-151378-16 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1B7.82 8260B SIM 1,1-Dichloroethane 1.00 ug/L Total/NA13.86 8260B 1,2-Dichloroethane 1.00 ug/L Total/NA132.5 8260B 1,1-Dichloroethene 1.00 ug/L Total/NA130.5 8260B Tetrachloroethene 1.00 ug/L Total/NA113.9 8260B trans-1,2-Dichloroethene 1.00 ug/L Total/NA128.5 8260B Vinyl chloride 1.00 ug/L Total/NA117.5 8260B cis-1,2-Dichloroethene - DL 20.0 ug/L Total/NA2013808260B Trichloroethene - DL 20.0 ug/L Total/NA202128260B Client Sample ID: MW-10I Lab Sample ID: 280-151378-18 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA15.80 8260B SIM cis-1,2-Dichloroethene 10.0 ug/L Total/NA106998260B 1,1-Dichloroethene 10.0 ug/L Total/NA1014.3 *1 8260B trans-1,2-Dichloroethene 10.0 ug/L Total/NA1033.9 8260B Trichloroethene 10.0 ug/L Total/NA1040.7 8260B Client Sample ID: MW-7 Lab Sample ID: 280-151378-19 No Detections. 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.499 8260B SIM Client Sample ID: MW-7I Lab Sample ID: 280-151378-20 No Detections. 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.439 8260B SIM Eurofins Denver This Detection Summary does not include radiochemical test results. Page 13 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Client Sample ID: MW-8 Lab Sample ID: 280-151937-1 1,4-Dioxane RL 5.60 ug/L MDL 1.07 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA421.0 8260B SIM cis-1,2-Dichloroethene 4.00 ug/L Total/NA42678260B 1,1-Dichloroethane 4.00 ug/L Total/NA440.1 8260B 1,2-Dichloroethane 4.00 ug/L Total/NA46.39 8260B 1,1-Dichloroethene 4.00 ug/L Total/NA413.0 8260B Tetrachloroethene 4.00 ug/L Total/NA434.1 8260B Trichloroethene 4.00 ug/L Total/NA41628260B Vinyl chloride 4.00 ug/L Total/NA431.4 8260B Client Sample ID: MW-8-c Lab Sample ID: 280-151937-2 No Detections. Client Sample ID: MW-10 Lab Sample ID: 280-151937-3 1,4-Dioxane RL 1.40 ug/L MDL 0.267 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA12.11 8260B SIM cis-1,2-Dichloroethene 5.00 ug/L Total/NA54348260B 1,1-Dichloroethene 5.00 ug/L Total/NA56.18 8260B trans-1,2-Dichloroethene 5.00 ug/L Total/NA513.8 8260B Client Sample ID: MW-19I Lab Sample ID: 280-151937-4 1,4-Dioxane RL 2.80 ug/L MDL 0.534 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA235.8 8260B SIM cis-1,2-Dichloroethene 2.00 ug/L Total/NA21358260B 1,1-Dichloroethane 2.00 ug/L Total/NA231.2 8260B 1,2-Dichloroethane 2.00 ug/L Total/NA27.78 8260B 1,1-Dichloroethene 2.00 ug/L Total/NA227.1 8260B Tetrachloroethene 2.00 ug/L Total/NA217.3 8260B trans-1,2-Dichloroethene 2.00 ug/L Total/NA24.76 8260B Trichloroethene 2.00 ug/L Total/NA282.2 8260B Vinyl chloride 2.00 ug/L Total/NA218.5 8260B Client Sample ID: TRIP BLANK Lab Sample ID: 280-151937-5 No Detections. Eurofins Denver This Detection Summary does not include radiochemical test results. Page 14 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Method Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method Method Description LaboratoryProtocol SW8468260BVolatile Organic Compounds (GC/MS)EET DEN SW8465030BPurge and Trap EET DEN Protocol References: SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: EET DEN = Eurofins Denver, 4955 Yarrow Street, Arvada, CO 80002, TEL (303)736-0100 Eurofins Denver Page 15 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sample Summary Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Lab Sample ID Client Sample ID Matrix Collected Received 280-151322-1 B-1 Water 07/27/21 11:40 07/29/21 09:15 280-151322-2 B-3 Water 07/27/21 10:15 07/29/21 09:15 280-151322-3 MW-2 Water 07/28/21 09:25 07/29/21 09:15 280-151322-4 MW-2A Water 07/27/21 14:30 07/29/21 09:15 280-151322-5 MW-2I Water 07/27/21 13:30 07/29/21 09:15 280-151322-6 MW-3 Water 07/27/21 14:55 07/29/21 09:15 280-151322-7 MW-4 Water 07/28/21 14:00 07/29/21 09:15 280-151322-8 MW-4I Water 07/28/21 15:00 07/29/21 09:15 280-151322-9 MW-5 Water 07/28/21 14:15 07/29/21 09:15 280-151322-10 MW-5A Water 07/28/21 14:20 07/29/21 09:15 280-151322-11 MW-5I Water 07/28/21 13:40 07/29/21 09:15 280-151322-12 MW-12 Water 07/28/21 11:15 07/29/21 09:15 280-151322-13 MW-12I Water 07/28/21 10:35 07/29/21 09:15 280-151322-14 MW-13 Water 07/27/21 14:05 07/29/21 09:15 280-151322-15 MW-13I Water 07/27/21 13:25 07/29/21 09:15 280-151322-16 MW-14 Water 07/27/21 11:25 07/29/21 09:15 280-151322-17 MW-14I Water 07/27/21 10:25 07/29/21 09:15 280-151322-18 MW-14I-A Water 07/27/21 10:30 07/29/21 09:15 280-151322-19 MW-15 Water 07/28/21 07:30 07/29/21 09:15 280-151322-20 MW-15I Water 07/28/21 08:55 07/29/21 09:15 280-151322-21 MW-16 Water 07/28/21 11:25 07/29/21 09:15 280-151322-22 MW-2-C Water 07/28/21 09:25 07/29/21 09:15 280-151322-23 MW-5I-C Water 07/28/21 13:40 07/29/21 09:15 280-151378-1 MW-3I Water 07/29/21 08:20 07/31/21 09:35 280-151378-2 MW-6 Water 07/29/21 09:45 07/31/21 09:35 280-151378-3 MW-6I Water 07/29/21 09:08 07/31/21 09:35 280-151378-5 MW-11 Water 07/29/21 14:10 07/31/21 09:35 280-151378-6 MW-11I Water 07/29/21 13:30 07/31/21 09:35 280-151378-7 MW-17I Water 07/29/21 09:15 07/31/21 09:35 280-151378-8 MW-18I Water 07/29/21 10:25 07/31/21 09:35 280-151378-10 MW-20I Water 07/29/21 11:25 07/31/21 09:35 280-151378-11 MW-20I-a Water 07/29/21 11:30 07/31/21 09:35 280-151378-13 MW-8-c Water 07/29/21 11:05 07/31/21 09:35 280-151378-14 MW-9 Water 07/30/21 09:05 07/31/21 09:35 280-151378-15 MW-9-a Water 07/30/21 09:05 07/31/21 09:35 280-151378-16 MW-9I Water 07/30/21 09:10 07/31/21 09:35 280-151378-18 MW-10I Water 07/30/21 09:50 07/31/21 09:35 280-151378-19 MW-7 Water 07/30/21 10:40 07/31/21 09:35 280-151378-20 MW-7I Water 07/30/21 10:55 07/31/21 09:35 280-151937-1 MW-8 Water 08/12/21 11:20 08/17/21 09:30 280-151937-2 MW-8-c Water 08/12/21 11:20 08/17/21 09:30 280-151937-3 MW-10 Water 08/12/21 10:05 08/17/21 09:30 280-151937-4 MW-19I Water 08/12/21 09:05 08/17/21 09:30 280-151937-5 TRIP BLANK Water 08/12/21 09:05 08/17/21 09:30 Eurofins Denver Page 16 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151322-1Client Sample ID: B-1 Matrix: WaterDate Collected: 07/27/21 11:40 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 2.81 1.40 0.267 ug/L 08/02/21 22:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)105 70 -127 08/02/21 22:59 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-2Client Sample ID: B-3 Matrix: WaterDate Collected: 07/27/21 10:15 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/03/21 00:08 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)105 70 -127 08/03/21 00:08 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-3Client Sample ID: MW-2 Matrix: WaterDate Collected: 07/28/21 09:25 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 0.372 J 1.40 0.267 ug/L 08/03/21 16:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)105 70 -127 08/03/21 16:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-4Client Sample ID: MW-2A Matrix: WaterDate Collected: 07/27/21 14:30 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 0.796 J 1.40 0.267 ug/L 08/03/21 00:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/03/21 00:31 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-5Client Sample ID: MW-2I Matrix: WaterDate Collected: 07/27/21 13:30 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 0.271 J 1.40 0.267 ug/L 08/03/21 00:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)104 70 -127 08/03/21 00:54 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-6Client Sample ID: MW-3 Matrix: WaterDate Collected: 07/27/21 14:55 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/03/21 01:17 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)105 70 -127 08/03/21 01:17 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 17 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151322-7Client Sample ID: MW-4 Matrix: WaterDate Collected: 07/28/21 14:00 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 6.82 1.40 0.267 ug/L 08/03/21 17:08 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)105 70 -127 08/03/21 17:08 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-8Client Sample ID: MW-4I Matrix: WaterDate Collected: 07/28/21 15:00 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 20.4 1.40 0.267 ug/L 08/03/21 17:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/03/21 17:32 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-9Client Sample ID: MW-5 Matrix: WaterDate Collected: 07/28/21 14:15 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/03/21 17:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)105 70 -127 08/03/21 17:55 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-10Client Sample ID: MW-5A Matrix: WaterDate Collected: 07/28/21 14:20 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/03/21 18:18 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)107 70 -127 08/03/21 18:18 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-11Client Sample ID: MW-5I Matrix: WaterDate Collected: 07/28/21 13:40 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/03/21 18:41 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/03/21 18:41 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-12Client Sample ID: MW-12 Matrix: WaterDate Collected: 07/28/21 11:15 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 1.49 1.40 0.267 ug/L 08/03/21 19:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/03/21 19:04 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 18 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151322-13Client Sample ID: MW-12I Matrix: WaterDate Collected: 07/28/21 10:35 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 7.07 1.40 0.267 ug/L 08/03/21 19:27 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)104 70 -127 08/03/21 19:27 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-14Client Sample ID: MW-13 Matrix: WaterDate Collected: 07/27/21 14:05 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 1.78 1.40 0.267 ug/L 08/03/21 01:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/03/21 01:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-15Client Sample ID: MW-13I Matrix: WaterDate Collected: 07/27/21 13:25 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 5.26 1.40 0.267 ug/L 08/03/21 02:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/03/21 02:03 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-16Client Sample ID: MW-14 Matrix: WaterDate Collected: 07/27/21 11:25 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 0.305 J 1.40 0.267 ug/L 08/03/21 02:26 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)105 70 -127 08/03/21 02:26 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-17Client Sample ID: MW-14I Matrix: WaterDate Collected: 07/27/21 10:25 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 25.5 1.40 0.267 ug/L 08/03/21 02:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/03/21 02:49 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-18Client Sample ID: MW-14I-A Matrix: WaterDate Collected: 07/27/21 10:30 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 26.3 1.40 0.267 ug/L 08/03/21 03:13 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)105 70 -127 08/03/21 03:13 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 19 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151322-19Client Sample ID: MW-15 Matrix: WaterDate Collected: 07/28/21 07:30 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 0.635 J 1.40 0.267 ug/L 08/03/21 19:50 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)107 70 -127 08/03/21 19:50 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-20Client Sample ID: MW-15I Matrix: WaterDate Collected: 07/28/21 08:55 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 16.4 1.40 0.267 ug/L 08/03/21 20:13 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/03/21 20:13 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-21Client Sample ID: MW-16 Matrix: WaterDate Collected: 07/28/21 11:25 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 2.54 1.40 0.267 ug/L 08/03/21 20:36 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/03/21 20:36 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-22Client Sample ID: MW-2-C Matrix: WaterDate Collected: 07/28/21 09:25 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/03/21 20:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/03/21 20:59 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151322-23Client Sample ID: MW-5I-C Matrix: WaterDate Collected: 07/28/21 13:40 Date Received: 07/29/21 09:15 RL MDL 1,4-Dioxane 0.730 J 1.40 0.267 ug/L 08/03/21 21:23 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/03/21 21:23 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-1Client Sample ID: MW-3I Matrix: WaterDate Collected: 07/29/21 08:20 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 0.420 J 1.40 0.267 ug/L 08/12/21 19:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)113 70 -127 08/12/21 19:25 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 20 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151378-2Client Sample ID: MW-6 Matrix: WaterDate Collected: 07/29/21 09:45 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 0.384 J 1.40 0.267 ug/L 08/09/21 17:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/09/21 17:04 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-3Client Sample ID: MW-6I Matrix: WaterDate Collected: 07/29/21 09:08 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 1.02 J 1.40 0.267 ug/L 08/12/21 19:48 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)113 70 -127 08/12/21 19:48 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-5Client Sample ID: MW-11 Matrix: WaterDate Collected: 07/29/21 14:10 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/09/21 17:27 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/09/21 17:27 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-6Client Sample ID: MW-11I Matrix: WaterDate Collected: 07/29/21 13:30 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 0.804 J 1.40 0.267 ug/L 08/09/21 17:50 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/09/21 17:50 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-7Client Sample ID: MW-17I Matrix: WaterDate Collected: 07/29/21 09:15 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 1.21 J 1.40 0.267 ug/L 08/09/21 18:13 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/09/21 18:13 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-8Client Sample ID: MW-18I Matrix: WaterDate Collected: 07/29/21 10:25 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 8.09 1.40 0.267 ug/L 08/09/21 18:36 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)107 70 -127 08/09/21 18:36 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 21 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151378-10Client Sample ID: MW-20I Matrix: WaterDate Collected: 07/29/21 11:25 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 0.492 J 1.40 0.267 ug/L 08/09/21 18:59 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)108 70 -127 08/09/21 18:59 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-11Client Sample ID: MW-20I-a Matrix: WaterDate Collected: 07/29/21 11:30 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 0.609 J 1.40 0.267 ug/L 08/09/21 19:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)107 70 -127 08/09/21 19:22 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-13Client Sample ID: MW-8-c Matrix: WaterDate Collected: 07/29/21 11:05 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 0.289 J 1.40 0.267 ug/L 08/09/21 19:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/09/21 19:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-14Client Sample ID: MW-9 Matrix: WaterDate Collected: 07/30/21 09:05 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 1.73 1.40 0.267 ug/L 08/09/21 20:08 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)108 70 -127 08/09/21 20:08 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-15Client Sample ID: MW-9-a Matrix: WaterDate Collected: 07/30/21 09:05 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 1.38 J 1.40 0.267 ug/L 08/09/21 20:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)108 70 -127 08/09/21 20:32 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-16Client Sample ID: MW-9I Matrix: WaterDate Collected: 07/30/21 09:10 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 7.82 B 1.40 0.267 ug/L 08/11/21 18:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)109 70 -127 08/11/21 18:19 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 22 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151378-18Client Sample ID: MW-10I Matrix: WaterDate Collected: 07/30/21 09:50 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 5.80 1.40 0.267 ug/L 08/07/21 00:36 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)108 70 -127 08/07/21 00:36 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-19Client Sample ID: MW-7 Matrix: WaterDate Collected: 07/30/21 10:40 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 0.499 J 1.40 0.267 ug/L 08/12/21 20:11 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)115 70 -127 08/12/21 20:11 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151378-20Client Sample ID: MW-7I Matrix: WaterDate Collected: 07/30/21 10:55 Date Received: 07/31/21 09:35 RL MDL 1,4-Dioxane 0.439 J 1.40 0.267 ug/L 08/12/21 20:34 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)113 70 -127 08/12/21 20:34 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151937-1Client Sample ID: MW-8 Matrix: WaterDate Collected: 08/12/21 11:20 Date Received: 08/17/21 09:30 RL MDL 1,4-Dioxane 21.0 5.60 1.07 ug/L 08/23/21 17:29 4 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)99 70 -127 08/23/21 17:29 4 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151937-2Client Sample ID: MW-8-c Matrix: WaterDate Collected: 08/12/21 11:20 Date Received: 08/17/21 09:30 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/23/21 17:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)99 70 -127 08/23/21 17:51 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 280-151937-3Client Sample ID: MW-10 Matrix: WaterDate Collected: 08/12/21 10:05 Date Received: 08/17/21 09:30 RL MDL 1,4-Dioxane 2.11 1.40 0.267 ug/L 08/23/21 18:13 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)100 70 -127 08/23/21 18:13 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Eurofins Denver Page 23 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151937-4Client Sample ID: MW-19I Matrix: WaterDate Collected: 08/12/21 09:05 Date Received: 08/17/21 09:30 RL MDL 1,4-Dioxane 35.8 2.80 0.534 ug/L 08/23/21 18:35 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1,2-Dichloroethane-d4 (Surr)100 70 -127 08/23/21 18:35 2 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151322-1Client Sample ID: B-1 Matrix: WaterDate Collected: 07/27/21 11:40 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 16:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 16:37 1BenzeneND 1.00 ug/L 08/02/21 16:37 1BromoformND 2.00 ug/L 08/02/21 16:37 1BromomethaneND 6.00 ug/L 08/02/21 16:37 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 16:37 1Carbon disulfide ND 1.00 ug/L 08/02/21 16:37 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 16:37 1ChlorobenzeneND 1.00 ug/L 08/02/21 16:37 1ChlorobromomethaneND 1.00 ug/L 08/02/21 16:37 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 16:37 1ChloroethaneND 1.00 ug/L 08/02/21 16:37 1ChloroformND 2.00 ug/L 08/02/21 16:37 1ChloromethaneND 1.00 ug/L 08/02/21 16:37 1cis-1,2-Dichloroethene 1.87 1.00 ug/L 08/02/21 16:37 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 16:37 1CyclohexaneND 5.00 ug/L 08/02/21 16:37 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 16:37 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 16:37 11,2-Dichlorobenzene 1.00 1.00 ug/L 08/02/21 16:37 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 16:37 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 16:37 1DichlorobromomethaneND 2.00 ug/L 08/02/21 16:37 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 16:37 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 16:37 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 16:37 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 16:37 11,2-Dichloropropane ND 200 ug/L 08/02/21 16:37 11,4-Dioxane ND 1.00 ug/L 08/02/21 16:37 1EthylbenzeneND 5.00 ug/L 08/02/21 16:37 12-Hexanone ND 1.00 ug/L 08/02/21 16:37 1IsopropylbenzeneND 5.00 ug/L 08/02/21 16:37 1Methyl acetate ND 1.00 ug/L 08/02/21 16:37 1MethylcyclohexaneND 2.00 ug/L 08/02/21 16:37 1Methylene Chloride ND 5.00 ug/L 08/02/21 16:37 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 16:37 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 16:37 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 16:37 1o-Xylene ND 1.00 ug/L 08/02/21 16:37 1StyreneND Eurofins Denver Page 24 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-1Client Sample ID: B-1 Matrix: WaterDate Collected: 07/27/21 11:40 Date Received: 07/29/21 09:15 RL MDL 1,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 16:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 16:37 1TetrachloroetheneND 1.00 ug/L 08/02/21 16:37 1TolueneND 1.00 ug/L 08/02/21 16:37 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 16:37 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 16:37 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 16:37 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 16:37 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 16:37 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 16:37 1TrichloroetheneND 2.00 ug/L 08/02/21 16:37 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 16:37 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 16:37 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)105 78 -120 08/02/21 16:37 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)94 08/02/21 16:37 177-120 1,2-Dichloroethane-d4 (Surr)103 08/02/21 16:37 170-127 Toluene-d8 (Surr)104 08/02/21 16:37 180-125 Lab Sample ID: 280-151322-2Client Sample ID: B-3 Matrix: WaterDate Collected: 07/27/21 10:15 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 09:23 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 09:23 1BenzeneND 1.00 ug/L 08/02/21 09:23 1BromoformND 2.00 ug/L 08/02/21 09:23 1BromomethaneND 6.00 ug/L 08/02/21 09:23 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 09:23 1Carbon disulfide ND 1.00 ug/L 08/02/21 09:23 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 09:23 1ChlorobenzeneND 1.00 ug/L 08/02/21 09:23 1ChlorobromomethaneND 1.00 ug/L 08/02/21 09:23 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 09:23 1ChloroethaneND 1.00 ug/L 08/02/21 09:23 1ChloroformND 2.00 ug/L 08/02/21 09:23 1ChloromethaneND 1.00 ug/L 08/02/21 09:23 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/02/21 09:23 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 09:23 1CyclohexaneND 5.00 ug/L 08/02/21 09:23 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 09:23 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 09:23 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 09:23 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 09:23 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 09:23 1DichlorobromomethaneND 2.00 ug/L 08/02/21 09:23 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 09:23 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 09:23 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 09:23 11,1-Dichloroethene ND Eurofins Denver Page 25 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-2Client Sample ID: B-3 Matrix: WaterDate Collected: 07/27/21 10:15 Date Received: 07/29/21 09:15 RL MDL 1,2-Dichloropropane ND 1.00 ug/L 08/02/21 09:23 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 200 ug/L 08/02/21 09:23 11,4-Dioxane ND 1.00 ug/L 08/02/21 09:23 1EthylbenzeneND 5.00 ug/L 08/02/21 09:23 12-Hexanone ND 1.00 ug/L 08/02/21 09:23 1IsopropylbenzeneND 5.00 ug/L 08/02/21 09:23 1Methyl acetate ND 1.00 ug/L 08/02/21 09:23 1MethylcyclohexaneND 2.00 ug/L 08/02/21 09:23 1Methylene Chloride ND 5.00 ug/L 08/02/21 09:23 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 09:23 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 09:23 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 09:23 1o-Xylene ND 1.00 ug/L 08/02/21 09:23 1StyreneND 1.00 ug/L 08/02/21 09:23 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 09:23 1TetrachloroetheneND 1.00 ug/L 08/02/21 09:23 1TolueneND 1.00 ug/L 08/02/21 09:23 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 09:23 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 09:23 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 09:23 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 09:23 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 09:23 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 09:23 1TrichloroetheneND 2.00 ug/L 08/02/21 09:23 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 09:23 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 09:23 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 09:23 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)95 08/02/21 09:23 177-120 1,2-Dichloroethane-d4 (Surr)99 08/02/21 09:23 170-127 Toluene-d8 (Surr)103 08/02/21 09:23 180-125 Lab Sample ID: 280-151322-3Client Sample ID: MW-2 Matrix: WaterDate Collected: 07/28/21 09:25 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 09:46 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 09:46 1BenzeneND 1.00 ug/L 08/02/21 09:46 1BromoformND 2.00 ug/L 08/02/21 09:46 1BromomethaneND 6.00 ug/L 08/02/21 09:46 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 09:46 1Carbon disulfide ND 1.00 ug/L 08/02/21 09:46 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 09:46 1ChlorobenzeneND 1.00 ug/L 08/02/21 09:46 1ChlorobromomethaneND 1.00 ug/L 08/02/21 09:46 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 09:46 1ChloroethaneND 1.00 ug/L 08/02/21 09:46 1ChloroformND 2.00 ug/L 08/02/21 09:46 1ChloromethaneND Eurofins Denver Page 26 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-3Client Sample ID: MW-2 Matrix: WaterDate Collected: 07/28/21 09:25 Date Received: 07/29/21 09:15 RL MDL cis-1,2-Dichloroethene ND 1.00 ug/L 08/02/21 09:46 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 09:46 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 09:46 1CyclohexaneND 5.00 ug/L 08/02/21 09:46 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 09:46 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 09:46 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 09:46 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 09:46 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 09:46 1DichlorobromomethaneND 2.00 ug/L 08/02/21 09:46 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 09:46 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 09:46 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 09:46 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 09:46 11,2-Dichloropropane ND 200 ug/L 08/02/21 09:46 11,4-Dioxane ND 1.00 ug/L 08/02/21 09:46 1EthylbenzeneND 5.00 ug/L 08/02/21 09:46 12-Hexanone ND 1.00 ug/L 08/02/21 09:46 1IsopropylbenzeneND 5.00 ug/L 08/02/21 09:46 1Methyl acetate ND 1.00 ug/L 08/02/21 09:46 1MethylcyclohexaneND 2.00 ug/L 08/02/21 09:46 1Methylene Chloride ND 5.00 ug/L 08/02/21 09:46 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 09:46 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 09:46 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 09:46 1o-Xylene ND 1.00 ug/L 08/02/21 09:46 1StyreneND 1.00 ug/L 08/02/21 09:46 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 09:46 1TetrachloroetheneND 1.00 ug/L 08/02/21 09:46 1TolueneND 1.00 ug/L 08/02/21 09:46 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 09:46 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 09:46 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 09:46 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 09:46 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 09:46 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 09:46 1TrichloroetheneND 2.00 ug/L 08/02/21 09:46 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 09:46 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 09:46 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)105 78 -120 08/02/21 09:46 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)94 08/02/21 09:46 177-120 1,2-Dichloroethane-d4 (Surr)100 08/02/21 09:46 170-127 Toluene-d8 (Surr)103 08/02/21 09:46 180-125 Eurofins Denver Page 27 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151322-4Client Sample ID: MW-2A Matrix: WaterDate Collected: 07/27/21 14:30 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 10:09 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 10:09 1BenzeneND 1.00 ug/L 08/02/21 10:09 1BromoformND 2.00 ug/L 08/02/21 10:09 1BromomethaneND 6.00 ug/L 08/02/21 10:09 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 10:09 1Carbon disulfide ND 1.00 ug/L 08/02/21 10:09 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 10:09 1ChlorobenzeneND 1.00 ug/L 08/02/21 10:09 1ChlorobromomethaneND 1.00 ug/L 08/02/21 10:09 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 10:09 1ChloroethaneND 1.00 ug/L 08/02/21 10:09 1ChloroformND 2.00 ug/L 08/02/21 10:09 1ChloromethaneND 1.00 ug/L 08/02/21 10:09 1cis-1,2-Dichloroethene 1.25 1.00 ug/L 08/02/21 10:09 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 10:09 1CyclohexaneND 5.00 ug/L 08/02/21 10:09 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 10:09 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 10:09 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 10:09 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 10:09 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 10:09 1DichlorobromomethaneND 2.00 ug/L 08/02/21 10:09 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 10:09 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 10:09 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 10:09 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 10:09 11,2-Dichloropropane ND 200 ug/L 08/02/21 10:09 11,4-Dioxane ND 1.00 ug/L 08/02/21 10:09 1EthylbenzeneND 5.00 ug/L 08/02/21 10:09 12-Hexanone ND 1.00 ug/L 08/02/21 10:09 1IsopropylbenzeneND 5.00 ug/L 08/02/21 10:09 1Methyl acetate ND 1.00 ug/L 08/02/21 10:09 1MethylcyclohexaneND 2.00 ug/L 08/02/21 10:09 1Methylene Chloride ND 5.00 ug/L 08/02/21 10:09 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 10:09 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 10:09 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 10:09 1o-Xylene ND 1.00 ug/L 08/02/21 10:09 1StyreneND 1.00 ug/L 08/02/21 10:09 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 10:09 1TetrachloroetheneND 1.00 ug/L 08/02/21 10:09 1TolueneND 1.00 ug/L 08/02/21 10:09 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 10:09 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 10:09 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 10:09 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 10:09 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 10:09 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 10:09 1TrichloroetheneND Eurofins Denver Page 28 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-4Client Sample ID: MW-2A Matrix: WaterDate Collected: 07/27/21 14:30 Date Received: 07/29/21 09:15 RL MDL Trichlorofluoromethane ND 2.00 ug/L 08/02/21 10:09 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.00 ug/L 08/02/21 10:09 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 10:09 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)105 78 -120 08/02/21 10:09 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)95 08/02/21 10:09 177-120 1,2-Dichloroethane-d4 (Surr)102 08/02/21 10:09 170-127 Toluene-d8 (Surr)102 08/02/21 10:09 180-125 Lab Sample ID: 280-151322-5Client Sample ID: MW-2I Matrix: WaterDate Collected: 07/27/21 13:30 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 10:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 10:31 1BenzeneND 1.00 ug/L 08/02/21 10:31 1BromoformND 2.00 ug/L 08/02/21 10:31 1BromomethaneND 6.00 ug/L 08/02/21 10:31 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 10:31 1Carbon disulfide ND 1.00 ug/L 08/02/21 10:31 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 10:31 1ChlorobenzeneND 1.00 ug/L 08/02/21 10:31 1ChlorobromomethaneND 1.00 ug/L 08/02/21 10:31 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 10:31 1ChloroethaneND 1.00 ug/L 08/02/21 10:31 1ChloroformND 2.00 ug/L 08/02/21 10:31 1ChloromethaneND 1.00 ug/L 08/02/21 10:31 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/02/21 10:31 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 10:31 1CyclohexaneND 5.00 ug/L 08/02/21 10:31 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 10:31 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 10:31 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 10:31 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 10:31 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 10:31 1DichlorobromomethaneND 2.00 ug/L 08/02/21 10:31 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 10:31 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 10:31 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 10:31 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 10:31 11,2-Dichloropropane ND 200 ug/L 08/02/21 10:31 11,4-Dioxane ND 1.00 ug/L 08/02/21 10:31 1EthylbenzeneND 5.00 ug/L 08/02/21 10:31 12-Hexanone ND 1.00 ug/L 08/02/21 10:31 1IsopropylbenzeneND 5.00 ug/L 08/02/21 10:31 1Methyl acetate ND 1.00 ug/L 08/02/21 10:31 1MethylcyclohexaneND 2.00 ug/L 08/02/21 10:31 1Methylene Chloride ND 5.00 ug/L 08/02/21 10:31 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 10:31 1Methyl tert-butyl ether ND Eurofins Denver Page 29 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-5Client Sample ID: MW-2I Matrix: WaterDate Collected: 07/27/21 13:30 Date Received: 07/29/21 09:15 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 08/02/21 10:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 10:31 1o-Xylene ND 1.00 ug/L 08/02/21 10:31 1StyreneND 1.00 ug/L 08/02/21 10:31 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 10:31 1TetrachloroetheneND 1.00 ug/L 08/02/21 10:31 1TolueneND 1.00 ug/L 08/02/21 10:31 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 10:31 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 10:31 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 10:31 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 10:31 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 10:31 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 10:31 1TrichloroetheneND 2.00 ug/L 08/02/21 10:31 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 10:31 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 10:31 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 10:31 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)94 08/02/21 10:31 177-120 1,2-Dichloroethane-d4 (Surr)99 08/02/21 10:31 170-127 Toluene-d8 (Surr)103 08/02/21 10:31 180-125 Lab Sample ID: 280-151322-6Client Sample ID: MW-3 Matrix: WaterDate Collected: 07/27/21 14:55 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 10:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 10:54 1BenzeneND 1.00 ug/L 08/02/21 10:54 1BromoformND 2.00 ug/L 08/02/21 10:54 1BromomethaneND 6.00 ug/L 08/02/21 10:54 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 10:54 1Carbon disulfide ND 1.00 ug/L 08/02/21 10:54 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 10:54 1ChlorobenzeneND 1.00 ug/L 08/02/21 10:54 1ChlorobromomethaneND 1.00 ug/L 08/02/21 10:54 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 10:54 1ChloroethaneND 1.00 ug/L 08/02/21 10:54 1ChloroformND 2.00 ug/L 08/02/21 10:54 1ChloromethaneND 1.00 ug/L 08/02/21 10:54 1cis-1,2-Dichloroethene 1.09 1.00 ug/L 08/02/21 10:54 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 10:54 1CyclohexaneND 5.00 ug/L 08/02/21 10:54 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 10:54 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 10:54 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 10:54 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 10:54 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 10:54 1DichlorobromomethaneND 2.00 ug/L 08/02/21 10:54 1DichlorodifluoromethaneND Eurofins Denver Page 30 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-6Client Sample ID: MW-3 Matrix: WaterDate Collected: 07/27/21 14:55 Date Received: 07/29/21 09:15 RL MDL 1,1-Dichloroethane ND 1.00 ug/L 08/02/21 10:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 10:54 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 10:54 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 10:54 11,2-Dichloropropane ND 200 ug/L 08/02/21 10:54 11,4-Dioxane ND 1.00 ug/L 08/02/21 10:54 1EthylbenzeneND 5.00 ug/L 08/02/21 10:54 12-Hexanone ND 1.00 ug/L 08/02/21 10:54 1IsopropylbenzeneND 5.00 ug/L 08/02/21 10:54 1Methyl acetate ND 1.00 ug/L 08/02/21 10:54 1MethylcyclohexaneND 2.00 ug/L 08/02/21 10:54 1Methylene Chloride ND 5.00 ug/L 08/02/21 10:54 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 10:54 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 10:54 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 10:54 1o-Xylene ND 1.00 ug/L 08/02/21 10:54 1StyreneND 1.00 ug/L 08/02/21 10:54 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 10:54 1TetrachloroetheneND 1.00 ug/L 08/02/21 10:54 1TolueneND 1.00 ug/L 08/02/21 10:54 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 10:54 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 10:54 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 10:54 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 10:54 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 10:54 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 10:54 1TrichloroetheneND 2.00 ug/L 08/02/21 10:54 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 10:54 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 10:54 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 10:54 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)95 08/02/21 10:54 177-120 1,2-Dichloroethane-d4 (Surr)102 08/02/21 10:54 170-127 Toluene-d8 (Surr)103 08/02/21 10:54 180-125 Lab Sample ID: 280-151322-7Client Sample ID: MW-4 Matrix: WaterDate Collected: 07/28/21 14:00 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 11:17 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 11:17 1BenzeneND 1.00 ug/L 08/02/21 11:17 1BromoformND 2.00 ug/L 08/02/21 11:17 1BromomethaneND 6.00 ug/L 08/02/21 11:17 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 11:17 1Carbon disulfide ND 1.00 ug/L 08/02/21 11:17 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 11:17 1ChlorobenzeneND 1.00 ug/L 08/02/21 11:17 1ChlorobromomethaneND 1.00 ug/L 08/02/21 11:17 1ChlorodibromomethaneND Eurofins Denver Page 31 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-7Client Sample ID: MW-4 Matrix: WaterDate Collected: 07/28/21 14:00 Date Received: 07/29/21 09:15 RL MDL Chloroethane ND 2.00 ug/L 08/02/21 11:17 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 11:17 1ChloroformND 2.00 ug/L 08/02/21 11:17 1ChloromethaneND 1.00 ug/L 08/02/21 11:17 1cis-1,2-Dichloroethene 53.3 1.00 ug/L 08/02/21 11:17 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 11:17 1CyclohexaneND 5.00 ug/L 08/02/21 11:17 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 11:17 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 11:17 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 11:17 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 11:17 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 11:17 1DichlorobromomethaneND 2.00 ug/L 08/02/21 11:17 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 11:17 11,1-Dichloroethane 8.74 1.00 ug/L 08/02/21 11:17 11,2-Dichloroethane 1.76 1.00 ug/L 08/02/21 11:17 11,1-Dichloroethene 2.89 1.00 ug/L 08/02/21 11:17 11,2-Dichloropropane ND 200 ug/L 08/02/21 11:17 11,4-Dioxane ND 1.00 ug/L 08/02/21 11:17 1EthylbenzeneND 5.00 ug/L 08/02/21 11:17 12-Hexanone ND 1.00 ug/L 08/02/21 11:17 1IsopropylbenzeneND 5.00 ug/L 08/02/21 11:17 1Methyl acetate ND 1.00 ug/L 08/02/21 11:17 1MethylcyclohexaneND 2.00 ug/L 08/02/21 11:17 1Methylene Chloride ND 5.00 ug/L 08/02/21 11:17 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 11:17 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 11:17 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 11:17 1o-Xylene ND 1.00 ug/L 08/02/21 11:17 1StyreneND 1.00 ug/L 08/02/21 11:17 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 11:17 1TetrachloroetheneND 1.00 ug/L 08/02/21 11:17 1TolueneND 1.00 ug/L 08/02/21 11:17 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 11:17 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 11:17 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 11:17 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 11:17 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 11:17 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 11:17 1TrichloroetheneND 2.00 ug/L 08/02/21 11:17 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 11:17 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 11:17 1Vinyl chloride 1.60 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 11:17 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)96 08/02/21 11:17 177-120 1,2-Dichloroethane-d4 (Surr)102 08/02/21 11:17 170-127 Toluene-d8 (Surr)102 08/02/21 11:17 180-125 Eurofins Denver Page 32 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151322-8Client Sample ID: MW-4I Matrix: WaterDate Collected: 07/28/21 15:00 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 11:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 11:40 1BenzeneND 1.00 ug/L 08/02/21 11:40 1BromoformND 2.00 ug/L 08/02/21 11:40 1BromomethaneND 6.00 ug/L 08/02/21 11:40 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 11:40 1Carbon disulfide ND 1.00 ug/L 08/02/21 11:40 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 11:40 1ChlorobenzeneND 1.00 ug/L 08/02/21 11:40 1ChlorobromomethaneND 1.00 ug/L 08/02/21 11:40 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 11:40 1Chloroethane2.12 1.00 ug/L 08/02/21 11:40 1ChloroformND 2.00 ug/L 08/02/21 11:40 1ChloromethaneND 1.00 ug/L 08/02/21 11:40 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/02/21 11:40 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 11:40 1CyclohexaneND 5.00 ug/L 08/02/21 11:40 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 11:40 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 11:40 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 11:40 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 11:40 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 11:40 1DichlorobromomethaneND 2.00 ug/L 08/02/21 11:40 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 11:40 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 11:40 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 11:40 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 11:40 11,2-Dichloropropane ND 200 ug/L 08/02/21 11:40 11,4-Dioxane ND 1.00 ug/L 08/02/21 11:40 1EthylbenzeneND 5.00 ug/L 08/02/21 11:40 12-Hexanone ND 1.00 ug/L 08/02/21 11:40 1IsopropylbenzeneND 5.00 ug/L 08/02/21 11:40 1Methyl acetate ND 1.00 ug/L 08/02/21 11:40 1MethylcyclohexaneND 2.00 ug/L 08/02/21 11:40 1Methylene Chloride ND 5.00 ug/L 08/02/21 11:40 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 11:40 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 11:40 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 11:40 1o-Xylene ND 1.00 ug/L 08/02/21 11:40 1StyreneND 1.00 ug/L 08/02/21 11:40 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 11:40 1TetrachloroetheneND 1.00 ug/L 08/02/21 11:40 1TolueneND 1.00 ug/L 08/02/21 11:40 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 11:40 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 11:40 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 11:40 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 11:40 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 11:40 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 11:40 1TrichloroetheneND Eurofins Denver Page 33 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-8Client Sample ID: MW-4I Matrix: WaterDate Collected: 07/28/21 15:00 Date Received: 07/29/21 09:15 RL MDL Trichlorofluoromethane ND 2.00 ug/L 08/02/21 11:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.00 ug/L 08/02/21 11:40 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 11:40 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 11:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)94 08/02/21 11:40 177-120 1,2-Dichloroethane-d4 (Surr)99 08/02/21 11:40 170-127 Toluene-d8 (Surr)104 08/02/21 11:40 180-125 Lab Sample ID: 280-151322-9Client Sample ID: MW-5 Matrix: WaterDate Collected: 07/28/21 14:15 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 12:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 12:03 1BenzeneND 1.00 ug/L 08/02/21 12:03 1BromoformND 2.00 ug/L 08/02/21 12:03 1BromomethaneND 6.00 ug/L 08/02/21 12:03 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 12:03 1Carbon disulfide ND 1.00 ug/L 08/02/21 12:03 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 12:03 1ChlorobenzeneND 1.00 ug/L 08/02/21 12:03 1ChlorobromomethaneND 1.00 ug/L 08/02/21 12:03 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 12:03 1ChloroethaneND 1.00 ug/L 08/02/21 12:03 1ChloroformND 2.00 ug/L 08/02/21 12:03 1ChloromethaneND 1.00 ug/L 08/02/21 12:03 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/02/21 12:03 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 12:03 1CyclohexaneND 5.00 ug/L 08/02/21 12:03 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 12:03 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 12:03 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 12:03 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 12:03 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 12:03 1DichlorobromomethaneND 2.00 ug/L 08/02/21 12:03 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 12:03 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 12:03 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 12:03 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 12:03 11,2-Dichloropropane ND 200 ug/L 08/02/21 12:03 11,4-Dioxane ND 1.00 ug/L 08/02/21 12:03 1EthylbenzeneND 5.00 ug/L 08/02/21 12:03 12-Hexanone ND 1.00 ug/L 08/02/21 12:03 1IsopropylbenzeneND 5.00 ug/L 08/02/21 12:03 1Methyl acetate ND 1.00 ug/L 08/02/21 12:03 1MethylcyclohexaneND 2.00 ug/L 08/02/21 12:03 1Methylene Chloride ND 5.00 ug/L 08/02/21 12:03 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 12:03 1Methyl tert-butyl ether ND Eurofins Denver Page 34 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-9Client Sample ID: MW-5 Matrix: WaterDate Collected: 07/28/21 14:15 Date Received: 07/29/21 09:15 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 08/02/21 12:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 12:03 1o-Xylene ND 1.00 ug/L 08/02/21 12:03 1StyreneND 1.00 ug/L 08/02/21 12:03 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 12:03 1TetrachloroetheneND 1.00 ug/L 08/02/21 12:03 1TolueneND 1.00 ug/L 08/02/21 12:03 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 12:03 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 12:03 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 12:03 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 12:03 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 12:03 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 12:03 1TrichloroetheneND 2.00 ug/L 08/02/21 12:03 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 12:03 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 12:03 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)107 78 -120 08/02/21 12:03 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)94 08/02/21 12:03 177-120 1,2-Dichloroethane-d4 (Surr)100 08/02/21 12:03 170-127 Toluene-d8 (Surr)103 08/02/21 12:03 180-125 Lab Sample ID: 280-151322-10Client Sample ID: MW-5A Matrix: WaterDate Collected: 07/28/21 14:20 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 12:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 12:25 1BenzeneND 1.00 ug/L 08/02/21 12:25 1BromoformND 2.00 ug/L 08/02/21 12:25 1BromomethaneND 6.00 ug/L 08/02/21 12:25 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 12:25 1Carbon disulfide ND 1.00 ug/L 08/02/21 12:25 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 12:25 1ChlorobenzeneND 1.00 ug/L 08/02/21 12:25 1ChlorobromomethaneND 1.00 ug/L 08/02/21 12:25 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 12:25 1ChloroethaneND 1.00 ug/L 08/02/21 12:25 1ChloroformND 2.00 ug/L 08/02/21 12:25 1ChloromethaneND 1.00 ug/L 08/02/21 12:25 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/02/21 12:25 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 12:25 1CyclohexaneND 5.00 ug/L 08/02/21 12:25 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 12:25 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 12:25 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 12:25 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 12:25 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 12:25 1DichlorobromomethaneND 2.00 ug/L 08/02/21 12:25 1DichlorodifluoromethaneND Eurofins Denver Page 35 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-10Client Sample ID: MW-5A Matrix: WaterDate Collected: 07/28/21 14:20 Date Received: 07/29/21 09:15 RL MDL 1,1-Dichloroethane ND 1.00 ug/L 08/02/21 12:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 12:25 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 12:25 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 12:25 11,2-Dichloropropane ND 200 ug/L 08/02/21 12:25 11,4-Dioxane ND 1.00 ug/L 08/02/21 12:25 1EthylbenzeneND 5.00 ug/L 08/02/21 12:25 12-Hexanone ND 1.00 ug/L 08/02/21 12:25 1IsopropylbenzeneND 5.00 ug/L 08/02/21 12:25 1Methyl acetate ND 1.00 ug/L 08/02/21 12:25 1MethylcyclohexaneND 2.00 ug/L 08/02/21 12:25 1Methylene Chloride ND 5.00 ug/L 08/02/21 12:25 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 12:25 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 12:25 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 12:25 1o-Xylene ND 1.00 ug/L 08/02/21 12:25 1StyreneND 1.00 ug/L 08/02/21 12:25 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 12:25 1TetrachloroetheneND 1.00 ug/L 08/02/21 12:25 1TolueneND 1.00 ug/L 08/02/21 12:25 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 12:25 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 12:25 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 12:25 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 12:25 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 12:25 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 12:25 1TrichloroetheneND 2.00 ug/L 08/02/21 12:25 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 12:25 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 12:25 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 12:25 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)95 08/02/21 12:25 177-120 1,2-Dichloroethane-d4 (Surr)101 08/02/21 12:25 170-127 Toluene-d8 (Surr)104 08/02/21 12:25 180-125 Lab Sample ID: 280-151322-11Client Sample ID: MW-5I Matrix: WaterDate Collected: 07/28/21 13:40 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 12:48 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 12:48 1BenzeneND 1.00 ug/L 08/02/21 12:48 1BromoformND 2.00 ug/L 08/02/21 12:48 1BromomethaneND 6.00 ug/L 08/02/21 12:48 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 12:48 1Carbon disulfide ND 1.00 ug/L 08/02/21 12:48 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 12:48 1ChlorobenzeneND 1.00 ug/L 08/02/21 12:48 1ChlorobromomethaneND 1.00 ug/L 08/02/21 12:48 1ChlorodibromomethaneND Eurofins Denver Page 36 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-11Client Sample ID: MW-5I Matrix: WaterDate Collected: 07/28/21 13:40 Date Received: 07/29/21 09:15 RL MDL Chloroethane ND 2.00 ug/L 08/02/21 12:48 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 12:48 1ChloroformND 2.00 ug/L 08/02/21 12:48 1ChloromethaneND 1.00 ug/L 08/02/21 12:48 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/02/21 12:48 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 12:48 1CyclohexaneND 5.00 ug/L 08/02/21 12:48 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 12:48 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 12:48 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 12:48 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 12:48 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 12:48 1DichlorobromomethaneND 2.00 ug/L 08/02/21 12:48 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 12:48 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 12:48 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 12:48 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 12:48 11,2-Dichloropropane ND 200 ug/L 08/02/21 12:48 11,4-Dioxane ND 1.00 ug/L 08/02/21 12:48 1EthylbenzeneND 5.00 ug/L 08/02/21 12:48 12-Hexanone ND 1.00 ug/L 08/02/21 12:48 1IsopropylbenzeneND 5.00 ug/L 08/02/21 12:48 1Methyl acetate ND 1.00 ug/L 08/02/21 12:48 1MethylcyclohexaneND 2.00 ug/L 08/02/21 12:48 1Methylene Chloride ND 5.00 ug/L 08/02/21 12:48 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 12:48 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 12:48 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 12:48 1o-Xylene ND 1.00 ug/L 08/02/21 12:48 1StyreneND 1.00 ug/L 08/02/21 12:48 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 12:48 1TetrachloroetheneND 1.00 ug/L 08/02/21 12:48 1TolueneND 1.00 ug/L 08/02/21 12:48 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 12:48 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 12:48 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 12:48 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 12:48 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 12:48 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 12:48 1TrichloroetheneND 2.00 ug/L 08/02/21 12:48 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 12:48 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 12:48 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 12:48 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)94 08/02/21 12:48 177-120 1,2-Dichloroethane-d4 (Surr)101 08/02/21 12:48 170-127 Toluene-d8 (Surr)103 08/02/21 12:48 180-125 Eurofins Denver Page 37 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151322-12Client Sample ID: MW-12 Matrix: WaterDate Collected: 07/28/21 11:15 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 13:11 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 13:11 1BenzeneND 1.00 ug/L 08/02/21 13:11 1BromoformND 2.00 ug/L 08/02/21 13:11 1BromomethaneND 6.00 ug/L 08/02/21 13:11 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 13:11 1Carbon disulfide ND 1.00 ug/L 08/02/21 13:11 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 13:11 1ChlorobenzeneND 1.00 ug/L 08/02/21 13:11 1ChlorobromomethaneND 1.00 ug/L 08/02/21 13:11 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 13:11 1ChloroethaneND 1.00 ug/L 08/02/21 13:11 1ChloroformND 2.00 ug/L 08/02/21 13:11 1ChloromethaneND 1.00 ug/L 08/02/21 13:11 1cis-1,2-Dichloroethene 56.2 1.00 ug/L 08/02/21 13:11 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 13:11 1CyclohexaneND 5.00 ug/L 08/02/21 13:11 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 13:11 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 13:11 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 13:11 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 13:11 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 13:11 1DichlorobromomethaneND 2.00 ug/L 08/02/21 13:11 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 13:11 11,1-Dichloroethane 2.80 1.00 ug/L 08/02/21 13:11 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 13:11 11,1-Dichloroethene 1.09 1.00 ug/L 08/02/21 13:11 11,2-Dichloropropane ND 200 ug/L 08/02/21 13:11 11,4-Dioxane ND 1.00 ug/L 08/02/21 13:11 1EthylbenzeneND 5.00 ug/L 08/02/21 13:11 12-Hexanone ND 1.00 ug/L 08/02/21 13:11 1IsopropylbenzeneND 5.00 ug/L 08/02/21 13:11 1Methyl acetate ND 1.00 ug/L 08/02/21 13:11 1MethylcyclohexaneND 2.00 ug/L 08/02/21 13:11 1Methylene Chloride ND 5.00 ug/L 08/02/21 13:11 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 13:11 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 13:11 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 13:11 1o-Xylene ND 1.00 ug/L 08/02/21 13:11 1StyreneND 1.00 ug/L 08/02/21 13:11 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 13:11 1TetrachloroetheneND 1.00 ug/L 08/02/21 13:11 1TolueneND 1.00 ug/L 08/02/21 13:11 1trans-1,2-Dichloroethene 2.41 3.00 ug/L 08/02/21 13:11 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 13:11 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 13:11 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 13:11 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 13:11 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 13:11 1TrichloroetheneND Eurofins Denver Page 38 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-12Client Sample ID: MW-12 Matrix: WaterDate Collected: 07/28/21 11:15 Date Received: 07/29/21 09:15 RL MDL Trichlorofluoromethane ND 2.00 ug/L 08/02/21 13:11 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.00 ug/L 08/02/21 13:11 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 13:11 1Vinyl chloride 2.94 4-Bromofluorobenzene (Surr)105 78 -120 08/02/21 13:11 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)95 08/02/21 13:11 177-120 1,2-Dichloroethane-d4 (Surr)102 08/02/21 13:11 170-127 Toluene-d8 (Surr)103 08/02/21 13:11 180-125 Lab Sample ID: 280-151322-13Client Sample ID: MW-12I Matrix: WaterDate Collected: 07/28/21 10:35 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 13:34 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 13:34 1BenzeneND 1.00 ug/L 08/02/21 13:34 1BromoformND 2.00 ug/L 08/02/21 13:34 1BromomethaneND 6.00 ug/L 08/02/21 13:34 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 13:34 1Carbon disulfide ND 1.00 ug/L 08/02/21 13:34 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 13:34 1ChlorobenzeneND 1.00 ug/L 08/02/21 13:34 1ChlorobromomethaneND 1.00 ug/L 08/02/21 13:34 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 13:34 1ChloroethaneND 1.00 ug/L 08/02/21 13:34 1ChloroformND 2.00 ug/L 08/02/21 13:34 1ChloromethaneND 1.00 ug/L 08/02/21 13:34 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 13:34 1CyclohexaneND 5.00 ug/L 08/02/21 13:34 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 13:34 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 13:34 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 13:34 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 13:34 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 13:34 1DichlorobromomethaneND 2.00 ug/L 08/02/21 13:34 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 13:34 11,1-Dichloroethane 9.46 1.00 ug/L 08/02/21 13:34 11,2-Dichloroethane 59.7 1.00 ug/L 08/02/21 13:34 11,1-Dichloroethene 13.4 1.00 ug/L 08/02/21 13:34 11,2-Dichloropropane ND 200 ug/L 08/02/21 13:34 11,4-Dioxane ND 1.00 ug/L 08/02/21 13:34 1EthylbenzeneND 5.00 ug/L 08/02/21 13:34 12-Hexanone ND 1.00 ug/L 08/02/21 13:34 1IsopropylbenzeneND 5.00 ug/L 08/02/21 13:34 1Methyl acetate ND 1.00 ug/L 08/02/21 13:34 1MethylcyclohexaneND 2.00 ug/L 08/02/21 13:34 1Methylene Chloride ND 5.00 ug/L 08/02/21 13:34 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 13:34 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 13:34 1m-Xylene & p-Xylene ND Eurofins Denver Page 39 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-13Client Sample ID: MW-12I Matrix: WaterDate Collected: 07/28/21 10:35 Date Received: 07/29/21 09:15 RL MDL o-Xylene ND 1.00 ug/L 08/02/21 13:34 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 13:34 1StyreneND 1.00 ug/L 08/02/21 13:34 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 13:34 1TetrachloroetheneND 1.00 ug/L 08/02/21 13:34 1TolueneND 1.00 ug/L 08/02/21 13:34 1trans-1,2-Dichloroethene 5.79 3.00 ug/L 08/02/21 13:34 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 13:34 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 13:34 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 13:34 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 13:34 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 13:34 1Trichloroethene36.5 2.00 ug/L 08/02/21 13:34 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 13:34 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 13:34 1Vinyl chloride 13.8 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 13:34 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)96 08/02/21 13:34 177-120 1,2-Dichloroethane-d4 (Surr)102 08/02/21 13:34 170-127 Toluene-d8 (Surr)103 08/02/21 13:34 180-125 Lab Sample ID: 280-151322-14Client Sample ID: MW-13 Matrix: WaterDate Collected: 07/27/21 14:05 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 13:57 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 13:57 1BenzeneND 1.00 ug/L 08/02/21 13:57 1BromoformND 2.00 ug/L 08/02/21 13:57 1BromomethaneND 6.00 ug/L 08/02/21 13:57 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 13:57 1Carbon disulfide ND 1.00 ug/L 08/02/21 13:57 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 13:57 1ChlorobenzeneND 1.00 ug/L 08/02/21 13:57 1ChlorobromomethaneND 1.00 ug/L 08/02/21 13:57 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 13:57 1ChloroethaneND 1.00 ug/L 08/02/21 13:57 1ChloroformND 2.00 ug/L 08/02/21 13:57 1ChloromethaneND 1.00 ug/L 08/02/21 13:57 1cis-1,2-Dichloroethene 104 1.00 ug/L 08/02/21 13:57 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 13:57 1CyclohexaneND 5.00 ug/L 08/02/21 13:57 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 13:57 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 13:57 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 13:57 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 13:57 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 13:57 1DichlorobromomethaneND 2.00 ug/L 08/02/21 13:57 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 13:57 11,1-Dichloroethane 3.52 Eurofins Denver Page 40 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-14Client Sample ID: MW-13 Matrix: WaterDate Collected: 07/27/21 14:05 Date Received: 07/29/21 09:15 RL MDL 1,2-Dichloroethane ND 1.00 ug/L 08/02/21 13:57 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 13:57 11,1-Dichloroethene 1.58 1.00 ug/L 08/02/21 13:57 11,2-Dichloropropane ND 200 ug/L 08/02/21 13:57 11,4-Dioxane ND 1.00 ug/L 08/02/21 13:57 1EthylbenzeneND 5.00 ug/L 08/02/21 13:57 12-Hexanone ND 1.00 ug/L 08/02/21 13:57 1IsopropylbenzeneND 5.00 ug/L 08/02/21 13:57 1Methyl acetate ND 1.00 ug/L 08/02/21 13:57 1MethylcyclohexaneND 2.00 ug/L 08/02/21 13:57 1Methylene Chloride ND 5.00 ug/L 08/02/21 13:57 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 13:57 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 13:57 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 13:57 1o-Xylene ND 1.00 ug/L 08/02/21 13:57 1StyreneND 1.00 ug/L 08/02/21 13:57 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 13:57 1TetrachloroetheneND 1.00 ug/L 08/02/21 13:57 1TolueneND 1.00 ug/L 08/02/21 13:57 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 13:57 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 13:57 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 13:57 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 13:57 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 13:57 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 13:57 1TrichloroetheneND 2.00 ug/L 08/02/21 13:57 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 13:57 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 13:57 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 13:57 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)96 08/02/21 13:57 177-120 1,2-Dichloroethane-d4 (Surr)104 08/02/21 13:57 170-127 Toluene-d8 (Surr)103 08/02/21 13:57 180-125 Lab Sample ID: 280-151322-15Client Sample ID: MW-13I Matrix: WaterDate Collected: 07/27/21 13:25 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 14:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 14:20 1BenzeneND 1.00 ug/L 08/02/21 14:20 1BromoformND 2.00 ug/L 08/02/21 14:20 1BromomethaneND 6.00 ug/L 08/02/21 14:20 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 14:20 1Carbon disulfide ND 1.00 ug/L 08/02/21 14:20 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 14:20 1ChlorobenzeneND 1.00 ug/L 08/02/21 14:20 1ChlorobromomethaneND 1.00 ug/L 08/02/21 14:20 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 14:20 1ChloroethaneND Eurofins Denver Page 41 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-15Client Sample ID: MW-13I Matrix: WaterDate Collected: 07/27/21 13:25 Date Received: 07/29/21 09:15 RL MDL Chloroform ND 1.00 ug/L 08/02/21 14:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.00 ug/L 08/02/21 14:20 1ChloromethaneND 1.00 ug/L 08/02/21 14:20 1cis-1,2-Dichloroethene 174 1.00 ug/L 08/02/21 14:20 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 14:20 1CyclohexaneND 5.00 ug/L 08/02/21 14:20 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 14:20 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 14:20 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 14:20 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 14:20 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 14:20 1DichlorobromomethaneND 2.00 ug/L 08/02/21 14:20 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 14:20 11,1-Dichloroethane 13.5 1.00 ug/L 08/02/21 14:20 11,2-Dichloroethane 5.09 1.00 ug/L 08/02/21 14:20 11,1-Dichloroethene 9.21 1.00 ug/L 08/02/21 14:20 11,2-Dichloropropane ND 200 ug/L 08/02/21 14:20 11,4-Dioxane ND 1.00 ug/L 08/02/21 14:20 1EthylbenzeneND 5.00 ug/L 08/02/21 14:20 12-Hexanone ND 1.00 ug/L 08/02/21 14:20 1IsopropylbenzeneND 5.00 ug/L 08/02/21 14:20 1Methyl acetate ND 1.00 ug/L 08/02/21 14:20 1MethylcyclohexaneND 2.00 ug/L 08/02/21 14:20 1Methylene Chloride ND 5.00 ug/L 08/02/21 14:20 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 14:20 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 14:20 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 14:20 1o-Xylene ND 1.00 ug/L 08/02/21 14:20 1StyreneND 1.00 ug/L 08/02/21 14:20 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 14:20 1Tetrachloroethene62.4 1.00 ug/L 08/02/21 14:20 1TolueneND 1.00 ug/L 08/02/21 14:20 1trans-1,2-Dichloroethene 10.1 3.00 ug/L 08/02/21 14:20 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 14:20 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 14:20 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 14:20 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 14:20 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 14:20 1Trichloroethene116 2.00 ug/L 08/02/21 14:20 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 14:20 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 14:20 1Vinyl chloride 2.43 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 14:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)96 08/02/21 14:20 177-120 1,2-Dichloroethane-d4 (Surr)104 08/02/21 14:20 170-127 Toluene-d8 (Surr)103 08/02/21 14:20 180-125 Eurofins Denver Page 42 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151322-16Client Sample ID: MW-14 Matrix: WaterDate Collected: 07/27/21 11:25 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 14:43 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 14:43 1BenzeneND 1.00 ug/L 08/02/21 14:43 1BromoformND 2.00 ug/L 08/02/21 14:43 1BromomethaneND 6.00 ug/L 08/02/21 14:43 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 14:43 1Carbon disulfide ND 1.00 ug/L 08/02/21 14:43 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 14:43 1ChlorobenzeneND 1.00 ug/L 08/02/21 14:43 1ChlorobromomethaneND 1.00 ug/L 08/02/21 14:43 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 14:43 1ChloroethaneND 1.00 ug/L 08/02/21 14:43 1ChloroformND 2.00 ug/L 08/02/21 14:43 1ChloromethaneND 1.00 ug/L 08/02/21 14:43 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/02/21 14:43 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 14:43 1CyclohexaneND 5.00 ug/L 08/02/21 14:43 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 14:43 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 14:43 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 14:43 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 14:43 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 14:43 1DichlorobromomethaneND 2.00 ug/L 08/02/21 14:43 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 14:43 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 14:43 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 14:43 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 14:43 11,2-Dichloropropane ND 200 ug/L 08/02/21 14:43 11,4-Dioxane ND 1.00 ug/L 08/02/21 14:43 1EthylbenzeneND 5.00 ug/L 08/02/21 14:43 12-Hexanone ND 1.00 ug/L 08/02/21 14:43 1IsopropylbenzeneND 5.00 ug/L 08/02/21 14:43 1Methyl acetate ND 1.00 ug/L 08/02/21 14:43 1MethylcyclohexaneND 2.00 ug/L 08/02/21 14:43 1Methylene Chloride ND 5.00 ug/L 08/02/21 14:43 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 14:43 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 14:43 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 14:43 1o-Xylene ND 1.00 ug/L 08/02/21 14:43 1StyreneND 1.00 ug/L 08/02/21 14:43 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 14:43 1TetrachloroetheneND 1.00 ug/L 08/02/21 14:43 1TolueneND 1.00 ug/L 08/02/21 14:43 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 14:43 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 14:43 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 14:43 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 14:43 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 14:43 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 14:43 1TrichloroetheneND Eurofins Denver Page 43 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-16Client Sample ID: MW-14 Matrix: WaterDate Collected: 07/27/21 11:25 Date Received: 07/29/21 09:15 RL MDL Trichlorofluoromethane ND 2.00 ug/L 08/02/21 14:43 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.00 ug/L 08/02/21 14:43 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 14:43 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)105 78 -120 08/02/21 14:43 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)95 08/02/21 14:43 177-120 1,2-Dichloroethane-d4 (Surr)103 08/02/21 14:43 170-127 Toluene-d8 (Surr)103 08/02/21 14:43 180-125 Lab Sample ID: 280-151322-17Client Sample ID: MW-14I Matrix: WaterDate Collected: 07/27/21 10:25 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 15:05 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 15:05 1BenzeneND 1.00 ug/L 08/02/21 15:05 1BromoformND 2.00 ug/L 08/02/21 15:05 1BromomethaneND 6.00 ug/L 08/02/21 15:05 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 15:05 1Carbon disulfide ND 1.00 ug/L 08/02/21 15:05 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 15:05 1ChlorobenzeneND 1.00 ug/L 08/02/21 15:05 1ChlorobromomethaneND 1.00 ug/L 08/02/21 15:05 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 15:05 1ChloroethaneND 1.00 ug/L 08/02/21 15:05 1ChloroformND 2.00 ug/L 08/02/21 15:05 1ChloromethaneND 1.00 ug/L 08/02/21 15:05 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 15:05 1CyclohexaneND 5.00 ug/L 08/02/21 15:05 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 15:05 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 15:05 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 15:05 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 15:05 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 15:05 1DichlorobromomethaneND 2.00 ug/L 08/02/21 15:05 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 15:05 11,1-Dichloroethane 43.0 1.00 ug/L 08/02/21 15:05 11,2-Dichloroethane 8.04 1.00 ug/L 08/02/21 15:05 11,1-Dichloroethene 21.3 1.00 ug/L 08/02/21 15:05 11,2-Dichloropropane ND 200 ug/L 08/02/21 15:05 11,4-Dioxane ND 1.00 ug/L 08/02/21 15:05 1EthylbenzeneND 5.00 ug/L 08/02/21 15:05 12-Hexanone ND 1.00 ug/L 08/02/21 15:05 1IsopropylbenzeneND 5.00 ug/L 08/02/21 15:05 1Methyl acetate ND 1.00 ug/L 08/02/21 15:05 1MethylcyclohexaneND 2.00 ug/L 08/02/21 15:05 1Methylene Chloride ND 5.00 ug/L 08/02/21 15:05 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 15:05 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 15:05 1m-Xylene & p-Xylene ND Eurofins Denver Page 44 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-17Client Sample ID: MW-14I Matrix: WaterDate Collected: 07/27/21 10:25 Date Received: 07/29/21 09:15 RL MDL o-Xylene ND 1.00 ug/L 08/02/21 15:05 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 15:05 1StyreneND 1.00 ug/L 08/02/21 15:05 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 15:05 1Tetrachloroethene36.0 1.00 ug/L 08/02/21 15:05 1TolueneND 1.00 ug/L 08/02/21 15:05 1trans-1,2-Dichloroethene 3.61 3.00 ug/L 08/02/21 15:05 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 15:05 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 15:05 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 15:05 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 15:05 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 15:05 1Trichloroethene144 2.00 ug/L 08/02/21 15:05 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 15:05 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 15:05 1Vinyl chloride 17.6 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 15:05 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)95 08/02/21 15:05 177-120 1,2-Dichloroethane-d4 (Surr)102 08/02/21 15:05 170-127 Toluene-d8 (Surr)104 08/02/21 15:05 180-125 Lab Sample ID: 280-151322-18Client Sample ID: MW-14I-A Matrix: WaterDate Collected: 07/27/21 10:30 Date Received: 07/29/21 09:15 RL MDL Acetone ND 40.0 ug/L 08/02/21 15:29 4 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4.00 ug/L 08/02/21 15:29 4BenzeneND 4.00 ug/L 08/02/21 15:29 4BromoformND 8.00 ug/L 08/02/21 15:29 4BromomethaneND 24.0 ug/L 08/02/21 15:29 42-Butanone (MEK)ND 8.00 ug/L 08/02/21 15:29 4Carbon disulfide ND 4.00 ug/L 08/02/21 15:29 4Carbon tetrachloride ND 4.00 ug/L 08/02/21 15:29 4ChlorobenzeneND 4.00 ug/L 08/02/21 15:29 4ChlorobromomethaneND 4.00 ug/L 08/02/21 15:29 4ChlorodibromomethaneND 8.00 ug/L 08/02/21 15:29 4ChloroethaneND 4.00 ug/L 08/02/21 15:29 4ChloroformND 8.00 ug/L 08/02/21 15:29 4ChloromethaneND 4.00 ug/L 08/02/21 15:29 4cis-1,2-Dichloroethene 318 4.00 ug/L 08/02/21 15:29 4cis-1,3-Dichloropropene ND 8.00 ug/L 08/02/21 15:29 4CyclohexaneND 20.0 ug/L 08/02/21 15:29 41,2-Dibromo-3-Chloropropane ND 4.00 ug/L 08/02/21 15:29 41,2-Dibromoethane ND 4.00 ug/L 08/02/21 15:29 41,2-Dichlorobenzene ND 4.00 ug/L 08/02/21 15:29 41,3-Dichlorobenzene ND 4.00 ug/L 08/02/21 15:29 41,4-Dichlorobenzene ND 4.00 ug/L 08/02/21 15:29 4DichlorobromomethaneND 8.00 ug/L 08/02/21 15:29 4DichlorodifluoromethaneND 4.00 ug/L 08/02/21 15:29 41,1-Dichloroethane 39.8 Eurofins Denver Page 45 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-18Client Sample ID: MW-14I-A Matrix: WaterDate Collected: 07/27/21 10:30 Date Received: 07/29/21 09:15 RL MDL 1,2-Dichloroethane 7.82 4.00 ug/L 08/02/21 15:29 4 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4.00 ug/L 08/02/21 15:29 41,1-Dichloroethene 20.1 4.00 ug/L 08/02/21 15:29 41,2-Dichloropropane ND 800 ug/L 08/02/21 15:29 41,4-Dioxane ND 4.00 ug/L 08/02/21 15:29 4EthylbenzeneND 20.0 ug/L 08/02/21 15:29 42-Hexanone ND 4.00 ug/L 08/02/21 15:29 4IsopropylbenzeneND 20.0 ug/L 08/02/21 15:29 4Methyl acetate ND 4.00 ug/L 08/02/21 15:29 4MethylcyclohexaneND 8.00 ug/L 08/02/21 15:29 4Methylene Chloride ND 20.0 ug/L 08/02/21 15:29 44-Methyl-2-pentanone (MIBK)ND 20.0 ug/L 08/02/21 15:29 4Methyl tert-butyl ether ND 8.00 ug/L 08/02/21 15:29 4m-Xylene & p-Xylene ND 4.00 ug/L 08/02/21 15:29 4o-Xylene ND 4.00 ug/L 08/02/21 15:29 4StyreneND 4.00 ug/L 08/02/21 15:29 41,1,2,2-Tetrachloroethane ND 4.00 ug/L 08/02/21 15:29 4Tetrachloroethene40.0 4.00 ug/L 08/02/21 15:29 4TolueneND 4.00 ug/L 08/02/21 15:29 4trans-1,2-Dichloroethene ND 12.0 ug/L 08/02/21 15:29 4trans-1,3-Dichloropropene ND 4.00 ug/L 08/02/21 15:29 41,2,3-Trichlorobenzene ND 4.00 ug/L 08/02/21 15:29 41,2,4-Trichlorobenzene ND 4.00 ug/L 08/02/21 15:29 41,1,1-Trichloroethane ND 4.00 ug/L 08/02/21 15:29 41,1,2-Trichloroethane ND 4.00 ug/L 08/02/21 15:29 4Trichloroethene139 8.00 ug/L 08/02/21 15:29 4TrichlorofluoromethaneND 12.0 ug/L 08/02/21 15:29 41,1,2-Trichlorotrifluoroethane ND 4.00 ug/L 08/02/21 15:29 4Vinyl chloride 15.3 4-Bromofluorobenzene (Surr)107 78 -120 08/02/21 15:29 4 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)95 08/02/21 15:29 477-120 1,2-Dichloroethane-d4 (Surr)102 08/02/21 15:29 470-127 Toluene-d8 (Surr)103 08/02/21 15:29 480-125 Lab Sample ID: 280-151322-19Client Sample ID: MW-15 Matrix: WaterDate Collected: 07/28/21 07:30 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 15:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 15:51 1BenzeneND 1.00 ug/L 08/02/21 15:51 1BromoformND 2.00 ug/L 08/02/21 15:51 1BromomethaneND 6.00 ug/L 08/02/21 15:51 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 15:51 1Carbon disulfide ND 1.00 ug/L 08/02/21 15:51 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 15:51 1ChlorobenzeneND 1.00 ug/L 08/02/21 15:51 1ChlorobromomethaneND 1.00 ug/L 08/02/21 15:51 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 15:51 1ChloroethaneND Eurofins Denver Page 46 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-19Client Sample ID: MW-15 Matrix: WaterDate Collected: 07/28/21 07:30 Date Received: 07/29/21 09:15 RL MDL Chloroform ND 1.00 ug/L 08/02/21 15:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.00 ug/L 08/02/21 15:51 1ChloromethaneND 1.00 ug/L 08/02/21 15:51 1cis-1,2-Dichloroethene 15.4 1.00 ug/L 08/02/21 15:51 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 15:51 1CyclohexaneND 5.00 ug/L 08/02/21 15:51 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 15:51 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 15:51 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 15:51 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 15:51 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 15:51 1DichlorobromomethaneND 2.00 ug/L 08/02/21 15:51 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 15:51 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 15:51 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 15:51 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 15:51 11,2-Dichloropropane ND 200 ug/L 08/02/21 15:51 11,4-Dioxane ND 1.00 ug/L 08/02/21 15:51 1EthylbenzeneND 5.00 ug/L 08/02/21 15:51 12-Hexanone ND 1.00 ug/L 08/02/21 15:51 1IsopropylbenzeneND 5.00 ug/L 08/02/21 15:51 1Methyl acetate ND 1.00 ug/L 08/02/21 15:51 1MethylcyclohexaneND 2.00 ug/L 08/02/21 15:51 1Methylene Chloride ND 5.00 ug/L 08/02/21 15:51 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 15:51 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 15:51 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 15:51 1o-Xylene ND 1.00 ug/L 08/02/21 15:51 1StyreneND 1.00 ug/L 08/02/21 15:51 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 15:51 1TetrachloroetheneND 1.00 ug/L 08/02/21 15:51 1TolueneND 1.00 ug/L 08/02/21 15:51 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 15:51 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 15:51 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 15:51 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 15:51 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 15:51 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 15:51 1TrichloroetheneND 2.00 ug/L 08/02/21 15:51 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 15:51 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 15:51 1Vinyl chloride 2.34 4-Bromofluorobenzene (Surr)105 78 -120 08/02/21 15:51 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)95 08/02/21 15:51 177-120 1,2-Dichloroethane-d4 (Surr)104 08/02/21 15:51 170-127 Toluene-d8 (Surr)102 08/02/21 15:51 180-125 Eurofins Denver Page 47 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151322-20Client Sample ID: MW-15I Matrix: WaterDate Collected: 07/28/21 08:55 Date Received: 07/29/21 09:15 RL MDL Acetone ND 20.0 ug/L 08/02/21 16:15 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.00 ug/L 08/02/21 16:15 2BenzeneND 2.00 ug/L 08/02/21 16:15 2BromoformND 4.00 ug/L 08/02/21 16:15 2BromomethaneND 12.0 ug/L 08/02/21 16:15 22-Butanone (MEK)ND 4.00 ug/L 08/02/21 16:15 2Carbon disulfide ND 2.00 ug/L 08/02/21 16:15 2Carbon tetrachloride ND 2.00 ug/L 08/02/21 16:15 2ChlorobenzeneND 2.00 ug/L 08/02/21 16:15 2ChlorobromomethaneND 2.00 ug/L 08/02/21 16:15 2ChlorodibromomethaneND 4.00 ug/L 08/02/21 16:15 2ChloroethaneND 2.00 ug/L 08/02/21 16:15 2ChloroformND 4.00 ug/L 08/02/21 16:15 2ChloromethaneND 2.00 ug/L 08/02/21 16:15 2cis-1,3-Dichloropropene ND 4.00 ug/L 08/02/21 16:15 2CyclohexaneND 10.0 ug/L 08/02/21 16:15 21,2-Dibromo-3-Chloropropane ND 2.00 ug/L 08/02/21 16:15 21,2-Dibromoethane ND 2.00 ug/L 08/02/21 16:15 21,2-Dichlorobenzene ND 2.00 ug/L 08/02/21 16:15 21,3-Dichlorobenzene ND 2.00 ug/L 08/02/21 16:15 21,4-Dichlorobenzene ND 2.00 ug/L 08/02/21 16:15 2DichlorobromomethaneND 4.00 ug/L 08/02/21 16:15 2DichlorodifluoromethaneND 2.00 ug/L 08/02/21 16:15 21,1-Dichloroethane 25.8 2.00 ug/L 08/02/21 16:15 21,2-Dichloroethane 3.39 2.00 ug/L 08/02/21 16:15 21,1-Dichloroethene 26.8 2.00 ug/L 08/02/21 16:15 21,2-Dichloropropane ND 400 ug/L 08/02/21 16:15 21,4-Dioxane ND 2.00 ug/L 08/02/21 16:15 2EthylbenzeneND 10.0 ug/L 08/02/21 16:15 22-Hexanone ND 2.00 ug/L 08/02/21 16:15 2IsopropylbenzeneND 10.0 ug/L 08/02/21 16:15 2Methyl acetate ND 2.00 ug/L 08/02/21 16:15 2MethylcyclohexaneND 4.00 ug/L 08/02/21 16:15 2Methylene Chloride ND 10.0 ug/L 08/02/21 16:15 24-Methyl-2-pentanone (MIBK)ND 10.0 ug/L 08/02/21 16:15 2Methyl tert-butyl ether ND 4.00 ug/L 08/02/21 16:15 2m-Xylene & p-Xylene ND 2.00 ug/L 08/02/21 16:15 2o-Xylene ND 2.00 ug/L 08/02/21 16:15 2StyreneND 2.00 ug/L 08/02/21 16:15 21,1,2,2-Tetrachloroethane ND 2.00 ug/L 08/02/21 16:15 2Tetrachloroethene21.6 2.00 ug/L 08/02/21 16:15 2TolueneND 2.00 ug/L 08/02/21 16:15 2trans-1,2-Dichloroethene 6.93 6.00 ug/L 08/02/21 16:15 2trans-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 16:15 21,2,3-Trichlorobenzene ND 2.00 ug/L 08/02/21 16:15 21,2,4-Trichlorobenzene ND 2.00 ug/L 08/02/21 16:15 21,1,1-Trichloroethane ND 2.00 ug/L 08/02/21 16:15 21,1,2-Trichloroethane ND 2.00 ug/L 08/02/21 16:15 2Trichloroethene192 4.00 ug/L 08/02/21 16:15 2TrichlorofluoromethaneND Eurofins Denver Page 48 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-20Client Sample ID: MW-15I Matrix: WaterDate Collected: 07/28/21 08:55 Date Received: 07/29/21 09:15 RL MDL 1,1,2-Trichlorotrifluoroethane ND 6.00 ug/L 08/02/21 16:15 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.00 ug/L 08/02/21 16:15 2Vinyl chloride 15.5 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 16:15 2 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)96 08/02/21 16:15 277-120 1,2-Dichloroethane-d4 (Surr)102 08/02/21 16:15 270-127 Toluene-d8 (Surr)103 08/02/21 16:15 280-125 Lab Sample ID: 280-151322-21Client Sample ID: MW-16 Matrix: WaterDate Collected: 07/28/21 11:25 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 15:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 15:25 1BenzeneND 1.00 ug/L 08/02/21 15:25 1BromoformND 2.00 ug/L 08/02/21 15:25 1BromomethaneND 6.00 ug/L 08/02/21 15:25 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 15:25 1Carbon disulfide ND 1.00 ug/L 08/02/21 15:25 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 15:25 1ChlorobenzeneND 1.00 ug/L 08/02/21 15:25 1ChlorobromomethaneND 1.00 ug/L 08/02/21 15:25 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 15:25 1ChloroethaneND 1.00 ug/L 08/02/21 15:25 1ChloroformND 2.00 ug/L 08/02/21 15:25 1ChloromethaneND 1.00 ug/L 08/02/21 15:25 1cis-1,2-Dichloroethene 57.9 1.00 ug/L 08/02/21 15:25 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 15:25 1CyclohexaneND 5.00 ug/L 08/02/21 15:25 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 15:25 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 15:25 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 15:25 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 15:25 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 15:25 1DichlorobromomethaneND 2.00 ug/L 08/02/21 15:25 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 15:25 11,1-Dichloroethane 2.42 1.00 ug/L 08/02/21 15:25 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 15:25 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 15:25 11,2-Dichloropropane ND 200 ug/L 08/02/21 15:25 11,4-Dioxane ND 1.00 ug/L 08/02/21 15:25 1EthylbenzeneND 5.00 ug/L 08/02/21 15:25 12-Hexanone ND 1.00 ug/L 08/02/21 15:25 1IsopropylbenzeneND 5.00 ug/L 08/02/21 15:25 1Methyl acetate ND 1.00 ug/L 08/02/21 15:25 1MethylcyclohexaneND 2.00 ug/L 08/02/21 15:25 1Methylene Chloride ND 5.00 ug/L 08/02/21 15:25 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 15:25 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 15:25 1m-Xylene & p-Xylene ND Eurofins Denver Page 49 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-21Client Sample ID: MW-16 Matrix: WaterDate Collected: 07/28/21 11:25 Date Received: 07/29/21 09:15 RL MDL o-Xylene ND 1.00 ug/L 08/02/21 15:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 15:25 1StyreneND 1.00 ug/L 08/02/21 15:25 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 15:25 1TetrachloroetheneND 1.00 ug/L 08/02/21 15:25 1TolueneND 1.00 ug/L 08/02/21 15:25 1trans-1,2-Dichloroethene 2.85 3.00 ug/L 08/02/21 15:25 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 15:25 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 15:25 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 15:25 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 15:25 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 15:25 1TrichloroetheneND 2.00 ug/L 08/02/21 15:25 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 15:25 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 15:25 1Vinyl chloride 10.7 4-Bromofluorobenzene (Surr)101 78 -120 08/02/21 15:25 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)99 08/02/21 15:25 177-120 1,2-Dichloroethane-d4 (Surr)95 08/02/21 15:25 170-127 Toluene-d8 (Surr)95 08/02/21 15:25 180-125 Lab Sample ID: 280-151322-22Client Sample ID: MW-2-C Matrix: WaterDate Collected: 07/28/21 09:25 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 15:47 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 15:47 1BenzeneND 1.00 ug/L 08/02/21 15:47 1BromoformND 2.00 ug/L 08/02/21 15:47 1BromomethaneND 6.00 ug/L 08/02/21 15:47 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 15:47 1Carbon disulfide ND 1.00 ug/L 08/02/21 15:47 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 15:47 1ChlorobenzeneND 1.00 ug/L 08/02/21 15:47 1ChlorobromomethaneND 1.00 ug/L 08/02/21 15:47 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 15:47 1ChloroethaneND 1.00 ug/L 08/02/21 15:47 1ChloroformND 2.00 ug/L 08/02/21 15:47 1ChloromethaneND 1.00 ug/L 08/02/21 15:47 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/02/21 15:47 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 15:47 1CyclohexaneND 5.00 ug/L 08/02/21 15:47 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 15:47 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 15:47 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 15:47 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 15:47 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 15:47 1DichlorobromomethaneND 2.00 ug/L 08/02/21 15:47 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 15:47 11,1-Dichloroethane ND Eurofins Denver Page 50 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-22Client Sample ID: MW-2-C Matrix: WaterDate Collected: 