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HomeMy WebLinkAbout7601_RandolphCountyMSWLF_May2023GWMR_FID1894107_20240826 REPORT FIRST SEMI-ANNUAL 2023 WATER QUALITY MONITORING EVENT Closed Randolph County Landfill, Permit No. 76-01 Submitted to: Mr. Ervin Lane North Carolina Department of Environmental Quality Division of Waste Management - Solid Waste Section 1646 Mail Service Center Raleigh, North Carolina 27699-1646 31404568.018 October 5, 2023 First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page ii Executive Summary On behalf of Waste Management of Carolinas, Inc. (Waste Management) and Randolph County, WSP USA Inc. (WSP), is pleased to submit the enclosed Water Quality Monitoring Report, which documents the results of the May 22 – 23, 2023, groundwater and surface water sampling event at the closed Randolph County Landfill, North Carolina (NC) Solid Waste Permit (SWP) No. 76-01. One inorganic constituent, cobalt, was detected at a quantified concentration above the practical quantitation limit (PQL) and NC 2L Groundwater Standard (NC 2L Standard) in samples collected from downgradient monitoring MW-7 during this monitoring event. Cobalt was also detected at an estimated concentration below the practical quantitation limit (PQL), but above the NC 2L Standard in the samples collected from downgradient monitoring well MW-6. The cobalt concentrations in samples collected from MW-6 and MW-7 are generally consistent with historical data. With regards to the estimated cobalt concentration detected in samples collected from MW-6, per 15A NCAC 02L .0202 (b)(1), “where the standard (i.e., the NC 2L Standard) for a substance is less than the PQL, the detection of that substance at or above the PQL constitutes a violation of the standard.” Historically, cobalt has been intermittently detected in samples collected from the upgradient monitoring well, MW-5, at similar or higher concentrations suggesting that cobalt is naturally occurring or could be from an off-site source. No other inorganic constituents were detected in samples collected from the groundwater compliance network at concentrations above applicable groundwater quality standards during this sampling event. Two NC Appendix I listed organic constituents, 1,1-dichloroethane and tetrachloroethene, were detected at quantified concentration above their respective PQLs and NC 2L Standards in samples collected from downgradient compliance monitoring well MW-10S during the May 2023 sampling event, as they have been historically. Vinyl chloride was detected at an estimated concentration below PQL but above the NC 2L Standard in samples collected from MW-10S during the May 2023 sampling event, as it has been historically. The constituent 1,4-dioxane was detected at quantified concentration above the NC 2L Standard in the samples collected from the downgradient monitoring wells MW-6 and MW-10S. The constituent, 1,4 dioxane, is currently sampled in accordance with the May 29, 2018 NC DEQ memorandum and is not currently required by permit or regulation. Future trends for the detection of 1,4-dioxane will be monitored. No other organic compounds were detected at concentrations above the applicable groundwater standards during the May 2023 sampling event. One inorganic constituent, cobalt, was detected at an estimated concentration above the chronic NC In-Stream Target Values for Surface Water in samples collected from the upstream surface water monitoring point, SW-1, during the May 2023 sampling event. Cobalt was not detected in either downstream surface water sample during this sampling event. No other inorganic or organic compounds were detected in samples collected from surface water monitoring points at concentrations above the applicable surface water standards during the May 2023 event. According to the current data and as indicated by the BIOCHLOR model described in detail in this report, it is likely that the plume size has stabilized. Because of the low concentration of parent compounds and multiple degradation pathways for cis-1,2-dichloroethene (e.g., aerobic and anaerobic), there are limited concentrations of vinyl chloride and ethene in each of the plumes evaluated. The concentration trends show that cis-1,2- dichloroethene is not accumulating and that degradation of the chlorinated compounds is continuing. First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page iii Based on the May 2023 analytical results, the uppermost aquifer beneath this facility should continue to be monitored in accordance with the requirements of the Assessment Monitoring Program as outlined in Title 15A of North Carolina Administrative Code (NCAC) Subchapter 13B Rule .1634. The County will continue to sample according to the reduced monitored natural attenuation (MNA) parameter list approved by NC Department of Environmental Quality (DEQ) on October 18, 2017. The next sampling event is tentatively scheduled for October 2023. First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page iv S I G N A T U R E S PREPARED BY Darren Cox Associate Consultant, Environmental Scientist REVIEWED BY Benjamin S. Draper, PG, PMP Lead Consultant, Geologist This report was prepared by WSP USA Inc. for the account of Waste Management and Randolph County in accordance with the professional services agreement. The disclosure of any information contained in this report is the sole responsibility of the intended recipient. The material in it reflects WSP’s best judgement in light of the information available to it at the time of preparation. The original of the technology-based document sent herewith has been authenticated and will be retained by WSP for a minimum of ten years. Since the file transmitted is now out of WSP’s control and its integrity can no longer be ensured, no guarantee may be given with regards to any modifications made to this document. First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page v Distribution List Kyle Mertens, Environmental Manager, South Atlantic, Waste Management, 321-403-2544. kmertens@wm.com Mike McFeeley, District Manager, Waste Management, 3597 Old Cedar Falls Road, Randleman, NC, 27317. mmcfeel1@wm.com Seth Ramaley, PG, Director, Groundwater Protection Program, Waste Management, 1850 Parkway Place, Suite 600, Atlanta, GA, 30067. 770-590-2933. sramaley@wm.com Paxton Arthurs, PE, Public Works Director, Randolph County Office Building, 725 McDowell Road, Asheboro, North Carolina 27205. 336-318-6605. pgarthurs@co.randolph.nc.us First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page 1 TABLE OF CONTENTS 1.0 INTRODUCTION……………………………………………………………………………….….3 1.1 Site Description and Background………………………………….…………………………………………..3 1.2 Compliance Monitoring History……………………………………………………………………………….. 3 1.3 Hydrogeologic Setting…………………………………………………..………………………………………. 4 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION…………………………5 2.1 Visual Inspection Program……………………………………………………………………………………….5 2.2 Well Network and Groundwater Elevation Measurements…………………………………………………5 2.3 October 2022 Groundwater and Surface Water Monitoring Event………………………………………..6 2.4 Laboratory Analysis Program………………………………………………………………………………… 6 2.4.1 Compliance Monitoring………………………………………………………………………………………….. 7 2.4.2 Corrective Action Monitoring…………………………………………………………………………………… 7 3.0 LABORATORY AND FIELD QA/QC…………………………………………………………7 4.0 DATA EVALUATION…………………………………………………………………………...7 4.1 North Carolina Groundwater and Surface Water Standard Comparisons……………………………….7 5.0 CORRECTIVE ACTION PERFORMANCE MONITORING RESULTS AND MONITORED NATURAL ATTENUATION EVALUATION……..…………………………………………………………………………….. 8 5.1 Corrective Action Monitoring Performance Results….………………………………………………………8 5.2 Monitored Natural Attenuation Evaluation…………………...……………………………………………….. 8 6.0 CONCLUSIONS…………………………………………………………………………………….10 7.0 REFERENCES……………………………………………………………………………………..11 First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page 2 TABLES Table 1 Summary of Historical Static Water Level Data Table 2 Summary of Estimated Horizontal Flow Velocities Table 3 Summary of Well Construction Information Table 4 Summary of Historical Groundwater Monitoring Results Table 5 Summary of Field Parameters Table 6 Summary of Historical Surface Water Monitoring Results Table 7 Summary of Surface Water Field Parameters Table 8 Summary of Geochemical Parameters Table 9 Summary of Constituents of Concern FIGURES Figure 1 Groundwater Surface Contour Map, May 23, 2023 APPENDICES Appendix A Groundwater and Surface Water Sampling Logs. Appendix B May 2023 Groundwater Certificates-of-Analysis, Chain-of-Custody Forms, Sampling Logs and Laboratory Data Reviews. Appendix C EPA Natural Attenuation Screening Protocol Forms and BIOCHLOR Monitored Natural Attenuation Analysis. First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page 3 1.0 INTRODUCTION On behalf of Waste Management of Carolinas, Inc. (Waste Management) and Randolph County, North Carolina (NC), WSP USA Inc. (WSP), is submitting this Water Quality Monitoring Report in accordance with Title 15A of the North Carolina Administrative Code (NCAC) Subchapter 13B .1634. This report summarizes the results of the May 22 – 23, 2023 sampling event at the closed Randolph County Landfill located in Randolph County, NC. The Randolph County Landfill is a closed municipal solid waste (MSW) landfill and is maintained by Waste Management under NC Solid Waste Permit No. 76-01 issued by the NC Department of Environmental Quality (DEQ). 1.1 Site Description and Background The location of the closed Randolph County Landfill is shown on the inlay on Figure 1. The facility is located approximately 3 miles northeast of the city of Asheboro, near the town of Central Falls in Randolph County, NC. Randolph County operated a sanitary landfill from 1973 to 1985. A second sanitary landfill for MSW, construction and demolition (C&D) debris, and land clearing and inert debris (LCID) was operated from 1985 to December 31, 1997. The facility is located on approximately 600 acres, approximately half of which contains waste or is associated with activities for the convenience center and the County’s solid waste transfer station. The existing transfer station was built before final landfill closure in 1997 and operated until the opening of the Great Oak Landfill near Cedar Falls in 2017. Because it operated past October 9, 1993, the Randolph County landfill is subject to Title 15A NCAC 13B .1630 of the NC Solid Waste Management Regulations (SWMR). As shown on Figure 1, the landfill is accessible by County Land Road to the southwest. The landfill is bound to the north by the Deep River and bordered to the west, south, and east by residential and undeveloped, wooded properties. Topographic relief at the landfill ranges from approximately 580 to 725 feet above mean sea level (amsl). Surface drainage from the facility is toward an unnamed perennial stream to the west and a natural valley to the east. Runoff from both features drains into the Deep River located northeast of the landfill (H&S, 1994). 1.2 Compliance Monitoring History Groundwater monitoring wells for the second sanitary landfill have been sampled since 1987. The facility has been in the assessment monitoring program since 1996, due to detections of volatile organic compounds (VOCs) in groundwater samples at concentrations above applicable standards. The current Water Quality Monitoring Plan (WQMP) was included in the facility’s Transition Plan, dated October 8, 1994, and was subsequently approved by NC DEQ, formerly the NC Department of the Environment and Natural Resources (DENR), in 1995. In accordance with the WQMP, the current water quality monitoring system consists of six groundwater monitoring wells (MW-5, MW-6, MW-7, MW-8, MW-9, and MW-10S) and four surface water monitoring points [SW-1 and SW-3 (upstream) and SW-2 and SW-4 (downstream)]. A Nature and Extent Study (NES) was submitted to the NC DEQ on April 12, 2013, in response to exceedances of VOCs in groundwater samples collected from the monitoring network. The NES was approved by NC DEQ on June 8, 2013. An Assessment of Corrective Measures (ACM) was submitted to NC DEQ on October 3, 2013 and was approved on December 2, 2013. A Corrective Action Plan (CAP) was submitted to NC DEQ on July 31, 2015 and approved on September 10, 2015. As specified in the CAP, monitored natural attenuation (MNA) was implemented as the corrective action for the facility. As part of the Corrective Action Performance Monitoring Plan (CAPMP), which was approved as part of the CAP, downgradient monitoring well MW-1 was replaced with monitoring well MW-10S. Monitoring well MW-1 remains for the collection of water level data only. Per the CAPMP, monitoring wells MW-2, MW-3, MW-10D, and MW-11S are sampled semi-annually as MNA corrective action monitoring wells. A Corrective Action Evaluation Report First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page 4 (CAER) was submitted to NC DEQ on May 4, 2021. The CAER requested that 1,4-dichlorobenzene, 1,2-dichloroethane, cis-1,2-dichloroethene, methylene chloride, and 4 Methyl-2-pentanone be removed as constituents-of-concern (COCs) for the facility. The CAER was approved by NC DEQ on May 10, 2021. Sampling and analysis of 1,4-dioxane is currently performed in accordance with a May 2018 Memorandum from NC DEQ. Aside from the May 2018 Memorandum, 1,4- dioxane is not currently included in the NC Solid Waste Management Rules, nor in the facility’s permit. 1.3 Hydrogeologic Setting Geologically, the facility is located within the Carolina Slate Belt of the Piedmont Physiographic Province of NC. The Carolina Slate Belt is composed of Late Proterozoic to Cambrian aged meta-sedimentary and meta-volcanic rocks that locally have been intruded by diabase dikes and felsic intrusive suites (NCGS, 1985). The facility is underlain primarily by felsic meta-volcanic tuffs with massive fabrics to steeply dipping foliations (GSA, 2008). STS Consultants Ltd. conducted a geologic and hydrogeologic investigation as part of the Phase II Landfill Expansion in late 1984 and 1985 (H&S, 1994). The topography of the area is characterized by rolling rounded hills and flat valleys with sharp draws containing streams and ponds. The surficial geology on-site consists of saprolite (i.e., residual soils weathered from bedrock). The saprolite generally consists of clayey silts and silty clays with some sandy silts and silty sands (H&S, 1994). The uppermost groundwater beneath the facility is present in a shallow unconfined aquifer comprised of partially weathered fractured meta-volcanic rock. Due to the rolling topography, groundwater occurs at depths ranging from approximately 4 to 66 feet below grade. Depth-to-water measurements obtained during the May 2023 monitoring event are summarized in Table 1 and were used to prepare a groundwater surface contour map presented on Figure 1. As shown on Figure 1, the groundwater flow in the uppermost aquifer beneath the site is generally to the north or northeast toward the Deep River which is located along the northern property boundary. The groundwater contour map and interpreted flow directions are consistent with those previously submitted for this facility. Based on the May 2023 groundwater surface contour map, the average hydraulic gradient in the shallow aquifer underlying the site, as measured along the conceptual flow path shown on Figure 1, was calculated to be approximately 0.066 foot/foot (Table 2). Based on a local hydrogeologic investigation, a hydraulic conductivity of 2.75E-04 centimeter/second was used in linear groundwater velocity calculations (GSA, 2008). An estimated effective porosity of 0.15 was used for the shallow aquifer to represent a range from saprolite to fractured rock (H&S, 1997). Using the above values, the estimated rate of groundwater flow for the uppermost aquifer beneath the facility was calculated using the following modified Darcy equation: 𝑉= 𝐾 𝑥 𝑖 𝑛 where Vgw = average linear velocity (feet/year), K = hydraulic conductivity (feet/year), i = horizontal hydraulic gradient, and ne = effective porosity. The average estimated linear groundwater flow velocity under the waste management unit is approximately 124 feet/year, which is generally consistent with previous estimates (Table 2). The range of groundwater flow rates is expected to vary depending on the hydrogeologic unit in which it occurs. However, the linear velocity equation above makes the simplified assumption of a homogeneous and isotropic aquifer. Therefore, this equation represents a likely average value for the uppermost aquifer and does not account for heterogeneous and/or anisotropic conditions that may be present in the uppermost aquifer at the facility. The saprolite may have areas that exhibit relict foliation, and these structures can result in locally anisotropic groundwater flow directions. First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page 5 2.0 FIELD PROGRAM, MONITORING RESULTS, AND DISCUSSION Field activities conducted for the May 2023 sampling event are discussed in the following sections. 2.1 Visual Inspection Program To detect a potential release at the earliest possible time, a visual inspection program is used by sampling crews at the closed Randolph County Landfill. This program includes observations of physical indicators such as potential water table mounding beneath the waste management unit, physical examination of any stresses in biological communities, visible signs of leachate migration (i.e., leachate seeps), unexplained changes in soil characteristics, and any other changes to the environment due to the waste management unit. During this compliance monitoring event, no physical indicators of a potential release were observed in the vicinity of the waste management area. 2.2 Well Network and Groundwater Elevation Measurements The current groundwater monitoring network at the closed Randolph County Landfill consists of six monitoring wells (MW- 5, MW-6, MW-7, MW-8, MW-9, and MW-10S). Additionally, four monitoring wells (MW-2, MW-3, MW-10D, and MW-11S) are sampled semi-annually for as performance monitoring wells associated with the MNA corrective action remedy. Available monitoring well construction information is summarized on Table 3, and the well locations are shown on Figure 1. The groundwater monitoring network was constructed to target the preferential flow path for groundwater underlying waste management units (i.e., partially weathered fractured rock that comprises the unconfined uppermost aquifer). Two on-site surface water points (upstream SW-1 and downstream SW-2) and two off-site surface water points (upstream SW- 3 and downstream SW-4) are also monitored to assess water quality at the site in conjunction with groundwater monitoring network. Monitoring well MW-5 is the facility’s background well and is located hydraulically upgradient of the waste management units. Monitoring wells MW-6, MW-7, MW-8, MW-9, and MW-10S are located downgradient of the waste management units and represent the facility’s downgradient compliance network. Monitoring wells MW-7, MW-8, MW-9, and MW-10S are screened in the shallow unconfined aquifer while monitoring wells MW-5 and MW-6 are screened in fractured bedrock. Additionally, water levels are measured during each sampling event at nine observation wells; MW-1, MW-2, MW-3, MW-4, MW-10D, MW-11S, MW-A1, MW-A2, and MW-A3. These measurements supplement groundwater elevation data obtained from the compliance monitoring wells and are used in the creation of the groundwater contour map included as Figure 1. Depth-to-water measurements were recorded to the nearest 0.01 foot prior to initiating groundwater purging and sampling activities. A summary of the current and historical water level elevations is presented in Table 1. As presented, the data indicate that the hydraulic head level in the uppermost aquifer beneath the facility is relatively consistent with temporal variation, with the long-term average ranging from approximately 2 to 20 feet (plus or minus). As expected, the range in fluctuation appears to be greatest in upgradient well MW-5 which is located in a groundwater recharge area. The range of fluctuation in downgradient compliance wells MW-6, MW-7, MW-8, MW-9, and MW-10S, located near groundwater discharge areas, is less, presumably due to the stabilizing effect of the hydraulic discharge boundary. 