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HomeMy WebLinkAboutPRLF730_20240411_RI-4_RI Report REMEDIAL INVESTIGATION GROUNDWATER MONITORING AND LANDFILL GAS MONITORING ELON COLLEGE LDFL Elon, Alamance County, North Carolina State Contract N17012 Task Order: 730RI-4 Site ID – NONCD0000730 Prepared for: North Carolina Department of Environmental Quality Division of Waste Management, Superfund Section Special Remediation Branch Pre-Regulatory Landfill Unit 1646 Mail Service Center Raleigh, NC 27699-1646 Prepared by: ATC Associates of North Carolina, P.C. 2725 East Millbrook Road, Suite 121 Raleigh, NC 27604 Phone: (919) 871-0999 Fax: (737) 207-8261 April 11, 2024 Prepared By: Reviewed By: Laura I. de Sousa Staff Scientist Timothy D. Grant, P.G. Senior Project Manager Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W Pre-Regulatory Landfill Unit TABLE OF CONTENTS 1.0 INTRODUCTION .................................................................................................................. 1 2.0 GROUNDWATER MONITORING ...................................................................................... 1 2.1 GROUNDWATER SAMPLING AND RESULTS ................................................... 1 3.0 LANDFILL GAS PROBE MONITORING .......................................................................... 2 3.1 LANDFILL GAS PROBE SAMPLING .................................................................... 2 3.2 LANDFILL GAS PROBE SCREENING ................................................................. 2 4.0 QUALITY CONTROL ........................................................................................................... 3 5.0 SOLE USE STATEMENT .................................................................................................... 3 TABLES Table 1 – Sample Coordinates Table 2 – Monitoring Well Construction and Groundwater Elevation Data Table 3 – Field Parameter Data Table 4 – Groundwater Investigation – Analytical Data Table 5 – Soil Gas and Landfill Gas Probe Construction Details Table 6 – Landfill Gas Investigation – Analytical Data Table 7 – Landfill Gas Probe Screening FIGURES Figure 1 – Site Map Figure 2 – Groundwater Investigation Figure 3A – Landfill Gas Investigation Figure 3B – Landfill Gas Investigation APPENDICES Appendix A – Field Notes and Calibration Documents Appendix B – Photolog Appendix C – Laboratory Analytical Report – Groundwater Appendix D – Risk Calculators - Groundwater Appendix E - Laboratory Analytical Report – Landfill Gas Appendix F - Risk Calculators – Landfill Gas Appendix G – Certification Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W 1 Pre-Regulatory Landfill Unit 1.0 INTRODUCTION ATC Associates of North Carolina (ATC) has completed the Remedial Investigation Groundwater Monitoring and Landfill Gas Monitoring Report for sampling activities at Elon College LDFL (NONCD0000730) located in Elon, Alamance County, North Carolina. The scope of work includes the tasks outlined in the Work Plan for Task Orders 730RI-3 and 730RI-4 prepared by ATC and dated December 8, 2023 and approved by the Pre-Regulatory Landfill Unit (“the Unit”) staff on January 23, 2024. ATC performed the field activities at the site from February 19 through February 21, 2024, which included the following tasks:  Groundwater samples collected from seven existing monitoring wells (MW-01 through MW-07) and analyzed for the following: o Volatile Organic Compounds (VOCs) by SW-846 Method 8260 o 1,4-Dioxane by SW-846 Method 8270SIM o Semi-Volatile Organic Compounds (SVOCs) by SW-846 Method 8270 o Inorganic hazardous substances by SW-846 Method 6020 (antimony, arsenic, barium, beryllium, cadmium, chromium, cobalt, copper, lead, manganese, nickel, selenium, silver, thallium, vanadium, and zinc)  Sample collection from landfill gas probes (LFGP-1 and LFGP-2), and six permanent soil gas probes (SGP-6, SGP-8, SGP-10 and SGP-11). The probes were also screened using field instrumentation. Samples collected from the landfill gas probes and the soil gas probes were analyzed for the following: o VOCs by Method TO-15 o Hydrogen Sulfide by Method 15/ASTM D5504 o Methane by ASTM D1946 A site map is included in Figure 1. The global positioning satellite (GPS) coordinates of the monitoring wells, and landfill gas probes are included in Table 1. Field notes, sampling logs, and calibration documents for all phases of site activities are included in Appendix A. Site photographs are included in Appendix B. 2.0 GROUNDWATER MONITORING 2.1 GROUNDWATER SAMPLING AND RESULTS ATC gauged groundwater depth at all the monitoring wells and collected samples from each well (MW-01 through MW-07). Depth to groundwater ranged from 2.90 feet bgs (MW-02) to 25.88 feet bgs (MW-5). Monitoring well construction and depth to groundwater information is summarized on Table 2. A groundwater contour map is provided as Figure 2. Groundwater flow direction is to the south towards Travis creek. Groundwater samples were collected from monitoring wells MW-01 through MW-07. Purging was performed using a peristaltic pump and Teflon® tubing. Purging and sampling were performed by low-flow methodology on all wells. A Hanna 98194 water quality meter and flow-through cell were used to monitor temperature, specific conductivity, pH, and dissolved oxygen (DO) during purging. A Geotech Turbidity Meter was used to measure turbidity. Prior to conducting the groundwater sampling, ATC calibrated the water quality meters per the specifications to insure proper calibration. Calibration procedures were documented in the field as well as information detailing the equipment manufacturer, model number, serial number, set up parameters, measurement units, and types of calibration gas or fluid used during calibration. The water quality parameters recorded immediately prior to sampling indicated adequate stabilization. Field parameter data is included in Table 3. The samples were placed in laboratory-provided containers, properly Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W 2 Pre-Regulatory Landfill Unit labeled, and stored on ice pending delivery to Pace Analytical Services (Pace), a North Carolina accredited laboratory for analysis by the methods discussed above. The analytical data is summarized in Table 4. Cumulative Carcinogenic Risk and Non-Carcinogenic Hazard Index values were calculated for all of the recent groundwater samples and historical groundwater samples using the NCDEQ DWM Risk Calculator (version February 2024). Groundwater use and groundwater to indoor air exposure pathways were considered for both residential and non-residential worker land use scenarios. Risk was calculated for individual sample data and considered only the compounds targeted and detected as described herein. No modifications to the default parameter values and equations inherent to the NCDEQ DWM Risk Calculator were made. As specified in N.C.G.S. 130A-310.68, residential and non-residential cumulative risk is acceptable when the carcinogenic risk is less than 1.0E-04 and the hazard index for systemic toxicants is less than 1.0. No values exceeded either residential or non-residential. The calculated risk at each monitoring well is shown on Figure 2 and on Table 4. The laboratory report is included in Appendix C. Risk calculator output is provided in Appendix D. 3.0 LANDFILL GAS PROBE MONITORING 3.1 LANDFILL GAS PROBE SAMPLING ATC collected samples from landfill gas probes LFGP-1 and LFGP-2 and from soil-gas probe SGP-6, SGP- 8, SGP-10, and SGP-11. Landfill gas probe locations are shown on Figure 3A and 3B. Soil-gas probes SGP-7 and SGP-9 were scheduled to be sampled, however, due to shallow groundwater, a sample was unable to be collected during this sampling event. To confirm the integrity of the sampling process line, a shut-in test was conducted by applying vacuum pressure to the lines and observing for vacuum loss at each of the sample locations. The preliminary air samples were screened with the field helium meter to ensure that less than 10 percent of the helium concentrations observed within the shroud existed in the preliminary sir sample. Samples were collected for VOC and methane analysis in batch certified stainless-steel Summa canisters and submitted to Eurofins Air Toxics LLC in Folsom, California for analysis by the methods described above. Hydrogen sulfide samples were collected in Tedlar bags. The Tedlar bags were packaged and shipped daily to Air Technology Laboratories LLC, in City of Industry, California. The laboratory analytical reports are included in Appendix E. The landfill gas probe analytical data is summarized on Table 6 and are depicted on Figure 3A. Cumulative Carcinogenic Risk and Non-Carcinogenic Hazard Index values were calculated for all of the landfill gas samples using the NCDEQ DWM Risk Calculator (version July 2023). Only the soil gas to indoor air exposure pathway was considered for both residential and non-residential worker land use scenarios. Risk was calculated for individual sample data and considered only the compounds targeted and detected as described herein. No modifications to the default parameter values and equations inherent to the NCDEQ DWM Risk Calculator were made. As specified in N.C.G.S. 130A-310.68, residential and non- residential cumulative risk is acceptable when the carcinogenic risk is less than 1.0E-04 and the hazard index for systemic toxicants is less than 1.0. No values exceeded either residential or non-residential. The calculated risk at each landfill gas probe is shown on Figure 3B. Risk calculator output is provided in Appendix F. 3.2 LANDFILL GAS PROBE SCREENING After the samples had been collected, ATC screened landfill gas probes LFGP-1 and LFGP-2 and soil gas probes SGP-8, SGP-10 and SGP-11. Although ATC was able to collect a sample from SGP-6, water had entered the sampling line before the screening process. SGP-7 and SGP-9 were also not included in the screening due to water in the sampling line. Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W 3 Pre-Regulatory Landfill Unit To perform the testing, ATC used a GEM 5000+ (GEM), MiniRAE 3000, and manometer to measure target landfill gases and other parameters by connecting directly to the Teflon® tubing in each of the soil gas probes. Soil gas probes gas measurements collected from each location included methane, oxygen, carbon dioxide, temperature, humidity, barometric pressure, hydrogen sulfide, and VOCs. A manometer was also used to measure differential pressure. Prior to conducting the landfill gas survey, ATC calibrated each instrument in the field per the manufacturer’s specifications and conducted bump tests before, periodically during, and after the landfill gas survey to insure proper calibration. Calibration procedures were documented in the field as well as information detailing the equipment manufacturer, model number, serial number, date of factory calibration and maintenance, set up parameters, measurement units, detection limits, and types of calibration gas and their expiration dates. In addition, field logs were kept that included the name of the person conducting the evaluation, a description of weather conditions, and alternate forms of cross-contamination, as well as hourly ambient temperature, humidity, and barometric pressure readings. The landfill gas probe screening data is summarized in Table 7. The landfill gas probe screening is also presented in Figure 3B as comparison between the laboratory results and the screening data. 4.0 QUALITY CONTROL The following quality control samples were collected:  Duplicate samples– Duplicate samples were collected from all media which included: groundwater (MW-02), and soil gas (LFGP-2). Both the parent and duplicate readings depicted similar concentrations for all samples.  Equipment blanks- Equipment blanks (Equipment-Blank-1) was collected by running deionized water through clean Teflon® tubing directly into sample containers. Barium, manganese, zinc, and 2-butanone were detected in Equipment-Blank -1 at concentrations above the method detection limit (MDL), but below the laboratory reported detection limit (RDL). 2-butanone was not detected within the groundwater samples and is considered to not be associated with the groundwater sample results. Barium, manganese, and zinc were detected in the groundwater samples for multiple wells. The resulting concentrations in the equipment blank constituents are low and therefore are not considered to impact the groundwater results. As part of ATC’s quality assurance measures, a data review of the laboratory reports was conducted. During the review, it was found that the samples were received from the laboratory in acceptable condition and properly preserved. All samples were analyzed within correct holding times and reported within the lab report, and the chain of custody was properly completed by all parties. The laboratory method blank for laboratory report L1707788 dated April 5, 2024, did not detect any compounds above the MDL. Targeted compounds detected in the duplicate samples were within range for relative percent difference (RPD). Refer to the laboratory reports in Appendices C and E for details regarding QC results for the laboratory samples and any noted exceptions. 5.0 SOLE USE STATEMENT This report, in accordance with the North Carolina Department of Environmental Quality Unit’s January 23, 2024, approvals referencing Task Order 730RI-3 and 730RI-4, is intended solely for the use of the Unit. The report certification as specified in the Inactive Hazardous Sites Program, Guidelines for Addressing Pre-Regulatory Landfills & Dumps, March 2022 for Task Order 730RI-3 and 730RI-4 is provided in Appendix G. Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W Pre-Regulatory Landfill Unit TABLES Table 1 SAMPLE COORIDNATES ELON COLLEGE LDFL NONCD0000730 ELON, ALAMANCE COUNTY, NORTH CAROLINA ID Latitude Longitude Northing Easting MW-01 36.12768334 -79.51755051 1847151.829 865777.602 MW-02 36.12624860 -79.51856381 1846849.843 865256.882 MW-03 36.12541799 -79.51756368 1847143.638 864952.967 MW-04 36.12644737 -79.51733072 1847214.391 865327.341 MW-05 36.12639713 -79.51636281 1847500.151 865307.561 MW-06 36.12517279 -79.51734643 1847207.335 864863.370 MW-07 36.12660303 -79.51859863 1846840.235 865385.961 SGP-6 36.12707339 -79.51739440 1847196.773 865555.334 SGP-7 36.12783434 -79.51782014 1847072.483 865833.002 SGP-8 36.12635475 -79.51675199 1847385.133 865292.734 SGP-9 36.12577407 -79.51700454 1847309.445 865081.732 SGP-10 36.12538351 -79.51755801 1847145.247 864940.404 SGP-11 36.12663395 -79.51838986 1846901.948 865396.895 LFGP-1 36.12708967 -79.51771999 1847100.648 865561.761 LFGP-2 36.12590540 -79.51750622 1847161.532 865130.314 Notes: 1. GPS coordinates tied to the North Carolina State Plane Coordinate System (NAD83). Table 2 MONITORING WELL CONSTRUCTION AND GROUNDWATER ELEVATION DATA ELON COLLEGE LDFL NONCD0000730 ELON, ALAMANCE COUNTY, NORTH CAROLINA MW-01 1/4/2021 2/19/2024 2 20 3.1 5 - 20 121.13 7.37 113.76 MW-02 8/25/2023 2/19/2024 2 20 3.4 5 - 20 90.74 2.90 87.84 MW-03 8/25/2023 2/19/2024 2 20 3.5 5 - 20 96.54 12.44 84.10 MW-04 8/25/2023 2/19/2024 2 25 2.9 15 - 25 114.04 15.96 98.08 MW-05 8/25/2023 2/19/2024 2 37 2.9 25 - 37 116.79 25.88 90.91 MW-06 8/25/2023 2/19/2024 2 20 3.0 8 - 20 92.85 12.46 80.39 MW-07 8/25/2023 2/19/2024 2 15 3.2 5 - 15 98.14 8.81 89.33 Notes: 1) btoc = below top of casing. 2) bgs = below ground surface. 3) Elevations surveyed to arbitrary on-site benchmark (TP-1) of 100.00 feet . 4) ags = above ground surface. Screen Interval (feet bgs) Top of Casing Elevation (feet ags) Depth to Water (feet btoc) Groundwater Elevation (feet btoc) Monitoring Well ID Date Installed Date Measured Well Casing Diameter (inches) Total Well Depth (feet btoc) PVC Casing Stick-Up Length (feett ags) Table 3 FIELD PARAMETER DATA ELON COLLEGE LDFL NONCD0000730 ELON, ALAMANCE COUNTY, NORTH CAROLINA PARAMETER MW-01 MW-02 MW-03 MW-04 MW-05 MW-06 MW-07 Date Measured 2/19/2024 2/19/2024 2/19/2024 2/19/2024 2/19/2024 2/19/2024 2/19/2024 Time 17:45 16:17 11:17 12:24 13:44 10:35 17:03 Temperature (°C)12.21 12.81 15.97 15.83 16.07 11.61 11.32 pH 4.82 4.57 5.66 4.46 4.46 5.33 4.57 Dissolved Oxygen (mg/L)5.15 1.12 3.42 4.91 3.82 2.12 1.22 Specific Conductivity (µS/cm)155 164 325 60 82 210 198 Pre-decanted Turbidity (NTUs) 5.01 11.9 10.0 1.20 1.53 0.80 7.79 Notes: 1) °C = Degrees Celsius. 2) mV = milliVolts. 3) µS/cm = Microsiemens per Centimeter. 4) mg/L = Milligrams per Liter. 5) NTUs = Nephelometric Turbidity Units. Table 4 GROUNDWATER INVESTIGATION - ANALYTICAL DATA ELON COLLEGE LDFL NONCD0000730 ELON, ALAMANCE COUNTY, NORTH CAROLINA 1/6/2021 1/6/2021*8/29/2023 2/19/2024 8/29/2023 8/29/2023*2/19/2024 2/19/2024*8/28/2023 2/19/2024 10 0.188 J 0.180 J 0.248 J BDL BDL BDL BDL BDL 0.191 J BDL 700 BDL BDL 11.6 15.1 49.5 50.1 33.2 34.0 80.6 94.8 2 BDL BDL 0.156 J BDL BDL BDL BDL BDL BDL BDL 10 1.47 J 1.54 J 2.59 2.12 BDL BDL BDL BDL BDL BDL 1 BDL BDL 0.788 J 0.718 J 0.986 J 1.01 0.556 J 0.525 J 1.14 J 0.316 J 1,000 1.54 J 1.64 J BDL BDL BDL BDL BDL BDL BDL BDL 300 306 553 NA NA NA NA NA NA NA NA 50 253 253 29.5 20.2 152 86.8 65.1 64.8 86.8 24.8 100 3.42 3.33 1.22 J 1.04 J 3.47 2.59 1.06 J 1.11 J 2.59 BDL 2 BDL BDL 0.214 J BDL BDL BDL BDL BDL BDL BDL 7 BDL BDL 7.48 5.78 1.57 J 1.60 J 1.10 J 1.13 J 1.60 J 1.37 J 1,000 BDL BDL BDL 3.47 J 3.30 J 3.21 J BDL BDL 3.21 J BDL EPA Method 7470A 1 BDL BDL BDL NA BDL BDL NA NA BDL NA 70 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 600 0.292 J BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 NA NA 0.0585 J BDL BDL 0.205 J 0.0660 J BDL BDL 0.117 J 80 BDL BDL BDL BDL BDL BDL 0.0925 J BDL BDL BDL 6 BDL BDL BDL BDL BDL BDL 2.24 BDL 0.191 BDL NE BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 BDL BDL BDL BDL BDL 0.484 J BDL BDL BDL BDL 3.6E-06 3.5E-06 4.9E-06 6.1E-05 0.0E+00 4.5E-07 1.9E-05 0.0E+00 5.3E-06 2.5E-07 0.15 0.17 1.4 0.29 0.26 0.27 0.64 0.26 0.33 0.15 7.3E-07 7.0E-07 9.9E-07 6.1E-06 0.0E+00 9.4E-08 5.1E-06 0.0E+00 1.2E-06 5.4E-08 0.022 0.024 0.21 0.051 0.038 0.040 0.13 0.044 0.052 0.026 0.0E+00 0.0E+00 2.0E-11 0.0E+00 0.0E+00 7.2E-11 4.9E-07 0.0E+00 4.2E-08 4.1E-11 0.000015 0.0 0.00000037 0.0 0.0 0.0000013 0.013 0.0 0.0011 0.00000073 0.0E+00 0.0E+00 4.7E-12 0.0E+00 0.0E+00 1.6E-11 1.1E-07 0.0E+00 9.5E-09 9.4E-12 0.0000036 0.0 0.000000087 0.0 0.0 0.00000031 0.0031 0.0 0.00026 0.00000017 1) Concentrations are reported in micrograms per liter (μg/L). 2) VOCs = Volatile Organic Compounds. 3) SVOCs = Semi-Volatile Organic Compounds. 4) BDL = Below Detection Limit. 5) J = Result is lower than the reporting limit, but greater than the method detection limit; the associated concentration is an approximate value. 6) * = duplicate sample. 7) Carginogenic Risk and/or Non-Carcinogenic Hazard Quotients in BOLD exceed acceptable levels of 1.0E-04 (carcinogens) or 1.0 (noncarcinogens). 8) NE = Not Established. 9) Concentrations in BOLD equal or exceed the 15A NCAC 2L 0.0202 Groundwater Quality Standard (2L Standard) - April 2022. 10) NA = Not Analyzed. MW-03MW-02 Metals by EPA Method 6020B VOCs by EPA Method 8260D/8260B Toluene Copper Iron Thallium Mercury MW-01 Method Parameter 2L Standards (µg/L) Chromium (total) Arsenic Barium Cadmium 1,4-Dioxane Fluoranthene NaphthaleneSVOCs by EPA Method 8270E/8270D Cobalt Chloroform Zinc Vanadium Manganese Nickel Nitrobenzene Bis(2-ethylhexyl)phthalate Di-n-butyl phthalate Acenaphthene Notes: Non-Residential Worker Groundwater Use Vapor Intrustion Resident Groundwater to Indoor Air Non-Residential Worker Groundwater to Indoor Air NCDEQ Risk Calculator Values Direct Contact Resident Groundwater Use Cumulative Carcinogenic Risk Non-carcinogenic Hazard Quotient Cumulative Carcinogenic Risk Non-carcinogenic Hazard Quotient Cumulative Carcinogenic Risk Non-carcinogenic Hazard Quotient Cumulative Carcinogenic Risk Non-carcinogenic Hazard Quotient Table 4 GROUNDWATER INVESTIGATION - ANALYTICAL DATA ELON COLLEGE LDFL NONCD0000730 ELON, ALAMANCE COUNTY, NORTH CAROLINA 10 700 2 10 1 1,000 300 50 100 2 7 1,000 EPA Method 7470A 1 70 600 3 80 6 NE 3 700 3 1) Concentrations are reported in micrograms per liter (μg/L). 2) VOCs = Volatile Organic Compounds. 3) SVOCs = Semi-Volatile Organic Compounds. 4) BDL = Below Detection Limit. 5) J = Result is lower than the reporting limit, but greater than the method detection limit; the associated concentration is an approximate value. 6) * = duplicate sample. 7) Carginogenic Risk and/or Non-Carcinogenic Hazard Quotients in BOLD exceed acceptable levels of 1.0E-04 (carcinogens) or 1.0 (noncarcinogens). 8) NE = Not Established. 9) Concentrations in BOLD equal or exceed the 15A NCAC 2L 0.0202 Groundwater Quality Standard (2L Standard) - April 2022. 10) NA = Not Analyzed. Metals by EPA Method 6020B VOCs by EPA Method 8260D/8260B Toluene Copper Iron Thallium Mercury Method Parameter 2L Standards (µg/L) Chromium (total) Arsenic Barium Cadmium 1,4-Dioxane Fluoranthene NaphthaleneSVOCs by EPA Method 8270E/8270D Cobalt Chloroform Zinc Vanadium Manganese Nickel Nitrobenzene Bis(2-ethylhexyl)phthalate Di-n-butyl phthalate Acenaphthene Notes: Non-Residential Worker Groundwater Use Vapor Intrustion Resident Groundwater to Indoor Air Non-Residential Worker Groundwater to Indoor Air NCDEQ Risk Calculator Values Direct Contact Resident Groundwater Use Cumulative Carcinogenic Risk Non-carcinogenic Hazard Quotient Cumulative Carcinogenic Risk Non-carcinogenic Hazard Quotient Cumulative Carcinogenic Risk Non-carcinogenic Hazard Quotient Cumulative Carcinogenic Risk Non-carcinogenic Hazard Quotient 8/28/2023 2/19/2024 8/28/2023 2/19/2024 8/28/2023 8/28/2023*2/19/2024 8/29/2023 2/19/2024 BDL BDL BDL BDL BDL BDL BDL BDL BDL 17.1 15.3 13.8 14.3 32.6 32.2 23.2 42.8 35.7 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.36 J 1.99 J 2.07 BDL 1.79 J 0.342 J BDL 0.0782 J BDL BDL 0.112 J 0.362 J 0.169 J BDL BDL BDL BDL BDL BDL BDL BDL BDL NA NA NA NA NA NA NA NA NA 63.8 19.3 1.35 J 6.39 2.86 2.96 10.6 39.6 11.7 4.04 1.15 J 1.09 J 0.826 J 97.8 99.5 3.89 2.58 1.88 J BDL BDL BDL BDL BDL BDL BDL BDL BDl BDL BDL 1.02 J 1.57 J 2.02 J 2.44 J 3.45 J 3.41 J 2.92 J 6.34 J BDL BDL BDL 5.49 J BDL BDL 3.92 J BDL BDL NA BDL NA BDL BDL NA BDL NA BDL BDL 0.373 J 0.340 J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.244 J 0.0536 J 0.139 J 0.0574 J 0.101 J 0.132 J 0.0731 J 0.167 J 0.0958 J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.325 J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.45 J BDL BDL BDL BDL BDL BDL BDL BDL 1.26 J BDL BDL BDL BDL BDL 0.152 J BDL BDL 7.9E-07 1.2E-07 2.0E-06 1.7E-06 2.5E-06 2.9E-07 5.7E-05 3.6E-07 2.7E-07 0.35 0.11 0.025 0.056 0.59 0.58 0.15 0.14 0.11 1.6E-07 2.5E-08 4.5E-07 3.8E-07 5.8E-07 6.1E-08 5.8E-06 7.7E-08 4.4E-08 0.051 0.017 0.0048 0.010 0.088 0.085 0.028 0.022 0.018 8.5E-11 1.9E-11 4.6E-07 4.2E-07 4.6E-09 4.6E-11 2.6E-11 5.8E-11 3.3E-11 0.0000015 0.00000037 0.00055 0.00050 0.000035 0.00000083 0.00000046 0.0000010 0.00000060 2.0E-11 4.3E-12 1.0E-07 9.6E-08 1.0E-09 1.1E-11 5.8E-12 1.3E-11 7.7E-12 0.00000036 0.000000080 0.00013 0.00012 0.0000082 0.00000020 0.00000011 0.00000025 0.00000014 MW-04 MW-05 MW-07MW-06 Table 5 SOIL GAS AND LANDFILL GAS PROBE CONSTRUCTION DETAILS ELON COLLEGE LDFL NONCD0000730 ELON, ALAMANCE COUNTY, NORTH CAROLINA SGP-6 8/21/2023 0.250 9.5-10 10 SGP-7 8/24/2023 0.250 4.5-5 5 SGP-8 8/21/2023 0.250 9.5-10 10 SGP-9 8/21/2023 0.250 8.5-9 9 SGP-10 8/21/2023 0.250 9.5-10 10 SGP-11 8/24/2023 0.250 6.5-7 7 Landfill Gas Probe ID Date Installed Casing Diameter (inches) Screen Interval (feet bgs) Total Depth (feet bgs) LFGP-1 8/23/2023 1 5-10 10 LFGP-2 8/21/2023 1 5-10 10 Notes: 1) bgs = below ground surface. Screen Interval (feet bgs) Total Depth (feet bgs) Soil Gas Probe ID Date Installed Tubing Diameter (inches) TABLE 6 LANDFILL GAS INVESTIGATION - ANALYTICAL DATA ELON COLLEGE LDFL NONCD0000730 ELON, ALAMANCE COUNTY, NORTH CAROLINA 8/30/2023 08/30/2023*2/20/2024 8/30/2023 2/20/2024 2/20/2024*8/30/2023 2/20/2024 8/30/2023 2/20/2024 8/30/2023 2/20/2024 8/30/2023 2/20/2024 Acetone 32 40 BDL 1,100 BDL 28 BDL BDL 130 41 110 BDL 50 BDL Benzene BDL BDL BDL 680 5.7 9.2 5.4 BDL BDL BDL 17 BDL 6.9 BDL 1,3-Butadiene 2.8 2.5 BDL BDL BDL BDL BDL BDL BDL 18 BDL 30 2.8 27 Carbon Disulfide BDL BDL BDL BDL BDL BDL 57 BDL 35 BDL 340 BDL 250 BDL Chlorobenzene BDL BDL BDL 33 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL Chloroform BDL BDL BDL BDL BDL BDL BDL BDL 8.2 8.0 BDL BDL BDL BDL Cyclohexane 7.5 7.7 8.5 870 40 62 BDL BDL BDL BDL 12 8.6 14 5.0 1,4-Dichlorobenzene BDL BDL BDL 53 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL cis-1,2-Dichloroethene BDL BDL BDL 23 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL Ethylbenzene BDL BDL BDL 190 BDL BDL 39 BDL 7.4 BDL 79 BDL 82 BDL 4-Ethyltoluene BDL BDL BDL 290 9.1 10 23 BDL 9.4 BDL 81 BDL 85 BDL Trichlorofluoromethane BDL BDL BDL 52 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL Dichlorodifluoromethane (Freon 12)7.8 8.9 22 3,600 120 170 BDL BDL BDL BDL BDL BDL BDL BDL 1,2-Dichlorotetrafluoroethane (Freon 114)15 14 51 13,000 320 470 BDL BDL BDL BDL BDL BDL BDL BDL n-Heptane BDL BDL BDL 1,500 BDL 5.3 5.0 BDL BDL BDL 42 BDL 72 BDL n-Hexane 3.6 3.5 BDL 1,300 13 20 BDL BDL BDL BDL 21 BDL 26 BDL Isopropylbenzene (Cumene)BDL BDL BDL 360 21 23 BDL BDL BDL BDL 14 BDL 6.8 BDL n-Propylbenzene BDL BDL BDL 120 BDL BDL 5.9 BDL BDL BDL 36 BDL 22 BDL 2-Butanone (MEK)BDL BDL BDL BDL BDL BDL BDL BDL 12 BDL BDL BDL BDL BDL 2-Propanol BDL BDL BDL 120 BDL BDL BDL BDL BDL BDL 14 BDL BDL BDL Styrene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL Tetrachloroethene 31 32 16 230 BDL BDL 280 17 29 BDL 360 18 230 12 Toluene 9.2 9.2 BDL 210 BDL BDL 78 BDL 13 BDL 210 BDL 130 BDL 1,2,4-Trimethylbenzene BDL BDL BDL 240 BDL BDL 35 BDL 13 BDL 71 BDL 71 BDL 1,3,5-Trimethylbenzene BDL BDL BDL 180 BDL BDL 5.8 BDL BDL BDL 27 BDL 23 BDL 2,2,4-Trimethylpentane BDL BDL BDL 200 6.5 6.9 9.4 BDL BDL BDL 150 BDL 41 BDL Vinyl Chloride BDL BDL BDL 160 5.0 7.1 BDL BDL BDL BDL BDL BDL BDL BDL Total Xylenes BDL BDL BDL 580 10 16.7 147 BDL 25.6 BDL 306 BDL 254 BDL Hydrogen Sulfide by ASTM D-5504 BDL BDL BDL 450 BDL BDL BDL NA BDL BDL BDL BDL BDL BDL BDL BDL BDL 38 0.37 0.62 BDL BDL BDL BDL BDL BDL BDL BDL Cumulative Carcinogenic Risk 9.8E-07 8.9E-07 4.4E-08 9.7E-05 4.8E-07 7.7E-07 2.3E-06 4.7E-08 2.3E-06 2.0E-06 4.5E-06 5.8E-08 4.3E-06 3.3E-08 Non-carcinogenic Hazard Quotient 0.065 0.062 0.018 9.0 0.048 0.069 0.27 0.012 0.039 0.0031 0.44 0.014 0.35 0.0098 Cumulative Carcinogenic Risk 7.5E-08 6.8E-08 3.4E-09 5.8E-06 3.6E-08 5.9E-08 1.7E-07 3.6E-09 1.8E-07 1.5E-07 3.5E-07 3.8E-09 3.3E-07 2.5E-09 Non-carcinogenic Hazard Quotient 0.0052 0.0049 0.0014 0.71 0.0038 0.0055 0.022 0.00097 0.0031 0.00025 0.035 0.0011 0.028 0.00077 Notes: 1) Values reported in µg/m3 (Micrograms per Cubic Meter of Air) - with the exception of methane which is reported in percent by volume. 2) BDL = Below Detection Limit. 3) * = duplicate sample. 4) Carginogenic Risk and/or Non-Carcinogenic Hazard Quotients in BOLD exceed acceptable levels of 1.0E-04 (carcinogens) or 1.0 (noncarcinogens). 5) VOCs = Volatile Organic Compounds. ParameterMethod LFGP-1 µg/m3 LFGP-2 SGP-6 SGP-8 SGP-10 SGP-11 µg/m3 µg/m3 µg/m3 µg/m3 µg/m3 VOCs by EPA Method TO-15 Hydrogen Sulfide Methane by Method ASTM D-1946 Methane % NCDEQ Risk Calculator Values Vapor Intrustion-Resident Soil Gas to Indoor Air Vapor Intrusion-Non- Residential Worker Soil Gas to Indoor Air %%%%% TABLE 7 LANDFILL GAS PROBE SCREENING ELON COLLEGE LDFL NONCD0000730 ELON, ALAMANCE COUNTY, NORTH CAROLINA Manometer GEM 5000 Hygrometer Hygrometer 8/31/2023 16:49 Soil Gas 0.5 0.0 0.0 0.00 4.8 18.0 0 0.00 0.00 -0.001 29.36 44 81 8/31/2023*16:50 Soil Gas 0.3 0.0 0.0 0.00 4.7 18.0 0 0.00 -0.02 -0.001 29.36 44 81 2/21/2024 11:35 Soil Gas 0.1 0.0 0.0 0.00 2.9 11.2 0 0.00 0.02 0.020 29.72 49 46 8/31/2023 16:10 Soil Gas 2.8 33.9 >222,395,092.02 17.6 0.4 0 0.00 -0.08 0.002 29.36 44 81 2/21/2024 12:18 Soil Gas 0.8 1.2 24 7,872,392.64 7.5 12.9 0 0.00 0.02 0.002 29.72 45 49 2/21/2024*12:22 Soil Gas 0.6 0.3 6 1,968,098.16 1.0 19.8 0 0.00 -0.07 -1.070 29.72 45 49 8/31/2023 16:30 Soil Gas 1.1 0.0 0.0 0.00 11.2 3.5 0 0.00 -0.06 0.000 29.36 44 81 2/21/2024 -Soil Gas 8/31/2023 16:54 Soil Gas 1.2 0.0 0.0 0.00 4.0 18.2 0 0.00 0.00 0.000 29.36 44 81 2/21/2024 -Soil Gas 8/31/2023 16:23 Soil Gas 1.6 0.0 0.0 0.00 6.2 10.9 0 0.00 -0.02 -0.004 29.36 44 81 2/21/2024 11:55 Soil Gas 0.0 0.0 0.0 0.00 6.5 12.9 0 0.00 0.06 0.003 29.72 49 46 8/31/2023 16:00 Soil Gas 0.7 0.0 0.0 0.00 0.1 19.2 0 0.00 -0.09 0.008 29.36 45 80 2/21/2024 -Soil Gas 8/31/2023 16:05 Soil Gas 2.5 0.0 0.0 0.00 6.0 11.8 0 0.00 -0.03 0.006 29.36 44 81 2/21/2024 12:10 Soil Gas 0.2 0.1 2 656,032.72 1.5 19.7 0 0.00 -2.83 0.052 29.72 45 49 8/31/2023 16:42 Soil Gas 1.7 0.0 0.0 0.00 5.7 9.6 0 0.00 -0.10 -0.003 29.36 44 81 2/21/2024 11:10 Soil Gas 0.1 0.1 2 656,032.72 6.1 9.5 0 0.00 0.03 -0.571 29.76 52 45 8/31/2023 15:20 Soil Gas 0.0 0.0 0.0 0.00 0.1 20.8 1 1,393.87 ----29.40 45 80 2/21/2024 10:55 Soil Gas 0.0 0.0 0.0 0.00 0.2 21.2 0 0.00 ----29.76 52 45 BG-2 8/31/2023 16:59 -Soil Gas 0.0 0.1 2.0 656,032.72 0.0 21.4 0 0.00 ----29.36 45 81 Notes: 1) ppm = parts per million. 2) LEL = Lower Explosive Limit. 3) μg/mᶟ = Micrograms per Cubic Meter. 4) Hg = Mercury. 5) VOCs = Volatile Organic Compounds. 6) Methane (%LEL) calculated using the following formula: = (% by volume)*(100% LEL) / (5% by volume). 7) Methane (μg/mᶟ) calculated using the following formula: = [(% by volume)*10,000*16.04 / 24.45]*1000 where 16.04 grams/mol is the molecular weight of methane and 24.45 is a conversion factor that represents the volume of one mole of gas in liters. 8) Hydrogen Sulfide (μg/mᶟ) calculated using the following formula: = [(ppm by volume)*34.08 / 24.45]*1000 where 34.08 grams/mol is the molecular weight of hydrogen Sulfide and 24.45 is a conversion factor that represents the volume of one mole of gas in liters. 9) * = duplicate reading. 10) BG = Background. No Readings - Water in Line. No Readings - Water in Line. No Readings - Water in Line. SGP-10 SGP-11 BG-1 10 10 10 5 10 8 10 7 - LFGP-2 SGP-6 SGP-7 SGP-8 SGP-9 LFGP-1 inches Hg Methane (CH4) Carbon Dioxide (CO2) Oxygen (O2) Hydrogen Sulfide (H2S) Barometric Pressure %°F MiniRae 3000 FIELD MEASUREMENTS Sample ID Date Time Depth (feet)Data Type VOCs (ppm) Humidity Temperature % by volume % LEL μg/mᶟ % GEM 5000 Differential Pressure inches H2O Post-Sample%ppm μg/mᶟ Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W Pre-Regulatory Landfill Unit FIGURES AMICK ROA D EL O N O S S I P E E R O A D 590 59 0 590 590 600 600 60 0 60 0 600 600 600 600 600 610 610 610 610 610 106 610 62 0 062 620 620 630 630 630 640 64 0 640 586 586 588 588 592 592 592 592 594 59 4 594 594 594 594 594 594 594 596 596 596 596 596 596 596 598 59 8 598 598 598 598 598 602 602 602 602 602 602 602 602 602 604 604 604 604 60 4 604 604 604 604 60 6 60 6 606 606 60 6 606 606 606 606 606 606 608 608 608 608 608 608 608 612 612 612 612 612 612 61 2 614 614 614 614 614 614 616 616 61 6 61 6 616 616 616 618 618 618 618 622 622 226 622 622 622 624 624 624 624 624 626 626 626 62 6 626 628 628 628 62 8 628 63 2 632 632 634 634 636 636 638 638 638 638 642 MW-01 LEGEND: NOTE: ALL LOCATIONS ARE APPROXIMATE PARCEL LINE MW-1 MONITORING WELL Well Identification SGP-1 SOIL GAS PROBE Sample Identification TOPO GRAPHIC LINE610 2830 AMICK EXPOSED SURFACE WATER ON STEEP SLOPE NDARYWASTE DISPOSAL BOURINGS)(BASED ON JUNE 2015 SOIL BO 2834 WATER SUPPLY WELL Well Identification TRAVIS CREEK 50 SCALE: 1" = 200' 0 100 150 200 N MW-04 MW-05 MW-06 MW-03 W-07M W-02M SW/SD-01 SW/SD-04 SW/SD-02 SW/SD-05 SW/SD-03 LFGP-1 LFGP-2 SGP-8 SGP-6 SGP-11 SGP-9 SGP-10 SW/SD-1 SURFACE WATER/ SEDIMENT SAMPLE Sample Identification SGP-7 Figure: Dr a w i n g F i l e : Pro j e c t N u m b e r : Ck d . B y : Drn . B y : Ap p ' d B y : Ck d . D a t e : Scale: Date: H: \ 2 0 2 3 \ 1 O T H E R O F F I C E S \ N O R T H C A R O L I N A \ N C D E N R - P R E - R E G U L A T O R Y L A N D F I L L \ E L O N C O L L E G E \ P R L U 0 7 3 0 V - S I T E . D W G , FI G 1 10/09/2023 SE E L O W E R L E F T PR L U 0 7 3 0 V AS SHOWN DH LS 1 NO T E S : 1. Fe a t u r e s s h o w n a r e n o t a n a u t h o r i t a t i v e l o c a t i o n , n o r a r e t h e y p r e s e n t e d to a s t a t e d a c c u r a c y . CO O R D I N A T E S Y S T E M : NA D 1 9 8 3 N O R T H C A R O L I N A S T A T E P L A N E F I P S 3 2 0 0 , U S S U R V E Y F E E T 2834 AMICK LFGP-1 LANDFILL GAS PROBE Sample Identification Benchmark (TP-1) NO N C D 0 0 0 0 7 3 0 EL O N , A L A M A N C E C O U N T Y , N O R T H C A R O L I N A OR D E R 7 3 0 R I - 4 EL O N C O L L E G E L D F L - A M I C K R O A D T A S K SI T E M A P AMICK ROA D EL O N O S S I P E E R O A D 590 59 0 590 590 600 600 60 0 60 0 600 600 600 600 600 610 610 610 610 610 610 610 62 0 620 620 620 630 630 630 640 64 0 640 586 586 588 588 592 592 592 592 594 59 4 594 594 594 594 594 594 594 596 596 596 596 596 596 596 598 59 8 598 598 598 598 598 602 602 602 602 602 602 602 602 602 604 604 604 604 60 4 604 604 604 604 60 6 60 6 606 606 60 6 606 606 606 606 606 606 608 608 608 608 608 608 608 612 612 612 612 612 612 61 2 614 614 614 614 614 614 616 616 61 6 61 6 616 616 616 618 618 618 618 622 622 622 622 622 622 624 624 624 624 624 626 626 626 62 6 626 628 628 628 62 8 628 63 2 632 632 634 634 636 636 638 638 638 638 642 50 SCALE: 1" = 200' 0 100 150 200 N LEGEND: NOTE: ALL LOCATIONS ARE APPROXIMATE PARCEL LINE TOPO GRAPHIC LINE610 TRAVIS CREEK MW-2 87.84 MONITORING WELL Well Identification Relative Groundwater Elevation (ft) 85.0 GROUNDWATER ELEVATION CONTOUR (DASHED WHERE INFERRED) (ft) GROUNDWATER FLOW DIRECTION MW-01 EXPOSED SURFACE WATER ON STEEP SLOPE WASTE DISPOSAL BOUNDARY(BASED ON JUNE 2015 SOIL BORINGS) MW-04 MW-05 MW-06 MW-03 MW-07 MW-02 89.33 87.84 98.08 90.91 84.10 80.39 113.76 110 . 