07/28/21 09:25 Date Received: 07/29/21 09:15 RL MDL 1,2-Dichloroethane ND 1.00 ug/L 08/02/21 15:47 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 15:47 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 15:47 11,2-Dichloropropane ND 200 ug/L 08/02/21 15:47 11,4-Dioxane ND 1.00 ug/L 08/02/21 15:47 1EthylbenzeneND 5.00 ug/L 08/02/21 15:47 12-Hexanone ND 1.00 ug/L 08/02/21 15:47 1IsopropylbenzeneND 5.00 ug/L 08/02/21 15:47 1Methyl acetate ND 1.00 ug/L 08/02/21 15:47 1MethylcyclohexaneND 2.00 ug/L 08/02/21 15:47 1Methylene Chloride ND 5.00 ug/L 08/02/21 15:47 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 15:47 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 15:47 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 15:47 1o-Xylene ND 1.00 ug/L 08/02/21 15:47 1StyreneND 1.00 ug/L 08/02/21 15:47 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 15:47 1TetrachloroetheneND 1.00 ug/L 08/02/21 15:47 1TolueneND 1.00 ug/L 08/02/21 15:47 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 15:47 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 15:47 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 15:47 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 15:47 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 15:47 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 15:47 1TrichloroetheneND 2.00 ug/L 08/02/21 15:47 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 15:47 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 15:47 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)103 78 -120 08/02/21 15:47 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)98 08/02/21 15:47 177-120 1,2-Dichloroethane-d4 (Surr)94 08/02/21 15:47 170-127 Toluene-d8 (Surr)94 08/02/21 15:47 180-125 Lab Sample ID: 280-151322-23Client Sample ID: MW-5I-C Matrix: WaterDate Collected: 07/28/21 13:40 Date Received: 07/29/21 09:15 RL MDL Acetone ND 10.0 ug/L 08/02/21 11:38 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/02/21 11:38 1BenzeneND 1.00 ug/L 08/02/21 11:38 1BromoformND 2.00 ug/L 08/02/21 11:38 1BromomethaneND 6.00 ug/L 08/02/21 11:38 12-Butanone (MEK)ND 2.00 ug/L 08/02/21 11:38 1Carbon disulfide ND 1.00 ug/L 08/02/21 11:38 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 11:38 1ChlorobenzeneND 1.00 ug/L 08/02/21 11:38 1ChlorobromomethaneND 1.00 ug/L 08/02/21 11:38 1ChlorodibromomethaneND 2.00 ug/L 08/02/21 11:38 1ChloroethaneND Eurofins Denver Page 51 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151322-23Client Sample ID: MW-5I-C Matrix: WaterDate Collected: 07/28/21 13:40 Date Received: 07/29/21 09:15 RL MDL Chloroform ND 1.00 ug/L 08/02/21 11:38 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.00 ug/L 08/02/21 11:38 1ChloromethaneND 1.00 ug/L 08/02/21 11:38 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/02/21 11:38 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 11:38 1CyclohexaneND 5.00 ug/L 08/02/21 11:38 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 11:38 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 11:38 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 11:38 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 11:38 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 11:38 1DichlorobromomethaneND 2.00 ug/L 08/02/21 11:38 1DichlorodifluoromethaneND 1.00 ug/L 08/02/21 11:38 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 11:38 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 11:38 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 11:38 11,2-Dichloropropane ND 200 ug/L 08/02/21 11:38 11,4-Dioxane ND 1.00 ug/L 08/02/21 11:38 1EthylbenzeneND 5.00 ug/L 08/02/21 11:38 12-Hexanone ND 1.00 ug/L 08/02/21 11:38 1IsopropylbenzeneND 5.00 ug/L 08/02/21 11:38 1Methyl acetate ND 1.00 ug/L 08/02/21 11:38 1MethylcyclohexaneND 2.00 ug/L 08/02/21 11:38 1Methylene Chloride ND 5.00 ug/L 08/02/21 11:38 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/02/21 11:38 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 11:38 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 11:38 1o-Xylene ND 1.00 ug/L 08/02/21 11:38 1StyreneND 1.00 ug/L 08/02/21 11:38 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 11:38 1TetrachloroetheneND 1.00 ug/L 08/02/21 11:38 1TolueneND 1.00 ug/L 08/02/21 11:38 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 11:38 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 11:38 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 11:38 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 11:38 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 11:38 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 11:38 1TrichloroetheneND 2.00 ug/L 08/02/21 11:38 1TrichlorofluoromethaneND 3.00 ug/L 08/02/21 11:38 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 11:38 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)99 78 -120 08/02/21 11:38 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)100 08/02/21 11:38 177-120 1,2-Dichloroethane-d4 (Surr)93 08/02/21 11:38 170-127 Toluene-d8 (Surr)95 08/02/21 11:38 180-125 Eurofins Denver Page 52 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151378-1Client Sample ID: MW-3I Matrix: WaterDate Collected: 07/29/21 08:20 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/12/21 16:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/12/21 16:19 1BenzeneND 1.00 ug/L 08/12/21 16:19 1BromoformND 2.00 ug/L 08/12/21 16:19 1BromomethaneND 6.00 ug/L 08/12/21 16:19 12-Butanone (MEK)ND 2.00 ug/L 08/12/21 16:19 1Carbon disulfide ND 1.00 ug/L 08/12/21 16:19 1Carbon tetrachloride ND 1.00 ug/L 08/12/21 16:19 1ChlorobenzeneND 1.00 ug/L 08/12/21 16:19 1ChlorobromomethaneND 1.00 ug/L 08/12/21 16:19 1ChlorodibromomethaneND 2.00 ug/L 08/12/21 16:19 1ChloroethaneND 1.00 ug/L 08/12/21 16:19 1ChloroformND 2.00 ug/L 08/12/21 16:19 1ChloromethaneND 1.00 ug/L 08/12/21 16:19 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/12/21 16:19 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/12/21 16:19 1CyclohexaneND 5.00 ug/L 08/12/21 16:19 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/12/21 16:19 11,2-Dibromoethane ND 1.00 ug/L 08/12/21 16:19 11,2-Dichlorobenzene ND 1.00 ug/L 08/12/21 16:19 11,3-Dichlorobenzene ND 1.00 ug/L 08/12/21 16:19 11,4-Dichlorobenzene ND 1.00 ug/L 08/12/21 16:19 1DichlorobromomethaneND 2.00 ug/L 08/12/21 16:19 1DichlorodifluoromethaneND 1.00 ug/L 08/12/21 16:19 11,1-Dichloroethane ND 1.00 ug/L 08/12/21 16:19 11,2-Dichloroethane ND 1.00 ug/L 08/12/21 16:19 11,1-Dichloroethene ND 1.00 ug/L 08/12/21 16:19 11,2-Dichloropropane ND 200 ug/L 08/12/21 16:19 11,4-Dioxane ND 1.00 ug/L 08/12/21 16:19 1EthylbenzeneND 5.00 ug/L 08/12/21 16:19 12-Hexanone ND 1.00 ug/L 08/12/21 16:19 1IsopropylbenzeneND 5.00 ug/L 08/12/21 16:19 1Methyl acetate ND 1.00 ug/L 08/12/21 16:19 1MethylcyclohexaneND 2.00 ug/L 08/12/21 16:19 1Methylene Chloride ND 5.00 ug/L 08/12/21 16:19 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/12/21 16:19 1Methyl tert-butyl ether ND 2.00 ug/L 08/12/21 16:19 1m-Xylene & p-Xylene ND 1.00 ug/L 08/12/21 16:19 1o-Xylene ND 1.00 ug/L 08/12/21 16:19 1StyreneND 1.00 ug/L 08/12/21 16:19 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/12/21 16:19 1TetrachloroetheneND 1.00 ug/L 08/12/21 16:19 1TolueneND 1.00 ug/L 08/12/21 16:19 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/12/21 16:19 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/12/21 16:19 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/12/21 16:19 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/12/21 16:19 11,1,1-Trichloroethane ND 1.00 ug/L 08/12/21 16:19 11,1,2-Trichloroethane ND 1.00 ug/L 08/12/21 16:19 1TrichloroetheneND Eurofins Denver Page 53 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-1Client Sample ID: MW-3I Matrix: WaterDate Collected: 07/29/21 08:20 Date Received: 07/31/21 09:35 RL MDL Trichlorofluoromethane ND 2.00 ug/L 08/12/21 16:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.00 ug/L 08/12/21 16:19 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/12/21 16:19 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)101 78 -120 08/12/21 16:19 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)99 08/12/21 16:19 177-120 1,2-Dichloroethane-d4 (Surr)103 08/12/21 16:19 170-127 Toluene-d8 (Surr)99 08/12/21 16:19 180-125 Lab Sample ID: 280-151378-2Client Sample ID: MW-6 Matrix: WaterDate Collected: 07/29/21 09:45 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/05/21 13:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 13:42 1BenzeneND 1.00 ug/L 08/05/21 13:42 1BromoformND 2.00 ug/L 08/05/21 13:42 1BromomethaneND 6.00 ug/L 08/05/21 13:42 12-Butanone (MEK)ND 2.00 ug/L 08/05/21 13:42 1Carbon disulfide ND 1.00 ug/L 08/05/21 13:42 1Carbon tetrachloride ND 1.00 ug/L 08/05/21 13:42 1ChlorobenzeneND 1.00 ug/L 08/05/21 13:42 1ChlorobromomethaneND 1.00 ug/L 08/05/21 13:42 1ChlorodibromomethaneND 2.00 ug/L 08/05/21 13:42 1ChloroethaneND 1.00 ug/L 08/05/21 13:42 1ChloroformND 2.00 ug/L 08/05/21 13:42 1ChloromethaneND 1.00 ug/L 08/05/21 13:42 1cis-1,2-Dichloroethene 30.0 1.00 ug/L 08/05/21 13:42 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/05/21 13:42 1CyclohexaneND 5.00 ug/L 08/05/21 13:42 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/05/21 13:42 11,2-Dibromoethane ND 1.00 ug/L 08/05/21 13:42 11,2-Dichlorobenzene ND 1.00 ug/L 08/05/21 13:42 11,3-Dichlorobenzene ND 1.00 ug/L 08/05/21 13:42 11,4-Dichlorobenzene ND 1.00 ug/L 08/05/21 13:42 1DichlorobromomethaneND 2.00 ug/L 08/05/21 13:42 1DichlorodifluoromethaneND 1.00 ug/L 08/05/21 13:42 11,1-Dichloroethane ND 1.00 ug/L 08/05/21 13:42 11,2-Dichloroethane ND 1.00 ug/L 08/05/21 13:42 11,1-Dichloroethene ND 1.00 ug/L 08/05/21 13:42 11,2-Dichloropropane ND 200 ug/L 08/05/21 13:42 11,4-Dioxane ND 1.00 ug/L 08/05/21 13:42 1EthylbenzeneND 5.00 ug/L 08/05/21 13:42 12-Hexanone ND 1.00 ug/L 08/05/21 13:42 1IsopropylbenzeneND 5.00 ug/L 08/05/21 13:42 1Methyl acetate ND 1.00 ug/L 08/05/21 13:42 1MethylcyclohexaneND *1 2.00 ug/L 08/05/21 13:42 1Methylene Chloride ND 5.00 ug/L 08/05/21 13:42 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/05/21 13:42 1Methyl tert-butyl ether ND Eurofins Denver Page 54 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-2Client Sample ID: MW-6 Matrix: WaterDate Collected: 07/29/21 09:45 Date Received: 07/31/21 09:35 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 08/05/21 13:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 13:42 1o-Xylene ND 1.00 ug/L 08/05/21 13:42 1StyreneND 1.00 ug/L 08/05/21 13:42 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/05/21 13:42 1TetrachloroetheneND 1.00 ug/L 08/05/21 13:42 1TolueneND 1.00 ug/L 08/05/21 13:42 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/05/21 13:42 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/05/21 13:42 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/05/21 13:42 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/05/21 13:42 11,1,1-Trichloroethane ND 1.00 ug/L 08/05/21 13:42 11,1,2-Trichloroethane ND 1.00 ug/L 08/05/21 13:42 1Trichloroethene10.3 2.00 ug/L 08/05/21 13:42 1TrichlorofluoromethaneND 3.00 ug/L 08/05/21 13:42 11,1,2-Trichlorotrifluoroethane ND *1 1.00 ug/L 08/05/21 13:42 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)108 78 -120 08/05/21 13:42 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)100 08/05/21 13:42 177-120 1,2-Dichloroethane-d4 (Surr)110 08/05/21 13:42 170-127 Toluene-d8 (Surr)102 08/05/21 13:42 180-125 Lab Sample ID: 280-151378-3Client Sample ID: MW-6I Matrix: WaterDate Collected: 07/29/21 09:08 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/12/21 16:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/12/21 16:42 1BenzeneND 1.00 ug/L 08/12/21 16:42 1BromoformND 2.00 ug/L 08/12/21 16:42 1BromomethaneND 6.00 ug/L 08/12/21 16:42 12-Butanone (MEK)ND 2.00 ug/L 08/12/21 16:42 1Carbon disulfide ND 1.00 ug/L 08/12/21 16:42 1Carbon tetrachloride ND 1.00 ug/L 08/12/21 16:42 1ChlorobenzeneND 1.00 ug/L 08/12/21 16:42 1ChlorobromomethaneND 1.00 ug/L 08/12/21 16:42 1ChlorodibromomethaneND 2.00 ug/L 08/12/21 16:42 1ChloroethaneND 1.00 ug/L 08/12/21 16:42 1ChloroformND 2.00 ug/L 08/12/21 16:42 1ChloromethaneND 1.00 ug/L 08/12/21 16:42 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/12/21 16:42 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/12/21 16:42 1CyclohexaneND 5.00 ug/L 08/12/21 16:42 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/12/21 16:42 11,2-Dibromoethane ND 1.00 ug/L 08/12/21 16:42 11,2-Dichlorobenzene ND 1.00 ug/L 08/12/21 16:42 11,3-Dichlorobenzene ND 1.00 ug/L 08/12/21 16:42 11,4-Dichlorobenzene ND 1.00 ug/L 08/12/21 16:42 1DichlorobromomethaneND 2.00 ug/L 08/12/21 16:42 1DichlorodifluoromethaneND Eurofins Denver Page 55 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-3Client Sample ID: MW-6I Matrix: WaterDate Collected: 07/29/21 09:08 Date Received: 07/31/21 09:35 RL MDL 1,1-Dichloroethane ND 1.00 ug/L 08/12/21 16:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/12/21 16:42 11,2-Dichloroethane ND 1.00 ug/L 08/12/21 16:42 11,1-Dichloroethene ND 1.00 ug/L 08/12/21 16:42 11,2-Dichloropropane ND 200 ug/L 08/12/21 16:42 11,4-Dioxane ND 1.00 ug/L 08/12/21 16:42 1EthylbenzeneND 5.00 ug/L 08/12/21 16:42 12-Hexanone ND 1.00 ug/L 08/12/21 16:42 1IsopropylbenzeneND 5.00 ug/L 08/12/21 16:42 1Methyl acetate ND 1.00 ug/L 08/12/21 16:42 1MethylcyclohexaneND 2.00 ug/L 08/12/21 16:42 1Methylene Chloride ND 5.00 ug/L 08/12/21 16:42 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/12/21 16:42 1Methyl tert-butyl ether ND 2.00 ug/L 08/12/21 16:42 1m-Xylene & p-Xylene ND 1.00 ug/L 08/12/21 16:42 1o-Xylene ND 1.00 ug/L 08/12/21 16:42 1StyreneND 1.00 ug/L 08/12/21 16:42 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/12/21 16:42 1TetrachloroetheneND 1.00 ug/L 08/12/21 16:42 1TolueneND 1.00 ug/L 08/12/21 16:42 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/12/21 16:42 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/12/21 16:42 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/12/21 16:42 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/12/21 16:42 11,1,1-Trichloroethane ND 1.00 ug/L 08/12/21 16:42 11,1,2-Trichloroethane ND 1.00 ug/L 08/12/21 16:42 1TrichloroetheneND 2.00 ug/L 08/12/21 16:42 1TrichlorofluoromethaneND 3.00 ug/L 08/12/21 16:42 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/12/21 16:42 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)100 78 -120 08/12/21 16:42 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)99 08/12/21 16:42 177-120 1,2-Dichloroethane-d4 (Surr)100 08/12/21 16:42 170-127 Toluene-d8 (Surr)100 08/12/21 16:42 180-125 Lab Sample ID: 280-151378-5Client Sample ID: MW-11 Matrix: WaterDate Collected: 07/29/21 14:10 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/05/21 14:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 14:03 1BenzeneND 1.00 ug/L 08/05/21 14:03 1BromoformND 2.00 ug/L 08/05/21 14:03 1BromomethaneND 6.00 ug/L 08/05/21 14:03 12-Butanone (MEK)ND 2.00 ug/L 08/05/21 14:03 1Carbon disulfide ND 1.00 ug/L 08/05/21 14:03 1Carbon tetrachloride ND 1.00 ug/L 08/05/21 14:03 1ChlorobenzeneND 1.00 ug/L 08/05/21 14:03 1ChlorobromomethaneND 1.00 ug/L 08/05/21 14:03 1ChlorodibromomethaneND Eurofins Denver Page 56 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-5Client Sample ID: MW-11 Matrix: WaterDate Collected: 07/29/21 14:10 Date Received: 07/31/21 09:35 RL MDL Chloroethane ND 2.00 ug/L 08/05/21 14:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 14:03 1ChloroformND 2.00 ug/L 08/05/21 14:03 1ChloromethaneND 1.00 ug/L 08/05/21 14:03 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/05/21 14:03 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/05/21 14:03 1CyclohexaneND 5.00 ug/L 08/05/21 14:03 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/05/21 14:03 11,2-Dibromoethane ND 1.00 ug/L 08/05/21 14:03 11,2-Dichlorobenzene ND 1.00 ug/L 08/05/21 14:03 11,3-Dichlorobenzene ND 1.00 ug/L 08/05/21 14:03 11,4-Dichlorobenzene ND 1.00 ug/L 08/05/21 14:03 1DichlorobromomethaneND 2.00 ug/L 08/05/21 14:03 1DichlorodifluoromethaneND 1.00 ug/L 08/05/21 14:03 11,1-Dichloroethane ND 1.00 ug/L 08/05/21 14:03 11,2-Dichloroethane ND 1.00 ug/L 08/05/21 14:03 11,1-Dichloroethene ND 1.00 ug/L 08/05/21 14:03 11,2-Dichloropropane ND 200 ug/L 08/05/21 14:03 11,4-Dioxane ND 1.00 ug/L 08/05/21 14:03 1EthylbenzeneND 5.00 ug/L 08/05/21 14:03 12-Hexanone ND 1.00 ug/L 08/05/21 14:03 1IsopropylbenzeneND 5.00 ug/L 08/05/21 14:03 1Methyl acetate ND 1.00 ug/L 08/05/21 14:03 1MethylcyclohexaneND *1 2.00 ug/L 08/05/21 14:03 1Methylene Chloride ND 5.00 ug/L 08/05/21 14:03 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/05/21 14:03 1Methyl tert-butyl ether ND 2.00 ug/L 08/05/21 14:03 1m-Xylene & p-Xylene ND 1.00 ug/L 08/05/21 14:03 1o-Xylene ND 1.00 ug/L 08/05/21 14:03 1StyreneND 1.00 ug/L 08/05/21 14:03 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/05/21 14:03 1TetrachloroetheneND 1.00 ug/L 08/05/21 14:03 1TolueneND 1.00 ug/L 08/05/21 14:03 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/05/21 14:03 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/05/21 14:03 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/05/21 14:03 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/05/21 14:03 11,1,1-Trichloroethane ND 1.00 ug/L 08/05/21 14:03 11,1,2-Trichloroethane ND 1.00 ug/L 08/05/21 14:03 1TrichloroetheneND 2.00 ug/L 08/05/21 14:03 1TrichlorofluoromethaneND 3.00 ug/L 08/05/21 14:03 11,1,2-Trichlorotrifluoroethane ND *1 1.00 ug/L 08/05/21 14:03 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)108 78 -120 08/05/21 14:03 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)101 08/05/21 14:03 177-120 1,2-Dichloroethane-d4 (Surr)110 08/05/21 14:03 170-127 Toluene-d8 (Surr)101 08/05/21 14:03 180-125 Eurofins Denver Page 57 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151378-6Client Sample ID: MW-11I Matrix: WaterDate Collected: 07/29/21 13:30 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/05/21 14:24 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 14:24 1BenzeneND 1.00 ug/L 08/05/21 14:24 1BromoformND 2.00 ug/L 08/05/21 14:24 1BromomethaneND 6.00 ug/L 08/05/21 14:24 12-Butanone (MEK)ND 2.00 ug/L 08/05/21 14:24 1Carbon disulfide ND 1.00 ug/L 08/05/21 14:24 1Carbon tetrachloride ND 1.00 ug/L 08/05/21 14:24 1ChlorobenzeneND 1.00 ug/L 08/05/21 14:24 1ChlorobromomethaneND 1.00 ug/L 08/05/21 14:24 1ChlorodibromomethaneND 2.00 ug/L 08/05/21 14:24 1ChloroethaneND 1.00 ug/L 08/05/21 14:24 1ChloroformND 2.00 ug/L 08/05/21 14:24 1ChloromethaneND 1.00 ug/L 08/05/21 14:24 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/05/21 14:24 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/05/21 14:24 1CyclohexaneND 5.00 ug/L 08/05/21 14:24 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/05/21 14:24 11,2-Dibromoethane ND 1.00 ug/L 08/05/21 14:24 11,2-Dichlorobenzene ND 1.00 ug/L 08/05/21 14:24 11,3-Dichlorobenzene ND 1.00 ug/L 08/05/21 14:24 11,4-Dichlorobenzene ND 1.00 ug/L 08/05/21 14:24 1DichlorobromomethaneND 2.00 ug/L 08/05/21 14:24 1DichlorodifluoromethaneND 1.00 ug/L 08/05/21 14:24 11,1-Dichloroethane ND 1.00 ug/L 08/05/21 14:24 11,2-Dichloroethane ND 1.00 ug/L 08/05/21 14:24 11,1-Dichloroethene ND 1.00 ug/L 08/05/21 14:24 11,2-Dichloropropane ND 200 ug/L 08/05/21 14:24 11,4-Dioxane ND 1.00 ug/L 08/05/21 14:24 1EthylbenzeneND 5.00 ug/L 08/05/21 14:24 12-Hexanone ND 1.00 ug/L 08/05/21 14:24 1IsopropylbenzeneND 5.00 ug/L 08/05/21 14:24 1Methyl acetate ND 1.00 ug/L 08/05/21 14:24 1MethylcyclohexaneND *1 2.00 ug/L 08/05/21 14:24 1Methylene Chloride ND 5.00 ug/L 08/05/21 14:24 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/05/21 14:24 1Methyl tert-butyl ether ND 2.00 ug/L 08/05/21 14:24 1m-Xylene & p-Xylene ND 1.00 ug/L 08/05/21 14:24 1o-Xylene ND 1.00 ug/L 08/05/21 14:24 1StyreneND 1.00 ug/L 08/05/21 14:24 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/05/21 14:24 1TetrachloroetheneND 1.00 ug/L 08/05/21 14:24 1TolueneND 1.00 ug/L 08/05/21 14:24 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/05/21 14:24 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/05/21 14:24 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/05/21 14:24 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/05/21 14:24 11,1,1-Trichloroethane ND 1.00 ug/L 08/05/21 14:24 11,1,2-Trichloroethane ND 1.00 ug/L 08/05/21 14:24 1TrichloroetheneND Eurofins Denver Page 58 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-6Client Sample ID: MW-11I Matrix: WaterDate Collected: 07/29/21 13:30 Date Received: 07/31/21 09:35 RL MDL Trichlorofluoromethane ND 2.00 ug/L 08/05/21 14:24 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.00 ug/L 08/05/21 14:24 11,1,2-Trichlorotrifluoroethane ND *1 1.00 ug/L 08/05/21 14:24 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)109 78 -120 08/05/21 14:24 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)97 08/05/21 14:24 177-120 1,2-Dichloroethane-d4 (Surr)108 08/05/21 14:24 170-127 Toluene-d8 (Surr)105 08/05/21 14:24 180-125 Lab Sample ID: 280-151378-7Client Sample ID: MW-17I Matrix: WaterDate Collected: 07/29/21 09:15 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/05/21 14:46 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 14:46 1BenzeneND 1.00 ug/L 08/05/21 14:46 1BromoformND 2.00 ug/L 08/05/21 14:46 1BromomethaneND 6.00 ug/L 08/05/21 14:46 12-Butanone (MEK)ND 2.00 ug/L 08/05/21 14:46 1Carbon disulfide ND 1.00 ug/L 08/05/21 14:46 1Carbon tetrachloride ND 1.00 ug/L 08/05/21 14:46 1ChlorobenzeneND 1.00 ug/L 08/05/21 14:46 1ChlorobromomethaneND 1.00 ug/L 08/05/21 14:46 1ChlorodibromomethaneND 2.00 ug/L 08/05/21 14:46 1ChloroethaneND 1.00 ug/L 08/05/21 14:46 1ChloroformND 2.00 ug/L 08/05/21 14:46 1ChloromethaneND 1.00 ug/L 08/05/21 14:46 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/05/21 14:46 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/05/21 14:46 1CyclohexaneND 5.00 ug/L 08/05/21 14:46 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/05/21 14:46 11,2-Dibromoethane ND 1.00 ug/L 08/05/21 14:46 11,2-Dichlorobenzene ND 1.00 ug/L 08/05/21 14:46 11,3-Dichlorobenzene ND 1.00 ug/L 08/05/21 14:46 11,4-Dichlorobenzene ND 1.00 ug/L 08/05/21 14:46 1DichlorobromomethaneND 2.00 ug/L 08/05/21 14:46 1DichlorodifluoromethaneND 1.00 ug/L 08/05/21 14:46 11,1-Dichloroethane ND 1.00 ug/L 08/05/21 14:46 11,2-Dichloroethane ND 1.00 ug/L 08/05/21 14:46 11,1-Dichloroethene ND 1.00 ug/L 08/05/21 14:46 11,2-Dichloropropane ND 200 ug/L 08/05/21 14:46 11,4-Dioxane ND 1.00 ug/L 08/05/21 14:46 1EthylbenzeneND 5.00 ug/L 08/05/21 14:46 12-Hexanone ND 1.00 ug/L 08/05/21 14:46 1IsopropylbenzeneND 5.00 ug/L 08/05/21 14:46 1Methyl acetate ND 1.00 ug/L 08/05/21 14:46 1MethylcyclohexaneND *1 2.00 ug/L 08/05/21 14:46 1Methylene Chloride ND 5.00 ug/L 08/05/21 14:46 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/05/21 14:46 1Methyl tert-butyl ether ND Eurofins Denver Page 59 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-7Client Sample ID: MW-17I Matrix: WaterDate Collected: 07/29/21 09:15 Date Received: 07/31/21 09:35 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 08/05/21 14:46 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 14:46 1o-Xylene ND 1.00 ug/L 08/05/21 14:46 1StyreneND 1.00 ug/L 08/05/21 14:46 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/05/21 14:46 1TetrachloroetheneND 1.00 ug/L 08/05/21 14:46 1TolueneND 1.00 ug/L 08/05/21 14:46 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/05/21 14:46 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/05/21 14:46 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/05/21 14:46 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/05/21 14:46 11,1,1-Trichloroethane ND 1.00 ug/L 08/05/21 14:46 11,1,2-Trichloroethane ND 1.00 ug/L 08/05/21 14:46 1TrichloroetheneND 2.00 ug/L 08/05/21 14:46 1TrichlorofluoromethaneND 3.00 ug/L 08/05/21 14:46 11,1,2-Trichlorotrifluoroethane ND *1 1.00 ug/L 08/05/21 14:46 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)106 78 -120 08/05/21 14:46 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)100 08/05/21 14:46 177-120 1,2-Dichloroethane-d4 (Surr)107 08/05/21 14:46 170-127 Toluene-d8 (Surr)103 08/05/21 14:46 180-125 Lab Sample ID: 280-151378-8Client Sample ID: MW-18I Matrix: WaterDate Collected: 07/29/21 10:25 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/05/21 15:07 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 15:07 1BenzeneND 1.00 ug/L 08/05/21 15:07 1BromoformND 2.00 ug/L 08/05/21 15:07 1BromomethaneND 6.00 ug/L 08/05/21 15:07 12-Butanone (MEK)ND 2.00 ug/L 08/05/21 15:07 1Carbon disulfide ND 1.00 ug/L 08/05/21 15:07 1Carbon tetrachloride ND 1.00 ug/L 08/05/21 15:07 1ChlorobenzeneND 1.00 ug/L 08/05/21 15:07 1ChlorobromomethaneND 1.00 ug/L 08/05/21 15:07 1ChlorodibromomethaneND 2.00 ug/L 08/05/21 15:07 1ChloroethaneND 1.00 ug/L 08/05/21 15:07 1ChloroformND 2.00 ug/L 08/05/21 15:07 1ChloromethaneND 1.00 ug/L 08/05/21 15:07 1cis-1,2-Dichloroethene 5.02 1.00 ug/L 08/05/21 15:07 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/05/21 15:07 1CyclohexaneND 5.00 ug/L 08/05/21 15:07 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/05/21 15:07 11,2-Dibromoethane ND 1.00 ug/L 08/05/21 15:07 11,2-Dichlorobenzene ND 1.00 ug/L 08/05/21 15:07 11,3-Dichlorobenzene ND 1.00 ug/L 08/05/21 15:07 11,4-Dichlorobenzene ND 1.00 ug/L 08/05/21 15:07 1DichlorobromomethaneND 2.00 ug/L 08/05/21 15:07 1DichlorodifluoromethaneND Eurofins Denver Page 60 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-8Client Sample ID: MW-18I Matrix: WaterDate Collected: 07/29/21 10:25 Date Received: 07/31/21 09:35 RL MDL 1,1-Dichloroethane 12.1 1.00 ug/L 08/05/21 15:07 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 15:07 11,2-Dichloroethane ND 1.00 ug/L 08/05/21 15:07 11,1-Dichloroethene 3.93 1.00 ug/L 08/05/21 15:07 11,2-Dichloropropane ND 200 ug/L 08/05/21 15:07 11,4-Dioxane ND 1.00 ug/L 08/05/21 15:07 1EthylbenzeneND 5.00 ug/L 08/05/21 15:07 12-Hexanone ND 1.00 ug/L 08/05/21 15:07 1IsopropylbenzeneND 5.00 ug/L 08/05/21 15:07 1Methyl acetate ND 1.00 ug/L 08/05/21 15:07 1MethylcyclohexaneND *1 2.00 ug/L 08/05/21 15:07 1Methylene Chloride ND 5.00 ug/L 08/05/21 15:07 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/05/21 15:07 1Methyl tert-butyl ether ND 2.00 ug/L 08/05/21 15:07 1m-Xylene & p-Xylene ND 1.00 ug/L 08/05/21 15:07 1o-Xylene ND 1.00 ug/L 08/05/21 15:07 1StyreneND 1.00 ug/L 08/05/21 15:07 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/05/21 15:07 1TetrachloroetheneND 1.00 ug/L 08/05/21 15:07 1TolueneND 1.00 ug/L 08/05/21 15:07 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/05/21 15:07 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/05/21 15:07 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/05/21 15:07 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/05/21 15:07 11,1,1-Trichloroethane ND 1.00 ug/L 08/05/21 15:07 11,1,2-Trichloroethane ND 1.00 ug/L 08/05/21 15:07 1TrichloroetheneND 2.00 ug/L 08/05/21 15:07 1TrichlorofluoromethaneND 3.00 ug/L 08/05/21 15:07 11,1,2-Trichlorotrifluoroethane ND *1 1.00 ug/L 08/05/21 15:07 1Vinyl chloride 5.47 4-Bromofluorobenzene (Surr)106 78 -120 08/05/21 15:07 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)101 08/05/21 15:07 177-120 1,2-Dichloroethane-d4 (Surr)108 08/05/21 15:07 170-127 Toluene-d8 (Surr)107 08/05/21 15:07 180-125 Lab Sample ID: 280-151378-10Client Sample ID: MW-20I Matrix: WaterDate Collected: 07/29/21 11:25 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/05/21 15:28 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 15:28 1BenzeneND 1.00 ug/L 08/05/21 15:28 1BromoformND 2.00 ug/L 08/05/21 15:28 1BromomethaneND 6.00 ug/L 08/05/21 15:28 12-Butanone (MEK)ND 2.00 ug/L 08/05/21 15:28 1Carbon disulfide ND 1.00 ug/L 08/05/21 15:28 1Carbon tetrachloride ND 1.00 ug/L 08/05/21 15:28 1ChlorobenzeneND 1.00 ug/L 08/05/21 15:28 1ChlorobromomethaneND 1.00 ug/L 08/05/21 15:28 1ChlorodibromomethaneND Eurofins Denver Page 61 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-10Client Sample ID: MW-20I Matrix: WaterDate Collected: 07/29/21 11:25 Date Received: 07/31/21 09:35 RL MDL Chloroethane ND 2.00 ug/L 08/05/21 15:28 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 15:28 1ChloroformND 2.00 ug/L 08/05/21 15:28 1ChloromethaneND 1.00 ug/L 08/05/21 15:28 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/05/21 15:28 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/05/21 15:28 1CyclohexaneND 5.00 ug/L 08/05/21 15:28 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/05/21 15:28 11,2-Dibromoethane ND 1.00 ug/L 08/05/21 15:28 11,2-Dichlorobenzene ND 1.00 ug/L 08/05/21 15:28 11,3-Dichlorobenzene ND 1.00 ug/L 08/05/21 15:28 11,4-Dichlorobenzene ND 1.00 ug/L 08/05/21 15:28 1DichlorobromomethaneND 2.00 ug/L 08/05/21 15:28 1DichlorodifluoromethaneND 1.00 ug/L 08/05/21 15:28 11,1-Dichloroethane ND 1.00 ug/L 08/05/21 15:28 11,2-Dichloroethane ND 1.00 ug/L 08/05/21 15:28 11,1-Dichloroethene ND 1.00 ug/L 08/05/21 15:28 11,2-Dichloropropane ND 200 ug/L 08/05/21 15:28 11,4-Dioxane ND 1.00 ug/L 08/05/21 15:28 1EthylbenzeneND 5.00 ug/L 08/05/21 15:28 12-Hexanone ND 1.00 ug/L 08/05/21 15:28 1IsopropylbenzeneND 5.00 ug/L 08/05/21 15:28 1Methyl acetate ND 1.00 ug/L 08/05/21 15:28 1MethylcyclohexaneND *1 2.00 ug/L 08/05/21 15:28 1Methylene Chloride ND 5.00 ug/L 08/05/21 15:28 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/05/21 15:28 1Methyl tert-butyl ether ND 2.00 ug/L 08/05/21 15:28 1m-Xylene & p-Xylene ND 1.00 ug/L 08/05/21 15:28 1o-Xylene ND 1.00 ug/L 08/05/21 15:28 1StyreneND 1.00 ug/L 08/05/21 15:28 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/05/21 15:28 1TetrachloroetheneND 1.00 ug/L 08/05/21 15:28 1TolueneND 1.00 ug/L 08/05/21 15:28 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/05/21 15:28 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/05/21 15:28 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/05/21 15:28 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/05/21 15:28 11,1,1-Trichloroethane ND 1.00 ug/L 08/05/21 15:28 11,1,2-Trichloroethane ND 1.00 ug/L 08/05/21 15:28 1TrichloroetheneND 2.00 ug/L 08/05/21 15:28 1TrichlorofluoromethaneND 3.00 ug/L 08/05/21 15:28 11,1,2-Trichlorotrifluoroethane ND *1 1.00 ug/L 08/05/21 15:28 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)109 78 -120 08/05/21 15:28 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)101 08/05/21 15:28 177-120 1,2-Dichloroethane-d4 (Surr)106 08/05/21 15:28 170-127 Toluene-d8 (Surr)105 08/05/21 15:28 180-125 Eurofins Denver Page 62 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151378-11Client Sample ID: MW-20I-a Matrix: WaterDate Collected: 07/29/21 11:30 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/05/21 15:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 15:49 1BenzeneND 1.00 ug/L 08/05/21 15:49 1BromoformND 2.00 ug/L 08/05/21 15:49 1BromomethaneND 6.00 ug/L 08/05/21 15:49 12-Butanone (MEK)ND 2.00 ug/L 08/05/21 15:49 1Carbon disulfide ND 1.00 ug/L 08/05/21 15:49 1Carbon tetrachloride ND 1.00 ug/L 08/05/21 15:49 1ChlorobenzeneND 1.00 ug/L 08/05/21 15:49 1ChlorobromomethaneND 1.00 ug/L 08/05/21 15:49 1ChlorodibromomethaneND 2.00 ug/L 08/05/21 15:49 1ChloroethaneND 1.00 ug/L 08/05/21 15:49 1ChloroformND 2.00 ug/L 08/05/21 15:49 1ChloromethaneND 1.00 ug/L 08/05/21 15:49 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/05/21 15:49 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/05/21 15:49 1CyclohexaneND 5.00 ug/L 08/05/21 15:49 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/05/21 15:49 11,2-Dibromoethane ND 1.00 ug/L 08/05/21 15:49 11,2-Dichlorobenzene ND 1.00 ug/L 08/05/21 15:49 11,3-Dichlorobenzene ND 1.00 ug/L 08/05/21 15:49 11,4-Dichlorobenzene ND 1.00 ug/L 08/05/21 15:49 1DichlorobromomethaneND 2.00 ug/L 08/05/21 15:49 1DichlorodifluoromethaneND 1.00 ug/L 08/05/21 15:49 11,1-Dichloroethane ND 1.00 ug/L 08/05/21 15:49 11,2-Dichloroethane ND 1.00 ug/L 08/05/21 15:49 11,1-Dichloroethene ND 1.00 ug/L 08/05/21 15:49 11,2-Dichloropropane ND 200 ug/L 08/05/21 15:49 11,4-Dioxane ND 1.00 ug/L 08/05/21 15:49 1EthylbenzeneND 5.00 ug/L 08/05/21 15:49 12-Hexanone ND 1.00 ug/L 08/05/21 15:49 1IsopropylbenzeneND 5.00 ug/L 08/05/21 15:49 1Methyl acetate ND 1.00 ug/L 08/05/21 15:49 1MethylcyclohexaneND *1 2.00 ug/L 08/05/21 15:49 1Methylene Chloride ND 5.00 ug/L 08/05/21 15:49 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/05/21 15:49 1Methyl tert-butyl ether ND 2.00 ug/L 08/05/21 15:49 1m-Xylene & p-Xylene ND 1.00 ug/L 08/05/21 15:49 1o-Xylene ND 1.00 ug/L 08/05/21 15:49 1StyreneND 1.00 ug/L 08/05/21 15:49 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/05/21 15:49 1TetrachloroetheneND 1.00 ug/L 08/05/21 15:49 1TolueneND 1.00 ug/L 08/05/21 15:49 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/05/21 15:49 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/05/21 15:49 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/05/21 15:49 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/05/21 15:49 11,1,1-Trichloroethane ND 1.00 ug/L 08/05/21 15:49 11,1,2-Trichloroethane ND 1.00 ug/L 08/05/21 15:49 1TrichloroetheneND Eurofins Denver Page 63 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-11Client Sample ID: MW-20I-a Matrix: WaterDate Collected: 07/29/21 11:30 Date Received: 07/31/21 09:35 RL MDL Trichlorofluoromethane ND 2.00 ug/L 08/05/21 15:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.00 ug/L 08/05/21 15:49 11,1,2-Trichlorotrifluoroethane ND *1 1.00 ug/L 08/05/21 15:49 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)109 78 -120 08/05/21 15:49 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)98 08/05/21 15:49 177-120 1,2-Dichloroethane-d4 (Surr)113 08/05/21 15:49 170-127 Toluene-d8 (Surr)103 08/05/21 15:49 180-125 Lab Sample ID: 280-151378-13Client Sample ID: MW-8-c Matrix: WaterDate Collected: 07/29/21 11:05 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/05/21 16:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 16:10 1BenzeneND 1.00 ug/L 08/05/21 16:10 1BromoformND 2.00 ug/L 08/05/21 16:10 1BromomethaneND 6.00 ug/L 08/05/21 16:10 12-Butanone (MEK)ND 2.00 ug/L 08/05/21 16:10 1Carbon disulfide ND 1.00 ug/L 08/05/21 16:10 1Carbon tetrachloride ND 1.00 ug/L 08/05/21 16:10 1ChlorobenzeneND 1.00 ug/L 08/05/21 16:10 1ChlorobromomethaneND 1.00 ug/L 08/05/21 16:10 1ChlorodibromomethaneND 2.00 ug/L 08/05/21 16:10 1ChloroethaneND 1.00 ug/L 08/05/21 16:10 1ChloroformND 2.00 ug/L 08/05/21 16:10 1ChloromethaneND 1.00 ug/L 08/05/21 16:10 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/05/21 16:10 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/05/21 16:10 1CyclohexaneND 5.00 ug/L 08/05/21 16:10 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/05/21 16:10 11,2-Dibromoethane ND 1.00 ug/L 08/05/21 16:10 11,2-Dichlorobenzene ND 1.00 ug/L 08/05/21 16:10 11,3-Dichlorobenzene ND 1.00 ug/L 08/05/21 16:10 11,4-Dichlorobenzene ND 1.00 ug/L 08/05/21 16:10 1DichlorobromomethaneND 2.00 ug/L 08/05/21 16:10 1DichlorodifluoromethaneND 1.00 ug/L 08/05/21 16:10 11,1-Dichloroethane ND 1.00 ug/L 08/05/21 16:10 11,2-Dichloroethane ND 1.00 ug/L 08/05/21 16:10 11,1-Dichloroethene ND 1.00 ug/L 08/05/21 16:10 11,2-Dichloropropane ND 200 ug/L 08/05/21 16:10 11,4-Dioxane ND 1.00 ug/L 08/05/21 16:10 1EthylbenzeneND 5.00 ug/L 08/05/21 16:10 12-Hexanone ND 1.00 ug/L 08/05/21 16:10 1IsopropylbenzeneND 5.00 ug/L 08/05/21 16:10 1Methyl acetate ND 1.00 ug/L 08/05/21 16:10 1MethylcyclohexaneND *1 2.00 ug/L 08/05/21 16:10 1Methylene Chloride ND 5.00 ug/L 08/05/21 16:10 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/05/21 16:10 1Methyl tert-butyl ether ND Eurofins Denver Page 64 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-13Client Sample ID: MW-8-c Matrix: WaterDate Collected: 07/29/21 11:05 Date Received: 07/31/21 09:35 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 08/05/21 16:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/05/21 16:10 1o-Xylene ND 1.00 ug/L 08/05/21 16:10 1StyreneND 1.00 ug/L 08/05/21 16:10 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/05/21 16:10 1TetrachloroetheneND 1.00 ug/L 08/05/21 16:10 1TolueneND 1.00 ug/L 08/05/21 16:10 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/05/21 16:10 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/05/21 16:10 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/05/21 16:10 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/05/21 16:10 11,1,1-Trichloroethane ND 1.00 ug/L 08/05/21 16:10 11,1,2-Trichloroethane ND 1.00 ug/L 08/05/21 16:10 1TrichloroetheneND 2.00 ug/L 08/05/21 16:10 1TrichlorofluoromethaneND 3.00 ug/L 08/05/21 16:10 11,1,2-Trichlorotrifluoroethane ND *1 1.00 ug/L 08/05/21 16:10 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)109 78 -120 08/05/21 16:10 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)98 08/05/21 16:10 177-120 1,2-Dichloroethane-d4 (Surr)107 08/05/21 16:10 170-127 Toluene-d8 (Surr)106 08/05/21 16:10 180-125 Lab Sample ID: 280-151378-14Client Sample ID: MW-9 Matrix: WaterDate Collected: 07/30/21 09:05 Date Received: 07/31/21 09:35 RL MDL Acetone ND 50.0 ug/L 08/04/21 13:51 5 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 08/04/21 13:51 5BenzeneND *1 5.00 ug/L 08/04/21 13:51 5BromoformND 10.0 ug/L 08/04/21 13:51 5BromomethaneND 30.0 ug/L 08/04/21 13:51 52-Butanone (MEK)ND 10.0 ug/L 08/04/21 13:51 5Carbon disulfide ND *1 5.00 ug/L 08/04/21 13:51 5Carbon tetrachloride ND *1 5.00 ug/L 08/04/21 13:51 5ChlorobenzeneND 5.00 ug/L 08/04/21 13:51 5ChlorobromomethaneND 5.00 ug/L 08/04/21 13:51 5ChlorodibromomethaneND 10.0 ug/L 08/04/21 13:51 5ChloroethaneND 5.00 ug/L 08/04/21 13:51 5ChloroformND 10.0 ug/L 08/04/21 13:51 5ChloromethaneND 5.00 ug/L 08/04/21 13:51 5cis-1,2-Dichloroethene 306 5.00 ug/L 08/04/21 13:51 5cis-1,3-Dichloropropene ND 10.0 ug/L 08/04/21 13:51 5CyclohexaneND *1 25.0 ug/L 08/04/21 13:51 51,2-Dibromo-3-Chloropropane ND 5.00 ug/L 08/04/21 13:51 51,2-Dibromoethane ND 5.00 ug/L 08/04/21 13:51 51,2-Dichlorobenzene ND 5.00 ug/L 08/04/21 13:51 51,3-Dichlorobenzene ND 5.00 ug/L 08/04/21 13:51 51,4-Dichlorobenzene ND 5.00 ug/L 08/04/21 13:51 5DichlorobromomethaneND *1 10.0 ug/L 08/04/21 13:51 5DichlorodifluoromethaneND *1 Eurofins Denver Page 65 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-14Client Sample ID: MW-9 Matrix: WaterDate Collected: 07/30/21 09:05 Date Received: 07/31/21 09:35 RL MDL 1,1-Dichloroethane ND 5.00 ug/L 08/04/21 13:51 5 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 08/04/21 13:51 51,2-Dichloroethane ND 5.00 ug/L 08/04/21 13:51 51,1-Dichloroethene ND *1 5.00 ug/L 08/04/21 13:51 51,2-Dichloropropane ND 1000 ug/L 08/04/21 13:51 51,4-Dioxane ND 5.00 ug/L 08/04/21 13:51 5EthylbenzeneND 25.0 ug/L 08/04/21 13:51 52-Hexanone ND 5.00 ug/L 08/04/21 13:51 5IsopropylbenzeneND 25.0 ug/L 08/04/21 13:51 5Methyl acetate ND 5.00 ug/L 08/04/21 13:51 5MethylcyclohexaneND *1 10.0 ug/L 08/04/21 13:51 5Methylene Chloride ND 25.0 ug/L 08/04/21 13:51 54-Methyl-2-pentanone (MIBK)ND 25.0 ug/L 08/04/21 13:51 5Methyl tert-butyl ether ND 10.0 ug/L 08/04/21 13:51 5m-Xylene & p-Xylene ND 5.00 ug/L 08/04/21 13:51 5o-Xylene ND 5.00 ug/L 08/04/21 13:51 5StyreneND 5.00 ug/L 08/04/21 13:51 51,1,2,2-Tetrachloroethane ND 5.00 ug/L 08/04/21 13:51 5TetrachloroetheneND 5.00 ug/L 08/04/21 13:51 5TolueneND 5.00 ug/L 08/04/21 13:51 5trans-1,2-Dichloroethene 6.68 15.0 ug/L 08/04/21 13:51 5trans-1,3-Dichloropropene ND 5.00 ug/L 08/04/21 13:51 51,2,3-Trichlorobenzene ND 5.00 ug/L 08/04/21 13:51 51,2,4-Trichlorobenzene ND 5.00 ug/L 08/04/21 13:51 51,1,1-Trichloroethane ND *1 5.00 ug/L 08/04/21 13:51 51,1,2-Trichloroethane ND 5.00 ug/L 08/04/21 13:51 5TrichloroetheneND 10.0 ug/L 08/04/21 13:51 5TrichlorofluoromethaneND 15.0 ug/L 08/04/21 13:51 51,1,2-Trichlorotrifluoroethane ND *1 5.00 ug/L 08/04/21 13:51 5Vinyl chloride 21.0 4-Bromofluorobenzene (Surr)108 78 -120 08/04/21 13:51 5 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)99 08/04/21 13:51 577-120 1,2-Dichloroethane-d4 (Surr)106 08/04/21 13:51 570-127 Toluene-d8 (Surr)106 08/04/21 13:51 580-125 Lab Sample ID: 280-151378-15Client Sample ID: MW-9-a Matrix: WaterDate Collected: 07/30/21 09:05 Date Received: 07/31/21 09:35 RL MDL Acetone ND 50.0 ug/L 08/04/21 14:13 5 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 08/04/21 14:13 5BenzeneND *1 5.00 ug/L 08/04/21 14:13 5BromoformND 10.0 ug/L 08/04/21 14:13 5BromomethaneND 30.0 ug/L 08/04/21 14:13 52-Butanone (MEK)ND 10.0 ug/L 08/04/21 14:13 5Carbon disulfide ND *1 5.00 ug/L 08/04/21 14:13 5Carbon tetrachloride ND *1 5.00 ug/L 08/04/21 14:13 5ChlorobenzeneND 5.00 ug/L 08/04/21 14:13 5ChlorobromomethaneND 5.00 ug/L 08/04/21 14:13 5ChlorodibromomethaneND Eurofins Denver Page 66 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-15Client Sample ID: MW-9-a Matrix: WaterDate Collected: 07/30/21 09:05 Date Received: 07/31/21 09:35 RL MDL Chloroethane ND 10.0 ug/L 08/04/21 14:13 5 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 08/04/21 14:13 5ChloroformND 10.0 ug/L 08/04/21 14:13 5ChloromethaneND 5.00 ug/L 08/04/21 14:13 5cis-1,2-Dichloroethene 317 5.00 ug/L 08/04/21 14:13 5cis-1,3-Dichloropropene ND 10.0 ug/L 08/04/21 14:13 5CyclohexaneND *1 25.0 ug/L 08/04/21 14:13 51,2-Dibromo-3-Chloropropane ND 5.00 ug/L 08/04/21 14:13 51,2-Dibromoethane ND 5.00 ug/L 08/04/21 14:13 51,2-Dichlorobenzene ND 5.00 ug/L 08/04/21 14:13 51,3-Dichlorobenzene ND 5.00 ug/L 08/04/21 14:13 51,4-Dichlorobenzene ND 5.00 ug/L 08/04/21 14:13 5DichlorobromomethaneND *1 10.0 ug/L 08/04/21 14:13 5DichlorodifluoromethaneND *1 5.00 ug/L 08/04/21 14:13 51,1-Dichloroethane ND 5.00 ug/L 08/04/21 14:13 51,2-Dichloroethane ND 5.00 ug/L 08/04/21 14:13 51,1-Dichloroethene ND *1 5.00 ug/L 08/04/21 14:13 51,2-Dichloropropane ND 1000 ug/L 08/04/21 14:13 51,4-Dioxane ND 5.00 ug/L 08/04/21 14:13 5EthylbenzeneND 25.0 ug/L 08/04/21 14:13 52-Hexanone ND 5.00 ug/L 08/04/21 14:13 5IsopropylbenzeneND 25.0 ug/L 08/04/21 14:13 5Methyl acetate ND 5.00 ug/L 08/04/21 14:13 5MethylcyclohexaneND *1 10.0 ug/L 08/04/21 14:13 5Methylene Chloride ND 25.0 ug/L 08/04/21 14:13 54-Methyl-2-pentanone (MIBK)ND 25.0 ug/L 08/04/21 14:13 5Methyl tert-butyl ether ND 10.0 ug/L 08/04/21 14:13 5m-Xylene & p-Xylene ND 5.00 ug/L 08/04/21 14:13 5o-Xylene ND 5.00 ug/L 08/04/21 14:13 5StyreneND 5.00 ug/L 08/04/21 14:13 51,1,2,2-Tetrachloroethane ND 5.00 ug/L 08/04/21 14:13 5TetrachloroetheneND 5.00 ug/L 08/04/21 14:13 5TolueneND 5.00 ug/L 08/04/21 14:13 5trans-1,2-Dichloroethene 5.30 15.0 ug/L 08/04/21 14:13 5trans-1,3-Dichloropropene ND 5.00 ug/L 08/04/21 14:13 51,2,3-Trichlorobenzene ND 5.00 ug/L 08/04/21 14:13 51,2,4-Trichlorobenzene ND 5.00 ug/L 08/04/21 14:13 51,1,1-Trichloroethane ND *1 5.00 ug/L 08/04/21 14:13 51,1,2-Trichloroethane ND 5.00 ug/L 08/04/21 14:13 5TrichloroetheneND 10.0 ug/L 08/04/21 14:13 5TrichlorofluoromethaneND 15.0 ug/L 08/04/21 14:13 51,1,2-Trichlorotrifluoroethane ND *1 5.00 ug/L 08/04/21 14:13 5Vinyl chloride 17.7 4-Bromofluorobenzene (Surr)111 78 -120 08/04/21 14:13 5 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)102 08/04/21 14:13 577-120 1,2-Dichloroethane-d4 (Surr)104 08/04/21 14:13 570-127 Toluene-d8 (Surr)103 08/04/21 14:13 580-125 Eurofins Denver Page 67 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151378-16Client Sample ID: MW-9I Matrix: WaterDate Collected: 07/30/21 09:10 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/12/21 17:05 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/12/21 17:05 1BenzeneND 1.00 ug/L 08/12/21 17:05 1BromoformND 2.00 ug/L 08/12/21 17:05 1BromomethaneND 6.00 ug/L 08/12/21 17:05 12-Butanone (MEK)ND 2.00 ug/L 08/12/21 17:05 1Carbon disulfide ND 1.00 ug/L 08/12/21 17:05 1Carbon tetrachloride ND 1.00 ug/L 08/12/21 17:05 1ChlorobenzeneND 1.00 ug/L 08/12/21 17:05 1ChlorobromomethaneND 1.00 ug/L 08/12/21 17:05 1ChlorodibromomethaneND 2.00 ug/L 08/12/21 17:05 1ChloroethaneND 1.00 ug/L 08/12/21 17:05 1ChloroformND 2.00 ug/L 08/12/21 17:05 1ChloromethaneND 1.00 ug/L 08/12/21 17:05 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/12/21 17:05 1CyclohexaneND 5.00 ug/L 08/12/21 17:05 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/12/21 17:05 11,2-Dibromoethane ND 1.00 ug/L 08/12/21 17:05 11,2-Dichlorobenzene ND 1.00 ug/L 08/12/21 17:05 11,3-Dichlorobenzene ND 1.00 ug/L 08/12/21 17:05 11,4-Dichlorobenzene ND 1.00 ug/L 08/12/21 17:05 1DichlorobromomethaneND 2.00 ug/L 08/12/21 17:05 1DichlorodifluoromethaneND 1.00 ug/L 08/12/21 17:05 11,1-Dichloroethane 3.86 1.00 ug/L 08/12/21 17:05 11,2-Dichloroethane 32.5 1.00 ug/L 08/12/21 17:05 11,1-Dichloroethene 30.5 1.00 ug/L 08/12/21 17:05 11,2-Dichloropropane ND 200 ug/L 08/12/21 17:05 11,4-Dioxane ND 1.00 ug/L 08/12/21 17:05 1EthylbenzeneND 5.00 ug/L 08/12/21 17:05 12-Hexanone ND 1.00 ug/L 08/12/21 17:05 1IsopropylbenzeneND 5.00 ug/L 08/12/21 17:05 1Methyl acetate ND 1.00 ug/L 08/12/21 17:05 1MethylcyclohexaneND 2.00 ug/L 08/12/21 17:05 1Methylene Chloride ND 5.00 ug/L 08/12/21 17:05 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/12/21 17:05 1Methyl tert-butyl ether ND 2.00 ug/L 08/12/21 17:05 1m-Xylene & p-Xylene ND 1.00 ug/L 08/12/21 17:05 1o-Xylene ND 1.00 ug/L 08/12/21 17:05 1StyreneND 1.00 ug/L 08/12/21 17:05 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/12/21 17:05 1Tetrachloroethene13.9 1.00 ug/L 08/12/21 17:05 1TolueneND 1.00 ug/L 08/12/21 17:05 1trans-1,2-Dichloroethene 28.5 3.00 ug/L 08/12/21 17:05 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/12/21 17:05 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/12/21 17:05 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/12/21 17:05 11,1,1-Trichloroethane ND 1.00 ug/L 08/12/21 17:05 11,1,2-Trichloroethane ND 2.00 ug/L 08/12/21 17:05 1TrichlorofluoromethaneND 3.00 ug/L 08/12/21 17:05 11,1,2-Trichlorotrifluoroethane ND Eurofins Denver Page 68 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-16Client Sample ID: MW-9I Matrix: WaterDate Collected: 07/30/21 09:10 Date Received: 07/31/21 09:35 RL MDL Vinyl chloride 17.5 1.00 ug/L 08/12/21 17:05 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4-Bromofluorobenzene (Surr)101 78 -120 08/12/21 17:05 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)101 08/12/21 17:05 177-120 1,2-Dichloroethane-d4 (Surr)101 08/12/21 17:05 170-127 Toluene-d8 (Surr)99 08/12/21 17:05 180-125 Lab Sample ID: 280-151378-18Client Sample ID: MW-10I Matrix: WaterDate Collected: 07/30/21 09:50 Date Received: 07/31/21 09:35 RL MDL Acetone ND 100 ug/L 08/04/21 14:34 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 10.0 ug/L 08/04/21 14:34 10BenzeneND *1 10.0 ug/L 08/04/21 14:34 10BromoformND 20.0 ug/L 08/04/21 14:34 10BromomethaneND 60.0 ug/L 08/04/21 14:34 102-Butanone (MEK)ND 20.0 ug/L 08/04/21 14:34 10Carbon disulfide ND *1 10.0 ug/L 08/04/21 14:34 10Carbon tetrachloride ND *1 10.0 ug/L 08/04/21 14:34 10ChlorobenzeneND 10.0 ug/L 08/04/21 14:34 10ChlorobromomethaneND 10.0 ug/L 08/04/21 14:34 10ChlorodibromomethaneND 20.0 ug/L 08/04/21 14:34 10ChloroethaneND 10.0 ug/L 08/04/21 14:34 10ChloroformND 20.0 ug/L 08/04/21 14:34 10ChloromethaneND 10.0 ug/L 08/04/21 14:34 10cis-1,2-Dichloroethene 699 10.0 ug/L 08/04/21 14:34 10cis-1,3-Dichloropropene ND 20.0 ug/L 08/04/21 14:34 10CyclohexaneND *1 50.0 ug/L 08/04/21 14:34 101,2-Dibromo-3-Chloropropane ND 10.0 ug/L 08/04/21 14:34 101,2-Dibromoethane ND 10.0 ug/L 08/04/21 14:34 101,2-Dichlorobenzene ND 10.0 ug/L 08/04/21 14:34 101,3-Dichlorobenzene ND 10.0 ug/L 08/04/21 14:34 101,4-Dichlorobenzene ND 10.0 ug/L 08/04/21 14:34 10DichlorobromomethaneND *1 20.0 ug/L 08/04/21 14:34 10DichlorodifluoromethaneND *1 10.0 ug/L 08/04/21 14:34 101,1-Dichloroethane ND 10.0 ug/L 08/04/21 14:34 101,2-Dichloroethane ND 10.0 ug/L 08/04/21 14:34 101,1-Dichloroethene 14.3 *1 10.0 ug/L 08/04/21 14:34 101,2-Dichloropropane ND 2000 ug/L 08/04/21 14:34 101,4-Dioxane ND 10.0 ug/L 08/04/21 14:34 10EthylbenzeneND 50.0 ug/L 08/04/21 14:34 102-Hexanone ND 10.0 ug/L 08/04/21 14:34 10IsopropylbenzeneND 50.0 ug/L 08/04/21 14:34 10Methyl acetate ND 10.0 ug/L 08/04/21 14:34 10MethylcyclohexaneND *1 20.0 ug/L 08/04/21 14:34 10Methylene Chloride ND 50.0 ug/L 08/04/21 14:34 104-Methyl-2-pentanone (MIBK)ND 50.0 ug/L 08/04/21 14:34 10Methyl tert-butyl ether ND 20.0 ug/L 08/04/21 14:34 10m-Xylene & p-Xylene ND 10.0 ug/L 08/04/21 14:34 10o-Xylene ND Eurofins Denver Page 69 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-18Client Sample ID: MW-10I Matrix: WaterDate Collected: 07/30/21 09:50 Date Received: 07/31/21 09:35 RL MDL Styrene ND 10.0 ug/L 08/04/21 14:34 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 10.0 ug/L 08/04/21 14:34 101,1,2,2-Tetrachloroethane ND 10.0 ug/L 08/04/21 14:34 10TetrachloroetheneND 10.0 ug/L 08/04/21 14:34 10TolueneND 10.0 ug/L 08/04/21 14:34 10trans-1,2-Dichloroethene 33.9 30.0 ug/L 08/04/21 14:34 10trans-1,3-Dichloropropene ND 10.0 ug/L 08/04/21 14:34 101,2,3-Trichlorobenzene ND 10.0 ug/L 08/04/21 14:34 101,2,4-Trichlorobenzene ND 10.0 ug/L 08/04/21 14:34 101,1,1-Trichloroethane ND *1 10.0 ug/L 08/04/21 14:34 101,1,2-Trichloroethane ND 10.0 ug/L 08/04/21 14:34 10Trichloroethene40.7 20.0 ug/L 08/04/21 14:34 10TrichlorofluoromethaneND 30.0 ug/L 08/04/21 14:34 101,1,2-Trichlorotrifluoroethane ND *1 10.0 ug/L 08/04/21 14:34 10Vinyl chloride ND 4-Bromofluorobenzene (Surr)109 78 -120 08/04/21 14:34 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)100 08/04/21 14:34 1077-120 1,2-Dichloroethane-d4 (Surr)104 08/04/21 14:34 1070-127 Toluene-d8 (Surr)101 08/04/21 14:34 1080-125 Lab Sample ID: 280-151378-19Client Sample ID: MW-7 Matrix: WaterDate Collected: 07/30/21 10:40 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/12/21 17:28 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/12/21 17:28 1BenzeneND 1.00 ug/L 08/12/21 17:28 1BromoformND 2.00 ug/L 08/12/21 17:28 1BromomethaneND 6.00 ug/L 08/12/21 17:28 12-Butanone (MEK)ND 2.00 ug/L 08/12/21 17:28 1Carbon disulfide ND 1.00 ug/L 08/12/21 17:28 1Carbon tetrachloride ND 1.00 ug/L 08/12/21 17:28 1ChlorobenzeneND 1.00 ug/L 08/12/21 17:28 1ChlorobromomethaneND 1.00 ug/L 08/12/21 17:28 1ChlorodibromomethaneND 2.00 ug/L 08/12/21 17:28 1ChloroethaneND 1.00 ug/L 08/12/21 17:28 1ChloroformND 2.00 ug/L 08/12/21 17:28 1ChloromethaneND 1.00 ug/L 08/12/21 17:28 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/12/21 17:28 1CyclohexaneND 5.00 ug/L 08/12/21 17:28 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/12/21 17:28 11,2-Dibromoethane ND 1.00 ug/L 08/12/21 17:28 11,2-Dichlorobenzene ND 1.00 ug/L 08/12/21 17:28 11,3-Dichlorobenzene ND 1.00 ug/L 08/12/21 17:28 11,4-Dichlorobenzene ND 1.00 ug/L 08/12/21 17:28 1DichlorobromomethaneND 2.00 ug/L 08/12/21 17:28 1DichlorodifluoromethaneND 1.00 ug/L 08/12/21 17:28 11,1-Dichloroethane ND 1.00 ug/L 08/12/21 17:28 11,2-Dichloroethane ND 1.00 ug/L 08/12/21 17:28 11,1-Dichloroethene ND Eurofins Denver Page 70 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-19Client Sample ID: MW-7 Matrix: WaterDate Collected: 07/30/21 10:40 Date Received: 07/31/21 09:35 RL MDL 1,2-Dichloropropane ND 1.00 ug/L 08/12/21 17:28 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 200 ug/L 08/12/21 17:28 11,4-Dioxane ND 1.00 ug/L 08/12/21 17:28 1EthylbenzeneND 5.00 ug/L 08/12/21 17:28 12-Hexanone ND 1.00 ug/L 08/12/21 17:28 1IsopropylbenzeneND 5.00 ug/L 08/12/21 17:28 1Methyl acetate ND 1.00 ug/L 08/12/21 17:28 1MethylcyclohexaneND 2.00 ug/L 08/12/21 17:28 1Methylene Chloride ND 5.00 ug/L 08/12/21 17:28 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/12/21 17:28 1Methyl tert-butyl ether ND 2.00 ug/L 08/12/21 17:28 1m-Xylene & p-Xylene ND 1.00 ug/L 08/12/21 17:28 1o-Xylene ND 1.00 ug/L 08/12/21 17:28 1StyreneND 1.00 ug/L 08/12/21 17:28 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/12/21 17:28 1TetrachloroetheneND 1.00 ug/L 08/12/21 17:28 1TolueneND 1.00 ug/L 08/12/21 17:28 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/12/21 17:28 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/12/21 17:28 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/12/21 17:28 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/12/21 17:28 11,1,1-Trichloroethane ND 1.00 ug/L 08/12/21 17:28 11,1,2-Trichloroethane ND 1.00 ug/L 08/12/21 17:28 1TrichloroetheneND 2.00 ug/L 08/12/21 17:28 1TrichlorofluoromethaneND 3.00 ug/L 08/12/21 17:28 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/12/21 17:28 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)101 78 -120 08/12/21 17:28 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)100 08/12/21 17:28 177-120 1,2-Dichloroethane-d4 (Surr)102 08/12/21 17:28 170-127 Toluene-d8 (Surr)99 08/12/21 17:28 180-125 Lab Sample ID: 280-151378-20Client Sample ID: MW-7I Matrix: WaterDate Collected: 07/30/21 10:55 Date Received: 07/31/21 09:35 RL MDL Acetone ND 10.0 ug/L 08/12/21 17:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/12/21 17:51 1BenzeneND 1.00 ug/L 08/12/21 17:51 1BromoformND 2.00 ug/L 08/12/21 17:51 1BromomethaneND 6.00 ug/L 08/12/21 17:51 12-Butanone (MEK)ND 2.00 ug/L 08/12/21 17:51 1Carbon disulfide ND 1.00 ug/L 08/12/21 17:51 1Carbon tetrachloride ND 1.00 ug/L 08/12/21 17:51 1ChlorobenzeneND 1.00 ug/L 08/12/21 17:51 1ChlorobromomethaneND 1.00 ug/L 08/12/21 17:51 1ChlorodibromomethaneND 2.00 ug/L 08/12/21 17:51 1ChloroethaneND 1.00 ug/L 08/12/21 17:51 1ChloroformND 2.00 ug/L 08/12/21 17:51 1ChloromethaneND Eurofins Denver Page 71 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151378-20Client Sample ID: MW-7I Matrix: WaterDate Collected: 07/30/21 10:55 Date Received: 07/31/21 09:35 RL MDL cis-1,2-Dichloroethene ND 1.00 ug/L 08/12/21 17:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/12/21 17:51 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/12/21 17:51 1CyclohexaneND 5.00 ug/L 08/12/21 17:51 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/12/21 17:51 11,2-Dibromoethane ND 1.00 ug/L 08/12/21 17:51 11,2-Dichlorobenzene ND 1.00 ug/L 08/12/21 17:51 11,3-Dichlorobenzene ND 1.00 ug/L 08/12/21 17:51 11,4-Dichlorobenzene ND 1.00 ug/L 08/12/21 17:51 1DichlorobromomethaneND 2.00 ug/L 08/12/21 17:51 1DichlorodifluoromethaneND 1.00 ug/L 08/12/21 17:51 11,1-Dichloroethane ND 1.00 ug/L 08/12/21 17:51 11,2-Dichloroethane ND 1.00 ug/L 08/12/21 17:51 11,1-Dichloroethene ND 1.00 ug/L 08/12/21 17:51 11,2-Dichloropropane ND 200 ug/L 08/12/21 17:51 11,4-Dioxane ND 1.00 ug/L 08/12/21 17:51 1EthylbenzeneND 5.00 ug/L 08/12/21 17:51 12-Hexanone ND 1.00 ug/L 08/12/21 17:51 1IsopropylbenzeneND 5.00 ug/L 08/12/21 17:51 1Methyl acetate ND 1.00 ug/L 08/12/21 17:51 1MethylcyclohexaneND 2.00 ug/L 08/12/21 17:51 1Methylene Chloride ND 5.00 ug/L 08/12/21 17:51 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/12/21 17:51 1Methyl tert-butyl ether ND 2.00 ug/L 08/12/21 17:51 1m-Xylene & p-Xylene ND 1.00 ug/L 08/12/21 17:51 1o-Xylene ND 1.00 ug/L 08/12/21 17:51 1StyreneND 1.00 ug/L 08/12/21 17:51 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/12/21 17:51 1TetrachloroetheneND 1.00 ug/L 08/12/21 17:51 1TolueneND 1.00 ug/L 08/12/21 17:51 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/12/21 17:51 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/12/21 17:51 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/12/21 17:51 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/12/21 17:51 11,1,1-Trichloroethane ND 1.00 ug/L 08/12/21 17:51 11,1,2-Trichloroethane ND 1.00 ug/L 08/12/21 17:51 1TrichloroetheneND 2.00 ug/L 08/12/21 17:51 1TrichlorofluoromethaneND 3.00 ug/L 08/12/21 17:51 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/12/21 17:51 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)100 78 -120 08/12/21 17:51 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)99 08/12/21 17:51 177-120 1,2-Dichloroethane-d4 (Surr)102 08/12/21 17:51 170-127 Toluene-d8 (Surr)99 08/12/21 17:51 180-125 Eurofins Denver Page 72 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151937-1Client Sample ID: MW-8 Matrix: WaterDate Collected: 08/12/21 11:20 Date Received: 08/17/21 09:30 RL MDL Acetone ND 40.0 ug/L 08/20/21 12:05 4 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4.00 ug/L 08/20/21 12:05 4BenzeneND 4.00 ug/L 08/20/21 12:05 4BromoformND 8.00 ug/L 08/20/21 12:05 4BromomethaneND 24.0 ug/L 08/20/21 12:05 42-Butanone (MEK)ND 8.00 ug/L 08/20/21 12:05 4Carbon disulfide ND 4.00 ug/L 08/20/21 12:05 4Carbon tetrachloride ND 4.00 ug/L 08/20/21 12:05 4ChlorobenzeneND 4.00 ug/L 08/20/21 12:05 4ChlorobromomethaneND 4.00 ug/L 08/20/21 12:05 4ChlorodibromomethaneND 8.00 ug/L 08/20/21 12:05 4ChloroethaneND 4.00 ug/L 08/20/21 12:05 4ChloroformND 8.00 ug/L 08/20/21 12:05 4ChloromethaneND 4.00 ug/L 08/20/21 12:05 4cis-1,2-Dichloroethene 267 4.00 ug/L 08/20/21 12:05 4cis-1,3-Dichloropropene ND 8.00 ug/L 08/20/21 12:05 4CyclohexaneND 20.0 ug/L 08/20/21 12:05 41,2-Dibromo-3-Chloropropane ND 4.00 ug/L 08/20/21 12:05 41,2-Dibromoethane ND 4.00 ug/L 08/20/21 12:05 41,2-Dichlorobenzene ND 4.00 ug/L 08/20/21 12:05 41,3-Dichlorobenzene ND 4.00 ug/L 08/20/21 12:05 41,4-Dichlorobenzene ND 4.00 ug/L 08/20/21 12:05 4DichlorobromomethaneND 8.00 ug/L 08/20/21 12:05 4DichlorodifluoromethaneND 4.00 ug/L 08/20/21 12:05 41,1-Dichloroethane 40.1 4.00 ug/L 08/20/21 12:05 41,2-Dichloroethane 6.39 4.00 ug/L 08/20/21 12:05 41,1-Dichloroethene 13.0 4.00 ug/L 08/20/21 12:05 41,2-Dichloropropane ND 800 ug/L 08/20/21 12:05 41,4-Dioxane ND 4.00 ug/L 08/20/21 12:05 4EthylbenzeneND 20.0 ug/L 08/20/21 12:05 42-Hexanone ND 4.00 ug/L 08/20/21 12:05 4IsopropylbenzeneND 20.0 ug/L 08/20/21 12:05 4Methyl acetate ND 4.00 ug/L 08/20/21 12:05 4MethylcyclohexaneND 8.00 ug/L 08/20/21 12:05 4Methylene Chloride ND 20.0 ug/L 08/20/21 12:05 44-Methyl-2-pentanone (MIBK)ND 20.0 ug/L 08/20/21 12:05 4Methyl tert-butyl ether ND 8.00 ug/L 08/20/21 12:05 4m-Xylene & p-Xylene ND 4.00 ug/L 08/20/21 12:05 4o-Xylene ND 4.00 ug/L 08/20/21 12:05 4StyreneND 4.00 ug/L 08/20/21 12:05 41,1,2,2-Tetrachloroethane ND 4.00 ug/L 08/20/21 12:05 4Tetrachloroethene34.1 4.00 ug/L 08/20/21 12:05 4TolueneND 4.00 ug/L 08/20/21 12:05 4trans-1,2-Dichloroethene ND 12.0 ug/L 08/20/21 12:05 4trans-1,3-Dichloropropene ND 4.00 ug/L 08/20/21 12:05 41,2,3-Trichlorobenzene ND 4.00 ug/L 08/20/21 12:05 41,2,4-Trichlorobenzene ND 4.00 ug/L 08/20/21 12:05 41,1,1-Trichloroethane ND 4.00 ug/L 08/20/21 12:05 41,1,2-Trichloroethane ND 4.00 ug/L 08/20/21 12:05 4Trichloroethene162 Eurofins Denver Page 73 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151937-1Client Sample ID: MW-8 Matrix: WaterDate Collected: 08/12/21 11:20 Date Received: 08/17/21 09:30 RL MDL Trichlorofluoromethane ND 8.00 ug/L 08/20/21 12:05 4 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 12.0 ug/L 08/20/21 12:05 41,1,2-Trichlorotrifluoroethane ND 4.00 ug/L 08/20/21 12:05 4Vinyl chloride 31.4 4-Bromofluorobenzene (Surr)101 78 -120 08/20/21 12:05 4 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)97 08/20/21 12:05 477-120 1,2-Dichloroethane-d4 (Surr)100 08/20/21 12:05 470-127 Toluene-d8 (Surr)101 08/20/21 12:05 480-125 Lab Sample ID: 280-151937-2Client Sample ID: MW-8-c Matrix: WaterDate Collected: 08/12/21 11:20 Date Received: 08/17/21 09:30 RL MDL Acetone ND 10.0 ug/L 08/20/21 12:26 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/20/21 12:26 1BenzeneND 1.00 ug/L 08/20/21 12:26 1BromoformND 2.00 ug/L 08/20/21 12:26 1BromomethaneND 6.00 ug/L 08/20/21 12:26 12-Butanone (MEK)ND 2.00 ug/L 08/20/21 12:26 1Carbon disulfide ND 1.00 ug/L 08/20/21 12:26 1Carbon tetrachloride ND 1.00 ug/L 08/20/21 12:26 1ChlorobenzeneND 1.00 ug/L 08/20/21 12:26 1ChlorobromomethaneND 1.00 ug/L 08/20/21 12:26 1ChlorodibromomethaneND 2.00 ug/L 08/20/21 12:26 1ChloroethaneND 1.00 ug/L 08/20/21 12:26 1ChloroformND 2.00 ug/L 08/20/21 12:26 1ChloromethaneND 1.00 ug/L 08/20/21 12:26 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/20/21 12:26 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/20/21 12:26 1CyclohexaneND 5.00 ug/L 08/20/21 12:26 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/20/21 12:26 11,2-Dibromoethane ND 1.00 ug/L 08/20/21 12:26 11,2-Dichlorobenzene ND 1.00 ug/L 08/20/21 12:26 11,3-Dichlorobenzene ND 1.00 ug/L 08/20/21 12:26 11,4-Dichlorobenzene ND 1.00 ug/L 08/20/21 12:26 1DichlorobromomethaneND 2.00 ug/L 08/20/21 12:26 1DichlorodifluoromethaneND 1.00 ug/L 08/20/21 12:26 11,1-Dichloroethane ND 1.00 ug/L 08/20/21 12:26 11,2-Dichloroethane ND 1.00 ug/L 08/20/21 12:26 11,1-Dichloroethene ND 1.00 ug/L 08/20/21 12:26 11,2-Dichloropropane ND 200 ug/L 08/20/21 12:26 11,4-Dioxane ND 1.00 ug/L 08/20/21 12:26 1EthylbenzeneND 5.00 ug/L 08/20/21 12:26 12-Hexanone ND 1.00 ug/L 08/20/21 12:26 1IsopropylbenzeneND 5.00 ug/L 08/20/21 12:26 1Methyl acetate ND 1.00 ug/L 08/20/21 12:26 1MethylcyclohexaneND 2.00 ug/L 08/20/21 12:26 1Methylene Chloride ND 5.00 ug/L 08/20/21 12:26 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/20/21 12:26 1Methyl tert-butyl ether ND Eurofins Denver Page 74 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151937-2Client Sample ID: MW-8-c Matrix: WaterDate Collected: 08/12/21 11:20 Date Received: 08/17/21 09:30 RL MDL m-Xylene & p-Xylene ND 2.00 ug/L 08/20/21 12:26 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/20/21 12:26 1o-Xylene ND 1.00 ug/L 08/20/21 12:26 1StyreneND 1.00 ug/L 08/20/21 12:26 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/20/21 12:26 1TetrachloroetheneND 1.00 ug/L 08/20/21 12:26 1TolueneND 1.00 ug/L 08/20/21 12:26 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/20/21 12:26 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/20/21 12:26 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/20/21 12:26 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/20/21 12:26 11,1,1-Trichloroethane ND 1.00 ug/L 08/20/21 12:26 11,1,2-Trichloroethane ND 1.00 ug/L 08/20/21 12:26 1TrichloroetheneND 2.00 ug/L 08/20/21 12:26 1TrichlorofluoromethaneND 3.00 ug/L 08/20/21 12:26 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/20/21 12:26 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)100 78 -120 08/20/21 12:26 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)95 08/20/21 12:26 177-120 1,2-Dichloroethane-d4 (Surr)102 08/20/21 12:26 170-127 Toluene-d8 (Surr)102 08/20/21 12:26 180-125 Lab Sample ID: 280-151937-3Client Sample ID: MW-10 Matrix: WaterDate Collected: 08/12/21 10:05 Date Received: 08/17/21 09:30 RL MDL Acetone ND 50.0 ug/L 08/20/21 12:47 5 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 08/20/21 12:47 5BenzeneND 5.00 ug/L 08/20/21 12:47 5BromoformND 10.0 ug/L 08/20/21 12:47 5BromomethaneND 30.0 ug/L 08/20/21 12:47 52-Butanone (MEK)ND 10.0 ug/L 08/20/21 12:47 5Carbon disulfide ND 5.00 ug/L 08/20/21 12:47 5Carbon tetrachloride ND 5.00 ug/L 08/20/21 12:47 5ChlorobenzeneND 5.00 ug/L 08/20/21 12:47 5ChlorobromomethaneND 5.00 ug/L 08/20/21 12:47 5ChlorodibromomethaneND 10.0 ug/L 08/20/21 12:47 5ChloroethaneND 5.00 ug/L 08/20/21 12:47 5ChloroformND 10.0 ug/L 08/20/21 12:47 5ChloromethaneND 5.00 ug/L 08/20/21 12:47 5cis-1,2-Dichloroethene 434 5.00 ug/L 08/20/21 12:47 5cis-1,3-Dichloropropene ND 10.0 ug/L 08/20/21 12:47 5CyclohexaneND 25.0 ug/L 08/20/21 12:47 51,2-Dibromo-3-Chloropropane ND 5.00 ug/L 08/20/21 12:47 51,2-Dibromoethane ND 5.00 ug/L 08/20/21 12:47 51,2-Dichlorobenzene ND 5.00 ug/L 08/20/21 12:47 51,3-Dichlorobenzene ND 5.00 ug/L 08/20/21 12:47 51,4-Dichlorobenzene ND 5.00 ug/L 08/20/21 12:47 5DichlorobromomethaneND 10.0 ug/L 08/20/21 12:47 5DichlorodifluoromethaneND Eurofins Denver Page 75 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151937-3Client Sample ID: MW-10 Matrix: WaterDate Collected: 08/12/21 10:05 Date Received: 08/17/21 09:30 RL MDL 1,1-Dichloroethane ND 5.00 ug/L 08/20/21 12:47 5 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 08/20/21 12:47 51,2-Dichloroethane ND 5.00 ug/L 08/20/21 12:47 51,1-Dichloroethene 6.18 5.00 ug/L 08/20/21 12:47 51,2-Dichloropropane ND 1000 ug/L 08/20/21 12:47 51,4-Dioxane ND 5.00 ug/L 08/20/21 12:47 5EthylbenzeneND 25.0 ug/L 08/20/21 12:47 52-Hexanone ND 5.00 ug/L 08/20/21 12:47 5IsopropylbenzeneND 25.0 ug/L 08/20/21 12:47 5Methyl acetate ND 5.00 ug/L 08/20/21 12:47 5MethylcyclohexaneND 10.0 ug/L 08/20/21 12:47 5Methylene Chloride ND 25.0 ug/L 08/20/21 12:47 54-Methyl-2-pentanone (MIBK)ND 25.0 ug/L 08/20/21 12:47 5Methyl tert-butyl ether ND 10.0 ug/L 08/20/21 12:47 5m-Xylene & p-Xylene ND 5.00 ug/L 08/20/21 12:47 5o-Xylene ND 5.00 ug/L 08/20/21 12:47 5StyreneND 5.00 ug/L 08/20/21 12:47 51,1,2,2-Tetrachloroethane ND 5.00 ug/L 08/20/21 12:47 5TetrachloroetheneND 5.00 ug/L 08/20/21 12:47 5TolueneND 5.00 ug/L 08/20/21 12:47 5trans-1,2-Dichloroethene 13.8 15.0 ug/L 08/20/21 12:47 5trans-1,3-Dichloropropene ND 5.00 ug/L 08/20/21 12:47 51,2,3-Trichlorobenzene ND 5.00 ug/L 08/20/21 12:47 51,2,4-Trichlorobenzene ND 5.00 ug/L 08/20/21 12:47 51,1,1-Trichloroethane ND 5.00 ug/L 08/20/21 12:47 51,1,2-Trichloroethane ND 5.00 ug/L 08/20/21 12:47 5TrichloroetheneND 10.0 ug/L 08/20/21 12:47 5TrichlorofluoromethaneND 15.0 ug/L 08/20/21 12:47 51,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 08/20/21 12:47 5Vinyl chloride ND 4-Bromofluorobenzene (Surr)100 78 -120 08/20/21 12:47 5 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)98 08/20/21 12:47 577-120 1,2-Dichloroethane-d4 (Surr)104 08/20/21 12:47 570-127 Toluene-d8 (Surr)101 08/20/21 12:47 580-125 Lab Sample ID: 280-151937-4Client Sample ID: MW-19I Matrix: WaterDate Collected: 08/12/21 09:05 Date Received: 08/17/21 09:30 RL MDL Acetone ND 20.0 ug/L 08/20/21 13:51 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.00 ug/L 08/20/21 13:51 2BenzeneND 2.00 ug/L 08/20/21 13:51 2BromoformND 4.00 ug/L 08/20/21 13:51 2BromomethaneND 12.0 ug/L 08/20/21 13:51 22-Butanone (MEK)ND 4.00 ug/L 08/20/21 13:51 2Carbon disulfide ND 2.00 ug/L 08/20/21 13:51 2Carbon tetrachloride ND 2.00 ug/L 08/20/21 13:51 2ChlorobenzeneND 2.00 ug/L 08/20/21 13:51 2ChlorobromomethaneND 2.00 ug/L 08/20/21 13:51 2ChlorodibromomethaneND Eurofins Denver Page 76 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151937-4Client Sample ID: MW-19I Matrix: WaterDate Collected: 08/12/21 09:05 Date Received: 08/17/21 09:30 RL MDL Chloroethane ND 4.00 ug/L 08/20/21 13:51 2 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 2.00 ug/L 08/20/21 13:51 2ChloroformND 4.00 ug/L 08/20/21 13:51 2ChloromethaneND 2.00 ug/L 08/20/21 13:51 2cis-1,2-Dichloroethene 135 2.00 ug/L 08/20/21 13:51 2cis-1,3-Dichloropropene ND 4.00 ug/L 08/20/21 13:51 2CyclohexaneND 10.0 ug/L 08/20/21 13:51 21,2-Dibromo-3-Chloropropane ND 2.00 ug/L 08/20/21 13:51 21,2-Dibromoethane ND 2.00 ug/L 08/20/21 13:51 21,2-Dichlorobenzene ND 2.00 ug/L 08/20/21 13:51 21,3-Dichlorobenzene ND 2.00 ug/L 08/20/21 13:51 21,4-Dichlorobenzene ND 2.00 ug/L 08/20/21 13:51 2DichlorobromomethaneND 4.00 ug/L 08/20/21 13:51 2DichlorodifluoromethaneND 2.00 ug/L 08/20/21 13:51 21,1-Dichloroethane 31.2 2.00 ug/L 08/20/21 13:51 21,2-Dichloroethane 7.78 2.00 ug/L 08/20/21 13:51 21,1-Dichloroethene 27.1 2.00 ug/L 08/20/21 13:51 21,2-Dichloropropane ND 400 ug/L 08/20/21 13:51 21,4-Dioxane ND 2.00 ug/L 08/20/21 13:51 2EthylbenzeneND 10.0 ug/L 08/20/21 13:51 22-Hexanone ND 2.00 ug/L 08/20/21 13:51 2IsopropylbenzeneND 10.0 ug/L 08/20/21 13:51 2Methyl acetate ND 2.00 ug/L 08/20/21 13:51 2MethylcyclohexaneND 4.00 ug/L 08/20/21 13:51 2Methylene Chloride ND 10.0 ug/L 08/20/21 13:51 24-Methyl-2-pentanone (MIBK)ND 10.0 ug/L 08/20/21 13:51 2Methyl tert-butyl ether ND 4.00 ug/L 08/20/21 13:51 2m-Xylene & p-Xylene ND 2.00 ug/L 08/20/21 13:51 2o-Xylene ND 2.00 ug/L 08/20/21 13:51 2StyreneND 2.00 ug/L 08/20/21 13:51 21,1,2,2-Tetrachloroethane ND 2.00 ug/L 08/20/21 13:51 2Tetrachloroethene17.3 2.00 ug/L 08/20/21 13:51 2TolueneND 2.00 ug/L 08/20/21 13:51 2trans-1,2-Dichloroethene 4.76 6.00 ug/L 08/20/21 13:51 2trans-1,3-Dichloropropene ND 2.00 ug/L 08/20/21 13:51 21,2,3-Trichlorobenzene ND 2.00 ug/L 08/20/21 13:51 21,2,4-Trichlorobenzene ND 2.00 ug/L 08/20/21 13:51 21,1,1-Trichloroethane ND 2.00 ug/L 08/20/21 13:51 21,1,2-Trichloroethane ND 2.00 ug/L 08/20/21 13:51 2Trichloroethene82.2 4.00 ug/L 08/20/21 13:51 2TrichlorofluoromethaneND 6.00 ug/L 08/20/21 13:51 21,1,2-Trichlorotrifluoroethane ND 2.00 ug/L 08/20/21 13:51 2Vinyl chloride 18.5 4-Bromofluorobenzene (Surr)101 78 -120 08/20/21 13:51 2 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)98 08/20/21 13:51 277-120 1,2-Dichloroethane-d4 (Surr)101 08/20/21 13:51 270-127 Toluene-d8 (Surr)102 08/20/21 13:51 280-125 Eurofins Denver Page 77 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Lab Sample ID: 280-151937-5Client Sample ID: TRIP BLANK Matrix: WaterDate Collected: 08/12/21 09:05 Date Received: 08/17/21 09:30 RL MDL Acetone ND 10.0 ug/L 08/20/21 11:44 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1.00 ug/L 08/20/21 11:44 1BenzeneND 1.00 ug/L 08/20/21 11:44 1BromoformND 2.00 ug/L 08/20/21 11:44 1BromomethaneND 6.00 ug/L 08/20/21 11:44 12-Butanone (MEK)ND 2.00 ug/L 08/20/21 11:44 1Carbon disulfide ND 1.00 ug/L 08/20/21 11:44 1Carbon tetrachloride ND 1.00 ug/L 08/20/21 11:44 1ChlorobenzeneND 1.00 ug/L 08/20/21 11:44 1ChlorobromomethaneND 1.00 ug/L 08/20/21 11:44 1ChlorodibromomethaneND 2.00 ug/L 08/20/21 11:44 1ChloroethaneND 1.00 ug/L 08/20/21 11:44 1ChloroformND 2.00 ug/L 08/20/21 11:44 1ChloromethaneND 1.00 ug/L 08/20/21 11:44 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/20/21 11:44 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/20/21 11:44 1CyclohexaneND 5.00 ug/L 08/20/21 11:44 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/20/21 11:44 11,2-Dibromoethane ND 1.00 ug/L 08/20/21 11:44 11,2-Dichlorobenzene ND 1.00 ug/L 08/20/21 11:44 11,3-Dichlorobenzene ND 1.00 ug/L 08/20/21 11:44 11,4-Dichlorobenzene ND 1.00 ug/L 08/20/21 11:44 1DichlorobromomethaneND 2.00 ug/L 08/20/21 11:44 1DichlorodifluoromethaneND 1.00 ug/L 08/20/21 11:44 11,1-Dichloroethane ND 1.00 ug/L 08/20/21 11:44 11,2-Dichloroethane ND 1.00 ug/L 08/20/21 11:44 11,1-Dichloroethene ND 1.00 ug/L 08/20/21 11:44 11,2-Dichloropropane ND 200 ug/L 08/20/21 11:44 11,4-Dioxane ND 1.00 ug/L 08/20/21 11:44 1EthylbenzeneND 5.00 ug/L 08/20/21 11:44 12-Hexanone ND 1.00 ug/L 08/20/21 11:44 1IsopropylbenzeneND 5.00 ug/L 08/20/21 11:44 1Methyl acetate ND 1.00 ug/L 08/20/21 11:44 1MethylcyclohexaneND 2.00 ug/L 08/20/21 11:44 1Methylene Chloride ND 5.00 ug/L 08/20/21 11:44 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 08/20/21 11:44 1Methyl tert-butyl ether ND 2.00 ug/L 08/20/21 11:44 1m-Xylene & p-Xylene ND 1.00 ug/L 08/20/21 11:44 1o-Xylene ND 1.00 ug/L 08/20/21 11:44 1StyreneND 1.00 ug/L 08/20/21 11:44 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/20/21 11:44 1TetrachloroetheneND 1.00 ug/L 08/20/21 11:44 1TolueneND 1.00 ug/L 08/20/21 11:44 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/20/21 11:44 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/20/21 11:44 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/20/21 11:44 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/20/21 11:44 11,1,1-Trichloroethane ND 1.00 ug/L 08/20/21 11:44 11,1,2-Trichloroethane ND 1.00 ug/L 08/20/21 11:44 1TrichloroetheneND Eurofins Denver Page 78 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Lab Sample ID: 280-151937-5Client Sample ID: TRIP BLANK Matrix: WaterDate Collected: 08/12/21 09:05 Date Received: 08/17/21 09:30 RL MDL Trichlorofluoromethane ND 2.00 ug/L 08/20/21 11:44 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 3.00 ug/L 08/20/21 11:44 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/20/21 11:44 1Vinyl chloride ND 4-Bromofluorobenzene (Surr)101 78 -120 08/20/21 11:44 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)96 08/20/21 11:44 177-120 1,2-Dichloroethane-d4 (Surr)100 08/20/21 11:44 170-127 Toluene-d8 (Surr)102 08/20/21 11:44 180-125 Method: 8260B - Volatile Organic Compounds (GC/MS) - DL Lab Sample ID: 280-151322-13Client Sample ID: MW-12I Matrix: WaterDate Collected: 07/28/21 10:35 Date Received: 07/29/21 09:15 RL MDL cis-1,2-Dichloroethene 245 10.0 ug/L 08/02/21 18:09 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4-Bromofluorobenzene (Surr)107 78 -120 08/02/21 18:09 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)94 08/02/21 18:09 1077-120 1,2-Dichloroethane-d4 (Surr)100 08/02/21 18:09 1070-127 Toluene-d8 (Surr)103 08/02/21 18:09 1080-125 Lab Sample ID: 280-151322-17Client Sample ID: MW-14I Matrix: WaterDate Collected: 07/27/21 10:25 Date Received: 07/29/21 09:15 RL MDL cis-1,2-Dichloroethene 285 10.0 ug/L 08/02/21 18:32 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4-Bromofluorobenzene (Surr)107 78 -120 08/02/21 18:32 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)94 08/02/21 18:32 1077-120 1,2-Dichloroethane-d4 (Surr)102 08/02/21 18:32 1070-127 Toluene-d8 (Surr)103 08/02/21 18:32 1080-125 Lab Sample ID: 280-151322-20Client Sample ID: MW-15I Matrix: WaterDate Collected: 07/28/21 08:55 Date Received: 07/29/21 09:15 RL MDL cis-1,2-Dichloroethene 367 10.0 ug/L 08/02/21 18:55 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 18:55 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)94 08/02/21 18:55 1077-120 1,2-Dichloroethane-d4 (Surr)99 08/02/21 18:55 1070-127 Toluene-d8 (Surr)104 08/02/21 18:55 1080-125 Eurofins Denver Page 79 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) - DL Lab Sample ID: 280-151378-16Client Sample ID: MW-9I Matrix: WaterDate Collected: 07/30/21 09:10 Date Received: 07/31/21 09:35 RL MDL cis-1,2-Dichloroethene 1380 20.0 ug/L 08/13/21 16:04 20 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 20.0 ug/L 08/13/21 16:04 20Trichloroethene212 4-Bromofluorobenzene (Surr)100 78 -120 08/13/21 16:04 20 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)99 08/13/21 16:04 2077-120 1,2-Dichloroethane-d4 (Surr)99 08/13/21 16:04 2070-127 Toluene-d8 (Surr)99 08/13/21 16:04 2080-125 Method: 8260B - Volatile Organic Compounds (GC/MS) - RA Lab Sample ID: 280-151378-19Client Sample ID: MW-7 Matrix: WaterDate Collected: 07/30/21 10:40 Date Received: 07/31/21 09:35 RL MDL cis-1,2-Dichloroethene ND 1.00 ug/L 08/13/21 15:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 4-Bromofluorobenzene (Surr)100 78 -120 08/13/21 15:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Dibromofluoromethane (Surr)98 08/13/21 15:40 177-120 1,2-Dichloroethane-d4 (Surr)100 08/13/21 15:40 170-127 Toluene-d8 (Surr)99 08/13/21 15:40 180-125 Eurofins Denver Page 80 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (78-120) (77-120) (70-127) (80-125) BFB DBFM DCA TOL 103 97 92 94280-151314-E-7 MS Percent Surrogate Recovery (Acceptance Limits) Matrix Spike 101 97 93 93280-151314-E-7 MSD Matrix Spike Duplicate 105 94 103 104280-151322-1 B-1 106 97 102 102280-151322-1 MS B-1 106 98 102 102280-151322-1 MSD B-1 106 95 99 103280-151322-2 B-3 105 94 100 103280-151322-3 MW-2 105 95 102 102280-151322-4 MW-2A 106 94 99 103280-151322-5 MW-2I 106 95 102 103280-151322-6 MW-3 106 96 102 102280-151322-7 MW-4 106 94 99 104280-151322-8 MW-4I 107 94 100 103280-151322-9 MW-5 106 95 101 104280-151322-10 MW-5A 106 94 101 103280-151322-11 MW-5I 105 95 102 103280-151322-12 MW-12 106 96 102 103280-151322-13 MW-12I 107 94 100 103280-151322-13 - DL MW-12I 106 96 104 103280-151322-14 MW-13 106 96 104 103280-151322-15 MW-13I 105 95 103 103280-151322-16 MW-14 106 95 102 104280-151322-17 MW-14I 107 94 102 103280-151322-17 - DL MW-14I 107 95 102 103280-151322-18 MW-14I-A 105 95 104 102280-151322-19 MW-15 106 96 102 103280-151322-20 MW-15I 106 94 99 104280-151322-20 - DL MW-15I 101 99 95 95280-151322-21 MW-16 103 98 94 94280-151322-22 MW-2-C 99 100 93 95280-151322-23 MW-5I-C 101 99 103 99280-151378-1 MW-3I 108 100 110 102280-151378-2 MW-6 106 99 109 103280-151378-2 MS MW-6 106 100 108 103280-151378-2 MSD MW-6 100 99 100 100280-151378-3 MW-6I 108 101 110 101280-151378-5 MW-11 109 97 108 105280-151378-6 MW-11I 106 100 107 103280-151378-7 MW-17I 106 101 108 107280-151378-8 MW-18I 109 101 106 105280-151378-10 MW-20I 109 98 113 103280-151378-11 MW-20I-a 109 98 107 106280-151378-13 MW-8-c 108 99 106 106280-151378-14 MW-9 111 102 104 103280-151378-15 MW-9-a 101 101 101 99280-151378-16 MW-9I 100 99 99 99280-151378-16 - DL MW-9I 109 100 104 101280-151378-18 MW-10I 101 100 102 99280-151378-19 MW-7 100 98 100 99280-151378-19 - RA MW-7 Eurofins Denver Page 81 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (78-120) (77-120) (70-127) (80-125) BFB DBFM DCA TOL 100 99 102 99280-151378-20 Percent Surrogate Recovery (Acceptance Limits) MW-7I 101 97 100 101280-151937-1 MW-8 100 95 102 102280-151937-2 MW-8-c 100 98 104 101280-151937-3 MW-10 100 101 101 99280-151937-3 MS MW-10 101 100 99 100280-151937-3 MSD MW-10 101 98 101 102280-151937-4 MW-19I 101 96 100 102280-151937-5 TRIP BLANK 105 98 100 101LCS 280-545004/4 Lab Control Sample 102 96 90 95LCS 280-545005/4 Lab Control Sample 98 107 105 88LCS 280-545303/4 Lab Control Sample 106 101 110 104LCS 280-545459/4 Lab Control Sample 100 101 100 100LCS 280-546190/4 Lab Control Sample 99 100 98 100LCS 280-546332/4 Lab Control Sample 100 102 102 99LCS 280-547120/4 Lab Control Sample 106 97 98 102LCSD 280-545004/5 Lab Control Sample Dup 104 96 91 95LCSD 280-545005/5 Lab Control Sample Dup 93 94 90 96LCSD 280-545303/5 Lab Control Sample Dup 109 96 105 104LCSD 280-545459/5 Lab Control Sample Dup 100 101 99 100LCSD 280-546190/5 Lab Control Sample Dup 98 102 98 99LCSD 280-546332/5 Lab Control Sample Dup 100 101 98 100LCSD 280-547120/5 Lab Control Sample Dup 106 95 99 104MB 280-545004/9 Method Blank 102 99 95 96MB 280-545005/9 Method Blank 112 104 110 106MB 280-545303/9 Method Blank 107 97 106 106MB 280-545459/9 Method Blank 101 97 99 101MB 280-546190/9 Method Blank 99 98 99 100MB 280-546332/9 Method Blank 101 98 101 101MB 280-547120/9 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene (Surr) DBFM = Dibromofluoromethane (Surr) DCA = 1,2-Dichloroethane-d4 (Surr) TOL = Toluene-d8 (Surr) Method: 8260B SIM - Volatile Organic Compounds (GC/MS) Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (70-127) DCA 105280-151220-H-9 MSD Percent Surrogate Recovery (Acceptance Limits) Matrix Spike Duplicate 104280-151220-K-9 MS Matrix Spike 105280-151322-1 B-1 105280-151322-2 B-3 105280-151322-3 MW-2 106280-151322-4 MW-2A 104280-151322-5 MW-2I 105280-151322-6 MW-3 105280-151322-7 MW-4 Eurofins Denver Page 82 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) (Continued) Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (70-127) DCA 106280-151322-8 Percent Surrogate Recovery (Acceptance Limits) MW-4I 105280-151322-9 MW-5 107280-151322-10 MW-5A 106280-151322-11 MW-5I 106280-151322-12 MW-12 104280-151322-13 MW-12I 106280-151322-14 MW-13 106280-151322-15 MW-13I 105280-151322-16 MW-14 106280-151322-17 MW-14I 105280-151322-18 MW-14I-A 107280-151322-19 MW-15 106280-151322-20 MW-15I 106280-151322-21 MW-16 106280-151322-22 MW-2-C 106280-151322-23 MW-5I-C 113280-151378-1 MW-3I 106280-151378-2 MW-6 113280-151378-3 MW-6I 106280-151378-5 MW-11 106280-151378-6 MW-11I 106280-151378-7 MW-17I 107280-151378-8 MW-18I 108280-151378-10 MW-20I 107280-151378-11 MW-20I-a 106280-151378-13 MW-8-c 108280-151378-14 MW-9 108280-151378-15 MW-9-a 109280-151378-16 MW-9I 108280-151378-18 MW-10I 115280-151378-19 MW-7 113280-151378-20 MW-7I 99280-151937-1 MW-8 99280-151937-2 MW-8-c 100280-151937-3 MW-10 100280-151937-4 MW-19I 102LCS 280-545070/3 Lab Control Sample 103LCS 280-545187/3 Lab Control Sample 104LCS 280-545711/3 Lab Control Sample 104LCS 280-545864/3 Lab Control Sample 106LCS 280-546098/3 Lab Control Sample 107LCS 280-546258/3 Lab Control Sample 99LCS 280-547429/1002 Lab Control Sample 101LCSD 280-545070/4 Lab Control Sample Dup 103LCSD 280-545187/4 Lab Control Sample Dup 103LCSD 280-545711/4 Lab Control Sample Dup 104LCSD 280-545864/4 Lab Control Sample Dup 107LCSD 280-546098/4 Lab Control Sample Dup 107LCSD 280-546258/4 Lab Control Sample Dup 99LCSD 280-547429/3 Lab Control Sample Dup Eurofins Denver Page 83 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) (Continued) Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (70-127) DCA 104MB 280-545070/6 Percent Surrogate Recovery (Acceptance Limits) Method Blank 104MB 280-545187/6 Method Blank 106MB 280-545711/6 Method Blank 106MB 280-545864/6 Method Blank 109MB 280-546098/6 Method Blank 111MB 280-546258/6 Method Blank 100MB 280-547429/4 Method Blank Surrogate Legend DCA = 1,2-Dichloroethane-d4 (Surr) Eurofins Denver Page 84 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) Client Sample ID: Method BlankLab Sample ID: MB 280-545004/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 545004 RL MDL Acetone ND 10.0 ug/L 08/02/21 09:00 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 08/02/21 09:00 1Benzene ND 1.00 ug/L 08/02/21 09:00 1Bromoform ND 2.00 ug/L 08/02/21 09:00 1Bromomethane ND 6.00 ug/L 08/02/21 09:00 12-Butanone (MEK) ND 2.00 ug/L 08/02/21 09:00 1Carbon disulfide ND 1.00 ug/L 08/02/21 09:00 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 09:00 1Chlorobenzene ND 1.00 ug/L 08/02/21 09:00 1Chlorobromomethane ND 1.00 ug/L 08/02/21 09:00 1Chlorodibromomethane ND 2.00 ug/L 08/02/21 09:00 1Chloroethane ND 1.00 ug/L 08/02/21 09:00 1Chloroform ND 2.00 ug/L 08/02/21 09:00 1Chloromethane ND 1.00 ug/L 08/02/21 09:00 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/02/21 09:00 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 09:00 1Cyclohexane ND 5.00 ug/L 08/02/21 09:00 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 09:00 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 09:00 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 09:00 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 09:00 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 09:00 1Dichlorobromomethane ND 2.00 ug/L 08/02/21 09:00 1Dichlorodifluoromethane ND 1.00 ug/L 08/02/21 09:00 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 09:00 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 09:00 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 09:00 11,2-Dichloropropane ND 200 ug/L 08/02/21 09:00 11,4-Dioxane ND 1.00 ug/L 08/02/21 09:00 1Ethylbenzene ND 5.00 ug/L 08/02/21 09:00 12-Hexanone ND 1.00 ug/L 08/02/21 09:00 1Isopropylbenzene ND 5.00 ug/L 08/02/21 09:00 1Methyl acetate ND 1.00 ug/L 08/02/21 09:00 1Methylcyclohexane ND 2.00 ug/L 08/02/21 09:00 1Methylene Chloride ND 5.00 ug/L 08/02/21 09:00 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 08/02/21 09:00 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 09:00 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 09:00 1o-Xylene ND 1.00 ug/L 08/02/21 09:00 1Styrene ND 1.00 ug/L 08/02/21 09:00 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 09:00 1Tetrachloroethene ND 1.00 ug/L 08/02/21 09:00 1Toluene ND 1.00 ug/L 08/02/21 09:00 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 09:00 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 09:00 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 09:00 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 09:00 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 09:00 11,1,2-Trichloroethane Eurofins Denver Page 85 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-545004/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 545004 RL MDL Trichloroethene ND 1.00 ug/L 08/02/21 09:00 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 2.00 ug/L 08/02/21 09:00 1Trichlorofluoromethane ND 3.00 ug/L 08/02/21 09:00 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 09:00 1Vinyl chloride 4-Bromofluorobenzene (Surr)106 78 -120 08/02/21 09:00 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 95 08/02/21 09:00 1Dibromofluoromethane (Surr)77 -120 99 08/02/21 09:00 11,2-Dichloroethane-d4 (Surr)70 -127 104 08/02/21 09:00 1Toluene-d8 (Surr)80 -125 Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-545004/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 545004 Acetone 100 96.77 ug/L 97 39 -156 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 25.0 25.38 ug/L 102 65 -135 Bromoform 25.0 17.53 ug/L 70 62 -135 Bromomethane 25.0 22.72 ug/L 91 45 -135 2-Butanone (MEK)100 93.53 ug/L 94 44 -177 Carbon disulfide 25.0 21.22 ug/L 85 55 -143 Carbon tetrachloride 25.0 22.34 ug/L 89 65 -135 Chlorobenzene 25.0 24.70 ug/L 99 65 -135 Chlorobromomethane 25.0 24.89 ug/L 100 65 -135 Chlorodibromomethane 25.0 22.63 ug/L 91 65 -135 Chloroethane 25.0 23.57 ug/L 94 46 -136 Chloroform 25.0 24.62 ug/L 98 65 -135 Chloromethane 25.0 23.43 ug/L 94 34 -145 cis-1,2-Dichloroethene 25.0 24.24 ug/L 97 65 -135 cis-1,3-Dichloropropene 25.0 24.95 ug/L 100 65 -135 1,2-Dibromo-3-Chloropropane 25.0 19.29 ug/L 77 57 -135 1,2-Dibromoethane 25.0 24.51 ug/L 98 65 -135 1,2-Dichlorobenzene 25.0 24.76 ug/L 99 65 -135 1,3-Dichlorobenzene 25.0 24.65 ug/L 99 65 -135 1,4-Dichlorobenzene 25.0 24.79 ug/L 99 65 -135 Dichlorobromomethane 25.0 23.64 ug/L 95 65 -135 Dichlorodifluoromethane 25.0 21.10 ug/L 84 43 -142 1,1-Dichloroethane 25.0 25.48 ug/L 102 65 -135 1,2-Dichloroethane 25.0 24.26 ug/L 97 65 -135 1,1-Dichloroethene 25.0 23.88 ug/L 96 65 -136 1,2-Dichloropropane 25.0 25.90 ug/L 104 64 -135 Ethylbenzene 25.0 24.61 ug/L 98 65 -135 2-Hexanone 100 99.21 ug/L 99 57 -139 Isopropylbenzene 25.0 25.34 ug/L 101 65 -135 Methylene Chloride 25.0 24.77 ug/L 99 54 -141 4-Methyl-2-pentanone (MIBK)100 97.05 ug/L 97 60 -150 Methyl tert-butyl ether 25.0 24.58 ug/L 98 54 -135 Eurofins Denver Page 86 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-545004/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 545004 m-Xylene & p-Xylene 25.0 24.57 ug/L 98 65 -135 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits o-Xylene 25.0 25.06 ug/L 100 65 -135 Styrene 25.0 25.13 ug/L 101 65 -135 1,1,2,2-Tetrachloroethane 25.0 25.15 ug/L 101 58 -135 Tetrachloroethene 25.0 23.96 ug/L 96 65 -135 Toluene 25.0 24.62 ug/L 98 65 -135 trans-1,2-Dichloroethene 25.0 24.00 ug/L 96 65 -135 trans-1,3-Dichloropropene 25.0 23.36 ug/L 93 65 -135 1,2,3-Trichlorobenzene 25.0 21.43 ug/L 86 60 -135 1,2,4-Trichlorobenzene 25.0 22.74 ug/L 91 58 -135 1,1,1-Trichloroethane 25.0 23.39 ug/L 94 65 -135 1,1,2-Trichloroethane 25.0 24.71 ug/L 99 64 -135 Trichloroethene 25.0 24.00 ug/L 96 65 -135 Trichlorofluoromethane 25.0 24.68 ug/L 99 53 -137 Vinyl chloride 25.0 24.96 ug/L 100 40 -137 4-Bromofluorobenzene (Surr)78 -120 Surrogate 105 LCS LCS Qualifier Limits%Recovery 98Dibromofluoromethane (Surr)77 -120 1001,2-Dichloroethane-d4 (Surr)70 -127 101Toluene-d8 (Surr)80 -125 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-545004/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 545004 Acetone 100 94.95 ug/L 95 39 -156 2 23 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 25.0 25.33 ug/L 101 65 -135 0 20 Bromoform 25.0 17.35 ug/L 69 62 -135 1 27 Bromomethane 25.0 22.19 ug/L 89 45 -135 2 33 2-Butanone (MEK)100 91.50 ug/L 91 44 -177 2 32 Carbon disulfide 25.0 21.37 ug/L 85 55 -143 1 20 Carbon tetrachloride 25.0 22.41 ug/L 90 65 -135 0 21 Chlorobenzene 25.0 24.59 ug/L 98 65 -135 0 20 Chlorobromomethane 25.0 24.40 ug/L 98 65 -135 2 29 Chlorodibromomethane 25.0 22.33 ug/L 89 65 -135 1 20 Chloroethane 25.0 22.79 ug/L 91 46 -136 3 25 Chloroform 25.0 24.40 ug/L 98 65 -135 1 20 Chloromethane 25.0 22.80 ug/L 91 34 -145 3 24 cis-1,2-Dichloroethene 25.0 24.02 ug/L 96 65 -135 1 20 cis-1,3-Dichloropropene 25.0 24.56 ug/L 98 65 -135 2 26 1,2-Dibromo-3-Chloropropane 25.0 19.22 ug/L 77 57 -135 0 22 1,2-Dibromoethane 25.0 24.20 ug/L 97 65 -135 1 27 1,2-Dichlorobenzene 25.0 24.70 ug/L 99 65 -135 0 20 1,3-Dichlorobenzene 25.0 24.82 ug/L 99 65 -135 1 20 1,4-Dichlorobenzene 25.0 24.83 ug/L 99 65 -135 0 23 Dichlorobromomethane 25.0 23.22 ug/L 93 65 -135 2 20 Eurofins Denver Page 87 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-545004/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 545004 Dichlorodifluoromethane 25.0 20.12 ug/L 80 43 -142 5 30 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,1-Dichloroethane 25.0 25.58 ug/L 102 65 -135 0 21 1,2-Dichloroethane 25.0 23.67 ug/L 95 65 -135 2 20 1,1-Dichloroethene 25.0 24.13 ug/L 97 65 -136 1 20 1,2-Dichloropropane 25.0 25.55 ug/L 102 64 -135 1 20 Ethylbenzene 25.0 24.80 ug/L 99 65 -135 1 20 2-Hexanone 100 98.24 ug/L 98 57 -139 1 25 Isopropylbenzene 25.0 25.83 ug/L 103 65 -135 2 20 Methylene Chloride 25.0 24.57 ug/L 98 54 -141 1 26 4-Methyl-2-pentanone (MIBK)100 95.21 ug/L 95 60 -150 2 22 Methyl tert-butyl ether 