2.3 May 2023 Groundwater and Surface Water Monitoring Event Personnel from WSP visited the facility on May 22 - 23, 2023 to purge and sample groundwater monitoring wells MW-2, MW-3, MW-5, MW-6, MW-7, MW-8, MW-9, MW-10S, MW-10D, and MW-11S, and to sample surface water monitoring points SW-1, SW-2, SW-3, and SW-4. Monitoring wells were purged with dedicated bladder pumps using low-flow First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page 6 micropurge procedures in accordance with applicable United States Environmental Protection Agency (USEPA) and NC DEQ sampling protocols. Field measurements of temperature, pH, specific conductivity, dissolved oxygen (DO), oxidation-reduction potential (ORP), and turbidity were recorded periodically (i.e., approximately every 3 to 5 minutes based on the purge rate and flow cell volume) with field-calibrated instruments during the micro-purge process. In general, the purge rate for each well was matched to the yield of the monitoring well, as determined by continuously monitoring the depth to the water, up to a maximum purge rate of 500 milliliters per minute. Each monitoring well was purged until stabilization was indicated by the water quality parameters. Prior to sampling, laboratory-supplied sample containers were prepared. Each sample container was labeled with the sample identification number, sampling personnel, date and time of sample collection, project name and number, and requested chemical analysis. The groundwater samples were collected directly from the inline tubing connected to the dedicated bladder pumps. Samples were placed into pre-preserved sample containers after purging was considered complete based on the stabilization of field parameters. Surface water samples were collected directly from the stream flow by lowering the sample containers into the stream with the opening facing away from the current flow, taking care to prevent the overflow of the sample containers and to minimize sample-induced turbidity. Measurements of temperature, pH, specific conductivity, DO, ORP, and turbidity were recorded during the collection of the surface water samples. After collection, the groundwater and surface water samples were placed in a cooler on ice, under chain-of-custody control. Copies of the sampling logs are presented in Appendix A. Included in each log is a description of the sampling equipment, sampling location, sampling method, field observations, and field measurements. 2.4 Laboratory Analysis Program For the May 2023 compliance monitoring, groundwater and surface water samples were shipped via courier on May 22 - 23, 2023 to Eurofins Raleigh (Eurofins) located in Cary, NC, under chain-of-custody control. As noted in the laboratory reports included in Appendix B, samples from monitoring wells MW-5, MW-6, MW-7, MW-8, MW-9, and MW-10S and from surface water monitoring points SW-1, SW-2, SW-3, and SW-4 were received at the laboratory on May 25, 2023 in good condition and properly preserved. The MNA groundwater samples were shipped to Pace Analytical Gulf Coast (Pace) of Baton Rouge, Louisiana, under chain-of-custody control. Groundwater samples from MW-2, MW-3, MW-7, MW-8, MW-10S, MW-10D, and MW-11S were shipped on May 22, 2023 and were received by the laboratory on May 23, 2023. Monitoring well MW-5 was not sampled during the May 2023 sampling event as the depth to groundwater was measured below the pump and this well went dry during purging. 2.4.1 Compliance Monitoring The compliance groundwater samples collected in May 2023 were analyzed for the NC Appendix II constituent list. Surface water samples were analyzed for the NC Appendix I constituent list. Compliance groundwater and surface water samples collected during this event were also analyzed for 1,4-dioxane per the May 29, 2018, NC DEQ memorandum. 2.4.2 Corrective Action Monitoring A reduced list of MNA parameters was approved by the NC DEQ Solid Waste Section (SWS) in a letter dated October 18, 2017. However, the full MNA parameter list is required during back-to-back events every three years (the next full MNA list event will be in October 2023). Groundwater from compliance monitoring wells MW-5, MW-7, MW-8, and MW-10S, and corrective action wells MW-2, MW-3, MW-10D, and MW-11S, were analyzed for the following MNA parameters: First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page 7 carbon dioxide, chloride, ethane, ethene, methane, hydrogen, ferrous iron, nitrate, and sulfate. Corrective action wells MW-2, MW-3, MW-10D, and MW-11S were also analyzed for constituents of concern (COCs) which include benzene, 1,1- dichloroethane, tetrachloroethene, trichloroethene, and vinyl chloride. As presented in Section 2.4, monitoring well MW-5 was not sampled during the May 2023 sampling event as the depth to water was measured below the pump and the well went dry during purging. 3.0 LABORATORY AND FIELD QA/QC A laboratory-prepared trip blank accompanied the volatile sample containers for the May 2023 sampling event to and from the laboratory. Eurofins analyzed the trip blank for NC Appendix II VOCs. Reviews of the laboratory data were performed by WSP personnel and are included in Appendix B. Chloroform was detected at estimated concentrations in the trip blank. Methylene chloride was detected in the method blank. Based on the data review, detections of chloroform in samples collected from MW-8, SW-3, and SW-4 are considered blank-qualified. The detection of methylene chloride in samples collected from MW-10S is also blank qualified. 4.0 DATA EVALUATION The results of the data evaluations are presented in the following sections. 4.1 North Carolina Groundwater and Surface Water Standard Comparisons Analytical results and field parameters for the May 2023 groundwater samples are summarized in Table 4 and Table 5 along with available historical data. The laboratory certificates-of-analysis, chain-of-custody forms, and laboratory data reviews for the sampling event are included in Appendix B. One inorganic constituent, cobalt, was detected at a quantified concentration above the practical quantitation limit (PQL) and NC 2L Groundwater Standard (NC 2L Standard) in samples collected from the downgradient monitoring MW-7 during this monitoring event. Cobalt was also detected at an estimated concentration below the practical quantitation limit (PQL), but above the NC 2L Standard in the samples collected from downgradient monitoring well MW-6. The cobalt concentrations in samples collected from MW-6 and MW-7 are generally consistent with historical data. With regards to the estimated cobalt concentration detected in samples collected from MW-6, per 15A NCAC 02L .0202 (b)(1), “where the standard (i.e., the NC 2L Standard) for a substance is less than the PQL, the detection of that substance at or above the PQL constitutes a violation of the standard.” Historically, cobalt has been intermittently detected in samples collected from the upgradient monitoring well MW-5 at similar or higher concentrations suggesting that cobalt is naturally occurring or could be from an off-site source. No other inorganic constituents were detected in samples collected from the groundwater compliance network at concentrations above applicable groundwater quality standards during this sampling event. As presented in Table 4, two NC Appendix I listed organic constituents, 1,1-dichloroethane and tetrachloroethene, were detected at quantified concentration above the PQL and NC 2L Standard in samples collected from downgradient compliance monitoring well MW-10S during the May 2023 sampling event, as they have been historically. Vinyl chloride was detected at an estimated concentration below the PQL but above the NC 2L Standard in samples collected from MW- 10S during the May 2023 sampling event, as it has been historically. The constituent 1,4-dioxane was detected at quantified concentration above the NC 2L Standard in the samples collected from the downgradient monitoring wells MW- 6 and MW-10S. The constituent, 1,4 dioxane, is currently sampled in accordance with the May 29, 2018 NC DEQ memorandum and is not currently required by permit or regulation. Future trends for the detection of 1,4-dioxane will be monitored. No other organic compounds were detected at concentrations above the applicable groundwater standards during the May 2023 sampling event. First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page 8 One inorganic constituent, cobalt, was detected at an estimated concentration above the chronic NC In-Stream Target Values for Surface Water in samples collected from the upstream surface water monitoring point, SW-1, during the May 2023 sampling event. Cobalt was not detected in either downstream surface water sample during this sampling event. No other inorganic or organic compounds were detected in samples collected from surface water monitoring points at concentrations above the applicable surface water standards during the May 2023 event. 5.0 CORRECTIVE ACTION PERFORMANCE MONITORING RESULTS AND MONITORED NATURAL ATTENUATION EVALUATION The CAPMP was approved as part of the CAP by NC DEQ on September 15, 2015. Per the CAPMP, MNA background sampling began during the October 2015 semi-annual water quality monitoring event. The MNA sampling program was updated with the submission of a CAER on May 4, 2021 and approved by NC DEQ on May 10, 2021. With approval of the CAER, 1,4-dichlorobenzene; 1,2-dichloroethane; cis-1,2-dichloroethene; methylene chloride; and 4 Methyl-2- pentanone were removed as constituents-of-concern (COCs) for the facility. 5.1 Corrective Action Performance Monitoring Results Per the CAPMP, corrective action monitoring wells MW-2, MW-3, MW-10D, and MW-11S were sampled in addition to the compliance monitoring wells during the May 2023 sampling event. Samples collected from MW-2, MW-3, MW-7, MW-8, MW-10S, MW-10D, and MW-11S were analyzed for select MNA parameters, which included: sulfide, chloride, carbon dioxide, ethane, ethene, methane, hydrogen, ferrous iron, nitrate, and sulfate. A sample for MNA parameters could not be obtained from monitoring well MW-5 as the water level was measured below the top of the pump prior to purging and the well was pumped dry before the samples could be collected. A summary of the MNA parameter data is included as Table 8, and the laboratory certificates-of-analyses are included in Appendix B The samples collected from MW-2, MW-3, MW-10D, and MW-11S were also analyzed for a reduced list of COCs as identified in the CAP, which included benzene, 1,1-dichloroethane, tetrachloroethene, trichloroethene, and vinyl chloride. As presented, these constituents were also analyzed in samples collected from the compliance monitoring wells as part of the routine semi-annual water quality monitoring event. A summary of the COC results from the performance monitoring wells as well as the compliance monitoring wells is included in Table 9, and the laboratory certificates-of-analyses are included in Appendix B. As presented, two COCs, 1,1-dichloroethane and tetrachloroethene, were detected at a quantified concentration above the PQL and the NC 2L Standard in samples collected from monitoring well MW-10S during the May 2023 sampling event. Vinyl chloride was also detected at an estimated concentration below the PQL but above the NC 2L Standard in samples collected from MW-10S and MW-10D during the May 2023 sampling event. No other COCs were detected above the NC 2L Standards in samples collected from the corrective action monitoring wells during this sampling event. 5.2 Monitored Natural Attenuation Evaluation In accordance with the CAPMP, monitoring wells MW-2, MW-3, MW-5, MW-7, MW-8, MW-10S, MW-10D, and MW-11S serve as performance evaluation wells to assess the effectiveness of the MNA processes in reducing concentrations of COCs at the site. These monitoring wells were selected as they are located in the areas designated for corrective action by MNA in the approved CAP. The May 2023 analytical data for these monitoring wells were evaluated using the US EPA’s ”Natural Attenuation Screening Protocol (1998)” tool. First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page 9 Based on EPA screening protocols, monitoring wells MW-10S and MW-10D received scores of 29 and 20, respectively, which indicates adequate to strong evidence for anaerobic biodegradation of chlorinated organics (EPA, 1998). Monitoring wells MW-2, MW-3, MW-7, MW-8, and MW-11S received scores of 16, 13, 21, 11, and 17, respectively, which indicate there is limited to strong evidence for anaerobic biodegradation of chlorinated organics (EPA, 1998). As presented, monitoring well MW-5 (i.e., the background well) was not sampled during this event due to an inadequate volume of groundwater. The natural attenuation screening protocol forms are included in Appendix C. Based on the results of the screening protocol, there is evidence that anaerobic natural attenuation is occurring at the site. Therefore, modeling was performed on the May 2023 data to simulate remediation by natural attenuation using the BIOCHLOR screening model (EPA, 2000). Because three plumes with NC 2L Standard exceedances were identified in the NES, each plume was modeled separately. However, the north plume was not modeled during this event because tetrachloroethene, trichloroethene, dichloroethene (e.g., cis- and trans-), and vinyl chloride were not detected in samples collected from MW-2 and MW-11S. Modeling parameters for advection, dispersion, and modeled area were the same as previous models performed for the site. A 41-year simulation period was selected for the model, representing the time at which waste was first placed in the landfill (i.e., the original source): it is assumed that waste was first accepted in 1981 per the approved CAP (Golder, 2015). The May 2023 results represent current conditions at the facility and therefore, the models were calibrated to the current sample results by adjusting the biotransformation data within a prescribed range specified by literature values within the BIOCHLOR program. Once the models were calibrated, a forecasted model was created by changing the simulation period to 100 years to assess the size of the contaminant plume in the future. BIOCHLOR generates plots that compare concentrations of tetrachloroethene, trichloroethene, dichloroethene, vinyl chloride, and ethene over time with no degradation to concentrations where sequential 1st order decay is occurring. The plots are provided in Appendix C. The centerline plots can be used to forecast the contaminant plume size over time. For the plume located northeast of the waste unit, analytical data for samples collected from MW-8 and MW-3 were modeled and are presented in Appendix C on Figures C-9 and C-10. Vinyl chloride and ethene were not detected in samples collected from MW-8 and tetrachloroethene, trichloroethene, dichloroethane, vinyl chloride, and ethene were not detected in samples collected from MW-3. Cis-1,2-dichloroethene detected in samples collected from MW-8 plot on or below their respective 1st order sequential decay curves. The cis-1,2-dichloroethene variety was the prominent form of dichloroethene, indicating that the detections represent daughter products of tetrachloroethene and/or trichloroethene. The results from these plots indicate that natural attenuation is occurring in the northeast plume. According to the current data and as indicated by the BIOCHLOR model, it is likely that the plume size has stabilized. For the plume located west of the waste management unit, analytical data for samples collected from MW-10S, MW-10D, and SW-2 were modeled and are presented in Appendix C on Figures C-11 and C-12. Ethene was not detected in samples collected from MW-10S; tetrachloroethene and trichloroethene were not detected in samples collected from MW-10D; and tetrachloroethene, trichloroethene, dichloroethene, vinyl chloride, and ethene were not detected in samples collected from SW-2. The concentrations of tetrachloroethene and dichloroethene in samples collected from MW-10S plot below their respective 1st order sequential decay curve. The cis-1,2-dichloroethene isomer was again the prominent form of dichloroethene, indicating that the detections represent daughter products of tetrachloroethene and/or trichloroethene. Concentrations or vinyl chloride and ethene in samples collected from MW-10D plot below their respective 1st order sequential decay curve. The results from these plots indicate that natural attenuation is occurring in the western plume. According to the current data and as indicated by the BIOCHLOR model, it is likely that the plume size has stabilized. Because of the low concentration of parent compounds and multiple degradation pathways for cis-1,2-dichloroethene (aerobic and anaerobic), there are limited concentrations of vinyl chloride and ethene in each of the plumes evaluated. The First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page 10 concentration trends show that cis-1,2-dichloroethene is not accumulating and that degradation of the chlorinated compounds is continuing. 