0 105 . 0 100.0 95.0 90.0 85.0 Figure: Dr a w i n g F i l e : Pro j e c t N u m b e r : Ck d . B y : Drn . B y : Ap p ' d B y : Ck d . D a t e : Scale: Date: C: \ U S E R S \ M I L E S . S H A R P L E S S \ O N E A T L A S \ D I G I T A L S E R V I C E S - F I L E S E R V E R \ 2 0 2 4 \ C A D D E P A R T M E N T \ N C D E N R - P R E - R E G U L A T O R Y L A N D F I L L \ E L O N C O L L E G E \ P R L U 0 7 3 0 W - P O T . D W G , FI G 2 03/27/2024 SE E L O W E R L E F T PR L U 0 7 3 0 W AS SHOWN MS LS 2 NO T E S : 1. Fe a t u r e s s h o w n a r e n o t a n a u t h o r i t a t i v e l o c a t i o n , n o r a r e t h e y p r e s e n t e d to a s t a t e d a c c u r a c y . 2. Gr o u n d w a t e r e l e v a t i o n s m e a s u r e d o n 2 / 1 9 / 2 0 2 4 . CO O R D I N A T E S Y S T E M : NA D 1 9 8 3 N O R T H C A R O L I N A S T A T E P L A N E F I P S 3 2 0 0 , U S S U R V E Y F E E T Ca r c i n o g e n i c R i s k s a n d H a zar d Quo t i e n t s a r e c a l c u l a t e d v i a t h e N C D E Q Ris k C a l c u l a t o r f o r D i r e c t C o n t a c t w i t h G r o u n d w a t e r U s e a s a R e s i d e n t or N o n - R e s i d e n t i a l W o r k e r . B o l d i n d i c a t e s e Co n c e n t r a t i o n s i n BO L D e qu a l o r e x c e e d 2 L g r o u n d w a t e r s t a n d a r d s . xc e e d a n c e . 3.4. NO N C D 0 0 0 0 7 3 0 EL O N , A L A M A N C E C O U N T Y , N O R T H C A R O L I N A OR D E R 7 3 0 R I - 4 EL O N C O L L E G E L D F L - A M I C K R O A D T A S K GR O U N D W A T E R I N V E S T I G A T I O N AMICK ROA D EL O N O S S I P E E R O A D 590 59 0 590 590 600 600 60 0 60 0 600 600 600 600 600 610 610 610 610 610 106 610 62 0 026 620 620 630 630 630 640 64 0 640 586 586 588 588 592 592 592 592 594 59 4 594 594 594 594 594 594 594 596 596 596 596 596 596 596 598 59 8 598 598 598 598 598 602 602 602 602 602 602 602 602 602 604 604 604 604 60 4 604 604 604 604 60 6 60 6 606 606 60 6 606 606 606 606 606 606 608 608 608 608 608 608 608 612 612 612 612 612 612 61 2 614 614 614 614 614 614 616 661 61 6 61 6 616 616 616 618 861 618 618 622 622 226 622 622 622 624 624 624 624 624 626 626 626 62 6 626 628 628 628 62 8 628 63 2 632 632 634 634 636 636 638 638 638 638 642 LEGEND: POSED SURFACE WATEREX ON STEEP SLOPE NDARYWASTE DISPOSAL BOURINGS)(BASED ON JUNE 2015 SOIL BO TRAVIS CREEK 50 SCALE: 1" = 200' 0 100 150 200 N LFGP-1 LFGP-2 SGP-8 SGP-6 SGP-11 SGP-9 SGP-10 Sample Identification SGP-7 Figure: Dr a w i n g F i l e : Pro j e c t N u m b e r : Ck d . B y : Drn . B y : Ap p ' d B y : Ck d . D a t e : Scale: Date: H: \ 2 0 2 3 \ 1 O T H E R O F F I C E S \ N O R T H C A R O L I N A \ N C D E N R - P R E - R E G U L A T O R Y L A N D F I L L \ E L O N C O L L E G E \ P R L U 0 7 3 0 V - G A S V O C . D W G , FI G 4/8/2024 SE E L O W E R L E F T PR L U 0 7 3 0 W AS SHOWN DH LS 3A NA D 1 9 8 3 N O R T H C A R O L I N A S T A T E P L A N E F I P S 3 2 0 0 , U S S U R V E Y F E E T CO O R D I N A T E S Y S T E M : 4. µg/m 3 = m i c r o g r a m s p e r c u b i c m e t e r th a n 1 . 0 ) . (c a r c i n o g e n i c r i s k s g r e a t e r t h a n 1 . 0 E - 0 4 o r h a z a r d q u o t i e n t s g r e a t e r Ex c e e d a n c e s t o t h e r e p r e s e n t a t i v e r i s k v a l u e s a r e s h o w n i n B O L D 3. As t e r i s k s ( * ) d e n o t e d u p l i c a t e s a m p l e . 2. to a s t a t e d a c c u r a c y . Fe a t u r e s s h o w n a r e n o t a n a u t h o r i t a t i v e l o c a t i o n , n o r a r e t h e y p r e s e n t e d 1. NO T E S : SOIL GAS PROBE LANDFILL GAS PROBE SGP-1 LFGP-1 Sample Identification 610 TOPO GRAPHIC LINE PARCEL LINE NO N C D 0 0 0 0 7 3 0 EL O N , A L A M A N C E C O U N T Y , N O R T H C A R O L I N A OR D E R 7 3 0 R I - 4 EL O N C O L L E G E L D F L - A M I C K R O A D TA S K LA N D F I L L G A S I N V E S T I G A T I O N AMICK ROA D EL O N O S S I P E E R O A D 590 59 0 590 590 600 600 60 0 60 0 600 600 600 600 600 610 610 610 610 610 106 610 62 0 206 620 620 630 630 630 640 64 0 640 586 586 588 588 592 592 592 592 594 59 4 594 594 594 594 594 594 594 596 596 596 596 596 596 596 598 59 8 598 598 598 598 598 602 602 602 602 602 602 602 602 602 604 604 604 604 60 4 604 604 604 604 60 6 60 6 606 606 60 6 606 606 606 606 606 606 608 608 608 608 608 608 608 612 612 612 612 612 612 61 2 614 614 614 614 614 614 616 661 61 6 61 6 616 616 616 618 861 618 618 622 622 622 622 622 622 624 624 624 624 624 626 626 626 62 6 626 628 628 628 62 8 628 63 2 632 632 634 634 636 636 638 638 638 638 642 EXPOSED SURFACE WATER ON STEEP SLOPE WASTE DISPOSAL BOUNDARY(BASED ON JUNE 2015 SOIL BORINGS) 50 SCALE: 1" = 200' 0 100 150 200 N LFGP-1 LFGP-2 SGP-8 SGP-6 SGP-11 SGP-9 SGP-10 SGP-7 Figure: Dr a w i n g F i l e : Pro j e c t N u m b e r : Ck d . B y : Drn . B y : Ap p ' d B y : Ck d . D a t e : Scale: Date: H: \ 2 0 2 3 \ 1 O T H E R O F F I C E S \ N O R T H C A R O L I N A \ N C D E N R - P R E - R E G U L A T O R Y L A N D F I L L \ E L O N C O L L E G E \ P R L U 0 7 3 0 V - G A S S C R E E N I N G . D W G , FI G 4 A 4/8/2024 SE E L O W E R L E F T PR L U 0 7 3 0 W AS SHOWN DH LS 3B NO T E S : 1. Fe a t u r e s s h o w n a r e n o t a n a u t h o r i t a t i v e l o c a t i o n , n o r a r e t h e y p r e s e n t e d to a s t a t e d a c c u r a c y . 2. As t e r i s k s ( * ) d e n o t e d u p l i c a t e s a m p l e . 3. Ca r c i n o g e n i c R i s k s a n d H a z a r d Q u o t i e n t s a r e c a l c u l a t e d v i a t h e NC D E Q R i s k C a l c u l a t o r f o r V a p o r I n t r u s i o n a s a R e s i d e n t o r No n - R e s i d e n t i a l W o r k e r . 4. Ex c e e d a n c e s t o t h e r e p r e s e n t a t i v e r i s k v a l u e s a r e s h o w n i n B O L D (c a r c i n o g e n i c r i s k s g r e a t e r t h a n 1 . 0 E - 0 4 o r h a z a r d q u o t i e n t s g r e a t e r th a n 1 . 0 ) . 5. BD L = B e l o w d e t e c t i o n l i m i t CO O R D I N A T E S Y S T E M : NA D 1 9 8 3 N O R T H C A R O L I N A S T A T E P L A N E F I P S 3 2 0 0 , U S S U R V E Y F E E T LEGEND: SOIL GAS PROBE Sample Identification SGP-1 LFGP-1 LANDFILL GAS PROBE Sample Identification PARCEL LINE TOPO GRAPHIC LINE TRAVIS CREEK 610 NO N C D 0 0 0 0 7 3 0 EL O N , A L A M A N C E C O U N T Y , N O R T H C A R O L I N A OR D E R 7 3 0 R I - 4 EL O N C O L L E G E L D F L - A M I C K R O A D TA S K LA N D F I L L G A S I N V E S T I G A T I O N Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W Pre-Regulatory Landfill Unit APPENDIX A FIELD NOTES AND CALIBRATION DOCUMENTS Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W Pre-Regulatory Landfill Unit APPENDIX B PHOTOLOG Photo 1: Monitoring Well MW-01. Photo 2: Monitoring Well MW-02. Photograph Log Elon College Landfill – Task Order 730RI-3 & 730RI-4 Elon, Alamance County, North Carolina 2725 E. Millbrook Road, Suite 121 Raleigh, North Carolina Tel: (919) 871-0999 Fax: (737) 207-8261 Photos Taken By: Laura de Sousa ID No: NONCD0000730 ATC Project No.: PRLU0730W Photo 3: Monitoring Well MW-03. Photo 4: Monitoring Well MW-04. Photograph Log Elon College Landfill – Task Order 730RI-3 & 730RI-4 Elon, Alamance County, North Carolina 2725 E. Millbrook Road, Suite 121 Raleigh, North Carolina Tel: (919) 871-0999 Fax: (737) 207-8261 Photos Taken By: Laura de Sousa ID No: NONCD0000730 ATC Project No.: PRLU0730W Photo 5: Monitoring Well MW-05. Photo 6: Monitoring Well MW-06. Photograph Log Elon College Landfill – Task Order 730RI-3 & 730RI-4 Elon, Alamance County, North Carolina 2725 E. Millbrook Road, Suite 121 Raleigh, North Carolina Tel: (919) 871-0999 Fax: (737) 207-8261 Photos Taken By: Laura de Sousa ID No: NONCD0000730 ATC Project No.: PRLU0730W Photo 7: Monitoring Well MW-07. Photo 8: Soil-gas probe SGP-06. Photograph Log Elon College Landfill – Task Order 730RI-3 & 730RI-4 Elon, Alamance County, North Carolina 2725 E. Millbrook Road, Suite 121 Raleigh, North Carolina Tel: (919) 871-0999 Fax: (737) 207-8261 Photos Taken By: Laura de Sousa ID No: NONCD0000730 ATC Project No.: PRLU0730W Photo 9: Soil-gas probe SGP-07. Photo 10: Soil-gas probe SGP-08. Photograph Log Elon College Landfill – Task Order 730RI-3 & 730RI-4 Elon, Alamance County, North Carolina 2725 E. Millbrook Road, Suite 121 Raleigh, North Carolina Tel: (919) 871-0999 Fax: (737) 207-8261 Photos Taken By: Laura de Sousa ID No: NONCD0000730 ATC Project No.: PRLU0730W Photo 11: Soil-gas probe SGP-09. Photo 12: Soil-gas probe SGP-10. Photograph Log Elon College Landfill – Task Order 730RI-3 & 730RI-4 Elon, Alamance County, North Carolina 2725 E. Millbrook Road, Suite 121 Raleigh, North Carolina Tel: (919) 871-0999 Fax: (737) 207-8261 Photos Taken By: Laura de Sousa ID No: NONCD0000730 ATC Project No.: PRLU0730W Photo 13: Soil-gas probe SGP-11. Photo 14: Landfill gas probe LFGP-1. Photograph Log Elon College Landfill – Task Order 730RI-3 & 730RI-4 Elon, Alamance County, North Carolina 2725 E. Millbrook Road, Suite 121 Raleigh, North Carolina Tel: (919) 871-0999 Fax: (737) 207-8261 Photos Taken By: Laura de Sousa ID No: NONCD0000730 ATC Project No.: PRLU0730W Photo 15: Landfill gas probe LFGP-2. Photograph Log Elon College Landfill – Task Order 730RI-3 & 730RI-4 Elon, Alamance County, North Carolina 2725 E. Millbrook Road, Suite 121 Raleigh, North Carolina Tel: (919) 871-0999 Fax: (737) 207-8261 Photos Taken By: Laura de Sousa ID No: NONCD0000730 ATC Project No.: PRLU0730W Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W Pre-Regulatory Landfill Unit APPENDIX C LABORATORY ANALYTICAL REPORT - GROUNDWATER ANALYTICAL REPORT April 05, 2024 Revised Report ATC Group Services LLC Sample Delivery Group:L1707788 Samples Received:02/21/2024 Project Number: Description:Elon College LF Report To:Laura De Sousa 2725 E. Millbrook Road, Ste 121 Raleigh, NC 27604 Entire Report Reviewed By: April 05, 2024 [Preliminary Report] Heather J Wagner Project Manager Results relate only to the items tested or calibrated and are reported as rounded values. This test report shall not be reproduced, except in full, without written approval of the laboratory. Where applicable, sampling conducted by Pace Analytical National is performed per guidance provided in laboratory standard operating procedures ENV-SOP-MTJL-0067 and ENV-SOP-MTJL-0068. Where sampling conducted by the customer, results relate to the accuracy of the information provided, and as the samples are received. Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 615-758-5858 800-767-5859 www.pacenational.com 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 1 of 52 April 05, 2024 Heather J Wagner Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 1 of 52 TABLE OF CONTENTS Cp: Cover Page 1 Tc: Table of Contents 2 Ss: Sample Summary 3 Cn: Case Narrative 5 Sr: Sample Results 6 MW-01 L1707788-01 6 MW-02 L1707788-02 9 MW-03 L1707788-03 12 MW-04 L1707788-04 15 MW-05 L1707788-05 18 MW-06 L1707788-06 21 MW-07 L1707788-07 24 DUP-A L1707788-08 27 EQUIP-BLANK-1 L1707788-09 30 Qc: Quality Control Summary 33 Metals (ICPMS) by Method 6020B 33 Volatile Organic Compounds (GC/MS) by Method 8260D 35 Semi Volatile Organic Compounds (GC/MS) by Method 8270E 44 Gl: Glossary of Terms 49 Al: Accreditations & Locations 50 Sc: Sample Chain of Custody 51 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 2 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 2 of 52 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-01 L1707788-01 GW Laura De Sousa 02/19/24 17:50 02/21/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Metals (ICPMS) by Method 6020B WG2231829 1 02/23/24 08:13 02/26/24 16:59 JPD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2232457 1 02/23/24 14:45 02/23/24 14:45 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2235111 1 02/29/24 01:30 02/29/24 01:30 ACG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2230421 1 02/23/24 06:56 02/23/24 21:34 ALM Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2233144 1.11 02/24/24 06:50 02/26/24 16:24 ALM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-02 L1707788-02 GW Laura De Sousa 02/19/24 16:25 02/21/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Metals (ICPMS) by Method 6020B WG2231829 1 02/23/24 08:13 02/26/24 17:12 JPD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2232457 1 02/23/24 15:04 02/23/24 15:04 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2235111 1 02/29/24 01:52 02/29/24 01:52 ACG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2230421 1 02/23/24 06:56 02/23/24 21:54 ALM Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2233144 1 02/24/24 06:50 02/26/24 16:46 ALM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-03 L1707788-03 GW Laura De Sousa 02/19/24 11:25 02/21/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Metals (ICPMS) by Method 6020B WG2231829 1 02/23/24 08:13 02/26/24 17:15 JPD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2232457 1 02/23/24 15:23 02/23/24 15:23 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2235111 1 02/29/24 02:14 02/29/24 02:14 ACG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2230421 1 02/23/24 06:56 02/23/24 22:13 ALM Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2233144 1 02/24/24 06:50 02/26/24 17:08 ALM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-04 L1707788-04 GW Laura De Sousa 02/19/24 12:30 02/21/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Metals (ICPMS) by Method 6020B WG2231829 1 02/23/24 08:13 02/26/24 17:18 JPD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2232457 1 02/23/24 15:41 02/23/24 15:41 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2235111 1 02/29/24 02:36 02/29/24 02:36 ACG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2230421 1 02/23/24 06:56 02/23/24 22:32 ALM Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2233144 1 02/24/24 06:50 02/26/24 17:29 ALM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-05 L1707788-05 GW Laura De Sousa 02/19/24 13:50 02/21/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Metals (ICPMS) by Method 6020B WG2231829 1 02/23/24 08:13 02/26/24 17:21 JPD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2232457 1 02/23/24 16:00 02/23/24 16:00 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2235111 1 02/29/24 02:57 02/29/24 02:57 ACG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2230421 1 02/23/24 06:56 02/23/24 22:51 ALM Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2233144 1 02/24/24 06:50 02/26/24 17:51 ALM Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 3 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 3 of 52 SAMPLE SUMMARY Collected by Collected date/time Received date/time MW-06 L1707788-06 GW Laura De Sousa 02/19/24 10:40 02/21/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Metals (ICPMS) by Method 6020B WG2231829 1 02/23/24 08:13 02/26/24 17:39 JPD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2232457 1 02/23/24 16:19 02/23/24 16:19 JAH Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2235111 1 02/29/24 03:19 02/29/24 03:19 ACG Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2230421 1 02/23/24 06:56 02/23/24 23:11 ALM Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2233144 1.05 02/24/24 06:50 02/26/24 18:13 ALM Mt. Juliet, TN Collected by Collected date/time Received date/time MW-07 L1707788-07 GW Laura De Sousa 02/19/24 17:10 02/21/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Metals (ICPMS) by Method 6020B WG2231829 1 02/23/24 08:13 02/26/24 17:42 JPD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2233830 1 02/26/24 09:29 02/26/24 09:29 JCP Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2230421 1 02/23/24 06:56 02/23/24 23:30 ALM Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2233144 1 02/24/24 06:50 02/26/24 18:35 ALM Mt. Juliet, TN Collected by Collected date/time Received date/time DUP-A L1707788-08 GW Laura De Sousa 02/19/24 16:25 02/21/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Metals (ICPMS) by Method 6020B WG2231829 1 02/23/24 08:13 02/26/24 17:45 JPD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2233830 1 02/26/24 09:51 02/26/24 09:51 JCP Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2230421 1 02/23/24 06:56 02/23/24 23:49 ALM Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2233144 1 02/24/24 06:50 02/26/24 18:56 ALM Mt. Juliet, TN Collected by Collected date/time Received date/time EQUIP-BLANK-1 L1707788-09 GW Laura De Sousa 02/19/24 15:40 02/21/24 09:00 Method Batch Dilution Preparation Analysis Analyst Location date/time date/time Metals (ICPMS) by Method 6020B WG2231829 1 02/23/24 08:13 02/26/24 17:48 JPD Mt. Juliet, TN Volatile Organic Compounds (GC/MS) by Method 8260D WG2233830 1 02/26/24 09:07 02/26/24 09:07 JCP Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2230421 1 02/23/24 06:56 02/24/24 00:08 ALM Mt. Juliet, TN Semi Volatile Organic Compounds (GC/MS) by Method 8270E WG2233144 1 02/24/24 06:50 02/26/24 19:18 ALM Mt. Juliet, TN 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 4 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 4 of 52 CASE NARRATIVE All sample aliquots were received at the correct temperature, in the proper containers, with the appropriate preservatives, and within method specified holding times, unless qualified or notated within the report. Where applicable, all MDL (LOD) and RDL (LOQ) values reported for environmental samples have been corrected for the dilution factor used in the analysis. All Method and Batch Quality Control are within established criteria except where addressed in this case narrative, a non-conformance form or properly qualified within the sample results. By my digital signature below, I affirm to the best of my knowledge, all problems/anomalies observed by the laboratory as having the potential to affect the quality of the data have been identified by the laboratory, and no information or data have been knowingly withheld that would affect the quality of the data. [Preliminary Report] Heather J Wagner Project Manager Report Revision History Level II Report - Version 1: 02/29/24 14:46 Project Narrative Revised Report: Revised to include thallium results per the COC. This report replaces the report issued 2/29/2024. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 5 of 52 Heather J Wagner Project Manager ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 5 of 52 SAMPLE RESULTS - 01 L1707788 MW-01 Collected date/time: 02/19/24 17:50 Metals (ICPMS) by Method 6020B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Antimony U 1.03 4.00 1 02/26/2024 16:59 WG2231829 Arsenic U 0.180 2.00 1 02/26/2024 16:59 WG2231829 Barium 15.1 0.381 2.00 1 02/26/2024 16:59 WG2231829 Beryllium U 0.190 2.00 1 02/26/2024 16:59 WG2231829 Cadmium U 0.150 1.00 1 02/26/2024 16:59 WG2231829 Chromium 2.12 1.24 2.00 1 02/26/2024 16:59 WG2231829 Copper U 1.51 5.00 1 02/26/2024 16:59 WG2231829 Cobalt 0.718 J 0.0596 2.00 1 02/26/2024 16:59 WG2231829 Lead U 0.849 2.00 1 02/26/2024 16:59 WG2231829 Manganese 20.2 0.704 5.00 1 02/26/2024 16:59 WG2231829 Nickel 1.04 J 0.816 2.00 1 02/26/2024 16:59 WG2231829 Selenium U 0.300 2.00 1 02/26/2024 16:59 WG2231829 Silver U 0.0700 2.00 1 02/26/2024 16:59 WG2231829 Thallium U 0.121 2.00 1 02/26/2024 16:59 WG2231829 Vanadium 5.78 0.664 5.00 1 02/26/2024 16:59 WG2231829 Zinc 3.47 J 3.02 25.0 1 02/26/2024 16:59 WG2231829 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 02/23/2024 14:45 WG2232457 Acrolein U J4 2.54 50.0 1 02/23/2024 14:45 WG2232457 Acrylonitrile U 0.671 10.0 1 02/29/2024 01:30 WG2235111 Benzene U 0.0941 1.00 1 02/23/2024 14:45 WG2232457 Bromobenzene U 0.118 1.00 1 02/23/2024 14:45 WG2232457 Bromodichloromethane U 0.136 1.00 1 02/23/2024 14:45 WG2232457 Bromoform U 0.129 1.00 1 02/23/2024 14:45 WG2232457 Bromomethane U 0.605 5.00 1 02/23/2024 14:45 WG2232457 n-Butylbenzene U 0.157 1.00 1 02/23/2024 14:45 WG2232457 sec-Butylbenzene U 0.125 1.00 1 02/23/2024 14:45 WG2232457 tert-Butylbenzene U 0.127 1.00 1 02/23/2024 14:45 WG2232457 Carbon tetrachloride U 0.128 1.00 1 02/23/2024 14:45 WG2232457 Chlorobenzene U 0.116 1.00 1 02/23/2024 14:45 WG2232457 Chlorodibromomethane U 0.140 1.00 1 02/23/2024 14:45 WG2232457 Chloroethane U 0.192 5.00 1 02/23/2024 14:45 WG2232457 Chloroform U 0.111 5.00 1 02/23/2024 14:45 WG2232457 Chloromethane U 0.960 2.50 1 02/29/2024 01:30 WG2235111 2-Chlorotoluene U 0.106 1.00 1 02/23/2024 14:45 WG2232457 4-Chlorotoluene U 0.114 1.00 1 02/23/2024 14:45 WG2232457 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/23/2024 14:45 WG2232457 1,2-Dibromoethane U 0.126 1.00 1 02/23/2024 14:45 WG2232457 Dibromomethane U 0.122 1.00 1 02/23/2024 14:45 WG2232457 1,2-Dichlorobenzene U 0.107 1.00 1 02/23/2024 14:45 WG2232457 1,3-Dichlorobenzene U 0.110 1.00 1 02/23/2024 14:45 WG2232457 1,4-Dichlorobenzene U 0.120 1.00 1 02/23/2024 14:45 WG2232457 Dichlorodifluoromethane U 0.374 5.00 1 02/23/2024 14:45 WG2232457 1,1-Dichloroethane U 0.100 1.00 1 02/23/2024 14:45 WG2232457 1,2-Dichloroethane U 0.0819 1.00 1 02/23/2024 14:45 WG2232457 1,1-Dichloroethene U 0.188 1.00 1 02/23/2024 14:45 WG2232457 cis-1,2-Dichloroethene U 0.126 1.00 1 02/23/2024 14:45 WG2232457 trans-1,2-Dichloroethene U 0.149 1.00 1 02/23/2024 14:45 WG2232457 1,2-Dichloropropane U 0.149 1.00 1 02/29/2024 01:30 WG2235111 1,1-Dichloropropene U 0.142 1.00 1 02/23/2024 14:45 WG2232457 1,3-Dichloropropane U 0.110 1.00 1 02/23/2024 14:45 WG2232457 cis-1,3-Dichloropropene U 0.111 1.00 1 02/23/2024 14:45 WG2232457 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 6 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 6 of 52 SAMPLE RESULTS - 01 L1707788 MW-01 Collected date/time: 02/19/24 17:50 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time trans-1,3-Dichloropropene U 0.118 1.00 1 02/23/2024 14:45 WG2232457 2,2-Dichloropropane U 0.161 1.00 1 02/23/2024 14:45 WG2232457 Di-isopropyl ether U 0.105 1.00 1 02/29/2024 01:30 WG2235111 Ethylbenzene U 0.137 1.00 1 02/23/2024 14:45 WG2232457 Hexachloro-1,3-butadiene U 0.337 1.00 1 02/23/2024 14:45 WG2232457 Isopropylbenzene U 0.105 1.00 1 02/23/2024 14:45 WG2232457 p-Isopropyltoluene U 0.120 1.00 1 02/23/2024 14:45 WG2232457 2-Butanone (MEK)U 1.19 10.0 1 02/23/2024 14:45 WG2232457 Methylene Chloride U 0.430 5.00 1 02/23/2024 14:45 WG2232457 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/23/2024 14:45 WG2232457 Methyl tert-butyl ether U 0.101 1.00 1 02/23/2024 14:45 WG2232457 Naphthalene U 1.00 5.00 1 02/29/2024 01:30 WG2235111 n-Propylbenzene U 0.0993 1.00 1 02/23/2024 14:45 WG2232457 Styrene U 0.118 1.00 1 02/29/2024 01:30 WG2235111 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/23/2024 14:45 WG2232457 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/23/2024 14:45 WG2232457 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 02/23/2024 14:45 WG2232457 Tetrachloroethene U 0.300 1.00 1 02/23/2024 14:45 WG2232457 Toluene U 0.278 1.00 1 02/23/2024 14:45 WG2232457 1,2,3-Trichlorobenzene U 0.230 1.00 1 02/23/2024 14:45 WG2232457 1,2,4-Trichlorobenzene U 0.481 1.00 1 02/23/2024 14:45 WG2232457 1,1,1-Trichloroethane U J4 0.149 1.00 1 02/23/2024 14:45 WG2232457 1,1,2-Trichloroethane U 0.158 1.00 1 02/23/2024 14:45 WG2232457 Trichloroethene U 0.190 1.00 1 02/23/2024 14:45 WG2232457 Trichlorofluoromethane U 0.160 5.00 1 02/23/2024 14:45 WG2232457 1,2,3-Trichloropropane U 0.237 2.50 1 02/23/2024 14:45 WG2232457 1,2,4-Trimethylbenzene U 0.322 1.00 1 02/23/2024 14:45 WG2232457 1,2,3-Trimethylbenzene U 0.104 1.00 1 02/23/2024 14:45 WG2232457 1,3,5-Trimethylbenzene U 0.104 1.00 1 02/23/2024 14:45 WG2232457 Vinyl chloride U 0.234 1.00 1 02/23/2024 14:45 WG2232457 Xylenes, Total U 0.174 3.00 1 02/23/2024 14:45 WG2232457 (S) Toluene-d8 99.5 80.0-120 02/23/2024 14:45 WG2232457 (S) Toluene-d8 102 80.0-120 02/29/2024 01:30 WG2235111 (S) 4-Bromofluorobenzene 95.0 77.0-126 02/23/2024 14:45 WG2232457 (S) 4-Bromofluorobenzene 91.6 77.0-126 02/29/2024 01:30 WG2235111 (S) 1,2-Dichloroethane-d4 127 70.0-130 02/23/2024 14:45 WG2232457 (S) 1,2-Dichloroethane-d4 98.5 70.0-130 02/29/2024 01:30 WG2235111 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,4-Dioxane U 0.0447 0.400 1 02/23/2024 21:34 WG2230421 Acenaphthene U 0.0983 1.11 1.11 02/26/2024 16:24 WG2233144 Acenaphthylene U 0.102 1.11 1.11 02/26/2024 16:24 WG2233144 Anthracene U 0.0892 1.11 1.11 02/26/2024 16:24 WG2233144 Benzidine U J3 J4 4.15 11.1 1.11 02/26/2024 16:24 WG2233144 Benzo(a)anthracene U 0.221 1.11 1.11 02/26/2024 16:24 WG2233144 Benzo(b)fluoranthene U 0.144 1.11 1.11 02/26/2024 16:24 WG2233144 Benzo(k)fluoranthene U 0.133 1.11 1.11 02/26/2024 16:24 WG2233144 Benzo(g,h,i)perylene U 0.134 1.11 1.11 02/26/2024 16:24 WG2233144 Benzo(a)pyrene U 0.0423 1.11 1.11 02/26/2024 16:24 WG2233144 Bis(2-chlorethoxy)methane U 0.129 11.1 1.11 02/26/2024 16:24 WG2233144 Bis(2-chloroethyl)ether U 0.152 11.1 1.11 02/26/2024 16:24 WG2233144 2,2-Oxybis(1-Chloropropane)U 0.233 11.1 1.11 02/26/2024 16:24 WG2233144 4-Bromophenyl-phenylether U 0.0973 11.1 1.11 02/26/2024 16:24 WG2233144 2-Chloronaphthalene U 0.0719 1.11 1.11 02/26/2024 16:24 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 7 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 7 of 52 SAMPLE RESULTS - 01 L1707788 MW-01 Collected date/time: 02/19/24 17:50 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 4-Chlorophenyl-phenylether U 0.103 11.1 1.11 02/26/2024 16:24 WG2233144 Chrysene U 0.144 1.11 1.11 02/26/2024 16:24 WG2233144 Dibenz(a,h)anthracene U 0.0715 1.11 1.11 02/26/2024 16:24 WG2233144 1,2-Dichlorobenzene U 0.0791 11.1 1.11 02/26/2024 16:24 WG2233144 1,3-Dichlorobenzene U 0.147 11.1 1.11 02/26/2024 16:24 WG2233144 1,4-Dichlorobenzene U 0.105 11.1 1.11 02/26/2024 16:24 WG2233144 3,3-Dichlorobenzidine U 0.235 11.1 1.11 02/26/2024 16:24 WG2233144 2,4-Dinitrotoluene U 0.109 11.1 1.11 02/26/2024 16:24 WG2233144 2,6-Dinitrotoluene U 0.278 11.1 1.11 02/26/2024 16:24 WG2233144 Fluoranthene U 0.113 1.11 1.11 02/26/2024 16:24 WG2233144 Fluorene U 0.0937 1.11 1.11 02/26/2024 16:24 WG2233144 Hexachlorobenzene U 0.0838 1.11 1.11 02/26/2024 16:24 WG2233144 Hexachloro-1,3-butadiene U 0.107 11.1 1.11 02/26/2024 16:24 WG2233144 Hexachlorocyclopentadiene U 0.0664 11.1 1.11 02/26/2024 16:24 WG2233144 Hexachloroethane U 0.141 11.1 1.11 02/26/2024 16:24 WG2233144 Indeno(1,2,3-cd)pyrene U 0.310 1.11 1.11 02/26/2024 16:24 WG2233144 Isophorone U 0.159 11.1 1.11 02/26/2024 16:24 WG2233144 Naphthalene U 0.176 1.11 1.11 02/26/2024 16:24 WG2233144 Nitrobenzene U 0.330 11.1 1.11 02/26/2024 16:24 WG2233144 n-Nitrosodimethylamine U 1.11 11.1 1.11 02/26/2024 16:24 WG2233144 n-Nitrosodiphenylamine U 2.63 11.1 1.11 02/26/2024 16:24 WG2233144 n-Nitrosodi-n-propylamine U 0.290 11.1 1.11 02/26/2024 16:24 WG2233144 Phenanthrene U 0.124 1.11 1.11 02/26/2024 16:24 WG2233144 Benzylbutyl phthalate U 0.849 3.33 1.11 02/26/2024 16:24 WG2233144 Bis(2-ethylhexyl)phthalate U 0.993 3.33 1.11 02/26/2024 16:24 WG2233144 Di-n-butyl phthalate U 0.503 3.33 1.11 02/26/2024 16:24 WG2233144 Diethyl phthalate U 0.319 3.33 1.11 02/26/2024 16:24 WG2233144 Dimethyl phthalate U 0.289 3.33 1.11 02/26/2024 16:24 WG2233144 Di-n-octyl phthalate U 1.03 3.33 1.11 02/26/2024 16:24 WG2233144 Pyrene U 0.119 1.11 1.11 02/26/2024 16:24 WG2233144 1,2,4-Trichlorobenzene U 0.0775 11.1 1.11 02/26/2024 16:24 WG2233144 4-Chloro-3-methylphenol U 0.145 11.1 1.11 02/26/2024 16:24 WG2233144 2-Chlorophenol U 0.148 11.1 1.11 02/26/2024 16:24 WG2233144 2,4-Dichlorophenol U 0.113 11.1 1.11 02/26/2024 16:24 WG2233144 2,4-Dimethylphenol U 0.0706 11.1 1.11 02/26/2024 16:24 WG2233144 4,6-Dinitro-2-methylphenol U 1.24 11.1 1.11 02/26/2024 16:24 WG2233144 2,4-Dinitrophenol U 6.58 11.1 1.11 02/26/2024 16:24 WG2233144 2-Nitrophenol U 0.130 11.1 1.11 02/26/2024 16:24 WG2233144 4-Nitrophenol U 0.159 11.1 1.11 02/26/2024 16:24 WG2233144 Pentachlorophenol U 0.347 11.1 1.11 02/26/2024 16:24 WG2233144 Phenol U 4.81 11.1 1.11 02/26/2024 16:24 WG2233144 2,4,6-Trichlorophenol U 0.111 11.1 1.11 02/26/2024 16:24 WG2233144 (S) Nitrobenzene-d5 59.4 10.0-120 02/23/2024 21:34 WG2230421 (S) 2-Fluorophenol 29.5 10.0-120 02/26/2024 16:24 WG2233144 (S) Phenol-d5 18.7 10.0-120 02/26/2024 16:24 WG2233144 (S) Nitrobenzene-d5 49.0 10.0-127 02/26/2024 16:24 WG2233144 (S) 2-Fluorobiphenyl 52.3 10.0-130 02/26/2024 16:24 WG2233144 (S) 2,4,6-Tribromophenol 46.4 10.0-155 02/26/2024 16:24 WG2233144 (S) p-Terphenyl-d14 64.6 10.0-128 02/26/2024 16:24 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 8 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 8 of 52 SAMPLE RESULTS - 02 L1707788 MW-02 Collected date/time: 02/19/24 16:25 Metals (ICPMS) by Method 6020B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Antimony U 1.03 4.00 1 02/26/2024 17:12 WG2231829 Arsenic U 0.180 2.00 1 02/26/2024 17:12 WG2231829 Barium 33.2 0.381 2.00 1 02/26/2024 17:12 WG2231829 Beryllium U 0.190 2.00 1 02/26/2024 17:12 WG2231829 Cadmium U 0.150 1.00 1 02/26/2024 17:12 WG2231829 Chromium U 1.24 2.00 1 02/26/2024 17:12 WG2231829 Copper U 1.51 5.00 1 02/26/2024 17:12 WG2231829 Cobalt 0.556 J 0.0596 2.00 1 02/26/2024 17:12 WG2231829 Lead U 0.849 2.00 1 02/26/2024 17:12 WG2231829 Manganese 65.1 0.704 5.00 1 02/26/2024 17:12 WG2231829 Nickel 1.06 J 0.816 2.00 1 02/26/2024 17:12 WG2231829 Selenium U 0.300 2.00 1 02/26/2024 17:12 WG2231829 Silver U 0.0700 2.00 1 02/26/2024 17:12 WG2231829 Thallium U 0.121 2.00 1 02/26/2024 17:12 WG2231829 Vanadium 1.10 J 0.664 5.00 1 02/26/2024 17:12 WG2231829 Zinc U 3.02 25.0 1 02/26/2024 17:12 WG2231829 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 02/23/2024 15:04 WG2232457 Acrolein U J4 2.54 50.0 1 02/23/2024 15:04 WG2232457 Acrylonitrile U 0.671 10.0 1 02/29/2024 01:52 WG2235111 Benzene U 0.0941 1.00 1 02/23/2024 15:04 WG2232457 Bromobenzene U 0.118 1.00 1 02/23/2024 15:04 WG2232457 Bromodichloromethane U 0.136 1.00 1 02/23/2024 15:04 WG2232457 Bromoform U 0.129 1.00 1 02/23/2024 15:04 WG2232457 Bromomethane U 0.605 5.00 1 02/23/2024 15:04 WG2232457 n-Butylbenzene U 0.157 1.00 1 02/23/2024 15:04 WG2232457 sec-Butylbenzene U 0.125 1.00 1 02/23/2024 15:04 WG2232457 tert-Butylbenzene U 0.127 1.00 1 02/23/2024 15:04 WG2232457 Carbon tetrachloride U 0.128 1.00 1 02/23/2024 15:04 WG2232457 Chlorobenzene U 0.116 1.00 1 02/23/2024 15:04 WG2232457 Chlorodibromomethane U 0.140 1.00 1 02/23/2024 15:04 WG2232457 Chloroethane U 0.192 5.00 1 02/23/2024 15:04 WG2232457 Chloroform U 0.111 5.00 1 02/23/2024 15:04 WG2232457 Chloromethane U 0.960 2.50 1 02/29/2024 01:52 WG2235111 2-Chlorotoluene U 0.106 1.00 1 02/23/2024 15:04 WG2232457 4-Chlorotoluene U 0.114 1.00 1 02/23/2024 15:04 WG2232457 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/23/2024 15:04 WG2232457 1,2-Dibromoethane U 0.126 1.00 1 02/23/2024 15:04 WG2232457 Dibromomethane U 0.122 1.00 1 02/23/2024 15:04 WG2232457 1,2-Dichlorobenzene U 0.107 1.00 1 02/23/2024 15:04 WG2232457 1,3-Dichlorobenzene U 0.110 1.00 1 02/23/2024 15:04 WG2232457 1,4-Dichlorobenzene U 0.120 1.00 1 02/23/2024 15:04 WG2232457 Dichlorodifluoromethane U 0.374 5.00 1 02/23/2024 15:04 WG2232457 1,1-Dichloroethane U 0.100 1.00 1 02/23/2024 15:04 WG2232457 1,2-Dichloroethane U 0.0819 1.00 1 02/23/2024 15:04 WG2232457 1,1-Dichloroethene U 0.188 1.00 1 02/23/2024 15:04 WG2232457 cis-1,2-Dichloroethene U 0.126 1.00 1 02/23/2024 15:04 WG2232457 trans-1,2-Dichloroethene U 0.149 1.00 1 02/23/2024 15:04 WG2232457 1,2-Dichloropropane U 0.149 1.00 1 02/29/2024 01:52 WG2235111 1,1-Dichloropropene U 0.142 1.00 1 02/23/2024 15:04 WG2232457 1,3-Dichloropropane U 0.110 1.00 1 02/23/2024 15:04 WG2232457 cis-1,3-Dichloropropene U 0.111 1.00 1 02/23/2024 15:04 WG2232457 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 9 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 9 of 52 SAMPLE RESULTS - 02 L1707788 MW-02 Collected date/time: 02/19/24 16:25 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time trans-1,3-Dichloropropene U 0.118 1.00 1 02/23/2024 15:04 WG2232457 2,2-Dichloropropane U 0.161 1.00 1 02/23/2024 15:04 WG2232457 Di-isopropyl ether U 0.105 1.00 1 02/29/2024 01:52 WG2235111 Ethylbenzene U 0.137 1.00 1 02/23/2024 15:04 WG2232457 Hexachloro-1,3-butadiene U 0.337 1.00 1 02/23/2024 15:04 WG2232457 Isopropylbenzene U 0.105 1.00 1 02/23/2024 15:04 WG2232457 p-Isopropyltoluene U 0.120 1.00 1 02/23/2024 15:04 WG2232457 2-Butanone (MEK)U 1.19 10.0 1 02/23/2024 15:04 WG2232457 Methylene Chloride U 0.430 5.00 1 02/23/2024 15:04 WG2232457 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/23/2024 15:04 WG2232457 Methyl tert-butyl ether U 0.101 1.00 1 02/23/2024 15:04 WG2232457 Naphthalene U 1.00 5.00 1 02/29/2024 01:52 WG2235111 n-Propylbenzene U 0.0993 1.00 1 02/23/2024 15:04 WG2232457 Styrene U 0.118 1.00 1 02/29/2024 01:52 WG2235111 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/23/2024 15:04 WG2232457 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/23/2024 15:04 WG2232457 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 02/23/2024 15:04 WG2232457 Tetrachloroethene U 