25.0 24.18 ug/L 97 54 -135 2 21 m-Xylene & p-Xylene 25.0 24.63 ug/L 99 65 -135 0 20 o-Xylene 25.0 25.15 ug/L 101 65 -135 0 20 Styrene 25.0 24.98 ug/L 100 65 -135 1 26 1,1,2,2-Tetrachloroethane 25.0 25.40 ug/L 102 58 -135 1 20 Tetrachloroethene 25.0 24.29 ug/L 97 65 -135 1 20 Toluene 25.0 24.55 ug/L 98 65 -135 0 20 trans-1,2-Dichloroethene 25.0 24.03 ug/L 96 65 -135 0 24 trans-1,3-Dichloropropene 25.0 23.19 ug/L 93 65 -135 1 26 1,2,3-Trichlorobenzene 25.0 22.18 ug/L 89 60 -135 3 36 1,2,4-Trichlorobenzene 25.0 22.95 ug/L 92 58 -135 1 25 1,1,1-Trichloroethane 25.0 23.48 ug/L 94 65 -135 0 20 1,1,2-Trichloroethane 25.0 24.22 ug/L 97 64 -135 2 27 Trichloroethene 25.0 24.05 ug/L 96 65 -135 0 20 Trichlorofluoromethane 25.0 23.69 ug/L 95 53 -137 4 27 Vinyl chloride 25.0 23.92 ug/L 96 40 -137 4 24 4-Bromofluorobenzene (Surr)78 -120 Surrogate 106 LCSD LCSD Qualifier Limits%Recovery 97Dibromofluoromethane (Surr)77 -120 981,2-Dichloroethane-d4 (Surr)70 -127 102Toluene-d8 (Surr)80 -125 Client Sample ID: B-1Lab Sample ID: 280-151322-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 545004 Acetone ND 100 100.1 ug/L 100 39 -156 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 25.0 25.80 ug/L 103 65 -135 Bromoform ND 25.0 15.86 ug/L 63 62 -135 Bromomethane ND 25.0 17.92 ug/L 72 45 -135 2-Butanone (MEK)ND 100 96.27 ug/L 96 44 -177 Carbon disulfide ND 25.0 20.76 ug/L 83 55 -143 Carbon tetrachloride ND 25.0 22.95 ug/L 92 65 -135 Chlorobenzene ND 25.0 24.87 ug/L 99 65 -135 Chlorobromomethane ND 25.0 24.81 ug/L 99 65 -135 Chlorodibromomethane ND 25.0 21.49 ug/L 86 65 -135 Eurofins Denver Page 88 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: B-1Lab Sample ID: 280-151322-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 545004 Chloroethane ND 25.0 24.00 ug/L 96 46 -136 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Chloroform ND 25.0 25.20 ug/L 100 65 -135 Chloromethane ND 25.0 24.25 ug/L 97 34 -145 cis-1,2-Dichloroethene 1.87 25.0 26.07 ug/L 97 65 -135 cis-1,3-Dichloropropene ND 25.0 24.07 ug/L 96 65 -135 1,2-Dibromo-3-Chloropropane ND 25.0 18.37 ug/L 73 57 -135 1,2-Dibromoethane ND 25.0 24.54 ug/L 98 65 -135 1,2-Dichlorobenzene 1.00 25.0 25.70 ug/L 99 65 -135 1,3-Dichlorobenzene ND 25.0 24.40 ug/L 98 65 -135 1,4-Dichlorobenzene ND 25.0 24.42 ug/L 98 65 -135 Dichlorobromomethane ND 25.0 22.76 ug/L 91 65 -135 Dichlorodifluoromethane ND 25.0 21.91 ug/L 88 43 -142 1,1-Dichloroethane ND 25.0 27.33 ug/L 106 65 -135 1,2-Dichloroethane ND 25.0 24.76 ug/L 98 65 -135 1,1-Dichloroethene ND 25.0 24.97 ug/L 100 65 -136 1,2-Dichloropropane ND 25.0 26.34 ug/L 105 64 -135 Ethylbenzene ND 25.0 25.09 ug/L 100 65 -135 2-Hexanone ND 100 104.6 ug/L 105 57 -139 Isopropylbenzene ND 25.0 25.95 ug/L 104 65 -135 Methylene Chloride ND 25.0 24.93 ug/L 100 54 -141 4-Methyl-2-pentanone (MIBK)ND 100 100.8 ug/L 101 60 -150 Methyl tert-butyl ether ND 25.0 24.61 ug/L 98 54 -135 m-Xylene & p-Xylene ND 25.0 24.81 ug/L 99 65 -135 o-Xylene ND 25.0 25.48 ug/L 102 65 -135 Styrene ND 25.0 24.77 ug/L 99 65 -135 1,1,2,2-Tetrachloroethane ND 25.0 26.25 ug/L 105 58 -135 Tetrachloroethene ND 25.0 24.47 ug/L 98 65 -135 Toluene ND 25.0 24.96 ug/L 100 65 -135 trans-1,2-Dichloroethene ND 25.0 24.42 ug/L 98 65 -135 trans-1,3-Dichloropropene ND 25.0 22.24 ug/L 89 65 -135 1,2,3-Trichlorobenzene ND 25.0 22.84 ug/L 91 60 -135 1,2,4-Trichlorobenzene ND 25.0 22.43 ug/L 90 58 -135 1,1,1-Trichloroethane ND 25.0 24.29 ug/L 97 65 -135 1,1,2-Trichloroethane ND 25.0 24.23 ug/L 97 64 -135 Trichloroethene ND 25.0 24.33 ug/L 96 65 -135 Trichlorofluoromethane ND 25.0 25.04 ug/L 100 53 -137 Vinyl chloride ND 25.0 25.36 ug/L 101 40 -137 4-Bromofluorobenzene (Surr)78 -120 Surrogate 106 MS MS Qualifier Limits%Recovery 97Dibromofluoromethane (Surr)77 -120 1021,2-Dichloroethane-d4 (Surr)70 -127 102Toluene-d8 (Surr)80 -125 Eurofins Denver Page 89 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: B-1Lab Sample ID: 280-151322-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 545004 Acetone ND 100 95.62 ug/L 96 39 -156 5 23 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 25.0 25.60 ug/L 102 65 -135 1 20 Bromoform ND 25.0 15.72 ug/L 63 62 -135 1 27 Bromomethane ND 25.0 18.98 ug/L 76 45 -135 6 33 2-Butanone (MEK)ND 100 93.00 ug/L 93 44 -177 3 32 Carbon disulfide ND 25.0 20.97 ug/L 84 55 -143 1 20 Carbon tetrachloride ND 25.0 22.71 ug/L 91 65 -135 1 21 Chlorobenzene ND 25.0 24.58 ug/L 98 65 -135 1 20 Chlorobromomethane ND 25.0 24.85 ug/L 99 65 -135 0 29 Chlorodibromomethane ND 25.0 21.26 ug/L 85 65 -135 1 20 Chloroethane ND 25.0 23.47 ug/L 94 46 -136 2 25 Chloroform ND 25.0 24.85 ug/L 99 65 -135 1 20 Chloromethane ND 25.0 24.06 ug/L 96 34 -145 1 24 cis-1,2-Dichloroethene 1.87 25.0 26.04 ug/L 97 65 -135 0 20 cis-1,3-Dichloropropene ND 25.0 23.51 ug/L 94 65 -135 2 26 1,2-Dibromo-3-Chloropropane ND 25.0 17.96 ug/L 72 57 -135 2 22 1,2-Dibromoethane ND 25.0 23.98 ug/L 96 65 -135 2 27 1,2-Dichlorobenzene 1.00 25.0 25.20 ug/L 97 65 -135 2 20 1,3-Dichlorobenzene ND 25.0 24.04 ug/L 96 65 -135 1 20 1,4-Dichlorobenzene ND 25.0 24.11 ug/L 96 65 -135 1 23 Dichlorobromomethane ND 25.0 22.83 ug/L 91 65 -135 0 20 Dichlorodifluoromethane ND 25.0 21.21 ug/L 85 43 -142 3 30 1,1-Dichloroethane ND 25.0 26.93 ug/L 104 65 -135 1 21 1,2-Dichloroethane ND 25.0 24.61 ug/L 97 65 -135 1 20 1,1-Dichloroethene ND 25.0 24.64 ug/L 99 65 -136 1 20 1,2-Dichloropropane ND 25.0 25.75 ug/L 103 64 -135 2 20 Ethylbenzene ND 25.0 24.83 ug/L 99 65 -135 1 20 2-Hexanone ND 100 100.6 ug/L 101 57 -139 4 25 Isopropylbenzene ND 25.0 25.68 ug/L 103 65 -135 1 20 Methylene Chloride ND 25.0 24.82 ug/L 99 54 -141 0 26 4-Methyl-2-pentanone (MIBK)ND 100 98.11 ug/L 98 60 -150 3 22 Methyl tert-butyl ether ND 25.0 24.33 ug/L 97 54 -135 1 21 m-Xylene & p-Xylene ND 25.0 24.56 ug/L 98 65 -135 1 20 o-Xylene ND 25.0 24.85 ug/L 99 65 -135 3 20 Styrene ND 25.0 24.46 ug/L 98 65 -135 1 26 1,1,2,2-Tetrachloroethane ND 25.0 25.59 ug/L 102 58 -135 3 20 Tetrachloroethene ND 25.0 24.02 ug/L 96 65 -135 2 20 Toluene ND 25.0 24.83 ug/L 99 65 -135 1 20 trans-1,2-Dichloroethene ND 25.0 24.24 ug/L 97 65 -135 1 24 trans-1,3-Dichloropropene ND 25.0 22.28 ug/L 89 65 -135 0 26 1,2,3-Trichlorobenzene ND 25.0 22.52 ug/L 90 60 -135 1 36 1,2,4-Trichlorobenzene ND 25.0 22.17 ug/L 89 58 -135 1 25 1,1,1-Trichloroethane ND 25.0 23.94 ug/L 96 65 -135 1 20 1,1,2-Trichloroethane ND 25.0 24.34 ug/L 97 64 -135 0 27 Trichloroethene ND 25.0 23.89 ug/L 95 65 -135 2 20 Trichlorofluoromethane ND 25.0 24.25 ug/L 97 53 -137 3 27 Vinyl chloride ND 25.0 24.69 ug/L 99 40 -137 3 24 Eurofins Denver Page 90 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: B-1Lab Sample ID: 280-151322-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 545004 4-Bromofluorobenzene (Surr)78 -120 Surrogate 106 MSD MSD Qualifier Limits%Recovery 98Dibromofluoromethane (Surr)77 -120 1021,2-Dichloroethane-d4 (Surr)70 -127 102Toluene-d8 (Surr)80 -125 Client Sample ID: Method BlankLab Sample ID: MB 280-545005/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 545005 RL MDL Acetone ND 10.0 ug/L 08/02/21 10:07 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 08/02/21 10:07 1Benzene ND 1.00 ug/L 08/02/21 10:07 1Bromoform ND 2.00 ug/L 08/02/21 10:07 1Bromomethane ND 6.00 ug/L 08/02/21 10:07 12-Butanone (MEK) ND 2.00 ug/L 08/02/21 10:07 1Carbon disulfide ND 1.00 ug/L 08/02/21 10:07 1Carbon tetrachloride ND 1.00 ug/L 08/02/21 10:07 1Chlorobenzene ND 1.00 ug/L 08/02/21 10:07 1Chlorobromomethane ND 1.00 ug/L 08/02/21 10:07 1Chlorodibromomethane ND 2.00 ug/L 08/02/21 10:07 1Chloroethane ND 1.00 ug/L 08/02/21 10:07 1Chloroform ND 2.00 ug/L 08/02/21 10:07 1Chloromethane ND 1.00 ug/L 08/02/21 10:07 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/02/21 10:07 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/02/21 10:07 1Cyclohexane ND 5.00 ug/L 08/02/21 10:07 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/02/21 10:07 11,2-Dibromoethane ND 1.00 ug/L 08/02/21 10:07 11,2-Dichlorobenzene ND 1.00 ug/L 08/02/21 10:07 11,3-Dichlorobenzene ND 1.00 ug/L 08/02/21 10:07 11,4-Dichlorobenzene ND 1.00 ug/L 08/02/21 10:07 1Dichlorobromomethane ND 2.00 ug/L 08/02/21 10:07 1Dichlorodifluoromethane ND 1.00 ug/L 08/02/21 10:07 11,1-Dichloroethane ND 1.00 ug/L 08/02/21 10:07 11,2-Dichloroethane ND 1.00 ug/L 08/02/21 10:07 11,1-Dichloroethene ND 1.00 ug/L 08/02/21 10:07 11,2-Dichloropropane ND 200 ug/L 08/02/21 10:07 11,4-Dioxane ND 1.00 ug/L 08/02/21 10:07 1Ethylbenzene ND 5.00 ug/L 08/02/21 10:07 12-Hexanone ND 1.00 ug/L 08/02/21 10:07 1Isopropylbenzene ND 5.00 ug/L 08/02/21 10:07 1Methyl acetate ND 1.00 ug/L 08/02/21 10:07 1Methylcyclohexane ND 2.00 ug/L 08/02/21 10:07 1Methylene Chloride ND 5.00 ug/L 08/02/21 10:07 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 08/02/21 10:07 1Methyl tert-butyl ether ND 2.00 ug/L 08/02/21 10:07 1m-Xylene & p-Xylene ND 1.00 ug/L 08/02/21 10:07 1o-Xylene Eurofins Denver Page 91 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-545005/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 545005 RL MDL Styrene ND 1.00 ug/L 08/02/21 10:07 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 08/02/21 10:07 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/02/21 10:07 1Tetrachloroethene ND 1.00 ug/L 08/02/21 10:07 1Toluene ND 1.00 ug/L 08/02/21 10:07 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/02/21 10:07 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/02/21 10:07 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/02/21 10:07 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/02/21 10:07 11,1,1-Trichloroethane ND 1.00 ug/L 08/02/21 10:07 11,1,2-Trichloroethane ND 1.00 ug/L 08/02/21 10:07 1Trichloroethene ND 2.00 ug/L 08/02/21 10:07 1Trichlorofluoromethane ND 3.00 ug/L 08/02/21 10:07 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/02/21 10:07 1Vinyl chloride 4-Bromofluorobenzene (Surr)102 78 -120 08/02/21 10:07 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 99 08/02/21 10:07 1Dibromofluoromethane (Surr)77 -120 95 08/02/21 10:07 11,2-Dichloroethane-d4 (Surr)70 -127 96 08/02/21 10:07 1Toluene-d8 (Surr)80 -125 Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-545005/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 545005 Acetone 100 79.31 ug/L 79 39 -156 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 25.0 21.11 ug/L 84 65 -135 Bromoform 25.0 25.40 ug/L 102 62 -135 Bromomethane 25.0 22.66 ug/L 91 45 -135 2-Butanone (MEK)100 73.54 ug/L 74 44 -177 Carbon disulfide 25.0 18.36 ug/L 73 55 -143 Carbon tetrachloride 25.0 22.67 ug/L 91 65 -135 Chlorobenzene 25.0 22.54 ug/L 90 65 -135 Chlorobromomethane 25.0 23.37 ug/L 93 65 -135 Chlorodibromomethane 25.0 23.02 ug/L 92 65 -135 Chloroethane 25.0 22.83 ug/L 91 46 -136 Chloroform 25.0 21.40 ug/L 86 65 -135 Chloromethane 25.0 24.83 ug/L 99 34 -145 cis-1,2-Dichloroethene 25.0 21.58 ug/L 86 65 -135 cis-1,3-Dichloropropene 25.0 20.91 ug/L 84 65 -135 1,2-Dibromo-3-Chloropropane 25.0 22.27 ug/L 89 57 -135 1,2-Dibromoethane 25.0 21.70 ug/L 87 65 -135 1,2-Dichlorobenzene 25.0 22.16 ug/L 89 65 -135 1,3-Dichlorobenzene 25.0 22.23 ug/L 89 65 -135 1,4-Dichlorobenzene 25.0 21.92 ug/L 88 65 -135 Dichlorobromomethane 25.0 22.09 ug/L 88 65 -135 Dichlorodifluoromethane 25.0 30.26 ug/L 121 43 -142 Eurofins Denver Page 92 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-545005/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 545005 1,1-Dichloroethane 25.0 19.96 ug/L 80 65 -135 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane 25.0 20.50 ug/L 82 65 -135 1,1-Dichloroethene 25.0 20.24 ug/L 81 65 -136 1,2-Dichloropropane 25.0 20.98 ug/L 84 64 -135 Ethylbenzene 25.0 22.38 ug/L 90 65 -135 2-Hexanone 100 75.13 ug/L 75 57 -139 Isopropylbenzene 25.0 24.78 ug/L 99 65 -135 Methylene Chloride 25.0 20.80 ug/L 83 54 -141 4-Methyl-2-pentanone (MIBK)100 81.79 ug/L 82 60 -150 Methyl tert-butyl ether 25.0 21.78 ug/L 87 54 -135 m-Xylene & p-Xylene 25.0 23.57 ug/L 94 65 -135 o-Xylene 25.0 21.48 ug/L 86 65 -135 Styrene 25.0 21.52 ug/L 86 65 -135 1,1,2,2-Tetrachloroethane 25.0 21.31 ug/L 85 58 -135 Tetrachloroethene 25.0 22.99 ug/L 92 65 -135 Toluene 25.0 22.81 ug/L 91 65 -135 trans-1,2-Dichloroethene 25.0 19.95 ug/L 80 65 -135 trans-1,3-Dichloropropene 25.0 22.48 ug/L 90 65 -135 1,2,3-Trichlorobenzene 25.0 21.69 ug/L 87 60 -135 1,2,4-Trichlorobenzene 25.0 22.02 ug/L 88 58 -135 1,1,1-Trichloroethane 25.0 21.38 ug/L 86 65 -135 1,1,2-Trichloroethane 25.0 23.31 ug/L 93 64 -135 Trichloroethene 25.0 20.92 ug/L 84 65 -135 Trichlorofluoromethane 25.0 25.14 ug/L 101 53 -137 Vinyl chloride 25.0 24.47 ug/L 98 40 -137 4-Bromofluorobenzene (Surr)78 -120 Surrogate 102 LCS LCS Qualifier Limits%Recovery 96Dibromofluoromethane (Surr)77 -120 901,2-Dichloroethane-d4 (Surr)70 -127 95Toluene-d8 (Surr)80 -125 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-545005/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 545005 Acetone 100 76.67 ug/L 77 39 -156 3 23 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 25.0 21.06 ug/L 84 65 -135 0 20 Bromoform 25.0 24.79 ug/L 99 62 -135 2 27 Bromomethane 25.0 22.24 ug/L 89 45 -135 2 33 2-Butanone (MEK)100 73.47 ug/L 73 44 -177 0 32 Carbon disulfide 25.0 18.01 ug/L 72 55 -143 2 20 Carbon tetrachloride 25.0 22.09 ug/L 88 65 -135 3 21 Chlorobenzene 25.0 21.98 ug/L 88 65 -135 3 20 Chlorobromomethane 25.0 23.58 ug/L 94 65 -135 1 29 Chlorodibromomethane 25.0 22.73 ug/L 91 65 -135 1 20 Chloroethane 25.0 22.93 ug/L 92 46 -136 0 25 Eurofins Denver Page 93 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-545005/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 545005 Chloroform 25.0 21.49 ug/L 86 65 -135 0 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Chloromethane 25.0 25.04 ug/L 100 34 -145 1 24 cis-1,2-Dichloroethene 25.0 21.27 ug/L 85 65 -135 1 20 cis-1,3-Dichloropropene 25.0 20.73 ug/L 83 65 -135 1 26 1,2-Dibromo-3-Chloropropane 25.0 22.76 ug/L 91 57 -135 2 22 1,2-Dibromoethane 25.0 21.57 ug/L 86 65 -135 1 27 1,2-Dichlorobenzene 25.0 22.76 ug/L 91 65 -135 3 20 1,3-Dichlorobenzene 25.0 22.32 ug/L 89 65 -135 0 20 1,4-Dichlorobenzene 25.0 21.94 ug/L 88 65 -135 0 23 Dichlorobromomethane 25.0 21.66 ug/L 87 65 -135 2 20 Dichlorodifluoromethane 25.0 29.82 ug/L 119 43 -142 1 30 1,1-Dichloroethane 25.0 19.90 ug/L 80 65 -135 0 21 1,2-Dichloroethane 25.0 20.40 ug/L 82 65 -135 1 20 1,1-Dichloroethene 25.0 19.95 ug/L 80 65 -136 1 20 1,2-Dichloropropane 25.0 21.30 ug/L 85 64 -135 2 20 Ethylbenzene 25.0 21.93 ug/L 88 65 -135 2 20 2-Hexanone 100 74.18 ug/L 74 57 -139 1 25 Isopropylbenzene 25.0 25.05 ug/L 100 65 -135 1 20 Methylene Chloride 25.0 21.12 ug/L 84 54 -141 2 26 4-Methyl-2-pentanone (MIBK)100 81.27 ug/L 81 60 -150 1 22 Methyl tert-butyl ether 25.0 22.16 ug/L 89 54 -135 2 21 m-Xylene & p-Xylene 25.0 23.28 ug/L 93 65 -135 1 20 o-Xylene 25.0 21.42 ug/L 86 65 -135 0 20 Styrene 25.0 21.03 ug/L 84 65 -135 2 26 1,1,2,2-Tetrachloroethane 25.0 21.40 ug/L 86 58 -135 0 20 Tetrachloroethene 25.0 23.06 ug/L 92 65 -135 0 20 Toluene 25.0 22.79 ug/L 91 65 -135 0 20 trans-1,2-Dichloroethene 25.0 20.07 ug/L 80 65 -135 1 24 trans-1,3-Dichloropropene 25.0 22.68 ug/L 91 65 -135 1 26 1,2,3-Trichlorobenzene 25.0 22.58 ug/L 90 60 -135 4 36 1,2,4-Trichlorobenzene 25.0 22.69 ug/L 91 58 -135 3 25 1,1,1-Trichloroethane 25.0 20.98 ug/L 84 65 -135 2 20 1,1,2-Trichloroethane 25.0 23.55 ug/L 94 64 -135 1 27 Trichloroethene 25.0 20.85 ug/L 83 65 -135 0 20 Trichlorofluoromethane 25.0 25.26 ug/L 101 53 -137 0 27 Vinyl chloride 25.0 24.63 ug/L 99 40 -137 1 24 4-Bromofluorobenzene (Surr)78 -120 Surrogate 104 LCSD LCSD Qualifier Limits%Recovery 96Dibromofluoromethane (Surr)77 -120 911,2-Dichloroethane-d4 (Surr)70 -127 95Toluene-d8 (Surr)80 -125 Eurofins Denver Page 94 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 280-151314-E-7 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 545005 Acetone ND 100 77.51 ug/L 78 39 -156 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 25.0 22.79 ug/L 91 65 -135 Bromoform ND 25.0 25.66 ug/L 103 62 -135 Bromomethane ND 25.0 25.52 ug/L 102 45 -135 2-Butanone (MEK)ND 100 78.06 ug/L 78 44 -177 Carbon disulfide ND 25.0 19.11 ug/L 76 55 -143 Carbon tetrachloride ND 25.0 24.04 ug/L 96 65 -135 Chlorobenzene ND 25.0 22.97 ug/L 92 65 -135 Chlorobromomethane ND 25.0 24.48 ug/L 98 65 -135 Chlorodibromomethane ND 25.0 23.21 ug/L 93 65 -135 Chloroethane ND 25.0 23.23 ug/L 93 46 -136 Chloroform ND 25.0 22.79 ug/L 91 65 -135 Chloromethane ND 25.0 27.75 ug/L 111 34 -145 cis-1,2-Dichloroethene ND 25.0 23.05 ug/L 92 65 -135 cis-1,3-Dichloropropene ND 25.0 20.77 ug/L 83 65 -135 1,2-Dibromo-3-Chloropropane ND 25.0 24.08 ug/L 96 57 -135 1,2-Dibromoethane ND 25.0 22.12 ug/L 88 65 -135 1,2-Dichlorobenzene ND 25.0 23.25 ug/L 93 65 -135 1,3-Dichlorobenzene ND 25.0 23.16 ug/L 93 65 -135 1,4-Dichlorobenzene ND 25.0 22.24 ug/L 89 65 -135 Dichlorobromomethane ND 25.0 22.92 ug/L 92 65 -135 Dichlorodifluoromethane ND 25.0 31.19 ug/L 125 43 -142 1,1-Dichloroethane ND 25.0 21.45 ug/L 86 65 -135 1,2-Dichloroethane ND 25.0 21.28 ug/L 85 65 -135 1,1-Dichloroethene ND 25.0 21.86 ug/L 87 65 -136 1,2-Dichloropropane ND 25.0 22.16 ug/L 89 64 -135 Ethylbenzene ND 25.0 23.51 ug/L 94 65 -135 2-Hexanone ND 100 79.70 ug/L 80 57 -139 Isopropylbenzene ND 25.0 26.65 ug/L 105 65 -135 Methylene Chloride ND 25.0 22.12 ug/L 88 54 -141 4-Methyl-2-pentanone (MIBK)ND 100 89.51 ug/L 90 60 -150 Methyl tert-butyl ether ND 25.0 23.51 ug/L 94 54 -135 m-Xylene & p-Xylene ND 25.0 24.15 ug/L 97 65 -135 o-Xylene ND 25.0 22.28 ug/L 89 65 -135 Styrene ND 25.0 20.43 ug/L 82 65 -135 1,1,2,2-Tetrachloroethane ND 25.0 22.47 ug/L 90 58 -135 Tetrachloroethene ND 25.0 23.99 ug/L 96 65 -135 Toluene ND 25.0 24.05 ug/L 96 65 -135 trans-1,2-Dichloroethene ND 25.0 21.66 ug/L 87 65 -135 trans-1,3-Dichloropropene ND 25.0 22.75 ug/L 91 65 -135 1,2,3-Trichlorobenzene ND 25.0 23.68 ug/L 95 60 -135 1,2,4-Trichlorobenzene ND 25.0 24.47 ug/L 98 58 -135 1,1,1-Trichloroethane ND 25.0 23.08 ug/L 92 65 -135 1,1,2-Trichloroethane ND 25.0 24.33 ug/L 97 64 -135 Trichloroethene ND 25.0 21.12 ug/L 84 65 -135 Trichlorofluoromethane ND 25.0 25.75 ug/L 103 53 -137 Vinyl chloride ND 25.0 25.51 ug/L 102 40 -137 Eurofins Denver Page 95 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 280-151314-E-7 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 545005 4-Bromofluorobenzene (Surr)78 -120 Surrogate 103 MS MS Qualifier Limits%Recovery 97Dibromofluoromethane (Surr)77 -120 921,2-Dichloroethane-d4 (Surr)70 -127 94Toluene-d8 (Surr)80 -125 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-151314-E-7 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 545005 Acetone ND 100 80.88 ug/L 81 39 -156 4 23 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 25.0 22.45 ug/L 90 65 -135 1 20 Bromoform ND 25.0 25.82 ug/L 103 62 -135 1 27 Bromomethane ND 25.0 26.57 ug/L 106 45 -135 4 33 2-Butanone (MEK)ND 100 80.11 ug/L 80 44 -177 3 32 Carbon disulfide ND 25.0 19.08 ug/L 76 55 -143 0 20 Carbon tetrachloride ND 25.0 24.44 ug/L 98 65 -135 2 21 Chlorobenzene ND 25.0 22.96 ug/L 92 65 -135 0 20 Chlorobromomethane ND 25.0 24.25 ug/L 97 65 -135 1 29 Chlorodibromomethane ND 25.0 23.30 ug/L 93 65 -135 0 20 Chloroethane ND 25.0 21.76 ug/L 87 46 -136 7 25 Chloroform ND 25.0 22.72 ug/L 91 65 -135 0 20 Chloromethane ND 25.0 27.07 ug/L 108 34 -145 2 24 cis-1,2-Dichloroethene ND 25.0 23.15 ug/L 93 65 -135 0 20 cis-1,3-Dichloropropene ND 25.0 20.80 ug/L 83 65 -135 0 26 1,2-Dibromo-3-Chloropropane ND 25.0 25.99 ug/L 104 57 -135 8 22 1,2-Dibromoethane ND 25.0 22.70 ug/L 91 65 -135 3 27 1,2-Dichlorobenzene ND 25.0 23.85 ug/L 95 65 -135 3 20 1,3-Dichlorobenzene ND 25.0 22.87 ug/L 91 65 -135 1 20 1,4-Dichlorobenzene ND 25.0 22.45 ug/L 90 65 -135 1 23 Dichlorobromomethane ND 25.0 22.64 ug/L 91 65 -135 1 20 Dichlorodifluoromethane ND 25.0 30.73 ug/L 123 43 -142 1 30 1,1-Dichloroethane ND 25.0 21.03 ug/L 84 65 -135 2 21 1,2-Dichloroethane ND 25.0 21.50 ug/L 86 65 -135 1 20 1,1-Dichloroethene ND 25.0 21.83 ug/L 87 65 -136 0 20 1,2-Dichloropropane ND 25.0 22.27 ug/L 89 64 -135 0 20 Ethylbenzene ND 25.0 23.65 ug/L 95 65 -135 1 20 2-Hexanone ND 100 83.26 ug/L 83 57 -139 4 25 Isopropylbenzene ND 25.0 26.65 ug/L 105 65 -135 0 20 Methylene Chloride ND 25.0 21.97 ug/L 88 54 -141 1 26 4-Methyl-2-pentanone (MIBK)ND 100 91.80 ug/L 92 60 -150 3 22 Methyl tert-butyl ether ND 25.0 23.97 ug/L 96 54 -135 2 21 m-Xylene & p-Xylene ND 25.0 24.39 ug/L 98 65 -135 1 20 o-Xylene ND 25.0 22.45 ug/L 90 65 -135 1 20 Styrene ND 25.0 20.13 ug/L 81 65 -135 1 26 1,1,2,2-Tetrachloroethane ND 25.0 22.84 ug/L 91 58 -135 2 20 Tetrachloroethene ND 25.0 23.80 ug/L 95 65 -135 1 20 Toluene ND 25.0 23.75 ug/L 95 65 -135 1 20 Eurofins Denver Page 96 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-151314-E-7 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 545005 trans-1,2-Dichloroethene ND 25.0 21.28 ug/L 85 65 -135 2 24 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD trans-1,3-Dichloropropene ND 25.0 23.06 ug/L 92 65 -135 1 26 1,2,3-Trichlorobenzene ND 25.0 25.26 ug/L 101 60 -135 6 36 1,2,4-Trichlorobenzene ND 25.0 25.05 ug/L 100 58 -135 2 25 1,1,1-Trichloroethane ND 25.0 22.87 ug/L 91 65 -135 1 20 1,1,2-Trichloroethane ND 25.0 24.89 ug/L 100 64 -135 2 27 Trichloroethene ND 25.0 21.51 ug/L 86 65 -135 2 20 Trichlorofluoromethane ND 25.0 25.66 ug/L 103 53 -137 0 27 Vinyl chloride ND 25.0 25.30 ug/L 101 40 -137 1 24 4-Bromofluorobenzene (Surr)78 -120 Surrogate 101 MSD MSD Qualifier Limits%Recovery 97Dibromofluoromethane (Surr)77 -120 931,2-Dichloroethane-d4 (Surr)70 -127 93Toluene-d8 (Surr)80 -125 Client Sample ID: Method BlankLab Sample ID: MB 280-545303/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 545303 RL MDL Acetone ND 10.0 ug/L 08/04/21 11:21 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 08/04/21 11:21 1Benzene ND 1.00 ug/L 08/04/21 11:21 1Bromoform ND 2.00 ug/L 08/04/21 11:21 1Bromomethane ND 6.00 ug/L 08/04/21 11:21 12-Butanone (MEK) ND 2.00 ug/L 08/04/21 11:21 1Carbon disulfide ND 1.00 ug/L 08/04/21 11:21 1Carbon tetrachloride ND 1.00 ug/L 08/04/21 11:21 1Chlorobenzene ND 1.00 ug/L 08/04/21 11:21 1Chlorobromomethane ND 1.00 ug/L 08/04/21 11:21 1Chlorodibromomethane ND 2.00 ug/L 08/04/21 11:21 1Chloroethane ND 1.00 ug/L 08/04/21 11:21 1Chloroform ND 2.00 ug/L 08/04/21 11:21 1Chloromethane ND 1.00 ug/L 08/04/21 11:21 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/04/21 11:21 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/04/21 11:21 1Cyclohexane ND 5.00 ug/L 08/04/21 11:21 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/04/21 11:21 11,2-Dibromoethane ND 1.00 ug/L 08/04/21 11:21 11,2-Dichlorobenzene ND 1.00 ug/L 08/04/21 11:21 11,3-Dichlorobenzene ND 1.00 ug/L 08/04/21 11:21 11,4-Dichlorobenzene ND 1.00 ug/L 08/04/21 11:21 1Dichlorobromomethane ND 2.00 ug/L 08/04/21 11:21 1Dichlorodifluoromethane ND 1.00 ug/L 08/04/21 11:21 11,1-Dichloroethane ND 1.00 ug/L 08/04/21 11:21 11,2-Dichloroethane ND 1.00 ug/L 08/04/21 11:21 11,1-Dichloroethene ND 1.00 ug/L 08/04/21 11:21 11,2-Dichloropropane Eurofins Denver Page 97 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-545303/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 545303 RL MDL 1,4-Dioxane ND 200 ug/L 08/04/21 11:21 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 08/04/21 11:21 1Ethylbenzene ND 5.00 ug/L 08/04/21 11:21 12-Hexanone ND 1.00 ug/L 08/04/21 11:21 1Isopropylbenzene ND 5.00 ug/L 08/04/21 11:21 1Methyl acetate ND 1.00 ug/L 08/04/21 11:21 1Methylcyclohexane ND 2.00 ug/L 08/04/21 11:21 1Methylene Chloride ND 5.00 ug/L 08/04/21 11:21 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 08/04/21 11:21 1Methyl tert-butyl ether ND 2.00 ug/L 08/04/21 11:21 1m-Xylene & p-Xylene ND 1.00 ug/L 08/04/21 11:21 1o-Xylene ND 1.00 ug/L 08/04/21 11:21 1Styrene ND 1.00 ug/L 08/04/21 11:21 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/04/21 11:21 1Tetrachloroethene ND 1.00 ug/L 08/04/21 11:21 1Toluene ND 1.00 ug/L 08/04/21 11:21 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/04/21 11:21 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/04/21 11:21 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/04/21 11:21 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/04/21 11:21 11,1,1-Trichloroethane ND 1.00 ug/L 08/04/21 11:21 11,1,2-Trichloroethane ND 1.00 ug/L 08/04/21 11:21 1Trichloroethene ND 2.00 ug/L 08/04/21 11:21 1Trichlorofluoromethane ND 3.00 ug/L 08/04/21 11:21 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/04/21 11:21 1Vinyl chloride 4-Bromofluorobenzene (Surr)112 78 -120 08/04/21 11:21 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 104 08/04/21 11:21 1Dibromofluoromethane (Surr)77 -120 110 08/04/21 11:21 11,2-Dichloroethane-d4 (Surr)70 -127 106 08/04/21 11:21 1Toluene-d8 (Surr)80 -125 Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-545303/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 545303 Acetone 100 83.85 ug/L 84 39 -156 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 25.0 25.00 ug/L 100 65 -135 Bromoform 25.0 20.05 ug/L 80 62 -135 Bromomethane 25.0 27.21 ug/L 109 45 -135 2-Butanone (MEK)100 89.29 ug/L 89 44 -177 Carbon disulfide 25.0 24.68 ug/L 99 55 -143 Carbon tetrachloride 25.0 29.30 ug/L 117 65 -135 Chlorobenzene 25.0 22.50 ug/L 90 65 -135 Chlorobromomethane 25.0 25.86 ug/L 103 65 -135 Chlorodibromomethane 25.0 25.33 ug/L 101 65 -135 Chloroethane 25.0 24.41 ug/L 98 46 -136 Eurofins Denver Page 98 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-545303/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 545303 Chloroform 25.0 25.63 ug/L 103 65 -135 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Chloromethane 25.0 32.45 ug/L 130 34 -145 cis-1,2-Dichloroethene 25.0 23.63 ug/L 95 65 -135 cis-1,3-Dichloropropene 25.0 21.13 ug/L 85 65 -135 1,2-Dibromo-3-Chloropropane 25.0 20.15 ug/L 81 57 -135 1,2-Dibromoethane 25.0 24.64 ug/L 99 65 -135 1,2-Dichlorobenzene 25.0 22.65 ug/L 91 65 -135 1,3-Dichlorobenzene 25.0 22.64 ug/L 91 65 -135 1,4-Dichlorobenzene 25.0 22.51 ug/L 90 65 -135 Dichlorobromomethane 25.0 26.19 ug/L 105 65 -135 Dichlorodifluoromethane 25.0 20.48 ug/L 82 43 -142 1,1-Dichloroethane 25.0 23.24 ug/L 93 65 -135 1,2-Dichloroethane 25.0 24.68 ug/L 99 65 -135 1,1-Dichloroethene 25.0 24.53 ug/L 98 65 -136 1,2-Dichloropropane 25.0 24.21 ug/L 97 64 -135 Ethylbenzene 25.0 22.76 ug/L 91 65 -135 2-Hexanone 100 95.47 ug/L 95 57 -139 Isopropylbenzene 25.0 22.87 ug/L 91 65 -135 Methylene Chloride 25.0 25.22 ug/L 101 54 -141 4-Methyl-2-pentanone (MIBK)100 83.43 ug/L 83 60 -150 Methyl tert-butyl ether 25.0 24.97 ug/L 100 54 -135 m-Xylene & p-Xylene 25.0 22.55 ug/L 90 65 -135 o-Xylene 25.0 22.21 ug/L 89 65 -135 Styrene 25.0 23.07 ug/L 92 65 -135 1,1,2,2-Tetrachloroethane 25.0 21.82 ug/L 87 58 -135 Tetrachloroethene 25.0 22.06 ug/L 88 65 -135 Toluene 25.0 24.15 ug/L 97 65 -135 trans-1,2-Dichloroethene 25.0 25.24 ug/L 101 65 -135 trans-1,3-Dichloropropene 25.0 23.14 ug/L 93 65 -135 1,2,3-Trichlorobenzene 25.0 23.68 ug/L 95 60 -135 1,2,4-Trichlorobenzene 25.0 23.45 ug/L 94 58 -135 1,1,1-Trichloroethane 25.0 26.08 ug/L 104 65 -135 1,1,2-Trichloroethane 25.0 25.74 ug/L 103 64 -135 Trichloroethene 25.0 21.95 ug/L 88 65 -135 Trichlorofluoromethane 25.0 27.11 ug/L 108 53 -137 Vinyl chloride 25.0 31.24 ug/L 125 40 -137 4-Bromofluorobenzene (Surr)78 -120 Surrogate 98 LCS LCS Qualifier Limits%Recovery 107Dibromofluoromethane (Surr)77 -120 1051,2-Dichloroethane-d4 (Surr)70 -127 88Toluene-d8 (Surr)80 -125 Eurofins Denver Page 99 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-545303/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 545303 Acetone 100 72.35 ug/L 72 39 -156 15 23 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 25.0 19.81 *1 ug/L 79 65 -135 23 20 Bromoform 25.0 20.91 ug/L 84 62 -135 4 27 Bromomethane 25.0 22.73 ug/L 91 45 -135 18 33 2-Butanone (MEK)100 78.24 ug/L 78 44 -177 13 32 Carbon disulfide 25.0 19.62 *1 ug/L 78 55 -143 23 20 Carbon tetrachloride 25.0 23.07 *1 ug/L 92 65 -135 24 21 Chlorobenzene 25.0 21.97 ug/L 88 65 -135 2 20 Chlorobromomethane 25.0 22.16 ug/L 89 65 -135 15 29 Chlorodibromomethane 25.0 23.55 ug/L 94 65 -135 7 20 Chloroethane 25.0 19.81 ug/L 79 46 -136 21 25 Chloroform 25.0 21.43 ug/L 86 65 -135 18 20 Chloromethane 25.0 28.71 ug/L 115 34 -145 12 24 cis-1,2-Dichloroethene 25.0 19.24 ug/L 77 65 -135 20 20 cis-1,3-Dichloropropene 25.0 21.77 ug/L 87 65 -135 3 26 1,2-Dibromo-3-Chloropropane 25.0 19.40 ug/L 78 57 -135 4 22 1,2-Dibromoethane 25.0 23.53 ug/L 94 65 -135 5 27 1,2-Dichlorobenzene 25.0 21.49 ug/L 86 65 -135 5 20 1,3-Dichlorobenzene 25.0 21.88 ug/L 88 65 -135 3 20 1,4-Dichlorobenzene 25.0 22.04 ug/L 88 65 -135 2 23 Dichlorobromomethane 25.0 21.13 *1 ug/L 85 65 -135 21 20 Dichlorodifluoromethane 25.0 14.70 *1 ug/L 59 43 -142 33 30 1,1-Dichloroethane 25.0 20.55 ug/L 82 65 -135 12 21 1,2-Dichloroethane 25.0 20.47 ug/L 82 65 -135 19 20 1,1-Dichloroethene 25.0 19.29 *1 ug/L 77 65 -136 24 20 1,2-Dichloropropane 25.0 20.04 ug/L 80 64 -135 19 20 Ethylbenzene 25.0 23.54 ug/L 94 65 -135 3 20 2-Hexanone 100 86.61 ug/L 87 57 -139 10 25 Isopropylbenzene 25.0 20.34 ug/L 81 65 -135 12 20 Methylene Chloride 25.0 20.39 ug/L 82 54 -141 21 26 4-Methyl-2-pentanone (MIBK)100 74.84 ug/L 75 60 -150 11 22 Methyl tert-butyl ether 25.0 22.20 ug/L 89 54 -135 12 21 m-Xylene & p-Xylene 25.0 22.78 ug/L 91 65 -135 1 20 o-Xylene 25.0 24.23 ug/L 97 65 -135 9 20 Styrene 25.0 24.96 ug/L 100 65 -135 8 26 1,1,2,2-Tetrachloroethane 25.0 21.12 ug/L 84 58 -135 3 20 Tetrachloroethene 25.0 23.14 ug/L 93 65 -135 5 20 Toluene 25.0 21.04 ug/L 84 65 -135 14 20 trans-1,2-Dichloroethene 25.0 20.96 ug/L 84 65 -135 19 24 trans-1,3-Dichloropropene 25.0 20.68 ug/L 83 65 -135 11 26 1,2,3-Trichlorobenzene 25.0 21.35 ug/L 85 60 -135 10 36 1,2,4-Trichlorobenzene 25.0 21.55 ug/L 86 58 -135 8 25 1,1,1-Trichloroethane 25.0 20.86 *1 ug/L 83 65 -135 22 20 1,1,2-Trichloroethane 25.0 23.01 ug/L 92 64 -135 11 27 Trichloroethene 25.0 21.99 ug/L 88 65 -135 0 20 Trichlorofluoromethane 25.0 21.39 ug/L 86 53 -137 24 27 Vinyl chloride 25.0 26.98 ug/L 108 40 -137 15 24 Eurofins Denver Page 100 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-545303/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 545303 4-Bromofluorobenzene (Surr)78 -120 Surrogate 93 LCSD LCSD Qualifier Limits%Recovery 94Dibromofluoromethane (Surr)77 -120 901,2-Dichloroethane-d4 (Surr)70 -127 96Toluene-d8 (Surr)80 -125 Client Sample ID: Method BlankLab Sample ID: MB 280-545459/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 545459 RL MDL Acetone ND 10.0 ug/L 08/05/21 12:38 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 08/05/21 12:38 1Benzene ND 1.00 ug/L 08/05/21 12:38 1Bromoform ND 2.00 ug/L 08/05/21 12:38 1Bromomethane ND 6.00 ug/L 08/05/21 12:38 12-Butanone (MEK) ND 2.00 ug/L 08/05/21 12:38 1Carbon disulfide ND 1.00 ug/L 08/05/21 12:38 1Carbon tetrachloride ND 1.00 ug/L 08/05/21 12:38 1Chlorobenzene ND 1.00 ug/L 08/05/21 12:38 1Chlorobromomethane ND 1.00 ug/L 08/05/21 12:38 1Chlorodibromomethane ND 2.00 ug/L 08/05/21 12:38 1Chloroethane ND 1.00 ug/L 08/05/21 12:38 1Chloroform ND 2.00 ug/L 08/05/21 12:38 1Chloromethane ND 1.00 ug/L 08/05/21 12:38 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/05/21 12:38 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/05/21 12:38 1Cyclohexane ND 5.00 ug/L 08/05/21 12:38 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/05/21 12:38 11,2-Dibromoethane ND 1.00 ug/L 08/05/21 12:38 11,2-Dichlorobenzene ND 1.00 ug/L 08/05/21 12:38 11,3-Dichlorobenzene ND 1.00 ug/L 08/05/21 12:38 11,4-Dichlorobenzene ND 1.00 ug/L 08/05/21 12:38 1Dichlorobromomethane ND 2.00 ug/L 08/05/21 12:38 1Dichlorodifluoromethane ND 1.00 ug/L 08/05/21 12:38 11,1-Dichloroethane ND 1.00 ug/L 08/05/21 12:38 11,2-Dichloroethane ND 1.00 ug/L 08/05/21 12:38 11,1-Dichloroethene ND 1.00 ug/L 08/05/21 12:38 11,2-Dichloropropane ND 200 ug/L 08/05/21 12:38 11,4-Dioxane ND 1.00 ug/L 08/05/21 12:38 1Ethylbenzene ND 5.00 ug/L 08/05/21 12:38 12-Hexanone ND 1.00 ug/L 08/05/21 12:38 1Isopropylbenzene ND 5.00 ug/L 08/05/21 12:38 1Methyl acetate ND 1.00 ug/L 08/05/21 12:38 1Methylcyclohexane ND 2.00 ug/L 08/05/21 12:38 1Methylene Chloride ND 5.00 ug/L 08/05/21 12:38 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 08/05/21 12:38 1Methyl tert-butyl ether ND 2.00 ug/L 08/05/21 12:38 1m-Xylene & p-Xylene ND 1.00 ug/L 08/05/21 12:38 1o-Xylene Eurofins Denver Page 101 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-545459/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 545459 RL MDL Styrene ND 1.00 ug/L 08/05/21 12:38 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 08/05/21 12:38 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/05/21 12:38 1Tetrachloroethene ND 1.00 ug/L 08/05/21 12:38 1Toluene ND 1.00 ug/L 08/05/21 12:38 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/05/21 12:38 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/05/21 12:38 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/05/21 12:38 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/05/21 12:38 11,1,1-Trichloroethane ND 1.00 ug/L 08/05/21 12:38 11,1,2-Trichloroethane ND 1.00 ug/L 08/05/21 12:38 1Trichloroethene ND 2.00 ug/L 08/05/21 12:38 1Trichlorofluoromethane ND 3.00 ug/L 08/05/21 12:38 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/05/21 12:38 1Vinyl chloride 4-Bromofluorobenzene (Surr)107 78 -120 08/05/21 12:38 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 97 08/05/21 12:38 1Dibromofluoromethane (Surr)77 -120 106 08/05/21 12:38 11,2-Dichloroethane-d4 (Surr)70 -127 106 08/05/21 12:38 1Toluene-d8 (Surr)80 -125 Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-545459/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 545459 Acetone 100 99.02 ug/L 99 39 -156 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 25.0 25.00 ug/L 100 65 -135 Bromoform 25.0 18.83 ug/L 75 62 -135 Bromomethane 25.0 22.56 ug/L 90 45 -135 2-Butanone (MEK)100 101.4 ug/L 101 44 -177 Carbon disulfide 25.0 25.01 ug/L 100 55 -143 Carbon tetrachloride 25.0 26.00 ug/L 104 65 -135 Chlorobenzene 25.0 24.93 ug/L 100 65 -135 Chlorobromomethane 25.0 26.07 ug/L 104 65 -135 Chlorodibromomethane 25.0 24.20 ug/L 97 65 -135 Chloroethane 25.0 23.45 ug/L 94 46 -136 Chloroform 25.0 25.88 ug/L 104 65 -135 Chloromethane 25.0 25.04 ug/L 100 34 -145 cis-1,2-Dichloroethene 25.0 23.94 ug/L 96 65 -135 cis-1,3-Dichloropropene 25.0 25.68 ug/L 103 65 -135 1,2-Dibromo-3-Chloropropane 25.0 19.41 ug/L 78 57 -135 1,2-Dibromoethane 25.0 24.82 ug/L 99 65 -135 1,2-Dichlorobenzene 25.0 23.30 ug/L 93 65 -135 1,3-Dichlorobenzene 25.0 24.24 ug/L 97 65 -135 1,4-Dichlorobenzene 25.0 24.27 ug/L 97 65 -135 Dichlorobromomethane 25.0 25.27 ug/L 101 65 -135 Dichlorodifluoromethane 25.0 16.73 ug/L 67 43 -142 Eurofins Denver Page 102 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-545459/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 545459 1,1-Dichloroethane 25.0 26.52 ug/L 106 65 -135 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane 25.0 25.47 ug/L 102 65 -135 1,1-Dichloroethene 25.0 23.50 ug/L 94 65 -136 1,2-Dichloropropane 25.0 27.84 ug/L 111 64 -135 Ethylbenzene 25.0 25.88 ug/L 104 65 -135 2-Hexanone 100 114.0 ug/L 114 57 -139 Isopropylbenzene 25.0 25.63 ug/L 103 65 -135 Methylene Chloride 25.0 23.26 ug/L 93 54 -141 4-Methyl-2-pentanone (MIBK)100 104.0 ug/L 104 60 -150 Methyl tert-butyl ether 25.0 25.64 ug/L 103 54 -135 m-Xylene & p-Xylene 25.0 26.62 ug/L 106 65 -135 o-Xylene 25.0 25.77 ug/L 103 65 -135 Styrene 25.0 26.04 ug/L 104 65 -135 1,1,2,2-Tetrachloroethane 25.0 25.33 ug/L 101 58 -135 Tetrachloroethene 25.0 24.32 ug/L 97 65 -135 Toluene 25.0 24.42 ug/L 98 65 -135 trans-1,2-Dichloroethene 25.0 25.24 ug/L 101 65 -135 trans-1,3-Dichloropropene 25.0 24.99 ug/L 100 65 -135 1,2,3-Trichlorobenzene 25.0 23.57 ug/L 94 60 -135 1,2,4-Trichlorobenzene 25.0 24.23 ug/L 97 58 -135 1,1,1-Trichloroethane 25.0 25.33 ug/L 101 65 -135 1,1,2-Trichloroethane 25.0 24.57 ug/L 98 64 -135 Trichloroethene 25.0 26.23 ug/L 105 65 -135 Trichlorofluoromethane 25.0 25.48 ug/L 102 53 -137 Vinyl chloride 25.0 24.37 ug/L 97 40 -137 4-Bromofluorobenzene (Surr)78 -120 Surrogate 106 LCS LCS Qualifier Limits%Recovery 101Dibromofluoromethane (Surr)77 -120 1101,2-Dichloroethane-d4 (Surr)70 -127 104Toluene-d8 (Surr)80 -125 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-545459/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 545459 Acetone 100 91.13 ug/L 91 39 -156 8 23 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 25.0 21.62 ug/L 86 65 -135 15 20 Bromoform 25.0 18.61 ug/L 74 62 -135 1 27 Bromomethane 25.0 23.11 ug/L 92 45 -135 2 33 2-Butanone (MEK)100 94.74 ug/L 95 44 -177 7 32 Carbon disulfide 25.0 21.18 ug/L 85 55 -143 17 20 Carbon tetrachloride 25.0 22.18 ug/L 89 65 -135 16 21 Chlorobenzene 25.0 21.90 ug/L 88 65 -135 13 20 Chlorobromomethane 25.0 22.96 ug/L 92 65 -135 13 29 Chlorodibromomethane 25.0 22.79 ug/L 91 65 -135 6 20 Chloroethane 25.0 22.21 ug/L 89 46 -136 5 25 Eurofins Denver Page 103 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-545459/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 545459 Chloroform 25.0 22.65 ug/L 91 65 -135 13 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Chloromethane 25.0 23.43 ug/L 94 34 -145 7 24 cis-1,2-Dichloroethene 25.0 19.85 ug/L 79 65 -135 19 20 cis-1,3-Dichloropropene 25.0 23.03 ug/L 92 65 -135 11 26 1,2-Dibromo-3-Chloropropane 25.0 18.97 ug/L 76 57 -135 2 22 1,2-Dibromoethane 25.0 23.28 ug/L 93 65 -135 6 27 1,2-Dichlorobenzene 25.0 22.38 ug/L 90 65 -135 4 20 1,3-Dichlorobenzene 25.0 22.12 ug/L 88 65 -135 9 20 1,4-Dichlorobenzene 25.0 22.95 ug/L 92 65 -135 6 23 Dichlorobromomethane 25.0 21.95 ug/L 88 65 -135 14 20 Dichlorodifluoromethane 25.0 14.88 ug/L 60 43 -142 12 30 1,1-Dichloroethane 25.0 23.23 ug/L 93 65 -135 13 21 1,2-Dichloroethane 25.0 22.96 ug/L 92 65 -135 10 20 1,1-Dichloroethene 25.0 20.29 ug/L 81 65 -136 15 20 1,2-Dichloropropane 25.0 24.02 ug/L 96 64 -135 15 20 Ethylbenzene 25.0 23.44 ug/L 94 65 -135 10 20 2-Hexanone 100 100.9 ug/L 101 57 -139 12 25 Isopropylbenzene 25.0 23.02 ug/L 92 65 -135 11 20 Methylene Chloride 25.0 21.73 ug/L 87 54 -141 7 26 4-Methyl-2-pentanone (MIBK)100 93.23 ug/L 93 60 -150 11 22 Methyl tert-butyl ether 25.0 23.46 ug/L 94 54 -135 9 21 m-Xylene & p-Xylene 25.0 23.53 ug/L 94 65 -135 12 20 o-Xylene 25.0 23.86 ug/L 95 65 -135 8 20 Styrene 25.0 23.74 ug/L 95 65 -135 9 26 1,1,2,2-Tetrachloroethane 25.0 23.06 ug/L 92 58 -135 9 20 Tetrachloroethene 25.0 21.78 ug/L 87 65 -135 11 20 Toluene 25.0 21.92 ug/L 88 65 -135 11 20 trans-1,2-Dichloroethene 25.0 22.58 ug/L 90 65 -135 11 24 trans-1,3-Dichloropropene 25.0 21.66 ug/L 87 65 -135 14 26 1,2,3-Trichlorobenzene 25.0 22.86 ug/L 91 60 -135 3 36 1,2,4-Trichlorobenzene 25.0 22.86 ug/L 91 58 -135 6 25 1,1,1-Trichloroethane 25.0 22.59 ug/L 90 65 -135 11 20 1,1,2-Trichloroethane 25.0 21.43 ug/L 86 64 -135 14 27 Trichloroethene 25.0 22.67 ug/L 91 65 -135 15 20 Trichlorofluoromethane 25.0 22.18 ug/L 89 53 -137 14 27 Vinyl chloride 25.0 22.22 ug/L 89 40 -137 9 24 4-Bromofluorobenzene (Surr)78 -120 Surrogate 109 LCSD LCSD Qualifier Limits%Recovery 96Dibromofluoromethane (Surr)77 -120 1051,2-Dichloroethane-d4 (Surr)70 -127 104Toluene-d8 (Surr)80 -125 Eurofins Denver Page 104 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: MW-6Lab Sample ID: 280-151378-2 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 545459 Acetone ND 100 100.6 ug/L 101 39 -156 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 25.0 24.46 ug/L 98 65 -135 Bromoform ND 25.0 18.67 ug/L 75 62 -135 Bromomethane ND 25.0 22.12 ug/L 88 45 -135 2-Butanone (MEK)ND 100 108.7 ug/L 109 44 -177 Carbon disulfide ND 25.0 24.16 ug/L 97 55 -143 Carbon tetrachloride ND 25.0 25.15 ug/L 101 65 -135 Chlorobenzene ND 25.0 24.85 ug/L 99 65 -135 Chlorobromomethane ND 25.0 25.41 ug/L 102 65 -135 Chlorodibromomethane ND 25.0 23.05 ug/L 92 65 -135 Chloroethane ND 25.0 23.00 ug/L 92 46 -136 Chloroform ND 25.0 25.79 ug/L 103 65 -135 Chloromethane ND 25.0 25.57 ug/L 102 34 -145 cis-1,2-Dichloroethene 30.0 25.0 50.33 ug/L 81 65 -135 cis-1,3-Dichloropropene ND 25.0 24.48 ug/L 98 65 -135 1,2-Dibromo-3-Chloropropane ND 25.0 19.06 ug/L 76 57 -135 1,2-Dibromoethane ND 25.0 26.61 ug/L 106 65 -135 1,2-Dichlorobenzene ND 25.0 24.07 ug/L 96 65 -135 1,3-Dichlorobenzene ND 25.0 24.10 ug/L 96 65 -135 1,4-Dichlorobenzene ND 25.0 24.89 ug/L 100 65 -135 Dichlorobromomethane ND 25.0 24.82 ug/L 99 65 -135 Dichlorodifluoromethane ND 25.0 14.36 ug/L 57 43 -142 1,1-Dichloroethane ND 25.0 27.37 ug/L 106 65 -135 1,2-Dichloroethane ND 25.0 26.20 ug/L 105 65 -135 1,1-Dichloroethene ND 25.0 23.40 ug/L 94 65 -136 1,2-Dichloropropane ND 25.0 27.74 ug/L 111 64 -135 Ethylbenzene ND 25.0 25.02 ug/L 100 65 -135 2-Hexanone ND 100 112.6 ug/L 113 57 -139 Isopropylbenzene ND 25.0 25.81 ug/L 103 65 -135 Methylene Chloride ND 25.0 25.61 ug/L 102 54 -141 4-Methyl-2-pentanone (MIBK)ND 100 100.3 ug/L 100 60 -150 Methyl tert-butyl ether ND 25.0 25.42 ug/L 102 54 -135 m-Xylene & p-Xylene ND 25.0 25.93 ug/L 104 65 -135 o-Xylene ND 25.0 25.52 ug/L 102 65 -135 Styrene ND 25.0 25.52 ug/L 102 65 -135 1,1,2,2-Tetrachloroethane ND 25.0 24.56 ug/L 98 58 -135 Tetrachloroethene ND 25.0 22.12 ug/L 88 65 -135 Toluene ND 25.0 24.64 ug/L 99 65 -135 trans-1,2-Dichloroethene ND 25.0 25.76 ug/L 103 65 -135 trans-1,3-Dichloropropene ND 25.0 23.30 ug/L 93 65 -135 1,2,3-Trichlorobenzene ND 25.0 23.09 ug/L 89 60 -135 1,2,4-Trichlorobenzene ND 25.0 25.23 ug/L 101 58 -135 1,1,1-Trichloroethane ND 25.0 24.38 ug/L 98 65 -135 1,1,2-Trichloroethane ND 25.0 24.99 ug/L 100 64 -135 Trichloroethene 10.3 25.0 34.33 ug/L 96 65 -135 Trichlorofluoromethane ND 25.0 23.52 ug/L 94 53 -137 Vinyl chloride ND 25.0 23.40 ug/L 94 40 -137 Eurofins Denver Page 105 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: MW-6Lab Sample ID: 280-151378-2 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 545459 4-Bromofluorobenzene (Surr)78 -120 Surrogate 106 MS MS Qualifier Limits%Recovery 99Dibromofluoromethane (Surr)77 -120 1091,2-Dichloroethane-d4 (Surr)70 -127 103Toluene-d8 (Surr)80 -125 Client Sample ID: MW-6Lab Sample ID: 280-151378-2 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 545459 Acetone ND 100 95.79 ug/L 96 39 -156 5 23 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 25.0 24.21 ug/L 97 65 -135 1 20 Bromoform ND 25.0 20.03 ug/L 80 62 -135 7 27 Bromomethane ND 25.0 21.54 ug/L 86 45 -135 3 33 2-Butanone (MEK)ND 100 99.21 ug/L 99 44 -177 9 32 Carbon disulfide ND 25.0 23.80 ug/L 95 55 -143 2 20 Carbon tetrachloride ND 25.0 24.43 ug/L 98 65 -135 3 21 Chlorobenzene ND 25.0 24.52 ug/L 98 65 -135 1 20 Chlorobromomethane ND 25.0 25.57 ug/L 102 65 -135 1 29 Chlorodibromomethane ND 25.0 22.89 ug/L 92 65 -135 1 20 Chloroethane ND 25.0 21.21 ug/L 85 46 -136 8 25 Chloroform ND 25.0 25.44 ug/L 102 65 -135 1 20 Chloromethane ND 25.0 23.92 ug/L 96 34 -145 7 24 cis-1,2-Dichloroethene 30.0 25.0 49.71 ug/L 79 65 -135 1 20 cis-1,3-Dichloropropene ND 25.0 24.93 ug/L 100 65 -135 2 26 1,2-Dibromo-3-Chloropropane ND 25.0 17.35 ug/L 69 57 -135 9 22 1,2-Dibromoethane ND 25.0 23.84 ug/L 95 65 -135 11 27 1,2-Dichlorobenzene ND 25.0 23.69 ug/L 95 65 -135 2 20 1,3-Dichlorobenzene ND 25.0 23.67 ug/L 95 65 -135 2 20 1,4-Dichlorobenzene ND 25.0 23.77 ug/L 95 65 -135 5 23 Dichlorobromomethane ND 25.0 24.55 ug/L 98 65 -135 1 20 Dichlorodifluoromethane ND 25.0 12.12 ug/L 48 43 -142 17 30 1,1-Dichloroethane ND 25.0 27.71 ug/L 107 65 -135 1 21 1,2-Dichloroethane ND 25.0 25.05 ug/L 100 65 -135 5 20 1,1-Dichloroethene ND 25.0 23.89 ug/L 96 65 -136 2 20 1,2-Dichloropropane ND 25.0 26.86 ug/L 107 64 -135 3 20 Ethylbenzene ND 25.0 24.98 ug/L 100 65 -135 0 20 2-Hexanone ND 100 104.1 ug/L 104 57 -139 8 25 Isopropylbenzene ND 25.0 25.20 ug/L 101 65 -135 2 20 Methylene Chloride ND 25.0 25.84 ug/L 103 54 -141 1 26 4-Methyl-2-pentanone (MIBK)ND 100 95.56 ug/L 96 60 -150 5 22 Methyl tert-butyl ether ND 25.0 24.40 ug/L 98 54 -135 4 21 m-Xylene & p-Xylene ND 25.0 26.16 ug/L 105 65 -135 1 20 o-Xylene ND 25.0 26.48 ug/L 106 65 -135 4 20 Styrene ND 25.0 26.06 ug/L 104 65 -135 2 26 1,1,2,2-Tetrachloroethane ND 25.0 24.44 ug/L 98 58 -135 0 20 Tetrachloroethene ND 25.0 23.14 ug/L 93 65 -135 5 20 Toluene ND 25.0 23.78 ug/L 95 65 -135 4 20 Eurofins Denver Page 106 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: MW-6Lab Sample ID: 280-151378-2 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 545459 trans-1,2-Dichloroethene ND 25.0 24.38 ug/L 98 65 -135 6 24 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD trans-1,3-Dichloropropene ND 25.0 23.50 ug/L 94 65 -135 1 26 1,2,3-Trichlorobenzene ND 25.0 22.26 ug/L 86 60 -135 4 36 1,2,4-Trichlorobenzene ND 25.0 23.51 ug/L 94 58 -135 7 25 1,1,1-Trichloroethane ND 25.0 23.47 ug/L 94 65 -135 4 20 1,1,2-Trichloroethane ND 25.0 23.25 ug/L 93 64 -135 7 27 Trichloroethene 10.3 25.0 34.75 ug/L 98 65 -135 1 20 Trichlorofluoromethane ND 25.0 21.20 ug/L 85 53 -137 10 27 Vinyl chloride ND 25.0 22.08 ug/L 88 40 -137 6 24 4-Bromofluorobenzene (Surr)78 -120 Surrogate 106 MSD MSD Qualifier Limits%Recovery 100Dibromofluoromethane (Surr)77 -120 1081,2-Dichloroethane-d4 (Surr)70 -127 103Toluene-d8 (Surr)80 -125 Client Sample ID: Method BlankLab Sample ID: MB 280-546190/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 546190 RL MDL Acetone ND 10.0 ug/L 08/12/21 09:48 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 08/12/21 09:48 1Benzene ND 1.00 ug/L 08/12/21 09:48 1Bromoform ND 2.00 ug/L 08/12/21 09:48 1Bromomethane ND 6.00 ug/L 08/12/21 09:48 12-Butanone (MEK) ND 2.00 ug/L 08/12/21 09:48 1Carbon disulfide ND 1.00 ug/L 08/12/21 09:48 1Carbon tetrachloride ND 1.00 ug/L 08/12/21 09:48 1Chlorobenzene ND 1.00 ug/L 08/12/21 09:48 1Chlorobromomethane ND 1.00 ug/L 08/12/21 09:48 1Chlorodibromomethane ND 2.00 ug/L 08/12/21 09:48 1Chloroethane ND 1.00 ug/L 08/12/21 09:48 1Chloroform ND 2.00 ug/L 08/12/21 09:48 1Chloromethane ND 1.00 ug/L 08/12/21 09:48 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/12/21 09:48 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/12/21 09:48 1Cyclohexane ND 5.00 ug/L 08/12/21 09:48 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/12/21 09:48 11,2-Dibromoethane ND 1.00 ug/L 08/12/21 09:48 11,2-Dichlorobenzene ND 1.00 ug/L 08/12/21 09:48 11,3-Dichlorobenzene ND 1.00 ug/L 08/12/21 09:48 11,4-Dichlorobenzene ND 1.00 ug/L 08/12/21 09:48 1Dichlorobromomethane ND 2.00 ug/L 08/12/21 09:48 1Dichlorodifluoromethane ND 1.00 ug/L 08/12/21 09:48 11,1-Dichloroethane ND 1.00 ug/L 08/12/21 09:48 11,2-Dichloroethane ND 1.00 ug/L 08/12/21 09:48 11,1-Dichloroethene ND 1.00 ug/L 08/12/21 09:48 11,2-Dichloropropane Eurofins Denver Page 107 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-546190/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 546190 RL MDL 1,4-Dioxane ND 200 ug/L 08/12/21 09:48 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 08/12/21 09:48 1Ethylbenzene ND 5.00 ug/L 08/12/21 09:48 12-Hexanone ND 1.00 ug/L 08/12/21 09:48 1Isopropylbenzene ND 5.00 ug/L 08/12/21 09:48 1Methyl acetate ND 1.00 ug/L 08/12/21 09:48 1Methylcyclohexane ND 2.00 ug/L 08/12/21 09:48 1Methylene Chloride ND 5.00 ug/L 08/12/21 09:48 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 08/12/21 09:48 1Methyl tert-butyl ether ND 2.00 ug/L 08/12/21 09:48 1m-Xylene & p-Xylene ND 1.00 ug/L 08/12/21 09:48 1o-Xylene ND 1.00 ug/L 08/12/21 09:48 1Styrene ND 1.00 ug/L 08/12/21 09:48 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/12/21 09:48 1Tetrachloroethene ND 1.00 ug/L 08/12/21 09:48 1Toluene ND 1.00 ug/L 08/12/21 09:48 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/12/21 09:48 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/12/21 09:48 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/12/21 09:48 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/12/21 09:48 11,1,1-Trichloroethane ND 1.00 ug/L 08/12/21 09:48 11,1,2-Trichloroethane ND 1.00 ug/L 08/12/21 09:48 1Trichloroethene ND 2.00 ug/L 08/12/21 09:48 1Trichlorofluoromethane ND 3.00 ug/L 08/12/21 09:48 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/12/21 09:48 1Vinyl chloride 4-Bromofluorobenzene (Surr)101 78 -120 08/12/21 09:48 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 97 08/12/21 09:48 1Dibromofluoromethane (Surr)77 -120 99 08/12/21 09:48 11,2-Dichloroethane-d4 (Surr)70 -127 101 08/12/21 09:48 1Toluene-d8 (Surr)80 -125 Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-546190/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 546190 Acetone 100 97.06 ug/L 97 39 -156 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 25.0 25.12 ug/L 100 65 -135 Bromoform 25.0 18.95 ug/L 76 62 -135 Bromomethane 25.0 23.46 ug/L 94 45 -135 2-Butanone (MEK)100 94.52 ug/L 95 44 -177 Carbon disulfide 25.0 24.59 ug/L 98 55 -143 Carbon tetrachloride 25.0 22.34 ug/L 89 65 -135 Chlorobenzene 25.0 24.45 ug/L 98 65 -135 Chlorobromomethane 25.0 27.34 ug/L 109 65 -135 Chlorodibromomethane 25.0 21.20 ug/L 85 65 -135 Chloroethane 25.0 24.20 ug/L 97 46 -136 Eurofins Denver Page 108 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-546190/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 546190 Chloroform 25.0 25.45 ug/L 102 65 -135 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Chloromethane 25.0 23.62 ug/L 94 34 -145 cis-1,2-Dichloroethene 25.0 25.27 ug/L 101 65 -135 cis-1,3-Dichloropropene 25.0 25.79 ug/L 103 65 -135 1,2-Dibromo-3-Chloropropane 25.0 20.28 ug/L 81 57 -135 1,2-Dibromoethane 25.0 24.85 ug/L 99 65 -135 1,2-Dichlorobenzene 25.0 24.04 ug/L 96 65 -135 1,3-Dichlorobenzene 25.0 24.23 ug/L 97 65 -135 1,4-Dichlorobenzene 25.0 23.88 ug/L 96 65 -135 Dichlorobromomethane 25.0 22.87 ug/L 91 65 -135 Dichlorodifluoromethane 25.0 23.18 ug/L 93 43 -142 1,1-Dichloroethane 25.0 25.76 ug/L 103 65 -135 1,2-Dichloroethane 25.0 24.10 ug/L 96 65 -135 1,1-Dichloroethene 25.0 24.91 ug/L 100 65 -136 1,2-Dichloropropane 25.0 25.31 ug/L 101 64 -135 Ethylbenzene 25.0 25.01 ug/L 100 65 -135 2-Hexanone 100 98.05 ug/L 98 57 -139 Isopropylbenzene 25.0 24.98 ug/L 100 65 -135 Methylene Chloride 25.0 23.25 ug/L 93 54 -141 4-Methyl-2-pentanone (MIBK)100 100.3 ug/L 100 60 -150 Methyl tert-butyl ether 25.0 25.13 ug/L 101 54 -135 m-Xylene & p-Xylene 25.0 24.85 ug/L 99 65 -135 o-Xylene 25.0 25.00 ug/L 100 65 -135 Styrene 25.0 25.49 ug/L 102 65 -135 1,1,2,2-Tetrachloroethane 25.0 24.37 ug/L 97 58 -135 Tetrachloroethene 25.0 25.15 ug/L 101 65 -135 Toluene 25.0 25.06 ug/L 100 65 -135 trans-1,2-Dichloroethene 25.0 24.69 ug/L 99 65 -135 trans-1,3-Dichloropropene 25.0 25.69 ug/L 103 65 -135 1,2,3-Trichlorobenzene 25.0 22.69 ug/L 91 60 -135 1,2,4-Trichlorobenzene 25.0 23.47 ug/L 94 58 -135 1,1,1-Trichloroethane 25.0 25.16 ug/L 101 65 -135 1,1,2-Trichloroethane 25.0 25.22 ug/L 101 64 -135 Trichloroethene 25.0 24.28 ug/L 97 65 -135 Trichlorofluoromethane 25.0 26.30 ug/L 105 53 -137 Vinyl chloride 25.0 23.78 ug/L 95 40 -137 4-Bromofluorobenzene (Surr)78 -120 Surrogate 100 LCS LCS Qualifier Limits%Recovery 101Dibromofluoromethane (Surr)77 -120 1001,2-Dichloroethane-d4 (Surr)70 -127 100Toluene-d8 (Surr)80 -125 Eurofins Denver Page 109 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-546190/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 546190 Acetone 100 93.08 ug/L 93 39 -156 4 23 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 25.0 24.54 ug/L 98 65 -135 2 20 Bromoform 25.0 18.99 ug/L 76 62 -135 0 27 Bromomethane 25.0 23.10 ug/L 92 45 -135 2 33 2-Butanone (MEK)100 91.72 ug/L 92 44 -177 3 32 Carbon disulfide 25.0 23.74 ug/L 95 55 -143 4 20 Carbon tetrachloride 25.0 22.08 ug/L 88 65 -135 1 21 Chlorobenzene 25.0 24.21 ug/L 97 65 -135 1 20 Chlorobromomethane 25.0 27.16 ug/L 109 65 -135 1 29 Chlorodibromomethane 25.0 21.01 ug/L 84 65 -135 1 20 Chloroethane 25.0 23.68 ug/L 95 46 -136 2 25 Chloroform 25.0 24.91 ug/L 100 65 -135 2 20 Chloromethane 25.0 22.72 ug/L 91 34 -145 4 24 cis-1,2-Dichloroethene 25.0 25.04 ug/L 100 65 -135 1 20 cis-1,3-Dichloropropene 25.0 25.26 ug/L 101 65 -135 2 26 1,2-Dibromo-3-Chloropropane 25.0 20.49 ug/L 82 57 -135 1 22 1,2-Dibromoethane 25.0 24.47 ug/L 98 65 -135 2 27 1,2-Dichlorobenzene 25.0 23.93 ug/L 96 65 -135 0 20 1,3-Dichlorobenzene 25.0 23.81 ug/L 95 65 -135 2 20 1,4-Dichlorobenzene 25.0 23.58 ug/L 94 65 -135 1 23 Dichlorobromomethane 25.0 22.50 ug/L 90 65 -135 2 20 Dichlorodifluoromethane 25.0 22.16 ug/L 89 43 -142 5 30 1,1-Dichloroethane 25.0 25.16 ug/L 101 65 -135 2 21 1,2-Dichloroethane 25.0 23.73 ug/L 95 65 -135 2 20 1,1-Dichloroethene 25.0 24.34 ug/L 97 65 -136 2 20 1,2-Dichloropropane 25.0 24.86 ug/L 99 64 -135 2 20 Ethylbenzene 25.0 24.40 ug/L 98 65 -135 2 20 2-Hexanone 100 95.29 ug/L 95 57 -139 3 25 Isopropylbenzene 25.0 24.39 ug/L 98 65 -135 2 20 Methylene Chloride 25.0 22.78 ug/L 91 54 -141 2 26 4-Methyl-2-pentanone (MIBK)100 97.04 ug/L 97 60 -150 3 22 Methyl tert-butyl ether 25.0 24.74 ug/L 99 54 -135 2 21 m-Xylene & p-Xylene 25.0 24.43 ug/L 98 65 -135 2 20 o-Xylene 25.0 24.64 ug/L 99 65 -135 1 20 Styrene 25.0 25.07 ug/L 100 65 -135 2 26 1,1,2,2-Tetrachloroethane 25.0 23.92 ug/L 96 58 -135 2 20 Tetrachloroethene 25.0 24.40 ug/L 98 65 -135 3 20 Toluene 25.0 24.43 ug/L 98 65 -135 3 20 trans-1,2-Dichloroethene 25.0 24.39 ug/L 98 65 -135 1 24 trans-1,3-Dichloropropene 25.0 25.17 ug/L 101 65 -135 2 26 1,2,3-Trichlorobenzene 25.0 22.49 ug/L 90 60 -135 1 36 1,2,4-Trichlorobenzene 25.0 23.33 ug/L 93 58 -135 1 25 1,1,1-Trichloroethane 25.0 24.56 ug/L 98 65 -135 2 20 1,1,2-Trichloroethane 25.0 24.66 ug/L 99 64 -135 2 27 Trichloroethene 25.0 23.90 ug/L 96 65 -135 2 20 Trichlorofluoromethane 25.0 25.17 ug/L 101 53 -137 4 27 Vinyl chloride 25.0 23.00 ug/L 92 40 -137 3 24 Eurofins Denver Page 110 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-546190/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 546190 4-Bromofluorobenzene (Surr)78 -120 Surrogate 100 LCSD LCSD Qualifier Limits%Recovery 101Dibromofluoromethane (Surr)77 -120 991,2-Dichloroethane-d4 (Surr)70 -127 100Toluene-d8 (Surr)80 -125 Client Sample ID: Method BlankLab Sample ID: MB 280-546332/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 546332 RL MDL cis-1,2-Dichloroethene ND 1.00 ug/L 08/13/21 08:49 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 4-Bromofluorobenzene (Surr)99 78 -120 08/13/21 08:49 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 98 08/13/21 08:49 1Dibromofluoromethane (Surr)77 -120 99 08/13/21 08:49 11,2-Dichloroethane-d4 (Surr)70 -127 100 08/13/21 08:49 1Toluene-d8 (Surr)80 -125 Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-546332/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 546332 cis-1,2-Dichloroethene 25.0 25.21 ug/L 101 65 -135 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 4-Bromofluorobenzene (Surr)78 -120 Surrogate 99 LCS LCS Qualifier Limits%Recovery 100Dibromofluoromethane (Surr)77 -120 981,2-Dichloroethane-d4 (Surr)70 -127 100Toluene-d8 (Surr)80 -125 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-546332/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 546332 cis-1,2-Dichloroethene 25.0 25.38 ug/L 102 65 -135 1 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 4-Bromofluorobenzene (Surr)78 -120 Surrogate 98 LCSD LCSD Qualifier Limits%Recovery 102Dibromofluoromethane (Surr)77 -120 981,2-Dichloroethane-d4 (Surr)70 -127 99Toluene-d8 (Surr)80 -125 Eurofins Denver Page 111 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-547120/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 547120 RL MDL Acetone ND 10.0 ug/L 08/20/21 10:19 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1.00 ug/L 08/20/21 10:19 1Benzene ND 1.00 ug/L 08/20/21 10:19 1Bromoform ND 2.00 ug/L 08/20/21 10:19 1Bromomethane ND 6.00 ug/L 08/20/21 10:19 12-Butanone (MEK) ND 2.00 ug/L 08/20/21 10:19 1Carbon disulfide ND 1.00 ug/L 08/20/21 10:19 1Carbon tetrachloride ND 1.00 ug/L 08/20/21 10:19 1Chlorobenzene ND 1.00 ug/L 08/20/21 10:19 1Chlorobromomethane ND 1.00 ug/L 08/20/21 10:19 1Chlorodibromomethane ND 2.00 ug/L 08/20/21 10:19 1Chloroethane ND 1.00 ug/L 08/20/21 10:19 1Chloroform ND 2.00 ug/L 08/20/21 10:19 1Chloromethane ND 1.00 ug/L 08/20/21 10:19 1cis-1,2-Dichloroethene ND 1.00 ug/L 08/20/21 10:19 1cis-1,3-Dichloropropene ND 2.00 ug/L 08/20/21 10:19 1Cyclohexane ND 5.00 ug/L 08/20/21 10:19 11,2-Dibromo-3-Chloropropane ND 1.00 ug/L 08/20/21 10:19 11,2-Dibromoethane ND 1.00 ug/L 08/20/21 10:19 11,2-Dichlorobenzene ND 1.00 ug/L 08/20/21 10:19 11,3-Dichlorobenzene ND 1.00 ug/L 08/20/21 10:19 11,4-Dichlorobenzene ND 1.00 ug/L 08/20/21 10:19 1Dichlorobromomethane ND 2.00 ug/L 08/20/21 10:19 1Dichlorodifluoromethane ND 1.00 ug/L 08/20/21 10:19 11,1-Dichloroethane ND 1.00 ug/L 08/20/21 10:19 11,2-Dichloroethane ND 1.00 ug/L 08/20/21 10:19 11,1-Dichloroethene ND 1.00 ug/L 08/20/21 10:19 11,2-Dichloropropane ND 200 ug/L 08/20/21 10:19 11,4-Dioxane ND 1.00 ug/L 08/20/21 10:19 1Ethylbenzene ND 5.00 ug/L 08/20/21 10:19 12-Hexanone ND 1.00 ug/L 08/20/21 10:19 1Isopropylbenzene ND 5.00 ug/L 08/20/21 10:19 1Methyl acetate ND 1.00 ug/L 08/20/21 10:19 1Methylcyclohexane ND 2.00 ug/L 08/20/21 10:19 1Methylene Chloride ND 5.00 ug/L 08/20/21 10:19 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 08/20/21 10:19 1Methyl tert-butyl ether ND 2.00 ug/L 08/20/21 10:19 1m-Xylene & p-Xylene ND 1.00 ug/L 08/20/21 10:19 1o-Xylene ND 1.00 ug/L 08/20/21 10:19 1Styrene ND 1.00 ug/L 08/20/21 10:19 11,1,2,2-Tetrachloroethane ND 1.00 ug/L 08/20/21 10:19 1Tetrachloroethene ND 1.00 ug/L 08/20/21 10:19 1Toluene ND 1.00 ug/L 08/20/21 10:19 1trans-1,2-Dichloroethene ND 3.00 ug/L 08/20/21 10:19 1trans-1,3-Dichloropropene ND 1.00 ug/L 08/20/21 10:19 11,2,3-Trichlorobenzene ND 1.00 ug/L 08/20/21 10:19 11,2,4-Trichlorobenzene ND 1.00 ug/L 08/20/21 10:19 11,1,1-Trichloroethane ND 1.00 ug/L 08/20/21 10:19 11,1,2-Trichloroethane Eurofins Denver Page 112 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-547120/9 Matrix: Water Prep Type: Total/NA Analysis Batch: 547120 RL MDL Trichloroethene ND 1.00 ug/L 08/20/21 10:19 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 2.00 ug/L 08/20/21 10:19 1Trichlorofluoromethane ND 3.00 ug/L 08/20/21 10:19 11,1,2-Trichlorotrifluoroethane ND 1.00 ug/L 08/20/21 10:19 1Vinyl chloride 4-Bromofluorobenzene (Surr)101 78 -120 08/20/21 10:19 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 98 08/20/21 10:19 1Dibromofluoromethane (Surr)77 -120 101 08/20/21 10:19 11,2-Dichloroethane-d4 (Surr)70 -127 101 08/20/21 10:19 1Toluene-d8 (Surr)80 -125 Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-547120/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 547120 Acetone 100 104.1 ug/L 104 39 -156 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 25.0 24.44 ug/L 98 65 -135 Bromoform 25.0 21.44 ug/L 86 62 -135 Bromomethane 25.0 22.73 ug/L 91 45 -135 2-Butanone (MEK)100 93.10 ug/L 93 44 -177 Carbon disulfide 25.0 24.86 ug/L 99 55 -143 Carbon tetrachloride 25.0 23.67 ug/L 95 65 -135 Chlorobenzene 25.0 24.16 ug/L 97 65 -135 Chlorobromomethane 25.0 25.37 ug/L 101 65 -135 Chlorodibromomethane 25.0 23.41 ug/L 94 65 -135 Chloroethane 25.0 24.37 ug/L 97 46 -136 Chloroform 25.0 24.65 ug/L 99 65 -135 Chloromethane 25.0 21.42 ug/L 86 34 -145 cis-1,2-Dichloroethene 25.0 24.47 ug/L 98 65 -135 cis-1,3-Dichloropropene 25.0 25.88 ug/L 104 65 -135 1,2-Dibromo-3-Chloropropane 25.0 22.20 ug/L 89 57 -135 1,2-Dibromoethane 25.0 26.61 ug/L 106 65 -135 1,2-Dichlorobenzene 25.0 24.31 ug/L 97 65 -135 1,3-Dichlorobenzene 25.0 24.32 ug/L 97 65 -135 1,4-Dichlorobenzene 25.0 23.48 ug/L 94 65 -135 Dichlorobromomethane 25.0 25.55 ug/L 102 65 -135 Dichlorodifluoromethane 25.0 24.56 ug/L 98 43 -142 1,1-Dichloroethane 25.0 24.94 ug/L 100 65 -135 1,2-Dichloroethane 25.0 23.73 ug/L 95 65 -135 1,1-Dichloroethene 25.0 25.05 ug/L 100 65 -136 1,2-Dichloropropane 25.0 24.86 ug/L 99 64 -135 Ethylbenzene 25.0 24.49 ug/L 98 65 -135 2-Hexanone 100 109.3 ug/L 109 57 -139 Isopropylbenzene 25.0 24.89 ug/L 100 65 -135 Methylene Chloride 25.0 24.96 ug/L 100 54 -141 4-Methyl-2-pentanone (MIBK)100 106.6 ug/L 107 60 -150 Methyl tert-butyl ether 25.0 25.74 ug/L 103 54 -135 Eurofins Denver Page 113 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-547120/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 547120 m-Xylene & p-Xylene 25.0 24.55 ug/L 98 65 -135 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits o-Xylene 25.0 24.90 ug/L 100 65 -135 Styrene 25.0 26.02 ug/L 104 65 -135 1,1,2,2-Tetrachloroethane 25.0 25.29 ug/L 101 58 -135 Tetrachloroethene 25.0 25.14 ug/L 101 65 -135 Toluene 25.0 24.54 ug/L 98 65 -135 trans-1,2-Dichloroethene 25.0 24.65 ug/L 99 65 -135 trans-1,3-Dichloropropene 25.0 24.45 ug/L 98 65 -135 1,2,3-Trichlorobenzene 25.0 23.42 ug/L 94 60 -135 1,2,4-Trichlorobenzene 25.0 24.42 ug/L 98 58 -135 1,1,1-Trichloroethane 25.0 25.41 ug/L 102 65 -135 1,1,2-Trichloroethane 25.0 25.65 ug/L 103 64 -135 Trichloroethene 25.0 24.75 ug/L 99 65 -135 Trichlorofluoromethane 25.0 24.64 ug/L 99 53 -137 Vinyl chloride 25.0 24.05 ug/L 96 40 -137 4-Bromofluorobenzene (Surr)78 -120 Surrogate 100 LCS LCS Qualifier Limits%Recovery 102Dibromofluoromethane (Surr)77 -120 1021,2-Dichloroethane-d4 (Surr)70 -127 99Toluene-d8 (Surr)80 -125 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-547120/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 547120 Acetone 100 101.3 ug/L 101 39 -156 3 23 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 25.0 24.58 ug/L 98 65 -135 1 20 Bromoform 25.0 21.13 ug/L 85 62 -135 1 27 Bromomethane 25.0 23.35 ug/L 93 45 -135 3 33 2-Butanone (MEK)100 91.28 ug/L 91 44 -177 2 32 Carbon disulfide 25.0 25.57 ug/L 102 55 -143 3 20 Carbon tetrachloride 25.0 24.03 ug/L 96 65 -135 2 21 Chlorobenzene 25.0 24.35 ug/L 97 65 -135 1 20 Chlorobromomethane 25.0 25.37 ug/L 101 65 -135 0 29 Chlorodibromomethane 25.0 23.41 ug/L 94 65 -135 0 20 Chloroethane 25.0 23.83 ug/L 95 46 -136 2 25 Chloroform 25.0 24.69 ug/L 99 65 -135 0 20 Chloromethane 25.0 20.79 ug/L 83 34 -145 3 24 cis-1,2-Dichloroethene 25.0 24.63 ug/L 99 65 -135 1 20 cis-1,3-Dichloropropene 25.0 26.01 ug/L 104 65 -135 1 26 1,2-Dibromo-3-Chloropropane 25.0 22.34 ug/L 89 57 -135 1 22 1,2-Dibromoethane 25.0 26.39 ug/L 106 65 -135 1 27 1,2-Dichlorobenzene 25.0 24.78 ug/L 99 65 -135 2 20 1,3-Dichlorobenzene 25.0 24.71 ug/L 99 65 -135 2 20 1,4-Dichlorobenzene 25.0 23.79 ug/L 95 65 -135 1 23 Dichlorobromomethane 25.0 25.36 ug/L 101 65 -135 1 20 Eurofins Denver Page 114 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-547120/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 547120 Dichlorodifluoromethane 25.0 24.85 ug/L 99 43 -142 1 30 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,1-Dichloroethane 25.0 25.23 ug/L 101 65 -135 1 21 1,2-Dichloroethane 25.0 23.57 ug/L 94 65 -135 1 20 1,1-Dichloroethene 25.0 25.72 ug/L 103 65 -136 3 20 1,2-Dichloropropane 25.0 24.72 ug/L 99 64 -135 1 20 Ethylbenzene 25.0 25.11 ug/L 100 65 -135 2 20 2-Hexanone 100 107.2 ug/L 107 57 -139 2 25 Isopropylbenzene 25.0 25.67 ug/L 103 65 -135 3 20 Methylene Chloride 25.0 24.55 ug/L 98 54 -141 2 26 4-Methyl-2-pentanone (MIBK)100 102.0 ug/L 102 60 -150 4 22 Methyl tert-butyl ether 25.0 24.82 ug/L 99 54 -135 4 21 m-Xylene & p-Xylene 25.0 24.82 ug/L 99 65 -135 1 20 o-Xylene 25.0 24.99 ug/L 100 65 -135 0 20 Styrene 25.0 26.09 ug/L 104 65 -135 0 26 1,1,2,2-Tetrachloroethane 25.0 25.46 ug/L 102 58 -135 1 20 Tetrachloroethene 25.0 26.05 ug/L 104 65 -135 4 20 Toluene 25.0 24.65 ug/L 99 65 -135 0 20 trans-1,2-Dichloroethene 25.0 24.99 ug/L 100 65 -135 1 24 trans-1,3-Dichloropropene 25.0 24.17 ug/L 97 65 -135 1 26 1,2,3-Trichlorobenzene 25.0 23.67 ug/L 95 60 -135 1 36 1,2,4-Trichlorobenzene 25.0 25.02 ug/L 100 58 -135 2 25 1,1,1-Trichloroethane 25.0 25.91 ug/L 104 65 -135 2 20 1,1,2-Trichloroethane 25.0 25.13 ug/L 101 64 -135 2 27 Trichloroethene 25.0 24.99 ug/L 100 65 -135 1 20 Trichlorofluoromethane 25.0 25.00 ug/L 100 53 -137 1 27 Vinyl chloride 25.0 23.96 ug/L 96 40 -137 0 24 4-Bromofluorobenzene (Surr)78 -120 Surrogate 100 LCSD LCSD Qualifier Limits%Recovery 101Dibromofluoromethane (Surr)77 -120 981,2-Dichloroethane-d4 (Surr)70 -127 100Toluene-d8 (Surr)80 -125 Client Sample ID: MW-10Lab Sample ID: 280-151937-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 547120 Acetone ND 500 513.7 ug/L 103 39 -156 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 125 117.5 ug/L 94 65 -135 Bromoform ND 125 93.30 ug/L 75 62 -135 Bromomethane ND 125 109.0 ug/L 87 45 -135 2-Butanone (MEK)ND 500 460.6 ug/L 92 44 -177 Carbon disulfide ND 125 114.2 ug/L 91 55 -143 Carbon tetrachloride ND 125 108.2 ug/L 87 65 -135 Chlorobenzene ND 125 116.7 ug/L 93 65 -135 Chlorobromomethane ND 125 122.6 ug/L 98 65 -135 Chlorodibromomethane ND 125 107.5 ug/L 86 65 -135 Eurofins Denver Page 115 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: MW-10Lab Sample ID: 280-151937-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 547120 Chloroethane ND 125 118.2 ug/L 95 46 -136 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Chloroform ND 125 117.8 ug/L 94 65 -135 Chloromethane ND 125 109.9 ug/L 88 34 -145 cis-1,2-Dichloroethene 434 125 536.1 ug/L 81 65 -135 cis-1,3-Dichloropropene ND 125 119.6 ug/L 96 65 -135 1,2-Dibromo-3-Chloropropane ND 125 101.7 ug/L 81 57 -135 1,2-Dibromoethane ND 125 128.2 ug/L 103 65 -135 1,2-Dichlorobenzene ND 125 116.3 ug/L 93 65 -135 1,3-Dichlorobenzene ND 125 116.1 ug/L 93 65 -135 1,4-Dichlorobenzene ND 125 114.7 ug/L 92 65 -135 Dichlorobromomethane ND 125 118.3 ug/L 95 65 -135 Dichlorodifluoromethane ND 125 124.0 ug/L 99 43 -142 1,1-Dichloroethane ND 125 123.3 ug/L 96 65 -135 1,2-Dichloroethane ND 125 117.2 ug/L 94 65 -135 1,1-Dichloroethene 6.18 125 126.4 ug/L 96 65 -136 1,2-Dichloropropane ND 125 121.7 ug/L 97 64 -135 Ethylbenzene ND 125 118.1 ug/L 94 65 -135 2-Hexanone ND 500 531.2 ug/L 106 57 -139 Isopropylbenzene ND 125 119.0 ug/L 95 65 -135 Methylene Chloride ND 125 121.5 ug/L 97 54 -141 4-Methyl-2-pentanone (MIBK)ND 500 514.6 ug/L 103 60 -150 Methyl tert-butyl ether ND 125 119.2 ug/L 95 54 -135 m-Xylene & p-Xylene ND 125 116.3 ug/L 93 65 -135 o-Xylene ND 125 118.9 ug/L 95 65 -135 Styrene ND 125 124.1 ug/L 99 65 -135 1,1,2,2-Tetrachloroethane ND 125 123.6 ug/L 99 58 -135 Tetrachloroethene ND 125 121.2 ug/L 97 65 -135 Toluene ND 125 118.4 ug/L 95 65 -135 trans-1,2-Dichloroethene 13.8 125 131.3 ug/L 94 65 -135 trans-1,3-Dichloropropene ND 125 113.1 ug/L 90 65 -135 1,2,3-Trichlorobenzene ND 125 111.2 ug/L 89 60 -135 1,2,4-Trichlorobenzene ND 125 113.6 ug/L 91 58 -135 1,1,1-Trichloroethane ND 125 119.9 ug/L 96 65 -135 1,1,2-Trichloroethane ND 125 123.4 ug/L 99 64 -135 Trichloroethene ND 125 119.4 ug/L 96 65 -135 Trichlorofluoromethane ND 125 122.5 ug/L 98 53 -137 Vinyl chloride ND 125 123.9 ug/L 96 40 -137 4-Bromofluorobenzene (Surr)78 -120 Surrogate 100 MS MS Qualifier Limits%Recovery 101Dibromofluoromethane (Surr)77 -120 1011,2-Dichloroethane-d4 (Surr)70 -127 99Toluene-d8 (Surr)80 -125 Eurofins Denver Page 116 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: MW-10Lab Sample ID: 280-151937-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 547120 Acetone ND 500 518.6 ug/L 104 39 -156 1 23 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 125 124.9 ug/L 100 65 -135 6 20 Bromoform ND 125 99.90 ug/L 80 62 -135 7 27 Bromomethane ND 125 116.2 ug/L 93 45 -135 6 33 2-Butanone (MEK)ND 500 467.5 ug/L 93 44 -177 1 32 Carbon disulfide ND 125 124.2 ug/L 99 55 -143 8 20 Carbon tetrachloride ND 125 117.6 ug/L 94 65 -135 8 21 Chlorobenzene ND 125 124.4 ug/L 100 65 -135 6 20 Chlorobromomethane ND 125 128.7 ug/L 103 65 -135 5 29 Chlorodibromomethane ND 125 113.8 ug/L 91 65 -135 6 20 Chloroethane ND 125 121.8 ug/L 97 46 -136 3 25 Chloroform ND 125 125.9 ug/L 101 65 -135 7 20 Chloromethane ND 125 113.9 ug/L 91 34 -145 4 24 cis-1,2-Dichloroethene 434 125 546.5 ug/L 90 65 -135 2 20 cis-1,3-Dichloropropene ND 125 126.1 ug/L 101 65 -135 5 26 1,2-Dibromo-3-Chloropropane ND 125 107.6 ug/L 86 57 -135 6 22 1,2-Dibromoethane ND 125 134.2 ug/L 107 65 -135 5 27 1,2-Dichlorobenzene ND 125 125.1 ug/L 100 65 -135 7 20 1,3-Dichlorobenzene ND 125 123.7 ug/L 99 65 -135 6 20 1,4-Dichlorobenzene ND 125 122.1 ug/L 98 65 -135 6 23 Dichlorobromomethane ND 125 127.1 ug/L 102 65 -135 7 20 Dichlorodifluoromethane ND 125 127.3 ug/L 102 43 -142 3 30 1,1-Dichloroethane ND 125 129.7 ug/L 101 65 -135 5 21 1,2-Dichloroethane ND 125 121.2 ug/L 97 65 -135 3 20 1,1-Dichloroethene 6.18 125 134.0 ug/L 102 65 -136 6 20 1,2-Dichloropropane ND 125 126.8 ug/L 101 64 -135 4 20 Ethylbenzene ND 125 124.8 ug/L 100 65 -135 6 20 2-Hexanone ND 500 543.4 ug/L 109 57 -139 2 25 Isopropylbenzene ND 125 128.5 ug/L 103 65 -135 8 20 Methylene Chloride ND 125 128.8 ug/L 103 54 -141 6 26 4-Methyl-2-pentanone (MIBK)ND 500 528.2 ug/L 106 60 -150 3 22 Methyl tert-butyl ether ND 125 125.0 ug/L 100 54 -135 5 21 m-Xylene & p-Xylene ND 125 125.6 ug/L 100 65 -135 8 20 o-Xylene ND 125 124.7 ug/L 100 65 -135 5 20 Styrene ND 125 131.6 ug/L 105 65 -135 6 26 1,1,2,2-Tetrachloroethane ND 125 127.4 ug/L 102 58 -135 3 20 Tetrachloroethene ND 125 128.4 ug/L 103 65 -135 6 20 Toluene ND 125 124.8 ug/L 100 65 -135 5 20 trans-1,2-Dichloroethene 13.8 125 139.6 ug/L 101 65 -135 6 24 trans-1,3-Dichloropropene ND 125 119.1 ug/L 95 65 -135 5 26 1,2,3-Trichlorobenzene ND 125 120.6 ug/L 97 60 -135 8 36 1,2,4-Trichlorobenzene ND 125 124.6 ug/L 100 58 -135 9 25 1,1,1-Trichloroethane ND 125 128.7 ug/L 103 65 -135 7 20 1,1,2-Trichloroethane ND 125 129.2 ug/L 103 64 -135 5 27 Trichloroethene ND 125 126.6 ug/L 101 65 -135 6 20 Trichlorofluoromethane ND 125 127.0 ug/L 102 53 -137 4 27 Vinyl chloride ND 125 127.4 ug/L 99 40 -137 3 24 Eurofins Denver Page 117 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: MW-10Lab Sample ID: 280-151937-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 547120 4-Bromofluorobenzene (Surr)78 -120 Surrogate 101 MSD MSD Qualifier Limits%Recovery 100Dibromofluoromethane (Surr)77 -120 991,2-Dichloroethane-d4 (Surr)70 -127 100Toluene-d8 (Surr)80 -125 Method: 8260B SIM - Volatile Organic Compounds (GC/MS) Client Sample ID: Method BlankLab Sample ID: MB 280-545070/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 545070 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/02/21 19:08 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)104 70 -127 08/02/21 19:08 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-545070/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 545070 1,4-Dioxane 25.0 23.86 ug/L 95 25 -141 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 102 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-545070/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 545070 1,4-Dioxane 25.0 25.52 ug/L 102 25 -141 7 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 101 LCSD LCSD Qualifier Limits%Recovery Client Sample ID: Method BlankLab Sample ID: MB 280-545187/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 545187 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/03/21 14:04 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)104 70 -127 08/03/21 14:04 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery Eurofins Denver Page 118 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-545187/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 545187 1,4-Dioxane 25.0 24.20 ug/L 97 25 -141 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 103 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-545187/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 545187 1,4-Dioxane 25.0 23.25 ug/L 93 25 -141 4 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 103 LCSD LCSD Qualifier Limits%Recovery Client Sample ID: Method BlankLab Sample ID: MB 280-545711/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 545711 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/06/21 15:43 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/06/21 15:43 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-545711/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 545711 1,4-Dioxane 25.0 24.30 ug/L 97 25 -141 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 104 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-545711/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 545711 1,4-Dioxane 25.0 24.84 ug/L 99 25 -141 2 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 103 LCSD LCSD Qualifier Limits%Recovery Eurofins Denver Page 119 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 280-151220-H-9 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 545711 1,4-Dioxane 0.612 J 25.0 24.86 ug/L 97 25 -141 2 20 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 105 MSD MSD Qualifier Limits%Recovery Client Sample ID: Matrix SpikeLab Sample ID: 280-151220-K-9 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 545711 1,4-Dioxane 0.612 J 25.0 24.49 ug/L 96 25 -141 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 104 MS MS Qualifier Limits%Recovery Client Sample ID: Method BlankLab Sample ID: MB 280-545864/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 545864 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/09/21 15:14 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)106 70 -127 08/09/21 15:14 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-545864/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 545864 1,4-Dioxane 25.0 24.18 ug/L 97 25 -141 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 104 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-545864/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 545864 1,4-Dioxane 25.0 26.76 ug/L 107 25 -141 10 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 104 LCSD LCSD Qualifier Limits%Recovery Eurofins Denver Page 120 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 280-546098/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 546098 RL MDL 1,4-Dioxane 0.3355 J 1.40 0.267 ug/L 08/11/21 11:18 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)109 70 -127 08/11/21 11:18 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-546098/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 546098 1,4-Dioxane 50.0 27.12 ug/L 54 25 -141 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 106 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-546098/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 546098 1,4-Dioxane 25.0 27.16 ug/L 109 25 -141 0 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 107 LCSD LCSD Qualifier Limits%Recovery Client Sample ID: Method BlankLab Sample ID: MB 280-546258/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 546258 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/12/21 12:27 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)111 70 -127 08/12/21 12:27 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-546258/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 546258 1,4-Dioxane 25.0 26.30 ug/L 105 25 -141 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 107 LCS LCS Qualifier Limits%Recovery Eurofins Denver Page 121 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260B SIM - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-546258/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 546258 1,4-Dioxane 25.0 25.17 ug/L 101 25 -141 4 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 107 LCSD LCSD Qualifier Limits%Recovery Client Sample ID: Method BlankLab Sample ID: MB 280-547429/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 547429 RL MDL 1,4-Dioxane ND 1.40 0.267 ug/L 08/23/21 16:32 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier 1,2-Dichloroethane-d4 (Surr)100 70 -127 08/23/21 16:32 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 280-547429/1002 Matrix: Water Prep Type: Total/NA Analysis Batch: 547429 1,4-Dioxane 25.0 25.71 ug/L 103 25 -141 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 99 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 280-547429/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 547429 1,4-Dioxane 25.0 25.65 ug/L 103 25 -141 0 20 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,2-Dichloroethane-d4 (Surr)70 -127 Surrogate 99 LCSD LCSD Qualifier Limits%Recovery Eurofins Denver Page 122 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA Analysis Batch: 545004 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B280-151322-1 B-1 Total/NA Water 8260B280-151322-2 B-3 Total/NA Water 8260B280-151322-3 MW-2 Total/NA Water 8260B280-151322-4 MW-2A Total/NA Water 8260B280-151322-5 MW-2I Total/NA Water 8260B280-151322-6 MW-3 Total/NA Water 8260B280-151322-7 MW-4 Total/NA Water 8260B280-151322-8 MW-4I Total/NA Water 8260B280-151322-9 MW-5 Total/NA Water 8260B280-151322-10 MW-5A Total/NA Water 8260B280-151322-11 MW-5I Total/NA Water 8260B280-151322-12 MW-12 Total/NA Water 8260B280-151322-13 MW-12I Total/NA Water 8260B280-151322-13 - DL MW-12I Total/NA Water 8260B280-151322-14 MW-13 Total/NA Water 8260B280-151322-15 MW-13I Total/NA Water 8260B280-151322-16 MW-14 Total/NA Water 8260B280-151322-17 MW-14I Total/NA Water 8260B280-151322-17 - DL MW-14I Total/NA Water 8260B280-151322-18 MW-14I-A Total/NA Water 8260B280-151322-19 MW-15 Total/NA Water 8260B280-151322-20 MW-15I Total/NA Water 8260B280-151322-20 - DL MW-15I Total/NA Water 8260BMB 280-545004/9 Method Blank Total/NA Water 8260BLCS 280-545004/4 Lab Control Sample Total/NA Water 8260BLCSD 280-545004/5 Lab Control Sample Dup Total/NA Water 8260B280-151322-1 MS B-1 Total/NA Water 8260B280-151322-1 MSD B-1 Total/NA Analysis Batch: 545005 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B280-151322-21 MW-16 Total/NA Water 8260B280-151322-22 MW-2-C Total/NA Water 8260B280-151322-23 MW-5I-C Total/NA Water 8260BMB 280-545005/9 Method Blank Total/NA Water 8260BLCS 280-545005/4 Lab Control Sample Total/NA Water 8260BLCSD 280-545005/5 Lab Control Sample Dup Total/NA Water 8260B280-151314-E-7 MS Matrix Spike Total/NA Water 8260B280-151314-E-7 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 545070 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B SIM280-151322-1 B-1 Total/NA Water 8260B SIM280-151322-2 B-3 Total/NA Water 8260B SIM280-151322-4 MW-2A Total/NA Water 8260B SIM280-151322-5 MW-2I Total/NA Water 8260B SIM280-151322-6 MW-3 Total/NA Water 8260B SIM280-151322-14 MW-13 Total/NA Water 8260B SIM280-151322-15 MW-13I Total/NA Water 8260B SIM280-151322-16 MW-14 Total/NA Water 8260B SIM280-151322-17 MW-14I Total/NA Eurofins Denver Page 123 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA (Continued) Analysis Batch: 545070 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B SIM280-151322-18 MW-14I-A Total/NA Water 8260B SIMMB 280-545070/6 Method Blank Total/NA Water 8260B SIMLCS 280-545070/3 Lab Control Sample Total/NA Water 8260B SIMLCSD 280-545070/4 Lab Control Sample Dup Total/NA Analysis Batch: 545187 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B SIM280-151322-3 MW-2 Total/NA Water 8260B SIM280-151322-7 MW-4 Total/NA Water 8260B SIM280-151322-8 MW-4I Total/NA Water 8260B SIM280-151322-9 MW-5 Total/NA Water 8260B SIM280-151322-10 MW-5A Total/NA Water 8260B SIM280-151322-11 MW-5I Total/NA Water 8260B SIM280-151322-12 MW-12 Total/NA Water 8260B SIM280-151322-13 MW-12I Total/NA Water 8260B SIM280-151322-19 MW-15 Total/NA Water 8260B SIM280-151322-20 MW-15I Total/NA Water 8260B SIM280-151322-21 MW-16 Total/NA Water 8260B SIM280-151322-22 MW-2-C Total/NA Water 8260B SIM280-151322-23 MW-5I-C Total/NA Water 8260B SIMMB 280-545187/6 Method Blank Total/NA Water 8260B SIMLCS 280-545187/3 Lab Control Sample Total/NA Water 8260B SIMLCSD 280-545187/4 Lab Control Sample Dup Total/NA Analysis Batch: 545303 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B280-151378-14 MW-9 Total/NA Water 8260B280-151378-15 MW-9-a Total/NA Water 8260B280-151378-18 MW-10I Total/NA Water 8260BMB 280-545303/9 Method Blank Total/NA Water 8260BLCS 280-545303/4 Lab Control Sample Total/NA Water 8260BLCSD 280-545303/5 Lab Control Sample Dup Total/NA Analysis Batch: 545459 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B280-151378-2 MW-6 Total/NA Water 8260B280-151378-5 MW-11 Total/NA Water 8260B280-151378-6 MW-11I Total/NA Water 8260B280-151378-7 MW-17I Total/NA Water 8260B280-151378-8 MW-18I Total/NA Water 8260B280-151378-10 MW-20I Total/NA Water 8260B280-151378-11 MW-20I-a Total/NA Water 8260B280-151378-13 MW-8-c Total/NA Water 8260BMB 280-545459/9 Method Blank Total/NA Water 8260BLCS 280-545459/4 Lab Control Sample Total/NA Water 8260BLCSD 280-545459/5 Lab Control Sample Dup Total/NA Water 8260B280-151378-2 MS MW-6 Total/NA Water 8260B280-151378-2 MSD MW-6 Total/NA Eurofins Denver Page 124 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA Analysis Batch: 545711 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B SIM280-151378-18 MW-10I Total/NA Water 8260B SIMMB 280-545711/6 Method Blank Total/NA Water 8260B SIMLCS 280-545711/3 Lab Control Sample Total/NA Water 8260B SIMLCSD 280-545711/4 Lab Control Sample Dup Total/NA Water 8260B SIM280-151220-H-9 MSD Matrix Spike Duplicate Total/NA Water 8260B SIM280-151220-K-9 MS Matrix Spike Total/NA Analysis Batch: 545864 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B SIM280-151378-2 MW-6 Total/NA Water 8260B SIM280-151378-5 MW-11 Total/NA Water 8260B SIM280-151378-6 MW-11I Total/NA Water 8260B SIM280-151378-7 MW-17I Total/NA Water 8260B SIM280-151378-8 MW-18I Total/NA Water 8260B SIM280-151378-10 MW-20I Total/NA Water 8260B SIM280-151378-11 MW-20I-a Total/NA Water 8260B SIM280-151378-13 MW-8-c Total/NA Water 8260B SIM280-151378-14 MW-9 Total/NA Water 8260B SIM280-151378-15 MW-9-a Total/NA Water 8260B SIMMB 280-545864/6 Method Blank Total/NA Water 8260B SIMLCS 280-545864/3 Lab Control Sample Total/NA Water 8260B SIMLCSD 280-545864/4 Lab Control Sample Dup Total/NA Analysis Batch: 546098 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B SIM280-151378-16 MW-9I Total/NA Water 8260B SIMMB 280-546098/6 Method Blank Total/NA Water 8260B SIMLCS 280-546098/3 Lab Control Sample Total/NA Water 8260B SIMLCSD 280-546098/4 Lab Control Sample Dup Total/NA Analysis Batch: 546190 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B280-151378-1 MW-3I Total/NA Water 8260B280-151378-3 MW-6I Total/NA Water 8260B280-151378-16 MW-9I Total/NA Water 8260B280-151378-19 MW-7 Total/NA Water 8260B280-151378-20 MW-7I Total/NA Water 8260BMB 280-546190/9 Method Blank Total/NA Water 8260BLCS 280-546190/4 Lab Control Sample Total/NA Water 8260BLCSD 280-546190/5 Lab Control Sample Dup Total/NA Analysis Batch: 546258 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B SIM280-151378-1 MW-3I Total/NA Water 8260B SIM280-151378-3 MW-6I Total/NA Water 8260B SIM280-151378-19 MW-7 Total/NA Water 8260B SIM280-151378-20 MW-7I Total/NA Water 8260B SIMMB 280-546258/6 Method Blank Total/NA Water 8260B SIMLCS 280-546258/3 Lab Control Sample Total/NA Water 8260B SIMLCSD 280-546258/4 Lab Control Sample Dup Total/NA Eurofins Denver Page 125 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 280-151322-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA Analysis Batch: 546332 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B280-151378-16 - DL MW-9I Total/NA Water 8260B280-151378-19 - RA MW-7 Total/NA Water 8260BMB 280-546332/9 Method Blank Total/NA Water 8260BLCS 280-546332/4 Lab Control Sample Total/NA Water 8260BLCSD 280-546332/5 Lab Control Sample Dup Total/NA Analysis Batch: 547120 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B280-151937-1 MW-8 Total/NA Water 8260B280-151937-2 MW-8-c Total/NA Water 8260B280-151937-3 MW-10 Total/NA Water 8260B280-151937-4 MW-19I Total/NA Water 8260B280-151937-5 TRIP BLANK Total/NA Water 8260BMB 280-547120/9 Method Blank Total/NA Water 8260BLCS 280-547120/4 Lab Control Sample Total/NA Water 8260BLCSD 280-547120/5 Lab Control Sample Dup Total/NA Water 8260B280-151937-3 MS MW-10 Total/NA Water 8260B280-151937-3 MSD MW-10 Total/NA Analysis Batch: 547429 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260B SIM280-151937-1 MW-8 Total/NA Water 8260B SIM280-151937-2 MW-8-c Total/NA Water 8260B SIM280-151937-3 MW-10 Total/NA Water 8260B SIM280-151937-4 MW-19I Total/NA Water 8260B SIMMB 280-547429/4 Method Blank Total/NA Water 8260B SIMLCS 280-547429/1002 Lab Control Sample Total/NA Water 8260B SIMLCSD 280-547429/3 Lab Control Sample Dup Total/NA Eurofins Denver Page 126 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Client Sample ID: B-1 Lab Sample ID: 280-151322-1 Matrix: WaterDate Collected: 07/27/21 11:40 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 16:371 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545070 08/02/21 22:59 CAS EET DENTotal/NA 5 mL 5 mL Client Sample ID: B-3 Lab Sample ID: 280-151322-2 Matrix: WaterDate Collected: 07/27/21 10:15 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 09:231 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545070 08/03/21 00:08 CAS EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-2 Lab Sample ID: 280-151322-3 Matrix: WaterDate Collected: 07/28/21 09:25 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 09:461 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 16:45 AJP EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-2A Lab Sample ID: 280-151322-4 Matrix: WaterDate Collected: 07/27/21 14:30 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 10:091 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545070 08/03/21 00:31 CAS EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-2I Lab Sample ID: 280-151322-5 Matrix: WaterDate Collected: 07/27/21 13:30 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 10:311 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545070 08/03/21 00:54 CAS EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-3 Lab Sample ID: 280-151322-6 Matrix: WaterDate Collected: 07/27/21 14:55 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 10:541 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545070 08/03/21 01:17 CAS EET DENTotal/NA 5 mL 5 mL Eurofins Denver Page 127 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Client Sample ID: MW-4 Lab Sample ID: 280-151322-7 Matrix: WaterDate Collected: 07/28/21 14:00 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 11:171 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 17:08 AJP EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-4I Lab Sample ID: 280-151322-8 Matrix: WaterDate Collected: 07/28/21 15:00 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 11:401 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 17:32 AJP EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-5 Lab Sample ID: 280-151322-9 Matrix: WaterDate Collected: 07/28/21 14:15 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 12:031 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 17:55 AJP EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-5A Lab Sample ID: 280-151322-10 Matrix: WaterDate Collected: 07/28/21 14:20 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 12:251 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 18:18 AJP EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-5I Lab Sample ID: 280-151322-11 Matrix: WaterDate Collected: 07/28/21 13:40 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 12:481 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 18:41 AJP EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-12 Lab Sample ID: 280-151322-12 Matrix: WaterDate Collected: 07/28/21 11:15 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 13:111 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 19:04 AJP EET DENTotal/NA 5 mL 5 mL Eurofins Denver Page 128 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Client Sample ID: MW-12I Lab Sample ID: 280-151322-13 Matrix: WaterDate Collected: 07/28/21 10:35 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 13:341 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B DL 10 545004 08/02/21 18:09 TAW EET DENTotal/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 19:27 AJP EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-13 Lab Sample ID: 280-151322-14 Matrix: WaterDate Collected: 07/27/21 14:05 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 13:571 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545070 08/03/21 01:40 CAS EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-13I Lab Sample ID: 280-151322-15 Matrix: WaterDate Collected: 07/27/21 13:25 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 14:201 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545070 08/03/21 02:03 CAS EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-14 Lab Sample ID: 280-151322-16 Matrix: WaterDate Collected: 07/27/21 11:25 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 14:431 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545070 08/03/21 02:26 CAS EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-14I Lab Sample ID: 280-151322-17 Matrix: WaterDate Collected: 07/27/21 10:25 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 15:051 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B DL 10 545004 08/02/21 18:32 TAW EET DENTotal/NA 5 mL 5 mL Analysis 8260B SIM 1 545070 08/03/21 02:49 CAS EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-14I-A Lab Sample ID: 280-151322-18 Matrix: WaterDate Collected: 07/27/21 10:30 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 15:294 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545070 08/03/21 03:13 CAS EET DENTotal/NA 5 mL 5 mL Eurofins Denver Page 129 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Client Sample ID: MW-15 Lab Sample ID: 280-151322-19 Matrix: WaterDate Collected: 07/28/21 07:30 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 15:511 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 19:50 AJP EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-15I Lab Sample ID: 280-151322-20 Matrix: WaterDate Collected: 07/28/21 08:55 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 16:152 EET DEN545004 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B DL 10 545004 08/02/21 18:55 TAW EET DENTotal/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 20:13 AJP EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-16 Lab Sample ID: 280-151322-21 Matrix: WaterDate Collected: 07/28/21 11:25 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 15:251 EET DEN545005 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 20:36 AJP EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-2-C Lab Sample ID: 280-151322-22 Matrix: WaterDate Collected: 07/28/21 09:25 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 15:471 EET DEN545005 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 20:59 AJP EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-5I-C Lab Sample ID: 280-151322-23 Matrix: WaterDate Collected: 07/28/21 13:40 Date Received: 07/29/21 09:15 Analysis 8260B TAW08/02/21 11:381 EET DEN545005 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545187 08/03/21 21:23 AJP EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-3I Lab Sample ID: 280-151378-1 Matrix: WaterDate Collected: 07/29/21 08:20 Date Received: 07/31/21 09:35 Analysis 8260B RJS08/12/21 16:191 EET DEN546190 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 546258 08/12/21 19:25 GO EET DENTotal/NA 2 uL 2 uL Eurofins Denver Page 130 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Client Sample ID: MW-6 Lab Sample ID: 280-151378-2 Matrix: WaterDate Collected: 07/29/21 09:45 Date Received: 07/31/21 09:35 Analysis 8260B JLS08/05/21 13:421 EET DEN545459 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545864 08/09/21 17:04 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-6I Lab Sample ID: 280-151378-3 Matrix: WaterDate Collected: 07/29/21 09:08 Date Received: 07/31/21 09:35 Analysis 8260B RJS08/12/21 16:421 EET DEN546190 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 546258 08/12/21 19:48 GO EET DENTotal/NA 2 uL 2 uL Client Sample ID: MW-11 Lab Sample ID: 280-151378-5 Matrix: WaterDate Collected: 07/29/21 14:10 Date Received: 07/31/21 09:35 Analysis 8260B JLS08/05/21 14:031 EET DEN545459 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545864 08/09/21 17:27 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-11I Lab Sample ID: 280-151378-6 Matrix: WaterDate Collected: 07/29/21 13:30 Date Received: 07/31/21 09:35 Analysis 8260B JLS08/05/21 14:241 EET DEN545459 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545864 08/09/21 17:50 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-17I Lab Sample ID: 280-151378-7 Matrix: WaterDate Collected: 07/29/21 09:15 Date Received: 07/31/21 09:35 Analysis 8260B JLS08/05/21 14:461 EET DEN545459 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545864 08/09/21 18:13 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-18I Lab Sample ID: 280-151378-8 Matrix: WaterDate Collected: 07/29/21 10:25 Date Received: 07/31/21 09:35 Analysis 8260B JLS08/05/21 15:071 EET DEN545459 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545864 08/09/21 18:36 GO EET DENTotal/NA 5 mL 5 mL Eurofins Denver Page 131 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Client Sample ID: MW-20I Lab Sample ID: 280-151378-10 Matrix: WaterDate Collected: 07/29/21 11:25 Date Received: 07/31/21 09:35 Analysis 8260B JLS08/05/21 15:281 EET DEN545459 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545864 08/09/21 18:59 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-20I-a Lab Sample ID: 280-151378-11 Matrix: WaterDate Collected: 07/29/21 11:30 Date Received: 07/31/21 09:35 Analysis 8260B JLS08/05/21 15:491 EET DEN545459 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545864 08/09/21 19:22 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-8-c Lab Sample ID: 280-151378-13 Matrix: WaterDate Collected: 07/29/21 11:05 Date Received: 07/31/21 09:35 Analysis 8260B JLS08/05/21 16:101 EET DEN545459 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545864 08/09/21 19:45 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-9 Lab Sample ID: 280-151378-14 Matrix: WaterDate Collected: 07/30/21 09:05 Date Received: 07/31/21 09:35 Analysis 8260B JLS08/04/21 13:515 EET DEN545303 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545864 08/09/21 20:08 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-9-a Lab Sample ID: 280-151378-15 Matrix: WaterDate Collected: 07/30/21 09:05 Date Received: 07/31/21 09:35 Analysis 8260B JLS08/04/21 14:135 EET DEN545303 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545864 08/09/21 20:32 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-9I Lab Sample ID: 280-151378-16 Matrix: WaterDate Collected: 07/30/21 09:10 Date Received: 07/31/21 09:35 Analysis 8260B RJS08/12/21 17:051 EET DEN546190 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B DL 20 546332 08/13/21 16:04 TAW EET DENTotal/NA 5 mL 5 mL Analysis 8260B SIM 1 546098 08/11/21 18:19 CAS EET DENTotal/NA 5 mL 5 mL Eurofins Denver Page 132 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Client Sample ID: MW-10I Lab Sample ID: 280-151378-18 Matrix: WaterDate Collected: 07/30/21 09:50 Date Received: 07/31/21 09:35 Analysis 8260B JLS08/04/21 14:3410 EET DEN545303 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 545711 08/07/21 00:36 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-7 Lab Sample ID: 280-151378-19 Matrix: WaterDate Collected: 07/30/21 10:40 Date Received: 07/31/21 09:35 Analysis 8260B RJS08/12/21 17:281 EET DEN546190 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B RA 1 546332 08/13/21 15:40 TAW EET DENTotal/NA 5 mL 5 mL Analysis 8260B SIM 1 546258 08/12/21 20:11 GO EET DENTotal/NA 2 uL 2 uL Client Sample ID: MW-7I Lab Sample ID: 280-151378-20 Matrix: WaterDate Collected: 07/30/21 10:55 Date Received: 07/31/21 09:35 Analysis 8260B RJS08/12/21 17:511 EET DEN546190 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 546258 08/12/21 20:34 GO EET DENTotal/NA 2 uL 2 uL Client Sample ID: MW-8 Lab Sample ID: 280-151937-1 Matrix: WaterDate Collected: 08/12/21 11:20 Date Received: 08/17/21 09:30 Analysis 8260B TAW08/20/21 12:054 EET DEN547120 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 4 547429 08/23/21 17:29 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-8-c Lab Sample ID: 280-151937-2 Matrix: WaterDate Collected: 08/12/21 11:20 Date Received: 08/17/21 09:30 Analysis 8260B TAW08/20/21 12:261 EET DEN547120 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 547429 08/23/21 17:51 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: MW-10 Lab Sample ID: 280-151937-3 Matrix: WaterDate Collected: 08/12/21 10:05 Date Received: 08/17/21 09:30 Analysis 8260B TAW08/20/21 12:475 EET DEN547120 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 1 547429 08/23/21 18:13 GO EET DENTotal/NA 5 mL 5 mL Eurofins Denver Page 133 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Client Sample ID: MW-19I Lab Sample ID: 280-151937-4 Matrix: WaterDate Collected: 08/12/21 09:05 Date Received: 08/17/21 09:30 Analysis 8260B TAW08/20/21 13:512 EET DEN547120 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis 8260B SIM 2 547429 08/23/21 18:35 GO EET DENTotal/NA 5 mL 5 mL Client Sample ID: TRIP BLANK Lab Sample ID: 280-151937-5 Matrix: WaterDate Collected: 08/12/21 09:05 Date Received: 08/17/21 09:30 Analysis 8260B TAW08/20/21 11:441 EET DEN547120 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Laboratory References: EET DEN = Eurofins Denver, 4955 Yarrow Street, Arvada, CO 80002, TEL (303)736-0100 Eurofins Denver Page 134 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Accreditation/Certification Summary Client: ERM-West Job ID: 280-151322-1 Project/Site: EDO Western Corp. Laboratory: Eurofins Denver The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date Utah NELAP CO000262019-11 07-31-22 Eurofins Denver Page 135 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 136 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 137 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 138 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Login Sample Receipt Checklist Client: ERM-West Job Number: 280-151322-1 Login Number: 151322 Question Answer Comment Creator: Rystrom, Joshua R List Source: Eurofins Denver List Number: 1 TrueRadioactivity wasn't checked or is </= background as measured by a survey meter. TrueThe cooler's custody seal, if present, is intact. TrueSample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded. TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? FalseThere are no discrepancies between the containers received and the COC.Refer to Job Narrative for details. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. N/ASample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs FalseContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). Narrative to indicate if headspace container used for analysis. TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Denver Page 139 of 139 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ANALYTICAL REPORT Eurofins TestAmerica, Pittsburgh 301 Alpha Drive RIDC Park Pittsburgh, PA 15238 Tel: (412)963-7058 Laboratory Job ID: 180-129621-1 Client Project/Site: EDO Western Corp. Revision: 1 For: ERM-West 1050 SW 6th Avenue Suite 1650 Portland, Oregon 97204 Attn: Mr. Justin Dauphinais Authorized for release by: 9/6/2022 9:16:28 PM Ken Hayes, Project Manager II (615)301-5035 Ken.Hayes@Eurofinset.com This report has been electronically signed and authorized by the signatory. Electronic signature is intended to be the legally binding equivalent of a traditionally handwritten signature. Results relate only to the items tested and the sample(s) as received by the laboratory. PA Lab ID: 02-00416 1 2 3 4 5 6 7 8 9 10 11 12 13 Table of Contents Client: ERM-West Project/Site: EDO Western Corp. Laboratory Job ID: 180-129621-1 Page 2 of 137 Eurofins TestAmerica, Pittsburgh 9/6/2022 (Rev. 1) Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .99 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .135 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .137 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Job ID: 180-129621-1 Laboratory: Eurofins TestAmerica, Pittsburgh Narrative Job Narrative 180-129621-1 Comments No additional comments. Receipt The samples were received on 11/5/2021 10:00 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperatures of the 2 coolers at receipt time were 4.5º C and 4.6º C. Receipt Exceptions The containers received for the following samples did not match the information listed on the Chain-of-Custody (COC): MW-7 (180-129621-13[MS]) and MW-7 (180-129621-13[MSD]). The COC lists the analysis for the sendout voa and Pittsburgh voa: however only two containers were received . The Pm will review. The containers received for the following sample did not match the information listed on the Chain-of-Custody (COC): MW-15-c (180-129621-6). The COC lists the analysis for the sendout voa and Pittsburgh voa: however only thee containers were received . GC/MS VOA Method 8260D: Due to daylight saving time discrepancy, running time was wrongly recorded by the computer. MW-10I (180-129621-11) and MW-7I (180-129621-12) Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-379192 was outside the method criteria for the following analyte: 4-Methyl-2-pentanone(LOW). A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analyte is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in 180-379192 was outside the method criteria for the following analyte(s): Methylene Chloride.(HIGH). As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analyte(s) is considered estimated. Method 8260D: Internal standard (ISTD) response for the following sample was outside control limits: MW-9 (180-129621-7). The samples will be re-analyzed. Method 8260D: The matrix spike (MS) recoveries for the following sample associated with analytical batch 180-379192 were outside control limits for Trichlorofluoromethane: MW-7 (180-129621-13[MS]). The associated laboratory control sample (LCS) recovery met acceptance criteria. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-379192 was outside the method criteria for the following analyte: 1,4-Dioxane (RF). A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analyte is considered estimated Method 8260D: These samples were reanalyzed outside of hold time, initial analysis within hold time. MW-14I (180-129621-2), MW-15I (180-129621-4), MW-15-c (180-129621-6), MW-9 (180-129621-7), MW-9I (180-129621-8), MW-9I-a (180-129621-9), MW-10 (180-129621-10), MW-10I (180-129621-11) and MW-7I (180-129621-12) Methods 8260D: The continuing calibration verification (CCV) analyzed in batch 180-379918 was outside the method criteria for the following analytes: 2-Hexanone, Acetone, 1,2,4-Trichlorobenzene, 1,2,3-Trichlorobenzene, Bromoform and 1,2-Dibromo-3-Chloropropane (HIGH). As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The laboratory control sample duplicate (LCSD) for analytical batch 180-379918 recovered outside control limits for the following analytes: Acetone, 2-Hexanone. These analytes were biased high in the LCSD and were not detected in the associated samples; therefore, the data have been reported. Eurofins TestAmerica, Pittsburgh Page 3 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Job ID: 180-129621-1 (Continued) Laboratory: Eurofins TestAmerica, Pittsburgh (Continued) Method 8260D: The RPD of the laboratory control sample (LCS) and laboratory control sample duplicate (LCSD) for analytical batch 180-379918 recovered outside control limits for the following analytes: Acetone Method 8260D: Internal standard (ISTD) response for TBA-d9 for the following samples in analytical batch 180-379918 was outside acceptance criteria: MW-9 (180-129621-7) and (MB 180-379918/14). This ISTD does not correspond to any of the requested target compounds reported from this analytical batch; therefore, the data have been reported. Method 8260D: The continuing calibration verification (CCV) analyzed in 180-379918 was outside the method criteria for the following analyte: 1,4-Dioxane (LOW). A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analyte is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-379918 was outside the method criteria for the following analytes: 1,2-Dibromo-3-Chloropropane, Acetone,1,4-Dioxane and Methyl acetate (RF). A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The laboratory control sample (LCS) for analytical batch 180-379918 recovered outside control limits for the following analyte: 1,4-Dioxane. A low-level LCS (LLCS), spiked at the reporting limit (RL), was prepared with this batch. The affected target analytes recovered within acceptance limits; therefore, the LLCS demonstrates the analytical system had sufficient sensitivity to detect the compound had it been present. Since the affected target compounds were not detected in the samples, the data have been reported and qualified. Methods 8260C LL, 8260D: The following samples were diluted to bring the concentration of target analytes within the calibration range: MW-14I (180-129621-2), MW-9 (180-129621-7), MW-9I (180-129621-8), MW-9I-a (180-129621-9) and MW-10 (180-129621-10). Elevated reporting limits (RLs) are provided. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Narrative Job Narrative 180-129621-2 Comments No additional comments. Receipt The samples were received on 11/5/2021 10:00 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperatures of the 2 coolers at receipt time were 4.5º C and 4.6º C. Receipt Exceptions The containers received for the following samples did not match the information listed on the Chain-of-Custody (COC): MW-7 (180-129621-13[MS]) and MW-7 (180-129621-13[MSD]). The COC lists the analysis for the sendout voa and Pittsburgh voa: however only two containers were received . The Pm will review. The containers received for the following sample did not match the information listed on the Chain-of-Custody (COC): MW-15-c (180-129621-6). The COC lists the analysis for the sendout voa and Pittsburgh voa: however only thee containers were received . The Pm will review. GC/MS VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. VOA Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Eurofins TestAmerica, Pittsburgh Page 4 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Job ID: 180-129621-1 (Continued) Laboratory: Eurofins TestAmerica, Pittsburgh (Continued) Narrative Job Narrative 180-129623-1 Receipt The samples were received on 11/5/2021 10:00 AM. Unless otherwise noted below, the samples arrived in good condition, and, where required, properly preserved and on ice. The temperatures of the 2 coolers at receipt time were 4.5°C and 4.6°C Receipt Exceptions The containers received for the following sample did not match the information listed on the Chain-of-Custody (COC): MW-17I-c (180-129623-13). The COC lists six containers , while three were received. The PM will review. GC/MS VOA Method 8260D: The RPD of the laboratory control sample (LCS) and laboratory control sample duplicate (LCSD) for analytical batch 180-379033 recovered outside control limits for the following analytes: 2-Butanone. Method 8260D: The laboratory control sample duplicate (LCSD) for analytical batch 180-379033 recovered outside control limits for the following analytes: 1,2,4-Trichlorobenzene and 1,2,3-Trichlorobenzene. These analytes were biased high in the LCSD and were not detected in the associated samples; therefore, the data have been reported. Method 8260D: Internal standard (ISTD) response for the following samples were outside control limits: MW-2a (180-129623-10), MW-2I (180-129623-11), MW-17I (180-129623-12) and MW-17I-c (180-129623-13). The samples will be re-analyzed. Method 8260D: Surrogate recovery for the following samples were outside the upper control limit: MW-11I (180-129623-8) and MW-11 (180-129623-9). This sample did not contain any target analytes; therefore, re-extraction and/or re-analysis was not performed. Method 8260D: Surrogate recovery for the following samples were outside control limits: MW-2 (180-129623-7), MW-2a (180-129623-10), MW-2I (180-129623-11), MW-17I (180-129623-12) and MW-17I-c (180-129623-13). Evidence of matrix interferences is not obvious. The sample will be re-analyzed. Method 8260D: The matrix spike (MS) recoveries for the following sample associated with analytical batch 180-379027 was outside control limits for Trichlorofluoromethane : (180-129471-E-2 MS). The associated laboratory control sample (LCS) recovery met acceptance criteria. Method 8260D: The matrix spike (MS) recoveries for the following sample associated with analytical batch 180-379192 were outside control limits for Trichlorofluoromethane: (180-129621-A-13 MS). The associated laboratory control sample (LCS) recovery met acceptance criteria. Method 8260D: Reanalysis of the following samples were performed outside of the analytical holding time due to : samples confirm result Surrogates and ISTD failed. MW-2 (180-129623-7), MW-2a (180-129623-10), MW-2I (180-129623-11), MW-17I (180-129623-12) and MW-17I-c (180-129623-13). No additional analytical or quality issues were noted, other than those described above or in the Definitions/ Glossary page. Narrative Job Narrative 180-129623-2 Comments No additional comments. Receipt Eurofins TestAmerica, Pittsburgh Page 5 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Job ID: 180-129621-1 (Continued) Laboratory: Eurofins TestAmerica, Pittsburgh (Continued) The samples were received on 11/5/2021 10:00 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperatures of the 2 coolers at receipt time were 4.5º C and 4.6º C. Receipt Exceptions The containers received for the following sample did not match the information listed on the Chain-of-Custody (COC): MW-17I-c (180-129623-13). The COC lists six containers , while three were received. GC/MS VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. VOA Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Narrative Job Narrative 180-129668-1 Comments No additional comments. Receipt The samples were received on 11/6/2021 9:30 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 4.6º C. GC/MS VOA Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-379327 was outside the method criteria for the following analytes: 1,2,3-Trichlorobenzene, 1,4-Dioxane RF, and Trichlorofluoromethane. A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: Reanalysis of the following sample was performed outside of the analytical holding time due to sample was analyzed on the last day of holding time and required dilution. : MW-12I (180-129668-9). Method 8260D: The following sample was diluted to bring the concentration of target analytes within the calibration range: MW-12I (180-129668-9). Elevated reporting limits (RLs) are provided. Method 8260D: The continuing calibration verification (CCV) analyzed in batch 180-379481 was outside the method criteria for the following analytes: 1,2-Dibromo-3-Chloropropane, 1,4-Dioxane RF, and Trichlorofluoromethane. A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. Method 8260D: The continuing calibration verification (CCV) analyzed in 180-379481 was outside the method criteria for the following analytes: Carbon Disulfide and Dichlorodifluoro-methane. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analytes is considered estimated. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Narrative Job Narrative 180-129668-2 Comments No additional comments. Receipt Eurofins TestAmerica, Pittsburgh Page 6 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Case Narrative Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Job ID: 180-129621-1 (Continued) Laboratory: Eurofins TestAmerica, Pittsburgh (Continued) The samples were received on 11/6/2021 9:30 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 4.6º C. GC/MS VOA No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. VOA Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Eurofins TestAmerica, Pittsburgh Page 7 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Definitions/Glossary Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Qualifiers GC/MS VOA Qualifier Description *-LCS and/or LCSD is outside acceptance limits, low biased. Qualifier *+LCS and/or LCSD is outside acceptance limits, high biased. *1 LCS/LCSD RPD exceeds control limits. *3 ISTD response or retention time outside acceptable limits. E Result exceeded calibration range. F1 MS and/or MSD recovery exceeds control limits. F2 MS/MSD RPD exceeds control limits H Sample was prepped or analyzed beyond the specified holding time J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. S1+Surrogate recovery exceeds control limits, high biased. Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins TestAmerica, Pittsburgh Page 8 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Accreditation/Certification Summary Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Laboratory: Eurofins TestAmerica, Pittsburgh Unless otherwise noted, all analytes for this laboratory were covered under each accreditation/certification below. Authority Program Identification Number Expiration Date Utah NELAP PA001462019-8 05-31-22 The following analytes are included in this report, but the laboratory is not certified by the governing authority. This list may include analytes for which the agency does not offer certification. Analysis Method Prep Method Matrix Analyte EPA 8260D Water Chlorodibromomethane Laboratory: Eurofins TestAmerica, Pensacola The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date Florida NELAP E81010 06-30-22 Eurofins TestAmerica, Pittsburgh Page 9 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Sample Summary Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Lab Sample ID Client Sample ID Matrix Collected Received 180-129621-1 MW-20I Water 11/03/21 11:45 11/05/21 10:00 180-129621-2 MW-14I Water 11/03/21 12:50 11/05/21 10:00 180-129621-3 MW-14 Water 11/03/21 13:30 11/05/21 10:00 180-129621-4 MW-15I Water 11/03/21 14:50 11/05/21 10:00 180-129621-5 MW-15 Water 11/03/21 15:45 11/05/21 10:00 180-129621-6 MW-15-c Water 11/03/21 16:15 11/05/21 10:00 180-129621-7 MW-9 Water 11/03/21 11:35 11/05/21 10:00 180-129621-8 MW-9I Water 11/03/21 12:35 11/05/21 10:00 180-129621-9 MW-9I-a Water 11/03/21 12:35 11/05/21 10:00 180-129621-10 MW-10 Water 11/03/21 14:05 11/05/21 10:00 180-129621-11 MW-10I Water 11/03/21 14:50 11/05/21 10:00 180-129621-12 MW-7I Water 11/03/21 16:05 11/05/21 10:00 180-129621-13 MW-7 Water 11/03/21 17:00 11/05/21 10:00 180-129623-1 B-1 Water 11/02/21 13:15 11/05/21 10:00 180-129623-2 B-3 Water 11/02/21 12:10 11/05/21 10:00 180-129623-3 MW-5 Water 11/02/21 14:00 11/05/21 10:00 180-129623-4 MW-5I Water 11/02/21 14:40 11/05/21 10:00 180-129623-5 MW-3 Water 11/02/21 12:45 11/05/21 10:00 180-129623-6 MW-3I Water 11/02/21 12:05 11/05/21 10:00 180-129623-7 MW-2 Water 11/02/21 13:50 11/05/21 10:00 180-129623-8 MW-11I Water 11/02/21 14:35 11/05/21 10:00 180-129623-9 MW-11 Water 11/02/21 15:15 11/05/21 10:00 180-129623-10 MW-2a Water 11/02/21 16:40 11/05/21 10:00 180-129623-11 MW-2I Water 11/02/21 15:55 11/05/21 10:00 180-129623-12 MW-17I Water 11/02/21 16:00 11/05/21 10:00 180-129623-13 MW-17I-c Water 11/02/21 16:30 11/05/21 10:00 180-129668-1 MW-6I Water 11/04/21 12:05 11/06/21 09:30 180-129668-2 MW-6 Water 11/04/21 12:40 11/06/21 09:30 180-129668-3 MW-4 Water 11/04/21 13:35 11/06/21 09:30 180-129668-4 MW-4I Water 11/04/21 14:15 11/06/21 09:30 180-129668-5 MW-16 Water 11/04/21 11:00 11/06/21 09:30 180-129668-6 MW-19I Water 11/04/21 10:30 11/06/21 09:30 180-129668-7 MW-18I Water 11/04/21 11:25 11/06/21 09:30 180-129668-8 MW-12 Water 11/04/21 12:30 11/06/21 09:30 180-129668-9 MW-12I Water 11/04/21 13:05 11/06/21 09:30 180-129668-10 MW-13I Water 11/04/21 14:00 11/06/21 09:30 180-129668-11 MW-13I-c Water 11/04/21 15:00 11/06/21 09:30 180-129668-12 MW-13 Water 11/04/21 14:30 11/06/21 09:30 180-129668-13 MW-8 Water 11/04/21 15:00 11/06/21 09:30 180-129668-14 MW-8-A Water 11/04/21 15:00 11/06/21 09:30 Eurofins TestAmerica, Pittsburgh Page 10 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Method Summary Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method Method Description LaboratoryProtocol SW846EPA 8260D Volatile Organic Compounds by GC/MS TAL PIT SW8465030CPurge and Trap TAL PIT Protocol References: SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL (412)963-7058 Eurofins TestAmerica, Pittsburgh Page 11 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Client Sample ID: MW-20I Lab Sample ID: 180-129621-1 Matrix: WaterDate Collected: 11/03/21 11:45 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 14:301 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379192 11/17/21 19:51 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-14I Lab Sample ID: 180-129621-2 Matrix: WaterDate Collected: 11/03/21 12:50 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 14:551 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D RADL 20 379918 11/23/21 15:22 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D 1 379192 11/17/21 20:16 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-14 Lab Sample ID: 180-129621-3 Matrix: WaterDate Collected: 11/03/21 13:30 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 15:201 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379192 11/17/21 20:42 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-15I Lab Sample ID: 180-129621-4 Matrix: WaterDate Collected: 11/03/21 14:50 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 15:451 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D RA 1 379918 11/23/21 15:48 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D 1 379192 11/17/21 21:07 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-15 Lab Sample ID: 180-129621-5 Matrix: WaterDate Collected: 11/03/21 15:45 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 16:101 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Eurofins TestAmerica, Pittsburgh Page 12 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Client Sample ID: MW-15 Lab Sample ID: 180-129621-5 Matrix: WaterDate Collected: 11/03/21 15:45 Date Received: 11/05/21 10:00 Analysis EPA 8260D J1T11/17/21 21:321 TAL PIT379192 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Client Sample ID: MW-15-c Lab Sample ID: 180-129621-6 Matrix: WaterDate Collected: 11/03/21 16:15 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 16:351 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D RA 1 379918 11/23/21 16:14 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D 1 379192 11/17/21 21:57 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-9 Lab Sample ID: 180-129621-7 Matrix: WaterDate Collected: 11/03/21 11:35 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 17:001 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D RADL 20 379918 11/23/21 16:40 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D 1 379192 11/17/21 22:22 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-9I Lab Sample ID: 180-129621-8 Matrix: WaterDate Collected: 11/03/21 12:35 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 17:251 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D RADL 200 379918 11/23/21 17:07 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D 1 379192 11/17/21 22:48 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-9I-a Lab Sample ID: 180-129621-9 Matrix: WaterDate Collected: 11/03/21 12:35 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 17:501 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Eurofins TestAmerica, Pittsburgh Page 13 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Client Sample ID: MW-9I-a Lab Sample ID: 180-129621-9 Matrix: WaterDate Collected: 11/03/21 12:35 Date Received: 11/05/21 10:00 Analysis EPA 8260D APD11/23/21 17:33200RADL TAL PIT379918 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Analysis EPA 8260D 1 379192 11/17/21 23:12 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-10 Lab Sample ID: 180-129621-10 Matrix: WaterDate Collected: 11/03/21 14:05 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 18:151 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D RADL 50 379918 11/23/21 17:59 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D 1 379192 11/17/21 23:36 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-10I Lab Sample ID: 180-129621-11 Matrix: WaterDate Collected: 11/03/21 14:50 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 18:401 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D RADL 100 379918 11/23/21 18:25 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D 1 379192 11/17/21 00:01 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-7I Lab Sample ID: 180-129621-12 Matrix: WaterDate Collected: 11/03/21 16:05 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 19:051 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D RA 1 379918 11/23/21 18:51 APD TAL PITTotal/NA 5 mL 5 mL CHHP11Instrument ID: Analysis EPA 8260D 1 379192 11/17/21 00:27 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Eurofins TestAmerica, Pittsburgh Page 14 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Client Sample ID: MW-7 Lab Sample ID: 180-129621-13 Matrix: WaterDate Collected: 11/03/21 17:00 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/11/21 12:501 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379192 11/17/21 16:55 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: B-1 Lab Sample ID: 180-129623-1 Matrix: WaterDate Collected: 11/02/21 13:15 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 16:091 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379033 11/16/21 18:49 SW1 TAL PITTotal/NA 5 mL 5 mL CHHP4Instrument ID: Client Sample ID: B-3 Lab Sample ID: 180-129623-2 Matrix: WaterDate Collected: 11/02/21 12:10 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 19:051 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379033 11/16/21 19:14 SW1 TAL PITTotal/NA 5 mL 5 mL CHHP4Instrument ID: Client Sample ID: MW-5 Lab Sample ID: 180-129623-3 Matrix: WaterDate Collected: 11/02/21 14:00 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 19:301 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379033 11/16/21 19:39 SW1 TAL PITTotal/NA 5 mL 5 mL CHHP4Instrument ID: Client Sample ID: MW-5I Lab Sample ID: 180-129623-4 Matrix: WaterDate Collected: 11/02/21 14:40 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 19:551 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379033 11/16/21 20:04 SW1 TAL PITTotal/NA 5 mL 5 mL CHHP4Instrument ID: Eurofins TestAmerica, Pittsburgh Page 15 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Client Sample ID: MW-3 Lab Sample ID: 180-129623-5 Matrix: WaterDate Collected: 11/02/21 12:45 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 20:201 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379033 11/16/21 20:30 SW1 TAL PITTotal/NA 5 mL 5 mL CHHP4Instrument ID: Client Sample ID: MW-3I Lab Sample ID: 180-129623-6 Matrix: WaterDate Collected: 11/02/21 12:05 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 20:451 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379033 11/16/21 20:55 SW1 TAL PITTotal/NA 5 mL 5 mL CHHP4Instrument ID: Client Sample ID: MW-2 Lab Sample ID: 180-129623-7 Matrix: WaterDate Collected: 11/02/21 13:50 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 21:101 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379027 11/16/21 18:33 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Analysis EPA 8260D RA 1 379192 11/17/21 13:53 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-11I Lab Sample ID: 180-129623-8 Matrix: WaterDate Collected: 11/02/21 14:35 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 21:351 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379027 11/16/21 18:58 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-11 Lab Sample ID: 180-129623-9 Matrix: WaterDate Collected: 11/02/21 15:15 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 22:001 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379027 11/16/21 19:22 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Eurofins TestAmerica, Pittsburgh Page 16 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Client Sample ID: MW-2a Lab Sample ID: 180-129623-10 Matrix: WaterDate Collected: 11/02/21 16:40 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 22:251 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379027 11/16/21 19:47 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Analysis EPA 8260D RA 1 379192 11/17/21 14:19 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-2I Lab Sample ID: 180-129623-11 Matrix: WaterDate Collected: 11/02/21 15:55 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 22:501 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379027 11/16/21 20:12 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Analysis EPA 8260D RA 1 379192 11/17/21 14:45 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-17I Lab Sample ID: 180-129623-12 Matrix: WaterDate Collected: 11/02/21 16:00 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 23:151 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379027 11/16/21 20:38 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Analysis EPA 8260D RA 1 379192 11/17/21 15:11 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Client Sample ID: MW-17I-c Lab Sample ID: 180-129623-13 Matrix: WaterDate Collected: 11/02/21 16:30 Date Received: 11/05/21 10:00 Analysis 8260D SIM CAR11/10/21 23:401 TAL PEN555304 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379027 11/16/21 21:03 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Analysis EPA 8260D RA 1 379192 11/17/21 15:36 J1T TAL PITTotal/NA 5 mL 5 mL CHHP5Instrument ID: Eurofins TestAmerica, Pittsburgh Page 17 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Client Sample ID: MW-6I Lab Sample ID: 180-129668-1 Matrix: WaterDate Collected: 11/04/21 12:05 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/11/21 19:301 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 11:22 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Client Sample ID: MW-6 Lab Sample ID: 180-129668-2 Matrix: WaterDate Collected: 11/04/21 12:40 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/11/21 19:551 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 11:45 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Client Sample ID: MW-4 Lab Sample ID: 180-129668-3 Matrix: WaterDate Collected: 11/04/21 13:35 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/11/21 20:201 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 12:08 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Client Sample ID: MW-4I Lab Sample ID: 180-129668-4 Matrix: WaterDate Collected: 11/04/21 14:15 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/11/21 20:451 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 12:31 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Client Sample ID: MW-16 Lab Sample ID: 180-129668-5 Matrix: WaterDate Collected: 11/04/21 11:00 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/11/21 21:101 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 12:54 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Eurofins TestAmerica, Pittsburgh Page 18 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Client Sample ID: MW-19I Lab Sample ID: 180-129668-6 Matrix: WaterDate Collected: 11/04/21 10:30 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/11/21 21:351 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 13:18 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Client Sample ID: MW-18I Lab Sample ID: 180-129668-7 Matrix: WaterDate Collected: 11/04/21 11:25 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/11/21 22:001 TAL PEN555446 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 13:41 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Client Sample ID: MW-12 Lab Sample ID: 180-129668-8 Matrix: WaterDate Collected: 11/04/21 12:30 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/16/21 20:351 TAL PEN556104 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 14:04 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Client Sample ID: MW-12I Lab Sample ID: 180-129668-9 Matrix: WaterDate Collected: 11/04/21 13:05 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/16/21 21:001 TAL PEN556104 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 14:27 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Analysis EPA 8260D DL 10 379481 11/19/21 09:04 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Client Sample ID: MW-13I Lab Sample ID: 180-129668-10 Matrix: WaterDate Collected: 11/04/21 14:00 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/16/21 21:251 TAL PEN556104 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 14:50 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Eurofins TestAmerica, Pittsburgh Page 19 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Client Sample ID: MW-13I-c Lab Sample ID: 180-129668-11 Matrix: WaterDate Collected: 11/04/21 15:00 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/16/21 21:501 TAL PEN556104 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 15:14 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Client Sample ID: MW-13 Lab Sample ID: 180-129668-12 Matrix: WaterDate Collected: 11/04/21 14:30 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/16/21 17:401 TAL PEN556104 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 08:38 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Client Sample ID: MW-8 Lab Sample ID: 180-129668-13 Matrix: WaterDate Collected: 11/04/21 15:00 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/16/21 22:151 TAL PEN556104 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 15:37 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Client Sample ID: MW-8-A Lab Sample ID: 180-129668-14 Matrix: WaterDate Collected: 11/04/21 15:00 Date Received: 11/06/21 09:30 Analysis 8260D SIM CAR11/16/21 22:401 TAL PEN556104 Type Batch Method Batch Prep Type LabAnalystRun Prepared or Analyzed Initial Amount Amount Final Batch NumberFactor Dil Total/NA 5 mL 5 mL Instrument ID: Curie Analysis EPA 8260D 1 379327 11/18/21 09:02 KLG TAL PITTotal/NA 5 mL 5 mL CHHP3Instrument ID: Laboratory References: TAL PIT = Eurofins TestAmerica, Pittsburgh, 301 Alpha Drive, RIDC Park, Pittsburgh, PA 15238, TEL (412)963-7058 Eurofins TestAmerica, Pittsburgh Page 20 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Lab Chronicle Client: ERM-West Job ID: 180-129621-1 Project/Site: EDO Western Corp. Analyst References: Lab: TAL PEN Batch Type: Analysis CAR = Cassie Rodriguez Lab: TAL PIT Batch Type: Analysis APD = Aaron DeLeo J1T = Jianwu Tang KLG = Kathy Gordon SW1 = Sunan Wang-un Eurofins TestAmerica, Pittsburgh Page 21 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-1Client Sample ID: MW-20I Matrix: WaterDate Collected: 11/03/21 11:45 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 0.402 J 1.00 0.300 ug/L 11/11/21 14:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 96 50 -150 11/11/21 14:30 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 11/11/21 14:30 150-150 4-Bromofluorobenzene 103 11/11/21 14:30 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 19:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 19:51 1BenzeneND 5.00 ug/L 11/17/21 19:51 1ChlorobromomethaneND 5.00 ug/L 11/17/21 19:51 1DichlorobromomethaneND 5.00 ug/L 11/17/21 19:51 1BromoformND 5.00 ug/L 11/17/21 19:51 1BromomethaneND 5.00 ug/L 11/17/21 19:51 12-Butanone (MEK)ND 5.00 ug/L 11/17/21 19:51 1Carbon disulfide ND 5.00 ug/L 11/17/21 19:51 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 19:51 1ChlorobenzeneND 5.00 ug/L 11/17/21 19:51 1ChlorodibromomethaneND 5.00 ug/L 11/17/21 19:51 1ChloroethaneND 5.00 ug/L 11/17/21 19:51 1ChloroformND 5.00 ug/L 11/17/21 19:51 1ChloromethaneND 5.00 ug/L 11/17/21 19:51 1CyclohexaneND 5.00 ug/L 11/17/21 19:51 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 19:51 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 19:51 11,3-Dichlorobenzene ND 5.00 ug/L 11/17/21 19:51 11,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 19:51 1DichlorodifluoromethaneND 5.00 ug/L 11/17/21 19:51 11,1-Dichloroethane ND 5.00 ug/L 11/17/21 19:51 11,2-Dichloroethane ND 5.00 ug/L 11/17/21 19:51 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 19:51 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 19:51 11,1-Dichloroethene ND 5.00 ug/L 11/17/21 19:51 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 19:51 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 19:51 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 19:51 11,4-Dioxane ND 5.00 ug/L 11/17/21 19:51 1EthylbenzeneND 5.00 ug/L 11/17/21 19:51 12-Hexanone ND 5.00 ug/L 11/17/21 19:51 1IsopropylbenzeneND 25.0 ug/L 11/17/21 19:51 1Methyl acetate ND 5.00 ug/L 11/17/21 19:51 1MethylcyclohexaneND 5.00 ug/L 11/17/21 19:51 1Methylene Chloride ND 5.00 ug/L 11/17/21 19:51 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 19:51 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 19:51 1StyreneND 5.00 ug/L 11/17/21 19:51 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 19:51 1TetrachloroetheneND 5.00 ug/L 11/17/21 19:51 1TolueneND Eurofins TestAmerica, Pittsburgh Page 22 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-1Client Sample ID: MW-20I Matrix: WaterDate Collected: 11/03/21 11:45 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 19:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 19:51 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 19:51 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 19:51 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 19:51 1TrichloroetheneND 5.00 ug/L 11/17/21 19:51 1TrichlorofluoromethaneND 5.00 ug/L 11/17/21 19:51 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 19:51 1Vinyl chloride ND 5.00 ug/L 11/17/21 19:51 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 19:51 1o-Xylene ND 5.00 ug/L 11/17/21 19:51 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)120 52 -151 11/17/21 19:51 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)99 11/17/21 19:51 153-124 4-Bromofluorobenzene (Surr)79 11/17/21 19:51 149-118 Dibromofluoromethane (Surr)126 11/17/21 19:51 160-132 Lab Sample ID: 180-129621-2Client Sample ID: MW-14I Matrix: WaterDate Collected: 11/03/21 12:50 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 16.3 1.00 0.300 ug/L 11/11/21 14:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 93 50 -150 11/11/21 14:55 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/11/21 14:55 150-150 4-Bromofluorobenzene 103 11/11/21 14:55 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 20:16 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 20:16 1BenzeneND 5.00 ug/L 11/17/21 20:16 1ChlorobromomethaneND 5.00 ug/L 11/17/21 20:16 1DichlorobromomethaneND 5.00 ug/L 11/17/21 20:16 1BromoformND 5.00 ug/L 11/17/21 20:16 1BromomethaneND 5.00 ug/L 11/17/21 20:16 12-Butanone (MEK)ND 5.00 ug/L 11/17/21 20:16 1Carbon disulfide ND 5.00 ug/L 11/17/21 20:16 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 20:16 1ChlorobenzeneND 5.00 ug/L 11/17/21 20:16 1ChlorodibromomethaneND 5.00 ug/L 11/17/21 20:16 1ChloroethaneND 5.00 ug/L 11/17/21 20:16 1ChloroformND 5.00 ug/L 11/17/21 20:16 1ChloromethaneND 5.00 ug/L 11/17/21 20:16 1CyclohexaneND 5.00 ug/L 11/17/21 20:16 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 20:16 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 20:16 11,3-Dichlorobenzene ND Eurofins TestAmerica, Pittsburgh Page 23 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-2Client Sample ID: MW-14I Matrix: WaterDate Collected: 11/03/21 12:50 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 20:16 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 20:16 1DichlorodifluoromethaneND 5.00 ug/L 11/17/21 20:16 11,1-Dichloroethane 36.2 5.00 ug/L 11/17/21 20:16 11,2-Dichloroethane 7.48 5.00 ug/L 11/17/21 20:16 1cis-1,2-Dichloroethene 408 E 5.00 ug/L 11/17/21 20:16 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 20:16 11,1-Dichloroethene 18.5 5.00 ug/L 11/17/21 20:16 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 20:16 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 20:16 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 20:16 11,4-Dioxane ND 5.00 ug/L 11/17/21 20:16 1EthylbenzeneND 5.00 ug/L 11/17/21 20:16 12-Hexanone ND 5.00 ug/L 11/17/21 20:16 1IsopropylbenzeneND 25.0 ug/L 11/17/21 20:16 1Methyl acetate ND 5.00 ug/L 11/17/21 20:16 1MethylcyclohexaneND 5.00 ug/L 11/17/21 20:16 1Methylene Chloride ND 5.00 ug/L 11/17/21 20:16 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 20:16 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 20:16 1StyreneND 5.00 ug/L 11/17/21 20:16 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 20:16 1Tetrachloroethene41.3 5.00 ug/L 11/17/21 20:16 1TolueneND 5.00 ug/L 11/17/21 20:16 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 20:16 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 20:16 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 20:16 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 20:16 1Trichloroethene188 E 5.00 ug/L 11/17/21 20:16 1TrichlorofluoromethaneND 5.00 ug/L 11/17/21 20:16 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 20:16 1Vinyl chloride 13.4 5.00 ug/L 11/17/21 20:16 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 20:16 1o-Xylene ND 5.00 ug/L 11/17/21 20:16 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)113 52 -151 11/17/21 20:16 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)95 11/17/21 20:16 153-124 4-Bromofluorobenzene (Surr)77 11/17/21 20:16 149-118 Dibromofluoromethane (Surr)118 11/17/21 20:16 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL RL MDL Acetone ND H *+ *1 400 ug/L 11/23/21 15:22 20 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 100 ug/L 11/23/21 15:22 20BenzeneND H 100 ug/L 11/23/21 15:22 20ChlorobromomethaneND H 100 ug/L 11/23/21 15:22 20DichlorobromomethaneND H 100 ug/L 11/23/21 15:22 20BromoformND H 100 ug/L 11/23/21 15:22 20BromomethaneND H 100 ug/L 11/23/21 15:22 202-Butanone (MEK)ND H Eurofins TestAmerica, Pittsburgh Page 24 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-2Client Sample ID: MW-14I Matrix: WaterDate Collected: 11/03/21 12:50 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL (Continued) RL MDL Carbon disulfide ND H 100 ug/L 11/23/21 15:22 20 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 100 ug/L 11/23/21 15:22 20Carbon tetrachloride ND H 100 ug/L 11/23/21 15:22 20ChlorobenzeneND H 100 ug/L 11/23/21 15:22 20ChlorodibromomethaneND H 100 ug/L 11/23/21 15:22 20ChloroethaneND H 100 ug/L 11/23/21 15:22 20ChloroformND H 100 ug/L 11/23/21 15:22 20ChloromethaneND H 100 ug/L 11/23/21 15:22 20CyclohexaneND H 100 ug/L 11/23/21 15:22 201,2-Dibromo-3-Chloropropane ND H 100 ug/L 11/23/21 15:22 201,2-Dichlorobenzene ND H 100 ug/L 11/23/21 15:22 201,3-Dichlorobenzene ND H 100 ug/L 11/23/21 15:22 201,4-Dichlorobenzene ND H 100 ug/L 11/23/21 15:22 20DichlorodifluoromethaneND H 100 ug/L 11/23/21 15:22 201,1-Dichloroethane ND H 100 ug/L 11/23/21 15:22 201,2-Dichloroethane ND H 100 ug/L 11/23/21 15:22 20cis-1,2-Dichloroethene 340 H 100 ug/L 11/23/21 15:22 20trans-1,2-Dichloroethene ND H 100 ug/L 11/23/21 15:22 201,1-Dichloroethene ND H 100 ug/L 11/23/21 15:22 201,2-Dichloropropane ND H 100 ug/L 11/23/21 15:22 20cis-1,3-Dichloropropene ND H 100 ug/L 11/23/21 15:22 20trans-1,3-Dichloropropene ND H 20000 ug/L 11/23/21 15:22 201,4-Dioxane ND H *- 100 ug/L 11/23/21 15:22 20EthylbenzeneND H 100 ug/L 11/23/21 15:22 202-Hexanone ND H *+ 100 ug/L 11/23/21 15:22 20IsopropylbenzeneND H 500 ug/L 11/23/21 15:22 20Methyl acetate ND H 100 ug/L 11/23/21 15:22 20MethylcyclohexaneND H 100 ug/L 11/23/21 15:22 20Methylene Chloride ND H 100 ug/L 11/23/21 15:22 204-Methyl-2-pentanone (MIBK)ND H 100 ug/L 11/23/21 15:22 20Methyl tert-butyl ether ND H 100 ug/L 11/23/21 15:22 20StyreneND H 100 ug/L 11/23/21 15:22 201,1,2,2-Tetrachloroethane ND H 100 ug/L 11/23/21 15:22 20TetrachloroetheneND H 100 ug/L 11/23/21 15:22 20TolueneND H 100 ug/L 11/23/21 15:22 201,2,3-Trichlorobenzene ND H 100 ug/L 11/23/21 15:22 201,2,4-Trichlorobenzene ND H 100 ug/L 11/23/21 15:22 201,1,1-Trichloroethane ND H 100 ug/L 11/23/21 15:22 201,1,2-Trichloroethane ND H 100 ug/L 11/23/21 15:22 20Trichloroethene128 H 100 ug/L 11/23/21 15:22 20TrichlorofluoromethaneND H 100 ug/L 11/23/21 15:22 201,1,2-Trichlorotrifluoroethane ND H 100 ug/L 11/23/21 15:22 20Vinyl chloride ND H 100 ug/L 11/23/21 15:22 20m-Xylene & p-Xylene ND H 100 ug/L 11/23/21 15:22 20o-Xylene ND H 100 ug/L 11/23/21 15:22 201,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)125 52 -151 11/23/21 15:22 20 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)110 11/23/21 15:22 2053-124 4-Bromofluorobenzene (Surr)102 11/23/21 15:22 2049-118 Eurofins TestAmerica, Pittsburgh Page 25 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-2Client Sample ID: MW-14I Matrix: WaterDate Collected: 11/03/21 12:50 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL (Continued) Dibromofluoromethane (Surr)110 60 -132 11/23/21 15:22 20 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 180-129621-3Client Sample ID: MW-14 Matrix: WaterDate Collected: 11/03/21 13:30 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 0.531 J 1.00 0.300 ug/L 11/11/21 15:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 97 50 -150 11/11/21 15:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 11/11/21 15:20 150-150 4-Bromofluorobenzene 102 11/11/21 15:20 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 20:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 20:42 1BenzeneND 5.00 ug/L 11/17/21 20:42 1ChlorobromomethaneND 5.00 ug/L 11/17/21 20:42 1DichlorobromomethaneND 5.00 ug/L 11/17/21 20:42 1BromoformND 5.00 ug/L 11/17/21 20:42 1BromomethaneND 5.00 ug/L 11/17/21 20:42 12-Butanone (MEK)ND 5.00 ug/L 11/17/21 20:42 1Carbon disulfide ND 5.00 ug/L 11/17/21 20:42 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 20:42 1ChlorobenzeneND 5.00 ug/L 11/17/21 20:42 1ChlorodibromomethaneND 5.00 ug/L 11/17/21 20:42 1ChloroethaneND 5.00 ug/L 11/17/21 20:42 1ChloroformND 5.00 ug/L 11/17/21 20:42 1ChloromethaneND 5.00 ug/L 11/17/21 20:42 1CyclohexaneND 5.00 ug/L 11/17/21 20:42 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 20:42 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 20:42 11,3-Dichlorobenzene ND 5.00 ug/L 11/17/21 20:42 11,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 20:42 1DichlorodifluoromethaneND 5.00 ug/L 11/17/21 20:42 11,1-Dichloroethane ND 5.00 ug/L 11/17/21 20:42 11,2-Dichloroethane ND 5.00 ug/L 11/17/21 20:42 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 20:42 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 20:42 11,1-Dichloroethene ND 5.00 ug/L 11/17/21 20:42 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 20:42 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 20:42 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 20:42 11,4-Dioxane ND 5.00 ug/L 11/17/21 20:42 1EthylbenzeneND 5.00 ug/L 11/17/21 20:42 12-Hexanone ND 5.00 ug/L 11/17/21 20:42 1IsopropylbenzeneND 25.0 ug/L 11/17/21 20:42 1Methyl acetate ND Eurofins TestAmerica, Pittsburgh Page 26 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-3Client Sample ID: MW-14 Matrix: WaterDate Collected: 11/03/21 13:30 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Methylcyclohexane ND 5.00 ug/L 11/17/21 20:42 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 20:42 1Methylene Chloride ND 5.00 ug/L 11/17/21 20:42 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 20:42 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 20:42 1StyreneND 5.00 ug/L 11/17/21 20:42 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 20:42 1TetrachloroetheneND 5.00 ug/L 11/17/21 20:42 1TolueneND 5.00 ug/L 11/17/21 20:42 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 20:42 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 20:42 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 20:42 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 20:42 1TrichloroetheneND 5.00 ug/L 11/17/21 20:42 1TrichlorofluoromethaneND 5.00 ug/L 11/17/21 20:42 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 20:42 1Vinyl chloride ND 5.00 ug/L 11/17/21 20:42 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 20:42 1o-Xylene ND 5.00 ug/L 11/17/21 20:42 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)116 52 -151 11/17/21 20:42 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)87 11/17/21 20:42 153-124 4-Bromofluorobenzene (Surr)73 11/17/21 20:42 149-118 Dibromofluoromethane (Surr)125 11/17/21 20:42 160-132 Lab Sample ID: 180-129621-4Client Sample ID: MW-15I Matrix: WaterDate Collected: 11/03/21 14:50 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/11/21 15:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 96 50 -150 11/11/21 15:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 11/11/21 15:45 150-150 4-Bromofluorobenzene 103 11/11/21 15:45 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 21:07 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 21:07 1BenzeneND 5.00 ug/L 11/17/21 21:07 1ChlorobromomethaneND 5.00 ug/L 11/17/21 21:07 1DichlorobromomethaneND 5.00 ug/L 11/17/21 21:07 1BromoformND 5.00 ug/L 11/17/21 21:07 1BromomethaneND 5.00 ug/L 11/17/21 21:07 12-Butanone (MEK)ND 5.00 ug/L 11/17/21 21:07 1Carbon disulfide ND 5.00 ug/L 11/17/21 21:07 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 21:07 1ChlorobenzeneND Eurofins TestAmerica, Pittsburgh Page 27 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-4Client Sample ID: MW-15I Matrix: WaterDate Collected: 11/03/21 14:50 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Chlorodibromomethane ND 5.00 ug/L 11/17/21 21:07 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 21:07 1ChloroethaneND 5.00 ug/L 11/17/21 21:07 1ChloroformND 5.00 ug/L 11/17/21 21:07 1ChloromethaneND 5.00 ug/L 11/17/21 21:07 1CyclohexaneND 5.00 ug/L 11/17/21 21:07 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 21:07 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 21:07 11,3-Dichlorobenzene ND 5.00 ug/L 11/17/21 21:07 11,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 21:07 1DichlorodifluoromethaneND 5.00 ug/L 11/17/21 21:07 11,1-Dichloroethane ND 5.00 ug/L 11/17/21 21:07 11,2-Dichloroethane ND 5.00 ug/L 11/17/21 21:07 1cis-1,2-Dichloroethene 7.51 5.00 ug/L 11/17/21 21:07 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 21:07 11,1-Dichloroethene ND 5.00 ug/L 11/17/21 21:07 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 21:07 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 21:07 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 21:07 11,4-Dioxane ND 5.00 ug/L 11/17/21 21:07 1EthylbenzeneND 5.00 ug/L 11/17/21 21:07 12-Hexanone ND 5.00 ug/L 11/17/21 21:07 1IsopropylbenzeneND 25.0 ug/L 11/17/21 21:07 1Methyl acetate ND 5.00 ug/L 11/17/21 21:07 1MethylcyclohexaneND 5.00 ug/L 11/17/21 21:07 1Methylene Chloride ND 5.00 ug/L 11/17/21 21:07 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 21:07 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 21:07 1StyreneND 5.00 ug/L 11/17/21 21:07 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 21:07 1TetrachloroetheneND 5.00 ug/L 11/17/21 21:07 1TolueneND 5.00 ug/L 11/17/21 21:07 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 21:07 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 21:07 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 21:07 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 21:07 1TrichloroetheneND 5.00 ug/L 11/17/21 21:07 1TrichlorofluoromethaneND 5.00 ug/L 11/17/21 21:07 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 21:07 1Vinyl chloride ND 5.00 ug/L 11/17/21 21:07 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 21:07 1o-Xylene ND 5.00 ug/L 11/17/21 21:07 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)133 52 -151 11/17/21 21:07 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 11/17/21 21:07 153-124 4-Bromofluorobenzene (Surr)72 11/17/21 21:07 149-118 Dibromofluoromethane (Surr)133 S1+11/17/21 21:07 160-132 Eurofins TestAmerica, Pittsburgh Page 28 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-4Client Sample ID: MW-15I Matrix: WaterDate Collected: 11/03/21 14:50 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA RL MDL Acetone ND H *+ *1 20.0 ug/L 11/23/21 15:48 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/23/21 15:48 1BenzeneND H 5.00 ug/L 11/23/21 15:48 1ChlorobromomethaneND H 5.00 ug/L 11/23/21 15:48 1DichlorobromomethaneND H 5.00 ug/L 11/23/21 15:48 1BromoformND H 5.00 ug/L 11/23/21 15:48 1BromomethaneND H 5.00 ug/L 11/23/21 15:48 12-Butanone (MEK)ND H 5.00 ug/L 11/23/21 15:48 1Carbon disulfide ND H 5.00 ug/L 11/23/21 15:48 1Carbon tetrachloride ND H 5.00 ug/L 11/23/21 15:48 1ChlorobenzeneND H 5.00 ug/L 11/23/21 15:48 1ChlorodibromomethaneND H 5.00 ug/L 11/23/21 15:48 1ChloroethaneND H 5.00 ug/L 11/23/21 15:48 1ChloroformND H 5.00 ug/L 11/23/21 15:48 1ChloromethaneND H 5.00 ug/L 11/23/21 15:48 1CyclohexaneND H 5.00 ug/L 11/23/21 15:48 11,2-Dibromo-3-Chloropropane ND H 5.00 ug/L 11/23/21 15:48 11,2-Dichlorobenzene ND H 5.00 ug/L 11/23/21 15:48 11,3-Dichlorobenzene ND H 5.00 ug/L 11/23/21 15:48 11,4-Dichlorobenzene ND H 5.00 ug/L 11/23/21 15:48 1DichlorodifluoromethaneND H 5.00 ug/L 11/23/21 15:48 11,1-Dichloroethane ND H 5.00 ug/L 11/23/21 15:48 11,2-Dichloroethane ND H 5.00 ug/L 11/23/21 15:48 1cis-1,2-Dichloroethene 6.31 H 5.00 ug/L 11/23/21 15:48 1trans-1,2-Dichloroethene ND H 5.00 ug/L 11/23/21 15:48 11,1-Dichloroethene ND H 5.00 ug/L 11/23/21 15:48 11,2-Dichloropropane ND H 5.00 ug/L 11/23/21 15:48 1cis-1,3-Dichloropropene ND H 5.00 ug/L 11/23/21 15:48 1trans-1,3-Dichloropropene ND H 1000 ug/L 11/23/21 15:48 11,4-Dioxane ND H *- 5.00 ug/L 11/23/21 15:48 1EthylbenzeneND H 5.00 ug/L 11/23/21 15:48 12-Hexanone ND H *+ 5.00 ug/L 11/23/21 15:48 1IsopropylbenzeneND H 25.0 ug/L 11/23/21 15:48 1Methyl acetate ND H 5.00 ug/L 11/23/21 15:48 1MethylcyclohexaneND H 5.00 ug/L 11/23/21 15:48 1Methylene Chloride ND H 5.00 ug/L 11/23/21 15:48 14-Methyl-2-pentanone (MIBK)ND H 5.00 ug/L 11/23/21 15:48 1Methyl tert-butyl ether ND H 5.00 ug/L 11/23/21 15:48 1StyreneND H 5.00 ug/L 11/23/21 15:48 11,1,2,2-Tetrachloroethane ND H 5.00 ug/L 11/23/21 15:48 1TetrachloroetheneND H 5.00 ug/L 11/23/21 15:48 1TolueneND H 5.00 ug/L 11/23/21 15:48 11,2,3-Trichlorobenzene ND H 5.00 ug/L 11/23/21 15:48 11,2,4-Trichlorobenzene ND H 5.00 ug/L 11/23/21 15:48 11,1,1-Trichloroethane ND H 5.00 ug/L 11/23/21 15:48 11,1,2-Trichloroethane ND H 5.00 ug/L 11/23/21 15:48 1TrichloroetheneND H 5.00 ug/L 11/23/21 15:48 1TrichlorofluoromethaneND H 5.00 ug/L 11/23/21 15:48 11,1,2-Trichlorotrifluoroethane ND H 5.00 ug/L 11/23/21 15:48 1Vinyl chloride ND H Eurofins TestAmerica, Pittsburgh Page 29 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-4Client Sample ID: MW-15I Matrix: WaterDate Collected: 11/03/21 14:50 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA (Continued) RL MDL m-Xylene & p-Xylene ND H 5.00 ug/L 11/23/21 15:48 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/23/21 15:48 1o-Xylene ND H 5.00 ug/L 11/23/21 15:48 11,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)113 52 -151 11/23/21 15:48 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)105 11/23/21 15:48 153-124 4-Bromofluorobenzene (Surr)97 11/23/21 15:48 149-118 Dibromofluoromethane (Surr)105 11/23/21 15:48 160-132 Lab Sample ID: 180-129621-5Client Sample ID: MW-15 Matrix: WaterDate Collected: 11/03/21 15:45 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/11/21 16:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 95 50 -150 11/11/21 16:10 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 11/11/21 16:10 150-150 4-Bromofluorobenzene 103 11/11/21 16:10 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 21:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 21:32 1BenzeneND 5.00 ug/L 11/17/21 21:32 1ChlorobromomethaneND 5.00 ug/L 11/17/21 21:32 1DichlorobromomethaneND 5.00 ug/L 11/17/21 21:32 1BromoformND 5.00 ug/L 11/17/21 21:32 1BromomethaneND 5.00 ug/L 11/17/21 21:32 12-Butanone (MEK)ND 5.00 ug/L 11/17/21 21:32 1Carbon disulfide ND 5.00 ug/L 11/17/21 21:32 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 21:32 1ChlorobenzeneND 5.00 ug/L 11/17/21 21:32 1ChlorodibromomethaneND 5.00 ug/L 11/17/21 21:32 1ChloroethaneND 5.00 ug/L 11/17/21 21:32 1ChloroformND 5.00 ug/L 11/17/21 21:32 1ChloromethaneND 5.00 ug/L 11/17/21 21:32 1CyclohexaneND 5.00 ug/L 11/17/21 21:32 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 21:32 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 21:32 11,3-Dichlorobenzene ND 5.00 ug/L 11/17/21 21:32 11,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 21:32 1DichlorodifluoromethaneND 5.00 ug/L 11/17/21 21:32 11,1-Dichloroethane ND 5.00 ug/L 11/17/21 21:32 11,2-Dichloroethane ND 5.00 ug/L 11/17/21 21:32 1cis-1,2-Dichloroethene 6.16 5.00 ug/L 11/17/21 21:32 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 21:32 11,1-Dichloroethene ND 5.00 ug/L 11/17/21 21:32 11,2-Dichloropropane ND Eurofins TestAmerica, Pittsburgh Page 30 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-5Client Sample ID: MW-15 Matrix: WaterDate Collected: 11/03/21 15:45 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 21:32 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 21:32 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 21:32 11,4-Dioxane ND 5.00 ug/L 11/17/21 21:32 1EthylbenzeneND 5.00 ug/L 11/17/21 21:32 12-Hexanone ND 5.00 ug/L 11/17/21 21:32 1IsopropylbenzeneND 25.0 ug/L 11/17/21 21:32 1Methyl acetate ND 5.00 ug/L 11/17/21 21:32 1MethylcyclohexaneND 5.00 ug/L 11/17/21 21:32 1Methylene Chloride ND 5.00 ug/L 11/17/21 21:32 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 21:32 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 21:32 1StyreneND 5.00 ug/L 11/17/21 21:32 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 21:32 1TetrachloroetheneND 5.00 ug/L 11/17/21 21:32 1TolueneND 5.00 ug/L 11/17/21 21:32 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 21:32 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 21:32 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 21:32 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 21:32 1TrichloroetheneND 5.00 ug/L 11/17/21 21:32 1TrichlorofluoromethaneND 5.00 ug/L 11/17/21 21:32 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 21:32 1Vinyl chloride ND 5.00 ug/L 11/17/21 21:32 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 21:32 1o-Xylene ND 5.00 ug/L 11/17/21 21:32 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)128 52 -151 11/17/21 21:32 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)98 11/17/21 21:32 153-124 4-Bromofluorobenzene (Surr)75 11/17/21 21:32 149-118 Dibromofluoromethane (Surr)130 11/17/21 21:32 160-132 Lab Sample ID: 180-129621-6Client Sample ID: MW-15-c Matrix: WaterDate Collected: 11/03/21 16:15 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/11/21 16:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 95 50 -150 11/11/21 16:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 11/11/21 16:35 150-150 4-Bromofluorobenzene 103 11/11/21 16:35 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 21:57 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 21:57 1BenzeneND 5.00 ug/L 11/17/21 21:57 1ChlorobromomethaneND Eurofins TestAmerica, Pittsburgh Page 31 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-6Client Sample ID: MW-15-c Matrix: WaterDate Collected: 11/03/21 16:15 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Dichlorobromomethane ND 5.00 ug/L 11/17/21 21:57 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 21:57 1BromoformND 5.00 ug/L 11/17/21 21:57 1BromomethaneND 5.00 ug/L 11/17/21 21:57 12-Butanone (MEK)ND 5.00 ug/L 11/17/21 21:57 1Carbon disulfide ND 5.00 ug/L 11/17/21 21:57 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 21:57 1ChlorobenzeneND 5.00 ug/L 11/17/21 21:57 1ChlorodibromomethaneND 5.00 ug/L 11/17/21 21:57 1ChloroethaneND 5.00 ug/L 11/17/21 21:57 1ChloroformND 5.00 ug/L 11/17/21 21:57 1ChloromethaneND 5.00 ug/L 11/17/21 21:57 1CyclohexaneND 5.00 ug/L 11/17/21 21:57 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 21:57 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 21:57 11,3-Dichlorobenzene ND 5.00 ug/L 11/17/21 21:57 11,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 21:57 1DichlorodifluoromethaneND 5.00 ug/L 11/17/21 21:57 11,1-Dichloroethane ND 5.00 ug/L 11/17/21 21:57 11,2-Dichloroethane ND 5.00 ug/L 11/17/21 21:57 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 21:57 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 21:57 11,1-Dichloroethene ND 5.00 ug/L 11/17/21 21:57 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 21:57 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 21:57 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 21:57 11,4-Dioxane ND 5.00 ug/L 11/17/21 21:57 1EthylbenzeneND 5.00 ug/L 11/17/21 21:57 12-Hexanone ND 5.00 ug/L 11/17/21 21:57 1IsopropylbenzeneND 25.0 ug/L 11/17/21 21:57 1Methyl acetate ND 5.00 ug/L 11/17/21 21:57 1MethylcyclohexaneND 5.00 ug/L 11/17/21 21:57 1Methylene Chloride ND 5.00 ug/L 11/17/21 21:57 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 21:57 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 21:57 1StyreneND 5.00 ug/L 11/17/21 21:57 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 21:57 1TetrachloroetheneND 5.00 ug/L 11/17/21 21:57 1TolueneND 5.00 ug/L 11/17/21 21:57 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 21:57 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 21:57 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 21:57 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 21:57 1TrichloroetheneND 5.00 ug/L 11/17/21 21:57 1TrichlorofluoromethaneND 5.00 ug/L 11/17/21 21:57 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 21:57 1Vinyl chloride ND 5.00 ug/L 11/17/21 21:57 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 21:57 1o-Xylene ND 5.00 ug/L 11/17/21 21:57 11,2-Dibromoethane ND Eurofins TestAmerica, Pittsburgh Page 32 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-6Client Sample ID: MW-15-c Matrix: WaterDate Collected: 11/03/21 16:15 Date Received: 11/05/21 10:00 1,2-Dichloroethane-d4 (Surr)136 52 -151 11/17/21 21:57 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)92 11/17/21 21:57 153-124 4-Bromofluorobenzene (Surr)69 11/17/21 21:57 149-118 Dibromofluoromethane (Surr)138 S1+11/17/21 21:57 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA RL MDL Acetone ND H *+ *1 20.0 ug/L 11/23/21 16:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/23/21 16:14 1BenzeneND H 5.00 ug/L 11/23/21 16:14 1ChlorobromomethaneND H 5.00 ug/L 11/23/21 16:14 1DichlorobromomethaneND H 5.00 ug/L 11/23/21 16:14 1BromoformND H 5.00 ug/L 11/23/21 16:14 1BromomethaneND H 5.00 ug/L 11/23/21 16:14 12-Butanone (MEK)ND H 5.00 ug/L 11/23/21 16:14 1Carbon disulfide ND H 5.00 ug/L 11/23/21 16:14 1Carbon tetrachloride ND H 5.00 ug/L 11/23/21 16:14 1ChlorobenzeneND H 5.00 ug/L 11/23/21 16:14 1ChlorodibromomethaneND H 5.00 ug/L 11/23/21 16:14 1ChloroethaneND H 5.00 ug/L 11/23/21 16:14 1ChloroformND H 5.00 ug/L 11/23/21 16:14 1ChloromethaneND H 5.00 ug/L 11/23/21 16:14 1CyclohexaneND H 5.00 ug/L 11/23/21 16:14 11,2-Dibromo-3-Chloropropane ND H 5.00 ug/L 11/23/21 16:14 11,2-Dichlorobenzene ND H 5.00 ug/L 11/23/21 16:14 11,3-Dichlorobenzene ND H 5.00 ug/L 11/23/21 16:14 11,4-Dichlorobenzene ND H 5.00 ug/L 11/23/21 16:14 1DichlorodifluoromethaneND H 5.00 ug/L 11/23/21 16:14 11,1-Dichloroethane ND H 5.00 ug/L 11/23/21 16:14 11,2-Dichloroethane ND H 5.00 ug/L 11/23/21 16:14 1cis-1,2-Dichloroethene ND H 5.00 ug/L 11/23/21 16:14 1trans-1,2-Dichloroethene ND H 5.00 ug/L 11/23/21 16:14 11,1-Dichloroethene ND H 5.00 ug/L 11/23/21 16:14 11,2-Dichloropropane ND H 5.00 ug/L 11/23/21 16:14 1cis-1,3-Dichloropropene ND H 5.00 ug/L 11/23/21 16:14 1trans-1,3-Dichloropropene ND H 1000 ug/L 11/23/21 16:14 11,4-Dioxane ND H *- 5.00 ug/L 11/23/21 16:14 1EthylbenzeneND H 5.00 ug/L 11/23/21 16:14 12-Hexanone ND H *+ 5.00 ug/L 11/23/21 16:14 1IsopropylbenzeneND H 25.0 ug/L 11/23/21 16:14 1Methyl acetate ND H 5.00 ug/L 11/23/21 16:14 1MethylcyclohexaneND H 5.00 ug/L 11/23/21 16:14 1Methylene Chloride ND H 5.00 ug/L 11/23/21 16:14 14-Methyl-2-pentanone (MIBK)ND H 5.00 ug/L 11/23/21 16:14 1Methyl tert-butyl ether ND H 5.00 ug/L 11/23/21 16:14 1StyreneND H 5.00 ug/L 11/23/21 16:14 11,1,2,2-Tetrachloroethane ND H 5.00 ug/L 11/23/21 16:14 1TetrachloroetheneND H 5.00 ug/L 11/23/21 16:14 1TolueneND H 5.00 ug/L 11/23/21 16:14 11,2,3-Trichlorobenzene ND H 5.00 ug/L 11/23/21 16:14 11,2,4-Trichlorobenzene ND H Eurofins TestAmerica, Pittsburgh Page 33 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-6Client Sample ID: MW-15-c Matrix: WaterDate Collected: 11/03/21 16:15 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA (Continued) RL MDL 1,1,1-Trichloroethane ND H 5.00 ug/L 11/23/21 16:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/23/21 16:14 11,1,2-Trichloroethane ND H 5.00 ug/L 11/23/21 16:14 1TrichloroetheneND H 5.00 ug/L 11/23/21 16:14 1TrichlorofluoromethaneND H 5.00 ug/L 11/23/21 16:14 11,1,2-Trichlorotrifluoroethane ND H 5.00 ug/L 11/23/21 16:14 1Vinyl chloride ND H 5.00 ug/L 11/23/21 16:14 1m-Xylene & p-Xylene ND H 5.00 ug/L 11/23/21 16:14 1o-Xylene ND H 5.00 ug/L 11/23/21 16:14 11,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)116 52 -151 11/23/21 16:14 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)111 11/23/21 16:14 153-124 4-Bromofluorobenzene (Surr)90 11/23/21 16:14 149-118 Dibromofluoromethane (Surr)105 11/23/21 16:14 160-132 Lab Sample ID: 180-129621-7Client Sample ID: MW-9 Matrix: WaterDate Collected: 11/03/21 11:35 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 1.12 1.00 0.300 ug/L 11/11/21 17:00 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 94 50 -150 11/11/21 17:00 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/11/21 17:00 150-150 4-Bromofluorobenzene 103 11/11/21 17:00 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 22:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 22:22 1BenzeneND 5.00 ug/L 11/17/21 22:22 1ChlorobromomethaneND 5.00 ug/L 11/17/21 22:22 1DichlorobromomethaneND 5.00 ug/L 11/17/21 22:22 1BromoformND 5.00 ug/L 11/17/21 22:22 1BromomethaneND 5.00 ug/L 11/17/21 22:22 12-Butanone (MEK)ND 5.00 ug/L 11/17/21 22:22 1Carbon disulfide ND 5.00 ug/L 11/17/21 22:22 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 22:22 1ChlorobenzeneND 5.00 ug/L 11/17/21 22:22 1ChlorodibromomethaneND 5.00 ug/L 11/17/21 22:22 1ChloroethaneND 5.00 ug/L 11/17/21 22:22 1ChloroformND 5.00 ug/L 11/17/21 22:22 1ChloromethaneND 5.00 ug/L 11/17/21 22:22 1CyclohexaneND 5.00 ug/L 11/17/21 22:22 11,2-Dibromo-3-Chloropropane ND *3 5.00 ug/L 11/17/21 22:22 11,2-Dichlorobenzene ND *3 5.00 ug/L 11/17/21 22:22 11,3-Dichlorobenzene ND *3 5.00 ug/L 11/17/21 22:22 11,4-Dichlorobenzene ND *3 5.00 ug/L 11/17/21 22:22 1DichlorodifluoromethaneND Eurofins TestAmerica, Pittsburgh Page 34 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-7Client Sample ID: MW-9 Matrix: WaterDate Collected: 11/03/21 11:35 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,1-Dichloroethane ND 5.00 ug/L 11/17/21 22:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 22:22 11,2-Dichloroethane ND 5.00 ug/L 11/17/21 22:22 1cis-1,2-Dichloroethene 251 E 5.00 ug/L 11/17/21 22:22 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 22:22 11,1-Dichloroethene ND 5.00 ug/L 11/17/21 22:22 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 22:22 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 22:22 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 22:22 11,4-Dioxane ND 5.00 ug/L 11/17/21 22:22 1EthylbenzeneND 5.00 ug/L 11/17/21 22:22 12-Hexanone ND 5.00 ug/L 11/17/21 22:22 1IsopropylbenzeneND 25.0 ug/L 11/17/21 22:22 1Methyl acetate ND 5.00 ug/L 11/17/21 22:22 1MethylcyclohexaneND 5.00 ug/L 11/17/21 22:22 1Methylene Chloride ND 5.00 ug/L 11/17/21 22:22 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 22:22 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 22:22 1StyreneND 5.00 ug/L 11/17/21 22:22 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 22:22 1TetrachloroetheneND 5.00 ug/L 11/17/21 22:22 1TolueneND 5.00 ug/L 11/17/21 22:22 11,2,3-Trichlorobenzene ND *3 5.00 ug/L 11/17/21 22:22 11,2,4-Trichlorobenzene ND *3 5.00 ug/L 11/17/21 22:22 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 22:22 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 22:22 1TrichloroetheneND 5.00 ug/L 11/17/21 22:22 1TrichlorofluoromethaneND 5.00 ug/L 11/17/21 22:22 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 22:22 1Vinyl chloride ND 5.00 ug/L 11/17/21 22:22 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 22:22 1o-Xylene ND 5.00 ug/L 11/17/21 22:22 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)133 52 -151 11/17/21 22:22 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)97 11/17/21 22:22 153-124 4-Bromofluorobenzene (Surr)74 11/17/21 22:22 149-118 Dibromofluoromethane (Surr)127 11/17/21 22:22 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL RL MDL Acetone ND H *+ *1 400 ug/L 11/23/21 16:40 20 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 100 ug/L 11/23/21 16:40 20BenzeneND H 100 ug/L 11/23/21 16:40 20ChlorobromomethaneND H 100 ug/L 11/23/21 16:40 20DichlorobromomethaneND H 100 ug/L 11/23/21 16:40 20BromoformND H 100 ug/L 11/23/21 16:40 20BromomethaneND H 100 ug/L 11/23/21 16:40 202-Butanone (MEK)ND H 100 ug/L 11/23/21 16:40 20Carbon disulfide ND H 100 ug/L 11/23/21 16:40 20Carbon tetrachloride ND H Eurofins TestAmerica, Pittsburgh Page 35 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-7Client Sample ID: MW-9 Matrix: WaterDate Collected: 11/03/21 11:35 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL (Continued) RL MDL Chlorobenzene ND H 100 ug/L 11/23/21 16:40 20 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 100 ug/L 11/23/21 16:40 20ChlorodibromomethaneND H 100 ug/L 11/23/21 16:40 20ChloroethaneND H 100 ug/L 11/23/21 16:40 20ChloroformND H 100 ug/L 11/23/21 16:40 20ChloromethaneND H 100 ug/L 11/23/21 16:40 20CyclohexaneND H 100 ug/L 11/23/21 16:40 201,2-Dibromo-3-Chloropropane ND H 100 ug/L 11/23/21 16:40 201,2-Dichlorobenzene ND H 100 ug/L 11/23/21 16:40 201,3-Dichlorobenzene ND H 100 ug/L 11/23/21 16:40 201,4-Dichlorobenzene ND H 100 ug/L 11/23/21 16:40 20DichlorodifluoromethaneND H 100 ug/L 11/23/21 16:40 201,1-Dichloroethane ND H 100 ug/L 11/23/21 16:40 201,2-Dichloroethane ND H 100 ug/L 11/23/21 16:40 20cis-1,2-Dichloroethene 208 H 100 ug/L 11/23/21 16:40 20trans-1,2-Dichloroethene ND H 100 ug/L 11/23/21 16:40 201,1-Dichloroethene ND H 100 ug/L 11/23/21 16:40 201,2-Dichloropropane ND H 100 ug/L 11/23/21 16:40 20cis-1,3-Dichloropropene ND H 100 ug/L 11/23/21 16:40 20trans-1,3-Dichloropropene ND H 20000 ug/L 11/23/21 16:40 201,4-Dioxane ND H *- 100 ug/L 11/23/21 16:40 20EthylbenzeneND H 100 ug/L 11/23/21 16:40 202-Hexanone ND H *+ 100 ug/L 11/23/21 16:40 20IsopropylbenzeneND H 500 ug/L 11/23/21 16:40 20Methyl acetate ND H 100 ug/L 11/23/21 16:40 20MethylcyclohexaneND H 100 ug/L 11/23/21 16:40 20Methylene Chloride ND H 100 ug/L 11/23/21 16:40 204-Methyl-2-pentanone (MIBK)ND H 100 ug/L 11/23/21 16:40 20Methyl tert-butyl ether ND H 100 ug/L 11/23/21 16:40 20StyreneND H 100 ug/L 11/23/21 16:40 201,1,2,2-Tetrachloroethane ND H 100 ug/L 11/23/21 16:40 20TetrachloroetheneND H 100 ug/L 11/23/21 16:40 20TolueneND H 100 ug/L 11/23/21 16:40 201,2,3-Trichlorobenzene ND H 100 ug/L 11/23/21 16:40 201,2,4-Trichlorobenzene ND H 100 ug/L 11/23/21 16:40 201,1,1-Trichloroethane ND H 100 ug/L 11/23/21 16:40 201,1,2-Trichloroethane ND H 100 ug/L 11/23/21 16:40 20TrichloroetheneND H 100 ug/L 11/23/21 16:40 20TrichlorofluoromethaneND H 100 ug/L 11/23/21 16:40 201,1,2-Trichlorotrifluoroethane ND H 100 ug/L 11/23/21 16:40 20Vinyl chloride ND H 100 ug/L 11/23/21 16:40 20m-Xylene & p-Xylene ND H 100 ug/L 11/23/21 16:40 20o-Xylene ND H 100 ug/L 11/23/21 16:40 201,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)125 52 -151 11/23/21 16:40 20 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)104 11/23/21 16:40 2053-124 4-Bromofluorobenzene (Surr)103 11/23/21 16:40 2049-118 Dibromofluoromethane (Surr)108 11/23/21 16:40 2060-132 Eurofins TestAmerica, Pittsburgh Page 36 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-8Client Sample ID: MW-9I Matrix: WaterDate Collected: 11/03/21 12:35 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 5.90 1.00 0.300 ug/L 11/11/21 17:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 93 50 -150 11/11/21 17:25 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 11/11/21 17:25 150-150 4-Bromofluorobenzene 103 11/11/21 17:25 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 22:48 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 22:48 1BenzeneND 5.00 ug/L 11/17/21 22:48 1ChlorobromomethaneND 5.00 ug/L 11/17/21 22:48 1DichlorobromomethaneND 5.00 ug/L 11/17/21 22:48 1BromoformND 5.00 ug/L 11/17/21 22:48 1BromomethaneND 5.00 ug/L 11/17/21 22:48 12-Butanone (MEK)ND 5.00 ug/L 11/17/21 22:48 1Carbon disulfide ND 5.00 ug/L 11/17/21 22:48 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 22:48 1ChlorobenzeneND 5.00 ug/L 11/17/21 22:48 1ChlorodibromomethaneND 5.00 ug/L 11/17/21 22:48 1ChloroethaneND 5.00 ug/L 11/17/21 22:48 1ChloroformND 5.00 ug/L 11/17/21 22:48 1ChloromethaneND 5.00 ug/L 11/17/21 22:48 1CyclohexaneND 5.00 ug/L 11/17/21 22:48 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 22:48 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 22:48 11,3-Dichlorobenzene ND 5.00 ug/L 11/17/21 22:48 11,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 22:48 1DichlorodifluoromethaneND 5.00 ug/L 11/17/21 22:48 11,1-Dichloroethane ND 5.00 ug/L 11/17/21 22:48 11,2-Dichloroethane 36.5 5.00 ug/L 11/17/21 22:48 1cis-1,2-Dichloroethene 1470 E 5.00 ug/L 11/17/21 22:48 1trans-1,2-Dichloroethene 26.6 5.00 ug/L 11/17/21 22:48 11,1-Dichloroethene 27.9 5.00 ug/L 11/17/21 22:48 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 22:48 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 22:48 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 22:48 11,4-Dioxane ND 5.00 ug/L 11/17/21 22:48 1EthylbenzeneND 5.00 ug/L 11/17/21 22:48 12-Hexanone ND 5.00 ug/L 11/17/21 22:48 1IsopropylbenzeneND 25.0 ug/L 11/17/21 22:48 1Methyl acetate ND 5.00 ug/L 11/17/21 22:48 1MethylcyclohexaneND 5.00 ug/L 11/17/21 22:48 1Methylene Chloride ND 5.00 ug/L 11/17/21 22:48 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 22:48 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 22:48 1StyreneND 5.00 ug/L 11/17/21 22:48 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 22:48 1Tetrachloroethene8.82 5.00 ug/L 11/17/21 22:48 1TolueneND Eurofins TestAmerica, Pittsburgh Page 37 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-8Client Sample ID: MW-9I Matrix: WaterDate Collected: 11/03/21 12:35 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 22:48 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 22:48 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 22:48 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 22:48 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 22:48 1Trichloroethene199 E 5.00 ug/L 11/17/21 22:48 1TrichlorofluoromethaneND 5.00 ug/L 11/17/21 22:48 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 22:48 1Vinyl chloride 14.6 5.00 ug/L 11/17/21 22:48 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 22:48 1o-Xylene ND 5.00 ug/L 11/17/21 22:48 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)120 52 -151 11/17/21 22:48 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 11/17/21 22:48 153-124 4-Bromofluorobenzene (Surr)71 11/17/21 22:48 149-118 Dibromofluoromethane (Surr)118 11/17/21 22:48 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL RL MDL Acetone ND H *+ *1 4000 ug/L 11/23/21 17:07 200 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1000 ug/L 11/23/21 17:07 200BenzeneND H 1000 ug/L 11/23/21 17:07 200ChlorobromomethaneND H 1000 ug/L 11/23/21 17:07 200DichlorobromomethaneND H 1000 ug/L 11/23/21 17:07 200BromoformND H 1000 ug/L 11/23/21 17:07 200BromomethaneND H 1000 ug/L 11/23/21 17:07 2002-Butanone (MEK)ND H 1000 ug/L 11/23/21 17:07 200Carbon disulfide ND H 1000 ug/L 11/23/21 17:07 200Carbon tetrachloride ND H 1000 ug/L 11/23/21 17:07 200ChlorobenzeneND H 1000 ug/L 11/23/21 17:07 200ChlorodibromomethaneND H 1000 ug/L 11/23/21 17:07 200ChloroethaneND H 1000 ug/L 11/23/21 17:07 200ChloroformND H 1000 ug/L 11/23/21 17:07 200ChloromethaneND H 1000 ug/L 11/23/21 17:07 200CyclohexaneND H 1000 ug/L 11/23/21 17:07 2001,2-Dibromo-3-Chloropropane ND H 1000 ug/L 11/23/21 17:07 2001,2-Dichlorobenzene ND H 1000 ug/L 11/23/21 17:07 2001,3-Dichlorobenzene ND H 1000 ug/L 11/23/21 17:07 2001,4-Dichlorobenzene ND H 1000 ug/L 11/23/21 17:07 200DichlorodifluoromethaneND H 1000 ug/L 11/23/21 17:07 2001,1-Dichloroethane ND H 1000 ug/L 11/23/21 17:07 2001,2-Dichloroethane ND H 1000 ug/L 11/23/21 17:07 200cis-1,2-Dichloroethene 1620 H 1000 ug/L 11/23/21 17:07 200trans-1,2-Dichloroethene ND H 1000 ug/L 11/23/21 17:07 2001,1-Dichloroethene ND H 1000 ug/L 11/23/21 17:07 2001,2-Dichloropropane ND H 1000 ug/L 11/23/21 17:07 200cis-1,3-Dichloropropene ND H 1000 ug/L 11/23/21 17:07 200trans-1,3-Dichloropropene ND H 200000 ug/L 11/23/21 17:07 2001,4-Dioxane ND H *- 1000 ug/L 11/23/21 17:07 200EthylbenzeneND H Eurofins TestAmerica, Pittsburgh Page 38 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-8Client Sample ID: MW-9I Matrix: WaterDate Collected: 11/03/21 12:35 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL (Continued) RL MDL 2-Hexanone ND H *+1000 ug/L 11/23/21 17:07 200 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1000 ug/L 11/23/21 17:07 200IsopropylbenzeneND H 5000 ug/L 11/23/21 17:07 200Methyl acetate ND H 1000 ug/L 11/23/21 17:07 200MethylcyclohexaneND H 1000 ug/L 11/23/21 17:07 200Methylene Chloride ND H 1000 ug/L 11/23/21 17:07 2004-Methyl-2-pentanone (MIBK)ND H 1000 ug/L 11/23/21 17:07 200Methyl tert-butyl ether ND H 1000 ug/L 11/23/21 17:07 200StyreneND H 1000 ug/L 11/23/21 17:07 2001,1,2,2-Tetrachloroethane ND H 1000 ug/L 11/23/21 17:07 200TetrachloroetheneND H 1000 ug/L 11/23/21 17:07 200TolueneND H 1000 ug/L 11/23/21 17:07 2001,2,3-Trichlorobenzene ND H 1000 ug/L 11/23/21 17:07 2001,2,4-Trichlorobenzene ND H 1000 ug/L 11/23/21 17:07 2001,1,1-Trichloroethane ND H 1000 ug/L 11/23/21 17:07 2001,1,2-Trichloroethane ND H 1000 ug/L 11/23/21 17:07 200TrichloroetheneND H 1000 ug/L 11/23/21 17:07 200TrichlorofluoromethaneND H 1000 ug/L 11/23/21 17:07 2001,1,2-Trichlorotrifluoroethane ND H 1000 ug/L 11/23/21 17:07 200Vinyl chloride ND H 1000 ug/L 11/23/21 17:07 200m-Xylene & p-Xylene ND H 1000 ug/L 11/23/21 17:07 200o-Xylene ND H 1000 ug/L 11/23/21 17:07 2001,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)120 52 -151 11/23/21 17:07 200 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)111 11/23/21 17:07 20053-124 4-Bromofluorobenzene (Surr)97 11/23/21 17:07 20049-118 Dibromofluoromethane (Surr)106 11/23/21 17:07 20060-132 Lab Sample ID: 180-129621-9Client Sample ID: MW-9I-a Matrix: WaterDate Collected: 11/03/21 12:35 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 5.58 1.00 0.300 ug/L 11/11/21 17:50 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 92 50 -150 11/11/21 17:50 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 11/11/21 17:50 150-150 4-Bromofluorobenzene 103 11/11/21 17:50 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 23:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 23:12 1BenzeneND 5.00 ug/L 11/17/21 23:12 1ChlorobromomethaneND 5.00 ug/L 11/17/21 23:12 1DichlorobromomethaneND 5.00 ug/L 11/17/21 23:12 1BromoformND 5.00 ug/L 11/17/21 23:12 1BromomethaneND 5.00 ug/L 11/17/21 23:12 12-Butanone (MEK)ND Eurofins TestAmerica, Pittsburgh Page 39 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-9Client Sample ID: MW-9I-a Matrix: WaterDate Collected: 11/03/21 12:35 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Carbon disulfide ND 5.00 ug/L 11/17/21 23:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 23:12 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 23:12 1ChlorobenzeneND 5.00 ug/L 11/17/21 23:12 1ChlorodibromomethaneND 5.00 ug/L 11/17/21 23:12 1ChloroethaneND 5.00 ug/L 11/17/21 23:12 1ChloroformND 