6.0 CONCLUSIONS The results of the first semi-annual water quality monitoring event of 2023, shows continued evidence of natural attenuation of VOCs in groundwater at the site. Evidence suggests that MNA continues to be a viable remedy. However, due to the continued presence of VOCs above applicable groundwater standards, the Randolph County Landfill will continue to be monitored in accordance with the requirements of the Assessment Monitoring Program as outlined in Title 15A NCAC 13B .1634. The next compliance and MNA monitoring event for this facility is tentatively scheduled for October 2023. First Semi-Annual 2023 Water Quality Monitoring Report Project No. 31404568.018 Randolph County Landfill WSP Page 11 7.0 REFERENCES Butler, J.R., and D.T. Secor, Jr., 1991, The Central Piedmont (Chapter 4) in J.W. Horton, Jr. and V.A. Zullo, eds., The Geology of the Carolinas (Carolina Geological Society Fiftieth Anniversary Volume), The University of Tennessee Press, pp. 66-71. Carolina Piedmont, Department of Environment and Natural Resources, Groundwater Section, Resource Evaluation Program Mooresville Regional Office. EPA (United States Environmental Protection Agency), 1998, Technical Protocol for Evaluating Natural Attenuation of Chlorinated Solvents in Ground Water, September, 1998 EPA (United States Environmental Protection Agency), 2003, Guidance for Developing Ecological Soil Screening Levels, November 2003. Table 2.3. Golder Associates, 2015, Corrective Action Plan, Randolph County Closed Municipal Solid Waste Landfill, Permit No. 76- 01, July 2015. H&S (Hazen and Sawyer), 1994, Transition Plan - Randolph County Landfill, October 8, 1994, including the 1995 Water Quality Monitoring Plan references. H&S (Hazen and Sawyer), 1997, Randolph County Landfill Groundwater Monitoring Data H&S No. 3796, December 4, 1997. H&S (Hazen and Sawyer), 1995. Baseline Groundwater Monitoring—Randolph County MSW-Landfill, October 19, 1995. Johnson, A.I., 1967, Specific Yield – Compilation of Specific Yields for Various Materials: U.S. Geological Survey Water Supply Paper 1662-D. NCGS (North Carolina Geologic Survey), 1985. Geologic Map of North Carolina. Pippin, Charles, et al., October 3, 2003, Distribution of Total Arsenic in Groundwater in the North. Wang, Shuying et al., 2008. GSA (Geological Society of America), “Petrologic and Hydrogeologic Characteristics of a Felsic Metavolcanic Tuff Hydrogeologic Unit in the Carolina Terrane: Preliminary Findings from the NC Zoo Groundwater Research Station, Asheboro, Randolph County, NC” from Abstracts with Programs, Vol. 40, No. 4, p. 53. TABLES September 2023 31404568.018 TOC Elevation (ft AMSL) Date GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW GW Elev DTW MEAN 594.48 16.49 569.23 13.52 565.85 21.48 703.38 15.72 662.14 60.53 613.92 11.02 566.36 20.61 579.71 15.02 597.37 20.42 584.05 12.87 588.75 7.97 566.04 11.69 565.37 12.20 615.33 9.29 636.36 5.18 682.57 12.19MAXIMUM598.32 20.93 578.40 26.76 571.32 26.49 716.89 27.65 673.00 69.25 617.55 15.64 570.85 25.15 585.57 23.99 603.09 25.62 585.83 16.16 591.52 9.96 570.11 15.20 568.64 15.04 618.80 13.37 637.72 5.64 689.33 18.41MINIMUM590.04 12.65 555.99 4.35 560.84 16.01 691.45 2.21 653.42 49.67 609.32 7.41 561.82 16.12 570.74 9.16 592.17 14.70 580.76 11.09 586.72 5.16 562.53 7.62 562.53 8.93 611.25 5.82 635.90 3.82 676.35 5.43MAX-MEAN 3.84 4.44 9.17 13.24 5.47 5.01 13.51 11.93 10.86 8.72 3.63 4.62 4.49 4.54 5.86 8.97 5.72 5.20 1.78 3.29 2.77 1.99 4.07 3.51 3.27 2.84 3.47 4.08 1.36 0.46 6.76 6.22MAX-MIN 8.28 8.28 22.41 22.41 10.48 10.48 25.44 25.44 19.58 19.58 8.23 8.23 9.03 9.03 14.83 14.83 10.92 10.92 5.07 5.07 4.80 4.80 7.58 7.58 6.11 6.11 7.55 7.55 1.82 1.82 12.98 12.98 MW-5 MW-11SMW-10DMW-10S MW-A1MW-11D 624.62577.57577.73596.68596.92610.97 582.75 MW-1 MW-4MW-3MW-2 MW-9MW-8MW-7MW-6 MW-A3MW-A2 1 of 1 September 2023 31404568.018 Gradient Calculation Segment Flow Direction Length (feet)Elevations (feet) Horizontal Gradient (i, feet)Porosity Conductivity Velocity (Vgw, feet/year) 640 580 640 570 640 580 Notes: Value for K is from Wang and others, 2008. Groundwater Monitoring Data. 2.75E-04 105.80 161.43i3ENE7050.0851 0.15 2.75E-04 i 2 NE 1255 0.0558 0.15 TABLE 2 Summary of Estimated Horizontal Flow Velocities Closed Randolph County Landfill, Permit No. 76-01 May 2023 i 1 NNE 1081 0.0555 0.15 2.75E-04 105.28 1 of 1 September 2023 31404568.018 Northing Easting MW-1 May 1993 730969.68 1773296.52 609.21 610.97 24.0 2 585.21 - 600.21 NA Water Levels Only MW-2 June 1987 731522.48 1774019.99 580.97 582.75 33.0 2 547.97 - 567.97 NA Corrective Action Well MW-3 September 1987 730771.64 1774456.14 585.17 587.33 30.0 2 555.17 - 575.17 NA Corrective Action Well MW-4 September 1987 729062.23 1773249.03 716.53 719.10 47.5 2 669.03 - 699.03 NA Water Levels Only MW-5 September 17, 1994 729547.38 1773540.91 720.55 722.67 68.5 2 652.05 - 667.05 Bedrock Compliance Well MW-6 September 12, 1994 730556.43 1772967.50 622.96 624.96 17.8 2 605.46 - 615.46 Saprolite / Bedrock Compliance Well MW-7 September 12, 1994 731476.90 1774015.84 585.14 586.97 26.0 2 560.14 - 575.14 Saprolite Compliance Well MW-8 September 1994 730738.59 1774321.51 592.68 594.73 29.0 2 564.68 - 579.68 NA Compliance Well MW-9 September 13, 2014 729956.09 1774063.62 615.93 617.79 33.0 2 582.93 - 597.93 Saprolite / PWR Compliance Well MW-10S December 8, 2010 731020.76 1773274.20 594.48 596.92 25.0 2 569.48 - 584.48 Saprolite Compliance Well MW-10D December 7, 2010 731017.22 1773270.37 594.56 596.80 73.0 2 521.56 - 531.56 Bedrock Corrective Action Well MW-11S December 1, 2010 731567.02 1774109.06 574.88 577.73 25.0 2 549.88 - 559.88 MW-11D December 2, 2010 731572.75 1774116.06 574.64 577.57 65.0 2 509.64 - 519.64 Bedrock Water Levels Only MW-A1 June 1993 730435.04 1772857.60 623.50 624.62 15.0 2 611.00 - 622.00 NA Water Levels Only MW-A2 May 1993 728762.14 1772787.17 639.41 641.54 17.5 2 623.41 - 639.41 NA Water Levels Only MW-A3 June 1993 729065.19 1772398.70 693.14 694.76 32.0 2 663.14 - 683.14 NA Water Levels Only Notes:ft AMSL = feet above mean sea level ft bgs = feet below ground surface TOC = Top of Well Casing Elevation NA = no data available PWR = partially weathered rock Well construction informationfor all wells installed prior to 2010 provided by Hazen & Sawyer and Randolph County. Groundwater Monitoring Network Information: MW-5 is the facility's background well. MW-2 was replaced by MW-7. MW-3 was replaced by MW-8. MW-4 was replaced by MW-5. MW-A1 was replaced by MW-6. TABLE 3 Summary of Well Construction Information Closed Randolph County Landfill, Permit No. 76-01 Well Identification Surface Elevation TOCElevation(ft AMSL) WellDepth(ft bgs) WellDiameter(inches) Screened Interval(ft AMSL) Well Status Geology of Screened IntervalDate of Construction Coordinates 1 of 1 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S 3.38 J --ND 1.18 J ND ND --ND 1.02 J 1.02 J 2.91 J ND 0.428 J 0.413 J ND 12 ND ND --ND 13 ND ND ND --ND Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit 1 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Barium ug/L 09/22/94 ----500 ND ND ND ND ND --NDNC 2L = 700 ug/L ug/L 11/08/94 ----500 ND ND ND ND ND --NDEPA MCL = 2000 ug/L ug/L 01/18/95 ----500 ND ND ND ND ND --NDug/L 04/23/96 ----500 ND ND ND ND ND --NDug/L 06/17/97 ----500 ND ND ND ND ND --NDug/L 10/16/97 ----500 ND ND ND ND ND --NDug/L 04/21/98 ----500 ND ND ND ND ND --NDug/L 04/07/99 ----500 ND ND ND ND ND --ND ug/L 10/13/99 ----500 ND ND ND ND ND --NDug/L 04/05/00 ----500 ND ND ND ND ND --NDug/L 10/25/00 ----500 ND ND ND ND ND --NDug/L 04/04/01 ----500 ND ND ND ND ND --NDug/L 04/08/02 ----500 ND ND ND ND ND --NDug/L 10/21/02 ----500 ND ND ND ND ND --NDug/L 04/14/03 ----500 ND ND ND ND ND --NDug/L 10/01/03 ----500 ND ND ND ND ND --NDug/L 04/05/04 ----500 ND ND ND ND ND --NDug/L 10/18/04 ----500 ND ND ND ND ND --NDug/L 04/07/05 ----500 ND ND ND ND ND --NDug/L 10/06/05 ----500 ND ND ND ND ND --ND ug/L 04/03/06 ----500 ND ND ND ND ND --NDug/L 10/03/06 ----500 ND ND ND ND ND --NDug/L 04/05/07 ----100 ND ND ND ND ND --NDug/L 10/18/07 ----100 1.2 J 54.4 J --1.2 J 4.6 J --0.04 Jug/L 04/29/08 ----100 4.0 J 13.6 J 1.4 J 2.4 J 7.9 J --0.2 Jug/L 10/23/08 ----100 ND 21.4 J 1.90 J 3.10 J 5.70 J --NDug/L 04/07/09 ----100 ND 16.9 J ND ND 9.48 J --NDug/L 10/19/09 ----100 1.81 J 21.3 J 2.84 J 1.61 J 6.45 J --NDug/L 04/28/10 ----100 1.77 J 34.2 J 1.81 J 2.95 J 14.1 J --NDug/L 10/12/10 ----100 1.74 J 18.7 J 2.22 J 2.03 J 5.67 J --NDug/L 04/11/11 ----100 2.68 J 18.9 J 1.94 J 2.57 J 10.2 J --NDug/L 10/04/11 ----100 3.26 J 23.7 J 2.84 J 2.09 J 6.87 J --NDug/L 04/10/12 ----100 ND 12.4 J 2.95 J 2.66 J 14.6 J --ND ug/L 10/15/12 ----100 1.17 B 26.5 J 6.52 J 2.09 B 7.01 J --1.04 Jug/L 04/09/13 ----100 2.03 J 12.2 J 1.95 J 3.00 J 10.1 J --NDug/L 10/08/13 ----100 3.32 J 22.7 J 2.95 J 2.75 J 8.38 J --NDug/L 04/08/14 ----100 2.10 B 9.36 J 1.82 B 3.38 B 13.6 J --1.09 Jug/L 10/08/14 1.0 --100 4.33 B 24.7 J 2.43 B 3.40 B 6.83 B --3.14 Jug/L 04/08/15 1.0 --100 3.05 J 12.8 J 2.21 J 2.86 J 9.99 J --NDug/L 10/28/15 1.0 --100 1.93 B 19.6 J 2.21 B 2.17 B 6.98 J 4.44 B 1.20 Jug/L 04/05/16 1.0 --100 2.54 J 8.85 J 1.77 J 2.19 J 13.4 J 4.62 J NDug/L 10/04/16 1.0 --100 1.40 J 19.8 J 2.44 J 2.91 J 7.60 J 5.33 J NDug/L 04/03/17 1.0 --100 ND 18.9 J ND 2.53 J 8.82 J 4.93 J NDug/L 10/03/17 1.0 --100 1.52 B 15.4 J 2.20 B 2.17 B 5.52 B 4.91 B 2.77 Jug/L 05/22/18 1.0 --100 1.27 J 9.35 J 1.91 J 2.50 J 8.57 J 4.61 J ND ug/L 10/23/18 1.1 10 --4.27 J 30.0 2.33 J 2.80 J 7.81 J 5.43 J ND 5 ND --ND 11 ND ND ND --ND5NDNDND--ND 2 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Cadmium ug/L 09/22/94 ----1 ND ND ND ND ND --NDNC 2L = 2 ug/L ug/L 11/08/94 ----1 ND ND ND ND ND --NDEPA MCL = 5 ug/L ug/L 01/18/95 ----1 ND ND ND ND ND --NDug/L 04/23/96 ----1 1 ND ND ND 1 --NDug/L 06/17/97 ----1 ND ND ND ND ND --NDug/L 10/16/97 ----1 ND ND ND ND ND --NDug/L 04/21/98 ----1 ND ND ND ND ND --NDug/L 04/07/99 ----1 ND ND ND ND ND --ND ug/L 10/13/99 ----1 ND ND ND ND ND --NDug/L 04/05/00 ----1 ND ND ND ND ND --NDug/L 10/25/00 ----1 ND ND ND ND ND --NDug/L 04/04/01 ----1 ND ND ND ND ND --NDug/L 04/08/02 ----1 ND ND ND ND ND --NDug/L 10/21/02 ----1 3 ND ND ND ND --NDug/L 04/14/03 ----1 2 ND ND ND ND --NDug/L 10/01/03 ----1 ND ND ND ND ND --NDug/L 04/05/04 ----1 1 ND ND ND ND --NDug/L 10/18/04 ----1 ND ND ND ND ND --NDug/L 04/07/05 ----1 ND ND ND ND ND --NDug/L 10/06/05 ----1 ND ND ND ND ND --ND ug/L 04/03/06 ----1 ND 1 ND ND ND --NDug/L 10/03/06 ----1 2 ND ND ND ND --NDug/L 04/05/07 ----1 ND ND ND ND ND --NDug/L 10/18/07 ----1 0.5 J 1 --0.1 J 0.1 J --NDug/L 04/29/08 ----1 ND ND ND ND ND --NDug/L 10/23/08 ----1 ND ND ND ND ND --NDug/L 04/07/09 ----1 0.37 J ND 0.37 J ND 0.11 J --NDug/L 10/19/09 ----1 ND ND 0.640 J ND ND --NDug/L 04/28/10 ----1 ND ND ND ND ND --NDug/L 10/12/10 ----1 ND ND 0.501 J ND ND --NDug/L 04/11/11 ----1 ND ND ND ND ND --NDug/L 10/04/11 ----1 ND ND 0.429 J ND ND --NDug/L 04/10/12 ----1 ND ND 0.758 J ND ND --ND ug/L 10/15/12 ----1 ND ND 0.730 B ND ND --0.433 Jug/L 04/09/13 ----1 ND ND 0.421 J ND ND --NDug/L 10/08/13 ----1 ND ND 0.446 J ND ND --NDug/L 04/08/14 ----1 ND ND 0.467 J ND ND --NDug/L 10/08/14 0.36 --1 ND 0.530 J 0.488 J ND ND --NDug/L 04/08/15 0.36 --1 ND ND ND ND ND --0.427 Jug/L 10/28/15 0.36 --1 ND ND 0.539 J ND ND ND NDug/L 04/05/16 0.36 --1 ND ND ND ND ND ND NDug/L 10/04/16 0.36 --1 ND ND 0.481 J ND ND ND NDug/L 04/03/17 0.36 --1 ND ND 0.536 J ND ND ND NDug/L 10/03/17 0.36 --1 ND ND ND ND ND ND NDug/L 05/22/18 0.36 --1 ND ND ND ND ND ND NDug/L 10/23/18 0.36 1 --ND ND ND ND ND ND ND ug/L 04/16/19 0.36 1 --ND ND ND ND ND ND NDug/L 10/15/19 0.36 1 --ND 0.435 J ND ND ND ND NDug/L 04/14/20 0.36 1 --ND ND 0.429 J ND ND ND NDug/L 10/07/20 0.36 1 --ND ND 0.364 J ND ND ND NDug/L 05/10/21 0.36 1 --ND ND ND ND ND ND NDug/L 10/06/21 0.36 1 --ND ND ND ND ND ND NDug/L 05/17/22 0.36 1 --ND ND ND ND ND ND NDug/L 10/10/22 0.44 5 --DRY ND ND ND ND ND NDug/L 05/22/23 0.44 5 --DRY ND 0.5 J ND ND ND NDChromiumug/L 09/22/94 ----10 ND ND ND ND ND --NDNC 2L = 10 ug/L ug/L 11/08/94 ----10 ND ND ND ND ND --NDEPA MCL = 100 ug/L ug/L 01/18/95 ----10 ND ND ND ND ND --ND ug/L 04/23/96 ----10 ND ND ND ND ND --NDug/L 06/17/97 ----10 ND ND ND 18 ND --NDug/L 10/16/97 ----10 ND ND 22 22 ND --NDug/L 04/21/98 ----10 ND ND ND ND ND --NDug/L 04/07/99 ----10 ND 28 ND ND ND --NDug/L 10/13/99 ----10 ND 81 ND 12 ND --NDug/L 04/05/00 ----10 ND 45 ND 15 ND --NDug/L 10/25/00 ----10 ND 152 23 24 ND --NDug/L 04/04/01 ----10 ND 104 ND 40 ND --NDug/L 04/08/02 ----10 ND 212 ND 33 ND --NDug/L 10/21/02 ----10 12 77 ND 14 ND --NDug/L 04/14/03 ----10 ND 94 ND ND ND --ND ug/L 10/01/03 ----10 ND 28 11 43 ND --NDug/L 04/05/04 ----10 ND 14 ND ND 11 --NDug/L 10/18/04 ----10 ND 47 ND 12 ND --NDug/L 04/07/05 ----10 ND 21 ND ND ND --NDug/L 10/06/05 ----10 ND 26 ND ND ND --NDug/L 04/03/06 ----10 ND 28 ND ND ND --NDug/L 10/03/06 ----10 ND 12 ND ND ND --NDug/L 04/05/07 ----10 ND ND ND ND ND --NDug/L 10/18/07 ----10 0.4 J 8.6 J --ND ND --NDug/L 04/29/08 ----10 3.5 J ND ND ND ND --NDug/L 10/23/08 ----10 ND ND ND ND ND --NDug/L 04/07/09 ----10 0.8 J 1.4 J ND ND ND --NDug/L 10/19/09 ----10 ND ND 1.19 J ND ND --ND ug/L 04/28/10 ----10 ND ND ND ND ND --NDug/L 10/12/10 ----10 ND ND ND ND ND --NDug/L 04/11/11 ----10 ND 1.88 J 3.98 J 4.25 J 4.16 J --NDug/L 10/04/11 ----10 1.03 J ND ND ND ND --NDug/L 04/10/12 ----10 ND ND ND ND ND --NDug/L 10/15/12 ----10 ND ND 3.03 J ND 1.13 J --NDug/L 04/09/13 ----10 ND 4.21 J ND ND ND --NDug/L 10/08/13 ----10 ND ND ND ND ND --NDug/L 04/08/14 ----10 1.68 J 1.41 J ND ND ND --NDug/L 10/08/14 1.4 --10 2.42 J 1.57 J ND ND ND --NDug/L 04/08/15 1.4 --10 ND ND ND ND ND --NDug/L 10/28/15 1.4 --10 ND ND ND ND ND ND ND ug/L 04/05/16 1.4 --10 ND ND ND ND ND ND NDug/L 10/04/16 1.4 --10 ND 1.92 J ND ND ND ND NDug/L 04/03/17 1.4 --10 ND ND ND 3.01 B ND ND 4.45 Jug/L 10/03/17 1.4 --10 2.36 J ND ND ND ND ND NDug/L 05/22/18 1.4 --10 ND 1.59 J ND ND ND ND ND ug/L 10/23/18 1.4 10 --2.15 J ND ND ND ND ND ND 10.5 (ND)ND ND 8.36 J ND 3 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Cobalt ug/L 09/22/94 ----10 ND ND ND ND ND --NDNC 2L = 1 ug/L ug/L 11/08/94 ----10 ND 15 ND ND ND --ND(No EPA MCL)ug/L 01/18/95 ----10 ND ND ND ND ND --NDug/L 04/23/96 ----10 ND ND ND ND ND --NDug/L 06/17/97 ----10 ND 10 ND 25 ND --NDug/L 10/16/97 ----10 ND ND 17 18 ND --NDug/L 04/21/98 ----10 ND ND ND ND ND --NDug/L 04/07/99 ----10 ND 15 ND ND ND --ND ug/L 10/13/99 ----10 ND 39 ND 10 ND --NDug/L 04/05/00 ----10 ND 21 ND 13 ND --NDug/L 10/25/00 ----10 ND 54 26 20 ND --NDug/L 04/04/01 ----10 ND 41 ND 35 ND --NDug/L 04/08/02 ----10 ND 78 ND 21 ND --NDug/L 10/21/02 ----10 19 39 ND 12 ND --NDug/L 04/14/03 ----10 10 42 ND ND ND --NDug/L 10/01/03 ----10 ND 19 16 46 ND --NDug/L 04/05/04 ----10 ND ND ND ND ND --NDug/L 10/18/04 ----10 ND 44 ND ND ND --NDug/L 04/07/05 ----10 ND 10 ND ND ND --NDug/L 10/06/05 ----10 ND ND ND ND ND --ND ug/L 04/03/06 ----10 ND 11 ND ND ND --NDug/L 10/03/06 ----10 ND ND ND ND ND --NDug/L 04/05/07 ----10 ND ND ND ND ND --NDug/L 10/18/07 ----10 ND 3.5 J --ND ND --NDug/L 04/29/08 ----10 7.0 J ND 5.7 J ND ND --NDug/L 10/23/08 ----ND ND 6.8 J ND ND --NDug/L 04/07/09 ----10 ND 0.6 J 4.9 J ND ND --NDug/L 10/19/09 ----10 ND ND 6.86 J ND ND --NDug/L 04/28/10 ----10 ND ND 5.99 J ND ND --NDug/L 10/12/10 ----10 ND ND 3.67 J ND ND --NDug/L 04/11/11 ----10 ND ND 6.60 J ND ND --NDug/L 10/04/11 ----10 ND ND 4.13 J ND ND --NDug/L 04/10/12 ----10 ND ND 5.97 J ND ND --ND ug/L 10/15/12 ----10 ND ND 6.68 J ND ND --NDug/L 04/09/13 ----10 ND ND 5.88 J ND ND --NDug/L 10/08/13 ----10 ND ND 6.44 J ND ND --NDug/L 04/08/14 ----10 ND 1.18 J 5.77 J ND ND --NDug/L 10/08/14 1.1 --10 ND ND 9.68 J ND ND --NDug/L 04/08/15 1.1 --10 ND ND 6.06 J ND ND --NDug/L 10/28/15 1.1 --10 ND ND 6.29 J ND ND 1.24 J NDug/L 04/05/16 1.1 --10 1.56 J ND 5.72 J ND ND 2.86 J NDug/L 10/04/16 1.1 --10 ND ND 6.06 J ND ND 2.54 J NDug/L 04/03/17 1.1 --10 ND 1.24 J 5.17 J ND ND 1.56 J NDug/L 10/03/17 1.1 --10 ND ND 5.74 J 1.17 J ND ND NDug/L 05/22/18 1.1 --10 ND ND 6.61 J ND ND 1.72 J NDug/L 10/23/18 1.4 10 --2.94 J 4.71 J 6.03 J ND ND 2.24 J ND ug/L 04/16/19 1.4 10 --ND ND 7.59 J ND ND ND NDug/L 10/15/19 1.4 10 --ND 1.89 J 5.40 J ND ND ND NDug/L 04/14/20 1.4 10 --ND ND 10.6 (8.83)(J)ND ND ND NDug/L 10/07/20 1.4 10 --ND 9.24 J 4.42 J ND ND ND NDug/L 05/10/21 1.4 10 --ND ND 11.6 2.51 J ND ND NDVerification Event ug/L 08/19/21 1.4 10 ------7.39 J --------ug/L 10/06/21 1.4 10 --ND 2.86 J 6.53 J ND ND ND NDug/L 05/17/22 1.4 10 --ND ND 12.1 ND ND ND NDVerification Event ug/L 08/22/22 1.4 10 ------7.51 J --------Dissolved ug/L 08/22/22 1.4 10 ------6.50 J --------ug/L 10/10/22 1.4 10 --DRY 4.00 J 4.90 J ND ND ND NDug/L 05/22/23 1.4 10 --DRY 1.56 J 10.9 ND ND ND ND Copper ug/L 09/22/94 ----200 ND ND ND ND ND --NDNC 2L = 1000 ug/L ug/L 11/08/94 ----200 ND ND ND ND ND --NDEPA MCL = 1300 ug/L#ug/L 01/18/95 ----200 ND ND ND ND ND --NDug/L 04/23/96 ----200 ND ND ND ND ND --NDug/L 06/17/97 ----200 ND 341 ND 437 ND --NDug/L 10/16/97 ----200 ND ND ND ND ND --NDug/L 04/21/98 ----200 ND ND ND ND ND --NDug/L 04/07/99 ----200 ND ND ND ND ND --NDug/L 10/13/99 ----200 ND 216 ND ND ND --NDug/L 04/05/00 ----200 ND ND ND ND ND --NDug/L 10/25/00 ----200 210 ND ND ND ND --NDug/L 04/04/01 ----200 ND ND ND ND ND --ND ug/L 04/08/02 ----200 ND 334 ND ND ND --NDug/L 10/21/02 ----200 ND ND ND ND ND --NDug/L 04/14/03 ----200 ND ND ND ND ND --NDug/L 10/01/03 ----200 ND ND ND ND ND --NDug/L 04/05/04 ----200 ND ND ND ND ND --NDug/L 10/18/04 ----200 ND ND ND ND ND --NDug/L 04/07/05 ----200 ND ND ND ND ND --NDug/L 10/06/05 ----200 ND ND ND ND ND --NDug/L 04/03/06 ----200 ND ND ND ND ND --NDug/L 10/03/06 ----200 ND ND ND ND ND --NDug/L 04/05/07 ----10 ND ND ND ND ND --NDug/L 10/18/07 ----10 1.6 B 13 --0.3 B 0.2 B --0.7 Jug/L 04/29/08 ----10 10.5 2.4 B ND 1.2 B ND --0.9 J ug/L 10/23/08 ----10 ND ND ND ND ND --NDug/L 04/07/09 ----10 ND 1.61 J ND ND ND --NDug/L 10/19/09 ----10 ND ND ND ND ND --1.60 Jug/L 04/28/10 ----10 ND ND ND ND ND --NDug/L 10/12/10 ----10 ND 2.72 B ND ND ND --1.60 Jug/L 04/11/11 ----10 ND 3.18 J ND 1.85 J ND --NDug/L 10/04/11 ----10 ND ND ND ND ND --NDug/L 04/10/12 ----10 ND ND 6.48 J ND ND --NDug/L 10/15/12 ----10 ND ND 7.40 J ND ND --NDug/L 04/09/13 ----10 ND 4.04 J ND ND ND --NDug/L 10/08/13 ----10 ND ND ND ND ND --NDug/L 04/08/14 ----10 ND ND ND ND ND --ND ug/L 10/08/14 1.6 --10 ND 3.87 J ND 2.42 J ND --NDug/L 04/08/15 1.6 --10 ND ND ND ND ND --3.01 Jug/L 10/28/15 1.6 --10 ND ND ND ND ND ND NDug/L 04/05/16 1.6 --10 2.12 B 1.65 B ND ND ND ND 3.64 Jug/L 10/04/16 1.6 --10 7.33 B 7.07 B 3.76 B 2.54 B 4.65 B 3.38 B 5.15 Jug/L 04/03/17 1.6 --10 ND 4.23 B ND ND 4.00 B ND 3.21 Jug/L 10/03/17 1.6 --10 2.14 B 4.40 B ND 3.61 B 2.00 B ND 4.84 Jug/L 05/22/18 1.6 --10 ND 3.66 J ND ND ND ND NDug/L 10/23/18 1.6 10 --ND ND ND ND ND ND 1.97 Jug/L 04/16/19 1.6 10 --ND ND ND ND ND ND NDug/L 10/15/19 1.6 10 --ND 5.58 J ND 1.67 J ND ND NDug/L 04/14/20 1.6 10 --4.42 J ND ND ND 1.80 J ND NDug/L 10/07/20 1.6 10 --1.92 J 8.11 J ND 2.01 J ND ND ND ug/L 05/10/21 1.6 10 --ND ND ND ND ND ND NDug/L 10/06/21 1.6 10 --ND 6.16 J ND ND ND ND NDug/L 05/17/22 1.6 10 --3.30 J 16.4 ND ND 12.4 ND NDug/L 10/10/22 3.2 20 --DRY 3.70 J ND ND ND ND NDug/L 05/22/23 3.2 20 --DRY 7.98 J ND ND ND ND ND 4 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Lead ug/L 09/22/94 ----10 ND ND ND ND ND --NDNC 2L = 15 ug/L ug/L 11/08/94 ----10 ND ND ND ND ND --NDEPA MCL = 15 ug/L#ug/L 01/18/95 ----10 ND ND ND ND ND --NDug/L 04/23/96 ----10 ND ND ND ND ND --NDug/L 06/17/97 ----10 ND 16 ND 31 11 --NDug/L 10/16/97 ----10 ND ND 13 19 ND --NDug/L 04/21/98 ----10 ND ND ND ND ND --NDug/L 04/07/99 ----10 ND 13 ND ND ND --ND ug/L 10/13/99 ----10 ND 63 ND 13 ND --NDug/L 04/05/00 ----10 ND 12 ND ND ND --NDug/L 10/25/00 ----10 ND 75 12 15 ND --NDug/L 04/04/01 ----10 ND 3470 42 20 ND --NDug/L 04/08/02 ----10 ND 41 ND ND ND --NDug/L 10/21/02 ----10 ND 74 ND ND ND --NDug/L 04/14/03 ----10 ND 53 ND ND ND --NDug/L 10/01/03 ----10 ND ND 11 17 ND --NDug/L 04/05/04 ----10 ND ND ND ND ND --NDug/L 10/18/04 ----10 ND 119 ND ND ND --NDug/L 04/07/05 ----10 ND 46 ND ND ND --NDug/L 10/06/05 ----10 ND 41 ND 11 ND --ND ug/L 04/03/06 ----10 ND 47 ND ND ND --NDug/L 10/03/06 ----10 ND 13 ND ND ND --NDug/L 04/05/07 ----10 ND ND ND ND ND --NDug/L 10/18/07 ----10 0.1 J 8.4 J --0.1 J ND --NDug/L 04/29/08 ----10 3.6 J ND ND ND ND --NDug/L 10/23/08 ----10 ND ND ND ND ND --NDug/L 04/07/09 ----10 ND ND ND ND ND --NDug/L 10/19/09 ----10 ND ND ND ND ND --NDug/L 04/28/10 ----10 ND ND ND ND ND --NDug/L 10/12/10 ----10 ND ND ND ND ND --NDug/L 04/11/11 ----10 ND ND ND ND ND --NDug/L 10/04/11 ----10 ND ND ND ND ND --NDug/L 04/10/12 ----10 ND ND ND 3.93 B 2.38 B --2.22 J ug/L 10/15/12 ----10 ND ND 2.55 J ND ND --NDug/L 04/09/13 ----10 ND ND ND ND ND --NDug/L 10/08/13 ----10 ND ND ND ND ND --NDug/L 04/08/14 ----10 ND ND ND ND ND --NDug/L 10/08/14 2.1 --10 ND ND ND ND ND --NDug/L 04/08/15 2.1 --10 ND ND ND ND ND --NDug/L 10/28/15 2.1 --10 ND ND ND ND ND ND NDug/L 04/05/16 3.1 --10 ND ND ND ND ND ND NDug/L 10/04/16 3.1 --10 ND ND ND ND ND ND NDug/L 04/03/17 3.1 --10 ND ND ND ND ND ND NDug/L 10/03/17 3.1 --10 ND ND ND ND ND ND NDug/L 05/22/18 3.1 --10 ND ND ND ND ND ND ND ug/L 10/23/18 3.1 10 --ND ND ND ND ND ND ND 3.8 --ND1.4 --ND2.0 --ND 5 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Selenium ug/L 09/22/94 ----20 ND ND ND ND ND --NDNC 2L = 20 ug/L ug/L 11/08/94 ----20 ND ND ND ND ND --NDEPA MCL = 50 ug/L ug/L 01/18/95 ----20 ND ND ND ND ND --NDug/L 04/23/96 ----20 ND ND ND ND ND --NDug/L 06/17/97 ----20 ND ND ND ND ND --NDug/L 10/16/97 ----20 ND ND ND ND ND --NDug/L 04/21/98 ----20 ND ND ND ND ND --NDug/L 04/07/99 ----20 ND ND ND ND ND --ND ug/L 10/13/99 ----20 ND ND ND ND ND --NDug/L 04/05/00 ----20 ND ND ND ND ND --NDug/L 10/25/00 ----20 ND ND ND ND ND --NDug/L 04/04/01 ----20 ND ND ND ND ND --NDug/L 04/08/02 ----20 ND ND ND ND ND --NDug/L 10/21/02 ----20 ND ND ND ND ND --NDug/L 04/14/03 ----20 ND ND ND ND ND --NDug/L 10/01/03 ----20 ND ND ND ND ND --NDug/L 04/05/04 ----20 ND ND ND ND ND --NDug/L 10/18/04 ----20 ND ND ND ND ND --NDug/L 04/07/05 ----20 ND ND ND ND ND --NDug/L 10/06/05 ----20 ND ND ND ND ND --ND ug/L 04/03/06 ----20 ND ND ND ND ND --NDug/L 10/03/06 ----20 ND ND ND ND ND --NDug/L 04/05/07 ----10 ND ND ND ND ND --NDug/L 10/18/07 ----10 0.9 J ND --ND ND --NDug/L 04/29/08 ----10 ND ND ND ND ND --3.9 Jug/L 10/23/08 ----10 ND ND ND ND ND --NDug/L 04/07/09 ----10 ND ND ND ND ND --3.7 Jug/L 10/19/09 ----10 ND ND ND ND ND --NDug/L 04/28/10 ----10 ND ND ND ND ND --NDug/L 10/12/10 ----10 ND ND ND ND ND --NDug/L 04/11/11 ----10 ND ND ND ND ND --2.85 Jug/L 10/04/11 ----10 ND ND ND ND ND --NDug/L 04/10/12 ----10 ND ND ND ND ND --ND ug/L 10/15/12 ----10 ND ND ND ND ND --NDug/L 04/09/13 ----10 ND ND ND ND ND --NDug/L 10/08/13 ----10 ND ND ND ND ND --NDug/L 04/08/14 ----10 ND ND ND ND ND --NDug/L 10/08/14 5.0 --10 ND ND ND ND ND --NDug/L 04/08/15 5.0 --10 ND ND ND ND ND --NDug/L 10/28/15 5.0 --10 ND ND ND ND ND ND NDug/L 04/05/16 6.2 --10 ND ND ND ND ND ND NDug/L 10/04/16 6.2 --10 ND ND ND ND ND ND NDug/L 04/03/17 6.2 --10 ND ND ND ND ND ND NDug/L 10/03/17 6.2 --10 ND 34.5 (ND)ND ND ND ND NDug/L 05/22/18 6.2 --10 ND ND ND ND ND ND NDug/L 10/23/18 6.2 10 --ND ND ND ND ND ND ND ug/L 04/16/19 6.2 10 --ND ND ND ND ND ND NDug/L 10/15/19 6.2 10 --ND ND ND ND ND ND NDug/L 04/14/20 6.2 10 --ND ND ND ND ND ND NDug/L 10/07/20 6.2 10 --ND ND ND ND ND ND NDug/L 05/10/21 6.2 10 --ND ND ND ND ND ND NDug/L 10/06/21 6.2 10 --ND ND ND ND ND ND NDug/L 05/17/22 6.2 10 --ND ND ND ND ND ND NDug/L 10/10/22 10 20 --DRY ND ND ND ND ND NDug/L 05/22/23 10 20 --DRY ND ND ND ND ND NDSilverug/L 09/22/94 ----10 ND ND ND ND ND --NDNC 2L = 20 ug/L ug/L 11/08/94 ----10 ND ND ND ND ND --NDEPA MCL = 100 ug/L*ug/L 01/18/95 ----10 ND ND ND ND ND --ND ug/L 04/23/96 ----10 ND ND ND ND ND --NDug/L 06/17/97 ----10 ND ND ND ND ND --NDug/L 10/16/97 ----10 ND ND ND ND ND --NDug/L 04/21/98 ----10 ND ND ND ND ND --NDug/L 04/07/99 ----10 ND ND ND ND ND --NDug/L 10/13/99 ----10 ND ND ND ND ND --NDug/L 04/05/00 ----10 ND ND ND ND ND --NDug/L 10/25/00 ----10 ND ND ND ND ND --NDug/L 04/04/01 ----10 ND ND ND ND ND --NDug/L 04/08/02 ----10 ND ND ND ND ND --NDug/L 10/21/02 ----10 ND ND ND ND ND --NDug/L 04/14/03 ----10 ND ND ND ND ND --ND ug/L 10/01/03 ----10 ND ND ND ND ND --NDug/L 04/05/04 ----10 ND ND ND ND ND --NDug/L 10/18/04 ----10 ND ND ND ND ND --NDug/L 04/07/05 ----10 ND ND ND ND ND --NDug/L 10/06/05 ----10 ND ND ND ND ND --NDug/L 04/03/06 ----10 ND ND ND ND ND --NDug/L 10/03/06 ----10 ND ND ND ND ND --NDug/L 04/05/07 ----10 ND ND ND ND ND --NDug/L 10/18/07 ----10 0.6 J ND --ND ND --NDug/L 04/29/08 ----10 ND ND ND ND ND --NDug/L 10/23/08 ----10 ND ND ND ND ND --NDug/L 04/07/09 ----10 1.8 B 1.5 B ND 1.7 B 1.9 B --1.4 Jug/L 10/19/09 ----10 ND ND ND ND ND --ND ug/L 04/28/10 ----10 ND ND ND ND ND --NDug/L 10/12/10 ----10 ND ND ND ND ND --NDug/L 04/11/11 ----10 ND ND ND ND ND --NDug/L 10/04/11 ----10 ND ND ND ND ND --NDug/L 04/10/12 ----10 ND ND ND ND ND --NDug/L 10/15/12 ----10 ND ND ND ND ND --NDug/L 04/09/13 ----10 2.05 B 2.16 B ND ND 2.18 B --2.16 Jug/L 10/08/13 ----10 ND ND ND ND ND --NDug/L 04/08/14 ----10 3.21 B 2.56 B 2.48 B ND ND --3.31 Jug/L 10/08/14 1.9 --10 ND ND ND ND ND --2.42 Jug/L 04/08/15 1.9 --10 ND ND ND ND ND --NDug/L 10/28/15 1.9 --10 2.80 J ND ND ND ND ND ND ug/L 04/05/16 1.9 --10 ND ND ND ND ND ND NDug/L 10/04/16 1.9 --10 ND ND ND ND ND ND NDug/L 04/03/17 1.9 --10 3.03 J 2.12 J ND ND 2.63 J ND NDug/L 10/03/17 1.9 --10 ND ND ND ND ND ND NDug/L 05/22/18 1.9 --10 ND ND ND ND ND ND NDug/L 10/23/18 1.9 10 --ND ND ND ND ND ND ND ug/L 04/16/19 1.9 10 --ND ND ND ND ND ND NDug/L 10/15/19 1.9 10 --ND ND ND ND ND ND NDug/L 04/14/20 1.9 10 --ND ND ND ND ND ND NDug/L 10/07/20 1.9 10 --ND ND ND ND ND ND NDug/L 05/10/21 1.9 10 --ND ND ND ND ND ND NDug/L 10/06/21 1.9 10 --26.3 2.56 J ND ND ND ND NDug/L 05/17/22 1.9 10 --2.84 J ND ND ND ND ND ND ug/L 10/10/22 1.5 10 --DRY 3.30 J ND ND 1.50 J ND NDug/L 05/22/23 1.5 10 --DRY ND ND ND ND ND ND 6 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Thallium ug/L 09/22/94 ----10 ND ND ND ND ND --NDNC 2L = 2 ug/L ug/L 11/08/94 ----10 ND ND ND ND ND --NDEPA MCL = 2 ug/L ug/L 01/18/95 ----10 ND ND ND ND ND --NDug/L 04/23/96 ----10 ND ND ND ND ND --NDug/L 06/17/97 ----10 ND ND ND ND ND --NDug/L 10/16/97 ----10 ND ND ND ND ND --NDug/L 04/21/98 ----10 ND ND ND ND ND --NDug/L 04/07/99 ----10 ND ND ND ND ND --ND ug/L 10/13/99 ----10 ND ND ND ND ND --NDug/L 04/05/00 ----10 ND ND ND ND ND --NDug/L 10/25/00 ----10 ND ND ND ND ND --NDug/L 04/04/01 ----10 ND ND ND ND ND --NDug/L 04/08/02 ----10 ND ND ND ND ND --NDug/L 10/21/02 ----10 ND ND ND ND ND --NDug/L 04/14/03 ----10 ND ND ND ND ND --NDug/L 10/01/03 ----10 ND ND ND ND ND --NDug/L 04/05/04 ----10 ND ND ND ND ND --NDug/L 10/18/04 ----10 ND ND ND ND ND --NDug/L 04/07/05 ----10 ND ND ND ND ND --NDug/L 10/06/05 ----10 ND ND ND ND ND --ND ug/L 04/03/06 ----10 ND ND ND ND ND --NDug/L 10/03/06 ----10 ND ND ND ND ND --NDug/L 04/05/07 ----5 ND ND ND ND ND --NDug/L 10/18/07 ----5 ND ND --ND ND --NDug/L 04/29/08 ----5.5 ND ND ND ND ND --NDug/L 10/23/08 ----5.5 ND ND ND ND ND --NDug/L 04/07/09 ----5.5 0.036 B 0.045 B 0.063 B ND 0.037 B --0.052 Jug/L 10/19/09 ----5.5 ND ND ND ND ND --NDug/L 04/28/10 ----5.5 ND ND ND ND ND --NDug/L 10/12/10 ----5.5 ND ND ND ND ND --NDug/L 04/11/11 ----5.5 ND ND ND ND ND --NDug/L 10/04/11 ----5.5 ND ND ND ND ND --NDug/L 04/10/12 ----5.5 ND ND ND ND ND --ND ug/L 10/15/12 ----5.5 ND ND ND ND ND --NDug/L 04/09/13 ----5.5 ND ND ND ND ND --NDug/L 10/08/13 ----5.5 ND ND ND ND ND --NDug/L 04/08/14 ----5.5 ND ND ND ND ND --NDug/L 10/08/14 0.11 --5.5 ND ND ND ND ND --NDug/L 04/08/15 0.11 --5.5 ND ND ND 0.177 J ND --NDug/L 10/28/15 0.11 --5.5 ND ND ND ND ND ND NDug/L 04/05/16 0.11 --5.5 ND ND ND ND ND ND NDug/L 10/04/16 0.11 --5.5 ND ND ND ND ND ND NDug/L 04/03/17 0.11 --5.5 0.211 J 0.229 J 0.188 J 0.199 J 0.338 J 0.266 J NDug/L 10/03/17 0.11 --5.5 0.530 J 0.790 J 0.920 J 0.646 J 0.742 J 0.830 J NDug/L 05/22/18 0.11 --5.5 ND ND ND ND ND ND NDug/L 10/23/18 0.55 5 --ND ND ND ND ND ND ND ug/L 04/16/19 0.11 1 --ND ND ND ND ND ND NDug/L 10/15/19 0.22 2 --ND ND ND ND ND ND NDug/L 04/14/20 0.22 2 --ND ND ND ND ND ND NDug/L 10/07/20 0.22 2 --ND ND ND ND ND ND NDug/L 05/10/21 0.22 2 --ND ND ND ND ND ND NDug/L 10/06/21 0.22 2 --ND ND ND ND ND ND NDug/L 05/17/22 0.22 2 --ND ND ND ND ND ND NDug/L 10/10/22 0.26 1 --DRY ND ND ND ND ND NDug/L 05/22/23 0.26 1 --DRY ND ND ND ND ND NDTin ug/L 09/22/94 ----100 ND ND ND ND ND --NDNC 2L = 2000 ug/L ug/L 11/08/94 ----100 ND ND ND ND ND --ND(No EPA MCL)ug/L 01/18/95 ----100 ND ND ND ND ND --ND ug/L 04/23/96 ----100 ND ND ND ND ND --NDug/L 06/17/97 ----100 ND ND ND ND ND --NDug/L 10/16/97 ----100 ND ND ND ND ND --NDug/L 04/21/98 ----100 ND ND ND ND ND --NDug/L 04/07/99 ----100 ND ND ND ND ND --NDug/L 10/13/99 ----100 ND ND ND ND ND --NDug/L 04/05/00 ----100 ND ND ND ND ND --NDug/L 10/25/00 ----100 ND ND ND ND ND --NDug/L 04/04/01 ----100 414 282 ND 249 163 --NDug/L 04/08/02 ----100 360 336 ND 171 145 --NDug/L 10/21/02 ----100 ND ND ND ND ND --NDug/L 04/14/03 ----100 117 ND ND ND ND --ND ug/L 10/01/03 ----100 ND ND ND ND ND --NDug/L 04/05/04 ----100 176 ND ND ND ND --NDug/L 10/18/04 ----100 ND ND ND ND ND --NDug/L 04/07/05 ----100 ND ND ND ND ND --NDug/L 10/06/05 ----100 ND ND ND ND ND --NDug/L 04/03/06 ----100 ND ND ND ND ND --NDug/L 10/03/06 ----100 ND ND ND ND ND --NDug/L 04/05/07 ----100 ND ND ND ND ND --NDug/L 04/29/08 ----100 2.5 J ND 2.4 J ND ND --NDug/L 04/07/09 ----100 ND ND ND ND ND --NDug/L 04/28/10 ----100 4.96 J 3.98 J ND 3.37 J 5.49 J --NDug/L 04/11/11 ----100 4.46 J ND 2.20 J 2.63 J 4.04 J --NDug/L 04/10/12 ----100 5.12 J ND ND 3.24 J 3.80 J --ND ug/L 04/09/13 ----100 5.08 J ND ND ND 3.15 J --NDug/L 04/08/14 ----100 ND ND ND ND ND --NDug/L 04/08/15 12 --100 ND ND ND ND ND --NDug/L 04/05/16 2.4 --100 ND ND ND ND ND ND 3.18 Jug/L 04/03/17 2.4 --100 8.13 J ND ND 4.52 J ND ND NDug/L 05/22/18 2.4 --100 ND ND 2.40 J ND ND ND NDug/L 04/16/19 2.9 10 --ND ND ND ND ND ND NDug/L 04/14/20 2.9 10 --ND ND ND ND ND ND NDug/L 05/10/21 2.9 10 --ND ND ND ND 14.5 (ND)ND NDug/L 05/17/22 2.9 10 --ND ND ND ND ND ND ND 7 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Vanadium ug/L 09/22/94 ----40 ND ND ND 48 ND --NDNC 2L = 7 ug/L ug/L 11/08/94 ----40 ND ND ND ND ND --ND(No EPA MCL)ug/L 01/18/95 ----40 ND ND ND ND ND --NDug/L 04/23/96 ----40 ND ND ND ND ND --NDug/L 06/17/97 ----40 ND ND ND 84 ND --NDug/L 10/16/97 ----40 ND ND ND ND ND --NDug/L 04/21/98 ----40 ND ND ND ND ND --NDug/L 04/07/99 ----40 ND 94 ND ND ND --ND ug/L 10/13/99 ----40 ND 210 ND ND ND --NDug/L 04/05/00 ----40 ND 94 ND ND ND --NDug/L 10/25/00 ----40 ND 295 76 54 ND --NDug/L 04/04/01 ----40 ND 206 ND 91 ND --NDug/L 04/08/02 ----40 ND ND ND ND ND --NDug/L 10/21/02 ----40 ND 155 ND ND ND --NDug/L 04/14/03 ----40 ND ND ND ND ND --NDug/L 10/01/03 ----40 ND 56 ND 86 ND --NDug/L 04/05/04 ----40 ND ND ND ND 76 --NDug/L 10/18/04 ----40 ND 41 ND ND ND --NDug/L 04/07/05 ----40 ND 57 ND ND ND --NDug/L 10/06/05 ----40 ND 62 ND ND ND --ND ug/L 04/03/06 ----40 ND 72 ND ND ND --NDug/L 10/03/06 ----40 ND ND ND ND ND --NDug/L 04/05/07 ----40 ND ND ND ND ND --NDug/L 10/18/07 ----25 3.2 J 21.6 J --ND 1.5 J --NDug/L 04/29/08 ----25 10.3 J 5.9 J ND ND ND --NDug/L 10/23/08 ----25 ND ND ND ND ND --NDug/L 04/07/09 ----25 3.9 J 3.6 J ND ND 0.7 J --NDug/L 10/19/09 ----25 5.12 J ND ND ND 2.26 J --NDug/L 04/28/10 ----25 4.42 J 2.65 J ND ND ND --NDug/L 10/12/10 ----25 4.33 J 2.25 J ND 1.54 J 2.73 J --NDug/L 04/11/11 ----25 4.13 J 1.88 J ND ND 1.89 J --NDug/L 10/04/11 ----25 4.16 J ND ND ND 8.31 J --NDug/L 04/10/12 ----25 4.34 J 1.99 J ND ND ND --ND ug/L 10/15/12 ----25 3.95 J ND 6.47 J ND 2.37 J --NDug/L 04/09/13 ----25 3.88 J 5.41 J ND ND 1.89 J --NDug/L 10/08/13 ----25 4.50 J ND ND ND 2.92 J --NDug/L 04/08/14 ----25 5.11 J 3.68 J ND ND ND --NDug/L 10/08/14 1.4 --25 5.04 J 2.47 J ND ND 4.16 J --NDug/L 04/08/15 1.4 --25 3.99 J ND ND ND ND --NDug/L 10/28/15 1.4 --25 4.19 J ND ND ND 4.53 J ND NDug/L 04/05/16 1.4 --25 5.51 J 1.99 J ND ND ND ND NDug/L 10/04/16 1.4 --25 5.23 J 3.30 J ND ND ND ND NDug/L 04/03/17 1.4 --25 4.72 J ND ND ND ND ND NDug/L 10/03/17 1.4 --25 3.54 J 1.79 J ND ND 2.91 J ND NDug/L 05/22/18 1.4 --25 5.33 J 3.61 J 1.95 J 1.72 J 1.45 J ND NDug/L 10/23/18 1.4 10 --3.11 J 1.42 J ND ND ND ND ND ug/L 04/16/19 1.4 10 --3.90 J ND ND ND ND ND NDug/L 10/15/19 1.4 10 --4.40 J 3.11 J ND ND 4.48 J ND NDug/L 04/14/20 1.4 10 --5.38 J ND ND ND ND ND NDug/L 10/07/20 1.4 10 --2.63 J ND ND ND ND ND NDug/L 05/10/21 1.4 10 --3.46 J ND ND ND ND ND NDug/L 10/06/21 1.4 10 --ND ND ND ND ND ND NDug/L 05/17/22 1.4 10 --ND ND 1.86 J ND ND ND NDug/L 10/10/22 1 10 --DRY 1.70 J 1.00 J ND 2.30 J ND NDug/L 05/22/23 1 10 --DRY 3.28 J ND ND 1.83 J ND NDZincug/L 09/22/94 ----50 ND 67 59 ND ND --NDNC 2L = 1000 ug/L ug/L 11/08/94 ----50 ND ND ND ND ND --NDEPA MCL = 5000 ug/L*ug/L 01/18/95 ----50 ND ND ND ND ND --ND ug/L 04/23/96 ----50 ND ND ND ND ND --NDug/L 06/17/97 ----50 52 B 93 B 112 B 527 86 B --72ug/L 10/16/97 ----50 ND ND 127 227 ND --NDug/L 04/21/98 ----50 ND ND ND ND ND --NDug/L 04/07/99 ----50 ND ND ND ND ND --NDug/L 10/13/99 ----50 ND 144 55 135 ND --NDug/L 04/05/00 ----50 ND 64 ND 143 ND --NDug/L 10/25/00 ----50 ND 193 127 185 ND --NDug/L 04/04/01 ----50 ND 110 ND 284 ND --NDug/L 04/08/02 ----50 ND 226 ND 234 ND --NDug/L 10/21/02 ----50 ND 61 ND 72 ND --NDug/L 04/14/03 ----50 ND 111 ND ND ND --ND ug/L 10/01/03 ----50 ND 53 53 323 ND --NDug/L 04/05/04 ----50 ND ND ND ND ND --NDug/L 10/18/04 ----50 ND 175 ND 94 51 --NDug/L 04/07/05 ----50 ND 113 88 97 ND --NDug/L 10/06/05 ----50 ND 132 74 146 ND --NDug/L 04/03/06 ----50 ND 113 ND ND 50 --NDug/L 10/03/06 ----50 ND ND ND ND ND --NDug/L 04/05/07 ----10 ND 14 ND ND ND --NDug/L 10/18/07 ----10 6.9 B 33 --8.7 J 6.8 B --1.5 Jug/L 04/29/08 ----10 16.7 B 4.3 B 8.8 B 5.3 B 1.0 B --122ug/L 10/23/08 ----10 4.5 J ND ND ND ND --NDug/L 04/07/09 ----10 8.2 B 5.4 B 7.5 B ND ND --4.2 Jug/L 10/19/09 ----10 9.69 J 7.40 J 8.17 J ND ND --ND ug/L 04/28/10 ----10 6.46 J 5.76 J 10.4 ND ND --NDug/L 10/12/10 ----10 6.37 J 6.24 J 5.90 J 4.65 J ND --NDug/L 04/11/11 ----10 17.4 3.88 J 6.94 J 5.96 J 7.76 J --NDug/L 10/04/11 ----10 14.2 ND 11.6 ND ND --NDug/L 04/10/12 ----10 6.09 J 5.35 J 7.32 J ND ND --NDug/L 10/15/12 ----10 5.95 J 6.33 J 21.3 ND ND --NDug/L 04/09/13 ----10 7.25 J ND 6.94 J 4.09 J ND --NDug/L 10/08/13 ----10 4.17 J 5.51 J 9.56 J ND ND --NDug/L 04/08/14 ----10 6.49 J ND 6.39 J ND ND --NDug/L 10/08/14 3.8 --10 9.39 J 11.7 12.4 5.99 J ND --NDug/L 04/08/15 3.8 --10 4.49 J ND 9.80 J ND ND --NDug/L 10/28/15 3.8 --10 7.53 J ND 7.40 J ND ND 12.4 ND ug/L 04/05/16 4.4 --10 ND ND 4.46 J ND ND 11.4 NDug/L 10/04/16 4.4 --10 8.61 J 8.84 J 7.75 J ND ND 12.8 NDug/L 04/03/17 4.4 --10 ND ND ND ND ND 10.3 NDug/L 10/03/17 4.4 --10 ND ND 6.48 J ND ND 13.2 NDug/L 05/22/18 4.4 --10 ND ND 8.91 J ND ND 10.2 NDug/L 10/23/18 4.4 10 --4.93 J 11.3 7.76 J ND ND 13.2 ND ug/L 04/16/19 4.4 10 --ND 5.23 J 8.07 J ND ND 10.8 NDug/L 10/15/19 4.4 10 --8.28 J 17.4 12.6 ND ND 13.4 NDug/L 04/14/20 4.4 10 --ND ND 10.2 ND ND 10.7 NDug/L 10/07/20 4.4 10 --5.08 J 23.1 7.26 J ND ND 18.6 NDug/L 05/10/21 4.4 10 --ND ND 6.48 J ND ND 10.5 NDug/L 10/06/21 4.4 10 --10.2 32.4 9.03 J ND ND 13.0 NDug/L 05/17/22 4.4 10 --23.4 31.7 8.78 J ND ND 12.7 ND ug/L 10/10/22 8.7 20 --DRY ND ND ND ND 14.0 J NDug/L 05/22/23 8.7 20 --DRY ND ND ND ND 9.9 J ND 8 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Acetone ug/L 09/22/94 ----100 ND ND ND ND ND --NDNC 2L = 6000 ug/L ug/L 11/08/94 ----100 ND ND ND ND ND --ND(No EPA MCL)ug/L 01/18/95 ----100 ND ND ND ND ND --NDug/L 04/23/96 ----100 ND ND ND ND ND --NDug/L 06/17/97 ----100 ND ND ND ND ND --NDug/L 10/16/97 ----100 ND ND ND ND ND --NDug/L 04/21/98 ----100 ND ND ND ND ND --NDug/L 04/07/99 ----100 ND ND ND ND ND --ND ug/L 10/13/99 ----100 ND ND ND ND ND --NDug/L 04/05/00 ----100 ND ND ND ND ND --NDug/L 10/25/00 ----100 ND ND ND ND ND --NDug/L 04/04/01 ----100 ND ND ND ND ND --NDug/L 04/08/02 ----100 ND ND ND ND ND --NDug/L 10/21/02 ----100 ND ND ND ND ND --NDug/L 04/14/03 ----100 ND ND ND ND ND --NDug/L 10/01/03 ----100 ND ND ND ND ND --NDug/L 04/05/04 ----100 ND ND ND ND ND --NDug/L 10/18/04 ----100 ND ND ND ND ND --NDug/L 04/07/05 ----100 ND ND ND ND ND --NDug/L 10/06/05 ----100 ND ND ND ND ND --ND ug/L 04/03/06 ----100 ND ND ND ND ND --NDug/L 10/03/06 ----100 ND ND ND ND ND --NDug/L 04/05/07 ----100 ND ND ND ND ND --NDug/L 10/18/07 ----100 ND 1.3 J --ND ND --NDug/L 04/29/08 ----100 ND ND ND ND ND --2.7 Jug/L 10/23/08 ----100 ND 4.3 B 5.1 B 4.6 B 4.2 B --5.3 Jug/L 04/07/09 ----100 ND ND ND ND ND --NDug/L 10/19/09 ----100 ND ND ND ND ND --8.2 Jug/L 04/28/10 ----100 ND ND ND ND ND --NDug/L 10/12/10 ----100 ND ND ND ND ND --NDug/L 04/11/11 ----100 ND ND ND ND ND --NDug/L 10/04/11 ----100 ND ND ND ND ND ND NDug/L 04/10/12 ----100 ND ND ND ND ND --ND ug/L 10/15/12 ----100 ND ND ND ND ND --NDug/L 04/09/13 ----100 ND ND ND ND ND --NDug/L 10/08/13 ----100 ND ND ND ND ND --NDug/L 04/08/14 ----100 ND ND ND ND ND --NDug/L 10/08/14 1.2 --100 ND ND ND ND ND --NDug/L 04/08/15 1.2 --100 ND ND ND ND ND --NDug/L 10/28/15 1.2 --100 ND ND ND ND ND ND NDug/L 04/05/16 1.2 --100 ND ND ND ND ND ND NDug/L 10/04/16 10 --100 ND ND ND ND ND ND NDug/L 04/03/17 10 --100 ND ND ND ND ND ND NDug/L 10/03/17 10 --100 ND ND ND ND ND ND NDug/L 05/22/18 10 --100 ND ND ND ND ND ND NDug/L 10/23/18 10 20 --ND ND ND ND ND ND ND ug/L 04/16/19 10 20 --ND ND ND ND ND ND NDug/L 10/15/19 10 20 --ND ND ND ND ND ND NDug/L 04/14/20 10 20 --ND ND ND ND ND ND NDug/L 10/07/20 10 20 --ND ND ND ND ND ND NDug/L 05/10/21 10 20 --ND ND ND ND ND ND NDug/L 10/06/21 10 20 --ND ND ND ND ND ND 23ug/L 05/17/22 10 20 --ND ND ND ND ND ND NDug/L 10/10/22 3.7 10 --DRY ND ND ND ND ND NDug/L 05/22/23 10 20 --DRY ND ND ND ND ND NDAcetonitrileug/L 09/22/94 ----100 ND ND ND ND ND --ND(No NC 2L or IMAC)ug/L 11/08/94 ----100 ND ND ND ND ND --ND(No EPA MCL)ug/L 01/18/95 ----100 ND ND ND ND ND --ND ug/L 04/23/96 ----100 ND ND ND ND ND --NDug/L 06/17/97 ----100 ND ND ND ND ND --NDug/L 10/16/97 ----100 ND ND ND ND ND --NDug/L 04/21/98 ----100 ND ND ND ND ND --NDug/L 04/07/99 ----100 ND ND ND ND ND --NDug/L 10/13/99 ----100 ND ND ND ND ND --NDug/L 04/05/00 ----100 ND ND ND ND ND --NDug/L 10/25/00 ----100 ND ND ND ND ND --NDug/L 04/04/01 ----100 ND ND ND ND ND --NDug/L 04/08/02 ----100 ND ND ND ND ND --NDug/L 10/21/02 ----100 ND ND ND ND ND --NDug/L 04/14/03 ----100 ND ND ND ND ND --ND ug/L 10/01/03 ----100 ND ND ND ND ND --NDug/L 04/05/04 ----100 ND ND ND ND ND --NDug/L 10/18/04 ----100 ND ND ND ND ND --NDug/L 04/07/05 ----100 ND ND ND ND ND --NDug/L 10/06/05 ----100 ND ND ND ND ND --NDug/L 04/03/06 ----100 ND ND ND ND ND --NDug/L 10/03/06 ----100 ND ND ND ND ND --NDug/L 04/05/07 ----50 ND ND ND ND ND --NDug/L 10/18/07 ----50 ND ND --ND ND --22.6 Jug/L 04/29/08 ----55 ND ND ND ND ND --NDug/L 10/23/08 --------------------ug/L 04/07/09 ----55 ND ND ND ND ND --NDug/L 04/28/10 ----55 ND ND ND ND ND --ND ug/L 04/11/11 ----55 ND ND ND ND ND --NDug/L 04/10/12 ----55 ND ND ND ND ND --NDug/L 04/09/13 ----55 ND ND ND ND ND --NDug/L 04/08/14 ----55 ND ND ND ND ND --NDug/L 04/08/15 100 --55 ND ND ND ND ND --NDug/L 04/05/16 5.0 --55 ND ND ND ND ND ND NDug/L 04/03/17 5.0 --55 ND ND ND ND ND ND NDug/L 05/22/18 5.0 --55 ND ND ND ND ND ND NDug/L 04/16/19 5.0 10 --ND ND ND ND ND ND NDug/L 04/14/20 5.0 10 --ND ND ND ND ND ND NDug/L 05/10/21 5.0 10 --ND ND ND ND ND ND NDug/L 05/17/22 5.0 10 --ND ND ND ND ND ND ND 9 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Benzene ug/L 09/22/94 ----5 ND ND ND ND ND --NDNC 2L = 1 ug/L ug/L 11/08/94 ----5 ND ND ND ND ND --NDEPA MCL = 5 ug/L ug/L 01/18/95 ----5 ND ND ND ND ND --NDug/L 04/23/96 ----5 ND ND ND ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --NDug/L 10/16/97 ----5 ND ND ND ND ND --NDug/L 04/21/98 ----5 ND ND ND ND ND --NDug/L 04/07/99 ----5 ND ND ND ND ND --ND ug/L 10/13/99 ----5 ND ND ND ND ND --NDug/L 04/05/00 ----5 ND ND ND ND ND --NDug/L 10/25/00 ----5 ND ND ND ND ND --NDug/L 04/04/01 ----5 ND ND ND ND ND --NDug/L 04/08/02 ----5 ND ND ND ND ND --NDug/L 10/21/02 ----5 ND ND ND ND ND --NDug/L 04/14/03 ----5 ND ND ND ND ND --NDug/L 10/01/03 ----5 ND ND ND ND ND --NDug/L 04/05/04 ----5 ND ND ND ND ND --NDug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ----------ug/L 10/06/05 ----5 ND ND ND ND ND --ND ug/L 04/03/06 ----5 ND ND ND ND ND --NDug/L 10/03/06 ----5 ND ND ND ND ND --NDug/L 04/05/07 ----3 ND ND ND ND ND --NDug/L 10/18/07 ----1 ND ND --ND ND --NDug/L 04/29/08 ----1 ND ND 0.78 J ND ND --NDug/L 10/23/08 ----1 ND ND 1.8 ND ND --NDug/L 04/07/09 ----1 ND ND ND ND ND --NDug/L 10/19/09 ----1 ND ND 1.9 ND ND --NDug/L 04/28/10 ----1 ND ND 1.3 ND ND --NDug/L 10/12/10 ----1 ND ND 2.0 ND ND --NDug/L 04/11/11 ----1 ND ND 1.3 ND ND --NDug/L 10/04/11 ----1 ND ND 2.0 ND ND ND NDug/L 04/10/12 ----1 ND ND 1.3 ND ND --ND ug/L 10/15/12 ----1 ND ND 1.9 ND ND --NDug/L 04/09/13 ----1 ND ND 1.3 ND ND --NDug/L 10/08/13 ----1 ND ND 1.4 ND ND --NDug/L 04/08/14 ----1 ND ND 1.1 ND ND --NDug/L 10/08/14 0.15 --1 ND ND 1.4 ND ND --NDug/L 04/08/15 0.15 --1 ND ND 0.58 J ND ND --NDug/L 10/28/15 0.15 --1 ND ND 1.4 ND ND ND NDug/L 04/05/16 0.15 --1 ND ND 0.87 J ND ND ND NDug/L 10/04/16 0.15 --1 ND ND 1.4 ND ND ND NDug/L 04/03/17 0.15 --1 ND ND 1.4 ND ND ND NDug/L 10/03/17 0.15 --1 ND ND 1.3 ND ND ND NDug/L 05/22/18 0.15 --1 ND ND 1.0 ND ND ND NDug/L 10/23/18 0.15 1 --ND ND 1.0 ND ND 0.95 J ND ug/L 04/16/19 0.15 1 --ND ND 0.89 J ND ND 0.44 J NDug/L 