0.300 1.00 1 02/23/2024 15:04 WG2232457 Toluene U 0.278 1.00 1 02/23/2024 15:04 WG2232457 1,2,3-Trichlorobenzene U 0.230 1.00 1 02/23/2024 15:04 WG2232457 1,2,4-Trichlorobenzene U 0.481 1.00 1 02/23/2024 15:04 WG2232457 1,1,1-Trichloroethane U J4 0.149 1.00 1 02/23/2024 15:04 WG2232457 1,1,2-Trichloroethane U 0.158 1.00 1 02/23/2024 15:04 WG2232457 Trichloroethene U 0.190 1.00 1 02/23/2024 15:04 WG2232457 Trichlorofluoromethane U 0.160 5.00 1 02/23/2024 15:04 WG2232457 1,2,3-Trichloropropane U 0.237 2.50 1 02/23/2024 15:04 WG2232457 1,2,4-Trimethylbenzene U 0.322 1.00 1 02/23/2024 15:04 WG2232457 1,2,3-Trimethylbenzene U 0.104 1.00 1 02/23/2024 15:04 WG2232457 1,3,5-Trimethylbenzene U 0.104 1.00 1 02/23/2024 15:04 WG2232457 Vinyl chloride U 0.234 1.00 1 02/23/2024 15:04 WG2232457 Xylenes, Total U 0.174 3.00 1 02/23/2024 15:04 WG2232457 (S) Toluene-d8 106 80.0-120 02/23/2024 15:04 WG2232457 (S) Toluene-d8 104 80.0-120 02/29/2024 01:52 WG2235111 (S) 4-Bromofluorobenzene 91.8 77.0-126 02/23/2024 15:04 WG2232457 (S) 4-Bromofluorobenzene 93.8 77.0-126 02/29/2024 01:52 WG2235111 (S) 1,2-Dichloroethane-d4 129 70.0-130 02/23/2024 15:04 WG2232457 (S) 1,2-Dichloroethane-d4 95.8 70.0-130 02/29/2024 01:52 WG2235111 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,4-Dioxane 0.0660 B J 0.0447 0.400 1 02/23/2024 21:54 WG2230421 Acenaphthene 0.0925 J 0.0886 1.00 1 02/26/2024 16:46 WG2233144 Acenaphthylene U 0.0921 1.00 1 02/26/2024 16:46 WG2233144 Anthracene U 0.0804 1.00 1 02/26/2024 16:46 WG2233144 Benzidine U J3 J4 3.74 10.0 1 02/26/2024 16:46 WG2233144 Benzo(a)anthracene U 0.199 1.00 1 02/26/2024 16:46 WG2233144 Benzo(b)fluoranthene U 0.130 1.00 1 02/26/2024 16:46 WG2233144 Benzo(k)fluoranthene U 0.120 1.00 1 02/26/2024 16:46 WG2233144 Benzo(g,h,i)perylene U 0.121 1.00 1 02/26/2024 16:46 WG2233144 Benzo(a)pyrene U 0.0381 1.00 1 02/26/2024 16:46 WG2233144 Bis(2-chlorethoxy)methane U 0.116 10.0 1 02/26/2024 16:46 WG2233144 Bis(2-chloroethyl)ether U 0.137 10.0 1 02/26/2024 16:46 WG2233144 2,2-Oxybis(1-Chloropropane)U 0.210 10.0 1 02/26/2024 16:46 WG2233144 4-Bromophenyl-phenylether U 0.0877 10.0 1 02/26/2024 16:46 WG2233144 2-Chloronaphthalene U 0.0648 1.00 1 02/26/2024 16:46 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 10 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 10 of 52 SAMPLE RESULTS - 02 L1707788 MW-02 Collected date/time: 02/19/24 16:25 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 4-Chlorophenyl-phenylether U 0.0926 10.0 1 02/26/2024 16:46 WG2233144 Chrysene U 0.130 1.00 1 02/26/2024 16:46 WG2233144 Dibenz(a,h)anthracene U 0.0644 1.00 1 02/26/2024 16:46 WG2233144 1,2-Dichlorobenzene U 0.0713 10.0 1 02/26/2024 16:46 WG2233144 1,3-Dichlorobenzene U 0.132 10.0 1 02/26/2024 16:46 WG2233144 1,4-Dichlorobenzene U 0.0942 10.0 1 02/26/2024 16:46 WG2233144 3,3-Dichlorobenzidine U 0.212 10.0 1 02/26/2024 16:46 WG2233144 2,4-Dinitrotoluene U 0.0983 10.0 1 02/26/2024 16:46 WG2233144 2,6-Dinitrotoluene U 0.250 10.0 1 02/26/2024 16:46 WG2233144 Fluoranthene U 0.102 1.00 1 02/26/2024 16:46 WG2233144 Fluorene U 0.0844 1.00 1 02/26/2024 16:46 WG2233144 Hexachlorobenzene U 0.0755 1.00 1 02/26/2024 16:46 WG2233144 Hexachloro-1,3-butadiene U 0.0968 10.0 1 02/26/2024 16:46 WG2233144 Hexachlorocyclopentadiene U 0.0598 10.0 1 02/26/2024 16:46 WG2233144 Hexachloroethane U 0.127 10.0 1 02/26/2024 16:46 WG2233144 Indeno(1,2,3-cd)pyrene U 0.279 1.00 1 02/26/2024 16:46 WG2233144 Isophorone U 0.143 10.0 1 02/26/2024 16:46 WG2233144 Naphthalene 2.24 0.159 1.00 1 02/26/2024 16:46 WG2233144 Nitrobenzene U 0.297 10.0 1 02/26/2024 16:46 WG2233144 n-Nitrosodimethylamine U 0.998 10.0 1 02/26/2024 16:46 WG2233144 n-Nitrosodiphenylamine U 2.37 10.0 1 02/26/2024 16:46 WG2233144 n-Nitrosodi-n-propylamine U 0.261 10.0 1 02/26/2024 16:46 WG2233144 Phenanthrene U 0.112 1.00 1 02/26/2024 16:46 WG2233144 Benzylbutyl phthalate U 0.765 3.00 1 02/26/2024 16:46 WG2233144 Bis(2-ethylhexyl)phthalate U 0.895 3.00 1 02/26/2024 16:46 WG2233144 Di-n-butyl phthalate U 0.453 3.00 1 02/26/2024 16:46 WG2233144 Diethyl phthalate U 0.287 3.00 1 02/26/2024 16:46 WG2233144 Dimethyl phthalate U 0.260 3.00 1 02/26/2024 16:46 WG2233144 Di-n-octyl phthalate U 0.932 3.00 1 02/26/2024 16:46 WG2233144 Pyrene U 0.107 1.00 1 02/26/2024 16:46 WG2233144 1,2,4-Trichlorobenzene U 0.0698 10.0 1 02/26/2024 16:46 WG2233144 4-Chloro-3-methylphenol U 0.131 10.0 1 02/26/2024 16:46 WG2233144 2-Chlorophenol U 0.133 10.0 1 02/26/2024 16:46 WG2233144 2,4-Dichlorophenol U 0.102 10.0 1 02/26/2024 16:46 WG2233144 2,4-Dimethylphenol U 0.0636 10.0 1 02/26/2024 16:46 WG2233144 4,6-Dinitro-2-methylphenol U 1.12 10.0 1 02/26/2024 16:46 WG2233144 2,4-Dinitrophenol U 5.93 10.0 1 02/26/2024 16:46 WG2233144 2-Nitrophenol U 0.117 10.0 1 02/26/2024 16:46 WG2233144 4-Nitrophenol U 0.143 10.0 1 02/26/2024 16:46 WG2233144 Pentachlorophenol U 0.313 10.0 1 02/26/2024 16:46 WG2233144 Phenol U 4.33 10.0 1 02/26/2024 16:46 WG2233144 2,4,6-Trichlorophenol U 0.100 10.0 1 02/26/2024 16:46 WG2233144 (S) Nitrobenzene-d5 71.4 10.0-120 02/23/2024 21:54 WG2230421 (S) 2-Fluorophenol 22.0 10.0-120 02/26/2024 16:46 WG2233144 (S) Phenol-d5 14.6 10.0-120 02/26/2024 16:46 WG2233144 (S) Nitrobenzene-d5 53.1 10.0-127 02/26/2024 16:46 WG2233144 (S) 2-Fluorobiphenyl 59.5 10.0-130 02/26/2024 16:46 WG2233144 (S) 2,4,6-Tribromophenol 50.3 10.0-155 02/26/2024 16:46 WG2233144 (S) p-Terphenyl-d14 53.1 10.0-128 02/26/2024 16:46 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 11 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 11 of 52 SAMPLE RESULTS - 03 L1707788 MW-03 Collected date/time: 02/19/24 11:25 Metals (ICPMS) by Method 6020B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Antimony U 1.03 4.00 1 02/26/2024 17:15 WG2231829 Arsenic U 0.180 2.00 1 02/26/2024 17:15 WG2231829 Barium 94.8 0.381 2.00 1 02/26/2024 17:15 WG2231829 Beryllium U 0.190 2.00 1 02/26/2024 17:15 WG2231829 Cadmium U 0.150 1.00 1 02/26/2024 17:15 WG2231829 Chromium U 1.24 2.00 1 02/26/2024 17:15 WG2231829 Copper U 1.51 5.00 1 02/26/2024 17:15 WG2231829 Cobalt 0.316 J 0.0596 2.00 1 02/26/2024 17:15 WG2231829 Lead U 0.849 2.00 1 02/26/2024 17:15 WG2231829 Manganese 24.8 0.704 5.00 1 02/26/2024 17:15 WG2231829 Nickel U 0.816 2.00 1 02/26/2024 17:15 WG2231829 Selenium U 0.300 2.00 1 02/26/2024 17:15 WG2231829 Silver U 0.0700 2.00 1 02/26/2024 17:15 WG2231829 Thallium U 0.121 2.00 1 02/26/2024 17:15 WG2231829 Vanadium 1.37 J 0.664 5.00 1 02/26/2024 17:15 WG2231829 Zinc U 3.02 25.0 1 02/26/2024 17:15 WG2231829 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 02/23/2024 15:23 WG2232457 Acrolein U J4 2.54 50.0 1 02/23/2024 15:23 WG2232457 Acrylonitrile U 0.671 10.0 1 02/29/2024 02:14 WG2235111 Benzene U 0.0941 1.00 1 02/23/2024 15:23 WG2232457 Bromobenzene U 0.118 1.00 1 02/23/2024 15:23 WG2232457 Bromodichloromethane U 0.136 1.00 1 02/23/2024 15:23 WG2232457 Bromoform U 0.129 1.00 1 02/23/2024 15:23 WG2232457 Bromomethane U 0.605 5.00 1 02/23/2024 15:23 WG2232457 n-Butylbenzene U 0.157 1.00 1 02/23/2024 15:23 WG2232457 sec-Butylbenzene U 0.125 1.00 1 02/23/2024 15:23 WG2232457 tert-Butylbenzene U 0.127 1.00 1 02/23/2024 15:23 WG2232457 Carbon tetrachloride U 0.128 1.00 1 02/23/2024 15:23 WG2232457 Chlorobenzene U 0.116 1.00 1 02/23/2024 15:23 WG2232457 Chlorodibromomethane U 0.140 1.00 1 02/23/2024 15:23 WG2232457 Chloroethane U 0.192 5.00 1 02/23/2024 15:23 WG2232457 Chloroform U 0.111 5.00 1 02/23/2024 15:23 WG2232457 Chloromethane U 0.960 2.50 1 02/29/2024 02:14 WG2235111 2-Chlorotoluene U 0.106 1.00 1 02/23/2024 15:23 WG2232457 4-Chlorotoluene U 0.114 1.00 1 02/23/2024 15:23 WG2232457 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/23/2024 15:23 WG2232457 1,2-Dibromoethane U 0.126 1.00 1 02/23/2024 15:23 WG2232457 Dibromomethane U 0.122 1.00 1 02/23/2024 15:23 WG2232457 1,2-Dichlorobenzene U 0.107 1.00 1 02/23/2024 15:23 WG2232457 1,3-Dichlorobenzene U 0.110 1.00 1 02/23/2024 15:23 WG2232457 1,4-Dichlorobenzene U 0.120 1.00 1 02/23/2024 15:23 WG2232457 Dichlorodifluoromethane U 0.374 5.00 1 02/23/2024 15:23 WG2232457 1,1-Dichloroethane U 0.100 1.00 1 02/23/2024 15:23 WG2232457 1,2-Dichloroethane U 0.0819 1.00 1 02/23/2024 15:23 WG2232457 1,1-Dichloroethene U 0.188 1.00 1 02/23/2024 15:23 WG2232457 cis-1,2-Dichloroethene U 0.126 1.00 1 02/23/2024 15:23 WG2232457 trans-1,2-Dichloroethene U 0.149 1.00 1 02/23/2024 15:23 WG2232457 1,2-Dichloropropane U 0.149 1.00 1 02/29/2024 02:14 WG2235111 1,1-Dichloropropene U 0.142 1.00 1 02/23/2024 15:23 WG2232457 1,3-Dichloropropane U 0.110 1.00 1 02/23/2024 15:23 WG2232457 cis-1,3-Dichloropropene U 0.111 1.00 1 02/23/2024 15:23 WG2232457 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 12 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 12 of 52 SAMPLE RESULTS - 03 L1707788 MW-03 Collected date/time: 02/19/24 11:25 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time trans-1,3-Dichloropropene U 0.118 1.00 1 02/23/2024 15:23 WG2232457 2,2-Dichloropropane U 0.161 1.00 1 02/23/2024 15:23 WG2232457 Di-isopropyl ether U 0.105 1.00 1 02/29/2024 02:14 WG2235111 Ethylbenzene U 0.137 1.00 1 02/23/2024 15:23 WG2232457 Hexachloro-1,3-butadiene U 0.337 1.00 1 02/23/2024 15:23 WG2232457 Isopropylbenzene U 0.105 1.00 1 02/23/2024 15:23 WG2232457 p-Isopropyltoluene U 0.120 1.00 1 02/23/2024 15:23 WG2232457 2-Butanone (MEK)U 1.19 10.0 1 02/23/2024 15:23 WG2232457 Methylene Chloride U 0.430 5.00 1 02/23/2024 15:23 WG2232457 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/23/2024 15:23 WG2232457 Methyl tert-butyl ether U 0.101 1.00 1 02/23/2024 15:23 WG2232457 Naphthalene U 1.00 5.00 1 02/29/2024 02:14 WG2235111 n-Propylbenzene U 0.0993 1.00 1 02/23/2024 15:23 WG2232457 Styrene U 0.118 1.00 1 02/29/2024 02:14 WG2235111 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/23/2024 15:23 WG2232457 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/23/2024 15:23 WG2232457 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 02/23/2024 15:23 WG2232457 Tetrachloroethene U 0.300 1.00 1 02/23/2024 15:23 WG2232457 Toluene U 0.278 1.00 1 02/23/2024 15:23 WG2232457 1,2,3-Trichlorobenzene U 0.230 1.00 1 02/23/2024 15:23 WG2232457 1,2,4-Trichlorobenzene U 0.481 1.00 1 02/23/2024 15:23 WG2232457 1,1,1-Trichloroethane U J4 0.149 1.00 1 02/23/2024 15:23 WG2232457 1,1,2-Trichloroethane U 0.158 1.00 1 02/23/2024 15:23 WG2232457 Trichloroethene U 0.190 1.00 1 02/23/2024 15:23 WG2232457 Trichlorofluoromethane U 0.160 5.00 1 02/23/2024 15:23 WG2232457 1,2,3-Trichloropropane U 0.237 2.50 1 02/23/2024 15:23 WG2232457 1,2,4-Trimethylbenzene U 0.322 1.00 1 02/23/2024 15:23 WG2232457 1,2,3-Trimethylbenzene U 0.104 1.00 1 02/23/2024 15:23 WG2232457 1,3,5-Trimethylbenzene U 0.104 1.00 1 02/23/2024 15:23 WG2232457 Vinyl chloride U 0.234 1.00 1 02/23/2024 15:23 WG2232457 Xylenes, Total U 0.174 3.00 1 02/23/2024 15:23 WG2232457 (S) Toluene-d8 103 80.0-120 02/23/2024 15:23 WG2232457 (S) Toluene-d8 105 80.0-120 02/29/2024 02:14 WG2235111 (S) 4-Bromofluorobenzene 98.8 77.0-126 02/23/2024 15:23 WG2232457 (S) 4-Bromofluorobenzene 95.7 77.0-126 02/29/2024 02:14 WG2235111 (S) 1,2-Dichloroethane-d4 133 J1 70.0-130 02/23/2024 15:23 WG2232457 (S) 1,2-Dichloroethane-d4 96.4 70.0-130 02/29/2024 02:14 WG2235111 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,4-Dioxane 0.117 B J 0.0447 0.400 1 02/23/2024 22:13 WG2230421 Acenaphthene U 0.0886 1.00 1 02/26/2024 17:08 WG2233144 Acenaphthylene U 0.0921 1.00 1 02/26/2024 17:08 WG2233144 Anthracene U 0.0804 1.00 1 02/26/2024 17:08 WG2233144 Benzidine U J3 J4 3.74 10.0 1 02/26/2024 17:08 WG2233144 Benzo(a)anthracene U 0.199 1.00 1 02/26/2024 17:08 WG2233144 Benzo(b)fluoranthene U 0.130 1.00 1 02/26/2024 17:08 WG2233144 Benzo(k)fluoranthene U 0.120 1.00 1 02/26/2024 17:08 WG2233144 Benzo(g,h,i)perylene U 0.121 1.00 1 02/26/2024 17:08 WG2233144 Benzo(a)pyrene U 0.0381 1.00 1 02/26/2024 17:08 WG2233144 Bis(2-chlorethoxy)methane U 0.116 10.0 1 02/26/2024 17:08 WG2233144 Bis(2-chloroethyl)ether U 0.137 10.0 1 02/26/2024 17:08 WG2233144 2,2-Oxybis(1-Chloropropane)U 0.210 10.0 1 02/26/2024 17:08 WG2233144 4-Bromophenyl-phenylether U 0.0877 10.0 1 02/26/2024 17:08 WG2233144 2-Chloronaphthalene U 0.0648 1.00 1 02/26/2024 17:08 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 13 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 13 of 52 SAMPLE RESULTS - 03 L1707788 MW-03 Collected date/time: 02/19/24 11:25 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 4-Chlorophenyl-phenylether U 0.0926 10.0 1 02/26/2024 17:08 WG2233144 Chrysene U 0.130 1.00 1 02/26/2024 17:08 WG2233144 Dibenz(a,h)anthracene U 0.0644 1.00 1 02/26/2024 17:08 WG2233144 1,2-Dichlorobenzene U 0.0713 10.0 1 02/26/2024 17:08 WG2233144 1,3-Dichlorobenzene U 0.132 10.0 1 02/26/2024 17:08 WG2233144 1,4-Dichlorobenzene U 0.0942 10.0 1 02/26/2024 17:08 WG2233144 3,3-Dichlorobenzidine U 0.212 10.0 1 02/26/2024 17:08 WG2233144 2,4-Dinitrotoluene U 0.0983 10.0 1 02/26/2024 17:08 WG2233144 2,6-Dinitrotoluene U 0.250 10.0 1 02/26/2024 17:08 WG2233144 Fluoranthene U 0.102 1.00 1 02/26/2024 17:08 WG2233144 Fluorene U 0.0844 1.00 1 02/26/2024 17:08 WG2233144 Hexachlorobenzene U 0.0755 1.00 1 02/26/2024 17:08 WG2233144 Hexachloro-1,3-butadiene U 0.0968 10.0 1 02/26/2024 17:08 WG2233144 Hexachlorocyclopentadiene U 0.0598 10.0 1 02/26/2024 17:08 WG2233144 Hexachloroethane U 0.127 10.0 1 02/26/2024 17:08 WG2233144 Indeno(1,2,3-cd)pyrene U 0.279 1.00 1 02/26/2024 17:08 WG2233144 Isophorone U 0.143 10.0 1 02/26/2024 17:08 WG2233144 Naphthalene U 0.159 1.00 1 02/26/2024 17:08 WG2233144 Nitrobenzene U 0.297 10.0 1 02/26/2024 17:08 WG2233144 n-Nitrosodimethylamine U 0.998 10.0 1 02/26/2024 17:08 WG2233144 n-Nitrosodiphenylamine U 2.37 10.0 1 02/26/2024 17:08 WG2233144 n-Nitrosodi-n-propylamine U 0.261 10.0 1 02/26/2024 17:08 WG2233144 Phenanthrene U 0.112 1.00 1 02/26/2024 17:08 WG2233144 Benzylbutyl phthalate U 0.765 3.00 1 02/26/2024 17:08 WG2233144 Bis(2-ethylhexyl)phthalate U 0.895 3.00 1 02/26/2024 17:08 WG2233144 Di-n-butyl phthalate U 0.453 3.00 1 02/26/2024 17:08 WG2233144 Diethyl phthalate U 0.287 3.00 1 02/26/2024 17:08 WG2233144 Dimethyl phthalate U 0.260 3.00 1 02/26/2024 17:08 WG2233144 Di-n-octyl phthalate U 0.932 3.00 1 02/26/2024 17:08 WG2233144 Pyrene U 0.107 1.00 1 02/26/2024 17:08 WG2233144 1,2,4-Trichlorobenzene U 0.0698 10.0 1 02/26/2024 17:08 WG2233144 4-Chloro-3-methylphenol U 0.131 10.0 1 02/26/2024 17:08 WG2233144 2-Chlorophenol U 0.133 10.0 1 02/26/2024 17:08 WG2233144 2,4-Dichlorophenol U 0.102 10.0 1 02/26/2024 17:08 WG2233144 2,4-Dimethylphenol U 0.0636 10.0 1 02/26/2024 17:08 WG2233144 4,6-Dinitro-2-methylphenol U 1.12 10.0 1 02/26/2024 17:08 WG2233144 2,4-Dinitrophenol U 5.93 10.0 1 02/26/2024 17:08 WG2233144 2-Nitrophenol U 0.117 10.0 1 02/26/2024 17:08 WG2233144 4-Nitrophenol U 0.143 10.0 1 02/26/2024 17:08 WG2233144 Pentachlorophenol U 0.313 10.0 1 02/26/2024 17:08 WG2233144 Phenol U 4.33 10.0 1 02/26/2024 17:08 WG2233144 2,4,6-Trichlorophenol U 0.100 10.0 1 02/26/2024 17:08 WG2233144 (S) Nitrobenzene-d5 69.2 10.0-120 02/23/2024 22:13 WG2230421 (S) 2-Fluorophenol 29.1 10.0-120 02/26/2024 17:08 WG2233144 (S) Phenol-d5 19.3 10.0-120 02/26/2024 17:08 WG2233144 (S) Nitrobenzene-d5 53.8 10.0-127 02/26/2024 17:08 WG2233144 (S) 2-Fluorobiphenyl 54.6 10.0-130 02/26/2024 17:08 WG2233144 (S) 2,4,6-Tribromophenol 56.5 10.0-155 02/26/2024 17:08 WG2233144 (S) p-Terphenyl-d14 68.6 10.0-128 02/26/2024 17:08 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 14 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 14 of 52 SAMPLE RESULTS - 04 L1707788 MW-04 Collected date/time: 02/19/24 12:30 Metals (ICPMS) by Method 6020B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Antimony U 1.03 4.00 1 02/26/2024 17:18 WG2231829 Arsenic U 0.180 2.00 1 02/26/2024 17:18 WG2231829 Barium 15.3 0.381 2.00 1 02/26/2024 17:18 WG2231829 Beryllium U 0.190 2.00 1 02/26/2024 17:18 WG2231829 Cadmium U 0.150 1.00 1 02/26/2024 17:18 WG2231829 Chromium U 1.24 2.00 1 02/26/2024 17:18 WG2231829 Copper U 1.51 5.00 1 02/26/2024 17:18 WG2231829 Cobalt 0.342 J 0.0596 2.00 1 02/26/2024 17:18 WG2231829 Lead U 0.849 2.00 1 02/26/2024 17:18 WG2231829 Manganese 19.3 0.704 5.00 1 02/26/2024 17:18 WG2231829 Nickel 1.15 J 0.816 2.00 1 02/26/2024 17:18 WG2231829 Selenium U 0.300 2.00 1 02/26/2024 17:18 WG2231829 Silver U 0.0700 2.00 1 02/26/2024 17:18 WG2231829 Thallium U 0.121 2.00 1 02/26/2024 17:18 WG2231829 Vanadium U 0.664 5.00 1 02/26/2024 17:18 WG2231829 Zinc U 3.02 25.0 1 02/26/2024 17:18 WG2231829 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 02/23/2024 15:41 WG2232457 Acrolein U J4 2.54 50.0 1 02/23/2024 15:41 WG2232457 Acrylonitrile U 0.671 10.0 1 02/29/2024 02:36 WG2235111 Benzene U 0.0941 1.00 1 02/23/2024 15:41 WG2232457 Bromobenzene U 0.118 1.00 1 02/23/2024 15:41 WG2232457 Bromodichloromethane U 0.136 1.00 1 02/23/2024 15:41 WG2232457 Bromoform U 0.129 1.00 1 02/23/2024 15:41 WG2232457 Bromomethane U 0.605 5.00 1 02/23/2024 15:41 WG2232457 n-Butylbenzene U 0.157 1.00 1 02/23/2024 15:41 WG2232457 sec-Butylbenzene U 0.125 1.00 1 02/23/2024 15:41 WG2232457 tert-Butylbenzene U 0.127 1.00 1 02/23/2024 15:41 WG2232457 Carbon tetrachloride U 0.128 1.00 1 02/23/2024 15:41 WG2232457 Chlorobenzene U 0.116 1.00 1 02/23/2024 15:41 WG2232457 Chlorodibromomethane U 0.140 1.00 1 02/23/2024 15:41 WG2232457 Chloroethane U 0.192 5.00 1 02/23/2024 15:41 WG2232457 Chloroform U 0.111 5.00 1 02/23/2024 15:41 WG2232457 Chloromethane U 0.960 2.50 1 02/29/2024 02:36 WG2235111 2-Chlorotoluene U 0.106 1.00 1 02/23/2024 15:41 WG2232457 4-Chlorotoluene U 0.114 1.00 1 02/23/2024 15:41 WG2232457 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/23/2024 15:41 WG2232457 1,2-Dibromoethane U 0.126 1.00 1 02/23/2024 15:41 WG2232457 Dibromomethane U 0.122 1.00 1 02/23/2024 15:41 WG2232457 1,2-Dichlorobenzene U 0.107 1.00 1 02/23/2024 15:41 WG2232457 1,3-Dichlorobenzene U 0.110 1.00 1 02/23/2024 15:41 WG2232457 1,4-Dichlorobenzene U 0.120 1.00 1 02/23/2024 15:41 WG2232457 Dichlorodifluoromethane U 0.374 5.00 1 02/23/2024 15:41 WG2232457 1,1-Dichloroethane U 0.100 1.00 1 02/23/2024 15:41 WG2232457 1,2-Dichloroethane U 0.0819 1.00 1 02/23/2024 15:41 WG2232457 1,1-Dichloroethene U 0.188 1.00 1 02/23/2024 15:41 WG2232457 cis-1,2-Dichloroethene U 0.126 1.00 1 02/23/2024 15:41 WG2232457 trans-1,2-Dichloroethene U 0.149 1.00 1 02/23/2024 15:41 WG2232457 1,2-Dichloropropane U 0.149 1.00 1 02/29/2024 02:36 WG2235111 1,1-Dichloropropene U 0.142 1.00 1 02/23/2024 15:41 WG2232457 1,3-Dichloropropane U 0.110 1.00 1 02/23/2024 15:41 WG2232457 cis-1,3-Dichloropropene U 0.111 1.00 1 02/23/2024 15:41 WG2232457 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 15 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 15 of 52 SAMPLE RESULTS - 04 L1707788 MW-04 Collected date/time: 02/19/24 12:30 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time trans-1,3-Dichloropropene U 0.118 1.00 1 02/23/2024 15:41 WG2232457 2,2-Dichloropropane U 0.161 1.00 1 02/23/2024 15:41 WG2232457 Di-isopropyl ether U 0.105 1.00 1 02/29/2024 02:36 WG2235111 Ethylbenzene U 0.137 1.00 1 02/23/2024 15:41 WG2232457 Hexachloro-1,3-butadiene U 0.337 1.00 1 02/23/2024 15:41 WG2232457 Isopropylbenzene U 0.105 1.00 1 02/23/2024 15:41 WG2232457 p-Isopropyltoluene U 0.120 1.00 1 02/23/2024 15:41 WG2232457 2-Butanone (MEK)U 1.19 10.0 1 02/23/2024 15:41 WG2232457 Methylene Chloride U 0.430 5.00 1 02/23/2024 15:41 WG2232457 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/23/2024 15:41 WG2232457 Methyl tert-butyl ether U 0.101 1.00 1 02/23/2024 15:41 WG2232457 Naphthalene U 1.00 5.00 1 02/29/2024 02:36 WG2235111 n-Propylbenzene U 0.0993 1.00 1 02/23/2024 15:41 WG2232457 Styrene U 0.118 1.00 1 02/29/2024 02:36 WG2235111 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/23/2024 15:41 WG2232457 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/23/2024 15:41 WG2232457 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 02/23/2024 15:41 WG2232457 Tetrachloroethene U 0.300 1.00 1 02/23/2024 15:41 WG2232457 Toluene U 0.278 1.00 1 02/23/2024 15:41 WG2232457 1,2,3-Trichlorobenzene U 0.230 1.00 1 02/23/2024 15:41 WG2232457 1,2,4-Trichlorobenzene U 0.481 1.00 1 02/23/2024 15:41 WG2232457 1,1,1-Trichloroethane U J4 0.149 1.00 1 02/23/2024 15:41 WG2232457 1,1,2-Trichloroethane U 0.158 1.00 1 02/23/2024 15:41 WG2232457 Trichloroethene U 0.190 1.00 1 02/23/2024 15:41 WG2232457 Trichlorofluoromethane U 0.160 5.00 1 02/23/2024 15:41 WG2232457 1,2,3-Trichloropropane U 0.237 2.50 1 02/23/2024 15:41 WG2232457 1,2,4-Trimethylbenzene U 0.322 1.00 1 02/23/2024 15:41 WG2232457 1,2,3-Trimethylbenzene U 0.104 1.00 1 02/23/2024 15:41 WG2232457 1,3,5-Trimethylbenzene U 0.104 1.00 1 02/23/2024 15:41 WG2232457 Vinyl chloride U 0.234 1.00 1 02/23/2024 15:41 WG2232457 Xylenes, Total U 0.174 3.00 1 02/23/2024 15:41 WG2232457 (S) Toluene-d8 105 80.0-120 02/23/2024 15:41 WG2232457 (S) Toluene-d8 105 80.0-120 02/29/2024 02:36 WG2235111 (S) 4-Bromofluorobenzene 93.9 77.0-126 02/23/2024 15:41 WG2232457 (S) 4-Bromofluorobenzene 94.0 77.0-126 02/29/2024 02:36 WG2235111 (S) 1,2-Dichloroethane-d4 126 70.0-130 02/23/2024 15:41 WG2232457 (S) 1,2-Dichloroethane-d4 101 70.0-130 02/29/2024 02:36 WG2235111 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,4-Dioxane 0.0536 B J 0.0447 0.400 1 02/23/2024 22:32 WG2230421 Acenaphthene U 0.0886 1.00 1 02/26/2024 17:29 WG2233144 Acenaphthylene U 0.0921 1.00 1 02/26/2024 17:29 WG2233144 Anthracene U 0.0804 1.00 1 02/26/2024 17:29 WG2233144 Benzidine U J3 J4 3.74 10.0 1 02/26/2024 17:29 WG2233144 Benzo(a)anthracene U 0.199 1.00 1 02/26/2024 17:29 WG2233144 Benzo(b)fluoranthene U 0.130 1.00 1 02/26/2024 17:29 WG2233144 Benzo(k)fluoranthene U 0.120 1.00 1 02/26/2024 17:29 WG2233144 Benzo(g,h,i)perylene U 0.121 1.00 1 02/26/2024 17:29 WG2233144 Benzo(a)pyrene U 0.0381 1.00 1 02/26/2024 17:29 WG2233144 Bis(2-chlorethoxy)methane U 0.116 10.0 1 02/26/2024 17:29 WG2233144 Bis(2-chloroethyl)ether U 0.137 10.0 1 02/26/2024 17:29 WG2233144 2,2-Oxybis(1-Chloropropane)U 0.210 10.0 1 02/26/2024 17:29 WG2233144 4-Bromophenyl-phenylether U 0.0877 10.0 1 02/26/2024 17:29 WG2233144 2-Chloronaphthalene U 0.0648 1.00 1 02/26/2024 17:29 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 16 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 16 of 52 SAMPLE RESULTS - 04 L1707788 MW-04 Collected date/time: 02/19/24 12:30 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 4-Chlorophenyl-phenylether U 0.0926 10.0 1 02/26/2024 17:29 WG2233144 Chrysene U 0.130 1.00 1 02/26/2024 17:29 WG2233144 Dibenz(a,h)anthracene U 0.0644 1.00 1 02/26/2024 17:29 WG2233144 1,2-Dichlorobenzene U 0.0713 10.0 1 02/26/2024 17:29 WG2233144 1,3-Dichlorobenzene U 0.132 10.0 1 02/26/2024 17:29 WG2233144 1,4-Dichlorobenzene U 0.0942 10.0 1 02/26/2024 17:29 WG2233144 3,3-Dichlorobenzidine U 0.212 10.0 1 02/26/2024 17:29 WG2233144 2,4-Dinitrotoluene U 0.0983 10.0 1 02/26/2024 17:29 WG2233144 2,6-Dinitrotoluene U 0.250 10.0 1 02/26/2024 17:29 WG2233144 Fluoranthene U 0.102 1.00 1 02/26/2024 17:29 WG2233144 Fluorene U 0.0844 1.00 1 02/26/2024 17:29 WG2233144 Hexachlorobenzene U 0.0755 1.00 1 02/26/2024 17:29 WG2233144 Hexachloro-1,3-butadiene U 0.0968 10.0 1 02/26/2024 17:29 WG2233144 Hexachlorocyclopentadiene U 0.0598 10.0 1 02/26/2024 17:29 WG2233144 Hexachloroethane U 0.127 10.0 1 02/26/2024 17:29 WG2233144 Indeno(1,2,3-cd)pyrene U 0.279 1.00 1 02/26/2024 17:29 WG2233144 Isophorone U 0.143 10.0 1 02/26/2024 17:29 WG2233144 Naphthalene U 0.159 1.00 1 02/26/2024 17:29 WG2233144 Nitrobenzene U 0.297 10.0 1 02/26/2024 17:29 WG2233144 n-Nitrosodimethylamine U 0.998 10.0 1 02/26/2024 17:29 WG2233144 n-Nitrosodiphenylamine U 2.37 10.0 1 02/26/2024 17:29 WG2233144 n-Nitrosodi-n-propylamine U 0.261 10.0 1 02/26/2024 17:29 WG2233144 Phenanthrene U 0.112 1.00 1 02/26/2024 17:29 WG2233144 Benzylbutyl phthalate U 0.765 3.00 1 02/26/2024 17:29 WG2233144 Bis(2-ethylhexyl)phthalate U 0.895 3.00 1 02/26/2024 17:29 WG2233144 Di-n-butyl phthalate U 0.453 3.00 1 02/26/2024 17:29 WG2233144 Diethyl phthalate U 0.287 3.00 1 02/26/2024 17:29 WG2233144 Dimethyl phthalate U 0.260 3.00 1 02/26/2024 17:29 WG2233144 Di-n-octyl phthalate U 0.932 3.00 1 02/26/2024 17:29 WG2233144 Pyrene U 0.107 1.00 1 02/26/2024 17:29 WG2233144 1,2,4-Trichlorobenzene U 0.0698 10.0 1 02/26/2024 17:29 WG2233144 4-Chloro-3-methylphenol U 0.131 10.0 1 02/26/2024 17:29 WG2233144 2-Chlorophenol U 0.133 10.0 1 02/26/2024 17:29 WG2233144 2,4-Dichlorophenol U 0.102 10.0 1 02/26/2024 17:29 WG2233144 2,4-Dimethylphenol U 0.0636 10.0 1 02/26/2024 17:29 WG2233144 4,6-Dinitro-2-methylphenol U 1.12 10.0 1 02/26/2024 17:29 WG2233144 2,4-Dinitrophenol U 5.93 10.0 1 02/26/2024 17:29 WG2233144 2-Nitrophenol U 0.117 10.0 1 02/26/2024 17:29 WG2233144 4-Nitrophenol U 0.143 10.0 1 02/26/2024 17:29 WG2233144 Pentachlorophenol U 0.313 10.0 1 02/26/2024 17:29 WG2233144 Phenol U 4.33 10.0 1 02/26/2024 17:29 WG2233144 2,4,6-Trichlorophenol U 0.100 10.0 1 02/26/2024 17:29 WG2233144 (S) Nitrobenzene-d5 67.8 10.0-120 02/23/2024 22:32 WG2230421 (S) 2-Fluorophenol 31.8 10.0-120 02/26/2024 17:29 WG2233144 (S) Phenol-d5 19.1 10.0-120 02/26/2024 17:29 WG2233144 (S) Nitrobenzene-d5 57.8 10.0-127 02/26/2024 17:29 WG2233144 (S) 2-Fluorobiphenyl 60.8 10.0-130 02/26/2024 17:29 WG2233144 (S) 2,4,6-Tribromophenol 58.0 10.0-155 02/26/2024 17:29 WG2233144 (S) p-Terphenyl-d14 69.8 10.0-128 02/26/2024 17:29 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 17 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 17 of 52 SAMPLE RESULTS - 05 L1707788 MW-05 Collected date/time: 02/19/24 13:50 Metals (ICPMS) by Method 6020B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Antimony U 1.03 4.00 1 02/26/2024 17:21 WG2231829 Arsenic U 0.180 2.00 1 02/26/2024 17:21 WG2231829 Barium 14.3 0.381 2.00 1 02/26/2024 17:21 WG2231829 Beryllium U 0.190 2.00 1 02/26/2024 17:21 WG2231829 Cadmium U 0.150 1.00 1 02/26/2024 17:21 WG2231829 Chromium U 1.24 2.00 1 02/26/2024 17:21 WG2231829 Copper U 1.51 5.00 1 02/26/2024 17:21 WG2231829 Cobalt 0.0782 J 0.0596 2.00 1 02/26/2024 17:21 WG2231829 Lead U 0.849 2.00 1 02/26/2024 17:21 WG2231829 Manganese 6.39 0.704 5.00 1 02/26/2024 17:21 WG2231829 Nickel 0.826 J 0.816 2.00 1 02/26/2024 17:21 WG2231829 Selenium U 0.300 2.00 1 02/26/2024 17:21 WG2231829 Silver U 0.0700 2.00 1 02/26/2024 17:21 WG2231829 Thallium U 0.121 2.00 1 02/26/2024 17:21 WG2231829 Vanadium 1.57 J 0.664 5.00 1 02/26/2024 17:21 WG2231829 Zinc U 3.02 25.0 1 02/26/2024 17:21 WG2231829 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 02/23/2024 16:00 WG2232457 Acrolein U J4 2.54 50.0 1 02/23/2024 16:00 WG2232457 Acrylonitrile U 0.671 10.0 1 02/29/2024 02:57 WG2235111 Benzene U 0.0941 1.00 1 02/23/2024 16:00 WG2232457 Bromobenzene U 0.118 1.00 1 02/23/2024 16:00 WG2232457 Bromodichloromethane U 0.136 1.00 1 02/23/2024 16:00 WG2232457 Bromoform U 0.129 1.00 1 02/23/2024 16:00 WG2232457 Bromomethane U 0.605 5.00 1 02/23/2024 16:00 WG2232457 n-Butylbenzene U 0.157 1.00 1 02/23/2024 16:00 WG2232457 sec-Butylbenzene U 0.125 1.00 1 02/23/2024 16:00 WG2232457 tert-Butylbenzene U 0.127 1.00 1 02/23/2024 16:00 WG2232457 Carbon tetrachloride U 0.128 1.00 1 02/23/2024 16:00 WG2232457 Chlorobenzene U 0.116 1.00 1 02/23/2024 16:00 WG2232457 Chlorodibromomethane U 0.140 1.00 1 02/23/2024 16:00 WG2232457 Chloroethane U 0.192 5.00 1 02/23/2024 16:00 WG2232457 Chloroform 0.340 J 0.111 5.00 1 02/23/2024 16:00 WG2232457 Chloromethane U 0.960 2.50 1 02/29/2024 02:57 WG2235111 2-Chlorotoluene U 0.106 1.00 1 02/23/2024 16:00 WG2232457 4-Chlorotoluene U 0.114 1.00 1 02/23/2024 16:00 WG2232457 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/23/2024 16:00 WG2232457 1,2-Dibromoethane U 0.126 1.00 1 02/23/2024 16:00 WG2232457 Dibromomethane U 0.122 1.00 1 02/23/2024 16:00 WG2232457 1,2-Dichlorobenzene U 0.107 1.00 1 02/23/2024 16:00 WG2232457 1,3-Dichlorobenzene U 0.110 1.00 1 02/23/2024 16:00 WG2232457 1,4-Dichlorobenzene U 0.120 1.00 1 02/23/2024 16:00 WG2232457 Dichlorodifluoromethane U 0.374 5.00 1 02/23/2024 16:00 WG2232457 1,1-Dichloroethane U 0.100 1.00 1 02/23/2024 16:00 WG2232457 1,2-Dichloroethane U 0.0819 1.00 1 02/23/2024 16:00 WG2232457 1,1-Dichloroethene U 0.188 1.00 1 02/23/2024 16:00 WG2232457 cis-1,2-Dichloroethene U 0.126 1.00 1 02/23/2024 16:00 WG2232457 trans-1,2-Dichloroethene U 0.149 1.00 1 02/23/2024 16:00 WG2232457 1,2-Dichloropropane U 0.149 1.00 1 02/29/2024 02:57 WG2235111 1,1-Dichloropropene U 0.142 1.00 1 02/23/2024 16:00 WG2232457 1,3-Dichloropropane U 0.110 1.00 1 02/23/2024 16:00 WG2232457 cis-1,3-Dichloropropene U 0.111 1.00 1 02/23/2024 16:00 WG2232457 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 18 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 18 of 52 SAMPLE RESULTS - 05 L1707788 MW-05 Collected date/time: 02/19/24 13:50 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time trans-1,3-Dichloropropene U 0.118 1.00 1 02/23/2024 16:00 WG2232457 2,2-Dichloropropane U 0.161 1.00 1 02/23/2024 16:00 WG2232457 Di-isopropyl ether U 0.105 1.00 1 02/29/2024 02:57 WG2235111 Ethylbenzene U 0.137 1.00 1 02/23/2024 16:00 WG2232457 Hexachloro-1,3-butadiene U 0.337 1.00 1 02/23/2024 16:00 WG2232457 Isopropylbenzene U 0.105 1.00 1 02/23/2024 16:00 WG2232457 p-Isopropyltoluene U 0.120 1.00 1 02/23/2024 16:00 WG2232457 2-Butanone (MEK)U 1.19 10.0 1 02/23/2024 16:00 WG2232457 Methylene Chloride U 0.430 5.00 1 02/23/2024 16:00 WG2232457 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/23/2024 16:00 WG2232457 Methyl tert-butyl ether U 0.101 1.00 1 02/23/2024 16:00 WG2232457 Naphthalene U 1.00 5.00 1 02/29/2024 02:57 WG2235111 n-Propylbenzene U 0.0993 1.00 1 02/23/2024 16:00 WG2232457 Styrene U 0.118 1.00 1 02/29/2024 02:57 WG2235111 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/23/2024 16:00 WG2232457 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/23/2024 16:00 WG2232457 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 02/23/2024 16:00 WG2232457 Tetrachloroethene U 0.300 1.00 1 02/23/2024 16:00 WG2232457 Toluene U 0.278 1.00 1 02/23/2024 16:00 WG2232457 1,2,3-Trichlorobenzene U 0.230 1.00 1 02/23/2024 16:00 WG2232457 1,2,4-Trichlorobenzene U 0.481 1.00 1 02/23/2024 16:00 WG2232457 1,1,1-Trichloroethane U J4 0.149 1.00 1 02/23/2024 16:00 WG2232457 1,1,2-Trichloroethane U 0.158 1.00 1 02/23/2024 16:00 WG2232457 Trichloroethene U 0.190 1.00 1 02/23/2024 16:00 WG2232457 Trichlorofluoromethane U 0.160 5.00 1 02/23/2024 16:00 WG2232457 1,2,3-Trichloropropane U 0.237 2.50 1 02/23/2024 16:00 WG2232457 1,2,4-Trimethylbenzene U 0.322 1.00 1 02/23/2024 16:00 WG2232457 1,2,3-Trimethylbenzene U 0.104 1.00 1 02/23/2024 16:00 WG2232457 1,3,5-Trimethylbenzene U 0.104 1.00 1 02/23/2024 16:00 WG2232457 Vinyl chloride U 0.234 1.00 1 02/23/2024 16:00 WG2232457 Xylenes, Total U 0.174 3.00 1 02/23/2024 16:00 WG2232457 (S) Toluene-d8 106 80.0-120 02/23/2024 16:00 WG2232457 (S) Toluene-d8 102 80.0-120 02/29/2024 02:57 WG2235111 (S) 4-Bromofluorobenzene 93.9 77.0-126 02/23/2024 16:00 WG2232457 (S) 4-Bromofluorobenzene 91.1 77.0-126 02/29/2024 02:57 WG2235111 (S) 1,2-Dichloroethane-d4 126 70.0-130 02/23/2024 16:00 WG2232457 (S) 1,2-Dichloroethane-d4 98.4 70.0-130 02/29/2024 02:57 WG2235111 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,4-Dioxane 0.0574 B J 0.0447 0.400 1 02/23/2024 22:51 WG2230421 Acenaphthene U 0.0886 1.00 1 02/26/2024 17:51 WG2233144 Acenaphthylene U 0.0921 1.00 1 02/26/2024 17:51 WG2233144 Anthracene U 0.0804 1.00 1 02/26/2024 17:51 WG2233144 Benzidine U J3 J4 3.74 10.0 1 02/26/2024 17:51 WG2233144 Benzo(a)anthracene U 0.199 1.00 1 02/26/2024 17:51 WG2233144 Benzo(b)fluoranthene U 0.130 1.00 1 02/26/2024 17:51 WG2233144 Benzo(k)fluoranthene U 0.120 1.00 1 02/26/2024 17:51 WG2233144 Benzo(g,h,i)perylene U 0.121 1.00 1 02/26/2024 17:51 WG2233144 Benzo(a)pyrene U 0.0381 1.00 1 02/26/2024 17:51 WG2233144 Bis(2-chlorethoxy)methane U 0.116 10.0 1 02/26/2024 17:51 WG2233144 Bis(2-chloroethyl)ether U 0.137 10.0 1 02/26/2024 17:51 WG2233144 2,2-Oxybis(1-Chloropropane)U 0.210 10.0 1 02/26/2024 17:51 WG2233144 4-Bromophenyl-phenylether U 0.0877 10.0 1 02/26/2024 17:51 WG2233144 2-Chloronaphthalene U 0.0648 1.00 1 02/26/2024 17:51 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 19 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 19 of 52 SAMPLE RESULTS - 05 L1707788 MW-05 Collected date/time: 02/19/24 13:50 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 4-Chlorophenyl-phenylether U 0.0926 10.0 1 02/26/2024 17:51 WG2233144 Chrysene U 0.130 1.00 1 02/26/2024 17:51 WG2233144 Dibenz(a,h)anthracene U 0.0644 1.00 1 02/26/2024 17:51 WG2233144 1,2-Dichlorobenzene U 0.0713 10.0 1 02/26/2024 17:51 WG2233144 1,3-Dichlorobenzene U 0.132 10.0 1 02/26/2024 17:51 WG2233144 1,4-Dichlorobenzene U 0.0942 10.0 1 02/26/2024 17:51 WG2233144 3,3-Dichlorobenzidine U 0.212 10.0 1 02/26/2024 17:51 WG2233144 2,4-Dinitrotoluene U 0.0983 10.0 1 02/26/2024 17:51 WG2233144 2,6-Dinitrotoluene U 0.250 10.0 1 02/26/2024 17:51 WG2233144 Fluoranthene U 0.102 1.00 1 02/26/2024 17:51 WG2233144 Fluorene U 0.0844 1.00 1 02/26/2024 17:51 WG2233144 Hexachlorobenzene U 0.0755 1.00 1 02/26/2024 17:51 WG2233144 Hexachloro-1,3-butadiene U 0.0968 10.0 1 02/26/2024 17:51 WG2233144 Hexachlorocyclopentadiene U 0.0598 10.0 1 02/26/2024 17:51 WG2233144 Hexachloroethane U 0.127 10.0 1 02/26/2024 17:51 WG2233144 Indeno(1,2,3-cd)pyrene U 0.279 1.00 1 02/26/2024 17:51 WG2233144 Isophorone U 0.143 10.0 1 02/26/2024 17:51 WG2233144 Naphthalene U 