5.00 ug/L 11/17/21 23:12 1ChloromethaneND 5.00 ug/L 11/17/21 23:12 1CyclohexaneND 5.00 ug/L 11/17/21 23:12 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 23:12 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 23:12 11,3-Dichlorobenzene ND 5.00 ug/L 11/17/21 23:12 11,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 23:12 1DichlorodifluoromethaneND 5.00 ug/L 11/17/21 23:12 11,1-Dichloroethane ND 5.00 ug/L 11/17/21 23:12 11,2-Dichloroethane 37.1 5.00 ug/L 11/17/21 23:12 1cis-1,2-Dichloroethene 1520 E 5.00 ug/L 11/17/21 23:12 1trans-1,2-Dichloroethene 28.7 5.00 ug/L 11/17/21 23:12 11,1-Dichloroethene 20.8 5.00 ug/L 11/17/21 23:12 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 23:12 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 23:12 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 23:12 11,4-Dioxane ND 5.00 ug/L 11/17/21 23:12 1EthylbenzeneND 5.00 ug/L 11/17/21 23:12 12-Hexanone ND 5.00 ug/L 11/17/21 23:12 1IsopropylbenzeneND 25.0 ug/L 11/17/21 23:12 1Methyl acetate ND 5.00 ug/L 11/17/21 23:12 1MethylcyclohexaneND 5.00 ug/L 11/17/21 23:12 1Methylene Chloride ND 5.00 ug/L 11/17/21 23:12 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 23:12 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 23:12 1StyreneND 5.00 ug/L 11/17/21 23:12 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 23:12 1Tetrachloroethene9.31 5.00 ug/L 11/17/21 23:12 1TolueneND 5.00 ug/L 11/17/21 23:12 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 23:12 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 23:12 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 23:12 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 23:12 1Trichloroethene212 E 5.00 ug/L 11/17/21 23:12 1TrichlorofluoromethaneND 5.00 ug/L 11/17/21 23:12 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 23:12 1Vinyl chloride ND 5.00 ug/L 11/17/21 23:12 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 23:12 1o-Xylene ND 5.00 ug/L 11/17/21 23:12 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)118 52 -151 11/17/21 23:12 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 11/17/21 23:12 153-124 4-Bromofluorobenzene (Surr)76 11/17/21 23:12 149-118 Eurofins TestAmerica, Pittsburgh Page 40 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-9Client Sample ID: MW-9I-a Matrix: WaterDate Collected: 11/03/21 12:35 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Dibromofluoromethane (Surr)119 60 -132 11/17/21 23:12 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL RL MDL Acetone ND H *+ *1 4000 ug/L 11/23/21 17:33 200 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1000 ug/L 11/23/21 17:33 200BenzeneND H 1000 ug/L 11/23/21 17:33 200ChlorobromomethaneND H 1000 ug/L 11/23/21 17:33 200DichlorobromomethaneND H 1000 ug/L 11/23/21 17:33 200BromoformND H 1000 ug/L 11/23/21 17:33 200BromomethaneND H 1000 ug/L 11/23/21 17:33 2002-Butanone (MEK)ND H 1000 ug/L 11/23/21 17:33 200Carbon disulfide ND H 1000 ug/L 11/23/21 17:33 200Carbon tetrachloride ND H 1000 ug/L 11/23/21 17:33 200ChlorobenzeneND H 1000 ug/L 11/23/21 17:33 200ChlorodibromomethaneND H 1000 ug/L 11/23/21 17:33 200ChloroethaneND H 1000 ug/L 11/23/21 17:33 200ChloroformND H 1000 ug/L 11/23/21 17:33 200ChloromethaneND H 1000 ug/L 11/23/21 17:33 200CyclohexaneND H 1000 ug/L 11/23/21 17:33 2001,2-Dibromo-3-Chloropropane ND H 1000 ug/L 11/23/21 17:33 2001,2-Dichlorobenzene ND H 1000 ug/L 11/23/21 17:33 2001,3-Dichlorobenzene ND H 1000 ug/L 11/23/21 17:33 2001,4-Dichlorobenzene ND H 1000 ug/L 11/23/21 17:33 200DichlorodifluoromethaneND H 1000 ug/L 11/23/21 17:33 2001,1-Dichloroethane ND H 1000 ug/L 11/23/21 17:33 2001,2-Dichloroethane ND H 1000 ug/L 11/23/21 17:33 200cis-1,2-Dichloroethene 1690 H 1000 ug/L 11/23/21 17:33 200trans-1,2-Dichloroethene ND H 1000 ug/L 11/23/21 17:33 2001,1-Dichloroethene ND H 1000 ug/L 11/23/21 17:33 2001,2-Dichloropropane ND H 1000 ug/L 11/23/21 17:33 200cis-1,3-Dichloropropene ND H 1000 ug/L 11/23/21 17:33 200trans-1,3-Dichloropropene ND H 200000 ug/L 11/23/21 17:33 2001,4-Dioxane ND H *- 1000 ug/L 11/23/21 17:33 200EthylbenzeneND H 1000 ug/L 11/23/21 17:33 2002-Hexanone ND H *+ 1000 ug/L 11/23/21 17:33 200IsopropylbenzeneND H 5000 ug/L 11/23/21 17:33 200Methyl acetate ND H 1000 ug/L 11/23/21 17:33 200MethylcyclohexaneND H 1000 ug/L 11/23/21 17:33 200Methylene Chloride ND H 1000 ug/L 11/23/21 17:33 2004-Methyl-2-pentanone (MIBK)ND H 1000 ug/L 11/23/21 17:33 200Methyl tert-butyl ether ND H 1000 ug/L 11/23/21 17:33 200StyreneND H 1000 ug/L 11/23/21 17:33 2001,1,2,2-Tetrachloroethane ND H 1000 ug/L 11/23/21 17:33 200TetrachloroetheneND H 1000 ug/L 11/23/21 17:33 200TolueneND H 1000 ug/L 11/23/21 17:33 2001,2,3-Trichlorobenzene ND H 1000 ug/L 11/23/21 17:33 2001,2,4-Trichlorobenzene ND H 1000 ug/L 11/23/21 17:33 2001,1,1-Trichloroethane ND H 1000 ug/L 11/23/21 17:33 2001,1,2-Trichloroethane ND H Eurofins TestAmerica, Pittsburgh Page 41 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-9Client Sample ID: MW-9I-a Matrix: WaterDate Collected: 11/03/21 12:35 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL (Continued) RL MDL Trichloroethene ND H 1000 ug/L 11/23/21 17:33 200 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 1000 ug/L 11/23/21 17:33 200TrichlorofluoromethaneND H 1000 ug/L 11/23/21 17:33 2001,1,2-Trichlorotrifluoroethane ND H 1000 ug/L 11/23/21 17:33 200Vinyl chloride ND H 1000 ug/L 11/23/21 17:33 200m-Xylene & p-Xylene ND H 1000 ug/L 11/23/21 17:33 200o-Xylene ND H 1000 ug/L 11/23/21 17:33 2001,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)145 52 -151 11/23/21 17:33 200 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)99 11/23/21 17:33 20053-124 4-Bromofluorobenzene (Surr)112 11/23/21 17:33 20049-118 Dibromofluoromethane (Surr)116 11/23/21 17:33 20060-132 Lab Sample ID: 180-129621-10Client Sample ID: MW-10 Matrix: WaterDate Collected: 11/03/21 14:05 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 1.36 1.00 0.300 ug/L 11/11/21 18:15 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 94 50 -150 11/11/21 18:15 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 11/11/21 18:15 150-150 4-Bromofluorobenzene 103 11/11/21 18:15 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 23:36 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 23:36 1BenzeneND 5.00 ug/L 11/17/21 23:36 1ChlorobromomethaneND 5.00 ug/L 11/17/21 23:36 1DichlorobromomethaneND 5.00 ug/L 11/17/21 23:36 1BromoformND 5.00 ug/L 11/17/21 23:36 1BromomethaneND 5.00 ug/L 11/17/21 23:36 12-Butanone (MEK)ND 5.00 ug/L 11/17/21 23:36 1Carbon disulfide ND 5.00 ug/L 11/17/21 23:36 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 23:36 1ChlorobenzeneND 5.00 ug/L 11/17/21 23:36 1ChlorodibromomethaneND 5.00 ug/L 11/17/21 23:36 1ChloroethaneND 5.00 ug/L 11/17/21 23:36 1ChloroformND 5.00 ug/L 11/17/21 23:36 1ChloromethaneND 5.00 ug/L 11/17/21 23:36 1CyclohexaneND 5.00 ug/L 11/17/21 23:36 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 23:36 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 23:36 11,3-Dichlorobenzene ND 5.00 ug/L 11/17/21 23:36 11,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 23:36 1DichlorodifluoromethaneND 5.00 ug/L 11/17/21 23:36 11,1-Dichloroethane ND 5.00 ug/L 11/17/21 23:36 11,2-Dichloroethane ND Eurofins TestAmerica, Pittsburgh Page 42 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-10Client Sample ID: MW-10 Matrix: WaterDate Collected: 11/03/21 14:05 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL cis-1,2-Dichloroethene 406 E 5.00 ug/L 11/17/21 23:36 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 23:36 1trans-1,2-Dichloroethene 12.2 5.00 ug/L 11/17/21 23:36 11,1-Dichloroethene 5.08 5.00 ug/L 11/17/21 23:36 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 23:36 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 23:36 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 23:36 11,4-Dioxane ND 5.00 ug/L 11/17/21 23:36 1EthylbenzeneND 5.00 ug/L 11/17/21 23:36 12-Hexanone ND 5.00 ug/L 11/17/21 23:36 1IsopropylbenzeneND 25.0 ug/L 11/17/21 23:36 1Methyl acetate ND 5.00 ug/L 11/17/21 23:36 1MethylcyclohexaneND 5.00 ug/L 11/17/21 23:36 1Methylene Chloride ND 5.00 ug/L 11/17/21 23:36 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 23:36 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 23:36 1StyreneND 5.00 ug/L 11/17/21 23:36 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 23:36 1TetrachloroetheneND 5.00 ug/L 11/17/21 23:36 1TolueneND 5.00 ug/L 11/17/21 23:36 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 23:36 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 23:36 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 23:36 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 23:36 1TrichloroetheneND 5.00 ug/L 11/17/21 23:36 1TrichlorofluoromethaneND 5.00 ug/L 11/17/21 23:36 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 23:36 1Vinyl chloride ND 5.00 ug/L 11/17/21 23:36 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 23:36 1o-Xylene ND 5.00 ug/L 11/17/21 23:36 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)123 52 -151 11/17/21 23:36 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)92 11/17/21 23:36 153-124 4-Bromofluorobenzene (Surr)83 11/17/21 23:36 149-118 Dibromofluoromethane (Surr)127 11/17/21 23:36 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL RL MDL Acetone ND H *+ *1 1000 ug/L 11/23/21 17:59 50 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 250 ug/L 11/23/21 17:59 50BenzeneND H 250 ug/L 11/23/21 17:59 50ChlorobromomethaneND H 250 ug/L 11/23/21 17:59 50DichlorobromomethaneND H 250 ug/L 11/23/21 17:59 50BromoformND H 250 ug/L 11/23/21 17:59 50BromomethaneND H 250 ug/L 11/23/21 17:59 502-Butanone (MEK)ND H 250 ug/L 11/23/21 17:59 50Carbon disulfide ND H 250 ug/L 11/23/21 17:59 50Carbon tetrachloride ND H 250 ug/L 11/23/21 17:59 50ChlorobenzeneND H 250 ug/L 11/23/21 17:59 50ChlorodibromomethaneND H Eurofins TestAmerica, Pittsburgh Page 43 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-10Client Sample ID: MW-10 Matrix: WaterDate Collected: 11/03/21 14:05 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL (Continued) RL MDL Chloroethane ND H 250 ug/L 11/23/21 17:59 50 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 250 ug/L 11/23/21 17:59 50ChloroformND H 250 ug/L 11/23/21 17:59 50ChloromethaneND H 250 ug/L 11/23/21 17:59 50CyclohexaneND H 250 ug/L 11/23/21 17:59 501,2-Dibromo-3-Chloropropane ND H 250 ug/L 11/23/21 17:59 501,2-Dichlorobenzene ND H 250 ug/L 11/23/21 17:59 501,3-Dichlorobenzene ND H 250 ug/L 11/23/21 17:59 501,4-Dichlorobenzene ND H 250 ug/L 11/23/21 17:59 50DichlorodifluoromethaneND H 250 ug/L 11/23/21 17:59 501,1-Dichloroethane ND H 250 ug/L 11/23/21 17:59 501,2-Dichloroethane ND H 250 ug/L 11/23/21 17:59 50cis-1,2-Dichloroethene 335 H 250 ug/L 11/23/21 17:59 50trans-1,2-Dichloroethene ND H 250 ug/L 11/23/21 17:59 501,1-Dichloroethene ND H 250 ug/L 11/23/21 17:59 501,2-Dichloropropane ND H 250 ug/L 11/23/21 17:59 50cis-1,3-Dichloropropene ND H 250 ug/L 11/23/21 17:59 50trans-1,3-Dichloropropene ND H 50000 ug/L 11/23/21 17:59 501,4-Dioxane ND H *- 250 ug/L 11/23/21 17:59 50EthylbenzeneND H 250 ug/L 11/23/21 17:59 502-Hexanone ND H *+ 250 ug/L 11/23/21 17:59 50IsopropylbenzeneND H 1250 ug/L 11/23/21 17:59 50Methyl acetate ND H 250 ug/L 11/23/21 17:59 50MethylcyclohexaneND H 250 ug/L 11/23/21 17:59 50Methylene Chloride ND H 250 ug/L 11/23/21 17:59 504-Methyl-2-pentanone (MIBK)ND H 250 ug/L 11/23/21 17:59 50Methyl tert-butyl ether ND H 250 ug/L 11/23/21 17:59 50StyreneND H 250 ug/L 11/23/21 17:59 501,1,2,2-Tetrachloroethane ND H 250 ug/L 11/23/21 17:59 50TetrachloroetheneND H 250 ug/L 11/23/21 17:59 50TolueneND H 250 ug/L 11/23/21 17:59 501,2,3-Trichlorobenzene ND H 250 ug/L 11/23/21 17:59 501,2,4-Trichlorobenzene ND H 250 ug/L 11/23/21 17:59 501,1,1-Trichloroethane ND H 250 ug/L 11/23/21 17:59 501,1,2-Trichloroethane ND H 250 ug/L 11/23/21 17:59 50TrichloroetheneND H 250 ug/L 11/23/21 17:59 50TrichlorofluoromethaneND H 250 ug/L 11/23/21 17:59 501,1,2-Trichlorotrifluoroethane ND H 250 ug/L 11/23/21 17:59 50Vinyl chloride ND H 250 ug/L 11/23/21 17:59 50m-Xylene & p-Xylene ND H 250 ug/L 11/23/21 17:59 50o-Xylene ND H 250 ug/L 11/23/21 17:59 501,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)129 52 -151 11/23/21 17:59 50 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)121 11/23/21 17:59 5053-124 4-Bromofluorobenzene (Surr)101 11/23/21 17:59 5049-118 Dibromofluoromethane (Surr)120 11/23/21 17:59 5060-132 Eurofins TestAmerica, Pittsburgh Page 44 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-11Client Sample ID: MW-10I Matrix: WaterDate Collected: 11/03/21 14:50 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 4.15 1.00 0.300 ug/L 11/11/21 18:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 94 50 -150 11/11/21 18:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/11/21 18:40 150-150 4-Bromofluorobenzene 102 11/11/21 18:40 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 00:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 00:01 1BenzeneND 5.00 ug/L 11/17/21 00:01 1ChlorobromomethaneND 5.00 ug/L 11/17/21 00:01 1DichlorobromomethaneND 5.00 ug/L 11/17/21 00:01 1BromoformND 5.00 ug/L 11/17/21 00:01 1BromomethaneND 5.00 ug/L 11/17/21 00:01 12-Butanone (MEK)ND 5.00 ug/L 11/17/21 00:01 1Carbon disulfide ND 5.00 ug/L 11/17/21 00:01 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 00:01 1ChlorobenzeneND 5.00 ug/L 11/17/21 00:01 1ChlorodibromomethaneND 5.00 ug/L 11/17/21 00:01 1ChloroethaneND 5.00 ug/L 11/17/21 00:01 1ChloroformND 5.00 ug/L 11/17/21 00:01 1ChloromethaneND 5.00 ug/L 11/17/21 00:01 1CyclohexaneND 5.00 ug/L 11/17/21 00:01 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 00:01 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 00:01 11,3-Dichlorobenzene ND 5.00 ug/L 11/17/21 00:01 11,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 00:01 1DichlorodifluoromethaneND 5.00 ug/L 11/17/21 00:01 11,1-Dichloroethane 5.62 5.00 ug/L 11/17/21 00:01 11,2-Dichloroethane ND 5.00 ug/L 11/17/21 00:01 1cis-1,2-Dichloroethene 871 E 5.00 ug/L 11/17/21 00:01 1trans-1,2-Dichloroethene 30.3 5.00 ug/L 11/17/21 00:01 11,1-Dichloroethene 16.7 5.00 ug/L 11/17/21 00:01 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 00:01 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 00:01 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 00:01 11,4-Dioxane ND 5.00 ug/L 11/17/21 00:01 1EthylbenzeneND 5.00 ug/L 11/17/21 00:01 12-Hexanone ND 5.00 ug/L 11/17/21 00:01 1IsopropylbenzeneND 25.0 ug/L 11/17/21 00:01 1Methyl acetate ND 5.00 ug/L 11/17/21 00:01 1MethylcyclohexaneND 5.00 ug/L 11/17/21 00:01 1Methylene Chloride ND 5.00 ug/L 11/17/21 00:01 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 00:01 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 00:01 1StyreneND 5.00 ug/L 11/17/21 00:01 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 00:01 1TetrachloroetheneND 5.00 ug/L 11/17/21 00:01 1TolueneND Eurofins TestAmerica, Pittsburgh Page 45 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-11Client Sample ID: MW-10I Matrix: WaterDate Collected: 11/03/21 14:50 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 00:01 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 00:01 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 00:01 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 00:01 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 00:01 1Trichloroethene65.8 E 5.00 ug/L 11/17/21 00:01 1TrichlorofluoromethaneND 5.00 ug/L 11/17/21 00:01 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 00:01 1Vinyl chloride ND 5.00 ug/L 11/17/21 00:01 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 00:01 1o-Xylene ND 5.00 ug/L 11/17/21 00:01 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)116 52 -151 11/17/21 00:01 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)98 11/17/21 00:01 153-124 4-Bromofluorobenzene (Surr)74 11/17/21 00:01 149-118 Dibromofluoromethane (Surr)122 11/17/21 00:01 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL RL MDL Acetone ND H *+ *1 2000 ug/L 11/23/21 18:25 100 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 500 ug/L 11/23/21 18:25 100BenzeneND H 500 ug/L 11/23/21 18:25 100ChlorobromomethaneND H 500 ug/L 11/23/21 18:25 100DichlorobromomethaneND H 500 ug/L 11/23/21 18:25 100BromoformND H 500 ug/L 11/23/21 18:25 100BromomethaneND H 500 ug/L 11/23/21 18:25 1002-Butanone (MEK)ND H 500 ug/L 11/23/21 18:25 100Carbon disulfide ND H 500 ug/L 11/23/21 18:25 100Carbon tetrachloride ND H 500 ug/L 11/23/21 18:25 100ChlorobenzeneND H 500 ug/L 11/23/21 18:25 100ChlorodibromomethaneND H 500 ug/L 11/23/21 18:25 100ChloroethaneND H 500 ug/L 11/23/21 18:25 100ChloroformND H 500 ug/L 11/23/21 18:25 100ChloromethaneND H 500 ug/L 11/23/21 18:25 100CyclohexaneND H 500 ug/L 11/23/21 18:25 1001,2-Dibromo-3-Chloropropane ND H 500 ug/L 11/23/21 18:25 1001,2-Dichlorobenzene ND H 500 ug/L 11/23/21 18:25 1001,3-Dichlorobenzene ND H 500 ug/L 11/23/21 18:25 1001,4-Dichlorobenzene ND H 500 ug/L 11/23/21 18:25 100DichlorodifluoromethaneND H 500 ug/L 11/23/21 18:25 1001,1-Dichloroethane ND H 500 ug/L 11/23/21 18:25 1001,2-Dichloroethane ND H 500 ug/L 11/23/21 18:25 100cis-1,2-Dichloroethene 775 H 500 ug/L 11/23/21 18:25 100trans-1,2-Dichloroethene ND H 500 ug/L 11/23/21 18:25 1001,1-Dichloroethene ND H 500 ug/L 11/23/21 18:25 1001,2-Dichloropropane ND H 500 ug/L 11/23/21 18:25 100cis-1,3-Dichloropropene ND H 500 ug/L 11/23/21 18:25 100trans-1,3-Dichloropropene ND H 100000 ug/L 11/23/21 18:25 1001,4-Dioxane ND H *- 500 ug/L 11/23/21 18:25 100EthylbenzeneND H Eurofins TestAmerica, Pittsburgh Page 46 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-11Client Sample ID: MW-10I Matrix: WaterDate Collected: 11/03/21 14:50 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RADL (Continued) RL MDL 2-Hexanone ND H *+500 ug/L 11/23/21 18:25 100 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 500 ug/L 11/23/21 18:25 100IsopropylbenzeneND H 2500 ug/L 11/23/21 18:25 100Methyl acetate ND H 500 ug/L 11/23/21 18:25 100MethylcyclohexaneND H 500 ug/L 11/23/21 18:25 100Methylene Chloride ND H 500 ug/L 11/23/21 18:25 1004-Methyl-2-pentanone (MIBK)ND H 500 ug/L 11/23/21 18:25 100Methyl tert-butyl ether ND H 500 ug/L 11/23/21 18:25 100StyreneND H 500 ug/L 11/23/21 18:25 1001,1,2,2-Tetrachloroethane ND H 500 ug/L 11/23/21 18:25 100TetrachloroetheneND H 500 ug/L 11/23/21 18:25 100TolueneND H 500 ug/L 11/23/21 18:25 1001,2,3-Trichlorobenzene ND H 500 ug/L 11/23/21 18:25 1001,2,4-Trichlorobenzene ND H 500 ug/L 11/23/21 18:25 1001,1,1-Trichloroethane ND H 500 ug/L 11/23/21 18:25 1001,1,2-Trichloroethane ND H 500 ug/L 11/23/21 18:25 100TrichloroetheneND H 500 ug/L 11/23/21 18:25 100TrichlorofluoromethaneND H 500 ug/L 11/23/21 18:25 1001,1,2-Trichlorotrifluoroethane ND H 500 ug/L 11/23/21 18:25 100Vinyl chloride ND H 500 ug/L 11/23/21 18:25 100m-Xylene & p-Xylene ND H 500 ug/L 11/23/21 18:25 100o-Xylene ND H 500 ug/L 11/23/21 18:25 1001,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)124 52 -151 11/23/21 18:25 100 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)115 11/23/21 18:25 10053-124 4-Bromofluorobenzene (Surr)107 11/23/21 18:25 10049-118 Dibromofluoromethane (Surr)114 11/23/21 18:25 10060-132 Lab Sample ID: 180-129621-12Client Sample ID: MW-7I Matrix: WaterDate Collected: 11/03/21 16:05 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/11/21 19:05 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 97 50 -150 11/11/21 19:05 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 11/11/21 19:05 150-150 4-Bromofluorobenzene 102 11/11/21 19:05 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 00:27 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 00:27 1BenzeneND 5.00 ug/L 11/17/21 00:27 1ChlorobromomethaneND 5.00 ug/L 11/17/21 00:27 1DichlorobromomethaneND 5.00 ug/L 11/17/21 00:27 1BromoformND 5.00 ug/L 11/17/21 00:27 1BromomethaneND 5.00 ug/L 11/17/21 00:27 12-Butanone (MEK)ND Eurofins TestAmerica, Pittsburgh Page 47 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-12Client Sample ID: MW-7I Matrix: WaterDate Collected: 11/03/21 16:05 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Carbon disulfide ND 5.00 ug/L 11/17/21 00:27 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 00:27 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 00:27 1ChlorobenzeneND 5.00 ug/L 11/17/21 00:27 1ChlorodibromomethaneND 5.00 ug/L 11/17/21 00:27 1ChloroethaneND 5.00 ug/L 11/17/21 00:27 1ChloroformND 5.00 ug/L 11/17/21 00:27 1ChloromethaneND 5.00 ug/L 11/17/21 00:27 1CyclohexaneND 5.00 ug/L 11/17/21 00:27 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 00:27 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 00:27 11,3-Dichlorobenzene ND 5.00 ug/L 11/17/21 00:27 11,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 00:27 1DichlorodifluoromethaneND 5.00 ug/L 11/17/21 00:27 11,1-Dichloroethane ND 5.00 ug/L 11/17/21 00:27 11,2-Dichloroethane ND 5.00 ug/L 11/17/21 00:27 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 00:27 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 00:27 11,1-Dichloroethene ND 5.00 ug/L 11/17/21 00:27 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 00:27 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 00:27 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 00:27 11,4-Dioxane ND 5.00 ug/L 11/17/21 00:27 1EthylbenzeneND 5.00 ug/L 11/17/21 00:27 12-Hexanone ND 5.00 ug/L 11/17/21 00:27 1IsopropylbenzeneND 25.0 ug/L 11/17/21 00:27 1Methyl acetate ND 5.00 ug/L 11/17/21 00:27 1MethylcyclohexaneND 5.00 ug/L 11/17/21 00:27 1Methylene Chloride ND 5.00 ug/L 11/17/21 00:27 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 00:27 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 00:27 1StyreneND 5.00 ug/L 11/17/21 00:27 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 00:27 1TetrachloroetheneND 5.00 ug/L 11/17/21 00:27 1TolueneND 5.00 ug/L 11/17/21 00:27 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 00:27 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 00:27 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 00:27 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 00:27 1TrichloroetheneND 5.00 ug/L 11/17/21 00:27 1TrichlorofluoromethaneND 5.00 ug/L 11/17/21 00:27 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 00:27 1Vinyl chloride ND 5.00 ug/L 11/17/21 00:27 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 00:27 1o-Xylene ND 5.00 ug/L 11/17/21 00:27 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)124 52 -151 11/17/21 00:27 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)88 11/17/21 00:27 153-124 4-Bromofluorobenzene (Surr)70 11/17/21 00:27 149-118 Eurofins TestAmerica, Pittsburgh Page 48 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-12Client Sample ID: MW-7I Matrix: WaterDate Collected: 11/03/21 16:05 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Dibromofluoromethane (Surr)127 60 -132 11/17/21 00:27 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA RL MDL Acetone ND H *+ *1 20.0 ug/L 11/23/21 18:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/23/21 18:51 1BenzeneND H 5.00 ug/L 11/23/21 18:51 1ChlorobromomethaneND H 5.00 ug/L 11/23/21 18:51 1DichlorobromomethaneND H 5.00 ug/L 11/23/21 18:51 1BromoformND H 5.00 ug/L 11/23/21 18:51 1BromomethaneND H 5.00 ug/L 11/23/21 18:51 12-Butanone (MEK)ND H 5.00 ug/L 11/23/21 18:51 1Carbon disulfide ND H 5.00 ug/L 11/23/21 18:51 1Carbon tetrachloride ND H 5.00 ug/L 11/23/21 18:51 1ChlorobenzeneND H 5.00 ug/L 11/23/21 18:51 1ChlorodibromomethaneND H 5.00 ug/L 11/23/21 18:51 1ChloroethaneND H 5.00 ug/L 11/23/21 18:51 1ChloroformND H 5.00 ug/L 11/23/21 18:51 1ChloromethaneND H 5.00 ug/L 11/23/21 18:51 1CyclohexaneND H 5.00 ug/L 11/23/21 18:51 11,2-Dibromo-3-Chloropropane ND H 5.00 ug/L 11/23/21 18:51 11,2-Dichlorobenzene ND H 5.00 ug/L 11/23/21 18:51 11,3-Dichlorobenzene ND H 5.00 ug/L 11/23/21 18:51 11,4-Dichlorobenzene ND H 5.00 ug/L 11/23/21 18:51 1DichlorodifluoromethaneND H 5.00 ug/L 11/23/21 18:51 11,1-Dichloroethane ND H 5.00 ug/L 11/23/21 18:51 11,2-Dichloroethane ND H 5.00 ug/L 11/23/21 18:51 1cis-1,2-Dichloroethene ND H 5.00 ug/L 11/23/21 18:51 1trans-1,2-Dichloroethene ND H 5.00 ug/L 11/23/21 18:51 11,1-Dichloroethene ND H 5.00 ug/L 11/23/21 18:51 11,2-Dichloropropane ND H 5.00 ug/L 11/23/21 18:51 1cis-1,3-Dichloropropene ND H 5.00 ug/L 11/23/21 18:51 1trans-1,3-Dichloropropene ND H 1000 ug/L 11/23/21 18:51 11,4-Dioxane ND H *- 5.00 ug/L 11/23/21 18:51 1EthylbenzeneND H 5.00 ug/L 11/23/21 18:51 12-Hexanone ND H *+ 5.00 ug/L 11/23/21 18:51 1IsopropylbenzeneND H 25.0 ug/L 11/23/21 18:51 1Methyl acetate ND H 5.00 ug/L 11/23/21 18:51 1MethylcyclohexaneND H 5.00 ug/L 11/23/21 18:51 1Methylene Chloride ND H 5.00 ug/L 11/23/21 18:51 14-Methyl-2-pentanone (MIBK)ND H 5.00 ug/L 11/23/21 18:51 1Methyl tert-butyl ether ND H 5.00 ug/L 11/23/21 18:51 1StyreneND H 5.00 ug/L 11/23/21 18:51 11,1,2,2-Tetrachloroethane ND H 5.00 ug/L 11/23/21 18:51 1TetrachloroetheneND H 5.00 ug/L 11/23/21 18:51 1TolueneND H 5.00 ug/L 11/23/21 18:51 11,2,3-Trichlorobenzene ND H 5.00 ug/L 11/23/21 18:51 11,2,4-Trichlorobenzene ND H 5.00 ug/L 11/23/21 18:51 11,1,1-Trichloroethane ND H 5.00 ug/L 11/23/21 18:51 11,1,2-Trichloroethane ND H Eurofins TestAmerica, Pittsburgh Page 49 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-12Client Sample ID: MW-7I Matrix: WaterDate Collected: 11/03/21 16:05 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA (Continued) RL MDL Trichloroethene ND H 5.00 ug/L 11/23/21 18:51 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/23/21 18:51 1TrichlorofluoromethaneND H 5.00 ug/L 11/23/21 18:51 11,1,2-Trichlorotrifluoroethane ND H 5.00 ug/L 11/23/21 18:51 1Vinyl chloride ND H 5.00 ug/L 11/23/21 18:51 1m-Xylene & p-Xylene ND H 5.00 ug/L 11/23/21 18:51 1o-Xylene ND H 5.00 ug/L 11/23/21 18:51 11,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)108 52 -151 11/23/21 18:51 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)106 11/23/21 18:51 153-124 4-Bromofluorobenzene (Surr)98 11/23/21 18:51 149-118 Dibromofluoromethane (Surr)98 11/23/21 18:51 160-132 Lab Sample ID: 180-129621-13Client Sample ID: MW-7 Matrix: WaterDate Collected: 11/03/21 17:00 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/11/21 12:50 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 96 50 -150 11/11/21 12:50 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 11/11/21 12:50 150-150 4-Bromofluorobenzene 102 11/11/21 12:50 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/17/21 16:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 16:55 1BenzeneND 5.00 ug/L 11/17/21 16:55 1ChlorobromomethaneND 5.00 ug/L 11/17/21 16:55 1DichlorobromomethaneND 5.00 ug/L 11/17/21 16:55 1BromoformND 5.00 ug/L 11/17/21 16:55 1BromomethaneND 5.00 ug/L 11/17/21 16:55 12-Butanone (MEK)ND 5.00 ug/L 11/17/21 16:55 1Carbon disulfide ND 5.00 ug/L 11/17/21 16:55 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 16:55 1ChlorobenzeneND 5.00 ug/L 11/17/21 16:55 1ChlorodibromomethaneND 5.00 ug/L 11/17/21 16:55 1ChloroethaneND 5.00 ug/L 11/17/21 16:55 1ChloroformND 5.00 ug/L 11/17/21 16:55 1ChloromethaneND 5.00 ug/L 11/17/21 16:55 1CyclohexaneND 5.00 ug/L 11/17/21 16:55 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 16:55 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 16:55 11,3-Dichlorobenzene ND 5.00 ug/L 11/17/21 16:55 11,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 16:55 1DichlorodifluoromethaneND F2 5.00 ug/L 11/17/21 16:55 11,1-Dichloroethane ND 5.00 ug/L 11/17/21 16:55 11,2-Dichloroethane ND Eurofins TestAmerica, Pittsburgh Page 50 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129621-13Client Sample ID: MW-7 Matrix: WaterDate Collected: 11/03/21 17:00 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL cis-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 16:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 16:55 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 16:55 11,1-Dichloroethene ND 5.00 ug/L 11/17/21 16:55 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 16:55 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 16:55 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 16:55 11,4-Dioxane ND 5.00 ug/L 11/17/21 16:55 1EthylbenzeneND 5.00 ug/L 11/17/21 16:55 12-Hexanone ND 5.00 ug/L 11/17/21 16:55 1IsopropylbenzeneND 25.0 ug/L 11/17/21 16:55 1Methyl acetate ND 5.00 ug/L 11/17/21 16:55 1MethylcyclohexaneND 5.00 ug/L 11/17/21 16:55 1Methylene Chloride ND 5.00 ug/L 11/17/21 16:55 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/17/21 16:55 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 16:55 1StyreneND 5.00 ug/L 11/17/21 16:55 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 16:55 1TetrachloroetheneND 5.00 ug/L 11/17/21 16:55 1TolueneND 5.00 ug/L 11/17/21 16:55 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 16:55 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 16:55 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 16:55 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 16:55 1TrichloroetheneND 5.00 ug/L 11/17/21 16:55 1TrichlorofluoromethaneND F1 5.00 ug/L 11/17/21 16:55 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 16:55 1Vinyl chloride ND 5.00 ug/L 11/17/21 16:55 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 16:55 1o-Xylene ND 5.00 ug/L 11/17/21 16:55 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)119 52 -151 11/17/21 16:55 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)89 11/17/21 16:55 153-124 4-Bromofluorobenzene (Surr)69 11/17/21 16:55 149-118 Dibromofluoromethane (Surr)116 11/17/21 16:55 160-132 Lab Sample ID: 180-129623-1Client Sample ID: B-1 Matrix: WaterDate Collected: 11/02/21 13:15 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 4.75 1.00 0.300 ug/L 11/10/21 16:09 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 92 50 -150 11/10/21 16:09 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/10/21 16:09 150-150 4-Bromofluorobenzene 104 11/10/21 16:09 150-150 Eurofins TestAmerica, Pittsburgh Page 51 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-1Client Sample ID: B-1 Matrix: WaterDate Collected: 11/02/21 13:15 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/16/21 18:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 18:49 1BenzeneND 5.00 ug/L 11/16/21 18:49 1ChlorobromomethaneND 5.00 ug/L 11/16/21 18:49 1DichlorobromomethaneND 5.00 ug/L 11/16/21 18:49 1BromoformND 5.00 ug/L 11/16/21 18:49 1BromomethaneND 5.00 ug/L 11/16/21 18:49 12-Butanone (MEK)ND *1 5.00 ug/L 11/16/21 18:49 1Carbon disulfide ND 5.00 ug/L 11/16/21 18:49 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 18:49 1ChlorobenzeneND 5.00 ug/L 11/16/21 18:49 1ChlorodibromomethaneND 5.00 ug/L 11/16/21 18:49 1ChloroethaneND 5.00 ug/L 11/16/21 18:49 1ChloroformND 5.00 ug/L 11/16/21 18:49 1ChloromethaneND 5.00 ug/L 11/16/21 18:49 1CyclohexaneND 5.00 ug/L 11/16/21 18:49 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/16/21 18:49 11,2-Dichlorobenzene ND 5.00 ug/L 11/16/21 18:49 11,3-Dichlorobenzene ND 5.00 ug/L 11/16/21 18:49 11,4-Dichlorobenzene ND 5.00 ug/L 11/16/21 18:49 1DichlorodifluoromethaneND 5.00 ug/L 11/16/21 18:49 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 18:49 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 18:49 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 18:49 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 18:49 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 18:49 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 18:49 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 18:49 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 18:49 11,4-Dioxane ND 5.00 ug/L 11/16/21 18:49 1EthylbenzeneND 5.00 ug/L 11/16/21 18:49 12-Hexanone ND 5.00 ug/L 11/16/21 18:49 1IsopropylbenzeneND 25.0 ug/L 11/16/21 18:49 1Methyl acetate ND 5.00 ug/L 11/16/21 18:49 1MethylcyclohexaneND 5.00 ug/L 11/16/21 18:49 1Methylene Chloride ND 5.00 ug/L 11/16/21 18:49 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/16/21 18:49 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 18:49 1StyreneND 5.00 ug/L 11/16/21 18:49 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 18:49 1TetrachloroetheneND 5.00 ug/L 11/16/21 18:49 1TolueneND 5.00 ug/L 11/16/21 18:49 11,2,3-Trichlorobenzene ND *+ 5.00 ug/L 11/16/21 18:49 11,2,4-Trichlorobenzene ND *+ 5.00 ug/L 11/16/21 18:49 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 18:49 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 18:49 1TrichloroetheneND 5.00 ug/L 11/16/21 18:49 1TrichlorofluoromethaneND 5.00 ug/L 11/16/21 18:49 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 18:49 1Vinyl chloride ND Eurofins TestAmerica, Pittsburgh Page 52 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-1Client Sample ID: B-1 Matrix: WaterDate Collected: 11/02/21 13:15 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 18:49 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 18:49 1o-Xylene ND 5.00 ug/L 11/16/21 18:49 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)97 52 -151 11/16/21 18:49 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)92 11/16/21 18:49 153-124 4-Bromofluorobenzene (Surr)98 11/16/21 18:49 149-118 Dibromofluoromethane (Surr)102 11/16/21 18:49 160-132 Lab Sample ID: 180-129623-2Client Sample ID: B-3 Matrix: WaterDate Collected: 11/02/21 12:10 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/10/21 19:05 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 93 50 -150 11/10/21 19:05 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 11/10/21 19:05 150-150 4-Bromofluorobenzene 104 11/10/21 19:05 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/16/21 19:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 19:14 1BenzeneND 5.00 ug/L 11/16/21 19:14 1ChlorobromomethaneND 5.00 ug/L 11/16/21 19:14 1DichlorobromomethaneND 5.00 ug/L 11/16/21 19:14 1BromoformND 5.00 ug/L 11/16/21 19:14 1BromomethaneND 5.00 ug/L 11/16/21 19:14 12-Butanone (MEK)ND *1 5.00 ug/L 11/16/21 19:14 1Carbon disulfide ND 5.00 ug/L 11/16/21 19:14 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 19:14 1ChlorobenzeneND 5.00 ug/L 11/16/21 19:14 1ChlorodibromomethaneND 5.00 ug/L 11/16/21 19:14 1ChloroethaneND 5.00 ug/L 11/16/21 19:14 1ChloroformND 5.00 ug/L 11/16/21 19:14 1ChloromethaneND 5.00 ug/L 11/16/21 19:14 1CyclohexaneND 5.00 ug/L 11/16/21 19:14 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/16/21 19:14 11,2-Dichlorobenzene ND 5.00 ug/L 11/16/21 19:14 11,3-Dichlorobenzene ND 5.00 ug/L 11/16/21 19:14 11,4-Dichlorobenzene ND 5.00 ug/L 11/16/21 19:14 1DichlorodifluoromethaneND 5.00 ug/L 11/16/21 19:14 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 19:14 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 19:14 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 19:14 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 19:14 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 19:14 11,2-Dichloropropane ND Eurofins TestAmerica, Pittsburgh Page 53 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-2Client Sample ID: B-3 Matrix: WaterDate Collected: 11/02/21 12:10 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 19:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 19:14 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 19:14 11,4-Dioxane ND 5.00 ug/L 11/16/21 19:14 1EthylbenzeneND 5.00 ug/L 11/16/21 19:14 12-Hexanone ND 5.00 ug/L 11/16/21 19:14 1IsopropylbenzeneND 25.0 ug/L 11/16/21 19:14 1Methyl acetate ND 5.00 ug/L 11/16/21 19:14 1MethylcyclohexaneND 5.00 ug/L 11/16/21 19:14 1Methylene Chloride ND 5.00 ug/L 11/16/21 19:14 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/16/21 19:14 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 19:14 1StyreneND 5.00 ug/L 11/16/21 19:14 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 19:14 1TetrachloroetheneND 5.00 ug/L 11/16/21 19:14 1TolueneND 5.00 ug/L 11/16/21 19:14 11,2,3-Trichlorobenzene ND *+ 5.00 ug/L 11/16/21 19:14 11,2,4-Trichlorobenzene ND *+ 5.00 ug/L 11/16/21 19:14 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 19:14 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 19:14 1TrichloroetheneND 5.00 ug/L 11/16/21 19:14 1TrichlorofluoromethaneND 5.00 ug/L 11/16/21 19:14 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 19:14 1Vinyl chloride ND 5.00 ug/L 11/16/21 19:14 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 19:14 1o-Xylene ND 5.00 ug/L 11/16/21 19:14 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)99 52 -151 11/16/21 19:14 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)93 11/16/21 19:14 153-124 4-Bromofluorobenzene (Surr)98 11/16/21 19:14 149-118 Dibromofluoromethane (Surr)99 11/16/21 19:14 160-132 Lab Sample ID: 180-129623-3Client Sample ID: MW-5 Matrix: WaterDate Collected: 11/02/21 14:00 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/10/21 19:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 93 50 -150 11/10/21 19:30 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/10/21 19:30 150-150 4-Bromofluorobenzene 104 11/10/21 19:30 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/16/21 19:39 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 19:39 1BenzeneND 5.00 ug/L 11/16/21 19:39 1ChlorobromomethaneND Eurofins TestAmerica, Pittsburgh Page 54 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-3Client Sample ID: MW-5 Matrix: WaterDate Collected: 11/02/21 14:00 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Dichlorobromomethane ND 5.00 ug/L 11/16/21 19:39 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 19:39 1BromoformND 5.00 ug/L 11/16/21 19:39 1BromomethaneND 5.00 ug/L 11/16/21 19:39 12-Butanone (MEK)ND *1 5.00 ug/L 11/16/21 19:39 1Carbon disulfide ND 5.00 ug/L 11/16/21 19:39 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 19:39 1ChlorobenzeneND 5.00 ug/L 11/16/21 19:39 1ChlorodibromomethaneND 5.00 ug/L 11/16/21 19:39 1ChloroethaneND 5.00 ug/L 11/16/21 19:39 1ChloroformND 5.00 ug/L 11/16/21 19:39 1ChloromethaneND 5.00 ug/L 11/16/21 19:39 1CyclohexaneND 5.00 ug/L 11/16/21 19:39 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/16/21 19:39 11,2-Dichlorobenzene ND 5.00 ug/L 11/16/21 19:39 11,3-Dichlorobenzene ND 5.00 ug/L 11/16/21 19:39 11,4-Dichlorobenzene ND 5.00 ug/L 11/16/21 19:39 1DichlorodifluoromethaneND 5.00 ug/L 11/16/21 19:39 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 19:39 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 19:39 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 19:39 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 19:39 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 19:39 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 19:39 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 19:39 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 19:39 11,4-Dioxane ND 5.00 ug/L 11/16/21 19:39 1EthylbenzeneND 5.00 ug/L 11/16/21 19:39 12-Hexanone ND 5.00 ug/L 11/16/21 19:39 1IsopropylbenzeneND 25.0 ug/L 11/16/21 19:39 1Methyl acetate ND 5.00 ug/L 11/16/21 19:39 1MethylcyclohexaneND 5.00 ug/L 11/16/21 19:39 1Methylene Chloride ND 5.00 ug/L 11/16/21 19:39 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/16/21 19:39 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 19:39 1StyreneND 5.00 ug/L 11/16/21 19:39 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 19:39 1TetrachloroetheneND 5.00 ug/L 11/16/21 19:39 1TolueneND 5.00 ug/L 11/16/21 19:39 11,2,3-Trichlorobenzene ND *+ 5.00 ug/L 11/16/21 19:39 11,2,4-Trichlorobenzene ND *+ 5.00 ug/L 11/16/21 19:39 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 19:39 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 19:39 1TrichloroetheneND 5.00 ug/L 11/16/21 19:39 1TrichlorofluoromethaneND 5.00 ug/L 11/16/21 19:39 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 19:39 1Vinyl chloride ND 5.00 ug/L 11/16/21 19:39 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 19:39 1o-Xylene ND 5.00 ug/L 11/16/21 19:39 11,2-Dibromoethane ND Eurofins TestAmerica, Pittsburgh Page 55 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-3Client Sample ID: MW-5 Matrix: WaterDate Collected: 11/02/21 14:00 Date Received: 11/05/21 10:00 1,2-Dichloroethane-d4 (Surr)98 52 -151 11/16/21 19:39 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)86 11/16/21 19:39 153-124 4-Bromofluorobenzene (Surr)96 11/16/21 19:39 149-118 Dibromofluoromethane (Surr)97 11/16/21 19:39 160-132 Lab Sample ID: 180-129623-4Client Sample ID: MW-5I Matrix: WaterDate Collected: 11/02/21 14:40 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/10/21 19:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 93 50 -150 11/10/21 19:55 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 11/10/21 19:55 150-150 4-Bromofluorobenzene 103 11/10/21 19:55 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/16/21 20:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 20:04 1BenzeneND 5.00 ug/L 11/16/21 20:04 1ChlorobromomethaneND 5.00 ug/L 11/16/21 20:04 1DichlorobromomethaneND 5.00 ug/L 11/16/21 20:04 1BromoformND 5.00 ug/L 11/16/21 20:04 1BromomethaneND 5.00 ug/L 11/16/21 20:04 12-Butanone (MEK)ND *1 5.00 ug/L 11/16/21 20:04 1Carbon disulfide ND 5.00 ug/L 11/16/21 20:04 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 20:04 1ChlorobenzeneND 5.00 ug/L 11/16/21 20:04 1ChlorodibromomethaneND 5.00 ug/L 11/16/21 20:04 1ChloroethaneND 5.00 ug/L 11/16/21 20:04 1ChloroformND 5.00 ug/L 11/16/21 20:04 1ChloromethaneND 5.00 ug/L 11/16/21 20:04 1CyclohexaneND 5.00 ug/L 11/16/21 20:04 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/16/21 20:04 11,2-Dichlorobenzene ND 5.00 ug/L 11/16/21 20:04 11,3-Dichlorobenzene ND 5.00 ug/L 11/16/21 20:04 11,4-Dichlorobenzene ND 5.00 ug/L 11/16/21 20:04 1DichlorodifluoromethaneND 5.00 ug/L 11/16/21 20:04 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 20:04 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 20:04 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 20:04 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 20:04 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 20:04 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 20:04 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 20:04 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 20:04 11,4-Dioxane ND 5.00 ug/L 11/16/21 20:04 1EthylbenzeneND 5.00 ug/L 11/16/21 20:04 12-Hexanone ND Eurofins TestAmerica, Pittsburgh Page 56 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-4Client Sample ID: MW-5I Matrix: WaterDate Collected: 11/02/21 14:40 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Isopropylbenzene ND 5.00 ug/L 11/16/21 20:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 25.0 ug/L 11/16/21 20:04 1Methyl acetate ND 5.00 ug/L 11/16/21 20:04 1MethylcyclohexaneND 5.00 ug/L 11/16/21 20:04 1Methylene Chloride ND 5.00 ug/L 11/16/21 20:04 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/16/21 20:04 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 20:04 1StyreneND 5.00 ug/L 11/16/21 20:04 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 20:04 1TetrachloroetheneND 5.00 ug/L 11/16/21 20:04 1TolueneND 5.00 ug/L 11/16/21 20:04 11,2,3-Trichlorobenzene ND *+ 5.00 ug/L 11/16/21 20:04 11,2,4-Trichlorobenzene ND *+ 5.00 ug/L 11/16/21 20:04 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 20:04 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 20:04 1TrichloroetheneND 5.00 ug/L 11/16/21 20:04 1TrichlorofluoromethaneND 5.00 ug/L 11/16/21 20:04 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 20:04 1Vinyl chloride ND 5.00 ug/L 11/16/21 20:04 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 20:04 1o-Xylene ND 5.00 ug/L 11/16/21 20:04 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)104 52 -151 11/16/21 20:04 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)88 11/16/21 20:04 153-124 4-Bromofluorobenzene (Surr)103 11/16/21 20:04 149-118 Dibromofluoromethane (Surr)99 11/16/21 20:04 160-132 Lab Sample ID: 180-129623-5Client Sample ID: MW-3 Matrix: WaterDate Collected: 11/02/21 12:45 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/10/21 20:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 94 50 -150 11/10/21 20:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/10/21 20:20 150-150 4-Bromofluorobenzene 104 11/10/21 20:20 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/16/21 20:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 20:30 1BenzeneND 5.00 ug/L 11/16/21 20:30 1ChlorobromomethaneND 5.00 ug/L 11/16/21 20:30 1DichlorobromomethaneND 5.00 ug/L 11/16/21 20:30 1BromoformND 5.00 ug/L 11/16/21 20:30 1BromomethaneND 5.00 ug/L 11/16/21 20:30 12-Butanone (MEK)ND *1 5.00 ug/L 11/16/21 20:30 1Carbon disulfide ND Eurofins TestAmerica, Pittsburgh Page 57 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-5Client Sample ID: MW-3 Matrix: WaterDate Collected: 11/02/21 12:45 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Carbon tetrachloride ND 5.00 ug/L 11/16/21 20:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 20:30 1ChlorobenzeneND 5.00 ug/L 11/16/21 20:30 1ChlorodibromomethaneND 5.00 ug/L 11/16/21 20:30 1ChloroethaneND 5.00 ug/L 11/16/21 20:30 1ChloroformND 5.00 ug/L 11/16/21 20:30 1ChloromethaneND 5.00 ug/L 11/16/21 20:30 1CyclohexaneND 5.00 ug/L 11/16/21 20:30 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/16/21 20:30 11,2-Dichlorobenzene ND 5.00 ug/L 11/16/21 20:30 11,3-Dichlorobenzene ND 5.00 ug/L 11/16/21 20:30 11,4-Dichlorobenzene ND 5.00 ug/L 11/16/21 20:30 1DichlorodifluoromethaneND 5.00 ug/L 11/16/21 20:30 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 20:30 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 20:30 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 20:30 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 20:30 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 20:30 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 20:30 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 20:30 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 20:30 11,4-Dioxane ND 5.00 ug/L 11/16/21 20:30 1EthylbenzeneND 5.00 ug/L 11/16/21 20:30 12-Hexanone ND 5.00 ug/L 11/16/21 20:30 1IsopropylbenzeneND 25.0 ug/L 11/16/21 20:30 1Methyl acetate ND 5.00 ug/L 11/16/21 20:30 1MethylcyclohexaneND 5.00 ug/L 11/16/21 20:30 1Methylene Chloride ND 5.00 ug/L 11/16/21 20:30 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/16/21 20:30 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 20:30 1StyreneND 5.00 ug/L 11/16/21 20:30 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 20:30 1TetrachloroetheneND 5.00 ug/L 11/16/21 20:30 1TolueneND 5.00 ug/L 11/16/21 20:30 11,2,3-Trichlorobenzene ND *+ 5.00 ug/L 11/16/21 20:30 11,2,4-Trichlorobenzene ND *+ 5.00 ug/L 11/16/21 20:30 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 20:30 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 20:30 1TrichloroetheneND 5.00 ug/L 11/16/21 20:30 1TrichlorofluoromethaneND 5.00 ug/L 11/16/21 20:30 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 20:30 1Vinyl chloride ND 5.00 ug/L 11/16/21 20:30 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 20:30 1o-Xylene ND 5.00 ug/L 11/16/21 20:30 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)84 52 -151 11/16/21 20:30 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)78 11/16/21 20:30 153-124 4-Bromofluorobenzene (Surr)87 11/16/21 20:30 149-118 Dibromofluoromethane (Surr)86 11/16/21 20:30 160-132 Eurofins TestAmerica, Pittsburgh Page 58 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-6Client Sample ID: MW-3I Matrix: WaterDate Collected: 11/02/21 12:05 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/10/21 20:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 94 50 -150 11/10/21 20:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/10/21 20:45 150-150 4-Bromofluorobenzene 104 11/10/21 20:45 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/16/21 20:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 20:55 1BenzeneND 5.00 ug/L 11/16/21 20:55 1ChlorobromomethaneND 5.00 ug/L 11/16/21 20:55 1DichlorobromomethaneND 5.00 ug/L 11/16/21 20:55 1BromoformND 5.00 ug/L 11/16/21 20:55 1BromomethaneND 5.00 ug/L 11/16/21 20:55 12-Butanone (MEK)ND *1 5.00 ug/L 11/16/21 20:55 1Carbon disulfide ND 5.00 ug/L 11/16/21 20:55 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 20:55 1ChlorobenzeneND 5.00 ug/L 11/16/21 20:55 1ChlorodibromomethaneND 5.00 ug/L 11/16/21 20:55 1ChloroethaneND 5.00 ug/L 11/16/21 20:55 1ChloroformND 5.00 ug/L 11/16/21 20:55 1ChloromethaneND 5.00 ug/L 11/16/21 20:55 1CyclohexaneND 5.00 ug/L 11/16/21 20:55 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/16/21 20:55 11,2-Dichlorobenzene ND 5.00 ug/L 11/16/21 20:55 11,3-Dichlorobenzene ND 5.00 ug/L 11/16/21 20:55 11,4-Dichlorobenzene ND 5.00 ug/L 11/16/21 20:55 1DichlorodifluoromethaneND 5.00 ug/L 11/16/21 20:55 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 20:55 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 20:55 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 20:55 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 20:55 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 20:55 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 20:55 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 20:55 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 20:55 11,4-Dioxane ND 5.00 ug/L 11/16/21 20:55 1EthylbenzeneND 5.00 ug/L 11/16/21 20:55 12-Hexanone ND 5.00 ug/L 11/16/21 20:55 1IsopropylbenzeneND 25.0 ug/L 11/16/21 20:55 1Methyl acetate ND 5.00 ug/L 11/16/21 20:55 1MethylcyclohexaneND 5.00 ug/L 11/16/21 20:55 1Methylene Chloride ND 5.00 ug/L 11/16/21 20:55 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/16/21 20:55 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 20:55 1StyreneND 5.00 ug/L 11/16/21 20:55 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 20:55 1TetrachloroetheneND 5.00 ug/L 11/16/21 20:55 1TolueneND Eurofins TestAmerica, Pittsburgh Page 59 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-6Client Sample ID: MW-3I Matrix: WaterDate Collected: 11/02/21 12:05 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2,3-Trichlorobenzene ND *+5.00 ug/L 11/16/21 20:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 20:55 11,2,4-Trichlorobenzene ND *+ 5.00 ug/L 11/16/21 20:55 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 20:55 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 20:55 1TrichloroetheneND 5.00 ug/L 11/16/21 20:55 1TrichlorofluoromethaneND 5.00 ug/L 11/16/21 20:55 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 20:55 1Vinyl chloride ND 5.00 ug/L 11/16/21 20:55 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 20:55 1o-Xylene ND 5.00 ug/L 11/16/21 20:55 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)109 52 -151 11/16/21 20:55 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)78 11/16/21 20:55 153-124 4-Bromofluorobenzene (Surr)105 11/16/21 20:55 149-118 Dibromofluoromethane (Surr)107 11/16/21 20:55 160-132 Lab Sample ID: 180-129623-7Client Sample ID: MW-2 Matrix: WaterDate Collected: 11/02/21 13:50 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/10/21 21:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 95 50 -150 11/10/21 21:10 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/10/21 21:10 150-150 4-Bromofluorobenzene 104 11/10/21 21:10 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone 22.6 20.0 ug/L 11/16/21 18:33 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 18:33 1BenzeneND 5.00 ug/L 11/16/21 18:33 1ChlorobromomethaneND 5.00 ug/L 11/16/21 18:33 1DichlorobromomethaneND 5.00 ug/L 11/16/21 18:33 1BromoformND 5.00 ug/L 11/16/21 18:33 1BromomethaneND 5.00 ug/L 11/16/21 18:33 12-Butanone (MEK)ND 5.00 ug/L 11/16/21 18:33 1Carbon disulfide ND 5.00 ug/L 11/16/21 18:33 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 18:33 1ChlorobenzeneND 5.00 ug/L 11/16/21 18:33 1ChlorodibromomethaneND 5.00 ug/L 11/16/21 18:33 1ChloroethaneND 5.00 ug/L 11/16/21 18:33 1ChloroformND 5.00 ug/L 11/16/21 18:33 1ChloromethaneND 5.00 ug/L 11/16/21 18:33 1CyclohexaneND 5.00 ug/L 11/16/21 18:33 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/16/21 18:33 11,2-Dichlorobenzene ND 5.00 ug/L 11/16/21 18:33 11,3-Dichlorobenzene ND Eurofins TestAmerica, Pittsburgh Page 60 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-7Client Sample ID: MW-2 Matrix: WaterDate Collected: 11/02/21 13:50 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,4-Dichlorobenzene ND 5.00 ug/L 11/16/21 18:33 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 18:33 1DichlorodifluoromethaneND 5.00 ug/L 11/16/21 18:33 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 18:33 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 18:33 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 18:33 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 18:33 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 18:33 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 18:33 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 18:33 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 18:33 11,4-Dioxane ND 5.00 ug/L 11/16/21 18:33 1EthylbenzeneND 5.00 ug/L 11/16/21 18:33 12-Hexanone ND 5.00 ug/L 11/16/21 18:33 1IsopropylbenzeneND 25.0 ug/L 11/16/21 18:33 1Methyl acetate ND 5.00 ug/L 11/16/21 18:33 1MethylcyclohexaneND 5.00 ug/L 11/16/21 18:33 1Methylene Chloride ND 5.00 ug/L 11/16/21 18:33 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/16/21 18:33 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 18:33 1StyreneND 5.00 ug/L 11/16/21 18:33 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 18:33 1TetrachloroetheneND 5.00 ug/L 11/16/21 18:33 1TolueneND 5.00 ug/L 11/16/21 18:33 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/16/21 18:33 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/16/21 18:33 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 18:33 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 18:33 1TrichloroetheneND 5.00 ug/L 11/16/21 18:33 1TrichlorofluoromethaneND 5.00 ug/L 11/16/21 18:33 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 18:33 1Vinyl chloride ND 5.00 ug/L 11/16/21 18:33 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 18:33 1o-Xylene ND 5.00 ug/L 11/16/21 18:33 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)146 52 -151 11/16/21 18:33 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)113 11/16/21 18:33 153-124 4-Bromofluorobenzene (Surr)92 11/16/21 18:33 149-118 Dibromofluoromethane (Surr)145 S1+11/16/21 18:33 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA RL MDL Acetone ND H 20.0 ug/L 11/17/21 13:53 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 13:53 1BenzeneND H 5.00 ug/L 11/17/21 13:53 1ChlorobromomethaneND H 5.00 ug/L 11/17/21 13:53 1DichlorobromomethaneND H 5.00 ug/L 11/17/21 13:53 1BromoformND H 5.00 ug/L 11/17/21 13:53 1BromomethaneND H 5.00 ug/L 11/17/21 13:53 12-Butanone (MEK)ND H Eurofins TestAmerica, Pittsburgh Page 61 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-7Client Sample ID: MW-2 Matrix: WaterDate Collected: 11/02/21 13:50 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA (Continued) RL MDL Carbon disulfide ND H 5.00 ug/L 11/17/21 13:53 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 13:53 1Carbon tetrachloride ND H 5.00 ug/L 11/17/21 13:53 1ChlorobenzeneND H 5.00 ug/L 11/17/21 13:53 1ChlorodibromomethaneND H 5.00 ug/L 11/17/21 13:53 1ChloroethaneND H 5.00 ug/L 11/17/21 13:53 1ChloroformND H 5.00 ug/L 11/17/21 13:53 1ChloromethaneND H 5.00 ug/L 11/17/21 13:53 1CyclohexaneND H 5.00 ug/L 11/17/21 13:53 11,2-Dibromo-3-Chloropropane ND H 5.00 ug/L 11/17/21 13:53 11,2-Dichlorobenzene ND H 5.00 ug/L 11/17/21 13:53 11,3-Dichlorobenzene ND H 5.00 ug/L 11/17/21 13:53 11,4-Dichlorobenzene ND H 5.00 ug/L 11/17/21 13:53 1DichlorodifluoromethaneND H 5.00 ug/L 11/17/21 13:53 11,1-Dichloroethane ND H 5.00 ug/L 11/17/21 13:53 11,2-Dichloroethane ND H 5.00 ug/L 11/17/21 13:53 1cis-1,2-Dichloroethene ND H 5.00 ug/L 11/17/21 13:53 1trans-1,2-Dichloroethene ND H 5.00 ug/L 11/17/21 13:53 11,1-Dichloroethene ND H 5.00 ug/L 11/17/21 13:53 11,2-Dichloropropane ND H 5.00 ug/L 11/17/21 13:53 1cis-1,3-Dichloropropene ND H 5.00 ug/L 11/17/21 13:53 1trans-1,3-Dichloropropene ND H 1000 ug/L 11/17/21 13:53 11,4-Dioxane ND H 5.00 ug/L 11/17/21 13:53 1EthylbenzeneND H 5.00 ug/L 11/17/21 13:53 12-Hexanone ND H 5.00 ug/L 11/17/21 13:53 1IsopropylbenzeneND H 25.0 ug/L 11/17/21 13:53 1Methyl acetate ND H 5.00 ug/L 11/17/21 13:53 1MethylcyclohexaneND H 5.00 ug/L 11/17/21 13:53 1Methylene Chloride ND H 5.00 ug/L 11/17/21 13:53 14-Methyl-2-pentanone (MIBK)ND H 5.00 ug/L 11/17/21 13:53 1Methyl tert-butyl ether ND H 5.00 ug/L 11/17/21 13:53 1StyreneND H 5.00 ug/L 11/17/21 13:53 11,1,2,2-Tetrachloroethane ND H 5.00 ug/L 11/17/21 13:53 1TetrachloroetheneND H 5.00 ug/L 11/17/21 13:53 1TolueneND H 5.00 ug/L 11/17/21 13:53 11,2,3-Trichlorobenzene ND H 5.00 ug/L 11/17/21 13:53 11,2,4-Trichlorobenzene ND H 5.00 ug/L 11/17/21 13:53 11,1,1-Trichloroethane ND H 5.00 ug/L 11/17/21 13:53 11,1,2-Trichloroethane ND H 5.00 ug/L 11/17/21 13:53 1TrichloroetheneND H 5.00 ug/L 11/17/21 13:53 1TrichlorofluoromethaneND H 5.00 ug/L 11/17/21 13:53 11,1,2-Trichlorotrifluoroethane ND H 5.00 ug/L 11/17/21 13:53 1Vinyl chloride ND H 5.00 ug/L 11/17/21 13:53 1m-Xylene & p-Xylene ND H 5.00 ug/L 11/17/21 13:53 1o-Xylene ND H 5.00 ug/L 11/17/21 13:53 11,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)116 52 -151 11/17/21 13:53 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)97 11/17/21 13:53 153-124 4-Bromofluorobenzene (Surr)77 11/17/21 13:53 149-118 Eurofins TestAmerica, Pittsburgh Page 62 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-7Client Sample ID: MW-2 Matrix: WaterDate Collected: 11/02/21 13:50 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA (Continued) Dibromofluoromethane (Surr)115 60 -132 11/17/21 13:53 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 180-129623-8Client Sample ID: MW-11I Matrix: WaterDate Collected: 11/02/21 14:35 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/10/21 21:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 95 50 -150 11/10/21 21:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/10/21 21:35 150-150 4-Bromofluorobenzene 103 11/10/21 21:35 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/16/21 18:58 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 18:58 1BenzeneND 5.00 ug/L 11/16/21 18:58 1ChlorobromomethaneND 5.00 ug/L 11/16/21 18:58 1DichlorobromomethaneND 5.00 ug/L 11/16/21 18:58 1BromoformND 5.00 ug/L 11/16/21 18:58 1BromomethaneND 5.00 ug/L 11/16/21 18:58 12-Butanone (MEK)ND 5.00 ug/L 11/16/21 18:58 1Carbon disulfide ND 5.00 ug/L 11/16/21 18:58 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 18:58 1ChlorobenzeneND 5.00 ug/L 11/16/21 18:58 1ChlorodibromomethaneND 5.00 ug/L 11/16/21 18:58 1ChloroethaneND 5.00 ug/L 11/16/21 18:58 1ChloroformND 5.00 ug/L 11/16/21 18:58 1ChloromethaneND 5.00 ug/L 11/16/21 18:58 1CyclohexaneND 5.00 ug/L 11/16/21 18:58 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/16/21 18:58 11,2-Dichlorobenzene ND 5.00 ug/L 11/16/21 18:58 11,3-Dichlorobenzene ND 5.00 ug/L 11/16/21 18:58 11,4-Dichlorobenzene ND 5.00 ug/L 11/16/21 18:58 1DichlorodifluoromethaneND 5.00 ug/L 11/16/21 18:58 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 18:58 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 18:58 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 18:58 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 18:58 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 18:58 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 18:58 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 18:58 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 18:58 11,4-Dioxane ND 5.00 ug/L 11/16/21 18:58 1EthylbenzeneND 5.00 ug/L 11/16/21 18:58 12-Hexanone ND 5.00 ug/L 11/16/21 18:58 1IsopropylbenzeneND 25.0 ug/L 11/16/21 18:58 1Methyl acetate ND Eurofins TestAmerica, Pittsburgh Page 63 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-8Client Sample ID: MW-11I Matrix: WaterDate Collected: 11/02/21 14:35 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Methylcyclohexane ND 5.00 ug/L 11/16/21 18:58 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 18:58 1Methylene Chloride ND 5.00 ug/L 11/16/21 18:58 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/16/21 18:58 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 18:58 1StyreneND 5.00 ug/L 11/16/21 18:58 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 18:58 1TetrachloroetheneND 5.00 ug/L 11/16/21 18:58 1TolueneND 5.00 ug/L 11/16/21 18:58 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/16/21 18:58 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/16/21 18:58 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 18:58 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 18:58 1TrichloroetheneND 5.00 ug/L 11/16/21 18:58 1TrichlorofluoromethaneND 5.00 ug/L 11/16/21 18:58 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 18:58 1Vinyl chloride ND 5.00 ug/L 11/16/21 18:58 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 18:58 1o-Xylene ND 5.00 ug/L 11/16/21 18:58 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)147 52 -151 11/16/21 18:58 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 11/16/21 18:58 153-124 4-Bromofluorobenzene (Surr)84 11/16/21 18:58 149-118 Dibromofluoromethane (Surr)139 S1+11/16/21 18:58 160-132 Lab Sample ID: 180-129623-9Client Sample ID: MW-11 Matrix: WaterDate Collected: 11/02/21 15:15 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/10/21 22:00 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 96 50 -150 11/10/21 22:00 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/10/21 22:00 150-150 4-Bromofluorobenzene 104 11/10/21 22:00 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/16/21 19:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 19:22 1BenzeneND 5.00 ug/L 11/16/21 19:22 1ChlorobromomethaneND 5.00 ug/L 11/16/21 19:22 1DichlorobromomethaneND 5.00 ug/L 11/16/21 19:22 1BromoformND 5.00 ug/L 11/16/21 19:22 1BromomethaneND 5.00 ug/L 11/16/21 19:22 12-Butanone (MEK)ND 5.00 ug/L 11/16/21 19:22 1Carbon disulfide ND 5.00 ug/L 11/16/21 19:22 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 19:22 1ChlorobenzeneND Eurofins TestAmerica, Pittsburgh Page 64 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-9Client Sample ID: MW-11 Matrix: WaterDate Collected: 11/02/21 15:15 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Chlorodibromomethane ND 5.00 ug/L 11/16/21 19:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 19:22 1ChloroethaneND 5.00 ug/L 11/16/21 19:22 1ChloroformND 5.00 ug/L 11/16/21 19:22 1ChloromethaneND 5.00 ug/L 11/16/21 19:22 1CyclohexaneND 5.00 ug/L 11/16/21 19:22 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/16/21 19:22 11,2-Dichlorobenzene ND 5.00 ug/L 11/16/21 19:22 11,3-Dichlorobenzene ND 5.00 ug/L 11/16/21 19:22 11,4-Dichlorobenzene ND 5.00 ug/L 11/16/21 19:22 1DichlorodifluoromethaneND 5.00 ug/L 11/16/21 19:22 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 19:22 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 19:22 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 19:22 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 19:22 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 19:22 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 19:22 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 19:22 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 19:22 11,4-Dioxane ND 5.00 ug/L 11/16/21 19:22 1EthylbenzeneND 5.00 ug/L 11/16/21 19:22 12-Hexanone ND 5.00 ug/L 11/16/21 19:22 1IsopropylbenzeneND 25.0 ug/L 11/16/21 19:22 1Methyl acetate ND 5.00 ug/L 11/16/21 19:22 1MethylcyclohexaneND 5.00 ug/L 11/16/21 19:22 1Methylene Chloride ND 5.00 ug/L 11/16/21 19:22 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/16/21 19:22 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 19:22 1StyreneND 5.00 ug/L 11/16/21 19:22 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 19:22 1TetrachloroetheneND 5.00 ug/L 11/16/21 19:22 1TolueneND 5.00 ug/L 11/16/21 19:22 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/16/21 19:22 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/16/21 19:22 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 19:22 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 19:22 1TrichloroetheneND 5.00 ug/L 11/16/21 19:22 1TrichlorofluoromethaneND 5.00 ug/L 11/16/21 19:22 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 19:22 1Vinyl chloride ND 5.00 ug/L 11/16/21 19:22 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 19:22 1o-Xylene ND 5.00 ug/L 11/16/21 19:22 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)150 52 -151 11/16/21 19:22 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/16/21 19:22 153-124 4-Bromofluorobenzene (Surr)83 11/16/21 19:22 149-118 Dibromofluoromethane (Surr)148 S1+11/16/21 19:22 160-132 Eurofins TestAmerica, Pittsburgh Page 65 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-10Client Sample ID: MW-2a Matrix: WaterDate Collected: 11/02/21 16:40 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/10/21 22:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 94 50 -150 11/10/21 22:25 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/10/21 22:25 150-150 4-Bromofluorobenzene 103 11/10/21 22:25 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/16/21 19:47 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 19:47 1BenzeneND 5.00 ug/L 11/16/21 19:47 1ChlorobromomethaneND 5.00 ug/L 11/16/21 19:47 1DichlorobromomethaneND 5.00 ug/L 11/16/21 19:47 1BromoformND 5.00 ug/L 11/16/21 19:47 1BromomethaneND 5.00 ug/L 11/16/21 19:47 12-Butanone (MEK)ND 5.00 ug/L 11/16/21 19:47 1Carbon disulfide ND 5.00 ug/L 11/16/21 19:47 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 19:47 1ChlorobenzeneND 5.00 ug/L 11/16/21 19:47 1ChlorodibromomethaneND 5.00 ug/L 11/16/21 19:47 1ChloroethaneND 5.00 ug/L 11/16/21 19:47 1ChloroformND 5.00 ug/L 11/16/21 19:47 1ChloromethaneND 5.00 ug/L 11/16/21 19:47 1CyclohexaneND 5.00 ug/L 11/16/21 19:47 11,2-Dibromo-3-Chloropropane ND *3 5.00 ug/L 11/16/21 19:47 11,2-Dichlorobenzene ND *3 5.00 ug/L 11/16/21 19:47 11,3-Dichlorobenzene ND *3 5.00 ug/L 11/16/21 19:47 11,4-Dichlorobenzene ND *3 5.00 ug/L 11/16/21 19:47 1DichlorodifluoromethaneND 5.00 ug/L 11/16/21 19:47 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 19:47 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 19:47 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 19:47 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 19:47 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 19:47 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 19:47 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 19:47 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 19:47 11,4-Dioxane ND 5.00 ug/L 11/16/21 19:47 1EthylbenzeneND 5.00 ug/L 11/16/21 19:47 12-Hexanone ND 5.00 ug/L 11/16/21 19:47 1IsopropylbenzeneND 25.0 ug/L 11/16/21 19:47 1Methyl acetate ND 5.00 ug/L 11/16/21 19:47 1MethylcyclohexaneND 5.00 ug/L 11/16/21 19:47 1Methylene Chloride ND 5.00 ug/L 11/16/21 19:47 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/16/21 19:47 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 19:47 1StyreneND 5.00 ug/L 11/16/21 19:47 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 19:47 1TetrachloroetheneND 5.00 ug/L 11/16/21 19:47 1TolueneND Eurofins TestAmerica, Pittsburgh Page 66 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-10Client Sample ID: MW-2a Matrix: WaterDate Collected: 11/02/21 16:40 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2,3-Trichlorobenzene ND *3 5.00 ug/L 11/16/21 19:47 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 19:47 11,2,4-Trichlorobenzene ND *3 5.00 ug/L 11/16/21 19:47 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 19:47 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 19:47 1TrichloroetheneND 5.00 ug/L 11/16/21 19:47 1TrichlorofluoromethaneND 5.00 ug/L 11/16/21 19:47 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 19:47 1Vinyl chloride ND 5.00 ug/L 11/16/21 19:47 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 19:47 1o-Xylene ND 5.00 ug/L 11/16/21 19:47 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)150 52 -151 11/16/21 19:47 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)117 11/16/21 19:47 153-124 4-Bromofluorobenzene (Surr)82 11/16/21 19:47 149-118 Dibromofluoromethane (Surr)154 S1+11/16/21 19:47 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA RL MDL Acetone ND H 20.0 ug/L 11/17/21 14:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 14:19 1BenzeneND H 5.00 ug/L 11/17/21 14:19 1ChlorobromomethaneND H 5.00 ug/L 11/17/21 14:19 1DichlorobromomethaneND H 5.00 ug/L 11/17/21 14:19 1BromoformND H 5.00 ug/L 11/17/21 14:19 1BromomethaneND H 5.00 ug/L 11/17/21 14:19 12-Butanone (MEK)ND H 5.00 ug/L 11/17/21 14:19 1Carbon disulfide ND H 5.00 ug/L 11/17/21 14:19 1Carbon tetrachloride ND H 5.00 ug/L 11/17/21 14:19 1ChlorobenzeneND H 5.00 ug/L 11/17/21 14:19 1ChlorodibromomethaneND H 5.00 ug/L 11/17/21 14:19 1ChloroethaneND H 5.00 ug/L 11/17/21 14:19 1ChloroformND H 5.00 ug/L 11/17/21 14:19 1ChloromethaneND H 5.00 ug/L 11/17/21 14:19 1CyclohexaneND H 5.00 ug/L 11/17/21 14:19 11,2-Dibromo-3-Chloropropane ND H 5.00 ug/L 11/17/21 14:19 11,2-Dichlorobenzene ND H 5.00 ug/L 11/17/21 14:19 11,3-Dichlorobenzene ND H 5.00 ug/L 11/17/21 14:19 11,4-Dichlorobenzene ND H 5.00 ug/L 11/17/21 14:19 1DichlorodifluoromethaneND H 5.00 ug/L 11/17/21 14:19 11,1-Dichloroethane ND H 5.00 ug/L 11/17/21 14:19 11,2-Dichloroethane ND H 5.00 ug/L 11/17/21 14:19 1cis-1,2-Dichloroethene ND H 5.00 ug/L 11/17/21 14:19 1trans-1,2-Dichloroethene ND H 5.00 ug/L 11/17/21 14:19 11,1-Dichloroethene ND H 5.00 ug/L 11/17/21 14:19 11,2-Dichloropropane ND H 5.00 ug/L 11/17/21 14:19 1cis-1,3-Dichloropropene ND H 5.00 ug/L 11/17/21 14:19 1trans-1,3-Dichloropropene ND H 1000 ug/L 11/17/21 14:19 11,4-Dioxane ND H 5.00 ug/L 11/17/21 14:19 1EthylbenzeneND H Eurofins TestAmerica, Pittsburgh Page 67 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-10Client Sample ID: MW-2a Matrix: WaterDate Collected: 11/02/21 16:40 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA (Continued) RL MDL 2-Hexanone ND H 5.00 ug/L 11/17/21 14:19 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 14:19 1IsopropylbenzeneND H 25.0 ug/L 11/17/21 14:19 1Methyl acetate ND H 5.00 ug/L 11/17/21 14:19 1MethylcyclohexaneND H 5.00 ug/L 11/17/21 14:19 1Methylene Chloride ND H 5.00 ug/L 11/17/21 14:19 14-Methyl-2-pentanone (MIBK)ND H 5.00 ug/L 11/17/21 14:19 1Methyl tert-butyl ether ND H 5.00 ug/L 11/17/21 14:19 1StyreneND H 5.00 ug/L 11/17/21 14:19 11,1,2,2-Tetrachloroethane ND H 5.00 ug/L 11/17/21 14:19 1TetrachloroetheneND H 5.00 ug/L 11/17/21 14:19 1TolueneND H 5.00 ug/L 11/17/21 14:19 11,2,3-Trichlorobenzene ND H 5.00 ug/L 11/17/21 14:19 11,2,4-Trichlorobenzene ND H 5.00 ug/L 11/17/21 14:19 11,1,1-Trichloroethane ND H 5.00 ug/L 11/17/21 14:19 11,1,2-Trichloroethane ND H 5.00 ug/L 11/17/21 14:19 1TrichloroetheneND H 5.00 ug/L 11/17/21 14:19 1TrichlorofluoromethaneND H 5.00 ug/L 11/17/21 14:19 11,1,2-Trichlorotrifluoroethane ND H 5.00 ug/L 11/17/21 14:19 1Vinyl chloride ND H 5.00 ug/L 11/17/21 14:19 1m-Xylene & p-Xylene ND H 5.00 ug/L 11/17/21 14:19 1o-Xylene ND H 5.00 ug/L 11/17/21 14:19 11,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)118 52 -151 11/17/21 14:19 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)94 11/17/21 14:19 153-124 4-Bromofluorobenzene (Surr)71 11/17/21 14:19 149-118 Dibromofluoromethane (Surr)115 11/17/21 14:19 160-132 Lab Sample ID: 180-129623-11Client Sample ID: MW-2I Matrix: WaterDate Collected: 11/02/21 15:55 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/10/21 22:50 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 95 50 -150 11/10/21 22:50 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/10/21 22:50 150-150 4-Bromofluorobenzene 103 11/10/21 22:50 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/16/21 20:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 20:12 1BenzeneND 5.00 ug/L 11/16/21 20:12 1ChlorobromomethaneND 5.00 ug/L 11/16/21 20:12 1DichlorobromomethaneND 5.00 ug/L 11/16/21 20:12 1BromoformND 5.00 ug/L 11/16/21 20:12 1BromomethaneND 5.00 ug/L 11/16/21 20:12 12-Butanone (MEK)ND Eurofins TestAmerica, Pittsburgh Page 68 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-11Client Sample ID: MW-2I Matrix: WaterDate Collected: 11/02/21 15:55 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Carbon disulfide ND 5.00 ug/L 11/16/21 20:12 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 20:12 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 20:12 1ChlorobenzeneND 5.00 ug/L 11/16/21 20:12 1ChlorodibromomethaneND 5.00 ug/L 11/16/21 20:12 1ChloroethaneND 5.00 ug/L 11/16/21 20:12 1ChloroformND 5.00 ug/L 11/16/21 20:12 1ChloromethaneND 5.00 ug/L 11/16/21 20:12 1CyclohexaneND 5.00 ug/L 11/16/21 20:12 11,2-Dibromo-3-Chloropropane ND *3 5.00 ug/L 11/16/21 20:12 11,2-Dichlorobenzene ND *3 5.00 ug/L 11/16/21 20:12 11,3-Dichlorobenzene ND *3 5.00 ug/L 11/16/21 20:12 11,4-Dichlorobenzene ND *3 5.00 ug/L 11/16/21 20:12 1DichlorodifluoromethaneND 5.00 ug/L 11/16/21 20:12 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 20:12 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 20:12 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 20:12 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 20:12 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 20:12 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 20:12 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 20:12 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 20:12 11,4-Dioxane ND 5.00 ug/L 11/16/21 20:12 1EthylbenzeneND 5.00 ug/L 11/16/21 20:12 12-Hexanone ND 5.00 ug/L 11/16/21 20:12 1IsopropylbenzeneND 25.0 ug/L 11/16/21 20:12 1Methyl acetate ND 5.00 ug/L 11/16/21 20:12 1MethylcyclohexaneND 5.00 ug/L 11/16/21 20:12 1Methylene Chloride ND 5.00 ug/L 11/16/21 20:12 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/16/21 20:12 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 20:12 1StyreneND 5.00 ug/L 11/16/21 20:12 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 20:12 1TetrachloroetheneND 5.00 ug/L 11/16/21 20:12 1TolueneND 5.00 ug/L 11/16/21 20:12 11,2,3-Trichlorobenzene ND *3 5.00 ug/L 11/16/21 20:12 11,2,4-Trichlorobenzene ND *3 5.00 ug/L 11/16/21 20:12 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 20:12 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 20:12 1TrichloroetheneND 5.00 ug/L 11/16/21 20:12 1TrichlorofluoromethaneND 5.00 ug/L 11/16/21 20:12 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 20:12 1Vinyl chloride ND 5.00 ug/L 11/16/21 20:12 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 20:12 1o-Xylene ND 5.00 ug/L 11/16/21 20:12 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)177 S1+52 -151 11/16/21 20:12 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)115 11/16/21 20:12 153-124 4-Bromofluorobenzene (Surr)87 11/16/21 20:12 149-118 Eurofins TestAmerica, Pittsburgh Page 69 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-11Client Sample ID: MW-2I Matrix: WaterDate Collected: 11/02/21 15:55 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Dibromofluoromethane (Surr)163 S1+60 -132 11/16/21 20:12 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA RL MDL Acetone ND H 20.0 ug/L 11/17/21 14:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 14:45 1BenzeneND H 5.00 ug/L 11/17/21 14:45 1ChlorobromomethaneND H 5.00 ug/L 11/17/21 14:45 1DichlorobromomethaneND H 5.00 ug/L 11/17/21 14:45 1BromoformND H 5.00 ug/L 11/17/21 14:45 1BromomethaneND H 5.00 ug/L 11/17/21 14:45 12-Butanone (MEK)ND H 5.00 ug/L 11/17/21 14:45 1Carbon disulfide ND H 5.00 ug/L 11/17/21 14:45 1Carbon tetrachloride ND H 5.00 ug/L 11/17/21 14:45 1ChlorobenzeneND H 5.00 ug/L 11/17/21 14:45 1ChlorodibromomethaneND H 5.00 ug/L 11/17/21 14:45 1ChloroethaneND H 5.00 ug/L 11/17/21 14:45 1ChloroformND H 5.00 ug/L 11/17/21 14:45 1ChloromethaneND H 5.00 ug/L 11/17/21 14:45 1CyclohexaneND H 5.00 ug/L 11/17/21 14:45 11,2-Dibromo-3-Chloropropane ND H 5.00 ug/L 11/17/21 14:45 11,2-Dichlorobenzene ND H 5.00 ug/L 11/17/21 14:45 11,3-Dichlorobenzene ND H 5.00 ug/L 11/17/21 14:45 11,4-Dichlorobenzene ND H 5.00 ug/L 11/17/21 14:45 1DichlorodifluoromethaneND H 5.00 ug/L 11/17/21 14:45 11,1-Dichloroethane ND H 5.00 ug/L 11/17/21 14:45 11,2-Dichloroethane ND H 5.00 ug/L 11/17/21 14:45 1cis-1,2-Dichloroethene ND H 5.00 ug/L 11/17/21 14:45 1trans-1,2-Dichloroethene ND H 5.00 ug/L 11/17/21 14:45 11,1-Dichloroethene ND H 5.00 ug/L 11/17/21 14:45 11,2-Dichloropropane ND H 5.00 ug/L 11/17/21 14:45 1cis-1,3-Dichloropropene ND H 5.00 ug/L 11/17/21 14:45 1trans-1,3-Dichloropropene ND H 1000 ug/L 11/17/21 14:45 11,4-Dioxane ND H 5.00 ug/L 11/17/21 14:45 1EthylbenzeneND H 5.00 ug/L 11/17/21 14:45 12-Hexanone ND H 5.00 ug/L 11/17/21 14:45 1IsopropylbenzeneND H 25.0 ug/L 11/17/21 14:45 1Methyl acetate ND H 5.00 ug/L 11/17/21 14:45 1MethylcyclohexaneND H 5.00 ug/L 11/17/21 14:45 1Methylene Chloride ND H 5.00 ug/L 11/17/21 14:45 14-Methyl-2-pentanone (MIBK)ND H 5.00 ug/L 11/17/21 14:45 1Methyl tert-butyl ether ND H 5.00 ug/L 11/17/21 14:45 1StyreneND H 5.00 ug/L 11/17/21 14:45 11,1,2,2-Tetrachloroethane ND H 5.00 ug/L 11/17/21 14:45 1TetrachloroetheneND H 5.00 ug/L 11/17/21 14:45 1TolueneND H 5.00 ug/L 11/17/21 14:45 11,2,3-Trichlorobenzene ND H 5.00 ug/L 11/17/21 14:45 11,2,4-Trichlorobenzene ND H 5.00 ug/L 11/17/21 14:45 11,1,1-Trichloroethane ND H 5.00 ug/L 11/17/21 14:45 11,1,2-Trichloroethane ND H Eurofins TestAmerica, Pittsburgh Page 70 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-11Client Sample ID: MW-2I Matrix: WaterDate Collected: 11/02/21 15:55 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA (Continued) RL MDL Trichloroethene ND H 5.00 ug/L 11/17/21 14:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 14:45 1TrichlorofluoromethaneND H 5.00 ug/L 11/17/21 14:45 11,1,2-Trichlorotrifluoroethane ND H 5.00 ug/L 11/17/21 14:45 1Vinyl chloride ND H 5.00 ug/L 11/17/21 14:45 1m-Xylene & p-Xylene ND H 5.00 ug/L 11/17/21 14:45 1o-Xylene ND H 5.00 ug/L 11/17/21 14:45 11,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)110 52 -151 11/17/21 14:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)88 11/17/21 14:45 153-124 4-Bromofluorobenzene (Surr)70 11/17/21 14:45 149-118 Dibromofluoromethane (Surr)107 11/17/21 14:45 160-132 Lab Sample ID: 180-129623-12Client Sample ID: MW-17I Matrix: WaterDate Collected: 11/02/21 16:00 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 1.28 1.00 0.300 ug/L 11/10/21 23:15 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 97 50 -150 11/10/21 23:15 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/10/21 23:15 150-150 4-Bromofluorobenzene 103 11/10/21 23:15 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND *3 20.0 ug/L 11/16/21 20:38 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 20:38 1BenzeneND *3 5.00 ug/L 11/16/21 20:38 1ChlorobromomethaneND *3 5.00 ug/L 11/16/21 20:38 1DichlorobromomethaneND *3 5.00 ug/L 11/16/21 20:38 1BromoformND *3 5.00 ug/L 11/16/21 20:38 1BromomethaneND *3 5.00 ug/L 11/16/21 20:38 12-Butanone (MEK)ND *3 5.00 ug/L 11/16/21 20:38 1Carbon disulfide ND *3 5.00 ug/L 11/16/21 20:38 1Carbon tetrachloride ND *3 5.00 ug/L 11/16/21 20:38 1ChlorobenzeneND *3 5.00 ug/L 11/16/21 20:38 1ChlorodibromomethaneND *3 5.00 ug/L 11/16/21 20:38 1ChloroethaneND *3 5.00 ug/L 11/16/21 20:38 1ChloroformND *3 5.00 ug/L 11/16/21 20:38 1ChloromethaneND *3 5.00 ug/L 11/16/21 20:38 1CyclohexaneND *3 5.00 ug/L 11/16/21 20:38 11,2-Dibromo-3-Chloropropane ND *3 5.00 ug/L 11/16/21 20:38 11,2-Dichlorobenzene ND *3 5.00 ug/L 11/16/21 20:38 11,3-Dichlorobenzene ND *3 5.00 ug/L 11/16/21 20:38 11,4-Dichlorobenzene ND *3 5.00 ug/L 11/16/21 20:38 1DichlorodifluoromethaneND *3 5.00 ug/L 11/16/21 20:38 11,1-Dichloroethane ND *3 5.00 ug/L 11/16/21 20:38 11,2-Dichloroethane ND *3 Eurofins TestAmerica, Pittsburgh Page 71 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-12Client Sample ID: MW-17I Matrix: WaterDate Collected: 11/02/21 16:00 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL cis-1,2-Dichloroethene ND *3 5.00 ug/L 11/16/21 20:38 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 20:38 1trans-1,2-Dichloroethene ND *3 5.00 ug/L 11/16/21 20:38 11,1-Dichloroethene ND *3 5.00 ug/L 11/16/21 20:38 11,2-Dichloropropane ND *3 5.00 ug/L 11/16/21 20:38 1cis-1,3-Dichloropropene ND *3 5.00 ug/L 11/16/21 20:38 1trans-1,3-Dichloropropene ND *3 1000 ug/L 11/16/21 20:38 11,4-Dioxane ND *3 5.00 ug/L 11/16/21 20:38 1EthylbenzeneND *3 5.00 ug/L 11/16/21 20:38 12-Hexanone ND *3 5.00 ug/L 11/16/21 20:38 1IsopropylbenzeneND *3 25.0 ug/L 11/16/21 20:38 1Methyl acetate ND *3 5.00 ug/L 11/16/21 20:38 1MethylcyclohexaneND *3 5.00 ug/L 11/16/21 20:38 1Methylene Chloride ND *3 5.00 ug/L 11/16/21 20:38 14-Methyl-2-pentanone (MIBK)ND *3 5.00 ug/L 11/16/21 20:38 1Methyl tert-butyl ether ND *3 5.00 ug/L 11/16/21 20:38 1StyreneND *3 5.00 ug/L 11/16/21 20:38 11,1,2,2-Tetrachloroethane ND *3 5.00 ug/L 11/16/21 20:38 1TetrachloroetheneND *3 5.00 ug/L 11/16/21 20:38 1TolueneND *3 5.00 ug/L 11/16/21 20:38 11,2,3-Trichlorobenzene ND *3 5.00 ug/L 11/16/21 20:38 11,2,4-Trichlorobenzene ND *3 5.00 ug/L 11/16/21 20:38 11,1,1-Trichloroethane ND *3 5.00 ug/L 11/16/21 20:38 11,1,2-Trichloroethane ND *3 5.00 ug/L 11/16/21 20:38 1TrichloroetheneND *3 5.00 ug/L 11/16/21 20:38 1TrichlorofluoromethaneND *3 5.00 ug/L 11/16/21 20:38 11,1,2-Trichlorotrifluoroethane ND *3 5.00 ug/L 11/16/21 20:38 1Vinyl chloride ND *3 5.00 ug/L 11/16/21 20:38 1m-Xylene & p-Xylene ND *3 5.00 ug/L 11/16/21 20:38 1o-Xylene ND *3 5.00 ug/L 11/16/21 20:38 11,2-Dibromoethane ND *3 1,2-Dichloroethane-d4 (Surr)185 S1+ *3 52 -151 11/16/21 20:38 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)120 *3 11/16/21 20:38 153-124 4-Bromofluorobenzene (Surr)84 *3 11/16/21 20:38 149-118 Dibromofluoromethane (Surr)177 S1+ *3 11/16/21 20:38 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA RL MDL Acetone ND H 20.0 ug/L 11/17/21 15:11 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 15:11 1BenzeneND H 5.00 ug/L 11/17/21 15:11 1ChlorobromomethaneND H 5.00 ug/L 11/17/21 15:11 1DichlorobromomethaneND H 5.00 ug/L 11/17/21 15:11 1BromoformND H 5.00 ug/L 11/17/21 15:11 1BromomethaneND H 5.00 ug/L 11/17/21 15:11 12-Butanone (MEK)ND H 5.00 ug/L 11/17/21 15:11 1Carbon disulfide ND H 5.00 ug/L 11/17/21 15:11 1Carbon tetrachloride ND H 5.00 ug/L 11/17/21 15:11 1ChlorobenzeneND H 5.00 ug/L 11/17/21 15:11 1ChlorodibromomethaneND H Eurofins TestAmerica, Pittsburgh Page 72 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-12Client Sample ID: MW-17I Matrix: WaterDate Collected: 11/02/21 16:00 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA (Continued) RL MDL Chloroethane ND H 5.00 ug/L 11/17/21 15:11 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 15:11 1ChloroformND H 5.00 ug/L 11/17/21 15:11 1ChloromethaneND H 5.00 ug/L 11/17/21 15:11 1CyclohexaneND H 5.00 ug/L 11/17/21 15:11 11,2-Dibromo-3-Chloropropane ND H 5.00 ug/L 11/17/21 15:11 11,2-Dichlorobenzene ND H 5.00 ug/L 11/17/21 15:11 11,3-Dichlorobenzene ND H 5.00 ug/L 11/17/21 15:11 11,4-Dichlorobenzene ND H 5.00 ug/L 11/17/21 15:11 1DichlorodifluoromethaneND H 5.00 ug/L 11/17/21 15:11 11,1-Dichloroethane ND H 5.00 ug/L 11/17/21 15:11 11,2-Dichloroethane ND H 5.00 ug/L 11/17/21 15:11 1cis-1,2-Dichloroethene ND H 5.00 ug/L 11/17/21 15:11 1trans-1,2-Dichloroethene ND H 5.00 ug/L 11/17/21 15:11 11,1-Dichloroethene ND H 5.00 ug/L 11/17/21 15:11 11,2-Dichloropropane ND H 5.00 ug/L 11/17/21 15:11 1cis-1,3-Dichloropropene ND H 5.00 ug/L 11/17/21 15:11 1trans-1,3-Dichloropropene ND H 1000 ug/L 11/17/21 15:11 11,4-Dioxane ND H 5.00 ug/L 11/17/21 15:11 1EthylbenzeneND H 5.00 ug/L 11/17/21 15:11 12-Hexanone ND H 5.00 ug/L 11/17/21 15:11 1IsopropylbenzeneND H 25.0 ug/L 11/17/21 15:11 1Methyl acetate ND H 5.00 ug/L 11/17/21 15:11 1MethylcyclohexaneND H 5.00 ug/L 11/17/21 15:11 1Methylene Chloride ND H 5.00 ug/L 11/17/21 15:11 14-Methyl-2-pentanone (MIBK)ND H 5.00 ug/L 11/17/21 15:11 1Methyl tert-butyl ether ND H 5.00 ug/L 11/17/21 15:11 1StyreneND H 5.00 ug/L 11/17/21 15:11 11,1,2,2-Tetrachloroethane ND H 5.00 ug/L 11/17/21 15:11 1TetrachloroetheneND H 5.00 ug/L 11/17/21 15:11 1TolueneND H 5.00 ug/L 11/17/21 15:11 11,2,3-Trichlorobenzene ND H 5.00 ug/L 11/17/21 15:11 11,2,4-Trichlorobenzene ND H 5.00 ug/L 11/17/21 15:11 11,1,1-Trichloroethane ND H 5.00 ug/L 11/17/21 15:11 11,1,2-Trichloroethane ND H 5.00 ug/L 11/17/21 15:11 1TrichloroetheneND H 5.00 ug/L 11/17/21 15:11 1TrichlorofluoromethaneND H 5.00 ug/L 11/17/21 15:11 11,1,2-Trichlorotrifluoroethane ND H 5.00 ug/L 11/17/21 15:11 1Vinyl chloride ND H 5.00 ug/L 11/17/21 15:11 1m-Xylene & p-Xylene ND H 5.00 ug/L 11/17/21 15:11 1o-Xylene ND H 5.00 ug/L 11/17/21 15:11 11,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)116 52 -151 11/17/21 15:11 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)95 11/17/21 15:11 153-124 4-Bromofluorobenzene (Surr)71 11/17/21 15:11 149-118 Dibromofluoromethane (Surr)114 11/17/21 15:11 160-132 Eurofins TestAmerica, Pittsburgh Page 73 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-13Client Sample ID: MW-17I-c Matrix: WaterDate Collected: 11/02/21 16:30 Date Received: 11/05/21 10:00 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/10/21 23:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 94 50 -150 11/10/21 23:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/10/21 23:40 150-150 4-Bromofluorobenzene 103 11/10/21 23:40 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/16/21 21:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 21:03 1BenzeneND 5.00 ug/L 11/16/21 21:03 1ChlorobromomethaneND 5.00 ug/L 11/16/21 21:03 1DichlorobromomethaneND 5.00 ug/L 11/16/21 21:03 1BromoformND 5.00 ug/L 11/16/21 21:03 1BromomethaneND 5.00 ug/L 11/16/21 21:03 12-Butanone (MEK)ND 5.00 ug/L 11/16/21 21:03 1Carbon disulfide ND 5.00 ug/L 11/16/21 21:03 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 21:03 1ChlorobenzeneND 5.00 ug/L 11/16/21 21:03 1ChlorodibromomethaneND 5.00 ug/L 11/16/21 21:03 1ChloroethaneND 5.00 ug/L 11/16/21 21:03 1ChloroformND 5.00 ug/L 11/16/21 21:03 1ChloromethaneND 5.00 ug/L 11/16/21 21:03 1CyclohexaneND 5.00 ug/L 11/16/21 21:03 11,2-Dibromo-3-Chloropropane ND *3 5.00 ug/L 11/16/21 21:03 11,2-Dichlorobenzene ND *3 5.00 ug/L 11/16/21 21:03 11,3-Dichlorobenzene ND *3 5.00 ug/L 11/16/21 21:03 11,4-Dichlorobenzene ND *3 5.00 ug/L 11/16/21 21:03 1DichlorodifluoromethaneND 5.00 ug/L 11/16/21 21:03 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 21:03 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 21:03 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 21:03 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 21:03 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 21:03 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 21:03 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 21:03 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 21:03 11,4-Dioxane ND 5.00 ug/L 11/16/21 21:03 1EthylbenzeneND 5.00 ug/L 11/16/21 21:03 12-Hexanone ND 5.00 ug/L 11/16/21 21:03 1IsopropylbenzeneND 25.0 ug/L 11/16/21 21:03 1Methyl acetate ND 5.00 ug/L 11/16/21 21:03 1MethylcyclohexaneND 5.00 ug/L 11/16/21 21:03 1Methylene Chloride ND 5.00 ug/L 11/16/21 21:03 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/16/21 21:03 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 21:03 1StyreneND 5.00 ug/L 11/16/21 21:03 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 21:03 1TetrachloroetheneND 5.00 ug/L 11/16/21 21:03 1TolueneND Eurofins TestAmerica, Pittsburgh Page 74 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-13Client Sample ID: MW-17I-c Matrix: WaterDate Collected: 11/02/21 16:30 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2,3-Trichlorobenzene ND *3 5.00 ug/L 11/16/21 21:03 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/16/21 21:03 11,2,4-Trichlorobenzene ND *3 5.00 ug/L 11/16/21 21:03 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 