10/15/19 0.15 1 --ND ND 1.0 ND ND 1.2 NDug/L 04/14/20 0.15 1 --ND ND 0.54 J ND ND ND NDug/L 10/07/20 0.15 1 --ND ND 0.66 J ND ND 0.68 J NDug/L 05/10/21 0.15 1 --ND ND ND ND ND 0.50 J NDug/L 10/06/21 0.15 1 --ND ND 0.65 J ND ND 0.95 J NDug/L 05/17/22 0.15 1 --ND ND 0.49 J ND ND ND NDug/L 10/10/22 0.27 1 --DRY ND 0.67 J ND ND 0.75 J NDug/L 05/22/23 0.15 1.0 --DRY ND 0.507 J ND ND 0.84 J NDChlorobenzeneug/L 09/22/94 ----5 ND ND ND ND ND --NDNC 2L = 50 ug/L ug/L 11/08/94 ----5 ND ND ND ND ND --NDEPA MCL = 100 ug/L ug/L 01/18/95 ----5 ND ND ND ND ND --ND ug/L 04/23/96 ----5 ND ND ND ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --NDug/L 10/16/97 ----5 ND ND ND ND ND --NDug/L 04/21/98 ----5 ND ND ND ND ND --NDug/L 04/07/99 ----5 ND ND ND ND ND --NDug/L 10/13/99 ----5 ND ND ND ND ND --NDug/L 04/05/00 ----5 ND ND ND ND ND --NDug/L 10/25/00 ----5 ND ND ND ND ND --NDug/L 04/04/01 ----5 ND ND ND ND ND --NDug/L 04/08/02 ----5 ND ND ND ND ND --NDug/L 10/21/02 ----5 ND ND ND ND ND --NDug/L 04/14/03 ----5 ND ND ND ND ND --ND ug/L 10/01/03 ----5 ND ND ND ND ND --NDug/L 04/05/04 ----5 ND ND ND ND ND --NDug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ND ND ND --NDug/L 10/06/05 ----5 ND ND ND ND ND --NDug/L 04/03/06 ----5 ND ND ND ND ND --NDug/L 10/03/06 ----5 ND ND ND ND ND --NDug/L 04/05/07 ----3 ND ND ND ND ND --NDug/L 10/18/07 ----3 ND ND --ND ND --NDug/L 04/29/08 ----3 ND ND 1.0 J ND ND --NDug/L 10/23/08 ----3 ND ND 2.5 J ND ND --NDug/L 04/07/09 ----3 ND ND 0.84 J ND ND --NDug/L 10/19/09 ----3 ND ND 2.7 J ND ND --ND ug/L 04/28/10 ----3 ND ND 1.3 J ND ND --NDug/L 10/12/10 ----3 ND ND 2.6 J ND ND --NDug/L 04/11/11 ----3 ND ND 1.5 J ND ND --NDug/L 10/04/11 ----3 ND ND 2.7 J ND ND ND NDug/L 04/10/12 ----3 ND ND 1.3 J ND ND --NDug/L 10/15/12 ----3 ND ND 2.6 J ND ND --NDug/L 04/09/13 ----3 ND ND 1.5 J ND ND --NDug/L 10/08/13 ----3 ND ND 1.7 J ND ND --NDug/L 04/08/14 ----3 ND ND ND ND ND --NDug/L 10/08/14 0.17 --3 ND ND 1.4 J ND ND --NDug/L 04/08/15 0.17 --3 ND ND 0.64 J ND ND --NDug/L 10/28/15 0.17 --3 ND 0.76 J 1.7 J ND 0.62 J ND ND ug/L 04/05/16 0.17 --3 ND ND 0.85 J ND ND ND NDug/L 10/04/16 0.17 --3 ND ND 2.1 J ND ND ND NDug/L 04/03/17 0.17 --3 ND ND 1.7 J ND ND ND NDug/L 10/03/17 0.17 --3 ND ND 2.1 J ND ND ND NDug/L 05/22/18 0.17 --3 ND ND 1.2 J ND ND ND NDug/L 10/23/18 0.17 1 --ND ND 1.4 ND ND ND ND ug/L 04/16/19 0.17 1 --ND ND 0.91 J ND ND ND NDug/L 10/15/19 0.17 1 --ND ND 1.5 ND ND ND NDug/L 04/14/20 0.17 1 --ND ND 0.59 J ND ND ND NDug/L 10/07/20 0.17 1 --ND ND 1.2 ND ND ND NDug/L 05/10/21 0.17 1 --ND ND ND ND ND ND NDug/L 10/06/21 0.17 1 --ND ND ND ND ND ND NDug/L 05/17/22 0.17 1 --ND ND ND ND ND ND ND ug/L 10/10/22 0.15 1 --DRY ND 1.5 ND ND ND NDug/L 05/22/23 0.17 1 --DRY ND 1.07 ND ND ND ND 10 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Chloroethane ug/L 09/22/94 ----10 ND ND ND ND ND --NDNC 2L = 3000 ug/L ug/L 11/08/94 ----10 ND ND ND ND ND --ND(No EPA MCL)ug/L 01/18/95 ----10 ND ND ND ND ND --NDug/L 04/23/96 ----10 ND ND 38 ND ND --NDug/L 06/17/97 ----10 ND ND ND ND ND --NDug/L 10/16/97 ----10 ND ND ND ND ND --NDug/L 04/21/98 ----10 ND ND ND ND ND --NDug/L 04/07/99 ----10 ND ND ND ND ND --ND ug/L 10/13/99 ----10 ND ND ND ND ND --NDug/L 04/05/00 ----10 ND ND ND ND ND --NDug/L 10/25/00 ----10 ND ND ND ND ND --NDug/L 04/04/01 ----10 ND ND 15 ND ND --NDug/L 04/04/02 ----10 ND ND ND ND ND --NDug/L 10/21/02 ----10 ND ND 10.2 ND ND --NDug/L 04/14/03 ----10 ND ND ND ND ND --NDug/L 10/01/03 ----10 ND ND ND ND ND --NDug/L 04/05/04 ----10 ND ND ND ND ND --NDug/L 10/18/04 ----10 ND ND ND ND ND --NDug/L 04/07/05 ----10 ND ND --------NDug/L 10/06/05 ----10 ND ND ND ND ND --ND ug/L 04/03/06 ----10 ND ND ND ND ND --NDug/L 10/03/06 ----10 ND ND ND ND ND --NDug/L 04/05/07 ----10 ND ND ND ND ND --NDug/L 10/18/07 ----10 ND ND --ND 0.4 J --NDug/L 04/29/08 ----10 ND ND 3.1 J ND ND --NDug/L 10/23/08 ----10 ND ND 7.2 J ND ND --NDug/L 04/07/09 ----10 ND ND 3.1 J ND 0.91 J --NDug/L 10/19/09 ----10 ND ND 3.4 J ND ND --NDug/L 04/28/10 ----10 ND 0.75 J 3.4 J ND ND --NDug/L 10/12/10 ----10 ND ND 5.3 J ND ND --NDug/L 04/11/11 ----10 ND ND ND ND ND --NDug/L 10/04/11 ----10 ND ND 7.3 J ND ND 3.4 J NDug/L 04/10/12 ----10 ND ND 1.5 J ND ND --ND ug/L 10/15/12 ----10 ND ND 3.5 J ND ND --NDug/L 04/09/13 ----10 ND ND ND ND ND --NDug/L 10/08/13 ----10 ND ND 3.7 J ND ND --NDug/L 04/08/14 ----10 ND ND 3.8 J ND ND --NDug/L 10/08/14 0.23 --10 ND ND 2.5 J ND ND --NDug/L 04/08/15 0.23 --10 ND ND ND ND ND --NDug/L 10/28/15 0.23 --10 ND ND 4.1 J ND ND 3.8 J NDug/L 04/05/16 0.23 --10 ND ND 2.4 J ND ND 1.5 J NDug/L 10/04/16 0.23 --10 ND ND 2.7 J ND ND 1.2 J NDug/L 04/03/17 0.23 --10 ND ND 3.6 J ND ND 2.9 J NDug/L 10/03/17 0.23 --10 ND ND 3.1 J ND ND 2.0 J NDug/L 05/22/18 0.23 --10 ND ND ND ND ND ND NDug/L 10/23/18 0.23 1 --ND ND 1.4 ND ND 1.5 ND ug/L 04/16/19 0.23 1 --ND ND 1.6 ND ND 1.3 NDug/L 10/15/19 0.23 1 --ND ND 1.9 ND ND 1.6 NDug/L 04/14/20 0.23 1 --ND ND ND ND ND ND NDug/L 10/07/20 0.23 1 --ND ND ND ND ND ND NDug/L 05/10/21 0.23 1 --ND ND ND ND ND ND NDug/L 10/06/21 0.23 1 --ND ND ND ND ND ND NDug/L 05/17/22 0.23 1 --ND ND ND ND ND ND NDug/L 10/10/22 4.6 5 --DRY ND ND ND ND ND NDug/L 05/22/23 0.23 1 --DRY ND 0.791 J ND ND 0.879 J NDChloroformug/L 09/22/94 ----5 ND ND ND ND ND --NDNC 2L = 70 ug/L ug/L 11/08/94 ----5 ND ND ND ND ND --NDEPA MCL = 80 ug/L ug/L 01/18/95 ----5 ND ND ND ND ND --ND ug/L 04/23/96 ----5 ND ND ND ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --NDug/L 10/16/97 ----5 ND ND ND ND ND --NDug/L 04/21/98 ----5 ND ND ND ND ND --NDug/L 04/07/99 ----5 ND ND ND ND ND --NDug/L 10/13/99 ----5 ND ND ND ND ND --NDug/L 04/05/00 ----5 ND ND ND ND ND --NDug/L 10/25/00 ----5 ND ND ND ND ND --NDug/L 04/04/01 ----5 ND ND ND ND ND --NDug/L 04/04/02 ----5 ND ND ND ND ND --NDug/L 10/21/02 ----5 ND ND ND ND ND --NDug/L 04/14/03 ----5 ND ND ND ND ND --ND ug/L 10/01/03 ----5 ND ND ND ND ND --NDug/L 04/05/04 ----5 ND ND ND ND ND --NDug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ND ND ND --NDug/L 10/06/05 ----5 ND ND ND ND ND --NDug/L 04/03/06 ----5 ND ND ND ND ND --NDug/L 10/03/06 ----5 ND ND ND ND ND --NDug/L 04/05/07 ----5 ND ND ND ND ND --NDug/L 10/18/07 ----5 ND ND --ND ND --NDug/L 04/29/08 ----5 ND ND ND ND ND --NDug/L 10/23/08 ----5 ND ND ND ND ND --NDug/L 04/07/09 ----5 ND ND ND ND ND --NDug/L 10/19/09 ----5 ND ND ND ND ND --ND ug/L 04/28/10 ----5 ND ND ND ND ND --NDug/L 10/12/10 ----5 ND ND ND ND ND --NDug/L 04/11/11 ----5 ND ND ND ND ND --NDug/L 10/04/11 ----5 ND ND ND ND ND ND NDug/L 04/10/12 ----5 ND ND ND ND ND --NDug/L 10/15/12 ----5 ND ND ND ND ND --NDug/L 04/09/13 ----5 ND ND ND ND ND --NDug/L 10/08/13 ----5 ND ND ND ND ND --NDug/L 04/08/14 ----5 ND ND ND ND ND --NDug/L 10/08/14 0.18 --5 ND ND ND ND ND --NDug/L 04/08/15 0.18 --5 ND ND ND ND ND --NDug/L 10/28/15 0.18 --5 ND ND ND ND ND ND ND ug/L 04/05/16 0.18 --5 ND ND ND ND ND ND NDug/L 10/04/16 0.18 --5 ND ND ND ND ND ND NDug/L 04/03/17 0.18 --5 ND ND ND ND ND ND NDug/L 10/03/17 0.18 --5 ND ND ND ND ND ND NDug/L 05/22/18 0.18 --5 ND ND ND ND ND ND NDug/L 10/23/18 0.18 1 --ND ND ND ND ND ND ND ug/L 04/16/19 0.18 1 --ND ND ND ND ND ND NDug/L 10/15/19 0.18 1 --ND ND ND ND ND ND NDug/L 04/14/20 0.18 1 --ND ND ND ND ND ND NDug/L 10/07/20 0.18 1 --ND ND ND ND ND ND NDug/L 05/10/21 0.18 1 --ND ND ND ND ND ND NDug/L 10/06/21 0.18 1 --ND ND ND ND ND ND NDug/L 05/17/22 0.18 1 --ND ND ND ND ND ND ND ug/L 10/10/22 0.27 1 --DRY ND ND ND ND ND NDug/L 05/22/23 0.18 1 --DRY ND ND 0.181 B ND ND 0.205 J 11 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit 1,4-Dichlorobenzene ug/L 09/22/94 ----5 ND ND ND ND ND --NDNC 2L = 6 ug/L ug/L 11/08/94 ----5 ND ND ND ND ND --NDEPA MCL = 75 ug/L ug/L 01/18/95 ----5 ND ND ND ND ND --NDug/L 04/23/96 ----5 ND ND ND ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --NDug/L 10/16/97 ----5 ND ND ND ND ND --NDug/L 04/21/98 ----5 ND ND ND ND ND --NDug/L 04/07/99 ----5 ND ND ND ND ND --ND ug/L 10/13/99 ----5 ND ND ND ND ND --NDug/L 04/05/00 ----5 ND ND ND ND ND --NDug/L 10/25/00 ----5 ND ND ND ND ND --NDug/L 04/04/01 ----5 ND ND ND ND ND --NDug/L 04/04/02 ----5 ND ND ND ND ND --NDug/L 10/21/02 ----5 ND ND ND ND ND --NDug/L 04/14/03 ----5 ND ND ND ND ND --NDug/L 10/01/03 ----5 ND ND ND ND ND --NDug/L 04/05/04 ----5 ND ND ND ND ND --NDug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ND ND ND --NDug/L 10/06/05 ----5 ND ND ND ND ND --ND ug/L 04/03/06 ----5 ND ND ND ND ND --NDug/L 10/03/06 ----5 ND ND ND ND ND --NDug/L 04/05/07 ----3 ND ND ND ND ND --NDug/L 10/18/07 ----1 ND ND --ND ND --NDug/L 04/29/08 ----1 ND ND ND ND ND --NDug/L 10/23/08 ----1 ND ND ND ND ND --NDug/L 04/07/09 ----1 ND ND ND ND ND --NDug/L 10/19/09 ----1 ND ND ND ND ND --NDug/L 04/28/10 ----1 ND ND 0.67 J ND ND --NDug/L 10/12/10 ----1 ND ND ND ND ND --NDug/L 04/11/11 ----1 ND ND ND ND ND --NDug/L 10/04/11 ----1 ND ND 1.0 ND ND ND NDug/L 04/10/12 ----1 ND ND ND ND ND --ND ug/L 10/15/12 ----1 ND ND ND ND ND --NDug/L 04/09/13 ----1 ND ND 0.84 J ND ND --NDug/L 10/08/13 ----1 ND ND 0.67 J ND ND --NDug/L 04/08/14 ----1 ND ND ND ND ND --NDug/L 10/08/14 0.19 --1 ND ND ND ND ND --NDug/L 04/08/15 0.19 --1 ND ND ND ND ND --NDug/L 10/28/15 0.19 --1 ND ND 0.57 J ND ND 0.67 J NDug/L 04/05/16 0.19 --1 ND ND ND ND ND ND NDug/L 10/04/16 0.19 --1 ND ND ND ND ND ND NDug/L 04/03/17 0.19 --1 ND ND 0.55 J ND ND 0.77 J NDug/L 10/03/17 0.19 --1 ND ND 0.73 J ND ND 0.72 J NDug/L 05/22/18 0.19 --1 ND ND ND ND ND 0.41 J NDug/L 10/23/18 0.19 1 --ND ND 0.45 J ND ND 1.1 ND ug/L 04/16/19 0.19 1 --ND ND ND ND ND 0.62 J NDug/L 10/15/19 0.19 1 --ND ND 0.46 J ND ND 0.83 J NDug/L 04/14/20 0.19 1 --ND ND ND ND ND 0.43 J NDug/L 10/07/20 0.19 1 --ND ND ND ND ND 0.85 J NDug/L 05/10/21 0.19 1 --ND ND ND ND ND 0.49 J NDug/L 10/06/21 0.19 1 --ND ND ND ND ND ND NDug/L 05/17/22 0.19 1 --ND ND ND ND ND ND NDug/L 10/10/22 0.31 1 --DRY ND 0.51 J ND ND 0.97 J NDug/L 05/22/23 0.19 1 --DRY ND ND ND ND ND NDDichlorodifluoromethaneug/L 09/22/94 ----5 ND ND ND ND ND --NDNC 2L = 1000 ug/L ug/L 11/08/94 ----5 ND ND ND ND ND --ND(No EPA MCL)ug/L 01/18/95 ----5 ND ND ND ND ND --ND ug/L 04/23/96 ----5 ND ND 38 ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --NDug/L 10/16/97 ----5 ND ND ND --------ug/L 04/21/98 ----5 ND ND ND ND ND --NDug/L 04/07/99 ----5 ND ND ND ND ND --NDug/L 10/13/99 ----5 ND ND ND ND ND --NDug/L 04/05/00 ----5 ND ND 5.8 ND ND --NDug/L 10/25/00 ----5 ND ND 8.8 ND ND --NDug/L 04/04/01 ----5 ND ND 8.1 ND ND --NDug/L 04/08/02 ----5 ND ND 7.2 ND ND --NDug/L 10/21/02 ----5 ND ND ND ND ND --NDug/L 04/14/03 ----5 ND ND 6.2 ND ND --ND ug/L 10/01/03 ----5 ND ND ND ND ND --NDug/L 04/05/04 ----5 ND ND 7.1 ND ND --NDug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ND ND ND --NDug/L 10/06/05 ----5 ND ND 8.1 ND ND --NDug/L 04/03/06 ----5 ND ND ND ND ND --NDug/L 10/03/06 ----5 ND ND ND ND ND --NDug/L 04/05/07 ----5 ND ND ND ND ND --NDug/L 10/18/07 ----5 ND ND --0.8 J ND --NDug/L 04/29/08 ----5 ND ND 1.2 J ND ND --NDug/L 04/07/09 ----5 ND ND 1.8 J 0.71 J ND --NDug/L 10/19/09 ----5 ND ND 2.0 J 0.58 J ND --NDug/L 04/28/10 ----5 ND ND 1.1 J ND ND --ND ug/L 04/11/11 ----5 ND ND 0.63 J ND ND 4.0 J NDug/L 04/10/12 ----5 ND ND 0.52 J ND ND --NDug/L 04/09/13 ----5 ND ND ND ND ND --NDug/L 10/08/13 ----5 ND ND ND ND ND --NDug/L 04/08/14 ----5 ND ND ND ND ND --NDug/L 04/08/15 0.20 --5 ND ND ND ND ND --NDug/L 10/28/15 0.20 --5 ND ND ND 0.48 J ND 1.8 J NDug/L 04/05/16 0.20 --5 ND ND ND ND ND 1.5 J NDug/L 10/04/16 0.20 --5 ND ND ND ND ND 1.2 J NDug/L 04/03/17 0.20 --5 ND ND ND ND ND 1.8 J NDug/L 10/03/17 0.20 --5 ND ND ND ND ND 4.1 J NDug/L 05/22/18 0.20 --5 ND ND ND ND ND 0.43 J NDug/L 10/23/18 0.20 1 --ND ND ND ND ND 1.5 ND ug/L 04/16/19 0.20 1 --ND ND ND ND ND ND NDug/L 10/15/19 0.20 1 --ND ND ND ND ND 2.9 NDug/L 04/14/20 0.20 1 --ND ND ND ND ND ND NDug/L 10/07/20 0.20 1 --ND ND ND ND ND 1.6 NDug/L 05/10/21 0.20 1 --ND ND ND ND ND ND NDug/L 10/06/21 0.20 1 --ND ND ND ND ND ND NDug/L 05/17/22 0.20 1 --ND ND ND ND ND ND NDug/L 10/10/22 0.36 1 --DRY ND ND ND ND ND NDug/L 05/22/23 0.20 1 --DRY ND ND ND ND 1.18 ND 12 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit 1,1-Dichloroethane ug/L 09/22/94 ----5 ND ND ND ND ND --NDNC 2L = 6 ug/L ug/L 11/08/94 ----5 ND ND 17 ND ND --ND(No EPA MCL)ug/L 01/18/95 ----5 ND ND 13 ND ND --NDug/L 04/23/96 ----5 ND ND 21 ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --NDug/L 10/16/97 ----5 ND ND 13 ND ND --NDug/L 04/21/98 ----5 ND ND 13 ND ND --NDug/L 04/07/99 ----5 ND ND 17 ND ND --ND ug/L 10/13/99 ----5 ND ND 20 ND ND --NDug/L 04/05/00 ----5 ND ND 26 ND ND --NDug/L 10/25/00 ----5 ND ND 31 ND ND --NDug/L 04/04/01 ----5 ND ND 39 ND ND --NDug/L 04/08/02 ----5 ND ND 15.6 ND ND --NDug/L 10/21/02 ----5 ND ND 35.6 ND ND --NDug/L 04/14/03 ----5 ND ND 12.8 ND ND --NDug/L 10/01/03 ----5 ND ND 6.1 ND ND --NDug/L 04/05/04 ----5 ND ND 13.5 ND ND --NDug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ----------ug/L 10/06/05 ----5 ND ND 16.4 ND ND --ND ug/L 04/03/06 ----5 ND ND 5.4 ND ND --NDug/L 10/03/06 ----5 ND ND 12 ND ND --NDug/L 04/05/07 ----5 ND ND 6 ND ND --NDug/L 10/18/07 ----5 ND ND --2.2 J 1.2 J --NDug/L 04/29/08 ----5 ND ND 7.8 1.7 J 2.5 J --NDug/L 10/23/08 ----5 ND ND 15 2.6 J 1.4 J --NDug/L 04/07/09 ----5 ND ND 6.8 2.5 J 3.0 J --NDug/L 10/19/09 ----5 ND ND 11 2.6 J 1.1 J --NDug/L 04/28/10 ----5 ND 1.1 J 6.9 2.4 J 2.7 J --NDug/L 10/12/10 ----5 ND 0.59 J 12 3.9 J 1.5 J --NDug/L 04/11/11 ----5 ND ND 5.8 3.7 J 1.7 J --NDug/L 10/04/11 ----5 ND ND 13 5.6 1.9 J 26 NDug/L 04/10/12 ----5 ND ND 5.1 4.3 J 2.5 J --ND ug/L 10/15/12 ----5 ND ND 6.6 5.7 0.88 J --NDug/L 04/09/13 ----5 ND ND 4.3 J 6.9 1.0 J --NDug/L 10/08/13 ----5 ND ND 4.0 J 5.1 1.1 J --NDug/L 04/08/14 ----5 ND ND 3.0 J 6.6 1.3 J --ND ug/L 10/08/14 0.13 --5 ND 0.41 J 3.4 J 9.8 0.80 J --NDug/L 04/08/15 0.13 --5 ND 0.54 J 1.4 J 3.2 J ND --NDug/L 10/28/15 0.13 --5 ND ND 3.1 J 11 0.90 J 59 NDug/L 04/05/16 0.13 --5 ND ND 2.0 J 6.8 1.4 J 23 NDug/L 10/04/16 0.13 --5 ND ND 2.3 J 10 0.81 J 21 NDug/L 04/03/17 0.13 --5 ND 0.46 J 2.1 J 10 0.86 J 36 NDug/L 10/03/17 0.13 --5 ND 3.6 J 1.9 J 12 1.2 J 57 NDug/L 05/22/18 0.13 --5 ND ND 1.2 J 8.7 0.50 J 21 NDug/L 10/23/18 0.13 1 --ND ND 1.1 5.5 0.53 J 43 ND ug/L 04/16/19 0.13 1 --ND ND ND 5.8 ND 27 NDug/L 10/15/19 0.13 1 --ND 4.2 1.2 13 0.96 J 71 NDug/L 04/14/20 0.13 1 --ND ND ND 8.7 0.42 J 18 NDug/L 10/07/20 0.13 1 --ND 1.8 0.58 J 7.4 0.70 J 36 NDug/L 05/10/21 0.13 1 --ND 1.5 ND 3.0 ND 22 NDug/L 10/06/21 0.13 1 --ND ND ND 13 ND 49 NDug/L 05/17/22 0.13 1 --ND 1.8 ND 7.9 ND 17 NDug/L 10/10/22 0.33 1 --DRY ND 0.90 J 7.5 0.74 J 44 ND ug/L 05/22/23 0.13 1 --DRY 1.05 0.359 J 2.61 0.48 J 38.3 ND1,2-Dichloroethane ug/L 09/22/94 ----5 ND ND ND ND ND --NDNC 2L = 0.4 ug/L ug/L 11/08/94 ----5 ND ND ND ND ND --NDEPA MCL = 5 ug/L ug/L 01/18/95 ----5 ND ND ND ND ND --NDug/L 04/23/96 ----5 ND ND ND ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --NDug/L 10/16/97 ----5 ND ND ND ND ND --NDug/L 04/21/98 ----5 ND ND ND ND ND --NDug/L 04/07/99 ----5 ND ND ND ND ND --NDug/L 10/13/99 ----5 ND ND ND ND ND --NDug/L 04/05/00 ----5 ND ND ND ND ND --NDug/L 10/25/00 ----5 ND ND ND ND ND --NDug/L 04/04/01 ----5 ND ND ND ND ND --ND ug/L 04/08/02 ----5 ND ND ND ND ND --NDug/L 10/21/02 ----5 ND ND ND ND ND --NDug/L 04/14/03 ----5 ND ND ND ND ND --NDug/L 10/01/03 ----5 ND ND ND ND ND --NDug/L 04/05/04 ----5 ND ND ND ND ND --NDug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ND ND ND --NDug/L 10/06/05 ----5 ND ND ND ND ND --NDug/L 04/03/06 ----5 ND ND ND ND ND --NDug/L 10/03/06 ----5 ND ND ND ND ND --NDug/L 04/05/07 ----3 ND ND ND ND ND --NDug/L 10/18/07 ----1 ND ND --ND ND --ND ug/L 04/29/08 ----1 ND ND ND ND ND --NDug/L 10/23/08 ----1 ND ND ND ND ND --NDug/L 04/07/09 ----1 ND ND ND ND ND --NDug/L 10/19/09 ----1 ND ND ND ND ND --NDug/L 04/28/10 ----1 ND ND ND ND ND --NDug/L 10/12/10 ----1 ND ND ND ND ND --NDug/L 04/11/11 ----1 ND ND ND ND ND --NDug/L 10/04/11 ----1 ND ND ND ND ND ND NDug/L 04/10/12 ----1 ND ND ND ND ND --NDug/L 10/15/12 ----1 ND ND ND ND ND --NDug/L 04/09/13 ----1 ND ND ND ND ND --NDug/L 10/08/13 ----1 ND ND ND ND ND --NDug/L 04/08/14 ----1 ND ND ND ND ND --ND ug/L 10/08/14 0.21 --1 ND ND ND ND ND --NDug/L 04/08/15 0.21 --1 ND ND ND ND ND --NDug/L 10/28/15 0.21 --1 ND ND ND ND ND ND NDug/L 04/05/16 0.21 --1 ND ND ND ND ND ND NDug/L 10/04/16 0.21 --1 ND ND ND ND ND ND NDug/L 04/03/17 0.21 --1 ND ND ND ND ND ND NDug/L 10/03/17 0.21 --1 ND ND ND ND ND ND NDug/L 05/22/18 0.21 --1 ND ND ND ND ND ND NDug/L 10/23/18 0.21 1 --ND ND ND ND ND ND NDug/L 04/16/19 0.21 1 --ND ND ND ND ND ND NDug/L 10/15/19 0.21 1 --ND ND ND ND ND ND NDug/L 04/14/20 0.21 1 --ND ND ND ND ND ND ND ug/L 10/07/20 0.21 1 --ND ND ND ND ND ND NDug/L 05/10/21 0.21 1 --ND ND ND ND ND ND NDug/L 10/06/21 0.21 1 --ND ND ND ND ND ND NDug/L 05/17/22 0.21 1 --ND ND ND ND ND ND NDug/L 10/10/22 0.25 1 --DRY ND ND ND ND 0.39 J NDug/L 05/22/23 0.21 1 --DRY 1.05 ND ND ND 0.422 J ND 13 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit 1,1-Dichloroethene ug/L 09/22/94 ----5 ND ND ND ND ND --NDNC 2L = 350 ug/L ug/L 11/08/94 ----5 ND ND ND ND ND --NDEPA MCL = 7 ug/L ug/L 01/18/95 ----5 ND ND ND ND ND --NDug/L 04/23/96 ----5 ND ND ND ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --NDug/L 10/16/97 ----5 ND ND ND ND ND --NDug/L 04/21/98 ----5 ND ND ND ND ND --NDug/L 04/07/99 ----5 ND ND ND ND ND --ND ug/L 10/13/99 ----5 ND ND ND ND ND --NDug/L 04/05/00 ----5 ND ND ND ND ND --NDug/L 10/25/00 ----5 ND ND ND ND ND --NDug/L 04/04/01 ----5 ND ND ND ND ND --NDug/L 04/08/02 ----5 ND ND ND ND ND --NDug/L 10/21/02 ----5 ND ND ND ND ND --NDug/L 04/14/03 ----5 ND ND ND ND ND --NDug/L 10/01/03 ----5 ND ND ND ND ND --NDug/L 04/05/04 ----5 ND ND ND ND ND --NDug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ND ND ND --NDug/L 10/06/05 ----5 ND ND ND ND ND --ND ug/L 10/03/06 ----5 ND ND 11.2 ND ND --NDug/L 10/18/07 ----5 ND ND --ND ND --NDug/L 04/29/08 ----5 ND ND ND ND ND --NDug/L 10/23/08 ----5 ND ND ND ND ND --NDug/L 04/07/09 ----5 ND ND ND ND ND --NDug/L 10/19/09 ----5 ND ND ND ND ND --NDug/L 04/28/10 ----5 ND ND ND ND ND --NDug/L 10/12/10 ----5 ND ND 0.42 J ND ND --NDug/L 04/11/11 ----5 ND ND ND ND ND --NDug/L 10/04/11 ----5 ND ND ND ND ND ND NDug/L 04/10/12 ----5 ND ND ND ND ND --NDug/L 10/15/12 ----5 ND ND ND ND ND --NDug/L 04/09/13 ----5 ND ND ND ND ND --ND ug/L 10/08/13 ----5 ND ND ND ND ND --NDug/L 04/08/14 ----5 ND ND ND ND ND --NDug/L 10/08/14 0.21 --5 ND ND ND ND ND --NDug/L 04/08/15 0.21 --5 ND ND ND ND ND --NDug/L 10/28/15 0.21 --5 ND ND ND ND ND 0.82 J NDug/L 04/05/16 0.21 --5 ND ND ND ND ND ND NDug/L 10/04/16 0.21 --5 ND ND ND ND ND ND NDug/L 04/03/17 0.21 --5 ND ND ND ND ND ND NDug/L 10/03/17 0.21 --5 ND ND ND ND ND 0.72 J NDug/L 05/22/18 0.21 --5 ND ND ND ND ND ND NDug/L 10/23/18 0.21 1 --ND ND ND ND ND ND NDug/L 04/16/19 0.21 1 --ND ND ND ND ND ND ND ug/L 10/15/19 0.21 1 --ND ND ND ND ND 0.59 J NDug/L 04/14/20 0.21 1 --ND ND ND ND ND ND NDug/L 10/07/20 0.21 1 --ND ND ND ND ND ND NDug/L 05/10/21 0.21 1 --ND ND ND ND ND ND NDug/L 10/06/21 0.21 1 --ND ND ND ND ND ND NDug/L 05/17/22 0.21 1 --ND ND ND ND ND ND NDug/L 10/10/22 0.33 1 --DRY ND ND ND ND ND NDug/L 05/22/23 0.21 1 --DRY ND ND ND ND ND NDcis-1,2-Dichloroethene ug/L 09/22/94 ----5 ND ND ND ND ND --NDNC 2L = 70 ug/L ug/L 11/08/94 ----5 ND ND ND ND ND --NDEPA MCL = 70 ug/L ug/L 01/18/95 ----5 ND ND ND ND ND --NDug/L 04/23/96 ----5 ND ND ND ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --ND ug/L 10/16/97 ----5 ND ND ND ND ND --NDug/L 04/21/98 ----5 ND ND ND ND ND --NDug/L 04/07/99 ----5 ND ND ND ND ND --NDug/L 10/13/99 ----5 ND ND ND ND ND --NDug/L 04/05/00 ----5 ND ND ND ND ND --NDug/L 10/25/00 ----5 ND ND ND ND ND --NDug/L 04/04/01 ----5 ND ND ND ND ND --NDug/L 04/08/02 ----5 ND ND ND ND ND --NDug/L 10/21/02 ----5 ND ND ND ND ND --NDug/L 04/14/03 ----5 ND ND ND ND ND --NDug/L 10/01/03 ----5 ND ND ND ND ND --NDug/L 04/05/04 ----5 ND ND ND ND ND --ND ug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ----------ug/L 10/06/05 ----5 ND ND ND ND ND --NDug/L 04/03/06 ----5 ND ND ND ND ND --NDug/L 10/03/06 ----5 ND ND ND ND ND --NDug/L 04/05/07 ----5 ND ND ND ND ND --NDug/L 10/18/07 ----5 ND ND --ND ND --NDug/L 04/29/08 ----5 ND ND 0.63 J ND 1.8 J --NDug/L 10/23/08 ----5 ND ND 1.4 J 0.40 J 0.80 J --NDug/L 04/07/09 ----5 ND ND 0.49 J ND 1.8 J --NDug/L 10/19/09 ----5 ND ND 1.6 J 0.48 J 0.73 J --NDug/L 04/28/10 ----5 ND ND 1.1 J 0.49 J 2.5 J --NDug/L 10/12/10 ----5 ND ND 1.9 J 0.69 J 0.90 J --ND ug/L 04/11/11 ----5 ND ND 1.3 J 0.83 J 1.2 J --NDug/L 10/04/11 ----5 ND ND 1.8 J 0.84 J 0.86 J 2.6 J NDug/L 04/10/12 ----5 ND ND 1.2 J 0.85 J 3.3 J --NDug/L 10/15/12 ----5 ND ND 1.9 J 1.2 J 0.56 J --NDug/L 04/09/13 ----5 ND ND 1.5 J 0.91 J ND --NDug/L 10/08/13 ----5 ND ND 1.1 J 0.95 J 0.69 J --NDug/L 04/08/14 ----5 ND ND 0.97 J 1.2 J 1.5 J --NDug/L 10/08/14 0.15 --5 ND ND 1.2 J 1.8 J 0.46 J --NDug/L 04/08/15 0.15 --5 ND ND 0.41 J 0.60 J ND --NDug/L 10/28/15 0.15 --5 ND ND 1.1 J 2.2 J 0.53 J 6.3 NDug/L 04/05/16 0.15 --5 ND ND 0.75 J 1.1 J 2.2 J 2.3 J NDug/L 10/04/16 0.15 --5 ND ND 1.0 J 2.3 J 0.57 J 2.8 J ND ug/L 04/03/17 0.15 --5 ND ND 0.97 J 1.7 J 0.50 J 4.2 J NDug/L 10/03/17 0.15 --5 ND ND 1.0 J 2.5 J 0.73 J 6.2 NDug/L 05/22/18 0.15 --5 ND ND 1.1 J 2.2 J 0.88 J 3.6 J NDug/L 10/23/18 0.15 1 --ND ND 0.85 J 1.6 ND 7.3 ND ug/L 04/16/19 0.15 1 --ND ND 0.60 J 1.0 2.0 4.0 NDug/L 10/15/19 0.15 1 --ND ND 0.74 J 3.4 0.75 J 11 NDug/L 04/14/20 0.15 1 --ND ND ND 2.1 0.64 J 2.5 NDug/L 10/07/20 0.15 1 --ND ND 0.71 J 1.8 ND 6.8 NDug/L 05/10/21 0.15 1 --ND ND ND 1.0 ND 4.3 NDug/L 10/06/21 0.15 1 --ND ND ND 3.1 ND 7.3 NDug/L 05/17/22 0.15 1 --ND ND ND 1.7 ND 2.9 NDug/L 10/10/22 0.15 1 --ND ND ND 2.4 ND 9.9 NDug/L 05/22/23 0.15 1.0 --DRY ND 0.317 J 0.61 J 0.278 J 7.63 ND 14 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Chloromethane ug/L 09/22/94 ----10 ND ND ND ND ND --NDNC 2L = 3 ug/L ug/L 11/08/94 ----10 ND ND ND ND ND --ND(No EPA MCL)ug/L 01/18/95 ----10 ND ND ND ND ND --NDug/L 04/23/96 ----10 ND ND ND ND ND --NDug/L 06/17/97 ----10 ND ND ND ND ND --NDug/L 10/16/97 ----10 ND ND ND ND ND --NDug/L 04/21/98 ----10 ND ND ND ND ND --NDug/L 04/07/99 ----10 ND ND ND ND ND --ND ug/L 10/13/99 ----10 ND ND ND ND ND --NDug/L 04/05/00 ----10 ND ND ND ND ND --NDug/L 10/25/00 ----10 ND ND ND ND ND --NDug/L 04/04/01 ----10 ND ND ND ND ND --NDug/L 04/08/02 ----10 ND ND ND ND ND --NDug/L 10/21/02 ----10 ND ND ND ND ND --NDug/L 04/14/03 ----10 ND ND ND ND ND --NDug/L 10/01/03 ----10 ND ND ND ND ND --NDug/L 04/05/04 ----10 ND ND ND ND ND --NDug/L 10/18/04 ----10 ND ND ND ND ND --NDug/L 04/07/05 ----10 ND ND ND ND ND --NDug/L 10/06/05 ----10 ND ND ND ND ND --ND ug/L 04/03/06 ----10 ND ND ND ND ND --NDug/L 10/03/06 ----10 ND ND ND ND ND --NDug/L 04/05/07 ----5 ND ND ND ND ND --NDug/L 10/18/07 ----1 0.5 J 0.5 J --0.4 J 0.5 J --NDug/L 04/29/08 ----1 ND ND ND ND ND --NDug/L 10/23/08 ----1 ND ND ND ND ND --NDug/L 04/07/09 ----1 ND ND ND ND ND --NDug/L 10/19/09 ----1 ND ND ND ND ND --NDug/L 04/28/10 ----1 ND ND ND ND ND --NDug/L 10/12/10 ----1 ND 0.51 B 0.94 B 0.51 B 0.53 B --0.49 Jug/L 04/11/11 ----1 ND ND ND ND ND --NDug/L 10/04/11 ----1 ND ND ND ND ND ND NDug/L 04/10/12 ----1 ND ND ND ND ND --ND ug/L 10/15/12 ----1 ND ND ND ND ND --NDug/L 04/09/13 ----1 ND ND ND ND ND --NDug/L 10/08/13 ----1 ND ND ND ND ND --NDug/L 04/08/14 ----1 ND ND ND ND ND --NDug/L 10/08/14 0.13 --1 ND ND ND ND ND --NDug/L 04/08/15 0.13 --1 ND ND ND ND ND --NDug/L 10/28/15 0.13 --1 ND ND ND ND ND ND NDug/L 04/05/16 0.13 --1 ND ND ND ND ND ND NDug/L 10/04/16 0.13 --1 ND ND ND ND ND ND NDug/L 04/03/17 0.13 --1 ND ND ND ND ND ND NDug/L 10/03/17 0.13 --1 ND ND ND ND ND ND NDug/L 05/22/18 0.13 --1 ND ND ND ND ND ND NDug/L 10/23/18 0.13 1 --ND ND ND ND ND ND ND ug/L 04/16/19 0.13 1 --ND ND ND ND ND ND NDug/L 10/15/19 0.13 1 --ND ND ND ND ND ND NDug/L 04/14/20 0.13 1 --ND ND ND ND ND ND NDug/L 10/07/20 0.13 1 --ND ND ND ND ND ND NDug/L 05/10/21 0.13 1 --ND ND ND ND ND ND NDug/L 10/06/21 0.13 1 --ND ND ND ND ND ND NDug/L 05/17/22 0.13 1 --ND ND ND ND ND ND NDug/L 10/10/22 0.54 1 --DRY ND ND ND ND ND NDug/L 05/22/23 0.13 1 --DRY 0.147 J ND ND ND ND NDMethylene chloride ug/L 09/22/94 ----10 ND ND ND ND ND --NDNC 2L = 5 ug/L ug/L 11/08/94 ----10 ND ND ND ND ND --NDEPA MCL = 5 ug/L ug/L 01/18/95 ----10 ND ND ND ND ND --ND ug/L 04/23/96 ----10 ND ND ND ND ND --NDug/L 06/17/97 ----10 ND ND ND ND ND --NDug/L 10/16/97 ----10 ND ND ND ND ND --NDug/L 04/21/98 ----10 ND ND ND ND ND --NDug/L 04/07/99 ----10 ND ND ND ND ND --NDug/L 10/13/99 ----10 ND ND ND ND ND --NDug/L 04/05/00 ----10 ND ND 35 ND ND --NDug/L 10/25/00 ----10 ND ND 44 ND ND --NDug/L 04/04/01 ----10 ND ND 49 ND ND --NDug/L 04/08/02 ----10 ND ND 18.9 ND ND --NDug/L 10/21/02 ----10 ND ND 33.6 ND ND --NDug/L 04/14/03 ----10 ND ND 17.4 ND ND --ND ug/L 10/01/03 ----10 ND ND ND ND ND --NDug/L 04/05/04 ----10 ND ND 14.6 ND ND --NDug/L 10/18/04 ----10 ND ND ND ND ND --NDug/L 04/07/05 ----10 ND ND ND ND ND --NDug/L 10/06/05 ----10 ND ND 10.4 ND ND --NDug/L 04/03/06 ----10 ND ND ND ND ND --NDug/L 10/03/06 ----10 ND ND ND ND ND --NDug/L 04/05/07 ----5 ND ND ND ND ND --NDug/L 10/18/07 ----1 ND ND --0.3 B ND --0.2 Jug/L 04/29/08 ----1 ND ND 7.0 ND ND --NDug/L 10/23/08 ----1 ND ND 11 ND ND --NDug/L 04/07/09 ----1 ND ND 5.4 ND ND --NDug/L 10/19/09 ----1 ND ND 8.5 ND ND --ND ug/L 04/28/10 ----1 ND ND 7.5 ND ND --NDug/L 10/12/10 ----1 ND ND 12 ND ND --NDug/L 04/11/11 ----1 ND ND 4.4 0.45 J ND --NDug/L 10/04/11 ----1 ND ND 7.4 0.75 J ND 0.72 J NDug/L 04/10/12 ----1 ND ND 3.8 0.34 J ND --NDug/L 10/15/12 ----1 ND ND 4.6 0.47 J ND --NDug/L 04/09/13 ----1 ND ND 1.8 ND ND --NDug/L 10/08/13 ----1 ND ND 0.40 J ND ND --NDug/L 04/08/14 ----1 ND ND 0.97 J ND ND --NDug/L 10/08/14 0.23 --1 ND ND ND ND ND --NDug/L 04/08/15 0.23 --1 ND ND ND ND ND --NDug/L 10/28/15 0.23 --1 ND ND ND ND ND 0.47 J ND ug/L 04/05/16 0.23 --1 ND ND 1.2 ND ND 0.43 J NDug/L 10/04/16 0.23 --1 ND ND ND ND ND ND NDug/L 04/03/17 0.23 --1 ND ND ND ND ND ND NDug/L 10/03/17 0.23 --1 ND ND ND ND ND ND 1.2ug/L 05/22/18 0.23 --1 ND ND ND ND ND ND NDug/L 10/23/18 0.23 1 --ND ND 0.44 J ND ND ND ND ug/L 04/16/19 0.23 1 --ND ND ND ND ND ND NDug/L 10/15/19 0.23 1 --ND ND 0.60 J ND ND 0.67 J NDug/L 04/14/20 0.23 1 --ND ND ND ND ND ND 0.47 Jug/L 10/07/20 0.23 1 --ND ND ND ND ND ND NDug/L 05/10/21 0.23 1 --ND ND ND ND ND ND NDug/L 10/06/21 0.23 1 --ND ND ND ND ND ND NDug/L 05/17/22 0.23 1 --ND ND ND ND ND ND ND ug/L 10/10/22 3.2 5 --DRY ND ND ND ND ND NDug/L 05/22/23 0.23 1 --DRY ND ND ND ND 0.241 B 0.2518 J 15 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit 2-Butanone ug/L 09/22/94 ----100 ND ND ND ND ND --NDNC 2L = 4000 ug/L ug/L 11/08/94 ----100 ND ND ND ND ND --ND(No EPA MCL)ug/L 01/18/95 ----100 ND ND ND ND ND --NDug/L 04/23/96 ----100 ND ND ND ND ND --NDug/L 06/17/97 ----100 ND ND ND ND ND --NDug/L 10/16/97 ----100 ND ND ND ND ND --NDug/L 04/21/98 ----100 ND ND ND ND ND --NDug/L 04/07/99 ----100 ND ND ND ND ND --ND ug/L 10/13/99 ----100 ND ND ND ND ND --NDug/L 04/05/00 ----100 ND ND ND ND ND --NDug/L 10/25/00 ----100 ND ND ND ND ND --NDug/L 04/04/01 ----100 ND ND ND ND ND --NDug/L 04/08/02 ----100 ND ND ND ND ND --NDug/L 10/21/02 ----100 ND ND ND ND ND --NDug/L 04/14/03 ----100 ND ND ND ND ND --NDug/L 10/01/03 ----100 ND ND ND ND ND --NDug/L 04/05/04 ----100 ND ND ND ND ND --NDug/L 10/18/04 ----100 ND ND ND ND ND --NDug/L 04/07/05 ----100 ND ND ND ND ND --NDug/L 10/06/05 ----100 ND ND ND ND ND --ND ug/L 04/03/06 ----100 ND ND ND ND ND --NDug/L 10/03/06 ----100 ND ND ND ND ND --NDug/L 04/05/07 ----100 ND ND ND ND ND --NDug/L 10/18/07 ----100 ND ND --ND ND --NDug/L 04/29/08 ----100 ND ND ND ND ND --NDug/L 10/23/08 ----100 ND ND ND ND ND --NDug/L 04/07/09 ----100 ND ND ND ND ND --NDug/L 10/19/09 ----100 ND ND ND ND ND --NDug/L 04/28/10 ----100 ND ND ND ND ND --NDug/L 10/12/10 ----100 ND ND ND ND ND --NDug/L 04/11/11 ----100 ND ND ND ND ND --NDug/L 10/04/11 ----100 ND ND ND ND ND ND NDug/L 04/10/12 ----100 ND ND ND ND ND --ND ug/L 10/15/12 ----100 ND ND ND ND ND --NDug/L 04/09/13 ----100 ND ND ND ND ND --NDug/L 10/08/13 ----100 ND ND ND ND ND --NDug/L 04/08/14 ----100 ND ND ND ND ND --NDug/L 10/08/14 1.3 --100 ND ND ND ND ND --NDug/L 04/08/15 1.3 --100 ND 4.0 J ND ND ND --NDug/L 10/28/15 1.3 --100 ND ND ND ND ND ND NDug/L 04/05/16 1.3 --100 ND ND ND ND ND ND NDug/L 10/04/16 1.3 --100 ND ND ND ND ND ND NDug/L 04/03/17 1.3 --100 ND ND ND ND ND ND NDug/L 10/03/17 1.3 --100 ND ND ND ND ND ND NDug/L 05/22/18 1.3 --100 ND ND ND ND ND ND NDug/L 10/23/18 1.3 5 --ND ND ND ND ND ND ND ug/L 04/16/19 1.3 5 --ND ND ND ND ND ND NDug/L 10/15/19 1.3 5 --ND ND ND ND ND ND NDug/L 04/14/20 1.3 5 --ND ND ND ND ND ND NDug/L 10/07/20 1.3 5 --ND ND ND ND ND ND NDug/L 05/10/21 1.3 5 --ND ND ND ND ND ND NDug/L 10/06/21 1.3 5 --ND ND ND ND ND ND NDug/L 05/17/22 1.3 5 --2.6 B ND ND ND ND 2.8 B 11ug/L 10/10/22 6.4 10 --DRY ND ND ND ND ND NDug/L 05/22/23 10 20 --DRY ND ND ND ND ND ND4-Methyl-2-pentanone ug/L 09/22/94 ----50 ND ND ND ND ND --NDIMAC = 100 ug/L ug/L 11/08/94 ----50 ND ND ND ND ND --NDEPA MCL = 5 ug/L ug/L 01/18/95 ----50 ND ND ND ND ND --ND ug/L 04/23/96 ----50 ND ND ND ND ND --NDug/L 06/17/97 ----50 ND ND ND ND ND --NDug/L 10/16/97 ----50 ND ND ND ND ND --NDug/L 04/21/98 ----50 ND ND ND ND ND --NDug/L 04/07/99 ----50 ND ND ND ND ND --NDug/L 10/13/99 ----50 ND ND ND ND ND --NDug/L 04/05/00 ----50 ND ND ND ND ND --NDug/L 10/25/00 ----50 ND ND ND ND ND --NDug/L 04/04/01 ----50 ND ND ND ND ND --NDug/L 04/08/02 ----50 ND ND ND ND ND --NDug/L 10/21/02 ----100 ND ND ND ND ND --NDug/L 04/14/03 ----100 ND ND ND ND ND --ND ug/L 10/01/03 ----100 ND ND ND ND ND --NDug/L 04/05/04 ----100 ND ND ND ND ND --NDug/L 10/18/04 ----100 ND ND ND ND ND --NDug/L 04/07/05 ----100 ND ND ND ND ND --NDug/L 10/06/05 ----100 ND ND ND ND ND --NDug/L 04/03/06 ----100 ND ND ND ND ND --NDug/L 10/03/06 ----100 ND ND ND ND ND --NDug/L 04/05/07 ----100 ND ND ND ND ND --NDug/L 10/18/07 ----100 ND ND --ND ND --NDug/L 04/29/08 ----100 ND ND ND ND ND --NDug/L 10/23/08 ----100 ND ND ND ND ND --NDug/L 04/07/09 ----100 ND ND ND ND ND --NDug/L 10/19/09 ----100 ND ND ND ND ND --ND ug/L 04/28/10 ----100 ND ND ND ND ND --NDug/L 10/12/10 ----100 ND ND ND ND ND --NDug/L 04/11/11 ----100 ND ND ND ND ND --NDug/L 10/04/11 ----100 ND ND ND ND ND ND NDug/L 04/10/12 ----100 ND ND ND ND ND --NDug/L 10/15/12 ----100 ND ND ND ND ND --NDug/L 04/09/13 ----100 ND ND ND ND ND --NDug/L 10/08/13 ----100 ND ND ND ND ND --NDug/L 04/08/14 ----100 ND ND ND ND ND --NDug/L 10/08/14 1.1 --100 ND 1.4 J ND ND ND --NDug/L 04/08/15 1.1 --100 ND 5.0 J ND ND ND --NDug/L 10/28/15 1.1 --100 ND ND ND ND ND ND ND ug/L 04/05/16 1.1 --100 ND ND ND ND ND ND NDug/L 10/04/16 1.1 --100 ND ND ND ND ND ND NDug/L 04/03/17 1.1 --100 ND ND ND ND ND ND NDug/L 10/03/17 1.1 --100 ND ND ND ND ND ND NDug/L 05/22/18 1.1 --100 ND ND ND ND ND ND NDug/L 10/23/18 1.1 5 --ND ND ND ND ND ND ND ug/L 04/16/19 1.1 5 --ND ND ND ND ND ND NDug/L 10/15/19 1.1 5 --ND ND ND ND ND ND NDug/L 04/14/20 1.1 5 --ND ND ND ND ND ND NDug/L 10/07/20 1.1 5 --ND ND ND ND ND ND NDug/L 05/10/21 1.1 5 --ND ND ND ND ND ND NDug/L 10/06/21 1.1 5 --ND ND ND ND ND ND NDug/L 05/17/22 1.1 5 --ND ND ND ND ND ND ND ug/L 10/10/22 2.7 10 --DRY ND ND ND ND ND NDug/L 05/22/23 1.1 5 --DRY ND ND ND ND ND ND 16 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit 1,1-Dichloroethane ug/L 09/22/94 ----5 ND ND ND ND ND --NDNC 2L = 0.7 ug/L ug/L 11/08/94 ----5 ND ND ND ND ND --NDEPA MCL = 5 ug/L ug/L 01/18/95 ----5 ND ND ND ND ND --NDug/L 04/23/96 ----5 ND ND ND ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --NDug/L 10/16/97 ----5 ND ND ND ND ND --NDug/L 04/21/98 ----5 ND ND ND ND ND --NDug/L 04/07/99 ----5 ND ND ND ND ND --ND ug/L 10/13/99 ----5 ND ND ND ND ND --NDug/L 04/05/00 ----5 ND ND ND ND ND --NDug/L 10/25/00 ----5 ND ND ND ND ND --NDug/L 04/04/01 ----5 ND ND ND ND ND --NDug/L 04/08/02 ----5 ND ND ND ND ND --NDug/L 10/21/02 ----5 ND ND ND ND ND --NDug/L 04/14/03 ----5 ND ND ND ND ND --NDug/L 10/01/03 ----5 ND ND ND ND ND --NDug/L 04/05/04 ----5 ND ND ND ND ND --NDug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ----------ug/L 10/06/05 ----5 ND ND ND ND ND --ND ug/L 04/03/06 ----5 ND ND ND ND ND --NDug/L 10/03/06 ----5 ND ND ND ND ND --NDug/L 04/05/07 ----3 ND ND ND ND ND --NDug/L 10/18/07 ----1 ND ND --0.2 J 0.3 J --NDug/L 04/29/08 ----1 ND ND ND ND ND --NDug/L 10/23/08 ----1 ND ND ND ND ND --NDug/L 04/07/09 ----1 ND ND ND ND ND --NDug/L 10/19/09 ----1 ND ND ND ND ND --NDug/L 04/28/10 ----1 ND ND ND ND 0.49 J --NDug/L 10/12/10 ----1 ND ND ND 0.48 J ND --NDug/L 04/11/11 ----1 ND ND ND ND ND --NDug/L 10/04/11 ----1 ND ND ND ND ND 2.8 NDug/L 04/10/12 ----1 ND ND ND 0.56 J ND --ND ug/L 10/15/12 ----1 ND ND ND 0.46 J ND --NDug/L 04/09/13 ----1 ND ND ND 0.77 J ND --NDug/L 10/08/13 ----1 ND ND ND 0.45 J ND --NDug/L 04/08/14 ----1 ND ND ND 0.64 J ND --NDug/L 10/08/14 0.17 --1 ND ND ND 0.71 J ND --NDug/L 04/08/15 0.17 --1 ND ND ND ND ND --NDug/L 10/28/15 0.17 --1 ND ND ND 0.98 J ND 7.0 NDug/L 04/05/16 0.17 --1 ND ND ND ND ND 1.0 NDug/L 10/04/16 0.17 --1 ND ND ND 0.66 J ND 1.3 NDug/L 04/03/17 0.17 --1 ND ND ND 0.63 J ND 1.6 NDug/L 10/03/17 0.17 --1 ND ND ND 1.3 ND 5.4 NDug/L 05/22/18 0.17 --1 ND ND ND ND ND 1.1 NDug/L 10/23/18 0.17 1 --ND ND ND 0.60 J ND 2.2 ND ug/L 04/16/19 0.17 1 --ND ND ND 0.43 J ND 1.2 NDug/L 10/15/19 0.17 1 --ND ND ND 0.95 J ND 4.3 NDug/L 04/14/20 0.17 1 --ND ND ND 0.53 J ND 1.1 ND1.6 ND1.4 ND1.1 ND 2.6 ND0.75 J ND2.2 ND2.54 ND 17 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Trichloroethene ug/L 09/22/94 ----5 ND ND ND ND ND --NDNC 2L = 3 ug/L ug/L 11/08/94 ----5 ND ND ND ND ND --NDEPA MCL = 5 ug/L ug/L 01/18/95 ----5 ND ND ND ND ND --NDug/L 04/23/96 ----5 ND ND ND ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --NDug/L 10/16/97 ----5 ND ND ND ND ND --NDug/L 04/21/98 ----5 ND ND ND ND ND --NDug/L 04/07/99 ----5 ND ND ND ND ND --ND ug/L 10/13/99 ----5 ND ND ND ND ND --NDug/L 04/05/00 ----5 ND ND ND ND ND --NDug/L 10/25/00 ----5 ND ND ND ND ND --NDug/L 04/04/01 ----5 ND ND ND ND ND --NDug/L 04/08/02 ----5 ND ND ND ND ND --NDug/L 10/21/02 ----5 ND ND ND ND ND --NDug/L 04/14/03 ----5 ND ND ND ND ND --NDug/L 10/01/03 ----5 ND ND ND ND ND --NDug/L 04/05/04 ----5 ND ND ND ND ND --NDug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ----------ug/L 10/06/05 ----5 ND ND ND ND ND --ND ug/L 04/03/06 ----5 ND ND ND ND ND --NDug/L 10/03/06 ----5 ND ND ND ND ND --NDug/L 04/05/07 ----3 ND ND ND ND ND --NDug/L 10/18/07 ----1 ND ND --0.7 J 0.2 J --NDug/L 04/29/08 ----1 ND ND ND 0.67 J 0.41 J --NDug/L 10/23/08 ----1 ND ND 0.51 J 0.95 J ND --NDug/L 04/07/09 ----1 ND ND ND 0.90 J 0.46 J --NDug/L 10/19/09 ----1 ND ND 0.53 J 1.2 ND --NDug/L 04/28/10 ----1 ND ND ND 1.1 0.51 J --NDug/L 10/12/10 ----1 ND ND 0.46 J 1.5 ND --NDug/L 04/11/11 ----1 ND ND ND 1.4 ND --NDug/L 10/04/11 ----1 ND ND ND 1.6 ND 2.2 NDug/L 04/10/12 ----1 ND ND ND 1.6 0.39 J --ND ug/L 10/15/12 ----1 ND ND ND 1.8 ND --NDug/L 04/09/13 ----1 ND ND ND 2.4 ND --NDug/L 10/08/13 ----1 ND ND ND 1.9 ND --NDug/L 04/08/14 ----1 ND ND ND 2.3 ND --NDug/L 10/08/14 0.15 --1 ND ND ND 2.7 ND --NDug/L 04/08/15 0.15 --1 ND ND ND 0.96 J ND --NDug/L 10/28/15 0.15 --1 0.50 J ND ND 3.1 ND 3.6 NDug/L 04/05/16 0.15 --1 ND ND ND 1.4 ND 0.99 J NDug/L 10/04/16 0.15 --1 ND ND ND 2.4 ND 1.4 NDug/L 04/03/17 0.15 --1 ND ND ND 2.9 ND 1.5 NDug/L 10/03/17 0.15 --1 ND ND ND 3.2 ND 4.1 NDug/L 05/22/18 0.15 --1 ND ND ND 1.9 ND 1.0 NDug/L 10/23/18 0.15 1 --ND ND ND 1.2 ND 2.1 ND ug/L 04/16/19 0.15 1 --ND ND ND 1.4 ND 1.2 NDug/L 10/15/19 0.15 1 --ND ND ND 2.9 ND 3.9 NDug/L 04/14/20 0.15 1 --ND ND ND 1.9 ND 0.94 J NDug/L 10/07/20 0.15 1 --ND ND ND ND ND 1.5 NDug/L 05/10/21 0.15 1 --ND ND ND ND ND ND NDug/L 10/06/21 0.15 1 --ND ND ND 1.9 ND 2.3 NDug/L 05/17/22 0.15 1 --ND ND ND ND ND ND NDug/L 10/10/22 0.20 1 --DRY ND ND 1.6 ND 2.0 NDug/L 05/22/23 0.15 1 --DRY ND ND ND ND 1.92 NDTrichlorofluoromethaneug/L 09/22/94 ----5 ND ND 19 ND ND --NDNC 2L = 2000 ug/L ug/L 11/08/94 ----5 ND ND 29 ND ND --ND(No EPA MCL)ug/L 01/18/95 ----5 ND ND 20 ND ND --ND ug/L 04/23/96 ----5 ND ND ND ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --NDug/L 10/16/97 ----5 ND ND 14 ND ND --NDug/L 04/21/98 ----5 ND ND 15 ND ND --NDug/L 04/07/99 ----5 ND ND 9.9 ND ND --NDug/L 10/13/99 ----5 ND ND 7 ND ND --NDug/L 04/05/00 ----5 ND ND 6.5 ND ND --NDug/L 10/25/00 ----5 ND ND ND ND ND --NDug/L 04/04/01 ----5 ND ND 6 ND ND --NDug/L 04/08/02 ----5 ND ND ND ND ND --NDug/L 10/21/02 ----5 ND ND 6.9 ND ND --NDug/L 04/14/03 ----5 ND ND ND ND ND --ND ug/L 10/01/03 ----5 ND ND ND ND ND --NDug/L 04/05/04 ----5 ND ND ND ND ND --NDug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ND ND ND --NDug/L 10/06/05 ----5 ND ND ND ND ND --NDug/L 04/03/06 ----5 ND ND ND ND ND --NDug/L 10/03/06 ----5 ND ND ND ND ND --NDug/L 04/05/07 ----5 ND ND ND ND ND --NDug/L 10/18/07 ----1 ND ND --0.5 J ND --NDug/L 04/29/08 ----1 ND ND 1.1 ND ND --NDug/L 10/23/08 ----1 ND ND 1.1 0.65 J ND --NDug/L 04/07/09 ----1 ND ND 1.1 0.86 J ND --NDug/L 10/19/09 ----1 ND ND 1.1 0.62 J ND --ND ug/L 04/28/10 ----1 ND ND 1.0 0.49 J ND --NDug/L 10/12/10 ----1 ND ND 1.8 0.66 J ND --NDug/L 04/11/11 ----1 ND ND ND ND ND --NDug/L 10/04/11 ----1 ND ND 1.7 0.73 J ND 3.9 NDug/L 04/10/12 ----1 ND ND 0.55 J 0.36 J ND --NDug/L 10/15/12 ----1 ND ND 0.72 J ND ND --NDug/L 04/09/13 ----1 ND ND 0.47 J 0.70 J ND --NDug/L 10/08/13 ----1 ND ND 0.47 J ND ND --NDug/L 04/08/14 ----1 ND ND ND ND ND --NDug/L 10/08/14 0.24 --1 ND ND ND ND ND --NDug/L 04/08/15 0.24 --1 ND ND ND ND ND --NDug/L 10/28/15 0.24 --1 ND ND ND ND ND 3.2 ND ug/L 04/05/16 0.24 --1 ND ND ND ND ND 1.5 NDug/L 10/04/16 0.24 --1 ND ND ND ND ND ND NDug/L 04/03/17 0.24 --1 ND ND ND ND ND 1.1 NDug/L 10/03/17 0.24 --1 ND ND ND ND ND 3.1 NDug/L 05/22/18 0.24 --1 ND ND ND ND ND ND NDug/L 10/23/18 0.24 1 --ND ND ND ND ND 0.68 J ND ug/L 04/16/19 0.24 1 --ND ND ND ND ND ND NDug/L 10/15/19 0.24 1 --ND ND ND ND ND 1.6 NDug/L 04/14/20 0.24 1 --ND ND ND ND ND ND NDug/L 10/07/20 0.24 1 --ND ND ND ND ND ND NDug/L 05/10/21 0.24 1 --ND ND ND ND ND ND NDug/L 10/06/21 0.24 1 --ND ND ND ND ND ND NDug/L 05/17/22 0.24 1 --ND ND ND ND ND ND ND ug/L 10/10/22 0.33 1 --DRY ND ND ND ND 1.0 NDug/L 05/22/23 0.24 1 --DRY ND ND ND ND ND ND 18 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit Vinyl chloride ug/L 09/22/94 ----10 ND ND ND ND ND --NDNC 2L = 0.03 ug/L ug/L 11/08/94 ----10 ND ND ND ND ND --NDEPA MCL = 2 ug/L ug/L 01/18/95 ----10 ND ND ND ND ND --NDug/L 04/23/96 ----10 ND ND ND ND ND --NDug/L 06/17/97 ----10 ND ND ND ND ND --NDug/L 10/16/97 ----10 ND ND ND ND ND --NDug/L 04/21/98 ----10 ND ND ND ND ND --NDug/L 04/07/99 ----10 ND ND ND ND ND --ND ug/L 10/13/99 ----10 ND ND ND ND ND --NDug/L 04/05/00 ----10 ND ND ND ND ND --NDug/L 10/25/00 ----10 ND ND ND ND ND --NDug/L 04/04/01 ----10 ND ND ND ND ND --NDug/L 04/04/02 ----10 ND ND ND ND ND --NDug/L 10/21/02 ----10 ND ND ND ND ND --NDug/L 04/14/03 ----10 ND ND ND ND ND --NDug/L 10/01/03 ----10 ND ND ND ND ND --NDug/L 04/05/04 ----10 ND ND ND ND ND --NDug/L 10/18/04 ----10 ND ND ND ND ND --NDug/L 04/07/05 ----10 ND ND ND ND ND --NDug/L 10/06/05 ----10 ND ND ND ND ND --ND ug/L 04/03/06 ----10 ND ND ND ND ND --NDug/L 10/03/06 ----10 ND ND ND ND ND --NDug/L 04/05/07 ----10 ND ND ND ND ND --NDug/L 10/18/07 ----1 ND ND --ND ND --NDug/L 04/29/08 ----1 ND ND 0.41 J ND 0.54 J --NDug/L 10/23/08 ----1 ND ND 0.93 J ND ND --NDug/L 04/07/09 ----1 ND ND 0.46 J ND 0.71 J --NDug/L 10/19/09 ----1 ND ND 1.2 ND ND --NDug/L 04/28/10 ----1 ND ND 0.63 J ND 0.64 J --NDug/L 10/12/10 ----1 ND ND 1.0 ND ND --NDug/L 04/11/11 ----1 ND ND 0.70 J ND ND --NDug/L 10/04/11 ----1 ND ND 1.1 ND ND ND NDug/L 04/10/12 ----1 ND ND 0.51 J ND 0.34 J --ND ug/L 10/15/12 ----1 ND ND 1.0 ND