0.159 1.00 1 02/26/2024 17:51 WG2233144 Nitrobenzene U 0.297 10.0 1 02/26/2024 17:51 WG2233144 n-Nitrosodimethylamine U 0.998 10.0 1 02/26/2024 17:51 WG2233144 n-Nitrosodiphenylamine U 2.37 10.0 1 02/26/2024 17:51 WG2233144 n-Nitrosodi-n-propylamine U 0.261 10.0 1 02/26/2024 17:51 WG2233144 Phenanthrene U 0.112 1.00 1 02/26/2024 17:51 WG2233144 Benzylbutyl phthalate U 0.765 3.00 1 02/26/2024 17:51 WG2233144 Bis(2-ethylhexyl)phthalate U 0.895 3.00 1 02/26/2024 17:51 WG2233144 Di-n-butyl phthalate U 0.453 3.00 1 02/26/2024 17:51 WG2233144 Diethyl phthalate U 0.287 3.00 1 02/26/2024 17:51 WG2233144 Dimethyl phthalate U 0.260 3.00 1 02/26/2024 17:51 WG2233144 Di-n-octyl phthalate U 0.932 3.00 1 02/26/2024 17:51 WG2233144 Pyrene U 0.107 1.00 1 02/26/2024 17:51 WG2233144 1,2,4-Trichlorobenzene U 0.0698 10.0 1 02/26/2024 17:51 WG2233144 4-Chloro-3-methylphenol U 0.131 10.0 1 02/26/2024 17:51 WG2233144 2-Chlorophenol U 0.133 10.0 1 02/26/2024 17:51 WG2233144 2,4-Dichlorophenol U 0.102 10.0 1 02/26/2024 17:51 WG2233144 2,4-Dimethylphenol U 0.0636 10.0 1 02/26/2024 17:51 WG2233144 4,6-Dinitro-2-methylphenol U 1.12 10.0 1 02/26/2024 17:51 WG2233144 2,4-Dinitrophenol U 5.93 10.0 1 02/26/2024 17:51 WG2233144 2-Nitrophenol U 0.117 10.0 1 02/26/2024 17:51 WG2233144 4-Nitrophenol U 0.143 10.0 1 02/26/2024 17:51 WG2233144 Pentachlorophenol U 0.313 10.0 1 02/26/2024 17:51 WG2233144 Phenol U 4.33 10.0 1 02/26/2024 17:51 WG2233144 2,4,6-Trichlorophenol U 0.100 10.0 1 02/26/2024 17:51 WG2233144 (S) Nitrobenzene-d5 70.9 10.0-120 02/23/2024 22:51 WG2230421 (S) 2-Fluorophenol 23.4 10.0-120 02/26/2024 17:51 WG2233144 (S) Phenol-d5 16.6 10.0-120 02/26/2024 17:51 WG2233144 (S) Nitrobenzene-d5 54.1 10.0-127 02/26/2024 17:51 WG2233144 (S) 2-Fluorobiphenyl 53.0 10.0-130 02/26/2024 17:51 WG2233144 (S) 2,4,6-Tribromophenol 52.6 10.0-155 02/26/2024 17:51 WG2233144 (S) p-Terphenyl-d14 71.3 10.0-128 02/26/2024 17:51 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 20 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 20 of 52 SAMPLE RESULTS - 06 L1707788 MW-06 Collected date/time: 02/19/24 10:40 Metals (ICPMS) by Method 6020B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Antimony U 1.03 4.00 1 02/26/2024 17:39 WG2231829 Arsenic U 0.180 2.00 1 02/26/2024 17:39 WG2231829 Barium 23.2 0.381 2.00 1 02/26/2024 17:39 WG2231829 Beryllium U 0.190 2.00 1 02/26/2024 17:39 WG2231829 Cadmium U 0.150 1.00 1 02/26/2024 17:39 WG2231829 Chromium 1.99 J 1.24 2.00 1 02/26/2024 17:39 WG2231829 Copper U 1.51 5.00 1 02/26/2024 17:39 WG2231829 Cobalt 0.112 J 0.0596 2.00 1 02/26/2024 17:39 WG2231829 Lead U 0.849 2.00 1 02/26/2024 17:39 WG2231829 Manganese 10.6 0.704 5.00 1 02/26/2024 17:39 WG2231829 Nickel 3.89 0.816 2.00 1 02/26/2024 17:39 WG2231829 Selenium U 0.300 2.00 1 02/26/2024 17:39 WG2231829 Silver U 0.0700 2.00 1 02/26/2024 17:39 WG2231829 Thallium U 0.121 2.00 1 02/26/2024 17:39 WG2231829 Vanadium 3.45 J 0.664 5.00 1 02/26/2024 17:39 WG2231829 Zinc U 3.02 25.0 1 02/26/2024 17:39 WG2231829 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 02/23/2024 16:19 WG2232457 Acrolein U J4 2.54 50.0 1 02/23/2024 16:19 WG2232457 Acrylonitrile U 0.671 10.0 1 02/29/2024 03:19 WG2235111 Benzene U 0.0941 1.00 1 02/23/2024 16:19 WG2232457 Bromobenzene U 0.118 1.00 1 02/23/2024 16:19 WG2232457 Bromodichloromethane U 0.136 1.00 1 02/23/2024 16:19 WG2232457 Bromoform U 0.129 1.00 1 02/23/2024 16:19 WG2232457 Bromomethane U 0.605 5.00 1 02/23/2024 16:19 WG2232457 n-Butylbenzene U 0.157 1.00 1 02/23/2024 16:19 WG2232457 sec-Butylbenzene U 0.125 1.00 1 02/23/2024 16:19 WG2232457 tert-Butylbenzene U 0.127 1.00 1 02/23/2024 16:19 WG2232457 Carbon tetrachloride U 0.128 1.00 1 02/23/2024 16:19 WG2232457 Chlorobenzene U 0.116 1.00 1 02/23/2024 16:19 WG2232457 Chlorodibromomethane U 0.140 1.00 1 02/23/2024 16:19 WG2232457 Chloroethane U 0.192 5.00 1 02/23/2024 16:19 WG2232457 Chloroform U 0.111 5.00 1 02/23/2024 16:19 WG2232457 Chloromethane U 0.960 2.50 1 02/29/2024 03:19 WG2235111 2-Chlorotoluene U 0.106 1.00 1 02/23/2024 16:19 WG2232457 4-Chlorotoluene U 0.114 1.00 1 02/23/2024 16:19 WG2232457 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1 02/23/2024 16:19 WG2232457 1,2-Dibromoethane U 0.126 1.00 1 02/23/2024 16:19 WG2232457 Dibromomethane U 0.122 1.00 1 02/23/2024 16:19 WG2232457 1,2-Dichlorobenzene U 0.107 1.00 1 02/23/2024 16:19 WG2232457 1,3-Dichlorobenzene U 0.110 1.00 1 02/23/2024 16:19 WG2232457 1,4-Dichlorobenzene U 0.120 1.00 1 02/23/2024 16:19 WG2232457 Dichlorodifluoromethane U 0.374 5.00 1 02/23/2024 16:19 WG2232457 1,1-Dichloroethane U 0.100 1.00 1 02/23/2024 16:19 WG2232457 1,2-Dichloroethane U 0.0819 1.00 1 02/23/2024 16:19 WG2232457 1,1-Dichloroethene U 0.188 1.00 1 02/23/2024 16:19 WG2232457 cis-1,2-Dichloroethene U 0.126 1.00 1 02/23/2024 16:19 WG2232457 trans-1,2-Dichloroethene U 0.149 1.00 1 02/23/2024 16:19 WG2232457 1,2-Dichloropropane U 0.149 1.00 1 02/29/2024 03:19 WG2235111 1,1-Dichloropropene U 0.142 1.00 1 02/23/2024 16:19 WG2232457 1,3-Dichloropropane U 0.110 1.00 1 02/23/2024 16:19 WG2232457 cis-1,3-Dichloropropene U 0.111 1.00 1 02/23/2024 16:19 WG2232457 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 21 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 21 of 52 SAMPLE RESULTS - 06 L1707788 MW-06 Collected date/time: 02/19/24 10:40 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time trans-1,3-Dichloropropene U 0.118 1.00 1 02/23/2024 16:19 WG2232457 2,2-Dichloropropane U 0.161 1.00 1 02/23/2024 16:19 WG2232457 Di-isopropyl ether U 0.105 1.00 1 02/29/2024 03:19 WG2235111 Ethylbenzene U 0.137 1.00 1 02/23/2024 16:19 WG2232457 Hexachloro-1,3-butadiene U 0.337 1.00 1 02/23/2024 16:19 WG2232457 Isopropylbenzene U 0.105 1.00 1 02/23/2024 16:19 WG2232457 p-Isopropyltoluene U 0.120 1.00 1 02/23/2024 16:19 WG2232457 2-Butanone (MEK)U 1.19 10.0 1 02/23/2024 16:19 WG2232457 Methylene Chloride U 0.430 5.00 1 02/23/2024 16:19 WG2232457 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/23/2024 16:19 WG2232457 Methyl tert-butyl ether U 0.101 1.00 1 02/23/2024 16:19 WG2232457 Naphthalene U 1.00 5.00 1 02/29/2024 03:19 WG2235111 n-Propylbenzene U 0.0993 1.00 1 02/23/2024 16:19 WG2232457 Styrene U 0.118 1.00 1 02/29/2024 03:19 WG2235111 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/23/2024 16:19 WG2232457 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/23/2024 16:19 WG2232457 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 02/23/2024 16:19 WG2232457 Tetrachloroethene U 0.300 1.00 1 02/23/2024 16:19 WG2232457 Toluene U 0.278 1.00 1 02/23/2024 16:19 WG2232457 1,2,3-Trichlorobenzene U 0.230 1.00 1 02/23/2024 16:19 WG2232457 1,2,4-Trichlorobenzene U 0.481 1.00 1 02/23/2024 16:19 WG2232457 1,1,1-Trichloroethane U J4 0.149 1.00 1 02/23/2024 16:19 WG2232457 1,1,2-Trichloroethane U 0.158 1.00 1 02/23/2024 16:19 WG2232457 Trichloroethene U 0.190 1.00 1 02/23/2024 16:19 WG2232457 Trichlorofluoromethane U 0.160 5.00 1 02/23/2024 16:19 WG2232457 1,2,3-Trichloropropane U 0.237 2.50 1 02/23/2024 16:19 WG2232457 1,2,4-Trimethylbenzene U 0.322 1.00 1 02/23/2024 16:19 WG2232457 1,2,3-Trimethylbenzene U 0.104 1.00 1 02/23/2024 16:19 WG2232457 1,3,5-Trimethylbenzene U 0.104 1.00 1 02/23/2024 16:19 WG2232457 Vinyl chloride U 0.234 1.00 1 02/23/2024 16:19 WG2232457 Xylenes, Total U 0.174 3.00 1 02/23/2024 16:19 WG2232457 (S) Toluene-d8 104 80.0-120 02/23/2024 16:19 WG2232457 (S) Toluene-d8 105 80.0-120 02/29/2024 03:19 WG2235111 (S) 4-Bromofluorobenzene 92.9 77.0-126 02/23/2024 16:19 WG2232457 (S) 4-Bromofluorobenzene 97.9 77.0-126 02/29/2024 03:19 WG2235111 (S) 1,2-Dichloroethane-d4 130 70.0-130 02/23/2024 16:19 WG2232457 (S) 1,2-Dichloroethane-d4 102 70.0-130 02/29/2024 03:19 WG2235111 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,4-Dioxane 0.0731 B J 0.0447 0.400 1 02/23/2024 23:11 WG2230421 Acenaphthene U 0.0930 1.05 1.05 02/26/2024 18:13 WG2233144 Acenaphthylene U 0.0967 1.05 1.05 02/26/2024 18:13 WG2233144 Anthracene U 0.0844 1.05 1.05 02/26/2024 18:13 WG2233144 Benzidine U J3 J4 3.93 10.5 1.05 02/26/2024 18:13 WG2233144 Benzo(a)anthracene U 0.209 1.05 1.05 02/26/2024 18:13 WG2233144 Benzo(b)fluoranthene U 0.136 1.05 1.05 02/26/2024 18:13 WG2233144 Benzo(k)fluoranthene U 0.126 1.05 1.05 02/26/2024 18:13 WG2233144 Benzo(g,h,i)perylene U 0.127 1.05 1.05 02/26/2024 18:13 WG2233144 Benzo(a)pyrene U 0.0400 1.05 1.05 02/26/2024 18:13 WG2233144 Bis(2-chlorethoxy)methane U 0.122 10.5 1.05 02/26/2024 18:13 WG2233144 Bis(2-chloroethyl)ether U 0.144 10.5 1.05 02/26/2024 18:13 WG2233144 2,2-Oxybis(1-Chloropropane)U 0.221 10.5 1.05 02/26/2024 18:13 WG2233144 4-Bromophenyl-phenylether U 0.0921 10.5 1.05 02/26/2024 18:13 WG2233144 2-Chloronaphthalene U 0.0680 1.05 1.05 02/26/2024 18:13 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 22 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 22 of 52 SAMPLE RESULTS - 06 L1707788 MW-06 Collected date/time: 02/19/24 10:40 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 4-Chlorophenyl-phenylether U 0.0972 10.5 1.05 02/26/2024 18:13 WG2233144 Chrysene U 0.136 1.05 1.05 02/26/2024 18:13 WG2233144 Dibenz(a,h)anthracene U 0.0676 1.05 1.05 02/26/2024 18:13 WG2233144 1,2-Dichlorobenzene U 0.0749 10.5 1.05 02/26/2024 18:13 WG2233144 1,3-Dichlorobenzene U 0.139 10.5 1.05 02/26/2024 18:13 WG2233144 1,4-Dichlorobenzene U 0.0989 10.5 1.05 02/26/2024 18:13 WG2233144 3,3-Dichlorobenzidine U 0.223 10.5 1.05 02/26/2024 18:13 WG2233144 2,4-Dinitrotoluene U 0.103 10.5 1.05 02/26/2024 18:13 WG2233144 2,6-Dinitrotoluene U 0.263 10.5 1.05 02/26/2024 18:13 WG2233144 Fluoranthene 0.152 J 0.107 1.05 1.05 02/26/2024 18:13 WG2233144 Fluorene U 0.0886 1.05 1.05 02/26/2024 18:13 WG2233144 Hexachlorobenzene U 0.0793 1.05 1.05 02/26/2024 18:13 WG2233144 Hexachloro-1,3-butadiene U 0.102 10.5 1.05 02/26/2024 18:13 WG2233144 Hexachlorocyclopentadiene U 0.0628 10.5 1.05 02/26/2024 18:13 WG2233144 Hexachloroethane U 0.133 10.5 1.05 02/26/2024 18:13 WG2233144 Indeno(1,2,3-cd)pyrene U 0.293 1.05 1.05 02/26/2024 18:13 WG2233144 Isophorone U 0.150 10.5 1.05 02/26/2024 18:13 WG2233144 Naphthalene U 0.167 1.05 1.05 02/26/2024 18:13 WG2233144 Nitrobenzene U 0.312 10.5 1.05 02/26/2024 18:13 WG2233144 n-Nitrosodimethylamine U 1.05 10.5 1.05 02/26/2024 18:13 WG2233144 n-Nitrosodiphenylamine U 2.49 10.5 1.05 02/26/2024 18:13 WG2233144 n-Nitrosodi-n-propylamine U 0.274 10.5 1.05 02/26/2024 18:13 WG2233144 Phenanthrene U 0.118 1.05 1.05 02/26/2024 18:13 WG2233144 Benzylbutyl phthalate U 0.803 3.15 1.05 02/26/2024 18:13 WG2233144 Bis(2-ethylhexyl)phthalate U 0.940 3.15 1.05 02/26/2024 18:13 WG2233144 Di-n-butyl phthalate U 0.476 3.15 1.05 02/26/2024 18:13 WG2233144 Diethyl phthalate U 0.301 3.15 1.05 02/26/2024 18:13 WG2233144 Dimethyl phthalate U 0.273 3.15 1.05 02/26/2024 18:13 WG2233144 Di-n-octyl phthalate U 0.979 3.15 1.05 02/26/2024 18:13 WG2233144 Pyrene U 0.112 1.05 1.05 02/26/2024 18:13 WG2233144 1,2,4-Trichlorobenzene U 0.0733 10.5 1.05 02/26/2024 18:13 WG2233144 4-Chloro-3-methylphenol U 0.138 10.5 1.05 02/26/2024 18:13 WG2233144 2-Chlorophenol U 0.140 10.5 1.05 02/26/2024 18:13 WG2233144 2,4-Dichlorophenol U 0.107 10.5 1.05 02/26/2024 18:13 WG2233144 2,4-Dimethylphenol U 0.0668 10.5 1.05 02/26/2024 18:13 WG2233144 4,6-Dinitro-2-methylphenol U 1.18 10.5 1.05 02/26/2024 18:13 WG2233144 2,4-Dinitrophenol U 6.23 10.5 1.05 02/26/2024 18:13 WG2233144 2-Nitrophenol U 0.123 10.5 1.05 02/26/2024 18:13 WG2233144 4-Nitrophenol U 0.150 10.5 1.05 02/26/2024 18:13 WG2233144 Pentachlorophenol U 0.329 10.5 1.05 02/26/2024 18:13 WG2233144 Phenol U 4.55 10.5 1.05 02/26/2024 18:13 WG2233144 2,4,6-Trichlorophenol U 0.105 10.5 1.05 02/26/2024 18:13 WG2233144 (S) Nitrobenzene-d5 70.0 10.0-120 02/23/2024 23:11 WG2230421 (S) 2-Fluorophenol 28.1 10.0-120 02/26/2024 18:13 WG2233144 (S) Phenol-d5 17.0 10.0-120 02/26/2024 18:13 WG2233144 (S) Nitrobenzene-d5 47.6 10.0-127 02/26/2024 18:13 WG2233144 (S) 2-Fluorobiphenyl 52.2 10.0-130 02/26/2024 18:13 WG2233144 (S) 2,4,6-Tribromophenol 53.8 10.0-155 02/26/2024 18:13 WG2233144 (S) p-Terphenyl-d14 65.8 10.0-128 02/26/2024 18:13 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 23 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 23 of 52 SAMPLE RESULTS - 07 L1707788 MW-07 Collected date/time: 02/19/24 17:10 Metals (ICPMS) by Method 6020B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Antimony U 1.03 4.00 1 02/26/2024 17:42 WG2231829 Arsenic U 0.180 2.00 1 02/26/2024 17:42 WG2231829 Barium 35.7 0.381 2.00 1 02/26/2024 17:42 WG2231829 Beryllium U 0.190 2.00 1 02/26/2024 17:42 WG2231829 Cadmium U 0.150 1.00 1 02/26/2024 17:42 WG2231829 Chromium U 1.24 2.00 1 02/26/2024 17:42 WG2231829 Copper U 1.51 5.00 1 02/26/2024 17:42 WG2231829 Cobalt 0.169 J 0.0596 2.00 1 02/26/2024 17:42 WG2231829 Lead U 0.849 2.00 1 02/26/2024 17:42 WG2231829 Manganese 11.7 0.704 5.00 1 02/26/2024 17:42 WG2231829 Nickel 1.88 J 0.816 2.00 1 02/26/2024 17:42 WG2231829 Selenium U 0.300 2.00 1 02/26/2024 17:42 WG2231829 Silver U 0.0700 2.00 1 02/26/2024 17:42 WG2231829 Thallium U 0.121 2.00 1 02/26/2024 17:42 WG2231829 Vanadium 2.92 J 0.664 5.00 1 02/26/2024 17:42 WG2231829 Zinc U 3.02 25.0 1 02/26/2024 17:42 WG2231829 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 02/26/2024 09:29 WG2233830 Acrolein U C3 2.54 50.0 1 02/26/2024 09:29 WG2233830 Acrylonitrile U 0.671 10.0 1 02/26/2024 09:29 WG2233830 Benzene U 0.0941 1.00 1 02/26/2024 09:29 WG2233830 Bromobenzene U C3 0.118 1.00 1 02/26/2024 09:29 WG2233830 Bromodichloromethane U 0.136 1.00 1 02/26/2024 09:29 WG2233830 Bromoform U 0.129 1.00 1 02/26/2024 09:29 WG2233830 Bromomethane U C3 0.605 5.00 1 02/26/2024 09:29 WG2233830 n-Butylbenzene U 0.157 1.00 1 02/26/2024 09:29 WG2233830 sec-Butylbenzene U 0.125 1.00 1 02/26/2024 09:29 WG2233830 tert-Butylbenzene U 0.127 1.00 1 02/26/2024 09:29 WG2233830 Carbon tetrachloride U 0.128 1.00 1 02/26/2024 09:29 WG2233830 Chlorobenzene U 0.116 1.00 1 02/26/2024 09:29 WG2233830 Chlorodibromomethane U 0.140 1.00 1 02/26/2024 09:29 WG2233830 Chloroethane U C3 0.192 5.00 1 02/26/2024 09:29 WG2233830 Chloroform U 0.111 5.00 1 02/26/2024 09:29 WG2233830 Chloromethane U 0.960 2.50 1 02/26/2024 09:29 WG2233830 2-Chlorotoluene U 0.106 1.00 1 02/26/2024 09:29 WG2233830 4-Chlorotoluene U 0.114 1.00 1 02/26/2024 09:29 WG2233830 1,2-Dibromo-3-Chloropropane U C3 0.276 5.00 1 02/26/2024 09:29 WG2233830 1,2-Dibromoethane U 0.126 1.00 1 02/26/2024 09:29 WG2233830 Dibromomethane U 0.122 1.00 1 02/26/2024 09:29 WG2233830 1,2-Dichlorobenzene U 0.107 1.00 1 02/26/2024 09:29 WG2233830 1,3-Dichlorobenzene U 0.110 1.00 1 02/26/2024 09:29 WG2233830 1,4-Dichlorobenzene U 0.120 1.00 1 02/26/2024 09:29 WG2233830 Dichlorodifluoromethane U 0.374 5.00 1 02/26/2024 09:29 WG2233830 1,1-Dichloroethane U 0.100 1.00 1 02/26/2024 09:29 WG2233830 1,2-Dichloroethane U 0.0819 1.00 1 02/26/2024 09:29 WG2233830 1,1-Dichloroethene U 0.188 1.00 1 02/26/2024 09:29 WG2233830 cis-1,2-Dichloroethene U 0.126 1.00 1 02/26/2024 09:29 WG2233830 trans-1,2-Dichloroethene U 0.149 1.00 1 02/26/2024 09:29 WG2233830 1,2-Dichloropropane U 0.149 1.00 1 02/26/2024 09:29 WG2233830 1,1-Dichloropropene U 0.142 1.00 1 02/26/2024 09:29 WG2233830 1,3-Dichloropropane U 0.110 1.00 1 02/26/2024 09:29 WG2233830 cis-1,3-Dichloropropene U 0.111 1.00 1 02/26/2024 09:29 WG2233830 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 24 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 24 of 52 SAMPLE RESULTS - 07 L1707788 MW-07 Collected date/time: 02/19/24 17:10 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time trans-1,3-Dichloropropene U 0.118 1.00 1 02/26/2024 09:29 WG2233830 2,2-Dichloropropane U C3 0.161 1.00 1 02/26/2024 09:29 WG2233830 Di-isopropyl ether U 0.105 1.00 1 02/26/2024 09:29 WG2233830 Ethylbenzene U 0.137 1.00 1 02/26/2024 09:29 WG2233830 Hexachloro-1,3-butadiene U 0.337 1.00 1 02/26/2024 09:29 WG2233830 Isopropylbenzene U 0.105 1.00 1 02/26/2024 09:29 WG2233830 p-Isopropyltoluene U 0.120 1.00 1 02/26/2024 09:29 WG2233830 2-Butanone (MEK)U 1.19 10.0 1 02/26/2024 09:29 WG2233830 Methylene Chloride U 0.430 5.00 1 02/26/2024 09:29 WG2233830 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/26/2024 09:29 WG2233830 Methyl tert-butyl ether U C3 0.101 1.00 1 02/26/2024 09:29 WG2233830 Naphthalene U 1.00 5.00 1 02/26/2024 09:29 WG2233830 n-Propylbenzene U 0.0993 1.00 1 02/26/2024 09:29 WG2233830 Styrene U 0.118 1.00 1 02/26/2024 09:29 WG2233830 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/26/2024 09:29 WG2233830 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/26/2024 09:29 WG2233830 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 02/26/2024 09:29 WG2233830 Tetrachloroethene U 0.300 1.00 1 02/26/2024 09:29 WG2233830 Toluene U 0.278 1.00 1 02/26/2024 09:29 WG2233830 1,2,3-Trichlorobenzene U 0.230 1.00 1 02/26/2024 09:29 WG2233830 1,2,4-Trichlorobenzene U 0.481 1.00 1 02/26/2024 09:29 WG2233830 1,1,1-Trichloroethane U 0.149 1.00 1 02/26/2024 09:29 WG2233830 1,1,2-Trichloroethane U 0.158 1.00 1 02/26/2024 09:29 WG2233830 Trichloroethene U 0.190 1.00 1 02/26/2024 09:29 WG2233830 Trichlorofluoromethane U 0.160 5.00 1 02/26/2024 09:29 WG2233830 1,2,3-Trichloropropane U 0.237 2.50 1 02/26/2024 09:29 WG2233830 1,2,4-Trimethylbenzene U 0.322 1.00 1 02/26/2024 09:29 WG2233830 1,2,3-Trimethylbenzene U 0.104 1.00 1 02/26/2024 09:29 WG2233830 1,3,5-Trimethylbenzene U 0.104 1.00 1 02/26/2024 09:29 WG2233830 Vinyl chloride U C3 0.234 1.00 1 02/26/2024 09:29 WG2233830 Xylenes, Total U 0.174 3.00 1 02/26/2024 09:29 WG2233830 (S) Toluene-d8 104 80.0-120 02/26/2024 09:29 WG2233830 (S) 4-Bromofluorobenzene 95.0 77.0-126 02/26/2024 09:29 WG2233830 (S) 1,2-Dichloroethane-d4 84.4 70.0-130 02/26/2024 09:29 WG2233830 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,4-Dioxane 0.0958 B J 0.0447 0.400 1 02/23/2024 23:30 WG2230421 Acenaphthene U 0.0886 1.00 1 02/26/2024 18:35 WG2233144 Acenaphthylene U 0.0921 1.00 1 02/26/2024 18:35 WG2233144 Anthracene U 0.0804 1.00 1 02/26/2024 18:35 WG2233144 Benzidine U J3 J4 3.74 10.0 1 02/26/2024 18:35 WG2233144 Benzo(a)anthracene U 0.199 1.00 1 02/26/2024 18:35 WG2233144 Benzo(b)fluoranthene U 0.130 1.00 1 02/26/2024 18:35 WG2233144 Benzo(k)fluoranthene U 0.120 1.00 1 02/26/2024 18:35 WG2233144 Benzo(g,h,i)perylene U 0.121 1.00 1 02/26/2024 18:35 WG2233144 Benzo(a)pyrene U 0.0381 1.00 1 02/26/2024 18:35 WG2233144 Bis(2-chlorethoxy)methane U 0.116 10.0 1 02/26/2024 18:35 WG2233144 Bis(2-chloroethyl)ether U 0.137 10.0 1 02/26/2024 18:35 WG2233144 2,2-Oxybis(1-Chloropropane)U 0.210 10.0 1 02/26/2024 18:35 WG2233144 4-Bromophenyl-phenylether U 0.0877 10.0 1 02/26/2024 18:35 WG2233144 2-Chloronaphthalene U 0.0648 1.00 1 02/26/2024 18:35 WG2233144 4-Chlorophenyl-phenylether U 0.0926 10.0 1 02/26/2024 18:35 WG2233144 Chrysene U 0.130 1.00 1 02/26/2024 18:35 WG2233144 Dibenz(a,h)anthracene U 0.0644 1.00 1 02/26/2024 18:35 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 25 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 25 of 52 SAMPLE RESULTS - 07 L1707788 MW-07 Collected date/time: 02/19/24 17:10 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichlorobenzene U 0.0713 10.0 1 02/26/2024 18:35 WG2233144 1,3-Dichlorobenzene U 0.132 10.0 1 02/26/2024 18:35 WG2233144 1,4-Dichlorobenzene U 0.0942 10.0 1 02/26/2024 18:35 WG2233144 3,3-Dichlorobenzidine U 0.212 10.0 1 02/26/2024 18:35 WG2233144 2,4-Dinitrotoluene U 0.0983 10.0 1 02/26/2024 18:35 WG2233144 2,6-Dinitrotoluene U 0.250 10.0 1 02/26/2024 18:35 WG2233144 Fluoranthene U 0.102 1.00 1 02/26/2024 18:35 WG2233144 Fluorene U 0.0844 1.00 1 02/26/2024 18:35 WG2233144 Hexachlorobenzene U 0.0755 1.00 1 02/26/2024 18:35 WG2233144 Hexachloro-1,3-butadiene U 0.0968 10.0 1 02/26/2024 18:35 WG2233144 Hexachlorocyclopentadiene U 0.0598 10.0 1 02/26/2024 18:35 WG2233144 Hexachloroethane U 0.127 10.0 1 02/26/2024 18:35 WG2233144 Indeno(1,2,3-cd)pyrene U 0.279 1.00 1 02/26/2024 18:35 WG2233144 Isophorone U 0.143 10.0 1 02/26/2024 18:35 WG2233144 Naphthalene U 0.159 1.00 1 02/26/2024 18:35 WG2233144 Nitrobenzene U 0.297 10.0 1 02/26/2024 18:35 WG2233144 n-Nitrosodimethylamine U 0.998 10.0 1 02/26/2024 18:35 WG2233144 n-Nitrosodiphenylamine U 2.37 10.0 1 02/26/2024 18:35 WG2233144 n-Nitrosodi-n-propylamine U 0.261 10.0 1 02/26/2024 18:35 WG2233144 Phenanthrene U 0.112 1.00 1 02/26/2024 18:35 WG2233144 Benzylbutyl phthalate U 0.765 3.00 1 02/26/2024 18:35 WG2233144 Bis(2-ethylhexyl)phthalate U 0.895 3.00 1 02/26/2024 18:35 WG2233144 Di-n-butyl phthalate U 0.453 3.00 1 02/26/2024 18:35 WG2233144 Diethyl phthalate U 0.287 3.00 1 02/26/2024 18:35 WG2233144 Dimethyl phthalate U 0.260 3.00 1 02/26/2024 18:35 WG2233144 Di-n-octyl phthalate U 0.932 3.00 1 02/26/2024 18:35 WG2233144 Pyrene U 0.107 1.00 1 02/26/2024 18:35 WG2233144 1,2,4-Trichlorobenzene U 0.0698 10.0 1 02/26/2024 18:35 WG2233144 4-Chloro-3-methylphenol U 0.131 10.0 1 02/26/2024 18:35 WG2233144 2-Chlorophenol U 0.133 10.0 1 02/26/2024 18:35 WG2233144 2,4-Dichlorophenol U 0.102 10.0 1 02/26/2024 18:35 WG2233144 2,4-Dimethylphenol U 0.0636 10.0 1 02/26/2024 18:35 WG2233144 4,6-Dinitro-2-methylphenol U 1.12 10.0 1 02/26/2024 18:35 WG2233144 2,4-Dinitrophenol U 5.93 10.0 1 02/26/2024 18:35 WG2233144 2-Nitrophenol U 0.117 10.0 1 02/26/2024 18:35 WG2233144 4-Nitrophenol U 0.143 10.0 1 02/26/2024 18:35 WG2233144 Pentachlorophenol U 0.313 10.0 1 02/26/2024 18:35 WG2233144 Phenol U 4.33 10.0 1 02/26/2024 18:35 WG2233144 2,4,6-Trichlorophenol U 0.100 10.0 1 02/26/2024 18:35 WG2233144 (S) Nitrobenzene-d5 69.2 10.0-120 02/23/2024 23:30 WG2230421 (S) 2-Fluorophenol 24.7 10.0-120 02/26/2024 18:35 WG2233144 (S) Phenol-d5 14.8 10.0-120 02/26/2024 18:35 WG2233144 (S) Nitrobenzene-d5 48.9 10.0-127 02/26/2024 18:35 WG2233144 (S) 2-Fluorobiphenyl 53.4 10.0-130 02/26/2024 18:35 WG2233144 (S) 2,4,6-Tribromophenol 48.7 10.0-155 02/26/2024 18:35 WG2233144 (S) p-Terphenyl-d14 60.7 10.0-128 02/26/2024 18:35 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 26 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 26 of 52 SAMPLE RESULTS - 08 L1707788 DUP-A Collected date/time: 02/19/24 16:25 Metals (ICPMS) by Method 6020B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Antimony U 1.03 4.00 1 02/26/2024 17:45 WG2231829 Arsenic U 0.180 2.00 1 02/26/2024 17:45 WG2231829 Barium 34.0 0.381 2.00 1 02/26/2024 17:45 WG2231829 Beryllium U 0.190 2.00 1 02/26/2024 17:45 WG2231829 Cadmium U 0.150 1.00 1 02/26/2024 17:45 WG2231829 Chromium U 1.24 2.00 1 02/26/2024 17:45 WG2231829 Copper U 1.51 5.00 1 02/26/2024 17:45 WG2231829 Cobalt 0.525 J 0.0596 2.00 1 02/26/2024 17:45 WG2231829 Lead U 0.849 2.00 1 02/26/2024 17:45 WG2231829 Manganese 64.8 0.704 5.00 1 02/26/2024 17:45 WG2231829 Nickel 1.11 J 0.816 2.00 1 02/26/2024 17:45 WG2231829 Selenium U 0.300 2.00 1 02/26/2024 17:45 WG2231829 Silver U 0.0700 2.00 1 02/26/2024 17:45 WG2231829 Thallium U 0.121 2.00 1 02/26/2024 17:45 WG2231829 Vanadium 1.13 J 0.664 5.00 1 02/26/2024 17:45 WG2231829 Zinc U 3.02 25.0 1 02/26/2024 17:45 WG2231829 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 02/26/2024 09:51 WG2233830 Acrolein U C3 2.54 50.0 1 02/26/2024 09:51 WG2233830 Acrylonitrile U 0.671 10.0 1 02/26/2024 09:51 WG2233830 Benzene U 0.0941 1.00 1 02/26/2024 09:51 WG2233830 Bromobenzene U C3 0.118 1.00 1 02/26/2024 09:51 WG2233830 Bromodichloromethane U 0.136 1.00 1 02/26/2024 09:51 WG2233830 Bromoform U 0.129 1.00 1 02/26/2024 09:51 WG2233830 Bromomethane U C3 0.605 5.00 1 02/26/2024 09:51 WG2233830 n-Butylbenzene U 0.157 1.00 1 02/26/2024 09:51 WG2233830 sec-Butylbenzene U 0.125 1.00 1 02/26/2024 09:51 WG2233830 tert-Butylbenzene U 0.127 1.00 1 02/26/2024 09:51 WG2233830 Carbon tetrachloride U 0.128 1.00 1 02/26/2024 09:51 WG2233830 Chlorobenzene U 0.116 1.00 1 02/26/2024 09:51 WG2233830 Chlorodibromomethane U 0.140 1.00 1 02/26/2024 09:51 WG2233830 Chloroethane U C3 0.192 5.00 1 02/26/2024 09:51 WG2233830 Chloroform U 0.111 5.00 1 02/26/2024 09:51 WG2233830 Chloromethane U 0.960 2.50 1 02/26/2024 09:51 WG2233830 2-Chlorotoluene U 0.106 1.00 1 02/26/2024 09:51 WG2233830 4-Chlorotoluene U 0.114 1.00 1 02/26/2024 09:51 WG2233830 1,2-Dibromo-3-Chloropropane U C3 0.276 5.00 1 02/26/2024 09:51 WG2233830 1,2-Dibromoethane U 0.126 1.00 1 02/26/2024 09:51 WG2233830 Dibromomethane U 0.122 1.00 1 02/26/2024 09:51 WG2233830 1,2-Dichlorobenzene U 0.107 1.00 1 02/26/2024 09:51 WG2233830 1,3-Dichlorobenzene U 0.110 1.00 1 02/26/2024 09:51 WG2233830 1,4-Dichlorobenzene U 0.120 1.00 1 02/26/2024 09:51 WG2233830 Dichlorodifluoromethane U 0.374 5.00 1 02/26/2024 09:51 WG2233830 1,1-Dichloroethane U 0.100 1.00 1 02/26/2024 09:51 WG2233830 1,2-Dichloroethane U 0.0819 1.00 1 02/26/2024 09:51 WG2233830 1,1-Dichloroethene U 0.188 1.00 1 02/26/2024 09:51 WG2233830 cis-1,2-Dichloroethene U 0.126 1.00 1 02/26/2024 09:51 WG2233830 trans-1,2-Dichloroethene U 0.149 1.00 1 02/26/2024 09:51 WG2233830 1,2-Dichloropropane U 0.149 1.00 1 02/26/2024 09:51 WG2233830 1,1-Dichloropropene U 0.142 1.00 1 02/26/2024 09:51 WG2233830 1,3-Dichloropropane U 0.110 1.00 1 02/26/2024 09:51 WG2233830 cis-1,3-Dichloropropene U 0.111 1.00 1 02/26/2024 09:51 WG2233830 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 27 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 27 of 52 SAMPLE RESULTS - 08 L1707788 DUP-A Collected date/time: 02/19/24 16:25 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time trans-1,3-Dichloropropene U 0.118 1.00 1 02/26/2024 09:51 WG2233830 2,2-Dichloropropane U C3 0.161 1.00 1 02/26/2024 09:51 WG2233830 Di-isopropyl ether U 0.105 1.00 1 02/26/2024 09:51 WG2233830 Ethylbenzene U 0.137 1.00 1 02/26/2024 09:51 WG2233830 Hexachloro-1,3-butadiene U 0.337 1.00 1 02/26/2024 09:51 WG2233830 Isopropylbenzene U 0.105 1.00 1 02/26/2024 09:51 WG2233830 p-Isopropyltoluene U 0.120 1.00 1 02/26/2024 09:51 WG2233830 2-Butanone (MEK)U 1.19 10.0 1 02/26/2024 09:51 WG2233830 Methylene Chloride U 0.430 5.00 1 02/26/2024 09:51 WG2233830 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/26/2024 09:51 WG2233830 Methyl tert-butyl ether U C3 0.101 1.00 1 02/26/2024 09:51 WG2233830 Naphthalene U 1.00 5.00 1 02/26/2024 09:51 WG2233830 n-Propylbenzene U 0.0993 1.00 1 02/26/2024 09:51 WG2233830 Styrene U 0.118 1.00 1 02/26/2024 09:51 WG2233830 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/26/2024 09:51 WG2233830 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/26/2024 09:51 WG2233830 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 02/26/2024 09:51 WG2233830 Tetrachloroethene U 0.300 1.00 1 02/26/2024 09:51 WG2233830 Toluene U 0.278 1.00 1 02/26/2024 09:51 WG2233830 1,2,3-Trichlorobenzene U 0.230 1.00 1 02/26/2024 09:51 WG2233830 1,2,4-Trichlorobenzene U 0.481 1.00 1 02/26/2024 09:51 WG2233830 1,1,1-Trichloroethane U 0.149 1.00 1 02/26/2024 09:51 WG2233830 1,1,2-Trichloroethane U 0.158 1.00 1 02/26/2024 09:51 WG2233830 Trichloroethene U 0.190 1.00 1 02/26/2024 09:51 WG2233830 Trichlorofluoromethane U 0.160 5.00 1 02/26/2024 09:51 WG2233830 1,2,3-Trichloropropane U 0.237 2.50 1 02/26/2024 09:51 WG2233830 1,2,4-Trimethylbenzene U 0.322 1.00 1 02/26/2024 09:51 WG2233830 1,2,3-Trimethylbenzene U 0.104 1.00 1 02/26/2024 09:51 WG2233830 1,3,5-Trimethylbenzene U 0.104 1.00 1 02/26/2024 09:51 WG2233830 Vinyl chloride U C3 0.234 1.00 1 02/26/2024 09:51 WG2233830 Xylenes, Total U 0.174 3.00 1 02/26/2024 09:51 WG2233830 (S) Toluene-d8 107 80.0-120 02/26/2024 09:51 WG2233830 (S) 4-Bromofluorobenzene 98.6 77.0-126 02/26/2024 09:51 WG2233830 (S) 1,2-Dichloroethane-d4 86.4 70.0-130 02/26/2024 09:51 WG2233830 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,4-Dioxane U 0.0447 0.400 1 02/23/2024 23:49 WG2230421 Acenaphthene U 0.0886 1.00 1 02/26/2024 18:56 WG2233144 Acenaphthylene U 0.0921 1.00 1 02/26/2024 18:56 WG2233144 Anthracene U 0.0804 1.00 1 02/26/2024 18:56 WG2233144 Benzidine U J3 J4 3.74 10.0 1 02/26/2024 18:56 WG2233144 Benzo(a)anthracene U 0.199 1.00 1 02/26/2024 18:56 WG2233144 Benzo(b)fluoranthene U 0.130 1.00 1 02/26/2024 18:56 WG2233144 Benzo(k)fluoranthene U 0.120 1.00 1 02/26/2024 18:56 WG2233144 Benzo(g,h,i)perylene U 0.121 1.00 1 02/26/2024 18:56 WG2233144 Benzo(a)pyrene U 0.0381 1.00 1 02/26/2024 18:56 WG2233144 Bis(2-chlorethoxy)methane U 0.116 10.0 1 02/26/2024 18:56 WG2233144 Bis(2-chloroethyl)ether U 0.137 10.0 1 02/26/2024 18:56 WG2233144 2,2-Oxybis(1-Chloropropane)U 0.210 10.0 1 02/26/2024 18:56 WG2233144 4-Bromophenyl-phenylether U 0.0877 10.0 1 02/26/2024 18:56 WG2233144 2-Chloronaphthalene U 0.0648 1.00 1 02/26/2024 18:56 WG2233144 4-Chlorophenyl-phenylether U 0.0926 10.0 1 02/26/2024 18:56 WG2233144 Chrysene U 0.130 1.00 1 02/26/2024 18:56 WG2233144 Dibenz(a,h)anthracene U 0.0644 1.00 1 02/26/2024 18:56 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 28 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 28 of 52 SAMPLE RESULTS - 08 L1707788 DUP-A Collected date/time: 02/19/24 16:25 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichlorobenzene U 0.0713 10.0 1 02/26/2024 18:56 WG2233144 1,3-Dichlorobenzene U 0.132 10.0 1 02/26/2024 18:56 WG2233144 1,4-Dichlorobenzene U 0.0942 10.0 1 02/26/2024 18:56 WG2233144 3,3-Dichlorobenzidine U 0.212 10.0 1 02/26/2024 18:56 WG2233144 2,4-Dinitrotoluene U 0.0983 10.0 1 02/26/2024 18:56 WG2233144 2,6-Dinitrotoluene U 0.250 10.0 1 02/26/2024 18:56 WG2233144 Fluoranthene U 0.102 1.00 1 02/26/2024 18:56 WG2233144 Fluorene U 0.0844 1.00 1 02/26/2024 18:56 WG2233144 Hexachlorobenzene U 0.0755 1.00 1 02/26/2024 18:56 WG2233144 Hexachloro-1,3-butadiene U 0.0968 10.0 1 02/26/2024 18:56 WG2233144 Hexachlorocyclopentadiene U 0.0598 10.0 1 02/26/2024 18:56 WG2233144 Hexachloroethane U 0.127 10.0 1 02/26/2024 18:56 WG2233144 Indeno(1,2,3-cd)pyrene U 0.279 1.00 1 02/26/2024 18:56 WG2233144 Isophorone U 0.143 10.0 1 02/26/2024 18:56 WG2233144 Naphthalene U 0.159 1.00 1 02/26/2024 18:56 WG2233144 Nitrobenzene U 0.297 10.0 1 02/26/2024 18:56 WG2233144 n-Nitrosodimethylamine U 0.998 10.0 1 02/26/2024 18:56 WG2233144 n-Nitrosodiphenylamine U 2.37 10.0 1 02/26/2024 18:56 WG2233144 n-Nitrosodi-n-propylamine U 0.261 10.0 1 02/26/2024 18:56 WG2233144 Phenanthrene U 0.112 1.00 1 02/26/2024 18:56 WG2233144 Benzylbutyl phthalate U 0.765 3.00 1 02/26/2024 18:56 WG2233144 Bis(2-ethylhexyl)phthalate U 0.895 3.00 1 02/26/2024 18:56 WG2233144 Di-n-butyl phthalate U 0.453 3.00 1 02/26/2024 18:56 WG2233144 Diethyl phthalate U 0.287 3.00 1 02/26/2024 18:56 WG2233144 Dimethyl phthalate U 0.260 3.00 1 02/26/2024 18:56 WG2233144 Di-n-octyl phthalate U 0.932 3.00 1 02/26/2024 18:56 WG2233144 Pyrene U 0.107 1.00 1 02/26/2024 18:56 WG2233144 1,2,4-Trichlorobenzene U 0.0698 10.0 1 02/26/2024 18:56 WG2233144 4-Chloro-3-methylphenol U 0.131 10.0 1 02/26/2024 18:56 WG2233144 2-Chlorophenol U 0.133 10.0 1 02/26/2024 18:56 WG2233144 2,4-Dichlorophenol U 0.102 10.0 1 02/26/2024 18:56 WG2233144 2,4-Dimethylphenol U 0.0636 10.0 1 02/26/2024 18:56 WG2233144 4,6-Dinitro-2-methylphenol U 1.12 10.0 1 02/26/2024 18:56 WG2233144 2,4-Dinitrophenol U 5.93 10.0 1 02/26/2024 18:56 WG2233144 2-Nitrophenol U 0.117 10.0 1 02/26/2024 18:56 WG2233144 4-Nitrophenol U 0.143 10.0 1 02/26/2024 18:56 WG2233144 Pentachlorophenol U 0.313 10.0 1 02/26/2024 18:56 WG2233144 Phenol U 4.33 10.0 1 02/26/2024 18:56 WG2233144 2,4,6-Trichlorophenol U 0.100 10.0 1 02/26/2024 18:56 WG2233144 (S) Nitrobenzene-d5 72.5 10.0-120 02/23/2024 23:49 WG2230421 (S) 2-Fluorophenol 20.7 10.0-120 02/26/2024 18:56 WG2233144 (S) Phenol-d5 13.6 10.0-120 02/26/2024 18:56 WG2233144 (S) Nitrobenzene-d5 49.8 10.0-127 02/26/2024 18:56 WG2233144 (S) 2-Fluorobiphenyl 56.8 10.0-130 02/26/2024 18:56 WG2233144 (S) 2,4,6-Tribromophenol 39.7 10.0-155 02/26/2024 18:56 WG2233144 (S) p-Terphenyl-d14 50.8 10.0-128 02/26/2024 18:56 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 29 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 29 of 52 SAMPLE RESULTS - 09 L1707788 EQUIP-BLANK-1 Collected date/time: 02/19/24 15:40 Metals (ICPMS) by Method 6020B Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Antimony U 1.03 4.00 1 02/26/2024 17:48 WG2231829 Arsenic U 0.180 2.00 1 02/26/2024 17:48 WG2231829 Barium 0.456 J 0.381 2.00 1 02/26/2024 17:48 WG2231829 Beryllium U 0.190 2.00 1 02/26/2024 17:48 WG2231829 Cadmium U 0.150 1.00 1 02/26/2024 17:48 WG2231829 Chromium U 1.24 2.00 1 02/26/2024 17:48 WG2231829 Copper U 1.51 5.00 1 02/26/2024 17:48 WG2231829 Cobalt U 0.0596 2.00 1 02/26/2024 17:48 WG2231829 Lead U 0.849 2.00 1 02/26/2024 17:48 WG2231829 Manganese 0.963 J 0.704 5.00 1 02/26/2024 17:48 WG2231829 Nickel U 0.816 2.00 1 02/26/2024 17:48 WG2231829 Selenium U 0.300 2.00 1 02/26/2024 17:48 WG2231829 Silver U 0.0700 2.00 1 02/26/2024 17:48 WG2231829 Thallium U 0.121 2.00 1 02/26/2024 17:48 WG2231829 Vanadium U 0.664 5.00 1 02/26/2024 17:48 WG2231829 Zinc 4.02 J 3.02 25.0 1 02/26/2024 17:48 WG2231829 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time Acetone U 11.3 50.0 1 02/26/2024 09:07 WG2233830 Acrolein U C3 2.54 50.0 1 02/26/2024 09:07 WG2233830 Acrylonitrile U 0.671 10.0 1 02/26/2024 09:07 WG2233830 Benzene U 0.0941 1.00 1 02/26/2024 09:07 WG2233830 Bromobenzene U C3 0.118 1.00 1 02/26/2024 09:07 WG2233830 Bromodichloromethane U 0.136 1.00 1 02/26/2024 09:07 WG2233830 Bromoform U 0.129 1.00 1 02/26/2024 09:07 WG2233830 Bromomethane U C3 0.605 5.00 1 02/26/2024 09:07 WG2233830 n-Butylbenzene U 0.157 1.00 1 02/26/2024 09:07 WG2233830 sec-Butylbenzene U 0.125 1.00 1 02/26/2024 09:07 WG2233830 tert-Butylbenzene U 0.127 1.00 1 02/26/2024 09:07 WG2233830 Carbon tetrachloride U 