21:03 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 21:03 1TrichloroetheneND 5.00 ug/L 11/16/21 21:03 1TrichlorofluoromethaneND 5.00 ug/L 11/16/21 21:03 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 21:03 1Vinyl chloride ND 5.00 ug/L 11/16/21 21:03 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 21:03 1o-Xylene ND 5.00 ug/L 11/16/21 21:03 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)181 S1+52 -151 11/16/21 21:03 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)108 11/16/21 21:03 153-124 4-Bromofluorobenzene (Surr)89 11/16/21 21:03 149-118 Dibromofluoromethane (Surr)167 S1+11/16/21 21:03 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA RL MDL Acetone ND H 20.0 ug/L 11/17/21 15:36 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 15:36 1BenzeneND H 5.00 ug/L 11/17/21 15:36 1ChlorobromomethaneND H 5.00 ug/L 11/17/21 15:36 1DichlorobromomethaneND H 5.00 ug/L 11/17/21 15:36 1BromoformND H 5.00 ug/L 11/17/21 15:36 1BromomethaneND H 5.00 ug/L 11/17/21 15:36 12-Butanone (MEK)ND H 5.00 ug/L 11/17/21 15:36 1Carbon disulfide ND H 5.00 ug/L 11/17/21 15:36 1Carbon tetrachloride ND H 5.00 ug/L 11/17/21 15:36 1ChlorobenzeneND H 5.00 ug/L 11/17/21 15:36 1ChlorodibromomethaneND H 5.00 ug/L 11/17/21 15:36 1ChloroethaneND H 5.00 ug/L 11/17/21 15:36 1ChloroformND H 5.00 ug/L 11/17/21 15:36 1ChloromethaneND H 5.00 ug/L 11/17/21 15:36 1CyclohexaneND H 5.00 ug/L 11/17/21 15:36 11,2-Dibromo-3-Chloropropane ND H 5.00 ug/L 11/17/21 15:36 11,2-Dichlorobenzene ND H 5.00 ug/L 11/17/21 15:36 11,3-Dichlorobenzene ND H 5.00 ug/L 11/17/21 15:36 11,4-Dichlorobenzene ND H 5.00 ug/L 11/17/21 15:36 1DichlorodifluoromethaneND H 5.00 ug/L 11/17/21 15:36 11,1-Dichloroethane ND H 5.00 ug/L 11/17/21 15:36 11,2-Dichloroethane ND H 5.00 ug/L 11/17/21 15:36 1cis-1,2-Dichloroethene ND H 5.00 ug/L 11/17/21 15:36 1trans-1,2-Dichloroethene ND H 5.00 ug/L 11/17/21 15:36 11,1-Dichloroethene ND H 5.00 ug/L 11/17/21 15:36 11,2-Dichloropropane ND H 5.00 ug/L 11/17/21 15:36 1cis-1,3-Dichloropropene ND H 5.00 ug/L 11/17/21 15:36 1trans-1,3-Dichloropropene ND H 1000 ug/L 11/17/21 15:36 11,4-Dioxane ND H 5.00 ug/L 11/17/21 15:36 1EthylbenzeneND H Eurofins TestAmerica, Pittsburgh Page 75 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129623-13Client Sample ID: MW-17I-c Matrix: WaterDate Collected: 11/02/21 16:30 Date Received: 11/05/21 10:00 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - RA (Continued) RL MDL 2-Hexanone ND H 5.00 ug/L 11/17/21 15:36 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/17/21 15:36 1IsopropylbenzeneND H 25.0 ug/L 11/17/21 15:36 1Methyl acetate ND H 5.00 ug/L 11/17/21 15:36 1MethylcyclohexaneND H 5.00 ug/L 11/17/21 15:36 1Methylene Chloride ND H 5.00 ug/L 11/17/21 15:36 14-Methyl-2-pentanone (MIBK)ND H 5.00 ug/L 11/17/21 15:36 1Methyl tert-butyl ether ND H 5.00 ug/L 11/17/21 15:36 1StyreneND H 5.00 ug/L 11/17/21 15:36 11,1,2,2-Tetrachloroethane ND H 5.00 ug/L 11/17/21 15:36 1TetrachloroetheneND H 5.00 ug/L 11/17/21 15:36 1TolueneND H 5.00 ug/L 11/17/21 15:36 11,2,3-Trichlorobenzene ND H 5.00 ug/L 11/17/21 15:36 11,2,4-Trichlorobenzene ND H 5.00 ug/L 11/17/21 15:36 11,1,1-Trichloroethane ND H 5.00 ug/L 11/17/21 15:36 11,1,2-Trichloroethane ND H 5.00 ug/L 11/17/21 15:36 1TrichloroetheneND H 5.00 ug/L 11/17/21 15:36 1TrichlorofluoromethaneND H 5.00 ug/L 11/17/21 15:36 11,1,2-Trichlorotrifluoroethane ND H 5.00 ug/L 11/17/21 15:36 1Vinyl chloride ND H 5.00 ug/L 11/17/21 15:36 1m-Xylene & p-Xylene ND H 5.00 ug/L 11/17/21 15:36 1o-Xylene ND H 5.00 ug/L 11/17/21 15:36 11,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)127 52 -151 11/17/21 15:36 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)95 11/17/21 15:36 153-124 4-Bromofluorobenzene (Surr)73 11/17/21 15:36 149-118 Dibromofluoromethane (Surr)123 11/17/21 15:36 160-132 Lab Sample ID: 180-129668-1Client Sample ID: MW-6I Matrix: WaterDate Collected: 11/04/21 12:05 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 0.818 J 1.00 0.300 ug/L 11/11/21 19:30 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 97 50 -150 11/11/21 19:30 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 11/11/21 19:30 150-150 4-Bromofluorobenzene 102 11/11/21 19:30 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 11:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 11:22 1BenzeneND 5.00 ug/L 11/18/21 11:22 1ChlorobromomethaneND 5.00 ug/L 11/18/21 11:22 1DichlorobromomethaneND 5.00 ug/L 11/18/21 11:22 1BromoformND 5.00 ug/L 11/18/21 11:22 1BromomethaneND 5.00 ug/L 11/18/21 11:22 12-Butanone (MEK)ND Eurofins TestAmerica, Pittsburgh Page 76 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-1Client Sample ID: MW-6I Matrix: WaterDate Collected: 11/04/21 12:05 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Carbon disulfide ND 5.00 ug/L 11/18/21 11:22 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 11:22 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 11:22 1ChlorobenzeneND 5.00 ug/L 11/18/21 11:22 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 11:22 1ChloroethaneND 5.00 ug/L 11/18/21 11:22 1ChloroformND 5.00 ug/L 11/18/21 11:22 1ChloromethaneND 5.00 ug/L 11/18/21 11:22 1CyclohexaneND 5.00 ug/L 11/18/21 11:22 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 11:22 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 11:22 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 11:22 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 11:22 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 11:22 11,1-Dichloroethane ND 5.00 ug/L 11/18/21 11:22 11,2-Dichloroethane ND 5.00 ug/L 11/18/21 11:22 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 11:22 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 11:22 11,1-Dichloroethene ND 5.00 ug/L 11/18/21 11:22 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 11:22 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 11:22 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 11:22 11,4-Dioxane ND 5.00 ug/L 11/18/21 11:22 1EthylbenzeneND 5.00 ug/L 11/18/21 11:22 12-Hexanone ND 5.00 ug/L 11/18/21 11:22 1IsopropylbenzeneND 25.0 ug/L 11/18/21 11:22 1Methyl acetate ND 5.00 ug/L 11/18/21 11:22 1MethylcyclohexaneND 5.00 ug/L 11/18/21 11:22 1Methylene Chloride ND 5.00 ug/L 11/18/21 11:22 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 11:22 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 11:22 1StyreneND 5.00 ug/L 11/18/21 11:22 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 11:22 1TetrachloroetheneND 5.00 ug/L 11/18/21 11:22 1TolueneND 5.00 ug/L 11/18/21 11:22 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 11:22 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 11:22 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 11:22 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 11:22 1TrichloroetheneND 5.00 ug/L 11/18/21 11:22 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 11:22 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 11:22 1Vinyl chloride ND 5.00 ug/L 11/18/21 11:22 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 11:22 1o-Xylene ND 5.00 ug/L 11/18/21 11:22 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)100 52 -151 11/18/21 11:22 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 11/18/21 11:22 153-124 4-Bromofluorobenzene (Surr)101 11/18/21 11:22 149-118 Eurofins TestAmerica, Pittsburgh Page 77 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-1Client Sample ID: MW-6I Matrix: WaterDate Collected: 11/04/21 12:05 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Dibromofluoromethane (Surr)102 60 -132 11/18/21 11:22 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Lab Sample ID: 180-129668-2Client Sample ID: MW-6 Matrix: WaterDate Collected: 11/04/21 12:40 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/11/21 19:55 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 97 50 -150 11/11/21 19:55 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 11/11/21 19:55 150-150 4-Bromofluorobenzene 103 11/11/21 19:55 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 11:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 11:45 1BenzeneND 5.00 ug/L 11/18/21 11:45 1ChlorobromomethaneND 5.00 ug/L 11/18/21 11:45 1DichlorobromomethaneND 5.00 ug/L 11/18/21 11:45 1BromoformND 5.00 ug/L 11/18/21 11:45 1BromomethaneND 5.00 ug/L 11/18/21 11:45 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 11:45 1Carbon disulfide ND 5.00 ug/L 11/18/21 11:45 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 11:45 1ChlorobenzeneND 5.00 ug/L 11/18/21 11:45 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 11:45 1ChloroethaneND 5.00 ug/L 11/18/21 11:45 1ChloroformND 5.00 ug/L 11/18/21 11:45 1ChloromethaneND 5.00 ug/L 11/18/21 11:45 1CyclohexaneND 5.00 ug/L 11/18/21 11:45 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 11:45 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 11:45 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 11:45 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 11:45 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 11:45 11,1-Dichloroethane ND 5.00 ug/L 11/18/21 11:45 11,2-Dichloroethane ND 5.00 ug/L 11/18/21 11:45 1cis-1,2-Dichloroethene 16.7 5.00 ug/L 11/18/21 11:45 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 11:45 11,1-Dichloroethene ND 5.00 ug/L 11/18/21 11:45 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 11:45 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 11:45 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 11:45 11,4-Dioxane ND 5.00 ug/L 11/18/21 11:45 1EthylbenzeneND 5.00 ug/L 11/18/21 11:45 12-Hexanone ND 5.00 ug/L 11/18/21 11:45 1IsopropylbenzeneND 25.0 ug/L 11/18/21 11:45 1Methyl acetate ND Eurofins TestAmerica, Pittsburgh Page 78 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-2Client Sample ID: MW-6 Matrix: WaterDate Collected: 11/04/21 12:40 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Methylcyclohexane ND 5.00 ug/L 11/18/21 11:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 11:45 1Methylene Chloride ND 5.00 ug/L 11/18/21 11:45 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 11:45 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 11:45 1StyreneND 5.00 ug/L 11/18/21 11:45 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 11:45 1TetrachloroetheneND 5.00 ug/L 11/18/21 11:45 1TolueneND 5.00 ug/L 11/18/21 11:45 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 11:45 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 11:45 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 11:45 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 11:45 1Trichloroethene6.20 5.00 ug/L 11/18/21 11:45 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 11:45 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 11:45 1Vinyl chloride ND 5.00 ug/L 11/18/21 11:45 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 11:45 1o-Xylene ND 5.00 ug/L 11/18/21 11:45 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)96 52 -151 11/18/21 11:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)97 11/18/21 11:45 153-124 4-Bromofluorobenzene (Surr)97 11/18/21 11:45 149-118 Dibromofluoromethane (Surr)99 11/18/21 11:45 160-132 Lab Sample ID: 180-129668-3Client Sample ID: MW-4 Matrix: WaterDate Collected: 11/04/21 13:35 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 2.76 1.00 0.300 ug/L 11/11/21 20:20 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 95 50 -150 11/11/21 20:20 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 11/11/21 20:20 150-150 4-Bromofluorobenzene 102 11/11/21 20:20 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 12:08 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 12:08 1BenzeneND 5.00 ug/L 11/18/21 12:08 1ChlorobromomethaneND 5.00 ug/L 11/18/21 12:08 1DichlorobromomethaneND 5.00 ug/L 11/18/21 12:08 1BromoformND 5.00 ug/L 11/18/21 12:08 1BromomethaneND 5.00 ug/L 11/18/21 12:08 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 12:08 1Carbon disulfide ND 5.00 ug/L 11/18/21 12:08 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 12:08 1ChlorobenzeneND Eurofins TestAmerica, Pittsburgh Page 79 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-3Client Sample ID: MW-4 Matrix: WaterDate Collected: 11/04/21 13:35 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL Chlorodibromomethane ND 5.00 ug/L 11/18/21 12:08 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 12:08 1ChloroethaneND 5.00 ug/L 11/18/21 12:08 1ChloroformND 5.00 ug/L 11/18/21 12:08 1ChloromethaneND 5.00 ug/L 11/18/21 12:08 1CyclohexaneND 5.00 ug/L 11/18/21 12:08 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 12:08 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 12:08 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 12:08 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 12:08 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 12:08 11,1-Dichloroethane ND 5.00 ug/L 11/18/21 12:08 11,2-Dichloroethane ND 5.00 ug/L 11/18/21 12:08 1cis-1,2-Dichloroethene 14.8 5.00 ug/L 11/18/21 12:08 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 12:08 11,1-Dichloroethene ND 5.00 ug/L 11/18/21 12:08 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 12:08 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 12:08 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 12:08 11,4-Dioxane ND 5.00 ug/L 11/18/21 12:08 1EthylbenzeneND 5.00 ug/L 11/18/21 12:08 12-Hexanone ND 5.00 ug/L 11/18/21 12:08 1IsopropylbenzeneND 25.0 ug/L 11/18/21 12:08 1Methyl acetate ND 5.00 ug/L 11/18/21 12:08 1MethylcyclohexaneND 5.00 ug/L 11/18/21 12:08 1Methylene Chloride ND 5.00 ug/L 11/18/21 12:08 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 12:08 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 12:08 1StyreneND 5.00 ug/L 11/18/21 12:08 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 12:08 1TetrachloroetheneND 5.00 ug/L 11/18/21 12:08 1TolueneND 5.00 ug/L 11/18/21 12:08 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 12:08 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 12:08 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 12:08 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 12:08 1TrichloroetheneND 5.00 ug/L 11/18/21 12:08 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 12:08 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 12:08 1Vinyl chloride ND 5.00 ug/L 11/18/21 12:08 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 12:08 1o-Xylene ND 5.00 ug/L 11/18/21 12:08 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)97 52 -151 11/18/21 12:08 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)99 11/18/21 12:08 153-124 4-Bromofluorobenzene (Surr)98 11/18/21 12:08 149-118 Dibromofluoromethane (Surr)98 11/18/21 12:08 160-132 Eurofins TestAmerica, Pittsburgh Page 80 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-4Client Sample ID: MW-4I Matrix: WaterDate Collected: 11/04/21 14:15 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 15.4 1.00 0.300 ug/L 11/11/21 20:45 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 97 50 -150 11/11/21 20:45 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 11/11/21 20:45 150-150 4-Bromofluorobenzene 102 11/11/21 20:45 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 12:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 12:31 1BenzeneND 5.00 ug/L 11/18/21 12:31 1ChlorobromomethaneND 5.00 ug/L 11/18/21 12:31 1DichlorobromomethaneND 5.00 ug/L 11/18/21 12:31 1BromoformND 5.00 ug/L 11/18/21 12:31 1BromomethaneND 5.00 ug/L 11/18/21 12:31 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 12:31 1Carbon disulfide ND 5.00 ug/L 11/18/21 12:31 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 12:31 1ChlorobenzeneND 5.00 ug/L 11/18/21 12:31 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 12:31 1Chloroethane6.66 5.00 ug/L 11/18/21 12:31 1ChloroformND 5.00 ug/L 11/18/21 12:31 1ChloromethaneND 5.00 ug/L 11/18/21 12:31 1CyclohexaneND 5.00 ug/L 11/18/21 12:31 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 12:31 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 12:31 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 12:31 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 12:31 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 12:31 11,1-Dichloroethane ND 5.00 ug/L 11/18/21 12:31 11,2-Dichloroethane ND 5.00 ug/L 11/18/21 12:31 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 12:31 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 12:31 11,1-Dichloroethene ND 5.00 ug/L 11/18/21 12:31 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 12:31 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 12:31 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 12:31 11,4-Dioxane ND 5.00 ug/L 11/18/21 12:31 1EthylbenzeneND 5.00 ug/L 11/18/21 12:31 12-Hexanone ND 5.00 ug/L 11/18/21 12:31 1IsopropylbenzeneND 25.0 ug/L 11/18/21 12:31 1Methyl acetate ND 5.00 ug/L 11/18/21 12:31 1MethylcyclohexaneND 5.00 ug/L 11/18/21 12:31 1Methylene Chloride ND 5.00 ug/L 11/18/21 12:31 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 12:31 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 12:31 1StyreneND 5.00 ug/L 11/18/21 12:31 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 12:31 1TetrachloroetheneND 5.00 ug/L 11/18/21 12:31 1TolueneND Eurofins TestAmerica, Pittsburgh Page 81 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-4Client Sample ID: MW-4I Matrix: WaterDate Collected: 11/04/21 14:15 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 12:31 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 12:31 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 12:31 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 12:31 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 12:31 1TrichloroetheneND 5.00 ug/L 11/18/21 12:31 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 12:31 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 12:31 1Vinyl chloride ND 5.00 ug/L 11/18/21 12:31 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 12:31 1o-Xylene ND 5.00 ug/L 11/18/21 12:31 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)97 52 -151 11/18/21 12:31 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)99 11/18/21 12:31 153-124 4-Bromofluorobenzene (Surr)98 11/18/21 12:31 149-118 Dibromofluoromethane (Surr)100 11/18/21 12:31 160-132 Lab Sample ID: 180-129668-5Client Sample ID: MW-16 Matrix: WaterDate Collected: 11/04/21 11:00 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 2.23 1.00 0.300 ug/L 11/11/21 21:10 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 95 50 -150 11/11/21 21:10 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 11/11/21 21:10 150-150 4-Bromofluorobenzene 102 11/11/21 21:10 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 12:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 12:54 1BenzeneND 5.00 ug/L 11/18/21 12:54 1ChlorobromomethaneND 5.00 ug/L 11/18/21 12:54 1DichlorobromomethaneND 5.00 ug/L 11/18/21 12:54 1BromoformND 5.00 ug/L 11/18/21 12:54 1BromomethaneND 5.00 ug/L 11/18/21 12:54 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 12:54 1Carbon disulfide ND 5.00 ug/L 11/18/21 12:54 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 12:54 1ChlorobenzeneND 5.00 ug/L 11/18/21 12:54 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 12:54 1ChloroethaneND 5.00 ug/L 11/18/21 12:54 1ChloroformND 5.00 ug/L 11/18/21 12:54 1ChloromethaneND 5.00 ug/L 11/18/21 12:54 1CyclohexaneND 5.00 ug/L 11/18/21 12:54 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 12:54 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 12:54 11,3-Dichlorobenzene ND Eurofins TestAmerica, Pittsburgh Page 82 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-5Client Sample ID: MW-16 Matrix: WaterDate Collected: 11/04/21 11:00 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 12:54 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 12:54 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 12:54 11,1-Dichloroethane ND 5.00 ug/L 11/18/21 12:54 11,2-Dichloroethane ND 5.00 ug/L 11/18/21 12:54 1cis-1,2-Dichloroethene 56.5 5.00 ug/L 11/18/21 12:54 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 12:54 11,1-Dichloroethene ND 5.00 ug/L 11/18/21 12:54 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 12:54 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 12:54 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 12:54 11,4-Dioxane ND 5.00 ug/L 11/18/21 12:54 1EthylbenzeneND 5.00 ug/L 11/18/21 12:54 12-Hexanone ND 5.00 ug/L 11/18/21 12:54 1IsopropylbenzeneND 25.0 ug/L 11/18/21 12:54 1Methyl acetate ND 5.00 ug/L 11/18/21 12:54 1MethylcyclohexaneND 5.00 ug/L 11/18/21 12:54 1Methylene Chloride ND 5.00 ug/L 11/18/21 12:54 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 12:54 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 12:54 1StyreneND 5.00 ug/L 11/18/21 12:54 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 12:54 1TetrachloroetheneND 5.00 ug/L 11/18/21 12:54 1TolueneND 5.00 ug/L 11/18/21 12:54 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 12:54 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 12:54 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 12:54 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 12:54 1TrichloroetheneND 5.00 ug/L 11/18/21 12:54 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 12:54 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 12:54 1Vinyl chloride ND 5.00 ug/L 11/18/21 12:54 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 12:54 1o-Xylene ND 5.00 ug/L 11/18/21 12:54 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)94 52 -151 11/18/21 12:54 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 11/18/21 12:54 153-124 4-Bromofluorobenzene (Surr)95 11/18/21 12:54 149-118 Dibromofluoromethane (Surr)97 11/18/21 12:54 160-132 Lab Sample ID: 180-129668-6Client Sample ID: MW-19I Matrix: WaterDate Collected: 11/04/21 10:30 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 27.4 1.00 0.300 ug/L 11/11/21 21:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins TestAmerica, Pittsburgh Page 83 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-6Client Sample ID: MW-19I Matrix: WaterDate Collected: 11/04/21 10:30 Date Received: 11/06/21 09:30 Dibromofluoromethane 95 50 -150 11/11/21 21:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 11/11/21 21:35 150-150 4-Bromofluorobenzene 103 11/11/21 21:35 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 13:18 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 13:18 1BenzeneND 5.00 ug/L 11/18/21 13:18 1ChlorobromomethaneND 5.00 ug/L 11/18/21 13:18 1DichlorobromomethaneND 5.00 ug/L 11/18/21 13:18 1BromoformND 5.00 ug/L 11/18/21 13:18 1BromomethaneND 5.00 ug/L 11/18/21 13:18 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 13:18 1Carbon disulfide ND 5.00 ug/L 11/18/21 13:18 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 13:18 1ChlorobenzeneND 5.00 ug/L 11/18/21 13:18 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 13:18 1ChloroethaneND 5.00 ug/L 11/18/21 13:18 1ChloroformND 5.00 ug/L 11/18/21 13:18 1ChloromethaneND 5.00 ug/L 11/18/21 13:18 1CyclohexaneND 5.00 ug/L 11/18/21 13:18 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 13:18 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 13:18 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 13:18 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 13:18 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 13:18 11,1-Dichloroethane 32.5 5.00 ug/L 11/18/21 13:18 11,2-Dichloroethane 9.31 5.00 ug/L 11/18/21 13:18 1cis-1,2-Dichloroethene 144 5.00 ug/L 11/18/21 13:18 1trans-1,2-Dichloroethene 5.36 5.00 ug/L 11/18/21 13:18 11,1-Dichloroethene 26.8 5.00 ug/L 11/18/21 13:18 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 13:18 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 13:18 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 13:18 11,4-Dioxane ND 5.00 ug/L 11/18/21 13:18 1EthylbenzeneND 5.00 ug/L 11/18/21 13:18 12-Hexanone ND 5.00 ug/L 11/18/21 13:18 1IsopropylbenzeneND 25.0 ug/L 11/18/21 13:18 1Methyl acetate ND 5.00 ug/L 11/18/21 13:18 1MethylcyclohexaneND 5.00 ug/L 11/18/21 13:18 1Methylene Chloride ND 5.00 ug/L 11/18/21 13:18 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 13:18 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 13:18 1StyreneND 5.00 ug/L 11/18/21 13:18 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 13:18 1Tetrachloroethene19.5 5.00 ug/L 11/18/21 13:18 1TolueneND 5.00 ug/L 11/18/21 13:18 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 13:18 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 13:18 11,1,1-Trichloroethane ND Eurofins TestAmerica, Pittsburgh Page 84 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-6Client Sample ID: MW-19I Matrix: WaterDate Collected: 11/04/21 10:30 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 13:18 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 13:18 1Trichloroethene83.8 5.00 ug/L 11/18/21 13:18 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 13:18 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 13:18 1Vinyl chloride 15.9 5.00 ug/L 11/18/21 13:18 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 13:18 1o-Xylene ND 5.00 ug/L 11/18/21 13:18 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)96 52 -151 11/18/21 13:18 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)98 11/18/21 13:18 153-124 4-Bromofluorobenzene (Surr)95 11/18/21 13:18 149-118 Dibromofluoromethane (Surr)96 11/18/21 13:18 160-132 Lab Sample ID: 180-129668-7Client Sample ID: MW-18I Matrix: WaterDate Collected: 11/04/21 11:25 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 6.26 1.00 0.300 ug/L 11/11/21 22:00 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 95 50 -150 11/11/21 22:00 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 11/11/21 22:00 150-150 4-Bromofluorobenzene 102 11/11/21 22:00 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 13:41 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 13:41 1BenzeneND 5.00 ug/L 11/18/21 13:41 1ChlorobromomethaneND 5.00 ug/L 11/18/21 13:41 1DichlorobromomethaneND 5.00 ug/L 11/18/21 13:41 1BromoformND 5.00 ug/L 11/18/21 13:41 1BromomethaneND 5.00 ug/L 11/18/21 13:41 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 13:41 1Carbon disulfide ND 5.00 ug/L 11/18/21 13:41 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 13:41 1ChlorobenzeneND 5.00 ug/L 11/18/21 13:41 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 13:41 1ChloroethaneND 5.00 ug/L 11/18/21 13:41 1ChloroformND 5.00 ug/L 11/18/21 13:41 1ChloromethaneND 5.00 ug/L 11/18/21 13:41 1CyclohexaneND 5.00 ug/L 11/18/21 13:41 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 13:41 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 13:41 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 13:41 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 13:41 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 13:41 11,1-Dichloroethane 11.7 Eurofins TestAmerica, Pittsburgh Page 85 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-7Client Sample ID: MW-18I Matrix: WaterDate Collected: 11/04/21 11:25 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2-Dichloroethane ND 5.00 ug/L 11/18/21 13:41 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 13:41 1cis-1,2-Dichloroethene 7.07 5.00 ug/L 11/18/21 13:41 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 13:41 11,1-Dichloroethene ND 5.00 ug/L 11/18/21 13:41 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 13:41 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 13:41 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 13:41 11,4-Dioxane ND 5.00 ug/L 11/18/21 13:41 1EthylbenzeneND 5.00 ug/L 11/18/21 13:41 12-Hexanone ND 5.00 ug/L 11/18/21 13:41 1IsopropylbenzeneND 25.0 ug/L 11/18/21 13:41 1Methyl acetate ND 5.00 ug/L 11/18/21 13:41 1MethylcyclohexaneND 5.00 ug/L 11/18/21 13:41 1Methylene Chloride ND 5.00 ug/L 11/18/21 13:41 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 13:41 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 13:41 1StyreneND 5.00 ug/L 11/18/21 13:41 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 13:41 1TetrachloroetheneND 5.00 ug/L 11/18/21 13:41 1TolueneND 5.00 ug/L 11/18/21 13:41 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 13:41 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 13:41 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 13:41 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 13:41 1TrichloroetheneND 5.00 ug/L 11/18/21 13:41 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 13:41 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 13:41 1Vinyl chloride ND 5.00 ug/L 11/18/21 13:41 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 13:41 1o-Xylene ND 5.00 ug/L 11/18/21 13:41 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)99 52 -151 11/18/21 13:41 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 11/18/21 13:41 153-124 4-Bromofluorobenzene (Surr)99 11/18/21 13:41 149-118 Dibromofluoromethane (Surr)100 11/18/21 13:41 160-132 Lab Sample ID: 180-129668-8Client Sample ID: MW-12 Matrix: WaterDate Collected: 11/04/21 12:30 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/16/21 20:35 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 86 50 -150 11/16/21 20:35 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/16/21 20:35 150-150 4-Bromofluorobenzene 106 11/16/21 20:35 150-150 Eurofins TestAmerica, Pittsburgh Page 86 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-8Client Sample ID: MW-12 Matrix: WaterDate Collected: 11/04/21 12:30 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 14:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 14:04 1BenzeneND 5.00 ug/L 11/18/21 14:04 1ChlorobromomethaneND 5.00 ug/L 11/18/21 14:04 1DichlorobromomethaneND 5.00 ug/L 11/18/21 14:04 1BromoformND 5.00 ug/L 11/18/21 14:04 1BromomethaneND 5.00 ug/L 11/18/21 14:04 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 14:04 1Carbon disulfide ND 5.00 ug/L 11/18/21 14:04 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 14:04 1ChlorobenzeneND 5.00 ug/L 11/18/21 14:04 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 14:04 1ChloroethaneND 5.00 ug/L 11/18/21 14:04 1ChloroformND 5.00 ug/L 11/18/21 14:04 1ChloromethaneND 5.00 ug/L 11/18/21 14:04 1CyclohexaneND 5.00 ug/L 11/18/21 14:04 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 14:04 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 14:04 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 14:04 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 14:04 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 14:04 11,1-Dichloroethane ND 5.00 ug/L 11/18/21 14:04 11,2-Dichloroethane ND 5.00 ug/L 11/18/21 14:04 1cis-1,2-Dichloroethene 46.7 5.00 ug/L 11/18/21 14:04 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 14:04 11,1-Dichloroethene ND 5.00 ug/L 11/18/21 14:04 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 14:04 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 14:04 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 14:04 11,4-Dioxane ND 5.00 ug/L 11/18/21 14:04 1EthylbenzeneND 5.00 ug/L 11/18/21 14:04 12-Hexanone ND 5.00 ug/L 11/18/21 14:04 1IsopropylbenzeneND 25.0 ug/L 11/18/21 14:04 1Methyl acetate ND 5.00 ug/L 11/18/21 14:04 1MethylcyclohexaneND 5.00 ug/L 11/18/21 14:04 1Methylene Chloride ND 5.00 ug/L 11/18/21 14:04 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 14:04 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 14:04 1StyreneND 5.00 ug/L 11/18/21 14:04 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 14:04 1TetrachloroetheneND 5.00 ug/L 11/18/21 14:04 1TolueneND 5.00 ug/L 11/18/21 14:04 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 14:04 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 14:04 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 14:04 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 14:04 1TrichloroetheneND 5.00 ug/L 11/18/21 14:04 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 14:04 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 14:04 1Vinyl chloride ND Eurofins TestAmerica, Pittsburgh Page 87 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-8Client Sample ID: MW-12 Matrix: WaterDate Collected: 11/04/21 12:30 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 14:04 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 14:04 1o-Xylene ND 5.00 ug/L 11/18/21 14:04 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)97 52 -151 11/18/21 14:04 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)98 11/18/21 14:04 153-124 4-Bromofluorobenzene (Surr)97 11/18/21 14:04 149-118 Dibromofluoromethane (Surr)98 11/18/21 14:04 160-132 Lab Sample ID: 180-129668-9Client Sample ID: MW-12I Matrix: WaterDate Collected: 11/04/21 13:05 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 4.41 1.00 0.300 ug/L 11/16/21 21:00 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 83 50 -150 11/16/21 21:00 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/16/21 21:00 150-150 4-Bromofluorobenzene 104 11/16/21 21:00 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 14:27 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 14:27 1BenzeneND 5.00 ug/L 11/18/21 14:27 1ChlorobromomethaneND 5.00 ug/L 11/18/21 14:27 1DichlorobromomethaneND 5.00 ug/L 11/18/21 14:27 1BromoformND 5.00 ug/L 11/18/21 14:27 1BromomethaneND 5.00 ug/L 11/18/21 14:27 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 14:27 1Carbon disulfide ND 5.00 ug/L 11/18/21 14:27 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 14:27 1ChlorobenzeneND 5.00 ug/L 11/18/21 14:27 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 14:27 1ChloroethaneND 5.00 ug/L 11/18/21 14:27 1ChloroformND 5.00 ug/L 11/18/21 14:27 1ChloromethaneND 5.00 ug/L 11/18/21 14:27 1CyclohexaneND 5.00 ug/L 11/18/21 14:27 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 14:27 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 14:27 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 14:27 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 14:27 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 14:27 11,1-Dichloroethane 9.12 5.00 ug/L 11/18/21 14:27 11,2-Dichloroethane 62.4 5.00 ug/L 11/18/21 14:27 1cis-1,2-Dichloroethene 297 E 5.00 ug/L 11/18/21 14:27 1trans-1,2-Dichloroethene 6.51 5.00 ug/L 11/18/21 14:27 11,1-Dichloroethene 12.2 5.00 ug/L 11/18/21 14:27 11,2-Dichloropropane ND Eurofins TestAmerica, Pittsburgh Page 88 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-9Client Sample ID: MW-12I Matrix: WaterDate Collected: 11/04/21 13:05 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 14:27 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 14:27 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 14:27 11,4-Dioxane ND 5.00 ug/L 11/18/21 14:27 1EthylbenzeneND 5.00 ug/L 11/18/21 14:27 12-Hexanone ND 5.00 ug/L 11/18/21 14:27 1IsopropylbenzeneND 25.0 ug/L 11/18/21 14:27 1Methyl acetate ND 5.00 ug/L 11/18/21 14:27 1MethylcyclohexaneND 5.00 ug/L 11/18/21 14:27 1Methylene Chloride ND 5.00 ug/L 11/18/21 14:27 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 14:27 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 14:27 1StyreneND 5.00 ug/L 11/18/21 14:27 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 14:27 1TetrachloroetheneND 5.00 ug/L 11/18/21 14:27 1TolueneND 5.00 ug/L 11/18/21 14:27 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 14:27 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 14:27 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 14:27 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 14:27 1Trichloroethene36.6 5.00 ug/L 11/18/21 14:27 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 14:27 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 14:27 1Vinyl chloride ND 5.00 ug/L 11/18/21 14:27 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 14:27 1o-Xylene ND 5.00 ug/L 11/18/21 14:27 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)95 52 -151 11/18/21 14:27 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)95 11/18/21 14:27 153-124 4-Bromofluorobenzene (Surr)96 11/18/21 14:27 149-118 Dibromofluoromethane (Surr)96 11/18/21 14:27 160-132 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL RL MDL Acetone ND H 200 ug/L 11/19/21 09:04 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 50.0 ug/L 11/19/21 09:04 10BenzeneND H 50.0 ug/L 11/19/21 09:04 10ChlorobromomethaneND H 50.0 ug/L 11/19/21 09:04 10DichlorobromomethaneND H 50.0 ug/L 11/19/21 09:04 10BromoformND H 50.0 ug/L 11/19/21 09:04 10BromomethaneND H 50.0 ug/L 11/19/21 09:04 102-Butanone (MEK)ND H 50.0 ug/L 11/19/21 09:04 10Carbon disulfide ND H 50.0 ug/L 11/19/21 09:04 10Carbon tetrachloride ND H 50.0 ug/L 11/19/21 09:04 10ChlorobenzeneND H 50.0 ug/L 11/19/21 09:04 10ChlorodibromomethaneND H 50.0 ug/L 11/19/21 09:04 10ChloroethaneND H 50.0 ug/L 11/19/21 09:04 10ChloroformND H 50.0 ug/L 11/19/21 09:04 10ChloromethaneND H 50.0 ug/L 11/19/21 09:04 10CyclohexaneND H Eurofins TestAmerica, Pittsburgh Page 89 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-9Client Sample ID: MW-12I Matrix: WaterDate Collected: 11/04/21 13:05 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS - DL (Continued) RL MDL 1,2-Dibromo-3-Chloropropane ND H 50.0 ug/L 11/19/21 09:04 10 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 50.0 ug/L 11/19/21 09:04 101,2-Dichlorobenzene ND H 50.0 ug/L 11/19/21 09:04 101,3-Dichlorobenzene ND H 50.0 ug/L 11/19/21 09:04 101,4-Dichlorobenzene ND H 50.0 ug/L 11/19/21 09:04 10DichlorodifluoromethaneND H 50.0 ug/L 11/19/21 09:04 101,1-Dichloroethane ND H 50.0 ug/L 11/19/21 09:04 101,2-Dichloroethane 75.6 H 50.0 ug/L 11/19/21 09:04 10cis-1,2-Dichloroethene 383 H 50.0 ug/L 11/19/21 09:04 10trans-1,2-Dichloroethene ND H 50.0 ug/L 11/19/21 09:04 101,1-Dichloroethene ND H 50.0 ug/L 11/19/21 09:04 101,2-Dichloropropane ND H 50.0 ug/L 11/19/21 09:04 10cis-1,3-Dichloropropene ND H 50.0 ug/L 11/19/21 09:04 10trans-1,3-Dichloropropene ND H 10000 ug/L 11/19/21 09:04 101,4-Dioxane ND H 50.0 ug/L 11/19/21 09:04 10EthylbenzeneND H 50.0 ug/L 11/19/21 09:04 102-Hexanone ND H 50.0 ug/L 11/19/21 09:04 10IsopropylbenzeneND H 250 ug/L 11/19/21 09:04 10Methyl acetate ND H 50.0 ug/L 11/19/21 09:04 10MethylcyclohexaneND H 50.0 ug/L 11/19/21 09:04 10Methylene Chloride ND H 50.0 ug/L 11/19/21 09:04 104-Methyl-2-pentanone (MIBK)ND H 50.0 ug/L 11/19/21 09:04 10Methyl tert-butyl ether ND H 50.0 ug/L 11/19/21 09:04 10StyreneND H 50.0 ug/L 11/19/21 09:04 101,1,2,2-Tetrachloroethane ND H 50.0 ug/L 11/19/21 09:04 10TetrachloroetheneND H 50.0 ug/L 11/19/21 09:04 10TolueneND H 50.0 ug/L 11/19/21 09:04 101,2,3-Trichlorobenzene ND H 50.0 ug/L 11/19/21 09:04 101,2,4-Trichlorobenzene ND H 50.0 ug/L 11/19/21 09:04 101,1,1-Trichloroethane ND H 50.0 ug/L 11/19/21 09:04 101,1,2-Trichloroethane ND H 50.0 ug/L 11/19/21 09:04 10TrichloroetheneND H 50.0 ug/L 11/19/21 09:04 10TrichlorofluoromethaneND H 50.0 ug/L 11/19/21 09:04 101,1,2-Trichlorotrifluoroethane ND H 50.0 ug/L 11/19/21 09:04 10Vinyl chloride ND H 50.0 ug/L 11/19/21 09:04 10m-Xylene & p-Xylene ND H 50.0 ug/L 11/19/21 09:04 10o-Xylene ND H 50.0 ug/L 11/19/21 09:04 101,2-Dibromoethane ND H 1,2-Dichloroethane-d4 (Surr)97 52 -151 11/19/21 09:04 10 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)103 11/19/21 09:04 1053-124 4-Bromofluorobenzene (Surr)93 11/19/21 09:04 1049-118 Dibromofluoromethane (Surr)98 11/19/21 09:04 1060-132 Eurofins TestAmerica, Pittsburgh Page 90 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-10Client Sample ID: MW-13I Matrix: WaterDate Collected: 11/04/21 14:00 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 3.80 1.00 0.300 ug/L 11/16/21 21:25 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 89 50 -150 11/16/21 21:25 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/16/21 21:25 150-150 4-Bromofluorobenzene 106 11/16/21 21:25 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 14:50 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 14:50 1BenzeneND 5.00 ug/L 11/18/21 14:50 1ChlorobromomethaneND 5.00 ug/L 11/18/21 14:50 1DichlorobromomethaneND 5.00 ug/L 11/18/21 14:50 1BromoformND 5.00 ug/L 11/18/21 14:50 1BromomethaneND 5.00 ug/L 11/18/21 14:50 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 14:50 1Carbon disulfide ND 5.00 ug/L 11/18/21 14:50 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 14:50 1ChlorobenzeneND 5.00 ug/L 11/18/21 14:50 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 14:50 1ChloroethaneND 5.00 ug/L 11/18/21 14:50 1ChloroformND 5.00 ug/L 11/18/21 14:50 1ChloromethaneND 5.00 ug/L 11/18/21 14:50 1CyclohexaneND 5.00 ug/L 11/18/21 14:50 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 14:50 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 14:50 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 14:50 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 14:50 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 14:50 11,1-Dichloroethane 10.9 5.00 ug/L 11/18/21 14:50 11,2-Dichloroethane ND 5.00 ug/L 11/18/21 14:50 1cis-1,2-Dichloroethene 159 5.00 ug/L 11/18/21 14:50 1trans-1,2-Dichloroethene 8.59 5.00 ug/L 11/18/21 14:50 11,1-Dichloroethene 7.03 5.00 ug/L 11/18/21 14:50 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 14:50 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 14:50 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 14:50 11,4-Dioxane ND 5.00 ug/L 11/18/21 14:50 1EthylbenzeneND 5.00 ug/L 11/18/21 14:50 12-Hexanone ND 5.00 ug/L 11/18/21 14:50 1IsopropylbenzeneND 25.0 ug/L 11/18/21 14:50 1Methyl acetate ND 5.00 ug/L 11/18/21 14:50 1MethylcyclohexaneND 5.00 ug/L 11/18/21 14:50 1Methylene Chloride ND 5.00 ug/L 11/18/21 14:50 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 14:50 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 14:50 1StyreneND 5.00 ug/L 11/18/21 14:50 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 14:50 1Tetrachloroethene27.2 5.00 ug/L 11/18/21 14:50 1TolueneND Eurofins TestAmerica, Pittsburgh Page 91 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-10Client Sample ID: MW-13I Matrix: WaterDate Collected: 11/04/21 14:00 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 14:50 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 14:50 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 14:50 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 14:50 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 14:50 1Trichloroethene100 5.00 ug/L 11/18/21 14:50 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 14:50 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 14:50 1Vinyl chloride ND 5.00 ug/L 11/18/21 14:50 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 14:50 1o-Xylene ND 5.00 ug/L 11/18/21 14:50 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)96 52 -151 11/18/21 14:50 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)97 11/18/21 14:50 153-124 4-Bromofluorobenzene (Surr)96 11/18/21 14:50 149-118 Dibromofluoromethane (Surr)96 11/18/21 14:50 160-132 Lab Sample ID: 180-129668-11Client Sample ID: MW-13I-c Matrix: WaterDate Collected: 11/04/21 15:00 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/16/21 21:50 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 87 50 -150 11/16/21 21:50 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 11/16/21 21:50 150-150 4-Bromofluorobenzene 105 11/16/21 21:50 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 15:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 15:14 1BenzeneND 5.00 ug/L 11/18/21 15:14 1ChlorobromomethaneND 5.00 ug/L 11/18/21 15:14 1DichlorobromomethaneND 5.00 ug/L 11/18/21 15:14 1BromoformND 5.00 ug/L 11/18/21 15:14 1BromomethaneND 5.00 ug/L 11/18/21 15:14 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 15:14 1Carbon disulfide ND 5.00 ug/L 11/18/21 15:14 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 15:14 1ChlorobenzeneND 5.00 ug/L 11/18/21 15:14 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 15:14 1ChloroethaneND 5.00 ug/L 11/18/21 15:14 1ChloroformND 5.00 ug/L 11/18/21 15:14 1ChloromethaneND 5.00 ug/L 11/18/21 15:14 1CyclohexaneND 5.00 ug/L 11/18/21 15:14 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 15:14 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 15:14 11,3-Dichlorobenzene ND Eurofins TestAmerica, Pittsburgh Page 92 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-11Client Sample ID: MW-13I-c Matrix: WaterDate Collected: 11/04/21 15:00 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 15:14 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 15:14 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 15:14 11,1-Dichloroethane ND 5.00 ug/L 11/18/21 15:14 11,2-Dichloroethane ND 5.00 ug/L 11/18/21 15:14 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 15:14 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 15:14 11,1-Dichloroethene ND 5.00 ug/L 11/18/21 15:14 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 15:14 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 15:14 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 15:14 11,4-Dioxane ND 5.00 ug/L 11/18/21 15:14 1EthylbenzeneND 5.00 ug/L 11/18/21 15:14 12-Hexanone ND 5.00 ug/L 11/18/21 15:14 1IsopropylbenzeneND 25.0 ug/L 11/18/21 15:14 1Methyl acetate ND 5.00 ug/L 11/18/21 15:14 1MethylcyclohexaneND 5.00 ug/L 11/18/21 15:14 1Methylene Chloride ND 5.00 ug/L 11/18/21 15:14 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 15:14 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 15:14 1StyreneND 5.00 ug/L 11/18/21 15:14 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 15:14 1TetrachloroetheneND 5.00 ug/L 11/18/21 15:14 1TolueneND 5.00 ug/L 11/18/21 15:14 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 15:14 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 15:14 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 15:14 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 15:14 1TrichloroetheneND 5.00 ug/L 11/18/21 15:14 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 15:14 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 15:14 1Vinyl chloride ND 5.00 ug/L 11/18/21 15:14 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 15:14 1o-Xylene ND 5.00 ug/L 11/18/21 15:14 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)96 52 -151 11/18/21 15:14 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)96 11/18/21 15:14 153-124 4-Bromofluorobenzene (Surr)94 11/18/21 15:14 149-118 Dibromofluoromethane (Surr)98 11/18/21 15:14 160-132 Lab Sample ID: 180-129668-12Client Sample ID: MW-13 Matrix: WaterDate Collected: 11/04/21 14:30 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/16/21 17:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Eurofins TestAmerica, Pittsburgh Page 93 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-12Client Sample ID: MW-13 Matrix: WaterDate Collected: 11/04/21 14:30 Date Received: 11/06/21 09:30 Dibromofluoromethane 83 50 -150 11/16/21 17:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)101 11/16/21 17:40 150-150 4-Bromofluorobenzene 105 11/16/21 17:40 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 08:38 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 08:38 1BenzeneND 5.00 ug/L 11/18/21 08:38 1ChlorobromomethaneND 5.00 ug/L 11/18/21 08:38 1DichlorobromomethaneND 5.00 ug/L 11/18/21 08:38 1BromoformND 5.00 ug/L 11/18/21 08:38 1BromomethaneND 5.00 ug/L 11/18/21 08:38 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 08:38 1Carbon disulfide ND 5.00 ug/L 11/18/21 08:38 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 08:38 1ChlorobenzeneND 5.00 ug/L 11/18/21 08:38 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 08:38 1ChloroethaneND 5.00 ug/L 11/18/21 08:38 1ChloroformND 5.00 ug/L 11/18/21 08:38 1ChloromethaneND 5.00 ug/L 11/18/21 08:38 1CyclohexaneND 5.00 ug/L 11/18/21 08:38 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 08:38 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 08:38 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 08:38 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 08:38 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 08:38 11,1-Dichloroethane ND 5.00 ug/L 11/18/21 08:38 11,2-Dichloroethane ND 5.00 ug/L 11/18/21 08:38 1cis-1,2-Dichloroethene 12.5 5.00 ug/L 11/18/21 08:38 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 08:38 11,1-Dichloroethene ND 5.00 ug/L 11/18/21 08:38 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 08:38 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 08:38 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 08:38 11,4-Dioxane ND 5.00 ug/L 11/18/21 08:38 1EthylbenzeneND 5.00 ug/L 11/18/21 08:38 12-Hexanone ND 5.00 ug/L 11/18/21 08:38 1IsopropylbenzeneND 25.0 ug/L 11/18/21 08:38 1Methyl acetate ND 5.00 ug/L 11/18/21 08:38 1MethylcyclohexaneND 5.00 ug/L 11/18/21 08:38 1Methylene Chloride ND 5.00 ug/L 11/18/21 08:38 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 08:38 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 08:38 1StyreneND 5.00 ug/L 11/18/21 08:38 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 08:38 1TetrachloroetheneND 5.00 ug/L 11/18/21 08:38 1TolueneND 5.00 ug/L 11/18/21 08:38 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 08:38 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 08:38 11,1,1-Trichloroethane ND Eurofins TestAmerica, Pittsburgh Page 94 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-12Client Sample ID: MW-13 Matrix: WaterDate Collected: 11/04/21 14:30 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 08:38 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 08:38 1TrichloroetheneND 5.00 ug/L 11/18/21 08:38 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 08:38 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 08:38 1Vinyl chloride ND 5.00 ug/L 11/18/21 08:38 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 08:38 1o-Xylene ND 5.00 ug/L 11/18/21 08:38 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)91 52 -151 11/18/21 08:38 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)95 11/18/21 08:38 153-124 4-Bromofluorobenzene (Surr)91 11/18/21 08:38 149-118 Dibromofluoromethane (Surr)95 11/18/21 08:38 160-132 Lab Sample ID: 180-129668-13Client Sample ID: MW-8 Matrix: WaterDate Collected: 11/04/21 15:00 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 6.27 1.00 0.300 ug/L 11/16/21 22:15 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 87 50 -150 11/16/21 22:15 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)104 11/16/21 22:15 150-150 4-Bromofluorobenzene 105 11/16/21 22:15 150-150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 15:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 15:37 1BenzeneND 5.00 ug/L 11/18/21 15:37 1ChlorobromomethaneND 5.00 ug/L 11/18/21 15:37 1DichlorobromomethaneND 5.00 ug/L 11/18/21 15:37 1BromoformND 5.00 ug/L 11/18/21 15:37 1BromomethaneND 5.00 ug/L 11/18/21 15:37 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 15:37 1Carbon disulfide ND 5.00 ug/L 11/18/21 15:37 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 15:37 1ChlorobenzeneND 5.00 ug/L 11/18/21 15:37 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 15:37 1ChloroethaneND 5.00 ug/L 11/18/21 15:37 1ChloroformND 5.00 ug/L 11/18/21 15:37 1ChloromethaneND 5.00 ug/L 11/18/21 15:37 1CyclohexaneND 5.00 ug/L 11/18/21 15:37 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 15:37 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 15:37 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 15:37 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 15:37 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 15:37 11,1-Dichloroethane 34.2 Eurofins TestAmerica, Pittsburgh Page 95 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-13Client Sample ID: MW-8 Matrix: WaterDate Collected: 11/04/21 15:00 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1,2-Dichloroethane 5.26 5.00 ug/L 11/18/21 15:37 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 15:37 1cis-1,2-Dichloroethene 245 5.00 ug/L 11/18/21 15:37 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 15:37 11,1-Dichloroethene 9.66 5.00 ug/L 11/18/21 15:37 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 15:37 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 15:37 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 15:37 11,4-Dioxane ND 5.00 ug/L 11/18/21 15:37 1EthylbenzeneND 5.00 ug/L 11/18/21 15:37 12-Hexanone ND 5.00 ug/L 11/18/21 15:37 1IsopropylbenzeneND 25.0 ug/L 11/18/21 15:37 1Methyl acetate ND 5.00 ug/L 11/18/21 15:37 1MethylcyclohexaneND 5.00 ug/L 11/18/21 15:37 1Methylene Chloride ND 5.00 ug/L 11/18/21 15:37 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 15:37 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 15:37 1StyreneND 5.00 ug/L 11/18/21 15:37 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 15:37 1TetrachloroetheneND 5.00 ug/L 11/18/21 15:37 1TolueneND 5.00 ug/L 11/18/21 15:37 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 15:37 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 15:37 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 15:37 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 15:37 1Trichloroethene73.3 5.00 ug/L 11/18/21 15:37 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 15:37 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 15:37 1Vinyl chloride 13.9 5.00 ug/L 11/18/21 15:37 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 15:37 1o-Xylene ND 5.00 ug/L 11/18/21 15:37 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)95 52 -151 11/18/21 15:37 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)98 11/18/21 15:37 153-124 4-Bromofluorobenzene (Surr)97 11/18/21 15:37 149-118 Dibromofluoromethane (Surr)97 11/18/21 15:37 160-132 Lab Sample ID: 180-129668-14Client Sample ID: MW-8-A Matrix: WaterDate Collected: 11/04/21 15:00 Date Received: 11/06/21 09:30 Method: 8260D SIM - Volatile Organic Compounds (GC/MS) RL MDL 1,4-Dioxane 6.28 1.00 0.300 ug/L 11/16/21 22:40 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier Dibromofluoromethane 87 50 -150 11/16/21 22:40 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)102 11/16/21 22:40 150-150 4-Bromofluorobenzene 104 11/16/21 22:40 150-150 Eurofins TestAmerica, Pittsburgh Page 96 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-14Client Sample ID: MW-8-A Matrix: WaterDate Collected: 11/04/21 15:00 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS RL MDL Acetone ND 20.0 ug/L 11/18/21 09:02 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 09:02 1BenzeneND 5.00 ug/L 11/18/21 09:02 1ChlorobromomethaneND 5.00 ug/L 11/18/21 09:02 1DichlorobromomethaneND 5.00 ug/L 11/18/21 09:02 1BromoformND 5.00 ug/L 11/18/21 09:02 1BromomethaneND 5.00 ug/L 11/18/21 09:02 12-Butanone (MEK)ND 5.00 ug/L 11/18/21 09:02 1Carbon disulfide ND 5.00 ug/L 11/18/21 09:02 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 09:02 1ChlorobenzeneND 5.00 ug/L 11/18/21 09:02 1ChlorodibromomethaneND 5.00 ug/L 11/18/21 09:02 1ChloroethaneND 5.00 ug/L 11/18/21 09:02 1ChloroformND 5.00 ug/L 11/18/21 09:02 1ChloromethaneND 5.00 ug/L 11/18/21 09:02 1CyclohexaneND 5.00 ug/L 11/18/21 09:02 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/18/21 09:02 11,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 09:02 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 09:02 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 09:02 1DichlorodifluoromethaneND 5.00 ug/L 11/18/21 09:02 11,1-Dichloroethane 32.6 5.00 ug/L 11/18/21 09:02 11,2-Dichloroethane 5.02 5.00 ug/L 11/18/21 09:02 1cis-1,2-Dichloroethene 228 5.00 ug/L 11/18/21 09:02 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 09:02 11,1-Dichloroethene 9.39 5.00 ug/L 11/18/21 09:02 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 09:02 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 09:02 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 09:02 11,4-Dioxane ND 5.00 ug/L 11/18/21 09:02 1EthylbenzeneND 5.00 ug/L 11/18/21 09:02 12-Hexanone ND 5.00 ug/L 11/18/21 09:02 1IsopropylbenzeneND 25.0 ug/L 11/18/21 09:02 1Methyl acetate ND 5.00 ug/L 11/18/21 09:02 1MethylcyclohexaneND 5.00 ug/L 11/18/21 09:02 1Methylene Chloride ND 5.00 ug/L 11/18/21 09:02 14-Methyl-2-pentanone (MIBK)ND 5.00 ug/L 11/18/21 09:02 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 09:02 1StyreneND 5.00 ug/L 11/18/21 09:02 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 09:02 1TetrachloroetheneND 5.00 ug/L 11/18/21 09:02 1TolueneND 5.00 ug/L 11/18/21 09:02 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 09:02 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 09:02 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 09:02 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 09:02 1Trichloroethene71.4 5.00 ug/L 11/18/21 09:02 1TrichlorofluoromethaneND 5.00 ug/L 11/18/21 09:02 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 09:02 1Vinyl chloride 13.3 Eurofins TestAmerica, Pittsburgh Page 97 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Client Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Lab Sample ID: 180-129668-14Client Sample ID: MW-8-A Matrix: WaterDate Collected: 11/04/21 15:00 Date Received: 11/06/21 09:30 Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 09:02 1 Analyte Dil FacAnalyzedPreparedUnit DResult Qualifier 5.00 ug/L 11/18/21 09:02 1o-Xylene ND 5.00 ug/L 11/18/21 09:02 11,2-Dibromoethane ND 1,2-Dichloroethane-d4 (Surr)93 52 -151 11/18/21 09:02 1 Surrogate Dil FacAnalyzedPreparedQualifier Limits%Recovery Toluene-d8 (Surr)100 11/18/21 09:02 153-124 4-Bromofluorobenzene (Surr)97 11/18/21 09:02 149-118 Dibromofluoromethane (Surr)96 11/18/21 09:02 160-132 Eurofins TestAmerica, Pittsburgh Page 98 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) Client Sample ID: Method BlankLab Sample ID: MB 400-555304/12 Matrix: Water Prep Type: Total/NA Analysis Batch: 555304 RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/10/21 14:53 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier Dibromofluoromethane 94 50 -150 11/10/21 14:53 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 103 11/10/21 14:53 1Toluene-d8 (Surr)50 -150 105 11/10/21 14:53 14-Bromofluorobenzene 50 -150 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-555304/1003 Matrix: Water Prep Type: Total/NA Analysis Batch: 555304 1,4-Dioxane 10.0 9.112 ug/L 91 50 -150 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Dibromofluoromethane 50 -150 Surrogate 91 LCS LCS Qualifier Limits%Recovery 106Toluene-d8 (Surr)50 -150 1064-Bromofluorobenzene 50 -150 Client Sample ID: B-1Lab Sample ID: 180-129623-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 555304 1,4-Dioxane 4.75 10.0 13.18 ug/L 84 50 -150 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Dibromofluoromethane 50 -150 Surrogate 90 MS MS Qualifier Limits%Recovery 105Toluene-d8 (Surr)50 -150 1044-Bromofluorobenzene 50 -150 Client Sample ID: B-1Lab Sample ID: 180-129623-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 555304 1,4-Dioxane 4.75 10.0 14.72 ug/L 100 50 -150 11 50 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Dibromofluoromethane 50 -150 Surrogate 89 MSD MSD Qualifier Limits%Recovery 105Toluene-d8 (Surr)50 -150 1054-Bromofluorobenzene 50 -150 Eurofins TestAmerica, Pittsburgh Page 99 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-555446/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 555446 RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/11/21 12:18 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier Dibromofluoromethane 96 50 -150 11/11/21 12:18 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 101 11/11/21 12:18 1Toluene-d8 (Surr)50 -150 103 11/11/21 12:18 14-Bromofluorobenzene 50 -150 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-555446/1003 Matrix: Water Prep Type: Total/NA Analysis Batch: 555446 1,4-Dioxane 10.0 10.64 ug/L 106 50 -150 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Dibromofluoromethane 50 -150 Surrogate 92 LCS LCS Qualifier Limits%Recovery 105Toluene-d8 (Surr)50 -150 1044-Bromofluorobenzene 50 -150 Client Sample ID: Matrix SpikeLab Sample ID: 180-129621-D-13 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 555446 1,4-Dioxane ND 10.0 7.963 ug/L 80 50 -150 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Dibromofluoromethane 50 -150 Surrogate 92 MS MS Qualifier Limits%Recovery 104Toluene-d8 (Surr)50 -150 1034-Bromofluorobenzene 50 -150 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-129621-D-13 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 555446 1,4-Dioxane ND 10.0 9.146 ug/L 91 50 -150 14 50 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Dibromofluoromethane 50 -150 Surrogate 92 MSD MSD Qualifier Limits%Recovery 104Toluene-d8 (Surr)50 -150 1044-Bromofluorobenzene 50 -150 Eurofins TestAmerica, Pittsburgh Page 100 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: 8260D SIM - Volatile Organic Compounds (GC/MS) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 400-556104/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 556104 RL MDL 1,4-Dioxane ND 1.00 0.300 ug/L 11/16/21 16:54 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier Dibromofluoromethane 84 50 -150 11/16/21 16:54 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 101 11/16/21 16:54 1Toluene-d8 (Surr)50 -150 105 11/16/21 16:54 14-Bromofluorobenzene 50 -150 Client Sample ID: Lab Control SampleLab Sample ID: LCS 400-556104/1003 Matrix: Water Prep Type: Total/NA Analysis Batch: 556104 1,4-Dioxane 10.0 10.12 ug/L 101 50 -150 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Dibromofluoromethane 50 -150 Surrogate 87 LCS LCS Qualifier Limits%Recovery 103Toluene-d8 (Surr)50 -150 1044-Bromofluorobenzene 50 -150 Method: EPA 8260D - Volatile Organic Compounds by GC/MS Client Sample ID: Method BlankLab Sample ID: MB 180-379027/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 379027 RL MDL Acetone ND 20.0 ug/L 11/16/21 12:58 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 11/16/21 12:58 1Benzene ND 5.00 ug/L 11/16/21 12:58 1Chlorobromomethane ND 5.00 ug/L 11/16/21 12:58 1Dichlorobromomethane ND 5.00 ug/L 11/16/21 12:58 1Bromoform ND 5.00 ug/L 11/16/21 12:58 1Bromomethane ND 5.00 ug/L 11/16/21 12:58 12-Butanone (MEK) ND 5.00 ug/L 11/16/21 12:58 1Carbon disulfide ND 5.00 ug/L 11/16/21 12:58 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 12:58 1Chlorobenzene ND 5.00 ug/L 11/16/21 12:58 1Chlorodibromomethane ND 5.00 ug/L 11/16/21 12:58 1Chloroethane ND 5.00 ug/L 11/16/21 12:58 1Chloroform ND 5.00 ug/L 11/16/21 12:58 1Chloromethane ND 5.00 ug/L 11/16/21 12:58 1Cyclohexane ND 5.00 ug/L 11/16/21 12:58 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/16/21 12:58 11,2-Dichlorobenzene ND 5.00 ug/L 11/16/21 12:58 11,3-Dichlorobenzene ND 5.00 ug/L 11/16/21 12:58 11,4-Dichlorobenzene ND 5.00 ug/L 11/16/21 12:58 1Dichlorodifluoromethane ND 5.00 ug/L 11/16/21 12:58 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 12:58 11,2-Dichloroethane Eurofins TestAmerica, Pittsburgh Page 101 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-379027/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 379027 RL MDL cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 12:58 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 11/16/21 12:58 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 12:58 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 12:58 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 12:58 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 12:58 1trans-1,3-Dichloropropene ND 1000 ug/L 11/16/21 12:58 11,4-Dioxane ND 5.00 ug/L 11/16/21 12:58 1Ethylbenzene ND 5.00 ug/L 11/16/21 12:58 12-Hexanone ND 5.00 ug/L 11/16/21 12:58 1Isopropylbenzene ND 25.0 ug/L 11/16/21 12:58 1Methyl acetate ND 5.00 ug/L 11/16/21 12:58 1Methylcyclohexane ND 5.00 ug/L 11/16/21 12:58 1Methylene Chloride ND 5.00 ug/L 11/16/21 12:58 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 11/16/21 12:58 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 12:58 1Styrene ND 5.00 ug/L 11/16/21 12:58 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 12:58 1Tetrachloroethene ND 5.00 ug/L 11/16/21 12:58 1Toluene ND 5.00 ug/L 11/16/21 12:58 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/16/21 12:58 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/16/21 12:58 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 12:58 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 12:58 1Trichloroethene ND 5.00 ug/L 11/16/21 12:58 1Trichlorofluoromethane ND 5.00 ug/L 11/16/21 12:58 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 12:58 1Vinyl chloride ND 5.00 ug/L 11/16/21 12:58 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 12:58 1o-Xylene ND 5.00 ug/L 11/16/21 12:58 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)115 52 -151 11/16/21 12:58 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 93 11/16/21 12:58 1Toluene-d8 (Surr)53 -124 75 11/16/21 12:58 14-Bromofluorobenzene (Surr)49 -118 113 11/16/21 12:58 1Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-379027/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 379027 Acetone 10.0 10.52 J ug/L 105 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 10.0 9.632 ug/L 96 68 -122 Chlorobromomethane 10.0 10.42 ug/L 104 59 -133 Dichlorobromomethane 10.0 10.50 ug/L 105 63 -132 Bromoform 10.0 10.71 ug/L 107 31 -164 Bromomethane 10.0 8.423 ug/L 84 20 -170 Eurofins TestAmerica, Pittsburgh Page 102 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-379027/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 379027 2-Butanone (MEK)10.0 10.14 ug/L 101 35 -158 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Carbon disulfide 10.0 7.265 ug/L 73 32 -139 Carbon tetrachloride 10.0 10.20 ug/L 102 60 -135 Chlorobenzene 10.0 9.812 ug/L 98 72 -123 Chlorodibromomethane 10.0 10.45 ug/L 105 51 -144 Chloroethane 10.0 9.189 ug/L 92 10 -170 Chloroform 10.0 11.43 ug/L 114 62 -121 Chloromethane 10.0 12.23 ug/L 122 37 -170 1,2-Dibromo-3-Chloropropane 10.0 9.426 ug/L 94 10 -170 1,2-Dichlorobenzene 10.0 9.820 ug/L 98 68 -116 1,3-Dichlorobenzene 10.0 9.790 ug/L 98 70 -119 1,4-Dichlorobenzene 10.0 9.779 ug/L 98 74 -117 Dichlorodifluoromethane 10.0 9.537 ug/L 95 21 -165 1,1-Dichloroethane 10.0 8.704 ug/L 87 59 -125 1,2-Dichloroethane 10.0 11.12 ug/L 111 57 -149 cis-1,2-Dichloroethene 10.0 9.381 ug/L 94 64 -122 trans-1,2-Dichloroethene 10.0 8.476 ug/L 85 62 -126 1,1-Dichloroethene 10.0 7.849 ug/L 78 49 -132 1,2-Dichloropropane 10.0 9.752 ug/L 98 65 -129 cis-1,3-Dichloropropene 10.0 9.113 ug/L 91 53 -140 trans-1,3-Dichloropropene 10.0 9.688 ug/L 97 57 -137 Ethylbenzene 10.0 9.136 ug/L 91 66 -122 2-Hexanone 10.0 9.317 ug/L 93 38 -157 Isopropylbenzene 10.0 9.207 ug/L 92 54 -130 Methylene Chloride 10.0 9.983 ug/L 100 51 -137 4-Methyl-2-pentanone (MIBK)10.0 8.888 ug/L 89 29 -167 Methyl tert-butyl ether 10.0 8.833 ug/L 88 36 -141 Styrene 10.0 9.918 ug/L 99 68 -127 1,1,2,2-Tetrachloroethane 10.0 9.743 ug/L 97 47 -147 Tetrachloroethene 10.0 9.939 ug/L 99 60 -129 Toluene 10.0 9.466 ug/L 95 67 -128 1,2,3-Trichlorobenzene 10.0 10.34 ug/L 103 10 -170 1,2,4-Trichlorobenzene 10.0 9.097 ug/L 91 15 -169 1,1,1-Trichloroethane 10.0 9.877 ug/L 99 64 -133 1,1,2-Trichloroethane 10.0 10.06 ug/L 101 59 -137 Trichloroethene 10.0 9.623 ug/L 96 67 -121 Trichlorofluoromethane 10.0 12.81 ug/L 128 32 -157 Vinyl chloride 10.0 8.005 ug/L 80 47 -147 m-Xylene & p-Xylene 10.0 9.591 ug/L 96 61 -128 o-Xylene 10.0 9.360 ug/L 94 64 -120 1,2-Dibromoethane 10.0 9.877 ug/L 99 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 115 LCS LCS Qualifier Limits%Recovery 99Toluene-d8 (Surr)53 -124 1024-Bromofluorobenzene (Surr)49 -118 111Dibromofluoromethane (Surr)60 -132 Eurofins TestAmerica, Pittsburgh Page 103 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 180-129471-E-2 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 379027 Acetone ND 100 ND ug/L 97 29 -163 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 100 93.08 ug/L 93 68 -122 Chlorobromomethane ND 100 102.4 ug/L 102 59 -133 Dichlorobromomethane ND 100 103.7 ug/L 104 63 -132 Bromoform ND 100 105.2 ug/L 105 31 -164 Bromomethane ND 100 107.2 ug/L 107 20 -170 2-Butanone (MEK)ND 100 85.04 ug/L 85 35 -158 Carbon disulfide ND 100 92.30 ug/L 92 32 -139 Carbon tetrachloride ND 100 111.0 ug/L 111 60 -135 Chlorobenzene ND 100 91.27 ug/L 91 72 -123 Chlorodibromomethane ND 100 100.2 ug/L 100 51 -144 Chloroethane ND 100 118.4 ug/L 118 10 -170 Chloroform ND 100 114.6 ug/L 115 62 -121 Chloromethane ND 100 91.23 ug/L 91 37 -170 1,2-Dibromo-3-Chloropropane ND 100 87.09 ug/L 87 10 -170 1,2-Dichlorobenzene ND 100 95.76 ug/L 96 68 -116 1,3-Dichlorobenzene ND 100 96.27 ug/L 96 70 -119 1,4-Dichlorobenzene ND 100 97.11 ug/L 97 74 -117 Dichlorodifluoromethane ND 100 99.45 ug/L 99 21 -165 1,1-Dichloroethane ND 100 94.65 ug/L 95 59 -125 1,2-Dichloroethane ND 100 113.0 ug/L 113 57 -149 cis-1,2-Dichloroethene ND 100 97.58 ug/L 98 64 -122 trans-1,2-Dichloroethene ND 100 96.40 ug/L 96 62 -126 1,1-Dichloroethene ND 100 93.54 ug/L 94 49 -132 1,2-Dichloropropane ND 100 94.19 ug/L 94 65 -129 cis-1,3-Dichloropropene ND 100 87.19 ug/L 87 53 -140 trans-1,3-Dichloropropene ND 100 91.75 ug/L 92 57 -137 Ethylbenzene ND 100 88.18 ug/L 88 66 -122 2-Hexanone ND 100 78.41 ug/L 78 38 -157 Isopropylbenzene ND 100 87.53 ug/L 88 54 -130 Methylene Chloride ND 100 106.9 ug/L 107 51 -137 4-Methyl-2-pentanone (MIBK)ND 100 73.00 ug/L 73 29 -167 Methyl tert-butyl ether ND 100 90.74 ug/L 91 36 -141 Styrene ND 100 95.02 ug/L 95 68 -127 1,1,2,2-Tetrachloroethane ND 100 92.85 ug/L 93 47 -147 Tetrachloroethene ND 100 98.35 ug/L 98 60 -129 Toluene ND 100 89.15 ug/L 89 67 -128 1,2,3-Trichlorobenzene ND 100 96.91 ug/L 97 10 -170 1,2,4-Trichlorobenzene ND 100 89.88 ug/L 90 15 -169 1,1,1-Trichloroethane ND 100 107.1 ug/L 107 64 -133 1,1,2-Trichloroethane ND 100 92.40 ug/L 92 59 -137 Trichloroethene 63.7 100 154.8 ug/L 91 67 -121 Trichlorofluoromethane ND 100 155.4 ug/L 155 32 -157 Vinyl chloride ND 100 85.95 ug/L 86 47 -147 m-Xylene & p-Xylene ND 100 89.60 ug/L 90 61 -128 o-Xylene ND 100 89.11 ug/L 89 64 -120 1,2-Dibromoethane ND 100 90.76 ug/L 91 55 -146 Eurofins TestAmerica, Pittsburgh Page 104 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 180-129471-E-2 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 379027 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 118 MS MS Qualifier Limits%Recovery 96Toluene-d8 (Surr)53 -124 1024-Bromofluorobenzene (Surr)49 -118 113Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-129471-E-2 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 379027 Acetone ND 100 ND ug/L 95 29 -163 2 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 100 91.02 ug/L 91 68 -122 2 21 Chlorobromomethane ND 100 96.51 ug/L 97 59 -133 6 26 Dichlorobromomethane ND 100 103.0 ug/L 103 63 -132 1 24 Bromoform ND 100 111.3 ug/L 111 31 -164 6 35 Bromomethane ND 100 102.0 ug/L 102 20 -170 5 30 2-Butanone (MEK)ND 100 87.34 ug/L 87 35 -158 3 35 Carbon disulfide ND 100 88.17 ug/L 88 32 -139 5 25 Carbon tetrachloride ND 100 104.6 ug/L 105 60 -135 6 25 Chlorobenzene ND 100 96.50 ug/L 96 72 -123 6 19 Chlorodibromomethane ND 100 102.2 ug/L 102 51 -144 2 25 Chloroethane ND 100 118.5 ug/L 118 10 -170 0 29 Chloroform ND 100 108.0 ug/L 108 62 -121 6 22 Chloromethane ND 100 85.23 ug/L 85 37 -170 7 28 1,2-Dibromo-3-Chloropropane ND 100 91.79 ug/L 92 10 -170 5 35 1,2-Dichlorobenzene ND 100 97.26 ug/L 97 68 -116 2 20 1,3-Dichlorobenzene ND 100 95.72 ug/L 96 70 -119 1 18 1,4-Dichlorobenzene ND 100 95.02 ug/L 95 74 -117 2 17 Dichlorodifluoromethane ND 100 97.17 ug/L 97 21 -165 2 26 1,1-Dichloroethane ND 100 92.75 ug/L 93 59 -125 2 20 1,2-Dichloroethane ND 100 109.4 ug/L 109 57 -149 3 27 cis-1,2-Dichloroethene ND 100 94.54 ug/L 95 64 -122 3 22 trans-1,2-Dichloroethene ND 100 93.15 ug/L 93 62 -126 3 23 1,1-Dichloroethene ND 100 94.84 ug/L 95 49 -132 1 23 1,2-Dichloropropane ND 100 93.09 ug/L 93 65 -129 1 23 cis-1,3-Dichloropropene ND 100 85.14 ug/L 85 53 -140 2 26 trans-1,3-Dichloropropene ND 100 96.43 ug/L 96 57 -137 5 25 Ethylbenzene ND 100 90.16 ug/L 90 66 -122 2 22 2-Hexanone ND 100 83.20 ug/L 83 38 -157 6 35 Isopropylbenzene ND 100 88.66 ug/L 89 54 -130 1 22 Methylene Chloride ND 100 105.4 ug/L 105 51 -137 1 35 4-Methyl-2-pentanone (MIBK)ND 100 81.19 ug/L 81 29 -167 11 35 Methyl tert-butyl ether ND 100 92.48 ug/L 92 36 -141 2 35 Styrene ND 100 97.02 ug/L 97 68 -127 2 22 1,1,2,2-Tetrachloroethane ND 100 95.05 ug/L 95 47 -147 2 35 Tetrachloroethene ND 100 103.7 ug/L 104 60 -129 5 22 Toluene ND 100 93.13 ug/L 93 67 -128 4 22 1,2,3-Trichlorobenzene ND 100 99.77 ug/L 100 10 -170 3 35 Eurofins TestAmerica, Pittsburgh Page 105 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-129471-E-2 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 379027 1,2,4-Trichlorobenzene ND 100 89.04 ug/L 89 15 -169 1 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 1,1,1-Trichloroethane ND 100 99.72 ug/L 100 64 -133 7 22 1,1,2-Trichloroethane ND 100 100.0 ug/L 100 59 -137 8 29 Trichloroethene 63.7 100 158.2 ug/L 95 67 -121 2 23 Trichlorofluoromethane ND 100 121.7 ug/L 122 32 -157 24 35 Vinyl chloride ND 100 84.29 ug/L 84 47 -147 2 25 m-Xylene & p-Xylene ND 100 94.10 ug/L 94 61 -128 5 21 o-Xylene ND 100 91.02 ug/L 91 64 -120 2 23 1,2-Dibromoethane ND 100 94.83 ug/L 95 55 -146 4 30 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 115 MSD MSD Qualifier Limits%Recovery 101Toluene-d8 (Surr)53 -124 1034-Bromofluorobenzene (Surr)49 -118 108Dibromofluoromethane (Surr)60 -132 Client Sample ID: Method BlankLab Sample ID: MB 180-379033/10 Matrix: Water Prep Type: Total/NA Analysis Batch: 379033 RL MDL Acetone ND 20.0 ug/L 11/16/21 12:30 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 11/16/21 12:30 1Benzene ND 5.00 ug/L 11/16/21 12:30 1Chlorobromomethane ND 5.00 ug/L 11/16/21 12:30 1Dichlorobromomethane ND 5.00 ug/L 11/16/21 12:30 1Bromoform ND 5.00 ug/L 11/16/21 12:30 1Bromomethane ND 5.00 ug/L 11/16/21 12:30 12-Butanone (MEK) ND 5.00 ug/L 11/16/21 12:30 1Carbon disulfide ND 5.00 ug/L 11/16/21 12:30 1Carbon tetrachloride ND 5.00 ug/L 11/16/21 12:30 1Chlorobenzene ND 5.00 ug/L 11/16/21 12:30 1Chlorodibromomethane ND 5.00 ug/L 11/16/21 12:30 1Chloroethane ND 5.00 ug/L 11/16/21 12:30 1Chloroform ND 5.00 ug/L 11/16/21 12:30 1Chloromethane ND 5.00 ug/L 11/16/21 12:30 1Cyclohexane ND 5.00 ug/L 11/16/21 12:30 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/16/21 12:30 11,2-Dichlorobenzene ND 5.00 ug/L 11/16/21 12:30 11,3-Dichlorobenzene ND 5.00 ug/L 11/16/21 12:30 11,4-Dichlorobenzene ND 5.00 ug/L 11/16/21 12:30 1Dichlorodifluoromethane ND 5.00 ug/L 11/16/21 12:30 11,1-Dichloroethane ND 5.00 ug/L 11/16/21 12:30 11,2-Dichloroethane ND 5.00 ug/L 11/16/21 12:30 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 12:30 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/16/21 12:30 11,1-Dichloroethene ND 5.00 ug/L 11/16/21 12:30 11,2-Dichloropropane ND 5.00 ug/L 11/16/21 12:30 1cis-1,3-Dichloropropene Eurofins TestAmerica, Pittsburgh Page 106 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-379033/10 Matrix: Water Prep Type: Total/NA Analysis Batch: 379033 RL MDL trans-1,3-Dichloropropene ND 5.00 ug/L 11/16/21 12:30 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 1000 ug/L 11/16/21 12:30 11,4-Dioxane ND 5.00 ug/L 11/16/21 12:30 1Ethylbenzene ND 5.00 ug/L 11/16/21 12:30 12-Hexanone ND 5.00 ug/L 11/16/21 12:30 1Isopropylbenzene ND 25.0 ug/L 11/16/21 12:30 1Methyl acetate ND 5.00 ug/L 11/16/21 12:30 1Methylcyclohexane ND 5.00 ug/L 11/16/21 12:30 1Methylene Chloride ND 5.00 ug/L 11/16/21 12:30 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 11/16/21 12:30 1Methyl tert-butyl ether ND 5.00 ug/L 11/16/21 12:30 1Styrene ND 5.00 ug/L 11/16/21 12:30 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/16/21 12:30 1Tetrachloroethene ND 5.00 ug/L 11/16/21 12:30 1Toluene ND 5.00 ug/L 11/16/21 12:30 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/16/21 12:30 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/16/21 12:30 11,1,1-Trichloroethane ND 5.00 ug/L 11/16/21 12:30 11,1,2-Trichloroethane ND 5.00 ug/L 11/16/21 12:30 1Trichloroethene ND 5.00 ug/L 11/16/21 12:30 1Trichlorofluoromethane ND 5.00 ug/L 11/16/21 12:30 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/16/21 12:30 1Vinyl chloride ND 5.00 ug/L 11/16/21 12:30 1m-Xylene & p-Xylene ND 5.00 ug/L 11/16/21 12:30 1o-Xylene ND 5.00 ug/L 11/16/21 12:30 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)97 52 -151 11/16/21 12:30 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 81 11/16/21 12:30 1Toluene-d8 (Surr)53 -124 75 11/16/21 12:30 14-Bromofluorobenzene (Surr)49 -118 95 11/16/21 12:30 1Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-379033/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 379033 Acetone 40.0 28.69 ug/L 72 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 40.0 33.99 ug/L 85 68 -122 Chlorobromomethane 40.0 40.68 ug/L 102 59 -133 Dichlorobromomethane 40.0 36.99 ug/L 92 63 -132 Bromoform 40.0 43.32 ug/L 108 31 -164 Bromomethane 40.0 23.68 ug/L 59 20 -170 2-Butanone (MEK)40.0 21.89 ug/L 55 35 -158 Carbon disulfide 40.0 22.08 ug/L 55 32 -139 Carbon tetrachloride 40.0 39.28 ug/L 98 60 -135 Chlorobenzene 40.0 36.63 ug/L 92 72 -123 Chlorodibromomethane 40.0 42.26 ug/L 106 51 -144 Eurofins TestAmerica, Pittsburgh Page 107 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-379033/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 379033 Chloroethane 40.0 20.89 ug/L 52 10 -170 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Chloroform 40.0 35.34 ug/L 88 62 -121 Chloromethane 40.0 21.28 ug/L 53 37 -170 1,2-Dibromo-3-Chloropropane 40.0 37.31 ug/L 93 10 -170 1,2-Dichlorobenzene 40.0 39.36 ug/L 98 68 -116 1,3-Dichlorobenzene 40.0 39.74 ug/L 99 70 -119 1,4-Dichlorobenzene 40.0 39.36 ug/L 98 74 -117 Dichlorodifluoromethane 40.0 40.39 ug/L 101 21 -165 1,1-Dichloroethane 40.0 32.49 ug/L 81 59 -125 1,2-Dichloroethane 40.0 35.35 ug/L 88 57 -149 cis-1,2-Dichloroethene 40.0 35.29 ug/L 88 64 -122 trans-1,2-Dichloroethene 40.0 31.08 ug/L 78 62 -126 1,1-Dichloroethene 40.0 28.63 ug/L 72 49 -132 1,2-Dichloropropane 40.0 33.15 ug/L 83 65 -129 cis-1,3-Dichloropropene 40.0 37.06 ug/L 93 53 -140 trans-1,3-Dichloropropene 40.0 39.23 ug/L 98 57 -137 Ethylbenzene 40.0 35.33 ug/L 88 66 -122 2-Hexanone 40.0 31.81 E ug/L 80 38 -157 Isopropylbenzene 40.0 34.89 ug/L 87 54 -130 Methylene Chloride 40.0 29.17 ug/L 73 51 -137 4-Methyl-2-pentanone (MIBK)40.0 33.94 ug/L 85 29 -167 Methyl tert-butyl ether 40.0 32.17 ug/L 80 36 -141 Styrene 40.0 35.31 ug/L 88 68 -127 1,1,2,2-Tetrachloroethane 40.0 32.25 ug/L 81 47 -147 Tetrachloroethene 40.0 45.92 ug/L 115 60 -129 Toluene 40.0 37.20 ug/L 93 67 -128 1,2,3-Trichlorobenzene 40.0 68.18 E ug/L 170 10 -170 1,2,4-Trichlorobenzene 40.0 65.56 E ug/L 164 15 -169 1,1,1-Trichloroethane 40.0 37.65 ug/L 94 64 -133 1,1,2-Trichloroethane 40.0 38.33 ug/L 96 59 -137 Trichloroethene 40.0 41.57 ug/L 104 67 -121 Trichlorofluoromethane 40.0 36.87 ug/L 92 32 -157 Vinyl chloride 40.0 24.90 ug/L 62 47 -147 m-Xylene & p-Xylene 40.0 36.50 ug/L 91 61 -128 o-Xylene 40.0 35.54 ug/L 89 64 -120 1,2-Dibromoethane 40.0 40.48 ug/L 101 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 87 LCS LCS Qualifier Limits%Recovery 90Toluene-d8 (Surr)53 -124 924-Bromofluorobenzene (Surr)49 -118 94Dibromofluoromethane (Surr)60 -132 Eurofins TestAmerica, Pittsburgh Page 108 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 180-379033/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 379033 Acetone 40.0 28.93 ug/L 72 29 -163 1 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 40.0 36.14 ug/L 90 68 -122 6 21 Chlorobromomethane 40.0 38.54 ug/L 96 59 -133 5 26 Dichlorobromomethane 40.0 36.88 ug/L 92 63 -132 0 24 Bromoform 40.0 42.47 ug/L 106 31 -164 2 35 Bromomethane 40.0 26.79 ug/L 67 20 -170 12 30 2-Butanone (MEK)40.0 15.13 *1 ug/L 38 35 -158 36 35 Carbon disulfide 40.0 24.08 ug/L 60 32 -139 9 25 Carbon tetrachloride 40.0 44.73 ug/L 112 60 -135 13 25 Chlorobenzene 40.0 41.00 ug/L 102 72 -123 11 19 Chlorodibromomethane 40.0 40.46 ug/L 101 51 -144 4 25 Chloroethane 40.0 23.03 ug/L 58 10 -170 10 29 Chloroform 40.0 37.19 ug/L 93 62 -121 5 22 Chloromethane 40.0 28.00 ug/L 70 37 -170 27 28 1,2-Dibromo-3-Chloropropane 40.0 33.24 ug/L 83 10 -170 12 35 1,2-Dichlorobenzene 40.0 41.63 ug/L 104 68 -116 6 20 1,3-Dichlorobenzene 40.0 44.06 ug/L 110 70 -119 10 18 1,4-Dichlorobenzene 40.0 42.03 ug/L 105 74 -117 7 17 Dichlorodifluoromethane 40.0 52.41 ug/L 131 21 -165 26 26 1,1-Dichloroethane 40.0 32.53 ug/L 81 59 -125 0 20 1,2-Dichloroethane 40.0 33.20 ug/L 83 57 -149 6 27 cis-1,2-Dichloroethene 40.0 37.76 ug/L 94 64 -122 7 22 trans-1,2-Dichloroethene 40.0 36.91 ug/L 92 62 -126 17 23 1,1-Dichloroethene 40.0 33.57 ug/L 84 49 -132 16 23 1,2-Dichloropropane 40.0 32.01 ug/L 80 65 -129 3 23 cis-1,3-Dichloropropene 40.0 35.90 ug/L 90 53 -140 3 26 trans-1,3-Dichloropropene 40.0 36.65 ug/L 92 57 -137 7 25 Ethylbenzene 40.0 41.60 ug/L 104 66 -122 16 22 2-Hexanone 40.0 24.67 ug/L 62 38 -157 25 35 Isopropylbenzene 40.0 40.43 ug/L 101 54 -130 15 22 Methylene Chloride 40.0 34.46 ug/L 86 51 -137 17 35 4-Methyl-2-pentanone (MIBK)40.0 24.98 ug/L 62 29 -167 30 35 Methyl tert-butyl ether 40.0 30.08 ug/L 75 36 -141 7 35 Styrene 40.0 40.18 ug/L 100 68 -127 13 22 1,1,2,2-Tetrachloroethane 40.0 31.44 ug/L 79 47 -147 3 35 Tetrachloroethene 40.0 49.84 ug/L 125 60 -129 8 22 Toluene 40.0 39.35 ug/L 98 67 -128 6 22 1,2,3-Trichlorobenzene 40.0 90.17 E *+ ug/L 225 10 -170 28 35 1,2,4-Trichlorobenzene 40.0 80.94 E *+ ug/L 202 15 -169 21 35 1,1,1-Trichloroethane 40.0 43.10 ug/L 108 64 -133 13 22 1,1,2-Trichloroethane 40.0 34.25 ug/L 86 59 -137 11 29 Trichloroethene 40.0 45.52 ug/L 114 67 -121 9 23 Trichlorofluoromethane 40.0 41.02 ug/L 103 32 -157 11 35 Vinyl chloride 40.0 31.38 ug/L 78 47 -147 23 25 m-Xylene & p-Xylene 40.0 42.52 ug/L 106 61 -128 15 21 o-Xylene 40.0 41.52 ug/L 104 64 -120 16 23 1,2-Dibromoethane 40.0 34.70 ug/L 87 55 -146 15 30 Eurofins TestAmerica, Pittsburgh Page 109 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 180-379033/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 379033 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 80 LCSD LCSD Qualifier Limits%Recovery 93Toluene-d8 (Surr)53 -124 954-Bromofluorobenzene (Surr)49 -118 93Dibromofluoromethane (Surr)60 -132 Client Sample ID: Method BlankLab Sample ID: MB 180-379192/10 Matrix: Water Prep Type: Total/NA Analysis Batch: 379192 RL MDL Acetone ND 20.0 ug/L 11/17/21 13:17 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 11/17/21 13:17 1Benzene ND 5.00 ug/L 11/17/21 13:17 1Chlorobromomethane ND 5.00 ug/L 11/17/21 13:17 1Dichlorobromomethane ND 5.00 ug/L 11/17/21 13:17 1Bromoform ND 5.00 ug/L 11/17/21 13:17 1Bromomethane ND 5.00 ug/L 11/17/21 13:17 12-Butanone (MEK) ND 5.00 ug/L 11/17/21 13:17 1Carbon disulfide ND 5.00 ug/L 11/17/21 13:17 1Carbon tetrachloride ND 5.00 ug/L 11/17/21 13:17 1Chlorobenzene ND 5.00 ug/L 11/17/21 13:17 1Chlorodibromomethane ND 5.00 ug/L 11/17/21 13:17 1Chloroethane ND 5.00 ug/L 11/17/21 13:17 1Chloroform ND 5.00 ug/L 11/17/21 13:17 1Chloromethane ND 5.00 ug/L 11/17/21 13:17 1Cyclohexane ND 5.00 ug/L 11/17/21 13:17 11,2-Dibromo-3-Chloropropane ND 5.00 ug/L 11/17/21 13:17 11,2-Dichlorobenzene ND 5.00 ug/L 11/17/21 13:17 11,3-Dichlorobenzene ND 5.00 ug/L 11/17/21 13:17 11,4-Dichlorobenzene ND 5.00 ug/L 11/17/21 13:17 1Dichlorodifluoromethane ND 5.00 ug/L 11/17/21 13:17 11,1-Dichloroethane ND 5.00 ug/L 11/17/21 13:17 11,2-Dichloroethane ND 5.00 ug/L 11/17/21 13:17 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 13:17 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/17/21 13:17 11,1-Dichloroethene ND 5.00 ug/L 11/17/21 13:17 11,2-Dichloropropane ND 5.00 ug/L 11/17/21 13:17 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/17/21 13:17 1trans-1,3-Dichloropropene ND 1000 ug/L 11/17/21 13:17 11,4-Dioxane ND 5.00 ug/L 11/17/21 13:17 1Ethylbenzene ND 5.00 ug/L 11/17/21 13:17 12-Hexanone ND 5.00 ug/L 11/17/21 13:17 1Isopropylbenzene ND 25.0 ug/L 11/17/21 13:17 1Methyl acetate ND 5.00 ug/L 11/17/21 13:17 1Methylcyclohexane ND 5.00 ug/L 11/17/21 13:17 1Methylene Chloride ND 5.00 ug/L 11/17/21 13:17 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 11/17/21 13:17 1Methyl tert-butyl ether ND 5.00 ug/L 11/17/21 13:17 1Styrene Eurofins TestAmerica, Pittsburgh Page 110 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-379192/10 Matrix: Water Prep Type: Total/NA Analysis Batch: 379192 RL MDL 1,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/17/21 13:17 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 11/17/21 13:17 1Tetrachloroethene ND 5.00 ug/L 11/17/21 13:17 1Toluene ND 5.00 ug/L 11/17/21 13:17 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/17/21 13:17 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/17/21 13:17 11,1,1-Trichloroethane ND 5.00 ug/L 11/17/21 13:17 11,1,2-Trichloroethane ND 5.00 ug/L 11/17/21 13:17 1Trichloroethene ND 5.00 ug/L 11/17/21 13:17 1Trichlorofluoromethane ND 5.00 ug/L 11/17/21 13:17 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/17/21 13:17 1Vinyl chloride ND 5.00 ug/L 11/17/21 13:17 1m-Xylene & p-Xylene ND 5.00 ug/L 11/17/21 13:17 1o-Xylene ND 5.00 ug/L 11/17/21 13:17 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)124 52 -151 11/17/21 13:17 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 92 11/17/21 13:17 1Toluene-d8 (Surr)53 -124 75 11/17/21 13:17 14-Bromofluorobenzene (Surr)49 -118 118 11/17/21 13:17 1Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-379192/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 379192 Acetone 10.0 11.71 J ug/L 117 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 10.0 9.147 ug/L 91 68 -122 Chlorobromomethane 10.0 10.12 ug/L 101 59 -133 Dichlorobromomethane 10.0 10.02 ug/L 100 63 -132 Bromoform 10.0 10.08 ug/L 101 31 -164 Bromomethane 10.0 10.41 ug/L 104 20 -170 2-Butanone (MEK)10.0 7.785 ug/L 78 35 -158 Carbon disulfide 10.0 8.803 ug/L 88 32 -139 Carbon tetrachloride 10.0 10.61 ug/L 106 60 -135 Chlorobenzene 10.0 9.723 ug/L 97 72 -123 Chlorodibromomethane 10.0 10.40 ug/L 104 51 -144 Chloroethane 10.0 11.53 ug/L 115 10 -170 Chloroform 10.0 10.95 ug/L 110 62 -121 Chloromethane 10.0 8.567 ug/L 86 37 -170 1,2-Dibromo-3-Chloropropane 10.0 9.518 ug/L 95 10 -170 1,2-Dichlorobenzene 10.0 9.713 ug/L 97 68 -116 1,3-Dichlorobenzene 10.0 9.240 ug/L 92 70 -119 1,4-Dichlorobenzene 10.0 9.496 ug/L 95 74 -117 Dichlorodifluoromethane 10.0 9.013 ug/L 90 21 -165 1,1-Dichloroethane 10.0 9.510 ug/L 95 59 -125 1,2-Dichloroethane 10.0 10.79 ug/L 108 57 -149 cis-1,2-Dichloroethene 10.0 9.351 ug/L 94 64 -122 Eurofins TestAmerica, Pittsburgh Page 111 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-379192/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 379192 trans-1,2-Dichloroethene 10.0 9.164 ug/L 92 62 -126 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits 1,1-Dichloroethene 10.0 9.090 ug/L 91 49 -132 1,2-Dichloropropane 10.0 8.924 ug/L 89 65 -129 cis-1,3-Dichloropropene 10.0 8.715 ug/L 87 53 -140 trans-1,3-Dichloropropene 10.0 9.186 ug/L 92 57 -137 Ethylbenzene 10.0 9.211 ug/L 92 66 -122 2-Hexanone 10.0 8.919 ug/L 89 38 -157 Isopropylbenzene 10.0 9.370 ug/L 94 54 -130 Methylene Chloride 10.0 8.582 ug/L 86 51 -137 4-Methyl-2-pentanone (MIBK)10.0 7.963 ug/L 80 29 -167 Methyl tert-butyl ether 10.0 9.683 ug/L 97 36 -141 Styrene 10.0 9.620 ug/L 96 68 -127 1,1,2,2-Tetrachloroethane 10.0 9.531 ug/L 95 47 -147 Tetrachloroethene 10.0 9.796 ug/L 98 60 -129 Toluene 10.0 8.946 ug/L 89 67 -128 1,2,3-Trichlorobenzene 10.0 10.62 ug/L 106 10 -170 1,2,4-Trichlorobenzene 10.0 9.571 ug/L 96 15 -169 1,1,1-Trichloroethane 10.0 9.950 ug/L 100 64 -133 1,1,2-Trichloroethane 10.0 9.621 ug/L 96 59 -137 Trichloroethene 10.0 9.107 ug/L 91 67 -121 Trichlorofluoromethane 10.0 12.11 ug/L 121 32 -157 Vinyl chloride 10.0 7.798 ug/L 78 47 -147 m-Xylene & p-Xylene 10.0 9.587 ug/L 96 61 -128 o-Xylene 10.0 9.403 ug/L 94 64 -120 1,2-Dibromoethane 10.0 9.099 ug/L 91 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 112 LCS LCS Qualifier Limits%Recovery 99Toluene-d8 (Surr)53 -124 1034-Bromofluorobenzene (Surr)49 -118 111Dibromofluoromethane (Surr)60 -132 Client Sample ID: MW-7Lab Sample ID: 180-129621-13 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 379192 Acetone ND 10.0 ND ug/L 86 29 -163 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 10.0 9.256 ug/L 93 68 -122 Chlorobromomethane ND 10.0 9.833 ug/L 98 59 -133 Dichlorobromomethane ND 10.0 10.17 ug/L 102 63 -132 Bromoform ND 10.0 9.597 ug/L 96 31 -164 Bromomethane ND 10.0 10.71 ug/L 107 20 -170 2-Butanone (MEK)ND 10.0 7.730 ug/L 77 35 -158 Carbon disulfide ND 10.0 9.078 ug/L 91 32 -139 Carbon tetrachloride ND 10.0 11.62 ug/L 116 60 -135 Chlorobenzene ND 10.0 9.738 ug/L 97 72 -123 Chlorodibromomethane ND 10.0 10.15 ug/L 101 51 -144 Eurofins TestAmerica, Pittsburgh Page 112 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-7Lab Sample ID: 180-129621-13 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 379192 Chloroethane ND 10.0 11.81 ug/L 118 10 -170 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Chloroform ND 10.0 10.70 ug/L 107 62 -121 Chloromethane ND 10.0 9.827 ug/L 98 37 -170 1,2-Dibromo-3-Chloropropane ND 10.0 8.256 ug/L 83 10 -170 1,2-Dichlorobenzene ND 10.0 9.836 ug/L 98 68 -116 1,3-Dichlorobenzene ND 10.0 9.687 ug/L 97 70 -119 1,4-Dichlorobenzene ND 10.0 9.729 ug/L 97 74 -117 Dichlorodifluoromethane ND F2 10.0 12.26 ug/L 123 21 -165 1,1-Dichloroethane ND 10.0 9.675 ug/L 97 59 -125 1,2-Dichloroethane ND 10.0 11.46 ug/L 115 57 -149 cis-1,2-Dichloroethene ND 10.0 9.403 ug/L 94 64 -122 trans-1,2-Dichloroethene ND 10.0 9.817 ug/L 98 62 -126 1,1-Dichloroethene ND 10.0 9.035 ug/L 90 49 -132 1,2-Dichloropropane ND 10.0 9.009 ug/L 90 65 -129 cis-1,3-Dichloropropene ND 10.0 8.129 ug/L 81 53 -140 trans-1,3-Dichloropropene ND 10.0 8.834 ug/L 88 57 -137 Ethylbenzene ND 10.0 9.299 ug/L 93 66 -122 2-Hexanone ND 10.0 6.743 ug/L 67 38 -157 Isopropylbenzene ND 10.0 9.430 ug/L 94 54 -130 Methylene Chloride ND 10.0 9.504 ug/L 95 51 -137 4-Methyl-2-pentanone (MIBK)ND 10.0 6.869 ug/L 69 29 -167 Methyl tert-butyl ether ND 10.0 8.737 ug/L 87 36 -141 Styrene ND 10.0 10.06 ug/L 101 68 -127 1,1,2,2-Tetrachloroethane ND 10.0 8.748 ug/L 87 47 -147 Tetrachloroethene ND 10.0 10.84 ug/L 108 60 -129 Toluene ND 10.0 9.415 ug/L 94 67 -128 1,2,3-Trichlorobenzene ND 10.0 9.698 ug/L 97 10 -170 1,2,4-Trichlorobenzene ND 10.0 8.693 ug/L 87 15 -169 1,1,1-Trichloroethane ND 10.0 10.90 ug/L 109 64 -133 1,1,2-Trichloroethane ND 10.0 9.875 ug/L 99 59 -137 Trichloroethene ND 10.0 9.431 ug/L 94 67 -121 Trichlorofluoromethane ND F1 10.0 17.15 F1 ug/L 172 32 -157 Vinyl chloride ND 10.0 10.28 ug/L 103 47 -147 m-Xylene & p-Xylene ND 10.0 9.587 ug/L 96 61 -128 o-Xylene ND 10.0 9.402 ug/L 94 64 -120 1,2-Dibromoethane ND 10.0 8.906 ug/L 89 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 114 MS MS Qualifier Limits%Recovery 99Toluene-d8 (Surr)53 -124 1014-Bromofluorobenzene (Surr)49 -118 112Dibromofluoromethane (Surr)60 -132 Eurofins TestAmerica, Pittsburgh Page 113 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-7Lab Sample ID: 180-129621-13 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 379192 Acetone ND 10.0 ND ug/L 89 29 -163 5 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 10.0 9.694 ug/L 97 68 -122 5 21 Chlorobromomethane ND 10.0 10.62 ug/L 106 59 -133 8 26 Dichlorobromomethane ND 10.0 10.36 ug/L 104 63 -132 2 24 Bromoform ND 10.0 11.26 ug/L 113 31 -164 16 35 Bromomethane ND 10.0 10.82 ug/L 108 20 -170 1 30 2-Butanone (MEK)ND 10.0 8.490 ug/L 85 35 -158 9 35 Carbon disulfide ND 10.0 9.718 ug/L 97 32 -139 7 25 Carbon tetrachloride ND 10.0 10.76 ug/L 108 60 -135 8 25 Chlorobenzene ND 10.0 9.882 ug/L 99 72 -123 1 19 Chlorodibromomethane ND 10.0 10.33 ug/L 103 51 -144 2 25 Chloroethane ND 10.0 11.99 ug/L 120 10 -170 2 29 Chloroform ND 10.0 10.50 ug/L 105 62 -121 2 22 Chloromethane ND 10.0 8.998 ug/L 90 37 -170 9 28 1,2-Dibromo-3-Chloropropane ND 10.0 8.191 ug/L 82 10 -170 1 35 1,2-Dichlorobenzene ND 10.0 9.699 ug/L 97 68 -116 1 20 1,3-Dichlorobenzene ND 10.0 9.587 ug/L 96 70 -119 1 18 1,4-Dichlorobenzene ND 10.0 9.888 ug/L 99 74 -117 2 17 Dichlorodifluoromethane ND F2 10.0 9.332 F2 ug/L 93 21 -165 27 26 1,1-Dichloroethane ND 10.0 9.778 ug/L 98 59 -125 1 20 1,2-Dichloroethane ND 10.0 11.21 ug/L 112 57 -149 2 27 cis-1,2-Dichloroethene ND 10.0 10.11 ug/L 101 64 -122 7 22 trans-1,2-Dichloroethene ND 10.0 9.831 ug/L 98 62 -126 0 23 1,1-Dichloroethene ND 10.0 8.807 ug/L 88 49 -132 3 23 1,2-Dichloropropane ND 10.0 9.630 ug/L 96 65 -129 7 23 cis-1,3-Dichloropropene ND 10.0 9.058 ug/L 91 53 -140 11 26 trans-1,3-Dichloropropene ND 10.0 10.13 ug/L 101 57 -137 14 25 Ethylbenzene ND 10.0 9.220 ug/L 92 66 -122 1 22 2-Hexanone ND 10.0 7.350 ug/L 74 38 -157 9 35 Isopropylbenzene ND 10.0 9.185 ug/L 92 54 -130 3 22 Methylene Chloride ND 10.0 10.21 ug/L 102 51 -137 7 35 4-Methyl-2-pentanone (MIBK)ND 10.0 7.237 ug/L 72 29 -167 5 35 Methyl tert-butyl ether ND 10.0 9.217 ug/L 92 36 -141 5 35 Styrene ND 10.0 10.16 ug/L 102 68 -127 1 22 1,1,2,2-Tetrachloroethane ND 10.0 9.190 ug/L 92 47 -147 5 35 Tetrachloroethene ND 10.0 9.906 ug/L 99 60 -129 9 22 Toluene ND 10.0 9.354 ug/L 94 67 -128 1 22 1,2,3-Trichlorobenzene ND 10.0 9.918 ug/L 99 10 -170 2 35 1,2,4-Trichlorobenzene ND 10.0 9.680 ug/L 97 15 -169 11 35 1,1,1-Trichloroethane ND 10.0 10.50 ug/L 105 64 -133 4 22 1,1,2-Trichloroethane ND 10.0 9.528 ug/L 95 59 -137 4 29 Trichloroethene ND 10.0 9.527 ug/L 95 67 -121 1 23 Trichlorofluoromethane ND F1 10.0 14.71 ug/L 147 32 -157 15 35 Vinyl chloride ND 10.0 8.324 ug/L 83 47 -147 21 25 m-Xylene & p-Xylene ND 10.0 9.662 ug/L 97 61 -128 1 21 o-Xylene ND 10.0 9.431 ug/L 94 64 -120 0 23 1,2-Dibromoethane ND 10.0 9.024 ug/L 90 55 -146 1 30 Eurofins TestAmerica, Pittsburgh Page 114 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-7Lab Sample ID: 180-129621-13 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 379192 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 114 MSD MSD Qualifier Limits%Recovery 98Toluene-d8 (Surr)53 -124 1034-Bromofluorobenzene (Surr)49 -118 110Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix SpikeLab Sample ID: 180-129621-A-13 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 379192 Acetone ND 10.0 ND ug/L 86 29 -163 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 10.0 9.256 ug/L 93 68 -122 Chlorobromomethane ND 10.0 9.833 ug/L 98 59 -133 Dichlorobromomethane ND 10.0 10.17 ug/L 102 63 -132 Bromoform ND 10.0 9.597 ug/L 96 31 -164 Bromomethane ND 10.0 10.71 ug/L 107 20 -170 2-Butanone (MEK)ND 10.0 7.730 ug/L 77 35 -158 Carbon disulfide ND 10.0 9.078 ug/L 91 32 -139 Carbon tetrachloride ND 10.0 11.62 ug/L 116 60 -135 Chlorobenzene ND 10.0 9.738 ug/L 97 72 -123 Chlorodibromomethane ND 10.0 10.15 ug/L 101 51 -144 Chloroethane ND 10.0 11.81 ug/L 118 10 -170 Chloroform ND 10.0 10.70 ug/L 107 62 -121 Chloromethane ND 10.0 9.827 ug/L 98 37 -170 1,2-Dibromo-3-Chloropropane ND 10.0 8.256 ug/L 83 10 -170 1,2-Dichlorobenzene ND 10.0 9.836 ug/L 98 68 -116 1,3-Dichlorobenzene ND 10.0 9.687 ug/L 97 70 -119 1,4-Dichlorobenzene ND 10.0 9.729 ug/L 97 74 -117 Dichlorodifluoromethane ND F2 10.0 12.26 ug/L 123 21 -165 1,1-Dichloroethane ND 10.0 9.675 ug/L 97 59 -125 1,2-Dichloroethane ND 10.0 11.46 ug/L 115 57 -149 cis-1,2-Dichloroethene ND 10.0 9.403 ug/L 94 64 -122 trans-1,2-Dichloroethene ND 10.0 9.817 ug/L 98 62 -126 1,1-Dichloroethene ND 10.0 9.035 ug/L 90 49 -132 1,2-Dichloropropane ND 10.0 9.009 ug/L 90 65 -129 cis-1,3-Dichloropropene ND 10.0 8.129 ug/L 81 53 -140 trans-1,3-Dichloropropene ND 10.0 8.834 ug/L 88 57 -137 Ethylbenzene ND 10.0 9.299 ug/L 93 66 -122 2-Hexanone ND 10.0 6.743 ug/L 67 38 -157 Isopropylbenzene ND 10.0 9.430 ug/L 94 54 -130 Methylene Chloride ND 10.0 9.504 ug/L 95 51 -137 4-Methyl-2-pentanone (MIBK)ND 10.0 6.869 ug/L 69 29 -167 Methyl tert-butyl ether ND 10.0 8.737 ug/L 87 36 -141 Styrene ND 10.0 10.06 ug/L 101 68 -127 1,1,2,2-Tetrachloroethane ND 10.0 8.748 ug/L 87 47 -147 Tetrachloroethene ND 10.0 10.84 ug/L 108 60 -129 Toluene ND 10.0 9.415 ug/L 94 67 -128 1,2,3-Trichlorobenzene ND 10.0 9.698 ug/L 97 10 -170 Eurofins TestAmerica, Pittsburgh Page 115 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 180-129621-A-13 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 379192 1,2,4-Trichlorobenzene ND 10.0 8.693 ug/L 87 15 -169 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,1,1-Trichloroethane ND 10.0 10.90 ug/L 109 64 -133 1,1,2-Trichloroethane ND 10.0 9.875 ug/L 99 59 -137 Trichloroethene ND 10.0 9.431 ug/L 94 67 -121 Trichlorofluoromethane ND F1 10.0 17.15 F1 ug/L 172 32 -157 Vinyl chloride ND 10.0 10.28 ug/L 103 47 -147 m-Xylene & p-Xylene ND 10.0 9.587 ug/L 96 61 -128 o-Xylene ND 10.0 9.402 ug/L 94 64 -120 1,2-Dibromoethane ND 10.0 8.906 ug/L 89 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 114 MS MS Qualifier Limits%Recovery 99Toluene-d8 (Surr)53 -124 1014-Bromofluorobenzene (Surr)49 -118 112Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-129621-B-13 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 379192 Acetone ND 10.0 ND ug/L 89 29 -163 5 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 10.0 9.694 ug/L 97 68 -122 5 21 Chlorobromomethane ND 10.0 10.62 ug/L 106 59 -133 8 26 Dichlorobromomethane ND 10.0 10.36 ug/L 104 63 -132 2 24 Bromoform ND 10.0 11.26 ug/L 113 31 -164 16 35 Bromomethane ND 10.0 10.82 ug/L 108 20 -170 1 30 2-Butanone (MEK)ND 10.0 8.490 ug/L 85 35 -158 9 35 Carbon disulfide ND 10.0 9.718 ug/L 97 32 -139 7 25 Carbon tetrachloride ND 10.0 10.76 ug/L 108 60 -135 8 25 Chlorobenzene ND 10.0 9.882 ug/L 99 72 -123 1 19 Chlorodibromomethane ND 10.0 10.33 ug/L 103 51 -144 2 25 Chloroethane ND 10.0 11.99 ug/L 120 10 -170 2 29 Chloroform ND 10.0 10.50 ug/L 105 62 -121 2 22 Chloromethane ND 10.0 8.998 ug/L 90 37 -170 9 28 1,2-Dibromo-3-Chloropropane ND 10.0 8.191 ug/L 82 10 -170 1 35 1,2-Dichlorobenzene ND 10.0 9.699 ug/L 97 68 -116 1 20 1,3-Dichlorobenzene ND 10.0 9.587 ug/L 96 70 -119 1 18 1,4-Dichlorobenzene ND 10.0 9.888 ug/L 99 74 -117 2 17 Dichlorodifluoromethane ND F2 10.0 9.332 F2 ug/L 93 21 -165 27 26 1,1-Dichloroethane ND 10.0 9.778 ug/L 98 59 -125 1 20 1,2-Dichloroethane ND 10.0 11.21 ug/L 112 57 -149 2 27 cis-1,2-Dichloroethene ND 10.0 10.11 ug/L 101 64 -122 7 22 trans-1,2-Dichloroethene ND 10.0 9.831 ug/L 98 62 -126 0 23 1,1-Dichloroethene ND 10.0 8.807 ug/L 88 49 -132 3 23 1,2-Dichloropropane ND 10.0 9.630 ug/L 96 65 -129 7 23 cis-1,3-Dichloropropene ND 10.0 9.058 ug/L 91 53 -140 11 26 trans-1,3-Dichloropropene ND 10.0 10.13 ug/L 101 57 -137 14 25 Eurofins TestAmerica, Pittsburgh Page 116 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-129621-B-13 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 379192 Ethylbenzene ND 10.0 9.220 ug/L 92 66 -122 1 22 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 2-Hexanone ND 10.0 7.350 ug/L 74 38 -157 9 35 Isopropylbenzene ND 10.0 9.185 ug/L 92 54 -130 3 22 Methylene Chloride ND 10.0 10.21 ug/L 102 51 -137 7 35 4-Methyl-2-pentanone (MIBK)ND 10.0 7.237 ug/L 72 29 -167 5 35 Methyl tert-butyl ether ND 10.0 9.217 ug/L 92 36 -141 5 35 Styrene ND 10.0 10.16 ug/L 102 68 -127 1 22 1,1,2,2-Tetrachloroethane ND 10.0 9.190 ug/L 92 47 -147 5 35 Tetrachloroethene ND 10.0 9.906 ug/L 99 60 -129 9 22 Toluene ND 10.0 9.354 ug/L 94 67 -128 1 22 1,2,3-Trichlorobenzene ND 10.0 9.918 ug/L 99 10 -170 2 35 1,2,4-Trichlorobenzene ND 10.0 9.680 ug/L 97 15 -169 11 35 1,1,1-Trichloroethane ND 10.0 10.50 ug/L 105 64 -133 4 22 1,1,2-Trichloroethane ND 10.0 9.528 ug/L 95 59 -137 4 29 Trichloroethene ND 10.0 9.527 ug/L 95 67 -121 1 23 Trichlorofluoromethane ND F1 10.0 14.71 ug/L 147 32 -157 15 35 Vinyl chloride ND 10.0 8.324 ug/L 83 47 -147 21 25 m-Xylene & p-Xylene ND 10.0 9.662 ug/L 97 61 -128 1 21 o-Xylene ND 10.0 9.431 ug/L 94 64 -120 0 23 1,2-Dibromoethane ND 10.0 9.024 ug/L 90 55 -146 1 30 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 114 MSD MSD Qualifier Limits%Recovery 98Toluene-d8 (Surr)53 -124 1034-Bromofluorobenzene (Surr)49 -118 110Dibromofluoromethane (Surr)60 -132 Client Sample ID: Method BlankLab Sample ID: MB 180-379327/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 379327 RL MDL Acetone ND 20.0 ug/L 11/18/21 08:15 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 11/18/21 08:15 1Benzene ND 5.00 ug/L 11/18/21 08:15 1Chlorobromomethane ND 5.00 ug/L 11/18/21 08:15 1Dichlorobromomethane ND 5.00 ug/L 11/18/21 08:15 1Bromoform ND 5.00 ug/L 11/18/21 08:15 1Bromomethane ND 5.00 ug/L 11/18/21 08:15 12-Butanone (MEK) ND 5.00 ug/L 11/18/21 08:15 1Carbon disulfide ND 5.00 ug/L 11/18/21 08:15 1Carbon tetrachloride ND 5.00 ug/L 11/18/21 08:15 1Chlorobenzene ND 5.00 ug/L 11/18/21 08:15 1Chlorodibromomethane ND 5.00 ug/L 11/18/21 08:15 1Chloroethane ND 5.00 ug/L 11/18/21 08:15 1Chloroform ND 5.00 ug/L 11/18/21 08:15 1Chloromethane ND 5.00 ug/L 11/18/21 08:15 1Cyclohexane ND 5.00 ug/L 11/18/21 08:15 11,2-Dibromo-3-Chloropropane Eurofins TestAmerica, Pittsburgh Page 117 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-379327/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 379327 RL MDL 1,2-Dichlorobenzene ND 5.00 ug/L 11/18/21 08:15 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 11/18/21 08:15 11,3-Dichlorobenzene ND 5.00 ug/L 11/18/21 08:15 11,4-Dichlorobenzene ND 5.00 ug/L 11/18/21 08:15 1Dichlorodifluoromethane ND 5.00 ug/L 11/18/21 08:15 11,1-Dichloroethane ND 5.00 ug/L 11/18/21 08:15 11,2-Dichloroethane ND 5.00 ug/L 11/18/21 08:15 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 08:15 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/18/21 08:15 11,1-Dichloroethene ND 5.00 ug/L 11/18/21 08:15 11,2-Dichloropropane ND 5.00 ug/L 11/18/21 08:15 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/18/21 08:15 1trans-1,3-Dichloropropene ND 1000 ug/L 11/18/21 08:15 11,4-Dioxane ND 5.00 ug/L 11/18/21 08:15 1Ethylbenzene ND 5.00 ug/L 11/18/21 08:15 12-Hexanone ND 5.00 ug/L 11/18/21 08:15 1Isopropylbenzene ND 25.0 ug/L 11/18/21 08:15 1Methyl acetate ND 5.00 ug/L 11/18/21 08:15 1Methylcyclohexane ND 5.00 ug/L 11/18/21 08:15 1Methylene Chloride ND 5.00 ug/L 11/18/21 08:15 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 11/18/21 08:15 1Methyl tert-butyl ether ND 5.00 ug/L 11/18/21 08:15 1Styrene ND 5.00 ug/L 11/18/21 08:15 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/18/21 08:15 1Tetrachloroethene ND 5.00 ug/L 11/18/21 08:15 1Toluene ND 5.00 ug/L 11/18/21 08:15 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/18/21 08:15 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/18/21 08:15 11,1,1-Trichloroethane ND 5.00 ug/L 11/18/21 08:15 11,1,2-Trichloroethane ND 5.00 ug/L 11/18/21 08:15 1Trichloroethene ND 5.00 ug/L 11/18/21 08:15 1Trichlorofluoromethane ND 5.00 ug/L 11/18/21 08:15 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/18/21 08:15 1Vinyl chloride ND 5.00 ug/L 11/18/21 08:15 1m-Xylene & p-Xylene ND 5.00 ug/L 11/18/21 08:15 1o-Xylene ND 5.00 ug/L 11/18/21 08:15 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)91 52 -151 11/18/21 08:15 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 97 11/18/21 08:15 1Toluene-d8 (Surr)53 -124 92 11/18/21 08:15 14-Bromofluorobenzene (Surr)49 -118 95 11/18/21 08:15 1Dibromofluoromethane (Surr)60 -132 Eurofins TestAmerica, Pittsburgh Page 118 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-379327/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 379327 Acetone 40.0 38.00 ug/L 95 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 40.0 40.13 ug/L 100 68 -122 Chlorobromomethane 40.0 38.52 ug/L 96 59 -133 Dichlorobromomethane 40.0 38.20 ug/L 96 63 -132 Bromoform 40.0 35.36 ug/L 88 31 -164 Bromomethane 40.0 38.90 ug/L 97 20 -170 2-Butanone (MEK)40.0 36.49 ug/L 91 35 -158 Carbon disulfide 40.0 38.56 ug/L 96 32 -139 Carbon tetrachloride 40.0 41.88 ug/L 105 60 -135 Chlorobenzene 40.0 40.03 ug/L 100 72 -123 Chlorodibromomethane 40.0 39.18 ug/L 98 51 -144 Chloroethane 40.0 34.84 ug/L 87 10 -170 Chloroform 40.0 36.32 ug/L 91 62 -121 Chloromethane 40.0 44.72 ug/L 112 37 -170 1,2-Dibromo-3-Chloropropane 40.0 36.82 ug/L 92 10 -170 1,2-Dichlorobenzene 40.0 40.12 ug/L 100 68 -116 1,3-Dichlorobenzene 40.0 40.91 ug/L 102 70 -119 1,4-Dichlorobenzene 40.0 40.34 ug/L 101 74 -117 Dichlorodifluoromethane 40.0 46.40 ug/L 116 21 -165 1,1-Dichloroethane 40.0 39.81 ug/L 100 59 -125 1,2-Dichloroethane 40.0 37.64 ug/L 94 57 -149 cis-1,2-Dichloroethene 40.0 39.69 ug/L 99 64 -122 trans-1,2-Dichloroethene 40.0 40.94 ug/L 102 62 -126 1,1-Dichloroethene 40.0 41.87 ug/L 105 49 -132 1,2-Dichloropropane 40.0 39.02 ug/L 98 65 -129 cis-1,3-Dichloropropene 40.0 39.41 ug/L 99 53 -140 trans-1,3-Dichloropropene 40.0 39.65 ug/L 99 57 -137 Ethylbenzene 40.0 41.05 ug/L 103 66 -122 2-Hexanone 40.0 37.29 ug/L 93 38 -157 Isopropylbenzene 40.0 41.51 ug/L 104 54 -130 Methylene Chloride 40.0 38.79 ug/L 97 51 -137 4-Methyl-2-pentanone (MIBK)40.0 37.40 ug/L 94 29 -167 Methyl tert-butyl ether 40.0 37.07 ug/L 93 36 -141 Styrene 40.0 40.80 ug/L 102 68 -127 1,1,2,2-Tetrachloroethane 40.0 38.39 ug/L 96 47 -147 Tetrachloroethene 40.0 40.91 ug/L 102 60 -129 Toluene 40.0 40.41 ug/L 101 67 -128 1,2,3-Trichlorobenzene 40.0 40.48 ug/L 101 10 -170 1,2,4-Trichlorobenzene 40.0 41.92 ug/L 105 15 -169 1,1,1-Trichloroethane 40.0 42.01 ug/L 105 64 -133 1,1,2-Trichloroethane 40.0 38.30 ug/L 96 59 -137 Trichloroethene 40.0 39.91 ug/L 100 67 -121 Trichlorofluoromethane 40.0 17.68 ug/L 44 32 -157 Vinyl chloride 40.0 41.89 ug/L 105 47 -147 m-Xylene & p-Xylene 40.0 40.52 ug/L 101 61 -128 o-Xylene 40.0 40.53 ug/L 101 64 -120 1,2-Dibromoethane 40.0 38.20 ug/L 96 55 -146 Eurofins TestAmerica, Pittsburgh Page 119 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-379327/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 379327 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 93 LCS LCS Qualifier Limits%Recovery 97Toluene-d8 (Surr)53 -124 974-Bromofluorobenzene (Surr)49 -118 96Dibromofluoromethane (Surr)60 -132 Client Sample ID: MW-13Lab Sample ID: 180-129668-12 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 379327 Acetone ND 40.0 31.08 ug/L 78 29 -163 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 40.0 41.27 ug/L 103 68 -122 Chlorobromomethane ND 40.0 40.63 ug/L 102 59 -133 Dichlorobromomethane ND 40.0 39.47 ug/L 99 63 -132 Bromoform ND 40.0 35.95 ug/L 90 31 -164 Bromomethane ND 40.0 38.36 ug/L 96 20 -170 2-Butanone (MEK)ND 40.0 34.92 ug/L 87 35 -158 Carbon disulfide ND 40.0 47.14 ug/L 118 32 -139 Carbon tetrachloride ND 40.0 41.87 ug/L 105 60 -135 Chlorobenzene ND 40.0 41.09 ug/L 103 72 -123 Chlorodibromomethane ND 40.0 39.81 ug/L 100 51 -144 Chloroethane ND 40.0 34.40 ug/L 86 10 -170 Chloroform ND 40.0 36.99 ug/L 92 62 -121 Chloromethane ND 40.0 41.19 ug/L 103 37 -170 1,2-Dibromo-3-Chloropropane ND 40.0 36.76 ug/L 92 10 -170 1,2-Dichlorobenzene ND 40.0 41.20 ug/L 103 68 -116 1,3-Dichlorobenzene ND 40.0 41.17 ug/L 103 70 -119 1,4-Dichlorobenzene ND 40.0 41.01 ug/L 103 74 -117 Dichlorodifluoromethane ND 40.0 43.66 ug/L 109 21 -165 1,1-Dichloroethane ND 40.0 41.28 ug/L 103 59 -125 1,2-Dichloroethane ND 40.0 40.72 ug/L 102 57 -149 cis-1,2-Dichloroethene 12.5 40.0 53.61 ug/L 103 64 -122 trans-1,2-Dichloroethene ND 40.0 42.01 ug/L 105 62 -126 1,1-Dichloroethene ND 40.0 42.73 ug/L 107 49 -132 1,2-Dichloropropane ND 40.0 40.25 ug/L 101 65 -129 cis-1,3-Dichloropropene ND 40.0 40.87 ug/L 102 53 -140 trans-1,3-Dichloropropene ND 40.0 41.22 ug/L 103 57 -137 Ethylbenzene ND 40.0 41.58 ug/L 104 66 -122 2-Hexanone ND 40.0 37.95 ug/L 95 38 -157 Isopropylbenzene ND 40.0 43.01 ug/L 108 54 -130 Methylene Chloride ND 40.0 40.12 ug/L 100 51 -137 4-Methyl-2-pentanone (MIBK)ND 40.0 40.02 ug/L 100 29 -167 Methyl tert-butyl ether ND 40.0 40.28 ug/L 101 36 -141 Styrene ND 40.0 42.43 ug/L 106 68 -127 1,1,2,2-Tetrachloroethane ND 40.0 41.69 ug/L 104 47 -147 Tetrachloroethene ND 40.0 41.55 ug/L 104 60 -129 Toluene ND 40.0 40.89 ug/L 102 67 -128 1,2,3-Trichlorobenzene ND 40.0 41.02 ug/L 103 10 -170 Eurofins TestAmerica, Pittsburgh Page 120 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-13Lab Sample ID: 180-129668-12 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 379327 1,2,4-Trichlorobenzene ND 40.0 43.04 ug/L 108 15 -169 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,1,1-Trichloroethane ND 40.0 42.59 ug/L 106 64 -133 1,1,2-Trichloroethane ND 40.0 40.32 ug/L 101 59 -137 Trichloroethene ND 40.0 41.33 ug/L 103 67 -121 Trichlorofluoromethane ND 40.0 18.25 ug/L 46 32 -157 Vinyl chloride ND 40.0 43.59 ug/L 109 47 -147 m-Xylene & p-Xylene ND 40.0 41.44 ug/L 104 61 -128 o-Xylene ND 40.0 41.91 ug/L 105 64 -120 1,2-Dibromoethane ND 40.0 40.76 ug/L 102 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 93 MS MS Qualifier Limits%Recovery 96Toluene-d8 (Surr)53 -124 1054-Bromofluorobenzene (Surr)49 -118 97Dibromofluoromethane (Surr)60 -132 Client Sample ID: MW-13Lab Sample ID: 180-129668-12 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 379327 Acetone ND 40.0 31.34 ug/L 78 29 -163 1 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 40.0 41.36 ug/L 103 68 -122 0 21 Chlorobromomethane ND 40.0 41.52 ug/L 104 59 -133 2 26 Dichlorobromomethane ND 40.0 39.88 ug/L 100 63 -132 1 24 Bromoform ND 40.0 36.05 ug/L 90 31 -164 0 35 Bromomethane ND 40.0 40.44 ug/L 101 20 -170 5 30 2-Butanone (MEK)ND 40.0 35.69 ug/L 89 35 -158 2 35 Carbon disulfide ND 40.0 46.92 ug/L 117 32 -139 0 25 Carbon tetrachloride ND 40.0 42.10 ug/L 105 60 -135 1 25 Chlorobenzene ND 40.0 41.20 ug/L 103 72 -123 0 19 Chlorodibromomethane ND 40.0 40.23 ug/L 101 51 -144 1 25 Chloroethane ND 40.0 34.34 ug/L 86 10 -170 0 29 Chloroform ND 40.0 37.24 ug/L 93 62 -121 1 22 Chloromethane ND 40.0 41.69 ug/L 104 37 -170 1 28 1,2-Dibromo-3-Chloropropane ND 40.0 38.60 ug/L 96 10 -170 5 35 1,2-Dichlorobenzene ND 40.0 42.07 ug/L 105 68 -116 2 20 1,3-Dichlorobenzene ND 40.0 41.59 ug/L 104 70 -119 1 18 1,4-Dichlorobenzene ND 40.0 41.53 ug/L 104 74 -117 1 17 Dichlorodifluoromethane ND 40.0 43.12 ug/L 108 21 -165 1 26 1,1-Dichloroethane ND 40.0 41.61 ug/L 104 59 -125 1 20 1,2-Dichloroethane ND 40.0 40.72 ug/L 102 57 -149 0 27 cis-1,2-Dichloroethene 12.5 40.0 53.91 ug/L 104 64 -122 1 22 trans-1,2-Dichloroethene ND 40.0 42.14 ug/L 105 62 -126 0 23 1,1-Dichloroethene ND 40.0 42.49 ug/L 106 49 -132 1 23 1,2-Dichloropropane ND 40.0 41.14 ug/L 103 65 -129 2 23 cis-1,3-Dichloropropene ND 40.0 41.28 ug/L 103 53 -140 1 26 trans-1,3-Dichloropropene ND 40.0 41.70 ug/L 104 57 -137 1 25 Eurofins TestAmerica, Pittsburgh Page 121 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: MW-13Lab Sample ID: 180-129668-12 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 379327 Ethylbenzene ND 40.0 41.25 ug/L 103 66 -122 1 22 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 2-Hexanone ND 40.0 39.41 ug/L 99 38 -157 4 35 Isopropylbenzene ND 40.0 42.95 ug/L 107 54 -130 0 22 Methylene Chloride ND 40.0 41.08 ug/L 103 51 -137 2 35 4-Methyl-2-pentanone (MIBK)ND 40.0 41.28 ug/L 103 29 -167 3 35 Methyl tert-butyl ether ND 40.0 41.37 ug/L 103 36 -141 3 35 Styrene ND 40.0 42.47 ug/L 106 68 -127 0 22 1,1,2,2-Tetrachloroethane ND 40.0 41.99 ug/L 105 47 -147 1 35 Tetrachloroethene ND 40.0 41.67 ug/L 104 60 -129 0 22 Toluene ND 40.0 40.99 ug/L 102 67 -128 0 22 1,2,3-Trichlorobenzene ND 40.0 45.37 ug/L 113 10 -170 10 35 1,2,4-Trichlorobenzene ND 40.0 45.75 ug/L 114 15 -169 6 35 1,1,1-Trichloroethane ND 40.0 43.37 ug/L 108 64 -133 2 22 1,1,2-Trichloroethane ND 40.0 40.48 ug/L 101 59 -137 0 29 Trichloroethene ND 40.0 41.07 ug/L 103 67 -121 1 23 Trichlorofluoromethane ND 40.0 18.53 ug/L 46 32 -157 2 35 Vinyl chloride ND 40.0 43.60 ug/L 109 47 -147 0 25 m-Xylene & p-Xylene ND 40.0 41.37 ug/L 103 61 -128 0 21 o-Xylene ND 40.0 41.88 ug/L 105 64 -120 0 23 1,2-Dibromoethane ND 40.0 40.57 ug/L 101 55 -146 0 30 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 91 MSD MSD Qualifier Limits%Recovery 95Toluene-d8 (Surr)53 -124 1034-Bromofluorobenzene (Surr)49 -118 96Dibromofluoromethane (Surr)60 -132 Client Sample ID: Method BlankLab Sample ID: MB 180-379481/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 379481 RL MDL Acetone ND 20.0 ug/L 11/19/21 08:17 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 11/19/21 08:17 1Benzene ND 5.00 ug/L 11/19/21 08:17 1Chlorobromomethane ND 5.00 ug/L 11/19/21 08:17 1Dichlorobromomethane ND 5.00 ug/L 11/19/21 08:17 1Bromoform ND 5.00 ug/L 11/19/21 08:17 1Bromomethane ND 5.00 ug/L 11/19/21 08:17 12-Butanone (MEK) ND 5.00 ug/L 11/19/21 08:17 1Carbon disulfide ND 5.00 ug/L 11/19/21 08:17 1Carbon tetrachloride ND 5.00 ug/L 11/19/21 08:17 1Chlorobenzene ND 5.00 ug/L 11/19/21 08:17 1Chlorodibromomethane ND 5.00 ug/L 11/19/21 08:17 1Chloroethane ND 5.00 ug/L 11/19/21 08:17 1Chloroform ND 5.00 ug/L 11/19/21 08:17 1Chloromethane ND 5.00 ug/L 11/19/21 08:17 1Cyclohexane ND 5.00 ug/L 11/19/21 08:17 11,2-Dibromo-3-Chloropropane Eurofins TestAmerica, Pittsburgh Page 122 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-379481/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 379481 RL MDL 1,2-Dichlorobenzene ND 5.00 ug/L 11/19/21 08:17 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 11/19/21 08:17 11,3-Dichlorobenzene ND 5.00 ug/L 11/19/21 08:17 11,4-Dichlorobenzene ND 5.00 ug/L 11/19/21 08:17 1Dichlorodifluoromethane ND 5.00 ug/L 11/19/21 08:17 11,1-Dichloroethane ND 5.00 ug/L 11/19/21 08:17 11,2-Dichloroethane ND 5.00 ug/L 11/19/21 08:17 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/19/21 08:17 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/19/21 08:17 11,1-Dichloroethene ND 5.00 ug/L 11/19/21 08:17 11,2-Dichloropropane ND 5.00 ug/L 11/19/21 08:17 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/19/21 08:17 1trans-1,3-Dichloropropene ND 1000 ug/L 11/19/21 08:17 11,4-Dioxane ND 5.00 ug/L 11/19/21 08:17 1Ethylbenzene ND 5.00 ug/L 11/19/21 08:17 12-Hexanone ND 5.00 ug/L 11/19/21 08:17 1Isopropylbenzene ND 25.0 ug/L 11/19/21 08:17 1Methyl acetate ND 5.00 ug/L 11/19/21 08:17 1Methylcyclohexane ND 5.00 ug/L 11/19/21 08:17 1Methylene Chloride ND 5.00 ug/L 11/19/21 08:17 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 11/19/21 08:17 1Methyl tert-butyl ether ND 5.00 ug/L 11/19/21 08:17 1Styrene ND 5.00 ug/L 11/19/21 08:17 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/19/21 08:17 1Tetrachloroethene ND 5.00 ug/L 11/19/21 08:17 1Toluene ND 5.00 ug/L 11/19/21 08:17 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/19/21 08:17 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/19/21 08:17 11,1,1-Trichloroethane ND 5.00 ug/L 11/19/21 08:17 11,1,2-Trichloroethane ND 5.00 ug/L 11/19/21 08:17 1Trichloroethene ND 5.00 ug/L 11/19/21 08:17 1Trichlorofluoromethane ND 5.00 ug/L 11/19/21 08:17 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/19/21 08:17 1Vinyl chloride ND 5.00 ug/L 11/19/21 08:17 1m-Xylene & p-Xylene ND 5.00 ug/L 11/19/21 08:17 1o-Xylene ND 5.00 ug/L 11/19/21 08:17 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)99 52 -151 11/19/21 08:17 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 105 11/19/21 08:17 1Toluene-d8 (Surr)53 -124 94 11/19/21 08:17 14-Bromofluorobenzene (Surr)49 -118 103 11/19/21 08:17 1Dibromofluoromethane (Surr)60 -132 Eurofins TestAmerica, Pittsburgh Page 123 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-379481/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 379481 Acetone 40.0 37.48 ug/L 94 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 40.0 42.25 ug/L 106 68 -122 Chlorobromomethane 40.0 40.21 ug/L 101 59 -133 Dichlorobromomethane 40.0 40.13 ug/L 100 63 -132 Bromoform 40.0 33.69 ug/L 84 31 -164 Bromomethane 40.0 45.49 ug/L 114 20 -170 2-Butanone (MEK)40.0 37.59 ug/L 94 35 -158 Carbon disulfide 40.0 52.22 ug/L 131 32 -139 Carbon tetrachloride 40.0 43.68 ug/L 109 60 -135 Chlorobenzene 40.0 42.38 ug/L 106 72 -123 Chlorodibromomethane 40.0 38.83 ug/L 97 51 -144 Chloroethane 40.0 37.52 ug/L 94 10 -170 Chloroform 40.0 38.37 ug/L 96 62 -121 Chloromethane 40.0 53.52 ug/L 134 37 -170 1,2-Dibromo-3-Chloropropane 40.0 33.10 ug/L 83 10 -170 1,2-Dichlorobenzene 40.0 41.79 ug/L 104 68 -116 1,3-Dichlorobenzene 40.0 42.24 ug/L 106 70 -119 1,4-Dichlorobenzene 40.0 42.00 ug/L 105 74 -117 Dichlorodifluoromethane 40.0 55.04 ug/L 138 21 -165 1,1-Dichloroethane 40.0 41.66 ug/L 104 59 -125 1,2-Dichloroethane 40.0 39.72 ug/L 99 57 -149 cis-1,2-Dichloroethene 40.0 41.67 ug/L 104 64 -122 trans-1,2-Dichloroethene 40.0 43.50 ug/L 109 62 -126 1,1-Dichloroethene 40.0 44.07 ug/L 110 49 -132 1,2-Dichloropropane 40.0 40.87 ug/L 102 65 -129 cis-1,3-Dichloropropene 40.0 40.86 ug/L 102 53 -140 trans-1,3-Dichloropropene 40.0 40.19 ug/L 100 57 -137 Ethylbenzene 40.0 42.89 ug/L 107 66 -122 2-Hexanone 40.0 35.72 ug/L 89 38 -157 Isopropylbenzene 40.0 44.10 ug/L 110 54 -130 Methylene Chloride 40.0 40.78 ug/L 102 51 -137 4-Methyl-2-pentanone (MIBK)40.0 35.54 ug/L 89 29 -167 Methyl tert-butyl ether 40.0 37.95 ug/L 95 36 -141 Styrene 40.0 43.27 ug/L 108 68 -127 1,1,2,2-Tetrachloroethane 40.0 38.33 ug/L 96 47 -147 Tetrachloroethene 40.0 42.35 ug/L 106 60 -129 Toluene 40.0 42.22 ug/L 106 67 -128 1,2,3-Trichlorobenzene 40.0 40.54 ug/L 101 10 -170 1,2,4-Trichlorobenzene 40.0 43.41 ug/L 109 15 -169 1,1,1-Trichloroethane 40.0 44.28 ug/L 111 64 -133 1,1,2-Trichloroethane 40.0 38.96 ug/L 97 59 -137 Trichloroethene 40.0 41.93 ug/L 105 67 -121 Trichlorofluoromethane 40.0 23.27 ug/L 58 32 -157 Vinyl chloride 40.0 48.92 ug/L 122 47 -147 m-Xylene & p-Xylene 40.0 43.14 ug/L 108 61 -128 o-Xylene 40.0 42.82 ug/L 107 64 -120 1,2-Dibromoethane 40.0 38.22 ug/L 96 55 -146 Eurofins TestAmerica, Pittsburgh Page 124 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-379481/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 379481 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 100 LCS LCS Qualifier Limits%Recovery 108Toluene-d8 (Surr)53 -124 1094-Bromofluorobenzene (Surr)49 -118 108Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix SpikeLab Sample ID: 180-130169-G-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 379481 Acetone ND 40.0 40.57 ug/L 101 29 -163 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Benzene ND 40.0 40.91 ug/L 102 68 -122 Chlorobromomethane ND 40.0 38.88 ug/L 97 59 -133 Dichlorobromomethane ND 40.0 37.66 ug/L 94 63 -132 Bromoform ND 40.0 34.30 ug/L 86 31 -164 Bromomethane ND 40.0 41.61 ug/L 104 20 -170 2-Butanone (MEK)24.3 40.0 56.43 ug/L 80 35 -158 Carbon disulfide ND 40.0 47.12 ug/L 118 32 -139 Carbon tetrachloride ND 40.0 42.41 ug/L 106 60 -135 Chlorobenzene ND 40.0 40.75 ug/L 102 72 -123 Chlorodibromomethane ND 40.0 37.38 ug/L 93 51 -144 Chloroethane ND 40.0 37.02 ug/L 93 10 -170 Chloroform ND 40.0 36.28 ug/L 91 62 -121 Chloromethane ND 40.0 42.41 ug/L 106 37 -170 1,2-Dibromo-3-Chloropropane ND 40.0 34.07 ug/L 85 10 -170 1,2-Dichlorobenzene ND 40.0 39.91 ug/L 100 68 -116 1,3-Dichlorobenzene ND 40.0 39.85 ug/L 100 70 -119 1,4-Dichlorobenzene ND 40.0 39.46 ug/L 99 74 -117 Dichlorodifluoromethane ND 40.0 52.02 ug/L 130 21 -165 1,1-Dichloroethane ND 40.0 40.50 ug/L 101 59 -125 1,2-Dichloroethane ND 40.0 38.95 ug/L 97 57 -149 cis-1,2-Dichloroethene ND 40.0 40.84 ug/L 102 64 -122 trans-1,2-Dichloroethene ND 40.0 42.18 ug/L 105 62 -126 1,1-Dichloroethene ND 40.0 41.12 ug/L 103 49 -132 1,2-Dichloropropane ND 40.0 38.83 ug/L 97 65 -129 cis-1,3-Dichloropropene ND 40.0 38.12 ug/L 95 53 -140 trans-1,3-Dichloropropene ND 40.0 38.77 ug/L 97 57 -137 Ethylbenzene ND 40.0 41.85 ug/L 105 66 -122 2-Hexanone ND 40.0 36.47 ug/L 91 38 -157 Isopropylbenzene ND 40.0 43.18 ug/L 108 54 -130 Methylene Chloride ND 40.0 38.53 ug/L 96 51 -137 4-Methyl-2-pentanone (MIBK)ND 40.0 37.46 ug/L 94 29 -167 Methyl tert-butyl ether ND 40.0 37.69 ug/L 94 36 -141 Styrene ND 40.0 42.35 ug/L 106 68 -127 1,1,2,2-Tetrachloroethane ND 40.0 39.99 ug/L 100 47 -147 Tetrachloroethene ND 40.0 40.73 ug/L 102 60 -129 Toluene ND 40.0 40.57 ug/L 101 67 -128 1,2,3-Trichlorobenzene ND 40.0 36.21 ug/L 91 10 -170 Eurofins TestAmerica, Pittsburgh Page 125 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix SpikeLab Sample ID: 180-130169-G-1 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 379481 1,2,4-Trichlorobenzene ND 40.0 38.89 ug/L 97 15 -169 Analyte MS MS DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,1,1-Trichloroethane ND 40.0 43.10 ug/L 108 64 -133 1,1,2-Trichloroethane ND 40.0 37.60 ug/L 94 59 -137 Trichloroethene ND 40.0 40.39 ug/L 101 67 -121 Trichlorofluoromethane ND 40.0 23.80 ug/L 59 32 -157 Vinyl chloride ND 40.0 46.69 ug/L 117 47 -147 m-Xylene & p-Xylene ND 40.0 41.22 ug/L 103 61 -128 o-Xylene ND 40.0 41.83 ug/L 105 64 -120 1,2-Dibromoethane ND 40.0 37.50 ug/L 94 55 -146 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 92 MS MS Qualifier Limits%Recovery 96Toluene-d8 (Surr)53 -124 994-Bromofluorobenzene (Surr)49 -118 96Dibromofluoromethane (Surr)60 -132 Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-130169-G-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 379481 Acetone ND 40.0 40.39 ug/L 101 29 -163 0 35 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Benzene ND 40.0 41.43 ug/L 104 68 -122 1 21 Chlorobromomethane ND 40.0 38.74 ug/L 97 59 -133 0 26 Dichlorobromomethane ND 40.0 37.71 ug/L 94 63 -132 0 24 Bromoform ND 40.0 34.17 ug/L 85 31 -164 0 35 Bromomethane ND 40.0 42.05 ug/L 105 20 -170 1 30 2-Butanone (MEK)24.3 40.0 58.71 ug/L 86 35 -158 4 35 Carbon disulfide ND 40.0 49.49 ug/L 124 32 -139 5 25 Carbon tetrachloride ND 40.0 42.18 ug/L 105 60 -135 1 25 Chlorobenzene ND 40.0 41.47 ug/L 104 72 -123 2 19 Chlorodibromomethane ND 40.0 38.68 ug/L 97 51 -144 3 25 Chloroethane ND 40.0 36.77 ug/L 92 10 -170 1 29 Chloroform ND 40.0 36.37 ug/L 91 62 -121 0 22 Chloromethane ND 40.0 51.06 ug/L 128 37 -170 19 28 1,2-Dibromo-3-Chloropropane ND 40.0 37.29 ug/L 93 10 -170 9 35 1,2-Dichlorobenzene ND 40.0 41.10 ug/L 103 68 -116 3 20 1,3-Dichlorobenzene ND 40.0 41.23 ug/L 103 70 -119 3 18 1,4-Dichlorobenzene ND 40.0 40.99 ug/L 102 74 -117 4 17 Dichlorodifluoromethane ND 40.0 51.38 ug/L 128 21 -165 1 26 1,1-Dichloroethane ND 40.0 40.81 ug/L 102 59 -125 1 20 1,2-Dichloroethane ND 40.0 39.22 ug/L 98 57 -149 1 27 cis-1,2-Dichloroethene ND 40.0 40.48 ug/L 101 64 -122 1 22 trans-1,2-Dichloroethene ND 40.0 42.74 ug/L 107 62 -126 1 23 1,1-Dichloroethene ND 40.0 40.77 ug/L 102 49 -132 1 23 1,2-Dichloropropane ND 40.0 39.34 ug/L 98 65 -129 1 23 cis-1,3-Dichloropropene ND 40.0 39.57 ug/L 99 53 -140 4 26 trans-1,3-Dichloropropene ND 40.0 39.99 ug/L 100 57 -137 3 25 Eurofins TestAmerica, Pittsburgh Page 126 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Matrix Spike DuplicateLab Sample ID: 180-130169-G-1 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 379481 Ethylbenzene ND 40.0 42.46 ug/L 106 66 -122 1 22 Analyte MSD MSD DUnitResult Qualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 2-Hexanone ND 40.0 38.35 ug/L 96 38 -157 5 35 Isopropylbenzene ND 40.0 43.88 ug/L 110 54 -130 2 22 Methylene Chloride ND 40.0 38.18 ug/L 95 51 -137 1 35 4-Methyl-2-pentanone (MIBK)ND 40.0 40.12 ug/L 100 29 -167 7 35 Methyl tert-butyl ether ND 40.0 38.33 ug/L 96 36 -141 2 35 Styrene ND 40.0 42.35 ug/L 106 68 -127 0 22 1,1,2,2-Tetrachloroethane ND 40.0 41.12 ug/L 103 47 -147 3 35 Tetrachloroethene ND 40.0 42.04 ug/L 105 60 -129 3 22 Toluene ND 40.0 42.34 ug/L 106 67 -128 4 22 1,2,3-Trichlorobenzene ND 40.0 43.43 ug/L 109 10 -170 18 35 1,2,4-Trichlorobenzene ND 40.0 42.84 ug/L 107 15 -169 10 35 1,1,1-Trichloroethane ND 40.0 42.99 ug/L 107 64 -133 0 22 1,1,2-Trichloroethane ND 40.0 39.49 ug/L 99 59 -137 5 29 Trichloroethene ND 40.0 40.58 ug/L 101 67 -121 0 23 Trichlorofluoromethane ND 40.0 22.99 ug/L 57 32 -157 3 35 Vinyl chloride ND 40.0 46.69 ug/L 117 47 -147 0 25 m-Xylene & p-Xylene ND 40.0 41.71 ug/L 104 61 -128 1 21 o-Xylene ND 40.0 41.69 ug/L 104 64 -120 0 23 1,2-Dibromoethane ND 40.0 39.33 ug/L 98 55 -146 5 30 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 95 MSD MSD Qualifier Limits%Recovery 103Toluene-d8 (Surr)53 -124 1004-Bromofluorobenzene (Surr)49 -118 100Dibromofluoromethane (Surr)60 -132 Client Sample ID: Method BlankLab Sample ID: MB 180-379918/14 Matrix: Water Prep Type: Total/NA Analysis Batch: 379918 RL MDL Acetone ND 20.0 ug/L 11/23/21 14:29 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 11/23/21 14:29 1Benzene ND 5.00 ug/L 11/23/21 14:29 1Chlorobromomethane ND 5.00 ug/L 11/23/21 14:29 1Dichlorobromomethane ND 5.00 ug/L 11/23/21 14:29 1Bromoform ND 5.00 ug/L 11/23/21 14:29 1Bromomethane ND 5.00 ug/L 11/23/21 14:29 12-Butanone (MEK) ND 5.00 ug/L 11/23/21 14:29 1Carbon disulfide ND 5.00 ug/L 11/23/21 14:29 1Carbon tetrachloride ND 5.00 ug/L 11/23/21 14:29 1Chlorobenzene ND 5.00 ug/L 11/23/21 14:29 1Chlorodibromomethane ND 5.00 ug/L 11/23/21 14:29 1Chloroethane ND 5.00 ug/L 11/23/21 14:29 1Chloroform ND 5.00 ug/L 11/23/21 14:29 1Chloromethane ND 5.00 ug/L 11/23/21 14:29 1Cyclohexane ND 5.00 ug/L 11/23/21 14:29 11,2-Dibromo-3-Chloropropane Eurofins TestAmerica, Pittsburgh Page 127 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 180-379918/14 Matrix: Water Prep Type: Total/NA Analysis Batch: 379918 RL MDL 1,2-Dichlorobenzene ND 5.00 ug/L 11/23/21 14:29 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResult Qualifier ND 5.00 ug/L 11/23/21 14:29 11,3-Dichlorobenzene ND 5.00 ug/L 11/23/21 14:29 11,4-Dichlorobenzene ND 5.00 ug/L 11/23/21 14:29 1Dichlorodifluoromethane ND 5.00 ug/L 11/23/21 14:29 11,1-Dichloroethane ND 5.00 ug/L 11/23/21 14:29 11,2-Dichloroethane ND 5.00 ug/L 11/23/21 14:29 1cis-1,2-Dichloroethene ND 5.00 ug/L 11/23/21 14:29 1trans-1,2-Dichloroethene ND 5.00 ug/L 11/23/21 14:29 11,1-Dichloroethene ND 5.00 ug/L 11/23/21 14:29 11,2-Dichloropropane ND 5.00 ug/L 11/23/21 14:29 1cis-1,3-Dichloropropene ND 5.00 ug/L 11/23/21 14:29 1trans-1,3-Dichloropropene ND 1000 ug/L 11/23/21 14:29 11,4-Dioxane ND 5.00 ug/L 11/23/21 14:29 1Ethylbenzene ND 5.00 ug/L 11/23/21 14:29 12-Hexanone ND 5.00 ug/L 11/23/21 14:29 1Isopropylbenzene ND 25.0 ug/L 11/23/21 14:29 1Methyl acetate ND 5.00 ug/L 11/23/21 14:29 1Methylcyclohexane ND 5.00 ug/L 11/23/21 14:29 1Methylene Chloride ND 5.00 ug/L 11/23/21 14:29 14-Methyl-2-pentanone (MIBK) ND 5.00 ug/L 11/23/21 14:29 1Methyl tert-butyl ether ND 5.00 ug/L 11/23/21 14:29 1Styrene ND 5.00 ug/L 11/23/21 14:29 11,1,2,2-Tetrachloroethane ND 5.00 ug/L 11/23/21 14:29 1Tetrachloroethene ND 5.00 ug/L 11/23/21 14:29 1Toluene ND 5.00 ug/L 11/23/21 14:29 11,2,3-Trichlorobenzene ND 5.00 ug/L 11/23/21 14:29 11,2,4-Trichlorobenzene ND 5.00 ug/L 11/23/21 14:29 11,1,1-Trichloroethane ND 5.00 ug/L 11/23/21 14:29 11,1,2-Trichloroethane ND 5.00 ug/L 11/23/21 14:29 1Trichloroethene ND 5.00 ug/L 11/23/21 14:29 1Trichlorofluoromethane ND 5.00 ug/L 11/23/21 14:29 11,1,2-Trichlorotrifluoroethane ND 5.00 ug/L 11/23/21 14:29 1Vinyl chloride ND 5.00 ug/L 11/23/21 14:29 1m-Xylene & p-Xylene ND 5.00 ug/L 11/23/21 14:29 1o-Xylene ND 5.00 ug/L 11/23/21 14:29 11,2-Dibromoethane 1,2-Dichloroethane-d4 (Surr)147 52 -151 11/23/21 14:29 1 MB MB Surrogate Dil FacPrepared AnalyzedQualifier Limits%Recovery 96 11/23/21 14:29 1Toluene-d8 (Surr)53 -124 104 11/23/21 14:29 14-Bromofluorobenzene (Surr)49 -118 108 11/23/21 14:29 1Dibromofluoromethane (Surr)60 -132 Eurofins TestAmerica, Pittsburgh Page 128 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-379918/7 Matrix: Water Prep Type: Total/NA Analysis Batch: 379918 Acetone 10.0 13.57 J ug/L 136 29 -163 Analyte LCS LCS DUnitResult Qualifier %Rec Spike Added %Rec Limits Benzene 10.0 8.167 ug/L 82 68 -122 Chlorobromomethane 10.0 9.659 ug/L 97 59 -133 Dichlorobromomethane 10.0 9.584 ug/L 96 63 -132 Bromoform 10.0 10.95 ug/L 110 31 -164 Bromomethane 10.0 7.992 ug/L 80 20 -170 2-Butanone (MEK)10.0 12.11 ug/L 121 35 -158 Carbon disulfide 10.0 7.861 ug/L 79 32 -139 Carbon tetrachloride 10.0 8.294 ug/L 83 60 -135 Chlorobenzene 10.0 8.942 ug/L 89 72 -123 Chlorodibromomethane 10.0 10.57 ug/L 106 51 -144 Chloroethane 10.0 7.279 ug/L 73 10 -170 Chloroform 10.0 9.202 ug/L 92 62 -121 Chloromethane 10.0 7.126 ug/L 71 37 -170 1,2-Dibromo-3-Chloropropane 10.0 15.19 ug/L 152 10 -170 1,2-Dichlorobenzene 10.0 10.04 ug/L 100 68 -116 1,3-Dichlorobenzene 10.0 9.994 ug/L 100 70 -119 1,4-Dichlorobenzene 10.0 10.13 ug/L 101 74 -117 Dichlorodifluoromethane 10.0 7.823 ug/L 78 21 -165 1,1-Dichloroethane 10.0 8.962 ug/L 90 59 -125 1,2-Dichloroethane 10.0 9.248 ug/L 92 57 -149 cis-1,2-Dichloroethene 10.0 8.995 ug/L 90 64 -122 trans-1,2-Dichloroethene 10.0 8.609 ug/L 86 62 -126 1,1-Dichloroethene 10.0 7.481 ug/L 75 49 -132 1,2-Dichloropropane 10.0 9.085 ug/L 91 65 -129 cis-1,3-Dichloropropene 10.0 9.476 ug/L 95 53 -140 trans-1,3-Dichloropropene 10.0 10.39 ug/L 104 57 -137 Ethylbenzene 10.0 8.655 ug/L 87 66 -122 2-Hexanone 10.0 14.63 ug/L 146 38 -157 Isopropylbenzene 10.0 8.935 ug/L 89 54 -130 Methylene Chloride 10.0 9.189 ug/L 92 51 -137 4-Methyl-2-pentanone (MIBK)10.0 11.14 ug/L 111 29 -167 Methyl tert-butyl ether 10.0 9.636 ug/L 96 36 -141 Styrene 10.0 8.285 ug/L 83 68 -127 1,1,2,2-Tetrachloroethane 10.0 9.055 ug/L 91 47 -147 Tetrachloroethene 10.0 9.480 ug/L 95 60 -129 Toluene 10.0 9.319 ug/L 93 67 -128 1,2,3-Trichlorobenzene 10.0 16.56 ug/L 166 10 -170 1,2,4-Trichlorobenzene 10.0 11.29 ug/L 113 15 -169 1,1,1-Trichloroethane 10.0 8.869 ug/L 89 64 -133 1,1,2-Trichloroethane 10.0 10.31 ug/L 103 59 -137 Trichloroethene 10.0 8.599 ug/L 86 67 -121 Trichlorofluoromethane 10.0 7.597 ug/L 76 32 -157 Vinyl chloride 10.0 6.917 ug/L 69 47 -147 m-Xylene & p-Xylene 10.0 8.616 ug/L 86 61 -128 o-Xylene 10.0 8.239 ug/L 82 64 -120 1,2-Dibromoethane 10.0 10.24 ug/L 102 55 -146 Eurofins TestAmerica, Pittsburgh Page 129 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 180-379918/7 Matrix: Water Prep Type: Total/NA Analysis Batch: 379918 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 114 LCS LCS Qualifier Limits%Recovery 110Toluene-d8 (Surr)53 -124 964-Bromofluorobenzene (Surr)49 -118 105Dibromofluoromethane (Surr)60 -132 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 180-379918/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 379918 Acetone 10.0 20.93 *+ *1 ug/L 209 29 -163 43 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 10.0 9.401 ug/L 94 68 -122 14 21 Chlorobromomethane 10.0 10.94 ug/L 109 59 -133 12 26 Dichlorobromomethane 10.0 10.65 ug/L 106 63 -132 11 24 Bromoform 10.0 12.07 ug/L 121 31 -164 10 35 Bromomethane 10.0 9.334 ug/L 93 20 -170 15 30 2-Butanone (MEK)10.0 13.36 ug/L 134 35 -158 10 35 Carbon disulfide 10.0 9.307 ug/L 93 32 -139 17 25 Carbon tetrachloride 10.0 9.700 ug/L 97 60 -135 16 25 Chlorobenzene 10.0 9.925 ug/L 99 72 -123 10 19 Chlorodibromomethane 10.0 11.46 ug/L 115 51 -144 8 25 Chloroethane 10.0 8.601 ug/L 86 10 -170 17 29 Chloroform 10.0 10.45 ug/L 104 62 -121 13 22 Chloromethane 10.0 8.521 ug/L 85 37 -170 18 28 1,2-Dibromo-3-Chloropropane 10.0 14.92 ug/L 149 10 -170 2 35 1,2-Dichlorobenzene 10.0 11.00 ug/L 110 68 -116 9 20 1,3-Dichlorobenzene 10.0 10.97 ug/L 110 70 -119 9 18 1,4-Dichlorobenzene 10.0 11.13 ug/L 111 74 -117 9 17 Dichlorodifluoromethane 10.0 9.009 ug/L 90 21 -165 14 26 1,1-Dichloroethane 10.0 10.27 ug/L 103 59 -125 14 20 1,2-Dichloroethane 10.0 10.21 ug/L 102 57 -149 10 27 cis-1,2-Dichloroethene 10.0 10.38 ug/L 104 64 -122 14 22 trans-1,2-Dichloroethene 10.0 9.926 ug/L 99 62 -126 14 23 1,1-Dichloroethene 10.0 9.068 ug/L 91 49 -132 19 23 1,2-Dichloropropane 10.0 10.01 ug/L 100 65 -129 10 23 cis-1,3-Dichloropropene 10.0 10.70 ug/L 107 53 -140 12 26 trans-1,3-Dichloropropene 10.0 11.23 ug/L 112 57 -137 8 25 Ethylbenzene 10.0 9.665 ug/L 97 66 -122 11 22 2-Hexanone 10.0 17.24 *+ ug/L 172 38 -157 16 35 Isopropylbenzene 10.0 10.61 ug/L 106 54 -130 17 22 Methylene Chloride 10.0 10.70 ug/L 107 51 -137 15 35 4-Methyl-2-pentanone (MIBK)10.0 11.92 ug/L 119 29 -167 7 35 Methyl tert-butyl ether 10.0 10.49 ug/L 105 36 -141 8 35 Styrene 10.0 9.340 ug/L 93 68 -127 12 22 1,1,2,2-Tetrachloroethane 10.0 10.11 ug/L 101 47 -147 11 35 Tetrachloroethene 10.0 10.23 ug/L 102 60 -129 8 22 Toluene 10.0 10.23 ug/L 102 67 -128 9 22 1,2,3-Trichlorobenzene 10.0 16.51 ug/L 165 10 -170 0 35 Eurofins TestAmerica, Pittsburgh Page 130 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Sample Results Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. Method: EPA 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 180-379918/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 379918 1,2,4-Trichlorobenzene 10.0 12.34 ug/L 123 15 -169 9 35 Analyte LCSD LCSD DUnitResult Qualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,1,1-Trichloroethane 10.0 10.33 ug/L 103 64 -133 15 22 1,1,2-Trichloroethane 10.0 11.25 ug/L 112 59 -137 9 29 Trichloroethene 10.0 9.798 ug/L 98 67 -121 13 23 Trichlorofluoromethane 10.0 8.955 ug/L 90 32 -157 16 35 Vinyl chloride 10.0 8.019 ug/L 80 47 -147 15 25 m-Xylene & p-Xylene 10.0 9.556 ug/L 96 61 -128 10 21 o-Xylene 10.0 9.391 ug/L 94 64 -120 13 23 1,2-Dibromoethane 10.0 10.94 ug/L 109 55 -146 7 30 1,2-Dichloroethane-d4 (Surr)52 -151 Surrogate 118 LCSD LCSD Qualifier Limits%Recovery 114Toluene-d8 (Surr)53 -124 1064-Bromofluorobenzene (Surr)49 -118 111Dibromofluoromethane (Surr)60 -132 Eurofins TestAmerica, Pittsburgh Page 131 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Association Summary Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA Analysis Batch: 379027 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-129623-7 MW-2 Total/NA Water EPA 8260D180-129623-8 MW-11I Total/NA Water EPA 8260D180-129623-9 MW-11 Total/NA Water EPA 8260D180-129623-10 MW-2a Total/NA Water EPA 8260D180-129623-11 MW-2I Total/NA Water EPA 8260D180-129623-12 MW-17I Total/NA Water EPA 8260D180-129623-13 MW-17I-c Total/NA Water EPA 8260DMB 180-379027/5 Method Blank Total/NA Water EPA 8260DLCS 180-379027/3 Lab Control Sample Total/NA Water EPA 8260D180-129471-E-2 MS Matrix Spike Total/NA Water EPA 8260D180-129471-E-2 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 379033 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-129623-1 B-1 Total/NA Water EPA 8260D180-129623-2 B-3 Total/NA Water EPA 8260D180-129623-3 MW-5 Total/NA Water EPA 8260D180-129623-4 MW-5I Total/NA Water EPA 8260D180-129623-5 MW-3 Total/NA Water EPA 8260D180-129623-6 MW-3I Total/NA Water EPA 8260DMB 180-379033/10 Method Blank Total/NA Water EPA 8260DLCS 180-379033/4 Lab Control Sample Total/NA Water EPA 8260DLCSD 180-379033/5 Lab Control Sample Dup Total/NA Analysis Batch: 379192 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-129621-1 MW-20I Total/NA Water EPA 8260D180-129621-2 MW-14I Total/NA Water EPA 8260D180-129621-3 MW-14 Total/NA Water EPA 8260D180-129621-4 MW-15I Total/NA Water EPA 8260D180-129621-5 MW-15 Total/NA Water EPA 8260D180-129621-6 MW-15-c Total/NA Water EPA 8260D180-129621-7 MW-9 Total/NA Water EPA 8260D180-129621-8 MW-9I Total/NA Water EPA 8260D180-129621-9 MW-9I-a Total/NA Water EPA 8260D180-129621-10 MW-10 Total/NA Water EPA 8260D180-129621-11 MW-10I Total/NA Water EPA 8260D180-129621-12 MW-7I Total/NA Water EPA 8260D180-129621-13 MW-7 Total/NA Water EPA 8260D180-129623-7 - RA MW-2 Total/NA Water EPA 8260D180-129623-10 - RA MW-2a Total/NA Water EPA 8260D180-129623-11 - RA MW-2I Total/NA Water EPA 8260D180-129623-12 - RA MW-17I Total/NA Water EPA 8260D180-129623-13 - RA MW-17I-c Total/NA Water EPA 8260DMB 180-379192/10 Method Blank Total/NA Water EPA 8260DLCS 180-379192/8 Lab Control Sample Total/NA Water EPA 8260D180-129621-13 MS MW-7 Total/NA Water EPA 8260D180-129621-13 MSD MW-7 Total/NA Water EPA 8260D180-129621-A-13 MS Matrix Spike Total/NA Water EPA 8260D180-129621-B-13 MSD Matrix Spike Duplicate Total/NA Eurofins TestAmerica, Pittsburgh Page 132 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Association Summary Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA Analysis Batch: 379327 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-129668-1 MW-6I Total/NA Water EPA 8260D180-129668-2 MW-6 Total/NA Water EPA 8260D180-129668-3 MW-4 Total/NA Water EPA 8260D180-129668-4 MW-4I Total/NA Water EPA 8260D180-129668-5 MW-16 Total/NA Water EPA 8260D180-129668-6 MW-19I Total/NA Water EPA 8260D180-129668-7 MW-18I Total/NA Water EPA 8260D180-129668-8 MW-12 Total/NA Water EPA 8260D180-129668-9 MW-12I Total/NA Water EPA 8260D180-129668-10 MW-13I Total/NA Water EPA 8260D180-129668-11 MW-13I-c Total/NA Water EPA 8260D180-129668-12 MW-13 Total/NA Water EPA 8260D180-129668-13 MW-8 Total/NA Water EPA 8260D180-129668-14 MW-8-A Total/NA Water EPA 8260DMB 180-379327/5 Method Blank Total/NA Water EPA 8260DLCS 180-379327/3 Lab Control Sample Total/NA Water EPA 8260D180-129668-12 MS MW-13 Total/NA Water EPA 8260D180-129668-12 MSD MW-13 Total/NA Analysis Batch: 379481 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-129668-9 - DL MW-12I Total/NA Water EPA 8260DMB 180-379481/5 Method Blank Total/NA Water EPA 8260DLCS 180-379481/3 Lab Control Sample Total/NA Water EPA 8260D180-130169-G-1 MS Matrix Spike Total/NA Water EPA 8260D180-130169-G-1 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 379918 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water EPA 8260D180-129621-2 - RADL MW-14I Total/NA Water EPA 8260D180-129621-4 - RA MW-15I Total/NA Water EPA 8260D180-129621-6 - RA MW-15-c Total/NA Water EPA 8260D180-129621-7 - RADL MW-9 Total/NA Water EPA 8260D180-129621-8 - RADL MW-9I Total/NA Water EPA 8260D180-129621-9 - RADL MW-9I-a Total/NA Water EPA 8260D180-129621-10 - RADL MW-10 Total/NA Water EPA 8260D180-129621-11 - RADL MW-10I Total/NA Water EPA 8260D180-129621-12 - RA MW-7I Total/NA Water EPA 8260DMB 180-379918/14 Method Blank Total/NA Water EPA 8260DLCS 180-379918/7 Lab Control Sample Total/NA Water EPA 8260DLCSD 180-379918/8 Lab Control Sample Dup Total/NA Analysis Batch: 555304 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM180-129623-1 B-1 Total/NA Water 8260D SIM180-129623-2 B-3 Total/NA Water 8260D SIM180-129623-3 MW-5 Total/NA Water 8260D SIM180-129623-4 MW-5I Total/NA Water 8260D SIM180-129623-5 MW-3 Total/NA Water 8260D SIM180-129623-6 MW-3I Total/NA Water 8260D SIM180-129623-7 MW-2 Total/NA Eurofins TestAmerica, Pittsburgh Page 133 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 QC Association Summary Job ID: 180-129621-1Client: ERM-West Project/Site: EDO Western Corp. GC/MS VOA (Continued) Analysis Batch: 555304 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM180-129623-8 MW-11I Total/NA Water 8260D SIM180-129623-9 MW-11 Total/NA Water 8260D SIM180-129623-10 MW-2a Total/NA Water 8260D SIM180-129623-11 MW-2I Total/NA Water 8260D SIM180-129623-12 MW-17I Total/NA Water 8260D SIM180-129623-13 MW-17I-c Total/NA Water 8260D SIMMB 400-555304/12 Method Blank Total/NA Water 8260D SIMLCS 400-555304/1003 Lab Control Sample Total/NA Water 8260D SIM180-129623-1 MS B-1 Total/NA Water 8260D SIM180-129623-1 MSD B-1 Total/NA Analysis Batch: 555446 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM180-129621-1 MW-20I Total/NA Water 8260D SIM180-129621-2 MW-14I Total/NA Water 8260D SIM180-129621-3 MW-14 Total/NA Water 8260D SIM180-129621-4 MW-15I Total/NA Water 8260D SIM180-129621-5 MW-15 Total/NA Water 8260D SIM180-129621-6 MW-15-c Total/NA Water 8260D SIM180-129621-7 MW-9 Total/NA Water 8260D SIM180-129621-8 MW-9I Total/NA Water 8260D SIM180-129621-9 MW-9I-a Total/NA Water 8260D SIM180-129621-10 MW-10 Total/NA Water 8260D SIM180-129621-11 MW-10I Total/NA Water 8260D SIM180-129621-12 MW-7I Total/NA Water 8260D SIM180-129621-13 MW-7 Total/NA Water 8260D SIM180-129668-1 MW-6I Total/NA Water 8260D SIM180-129668-2 MW-6 Total/NA Water 8260D SIM180-129668-3 MW-4 Total/NA Water 8260D SIM180-129668-4 MW-4I Total/NA Water 8260D SIM180-129668-5 MW-16 Total/NA Water 8260D SIM180-129668-6 MW-19I Total/NA Water 8260D SIM180-129668-7 MW-18I Total/NA Water 8260D SIMMB 400-555446/5 Method Blank Total/NA Water 8260D SIMLCS 400-555446/1003 Lab Control Sample Total/NA Water 8260D SIM180-129621-D-13 MS Matrix Spike Total/NA Water 8260D SIM180-129621-D-13 MSD Matrix Spike Duplicate Total/NA Analysis Batch: 556104 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D SIM180-129668-8 MW-12 Total/NA Water 8260D SIM180-129668-9 MW-12I Total/NA Water 8260D SIM180-129668-10 MW-13I Total/NA Water 8260D SIM180-129668-11 MW-13I-c Total/NA Water 8260D SIM180-129668-12 MW-13 Total/NA Water 8260D SIM180-129668-13 MW-8 Total/NA Water 8260D SIM180-129668-14 MW-8-A Total/NA Water 8260D SIMMB 400-556104/5 Method Blank Total/NA Water 8260D SIMLCS 400-556104/1003 Lab Control Sample Total/NA Eurofins TestAmerica, Pittsburgh Page 134 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Page 135 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Page 136 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 Login Sample Receipt Checklist Client: ERM-West Job Number: 180-129621-1 Login Number: 129621 Question Answer Comment Creator: Watson, Debbie List Source: Eurofins Pittsburgh List Number: 1 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. TrueThe cooler's custody seal, if present, is intact. TrueSample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded. TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. TrueSample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Pittsburgh Page 137 of 137 9/6/2022 (Rev. 1) 1 2 3 4 5 6 7 8 9 10 11 12 13 APPENDIX D MICROBIAL INSIGHTS BIO-TRAP® QUANTARRAY®-CHLOR STUDY REPORT 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com SITE LOGIC Report QuantArray®-Chlor Study Contact:Justin Dauphinais Phone:925-946-0455 Address:ERM 1277 Treat Blvd Email:justin.dauphinais@erm.com Suite 500 Walnut Creek, CA 94597 MI Identiﬁer:079TF Report Date:06/29/2022 Project:L3 Harris, 600676 Comments: NOTICE:This report is intended only for the addressee shown above and may contain conﬁdential or privileged information. If the recipient of this material is not the intended recipient or if you have received this in error, please notify Microbial Insights, Inc. immediately. The data and other information in this report represent only the sample(s) analyzed and are rendered upon condition that it is not to be reproduced without approval from Microbial Insights, Inc. Thank you for your cooperation. The QuantArray®-Chlor Approach Quantiﬁcation of Dehalococcoides, the only known bacterial group capable of complete reductive dechlorination of PCE and TCE to ethene, has become an indispensable component of assessment, remedy selection, and performance monitoring at sites impacted by chlorinated solvents. While undeniably a key group of halorespiring bacteria,Dehalococcoides are not the only bacteria of interest in the subsurface because reductive dechlorination is not the only potential biodegradation pathway operative at contaminated sites, and chlorinated ethenes are not always the primary contaminants of concern. The QuantArray®-Chlor not only includes a variety of halorespiring bacteria (Dehalococcoides,Dehalobacter,Dehalogenimonas, etc.) to assess the potential for reductive dechlorination of chloroethenes, chloroethanes, chlorobenzenes, chlorophenols, and chloroform, but also provides quantiﬁcation of functional genes involved in aerobic (co)metabolic pathways for biodegradation of chlorinated solvents and even competing biological processes. Thus, the QuantArray®-Chlor will give site managers the ability to simultaneously yet economically evaluate the potential for biodegradation of a spectrum of common chlorinated contaminants through a multitude of anaerobic and aerobic (co) metabolic pathways to give a much more clear and comprehensive view of contaminant biodegradation. The QuantArray®-Chlor is used to quantify speciﬁc microorganisms and functional genes to evaluate the following: Quantiﬁcation of important halorespiring bacteria (e.g.Dehalococcoides, Dehalobacter,Dehalogenimonas,Desulﬁtobacterium spp.) and key functional genes (e.g. vinyl chloride reductases, TCE reductase, chloroform reduc- tase) responsible for reductive dechlorination of a broad spectrum of chlorinated solvents. Several different types of bacteria including methanotrophs and some toluene/phenol utilizing bacteria can co-oxidize TCE, DCE, and vinyl chloride. The QuantArray®-Chlor quantiﬁes functional genes like soluble methane monooxygenase encoding enzymes capable of co-oxidation of chlorinated ethenes. Ethene oxidizing bacteria are capable of cometabolism of vinyl chloride. In some cases, ethenotrophs can also utilize vinyl chloride as a growth supporting substrate. The QuantArray®-Chlor targets key functional genes in ethene metabolism. Anaerobic Reductive Dechlorination Aerobic Cometabolism Aerobic (Co)metabolism of Vinyl Chloride How do QuantArrays®work? The QuantArray®-Chlor in many respects is a hybrid technology combining the highly parallel detection of mi- croarrays with the accurate and precise quantiﬁcation provided by qPCR into a single platform. The key to highly parallel qPCR reactions is the nanoliter ﬂuidics platform for low volume, solution phase qPCR reactions. 1 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com How are QuantArray®results reported? One of the primary advantages of the QuantArray®-Chlor is the simultaneous quantiﬁcation of a broad spectrum of different microorganisms and key functional genes involved in a variety of pathways for chlorinated hydrocarbon biodegradation. However, highly parallel quantiﬁcation combined with the various metabolic and cometabolic capabilities of different target organisms can complicate data presentation. Therefore, in addition to Summary Tables, QuantArray®results will be presented as Microbial Population Summary and Comparison Figures to aid in data interpretation and subsequent evaluation of site management activities. Types of Tables and Figures: Figure presenting the concentrations of QuantArray®-Chlor target pop- ulations (e.g.Dehalococcoides) and functional genes (e.g. vinyl chloride reductase) relative to typically observed values. Tables of target population concentrations grouped by biodegradation pathway and contaminant type. Depending on the project, sample results can be presented to compare changes over time or examine differences in microbial populations along a transect of the dissolved plume. Microbial Population Summary Summary Tables Comparison Figures 2 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com Results Table 1:Summary of the QuantArray®-Chlor results obtained for samples MW-9I-BT, MW-14I-BT, and MW-19I-BT. Sample Name MW-9I-BT MW-14I-BT MW-19I-BT Sample Date 06/20/2022 06/20/2022 06/20/2022 Reductive Dechlorination cells/bead cells/bead cells/bead Dehalococcoides (DHC)5.30E+00 (J) 1.62E+01 (J)<2.50E+01 tceA Reductase (TCE)<2.50E+01 <2.50E+01 <2.50E+01 BAV1 Vinyl Chloride Reductase (BVC)<2.50E+01 <2.50E+01 <2.50E+01 Vinyl Chloride Reductase (VCR)<2.50E+01 7.30E+00 (J)<2.50E+01 Dehalobacter spp. (DHBt)8.35E+03 2.58E+05 2.68E+05 Dehalobacter DCM (DCM)<2.50E+02 1.57E+03 <2.50E+02 Dehalogenimonas spp. (DHG)<2.50E+02 3.25E+04 <2.50E+02 cerA Reductase (CER)<2.50E+02 <2.50E+02 <2.50E+02 trans-1,2-DCE Reductase (TDR)<2.50E+02 <2.50E+02 <2.50E+02 Desulﬁtobacterium spp. (DSB)4.16E+04 3.52E+05 3.89E+05 Dehalobium chlorocoercia (DECO)<2.50E+02 1.91E+04 <2.50E+02 Desulfuromonas spp. (DSM)1.98E+03 1.99E+03 1.18E+04 PCE Reductase (PCE-1)<2.50E+02 <2.50E+02 <2.50E+02 PCE Reductase (PCE-2)<2.50E+02 <2.50E+02 <2.50E+02 Chloroform Reductase (CFR)<2.50E+02 <2.50E+02 <2.50E+02 1,1 DCA Reductase (DCA)<2.50E+02 <2.50E+02 <2.50E+02 1,2 DCA Reductase (DCAR)<2.50E+02 <2.50E+02 <2.50E+02 Aerobic (Co)Metabolic Soluble Methane Monooxygenase (SMMO)<2.50E+02 <2.50E+02 <2.50E+02 Toluene Dioxygenase (TOD)5.08E+02 5.53E+02 1.01E+03 Phenol Hydroxylase (PHE)9.56E+03 7.91E+04 9.27E+03 Trichlorobenzene Dioxygenase (TCBO)<2.50E+02 <2.50E+02 <2.50E+02 Toluene Monooxygenase 2 (RDEG)7.32E+03 4.77E+04 <2.50E+02 Toluene Monooxygenase (RMO)1.47E+04 <2.50E+02 8.65E+04 Ethene Monooxygenase (EtnC)<2.50E+02 <2.50E+02 <2.50E+02 Epoxyalkane Transferase (EtnE)<2.50E+02 <2.50E+02 <2.50E+02 Dichloromethane Dehalogenase (DCMA)<2.50E+02 <2.50E+02 <2.50E+02 Other Total Eubacteria (EBAC)7.42E+07 3.92E+07 3.47E+07 Sulfate Reducing Bacteria (APS)2.14E+06 1.78E+06 1.23E+06 Methanogens (MGN)<2.50E+02 2.44E+01 (J) 5.90E+00 (J) Legend: NA = Not Analyzed NS = Not Sampled J = Estimated Gene Copies Below PQL but Above LQL I = Inhibited <= Result Not Detected 3 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com Figure 1:Microbial population summary to aid in evaluating potential pathways and biodegradation of speciﬁc con- taminants. Anaerobic - Reductive Dechlorination or Dichloroelimination Aerobic - (Co)metabolism Chlorinated Ethenes (PCE, TCE)DHC, DHBt, DSB, DSM, PCE-1, PCE-2 Chlorinated Ethenes (TCE,DCE,VC)sMMO, TOD, PHE, RDEG, RMO Chlorinated Ethenes (PCE, TCE, DCE, VC) DHC, BVC, VCR (Co)metabolic Vinyl Chloride etnC, etnE Chlorinated Ethenes (trans-1,2-DCE, VC) TDR, CER Chlorinated Benzenes TOD, TCBO, PHE Chlorinated Ethanes (TCA and 1,2- DCA) DHC, DHBt, DHG, DSB1 , DCA, DCAR Chlorinated Methanes (Chloroform)DHBt, DCM, CFR Chlorinated Benzenes DHC, DHBt2 , DECO Chlorinated Phenols DHC, DSB Chlorinated Propanes DHC, DHG, DSB1 1 Desulﬁtobacterium dichloroeliminans DCA1.2 Implicated in reductive dechlorination of dichlorobenzene and potentially chlorobenzene. 4 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com Figure 2:Microbial population summary to aid in evaluating potential pathways and biodegradation of speciﬁc con- taminants. Anaerobic - Reductive Dechlorination or Dichloroelimination Aerobic - (Co)metabolism Chlorinated Ethenes (PCE, TCE)DHC, DHBt, DSB, DSM, PCE-1, PCE-2 Chlorinated Ethenes (TCE,DCE,VC)sMMO, TOD, PHE, RDEG, RMO Chlorinated Ethenes (PCE, TCE, DCE, VC) DHC, BVC, VCR (Co)metabolic Vinyl Chloride etnC, etnE Chlorinated Ethenes (trans-1,2-DCE, VC) TDR, CER Chlorinated Benzenes TOD, TCBO, PHE Chlorinated Ethanes (TCA and 1,2- DCA) DHC, DHBt, DHG, DSB1 , DCA, DCAR Chlorinated Methanes (Chloroform)DHBt, DCM, CFR Chlorinated Benzenes DHC, DHBt2 , DECO Chlorinated Phenols DHC, DSB Chlorinated Propanes DHC, DHG, DSB1 1 Desulﬁtobacterium dichloroeliminans DCA1.2 Implicated in reductive dechlorination of dichlorobenzene and potentially chlorobenzene. 5 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com Figure 3:Microbial population summary to aid in evaluating potential pathways and biodegradation of speciﬁc con- taminants. Anaerobic - Reductive Dechlorination or Dichloroelimination Aerobic - (Co)metabolism Chlorinated Ethenes (PCE, TCE)DHC, DHBt, DSB, DSM, PCE-1, PCE-2 Chlorinated Ethenes (TCE,DCE,VC)sMMO, TOD, PHE, RDEG, RMO Chlorinated Ethenes (PCE, TCE, DCE, VC) DHC, BVC, VCR (Co)metabolic Vinyl Chloride etnC, etnE Chlorinated Ethenes (trans-1,2-DCE, VC) TDR, CER Chlorinated Benzenes TOD, TCBO, PHE Chlorinated Ethanes (TCA and 1,2- DCA) DHC, DHBt, DHG, DSB1 , DCA, DCAR Chlorinated Methanes (Chloroform)DHBt, DCM, CFR Chlorinated Benzenes DHC, DHBt2 , DECO Chlorinated Phenols DHC, DSB Chlorinated Propanes DHC, DHG, DSB1 1 Desulﬁtobacterium dichloroeliminans DCA1.2 Implicated in reductive dechlorination of dichlorobenzene and potentially chlorobenzene. 6 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com Table 2:Summary of the QuantArray®-Chlor results for microorganisms responsible for reductive dechlorination for samples MW-9I-BT, MW-14I-BT, and MW-19I-BT. Sample Name MW-9I-BT MW-14I-BT MW-19I-BT Sample Date 06/20/2022 06/20/2022 06/20/2022 Reductive Dechlorination cells/bead cells/bead cells/bead Dehalococcoides (DHC)5.30E+00 (J) 1.62E+01 (J)<2.50E+01 tceA Reductase (TCE)<2.50E+01 <2.50E+01 <2.50E+01 BAV1 Vinyl Chloride Reductase (BVC)<2.50E+01 <2.50E+01 <2.50E+01 Vinyl Chloride Reductase (VCR)<2.50E+01 7.30E+00 (J)<2.50E+01 Dehalobacter spp. (DHBt)8.35E+03 2.58E+05 2.68E+05 Dehalobacter DCM (DCM)<2.50E+02 1.57E+03 <2.50E+02 Dehalogenimonas spp. (DHG)<2.50E+02 3.25E+04 <2.50E+02 Desulﬁtobacterium spp. (DSB)4.16E+04 3.52E+05 3.89E+05 Dehalobium chlorocoercia (DECO)<2.50E+02 1.91E+04 <2.50E+02 Desulfuromonas spp. (DSM)1.98E+03 1.99E+03 1.18E+04 Figure 4:Comparison - microbial populations involved in reductive dechlorination. 7 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com Table 3:Summary of the QuantArray®-Chlor results for microorganisms responsible for reductive dechlorination for samples MW-9I-BT, MW-14I-BT, and MW-19I-BT. Sample Name MW-9I-BT MW-14I-BT MW-19I-BT Sample Date 06/20/2022 06/20/2022 06/20/2022 Reductive Dechlorination cells/bead cells/bead cells/bead Chloroform Reductase (CFR)<2.50E+02 <2.50E+02 <2.50E+02 1,1 DCA Reductase (DCA)<2.50E+02 <2.50E+02 <2.50E+02 1,2 DCA Reductase (DCAR)<2.50E+02 <2.50E+02 <2.50E+02 PCE Reductase (PCE-1)<2.50E+02 <2.50E+02 <2.50E+02 PCE Reductase (PCE-2)<2.50E+02 <2.50E+02 <2.50E+02 Dehalogenimonas trans-1,2-DCE Reductase (TDR)<2.50E+02 <2.50E+02 <2.50E+02 Dehalogenimonas cerA Reductase (CER)<2.50E+02 <2.50E+02 <2.50E+02 Figure 5:Comparison - microbial populations involved in reductive dechlorination. 8 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com Table 4:Summary of the QuantArray®-Chlor results for microorganisms responsible for aerobic (co)metabolism for samples MW-9I-BT, MW-14I-BT, and MW-19I-BT. Sample Name MW-9I-BT MW-14I-BT MW-19I-BT Sample Date 06/20/2022 06/20/2022 06/20/2022 Aerobic (Co)Metabolic cells/bead cells/bead cells/bead Soluble Methane Monooxygenase (SMMO)<2.50E+02 <2.50E+02 <2.50E+02 Toluene Dioxygenase (TOD)5.08E+02 5.53E+02 1.01E+03 Phenol Hydroxylase (PHE)9.56E+03 7.91E+04 9.27E+03 Trichlorobenzene Dioxygenase (TCBO)<2.50E+02 <2.50E+02 <2.50E+02 Toluene Monooxygenase 2 (RDEG)7.32E+03 4.77E+04 <2.50E+02 Toluene Monooxygenase (RMO)1.47E+04 <2.50E+02 8.65E+04 Ethene Monooxygenase (EtnC)<2.50E+02 <2.50E+02 <2.50E+02 Epoxyalkane Transferase (EtnE)<2.50E+02 <2.50E+02 <2.50E+02 Dichloromethane Dehalogenase (DCMA)<2.50E+02 <2.50E+02 <2.50E+02 Figure 6:Comparison - microbial populations involved in aerobic (co)metabolism. 9 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com Table 5:Summary of the QuantArray®results for total bacteria and other populations for samples MW-9I-BT, MW-14I- BT, and MW-19I-BT. Sample Name MW-9I-BT MW-14I-BT MW-19I-BT Sample Date 06/20/2022 06/20/2022 06/20/2022 Other cells/bead cells/bead cells/bead Total Eubacteria (EBAC)7.42E+07 3.92E+07 3.47E+07 Sulfate Reducing Bacteria (APS)2.14E+06 1.78E+06 1.23E+06 Methanogens (MGN)<2.50E+02 2.44E+01 (J) 5.90E+00 (J) Figure 7:Comparison - microbial populations. 10 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com Interpretation The overall purpose of the QuantArray®-Chlor is to give site managers the ability to simultaneously yet economically evaluate the potential for biodegradation of a spectrum of common chlorinated contaminants through a multitude of anaerobic and aerobic (co)metabolic pathways in order to provide a clearer and more comprehensive view of contaminant biodegradation. The following discussion describes the interpretation of results in general terms and is meant to serve as a guide. Reductive Dechlorination - Chlorinated Ethenes:While a number of bacterial cultures including Dehalococcoides,Dehalobacter,Desul- ﬁtobacterium, and Desulfuromonas spp. capable of utilizing PCE and TCE as growth-supporting electron acceptors have been isolated [1–5],Dehalococcoides may be the most important because they are the only bacterial group that has been isolated to date which is capable of complete reductive dechlorination of PCE to ethene [6]. In fact, the presence of Dehalococcoides has been associated with complete reductive dechlorination to ethene at sites across North America and Europe [7], and Lu et al. [8] have proposed using a Dehalococcoides concentration of 1 x 104 cells/mL as a screening criterion to identify sites where biological reductive dechlorination is predicted to proceed at “generally useful” rates. At chlorinated ethene sites, any “stall” leading to the accumulation of daughter products, especially vinyl chloride, would be a sub- stantial concern. While Dehalococcoides concentrations greater than 1 x 104 cells/mL correspond to ethene production and useful rates of dechlorination, the range of chlorinated ethenes degraded varies by strain within the Dehalococcoides genus [6, 9], and the pres- ence of co-contaminants and competitors can have complex impacts on the halorespiring microbial community [10–15]. Therefore, QuantArray®-Chlor also provides quantiﬁcation of a suite of reductive dehalogenase genes (PCE, TCE, BVC, VCR, CER, and TDR) to more deﬁnitively conﬁrm the potential for reductive dechlorination of all chlorinated ethene compounds including vinyl chloride. Perhaps most importantly, QuantArray®-Chlor quantiﬁes TCE reductase (TCE) and both known vinyl chloride reductase genes (BVC, VCR) from Dehalococcoides to conclusively evaluate the potential for complete reductive dechlorination of chlorinated ethenes to non- toxic ethene [16–18]. In addition, the analysis also includes quantiﬁcation of reductive dehalogenase genes from Dehalogenimonas spp. capable of reductive dechlorination of chlorinated ethenes. More speciﬁcally, these are the trans-1,2-DCE dehalogenase gene (TDR) from strain WBC-2 [19] and the vinyl chloride reductase gene (CER) from GP, the only known organisms other than Dehalococcoides capable of vinyl chloride reduction [20]. Finally, PCE reductase genes responsible for sequential reductive dechlorination of PCE to cis-DCE by Sulfurospirillum and Geobacter spp. are also quantiﬁed. In mixed cultures, evidence increasingly suggests that partial dechlorinators like Sulfurospirillum and Geobacter may be responsible for the majority of reductive dechlorination of PCE to TCE and cis-DCE while Dehalococcoides functions more as cis-DCE and vinyl chloride reducing specialists [10, 21]. Reductive Dechlorination - Chlorinated Ethanes:Under anaerobic conditions, chlorinated ethanes are susceptible to reductive dechlorination by several groups of halorespiring bacteria including Dehalobacter,Dehalogenimonas, and Dehalococcoides. While the reported range of chlorinated ethanes utilized varies by genus, species, and sometimes at the strain level, several general observa- tions can be made regarding biodegradation pathways and daughter product formation.Dehalobacter spp. have been isolated that are capable of sequential reductive dechlorination of 1,1,1-TCA through 1,1-DCA to chloroethane [13]. Biodegradation of 1,1,2-TCA by several halorespiring bacteria including Dehalobacter and Dehalogenimonas spp. proceeds via dichloroelimination producing vinyl chloride [22–24]. Similarly, 1,2-DCA biodegradation by Dehalobacter,Dehalogenimonas, and Dehalococcoides occurs via dichloroelimina- tion producing ethene. While not utilized by many Desulﬁtobacterium isolates, at least one strain,Desulﬁtobacterium dichloroeliminans strain DCA1, is also capable of dichloroelimination of 1,2-DCA [25]. The 1,2-dichloroethane reductive dehalogenase gene (DCAR) from members of Desulﬁtobacterium and Dehalobacter is known to dechlorinate 1,2-DCA to ethene, while the 1,1-dichloroethane re- ductive dehalogenase (DCA) targets the gene responsible for 1,1-DCA dechlorination in some strains of Dehalobacter. In addition to chloroform,chloroform reductase (CFR) has also been shown to be responsible for reductivedechlorination of 1,1,1-TCA [26]. Reductive Dechlorination - Chlorinated Methanes:Chloroform is a common co-contaminant at chlorinated solvent sites and can inhibit reductive dechlorination of chlorinated ethenes. Grostern et al. demonstrated that a Dehalobacter population was capable of reductive dechlorination of chloroform to produce dichloromethane [27]. The cfrA gene encodes the reductase which catalyzes this initial step in chloroform biodegradation [26]. Justicia-Leon et al. have since shown that dichloromethane can support growth of a distinct group of Dehalobacter strains via fermentation [28]. The Dehalobacter DCM assay targets the 16S rRNA gene of these strains. Reductive Dechlorination - Chlorinated Benzenes:Chlorinated benzenes are an important class of industrial solvents and chem- ical intermediates in the production of drugs, dyes, herbicides, and insecticides. The physical-chemical properties of chlorinated benzenes as well as susceptibility to biodegradation are functions of their degree of chlorination and the positions of chlorine sub- stituents. Under anaerobic conditions, reductive dechlorination of higher chlorinated benzenes including hexachlorobenzene (HCB), 11 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com pentachlorobenzene (PeCB), tetrachlorobenzene (TeCB) isomers, and trichlorobenzene (TCB) isomers has been well documented [29], although biodegradation of individual compounds and isomers varies between isolates. For example,Dehalococcoides strain CBDB1 reductively dechlorinats HCB, PeCB, all three TeCB isomers, 1,2,3-TCB, and 1,2,4-TCB [9, 30].Dehalobium chlorocoercia DF-1 has been shown to be capable of reductive dechlorination of HCB, PeCB, and 1,2,3,5-TeCB [31]. The dichlorobenzene (DCB) isomers and chlorobenzene (CB) were considered relatively recalcitrant under anaerobic conditions. However, new evidence has demonstrated reductive dechlorination of DCBs to CB and CB to benzene [32] with corresponding increases in concentrations of Dehalobacter spp. [33]. Reductive Dechlorination - Chlorinated Phenols:Pentachlorophenol (PCP) was one of the most widely used biocides in the U.S. and despite residential use restrictions, is still extensively used industrially as a wood preservative. Along with PCP, the tetrachlorophenol and trichlorophenol isomers were also used as fungicides in wood preserving formulations. 2,4-Dichlorophenol and 2,4,5-TCP were used as chemical intermediates in herbicide production (e.g. 2,4-D) and chlorophenols are known byproducts of chlorine bleaching in the pulp and paper industry. While the range of compounds utilized varies by strain, some Dehalococ- coides isolates are capable of reductive dechlorination of PCP and other chlorinated phenols. For example,Dehalococcoides strain CBDB1 is capable of utilizing PCP, all three tetrachlorophenol (TeCP) congeners, all six trichlorophenol (TCP) congeners, and 2,3-dichlorophenol (2,3-DCP). PCP dechlorination by strain CBDB1 produces a mixture of 3,5-DCP, 3,4-DCP, 2,4-DCP, 3-CP, and 4-CP [34]. In the same study, however,Dehalococcoides strain 195 dechlorinated a more narrow spectrum of chlorophenols which included 2,3-DCP, 2,3,4-TCP, and 2,3,6-TCP, but no other TCPs or PCP. Similar to Dehalococcoides, some species and strains of Desulﬁtobacterium are capable of utilizing PCP and other chlorinated phenols.Desulﬁtobacterium hafniense PCP-1 is capable of reductive dechlorination of PCP to 3-CP [35]. However, the ability to biodegrade PCP is not universal among Desulﬁtobacterium isolates.Desulﬁtobacterium sp. strain PCE1 and D. chlororespirans strain Co23, for example, can utilize some TCP and DCP isomers, but not PCP for growth [2, 36]. Reductive Dechlorination - Chlorinated Propanes:Dehalogenimonas is a recently described bacterial genus of the phylum Chlo- roﬂexi which also includes the well-known chloroethene-respiring Dehalococcoides [23]. The Dehalogenimonas isolates characterized to date are also halorespiring bacteria, but utilize a rather unique range of chlorinated compounds as electron acceptors including chlo- rinated propanes (1,2,3-TCP and 1,2-DCP) and a variety of other vicinally chlorinated alkanes including 1,1,2,2-tetrachloroethane, 1,1,2-trichloroethane, and 1,2-dichloroethane [23]. Aerobic - Chlorinated Ethene Cometabolism:Under aerobic conditions, several different types of bacteria including methane- oxidizing bacteria (methanotrophs), and many benzene, toluene, ethylbenzene, xylene, and (BTEX)-utilizing bacteria can cometabolize or co-oxidize TCE, DCE, and vinyl chloride [37]. In general, cometabolism of chlorinated ethenes is mediated by monooxygenase enzymes with “relaxed’ speciﬁcity that oxidize a primary (growth supporting) substrate (e.g.methane) and co-oxidize the chlorinated compound (e.g.TCE). QuantArray®-Chlor provides quantiﬁcation of a suite of genes encoding oxygenase enzymes capable of co-oxidation of chlorinated ethenes including soluble methane monooxygenase (sMMO). Soluble methane monooxygenases co-oxidize a broad range of chlorinated compounds [38–41] including TCE,cis-DCE, and vinyl chloride. Furthermore, soluble methane monooxygenases are generally believed to support greater rates of aerobic cometabolism [40]. QuantArray®-Chlor also quantiﬁes aromatic oxygenase genes encoding ring hydroxylating toluene monooxygenase genes (RMO, RDEG), toluene dioxygenase (TOD) and phenol hydroxylases (PHE) capable of TCE co-oxidation [42–46]. TCE or a degradation product has been shown to induce expression of toluene monooxygenases in some laboratory studies [43, 47] raising the possibility of TCE cometabolism with an alternative (non-aromatic) growth substrate. Moreover, while a number of additional factors must be considered, recent research under ESTCP Project 201584 has shown positive correlations between concentrations of monooxygenase genes (soluble methane monooxygenase, ring hydroxylating monooxygenases, and phenol hydroxylase) and the rate of TCE degradation [48]. Aerobic - Chlorinated Ethane Cometabolism:While less widely studied than cometabolism of chlorinated ethenes, some chlori- nated ethanes are also susceptible to co-oxidation. As mentioned previously, soluble methane monooxygenases (sMMO) exhibit very relaxed speciﬁcity. In laboratory studies, sMMO has been shown to co-oxidize a number of chlorinated ethanes including 1,1,1-TCA and 1,2-DCA [38, 40]. Aerobic - Vinyl Chloride Cometabolism:Beginning in the early 1990s, numerous microcosm studies demonstrated aerobic ox- idation of vinyl chloride under MNA conditions without the addition of exogenous primary substrates. Since then, strains of 12 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com Mycobacterium,Nocardioides,Pseudomonas,Ochrobactrum, and Ralstonia species have been isolated which are capable of aerobic growth on both ethene and vinyl chloride (see Mattes et al. [49] for a review). The initial steps in the pathway are the monooxygenase (etnABCD) catalyzed conversion of ethene and vinyl chloride to their respective epoxyalkanes (epoxyethane and chlorooxirane), followed by epoxyalkane:CoM transferase (etnE) mediated conjugation and breaking of the epoxide [50]. Aerobic - Chlorinated Benzenes:In general, chlorobenzenes with four or less chlorine groups are susceptible to aerobic biodegra- dation and can serve as growth-supporting substrates. Toluene dioxygenase (TOD) has a relatively relaxed substrate speciﬁcity and mediates the incorporation of both atoms of oxygen into the aromatic ring of benzene and substituted benzenes (toluene and chlorobenzene). Comparison of TOD levels in background and source zone samples from a CB-impacted site suggested that CBs promoted growth of TOD-containing bacteria [51]. In addition, aerobic biodegradation of some trichlorobenzene and even tetrachlorobenzene isomers is initiated by a group of related trichlorobenzene dioxygenase genes (TCBO). Finally, phenol hydrox- ylases catalyze the continued oxidation and in some cases, the initial oxidation of a variety of monoaromatic compounds. In an independent study, signiﬁcant increases in numbers of bacteria containing PHE genes corresponded to increases in biodegradation of DCB isomers [51]. Aerobic - Chlorinated Methanes:Many aerobic methylotrophic bacteria, belonging to diverse genera (Hyphomicrobium,Methylobac- terium,Methylophilus,Pseudomonas,Paracoccus, and Alibacter) have been isolated which are capable of utilizing dichloromethane (DCM) as a growth substrate. The DCM metabolic pathway in methylotrophic bacteria is initiated by a dichloromethane dehalo- genase (DCMA) gene. DCMA is responsible for aerobic biodegradation of dichloromethane by methylotrophs by ﬁrst producing formaldehyde which is then further oxidized [52]. As discussed in previous sections, soluble methane monooxygenase (sMMO) exhibits relaxed speciﬁcity and co-oxidizes a broad spectrum of chlorinated hydrocarbons. In addition to chlorinated ethenes, sMMO has been shown to co-oxidize chloroform in laboratory studies [38, 41]. 13 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com References 1. 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Degradation of trichloroethylene by toluene dioxygenase in whole-cell studies with Pseudomonas putida F1.Applied and Environmental Microbiology 54,1703–1708 (1988). 47. Leahy, J. G., Byrne, A. M. & Olsen, R. H. Comparison of factors inﬂuencing trichloroethylene degradation by toluene-oxidizing bacteria.Applied and Environmental Microbiology 62,825–833 (1996). 48. Wiedemeier, T. H., Wilson, J. T., Freedman, D. L. & Lee, B.Providing Additional Support for MNA by Including Quan- titative Lines of Evidence for Abiotic Degradation and Co-metabolic Oxidation of Chlorinated Ethylenes tech. rep. (TH Wiedemeier and Associates, Inc. Sedalia United States, 2017). 49. Mattes, T. E., Alexander, A. K. & Coleman, N. V. Aerobic biodegradation of the chloroethenes: pathways, enzymes, ecology, and evolution.FEMS Microbiology Reviews 34,445–475 (2010). 50. Coleman, N. V. & Spain, J. C. Epoxyalkane: coenzyme M transferase in the ethene and vinyl chloride biodegrada- tion pathways of Mycobacterium strain JS60.Journal of Bacteriology 185,5536–5545 (2003). 51. Dominguez, R. F.et al.Aerobic bioremediation of chlorobenzene source-zone soil in ﬂow-through columns: perfor- mance assessment using quantitative PCR.Biodegradation 19,545–553 (2008). 52. La Roche, S. D. & Leisinger, T. Sequence analysis and expression of the bacterial dichloromethane dehalogenase structural gene, a member of the glutathione S-transferase supergene family.Journal of Bacteriology 172,164–171 (1990). 