ND --NDug/L 04/09/13 ----1 ND ND 0.75 J ND ND --NDug/L 10/08/13 ----1 ND ND 0.74 J ND ND --NDug/L 04/08/14 ----1 ND ND 0.51 J ND ND --NDug/L 10/08/14 0.32 --1 ND ND 0.52 J ND ND --NDug/L 04/08/15 0.32 --1 ND ND ND ND ND --NDug/L 10/28/15 0.32 --1 ND ND 0.48 J ND ND 1.3 NDug/L 04/05/16 0.32 --1 ND ND ND ND ND ND NDug/L 10/04/16 0.32 --1 ND ND ND ND ND ND NDug/L 04/03/17 0.32 --1 ND ND ND ND ND 0.70 J NDug/L 10/03/17 0.32 --1 ND ND ND ND ND 1.2 NDug/L 05/22/18 0.32 --1 ND ND ND ND ND ND NDug/L 10/23/18 0.32 1 --ND ND ND ND ND 1.0 ND ug/L 04/16/19 0.32 1 --ND ND ND ND ND 0.65 J NDug/L 10/15/19 0.32 1 --ND ND ND ND ND 1.3 NDug/L 04/14/20 0.32 1 --ND ND ND ND ND ND NDug/L 10/07/20 0.32 1 --ND ND ND ND ND 0.93 J NDug/L 05/10/21 0.32 1 --ND ND ND ND ND ND NDug/L 10/06/21 0.32 1 --ND ND ND ND ND 0.98 J NDug/L 05/17/22 0.32 1 --ND ND ND ND ND 0.47 J NDug/L 10/10/22 0.40 1 --DRY ND ND ND ND 0.86 J NDug/L 05/22/23 0.32 1 --DRY ND ND ND ND 0.665 J NDXylenes (Total)ug/L 09/22/94 ----5 ND ND ND ND ND --NDNC 2L = 500 ug/L ug/L 11/08/94 ----5 ND ND ND ND ND --NDEPA MCL = 10,000 ug/L ug/L 01/18/95 ----5 ND ND ND ND ND --ND ug/L 04/23/96 ----5 ND ND ND ND ND --NDug/L 06/17/97 ----5 ND ND ND ND ND --NDug/L 10/16/97 ----5 ND ND ND ND ND --NDug/L 04/21/98 ----5 ND ND ND ND ND --NDug/L 04/07/99 ----5 ND ND ND ND ND --NDug/L 10/13/99 ----5 ND ND ND ND ND --NDug/L 04/05/00 ----5 ND ND ND ND ND --NDug/L 10/25/00 ----5 ND ND ND ND ND --NDug/L 04/04/01 ----5 ND ND ND ND ND --NDug/L 04/04/02 ----5 ND ND ND ND ND --NDug/L 10/21/02 ----5 ND ND ND ND ND --NDug/L 04/14/03 ----5 ND ND ND ND ND --ND ug/L 10/01/03 ----5 ND ND ND ND ND --NDug/L 04/05/04 ----5 ND ND ND ND ND --NDug/L 10/18/04 ----5 ND ND ND ND ND --NDug/L 04/07/05 ----5 ND ND ND ND ND --NDug/L 10/06/05 ----5 ND ND ND ND ND --NDug/L 04/03/06 ----5 ND ND ND ND ND --NDug/L 10/03/06 ----5 ND ND ND ND ND --NDug/L 04/05/07 ----4 ND ND ND ND ND --NDug/L 10/18/07 ----5 ND ND --ND ND --NDug/L 04/29/08 ----5 ND ND ND ND ND --NDug/L 10/23/08 ----5 ND ND 1.2 J ND ND --NDug/L 04/07/09 ----5 ND ND ND ND ND --NDug/L 10/19/09 ----5 ND ND 1.2 J ND ND --ND ug/L 04/28/10 ----5 ND ND 0.54 J ND ND --NDug/L 10/12/10 ----5 ND ND 1.0 J ND ND --NDug/L 04/11/11 ----5 ND ND ND ND ND --NDug/L 10/04/11 ----5 ND ND ND ND ND ND NDug/L 04/10/12 ----5 ND ND ND ND ND --NDug/L 10/15/12 ----5 ND ND 0.64 J ND ND --NDug/L 04/09/13 ----5 ND ND 0.57 J ND ND --NDug/L 10/08/13 ----5 ND ND ND ND ND --NDug/L 04/08/14 ----5 ND ND ND ND ND --NDug/L 10/08/14 0.45 --5 ND ND ND ND ND --NDug/L 04/08/15 0.45 --5 ND ND ND ND ND --NDug/L 10/28/15 0.45 --5 ND ND ND ND ND ND ND ug/L 04/05/16 0.45 --5 ND ND ND ND ND ND NDug/L 10/04/16 0.45 --5 ND ND ND ND ND ND NDug/L 04/03/17 0.45 --5 ND ND ND ND ND ND NDug/L 10/03/17 0.45 --5 ND ND ND ND ND ND NDug/L 05/22/18 0.45 --5 ND ND ND ND ND ND NDug/L 10/23/18 0.45 3 --ND ND ND ND ND ND ND ug/L 04/16/19 0.45 3 --ND ND ND ND ND ND NDug/L 10/15/19 0.45 3 --ND ND ND ND ND ND NDug/L 04/14/20 0.45 3 --ND ND ND ND ND ND NDug/L 10/07/20 0.45 3 --ND ND ND ND ND ND NDug/L 05/10/21 0.45 3 --ND ND ND ND ND ND NDug/L 10/06/21 0.45 3 --ND ND ND ND ND ND NDug/L 05/17/22 0.45 3 --ND ND ND ND ND ND ND ug/L 10/10/22 0.23 1 --DRY ND ND ND ND ND NDug/L 05/22/23 0.45 3 --DRY ND ND ND ND ND ND 19 of 20 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Summary of Historical Groundwater Monitoring Results TABLE 4 Closed Randolph County Landfill, Permit No. 76-01 SWS Reporting Limit Detected Monitoring Constituent/Parameter Units Date BlanksDetection Limit Downgradient WellsUpgradient WellQuanitation Limit 1,4-Dioxane ug/L 10/23/18 1.2 2 --ND ND 2.3 ND 5.6 38 NDNC 2L = 3 ug/L ug/L 02/28/19 1.2 2 ----------ND 18 NDug/L 04/16/19 1.2 2 --ND 2.0 ND ND ND 16 NDug/L 10/15/19 1.2 2 --ND 21 2.5 1.4 J ND 25 NDug/L 04/14/20 0.8 2 --ND 6.2 1.2 J 0.93 J 0.84 J 12 NDug/L 10/07/20 0.8 2 --ND 12 1.9 J 0.99 J 1.1 J 23 NDug/L 05/10/21 0.8 2 ND 15 0.93 J ND 0.94 J 13 NDug/L 10/06/21 0.8 2 --ND 14 2.1 1.4 J 1.1 J 21 ND ug/L 05/17/22 0.8 2 --ND 11 1.2 J 1.0 J 1.2 J 11 NDug/L 10/10/22 0.27 1.4 --DRY 11 5.7 2.1 1.9 42 NDug/L 05/22/23 0.32 0.5 --DRY 9.11 1.47 0.565 0.888 24.4 ND 20 of 20 Notes:ug/L =micrograms per litermg/L = milligrams per literND =Not detected at the stated reporting limit for data before October 2007 and not detected at the laboratory detection limit for data from October 2007 forwardNM =Not measured J =B =Blank-qualified resultR =unusable data-- =no data available# =EPA Action Level* =EPA Secondary MCLBlanks =field, trip and method blanksBold Only = Concentration above current NC 2L Groundwater Standard or NC SWS Groundwater Protection StandardShaded and Bold = Concentration above current NC 2L Groundwater Standard or NC SWS Groundwater Protection Standard and EPA MCLGWPS =Solid Waste Section Groundwater Protection StandardNC 2L = North Carolina 2L Groundwater StandardIMAC =Interim Maximum Allowable Concentration (under NC 2L Rules)EPA MCL =US Environmental Protection Agency Maximum Contaminant Level SWS Reporting Limit = NCPQL or lab-specific reporting limit prior to October 2007 and NCSWSL starting in October 20071)Historical data prior to April 2008 provided by the County as taken from historical reports from Hazen and Sawyer and Environment 1.2)For the October 2017 event, selenium was detected in the sample from MW-6 by method 6010D; however, it was non-detect when analyzed by method 6020B.3)For the April 2019 event, diethylphthalate, a common laboratory contaminant, was re-analyzed outside of hold time for MW-7. Both results are included.4)During the April 2020 event, chromium and cobalt in the sample from MW-7 were re-analyzed. Re-analysis results are in parentheses.5)The dilutions during the May 2023 Event are as follows: antimony and thallium (2x): all points. Prior to the October 2018 event, J flags are estimated values below the SWS Reporting limit. Beginning with the October 2018 event, J flags are estimated values between MDL and PQL. September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Detected Monitoring Constituent/Parameter Units Date Downgradient WellsWell 1 of 3 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Detected Monitoring Constituent/Parameter Units Date Downgradient WellsWell Temperature (field)Celsius 11/08/94 ----15 15 13 --Celsius 01/18/95 ----14 10 13 --Celsius 04/23/96 17 16 15 13 16 --Celsius 06/17/97 19 15 17 15 17 --Celsius 10/16/97 16 15 15 15 14 --Celsius 04/21/98 15 12 14 14 15 --Celsius 04/07/99 18 14 16 14 15 --Celsius 10/13/99 16 16 16 16 16 --Celsius 04/05/00 15 12 13 13 14 --Celsius 10/25/00 16 16 16 16 15 --Celsius 04/04/01 14 12 13 13 15 --Celsius 04/08/02 16 13 11 16 16 --Celsius 10/21/02 17 17 16 16 16 --Celsius 04/14/03 18 12 15 14 17 --Celsius 10/01/03 16 16 16 15 15 -- Celsius 04/05/04 15 12 13 12 13 -- Celsius 10/18/04 17 16 15 15 15 -- Celsius 04/07/05 18 14 16 15 16 -- Celsius 10/06/05 18 18 18 17 17 --Celsius 04/03/06 17 15 16 15 16 --Celsius 10/03/06 18 18 17 16 16 --Celsius 04/05/07 17 13 15 13 15 --Celsius 10/18/07 18 17 --16 16 --Celsius 04/29/08 16.5 14.0 15.5 15.8 16.2 --Celsius 10/23/08 15.1 16.4 16.6 17.3 16.8 --Celsius 04/07/09 14.6 12.3 14.4 12.7 14.1 --Celsius 10/19/09 17.9 17.9 17.0 16.3 16.2 --Celsius 04/28/10 16.8 15.4 16.1 15.2 17.2 --Celsius 10/12/10 18.6 19.7 18.4 18.6 16.3 --Celsius 04/11/11 16.6 12.8 16.4 14.7 15.4 15.4Celsius10/04/11 18.6 18.0 17.4 17.1 16.7 --Celsius 04/10/12 16.4 14.6 15.4 13.5 15.4 --Celsius 10/15/12 17.5 17.2 16.5 16.5 15.7 --Celsius 04/09/13 18.1 14.4 15.9 14.8 15.8 --Celsius 10/07/13 17.3 17.3 16.5 15.9 15.5 --Celsius 04/08/14 17.9 11.9 14.9 13.2 14.8 --Celsius 10/08/14 17.8 17.3 17.2 16.0 15.6 --Celsius 04/08/15 16.0 13.4 16.2 14.3 14.8 --Celsius 10/28/15 18.5 16.2 17.3 16.9 15.0 17.1Celsius04/05/16 14.9 11.7 16.2 13.4 15.7 12.7 Celsius 10/04/16 17.3 17.9 17.3 18.3 15.7 17.0 Celsius 04/03/17 15.6 14.9 16.3 14.0 15.4 15.9 Celsius 10/03/17 19.81 17.9 18.1 17.5 17.7 16.8 Celsius 05/22/18 20.3 17.9 17.4 15.9 16.4 15.4Celsius10/23/18 14.6 15.8 16.5 16.8 13.1 15.5Celsius04/16/19 16.3 14.6 17.6 14.3 15.1 14.0Celsius10/15/19 17.5 17.3 17.2 17.7 15.5 17.4Celsius04/14/20 16.2 13.5 16.0 14.1 15.6 14.6Celsius10/07/20 17.2 19.2 18.5 17.9 16.2 16.3Celsius05/10/21 17.8 13.7 16.5 14.3 14.6 14.8Celsius08/19/21 ----17.6 ------Celsius 10/06/21 18.4 18.2 17.6 17.6 16.5 16.8Celsius05/17/22 19.9 15.8 18.2 14.5 14.9 15.8Verification Event Celsius 08/22/22 ----19.1 ------Celsius 10/10/22 Dry 15.8 17.1 16.4 16.4 16.2Verification Event Celsius 11/22/22 ----16.6 16.2 --16.0Celsius05/22/23 --17.0 15.8 15.1 15.1 15.2Turbidity (field)NTU 04/29/08 66.5 97.8 3.38 6.15 2.37 --NTU 10/23/08 3.03 23.6 1.66 26.6 1.44 --NTU 04/07/09 8.52 46.0 9.24 7.55 1.56 --NTU 10/19/09 16.7 32.6 5.53 13.1 7.89 --NTU 04/28/10 2.57 24.6 11 13.3 2.36 --NTU 10/12/10 5.45 45.3 2.05 39.4 0.00 --NTU 04/11/11 4.39 25.3 16.7 34.7 2.43 5.35NTU10/04/11 4.24 8.83 1.64 8.52 0.86 -- NTU 04/10/12 8.27 18.3 15.7 10.0 9.24 -- NTU 10/15/12 32.2 7.46 45.9 37.9 1.60 -- NTU 04/09/13 21.1 56.0 34.3 15.3 1.71 -- NTU 10/07/13 8.46 9.21 22.8 12.4 1.14 --NTU 04/08/14 10.2 60.8 19.3 19.5 2.97 --NTU 10/08/14 7.13 14.0 3.62 16.2 2.27 --NTU 04/08/15 1.45 11.1 7.27 7.22 4.02 --NTU 10/28/15 3.98 5.61 1.29 14.0 3.40 1.33NTU04/05/16 17.9 18.4 17.3 4.97 2.64 1.23NTU10/04/16 3.10 24.3 1.24 1.05 0.60 1.41NTU04/03/17 1.14 8.76 2.59 1.46 1.02 1.80NTU10/03/17 2.19 3.61 2.60 4.42 0.87 6.05NTU05/22/18 2.70 19.7 9.00 1.69 0.80 2.20NTU10/23/18 3.43 2.22 0.80 2.93 0.85 0.93NTU04/16/19 0.83 24.0 8.19 3.44 0.63 0.80NTU10/15/19 1.35 18.5 0.40 3.60 0.23 0.74NTU04/14/20 0.61 1.00 2.24 3.31 1.63 1.25NTU10/07/20 4.24 9.08 0.01 5.36 0.86 2.37NTU05/10/21 0.48 1.62 0.73 8.76 0.22 0.51NTU08/19/21 ----0.59 ------NTU 10/06/21 7.79 9.08 1.44 4.33 0.88 3.52NTU05/17/22 9.79 8.68 6.44 2.47 1.78 0.77Verification Event NTU 08/22/22 ----0.95 ------NTU 10/10/22 Dry 9.91 1.82 2.95 1.34 0.64Verification Event NTU 11/10/22 ----0.85 3.21 --1.71 NTU 05/22/23 --23.8 0.20 9.02 1.93 0.20 2 of 3 September 2023 31404568.018 MW-5 MW-6 MW-7 MW-8 MW-9 MW-10S Detected Monitoring Constituent/Parameter Units Date Downgradient WellsWell Dissolved Oxygen (field)mg/L 04/29/08 --5.20 1.12 4.15 1.27 --mg/L 10/23/08 --0.00 0.00 3.41 0.00 --mg/L 04/07/09 5.39 4.77 1.11 5.73 1.16 --mg/L 10/19/09 3.48 1.92 1.19 3.67 2.33 --mg/L 04/28/10 4.30 2.20 0.86 3.97 1.13 --mg/L 10/12/10 4.88 2.97 0.44 2.85 0.53 --mg/L 04/11/11 2.69 4.95 1.10 4.24 1.52 1.67mg/L 10/04/11 4.18 2.60 0.73 2.97 0.68 --mg/L 04/10/12 --3.87 --3.54 0.88 --mg/L 10/15/12 --0.69 --2.61 1.44 --mg/L 04/09/13 --4.81 --3.70 1.98 --mg/L 10/07/13 --0.82 --2.97 0.60 --mg/L 04/08/14 --7.47 --3.71 0.68 --mg/L 10/08/14 2.61 0.63 0.98 3.14 0.83 --mg/L 04/08/15 1.81 2.88 0.73 3.12 1.06 -- mg/L 10/28/15 2.16 2.10 0.71 3.60 1.88 1.55 mg/L 04/05/16 3.43 3.45 0.85 3.39 1.14 2.24 mg/L 10/04/16 3.55 3.24 0.99 3.81 2.06 1.48 mg/L 04/03/17 5.94 2.19 0.82 5.60 1.80 2.53mg/L 10/03/17 3.98 1.05 0.78 4.80 1.02 0.52mg/L 05/22/18 4.71 2.93 0.39 1.78 1.30 0.87mg/L 10/23/18 --2.71 0.42 2.45 1.98 0.42mg/L 04/16/19 1.54 2.50 0.32 2.41 1.03 0.63mg/L 10/05/19 1.44 5.53 0.40 3.60 1.08 0.31mg/L 04/14/20 4.88 1.99 0.82 2.31 0.73 1.47mg/L 10/07/20 2.53 0.45 0.26 2.34 2.49 1.27mg/L 05/10/21 2.67 0.89 0.26 0.86 0.58 1.10mg/L 08/19/21 ----0.18 ------mg/L 10/06/21 3.60 0.50 0.81 1.36 2.80 1.15mg/L 05/17/22 4.29 1.12 0.99 1.69 1.69 4.10Verification Event mg/L 08/22/22 ----0.36 ------mg/L 10/10/22 Dry 2.13 1.39 3.50 0.59 0.24Verification Event mg/L 11/10/22 ----1.49 2.47 --1.15mg/L 05/22/23 --1.91 0.37 1.75 1.41 0.82Oxidation Reduction Potential (field)mV 04/29/08 --103 175 83.4 104 --mV 10/23/08 --157 167 87 79 --mV 04/07/09 205 200 225 147 176 --mV 10/19/09 161 167 162 126 137 --mV 04/28/10 97.8 111 134 115 75.2 --mV 10/12/10 170 136 164 308 114 -- mV 04/11/11 150 220 238 167 182 158 mV 10/04/11 -118 -51.3 19.8 -70.8 -107 -- mV 04/10/12 --117 --130 128 -- mV 10/15/12 --39.7 --63.2 43.9 --mV 04/09/13 --98.8 --52.8 47.8 --mV 10/07/13 --208 --163 135 --mV 04/08/14 --249 --202 149 --mV 10/08/14 152 202 161 184 74.1 --mV 04/08/15 31.7 95.8 70.6 26.9 30.7 --mV 10/28/15 11.0 142 137 178 138 115mV04/05/16 204 287 188 193 119 193mV10/04/16 220 199 196 90.0 155 247mV04/03/17 211 189 125 202 227 139mV10/03/17 110 101 126 118 79 117mV05/22/18 172 213 142 230 197 144mV10/23/18 --48.5 138 133 135 139mV04/16/19 147 363 123 348 71 96mV10/15/19 277 247 144 358 238 113mV04/14/20 96 234 57.2 183 177 304mV10/07/20 10.9 26.8 120 -24.3 25.4 189mV05/10/21 225 150 58.7 243 75.1 147mV08/19/21 ----135 ------mV 10/06/21 152 86.3 172 176 307 130mV05/17/22 179 25.6 174 123 139 45Verification Event mV 08/22/22 ----173 ------ mV 10/10/22 Dry 109 123 125 178 127 Verification Event mV 11/10/22 ----55 54 --55 mV 05/22/23 ---166.6 -318 -29 218.8 -341 Notes:mg/L = milligrams per literNTU =Nephelometric Turbidity UnitsmV =millivoltsS.U. =Standard Units-- =no data available 3 of 3 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 Antimony ug/L 09/22/94 ----30 ND ND ND ND ND No SW Standard ug/L 11/08/94 ----30 ND ND ND ND ND ug/L 01/18/95 ----30 ND ND ND ND ND ug/L 04/23/96 ----30 ND ND ND ND ND ug/L 06/17/97 ----30 ND ND ND ND ND ug/L 10/16/97 ----30 ND ND ND ND ND ug/L 04/21/98 ----30 ND ND ND ND ND ug/L 04/07/99 ----30 ND ND ND ND ND ug/L 10/13/99 ----30 ND ND ND ND ND ug/L 04/05/00 ----30 ND ND ND ND ND ug/L 10/25/00 ----30 ND ND ND ND ND ug/L 04/04/01 ----30 ND ND ND ND ND ug/L 04/08/02 ----30 ND ND ND ND ND ug/L 10/21/02 ----30 ND ND ND ND ND ug/L 04/14/03 ----30 ND ND ND ND ND ug/L 10/01/03 ----30 ND ND ND ND ND ug/L 04/05/04 ----30 ND ND ND ND ND ug/L 10/18/04 ----30 ND ND ND ND ND ug/L 04/07/05 ----30 ND ND ND ND ND ug/L 10/06/05 ----30 ND ND ND ND ND ug/L 04/03/06 ----30 ND ND ND ND ND ug/L 10/03/06 ----30 ND ND ND ND ND ug/L 04/05/07 ----6 ND ND ND ND ND ug/L 10/18/07 ----6 --3.5 J --3.6 J 0.1 J ug/L 04/29/08 ----6 ND 1.61 J ND ND ND ug/L 10/23/08 ----6 Dry 1.25 J ND 1.96 J ND ug/L 04/07/09 ----6 ND ND ND ND ND ug/L 10/19/09 ----6 Dry 1.52 J Dry 2.36 J 0.102 J ug/L 04/29/10 ----6 ND 1.09 J ND 0.905 J ND ug/L 10/13/10 ----6 ND 1.45 J ND 1.17 J ND ug/L 04/11/11 ----6 ND 0.532 J ND 0.418 J ND ug/L 10/03/11 ----6 ND ND 0.561 J 0.835 J ND ug/L 04/10/12 ----6 ND ND 0.900 J 0.533 J ND ug/L 10/15/12 ----6 0.220 J 1.26 J 1.60 J ND ND ug/L 04/09/13 ----6 ND ND ND ND ND ug/L 10/08/13 ----6 ND 0.572 J 1.18 J 1.57 J ND ug/L 04/08/14 ----6 ND ND ND ND ND ug/L 10/08/14 0.22 --6 2.28 J dry 1.83 J 2.37 J ND ug/L 04/08/15 0.22 --6 ND 0.914 J ND 0.641 J ND ug/L 10/28/15 0.22 --6 ND 1.24 J ND 2.29 J ND ug/L 04/05/16 0.22 --6 ND 1.40 J ND 0.786 J ND ug/L 10/04/16 0.22 --6 ND 2.07 J ND 1.24 B 0.388 J ug/L 04/03/17 0.37 --6 ND 0.775 J ND 0.981 J ND ug/L 10/03/17 0.37 --6 ND 2.97 J Dry 2.10 J ND ug/L 05/22/18 0.37 --6 ND ND ND ND ND ug/L 10/23/18 1.85 5 --ND ND ND ND ND ug/L 04/16/19 0.37 1 --ND ND ND ND ND ug/L 10/16/19 0.74 2 --Dry 2.52 Dry 2.35 ND ug/L 04/14/20 0.74 2 --ND ND ND ND ND ug/L 10/07/20 0.74 2 --ND 0.781 J ND ND ND ug/L 05/10/21 0.74 2 ND ND ND ND ND ug/L 10/06/21 0.74 2 --Dry ND 1.09 J 0.975 J ND ug/L 05/18/22 0.74 2 --ND 0.763 J ND ND ND ug/L 10/10/22 0.52 5.0 --DRY 0.92 J DRY 0.59 J ND ug/L 05/22/23 0.34 5 --ND ND ND ND ND Arsenic ug/L 09/22/94 ----10 ND ND ND ND ND Human Health SW Standard = 10 ug/L ug/L 11/08/94 ----10 ND ND ND ND ND ug/L 01/18/95 ----10 ND ND ND ND ND ug/L 04/23/96 ----10 ND ND ND ND ND ug/L 06/17/97 ----10 ND ND ND ND ND ug/L 10/16/97 ----10 ND ND ND ND ND ug/L 04/21/98 ----10 ND ND ND ND ND ug/L 04/07/99 ----10 ND ND ND ND ND ug/L 10/13/99 ----10 ND ND ND ND ND ug/L 04/05/00 ----10 ND ND ND ND ND ug/L 10/25/00 ----10 ND ND ND ND ND ug/L 04/04/01 ----10 ND ND ND ND ND ug/L 04/08/02 ----10 ND ND ND ND ND ug/L 10/21/02 ----10 ND ND ND ND ND ug/L 04/14/03 ----10 ND ND ND ND ND ug/L 10/01/03 ----10 ND ND ND ND ND ug/L 04/05/04 ----10 ND ND ND ND ND ug/L 10/18/04 ----10 ND ND ND ND ND ug/L 04/07/05 ----10 ND ND ND ND ND ug/L 10/06/05 ----10 ND ND ND ND ND ug/L 04/03/06 ----10 ND ND ND ND ND ug/L 10/03/06 ----10 ND ND ND ND ND ug/L 04/05/07 ----10 ND ND ND ND ND ug/L 10/18/07 ----10 --1.3 J --0.9 J ND ug/L 04/29/08 ----6 ND ND ND ND ND ug/L 10/23/08 ----10 Dry ND ND ND ND ug/L 04/07/09 ----10 ND ND ND ND ND ug/L 10/19/09 ----10 Dry 6.16 J Dry ND ND ug/L 04/29/10 ----10 3.18 J ND ND 3.39 J ND ug/L 10/13/10 ----10 ND ND 4.15 J ND ND ug/L 04/11/11 ----10 3.69 J 3.83 J ND ND ND ug/L 10/03/11 ----10 ND 4.44 J ND ND ND ug/L 04/10/12 ----10 ND ND ND ND 3.79 J ug/L 10/15/12 ----10 ND ND ND ND ND ug/L 04/09/13 ----10 ND ND ND ND ND ug/L 10/08/13 ----10 ND ND ND ND ND ug/L 04/08/14 ----10 ND ND ND ND ND ug/L 10/08/14 5.4 --10 ND dry ND ND ND ug/L 04/08/15 5.4 --10 ND ND ND ND ND ug/L 10/28/15 5.4 --10 ND ND ND ND ND ug/L 04/05/16 6.8 --10 ND ND ND ND ND ug/L 10/04/16 6.8 --10 ND ND ND ND ND ug/L 04/03/17 6.8 --10 ND ND ND ND ND ug/L 10/03/17 6.8 --10 ND ND Dry ND ND ug/L 05/22/18 6.8 --10 7.34 J ND ND ND ND ug/L 10/23/18 7.6 10 --ND ND ND ND ND ug/L 04/16/19 7.6 10 --ND ND ND ND ND ug/L 10/16/19 7.6 10 --Dry ND Dry ND ND ug/L 04/14/20 7.6 10 --ND ND ND ND ND ug/L 10/07/20 7.6 10 --ND ND ND ND ND ug/L 05/10/21 7.6 10 --ND ND ND ND ND ug/L 10/06/21 7.6 10 --Dry ND ND ND ND ug/L 05/18/22 7.6 10 --ND ND ND ND ND ug/L 10/10/22 6.4 20 --DRY ND DRY ND ND Closed Randolph County Landfill, Permit No. 76-01 Summary of Historical Surface Water Monitoring Results TABLE 6 Downstream BlanksDetected Monitoring Constituent/Parameter Units Date SWS Reporting LimitDetection Quantitation 1 of 12 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 BlanksDetected Monitoring Constituent/Parameter Units Date SWS Reporting LimitDetection Quantitation Barium ug/L 09/22/94 ----500 ND ND ND ND ND Human Health SW Standard = 200000 ug/L ug/L 11/08/94 ----500 ND ND ND ND ND ug/L 01/18/95 ----500 ND ND ND ND ND ug/L 04/23/96 ----500 ND ND ND ND ND ug/L 06/17/97 ----500 ND ND ND ND ND ug/L 10/16/97 ----500 ND ND ND ND ND ug/L 04/21/98 ----500 ND ND ND ND ND ug/L 04/07/99 ----500 ND ND ND ND ND ug/L 10/13/99 ----500 ND ND ND ND ND ug/L 04/05/00 ----500 ND ND ND ND ND ug/L 10/25/00 ----500 ND ND ND ND ND ug/L 04/04/01 ----500 ND ND ND ND ND ug/L 04/08/02 ----500 ND ND ND ND ND ug/L 10/21/02 ----500 ND ND ND ND ND ug/L 04/14/03 ----500 ND ND ND ND ND ug/L 10/01/03 ----500 ND ND ND ND ND ug/L 04/05/04 ----500 ND ND ND ND ND ug/L 10/18/04 ----500 ND ND ND ND ND ug/L 04/07/05 ----500 ND ND ND ND ND ug/L 10/06/05 ----500 ND ND ND ND ND ug/L 04/03/06 ----500 ND ND ND ND ND ug/L 10/03/06 ----500 ND ND ND ND ND ug/L 04/05/07 ----100 ND ND ND ND ND ug/L 10/18/07 ----100 --17.7 J --23.2 J 0.04 J ug/L 04/29/08 ----100 65.6 J 33.4 J 64.5 J 27.5 J 0.2 J ug/L 10/23/08 ----100 Dry 32.2 J 37.1 J 35.8 J ND ug/L 04/07/09 ----100 23.5 J 24.9 J 41.4 J 27.2 J ND ug/L 10/19/09 ----100 Dry 28.5 J Dry 26.6 J ND ug/L 04/29/10 ----100 29.1 J 32.4 J 57.1 J 23.3 J ND ug/L 10/13/10 ----100 98.8 J 20.1 J 58.3 J 34.7 J ND ug/L 04/11/11 ----100 30.5 J 25.0 J 30.3 J 25.5 J ND ug/L 10/03/11 ----100 21.8 J 47.0 J 24.6 J 22.7 J ND ug/L 04/10/12 ----100 24.6 J 29.2 J 27.5 J 26.3 J ND ug/L 10/15/12 ----100 25.4 J 21.1 J 28.7 J 21.5 J 1.04 J ug/L 04/09/13 ----100 22.7 J 23.9 J 30.1 J 21.9 J ND ug/L 10/08/13 ----100 27.3 J 37.8 J 22.0 J 21.7 J ND ug/L 04/08/14 ----100 35.0 J 24.0 J 47.3 J 24.2 J 1.09 ug/L 10/08/14 1.0 --100 23.2 J dry 22.6 J 24.1 J 3.14 J ug/L 04/08/15 1.0 --100 22.9 J 24.0 J 30.9 J 26.4 J ND ug/L 10/28/15 1.0 --100 28.3 J 23.5 J 28.7 J 33.6 J 1.20 J ug/L 04/05/16 1.0 --100 18.0 J 24.9 J 27.3 J 23.5 J ND ug/L 10/04/16 1.0 --100 43.3 J 46.3 J 37.4 J 26.4 J ND ug/L 04/03/17 1.0 --100 18.2 J 22.2 J 28.7 J 22.5 J ND ug/L 10/03/17 1.0 --100 25.7 J 20.9 J Dry 20.0 J 2.77 J ug/L 05/22/18 1.0 --100 28.9 J 24.1 J 29.0 J 25.0 J ND ug/L 10/23/18 1.1 10 --22.2 20.4 27.4 20.1 ND ug/L 04/16/19 1.1 10 --25.8 22.8 31.2 22.2 ND ug/L 10/16/19 1.1 10 --Dry 19.8 