0.128 1.00 1 02/26/2024 09:07 WG2233830 Chlorobenzene U 0.116 1.00 1 02/26/2024 09:07 WG2233830 Chlorodibromomethane U 0.140 1.00 1 02/26/2024 09:07 WG2233830 Chloroethane U C3 0.192 5.00 1 02/26/2024 09:07 WG2233830 Chloroform U 0.111 5.00 1 02/26/2024 09:07 WG2233830 Chloromethane U 0.960 2.50 1 02/26/2024 09:07 WG2233830 2-Chlorotoluene U 0.106 1.00 1 02/26/2024 09:07 WG2233830 4-Chlorotoluene U 0.114 1.00 1 02/26/2024 09:07 WG2233830 1,2-Dibromo-3-Chloropropane U C3 0.276 5.00 1 02/26/2024 09:07 WG2233830 1,2-Dibromoethane U 0.126 1.00 1 02/26/2024 09:07 WG2233830 Dibromomethane U 0.122 1.00 1 02/26/2024 09:07 WG2233830 1,2-Dichlorobenzene U 0.107 1.00 1 02/26/2024 09:07 WG2233830 1,3-Dichlorobenzene U 0.110 1.00 1 02/26/2024 09:07 WG2233830 1,4-Dichlorobenzene U 0.120 1.00 1 02/26/2024 09:07 WG2233830 Dichlorodifluoromethane U 0.374 5.00 1 02/26/2024 09:07 WG2233830 1,1-Dichloroethane U 0.100 1.00 1 02/26/2024 09:07 WG2233830 1,2-Dichloroethane U 0.0819 1.00 1 02/26/2024 09:07 WG2233830 1,1-Dichloroethene U 0.188 1.00 1 02/26/2024 09:07 WG2233830 cis-1,2-Dichloroethene U 0.126 1.00 1 02/26/2024 09:07 WG2233830 trans-1,2-Dichloroethene U 0.149 1.00 1 02/26/2024 09:07 WG2233830 1,2-Dichloropropane U 0.149 1.00 1 02/26/2024 09:07 WG2233830 1,1-Dichloropropene U 0.142 1.00 1 02/26/2024 09:07 WG2233830 1,3-Dichloropropane U 0.110 1.00 1 02/26/2024 09:07 WG2233830 cis-1,3-Dichloropropene U 0.111 1.00 1 02/26/2024 09:07 WG2233830 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 30 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 30 of 52 SAMPLE RESULTS - 09 L1707788 EQUIP-BLANK-1 Collected date/time: 02/19/24 15:40 Volatile Organic Compounds (GC/MS) by Method 8260D Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time trans-1,3-Dichloropropene U 0.118 1.00 1 02/26/2024 09:07 WG2233830 2,2-Dichloropropane U C3 0.161 1.00 1 02/26/2024 09:07 WG2233830 Di-isopropyl ether U 0.105 1.00 1 02/26/2024 09:07 WG2233830 Ethylbenzene U 0.137 1.00 1 02/26/2024 09:07 WG2233830 Hexachloro-1,3-butadiene U 0.337 1.00 1 02/26/2024 09:07 WG2233830 Isopropylbenzene U 0.105 1.00 1 02/26/2024 09:07 WG2233830 p-Isopropyltoluene U 0.120 1.00 1 02/26/2024 09:07 WG2233830 2-Butanone (MEK)1.65 J 1.19 10.0 1 02/26/2024 09:07 WG2233830 Methylene Chloride U 0.430 5.00 1 02/26/2024 09:07 WG2233830 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 1 02/26/2024 09:07 WG2233830 Methyl tert-butyl ether U C3 0.101 1.00 1 02/26/2024 09:07 WG2233830 Naphthalene U 1.00 5.00 1 02/26/2024 09:07 WG2233830 n-Propylbenzene U 0.0993 1.00 1 02/26/2024 09:07 WG2233830 Styrene U 0.118 1.00 1 02/26/2024 09:07 WG2233830 1,1,1,2-Tetrachloroethane U 0.147 1.00 1 02/26/2024 09:07 WG2233830 1,1,2,2-Tetrachloroethane U 0.133 1.00 1 02/26/2024 09:07 WG2233830 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 1 02/26/2024 09:07 WG2233830 Tetrachloroethene U 0.300 1.00 1 02/26/2024 09:07 WG2233830 Toluene U 0.278 1.00 1 02/26/2024 09:07 WG2233830 1,2,3-Trichlorobenzene U 0.230 1.00 1 02/26/2024 09:07 WG2233830 1,2,4-Trichlorobenzene U 0.481 1.00 1 02/26/2024 09:07 WG2233830 1,1,1-Trichloroethane U 0.149 1.00 1 02/26/2024 09:07 WG2233830 1,1,2-Trichloroethane U 0.158 1.00 1 02/26/2024 09:07 WG2233830 Trichloroethene U 0.190 1.00 1 02/26/2024 09:07 WG2233830 Trichlorofluoromethane U 0.160 5.00 1 02/26/2024 09:07 WG2233830 1,2,3-Trichloropropane U 0.237 2.50 1 02/26/2024 09:07 WG2233830 1,2,4-Trimethylbenzene U 0.322 1.00 1 02/26/2024 09:07 WG2233830 1,2,3-Trimethylbenzene U 0.104 1.00 1 02/26/2024 09:07 WG2233830 1,3,5-Trimethylbenzene U 0.104 1.00 1 02/26/2024 09:07 WG2233830 Vinyl chloride U C3 0.234 1.00 1 02/26/2024 09:07 WG2233830 Xylenes, Total U 0.174 3.00 1 02/26/2024 09:07 WG2233830 (S) Toluene-d8 105 80.0-120 02/26/2024 09:07 WG2233830 (S) 4-Bromofluorobenzene 95.9 77.0-126 02/26/2024 09:07 WG2233830 (S) 1,2-Dichloroethane-d4 84.4 70.0-130 02/26/2024 09:07 WG2233830 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,4-Dioxane 0.0534 B J 0.0447 0.400 1 02/24/2024 00:08 WG2230421 Acenaphthene U 0.0886 1.00 1 02/26/2024 19:18 WG2233144 Acenaphthylene U 0.0921 1.00 1 02/26/2024 19:18 WG2233144 Anthracene U 0.0804 1.00 1 02/26/2024 19:18 WG2233144 Benzidine U J3 J4 3.74 10.0 1 02/26/2024 19:18 WG2233144 Benzo(a)anthracene U 0.199 1.00 1 02/26/2024 19:18 WG2233144 Benzo(b)fluoranthene U 0.130 1.00 1 02/26/2024 19:18 WG2233144 Benzo(k)fluoranthene U 0.120 1.00 1 02/26/2024 19:18 WG2233144 Benzo(g,h,i)perylene U 0.121 1.00 1 02/26/2024 19:18 WG2233144 Benzo(a)pyrene U 0.0381 1.00 1 02/26/2024 19:18 WG2233144 Bis(2-chlorethoxy)methane U 0.116 10.0 1 02/26/2024 19:18 WG2233144 Bis(2-chloroethyl)ether U 0.137 10.0 1 02/26/2024 19:18 WG2233144 2,2-Oxybis(1-Chloropropane)U 0.210 10.0 1 02/26/2024 19:18 WG2233144 4-Bromophenyl-phenylether U 0.0877 10.0 1 02/26/2024 19:18 WG2233144 2-Chloronaphthalene U 0.0648 1.00 1 02/26/2024 19:18 WG2233144 4-Chlorophenyl-phenylether U 0.0926 10.0 1 02/26/2024 19:18 WG2233144 Chrysene U 0.130 1.00 1 02/26/2024 19:18 WG2233144 Dibenz(a,h)anthracene U 0.0644 1.00 1 02/26/2024 19:18 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 31 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 31 of 52 SAMPLE RESULTS - 09 L1707788 EQUIP-BLANK-1 Collected date/time: 02/19/24 15:40 Semi Volatile Organic Compounds (GC/MS) by Method 8270E Result Qualifier MDL RDL Dilution Analysis Batch Analyte ug/l ug/l ug/l date / time 1,2-Dichlorobenzene U 0.0713 10.0 1 02/26/2024 19:18 WG2233144 1,3-Dichlorobenzene U 0.132 10.0 1 02/26/2024 19:18 WG2233144 1,4-Dichlorobenzene U 0.0942 10.0 1 02/26/2024 19:18 WG2233144 3,3-Dichlorobenzidine U 0.212 10.0 1 02/26/2024 19:18 WG2233144 2,4-Dinitrotoluene U 0.0983 10.0 1 02/26/2024 19:18 WG2233144 2,6-Dinitrotoluene U 0.250 10.0 1 02/26/2024 19:18 WG2233144 Fluoranthene U 0.102 1.00 1 02/26/2024 19:18 WG2233144 Fluorene U 0.0844 1.00 1 02/26/2024 19:18 WG2233144 Hexachlorobenzene U 0.0755 1.00 1 02/26/2024 19:18 WG2233144 Hexachloro-1,3-butadiene U 0.0968 10.0 1 02/26/2024 19:18 WG2233144 Hexachlorocyclopentadiene U 0.0598 10.0 1 02/26/2024 19:18 WG2233144 Hexachloroethane U 0.127 10.0 1 02/26/2024 19:18 WG2233144 Indeno(1,2,3-cd)pyrene U 0.279 1.00 1 02/26/2024 19:18 WG2233144 Isophorone U 0.143 10.0 1 02/26/2024 19:18 WG2233144 Naphthalene U 0.159 1.00 1 02/26/2024 19:18 WG2233144 Nitrobenzene U 0.297 10.0 1 02/26/2024 19:18 WG2233144 n-Nitrosodimethylamine U 0.998 10.0 1 02/26/2024 19:18 WG2233144 n-Nitrosodiphenylamine U 2.37 10.0 1 02/26/2024 19:18 WG2233144 n-Nitrosodi-n-propylamine U 0.261 10.0 1 02/26/2024 19:18 WG2233144 Phenanthrene U 0.112 1.00 1 02/26/2024 19:18 WG2233144 Benzylbutyl phthalate U 0.765 3.00 1 02/26/2024 19:18 WG2233144 Bis(2-ethylhexyl)phthalate U 0.895 3.00 1 02/26/2024 19:18 WG2233144 Di-n-butyl phthalate U 0.453 3.00 1 02/26/2024 19:18 WG2233144 Diethyl phthalate U 0.287 3.00 1 02/26/2024 19:18 WG2233144 Dimethyl phthalate U 0.260 3.00 1 02/26/2024 19:18 WG2233144 Di-n-octyl phthalate U 0.932 3.00 1 02/26/2024 19:18 WG2233144 Pyrene U 0.107 1.00 1 02/26/2024 19:18 WG2233144 1,2,4-Trichlorobenzene U 0.0698 10.0 1 02/26/2024 19:18 WG2233144 4-Chloro-3-methylphenol U 0.131 10.0 1 02/26/2024 19:18 WG2233144 2-Chlorophenol U 0.133 10.0 1 02/26/2024 19:18 WG2233144 2,4-Dichlorophenol U 0.102 10.0 1 02/26/2024 19:18 WG2233144 2,4-Dimethylphenol U 0.0636 10.0 1 02/26/2024 19:18 WG2233144 4,6-Dinitro-2-methylphenol U 1.12 10.0 1 02/26/2024 19:18 WG2233144 2,4-Dinitrophenol U 5.93 10.0 1 02/26/2024 19:18 WG2233144 2-Nitrophenol U 0.117 10.0 1 02/26/2024 19:18 WG2233144 4-Nitrophenol U 0.143 10.0 1 02/26/2024 19:18 WG2233144 Pentachlorophenol U 0.313 10.0 1 02/26/2024 19:18 WG2233144 Phenol U 4.33 10.0 1 02/26/2024 19:18 WG2233144 2,4,6-Trichlorophenol U 0.100 10.0 1 02/26/2024 19:18 WG2233144 (S) Nitrobenzene-d5 64.6 10.0-120 02/24/2024 00:08 WG2230421 (S) 2-Fluorophenol 24.6 10.0-120 02/26/2024 19:18 WG2233144 (S) Phenol-d5 16.2 10.0-120 02/26/2024 19:18 WG2233144 (S) Nitrobenzene-d5 51.8 10.0-127 02/26/2024 19:18 WG2233144 (S) 2-Fluorobiphenyl 54.2 10.0-130 02/26/2024 19:18 WG2233144 (S) 2,4,6-Tribromophenol 52.3 10.0-155 02/26/2024 19:18 WG2233144 (S) p-Terphenyl-d14 69.5 10.0-128 02/26/2024 19:18 WG2233144 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 32 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 32 of 52 QUALITY CONTROL SUMMARYWG2231829 Metals (ICPMS) by Method 6020B L1707788-01,02,03,04,05,06,07,08,09 Method Blank (MB) (MB) R4038430-1 02/26/24 16:52 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Antimony U 1.03 4.00 Arsenic U 0.180 2.00 Barium U 0.381 2.00 Beryllium U 0.190 2.00 Cadmium U 0.150 1.00 Chromium U 1.24 2.00 Copper U 1.51 5.00 Cobalt U 0.0596 2.00 Lead U 0.849 2.00 Manganese U 0.704 5.00 Nickel U 0.816 2.00 Selenium U 0.300 2.00 Silver U 0.0700 2.00 Thallium U 0.121 2.00 Vanadium U 0.664 5.00 Zinc U 3.02 25.0 Laboratory Control Sample (LCS) (LCS) R4038430-2 02/26/24 16:55 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Antimony 50.0 57.6 115 80.0-120 Arsenic 50.0 51.5 103 80.0-120 Barium 50.0 51.2 102 80.0-120 Beryllium 50.0 52.7 105 80.0-120 Cadmium 50.0 55.1 110 80.0-120 Chromium 50.0 51.5 103 80.0-120 Copper 50.0 49.9 99.8 80.0-120 Cobalt 50.0 52.7 105 80.0-120 Lead 50.0 50.9 102 80.0-120 Manganese 50.0 51.1 102 80.0-120 Nickel 50.0 52.4 105 80.0-120 Selenium 50.0 51.5 103 80.0-120 Silver 50.0 53.3 107 80.0-120 Thallium 50.0 52.1 104 80.0-120 Vanadium 50.0 53.4 107 80.0-120 Zinc 50.0 52.1 104 80.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 33 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 33 of 52 QUALITY CONTROL SUMMARYWG2231829 Metals (ICPMS) by Method 6020B L1707788-01,02,03,04,05,06,07,08,09 L1707788-01 Original Sample (OS) • Matrix Spike (MS) • Matrix Spike Duplicate (MSD) (OS) L1707788-01 02/26/24 16:59 • (MS) R4038430-4 02/26/24 17:05 • (MSD) R4038430-5 02/26/24 17:08 Spike Amount Original Result MS Result MSD Result MS Rec.MSD Rec.Dilution Rec. Limits MS Qualifier MSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l ug/l %%%%% Antimony 50.0 U 55.7 55.3 111 111 1 75.0-125 0.736 20 Arsenic 50.0 U 50.2 49.0 100 98.0 1 75.0-125 2.41 20 Barium 50.0 15.1 62.6 61.4 95.0 92.5 1 75.0-125 2.05 20 Beryllium 50.0 U 52.2 50.4 104 101 1 75.0-125 3.43 20 Cadmium 50.0 U 53.5 52.8 107 106 1 75.0-125 1.21 20 Chromium 50.0 2.12 52.0 49.7 99.7 95.2 1 75.0-125 4.40 20 Cobalt 50.0 0.718 51.5 49.5 102 97.6 1 75.0-125 3.91 20 Lead 50.0 U 49.7 50.0 99.3 100 1 75.0-125 0.668 20 Manganese 50.0 20.2 70.2 68.6 99.8 96.7 1 75.0-125 2.27 20 Nickel 50.0 1.04 51.6 49.7 101 97.3 1 75.0-125 3.84 20 Selenium 50.0 U 51.0 50.8 102 102 1 75.0-125 0.429 20 Silver 50.0 U 52.9 51.8 106 104 1 75.0-125 2.01 20 Thallium 50.0 U 51.7 51.9 103 104 1 75.0-125 0.447 20 Vanadium 50.0 5.78 56.5 54.6 101 97.7 1 75.0-125 3.38 20 Zinc 50.0 3.47 50.6 49.1 94.3 91.3 1 75.0-125 3.01 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 34 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 34 of 52 QUALITY CONTROL SUMMARYWG2232457 Volatile Organic Compounds (GC/MS) by Method 8260D L1707788-01,02,03,04,05,06 Method Blank (MB) (MB) R4038777-2 02/23/24 09:36 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acetone U 11.3 50.0 Acrolein U 2.54 50.0 Benzene U 0.0941 1.00 Bromobenzene U 0.118 1.00 Bromodichloromethane U 0.136 1.00 Bromoform U 0.129 1.00 Bromomethane U 0.605 5.00 n-Butylbenzene U 0.157 1.00 sec-Butylbenzene U 0.125 1.00 tert-Butylbenzene U 0.127 1.00 Carbon tetrachloride U 0.128 1.00 Chlorobenzene U 0.116 1.00 Chlorodibromomethane U 0.140 1.00 Chloroethane U 0.192 5.00 Chloroform U 0.111 5.00 2-Chlorotoluene U 0.106 1.00 4-Chlorotoluene U 0.114 1.00 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1,2-Dibromoethane U 0.126 1.00 Dibromomethane U 0.122 1.00 1,2-Dichlorobenzene U 0.107 1.00 1,3-Dichlorobenzene U 0.110 1.00 1,4-Dichlorobenzene U 0.120 1.00 Dichlorodifluoromethane U 0.374 5.00 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 1,1-Dichloropropene U 0.142 1.00 1,3-Dichloropropane U 0.110 1.00 cis-1,3-Dichloropropene U 0.111 1.00 trans-1,3-Dichloropropene U 0.118 1.00 2,2-Dichloropropane U 0.161 1.00 Ethylbenzene U 0.137 1.00 Hexachloro-1,3-butadiene U 0.337 1.00 Isopropylbenzene U 0.105 1.00 p-Isopropyltoluene U 0.120 1.00 2-Butanone (MEK)U 1.19 10.0 Methylene Chloride U 0.430 5.00 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 35 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 35 of 52 QUALITY CONTROL SUMMARYWG2232457 Volatile Organic Compounds (GC/MS) by Method 8260D L1707788-01,02,03,04,05,06 Method Blank (MB) (MB) R4038777-2 02/23/24 09:36 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 Methyl tert-butyl ether U 0.101 1.00 n-Propylbenzene U 0.0993 1.00 1,1,1,2-Tetrachloroethane U 0.147 1.00 1,1,2,2-Tetrachloroethane U 0.133 1.00 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 Tetrachloroethene U 0.300 1.00 Toluene U 0.278 1.00 1,2,3-Trichlorobenzene U 0.230 1.00 1,2,4-Trichlorobenzene U 0.481 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Trichlorofluoromethane U 0.160 5.00 1,2,3-Trichloropropane U 0.237 2.50 1,2,4-Trimethylbenzene U 0.322 1.00 1,2,3-Trimethylbenzene U 0.104 1.00 1,3,5-Trimethylbenzene U 0.104 1.00 Vinyl chloride U 0.234 1.00 Xylenes, Total U 0.174 3.00 (S) Toluene-d8 103 80.0-120 (S) 4-Bromofluorobenzene 95.3 77.0-126 (S) 1,2-Dichloroethane-d4 115 70.0-130 Laboratory Control Sample (LCS) (LCS) R4038777-1 02/23/24 08:59 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Acetone 25.0 27.4 110 19.0-160 Acrolein 25.0 111 444 10.0-160 J4 Benzene 5.00 4.72 94.4 70.0-123 Bromobenzene 5.00 4.48 89.6 73.0-121 Bromodichloromethane 5.00 5.68 114 75.0-120 Bromoform 5.00 4.70 94.0 68.0-132 Bromomethane 5.00 6.34 127 10.0-160 n-Butylbenzene 5.00 4.19 83.8 73.0-125 sec-Butylbenzene 5.00 4.23 84.6 75.0-125 tert-Butylbenzene 5.00 4.54 90.8 76.0-124 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 36 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 36 of 52 QUALITY CONTROL SUMMARYWG2232457 Volatile Organic Compounds (GC/MS) by Method 8260D L1707788-01,02,03,04,05,06 Laboratory Control Sample (LCS) (LCS) R4038777-1 02/23/24 08:59 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Carbon tetrachloride 5.00 6.18 124 68.0-126 Chlorobenzene 5.00 4.84 96.8 80.0-121 Chlorodibromomethane 5.00 5.03 101 77.0-125 Chloroethane 5.00 4.63 92.6 47.0-150 Chloroform 5.00 5.41 108 73.0-120 2-Chlorotoluene 5.00 4.51 90.2 76.0-123 4-Chlorotoluene 5.00 4.27 85.4 75.0-122 1,2-Dibromo-3-Chloropropane 5.00 4.34 86.8 58.0-134 1,2-Dibromoethane 5.00 4.73 94.6 80.0-122 Dibromomethane 5.00 5.06 101 80.0-120 1,2-Dichlorobenzene 5.00 4.72 94.4 79.0-121 1,3-Dichlorobenzene 5.00 4.49 89.8 79.0-120 1,4-Dichlorobenzene 5.00 4.67 93.4 79.0-120 Dichlorodifluoromethane 5.00 6.04 121 51.0-149 1,1-Dichloroethane 5.00 4.67 93.4 70.0-126 1,2-Dichloroethane 5.00 6.15 123 70.0-128 1,1-Dichloroethene 5.00 5.30 106 71.0-124 cis-1,2-Dichloroethene 5.00 4.73 94.6 73.0-120 trans-1,2-Dichloroethene 5.00 5.15 103 73.0-120 1,1-Dichloropropene 5.00 5.02 100 74.0-126 1,3-Dichloropropane 5.00 4.39 87.8 80.0-120 cis-1,3-Dichloropropene 5.00 4.52 90.4 80.0-123 trans-1,3-Dichloropropene 5.00 4.60 92.0 78.0-124 2,2-Dichloropropane 5.00 6.03 121 58.0-130 Ethylbenzene 5.00 4.75 95.0 79.0-123 Hexachloro-1,3-butadiene 5.00 5.23 105 54.0-138 Isopropylbenzene 5.00 4.57 91.4 76.0-127 p-Isopropyltoluene 5.00 4.55 91.0 76.0-125 2-Butanone (MEK)25.0 22.2 88.8 44.0-160 Methylene Chloride 5.00 4.78 95.6 67.0-120 4-Methyl-2-pentanone (MIBK)25.0 20.8 83.2 68.0-142 Methyl tert-butyl ether 5.00 5.12 102 68.0-125 n-Propylbenzene 5.00 4.33 86.6 77.0-124 1,1,1,2-Tetrachloroethane 5.00 5.03 101 75.0-125 1,1,2,2-Tetrachloroethane 5.00 4.21 84.2 65.0-130 1,1,2-Trichlorotrifluoroethane 5.00 5.15 103 69.0-132 Tetrachloroethene 5.00 5.13 103 72.0-132 Toluene 5.00 4.62 92.4 79.0-120 1,2,3-Trichlorobenzene 5.00 4.57 91.4 50.0-138 1,2,4-Trichlorobenzene 5.00 4.00 80.0 57.0-137 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 37 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 37 of 52 QUALITY CONTROL SUMMARYWG2232457 Volatile Organic Compounds (GC/MS) by Method 8260D L1707788-01,02,03,04,05,06 Laboratory Control Sample (LCS) (LCS) R4038777-1 02/23/24 08:59 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% 1,1,1-Trichloroethane 5.00 6.30 126 73.0-124 J4 1,1,2-Trichloroethane 5.00 4.33 86.6 80.0-120 Trichloroethene 5.00 5.54 111 78.0-124 Trichlorofluoromethane 5.00 6.84 137 59.0-147 1,2,3-Trichloropropane 5.00 4.59 91.8 73.0-130 1,2,4-Trimethylbenzene 5.00 4.29 85.8 76.0-121 1,2,3-Trimethylbenzene 5.00 4.26 85.2 77.0-120 1,3,5-Trimethylbenzene 5.00 4.54 90.8 76.0-122 Vinyl chloride 5.00 4.56 91.2 67.0-131 Xylenes, Total 15.0 13.9 92.7 79.0-123 (S) Toluene-d8 95.7 80.0-120 (S) 4-Bromofluorobenzene 97.2 77.0-126 (S) 1,2-Dichloroethane-d4 123 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 38 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 38 of 52 QUALITY CONTROL SUMMARYWG2233830 Volatile Organic Compounds (GC/MS) by Method 8260D L1707788-07,08,09 Method Blank (MB) (MB) R4038702-3 02/26/24 08:24 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acetone U 11.3 50.0 Acrolein U 2.54 50.0 Acrylonitrile U 0.671 10.0 Benzene U 0.0941 1.00 Bromobenzene U 0.118 1.00 Bromodichloromethane U 0.136 1.00 Bromoform U 0.129 1.00 Bromomethane U 0.605 5.00 n-Butylbenzene U 0.157 1.00 sec-Butylbenzene U 0.125 1.00 tert-Butylbenzene U 0.127 1.00 Carbon tetrachloride U 0.128 1.00 Chlorobenzene U 0.116 1.00 Chlorodibromomethane U 0.140 1.00 Chloroethane U 0.192 5.00 Chloroform U 0.111 5.00 Chloromethane U 0.960 2.50 2-Chlorotoluene U 0.106 1.00 4-Chlorotoluene U 0.114 1.00 1,2-Dibromo-3-Chloropropane U 0.276 5.00 1,2-Dibromoethane U 0.126 1.00 Dibromomethane U 0.122 1.00 1,2-Dichlorobenzene U 0.107 1.00 1,3-Dichlorobenzene U 0.110 1.00 1,4-Dichlorobenzene U 0.120 1.00 Dichlorodifluoromethane U 0.374 5.00 1,1-Dichloroethane U 0.100 1.00 1,2-Dichloroethane U 0.0819 1.00 1,1-Dichloroethene U 0.188 1.00 cis-1,2-Dichloroethene U 0.126 1.00 trans-1,2-Dichloroethene U 0.149 1.00 1,2-Dichloropropane U 0.149 1.00 1,1-Dichloropropene U 0.142 1.00 1,3-Dichloropropane U 0.110 1.00 cis-1,3-Dichloropropene U 0.111 1.00 trans-1,3-Dichloropropene U 0.118 1.00 2,2-Dichloropropane U 0.161 1.00 Di-isopropyl ether U 0.105 1.00 Ethylbenzene U 0.137 1.00 Hexachloro-1,3-butadiene U 0.337 1.00 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 39 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 39 of 52 QUALITY CONTROL SUMMARYWG2233830 Volatile Organic Compounds (GC/MS) by Method 8260D L1707788-07,08,09 Method Blank (MB) (MB) R4038702-3 02/26/24 08:24 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Isopropylbenzene U 0.105 1.00 p-Isopropyltoluene U 0.120 1.00 2-Butanone (MEK)U 1.19 10.0 Methylene Chloride U 0.430 5.00 4-Methyl-2-pentanone (MIBK)U 0.478 10.0 Methyl tert-butyl ether U 0.101 1.00 Naphthalene U 1.00 5.00 n-Propylbenzene U 0.0993 1.00 Styrene U 0.118 1.00 1,1,1,2-Tetrachloroethane U 0.147 1.00 1,1,2,2-Tetrachloroethane U 0.133 1.00 1,1,2-Trichlorotrifluoroethane U 0.180 1.00 Tetrachloroethene U 0.300 1.00 Toluene U 0.278 1.00 1,2,3-Trichlorobenzene U 0.230 1.00 1,2,4-Trichlorobenzene U 0.481 1.00 1,1,1-Trichloroethane U 0.149 1.00 1,1,2-Trichloroethane U 0.158 1.00 Trichloroethene U 0.190 1.00 Trichlorofluoromethane U 0.160 5.00 1,2,3-Trichloropropane U 0.237 2.50 1,2,4-Trimethylbenzene U 0.322 1.00 1,2,3-Trimethylbenzene U 0.104 1.00 1,3,5-Trimethylbenzene U 0.104 1.00 Vinyl chloride U 0.234 1.00 Xylenes, Total U 0.174 3.00 (S) Toluene-d8 105 80.0-120 (S) 4-Bromofluorobenzene 93.8 77.0-126 (S) 1,2-Dichloroethane-d4 84.3 70.0-130 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4038702-1 02/26/24 06:56 • (LCSD) R4038702-2 02/26/24 07:18 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Acetone 25.0 25.0 23.3 100 93.2 19.0-160 7.04 27 Acrolein 25.0 16.9 17.2 67.6 68.8 10.0-160 1.76 26 Acrylonitrile 25.0 24.0 24.7 96.0 98.8 55.0-149 2.87 20 Benzene 5.00 4.43 4.57 88.6 91.4 70.0-123 3.11 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 40 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 40 of 52 QUALITY CONTROL SUMMARYWG2233830 Volatile Organic Compounds (GC/MS) by Method 8260D L1707788-07,08,09 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4038702-1 02/26/24 06:56 • (LCSD) R4038702-2 02/26/24 07:18 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Bromobenzene 5.00 3.82 4.07 76.4 81.4 73.0-121 6.34 20 Bromodichloromethane 5.00 4.08 4.11 81.6 82.2 75.0-120 0.733 20 Bromoform 5.00 4.72 4.80 94.4 96.0 68.0-132 1.68 20 Bromomethane 5.00 3.18 3.33 63.6 66.6 10.0-160 4.61 25 n-Butylbenzene 5.00 4.67 4.96 93.4 99.2 73.0-125 6.02 20 sec-Butylbenzene 5.00 4.60 4.94 92.0 98.8 75.0-125 7.13 20 tert-Butylbenzene 5.00 4.76 4.94 95.2 98.8 76.0-124 3.71 20 Carbon tetrachloride 5.00 4.14 4.28 82.8 85.6 68.0-126 3.33 20 Chlorobenzene 5.00 5.38 5.01 108 100 80.0-121 7.12 20 Chlorodibromomethane 5.00 5.00 4.86 100 97.2 77.0-125 2.84 20 Chloroethane 5.00 3.53 3.40 70.6 68.0 47.0-150 3.75 20 Chloroform 5.00 4.02 4.09 80.4 81.8 73.0-120 1.73 20 Chloromethane 5.00 4.61 4.68 92.2 93.6 41.0-142 1.51 20 2-Chlorotoluene 5.00 4.37 4.49 87.4 89.8 76.0-123 2.71 20 4-Chlorotoluene 5.00 4.31 4.32 86.2 86.4 75.0-122 0.232 20 1,2-Dibromo-3-Chloropropane 5.00 3.73 4.34 74.6 86.8 58.0-134 15.1 20 1,2-Dibromoethane 5.00 5.10 4.67 102 93.4 80.0-122 8.80 20 Dibromomethane 5.00 4.45 4.70 89.0 94.0 80.0-120 5.46 20 1,2-Dichlorobenzene 5.00 4.78 4.69 95.6 93.8 79.0-121 1.90 20 1,3-Dichlorobenzene 5.00 4.65 5.02 93.0 100 79.0-120 7.65 20 1,4-Dichlorobenzene 5.00 4.64 4.82 92.8 96.4 79.0-120 3.81 20 Dichlorodifluoromethane 5.00 4.59 4.54 91.8 90.8 51.0-149 1.10 20 1,1-Dichloroethane 5.00 4.55 4.85 91.0 97.0 70.0-126 6.38 20 1,2-Dichloroethane 5.00 4.16 4.27 83.2 85.4 70.0-128 2.61 20 1,1-Dichloroethene 5.00 4.55 4.74 91.0 94.8 71.0-124 4.09 20 cis-1,2-Dichloroethene 5.00 4.43 4.45 88.6 89.0 73.0-120 0.450 20 trans-1,2-Dichloroethene 5.00 4.40 4.49 88.0 89.8 73.0-120 2.02 20 1,2-Dichloropropane 5.00 4.91 4.85 98.2 97.0 77.0-125 1.23 20 1,1-Dichloropropene 5.00 4.23 3.96 84.6 79.2 74.0-126 6.59 20 1,3-Dichloropropane 5.00 5.03 4.91 101 98.2 80.0-120 2.41 20 cis-1,3-Dichloropropene 5.00 4.27 4.30 85.4 86.0 80.0-123 0.700 20 trans-1,3-Dichloropropene 5.00 4.49 4.28 89.8 85.6 78.0-124 4.79 20 2,2-Dichloropropane 5.00 3.80 3.83 76.0 76.6 58.0-130 0.786 20 Di-isopropyl ether 5.00 4.55 4.66 91.0 93.2 58.0-138 2.39 20 Ethylbenzene 5.00 5.25 4.81 105 96.2 79.0-123 8.75 20 Hexachloro-1,3-butadiene 5.00 5.39 5.52 108 110 54.0-138 2.38 20 Isopropylbenzene 5.00 5.03 5.00 101 100 76.0-127 0.598 20 p-Isopropyltoluene 5.00 4.67 4.88 93.4 97.6 76.0-125 4.40 20 2-Butanone (MEK)25.0 24.0 28.0 96.0 112 44.0-160 15.4 20 Methylene Chloride 5.00 4.48 4.67 89.6 93.4 67.0-120 4.15 20 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 41 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 41 of 52 QUALITY CONTROL SUMMARYWG2233830 Volatile Organic Compounds (GC/MS) by Method 8260D L1707788-07,08,09 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4038702-1 02/26/24 06:56 • (LCSD) R4038702-2 02/26/24 07:18 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% 4-Methyl-2-pentanone (MIBK)25.0 24.6 24.9 98.4 99.6 68.0-142 1.21 20 Methyl tert-butyl ether 5.00 3.80 4.26 76.0 85.2 68.0-125 11.4 20 Naphthalene 5.00 4.27 4.43 85.4 88.6 54.0-135 3.68 20 n-Propylbenzene 5.00 4.42 4.56 88.4 91.2 77.0-124 3.12 20 Styrene 5.00 4.53 4.76 90.6 95.2 73.0-130 4.95 20 1,1,1,2-Tetrachloroethane 5.00 5.02 5.15 100 103 75.0-125 2.56 20 1,1,2,2-Tetrachloroethane 5.00 4.62 4.74 92.4 94.8 65.0-130 2.56 20 1,1,2-Trichlorotrifluoroethane 5.00 4.65 4.65 93.0 93.0 69.0-132 0.000 20 Tetrachloroethene 5.00 5.78 5.61 116 112 72.0-132 2.99 20 Toluene 5.00 4.91 4.96 98.2 99.2 79.0-120 1.01 20 1,2,3-Trichlorobenzene 5.00 4.92 5.26 98.4 105 50.0-138 6.68 20 1,2,4-Trichlorobenzene 5.00 4.68 4.98 93.6 99.6 57.0-137 6.21 20 1,1,1-Trichloroethane 5.00 4.54 4.49 90.8 89.8 73.0-124 1.11 20 1,1,2-Trichloroethane 5.00 5.15 4.84 103 96.8 80.0-120 6.21 20 Trichloroethene 5.00 4.69 4.92 93.8 98.4 78.0-124 4.79 20 Trichlorofluoromethane 5.00 4.96 4.85 99.2 97.0 59.0-147 2.24 20 1,2,3-Trichloropropane 5.00 4.60 4.72 92.0 94.4 73.0-130 2.58 20 1,2,4-Trimethylbenzene 5.00 4.58 4.62 91.6 92.4 76.0-121 0.870 20 1,2,3-Trimethylbenzene 5.00 4.30 4.42 86.0 88.4 77.0-120 2.75 20 1,3,5-Trimethylbenzene 5.00 4.61 4.61 92.2 92.2 76.0-122 0.000 20 Vinyl chloride 5.00 3.35 3.39 67.0 67.8 67.0-131 1.19 20 Xylenes, Total 15.0 14.9 14.8 99.3 98.7 79.0-123 0.673 20 (S) Toluene-d8 109 106 80.0-120 (S) 4-Bromofluorobenzene 98.6 95.4 77.0-126 (S) 1,2-Dichloroethane-d4 85.0 86.4 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 42 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 42 of 52 QUALITY CONTROL SUMMARYWG2235111 Volatile Organic Compounds (GC/MS) by Method 8260D L1707788-01,02,03,04,05,06 Method Blank (MB) (MB) R4039703-2 02/28/24 22:43 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acrylonitrile U 0.671 10.0 Chloromethane U 0.960 2.50 1,2-Dichloropropane U 0.149 1.00 Di-isopropyl ether U 0.105 1.00 Naphthalene U 1.00 5.00 Styrene U 0.118 1.00 (S) Toluene-d8 105 80.0-120 (S) 4-Bromofluorobenzene 97.2 77.0-126 (S) 1,2-Dichloroethane-d4 93.3 70.0-130 Laboratory Control Sample (LCS) (LCS) R4039703-1 02/28/24 21:58 Spike Amount LCS Result LCS Rec.Rec. Limits LCS Qualifier Analyte ug/l ug/l %% Acrylonitrile 25.0 24.5 98.0 55.0-149 Chloromethane 5.00 5.13 103 41.0-142 1,2-Dichloropropane 5.00 5.41 108 77.0-125 Di-isopropyl ether 5.00 4.62 92.4 58.0-138 Naphthalene 5.00 4.41 88.2 54.0-135 Styrene 5.00 5.13 103 73.0-130 (S) Toluene-d8 105 80.0-120 (S) 4-Bromofluorobenzene 101 77.0-126 (S) 1,2-Dichloroethane-d4 96.5 70.0-130 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 43 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 43 of 52 QUALITY CONTROL SUMMARYWG2230421 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1707788-01,02,03,04,05,06,07,08,09 Method Blank (MB) (MB) R4038542-3 02/23/24 19:39 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l 1,4-Dioxane 0.0772 J 0.0447 0.400 (S) Nitrobenzene-d5 67.1 10.0-120 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4038542-1 02/23/24 19:01 • (LCSD) R4038542-2 02/23/24 19:20 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% 1,4-Dioxane 50.0 52.0 52.3 104 105 73.0-146 0.575 20 (S) Nitrobenzene-d5 77.6 65.3 10.0-120 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 44 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 44 of 52 QUALITY CONTROL SUMMARYWG2233144 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1707788-01,02,03,04,05,06,07,08,09 Method Blank (MB) (MB) R4038679-4 02/26/24 14:35 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Acenaphthene U 0.0886 1.00 Acenaphthylene U 0.0921 1.00 Anthracene U 0.0804 1.00 Benzidine U 3.74 10.0 Benzo(a)anthracene U 0.199 1.00 Benzo(b)fluoranthene U 0.130 1.00 Benzo(k)fluoranthene U 0.120 1.00 Benzo(g,h,i)perylene U 0.121 1.00 Benzo(a)pyrene U 0.0381 1.00 Bis(2-chlorethoxy)methane U 0.116 10.0 Bis(2-chloroethyl)ether U 0.137 10.0 2,2-Oxybis(1-Chloropropane)U 0.210 10.0 4-Bromophenyl-phenylether U 0.0877 10.0 2-Chloronaphthalene U 0.0648 1.00 4-Chlorophenyl-phenylether U 0.0926 10.0 Chrysene U 0.130 1.00 Dibenz(a,h)anthracene U 0.0644 1.00 1,2-Dichlorobenzene U 0.0713 10.0 1,3-Dichlorobenzene U 0.132 10.0 1,4-Dichlorobenzene U 0.0942 10.0 3,3-Dichlorobenzidine U 0.212 10.0 2,4-Dinitrotoluene U 0.0983 10.0 2,6-Dinitrotoluene U 0.250 10.0 Fluoranthene U 0.102 1.00 Fluorene U 0.0844 1.00 Hexachlorobenzene U 0.0755 1.00 Hexachloro-1,3-butadiene U 0.0968 10.0 Hexachlorocyclopentadiene U 0.0598 10.0 Hexachloroethane U 0.127 10.0 Indeno(1,2,3-cd)pyrene U 0.279 1.00 Isophorone U 0.143 10.0 Naphthalene U 0.159 1.00 Nitrobenzene U 0.297 10.0 n-Nitrosodimethylamine U 0.998 10.0 n-Nitrosodiphenylamine U 2.37 10.0 n-Nitrosodi-n-propylamine U 0.261 10.0 Phenanthrene U 0.112 1.00 Benzylbutyl phthalate U 0.765 3.00 Bis(2-ethylhexyl)phthalate U 0.895 3.00 Di-n-butyl phthalate U 0.453 3.00 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 45 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 45 of 52 QUALITY CONTROL SUMMARYWG2233144 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1707788-01,02,03,04,05,06,07,08,09 Method Blank (MB) (MB) R4038679-4 02/26/24 14:35 MB Result MB Qualifier MB MDL MB RDL Analyte ug/l ug/l ug/l Diethyl phthalate U 0.287 3.00 Dimethyl phthalate U 0.260 3.00 Di-n-octyl phthalate U 0.932 3.00 Pyrene U 0.107 1.00 1,2,4-Trichlorobenzene U 0.0698 10.0 4-Chloro-3-methylphenol U 0.131 10.0 2-Chlorophenol U 0.133 10.0 2,4-Dichlorophenol U 0.102 10.0 2,4-Dimethylphenol U 0.0636 10.0 4,6-Dinitro-2-methylphenol U 1.12 10.0 2,4-Dinitrophenol U 5.93 10.0 2-Nitrophenol U 0.117 10.0 4-Nitrophenol U 0.143 10.0 Pentachlorophenol U 0.313 10.0 Phenol U 4.33 10.0 2,4,6-Trichlorophenol U 0.100 10.0 (S) 2-Fluorophenol 30.9 10.0-120 (S) Phenol-d5 18.0 10.0-120 (S) Nitrobenzene-d5 62.3 10.0-127 (S) 2-Fluorobiphenyl 69.0 10.0-130 (S) 2,4,6-Tribromophenol 60.0 10.0-155 (S) p-Terphenyl-d14 75.1 10.0-128 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4038679-1 02/26/24 13:30 • (LCSD) R4038679-2 02/26/24 13:52 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% Acenaphthene 50.0 36.6 36.1 73.2 72.2 41.0-120 1.38 22 Acenaphthylene 50.0 38.0 38.0 76.0 76.0 43.0-120 0.000 22 Anthracene 50.0 42.2 40.2 84.4 80.4 45.0-120 4.85 20 Benzidine 100 12.8 5.02 12.8 5.02 10.0-120 J3 J4 87.3 36 Benzo(a)anthracene 50.0 43.2 41.8 86.4 83.6 47.0-120 3.29 20 Benzo(b)fluoranthene 50.0 42.8 43.4 85.6 86.8 46.0-120 1.39 20 Benzo(k)fluoranthene 50.0 42.5 42.4 85.0 84.8 46.0-120 0.236 21 Benzo(g,h,i)perylene 50.0 40.0 39.2 80.0 78.4 48.0-121 2.02 20 Benzo(a)pyrene 50.0 37.9 37.7 75.8 75.4 47.0-120 0.529 20 Bis(2-chlorethoxy)methane 50.0 26.0 26.9 52.0 53.8 33.0-120 3.40 24 Bis(2-chloroethyl)ether 50.0 28.8 31.3 57.6 62.6 23.0-120 8.32 33 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 46 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 46 of 52 QUALITY CONTROL SUMMARYWG2233144 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1707788-01,02,03,04,05,06,07,08,09 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4038679-1 02/26/24 13:30 • (LCSD) R4038679-2 02/26/24 13:52 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% 2,2-Oxybis(1-Chloropropane)50.0 28.5 30.7 57.0 61.4 28.0-120 7.43 31 4-Bromophenyl-phenylether 50.0 39.6 38.6 79.2 77.2 45.0-120 2.56 20 2-Chloronaphthalene 50.0 33.4 33.5 66.8 67.0 37.0-120 0.299 25 4-Chlorophenyl-phenylether 50.0 37.6 37.5 75.2 75.0 44.0-120 0.266 20 Chrysene 50.0 40.2 39.9 80.4 79.8 48.0-120 0.749 20 Dibenz(a,h)anthracene 50.0 40.1 39.8 80.2 79.6 47.0-120 0.751 20 1,2-Dichlorobenzene 50.0 27.5 28.9 55.0 57.8 20.0-120 4.96 34 1,3-Dichlorobenzene 50.0 27.4 29.0 54.8 58.0 17.0-120 5.67 35 1,4-Dichlorobenzene 50.0 29.4 31.1 58.8 62.2 18.0-120 5.62 34 3,3-Dichlorobenzidine 100 86.6 75.4 86.6 75.4 44.0-120 13.8 20 2,4-Dinitrotoluene 50.0 37.3 37.4 74.6 74.8 49.0-124 0.268 20 2,6-Dinitrotoluene 50.0 37.7 37.1 75.4 74.2 46.0-120 1.60 21 Fluoranthene 50.0 42.2 40.3 84.4 80.6 51.0-120 4.61 20 Fluorene 50.0 38.8 38.5 77.6 77.0 47.0-120 0.776 20 Hexachlorobenzene 50.0 39.2 37.8 78.4 75.6 44.0-120 3.64 20 Hexachloro-1,3-butadiene 50.0 21.3 22.5 42.6 45.0 19.0-120 5.48 32 Hexachlorocyclopentadiene 50.0 14.0 14.7 28.0 29.4 15.0-120 4.88 31 Hexachloroethane 50.0 27.2 28.4 54.4 56.8 15.0-120 4.32 37 Indeno(1,2,3-cd)pyrene 50.0 39.9 40.0 79.8 80.0 49.0-122 0.250 20 Isophorone 50.0 28.3 29.2 56.6 58.4 36.0-120 3.13 23 Naphthalene 50.0 26.4 27.8 52.8 55.6 27.0-120 5.17 27 Nitrobenzene 50.0 24.0 25.1 48.0 50.2 27.0-120 4.48 29 n-Nitrosodimethylamine 50.0 15.3 17.1 30.6 34.2 10.0-120 11.1 40 n-Nitrosodiphenylamine 50.0 40.4 38.0 80.8 76.0 47.0-120 6.12 20 n-Nitrosodi-n-propylamine 50.0 32.1 34.2 64.2 68.4 31.0-120 6.33 28 Phenanthrene 50.0 40.1 38.6 80.2 77.2 46.0-120 3.81 20 Benzylbutyl phthalate 50.0 38.6 37.8 77.2 75.6 43.0-121 2.09 20 Bis(2-ethylhexyl)phthalate 50.0 39.6 39.2 79.2 78.4 43.0-122 1.02 20 Di-n-butyl phthalate 50.0 45.6 43.5 91.2 87.0 49.0-121 4.71 20 Diethyl phthalate 50.0 40.6 40.8 81.2 81.6 48.0-122 0.491 20 Dimethyl phthalate 50.0 37.9 37.9 75.8 75.8 48.0-120 0.000 20 Di-n-octyl phthalate 50.0 38.1 37.8 76.2 75.6 42.0-125 0.791 20 Pyrene 50.0 43.0 41.9 86.0 83.8 47.0-120 2.59 20 1,2,4-Trichlorobenzene 50.0 24.0 25.4 48.0 50.8 24.0-120 5.67 29 4-Chloro-3-methylphenol 50.0 20.5 24.0 41.0 48.0 40.0-120 15.7 21 2-Chlorophenol 50.0 19.1 23.8 38.2 47.6 25.0-120 21.9 35 2,4-Dichlorophenol 50.0 21.8 26.1 43.6 52.2 36.0-120 18.0 26 2,4-Dimethylphenol 50.0 17.4 22.0 34.8 44.0 33.0-120 23.4 26 4,6-Dinitro-2-methylphenol 50.0 35.4 37.4 70.8 74.8 38.0-138 5.49 25 2,4-Dinitrophenol 50.0 24.3 30.1 48.6 60.2 10.0-120 21.3 39 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 47 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 47 of 52 QUALITY CONTROL SUMMARYWG2233144 Semi Volatile Organic Compounds (GC/MS) by Method 8270E L1707788-01,02,03,04,05,06,07,08,09 Laboratory Control Sample (LCS) • Laboratory Control Sample Duplicate (LCSD) (LCS) R4038679-1 02/26/24 13:30 • (LCSD) R4038679-2 02/26/24 13:52 Spike Amount LCS Result LCSD Result LCS Rec.LCSD Rec.Rec. Limits LCS Qualifier LCSD Qualifier RPD RPD Limits Analyte ug/l ug/l ug/l %%%%% 2-Nitrophenol 50.0 23.3 27.7 46.6 55.4 31.0-120 17.3 29 4-Nitrophenol 50.0 