16 10515 Research Drive Knoxville, TN 37932 Phone: 865.573.8188 Fax: 865.573.8133 Web: www.microbe.com APPENDIX E MANN-KENDALL TREND ANALYSIS Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-12I MW-13I MW-14I MW-15I MW-18I MW-19I Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 18.40 3 23-Oct-19 49.50 1.00 1.00 4 24-Oct-19 8.69 18.10 5 25-Oct-19 6 7-Jan-20 8.05 42.90 7 8-Jan-20 15.60 50.40 18.00 8 9-Jan-20 9.20 9 10-Jan-20 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 16.80 13 22-Apr-20 37.20 14 23-Apr-20 19.60 12.70 15 24-Apr-20 12.50 65.20 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 13.60 36.50 15.50 19 16-Jul-20 9.76 20 17-Jul-20 13.50 40.80 21 26-Jul-21 22 27-Jul-21 13.50 43.00 23 28-Jul-21 9.46 25.80 12.10 24 29-Jul-21 25 30-Jul-21 26 12-Aug-21 31.20 27 2-Nov-21 11.70 28 3-Nov-21 36.20 1.81 29 4-Nov-21 9.12 10.90 32.50 30 14-Feb-22 31 15-Feb-22 8.12 32 16-Feb-22 1.81 11.20 33 17-Feb-22 32.40 1.81 28.80 34 9-May-22 35 10-May-22 3.53 36 11-May-22 9.84 33.80 10.60 32.60 37 12-May-22 38 39 40 Coefficient of Variation:0.38 0.25 0.17 0.72 0.42 0.52Mann-Kendall Statistic (S):-5 -22 -20 -15 2 -4Confidence Factor:71.9%99.8%99.3%95.8%54.8%64.0% Concentration Trend:Stable Decreasing Decreasing Decreasing No Trend Stable Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com 1,1-DICHLOROETHANE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility 1,1-Dichloroethane 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-12I MW-13I MW-14I MW-15I MW-18I MW-19I Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-9I MW-10I MW-12I MW-13I MW-14I MW-15I MW-18I Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 17.3 3 23-Oct-19 20.4 3.9 4 24-Oct-19 27.9 10.3 8.70 7.62 5 25-Oct-19 6 7-Jan-20 1.83 7 8-Jan-20 6.86 18.30 17.90 8 9-Jan-20 12.20 9 10-Jan-20 25.30 15.40 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 19.9 13 22-Apr-20 22.7 14 23-Apr-20 25.4 11.9 4.69 15 24-Apr-20 15 18 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 9.34 20.2 19.80 19 16-Jul-20 27.6 14.1 20 17-Jul-20 23.4 4.93 21 26-Jul-21 22 27-Jul-21 9.21 21.3 23 28-Jul-21 13.4 26.8 24 29-Jul-21 3.93 25 30-Jul-21 30.5 14.3 26 12-Aug-21 27 2-Nov-21 28 3-Nov-21 31.6 16.7 18.5 2.85 29 4-Nov-21 12.20 7.03 2.85 30 14-Feb-22 31 15-Feb-22 26.40 32 16-Feb-22 12.80 8.8 33 17-Feb-22 10.1 23 2.85 2.85 34 9-May-22 35 10-May-22 0.241 36 11-May-22 24.1 7.1 19.1 4.56 37 12-May-22 14.2 38 39 40 Coefficient of Variation:0.10 0.28 0.21 0.20 0.09 0.74 0.29Mann-Kendall Statistic (S):0 -4 2 -4 2 -9 1Confidence Factor:45.2%64.0%55.7%64.0%54.8%83.2%50.0% Concentration Trend:Stable Stable No Trend Stable No Trend Stable No Trend Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com 1,1-DICHLOROETHENE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility 1,1-Dichloroethene 0.1 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-9I MW-10I MW-12I MW-13I MW-14I MW-15I MW-18I Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-19I Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 3 23-Oct-19 32.6 4 24-Oct-19 5 25-Oct-19 6 7-Jan-20 20.8 7 8-Jan-20 8 9-Jan-20 9 10-Jan-20 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 13 22-Apr-20 14 23-Apr-20 15 24-Apr-20 37.4 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 19 16-Jul-20 20 17-Jul-20 31.7 21 26-Jul-21 22 27-Jul-21 23 28-Jul-21 24 29-Jul-21 25 30-Jul-21 26 12-Aug-21 27.1 27 2-Nov-21 28 3-Nov-21 29 4-Nov-21 26.8 30 14-Feb-22 31 15-Feb-22 32 16-Feb-22 33 17-Feb-22 29.6 34 9-May-22 35 10-May-22 36 11-May-22 27.7 37 12-May-22 38 39 40 Coefficient of Variation:0.17Mann-Kendall Statistic (S):-6Confidence Factor:72.6% Concentration Trend:Stable Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com 1,1-DICHLOROETHENE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility 1,1-Dichloroethene 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-19I MW-19I Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-9I MW-12I MW-13I MW-14I MW-19I Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 3 23-Oct-19 7.86 10.3 4 24-Oct-19 37.50 66.80 7.36 5 25-Oct-19 6 7-Jan-20 9.41 7 8-Jan-20 5.89 7.63 8 9-Jan-20 55.20 9 10-Jan-20 29.90 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 13 22-Apr-20 6.82 14 23-Apr-20 27.70 7.4 15 24-Apr-20 80 13.1 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 5.65 6.42 19 16-Jul-20 34.60 68.5 20 17-Jul-20 21 26-Jul-21 22 27-Jul-21 5.09 8.04 23 28-Jul-21 59.7 24 29-Jul-21 25 30-Jul-21 32.50 26 12-Aug-21 7.78 27 2-Nov-21 28 3-Nov-21 36.50 7.48 29 4-Nov-21 62.40 1.45 9.31 30 14-Feb-22 31 15-Feb-22 31.10 32 16-Feb-22 58.70 1.45 33 17-Feb-22 5.17 6.73 34 9-May-22 35 10-May-22 36 11-May-22 26.00 4.52 5.48 7.42 37 12-May-22 38 39 40 Coefficient of Variation:0.13 0.13 0.48 0.16 0.24Mann-Kendall Statistic (S):-8 -5 -19 -14 -13Confidence Factor:80.1%71.9%98.9%94.6%96.5% Concentration Trend:Stable Stable Decreasing Prob. Decreasing Decreasing Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com 1,2-DICHLOROETHANE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility 1,2-Dichloroethane 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-9I MW-12I MW-13I MW-14I MW-19I Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-4I MW-9I MW-10I MW-12I MW-13I MW-14I MW-15I Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 11.3 3 23-Oct-19 20.7 29 4 24-Oct-19 8.14 5.98 7.72 6.99 5 25-Oct-19 6 7-Jan-20 7 8-Jan-20 5.27 26.4 11.30 8 9-Jan-20 21.30 6.62 9 10-Jan-20 7.10 5.54 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 13.9 13 22-Apr-20 19.8 21.7 14 23-Apr-20 6.82 5.73 15 24-Apr-20 5.04 6.18 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 21.5 7.15 26.2 11.8 19 16-Jul-20 7.57 7.68 20 17-Jul-20 5.55 21 26-Jul-21 22 27-Jul-21 5.26 26.3 23 28-Jul-21 20.4 7.07 16.4 24 29-Jul-21 25 30-Jul-21 7.82 5.8 26 12-Aug-21 27 2-Nov-21 28 3-Nov-21 6.58 4.15 16.3 0.3 29 4-Nov-21 15.4 4.41 3.8 30 14-Feb-22 31 15-Feb-22 7.4 32 16-Feb-22 19.9 6.30 6.87 33 17-Feb-22 5.69 21.5 2.34 34 9-May-22 35 10-May-22 3.67 36 11-May-22 17.3 5.84 3.95 16.5 37 12-May-22 3.60 38 39 40 Coefficient of Variation:0.11 0.10 0.17 0.17 0.23 0.21 0.67Mann-Kendall Statistic (S):-12 -12 -10 -9 -10 -18 -5Confidence Factor:91.1%91.1%86.2%88.1%86.2%98.4%68.3% Concentration Trend:Prob. Decreasing Prob. Decreasing Stable Stable Stable Decreasing Stable Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com 1,4-DIOXANE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility 1,4-Dioxane 0.1 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-4I MW-9I MW-10I MW-12I MW-13I MW-14I MW-15I Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-17I MW-18I MW-19I Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 3 23-Oct-19 2.90 9.58 53.40 4 24-Oct-19 5 25-Oct-19 6 7-Jan-20 1.40 7.18 49.00 7 8-Jan-20 8 9-Jan-20 9 10-Jan-20 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 13 22-Apr-20 1.40 14 23-Apr-20 7.89 15 24-Apr-20 51.50 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 19 16-Jul-20 1.40 20 17-Jul-20 9.07 44.10 21 26-Jul-21 22 27-Jul-21 23 28-Jul-21 24 29-Jul-21 1.40 8.09 25 30-Jul-21 26 12-Aug-21 35.80 27 2-Nov-21 1.28 28 3-Nov-21 29 4-Nov-21 6.26 27.4 30 14-Feb-22 1.58 31 15-Feb-22 32 16-Feb-22 33 17-Feb-22 6.68 43.80 34 9-May-22 0.634 35 10-May-22 36 11-May-22 6.12 31.0 37 12-May-22 38 39 40 Coefficient of Variation:0.42 0.17 0.23Mann-Kendall Statistic (S):-12 -16 -20Confidence Factor:91.1%96.9%99.3% Concentration Trend:Prob. Decreasing Decreasing Decreasing Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com 1,4-DIOXANE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility 1,4-Dioxane 0.1 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-17I MW-18I MW-19I Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-9I MW-10I MW-12I MW-13I MW-14I MW-15I MW-18I Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 476 3 23-Oct-19 465 5.93 4 24-Oct-19 1560 931 285.00 157.00 5 25-Oct-19 6 7-Jan-20 4.34 7 8-Jan-20 129.00 261.00 373.00 8 9-Jan-20 275.00 9 10-Jan-20 1290.00 712 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 367 13 22-Apr-20 394 14 23-Apr-20 1220 194 6.22 15 24-Apr-20 667 365 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 177 355 344.00 19 16-Jul-20 1420 324 20 17-Jul-20 1100 7.22 21 26-Jul-21 22 27-Jul-21 174 318 23 28-Jul-21 245 367 24 29-Jul-21 5.02 25 30-Jul-21 1380 699 26 12-Aug-21 27 2-Nov-21 28 3-Nov-21 1690 871 408 7.51 29 4-Nov-21 383.00 159 7.07 30 14-Feb-22 31 15-Feb-22 1600.00 32 16-Feb-22 339.00 164 33 17-Feb-22 609 447 36.3 1.57 34 9-May-22 35 10-May-22 17.5 36 11-May-22 1360 161 449 6.94 37 12-May-22 752 38 39 40 Coefficient of Variation:0.11 0.21 0.16 0.11 0.18 0.78 0.34Mann-Kendall Statistic (S):4 -6 5 0 8 -21 2Confidence Factor:64.0%72.6%71.9%45.2%80.1%99.6%54.8% Concentration Trend:No Trend Stable No Trend Stable No Trend Decreasing No Trend Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com CIS-1,2-DICHLOROETHENE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility cis-1,2-Dichloroethene 1 10 100 1000 10000 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-9I MW-10I MW-12I MW-13I MW-14I MW-15I MW-18I Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-19I Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 3 23-Oct-19 152 4 24-Oct-19 5 25-Oct-19 6 7-Jan-20 136 7 8-Jan-20 8 9-Jan-20 9 10-Jan-20 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 13 22-Apr-20 14 23-Apr-20 15 24-Apr-20 187 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 19 16-Jul-20 20 17-Jul-20 160 21 26-Jul-21 22 27-Jul-21 23 28-Jul-21 24 29-Jul-21 25 30-Jul-21 26 12-Aug-21 135 27 2-Nov-21 28 3-Nov-21 29 4-Nov-21 144 30 14-Feb-22 31 15-Feb-22 32 16-Feb-22 33 17-Feb-22 123 34 9-May-22 35 10-May-22 36 11-May-22 157 37 12-May-22 38 39 40 Coefficient of Variation:0.13Mann-Kendall Statistic (S):-6Confidence Factor:72.6% Concentration Trend:Stable Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com CIS-1,2-DICHLOROETHENE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility cis-1,2-Dichloroethene 1 10 100 1000 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-19I MW-19I Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-9I MW-13I MW-14I MW-15I MW-19I Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 9.76 3 23-Oct-19 5.00 5.98 4 24-Oct-19 11.5 80.7 5 25-Oct-19 6 7-Jan-20 5.95 7 8-Jan-20 55.40 2.76 8.36 8 9-Jan-20 9 10-Jan-20 20.0 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 4.00 13 22-Apr-20 30.20 14 23-Apr-20 20.00 69.00 15 24-Apr-20 9.51 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 41.20 11.60 14.3 19 16-Jul-20 18.5 20 17-Jul-20 21.5 21 26-Jul-21 22 27-Jul-21 62.4 40 23 28-Jul-21 21.6 24 29-Jul-21 25 30-Jul-21 13.9 26 12-Aug-21 17.3 27 2-Nov-21 28 3-Nov-21 9.31 41.3 2.00 29 4-Nov-21 27.2 19.5 30 14-Feb-22 31 15-Feb-22 8.41 32 16-Feb-22 19 33 17-Feb-22 18.9 2.00 12.7 34 9-May-22 35 10-May-22 0.194 36 11-May-22 1.94 18.4 14.1 13.7 37 12-May-22 38 39 40 Coefficient of Variation:0.50 0.51 0.73 0.94 0.45Mann-Kendall Statistic (S):-19 -22 10 -13 10Confidence Factor:98.9%99.8%86.2%92.9%86.2% Concentration Trend:Decreasing Decreasing No Trend Prob. Decreasing No Trend Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com TETRACHLOROETHENE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility Tetrachloroethene 0.1 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-9I MW-13I MW-14I MW-15I MW-19I Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-9I MW-10I MW-12I MW-13I MW-15I MW-19I Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 6.79 3 23-Oct-19 3.41 4 24-Oct-19 29.3 28.5 5.30 8.68 5 25-Oct-19 6 7-Jan-20 2.81 7 8-Jan-20 5.90 2.11 8 9-Jan-20 5.00 9 10-Jan-20 20.00 24.40 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 4.00 13 22-Apr-20 14 23-Apr-20 20.00 8.94 15 24-Apr-20 22.6 6.23 4.08 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 9.76 4.86 19 16-Jul-20 28.9 6.23 20 17-Jul-20 40.4 6.35 21 26-Jul-21 22 27-Jul-21 10.1 23 28-Jul-21 5.79 6.93 24 29-Jul-21 25 30-Jul-21 28.5 33.9 26 12-Aug-21 4.76 27 2-Nov-21 28 3-Nov-21 33.2 30.3 2.54 29 4-Nov-21 6.51 8.59 5.36 30 14-Feb-22 31 15-Feb-22 23.40 32 16-Feb-22 5.13 8.77 33 17-Feb-22 21.1 2.54 2.54 34 9-May-22 35 10-May-22 1.09 36 11-May-22 24.2 16.4 4.47 37 12-May-22 28.2 38 39 40 Coefficient of Variation:0.18 0.22 0.11 0.31 0.56 0.31Mann-Kendall Statistic (S):1 -4 4 12 -9 4Confidence Factor:50.0%64.0%66.7%91.1%83.2%64.0% Concentration Trend:No Trend Stable No Trend Prob. Increasing Stable No Trend Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com TRANS-1,2-DICHLOROETHENE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility trans-1,2-Dichloroethene 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-9I MW-10I MW-12I MW-13I MW-15I MW-19I Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-9I MW-10I MW-12I MW-13I MW-14I MW-15I MW-19I Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 89.7 3 23-Oct-19 5.00 83.7 4 24-Oct-19 211 49.6 30.60 160.00 5 25-Oct-19 6 7-Jan-20 73.50 7 8-Jan-20 125.00 85.00 90.30 8 9-Jan-20 40.70 9 10-Jan-20 152.00 41.4 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 35.9 13 22-Apr-20 162 14 23-Apr-20 144 171 15 24-Apr-20 36 54.1 95.3 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 102 107 78.90 19 16-Jul-20 233 41 20 17-Jul-20 67.5 107 21 26-Jul-21 22 27-Jul-21 116 144 23 28-Jul-21 36.5 192 24 29-Jul-21 25 30-Jul-21 212 40.7 26 12-Aug-21 82.2 27 2-Nov-21 28 3-Nov-21 212 65.8 188 1.50 29 4-Nov-21 36.60 100 83.8 30 14-Feb-22 31 15-Feb-22 150.00 32 16-Feb-22 31.00 53.8 33 17-Feb-22 33 51.7 1.50 15.0 34 9-May-22 35 10-May-22 1.08 36 11-May-22 130 53.9 76.6 69 37 12-May-22 51.7 38 39 40 Coefficient of Variation:0.22 0.27 0.21 0.39 0.59 1.08 0.36Mann-Kendall Statistic (S):-7 -2 -3 -20 4 -15 -8Confidence Factor:76.4%54.8%61.4%99.3%64.0%95.8%80.1% Concentration Trend:Stable Stable Stable Decreasing No Trend Decreasing Stable Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com TRICHLOROETHENE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility Trichloroethene 1 10 100 1000 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-9I MW-10I MW-12I MW-13I MW-14I MW-15I MW-19I Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-9I MW-12I MW-14I MW-15I MW-18I MW-19I Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 50.5 3 23-Oct-19 38.50 1.21 4.36 4 24-Oct-19 16.7 21.9 5 25-Oct-19 6 7-Jan-20 1.00 2.63 7 8-Jan-20 2.71 2.40 8 9-Jan-20 8.41 9 10-Jan-20 20.0 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 20.1 13 22-Apr-20 6.96 14 23-Apr-20 20.0 2.16 15 24-Apr-20 5.08 5.38 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 18.3 29.6 19 16-Jul-20 23.6 19.50 20 17-Jul-20 5.56 29.7 21 26-Jul-21 22 27-Jul-21 17.6 23 28-Jul-21 13.80 15.50 24 29-Jul-21 5.47 25 30-Jul-21 17.5 26 12-Aug-21 18.5 27 2-Nov-21 28 3-Nov-21 25.000 13.4 3.67 29 4-Nov-21 3.67 3.67 15.9 30 14-Feb-22 31 15-Feb-22 8.08 32 16-Feb-22 6.81 33 17-Feb-22 6.49 12.6 3.67 11.8 34 9-May-22 35 10-May-22 27.7 36 11-May-22 2.80 8.33 3.48 12.3 37 12-May-22 38 39 40 Coefficient of Variation:0.46 0.64 0.81 0.78 0.53 0.71Mann-Kendall Statistic (S):-5 -9 -6 -4 7 8Confidence Factor:68.3%88.1%72.6%64.0%76.4%80.1% Concentration Trend:Stable Stable Stable Stable No Trend No Trend Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com VINYL CHLORIDE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility Vinyl Chloride 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-9I MW-12I MW-14I MW-15I MW-18I MW-19I Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:B-1 MW-8 MW-12 MW-13 MW-16 Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 1.85 3 23-Oct-19 4 24-Oct-19 89.80 1.50 4.80 2.99 5 25-Oct-19 6 7-Jan-20 2.42 7 8-Jan-20 7.52 8 9-Jan-20 160.00 1.41 2.64 9 10-Jan-20 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 2.42 13 22-Apr-20 323.00 14 23-Apr-20 10.70 3.37 15 24-Apr-20 1.89 16 13-Jul-20 17 14-Jul-20 2.80 18 15-Jul-20 127.00 6.13 19 16-Jul-20 2.51 3.66 20 17-Jul-20 21 26-Jul-21 22 27-Jul-21 1.00 3.52 23 28-Jul-21 2.80 2.42 24 29-Jul-21 25 30-Jul-21 26 12-Aug-21 40.10 27 2-Nov-21 1.81 28 3-Nov-21 29 4-Nov-21 34.20 1.81 1.81 1.81 30 14-Feb-22 31 15-Feb-22 1.81 32 16-Feb-22 14.60 1.81 1.81 1.81 33 17-Feb-22 34 9-May-22 35 10-May-22 3.57 14.70 36 11-May-22 1.88 2.76 2.46 37 12-May-22 38 39 40 Coefficient of Variation:0.35 1.04 0.24 0.64 0.25Mann-Kendall Statistic (S):2 -18 7 -15 -11Confidence Factor:54.8%98.4%76.4%95.8%88.7% Concentration Trend:No Trend Decreasing No Trend Decreasing Stable Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com 1,1-DICHLOROETHANE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility 1,1-Dichloroethane 1 10 100 1000 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date B-1 MW-8 MW-12 MW-13 MW-16 Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-8 MW-10 MW-13 Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 3 23-Oct-19 4 24-Oct-19 20.10 4 2.31 5 25-Oct-19 6 7-Jan-20 7 8-Jan-20 3.92 8 9-Jan-20 34.40 9 10-Jan-20 2.85 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 13 22-Apr-20 83.00 14 23-Apr-20 6.42 15 24-Apr-20 4.36 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 30.50 3.56 19 16-Jul-20 20 17-Jul-20 4.56 21 26-Jul-21 22 27-Jul-21 1.58 23 28-Jul-21 24 29-Jul-21 25 30-Jul-21 26 12-Aug-21 13.00 6.18 27 2-Nov-21 28 3-Nov-21 5.08 29 4-Nov-21 9.66 2.85 30 14-Feb-22 31 15-Feb-22 32 16-Feb-22 2.85 2.85 33 17-Feb-22 2.85 34 9-May-22 35 10-May-22 3.97 36 11-May-22 1.21 37 12-May-22 3.92 38 39 40 Coefficient of Variation:1.06 0.26 0.53Mann-Kendall Statistic (S):-18 3 -11Confidence Factor:98.4%59.4%88.7% Concentration Trend:Decreasing No Trend Stable Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com 1,1-DICHLOROETHENE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility 1,1-Dichloroethene 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-8 MW-10 MW-13 Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-8 Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 3 23-Oct-19 4 24-Oct-19 13.00 5 25-Oct-19 6 7-Jan-20 7 8-Jan-20 8 9-Jan-20 19.00 9 10-Jan-20 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 13 22-Apr-20 38.80 14 23-Apr-20 15 24-Apr-20 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 16.60 19 16-Jul-20 20 17-Jul-20 21 26-Jul-21 22 27-Jul-21 23 28-Jul-21 24 29-Jul-21 25 30-Jul-21 26 12-Aug-21 6.39 27 2-Nov-21 28 3-Nov-21 29 4-Nov-21 5.26 30 14-Feb-22 31 15-Feb-22 32 16-Feb-22 1.45 33 17-Feb-22 34 9-May-22 35 10-May-22 2.00 36 11-May-22 37 12-May-22 38 39 40 Coefficient of Variation:0.97Mann-Kendall Statistic (S):-18Confidence Factor:98.4% Concentration Trend:Decreasing Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com 1,2-DICHLOROETHANE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility 1,2-Dichloroethane 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-8 MW-8 Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:B-1 MW-8 MW-10 MW-13 MW-16 Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 5.70 3 23-Oct-19 4 24-Oct-19 11.00 2.11 3.66 2.17 5 25-Oct-19 6 7-Jan-20 6.78 7 8-Jan-20 4.40 8 9-Jan-20 16.10 1.88 9 10-Jan-20 1.62 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 5.97 13 22-Apr-20 24.4 14 23-Apr-20 4.31 2.48 15 24-Apr-20 1.42 16 13-Jul-20 17 14-Jul-20 6.21 18 15-Jul-20 12.3 3.78 19 16-Jul-20 2.9 20 17-Jul-20 1.81 21 26-Jul-21 22 27-Jul-21 2.81 1.78 23 28-Jul-21 2.54 24 29-Jul-21 25 30-Jul-21 26 12-Aug-21 21.00 2.11 27 2-Nov-21 4.75 28 3-Nov-21 1.36 29 4-Nov-21 6.28 0.3 2.23 30 14-Feb-22 31 15-Feb-22 7.96 32 16-Feb-22 3.95 1.43 2.77 33 17-Feb-22 1.92 34 9-May-22 35 10-May-22 7.00 1.58 36 11-May-22 0.597 1.39 37 12-May-22 0.861 38 39 40 Coefficient of Variation:0.27 0.67 0.26 0.67 0.21Mann-Kendall Statistic (S):6 -14 -9 -18 2Confidence Factor:72.6%94.6%83.2%98.4%54.8% Concentration Trend:No Trend Prob. Decreasing Stable Decreasing No Trend Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com 1,4-DIOXANE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility 1,4-Dioxane 0.1 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date B-1 MW-8 MW-10 MW-13 MW-16 Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:B-1 MW-4 MW-6 MW-8 MW-9 MW-10 MW-12 Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 4.47 3 23-Oct-19 4.42 1.00 4 24-Oct-19 815.00 139 391.00 23.60 5 25-Oct-19 6 7-Jan-20 5.57 7 8-Jan-20 8 9-Jan-20 3.06 1.00 788.00 22.20 9 10-Jan-20 69.4 347.00 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 5.14 13 22-Apr-20 3.15 1.00 1840 14 23-Apr-20 160 15 24-Apr-20 309 26.7 16 13-Jul-20 17 14-Jul-20 5.48 18 15-Jul-20 3.68 703 19 16-Jul-20 1.00 91.8 40.10 20 17-Jul-20 345 21 26-Jul-21 22 27-Jul-21 1.87 23 28-Jul-21 53.30 56.2 24 29-Jul-21 30.00 25 30-Jul-21 317 26 12-Aug-21 267.00 434 27 2-Nov-21 1.57 28 3-Nov-21 251 406 29 4-Nov-21 14.8 16.70 245 46.7 30 14-Feb-22 31 15-Feb-22 6.12 112 32 16-Feb-22 21.00 11.70 88 37.30 33 17-Feb-22 317 34 9-May-22 35 10-May-22 8.37 60.2 36 11-May-22 18.8 10.40 95.4 37 12-May-22 284 32.6 38 39 40 Coefficient of Variation:0.46 1.12 1.15 0.98 0.56 0.15 0.33Mann-Kendall Statistic (S):6 14 10 -24 2 -8 10Confidence Factor:72.6%94.6%86.2%99.9%54.8%80.1%86.2% Concentration Trend:No Trend Prob. Increasing No Trend Decreasing No Trend Stable No Trend Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com CIS-1,2-DICHLOROETHENE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility cis-1,2-Dichloroethene 1 10 100 1000 10000 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date B-1 MW-4 MW-6 MW-8 MW-9 MW-10 MW-12 Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-13 MW-15 MW-16 Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 3.94 3 23-Oct-19 4 24-Oct-19 130 48.30 5 25-Oct-19 6 7-Jan-20 7 8-Jan-20 232.00 7.45 8 9-Jan-20 44.50 9 10-Jan-20 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 7.68 13 22-Apr-20 14 23-Apr-20 306 55.7 15 24-Apr-20 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 177 3.41 19 16-Jul-20 69.20 20 17-Jul-20 21 26-Jul-21 22 27-Jul-21 104.00 23 28-Jul-21 15.40 57.90 24 29-Jul-21 25 30-Jul-21 26 12-Aug-21 27 2-Nov-21 28 3-Nov-21 6.16 29 4-Nov-21 12.5 56.50 30 14-Feb-22 31 15-Feb-22 32 16-Feb-22 93.9 60.90 33 17-Feb-22 8.43 34 9-May-22 35 10-May-22 3.14 36 11-May-22 84.5 57.80 37 12-May-22 38 39 40 Coefficient of Variation:0.65 0.57 0.13Mann-Kendall Statistic (S):-16 0 12Confidence Factor:96.9%45.2%91.1% Concentration Trend:Decreasing Stable Prob. Increasing Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com CIS-1,2-DICHLOROETHENE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility cis-1,2-Dichloroethene 1 10 100 1000 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-13 MW-15 MW-16 Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-9 MW-10 MW-12 MW-16 Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 3 23-Oct-19 4 24-Oct-19 2.99 13.9 1.00 2.72 5 25-Oct-19 6 7-Jan-20 7 8-Jan-20 8 9-Jan-20 1.00 2.39 9 10-Jan-20 1.33 13.90 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 13 22-Apr-20 14 23-Apr-20 4.75 3.35 15 24-Apr-20 13.6 1.1 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 19 16-Jul-20 2.32 1.62 3.91 20 17-Jul-20 14.1 21 26-Jul-21 22 27-Jul-21 23 28-Jul-21 2.41 2.85 24 29-Jul-21 25 30-Jul-21 6.68 26 12-Aug-21 13.8 27 2-Nov-21 28 3-Nov-21 2.54 12.2 29 4-Nov-21 2.54 2.54 30 14-Feb-22 31 15-Feb-22 2.54 32 16-Feb-22 2.54 2.54 33 17-Feb-22 10.3 34 9-May-22 35 10-May-22 36 11-May-22 2.82 2.89 37 12-May-22 9.76 2 38 39 40 Coefficient of Variation:0.52 0.14 0.39 0.17Mann-Kendall Statistic (S):3 -19 20 1Confidence Factor:59.4%98.9%99.3%50.0% Concentration Trend:No Trend Decreasing Increasing No Trend Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com TRANS-1,2-DICHLOROETHENE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility trans-1,2-Dichloroethene 1 10 100 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-9 MW-10 MW-12 Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-8 Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 3 23-Oct-19 4 24-Oct-19 31.6 5 25-Oct-19 6 7-Jan-20 7 8-Jan-20 8 9-Jan-20 41.70 9 10-Jan-20 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 13 22-Apr-20 89.50 14 23-Apr-20 15 24-Apr-20 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 38.10 19 16-Jul-20 20 17-Jul-20 21 26-Jul-21 22 27-Jul-21 23 28-Jul-21 24 29-Jul-21 25 30-Jul-21 26 12-Aug-21 162 27 2-Nov-21 28 3-Nov-21 29 4-Nov-21 73.3 30 14-Feb-22 31 15-Feb-22 32 16-Feb-22 12.90 33 17-Feb-22 34 9-May-22 35 10-May-22 7.96 36 11-May-22 37 12-May-22 38 39 40 Coefficient of Variation:0.89Mann-Kendall Statistic (S):-6Confidence Factor:72.6% Concentration Trend:Stable Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com TRICHLOROETHENE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility Trichloroethene 1 10 100 1000 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW -8 MW-8 Evaluation Date:Job ID: Facility Name:Constituent: Conducted By:Concentration Units:ug/L Sampling Point ID:MW-8 MW-9 MW-12 MW-16 Sampling SamplingEventDate 1 21-Oct-19 2 22-Oct-19 3 23-Oct-19 4 24-Oct-19 127 9.26 1 6.71 5 25-Oct-19 6 7-Jan-20 7 8-Jan-20 8 9-Jan-20 39.10 1.54 3.45 9 10-Jan-20 1.99 10 11-Jan-20 11 20-Apr-20 12 21-Apr-20 13 22-Apr-20 62.10 14 23-Apr-20 8.61 3.88 15 24-Apr-20 4.26 16 13-Jul-20 17 14-Jul-20 18 15-Jul-20 40.80 19 16-Jul-20 5.39 7.63 4.79 20 17-Jul-20 21 26-Jul-21 22 27-Jul-21 23 28-Jul-21 2.94 10.7 24 29-Jul-21 25 30-Jul-21 21 26 12-Aug-21 31.4 27 2-Nov-21 28 3-Nov-21 3.67 29 4-Nov-21 13.9 3.67 3.67 30 14-Feb-22 31 15-Feb-22 3.67 32 16-Feb-22 3.67 3.67 3.67 33 17-Feb-22 34 9-May-22 35 10-May-22 4.44 36 11-May-22 1.88 2.99 37 12-May-22 5.03 38 39 40 Coefficient of Variation:1.00 0.91 0.56 0.52Mann-Kendall Statistic (S):-22 -11 13 -9Confidence Factor:99.8%88.7%92.9%83.2% Concentration Trend:Decreasing Stable Prob. Increasing Stable Notes: 1.At least four independent sampling events per well are required for calculating the trend. Methodology is valid for 4 to 40 samples. 2.Confidence in Trend = Confidence (in percent) that constituent concentration is increasing (S>0) or decreasing (S<0): >95% = Increasing or Decreasing; ≥ 90% = Probably Increasing or Probably Decreasing; < 90% and S>0 = No Trend; < 90%, S≤0, and COV ≥ 1 = No Trend; < 90% and COV < 1 = Stable. 3.Methodology based on "MAROS: A Decision Support System for Optimizing Monitoring Plans", J.J. Aziz, M. Ling, H.S. Rifai, C.J. Newell, and J.R. Gonzales, Ground Water , 41(3):355-367, 2003. 4 For events where the constituent was not detected at a concentration exceeding the laboratory reporting limit (RL) or method detection limit (MDL), a value of 1/2 MDL is used for trend analysis and is shaded grey in the table above. DISCLAIMER: The GSI Mann-Kendall Toolkit is available "as is". Considerable care has been exercised in preparing this software product; however, no party, including without limitation GSI Environmental Inc., makes any representation or warranty regarding the accuracy, correctness, or completeness of the information contained herein, and no such party shall be liable for any direct, indirect, consequential, incidental or other damages resulting from the use of this product or the information contained herein. Information in this publication is subject to change without notice. GSI Environmental Inc., disclaims any responsibility or obligation to update the information contained herein. GSI MANN-KENDALL TOOLKIT for Constituent Trend Analysis ERM 600676 GSI Environmental Inc., www.gsi-net.com VINYL CHLORIDE CONCENTRATION (ug/L) 8/22/22 EDO Western Facility Vinyl Chloride 1 10 100 1000 05/19 12/19 06/20 01/21 07/21 02/22 08/22 Co n c e n t r a t i o n ( u g / L ) Sampling Date MW-8 MW-9 MW-12 MW-16 APPENDIX F DATA QUALITY EVALUATION MEMOS ERM 1050 SW 6th Avenue Suite 1650 Portland, OR 97204 Telephone: (503) 488-5282 Fax: (503) 488-5124 www.erm.com Page 1 of 3 © Copyright 2022 by ERM Worldwide Group Limited and/or its affiliates (‘ERM’). All Rights Reserved. No part of this work may be reproduced or transmitted in any form or by any means, without prior written permission of ERM. Memorandum To Justin Dauphinais From Jack James Date 17 March 2022 Reference 0600676 Subject Data Review of EDO Western Corp. First Quarter 2022 Groundwater Samples, February 2022: Eurofins TestAmerica Data Packages 180-133728-1, 180-133790-1, 180-133839-1, and 180-133991-1. The data quality was assessed and any necessary qualifiers were applied following the USEPA National Functional Guidelines for Organic Superfund Methods Data Review, November 2020 and the Groundwater Monitoring and Vapor Intrusion Assessment Work Plan, EDO Western Corporation Acoustic Sensors Facility, South Salt Lake City, Utah, August 2019. Field duplicates were assessed following Environmental Data Review Supplement for Region 1 Data Review Elements and Superfund Specific Guidance/Procedures, September 2020. CHAIN-OF-CUSTODY DISCREPANCIES The chain-of-custody (COC) associated with report 180-133790-1 was not filled out completely. Collection dates for samples MW-9I, MW-11, and MW-11 -C were not provided. The laboratory indicated these dates were on the sample labels and were used for recording purposes. Additionally, the required methods were not selected for these samples. The laboratory was instructed on the required methods and proceeded with analysis. No qualifications were necessary. HOLDING TIME AND PRESERVATION EVALUATION The samples were prepared and analyzed within the method-prescribed time period from the date of collection. The sample shipments were received at the laboratory within the method-prescribed temperature preservation requirements of less than 6°C. BLANK EVALUATION The method and trip blank sample results were non-detected for each of the target analytes, with several exceptions. Methylene chloride was detected in all four trip blank samples. However, this common laboratory contaminant was not detected in the associated samples and qualifications were not necessary. The trip blank detections are presented in Table 1. ERM 17 March 2022 Justin Dauphinais Page 2 of 3 CONTINUING CALIBRATION VERIFICATION EVALUATION The case narratives for reports 180-133728-1,180-133790-1, 180-133839-1, and 180-133991, described that continuing calibration verification (CCV) sample percent differences, relative response factors, and/or recoveries were outside the control limits for several analytes. Qualifications were not necessary if the reported CCV outlier was not associated with sample results. All results associated with the CCV outliers were non-detect and were quailed as estimates (UJ). The CCV outliers and qualified data are presented in Table 2. BLANK SPIKE EVALUATION The laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and relative percent differences (RPDs) were within the laboratory’s limits of acceptance, with the exceptions noted in Table 3. No data were qualified if the outlier can be verified by an in-control result or if a high recovery is associated with a non-detect result. Also, no data were qualified based on RPD exceedances if the analytes were not detected in the associated samples. Sample results associated with the low LCS recovery for 1,4-dioxane were qualified as estimates (UJ). The recoveries for 1,2,4-trichlorobenzene were less than 10 percent in the LCS/LCSD samples in analytical batch 180-388935 from report 180-133728-1. 1,2,4-Trichlorobenzene was not detected in the associated samples and the results were qualified as estimates (UJ) and not rejected as they were in agreement with historical results. MATRIX SPIKE EVALUATION The laboratory prepared several non-project samples for matrix spike (MS) and matrix spike duplicate (MSD) analysis. MS samples from non-project parent samples are not representative of the matrix for this project and were therefore not reviewed in this validation effort. The MS/MSD recoveries and RPDs were within laboratory limits of acceptance for samples prepared from project samples, with several exceptions. No data were qualified if the outlier can be verified by an in-control result, or if a high recovery is associated with a non-detect result. Also, no data were qualified based on RPD if the analytes were not detected in the associated samples. The MS/MSD recoveries for acetone prepared from sample B-1 were zero percent. Acetone was not detected in the parent sample or the associated field duplicate, B-1-a. The non-detect results were qualified as estimates (UJ) and not rejected as they were in agreement with historical results. The 1,4-dioxane by 8260D result for sample MW -15I was rejected (R) as the analyte was not detected in either the MS or MSD samples. Impact to the overall project is minimal as 1,4-dioxane was also reported by method 8260D-SIM for this sample with passing laboratory quality control recoveries. The outliers and qualified data can be found in Table 3. ERM 17 March 2022 Justin Dauphinais Page 3 of 3 SURROGATE SPIKE EVALUATION The surrogate recoveries were within acceptable limits. No qualifications were required based on surrogate recoveries. The surrogate recoveries indicate minimal matrix interference in the samples. INTERNAL STANDARD EVALUATION The laboratory identified three samples with internal standard (ISTD) recoveries that did not meet laboratory or method criteria. The laboratory indicated the ISTDs were not associated with any of the reported target analytes and qualifications were not necessary. The ISTD outliers are presented in Table 4. FIELD DUPLICATE EVALUATION Two samples were submitted in duplicate. ERM calculated the differences or RPDs between detected results in Table 5. An RPD control limit of 30 was used for aqueous samples when both the sample and the field duplicate results were greater than or equal to five times the reporting limit. A control limit of ± two times the reporting limit for the calculated differences was used when at least one of the results was less than five times the reporting limit. All calculated RPDs and differences were within the control limits indicating acceptable field precision. OVERALL ASSESSMENT One result was rejected due to associated MS/MSD failures. With exception of the rejected result, all of the data, including qualified data, can be used for decision-making purposes; however, the limitations indicated by the applied qualifiers should be considered when using the data. The quality of the data generated during this investigation is acceptable for the preparation of technically- defensible documents. Table 1 Blank and Associated Suspect Sample Detections February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Blank ID Associated Sample Detected Analyte Reported Blank Concentration Blank Report Limit Associated Sample Result Associated Sample Report Limit Units ERM Qualifier 180-133728-1 MW-11I-C (Trip Blank)None for qualification Methylene chloride 5.42 5.00 ----μg/L -- 180-133790-1 MW-11-C (Trip Blank)None for qualification Methylene chloride 7.27 5.00 ----μg/L -- 180-133839-1 MW-16-c (Trip Blank)None for qualification Methylene chloride 5.36 5.00 ----μg/L -- 180-133991-1 MW-14-C (Trip Blank)None for qualification Methylene chloride 5.51 5.00 ----μg/L -- Lab packages reviewed: 180-133728-1, 180-133790-1, 180-133839-1, and 180-133991-1 Notes: μg/L = Micrograms per liter ERM Page 1 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-11I ND μg/L UJ MW-17I ND μg/L UJ MW-20I ND μg/L UJ MW-5 ND μg/L UJ MW-5I ND μg/L UJ MW-11I ND μg/L UJ MW-17I ND μg/L UJ MW-20I ND μg/L UJ MW-5 ND μg/L UJ MW-5I ND μg/L UJ MW-11I ND μg/L UJ MW-17I ND μg/L UJ MW-20I ND μg/L UJ MW-5 ND μg/L UJ MW-5I ND μg/L UJ MW-11I ND μg/L UJ MW-17I ND μg/L UJ MW-20I ND μg/L UJ MW-5 ND μg/L UJ MW-5I ND μg/L UJ MW-11I ND μg/L UJ MW-17I ND μg/L UJ MW-20I ND μg/L UJ MW-5 ND μg/L UJ MW-5I ND μg/L UJ Out NR Out NR Out NR 180-133728-1 2-Butanone 1,2,4-Trichlorobenzene 1,2,3-Trichlorobenzene 1,4-Dioxane Methylcyclohexane CCV in batch 180-388935 Out NR Out NR ERM Page 2 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-11I ND μg/L UJ MW-17I ND μg/L UJ MW-20I ND μg/L UJ MW-5 ND μg/L UJ MW-5I ND μg/L UJ MW-11I ND μg/L UJ MW-17I ND μg/L UJ MW-20I ND μg/L UJ MW-5 ND μg/L UJ MW-5I ND μg/L UJ MW-11I ND μg/L UJ MW-17I ND μg/L UJ MW-20I ND μg/L UJ MW-5 ND μg/L UJ MW-5I ND μg/L UJ Chloroethane ND μg/L UJ Bromomethane ND μg/L UJ Trichlorofluoromethane ND μg/L UJ B-1 ND μg/L UJ B-1-a ND μg/L UJ B-3 ND μg/L UJ MW-2 ND μg/L UJ MW-2I ND μg/L UJ B-1 ND μg/L UJ B-1-a ND μg/L UJ Out NR Out NR MW-11I-CNRLow 180-133728-1 CCV in batch 400-568080 Isopropylbenzene 1,4-Dioxane RRF not meeting criteria NR CCV in batch 180-388935 1,2-Dibromo-3- Chloropropane Ethylene Dibromide Out NR Out NRtrans-1,3-Dichloropropene CCV in batch 180-389102180-133790-1 ERM Page 3 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier B-3 ND μg/L UJ MW-2 ND μg/L UJ MW-2I ND μg/L UJ B-1 ND μg/L UJ B-1-a ND μg/L UJ B-3 ND μg/L UJ MW-2 ND μg/L UJ MW-2I ND μg/L UJ B-1 ND μg/L UJ B-1-a ND μg/L UJ B-3 ND μg/L UJ MW-2 ND μg/L UJ MW-2I ND μg/L UJ B-1 ND μg/L UJ B-1-a ND μg/L UJ B-3 ND μg/L UJ MW-2 ND μg/L UJ MW-2I ND μg/L UJ B-1 ND μg/L UJ B-1-a ND μg/L UJ B-3 ND μg/L UJ MW-2 ND μg/L UJ MW-2I ND μg/L UJ Out NR Out NR Out NR 1,2-Dichloroethane 2-Butanone NROut 2-Hexanone 1,2-Dibromo-3- Chloropropane Out NR CCV in batch 180-389102 trans-1,3-Dichloropropene 180-133790-1 ERM Page 4 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier B-1 ND μg/L UJ B-1-a ND μg/L UJ B-3 ND μg/L UJ MW-2 ND μg/L UJ MW-2I ND μg/L UJ B-1 ND μg/L UJ B-1-a ND μg/L UJ B-3 ND μg/L UJ MW-2 ND μg/L UJ MW-2I ND μg/L UJ B-1 ND μg/L UJ B-1-a ND μg/L UJ B-3 ND μg/L UJ MW-2 ND μg/L UJ MW-2I ND μg/L UJ B-1 ND μg/L UJ B-1-a ND μg/L UJ B-3 ND μg/L UJ MW-2 ND μg/L UJ MW-2I ND μg/L UJ B-1 ND μg/L UJ B-1-a ND μg/L UJ B-3 ND μg/L UJ MW-2 ND μg/L UJ MW-2I ND μg/L UJ 180-133790-1 CCV in batch 180-389102 1,2,4-Trichlorobenzene Acetone 1,2,3-Trichlorobenzene, 1,4-Dioxane Methyl acetate Out NR Out NR Out NR Out NR Out NR ERM Page 5 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier B-1 ND μg/L UJ B-1-a ND μg/L UJ B-3 ND μg/L UJ MW-2 ND μg/L UJ MW-2I ND μg/L UJ MW-11 ND μg/L UJ MW-2A ND μg/L UJ MW-3 ND μg/L UJ MW-3I ND μg/L UJ MW-7 ND μg/L UJ MW-7I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-11 ND μg/L UJ MW-2A ND μg/L UJ MW-3 ND μg/L UJ MW-3I ND μg/L UJ MW-7 ND μg/L UJ MW-7I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-11 ND μg/L UJ MW-2A ND μg/L UJ MW-3 ND μg/L UJ MW-3I ND μg/L UJ NR1,4-Dioxane RRF not meeting criteria 1,2,3-Trichlorobenzene CCV in batch 180-389102 Out NR Out NR 1,2-Dibromo-3- Chloropropane Dichlorodifluoromethane CCV in batch 180-389226 180-133790-1 NROut ERM Page 6 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-7 ND μg/L UJ MW-7I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-11 ND μg/L UJ MW-2A ND μg/L UJ MW-3 ND μg/L UJ MW-3I ND μg/L UJ MW-7 ND μg/L UJ MW-7I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-11 ND μg/L UJ MW-2A ND μg/L UJ MW-3 ND μg/L UJ MW-3I ND μg/L UJ MW-7 ND μg/L UJ MW-7I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-11 ND μg/L UJ MW-2A ND μg/L UJ MW-3 ND μg/L UJ MW-3I ND μg/L UJ MW-7 ND μg/L UJ Out NR1,2,3-Trichlorobenzene 1,4-Dioxane Methyl acetate CCV in batch 180-389226180-133790-1 1,4-Dioxane Out NR Out NR NR RRF not meeting criteria ERM Page 7 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-7I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ 1,2-Dichloropropane ND μg/L UJ Bromomethane ND μg/L UJ Methylcyclohexane ND μg/L UJ MW-13 ND μg/L UJ MW-16 ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-8 ND μg/L UJ MW-8-a ND μg/L UJ MW-13 ND μg/L UJ MW-16 ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-8 ND μg/L UJ MW-8-a ND μg/L UJ MW-11-CCCV in batch 400-567694 NRHigh 180-133790-1 CCV in batch 180-389226 1,4-Dioxane RRF not meeting criteria NR CCV in batch 180-389414180-133839-1 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene Low NR Low NR ERM Page 8 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-13 ND μg/L UJ MW-16 ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-8 ND μg/L UJ MW-8-a ND μg/L UJ MW-13 ND μg/L UJ MW-16 ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-8 ND μg/L UJ MW-8-a ND μg/L UJ MW-13 ND μg/L UJ MW-16 ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-8 ND μg/L UJ MW-8-a ND μg/L UJ Acetone CCV in batch 180-389414180-133839-1 1,1-Dichloroethene Chloroethane High NR NRHigh High NR ERM Page 9 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-13 ND μg/L UJ MW-16 ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-8 ND μg/L UJ MW-8-a ND μg/L UJ MW-13 ND μg/L UJ MW-16 ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-8 ND μg/L UJ MW-8-a ND μg/L UJ MW-13 ND μg/L UJ MW-16 ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-8 ND μg/L UJ MW-8-a ND μg/L UJ CCV in batch 180-389414180-133839-1 NRHighChloromethane 1,4-Dioxane Methylene Chloride RRF not meeting criteria High NR NR ERM Page 10 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier 1,1-Dichloroethene Out NR ND μg/L UJ Carbon disulfide Out NR ND μg/L UJ Chloroethane Out NR ND μg/L UJ Dichlorodifluoromethane Out NR ND μg/L UJ 1,2,3-Trichlorobenzene Low NR ND μg/L UJ 1,2,4-Trichlorobenzene Low NR ND μg/L UJ 1,4-Dioxane RRF not meeting criteria NR ND μg/L UJ 1,2,3-Trichlorobenzene Low NR ND μg/L UJ 1,2,4-Trichlorobenzene Low NR ND μg/L UJ Methyl acetate Low NR ND μg/L UJ 2-Butanone Low NR ND μg/L UJ Chloroethane High NR ND μg/L UJ 1,1,2- Trichlorotrifluoroethane High NR ND μg/L UJ 1,4-Dioxane Out NR ND μg/L UJ 1,4-Dioxane RRF not meeting criteria NR ND μg/L UJ 180-133839-1 MW-16-c CCV in batch 180-389531 MW-12 CCV in batch 180-389659 ERM Page 11 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier 1,1-Dichloroethene Out NR ND μg/L UJ Carbon disulfide Out NR ND μg/L UJ Chloroethane Out NR ND μg/L UJ Dichlorodifluoromethane Out NR ND μg/L UJ 1,2,3-Trichlorobenzene Low NR ND μg/L UJ 1,2,4-Trichlorobenzene Low NR ND μg/L UJ 1,4-Dioxane RRF not meeting criteria NR ND μg/L UJ MW-10 ND μg/L UJ MW-10I ND μg/L UJ MW-14-C ND μg/L UJ MW-14I ND μg/L UJ MW-18I ND μg/L UJ MW-19I ND μg/L UJ MW-10 ND μg/L UJ MW-10I ND μg/L UJ MW-14-C ND μg/L UJ MW-14I ND μg/L UJ MW-18I ND μg/L UJ MW-19I ND μg/L UJ MW-10 ND μg/L UJ MW-10I ND μg/L UJ MW-14-C ND μg/L UJ MW-14I ND μg/L UJ MW-18I ND μg/L UJ 1,2,3-Trichlorobenzene 1,2,4-Trichlorobenzene CCV in batch 180-389531 180-133991-1 NRLowMethyl acetate CCV in batch 180-389659 Low NR NRLow MW-15 ERM Page 12 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier Methyl acetate Low NR MW-19I ND μg/L UJ MW-10 ND μg/L UJ MW-10I ND μg/L UJ MW-14-C ND μg/L UJ MW-14I ND μg/L UJ MW-18I ND μg/L UJ MW-19I ND μg/L UJ MW-10 ND μg/L UJ MW-10I ND μg/L UJ MW-14-C ND μg/L UJ MW-14I ND μg/L UJ MW-18I ND μg/L UJ MW-19I ND μg/L UJ MW-10 ND μg/L UJ MW-10I ND μg/L UJ MW-14-C ND μg/L UJ MW-14I ND μg/L UJ MW-18I ND μg/L UJ MW-19I ND μg/L UJ MW-10 ND μg/L UJ MW-10I ND μg/L UJ MW-14-C ND μg/L UJ MW-14I ND μg/L UJ MW-18I ND μg/L UJ MW-19I ND μg/L UJ NRHigh1,1,2- Trichlorotrifluoroethane NROut1,4-Dioxane CCV in batch 180-389659180-133991-1 2-Butanone High NRChloroethane Low NR ERM Page 13 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-10 ND μg/L UJ MW-10I ND μg/L UJ MW-14-C ND μg/L UJ MW-14I ND μg/L UJ MW-18I ND μg/L UJ MW-19I ND μg/L UJ MW-14 ND μg/L UJ MW-15I ND μg/L UJ MW-14 ND μg/L UJ MW-15I ND μg/L UJ MW-14 ND μg/L UJ MW-15I ND μg/L UJ MW-14 ND μg/L UJ MW-15I ND μg/L UJ MW-14 ND μg/L UJ MW-15I ND μg/L UJ MW-14 ND μg/L UJ MW-15I ND μg/L UJ MW-14 ND μg/L UJ MW-15I ND μg/L UJ MW-14 ND μg/L UJ MW-15I ND μg/L UJ NR RRF not meeting criteria 1,4-Dioxane 1,2,3-Trichlorobenzene CCV in batch 180-389659 CCV in batch 180-389738 180-133991-1 NR Out NR Out NR Out NR Out NR Out NR Out NR Out NR 1,2,4-Trichlorobenzene Dichlorodifluoromethane 1,4-Dioxane RRF not meeting criteria Carbon disulfide Chloroethane Methyl tert-butyl ether Methylene Chloride ERM Page 14 of 20 PN0600676 - 3/17/2022 Table 2 Calibration Verification Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier 1,2,3-Trichlorobenzene Low NR ------ 2-Butanone Low NR ------ Chloromethane Low NR ------ Methyl acetate Low NR ------ Methylcyclohexane Low NR ------ Vinyl chloride Low NR ------ Dichlorodifluoromethane Low NR ------ 1,4-Dioxane Out NR ------ 1,4-Dioxane RRF not meeting criteria NR ------ Lab packages reviewed: 180-133728-1, 180-133790-1, 180-133839-1, and 180-133991-1 Notes: CCV = Continuing calibration verification High = Recovery above maximum acceptable limit Low = Recovery below minimum acceptable limit ND = Not detected NR = Not reported Out = Result was outside of control limits RRF = Relative response factor μg/L = Micrograms per liter UJ = Nondetected, estimated report limit CCV in batch 180-389873 180-133991-1 None for qualificaiton, analytes not reported from this analytical batchCCV in batch 180-389873 ERM Page 15 of 20 PN0600676 - 3/17/2022 Table 3 Spike Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Spike Sample ID Associated Sample Analyte Recovery (%)Limit (%)RPD RPD Limit Result Units ERM Qualifier Acetone 70/100 26-193 36 35 ------ Chlorobenzene 71/83 72-123 16 19 ------ 1,2-Dichlorobenzene 48/73 68-116 41 20 ------ 1,3-Dichlorobenzene 54/76 70-119 34 18 ------ 1,4-Dichlorobenzene 54/76 74-117 34 17 ------ 1,1-Dichloroethene 85/128 49-132 28 23 ------ Methyl acetate 57/88 10-170 43 35 ------ Methylene Chloride 169/177 51-137 5 35 ------ MW-11I ND μg/L UJ MW-17I ND μg/L UJ MW-20I ND μg/L UJ MW-5 ND μg/L UJ MW-5I ND μg/L UJ MW-11I ND μg/L UJ MW-17I ND μg/L UJ MW-20I ND μg/L UJ MW-5 ND μg/L UJ MW-5I ND μg/L UJ Acetone 117/72 29-163 47 35 ------ Carbon disulfide 111/83 32-139 29 25 ------ Carbon tetrachloride 92/71 60-135 26 25 ------ Dichlorodifluoromethane 79/51 21-165 42 26 ------ 1,1-Dichloroethene 133/104 49-132 25 23 ------ 1,2,3-Trichlorobenzene 57/38 10-170 42 35 ------ 1,4-Dioxane 118/53 10-170 76 35 ------ 1,1,2-Trichlorotrifluoroethane 117/84 48-134 33 28 ------ Vinyl chloride 106/79 47-147 30 25 ------ 35 LCS LCS 180-388935/25 LCSD LCS 180-388935/26 None for qualification LCS/LCSD 1,2,4-Trichlorobenzene 6/7 15-169 6 180-133728-1 None for qualification LCS 180-389414/5 LCSD 180-389414/25180-133839-1 1,4-Dioxane 6/32 10-170 133 35 ERM Page 16 of 20 PN0600676 - 3/17/2022 Table 3 Spike Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Spike Sample ID Associated Sample Analyte Recovery (%)Limit (%)RPD RPD Limit Result Units ERM Qualifier 180-133839-1 180-133991-1 LCS 180-389738/3 None for qualification 1,4-Dioxane 175 10-170 ---------- Carbon disulfide 89/81 32-139 28 25 ------ Dichlorodifluoromethane 24/32 21-165 28 26 ------ trans-1,2-Dichloroethene 87/111 62-126 24 23 ------ Methylcyclohexane 49/62 60-127 23 26 ------ Methylene Chloride 129/163 51-137 23 35 ------ 1,2,3-Trichlorobenzene 42/69 10-170 48 35 ------ 1,4-Dioxane 59/124 10-170 71 35 Trichlorofluoromethane 51/74 32-157 37 35 ------ Vinyl chloride 52/76 47-147 37 25 ------ B-1 ND μg/L UJ B-1-a ND μg/L UJ B-1 ND μg/L -- B-1-a ND μg/L -- Benzene 112/80 68-122 33 21 ND μg/L -- Chlorobromomethane 112/80 59-133 34 26 ND μg/L -- Chlorodibromomethane 99/74 51-144 30 25 ND μg/L -- Chloroform 103/69 62-121 39 22 ND μg/L -- 1,1-Dichloroethane 131/51 59-125 46 20 8.12 μg/L J 1,2-Dichloroethane 111/73 57-149 41 27 ND μg/L -- cis-1,2-Dichloroethene 120/62 64-122 43 22 ND μg/L -- trans-1,3-Dichloropropene 104/74 57-137 34 25 ND μg/L -- Methyl tert-butyl ether 124/74 36-141 50 35 ND μg/L -- Methyl acetate 96/53 10-170 57 35 ND μg/L -- 1,1,1-Trichloroethane 112/85 64-133 27 22 ND μg/L -- MS/MSD MS B-1 MSD B-1180-133790-1 None for qualification LCS 180-389873/25 LCSD 180-389873/26180-133991-1 NC 5 35 20 Acetone 1,2-Dichlorobenzene 0/0 121/115 29-163 68-116 MS MW-18I MSD MW-18I MW-18I180-133991-1 ERM Page 17 of 20 PN0600676 - 3/17/2022 Table 3 Spike Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Spike Sample ID Associated Sample Analyte Recovery (%)Limit (%)RPD RPD Limit Result Units ERM Qualifier Acetone 75/115 29-163 42 35 ND μg/L -- 1,1-Dichloroethane 127/111 59-125 14 20 ND μg/L -- cis-1,2-Dichloroethene 138/81 64-122 12 22 ND μg/L -- 1,2,3-Trichlorobenzene 40/58 10-170 36 35 ND μg/L -- 1,4-Dioxane NC/NC 10-170 NC 35 ND μg/L R Vinyl chloride 27/-2 47-147 21 25 12.6 μg/L J Notes: J = Estimated result High = Recovery or RPD exceeds limit LCS/LCSD = Laboratory control sample/laboratory control sample duplicate MS/MSD = Matrix spike/matrix spike duplicate NR = Not reported Out = Result was outside of control limits R = Result is rejected RPD = Relative percent difference μg/L = Micrograms per liter UJ = Nondetected, estimated report limit Lab packages reviewed: 180-133728-1, 180-133790-1, 180-133839-1, and 180-133991-1 MW-15IMS MW-15I MSD MW-15I180-133991-1 ERM Page 18 of 20 PN0600676 - 3/17/2022 Table 4 Internal Standard Recoveries Outside of Acceptable Limits February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Sample ID Method Internal Standard Recovery (%)Limit (%)Affected Analyte ERM Qualifier MW-5 -- MW-20I -- 180-133991-1 MW-14I 8260D 1,4-Dichlorobenzene-d4 Out NR None for qualification, ISTD does not correspond to target analytes -- Lab packages reviewed: 180-133728-1, 180-133790-1, 180-133839-1, and 180-133991-1 Notes: ISTD = Internal standard NR = Not reported Out = Recovery outside acceptable limits (high/low unspecified) TBA-d9 = tert-Butyl alcohol-d9 None for qualification, ISTD does not correspond to target analytes180-133728-1 8260D TBA-d9 Out NR ERM Page 19 of 20 PN0600676 - 3/17/2022 Table 5 Field Duplicate Results and Calculated Relative Percent Differences February 2022 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Primary/Duplicate Sample ID Analyte Sample Duplicate Sample Duplicate Difference Difference Limit Units RPD RPD Limit ERM Qualifier cis-1,2-Dichloroethene 6.12 5.82 5.00 5.00 0.30 10.00 μg/L ------ 1,4-Dioxane 7.68 7.96 1.00 1.00 ----μg/L 3.6 30 -- cis-1,2-Dichloroethene 88.0 87.1 50.0 50.0 0.9 100.0 μg/L ------ Trichloroethene 11.9 12.9 5.00 5.00 1.00 10.00 μg/L ------ 1,1-Dichloroethane 13.6 14.6 5.00 5.00 1.00 10.00 μg/L ------ 1,4-Dioxane 3.69 3.95 1.00 1.00 0.26 2.00 μg/L ------ Notes: RPD = Relative percent difference μg/L = Micrograms per liter Lab packages reviewed: 180-133728-1, 180-133790-1, 180-133839-1, and 180-133991-1 Concentration Report Limit 180-133790-1 B-1 B-1-a 180-133839-1 MW-8 MW-8-a ERM Page 20 of 20 PN0600676 - 3/17/2022 ERM 1050 SW 6th Avenue Suite 1650 Portland, OR 97204 Telephone: (503) 488-5282 Fax: (503) 488-5124 www.erm.com Page 1 of 3 © Copyright 2021 by ERM Worldwide Group Limited and/or its affiliates (‘ERM’). All Rights Reserved. No part of this work may be reproduced or transmitted in any form or by any means, without prior written permission of ERM. Memorandum To Justin Dauphinais From Jack James Date 06 December 2021 Reference 0600676 Subject Data Review of EDO Western Corp. Fourth Quarter 2021 Groundwater Samples, November 2021: Eurofins TestAmerica Data Packages 180-129621-1, 180-129623-1, and 180-129668-1. The data quality was assessed and any necessary qualifiers were applied following the USEPA National Functional Guidelines for Organic Superfund Methods Data Review, November 2020 and the Groundwater Monitoring and Vapor Intrusion Assessment Work Plan, EDO Western Corporation Acoustic Sensors Facility, South Salt Lake City, Utah, August 2019. Field duplicates were assessed following Environmental Data Review Supplement for Region 1 Data Review Elements and Superfund Specific Guidance/Procedures, September 2020. NON-PREFERRED RESULTS The laboratory analyzed several samples past the 14 day recommended hold time for volatile organic compounds (VOCs) due to results exceeding the calibration range or laboratory quality control criteria not being met. In these instances the in-hold results were considered the preferred results with three exceptions. The cis-1,2-dichloroethene results analyzed past the recommended hold-time for samples MW-9I, MW-9I-A, and MW-12I were conservatively considered preferred as they were within the instrument’s calibration range and were greater than the in-hold results. The non-preferred results are presented in Table 1. No additional review was performed or qualifications applied to these sample results. SAMPLE RECEIPT COMMENTS The case narrative for report 180-129621-1 described that a different number of containers were received by the laboratory than what was listed on the chain of custody. The laboratory was not able to analyze and perform the matrix spike analysis for 8260D-SIM as requested. No qualifications were necessary; however, any potential matrix effect could not be assessed for analytical batch 400- 555446. ERM 06 December 2021 Justin Dauphinais Page 2 of 3 HOLDING TIME AND PRESERVATION EVALUATION The samples were prepared and analyzed within the method-prescribed time period from the date of collection, with three exceptions. Samples MW-9I, MW-9I-A, and MW-12I were analyzed past the 14 day recommended hold time for VOCs due to the initial results exceeding the instrument’s calibration range. Consequently, the detected results were qualified as estimates with no bias (J). The qualified results are presented in Table 2. The sample shipments were received at the laboratory within the method-prescribed temperature preservation requirements of less than 6°C. BLANK EVALUATION The method and trip blank sample results were non-detected for each of the target analytes. No data were qualified on the basis of the blank evaluation. The blank results indicate that no contaminants were introduced to the samples during processing or analysis in the laboratory or during shipment, handling, and storage. CONTINUING CALIBRATION VERIFICATION EVALUATION The case narratives for reports 180-129621-1 and 180-129668-1 described that continuing calibration verification (CCV) samples were outside the control limits for several analytes. Qualifications were not necessary if the reported CCV recovery was not associated with sample results. Non-detect sample results associated with CCV outliers were quailed as estimates (UJ). The CCV outliers and qualified data are presented in Table 3. BLANK SPIKE EVALUATION The laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and relative percent differences (RPDs) were within the laboratory’s limits of acceptance, with the exceptions noted in Table 4. No data were qualified if the sample results were not associated with the LCS/LCSD samples. Additionally, no data were qualified if an outlier could be verified by another in-control recovery, or based on RPDs if both the LCS and LCSD recoveries were within laboratory limits. No qualifications were required. MATRIX SPIKE EVALUATION The laboratory prepared several non-project samples for matrix spike (MS) and matrix spike duplicate (MSD) analysis. MS samples from non-project parent samples are not representative of the matrix for this project and were therefore not reviewed in this validation effort. The matrix spike (MS)/matrix spike duplicate (MSD) recoveries and RPDs were within laboratory limits of acceptance for samples prepared from project samples, with two exceptions. No data were qualified if the outlier can be verified by an in-control result. Also, no data were qualified based on RPD as both the MS/MSD recoveries were within laboratory limits. No data were qualified. The outliers can be found in Table 4. ERM 06 December 2021 Justin Dauphinais Page 3 of 3 SURROGATE SPIKE EVALUATION The surrogate recoveries were within acceptable limits, with several exceptions. No qualifications were required based on high surrogate recoveries if the associated analytes were not detected in the sample. The detected result for cis-1,2-dichloroethene in sample MW-15I was as quailed as an estimate with a high bias (J+) due to a high surrogate recovery. The surrogate outliers and qualified data are presented in Table 5. CALIBRATION RANGE EXCEEDANCES Results for several analytes exceeded the instrument’s calibration range. No qualifications were required for calibration exceedances in laboratory quality control samples. The laboratory reanalyzed several project samples beyond the recommended hold time due to the calibration range exceedances. However, in the instances presented and qualified in this memorandum, the initial result was greater than the reanalysis. Therefore, the initial results were conservatively considered preferred. The results were qualified as estimated (J) due to the uncertainty beyond the instrument’s calibrated range. The qualified results are presented in Table 6. INTERNAL STANDARD EVALUATION The laboratory identified several samples with internal standard recoveries that did not meet laboratory or method criteria. The identified sample results associated with the affected internal standards were qualified as estimates (UJ). The qualified data are presented in Table 7. FIELD DUPLICATE EVALUATION Two samples were submitted in duplicate. ERM calculated the differences or RPDs between detected results in Table 8. An RPD control limit of 30 was used for aqueous samples when both the sample and the field duplicate results were greater than or equal to five times the reporting limit. A control limit of ± two times the reporting limit for the calculated differences was used when at least one of the results was less than five times the reporting limit (RL). When one result was greater than the RL and the other was not detected (ND), the RL for the ND result was used for calculation purposes. All calculated RPDs and differences were within the control limits indicating acceptable field precision. OVERALL ASSESSMENT None of the data required rejection. All of the data, including qualified data, can be used for decision- making purposes; however, the limitations indicated by the applied qualifiers should be considered when using the data. The quality of the data generated during this investigation is acceptable for the preparation of technically defensible documents. Table 1 Samples with Non-Preferred Results November 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Sample ID Method Analysis Date/Time Reason Analyte Result Units MW-10 8260D 11/23/2021 17:59 All μg/L MW-10I 8260D 11/23/2021 18:25 All μg/L MW-14I 8260D 11/23/2021 15:22 All μg/L MW-15I 8260D 11/23/2021 15:48 All μg/L MW-15-c 8260D 11/23/2021 16:14 All μg/L MW-9 8260D 11/23/2021 16:40 All μg/L MW-7I 8260D 11/23/2021 18:51 All μg/L MW-9I 8260D 11/23/2021 17:07 All except cis-1,2- Dichloroethene μg/L MW-9I-a 8260D 11/23/2021 17:33 All except cis-1,2- Dichloroethene μg/L MW-9I 8260D 11/17/2021 22:48 cis-1,2-Dichloroethene 1470 μg/L MW-9I-a 8260D 11/17/2021 23:12 cis-1,2-Dichloroethene 1520 μg/L MW-2 8260D 11/17/2021 13:53 μg/L MW-2a 8260D 11/17/2021 14:19 μg/L MW-2I 8260D 11/17/2021 14:45 μg/L MW-17I 8260D 11/17/2021 15:11 μg/L MW-17I-c 8260D 11/17/2021 15:36 μg/L Detects and NDs 180-129621-1 Result exceeded calibration range and out-of-hold result greater than in-hold Analyzed one day past the recommended hold time All Analyzed six days past the recommended hold time NDs180-129623-1 ERM Page 1 of 11 PN0600676 - 12/6/2021 Table 1 Samples with Non-Preferred Results November 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Sample ID Method Analysis Date/Time Reason Analyte Result Units 11/19/2021 9:04 Analyzed one day past the recommended hold time All except cis-1,2-Dichloroethene Detects and NDs μg/L 11/18/2021 14:27 Result exceeded calibration range and out-of-hold result greater than in-hold cis-1,2-Dichloroethene 297 μg/L Lab packages reviewed: 180-129621-1, 180-129623-1, and 180-129668-1 Notes: ND = Not detected μg/L = Micrograms per liter 8260DMW-12I180-129668-1 ERM Page 2 of 11 PN0600676 - 12/6/2021 Table 2 Samples with Exceeded Holding Times November 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Sample ID Method Analysis Holding Time Time Exceeded Affected Analyte ERM Qualifier MW-9I 6 Days cis-1,2-Dichloroethene J MW-9I-a 6 Days cis-1,2-Dichloroethene J 180-129668-1 MW-12I 8260D 14 Days 1 Day cis-1,2-Dichloroethene J Lab packages reviewed: 180-129621-1, 180-129623-1, and 180-129668-1 Notes: J = Estimated detected result 8260D 14 Days180-129621-1 ERM Page 3 of 11 PN0600676 - 12/6/2021 Table 3 Calibration Verification Recoveries Outside of Acceptable Limits November 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-10 ND μg/L UJ MW-10I ND μg/L UJ MW-14 ND μg/L UJ MW-14I ND μg/L UJ MW-15 ND μg/L UJ MW-15-c ND μg/L UJ MW-15I ND μg/L UJ MW-20I ND μg/L UJ MW-7 ND μg/L UJ MW-7I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-9I-a ND μg/L UJ MW-10 ND μg/L UJ MW-10I ND μg/L UJ MW-14 ND μg/L UJ MW-14I ND μg/L UJ MW-15 ND μg/L UJ MW-15-c ND μg/L UJ MW-15I ND μg/L UJ MW-20I ND μg/L UJ MW-7 ND μg/L UJ MW-7I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-9I-a ND μg/L UJ CCV in batch 180-379192180-129621-1 NRLow4-Methyl-2- pentanone NRHighMethylene Chloride ERM Page 4 of 11 PN0600676 - 12/6/2021 Table 3 Calibration Verification Recoveries Outside of Acceptable Limits November 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-10 ND μg/L UJ MW-10I ND μg/L UJ MW-14 ND μg/L UJ MW-14I ND μg/L UJ MW-15 ND μg/L UJ MW-15-c ND μg/L UJ MW-15I ND μg/L UJ MW-20I ND μg/L UJ MW-7 ND μg/L UJ MW-7I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-9I-a ND μg/L UJ Lab packages reviewed: 180-129621-1, 180-129623-1, and 180-129668-1 Notes: CCV = Continuing calibration verification High = Recovery above maximum acceptable limit Low = Recovery below minimum acceptable limit ND = Not detected NR = Not reported Out = Result was outside of control limits RRF = Relative response factor μg/L = Micrograms per liter UJ = Nondetected, estimated report limit NR RRF not meeting criteria 1,4-DioxaneCCV in batch 180-379192180-129621-1 ERM Page 5 of 11 PN0600676 - 12/6/2021 Table 4 Spike Recoveries Outside of Acceptable Limits November 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Spike Sample ID Associated Sample Analyte Recovery (%)Limit (%)RPD RPD Limit Result Units ERM Qualifier 2-Hexanone 146/172 38-157 16 35 ------ Acetone 136/209 29-136 43 35 ------ 1,4-Dioxane Out/NR NR NR NR ------ 2-Butanone 55/38 35-158 36 35 ------ 1,2,3-Trichlorobenzene 170/225 10-170 28 35 ------ 1,2,4-Trichlorobenzene 164/202 15-169 21 35 ------ Dichlorodifluoromethane 97/93 21-165 27 26 ------ Trichlorofluoromethane 172/147 32-157 15 35 ------ Notes: LCS/LCSD = Laboratory control sample/laboratory control sample duplicate MS/MSD = Matrix spike/matrix spike duplicate NR = Not reported Out = Result was outside of control limits RPD = Relative percent difference LCS 180-379918/7 LCSD 180-379918/8 None for qualification, sample results were not reported from this batch 180-129621-1 Lab packages reviewed: 180-129621-1, 180-129623-1, and 180-129668-1 LCS/LCSD MS/MSD MW-7MW-7 MS/MSD180-129621-1 None for qualification LCS 180-379033/4 LCSD 180-379033/5180-129623-1 ERM Page 6 of 11 PN0600676 - 12/6/2021 Table 5 Surrogate Recovery Results out of Acceptable Limits November 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Sample ID Method Surrogate Recovery (%)Limit (%)Affected Analyte Dilution Factor ERM Qualifier MW-15I 8260D Dibromofluoromethane 133 60-132 cis-1,2-Dichloroethene 1 J+ MW-15-c 8260D Dibromofluoromethane 138 60-132 None for qualificaiton 1 -- MW-2 8260D Dibromofluoromethane 145 60-132 None for qualificaiton 1 -- MW-11I 8260D Dibromofluoromethane 139 60-132 None for qualificaiton 1 -- MW-11 8260D Dibromofluoromethane 148 60-132 None for qualificaiton 1 -- MW-2a 8260D Dibromofluoromethane 154 60-132 None for qualificaiton 1 -- 1,2-Dichloroethane-d4 177 52-151 None for qualificaiton 1 -- Dibromofluoromethane 163 60-132 None for qualificaiton 1 -- 1,2-Dichloroethane-d4 185 52-151 None for qualificaiton 1 -- Dibromofluoromethane 177 60-132 None for qualificaiton 1 -- 1,2-Dichloroethane-d4 181 52-151 None for qualificaiton 1 -- Dibromofluoromethane 167 60-132 None for qualificaiton 1 -- Lab packages reviewed: 180-129621-1, 180-129623-1, and 180-129668-1 Notes: J+ = Detected results are estimated with a high bias 8260DMW-17I-c 180-129623-1 180-129621-1 8260DMW-2I 8260DMW-17I ERM Page 7 of 11 PN00600676 - 12/6/2021 Table 6 Calibration Range Exceedances November 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Sample ID Analyte Reported Concentration Units ERM Qualifier MW-10-110321 cis-1,2-Dichloroethene 406 μg/L J MW-10I-110321 Trichloroethene 65.8 μg/L J MW-10I-110321 cis-1,2-Dichloroethene 871 μg/L J MW-14I-110321 Trichloroethene 188 μg/L J MW-14I-110321 cis-1,2-Dichloroethene 408 μg/L J MW-9-110321 cis-1,2-Dichloroethene 251 μg/L J MW-9I-110321 Trichloroethene 199 μg/L J MW-9I-A-110321 Trichloroethene 212 μg/L J 2-Hexanone 31.81 μg/L -- 1,2,3-Trichlorobenzene 68.18 μg/L -- 1,2,4-Trichlorobenzene 65.56 μg/L -- 1,2,3-Trichlorobenzene 90.17 μg/L -- 1,2,4-Trichlorobenzene 80.94 μg/L -- Lab packages reviewed: 180-129621-1, 180-129623-1, and 180-129668-1 Notes: J = Sample result qualified as estimated μg/L = Micrograms per liter 180-129621-1 LCS 180-379033/4 LCSD 180-379033/5 180-129623-1 ERM Page 8 of 11 PN0600676 - 12/6/2021 Table 7 Internal Standard Recoveries Outside of Acceptable Limits November 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Sample ID Method Internal Standard Recovery (%)Limit (%)Affected Analyte ERM Qualifier 1,4-Dichlorobenzene UJ 1,3-Dichlorobenzene UJ 1,2-Dichlorobenzene UJ 1,2-Dibromo-3-chloropropane UJ 1,2,3-Trichlorobenzene UJ 1,2,4-Trichlorobenzene UJ 1,2-Dibromo-3-Chloropropane UJ 1,2-Dichlorobenzene UJ 1,3-Dichlorobenzene UJ 1,4-Dichlorobenzene UJ 1,2,3-Trichlorobenzene UJ 1,2,4-Trichlorobenzene UJ 1,2-Dibromo-3-Chloropropane UJ 1,2-Dichlorobenzene UJ 1,3-Dichlorobenzene UJ 1,4-Dichlorobenzene UJ 1,2,3-Trichlorobenzene UJ 1,2,4-Trichlorobenzene UJ MW-17I 8260D Not specified Out NR All VOCs UJ 180-129621-1 NROutNot specified8260DMW-2a NROutNot specified8260DMW-9 180-129623-1 NROutNot specified8260DMW-2I ERM Page 9 of 11 PN0600676 - 12/6/2021 Table 7 Internal Standard Recoveries Outside of Acceptable Limits November 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Sample ID Method Internal Standard Recovery (%)Limit (%)Affected Analyte ERM Qualifier 1,2-Dibromo-3-Chloropropane UJ 1,2-Dichlorobenzene UJ 1,3-Dichlorobenzene UJ 1,4-Dichlorobenzene UJ 1,2,3-Trichlorobenzene UJ 1,2,4-Trichlorobenzene UJ Lab packages reviewed: 180-129621-1, 180-129623-1, and 180-129668-1 Notes: NR = Not reported Out = Recovery outside acceptable limits (high/low unspecified) μg/L = Micrograms per liter UJ = Nondetected, estimated report limit VOCs = Volatile organic compounds 180-129623-1 8260D Not specified Out NRMW-17I-c ERM Page 10 of 11 PN0600676 - 12/6/2021 Table 8 Field Duplicate Results and Calculated Relative Percent Differences November 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Primary/Duplicate Sample ID Analyte Sample Duplicate Sample Duplicate Difference Difference Limit Units RPD RPD Limit ERM Qualifier 1,1-Dichloroethene 27.9 20.8 5.00 5.00 7.10 10.00 μg/L NC NA -- 1,2-Dichloroethane 36.5 37.1 5.00 5.00 NC NA μg/L 1.6 30 -- cis-1,2-Dichloroethene 1620 1690 1000 1000 70 2000 μg/L NC NA -- Tetrachloroethene 8.82 9.31 5.00 5.00 0.49 10.00 μg/L NC NA -- trans-1,2-Dichloroethene 26.6 28.7 5.00 5.00 NC NA μg/L 7.6 30 -- Trichloroethene 199 212 5.00 5.00 NC NA μg/L 6.3 30 -- Vinyl chloride 14.6 ND1 5.00 5.00 9.60 10.00 μg/L NC NA -- 1,4-Dioxane 5.90 5.58 1.00 1.00 NC NA μg/L 5.6 30 -- cis-1,2-Dichloroethene 245 228 1.57 1.57 NC NA μg/L 7.2 30 -- 1,1-Dichloroethane 34.2 32.6 1.81 1.81 NC NA μg/L 4.8 30 -- 1,2-Dichloroethane 5.26 5.02 1.45 1.45 0.24 2.90 μg/L ------ Trichloroethene 73.3 71.4 1.50 1.50 NC NA μg/L 2.6 30 -- 1,1-Dichloroethene 9.66 9.39 2.85 2.85 0.27 5.70 μg/L ------ 1,4-Dioxane 6.27 6.28 0.300 0.300 NC NA μg/L 0.16 30 -- Vinyl chloride 13.9 13.3 3.67 3.67 0.60 7.34 μg/L ------ Notes: 1 = Report limit used for calculation NA = Not analyzed NC = Not calculated ND = Not detected RPD = Relative percent difference μg/L = Micrograms per liter Lab packages reviewed: 180-129621-1, 180-129623-1, and 180-129668-1 Concentration Report Limit 180-129621-1 MW-9I MW-9I-a 280-151378-1 280-151378-2 MW-8 MW-8-a ERM Page 11 of 11 PN0600676 - 12/6/2021 ERM 1050 SW 6th Avenue Suite 1650 Portland, OR 97204 Telephone: (503) 488-5282 Fax: (503) 488-5124 www.erm.com Page 1 of 3 © Copyright 2021 by ERM Worldwide Group Limited and/or its affiliates (‘ERM’). All Rights Reserved. No part of this work may be reproduced or transmitted in any form or by any means, without prior written permission of ERM. Memorandum To Justin Dauphinais From Jack James Date 07 October 2021 Reference 0600676 Subject Data Review of EDO Western Corp. Third Quarter 2021 Groundwater Samples, July 2021: Eurofins TestAmerica Data Packages 280-151322-1, 280-151322-2, 280-151378-1, 280-151378-2, 280-151937-1, and 280-151937-2. The data quality was assessed and any necessary qualifiers were applied following the USEPA National Functional Guidelines for Organic Superfund Methods Data Review, November 2020 and the Groundwater Monitoring and Vapor Intrusion Assessment Work Plan, EDO Western Corporation Acoustic Sensors Facility, South Salt Lake City, Utah, August 2019. Field duplicates were assessed following Environmental Data Review Supplement for Region 1 Data Review Elements and Superfund Specific Guidance/Procedures, June 2018. REVISION This validation memorandum was revised to include the additional 1,4-dioxane results for samples MW -3I, MW-6I, MW-7, MW-7I, and MW-9I. SAMPLE RECEIPT COMMENTS The case narratives for reports 280-151322-1 and 280-151378-1 described that sample containers had a different collection time than the time listed on the chain of custody (COC). The laboratory logged the samples in with the collection time shown on the COCs. Additionally, a trip blank sample was submitted with the samples from report 280-151937-1 but was not listed on the COC. The laboratory logged the sample in and analyzed it for volatile organic compound (VOC) analysis. HOLDING TIME AND PRESERVATION EVALUATION The samples were prepared and analyzed within the method-prescribed time period from the date of collection. The sample shipments were received at the laboratory within the method-prescribed temperature preservation requirements of less than 6°C, with one exception. The sample shipment containing samples MW-3I, MW-6I, MW-8, MW-19I, MW-17I-c, MW-9I, MW-10, MW-7, and MW-7I for reports 280-151378-1 and 280-151378-2 arrived at the laboratory at 18.3°C. Select samples of MW -8, MW-10, and MW-19I were recollected and qualifications were not necessary for these samples. Additionally, the requested analysis for the trip blank of MW-17I-c was cancelled. The remaining sample results were compared to historical data for the non-detect results and were found ERM 07 October 2021 Justin Dauphinais Page 2 of 3 to be in agreement. Therefore, they were not rejected but qualified as estimated at the reporting limit (UJ). Detected results were qualified as estimates with no bias (J). The qualified sample results are presented in Table 1. Samples MW -51-C and MW-8-c arrived at the laboratory with a measured pH of greater than two for VOC analysis. These samples were analyzed within the shortened hold time of seven days and qualifications were not necessary. BLANK EVALUATION The method and equipment blank sample results were non-detected for each of the target analytes, with three exceptions. Target analyte 1,4-dioxane was detected in trip blank samples TB MW-5I-C and TB MW-8-C and the method blank MB 280-546098/6. Non-detected results or results greater than five times the blank concentration for organics were considered not affected by the contamination and were not qualified. Results within five times the blank concentration and less than the reporting limit were qualified as non-detect (U) at the reporting limit. Results within five times the blank concentration and greater than the reporting limit were qualified as estimated with a high bias (J+). The blank detections and associated data are presented in Table 2. Trip blank results associated with samples MW -3I, MW -6I, MW -9I, MW -7, and MW -7I for VOC analysis were not available for assessment. It is not possible to assess whether volatile organic compound detections in these samples were potentially influenced by cross-contamination during shipment, handling, and storage. CONTINUING CALIBRATION VERIFICATION EVALUATION The case narrative for report 280-151378-1 from batch 280-545303 described that a continuing calibration verification (CCV) sample was recovered above the upper control limit for chloromethane. However, chloromethane was detected in the associated samples and qualifications were not necessary. BLANK SPIKE EVALUATION The laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and relative percent differences (RPDs) were within the laboratory’s limits of acceptance, with the exceptions noted in Table 3. No data were qualified based on RPDs as both the LCS and LCSD recoveries were within laboratory limits. No qualifications were required. The laboratory case narrative described the RPDs for 1,1,2-trichloro-1,2,2-trifluoroethane and methylcyclohexane exceeded the laboratory control limit. However, these analytes are not reported for project samples and qualifications were not necessary. MATRIX SPIKE EVALUATION The laboratory prepared several non-project samples for matrix spike (MS) and matrix spike duplicate (MSD) analysis. MS samples from non-project parent samples are not representative of the matrix for this project and were therefore not reviewed in this validation effort. ERM 07 October 2021 Justin Dauphinais Page 3 of 3 The matrix spike (MS)/matrix spike duplicate (MSD) recoveries and RPDs were within laboratory limits of acceptance for samples prepared from project samples, indicating acceptable laboratory accuracy and precision and minimal matrix interference. SURROGATE SPIKE EVALUATION The surrogate recoveries were within acceptable limits. No qualifications were required based on surrogate recoveries. The surrogate recoveries indicate minimal matrix interference in the samples. FIELD DUPLICATE EVALUATION Three samples were submitted in duplicate. ERM calculated the differences or RPDs between detected results in Table 4. An RPD control limit of 30 was used for aqueous samples when both the sample and the field duplicate results were greater than or equal to five times the reporting limit. A control limit of ± two times the reporting limit for the calculated differences was used when at least one of the results was less than five times the reporting limit. Control limits were not applicable when both results were below the reporting limits or if one result was not detected. Vinyl chloride in sample pair MW -14I/MW-14I-a did not meet the field duplicate criteria and the results in the parent and field duplicate samples were qualified as estimates (J). OVERALL ASSESSMENT None of the data required rejection. All of the data, including qualified data, can be used for decision- making purposes; however, the limitations indicated by the applied qualifiers should be considered when using the data. The quality of the data generated during this investigation is acceptable for the preparation of technically defensible documents. Table 1 Samples with Exceeded Preservation Requirements July 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Sample ID Method Preservation Condition Limits ERM Qualifier MW-3I UJ MW-6I UJ MW-7 UJ MW-7I UJ MW-3I UJ1 MW-6I UJ1 MW-9I J MW-7 UJ1 MW-7I UJ1 Notes: 1 = Qualified for blank contamination °C = Degrees Celsius J = Estimated detected result UJ = Nondetected, estimated report limit Lab packages reviewed: 280-151322-1, 280-151322-2, 280-151378-1, 280-151378-2, 280-151937-1, and 280-151937-2 <6 °C18.3 °CMW-9I280-151378-1 SW8260B J Detects UJ Non-detects SW8260B SIM 18.3 °C <6 °C280-151378-2 ERM Page 1 of 5 PN0600676 - 10/7/2021 Table 2 Blank and Associated Suspect Sample Detections July 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Blank ID Associated Sample Detected Analyte Reported Blank Concentration Blank Report Limit Associated Sample Result Associated Sample Report Limit Units ERM Qualifier MW-2I 0.271 1.40 μg/L 1.40 U MW-2A 0.796 1.40 μg/L 1.40 U MW-2 0.372 1.40 μg/L 1.40 U MW-16 2.54 1.40 μg/L J+ MW-15 0.635 1.40 μg/L 1.40 U MW-14 0.305 1.40 μg/L 1.40 U MW-13 1.78 1.40 μg/L J+ MW-12 1.49 1.40 μg/L J+ B-1 2.81 1.40 μg/L J+ MW-9-A 1.38 1.40 μg/L 1.40 U MW-6 0.384 1.40 μg/L 1.40 U MW-20I-A 0.609 1.40 μg/L 1.40 U MW-20I 0.492 1.40 μg/L 1.40 U MW-17I 1.21 1.40 μg/L 1.40 U MW-11I 0.804 1.40 μg/L 1.40 U MW-3I 0.420 1.40 μg/L 1.40 UJ1 MW-6I 1.02 1.40 μg/L 1.40 UJ1 MW-7 0.499 1.40 μg/L 1.40 UJ1 MW-7I 0.439 1.40 μg/L 1.40 UJ1 1,4-DioxaneTB MW-5I-C280-151322-2 0.730 1.40 1.400.2891,4-DioxaneTB MW-8-C280-151378-2 ERM Page 2 of 5 PN0600676 - 10/7/2021 Table 2 Blank and Associated Suspect Sample Detections July 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Blank ID Associated Sample Detected Analyte Reported Blank Concentration Blank Report Limit Associated Sample Result Associated Sample Report Limit Units ERM Qualifier 280-151378-2 MB 280-546098/6 None for qualification 1,4-Dioxane 0.3355 1.40 ----μg/L -- Notes: 1 = Qualified for additional preservation condition J+ = Detected results are estimated with a high bias MB = Method blank TB = Trip blank U = Nondetected μg/L = Micrograms per liter UJ = Nondetected, estimated report limit Lab packages reviewed: 280-151322-1, 280-151322-2, 280-151378-1, 280-151378-2, 280-151937-1, and 280-151937-2 ERM Page 3 of 5 PN0600676 - 10/7/2021 Table 3 Spike Recoveries Outside of Acceptable Limits July 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Spike Sample ID Associated Sample Analyte Recovery (%)Limit (%)RPD RPD Limit Result Units ERM Qualifier Benzene 100/79 65-135 23 20 ------ Carbon disulfide 99/78 55-143 23 20 ------ Carbon tetrachloride 117/92 65-135 24 21 ------ Dichlorobromomethane 105/85 65-135 21 20 ------ Dichlorodifluoromethane 82/59 43-142 33 20 ------ 1,1-Dichloroethene 93/77 65-136 24 20 ------ 1,1,1-Trichloroethane 104/83 65-135 22 20 ------ Notes: LCS/LCSD = Laboratory control sample/laboratory control sample duplicate RPD = Relative percent difference Lab packages reviewed: 280-151322-1, 280-151322-2, 280-151378-1, 280-151378-2, 280-151937-1, and 280-151937-2 LCS/LCSD LCS 280-545303/4 LCSD 280-545303/5280-151378-1 None for qualification ERM Page 4 of 5 PN0600676 - 10/7/2021 Table 4 Field Duplicate Results and Calculated Relative Percent Differences July 2021 Groundwater Samples EDO Western Corp. South Salt Lake City, Utah Lab Package Primary/Duplicate Sample ID Analyte Sample Duplicate Sample Duplicate Difference Difference Limit Units RPD RPD Limit ERM Qualifier cis-1,2-Dichloroethene 285 318 10.0 4.00 ----μg/L 10.9 30 -- Trichloroethene 144 139 1.00 4.00 ----μg/L 3.53 30 -- Vinyl chloride 17.6 15.3 1.00 4.00 2.30 2.00 μg/L ----J 1,1-Dichloroethene 21.3 20.1 1.00 4.00 ----μg/L 5.8 30 -- trans-1,2-Dichloroethene 3.61 ND 1.00 4.00 NA NA μg/L NA NA -- Tetrachloroethene 36.0 40.0 1.00 4.00 ----μg/L 10.5 30 -- 1,1-Dichloroethane 43.0 39.8 1.00 4.00 ----μg/L 7.73 30 -- 1,2-Dichloroethane 8.04 7.82 1.00 4.00 0.220 2.00 μg/L ------ 1,4-Dioxane 25.5 26.3 1.40 1.40 ----μg/L 3.09 30 -- Vinyl chloride 21.0 17.7 5.00 5.00 3.30 10.0 μg/L ------ cis-1,2-Dichloroethene 306 317 5.00 5.00 ----μg/L 3.53 30 -- trans-1,2-Dichloroethene 6.68 5.30 5.00 5.00 1.38 10.0 μg/L ------ 1,4-Dioxane 1.73 ND1 1.40 1.40 NA NA μg/L NA NA -- MW-20I MW-20I-a 1,4-Dioxane ND1 ND1 1.40 1.40 NA NA μg/L NA NA -- Notes: 1 = Qualified for blank contamination J = Estimated detected result NA = Not analyzed ND = Not detected RPD = Relative percent difference μg/L = Micrograms per liter Lab packages reviewed: Lab packages reviewed: 280-151322-1, 280-151322-2, 280-151378-1, 280-151378-2, 280-151937-1, and 280-151937-2 Concentration Report Limit 280-151322-1 280-151322-2 MW-9/ MW-9-a MW-14I/ MW-14I-a 280-151378-1 280-151378-2 ERM Page 5 of 5 PN0600676 - 10/7/2021 ERM 1050 SW 6th Avenue Suite 1650 Portland, OR 97204 Telephone: (503) 488-5282 Fax: (503) 488-5124 www.erm.com Page 1 of 3 © Copyright 2022 by ERM Worldwide Group Limited and/or its affiliates (‘ERM’). All Rights Reserved. No part of this work may be reproduced or transmitted in any form or by any means, without prior written permission of ERM. Memorandum To Justin Dauphinais From Jack James Date 21 June 2022 Reference 0600676 Subject Data Review of L3Harris Technologies, Inc. Second Quarter 2022 Groundwater Samples, May 2022: Eurofins TestAmerica Data Packages 280-162142-1, 280-162228-1, 280-162293-1 Rev(1), and 280-162353-1. The data quality was assessed and any necessary qualifiers were applied following the USEPA National Functional Guidelines for Organic Superfund Methods Data Review, November 2020, the USEPA National Functional Guidelines for Inorganic Superfund Methods Data Review, November 2020, and the Groundwater Monitoring and Vapor Intrusion Assessment Work Plan, EDO Western Corporation Acoustic Sensors Facility, South Salt Lake City, Utah, August 2019. Field duplicates were assessed following Environmental Data Review Supplement for Region 1 Data Review Elements and Superfund Specific Guidance/Procedures, September 2020. CASE NARRATIVE COMMENTS The laboratory described that two volatile organic analysis vials were received broken for sample MW -9I from report 280-162293-1. The laboratory was able to complete the requested analyses from the remaining vials and qualifications were not necessary. HOLDING TIME AND PRESERVATION EVALUATION The sample shipments were received at the laboratory within the method-prescribed temperature preservation requirements of less than 6°C. The samples were prepared and analyzed within the method-prescribed time period from the date of collection, with one exception. Sample MW-14I was reanalyzed one day past the recommended hold time of 14 days for cis-1,2-dichloroethene due to the initial result being over the calibration range. The result was qualified as an estimate with no bias (J). The qualified result is presented in Table 1. BLANK EVALUATION The method and trip blank sample results were non-detected for each of the target analytes, with one exception. Total iron was detected in a method blank sample. However, total iron was not detected in the associated samples and qualifications were not necessary. The method blank detection is presented in Table 2. ERM 21 June 2022 Justin Dauphinais Page 2 of 3 INITIAL AND CONTINUING CALIBRATION VERIFICATION EVALUATION The case narratives for reports 280-162228-1, 280-162293-1, and 280-162353-1 described that initial and continuing calibration verification (ICV/CCV) sample percent differences, relative responses and/or recoveries were outside the control limits for several analytes. Qualifications were not necessary for high CCV recovery outliers when the associated results were not detected. Results associated with ICV/CCV percent difference outliers were quailed as estimates (UJ) for non- detects and as estimates with no bias (J) for detected results per National Functional Guidelines. The ICV/CCV outliers and qualified data are presented in Table 3. BLANK SPIKE EVALUATION The laboratory control sample (LCS)/laboratory control sample duplicate (LCSD) recoveries and relative percent differences (RPDs) were within the laboratory’s limits of acceptance. The LCS and LCSD recoveries and RPDs indicate acceptable laboratory accuracy and precision. MATRIX SPIKE EVALUATION The laboratory prepared several non-project samples for matrix spike (MS) and matrix spike duplicate (MSD) analysis. MS samples from non-project parent samples are not representative of the matrix for this project and were therefore not reviewed in this validation effort. The MS/MSD recoveries and RPDs were within laboratory limits of acceptance for samples prepared from project samples, with two exceptions. The MS/MSD recoveries for cis-1,2- dichloroethene prepared from sample MW -13 were below the laboratory control limits. cis-1,2- Dichloroethene was detected in the parent sample and the result was qualified as an estimate with a low bias. Additionally, the RPD for 1,4-dioxane by 8260D SIM was greater than the laboratory control limit for this sample. The detected result was qualified as an estimate with no bias. The outliers and qualified data can be found in Table 4. SURROGATE SPIKE EVALUATION The surrogate recoveries were within acceptable limits. No qualifications were required based on surrogate recoveries. The surrogate recoveries indicate minimal matrix interference in the samples. FIELD DUPLICATE EVALUATION Two samples were submitted in duplicate. ERM calculated the differences or RPDs between detected results in Table 5. An RPD control limit of 30 was used for aqueous samples when both the sample and the field duplicate results were greater than or equal to five times the reporting limit. A control limit of ± two times the reporting limit for the calculated differences was used when at least one of the results was less than five times the reporting limit. All calculated RPDs and differences were within the control limits, indicating acceptable field precision. ERM 21 June 2022 Justin Dauphinais Page 3 of 3 OVERALL ASSESSMENT No results were rejected. All of the data, including qualified data, can be used for decision-making purposes; however, the limitations indicated by the applied qualifiers should be considered when using the data. The quality of the data generated during this investigation is acceptable for the preparation of technically defensible documents. Table 1 Samples with Exceeded Holding Times May 2022 Groundwater Samples L3Harris Technologies, Inc South Salt Lake City, Utah Lab Package Sample ID Method Analysis Holding Time Time Exceeded Affected Analyte ERM Qualifier 280-162293-1 MW-14I 8260D 14 days 1 day cis-1,2-Dichloroethene J Lab packages reviewed: 280-162142-1, 280-162228-1, 280-162293-1 Rev(1), and 280-162353-1 Notes: J = Estimated detected result ERM Page 1 of 11 PN0600676 - 6/21/2022 Table 2 Blank and Associated Suspect Sample Detections May 2022 Groundwater Samples L3Harris Technologies, Inc South Salt Lake City, Utah Lab Package Blank ID Associated Sample Detected Analyte Reported Blank Concentration Blank Report Limit Associated Sample Result Associated Sample Report Limit Units ERM Qualifier 280-162293-1 MB 280-575456/1-C None for qualification Total Iron 51.3 100 ----μg/L -- Lab packages reviewed: 280-162142-1, 280-162228-1, 280-162293-1 Rev(1), and 280-162353-1 Notes: MB = Method blank μg/L = Micrograms per liter ERM Page 2 of 11 PN0600676 - 6/21/2022 Table 3 Calibration Verification Recoveries Outside of Acceptable Limits May 2022 Groundwater Samples L3Harris Technologies, Inc South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier B-1 ND μg/L UJ B-3 ND μg/L UJ MW-15 ND μg/L UJ MW-15-C ND μg/L UJ MW-15I ND μg/L UJ MW-20I ND μg/L UJ MW-2A ND μg/L UJ MW-2I ND μg/L UJ MW-3 ND μg/L UJ MW-3I ND μg/L UJ MW-7 ND μg/L UJ MW-7I ND μg/L UJ MW-8 ND μg/L UJ MW-8-A ND μg/L UJ B-1 ND μg/L UJ B-3 ND μg/L UJ MW-15 ND μg/L UJ MW-15-C ND μg/L UJ MW-15I ND μg/L UJ MW-20I ND μg/L UJ MW-2A ND μg/L UJ MW-2I ND μg/L UJ MW-3 ND μg/L UJ MW-3I ND μg/L UJ 280-162228-1 Chloromethane 21.8 %D CCV in batch 280-575885 20 %D 1,4-Dioxane -24.8 %D 20 %D ERM Page 3 of 11 PN0600676 - 6/21/2022 Table 3 Calibration Verification Recoveries Outside of Acceptable Limits May 2022 Groundwater Samples L3Harris Technologies, Inc South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-7 ND μg/L UJ MW-7I ND μg/L UJ MW-8 ND μg/L UJ MW-8-A ND μg/L UJ B-1 ND μg/L UJ B-3 ND μg/L UJ MW-15 ND μg/L UJ MW-15-C ND μg/L UJ MW-15I ND μg/L UJ MW-20I ND μg/L UJ MW-2A ND μg/L UJ MW-2I ND μg/L UJ MW-3 ND μg/L UJ MW-3I ND μg/L UJ MW-7 ND μg/L UJ MW-7I ND μg/L UJ MW-8 ND μg/L UJ MW-8-A ND μg/L UJ B-1 ND μg/L UJ B-3 ND μg/L UJ MW-15 ND μg/L UJ MW-15-C ND μg/L UJ MW-15I ND μg/L UJ MW-20I ND μg/L UJ MW-2A ND μg/L UJ MW-2I ND μg/L UJ MW-3 ND μg/L UJ MW-3I ND μg/L UJ MW-7 ND μg/L UJ MW-7I ND μg/L UJ MW-8 ND μg/L UJ MW-8-A ND μg/L UJ -27.1 %D 20 %D 20 %D33.5 %DBromomethane 20 %D-24.8 %D1,4-Dioxane 1,2-Dibromo-3- chloropropane 280-162228-1 ICV for batch 280- 575885 CCV in batch 280-575885 ERM Page 4 of 11 PN0600676 - 6/21/2022 Table 3 Calibration Verification Recoveries Outside of Acceptable Limits May 2022 Groundwater Samples L3Harris Technologies, Inc South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-13 ND μg/L UJ MW-13I ND μg/L UJ MW-14 ND μg/L UJ MW-14I ND μg/L UJ MW-16 ND μg/L UJ MW-16-C ND μg/L UJ MW-18I ND μg/L UJ MW-18I-A ND μg/L UJ MW-19I ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-13 ND μg/L UJ MW-13I ND μg/L UJ MW-14 ND μg/L UJ MW-14I ND μg/L UJ MW-16 ND μg/L UJ MW-16-C ND μg/L UJ MW-18I ND μg/L UJ MW-18I-A ND μg/L UJ MW-19I ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-13 ND μg/L UJ MW-13I ND μg/L UJ MW-14 ND μg/L UJ MW-14I ND μg/L UJ 20 %DOut 1,4-Dioxane 1,2,3-Trichlorobenzene 20 %DOut1,2-Dibromo-3- Chloropropane CCV in batch 280-576078280-162293-1 Out 20 %D ERM Page 5 of 11 PN0600676 - 6/21/2022 Table 3 Calibration Verification Recoveries Outside of Acceptable Limits May 2022 Groundwater Samples L3Harris Technologies, Inc South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-16 ND μg/L UJ MW-16-C ND μg/L UJ MW-18I ND μg/L UJ MW-18I-A ND μg/L UJ MW-19I 39.7 μg/L J MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-13 ND μg/L UJ MW-13I ND μg/L UJ MW-14 ND μg/L UJ MW-14I ND μg/L UJ MW-16 ND μg/L UJ MW-16-C ND μg/L UJ MW-18I ND μg/L UJ MW-18I-A ND μg/L UJ MW-19I ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-13 ND μg/L UJ MW-13I ND μg/L UJ MW-14 ND μg/L UJ MW-14I ND μg/L UJ MW-16 ND μg/L UJ MW-16-C ND μg/L UJ MW-18I ND μg/L UJ 280-162293-1 1,4-Dioxane CCV in batch 280-576078 20 %DOut 20 %DOutMethyl acetate 20 %DOutAcetone ERM Page 6 of 11 PN0600676 - 6/21/2022 Table 3 Calibration Verification Recoveries Outside of Acceptable Limits May 2022 Groundwater Samples L3Harris Technologies, Inc South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-18I-A ND μg/L UJ MW-19I ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-13 ND μg/L UJ MW-13I ND μg/L UJ MW-14 ND μg/L UJ MW-14I ND μg/L UJ MW-16 ND μg/L UJ MW-16-C ND μg/L UJ MW-18I ND μg/L UJ MW-18I-A ND μg/L UJ MW-19I ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-13 ND μg/L UJ MW-13I 4.52 μg/L J MW-14 ND μg/L UJ MW-14I 5.48 μg/L J MW-16 ND μg/L UJ MW-16-C ND μg/L UJ MW-18I ND μg/L UJ MW-18I-A ND μg/L UJ MW-19I 7.42 μg/L J MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ 20 %DOut NR1,2,4-Trichlorobenzene Low Low1,2-Dichloroethane CCV in batch 280-576078 NR 280-162293-1 Methyl acetate ERM Page 7 of 11 PN0600676 - 6/21/2022 Table 3 Calibration Verification Recoveries Outside of Acceptable Limits May 2022 Groundwater Samples L3Harris Technologies, Inc South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier MW-6I ND μg/L UJ MW-9 ND μg/L UJ MW-9I 26.0 μg/L J MW-13 ND μg/L UJ MW-13I ND μg/L UJ MW-14 ND μg/L UJ MW-14I ND μg/L UJ MW-16 ND μg/L UJ MW-16-C ND μg/L UJ MW-18I ND μg/L UJ MW-18I-A ND μg/L UJ MW-19I ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ MW-13 ND μg/L UJ MW-13I ND μg/L UJ MW-14 ND μg/L UJ MW-14I ND μg/L UJ MW-16 ND μg/L UJ MW-16-C ND μg/L UJ MW-18I ND μg/L UJ MW-18I-A ND μg/L UJ MW-19I ND μg/L UJ MW-4 ND μg/L UJ MW-4I ND μg/L UJ MW-6 ND μg/L UJ MW-6I ND μg/L UJ MW-9 ND μg/L UJ MW-9I ND μg/L UJ CCV in batch 280-576078280-162293-1 NR1,2-Dichloroethane Low Chlorobromomethane Low NR Low NRChloromethane ERM Page 8 of 11 PN0600676 - 6/21/2022 Table 3 Calibration Verification Recoveries Outside of Acceptable Limits May 2022 Groundwater Samples L3Harris Technologies, Inc South Salt Lake City, Utah Lab Package CCV Sample ID Analyte CCV Result CCV Limits Associated Sample Reported Concentration Units ERM Qualifier 280-162353-1 CCV in batch 280-576171 Numerous High NR None for qualification Per lab, associated results are ND ------ Lab packages reviewed: 280-162142-1, 280-162228-1, 280-162293-1 Rev(1), and 280-162353-1 Notes: CCV = Continuing calibration verification High = Recovery above maximum acceptable limit J = Estimated detected result Low = Recovery below minimum acceptable limit ND = Not detected NR = Not reported Out = Result was outside of control limits μg/L = Micrograms per liter UJ = Nondetected, estimated report limit ERM Page 9 of 11 PN0600676 - 6/21/2022 Table 4 Spike Recoveries Outside of Acceptable Limits May 2022 Groundwater Samples L3Harris Technologies, Inc South Salt Lake City, Utah Lab Package Spike Sample ID Associated Sample Analyte Recovery (%)Limit (%)RPD RPD Limit Result Units ERM Qualifier cis-1,2-Dichloroethene 57/47 69-126 3 20 84.5 μg/L J- 1,4-Dioxane (SIM)108/76 25-141 34 20 0.597 μg/L J Notes: J = Estimated detected result J- = Estimated detected result with a low bias MS/MSD = Matrix spike/matrix spike duplicate NR = Not reported RPD = Relative percent difference μg/L = Micrograms per liter Lab packages reviewed: 280-162142-1, 280-162228-1, 280-162293-1 Rev(1), and 280-162353-1 MS/MSD MW-13MS MW-13 MSD MW-13280-162293-1 ERM Page 10 of 11 PN0600676 - 6/21/2022 Table 5 Field Duplicate Results and Calculated Relative Percent Differences May 2022 Groundwater Samples L3Harris Technologies, Inc South Salt Lake City, Utah Lab Package Primary/Duplicate Sample ID Analyte Sample Duplicate Sample Duplicate Difference Difference Limit Units RPD RPD Limit ERM Qualifier 1,1-Dichloroethane 14.7 14.6 1.00 1.00 --NA ug/L 0.68 30 -- 1,1-Dichloroethene 3.97 3.97 1.00 1.00 0.00 2.00 ug/L --NA -- 1,2-Dichloroethane 1.97 2.00 1.00 1.00 0.03 2.00 ug/L --NA -- cis-1,2-Dichloroethene 59.2 60.2 1.00 1.00 --NA ug/L 1.7 30 -- Trichloroethene 7.75 7.96 1.00 1.00 --NA ug/L 2.7 30 -- Vinyl chloride 4.44 4.35 1.00 1.00 0.09 2.00 ug/L --NA -- 1,4-Dioxane 1.58 1.57 1.40 1.40 0.01 2.80 ug/L --NA -- 1,1-Dichloroethane 9.92 10.6 1.00 1.00 --NA ug/L 6.6 30 -- 1,1-Dichloroethene 4.53 4.56 1.00 1.00 0.03 2.00 ug/L --NA -- cis-1,2-Dichloroethene 6.88 6.94 1.00 1.00 --NA ug/L 0.87 30 -- Trichloroethene 1.37 1.28 1.00 1.00 0.09 2.00 ug/L --NA -- Vinyl chloride 3.48 3.36 1.00 1.00 0.12 2.00 ug/L --NA -- 1,4-Dioxane 6.12 6.07 1.40 1.40 0.05 2.80 ug/L --NA -- Notes: NA = Not applicable RPD = Relative percent difference μg/L = Micrograms per liter Lab packages reviewed: 280-162142-1, 280-162228-1, 280-162293-1 Rev(1), and 280-162353-1 Concentration Report Limit MW-8 MW-8-A280-162228-1 MW-18I MW-18I-A280-162293-1 ERM Page 11 of 11 PN0600676 - 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