9.58 10.7 19.2 21.4 10.0-120 11.0 33 Pentachlorophenol 50.0 23.1 25.6 46.2 51.2 23.0-120 10.3 25 Phenol 50.0 8.20 9.67 16.4 19.3 10.0-120 16.5 36 2,4,6-Trichlorophenol 50.0 30.5 33.8 61.0 67.6 42.0-120 10.3 23 (S) 2-Fluorophenol 22.4 27.2 10.0-120 (S) Phenol-d5 16.3 19.7 10.0-120 (S) Nitrobenzene-d5 44.8 47.3 10.0-127 (S) 2-Fluorobiphenyl 61.1 62.1 10.0-130 (S) 2,4,6-Tribromophenol 65.5 67.0 10.0-155 (S) p-Terphenyl-d14 71.5 70.7 10.0-128 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 48 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 48 of 52 GLOSSARY OF TERMS Guide to Reading and Understanding Your Laboratory Report The information below is designed to better explain the various terms used in your report of analytical results from the Laboratory. This is not intended as a comprehensive explanation, and if you have additional questions please contact your project representative. Results Disclaimer - Information that may be provided by the customer, and contained within this report, include Permit Limits, Project Name, Sample ID, Sample Matrix, Sample Preservation, Field Blanks, Field Spikes, Field Duplicates, On-Site Data, Sampling Collection Dates/Times, and Sampling Location. Results relate to the accuracy of this information provided, and as the samples are received. Abbreviations and Definitions MDL Method Detection Limit. RDL Reported Detection Limit. Rec.Recovery. RPD Relative Percent Difference. SDG Sample Delivery Group. (S)Surrogate (Surrogate Standard) - Analytes added to every blank, sample, Laboratory Control Sample/Duplicate and Matrix Spike/Duplicate; used to evaluate analytical efficiency by measuring recovery. Surrogates are not expected to be detected in all environmental media. U Not detected at the Reporting Limit (or MDL where applicable). Analyte The name of the particular compound or analysis performed. Some Analyses and Methods will have multiple analytes reported. Dilution If the sample matrix contains an interfering material, the sample preparation volume or weight values differ from the standard, or if concentrations of analytes in the sample are higher than the highest limit of concentration that the laboratory can accurately report, the sample may be diluted for analysis. If a value different than 1 is used in this field, the result reported has already been corrected for this factor. Limits These are the target % recovery ranges or % difference value that the laboratory has historically determined as normal for the method and analyte being reported. Successful QC Sample analysis will target all analytes recovered or duplicated within these ranges. Original Sample The non-spiked sample in the prep batch used to determine the Relative Percent Difference (RPD) from a quality control sample. The Original Sample may not be included within the reported SDG. Qualifier This column provides a letter and/or number designation that corresponds to additional information concerning the result reported. If a Qualifier is present, a definition per Qualifier is provided within the Glossary and Definitions page and potentially a discussion of possible implications of the Qualifier in the Case Narrative if applicable. Result The actual analytical final result (corrected for any sample specific characteristics) reported for your sample. If there was no measurable result returned for a specific analyte, the result in this column may state “ND” (Not Detected) or “BDL” (Below Detectable Levels). The information in the results column should always be accompanied by either an MDL (Method Detection Limit) or RDL (Reporting Detection Limit) that defines the lowest value that the laboratory could detect or report for this analyte. Uncertainty (Radiochemistry)Confidence level of 2 sigma. Case Narrative (Cn) A brief discussion about the included sample results, including a discussion of any non-conformances to protocol observed either at sample receipt by the laboratory from the field or during the analytical process. If present, there will be a section in the Case Narrative to discuss the meaning of any data qualifiers used in the report. Quality Control Summary (Qc) This section of the report includes the results of the laboratory quality control analyses required by procedure or analytical methods to assist in evaluating the validity of the results reported for your samples. These analyses are not being performed on your samples typically, but on laboratory generated material. Sample Chain of Custody (Sc) This is the document created in the field when your samples were initially collected. This is used to verify the time and date of collection, the person collecting the samples, and the analyses that the laboratory is requested to perform. This chain of custody also documents all persons (excluding commercial shippers) that have had control or possession of the samples from the time of collection until delivery to the laboratory for analysis. Sample Results (Sr) This section of your report will provide the results of all testing performed on your samples. These results are provided by sample ID and are separated by the analyses performed on each sample. The header line of each analysis section for each sample will provide the name and method number for the analysis reported. Sample Summary (Ss)This section of the Analytical Report defines the specific analyses performed for each sample ID, including the dates and times of preparation and/or analysis. Qualifier Description B The same analyte is found in the associated blank. C3 The reported concentration is an estimate. The continuing calibration standard associated with this data responded low. Method sensitivity check is acceptable. J The identification of the analyte is acceptable; the reported value is an estimate. J1 Surrogate recovery limits have been exceeded; values are outside upper control limits. J3 The associated batch QC was outside the established quality control range for precision. J4 The associated batch QC was outside the established quality control range for accuracy. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 49 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 49 of 52 Pace Analytical National 12065 Lebanon Rd Mount Juliet, TN 37122 Alabama 40660 Nebraska NE-OS-15-05 Alaska 17-026 Nevada TN000032021-1 Arizona AZ0612 New Hampshire 2975 Arkansas 88-0469 New Jersey–NELAP TN002 California 2932 New Mexico ¹TN00003 Colorado TN00003 New York 11742 Connecticut PH-0197 North Carolina Env375 Florida E87487 North Carolina ¹DW21704 Georgia NELAP North Carolina ³41 Georgia ¹923 North Dakota R-140 Idaho TN00003 Ohio–VAP CL0069 Illinois 200008 Oklahoma 9915 Indiana C-TN-01 Oregon TN200002 Iowa 364 Pennsylvania 68-02979 Kansas E-10277 Rhode Island LAO00356 Kentucky ¹ ⁶KY90010 South Carolina 84004002 Kentucky ²16 South Dakota n/a Louisiana AI30792 Tennessee ¹ ⁴2006 Louisiana LA018 Texas T104704245-20-18 Maine TN00003 Texas ⁵LAB0152 Maryland 324 Utah TN000032021-11 Massachusetts M-TN003 Vermont VT2006 Michigan 9958 Virginia 110033 Minnesota 047-999-395 Washington C847 Mississippi TN00003 West Virginia 233 Missouri 340 Wisconsin 998093910 Montana CERT0086 Wyoming A2LA A2LA – ISO 17025 1461.01 AIHA-LAP,LLC EMLAP 100789 A2LA – ISO 17025 ⁵1461.02 DOD 1461.01 Canada 1461.01 USDA P330-15-00234 EPA–Crypto TN00003 ACCREDITATIONS & LOCATIONS ¹ Drinking Water ² Underground Storage Tanks ³ Aquatic Toxicity ⁴ Chemical/Microbiological ⁵ Mold ⁶ Wastewater n/a Accreditation not applicable * Not all certifications held by the laboratory are applicable to the results reported in the attached report. * Accreditation is only applicable to the test methods specified on each scope of accreditation held by Pace Analytical. 1 Cp 2Tc 3Ss 4Cn 5Sr 6Qc 7Gl 8Al 9Sc ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 00:40 50 of 52 ACCOUNT:PROJECT:SDG:DATE/TIME:PAGE: ATC Group Services LLC L1707788 04/05/24 01:11 50 of 52 Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W Pre-Regulatory Landfill Unit APPENDIX D RISK CALCULATORS - GROUNDWATER Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-01 Description of Exposure Point Concentration Selection: NOTE: If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations Exposure Point Concentration (ug/L) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 15.1 7440-39-3 Barium ug/L 2.12 18540-29-9 Chromium(VI)ug/L 0.718 7440-48-4 Cobalt ug/L 20.2 7439-96-5 Manganese (Non-diet)ug/L 1.04 7440-02-0 Nickel Soluble Salts ug/L 5.78 7440-62-2 Vanadium and Compounds ug/L 3.47 7440-66-6 Zinc and Compounds ug/L Input Form 2B Groundwater Exposure Point Concentration Table Concentrations from sample MW-01. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Resident Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-01 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk* Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient* Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 15.1 15.1 15.1 3.8E-03 2.4E-04 4.0E-03 18540-29-9 Chromium(VI)2.12 2.12 2.12 4.2E-05 1.8E-05 6.1E-05 3.5E-02 1.2E-02 4.8E-02 7440-48-4 Cobalt 0.718 0.718 0.718 1.2E-01 2.1E-04 1.2E-01 7439-96-5 Manganese (Non-diet)20.2 20.2 20.2 4.2E-02 4.6E-03 4.7E-02 7440-02-0 Nickel Soluble Salts 1.04 1.04 1.04 2.6E-03 5.7E-05 2.7E-03 7440-62-2 Vanadium and Compounds 5.78 5.78 5.78 5.8E-02 9.8E-03 6.7E-02 7440-66-6 Zinc and Compounds 3.47 3.47 3.47 5.8E-04 1.5E-06 5.8E-04 Cumulative:6.1E-05 2.9E-01 Output Form 2B ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Non-Residential Worker Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-01 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 15.1 15.1 15.1 5.4E-04 1.2E-04 6.6E-04 18540-29-9 Chromium(VI)2.12 2.12 2.12 2.7E-06 3.4E-06 6.1E-06 5.0E-03 6.4E-03 1.1E-02 7440-48-4 Cobalt 0.718 0.718 0.718 1.7E-02 1.1E-04 1.7E-02 7439-96-5 Manganese (Non-diet)20.2 20.2 20.2 6.0E-03 2.4E-03 8.4E-03 7440-02-0 Nickel Soluble Salts 1.04 1.04 1.04 3.7E-04 2.9E-05 4.0E-04 7440-62-2 Vanadium and Compounds 5.78 5.78 5.78 8.2E-03 5.0E-03 1.3E-02 7440-66-6 Zinc and Compounds 3.47 3.47 3.47 8.2E-05 7.8E-07 8.3E-05 Cumulative:6.1E-06 5.1E-02 Output Form 2D ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-01 CAS #Chemical Name: Groundwater Concentration (ug/L) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 15.1 -1.0E-01 18540-29-9 Chromium(VI)2.12 1.2E-05 2.1E-02 7440-48-4 Cobalt 0.718 3.1E-04 1.3E-03 7439-96-5 Manganese (Non-diet)20.2 -1.0E-02 7440-02-0 Nickel Soluble Salts 1.04 1.1E-02 2.9E-03 7440-62-2 Vanadium and Compounds 5.78 -2.1E-02 7440-66-6 Zinc and Compounds 3.47 -- Cumulative:0.0E+00 0.0E+00 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3A Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-01 CAS #Chemical Name: Groundwater Concentration (ug/L) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 15.1 -4.4E-01 18540-29-9 Chromium(VI)2.12 1.5E-04 8.8E-02 7440-48-4 Cobalt 0.718 1.4E-03 5.3E-03 7439-96-5 Manganese (Non-diet)20.2 -4.4E-02 7440-02-0 Nickel Soluble Salts 1.04 4.7E-02 1.2E-02 7440-62-2 Vanadium and Compounds 5.78 -8.8E-02 7440-66-6 Zinc and Compounds 3.47 -- Cumulative:0.0E+00 0.0E+00 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3D Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-02 Description of Exposure Point Concentration Selection: NOTE: If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations Exposure Point Concentration (ug/L) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 33.2 7440-39-3 Barium ug/L 0.556 7440-48-4 Cobalt ug/L 0.066 123-91-1 Dioxane, 1,4-ug/L 65.1 7439-96-5 Manganese (Non-diet)ug/L 1.06 7440-02-0 Nickel Soluble Salts ug/L 0.0925 83-32-9 ~Acenaphthene ug/L 2.24 91-20-3 ~Naphthalene ug/L 1.1 7440-62-2 Vanadium and Compounds ug/L Input Form 2B Groundwater Exposure Point Concentration Table Concentrations from sample MW-02. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Resident Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-02 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk* Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient* Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 33.2 33.2 33.2 8.3E-03 5.2E-04 8.8E-03 7440-48-4 Cobalt 0.556 0.556 0.556 9.2E-02 1.6E-04 9.3E-02 123-91-1 Dioxane, 1,4-0.066 0.066 0.066 8.5E-08 2.9E-10 5.9E-08 1.4E-07 1.1E-04 3.5E-07 1.1E-03 1.2E-03 7439-96-5 Manganese (Non-diet)65.1 65.1 65.1 1.4E-01 1.5E-02 1.5E-01 7440-02-0 Nickel Soluble Salts 1.06 1.06 1.06 2.6E-03 5.8E-05 2.7E-03 83-32-9 ~Acenaphthene 0.0925 0.0925 0.0925 7.7E-05 9.6E-05 1.7E-04 91-20-3 ~Naphthalene 2.24 2.24 2.24 3.5E-06 2.1E-06 1.4E-05 1.9E-05 5.6E-03 3.2E-03 3.6E-01 3.7E-01 7440-62-2 Vanadium and Compounds 1.1 1.1 1.1 1.1E-02 1.9E-03 1.3E-02 Cumulative:1.9E-05 6.4E-01 Output Form 2B ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Non-Residential Worker Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-02 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 33.2 33.2 33.2 1.2E-03 2.7E-04 1.4E-03 7440-48-4 Cobalt 0.556 0.556 0.556 1.3E-02 8.4E-05 1.3E-02 123-91-1 Dioxane, 1,4-0.066 0.066 0.066 1.7E-08 1.7E-10 1.3E-08 3.0E-08 1.6E-05 1.6E-07 2.5E-04 2.7E-04 7439-96-5 Manganese (Non-diet)65.1 65.1 65.1 1.9E-02 7.6E-03 2.7E-02 7440-02-0 Nickel Soluble Salts 1.06 1.06 1.06 3.8E-04 3.0E-05 4.1E-04 83-32-9 ~Acenaphthene 0.0925 0.0925 0.0925 1.1E-05 4.4E-05 5.5E-05 91-20-3 ~Naphthalene 2.24 2.24 2.24 6.8E-07 1.3E-06 3.1E-06 5.0E-06 8.0E-04 1.5E-03 8.5E-02 8.8E-02 7440-62-2 Vanadium and Compounds 1.1 1.1 1.1 1.6E-03 9.5E-04 2.5E-03 Cumulative:5.1E-06 1.3E-01 Output Form 2D ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-02 CAS #Chemical Name: Groundwater Concentration (ug/L) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 33.2 -1.0E-01 7440-48-4 Cobalt 0.556 3.1E-04 1.3E-03 123-91-1 Dioxane, 1,4-0.066 5.6E-01 6.3E+00 2.3E-11 4.1E-07 7439-96-5 Manganese (Non-diet)65.1 -1.0E-02 7440-02-0 Nickel Soluble Salts 1.06 1.1E-02 2.9E-03 83-32-9 ~Acenaphthene 0.0925 -- 91-20-3 ~Naphthalene 2.24 8.3E-02 6.3E-01 4.9E-07 1.3E-02 7440-62-2 Vanadium and Compounds 1.1 -2.1E-02 Cumulative:4.9E-07 1.3E-02 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3A Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-02 CAS #Chemical Name: Groundwater Concentration (ug/L) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 33.2 -4.4E-01 7440-48-4 Cobalt 0.556 1.4E-03 5.3E-03 123-91-1 Dioxane, 1,4-0.066 1.29518E-05 2.5E+00 2.6E+01 5.3E-12 9.9E-08 7439-96-5 Manganese (Non-diet)65.1 -4.4E-02 7440-02-0 Nickel Soluble Salts 1.06 4.7E-02 1.2E-02 83-32-9 ~Acenaphthene 0.0925 0.00069583 -- 91-20-3 ~Naphthalene 2.24 0.040294358 3.6E-01 2.6E+00 1.1E-07 3.1E-03 7440-62-2 Vanadium and Compounds 1.1 -8.8E-02 Cumulative:1.1E-07 3.1E-03 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3D Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: DUP-A (MW-02) Description of Exposure Point Concentration Selection: NOTE: If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations Exposure Point Concentration (ug/L) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 34 7440-39-3 Barium ug/L 0.525 7440-48-4 Cobalt ug/L 64.8 7439-96-5 Manganese (Non-diet)ug/L 1.11 7440-02-0 Nickel Soluble Salts ug/L 1.13 7440-62-2 Vanadium and Compounds ug/L Input Form 2B Groundwater Exposure Point Concentration Table Concentrations from sample DUP-A (MW-02). North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Resident Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: DUP-A (MW-02) * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk* Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient* Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 34 34 34 8.5E-03 5.3E-04 9.0E-03 7440-48-4 Cobalt 0.525 0.525 0.525 8.7E-02 1.5E-04 8.7E-02 7439-96-5 Manganese (Non-diet)64.8 64.8 64.8 1.3E-01 1.5E-02 1.5E-01 7440-02-0 Nickel Soluble Salts 1.11 1.11 1.11 2.8E-03 6.1E-05 2.8E-03 7440-62-2 Vanadium and Compounds 1.13 1.13 1.13 1.1E-02 1.9E-03 1.3E-02 Cumulative:0.0E+00 2.6E-01 Output Form 2B ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Non-Residential Worker Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: DUP-A (MW-02) * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 34 34 34 1.2E-03 2.7E-04 1.5E-03 7440-48-4 Cobalt 0.525 0.525 0.525 1.2E-02 7.9E-05 1.3E-02 7439-96-5 Manganese (Non-diet)64.8 64.8 64.8 1.9E-02 7.6E-03 2.7E-02 7440-02-0 Nickel Soluble Salts 1.11 1.11 1.11 3.9E-04 3.1E-05 4.3E-04 7440-62-2 Vanadium and Compounds 1.13 1.13 1.13 1.6E-03 9.8E-04 2.6E-03 Cumulative:0.0E+00 4.4E-02 Output Form 2D ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: DUP-A (MW-02) CAS #Chemical Name: Groundwater Concentration (ug/L) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 34 -1.0E-01 7440-48-4 Cobalt 0.525 3.1E-04 1.3E-03 7439-96-5 Manganese (Non-diet)64.8 -1.0E-02 7440-02-0 Nickel Soluble Salts 1.11 1.1E-02 2.9E-03 7440-62-2 Vanadium and Compounds 1.13 -2.1E-02 Cumulative:0.0E+00 0.0E+00 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3A Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: DUP-A (MW-02) CAS #Chemical Name: Groundwater Concentration (ug/L) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 34 -4.4E-01 7440-48-4 Cobalt 0.525 1.4E-03 5.3E-03 7439-96-5 Manganese (Non-diet)64.8 -4.4E-02 7440-02-0 Nickel Soluble Salts 1.11 4.7E-02 1.2E-02 7440-62-2 Vanadium and Compounds 1.13 -8.8E-02 Cumulative:0.0E+00 0.0E+00 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3D Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-03 Description of Exposure Point Concentration Selection: NOTE: If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations Exposure Point Concentration (ug/L) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 94.8 7440-39-3 Barium ug/L 0.316 7440-48-4 Cobalt ug/L 0.117 123-91-1 Dioxane, 1,4-ug/L 24.8 7439-96-5 Manganese (Non-diet)ug/L 1.37 7440-62-2 Vanadium and Compounds ug/L Input Form 2B Groundwater Exposure Point Concentration Table Concentrations from sample MW-03. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Resident Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-03 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk* Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient* Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 94.8 94.8 94.8 2.4E-02 1.5E-03 2.5E-02 7440-48-4 Cobalt 0.316 0.316 0.316 5.3E-02 9.3E-05 5.3E-02 123-91-1 Dioxane, 1,4-0.117 0.117 0.117 1.5E-07 5.1E-10 1.0E-07 2.5E-07 1.9E-04 6.1E-07 1.9E-03 2.1E-03 7439-96-5 Manganese (Non-diet)24.8 24.8 24.8 5.2E-02 5.7E-03 5.7E-02 7440-62-2 Vanadium and Compounds 1.37 1.37 1.37 1.4E-02 2.3E-03 1.6E-02 Cumulative:2.5E-07 1.5E-01 Output Form 2B ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Non-Residential Worker Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-03 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 94.8 94.8 94.8 3.4E-03 7.6E-04 4.1E-03 7440-48-4 Cobalt 0.316 0.316 0.316 7.5E-03 4.7E-05 7.5E-03 123-91-1 Dioxane, 1,4-0.117 0.117 0.117 3.0E-08 3.0E-10 2.4E-08 5.4E-08 2.8E-05 2.8E-07 4.5E-04 4.7E-04 7439-96-5 Manganese (Non-diet)24.8 24.8 24.8 7.3E-03 2.9E-03 1.0E-02 7440-62-2 Vanadium and Compounds 1.37 1.37 1.37 1.9E-03 1.2E-03 3.1E-03 Cumulative:5.4E-08 2.6E-02 Output Form 2D ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-03 CAS #Chemical Name: Groundwater Concentration (ug/L) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 94.8 -1.0E-01 7440-48-4 Cobalt 0.316 3.1E-04 1.3E-03 123-91-1 Dioxane, 1,4-0.117 5.6E-01 6.3E+00 4.1E-11 7.3E-07 7439-96-5 Manganese (Non-diet)24.8 -1.0E-02 7440-62-2 Vanadium and Compounds 1.37 -2.1E-02 Cumulative:4.1E-11 7.3E-07 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3A Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-03 CAS #Chemical Name: Groundwater Concentration (ug/L) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 94.8 -4.4E-01 7440-48-4 Cobalt 0.316 1.4E-03 5.3E-03 123-91-1 Dioxane, 1,4-0.117 2.29599E-05 2.5E+00 2.6E+01 9.4E-12 1.7E-07 7439-96-5 Manganese (Non-diet)24.8 -4.4E-02 7440-62-2 Vanadium and Compounds 1.37 -8.8E-02 Cumulative:9.4E-12 1.7E-07 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3D Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-04 Description of Exposure Point Concentration Selection: NOTE: If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations Exposure Point Concentration (ug/L) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 15.3 7440-39-3 Barium ug/L 0.342 7440-48-4 Cobalt ug/L 0.0536 123-91-1 Dioxane, 1,4-ug/L 19.3 7439-96-5 Manganese (Non-diet)ug/L 1.15 7440-02-0 Nickel Soluble Salts ug/L Input Form 2B Groundwater Exposure Point Concentration Table Concentrations from sample MW-04. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Resident Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-04 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk* Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient* Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 15.3 15.3 15.3 3.8E-03 2.4E-04 4.1E-03 7440-48-4 Cobalt 0.342 0.342 0.342 5.7E-02 1.0E-04 5.7E-02 123-91-1 Dioxane, 1,4-0.0536 0.0536 0.0536 6.9E-08 2.4E-10 4.8E-08 1.2E-07 8.9E-05 2.8E-07 8.6E-04 9.5E-04 7439-96-5 Manganese (Non-diet)19.3 19.3 19.3 4.0E-02 4.4E-03 4.5E-02 7440-02-0 Nickel Soluble Salts 1.15 1.15 1.15 2.9E-03 6.3E-05 2.9E-03 Cumulative:1.2E-07 1.1E-01 Output Form 2B ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Non-Residential Worker Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-04 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 15.3 15.3 15.3 5.4E-04 1.2E-04 6.7E-04 7440-48-4 Cobalt 0.342 0.342 0.342 8.1E-03 5.1E-05 8.2E-03 123-91-1 Dioxane, 1,4-0.0536 0.0536 0.0536 1.4E-08 1.4E-10 1.1E-08 2.5E-08 1.3E-05 1.3E-07 2.0E-04 2.2E-04 7439-96-5 Manganese (Non-diet)19.3 19.3 19.3 5.7E-03 2.3E-03 8.0E-03 7440-02-0 Nickel Soluble Salts 1.15 1.15 1.15 4.1E-04 3.2E-05 4.4E-04 Cumulative:2.5E-08 1.7E-02 Output Form 2D ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-04 CAS #Chemical Name: Groundwater Concentration (ug/L) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 15.3 -1.0E-01 7440-48-4 Cobalt 0.342 3.1E-04 1.3E-03 123-91-1 Dioxane, 1,4-0.0536 5.6E-01 6.3E+00 1.9E-11 3.4E-07 7439-96-5 Manganese (Non-diet)19.3 -1.0E-02 7440-02-0 Nickel Soluble Salts 1.15 1.1E-02 2.9E-03 Cumulative:1.9E-11 3.4E-07 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3A Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-04 CAS #Chemical Name: Groundwater Concentration (ug/L) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 15.3 -4.4E-01 7440-48-4 Cobalt 0.342 1.4E-03 5.3E-03 123-91-1 Dioxane, 1,4-0.0536 1.05184E-05 2.5E+00 2.6E+01 4.3E-12 8.0E-08 7439-96-5 Manganese (Non-diet)19.3 -4.4E-02 7440-02-0 Nickel Soluble Salts 1.15 4.7E-02 1.2E-02 Cumulative:4.3E-12 8.0E-08 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3D Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-05 Description of Exposure Point Concentration Selection: NOTE: If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations Exposure Point Concentration (ug/L) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 14.3 7440-39-3 Barium ug/L 0.34 67-66-3 Chloroform ug/L 0.0782 7440-48-4 Cobalt ug/L 0.0574 123-91-1 Dioxane, 1,4-ug/L 6.39 7439-96-5 Manganese (Non-diet)ug/L 0.826 7440-02-0 Nickel Soluble Salts ug/L 1.57 7440-62-2 Vanadium and Compounds ug/L Input Form 2B Groundwater Exposure Point Concentration Table Concentrations from sample MW-05. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Resident Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-05 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk* Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient* Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 14.3 14.3 14.3 3.6E-03 2.2E-04 3.8E-03 67-66-3 Chloroform 0.34 0.34 0.34 1.4E-07 1.2E-08 1.4E-06 1.5E-06 1.7E-03 1.3E-04 1.7E-03 3.5E-03 7440-48-4 Cobalt 0.0782 0.0782 0.0782 1.3E-02 2.3E-05 1.3E-02 123-91-1 Dioxane, 1,4-0.0574 0.0574 0.0574 7.4E-08 2.5E-10 5.1E-08 1.3E-07 9.5E-05 3.0E-07 9.2E-04 1.0E-03 7439-96-5 Manganese (Non-diet)6.39 6.39 6.39 1.3E-02 1.5E-03 1.5E-02 7440-02-0 Nickel Soluble Salts 0.826 0.826 0.826 2.1E-03 4.5E-05 2.1E-03 7440-62-2 Vanadium and Compounds 1.57 1.57 1.57 1.6E-02 2.7E-03 1.8E-02 Cumulative:1.7E-06 5.6E-02 Output Form 2B ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Non-Residential Worker Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-05 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 14.3 14.3 14.3 5.1E-04 1.2E-04 6.2E-04 67-66-3 Chloroform 0.34 0.34 0.34 2.7E-08 6.9E-09 3.2E-07 3.5E-07 2.4E-04 6.2E-05 4.0E-04 7.0E-04 7440-48-4 Cobalt 0.0782 0.0782 0.0782 1.9E-03 1.2E-05 1.9E-03 123-91-1 Dioxane, 1,4-0.0574 0.0574 0.0574 1.5E-08 1.5E-10 1.2E-08 2.6E-08 1.4E-05 1.4E-07 2.2E-04 2.3E-04 7439-96-5 Manganese (Non-diet)6.39 6.39 6.39 1.9E-03 7.5E-04 2.6E-03 7440-02-0 Nickel Soluble Salts 0.826 0.826 0.826 2.9E-04 2.3E-05 3.2E-04 7440-62-2 Vanadium and Compounds 1.57 1.57 1.57 2.2E-03 1.4E-03 3.6E-03 Cumulative:3.8E-07 1.0E-02 Output Form 2D ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-05 CAS #Chemical Name: Groundwater Concentration (ug/L) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 14.3 -1.0E-01 67-66-3 Chloroform 0.34 1.2E-01 2.0E+01 4.2E-07 5.0E-04 7440-48-4 Cobalt 0.0782 3.1E-04 1.3E-03 123-91-1 Dioxane, 1,4-0.0574 5.6E-01 6.3E+00 2.0E-11 3.6E-07 7439-96-5 Manganese (Non-diet)6.39 -1.0E-02 7440-02-0 Nickel Soluble Salts 0.826 1.1E-02 2.9E-03 7440-62-2 Vanadium and Compounds 1.57 -2.1E-02 Cumulative:4.2E-07 5.0E-04 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3A Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-05 CAS #Chemical Name: Groundwater Concentration (ug/L) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 14.3 -4.4E-01 67-66-3 Chloroform 0.34 0.0510139 5.3E-01 8.6E+01 9.6E-08 1.2E-04 7440-48-4 Cobalt 0.0782 1.4E-03 5.3E-03 123-91-1 Dioxane, 1,4-0.0574 1.12641E-05 2.5E+00 2.6E+01 4.6E-12 8.6E-08 7439-96-5 Manganese (Non-diet)6.39 -4.4E-02 7440-02-0 Nickel Soluble Salts 0.826 4.7E-02 1.2E-02 7440-62-2 Vanadium and Compounds 1.57 -8.8E-02 Cumulative:9.6E-08 1.2E-04 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3D Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-06 Description of Exposure Point Concentration Selection: NOTE: If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations Exposure Point Concentration (ug/L) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 23.2 7440-39-3 Barium ug/L 1.99 18540-29-9 Chromium(VI)ug/L 0.112 7440-48-4 Cobalt ug/L 0.0731 123-91-1 Dioxane, 1,4-ug/L 10.6 7439-96-5 Manganese (Non-diet)ug/L 3.89 7440-02-0 Nickel Soluble Salts ug/L 0.152 206-44-0 ~Fluoranthene ug/L 3.45 7440-62-2 Vanadium and Compounds ug/L Input Form 2B Groundwater Exposure Point Concentration Table Concentrations from sample MW-06. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Resident Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-06 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk* Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient* Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 23.2 23.2 23.2 5.8E-03 3.6E-04 6.1E-03 18540-29-9 Chromium(VI)1.99 1.99 1.99 4.0E-05 1.7E-05 5.7E-05 3.3E-02 1.2E-02 4.5E-02 7440-48-4 Cobalt 0.112 0.112 0.112 1.9E-02 3.3E-05 1.9E-02 123-91-1 Dioxane, 1,4-0.0731 0.0731 0.0731 9.4E-08 3.2E-10 6.5E-08 1.6E-07 1.2E-04 3.8E-07 1.2E-03 1.3E-03 7439-96-5 Manganese (Non-diet)10.6 10.6 10.6 2.2E-02 2.4E-03 2.4E-02 7440-02-0 Nickel Soluble Salts 3.89 3.89 3.89 9.7E-03 2.1E-04 9.9E-03 206-44-0 ~Fluoranthene 0.152 0.152 0.152 1.9E-04 1.9E-04 7440-62-2 Vanadium and Compounds 3.45 3.45 3.45 3.4E-02 5.8E-03 4.0E-02 Cumulative:5.7E-05 1.5E-01 Output Form 2B ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Non-Residential Worker Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-06 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 23.2 23.2 23.2 8.2E-04 1.9E-04 1.0E-03 18540-29-9 Chromium(VI)1.99 1.99 1.99 2.5E-06 3.2E-06 5.7E-06 4.7E-03 6.0E-03 1.1E-02 7440-48-4 Cobalt 0.112 0.112 0.112 2.7E-03 1.7E-05 2.7E-03 123-91-1 Dioxane, 1,4-0.0731 0.0731 0.0731 1.9E-08 1.9E-10 1.5E-08 3.4E-08 1.7E-05 1.8E-07 2.8E-04 3.0E-04 7439-96-5 Manganese (Non-diet)10.6 10.6 10.6 3.1E-03 1.2E-03 4.4E-03 7440-02-0 Nickel Soluble Salts 3.89 3.89 3.89 1.4E-03 1.1E-04 1.5E-03 206-44-0 ~Fluoranthene 0.152 0.152 0.152 2.7E-05 2.7E-05 7440-62-2 Vanadium and Compounds 3.45 3.45 3.45 4.9E-03 3.0E-03 7.9E-03 Cumulative:5.8E-06 2.8E-02 Output Form 2D ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-06 CAS #Chemical Name: Groundwater Concentration (ug/L) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 23.2 -1.0E-01 18540-29-9 Chromium(VI)1.99 1.2E-05 2.1E-02 7440-48-4 Cobalt 0.112 3.1E-04 1.3E-03 123-91-1 Dioxane, 1,4-0.0731 5.6E-01 6.3E+00 2.6E-11 4.6E-07 7439-96-5 Manganese (Non-diet)10.6 -1.0E-02 7440-02-0 Nickel Soluble Salts 3.89 1.1E-02 2.9E-03 206-44-0 ~Fluoranthene 0.152 -- 7440-62-2 Vanadium and Compounds 3.45 -2.1E-02 Cumulative:2.6E-11 4.6E-07 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3A Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-06 CAS #Chemical Name: Groundwater Concentration (ug/L) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 23.2 -4.4E-01 18540-29-9 Chromium(VI)1.99 1.5E-04 8.8E-02 7440-48-4 Cobalt 0.112 1.4E-03 5.3E-03 123-91-1 Dioxane, 1,4-0.0731 1.43451E-05 2.5E+00 2.6E+01 5.8E-12 1.1E-07 7439-96-5 Manganese (Non-diet)10.6 -4.4E-02 7440-02-0 Nickel Soluble Salts 3.89 4.7E-02 1.2E-02 206-44-0 ~Fluoranthene 0.152 5.50581E-05 -- 7440-62-2 Vanadium and Compounds 3.45 -8.8E-02 Cumulative:5.8E-12 1.1E-07 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3D Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-07 Description of Exposure Point Concentration Selection: NOTE: If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations Exposure Point Concentration (ug/L) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 35.7 7440-39-3 Barium ug/L 0.169 7440-48-4 Cobalt ug/L 0.0958 123-91-1 Dioxane, 1,4-ug/L 11.7 7439-96-5 Manganese (Non-diet)ug/L 1.88 7440-02-0 Nickel Soluble Salts ug/L 2.92 7440-62-2 Vanadium and Compounds ug/L Input Form 2B Groundwater Exposure Point Concentration Table Concentrations from sample MW-07. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Resident Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-07 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk* Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient* Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 35.7 35.7 35.7 8.9E-03 5.6E-04 9.5E-03 7440-48-4 Cobalt 0.169 0.169 0.169 2.8E-02 5.0E-05 2.8E-02 123-91-1 Dioxane, 1,4-0.0958 0.0958 0.0958 1.2E-07 4.2E-10 8.5E-08 2.1E-07 1.6E-04 5.0E-07 1.5E-03 1.7E-03 7439-96-5 Manganese (Non-diet)11.7 11.7 11.7 2.4E-02 2.7E-03 2.7E-02 7440-02-0 Nickel Soluble Salts 1.88 1.88 1.88 4.7E-03 1.0E-04 4.8E-03 7440-62-2 Vanadium and Compounds 2.92 2.92 2.92 2.9E-02 4.9E-03 3.4E-02 Cumulative:2.1E-07 1.1E-01 Output Form 2B ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Direct Contact - Non-Residential Worker Groundwater Use Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-07 * - Note that inhalation on this calculator refers to inhalation associated with tapwater use, not inhalation associated with vapor intrusion from subsurface groundwater sources. CAS #Chemical Name: Ingestion Concentration (ug/L) Dermal Concentration (ug/L) Inhalation Concentration (ug/L)* Ingestion Carcinogenic Risk Dermal Carcinogenic Risk Inhalation Carcinogenic Risk Calculated Carcinogenic Risk Ingestion Hazard Quotient Dermal Hazard Quotient Inhalation Hazard Quotient Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 35.7 35.7 35.7 1.3E-03 2.9E-04 1.6E-03 7440-48-4 Cobalt 0.169 0.169 0.169 4.0E-03 2.5E-05 4.0E-03 123-91-1 Dioxane, 1,4-0.0958 0.0958 0.0958 2.4E-08 2.5E-10 2.0E-08 4.4E-08 2.3E-05 2.3E-07 3.6E-04 3.9E-04 7439-96-5 Manganese (Non-diet)11.7 11.7 11.7 3.5E-03 1.4E-03 4.8E-03 7440-02-0 Nickel Soluble Salts 1.88 1.88 1.88 6.7E-04 5.3E-05 7.2E-04 7440-62-2 Vanadium and Compounds 2.92 2.92 2.92 4.2E-03 2.5E-03 6.7E-03 Cumulative:4.4E-08 1.8E-02 Output Form 2D ** - Note that the EPA has no consensus on reference dose or cancer slope factor values for lead, therefore it is not possible to calculate cancer risk or hazard quotient. Lead concentrations are compared to the EPA Action Level of 15 μg/L. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-07 CAS #Chemical Name: Groundwater Concentration (ug/L) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 35.7 -1.0E-01 7440-48-4 Cobalt 0.169 3.1E-04 1.3E-03 123-91-1 Dioxane, 1,4-0.0958 5.6E-01 6.3E+00 3.3E-11 6.0E-07 7439-96-5 Manganese (Non-diet)11.7 -1.0E-02 7440-02-0 Nickel Soluble Salts 1.88 1.1E-02 2.9E-03 7440-62-2 Vanadium and Compounds 2.92 -2.1E-02 Cumulative:3.3E-11 6.0E-07 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3A Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Groundwater to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: MW-07 CAS #Chemical Name: Groundwater Concentration (ug/L) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 7440-39-3 Barium 35.7 -4.4E-01 7440-48-4 Cobalt 0.169 1.4E-03 5.3E-03 123-91-1 Dioxane, 1,4-0.0958 1.87997E-05 2.5E+00 2.6E+01 7.7E-12 1.4E-07 7439-96-5 Manganese (Non-diet)11.7 -4.4E-02 7440-02-0 Nickel Soluble Salts 1.88 4.7E-02 1.2E-02 7440-62-2 Vanadium and Compounds 2.92 -8.8E-02 Cumulative:7.7E-12 1.4E-07 Groundwater concentrations are in ug/L. Air concentrations are in ug/m3. Output Form 3D Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W Pre-Regulatory Landfill Unit APPENDIX E LABORATORY ANALYTICAL REPORT – LANDFILL GAS 3/7/2024 Ms. Laura de Sousa ATLAS (Formerly ATC Associates) 2725 East Millbrook Road Suite 121 Raleigh NC 27604 Project Name: Elon College LE Project #: Dear Ms. Laura de Sousa The following report includes the data for the above referenced project for sample(s) received on 2/23/2024 at Eurofins Air Toxics LLC. The data and associated QC analyzed by TO-15 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics LLC. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Brian Whittaker at 916-985-1000 if you have any questions regarding the data in this report. Regards, Brian Whittaker Project Manager Workorder #: 2402559A Page 1 of 28 Ms. Laura de Sousa ATLAS (Formerly ATC Associates) 2725 East Millbrook Road Suite 121 Raleigh, NC 27604 WORK ORDER #: 2402559A CLIENT:BILL TO: PHONE: Ms. Laura de Sousa ATLAS (Formerly ATC Associates) 2725 East Millbrook Road Suite 121 Raleigh, NC 27604 (919) 871-0999 (919) 871-0335 02/23/2024 DATE COMPLETED:03/07/2024 P.O. #PRLU0730W PROJECT #Elon College LE Work Order Summary FAX: DATE RECEIVED:CONTACT:Brian Whittaker NAMEFRACTION #TEST VAC./PRES. RECEIPT PRESSURE FINAL 01A LFGP-1 TO-15 2.4 "Hg 9.9 psi 02A LFGP-2 TO-15 4.9 "Hg 9.8 psi 03A SGP-6 TO-15 14.3 "Hg 9.9 psi 04A SGP-8 TO-15 3.3 "Hg 9.8 psi 05A SGP-10 TO-15 2.8 "Hg 10 psi 06A SGP-11 TO-15 3.5 "Hg 9.8 psi 07A DUP-B TO-15 4.9 "Hg 10.1 psi 08A Lab Blank TO-15 NA NA 09A CCV TO-15 NA NA 10A LCS TO-15 NA NA 10AA LCSD TO-15 NA NA CERTIFIED BY: Technical Director DATE: 03/07/24 Page 2 of 28 Certification numbers: AZ Licensure AZ0775, FL NELAP – E87680, LA NELAP – 02089, NH NELAP – 209222, NJ NELAP - CA016, NY NELAP - 11291, TX NELAP – T104704434-22-18, UT NELAP – CA009332022-14, VA NELAP - 12240, WA ELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) CA300005-017 Eurofins Environment Testing Northern California, LLC certifies that the test results contained in this report meet all requirements of the 2016 TNI Standard. This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, LLC. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA - 95630 (916) 985-1000 LABORATORY NARRATIVE EPA Method TO-15 ATLAS (Formerly ATC Associates) Workorder# 2402559A Seven 1 Liter Summa Canister samples were received on February 23, 2024. The laboratory performed analysis via EPA Method TO-15 using GC/MS in the full scan mode. There were no receiving discrepancies. Receiving Notes All Quality Control Limit exceedances and affected sample results are noted by flags. Each flag is defined at the bottom of this Case Narrative and on each Sample Result Summary page. Analytical Notes Ten qualifiers may have been used on the data analysis sheets and indicates as follows: B - Compound present in laboratory blank greater than reporting limit (background subtraction not performed). J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - Compound analyzed for but not detected above the reporting limit, LOD, or MDL value. See data page for project specific U-flag definition. UJ- Non-detected compound associated with low bias in the CCV N - The identification is based on presumptive evidence. M - Reported value may be biased due to apparent matrix interferences. CN - See Case Narrative. File extensions may have been used on the data analysis sheets and indicates as follows: a-File was requantified b-File was quantified by a second column and detector r1-File was requantified for the purpose of reissue Definition of Data Qualifying Flags Page 3 of 28 EPA METHOD TO-15 GC/MS FULL SCAN Summary of Detected Compounds Client Sample ID: LFGP-1 Lab ID#: 2402559A-01A (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 0.91 4.5 4.5 22Freon 12 0.91 7.3 6.4 51Freon 114 0.91 2.5 3.1 8.5Cyclohexane 0.91 2.4 6.2 16Tetrachloroethene Client Sample ID: LFGP-2 Lab ID#: 2402559A-02A (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 1.0 24 4.9 120Freon 12 1.0 45 7.0 320Freon 114 1.0 3.7 3.5 13Hexane 1.0 12 3.4 40Cyclohexane 1.0 1.1 4.6 5.02,2,4-Trimethylpentane 1.0 1.8 3.2 5.7Benzene 2.0 2.4 8.6 10m,p-Xylene 1.0 4.3 4.9 21Cumene 1.0 1.8 4.9 9.14-Ethyltoluene 1.0 1.3 4.9 6.51,3,5-Trimethylbenzene Client Sample ID: SGP-6 Lab ID#: 2402559A-03A (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 1.6 2.5 11 17Tetrachloroethene Client Sample ID: SGP-8 Lab ID#: 2402559A-04A (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 9.4 17 22 41Acetone 3.7 5.6 12 18Carbon Disulfide Page 4 of 28 EPA METHOD TO-15 GC/MS FULL SCAN Summary of Detected Compounds Client Sample ID: SGP-8 Lab ID#: 2402559A-04A 0.94 1.6 4.6 8.0Chloroform Client Sample ID: SGP-10 Lab ID#: 2402559A-05A (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 3.7 9.5 12 30Carbon Disulfide 0.92 2.5 3.2 8.6Cyclohexane 0.92 2.7 6.3 18Tetrachloroethene Client Sample ID: SGP-11 Lab ID#: 2402559A-06A (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 3.8 8.7 12 27Carbon Disulfide 0.94 1.4 3.2 5.0Cyclohexane 0.94 1.7 6.4 12Tetrachloroethene Client Sample ID: DUP-B Lab ID#: 2402559A-07A (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 1.0 35 5.0 170Freon 12 1.0 68 7.1 470Freon 114 10 12 24 28Acetone 1.0 5.8 3.6 20Hexane 1.0 18 3.5 62Cyclohexane 1.0 1.5 4.7 7.12,2,4-Trimethylpentane 1.0 2.9 3.2 9.2Benzene 1.0 1.3 4.1 5.3Heptane 2.0 2.7 8.8 12m,p-Xylene 1.0 1.1 4.4 4.7o-Xylene 1.0 4.8 5.0 23Cumene 1.0 2.0 5.0 104-Ethyltoluene Page 5 of 28 EPA METHOD TO-15 GC/MS FULL SCAN Summary of Detected Compounds Client Sample ID: DUP-B Lab ID#: 2402559A-07A 1.0 1.4 5.0 6.91,3,5-Trimethylbenzene Page 6 of 28 Client Sample ID: LFGP-1 Lab ID#: 2402559A-01A EPA METHOD TO-15 GC/MS FULL SCAN a030512File Name: Dil. Factor:1.82 Date of Collection: 2/20/24 4:19:00 PM Date of Analysis: 3/5/24 06:30 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 0.91 4.5 4.5 22Freon 12 0.91 7.3 6.4 51Freon 114 9.1 Not Detected 19 Not DetectedChloromethane 0.91 Not Detected 2.3 Not DetectedVinyl Chloride 0.91 Not Detected 2.0 Not Detected1,3-Butadiene 9.1 Not Detected 35 Not DetectedBromomethane 3.6 Not Detected 9.6 Not DetectedChloroethane 0.91 Not Detected 5.1 Not DetectedFreon 11 9.1 Not Detected 17 Not DetectedEthanol 0.91 Not Detected 7.0 Not DetectedFreon 113 0.91 Not Detected 3.6 Not Detected1,1-Dichloroethene 9.1 Not Detected 22 Not DetectedAcetone 3.6 Not Detected 8.9 Not Detected2-Propanol 3.6 Not Detected 11 Not DetectedCarbon Disulfide 3.6 Not Detected 11 Not Detected3-Chloropropene 9.1 Not Detected 32 Not DetectedMethylene Chloride 3.6 Not Detected 13 Not DetectedMethyl tert-butyl ether 0.91 Not Detected 3.6 Not Detectedtrans-1,2-Dichloroethene 0.91 Not Detected 3.2 Not DetectedHexane 0.91 Not Detected 3.7 Not Detected1,1-Dichloroethane 3.6 Not Detected 11 Not Detected2-Butanone (Methyl Ethyl Ketone) 0.91 Not Detected 3.6 Not Detectedcis-1,2-Dichloroethene 0.91 Not Detected 2.7 Not DetectedTetrahydrofuran 0.91 Not Detected 4.4 Not DetectedChloroform 0.91 Not Detected 5.0 Not Detected1,1,1-Trichloroethane 0.91 2.5 3.1 8.5Cyclohexane 0.91 Not Detected 5.7 Not DetectedCarbon Tetrachloride 0.91 Not Detected 4.2 Not Detected2,2,4-Trimethylpentane 0.91 Not Detected 2.9 Not DetectedBenzene 0.91 Not Detected 3.7 Not Detected1,2-Dichloroethane 0.91 Not Detected 3.7 Not DetectedHeptane 0.91 Not Detected 4.9 Not DetectedTrichloroethene 0.91 Not Detected 4.2 Not Detected1,2-Dichloropropane 3.6 Not Detected 13 Not Detected1,4-Dioxane 0.91 Not Detected 6.1 Not DetectedBromodichloromethane 0.91 Not Detected 4.1 Not Detectedcis-1,3-Dichloropropene 0.91 Not Detected 3.7 Not Detected4-Methyl-2-pentanone 1.8 Not Detected 6.8 Not DetectedToluene 0.91 Not Detected 4.1 Not Detectedtrans-1,3-Dichloropropene 0.91 Not Detected 5.0 Not Detected1,1,2-Trichloroethane 0.91 2.4 6.2 16Tetrachloroethene 3.6 Not Detected 15 Not Detected2-Hexanone Page 7 of 28 Client Sample ID: LFGP-1 Lab ID#: 2402559A-01A EPA METHOD TO-15 GC/MS FULL SCAN a030512File Name: Dil. Factor:1.82 Date of Collection: 2/20/24 4:19:00 PM Date of Analysis: 3/5/24 06:30 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 0.91 Not Detected 7.8 Not DetectedDibromochloromethane 0.91 Not Detected 7.0 Not Detected1,2-Dibromoethane (EDB) 0.91 Not Detected 4.2 Not DetectedChlorobenzene 0.91 Not Detected 4.0 Not DetectedEthyl Benzene 1.8 Not Detected 7.9 Not Detectedm,p-Xylene 0.91 Not Detected 4.0 Not Detectedo-Xylene 0.91 Not Detected 3.9 Not DetectedStyrene 0.91 Not Detected 9.4 Not DetectedBromoform 0.91 Not Detected 4.5 Not DetectedCumene 0.91 Not Detected 6.2 Not Detected1,1,2,2-Tetrachloroethane 0.91 Not Detected 4.5 Not DetectedPropylbenzene 0.91 Not Detected 4.5 Not Detected4-Ethyltoluene 0.91 Not Detected 4.5 Not Detected1,3,5-Trimethylbenzene 0.91 Not Detected 4.5 Not Detected1,2,4-Trimethylbenzene 0.91 Not Detected 5.5 Not Detected1,3-Dichlorobenzene 0.91 Not Detected 5.5 Not Detected1,4-Dichlorobenzene 0.91 Not Detected 4.7 Not Detectedalpha-Chlorotoluene 0.91 Not Detected 5.5 Not Detected1,2-Dichlorobenzene 3.6 Not Detected 27 Not Detected1,2,4-Trichlorobenzene 3.6 Not Detected 39 Not DetectedHexachlorobutadiene Container Type: 1 Liter Summa Canister Limits%RecoverySurrogates Method 103 70-130Toluene-d8 79 70-1301,2-Dichloroethane-d4 91 70-1304-Bromofluorobenzene Page 8 of 28 Client Sample ID: LFGP-2 Lab ID#: 2402559A-02A EPA METHOD TO-15 GC/MS FULL SCAN a030513File Name: Dil. Factor:1.99 Date of Collection: 2/20/24 11:52:00 AM Date of Analysis: 3/5/24 07:07 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 1.0 24 4.9 120Freon 12 1.0 45 7.0 320Freon 114 10 Not Detected 20 Not DetectedChloromethane 1.0 Not Detected 2.5 Not DetectedVinyl Chloride 1.0 Not Detected 2.2 Not Detected1,3-Butadiene 10 Not Detected 39 Not DetectedBromomethane 4.0 Not Detected 10 Not DetectedChloroethane 1.0 Not Detected 5.6 Not DetectedFreon 11 10 Not Detected 19 Not DetectedEthanol 1.0 Not Detected 7.6 Not DetectedFreon 113 1.0 Not Detected 3.9 Not Detected1,1-Dichloroethene 10 Not Detected 24 Not DetectedAcetone 4.0 Not Detected 9.8 Not Detected2-Propanol 4.0 Not Detected 12 Not DetectedCarbon Disulfide 4.0 Not Detected 12 Not Detected3-Chloropropene 10 Not Detected 34 Not DetectedMethylene Chloride 4.0 Not Detected 14 Not DetectedMethyl tert-butyl ether 1.0 Not Detected 3.9 Not Detectedtrans-1,2-Dichloroethene 1.0 3.7 3.5 13Hexane 1.0 Not Detected 4.0 Not Detected1,1-Dichloroethane 4.0 Not Detected 12 Not Detected2-Butanone (Methyl Ethyl Ketone) 1.0 Not Detected 3.9 Not Detectedcis-1,2-Dichloroethene 1.0 Not Detected 2.9 Not DetectedTetrahydrofuran 1.0 Not Detected 4.8 Not DetectedChloroform 1.0 Not Detected 5.4 Not Detected1,1,1-Trichloroethane 1.0 12 3.4 40Cyclohexane 1.0 Not Detected 6.3 Not DetectedCarbon Tetrachloride 1.0 1.1 4.6 5.02,2,4-Trimethylpentane 1.0 1.8 3.2 5.7Benzene 1.0 Not Detected 4.0 Not Detected1,2-Dichloroethane 1.0 Not Detected 4.1 Not DetectedHeptane 1.0 Not Detected 5.3 Not DetectedTrichloroethene 1.0 Not Detected 4.6 Not Detected1,2-Dichloropropane 4.0 Not Detected 14 Not Detected1,4-Dioxane 1.0 Not Detected 6.7 Not DetectedBromodichloromethane 1.0 Not Detected 4.5 Not Detectedcis-1,3-Dichloropropene 1.0 Not Detected 4.1 Not Detected4-Methyl-2-pentanone 2.0 Not Detected 7.5 Not DetectedToluene 1.0 Not Detected 4.5 Not Detectedtrans-1,3-Dichloropropene 1.0 Not Detected 5.4 Not Detected1,1,2-Trichloroethane 1.0 Not Detected 6.7 Not DetectedTetrachloroethene 4.0 Not Detected 16 Not Detected2-Hexanone Page 9 of 28 Client Sample ID: LFGP-2 Lab ID#: 2402559A-02A EPA METHOD TO-15 GC/MS FULL SCAN a030513File Name: Dil. Factor:1.99 Date of Collection: 2/20/24 11:52:00 AM Date of Analysis: 3/5/24 07:07 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 1.0 Not Detected 8.5 Not DetectedDibromochloromethane 1.0 Not Detected 7.6 Not Detected1,2-Dibromoethane (EDB) 1.0 Not Detected 4.6 Not DetectedChlorobenzene 1.0 Not Detected 4.3 Not DetectedEthyl Benzene 2.0 2.4 8.6 10m,p-Xylene 1.0 Not Detected 4.3 Not Detectedo-Xylene 1.0 Not Detected 4.2 Not DetectedStyrene 1.0 Not Detected 10 Not DetectedBromoform 1.0 4.3 4.9 21Cumene 1.0 Not Detected 6.8 Not Detected1,1,2,2-Tetrachloroethane 1.0 Not Detected 4.9 Not DetectedPropylbenzene 1.0 1.8 4.9 9.14-Ethyltoluene 1.0 1.3 4.9 6.51,3,5-Trimethylbenzene 1.0 Not Detected 4.9 Not Detected1,2,4-Trimethylbenzene 1.0 Not Detected 6.0 Not Detected1,3-Dichlorobenzene 1.0 Not Detected 6.0 Not Detected1,4-Dichlorobenzene 1.0 Not Detected 5.2 Not Detectedalpha-Chlorotoluene 1.0 Not Detected 6.0 Not Detected1,2-Dichlorobenzene 4.0 Not Detected 30 Not Detected1,2,4-Trichlorobenzene 4.0 Not Detected 42 Not DetectedHexachlorobutadiene Container Type: 1 Liter Summa Canister Limits%RecoverySurrogates Method 107 70-130Toluene-d8 80 70-1301,2-Dichloroethane-d4 95 70-1304-Bromofluorobenzene Page 10 of 28 Client Sample ID: SGP-6 Lab ID#: 2402559A-03A EPA METHOD TO-15 GC/MS FULL SCAN a030514File Name: Dil. Factor:3.20 Date of Collection: 2/20/24 1:14:00 PM Date of Analysis: 3/5/24 07:44 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 1.6 Not Detected 7.9 Not DetectedFreon 12 1.6 Not Detected 11 Not DetectedFreon 114 16 Not Detected 33 Not DetectedChloromethane 1.6 Not Detected 4.1 Not DetectedVinyl Chloride 1.6 Not Detected 3.5 Not Detected1,3-Butadiene 16 Not Detected 62 Not DetectedBromomethane 6.4 Not Detected 17 Not DetectedChloroethane 1.6 Not Detected 9.0 Not DetectedFreon 11 16 Not Detected 30 Not DetectedEthanol 1.6 Not Detected 12 Not DetectedFreon 113 1.6 Not Detected 6.3 Not Detected1,1-Dichloroethene 16 Not Detected 38 Not DetectedAcetone 6.4 Not Detected 16 Not Detected2-Propanol 6.4 Not Detected 20 Not DetectedCarbon Disulfide 6.4 Not Detected 20 Not Detected3-Chloropropene 16 Not Detected 56 Not DetectedMethylene Chloride 6.4 Not Detected 23 Not DetectedMethyl tert-butyl ether 1.6 Not Detected 6.3 Not Detectedtrans-1,2-Dichloroethene 1.6 Not Detected 5.6 Not DetectedHexane 1.6 Not Detected 6.5 Not Detected1,1-Dichloroethane 6.4 Not Detected 19 Not Detected2-Butanone (Methyl Ethyl Ketone) 1.6 Not Detected 6.3 Not Detectedcis-1,2-Dichloroethene 1.6 Not Detected 4.7 Not DetectedTetrahydrofuran 1.6 Not Detected 7.8 Not DetectedChloroform 1.6 Not Detected 8.7 Not Detected1,1,1-Trichloroethane 1.6 Not Detected 5.5 Not DetectedCyclohexane 1.6 Not Detected 10 Not DetectedCarbon Tetrachloride 1.6 Not Detected 7.5 Not Detected2,2,4-Trimethylpentane 1.6 Not Detected 5.1 Not DetectedBenzene 1.6 Not Detected 6.5 Not Detected1,2-Dichloroethane 1.6 Not Detected 6.6 Not DetectedHeptane 1.6 Not Detected 8.6 Not DetectedTrichloroethene 1.6 Not Detected 7.4 Not Detected1,2-Dichloropropane 6.4 Not Detected 23 Not Detected1,4-Dioxane 1.6 Not Detected 11 Not DetectedBromodichloromethane 1.6 Not Detected 7.3 Not Detectedcis-1,3-Dichloropropene 1.6 Not Detected 6.6 Not Detected4-Methyl-2-pentanone 3.2 Not Detected 12 Not DetectedToluene 1.6 Not Detected 7.3 Not Detectedtrans-1,3-Dichloropropene 1.6 Not Detected 8.7 Not Detected1,1,2-Trichloroethane 1.6 2.5 11 17Tetrachloroethene 6.4 Not Detected 26 Not Detected2-Hexanone Page 11 of 28 Client Sample ID: SGP-6 Lab ID#: 2402559A-03A EPA METHOD TO-15 GC/MS FULL SCAN a030514File Name: Dil. Factor:3.20 Date of Collection: 2/20/24 1:14:00 PM Date of Analysis: 3/5/24 07:44 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 1.6 Not Detected 14 Not DetectedDibromochloromethane 1.6 Not Detected 12 Not Detected1,2-Dibromoethane (EDB) 1.6 Not Detected 7.4 Not DetectedChlorobenzene 1.6 Not Detected 6.9 Not DetectedEthyl Benzene 3.2 Not Detected 14 Not Detectedm,p-Xylene 1.6 Not Detected 6.9 Not Detectedo-Xylene 1.6 Not Detected 6.8 Not DetectedStyrene 1.6 Not Detected 16 Not DetectedBromoform 1.6 Not Detected 7.9 Not DetectedCumene 1.6 Not Detected 11 Not Detected1,1,2,2-Tetrachloroethane 1.6 Not Detected 7.9 Not DetectedPropylbenzene 1.6 Not Detected 7.9 Not Detected4-Ethyltoluene 1.6 Not Detected 7.9 Not Detected1,3,5-Trimethylbenzene 1.6 Not Detected 7.9 Not Detected1,2,4-Trimethylbenzene 1.6 Not Detected 9.6 Not Detected1,3-Dichlorobenzene 1.6 Not Detected 9.6 Not Detected1,4-Dichlorobenzene 1.6 Not Detected 8.3 Not Detectedalpha-Chlorotoluene 1.6 Not Detected 9.6 Not Detected1,2-Dichlorobenzene 6.4 Not Detected 47 Not Detected1,2,4-Trichlorobenzene 6.4 Not Detected 68 Not DetectedHexachlorobutadiene Container Type: 1 Liter Summa Canister Limits%RecoverySurrogates Method 104 70-130Toluene-d8 80 70-1301,2-Dichloroethane-d4 92 70-1304-Bromofluorobenzene Page 12 of 28 Client Sample ID: SGP-8 Lab ID#: 2402559A-04A EPA METHOD TO-15 GC/MS FULL SCAN a030515File Name: Dil. Factor:1.87 Date of Collection: 2/20/24 3:01:00 PM Date of Analysis: 3/5/24 08:21 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 0.94 Not Detected 4.6 Not DetectedFreon 12 0.94 Not Detected 6.5 Not DetectedFreon 114 9.4 Not Detected 19 Not DetectedChloromethane 0.94 Not Detected 2.4 Not DetectedVinyl Chloride 0.94 Not Detected 2.1 Not Detected1,3-Butadiene 9.4 Not Detected 36 Not DetectedBromomethane 3.7 Not Detected 9.9 Not DetectedChloroethane 0.94 Not Detected 5.2 Not DetectedFreon 11 9.4 Not Detected 18 Not DetectedEthanol 0.94 Not Detected 7.2 Not DetectedFreon 113 0.94 Not Detected 3.7 Not Detected1,1-Dichloroethene 9.4 17 22 41Acetone 3.7 Not Detected 9.2 Not Detected2-Propanol 3.7 5.6 12 18Carbon Disulfide 3.7 Not Detected 12 Not Detected3-Chloropropene 9.4 Not Detected 32 Not DetectedMethylene Chloride 3.7 Not Detected 13 Not DetectedMethyl tert-butyl ether 0.94 Not Detected 3.7 Not Detectedtrans-1,2-Dichloroethene 0.94 Not Detected 3.3 Not DetectedHexane 0.94 Not Detected 3.8 Not Detected1,1-Dichloroethane 3.7 Not Detected 11 Not Detected2-Butanone (Methyl Ethyl Ketone) 0.94 Not Detected 3.7 Not Detectedcis-1,2-Dichloroethene 0.94 Not Detected 2.8 Not DetectedTetrahydrofuran 0.94 1.6 4.6 8.0Chloroform 0.94 Not Detected 5.1 Not Detected1,1,1-Trichloroethane 0.94 Not Detected 3.2 Not DetectedCyclohexane 0.94 Not Detected 5.9 Not DetectedCarbon Tetrachloride 0.94 Not Detected 4.4 Not Detected2,2,4-Trimethylpentane 0.94 Not Detected 3.0 Not DetectedBenzene 0.94 Not Detected 3.8 Not Detected1,2-Dichloroethane 0.94 Not Detected 3.8 Not DetectedHeptane 0.94 Not Detected 5.0 Not DetectedTrichloroethene 0.94 Not Detected 4.3 Not Detected1,2-Dichloropropane 3.7 Not Detected 13 Not Detected1,4-Dioxane 0.94 Not Detected 6.3 Not DetectedBromodichloromethane 0.94 Not Detected 4.2 Not Detectedcis-1,3-Dichloropropene 0.94 Not Detected 3.8 Not Detected4-Methyl-2-pentanone 1.9 Not Detected 7.0 Not DetectedToluene 0.94 Not Detected 4.2 Not Detectedtrans-1,3-Dichloropropene 0.94 Not Detected 5.1 Not Detected1,1,2-Trichloroethane 0.94 Not Detected 6.3 Not DetectedTetrachloroethene 3.7 Not Detected 15 Not Detected2-Hexanone Page 13 of 28 Client Sample ID: SGP-8 Lab ID#: 2402559A-04A EPA METHOD TO-15 GC/MS FULL SCAN a030515File Name: Dil. Factor:1.87 Date of Collection: 2/20/24 3:01:00 PM Date of Analysis: 3/5/24 08:21 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 0.94 Not Detected 8.0 Not DetectedDibromochloromethane 0.94 Not Detected 7.2 Not Detected1,2-Dibromoethane (EDB) 0.94 Not Detected 4.3 Not DetectedChlorobenzene 0.94 Not Detected 4.0 Not DetectedEthyl Benzene 1.9 Not Detected 8.1 Not Detectedm,p-Xylene 0.94 Not Detected 4.1 Not Detectedo-Xylene 0.94 Not Detected 4.0 Not DetectedStyrene 0.94 Not Detected 9.7 Not DetectedBromoform 0.94 Not Detected 4.6 Not DetectedCumene 0.94 Not Detected 6.4 Not Detected1,1,2,2-Tetrachloroethane 0.94 Not Detected 4.6 Not DetectedPropylbenzene 0.94 Not Detected 4.6 Not Detected4-Ethyltoluene 0.94 Not Detected 4.6 Not Detected1,3,5-Trimethylbenzene 0.94 Not Detected 4.6 Not Detected1,2,4-Trimethylbenzene 0.94 Not Detected 5.6 Not Detected1,3-Dichlorobenzene 0.94 Not Detected 5.6 Not Detected1,4-Dichlorobenzene 0.94 Not Detected 4.8 Not Detectedalpha-Chlorotoluene 0.94 Not Detected 5.6 Not Detected1,2-Dichlorobenzene 3.7 Not Detected 28 Not Detected1,2,4-Trichlorobenzene 3.7 Not Detected 40 Not DetectedHexachlorobutadiene Container Type: 1 Liter Summa Canister Limits%RecoverySurrogates Method 103 70-130Toluene-d8 95 70-1301,2-Dichloroethane-d4 92 70-1304-Bromofluorobenzene Page 14 of 28 Client Sample ID: SGP-10 Lab ID#: 2402559A-05A EPA METHOD TO-15 GC/MS FULL SCAN a030516File Name: Dil. Factor:1.85 Date of Collection: 2/20/24 10:59:00 AM Date of Analysis: 3/5/24 08:58 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 0.92 Not Detected 4.6 Not DetectedFreon 12 0.92 Not Detected 6.5 Not DetectedFreon 114 9.2 Not Detected 19 Not DetectedChloromethane 0.92 Not Detected 2.4 Not DetectedVinyl Chloride 0.92 Not Detected 2.0 Not Detected1,3-Butadiene 9.2 Not Detected 36 Not DetectedBromomethane 3.7 Not Detected 9.8 Not DetectedChloroethane 0.92 Not Detected 5.2 Not DetectedFreon 11 9.2 Not Detected 17 Not DetectedEthanol 0.92 Not Detected 7.1 Not DetectedFreon 113 0.92 Not Detected 3.7 Not Detected1,1-Dichloroethene 9.2 Not Detected 22 Not DetectedAcetone 3.7 Not Detected 9.1 Not Detected2-Propanol 3.7 9.5 12 30Carbon Disulfide 3.7 Not Detected 12 Not Detected3-Chloropropene 9.2 Not Detected 32 Not DetectedMethylene Chloride 3.7 Not Detected 13 Not DetectedMethyl tert-butyl ether 0.92 Not Detected 3.7 Not Detectedtrans-1,2-Dichloroethene 0.92 Not Detected 3.3 Not DetectedHexane 0.92 Not Detected 3.7 Not Detected1,1-Dichloroethane 3.7 Not Detected 11 Not Detected2-Butanone (Methyl Ethyl Ketone) 0.92 Not Detected 3.7 Not Detectedcis-1,2-Dichloroethene 0.92 Not Detected 2.7 Not DetectedTetrahydrofuran 0.92 Not Detected 4.5 Not DetectedChloroform 0.92 Not Detected 5.0 Not Detected1,1,1-Trichloroethane 0.92 2.5 3.2 8.6Cyclohexane 0.92 Not Detected 5.8 Not DetectedCarbon Tetrachloride 0.92 Not Detected 4.3 Not Detected2,2,4-Trimethylpentane 0.92 Not Detected 3.0 Not DetectedBenzene 0.92 Not Detected 3.7 Not Detected1,2-Dichloroethane 0.92 Not Detected 3.8 Not DetectedHeptane 0.92 Not Detected 5.0 Not DetectedTrichloroethene 0.92 Not Detected 4.3 Not Detected1,2-Dichloropropane 3.7 Not Detected 13 Not Detected1,4-Dioxane 0.92 Not Detected 6.2 Not DetectedBromodichloromethane 0.92 Not Detected 4.2 Not Detectedcis-1,3-Dichloropropene 0.92 Not Detected 3.8 Not Detected4-Methyl-2-pentanone 1.8 Not Detected 7.0 Not DetectedToluene 0.92 Not Detected 4.2 Not Detectedtrans-1,3-Dichloropropene 0.92 Not Detected 5.0 Not Detected1,1,2-Trichloroethane 0.92 2.7 6.3 18Tetrachloroethene 3.7 Not Detected 15 Not Detected2-Hexanone Page 15 of 28 Client Sample ID: SGP-10 Lab ID#: 2402559A-05A EPA METHOD TO-15 GC/MS FULL SCAN a030516File Name: Dil. Factor:1.85 Date of Collection: 2/20/24 10:59:00 AM Date of Analysis: 3/5/24 08:58 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 0.92 Not Detected 7.9 Not DetectedDibromochloromethane 0.92 Not Detected 7.1 Not Detected1,2-Dibromoethane (EDB) 0.92 Not Detected 4.2 Not DetectedChlorobenzene 0.92 Not Detected 4.0 Not DetectedEthyl Benzene 1.8 Not Detected 8.0 Not Detectedm,p-Xylene 0.92 Not Detected 4.0 Not Detectedo-Xylene 0.92 Not Detected 3.9 Not DetectedStyrene 0.92 Not Detected 9.6 Not DetectedBromoform 0.92 Not Detected 4.5 Not DetectedCumene 0.92 Not Detected 6.4 Not Detected1,1,2,2-Tetrachloroethane 0.92 Not Detected 4.5 Not DetectedPropylbenzene 0.92 Not Detected 4.5 Not Detected4-Ethyltoluene 0.92 Not Detected 4.5 Not Detected1,3,5-Trimethylbenzene 0.92 Not Detected 4.5 Not Detected1,2,4-Trimethylbenzene 0.92 Not Detected 5.6 Not Detected1,3-Dichlorobenzene 0.92 Not Detected 5.6 Not Detected1,4-Dichlorobenzene 0.92 Not Detected 4.8 Not Detectedalpha-Chlorotoluene 0.92 Not Detected 5.6 Not Detected1,2-Dichlorobenzene 3.7 Not Detected 27 Not Detected1,2,4-Trichlorobenzene 3.7 Not Detected 39 Not DetectedHexachlorobutadiene Container Type: 1 Liter Summa Canister Limits%RecoverySurrogates Method 104 70-130Toluene-d8 94 70-1301,2-Dichloroethane-d4 92 70-1304-Bromofluorobenzene Page 16 of 28 Client Sample ID: SGP-11 Lab ID#: 2402559A-06A EPA METHOD TO-15 GC/MS FULL SCAN a030517File Name: Dil. Factor:1.89 Date of Collection: 2/20/24 3:46:00 PM Date of Analysis: 3/5/24 11:08 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 0.94 Not Detected 4.7 Not DetectedFreon 12 0.94 Not Detected 6.6 Not DetectedFreon 114 9.4 Not Detected 20 Not DetectedChloromethane 0.94 Not Detected 2.4 Not DetectedVinyl Chloride 0.94 Not Detected 2.1 Not Detected1,3-Butadiene 9.4 Not Detected 37 Not DetectedBromomethane 3.8 Not Detected 10 Not DetectedChloroethane 0.94 Not Detected 5.3 Not DetectedFreon 11 9.4 Not Detected 18 Not DetectedEthanol 0.94 Not Detected 7.2 Not DetectedFreon 113 0.94 Not Detected 3.7 Not Detected1,1-Dichloroethene 9.4 Not Detected 22 Not DetectedAcetone 3.8 Not Detected 9.3 Not Detected2-Propanol 3.8 8.7 12 27Carbon Disulfide 3.8 Not Detected 12 Not Detected3-Chloropropene 9.4 Not Detected 33 Not DetectedMethylene Chloride 3.8 Not Detected 14 Not DetectedMethyl tert-butyl ether 0.94 Not Detected 3.7 Not Detectedtrans-1,2-Dichloroethene 0.94 Not Detected 3.3 Not DetectedHexane 0.94 Not Detected 3.8 Not Detected1,1-Dichloroethane 3.8 Not Detected 11 Not Detected2-Butanone (Methyl Ethyl Ketone) 0.94 Not Detected 3.7 Not Detectedcis-1,2-Dichloroethene 0.94 Not Detected 2.8 Not DetectedTetrahydrofuran 0.94 Not Detected 4.6 Not DetectedChloroform 0.94 Not Detected 5.2 Not Detected1,1,1-Trichloroethane 0.94 1.4 3.2 5.0Cyclohexane 0.94 Not Detected 5.9 Not DetectedCarbon Tetrachloride 0.94 Not Detected 4.4 Not Detected2,2,4-Trimethylpentane 0.94 Not Detected 3.0 Not DetectedBenzene 0.94 Not Detected 3.8 Not Detected1,2-Dichloroethane 0.94 Not Detected 3.9 Not DetectedHeptane 0.94 Not Detected 5.1 Not DetectedTrichloroethene 0.94 Not Detected 4.4 Not Detected1,2-Dichloropropane 3.8 Not Detected 14 Not Detected1,4-Dioxane 0.94 Not Detected 6.3 Not DetectedBromodichloromethane 0.94 Not Detected 4.3 Not Detectedcis-1,3-Dichloropropene 0.94 Not Detected 3.9 Not Detected4-Methyl-2-pentanone 1.9 Not Detected 7.1 Not DetectedToluene 0.94 Not Detected 4.3 Not Detectedtrans-1,3-Dichloropropene 0.94 Not Detected 5.2 Not Detected1,1,2-Trichloroethane 0.94 1.7 6.4 12Tetrachloroethene 3.8 Not Detected 15 Not Detected2-Hexanone Page 17 of 28 Client Sample ID: SGP-11 Lab ID#: 2402559A-06A EPA METHOD TO-15 GC/MS FULL SCAN a030517File Name: Dil. Factor:1.89 Date of Collection: 2/20/24 3:46:00 PM Date of Analysis: 3/5/24 11:08 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 0.94 Not Detected 8.0 Not DetectedDibromochloromethane 0.94 Not Detected 7.3 Not Detected1,2-Dibromoethane (EDB) 0.94 Not Detected 4.4 Not DetectedChlorobenzene 0.94 Not Detected 4.1 Not DetectedEthyl Benzene 1.9 Not Detected 8.2 Not Detectedm,p-Xylene 0.94 Not Detected 4.1 Not Detectedo-Xylene 0.94 Not Detected 4.0 Not DetectedStyrene 0.94 Not Detected 9.8 Not DetectedBromoform 0.94 Not Detected 4.6 Not DetectedCumene 0.94 Not Detected 6.5 Not Detected1,1,2,2-Tetrachloroethane 0.94 Not Detected 4.6 Not DetectedPropylbenzene 0.94 Not Detected 4.6 Not Detected4-Ethyltoluene 0.94 Not Detected 4.6 Not Detected1,3,5-Trimethylbenzene 0.94 Not Detected 4.6 Not Detected1,2,4-Trimethylbenzene 0.94 Not Detected 5.7 Not Detected1,3-Dichlorobenzene 0.94 Not Detected 5.7 Not Detected1,4-Dichlorobenzene 0.94 Not Detected 4.9 Not Detectedalpha-Chlorotoluene 0.94 Not Detected 5.7 Not Detected1,2-Dichlorobenzene 3.8 Not Detected 28 Not Detected1,2,4-Trichlorobenzene 3.8 Not Detected 40 Not DetectedHexachlorobutadiene Container Type: 1 Liter Summa Canister Limits%RecoverySurrogates Method 88 70-130Toluene-d8 84 70-1301,2-Dichloroethane-d4 94 70-1304-Bromofluorobenzene Page 18 of 28 Client Sample ID: DUP-B Lab ID#: 2402559A-07A EPA METHOD TO-15 GC/MS FULL SCAN a030518File Name: Dil. Factor:2.02 Date of Collection: 2/20/24 11:52:00 AM Date of Analysis: 3/5/24 11:45 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 1.0 35 5.0 170Freon 12 1.0 68 7.1 470Freon 114 10 Not Detected 21 Not DetectedChloromethane 1.0 Not Detected 2.6 Not DetectedVinyl Chloride 1.0 Not Detected 2.2 Not Detected1,3-Butadiene 10 Not Detected 39 Not DetectedBromomethane 4.0 Not Detected 11 Not DetectedChloroethane 1.0 Not Detected 5.7 Not DetectedFreon 11 10 Not Detected 19 Not DetectedEthanol 1.0 Not Detected 7.7 Not DetectedFreon 113 1.0 Not Detected 4.0 Not Detected1,1-Dichloroethene 10 12 24 28Acetone 4.0 Not Detected 9.9 Not Detected2-Propanol 4.0 Not Detected 12 Not DetectedCarbon Disulfide 4.0 Not Detected 13 Not Detected3-Chloropropene 10 Not Detected 35 Not DetectedMethylene Chloride 4.0 Not Detected 14 Not DetectedMethyl tert-butyl ether 1.0 Not Detected 4.0 Not Detectedtrans-1,2-Dichloroethene 1.0 5.8 3.6 20Hexane 1.0 Not Detected 4.1 Not Detected1,1-Dichloroethane 4.0 Not Detected 12 Not Detected2-Butanone (Methyl Ethyl Ketone) 1.0 Not Detected 4.0 Not Detectedcis-1,2-Dichloroethene 1.0 Not Detected 3.0 Not DetectedTetrahydrofuran 1.0 Not Detected 4.9 Not DetectedChloroform 1.0 Not Detected 5.5 Not Detected1,1,1-Trichloroethane 1.0 18 3.5 62Cyclohexane 1.0 Not Detected 6.4 Not DetectedCarbon Tetrachloride 1.0 1.5 4.7 7.12,2,4-Trimethylpentane 1.0 2.9 3.2 9.2Benzene 1.0 Not Detected 4.1 Not Detected1,2-Dichloroethane 1.0 1.3 4.1 5.3Heptane 1.0 Not Detected 5.4 Not DetectedTrichloroethene 1.0 Not Detected 4.7 Not Detected1,2-Dichloropropane 4.0 Not Detected 14 Not Detected1,4-Dioxane 1.0 Not Detected 6.8 Not DetectedBromodichloromethane 1.0 Not Detected 4.6 Not Detectedcis-1,3-Dichloropropene 1.0 Not Detected 4.1 Not Detected4-Methyl-2-pentanone 2.0 Not Detected 7.6 Not DetectedToluene 1.0 Not Detected 4.6 Not Detectedtrans-1,3-Dichloropropene 1.0 Not Detected 5.5 Not Detected1,1,2-Trichloroethane 1.0 Not Detected 6.8 Not DetectedTetrachloroethene 4.0 Not Detected 16 Not Detected2-Hexanone Page 19 of 28 Client Sample ID: DUP-B Lab ID#: 2402559A-07A EPA METHOD TO-15 GC/MS FULL SCAN a030518File Name: Dil. Factor:2.02 Date of Collection: 2/20/24 11:52:00 AM Date of Analysis: 3/5/24 11:45 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 1.0 Not Detected 8.6 Not DetectedDibromochloromethane 1.0 Not Detected 7.8 Not Detected1,2-Dibromoethane (EDB) 1.0 Not Detected 4.6 Not DetectedChlorobenzene 1.0 Not Detected 4.4 Not DetectedEthyl Benzene 2.0 2.7 8.8 12m,p-Xylene 1.0 1.1 4.4 4.7o-Xylene 1.0 Not Detected 4.3 Not DetectedStyrene 1.0 Not Detected 10 Not DetectedBromoform 1.0 4.8 5.0 23Cumene 1.0 Not Detected 6.9 Not Detected1,1,2,2-Tetrachloroethane 1.0 Not Detected 5.0 Not DetectedPropylbenzene 1.0 2.0 5.0 104-Ethyltoluene 1.0 1.4 5.0 6.91,3,5-Trimethylbenzene 1.0 Not Detected 5.0 Not Detected1,2,4-Trimethylbenzene 1.0 Not Detected 6.1 Not Detected1,3-Dichlorobenzene 1.0 Not Detected 6.1 Not Detected1,4-Dichlorobenzene 1.0 Not Detected 5.2 Not Detectedalpha-Chlorotoluene 1.0 Not Detected 6.1 Not Detected1,2-Dichlorobenzene 4.0 Not Detected 30 Not Detected1,2,4-Trichlorobenzene 4.0 Not Detected 43 Not DetectedHexachlorobutadiene Container Type: 1 Liter Summa Canister Limits%RecoverySurrogates Method 108 70-130Toluene-d8 96 70-1301,2-Dichloroethane-d4 95 70-1304-Bromofluorobenzene Page 20 of 28 Client Sample ID: Lab Blank Lab ID#: 2402559A-08A EPA METHOD TO-15 GC/MS FULL SCAN a030506cFile Name: Dil. Factor:1.00 Date of Collection: NA Date of Analysis: 3/5/24 02:04 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 0.50 Not Detected 2.5 Not DetectedFreon 12 0.50 Not Detected 3.5 Not DetectedFreon 114 5.0 Not Detected 10 Not DetectedChloromethane 0.50 Not Detected 1.3 Not DetectedVinyl Chloride 0.50 Not Detected 1.1 Not Detected1,3-Butadiene 5.0 Not Detected 19 Not DetectedBromomethane 2.0 Not Detected 5.3 Not DetectedChloroethane 0.50 Not Detected 2.8 Not DetectedFreon 11 5.0 Not Detected 9.4 Not DetectedEthanol 0.50 Not Detected 3.8 Not DetectedFreon 113 0.50 Not Detected 2.0 Not Detected1,1-Dichloroethene 5.0 Not Detected 12 Not DetectedAcetone 2.0 Not Detected 4.9 Not Detected2-Propanol 2.0 Not Detected 6.2 Not DetectedCarbon Disulfide 2.0 Not Detected 6.3 Not Detected3-Chloropropene 5.0 Not Detected 17 Not DetectedMethylene Chloride 2.0 Not Detected 7.2 Not DetectedMethyl tert-butyl ether 0.50 Not Detected 2.0 Not Detectedtrans-1,2-Dichloroethene 0.50 Not Detected 1.8 Not DetectedHexane 0.50 Not Detected 2.0 Not Detected1,1-Dichloroethane 2.0 Not Detected 5.9 Not Detected2-Butanone (Methyl Ethyl Ketone) 0.50 Not Detected 2.0 Not Detectedcis-1,2-Dichloroethene 0.50 Not Detected 1.5 Not DetectedTetrahydrofuran 0.50 Not Detected 2.4 Not DetectedChloroform 0.50 Not Detected 2.7 Not Detected1,1,1-Trichloroethane 0.50 Not Detected 1.7 Not DetectedCyclohexane 0.50 Not Detected 3.1 Not DetectedCarbon Tetrachloride 0.50 Not Detected 2.3 Not Detected2,2,4-Trimethylpentane 0.50 Not Detected 1.6 Not DetectedBenzene 0.50 Not Detected 2.0 Not Detected1,2-Dichloroethane 0.50 Not Detected 2.0 Not DetectedHeptane 0.50 Not Detected 2.7 Not DetectedTrichloroethene 0.50 Not Detected 2.3 Not Detected1,2-Dichloropropane 2.0 Not Detected 7.2 Not Detected1,4-Dioxane 0.50 Not Detected 3.4 Not DetectedBromodichloromethane 0.50 Not Detected 2.3 Not Detectedcis-1,3-Dichloropropene 0.50 Not Detected 2.0 Not Detected4-Methyl-2-pentanone 1.0 Not Detected 3.8 Not DetectedToluene 0.50 Not Detected 2.3 Not Detectedtrans-1,3-Dichloropropene 0.50 Not Detected 2.7 Not Detected1,1,2-Trichloroethane 0.50 Not Detected 3.4 Not DetectedTetrachloroethene 2.0 Not Detected 8.2 Not Detected2-Hexanone Page 21 of 28 Client Sample ID: Lab Blank Lab ID#: 2402559A-08A EPA METHOD TO-15 GC/MS FULL SCAN a030506cFile Name: Dil. Factor:1.00 Date of Collection: NA Date of Analysis: 3/5/24 02:04 PM (ug/m3)(ug/m3)(ppbv)(ppbv)Compound AmountRpt. LimitAmountRpt. Limit 0.50 Not Detected 4.2 Not DetectedDibromochloromethane 0.50 Not Detected 3.8 Not Detected1,2-Dibromoethane (EDB) 0.50 Not Detected 2.3 Not DetectedChlorobenzene 0.50 Not Detected 2.2 Not DetectedEthyl Benzene 1.0 Not Detected 4.3 Not Detectedm,p-Xylene 0.50 Not Detected 2.2 Not Detectedo-Xylene 0.50 Not Detected 2.1 Not DetectedStyrene 0.50 Not Detected 5.2 Not DetectedBromoform 0.50 Not Detected 2.4 Not DetectedCumene 0.50 Not Detected 3.4 Not Detected1,1,2,2-Tetrachloroethane 0.50 Not Detected 2.4 Not DetectedPropylbenzene 0.50 Not Detected 2.4 Not Detected4-Ethyltoluene 0.50 Not Detected 2.4 Not Detected1,3,5-Trimethylbenzene 0.50 Not Detected 2.4 Not Detected1,2,4-Trimethylbenzene 0.50 Not Detected 3.0 Not Detected1,3-Dichlorobenzene 0.50 Not Detected 3.0 Not Detected1,4-Dichlorobenzene 0.50 Not Detected 2.6 Not Detectedalpha-Chlorotoluene 0.50 Not Detected 3.0 Not Detected1,2-Dichlorobenzene 2.0 Not Detected 15 Not Detected1,2,4-Trichlorobenzene 2.0 Not Detected 21 Not DetectedHexachlorobutadiene Container Type: NA - Not Applicable Limits%RecoverySurrogates Method 92 70-130Toluene-d8 84 70-1301,2-Dichloroethane-d4 92 70-1304-Bromofluorobenzene Page 22 of 28 Client Sample ID: CCV Lab ID#: 2402559A-09A EPA METHOD TO-15 GC/MS FULL SCAN a030503File Name: Dil. Factor:1.00 Date of Collection: NA Date of Analysis: 3/5/24 12:02 PM %RecoveryCompound 91Freon 12 87Freon 114 82Chloromethane 91Vinyl Chloride 851,3-Butadiene 101Bromomethane 79Chloroethane 92Freon 11 76Ethanol 88Freon 113 981,1-Dichloroethene 94Acetone 732-Propanol 95Carbon Disulfide 1003-Chloropropene 91Methylene Chloride 92Methyl tert-butyl ether 109trans-1,2-Dichloroethene 92Hexane 1001,1-Dichloroethane 962-Butanone (Methyl Ethyl Ketone) 108cis-1,2-Dichloroethene 75Tetrahydrofuran 93Chloroform 941,1,1-Trichloroethane 91Cyclohexane 95Carbon Tetrachloride 902,2,4-Trimethylpentane 97Benzene 971,2-Dichloroethane 96Heptane 100Trichloroethene 981,2-Dichloropropane 991,4-Dioxane 104Bromodichloromethane 100cis-1,3-Dichloropropene 934-Methyl-2-pentanone 100Toluene 95trans-1,3-Dichloropropene 1011,1,2-Trichloroethane 93Tetrachloroethene 922-Hexanone Page 23 of 28 Client Sample ID: CCV Lab ID#: 2402559A-09A EPA METHOD TO-15 GC/MS FULL SCAN a030503File Name: Dil. Factor:1.00 Date of Collection: NA Date of Analysis: 3/5/24 12:02 PM %RecoveryCompound 105Dibromochloromethane 1041,2-Dibromoethane (EDB) 97Chlorobenzene 98Ethyl Benzene 98m,p-Xylene 94o-Xylene 99Styrene 106Bromoform 96Cumene 1021,1,2,2-Tetrachloroethane 100Propylbenzene 1014-Ethyltoluene 991,3,5-Trimethylbenzene 1001,2,4-Trimethylbenzene 1011,3-Dichlorobenzene 981,4-Dichlorobenzene 101alpha-Chlorotoluene 981,2-Dichlorobenzene 911,2,4-Trichlorobenzene 91Hexachlorobutadiene Container Type: NA - Not Applicable Limits%RecoverySurrogates Method 106 70-130Toluene-d8 93 70-1301,2-Dichloroethane-d4 100 70-1304-Bromofluorobenzene Page 24 of 28 Client Sample ID: LCS Lab ID#: 2402559A-10A EPA METHOD TO-15 GC/MS FULL SCAN a030504File Name: Dil. Factor:1.00 Date of Collection: NA Date of Analysis: 3/5/24 12:37 PM Limits%RecoveryCompound Method 83 70-130Freon 12 84 70-130Freon 114 77 70-130Chloromethane 82 70-130Vinyl Chloride 76 70-1301,3-Butadiene 93 70-130Bromomethane 72 70-130Chloroethane 83 70-130Freon 11 84 70-130Ethanol 79 70-130Freon 113 86 70-1301,1-Dichloroethene 82 70-130Acetone 68 Q 70-1302-Propanol 87 70-130Carbon Disulfide 87 70-1303-Chloropropene 77 70-130Methylene Chloride 77 70-130Methyl tert-butyl ether 87 70-130trans-1,2-Dichloroethene 77 70-130Hexane 84 70-1301,1-Dichloroethane 82 70-1302-Butanone (Methyl Ethyl Ketone) 87 70-130cis-1,2-Dichloroethene 73 70-130Tetrahydrofuran 85 70-130Chloroform 88 70-1301,1,1-Trichloroethane 88 70-130Cyclohexane 92 70-130Carbon Tetrachloride 82 70-1302,2,4-Trimethylpentane 95 70-130Benzene 92 70-1301,2-Dichloroethane 92 70-130Heptane 99 70-130Trichloroethene 92 70-1301,2-Dichloropropane 90 70-1301,4-Dioxane 93 70-130Bromodichloromethane 90 70-130cis-1,3-Dichloropropene 84 70-1304-Methyl-2-pentanone 89 70-130Toluene 94 70-130trans-1,3-Dichloropropene 100 70-1301,1,2-Trichloroethane 94 70-130Tetrachloroethene 91 70-1302-Hexanone Page 25 of 28 Client Sample ID: LCS Lab ID#: 2402559A-10A EPA METHOD TO-15 GC/MS FULL SCAN a030504File Name: Dil. Factor:1.00 Date of Collection: NA Date of Analysis: 3/5/24 12:37 PM Limits%RecoveryCompound Method 102 70-130Dibromochloromethane 102 70-1301,2-Dibromoethane (EDB) 98 70-130Chlorobenzene 100 70-130Ethyl Benzene 96 70-130m,p-Xylene 95 70-130o-Xylene 100 70-130Styrene 104 70-130Bromoform 96 70-130Cumene 102 70-1301,1,2,2-Tetrachloroethane 98 70-130Propylbenzene 99 70-1304-Ethyltoluene 99 70-1301,3,5-Trimethylbenzene 100 70-1301,2,4-Trimethylbenzene 98 70-1301,3-Dichlorobenzene 97 70-1301,4-Dichlorobenzene 101 70-130alpha-Chlorotoluene 98 70-1301,2-Dichlorobenzene 92 70-1301,2,4-Trichlorobenzene 93 70-130Hexachlorobutadiene Q = Exceeds Quality Control limits. Container Type: NA - Not Applicable Limits%RecoverySurrogates Method 93 70-130Toluene-d8 85 70-1301,2-Dichloroethane-d4 99 70-1304-Bromofluorobenzene Page 26 of 28 Client Sample ID: LCSD Lab ID#: 2402559A-10AA EPA METHOD TO-15 GC/MS FULL SCAN a030505File Name: Dil. Factor:1.00 Date of Collection: NA Date of Analysis: 3/5/24 01:12 PM Limits%RecoveryCompound Method 84 70-130Freon 12 85 70-130Freon 114 77 70-130Chloromethane 84 70-130Vinyl Chloride 77 70-1301,3-Butadiene 92 70-130Bromomethane 73 70-130Chloroethane 84 70-130Freon 11 84 70-130Ethanol 81 70-130Freon 113 86 70-1301,1-Dichloroethene 83 70-130Acetone 69 Q 70-1302-Propanol 87 70-130Carbon Disulfide 84 70-1303-Chloropropene 76 70-130Methylene Chloride 78 70-130Methyl tert-butyl ether 87 70-130trans-1,2-Dichloroethene 78 70-130Hexane 84 70-1301,1-Dichloroethane 82 70-1302-Butanone (Methyl Ethyl Ketone) 87 70-130cis-1,2-Dichloroethene 74 70-130Tetrahydrofuran 86 70-130Chloroform 89 70-1301,1,1-Trichloroethane 90 70-130Cyclohexane 93 70-130Carbon Tetrachloride 83 70-1302,2,4-Trimethylpentane 93 70-130Benzene 92 70-1301,2-Dichloroethane 92 70-130Heptane 98 70-130Trichloroethene 90 70-1301,2-Dichloropropane 94 70-1301,4-Dioxane 96 70-130Bromodichloromethane 95 70-130cis-1,3-Dichloropropene 84 70-1304-Methyl-2-pentanone 94 70-130Toluene 93 70-130trans-1,3-Dichloropropene 99 70-1301,1,2-Trichloroethane 94 70-130Tetrachloroethene 90 70-1302-Hexanone Page 27 of 28 Client Sample ID: LCSD Lab ID#: 2402559A-10AA EPA METHOD TO-15 GC/MS FULL SCAN a030505File Name: Dil. Factor:1.00 Date of Collection: NA Date of Analysis: 3/5/24 01:12 PM Limits%RecoveryCompound Method 102 70-130Dibromochloromethane 102 70-1301,2-Dibromoethane (EDB) 98 70-130Chlorobenzene 100 70-130Ethyl Benzene 96 70-130m,p-Xylene 94 70-130o-Xylene 99 70-130Styrene 104 70-130Bromoform 94 70-130Cumene 101 70-1301,1,2,2-Tetrachloroethane 97 70-130Propylbenzene 98 70-1304-Ethyltoluene 98 70-1301,3,5-Trimethylbenzene 99 70-1301,2,4-Trimethylbenzene 98 70-1301,3-Dichlorobenzene 96 70-1301,4-Dichlorobenzene 100 70-130alpha-Chlorotoluene 96 70-1301,2-Dichlorobenzene 94 70-1301,2,4-Trichlorobenzene 94 70-130Hexachlorobutadiene Q = Exceeds Quality Control limits. Container Type: NA - Not Applicable Limits%RecoverySurrogates Method 99 70-130Toluene-d8 86 70-1301,2-Dichloroethane-d4 96 70-1304-Bromofluorobenzene Page 28 of 28 3/7/2024 Ms. Laura de Sousa ATLAS (Formerly ATC Associates) 2725 East Millbrook Road Suite 121 Raleigh NC 27604 Project Name: Elon College LE Project #: Dear Ms. Laura de Sousa The following report includes the data for the above referenced project for sample(s) received on 2/23/2024 at Eurofins Air Toxics LLC. The data and associated QC analyzed by Modified ASTM D-1946 are compliant with the project requirements or laboratory criteria with the exception of the deviations noted in the attached case narrative. Thank you for choosing Eurofins Air Toxics LLC. for your air analysis needs. Eurofins Air Toxics Inc. is committed to providing accurate data of the highest quality. Please feel free to contact the Project Manager: Brian Whittaker at 916-985-1000 if you have any questions regarding the data in this report. Regards, Brian Whittaker Project Manager Workorder #: 2402559B Page 1 of 16 Ms. Laura de Sousa ATLAS (Formerly ATC Associates) 2725 East Millbrook Road Suite 121 Raleigh, NC 27604 WORK ORDER #: 2402559B CLIENT:BILL TO: PHONE: Ms. Laura de Sousa ATLAS (Formerly ATC Associates) 2725 East Millbrook Road Suite 121 Raleigh, NC 27604 (919) 871-0999 (919) 871-0335 02/23/2024 DATE COMPLETED:03/07/2024 P.O. #PRLU0730W PROJECT #Elon College LE Work Order Summary FAX: DATE RECEIVED:CONTACT:Brian Whittaker NAMEFRACTION #TEST VAC./PRES. RECEIPT PRESSURE FINAL 01A LFGP-1 Modified ASTM D-1946 2.4 "Hg 9.9 psi 02A LFGP-2 Modified ASTM D-1946 4.9 "Hg 9.8 psi 03A SGP-6 Modified ASTM D-1946 14.3 "Hg 9.9 psi 04A SGP-8 Modified ASTM D-1946 3.3 "Hg 9.8 psi 05A SGP-10 Modified ASTM D-1946 2.8 "Hg 10 psi 06A SGP-11 Modified ASTM D-1946 3.5 "Hg 9.8 psi 07A DUP-B Modified ASTM D-1946 4.9 "Hg 10.1 psi 08A Lab Blank Modified ASTM D-1946 NA NA 09A CCV Modified ASTM D-1946 NA NA 10A LCS Modified ASTM D-1946 NA NA 10AA LCSD Modified ASTM D-1946 NA NA CERTIFIED BY: Technical Director DATE: 03/07/24 Page 2 of 16 Certification numbers: AZ Licensure AZ0775, FL NELAP – E87680, LA NELAP – 02089, NH NELAP – 209222, NJ NELAP - CA016, NY NELAP - 11291, TX NELAP – T104704434-22-18, UT NELAP – CA009332022-14, VA NELAP - 12240, WA ELAP - C935 Name of Accreditation Body: NELAP/ORELAP (Oregon Environmental Laboratory Accreditation Program) CA300005-017 Eurofins Environment Testing Northern California, LLC certifies that the test results contained in this report meet all requirements of the 2016 TNI Standard. This report shall not be reproduced, except in full, without the written approval of Eurofins Air Toxics, LLC. 180 BLUE RAVINE ROAD, SUITE B FOLSOM, CA - 95630 (916) 985-1000 LABORATORY NARRATIVE Modified ASTM D-1946 ATLAS (Formerly ATC Associates) Workorder# 2402559B Seven 1 Liter Summa Canister samples were received on February 23, 2024. The laboratory performed analysis via Modified ASTM Method D-1946 for Methane in air using GC/FID. The method involves direct injection of 1.0 mL of sample. Method modifications taken to run these samples are summarized in the table below. Specific project requirements may over-ride the EATL modifications. Requirement ATL ModificationsASTM D-1946 Calibration A single point calibration is performed using a reference standard closely matching the composition of the unknown. A minimum of 5-point calibration curve is performed. Quantitation is based on average Response Factor. Reference Standard The composition of any reference standard must be known to within 0.01 mol % for any component. The standards used by ATL are blended to a >/= 95% accuracy. Sample Injection Volume Components whose concentrations are in excess of 5 % should not be analyzed by using sample volumes greater than 0.5 mL. The sample container is connected directly to a fixed volume sample loop of 1.0 mL on the GC. Linear range is defined by the calibration curve. Bags are loaded by vacuum. Normalization Normalize the mole percent values by multiplying each value by 100 and dividing by the sum of the original values. The sum of the original values should not differ from 100% by more than 1.0%. Results are not normalized. The sum of the reported values can differ from 100% by as much as 15%, either due to analytical variability or an unusual sample matrix. Precision Precision requirements established at each concentration level. Duplicates should agree within 25% RPD for detections > 5 X's the RL. Receiving Notes There were no receiving discrepancies. There were no analytical discrepancies. Analytical Notes Page 3 of 16 Seven qualifiers may have been used on the data analysis sheets and indicate as follows: B - Compound present in laboratory blank greater than reporting limit. J - Estimated value. E - Exceeds instrument calibration range. S - Saturated peak. Q - Exceeds quality control limits. U - Compound analyzed for but not detected above the detection limit. M - Reported value may be biased due to apparent matrix interferences. File extensions may have been used on the data analysis sheets and indicates as follows: a-File was requantified b-File was quantified by a second column and detector r1-File was requantified for the purpose of reissue Definition of Data Qualifying Flags Page 4 of 16 NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946 Summary of Detected Compounds Client Sample ID: LFGP-1 Lab ID#: 2402559B-01A No Detections Were Found. Client Sample ID: LFGP-2 Lab ID#: 2402559B-02A (%)(%)Compound AmountRpt. Limit 0.00020 0.37Methane Client Sample ID: SGP-6 Lab ID#: 2402559B-03A No Detections Were Found. Client Sample ID: SGP-8 Lab ID#: 2402559B-04A No Detections Were Found. Client Sample ID: SGP-10 Lab ID#: 2402559B-05A No Detections Were Found. Client Sample ID: SGP-11 Lab ID#: 2402559B-06A No Detections Were Found. Client Sample ID: DUP-B Lab ID#: 2402559B-07A (%)(%)Compound AmountRpt. Limit 0.00020 0.62Methane Page 5 of 16 Client Sample ID: LFGP-1 Lab ID#: 2402559B-01A NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946 11030134File Name: Dil. Factor:1.82 Date of Collection: 2/20/24 4:19:00 PM Date of Analysis: 3/1/24 06:49 PM (%)(%)Compound AmountRpt. Limit 0.00018 Not DetectedMethane Container Type: 1 Liter Summa Canister Page 6 of 16 Client Sample ID: LFGP-2 Lab ID#: 2402559B-02A NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946 11030135File Name: Dil. Factor:1.99 Date of Collection: 2/20/24 11:52:00 AM Date of Analysis: 3/1/24 07:15 PM (%)(%)Compound AmountRpt. Limit 0.00020 0.37Methane Container Type: 1 Liter Summa Canister Page 7 of 16 Client Sample ID: SGP-6 Lab ID#: 2402559B-03A NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946 11030136File Name: Dil. Factor:3.19 Date of Collection: 2/20/24 1:14:00 PM Date of Analysis: 3/1/24 07:45 PM (%)(%)Compound AmountRpt. Limit 0.00032 Not DetectedMethane Container Type: 1 Liter Summa Canister Page 8 of 16 Client Sample ID: SGP-8 Lab ID#: 2402559B-04A NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946 11030137File Name: Dil. Factor:1.87 Date of Collection: 2/20/24 3:01:00 PM Date of Analysis: 3/1/24 08:11 PM (%)(%)Compound AmountRpt. Limit 0.00019 Not DetectedMethane Container Type: 1 Liter Summa Canister Page 9 of 16 Client Sample ID: SGP-10 Lab ID#: 2402559B-05A NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946 11030138File Name: Dil. Factor:1.86 Date of Collection: 2/20/24 10:59:00 AM Date of Analysis: 3/1/24 08:55 PM (%)(%)Compound AmountRpt. Limit 0.00019 Not DetectedMethane Container Type: 1 Liter Summa Canister Page 10 of 16 Client Sample ID: SGP-11 Lab ID#: 2402559B-06A NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946 11030139File Name: Dil. Factor:1.88 Date of Collection: 2/20/24 3:46:00 PM Date of Analysis: 3/1/24 09:20 PM (%)(%)Compound AmountRpt. Limit 0.00019 Not DetectedMethane Container Type: 1 Liter Summa Canister Page 11 of 16 Client Sample ID: DUP-B Lab ID#: 2402559B-07A NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946 11030140File Name: Dil. Factor:2.02 Date of Collection: 2/20/24 11:52:00 AM Date of Analysis: 3/1/24 09:50 PM (%)(%)Compound AmountRpt. Limit 0.00020 0.62Methane Container Type: 1 Liter Summa Canister Page 12 of 16 Client Sample ID: Lab Blank Lab ID#: 2402559B-08A NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946 11030129File Name: Dil. Factor:1.00 Date of Collection: NA Date of Analysis: 3/1/24 04:41 PM (%)(%)Compound AmountRpt. Limit 0.00010 Not DetectedMethane Container Type: NA - Not Applicable Page 13 of 16 Client Sample ID: CCV Lab ID#: 2402559B-09A NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946 11030125File Name: Dil. Factor:1.00 Date of Collection: NA Date of Analysis: 3/1/24 02:55 PM %RecoveryCompound 97Methane Container Type: NA - Not Applicable Page 14 of 16 Client Sample ID: LCS Lab ID#: 2402559B-10A NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946 11030126File Name: Dil. Factor:1.00 Date of Collection: NA Date of Analysis: 3/1/24 03:22 PM Limits%RecoveryCompound Method 97 85-115Methane Container Type: NA - Not Applicable Page 15 of 16 Client Sample ID: LCSD Lab ID#: 2402559B-10AA NATURAL GAS ANALYSIS BY MODIFIED ASTM D-1946 11030127File Name: Dil. Factor:1.00 Date of Collection: NA Date of Analysis: 3/1/24 03:46 PM Limits%RecoveryCompound Method 97 85-115Methane Container Type: NA - Not Applicable Page 16 of 16 1 of 5 R022101 2 of 5 R022101 3 of 5 R022101 4 of 5 R022101 5 of 5 R022101 Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W Pre-Regulatory Landfill Unit APPENDIX F RISK CALCULATORS – LANDFILL GAS Version Date: Basis: Site Name: Site Address: DEQ Section: Site ID: Exposure Unit ID: Submittal Date: Reviewed By: SGP-6, SGP-8, SGP-10, SGP-11, LFGP-1, LFGP-2, and DUP-B North Carolina Department of Environmental Quality Risk Calculator Elon College Landfill Elon, Alamance County, North Carolina Pre-Regulatory Landfill Unit NONCD0000730 February 2024 November 2023 EPA RSL Table 3/25/2024 Prepared By:ATC Associates of North Carolina, P.C. 2725 E. Millbrook Road, Raleigh, North Carolina 27604 Tim Grant, P.G. North Carolina DEQ Risk Calculator Table of Contents Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-6, SGP-8, SGP-10, SGP-11, LFGP-1, LFGP-2, and DUP-B Form No. Input Form 1A Complete Exposure Pathways Input Form 1B Exposure Factors and Target Risks Input Form 1C Contaminant Migration Parameters Input Form 1D Sample Statistics Input Form 2A Soil Exposure Point Concentration Table Input Form 2B Groundwater Exposure Point Concentration Table Input Form 2C Surface Water Exposure Point Concentration Table Input Form 2D Soil Gas Exposure Point Concentration Table Input Form 2E Indoor Air Exposure Point Concentration Table Output Form 1A Risk for Individual Pathways Output Form 1B Sitewide Risk Output Form 2A Resident Soil Output Form 2B Resident Groundwater Use Output Form 2C Non-Residential Worker Soil Output Form 2D Non-Residential Worker Groundwater Use Output Form 2E Construction Worker Soil Output Form 2F Recreator/Trespasser Soil Output Form 2G Recreator/Trespasser Surface Water Output Form 3A Resident Groundwater to Indoor Air Output Form 3B Resident Soil Gas to Indoor Air Output Form 3C Resident Indoor Air Output Form 3D Non-Residential Worker Groundwater to Indoor Air Output Form 3E Non-Residential Worker Soil Gas to Indoor Air Output Form 3F Non-Residential Worker Indoor Air Output Form 4A Soil to Groundwater - Forward Mode Output Form 4B Groundwater to Groundwater - Forward Mode Output Form 4C Soil to Surface Water - Forward Mode Output Form 4D Groundwater to Surface Water - Forward Mode Output Form 4E Soil to Groundwater - Backward Mode Output Form 4F Groundwater to Groundwater - Backward Mode Output Form 4G Soil to Surface Water - Backward Mode Output Form 4H Groundwater to Surface Water - Backward Mode Output Section 4 - Contaminant Migration Worksheets Output Section 3 - Vapor Intrusion Calculators TOC Description DATA INPUT SHEETS Check box if included Input Section 1 - Exposure Pathways & Parameters Input Section 2 - Exposure Point Concentrations DATA OUTPUT SHEETS Output Section 1 - Summary Output for All Calculators Output Section 2 - Direct Contact Soil and Groundwater Calculators North Carolina DEQ Risk Calculator Complete Exposure Pathways Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-6, SGP-8, SGP-10, SGP-11, LFGP-1, LFGP-2, and DUP-B Note: Risk output will only be calculated for complete exposure pathways. Receptor Pathway Check box if pathway complete Soil Groundwater Use Soil Groundwater Use Construction Worker Soil Soil Surface Water Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Groundwater to Indoor Air Soil Gas to Indoor Air Indoor Air Source Soil Source Groundwater Source Soil Source Groundwater Resident Non-Residential Worker CONTAMINANT MIGRATION PATHWAYS Groundwater Surface Water Input Form 1A VAPOR INTRUSION PATHWAYS DIRECT CONTACT SOIL AND WATER PATHWAYS Resident Non-Residential Worker Recreator/Trespasser North Carolina DEQ Risk Calculator Exposure Factors and Target Risks Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Parameter Site Specific Value Justification Target Cancer Risk (individual) 1.0E-06 Target Cancer Risk (cumulative) 1.0E-04 Target Hazard Index (individual) 2.0E-01 Target Hazard Index (cumulative) 1.0E+00 Lifetime (LT) (years)70 Body Weight (BW) (kg) 15 Exposure Duration (ED) (yr) 6 Exposure Frequency (EF) (d/yr) 350 Exposure Time (ET) (hr/d) 24 Skin Surface Area - Soil Exposure (SAs) (cm2)2373 Soil Adherence Factor (AF) (mg/cm2)0.2 Soil Ingestion Rate (IRS) (mg/day)200 Skin Surface Area - Water Exposure (SAw) (cm2)6365 Water Ingestion Rate (IRW) (L/d) 0.78 Water Exposure Time (ETevent) (hr/event)0.54 Water Event Frequency (EV) (events/day) 1 Lifetime (LT) (years)70 Body Weight (BW) (kg) 80 Exposure Duration (ED) (yr) 20 Exposure Frequency (EF) (d/yr) 350 Exposure Time (ET) (hr/d) 24 Skin Surface Area - Soil Exposure (SAs) (cm2)6032 Soil Adherence Factor (AF) (mg/cm2)0.07 Soil Ingestion Rate (IRS) (mg/day)100 Skin Surface Area - Water Exposure (SAw) (cm2)19652 Water Ingestion Rate (IRW) (L/d) 2.5 Water Exposure Time (ETevent) (hr/event)0.71 Water Event Frequency (EV) (events/day)1 Lifetime (LT) (years)70 Body Weight (BW) (kg) 80 Exposure Duration (ED) (yr) 25 Exposure Frequency (EF) (d/yr) 250 Exposure Time (ET) (hr/d) 8 Skin Surface Area - Soil Exposure (SAs) (cm2)3527 Soil Adherence Factor (AF) (mg/cm2)0.12 Soil Ingestion Rate (IR) (mg/day)100 Skin Surface Area - Water Exposure (SAw) (cm2)19652 Water Ingestion Rate (IRW) (L/d) 0.83 Water Exposure Time (ETevent) (hr/event)0.67 Water Event Frequency (EV) (events/day)1 Lifetime (LT) (years)70 Body Weight (BW) (kg) 80 Working Weeks (EW) (wk/yr) 50 Exposure Duration (ED) (yr) 1 Exposure Frequency (EF) (d/yr) 250 Exposure Time (ET) (hr/d) 8 Skin Surface Area - Soil Exposure (SAs) (cm2)3527 Soil Adherence Factor (AF) (mg/cm2)0.3 Soil Ingestion Rate (IR) (mg/day)330 Non-Residential Worker Construction Worker 70 80 25 250 8 3527 0.12 100 19652 0.83 0.67 Input Form 1B Exposure Unit ID: SGP-6, SGP-8, SGP-10, SGP-11, LFGP-1, LFGP-2, and DUP-B Residential Child General Residential Adult Default Value 1.0E-06 1.0E-04 2.0E-01 1.0E+00 70 15 6 350 24 2373 0.2 200 6365 0.78 0.54 1 70 80 20 350 24 6032 0.07 100 19652 2.5 0.71 1 1 70 80 330 1 250 8 3527 0.3 50 North Carolina DEQ Risk Calculator Exposure Factors and Target Risks Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Parameter Site Specific Value Justification Input Form 1B Exposure Unit ID: SGP-6, SGP-8, SGP-10, SGP-11, LFGP-1, LFGP-2, and DUP-B Default Value Recreator Trespasser Lifetime (LT) (years)70 NA 70 Averaging Time (AT) (days/yr)365 NA 365 Body Weight (BW) (kg)15 NA 15 Exposure Duration 0-2 (ED) (yr)2 NA 2 Exposure Duration 2-6 (ED) (yr)4 NA 4 Exposure Frequency (EF) (d/yr)195 NA 195 Exposure Time (ET) (hr/d)2 NA 2 Skin Surface Area - Soil Exposure (SAs) (cm2)2373 NA 2373 Soil Adherence Factor (AF) (mg/cm2)0.2 NA 0.2 Soil Ingestion Rate (IRS) (mg/day) 200 NA 200 Skin Surface Area - Water Exposure (SAw) (cm2)6365 NA 6365 Water Ingestion Rate (IRW) (L/hr)0.12 NA 0.12 Water Exposure Time (ETevent) (hr/event)2 NA 2 Water Event Frequency (EV) (events/day) 1 NA 1 Recreator Trespasser Lifetime (LT) (years)70 70 70 Body Weight (BW) (kg) 80 45 80 Exposure Duration 6-16 (ED) (yr) 10 10 10 Exposure Duration 16-26 (ED) (yr) 10 0 10 Exposure Frequency (EF) (d/yr) 195 90 195 Exposure Time (ET) (hr/d)2 2 2 Skin Surface Area - Soil Exposure (SAs) (cm2)6032 6032 6032 Soil Adherence Factor (AF) (mg/cm2)0.07 0.2 0.07 Soil Ingestion Rate (IRS) (mg/day)100 200 100 Skin Surface Area - Water Exposure (SAw) (cm2)19652 19652 19652 Water Ingestion Rate (IRW) (L/hr)0.11 0.11 0.11 Water Exposure Time (ETevent) (hr/event)2 2 2 Water Event Frequency (EV) (events/day) 1 1 1 User Defined Child User Defined Adult North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: LFGP-1 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 8.5 110-82-7 Cyclohexane ug/m3 22 75-71-8 Dichlorodifluoromethane ug/m3 16 127-18-4 Tetrachloroethylene ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Concentrations collected from sample LFGP-1. Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: LFGP-1 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 110-82-7 Cyclohexane 8.5 0.255 -1.3E+03 4.1E-05 75-71-8 Dichlorodifluoromethane 22 0.66 -2.1E+01 6.3E-03 127-18-4 Tetrachloroethylene 16 0.48 1.1E+01 8.3E+00 4.4E-08 1.2E-02 Cumulative:4.4E-08 1.8E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: LFGP-1 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 110-82-7 Cyclohexane 8.5 0.085 -5.3E+03 3.2E-06 75-71-8 Dichlorodifluoromethane 22 0.22 -8.8E+01 5.0E-04 127-18-4 Tetrachloroethylene 16 0.16 4.7E+01 3.5E+01 3.4E-09 9.1E-04 Cumulative:3.4E-09 1.4E-03 All concentrations are in ug/m3 Output Form 3E Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: LFGP-2 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 5.7 71-43-2 Benzene ug/m3 21 98-82-8 Cumene ug/m3 40 110-82-7 Cyclohexane ug/m3 120 75-71-8 Dichlorodifluoromethane ug/m3 13 110-54-3 Hexane, N-ug/m3 6.5 108-67-8 Trimethylbenzene, 1,3,5-ug/m3 10 1330-20-7 Xylenes ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Concentrations collected from sample LFGP-2. Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: LFGP-2 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 71-43-2 Benzene 5.7 0.171 3.6E-01 6.3E+00 4.8E-07 5.5E-03 98-82-8 Cumene 21 0.63 -8.3E+01 1.5E-03 110-82-7 Cyclohexane 40 1.2 -1.3E+03 1.9E-04 75-71-8 Dichlorodifluoromethane 120 3.6 -2.1E+01 3.5E-02 110-54-3 Hexane, N-13 0.39 -1.5E+02 5.3E-04 108-67-8 Trimethylbenzene, 1,3,5-6.5 0.195 -1.3E+01 3.1E-03 1330-20-7 Xylenes 10 0.3 -2.1E+01 2.9E-03 Cumulative:4.8E-07 4.8E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: LFGP-2 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 71-43-2 Benzene 5.7 0.057 1.6E+00 2.6E+01 3.6E-08 4.3E-04 98-82-8 Cumene 21 0.21 -3.5E+02 1.2E-04 110-82-7 Cyclohexane 40 0.4 -5.3E+03 1.5E-05 75-71-8 Dichlorodifluoromethane 120 1.2 -8.8E+01 2.7E-03 110-54-3 Hexane, N-13 0.13 -6.1E+02 4.2E-05 108-67-8 Trimethylbenzene, 1,3,5-6.5 0.065 -5.3E+01 2.5E-04 1330-20-7 Xylenes 10 0.1 -8.8E+01 2.3E-04 Cumulative:3.6E-08 3.8E-03 All concentrations are in ug/m3 Output Form 3E Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: DUP-B (LFGP-2) Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 28 67-64-1 Acetone ug/m3 9.2 71-43-2 Benzene ug/m3 23 98-82-8 Cumene ug/m3 62 110-82-7 Cyclohexane ug/m3 170 75-71-8 Dichlorodifluoromethane ug/m3 5.3 142-82-5 Heptane, N-ug/m3 20 110-54-3 Hexane, N-ug/m3 6.9 108-67-8 Trimethylbenzene, 1,3,5-ug/m3 16.7 1330-20-7 Xylenes ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Concentrations collected from sample DUP-B (LFGP-2). Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: DUP-B (LFGP-2) CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 28 0.84 -- 71-43-2 Benzene 9.2 0.276 3.6E-01 6.3E+00 7.7E-07 8.8E-03 98-82-8 Cumene 23 0.69 -8.3E+01 1.7E-03 110-82-7 Cyclohexane 62 1.86 -1.3E+03 3.0E-04 75-71-8 Dichlorodifluoromethane 170 5.1 -2.1E+01 4.9E-02 142-82-5 Heptane, N-5.3 0.159 -8.3E+01 3.8E-04 110-54-3 Hexane, N-20 0.6 -1.5E+02 8.2E-04 108-67-8 Trimethylbenzene, 1,3,5-6.9 0.207 -1.3E+01 3.3E-03 1330-20-7 Xylenes 16.7 0.501 -2.1E+01 4.8E-03 Cumulative:7.7E-07 6.9E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: DUP-B (LFGP-2) CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 28 0.28 -- 71-43-2 Benzene 9.2 0.092 1.6E+00 2.6E+01 5.9E-08 7.0E-04 98-82-8 Cumene 23 0.23 -3.5E+02 1.3E-04 110-82-7 Cyclohexane 62 0.62 -5.3E+03 2.4E-05 75-71-8 Dichlorodifluoromethane 170 1.7 -8.8E+01 3.9E-03 142-82-5 Heptane, N-5.3 0.053 -3.5E+02 3.0E-05 110-54-3 Hexane, N-20 0.2 -6.1E+02 6.5E-05 108-67-8 Trimethylbenzene, 1,3,5-6.9 0.069 -5.3E+01 2.6E-04 1330-20-7 Xylenes 16.7 0.167 -8.8E+01 3.8E-04 Cumulative:5.9E-08 5.5E-03 All concentrations are in ug/m3 Output Form 3E Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-6 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 17 127-18-4 Tetrachloroethylene ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Concentrations collected from sample SGP-6. Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-6 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 127-18-4 Tetrachloroethylene 17 0.51 1.1E+01 8.3E+00 4.7E-08 1.2E-02 Cumulative:4.7E-08 1.2E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-6 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 127-18-4 Tetrachloroethylene 17 0.17 4.7E+01 3.5E+01 3.6E-09 9.7E-04 Cumulative:3.6E-09 9.7E-04 All concentrations are in ug/m3 Output Form 3E Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-8 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 41 67-64-1 Acetone ug/m3 18 75-15-0 Carbon Disulfide ug/m3 8 67-66-3 Chloroform ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Concentrations collected from sample SGP-8. Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-8 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 41 1.23 -- 75-15-0 Carbon Disulfide 18 0.54 -1.5E+02 7.4E-04 67-66-3 Chloroform 8 0.24 1.2E-01 2.0E+01 2.0E-06 2.3E-03 Cumulative:2.0E-06 3.1E-03 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-8 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 67-64-1 Acetone 41 0.41 -- 75-15-0 Carbon Disulfide 18 0.18 -6.1E+02 5.9E-05 67-66-3 Chloroform 8 0.08 5.3E-01 8.6E+01 1.5E-07 1.9E-04 Cumulative:1.5E-07 2.5E-04 All concentrations are in ug/m3 Output Form 3E Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-10 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 30 75-15-0 Carbon Disulfide ug/m3 8.6 110-82-7 Cyclohexane ug/m3 18 127-18-4 Tetrachloroethylene ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Concentrations collected from sample SGP-10. Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-10 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 75-15-0 Carbon Disulfide 30 0.9 -1.5E+02 1.2E-03 110-82-7 Cyclohexane 8.6 0.258 -1.3E+03 4.1E-05 127-18-4 Tetrachloroethylene 18 0.54 1.1E+01 8.3E+00 5.0E-08 1.3E-02 Cumulative:5.0E-08 1.4E-02 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-10 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 75-15-0 Carbon Disulfide 30 0.3 -6.1E+02 9.8E-05 110-82-7 Cyclohexane 8.6 0.086 -5.3E+03 3.3E-06 127-18-4 Tetrachloroethylene 18 0.18 4.7E+01 3.5E+01 3.8E-09 1.0E-03 Cumulative:3.8E-09 1.1E-03 All concentrations are in ug/m3 Output Form 3E Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Exposure Point Concentrations Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-11 Description of Exposure Point Concentration Selection: Exposure Point Concentration (ug/m3) Notes:CAS Number Chemical Minimum Concentration (Qualifier) Maximum Concentration (Qualifier) Units Location of Maximum Concentration Detection Frequency Range of Detection Limits Concentration Used for Screening Background Value Screening Toxicity Value (Screening Level) (n/c) Potential ARAR/TBC Value Potential ARAR/TBC Source COPC Flag (Y/N) Rationale for Selection or Deletion 27 75-15-0 Carbon Disulfide ug/m3 5 110-82-7 Cyclohexane ug/m3 12 127-18-4 Tetrachloroethylene ug/m3 Input Form 2D Soil Gas Exposure Point Concentration Table Concentrations collected from sample SGP-11. Note: Chemicals highlighted in orange are non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. If the chemical list is changed from a prior calculator run, remember to select "See All Chemicals" on the data output sheet or newly added chemicals will not be included in risk calculations North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Resident Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-11 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 75-15-0 Carbon Disulfide 27 0.81 -1.5E+02 1.1E-03 110-82-7 Cyclohexane 5 0.15 -1.3E+03 2.4E-05 127-18-4 Tetrachloroethylene 12 0.36 1.1E+01 8.3E+00 3.3E-08 8.6E-03 Cumulative:3.3E-08 9.8E-03 All concentrations are in ug/m3 Output Form 3B Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator DEQ Risk Calculator - Vapor Intrusion - Non-Residential Worker Soil Gas to Indoor Air Version Date: February 2024 Basis: November 2023 EPA RSL Table Site ID: NONCD0000730 Exposure Unit ID: SGP-11 CAS #Chemical Name: Soil Gas Concentration (ug/m3) Calculated Indoor Air Concentration (ug/m3) Target Indoor Air Conc. for Carcinogens @ TCR = 1E-06 Target Indoor Air Conc. for Non- Carcinogens @ THQ = 0.2 Calculated Carcinogenic Risk Calculated Non- Carcinogenic Hazard Quotient 75-15-0 Carbon Disulfide 27 0.27 -6.1E+02 8.8E-05 110-82-7 Cyclohexane 5 0.05 -5.3E+03 1.9E-06 127-18-4 Tetrachloroethylene 12 0.12 4.7E+01 3.5E+01 2.5E-09 6.8E-04 Cumulative:2.5E-09 7.7E-04 All concentrations are in ug/m3 Output Form 3E Carcinogenic risk and hazard quotient cells highlighted in orange are associated with non-volatile chemicals. Since these chemicals do not pose a vapor intrusion risk, no risk values are calculated for these chemicals. North Carolina DEQ Risk Calculator Elon College LDFL Task Order 730RI-4 ATC Project No. PRLU0730W Pre-Regulatory Landfill Unit APPENDIX G CERTIFICATION