Dry 20.9 ND ug/L 04/14/20 1.1 10 --33.0 22.6 30.4 21.0 ND ug/L 10/07/20 1.1 10 --30.2 21.4 39.4 16.6 ND ug/L 05/10/21 1.1 10 --22.0 17.8 26.1 18.5 ND ug/L 10/06/21 1.1 10 --Dry 42.4 19.6 16.6 ND ug/L 05/18/22 1.1 10 --35.3 46.0 36.5 25.0 ND ug/L 10/10/22 4.4 10 --DRY 69 DRY 28 ND ug/L 05/22/23 4.4 10 --45.5 32.8 20.8 19.1 ND Beryllium ug/L 09/22/94 ----2 ND ND ND ND ND Freshwater Acute SW Standard = 65 ug/L ug/L 11/08/94 ----2 ND ND ND ND ND Freshwater Chronic SW Standard = 6.5 ug/L ug/L 01/18/95 ----2 ND ND ND ND ND ug/L 04/23/96 ----2 ND ND ND ND ND ug/L 06/17/97 ----2 ND ND ND ND ND ug/L 10/16/97 ----2 ND ND ND ND ND ug/L 04/21/98 ----2 ND 21 ND ND ND ug/L 04/07/99 ----2 ND ND ND ND ND ug/L 10/13/99 ----2 ND ND ND ND ND ug/L 04/05/00 ----2 ND ND ND ND ND ug/L 10/25/00 ----2 ND ND ND ND ND ug/L 04/04/01 ----2 ND ND ND ND ND ug/L 04/08/02 ----2 ND ND ND ND ND ug/L 10/21/02 ----2 ND ND ND ND ND ug/L 04/14/03 ----2 ND ND ND ND ND ug/L 10/01/03 ----2 ND ND ND ND ND ug/L 04/05/04 ----2 ND ND ND ND ND ug/L 10/18/04 ----2 ND ND ND ND ND ug/L 04/07/05 ----2 ND ND ND ND ND ug/L 10/06/05 ----2 ND ND ND ND ND ug/L 04/03/06 ----2 ND ND ND ND ND ug/L 10/03/06 ----2 ND ND ND ND ND ug/L 04/05/07 ----1 ND ND ND ND ND ug/L 10/18/07 ----1 ND ND ND ND ND ug/L 04/29/08 ----1 ND ND ND ND ND ug/L 10/23/08 ----1 Dry ND ND ND ND ug/L 04/07/09 ----1 ND ND ND ND ND ug/L 10/19/09 ----1 Dry 0.104 B Dry 0.127 B 0.174 J ug/L 04/29/10 ----1 ND ND ND ND ND ug/L 10/13/10 ----1 ND ND ND ND ND ug/L 04/11/11 ----1 ND ND ND ND ND ug/L 10/03/11 ----1 ND ND ND ND ND ug/L 04/10/12 ----1 ND ND ND ND ND ug/L 10/15/12 ----1 ND ND ND ND ND ug/L 04/09/13 ----1 ND ND ND ND ND ug/L 10/08/13 ----1 ND ND ND ND ND ug/L 04/08/14 ----1 ND ND ND ND ND ug/L 10/08/14 0.10 --1 ND dry ND ND ND ug/L 04/08/15 0.10 --1 ND ND ND ND ND ug/L 10/28/15 0.10 --1 ND ND ND ND ND ug/L 04/05/16 0.10 --1 ND ND ND ND ND ug/L 10/04/16 0.10 --1 ND ND ND ND ND ug/L 04/03/17 0.10 --1 ND ND ND ND ND ug/L 10/03/17 0.13 --1 ND ND Dry ND 0.233 J ug/L 05/22/18 0.13 --1 ND ND ND ND ND ug/L 10/23/18 0.16 1 --ND ND ND ND ND ug/L 04/16/19 0.16 1 --ND ND ND ND ND ug/L 10/16/19 0.16 1 --Dry ND Dry ND ND ug/L 04/14/20 0.16 1 --ND ND ND ND ND ug/L 10/07/20 0.16 1 --ND ND ND ND 0.207 ug/L 05/10/21 0.16 1 --ND ND ND ND ND ug/L 10/06/21 0.16 1 --Dry ND ND ND ND ug/L 05/18/22 0.16 1 --ND ND ND ND ND ug/L 10/10/22 0.30 4.0 --DRY 0.63 J DRY ND ND 2 of 12 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 BlanksDetected Monitoring Constituent/Parameter Units Date SWS Reporting LimitDetection Quantitation Cadmium ug/L 09/22/94 ----1 ND ND ND ND ND Freshwater Acute SW Standard = ug/L 11/08/94 ----1 ND ND ND ND ND SW-1 - 1.93 ug/L ug/L 01/18/95 ----1 ND ND ND ND ND SW-2 - 2.18 ug/L ug/L 04/23/96 ----1 ND ND ND ND ND SW-3 - 2.03 ug/L ug/L 06/17/97 ----1 2 2 --ND ND SW-4 - 2.48 ug/L ug/L 10/16/97 ----1 ND ND ND ND ND Freshwater Chronic SW Standard =ug/L 04/21/98 ----1 1 ND ND ND ND SW-1 - 0.31 ug/L ug/L 04/07/99 ----1 ND ND ND ND ND SW-2 - 0.35 ug/L ug/L 10/13/99 ----1 ND ND ND ND ND SW-3 - 0.33 ug/L ug/L 04/05/00 ----1 ND ND ND ND ND SW-4 - 0.39 ug/L ug/L 10/25/00 ----1 ND ND ND ND ND ug/L 04/04/01 ----1 ND ND ND ND ND ug/L 04/08/02 ----1 ND ND ND ND ND ug/L 10/21/02 ----1 4 ND ND ND ND ug/L 04/14/03 ----1 2 ND ND ND ND ug/L 10/01/03 ----1 ND ND 2 ND ND ug/L 04/05/04 ----1 1 ND ND ND ND ug/L 10/18/04 ----1 ND ND ND ND ND ug/L 04/07/05 ----1 ND ND ND ND ND ug/L 10/06/05 ----1 ND ND ND ND ND ug/L 04/03/06 ----1 ND ND ND ND ND ug/L 10/03/06 ----1 ND ND ND ND ND ug/L 04/05/07 ----1 ND ND ND ND ND ug/L 10/18/07 ----1 --0.2 J --0.7 J ND ug/L 04/29/08 ----1 ND ND ND ND ND ug/L 10/23/08 ----1 Dry ND ND ND ND ug/L 04/07/09 ----1 0.10 J ND 0.13 J 0.12 J ND ug/L 10/19/09 ----1 Dry ND Dry ND ND ug/L 04/29/10 ----1 ND ND ND ND ND ug/L 10/13/10 ----1 ND ND ND ND ND ug/L 04/11/11 ----1 ND ND ND ND ND ug/L 10/03/11 ----1 ND ND 0.625 J ND ND ug/L 04/10/12 ----1 ND ND ND ND ND ug/L 10/15/12 ----1 ND ND ND ND 0.433 J ug/L 04/09/13 ----1 ND ND ND ND ND ug/L 10/08/13 ----1 ND ND ND ND ND ug/L 04/08/14 ----1 ND ND ND ND ND ug/L 10/08/14 0.36 --1 ND dry ND 0.889 J ND ug/L 04/08/15 0.36 --1 ND 0.838 B ND 2.36 0.427 J ug/L 10/28/15 0.36 --1 ND ND ND ND ND ug/L 04/05/16 0.36 --1 ND ND ND ND ND ug/L 10/04/16 0.36 --1 ND ND ND ND ND ug/L 04/03/17 0.36 --1 ND ND ND ND ND ug/L 10/03/17 0.36 --1 ND ND Dry ND ND ug/L 05/22/18 0.36 --1 ND ND ND ND ND ug/L 10/23/18 0.36 1 --ND ND ND ND ND ug/L 04/16/19 0.36 1 --ND ND ND ND ND ug/L 10/16/19 0.36 1 --Dry ND Dry ND ND ug/L 04/14/20 0.36 1 --ND ND ND ND ND ug/L 10/07/20 0.36 1 --ND ND ND ND ND ug/L 05/10/21 0.36 1 --ND ND ND ND ND ug/L 10/06/21 0.36 1 --Dry ND ND ND ND ug/L 05/18/22 0.36 1 --ND ND ND ND ND ug/L 10/10/22 0.44 5.0 --DRY ND DRY ND ND ug/L 05/22/23 0.44 5 --ND ND ND ND ND Chromium ug/L 09/22/94 ----10 ND ND ND ND ND Freshwater Acute SW Standard =ug/L 11/08/94 ----10 ND ND ND ND ND SW-1 - 410 ug/L ug/L 01/18/95 ----10 ND ND ND ND ND SW-2 - 460 ug/L ug/L 04/23/96 ----10 ND ND ND ND ND SW-3 - 430 ug/L ug/L 06/17/97 ----10 ND ND ND ND ND SW-4 - 518 ug/L ug/L 10/16/97 ----10 ND ND ND ND ND Freshwater Chronic SW Standard = ug/L 04/21/98 ----10 20 ND ND 15 ND SW-1 - 53.4 ug/L ug/L 04/07/99 ----10 ND ND ND ND ND SW-2 - 59.8 ug/L ug/L 10/13/99 ----10 ND ND ND ND ND SW-3 - 56.0 ug/L ug/L 04/05/00 ----10 ND ND ND ND ND SW-4 - 67.4 ug/L ug/L 10/25/00 ----10 22 ND ----ND ug/L 04/04/01 ----10 ND ND ND ND ND ug/L 04/08/02 ----10 ND ND ND ND ND ug/L 10/21/02 ----10 ND ND ND ND ND ug/L 04/14/03 ----10 ND ND ND ND ND ug/L 10/01/03 ----10 ND ND 121 ND ND ug/L 04/05/04 ----10 ND ND ND ND ND ug/L 10/18/04 ----10 ND ND ND ND ND ug/L 04/07/05 ----10 ND ND ND ND ND ug/L 10/06/05 ----10 ND ND ND ND ND ug/L 04/03/06 ----10 ND ND ND ND ND ug/L 10/03/06 ----10 ND ND ND ND ND ug/L 04/05/07 ----10 ND ND ND ND ND ug/L 10/18/07 ----10 --5.6 J --2.3 J ND ug/L 04/29/08 ----10 2.7 J ND 4.6 J ND ND ug/L 10/23/08 ----10 Dry ND ND ND ND ug/L 04/07/09 ----10 ND ND ND ND ND ug/L 10/19/09 ----10 Dry 1.64 J Dry 1.58 J ND ug/L 04/29/10 ----10 1.21 J 1.36 J ND ND ND ug/L 10/13/10 ----10 6.61 J 4.10 J ND 2.58 J ND ug/L 04/11/11 ----10 5.92 J 2.02 J 4.49 J 1.90 J ND ug/L 10/03/11 ----10 ND ND ND ND ND ug/L 04/10/12 ----10 1.13 J ND 1.42 J ND ND ug/L 10/15/12 ----10 ND ND ND ND ND ug/L 04/09/13 ----10 ND 1.86 J ND ND ND ug/L 10/08/13 ----10 ND ND ND ND ND ug/L 04/08/14 ----10 2.79 J ND ND ND ND ug/L 10/08/14 1.4 --10 ND dry 2.55 J 2.38 J ND ug/L 04/08/15 1.4 --10 ND ND ND ND ND ug/L 10/28/15 1.4 --10 ND ND ND ND ND ug/L 04/05/16 1.4 --10 ND ND ND ND ND ug/L 10/04/16 1.4 --10 ND 1.42 J ND 1.77 J ND ug/L 04/03/17 1.1 --10 ND ND ND ND 4.45 J ug/L 10/03/17 1.4 --10 ND ND Dry ND ND ug/L 05/22/18 1.4 --10 2.03 J ND ND ND ND ug/L 10/23/18 1.4 10 --ND 1.55 J ND 1.46 J ND ug/L 04/16/19 1.4 10 --ND ND ND ND ND ug/L 10/16/19 1.4 10 --Dry ND Dry ND ND ug/L 04/14/20 1.4 10 --ND ND ND ND ND ug/L 10/07/20 1.4 10 --1.56 J ND ND ND ND ug/L 05/10/21 1.4 10 --ND ND ND ND ND ug/L 10/06/21 1.4 10 --Dry ND ND ND ND ug/L 05/18/22 1.4 10 --ND ND ND ND ND ug/L 10/10/22 1.1 10 --DRY 28 DRY ND ND 3 of 12 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 BlanksDetected Monitoring Constituent/Parameter Units Date SWS Reporting LimitDetection Quantitation Cobalt ug/L 09/22/94 ----10 ND ND 37 ND ND No SW Standard ug/L 11/08/94 ----10 ND --37 --ND ug/L 01/18/95 ----10 ND ND ND ND ND ug/L 04/23/96 ----10 ND ND ND ND ND ug/L 06/17/97 ----10 ND ND ND ND ND ug/L 10/16/97 ----10 ND ND 17 ND ND ug/L 04/21/98 ----10 ND ND ND 13 ND ug/L 04/07/99 ----10 ND ND ND ND ND ug/L 10/13/99 ----10 ND ND ND ND ND ug/L 04/05/00 ----10 ND ND ND ND ND ug/L 10/25/00 ----10 29 ND ----ND ug/L 04/04/01 ----10 ND ND ND ND ND ug/L 04/08/02 ----10 ND ND ND ND ND ug/L 10/21/02 ----10 ND ND ND ND ND ug/L 04/14/03 ----10 ND ND ND ND ND ug/L 10/01/03 ----10 ND ND 112 ND ND ug/L 04/05/04 ----10 ND ND ND ND ND ug/L 10/18/04 ----10 ND ND 12 ND ND ug/L 04/07/05 ----10 ND ND ND ND ND ug/L 10/06/05 ----10 ND ND ND ND ND ug/L 04/03/06 ----10 ND ND ND ND ND ug/L 10/03/06 ----10 ND ND ND ND ND ug/L 04/05/07 ----10 ND ND ND ND ND ug/L 10/18/07 ----10 --1.5 J --1.0 J ND ug/L 04/29/08 ----10 5.8 J ND 5.2 J ND ND ug/L 10/23/08 ----10 Dry ND 2.6 J ND ND ug/L 04/07/09 ----10 ND ND 1.7 J 0.9 J ND ug/L 10/19/09 ----10 Dry ND Dry ND ND ug/L 04/29/10 ----10 2.59 J 1.35 J 2.10 J ND ND ug/L 10/13/10 ----10 12.9 ND 10.8 1.86 J ND ug/L 04/11/11 ----10 2.58 J ND ND ND ND ug/L 10/03/11 ----10 ND 1.13 J 1.11 J ND ND ug/L 04/10/12 ----10 1.70 J ND ND ND ND ug/L 10/15/12 ----10 ND 1.34 J ND 1.17 J ND ug/L 04/09/13 ----10 1.26 J ND ND ND ND ug/L 10/08/13 ----10 ND ND ND ND ND ug/L 04/08/14 ----10 2.73 J ND 1.70 J ND ND ug/L 10/08/14 1.1 --10 ND dry ND ND ND ug/L 04/08/15 1.1 --10 ND ND ND ND ND ug/L 10/28/15 1.1 --10 1.90 J 1.11 J ND 1.43 J ND ug/L 04/05/16 1.1 --10 ND ND 1.22 J ND ND ug/L 10/04/16 1.1 --10 3.74 J 1.21 J 1.11 J ND ND ug/L 04/03/17 1.1 --10 ND 1.13 J ND ND ND ug/L 10/03/17 1.1 --10 ND ND Dry ND ND ug/L 05/22/18 1.1 --10 ND 1.11 J ND ND ND ug/L 10/23/18 1.4 10 --ND ND ND ND ND ug/L 04/16/19 1.4 10 --ND ND 2.17 J ND ND ug/L 10/16/19 1.4 10 --Dry ND Dry ND ND ug/L 04/14/20 1.4 10 --2.06 J ND ND ND ND ug/L 10/07/20 1.4 10 --ND 1.88 J 1.92 J ND ND ug/L 05/10/21 1.4 10 --ND ND ND ND ND ug/L 10/06/21 1.4 10 --Dry ND ND ND ND ug/L 05/18/22 1.4 10 --ND ND ND ND ND ug/L 10/10/22 1.4 10 --DRY 8.5 J DRY ND ND ug/L 05/22/23 1.4 10 --3.88 J ND ND ND ND Copper ug/L 09/22/94 ----200 ND ND ND ND ND Freshwater Acute SW Standard =ug/L 11/08/94 ----200 ND ND ND ND ND SW-1 - 9.22 ug/L ug/L 01/18/95 ----200 ND ND ND ND ND SW-2 - 10.5 ug/L ug/L 04/23/96 ----200 ND ND ND ND ND SW-3 - 9.73 ug/L ug/L 06/17/97 ----200 ND ND ND ND ND SW-4 - 12.0 ug/L ug/L 10/16/97 ----200 ND ND ND ND ND Freshwater Chronic SW Standard = ug/L 04/21/98 ----200 ND ND ND ND ND SW-1 - 6.36 ug/L ug/L 04/07/99 ----200 ND ND ND ND ND SW-2 - 7.16 ug/L ug/L 10/13/99 ----200 ND ND ND ND ND SW-3 - 6.68 ug/L ug/L 04/05/00 ----200 ND ND ND ND ND SW-4 - 8.11 ug/L ug/L 10/25/00 ----200 ND ND ND ND ND ug/L 04/04/01 ----200 ND ND ND ND ND ug/L 04/08/02 ----200 ND ND ND ND ND ug/L 10/21/02 ----200 ND ND ND ND ND ug/L 04/14/03 ----200 ND ND ND ND ND ug/L 10/01/03 ----200 ND ND ND ND ND ug/L 04/05/04 ----200 ND ND ND ND ND ug/L 10/18/04 ----200 ND ND ND ND ND ug/L 04/07/05 ----200 ND ND ND ND ND ug/L 10/06/05 ----200 ND ND ND ND ND ug/L 04/03/06 ----200 ND ND ND ND ND ug/L 10/03/06 ----200 ND ND ND ND ND ug/L 04/05/07 ----10 ND ND ND ND ND ug/L 10/18/07 ----10 5.4 J ND 3.7 J ND 0.7 J ug/L 04/29/08 ----10 6.0 J 5.2 J 9.1 J 0.9 B 0.9 J ug/L 10/23/08 ----10 Dry ND 2.1 J ND ND ug/L 04/07/09 ----10 ND 1.31 J ND 1.74 J ND ug/L 10/19/09 ----10 Dry ND Dry ND 1.60 J ug/L 04/29/10 ----10 ND 2.90 J ND 1.97 J ND ug/L 10/13/10 ----10 12.7 3.32 B 4.34 B 4.68 B 1.60 J ug/L 04/11/11 ----10 3.54 J 3.47 J 3.56 J 4.27 J ND ug/L 10/03/11 ----10 ND 4.85 J 3.35 J ND ND ug/L 04/10/12 ----10 ND ND 3.22 J 2.10 J ND ug/L 10/15/12 ----10 ND ND ND ND ND ug/L 04/09/13 ----10 1.72 J 3.49 J ND 1.72 J ND ug/L 10/08/13 ----10 ND ND ND 1.80 J ND ug/L 04/08/14 ----10 3.04 J 2.38 J ND 2.35 J ND ug/L 10/08/14 1.6 --10 2.90 J dry 2.51 J 5.56 J ND ug/L 04/08/15 1.6 --10 ND 6.03 B ND 8.15 B 3.01 J ug/L 10/28/15 1.6 --10 ND ND ND 1.68 J ND ug/L 04/05/16 1.6 --10 ND 3.52 B ND 2.87 B 3.64 J ug/L 10/04/16 1.6 --10 3.54 B 5.42 B 3.00 B 6.03 B 5.15 J ug/L 04/03/17 0.87 --10 ND 4.76 B ND 5.01 B 3.21 J ug/L 10/03/17 1.6 --10 1.82 B 3.78 B Dry 4.14 B 4.84 J ug/L 05/22/18 1.6 --10 1.80 J 2.57 J ND 3.26 J ND ug/L 10/23/18 1.6 10 --2.16 B 5.99 B 6.38 B 4.87 B 1.97 J ug/L 04/16/19 1.6 10 --ND 3.36 J 1.73 J 2.40 J ND ug/L 10/16/19 1.6 10 --Dry 2.96 J Dry 2.51 J ND ug/L 04/14/20 1.6 10 --2.13 J 2.71 J 3.02 J 2.20 J ND ug/L 10/07/20 1.6 10 --ND 3.96 J ND 4.22 J ND ug/L 05/10/21 1.6 10 --ND ND ND ND ND ug/L 10/06/21 1.6 10 --Dry ND ND 1.73 J ND ug/L 05/18/22 1.6 10 --13.4 15.6 13.3 15.6 ND ug/L 10/10/22 3.2 20 --DRY 73 DRY ND ND 4 of 12 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 BlanksDetected Monitoring Constituent/Parameter Units Date SWS Reporting LimitDetection Quantitation Lead ug/L 09/22/94 ----10 ND ND ND ND ND Freshwater Acute SW Standard =ug/L 11/08/94 ----10 ND ND ND ND ND SW-1 - 41.7 ug/L ug/L 01/18/95 ----10 ND ND ND ND ND SW-2 - 48.5 ug/L ug/L 04/23/96 ----10 ND ND ND ND ND SW-3 - 44.4 ug/L ug/L 06/17/97 ----10 ND 15 --11 ND SW-4 - 56.9 ug/L ug/L 10/16/97 ----10 ND ND ND ND ND Freshwater Chronic SW Standard = ug/L 04/21/98 ----10 ND ND ND 16 ND SW-1 - 1.62 ug/L ug/L 04/07/99 ----10 ND ND ND ND ND SW-2 - 1.89 ug/L ug/L 10/13/99 ----10 ND ND ND ND ND SW-3 - 1.73 ug/L ug/L 04/05/00 ----10 ND ND ND ND ND SW-4 - 2.22 ug/L ug/L 10/25/00 ----10 ND ND ND ND ND ug/L 04/04/01 ----10 ND ND 12 ND ND ug/L 04/08/02 ----10 ND ND ND ND ND ug/L 10/21/02 ----10 ND ND ND ND ND ug/L 04/14/03 ----10 ND ND ND ND ND ug/L 10/01/03 ----10 ND ND 41 ND ND ug/L 04/05/04 ----10 ND ND ND ND ND ug/L 10/18/04 ----10 ND ND ND ND ND ug/L 04/07/05 ----10 ND ND ND ND ND ug/L 10/06/05 ----10 ND ND ND ND ND ug/L 04/03/06 ----10 ND ND ND ND ND ug/L 10/03/06 ----10 ND ND ND ND ND ug/L 04/05/07 ----10 ND ND ND ND ND ug/L 10/18/07 ----10 --0.6 J --0.6 J ND ug/L 04/29/08 ----10 2.6 J 3.8 J ND ND ND ug/L 10/23/08 ----10 Dry ND ND ND ND ug/L 04/07/09 ----10 ND ND ND ND ND ug/L 10/19/09 ----10 Dry ND Dry ND ND ug/L 04/29/10 ----10 ND ND ND ND ND ug/L 10/13/10 ----10 2.51 J ND 2.87 J ND ND ug/L 04/11/11 ----10 ND ND ND ND ND ug/L 10/03/11 ----10 ND 2.26 J 2.16 J ND ND ug/L 04/10/12 ----10 2.55 B 2.03 B 2.19 B 2.39 B 2.22 J ug/L 10/15/12 ----10 ND ND ND ND ND ug/L 04/09/13 ----10 ND ND ND ND ND ug/L 10/08/13 ----10 ND ND ND ND ND ug/L 04/08/14 ----10 ND ND ND 2.15 J ND ug/L 10/08/14 2.1 --10 ND dry ND ND ND ug/L 04/08/15 2.1 --10 ND ND ND ND ND ug/L 10/28/15 2.1 --10 ND ND ND ND ND ug/L 04/05/16 3.1 --10 ND ND ND ND ND ug/L 10/04/16 3.1 --10 ND ND ND ND ND ug/L 04/03/17 3.1 --10 ND ND ND ND ND ug/L 10/03/17 3.1 --10 ND ND Dry ND ND ug/L 05/22/18 3.1 --10 ND ND ND ND ND ug/L 10/23/18 3.1 10 --ND ND ND ND ND ug/L 04/16/19 3.1 10 --ND ND 3.4 (ND)J ND ND ug/L 10/16/19 3.1 10 --Dry ND Dry ND ND ug/L 04/14/20 3.1 10 --ND ND ND ND 3.83 J ug/L 10/07/20 3.1 10 --ND ND ND ND ND ug/L 05/10/21 3.1 10 --ND ND ND ND ND ug/L 10/06/21 3.1 10 --Dry ND ND ND ND ug/L 05/18/22 3.1 10 --ND ND ND ND ND ug/L 10/10/22 6.6 10 --DRY 10 DRY ND ND ug/L 05/22/23 6.6 10 --ND ND ND ND ND Nickel ug/L 09/22/94 ----50 ND ND ND ND ND Freshwater Acute SW Standard =ug/L 11/08/94 ----50 ND ND ND ND ND SW-1 - 334 ug/L ug/L 01/18/95 ----50 ND ND ND ND ND SW-2 - 375 ug/L ug/L 04/23/96 ----50 ND ND ND ND ND SW-3 - 350 ug/L ug/L 06/17/97 ----50 ND ND ND ND ND SW-4 - 424 ug/L ug/L 10/16/97 ----50 ND ND ND ND ND Freshwater Chronic SW Standard = ug/L 04/21/98 ----50 ND ND ND ND ND SW-1 - 37.1 ug/L ug/L 04/07/99 ----50 ND ND ND ND ND SW-2 - 41.7 ug/L ug/L 10/13/99 ----50 ND ND ND ND ND SW-3 - 38.9 ug/L ug/L 04/05/00 ----50 ND ND ND ND ND SW-4 - 47.1 ug/L ug/L 10/25/00 ----50 ND ND ND ND ND ug/L 04/04/01 ----50 ND ND ND ND ND ug/L 04/08/02 ----50 ND ND ND ND ND ug/L 10/21/02 ----50 ND ND ND ND ND ug/L 04/14/03 ----50 ND ND ND ND ND ug/L 10/01/03 ----50 ND ND 68 ND ND ug/L 04/05/04 ----50 ND ND ND ND ND ug/L 10/18/04 ----50 ND ND ND ND ND ug/L 04/07/05 ----50 ND ND ND ND ND ug/L 10/06/05 ----50 ND ND ND ND ND ug/L 04/03/06 ----50 ND ND ND ND ND ug/L 10/03/06 ----50 ND ND ND ND ND ug/L 04/05/07 ----50 ND ND ND ND ND ug/L 10/18/07 ----50 --2.7 J --1.9 J ND ug/L 04/29/08 ----50 3.2 J ND 2.5 J ND ND ug/L 10/23/08 ----50 Dry ND ND ND ND ug/L 04/07/09 ----50 ND 1.0 J ND 1.0 J ND ug/L 10/19/09 ----50 Dry ND Dry ND ND ug/L 04/29/10 ----50 ND 7.03 J ND ND ND ug/L 10/13/10 ----50 4.05 J ND ND ND ND ug/L 04/11/11 ----50 17.1 B 4.55 B 17.5 B 4.86 B 3.53 J ug/L 10/03/11 ----50 ND ND ND ND ND ug/L 04/10/12 ----50 ND ND ND ND ND ug/L 10/15/12 ----50 ND ND ND ND ND ug/L 04/09/13 ----50 ND ND ND ND ND ug/L 10/08/13 ----50 ND ND ND ND ND ug/L 04/08/14 ----50 ND ND 2.07 J ND ND ug/L 10/08/14 1.8 --50 ND dry ND ND ND ug/L 04/08/15 1.8 --50 ND ND ND ND ND ug/L 10/28/15 1.8 --50 ND ND ND ND ND ug/L 04/05/16 2.2 --50 ND ND ND ND ND ug/L 10/04/16 2.2 --50 ND ND ND ND ND ug/L 04/03/17 2.2 --50 ND ND ND ND ND ug/L 10/03/17 2.2 --50 ND ND Dry ND 2.66 J ug/L 05/22/18 2.2 --50 ND ND ND ND ND ug/L 10/23/18 2.2 10 --ND ND ND ND ND ug/L 04/16/19 2.2 10 --ND ND ND 3.64 J ND ug/L 10/16/19 2.2 10 --Dry ND Dry ND ND ug/L 04/14/20 2.2 10 --ND ND ND ND ND ug/L 10/07/20 2.2 10 --ND ND ND ND ND ug/L 05/10/21 2.2 10 --ND ND ND ND ND ug/L 10/06/21 2.2 10 --Dry ND ND ND ND ug/L 05/18/22 2.2 10 --ND 5.47 J ND ND ND ug/L 10/10/22 3.3 40 --DRY 17 J DRY ND ND 5 of 12 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 BlanksDetected Monitoring Constituent/Parameter Units Date SWS Reporting LimitDetection Quantitation Selenium ug/L 09/22/94 ----20 ND ND ND ND ND Freshwater Acute SW Standard = 5 ug/L ug/L 11/08/94 ----20 ND ND ND ND ND Freshwater Chronic SW Standard = 5 ug/L ug/L 01/18/95 ----20 ND ND ND ND ND ug/L 04/23/96 ----20 ND ND ND ND ND ug/L 06/17/97 ----20 ND ND ND ND ND ug/L 10/16/97 ----20 ND ND ND ND ND ug/L 04/21/98 ----20 ND ND ND ND ND ug/L 04/07/99 ----20 ND ND ND ND ND ug/L 10/13/99 ----20 ND ND ND ND ND ug/L 04/05/00 ----20 ND ND ND ND ND ug/L 10/25/00 ----20 ND ND ND ND ND ug/L 04/04/01 ----20 ND ND ND ND ND ug/L 04/08/02 ----20 ND ND ND ND ND ug/L 10/21/02 ----20 ND ND ND ND ND ug/L 04/14/03 ----20 ND ND ND ND ND ug/L 10/01/03 ----20 ND ND ND ND ND ug/L 04/05/04 ----20 ND ND ND ND ND ug/L 10/18/04 ----20 ND ND ND ND ND ug/L 04/07/05 ----20 ND ND ND ND ND ug/L 10/06/05 ----20 ND ND ND ND ND ug/L 04/03/06 ----20 ND ND ND ND ND ug/L 10/03/06 ----20 ND ND ND ND ND ug/L 04/05/07 ----10 ND ND ND ND ND ug/L 10/18/07 ----10 --0.6 J ----ND ug/L 04/29/08 ----10 ND ND ND 2.7 B 3.9 J ug/L 10/23/08 ----10 Dry ND ND ND ND ug/L 04/07/09 ----10 ND ND ND ND 3.7 J ug/L 10/19/09 ----10 Dry ND Dry ND ND ug/L 04/29/10 ----10 ND ND ND ND ND ug/L 10/13/10 ----10 0.929 J ND ND ND ND ug/L 04/11/11 ----10 ND ND ND ND 2.85 J ug/L 10/03/11 ----10 ND ND ND ND ND ug/L 04/10/12 ----10 ND ND ND ND ND ug/L 10/15/12 ----10 ND ND ND ND ND ug/L 04/09/13 ----10 ND ND ND ND ND ug/L 10/08/13 ----10 ND ND ND ND ND ug/L 04/08/14 ----10 ND ND ND ND ND ug/L 10/08/14 5.0 --10 ND dry ND ND ND ug/L 04/08/15 5.0 --10 ND ND ND ND ND ug/L 10/28/15 5.0 --10 ND ND ND ND ND ug/L 04/05/16 6.2 --10 ND ND ND ND ND ug/L 10/04/16 6.2 --10 ND ND ND ND ND ug/L 04/03/17 6.2 --10 ND ND ND ND ND ug/L 10/03/17 6.2 --10 ND ND Dry ND ND ug/L 05/22/18 6.2 --10 ND ND ND ND ND ug/L 10/23/18 6.2 10 --ND ND ND ND ND ug/L 04/16/19 6.2 10 --ND ND ND ND ND ug/L 10/16/19 6.2 10 --Dry ND Dry ND ND ug/L 04/14/20 6.2 10 --ND ND ND ND ND ug/L 10/07/20 6.2 10 --ND ND ND ND ND ug/L 05/10/21 6.2 10 --ND ND ND ND ND ug/L 10/06/21 6.2 10 --Dry ND ND ND ND ug/L 05/18/22 6.2 10 --ND ND ND ND ND ug/L 10/10/22 10 20 --DRY ND DRY ND ND ug/L 05/22/23 10 20 --ND ND ND ND ND Silver ug/L 09/22/94 ----10 ND ND ND ND ND Freshwater Acute SW Standard =ug/L 11/08/94 ----10 ND ND ND ND ND SW-1 - 1.62 ug/L ug/L 01/18/95 ----10 ND ND ND ND ND SW-2 - 2.05 ug/L ug/L 04/23/96 ----10 ND ND ND ND ND SW-3 - 1.78 ug/L ug/L 06/17/97 ----10 ND ND ND ND ND SW-4 - 2.63 ug/L ug/L 10/16/97 ----10 ND ND ND ND ND Freshwater Chronic SW Standard = 0.06 ug/L ug/L 04/21/98 ----10 ND ND ND ND ND ug/L 04/07/99 ----10 ND ND ND ND ND ug/L 10/13/99 ----10 ND ND ND ND ND ug/L 04/05/00 ----10 ND ND ND ND ND ug/L 10/25/00 ----10 ND ND ND ND ND ug/L 04/04/01 ----10 ND ND ND ND ND ug/L 04/08/02 ----10 ND ND ND ND ND ug/L 10/21/02 ----10 ND ND ND ND ND ug/L 04/14/03 ----10 ND ND ND ND ND ug/L 10/01/03 ----10 ND ND ND ND ND ug/L 04/05/04 ----10 ND ND ND ND ND ug/L 10/18/04 ----10 ND ND ND ND ND ug/L 04/07/05 ----10 ND ND ND ND ND ug/L 10/06/05 ----10 ND ND ND ND ND ug/L 04/03/06 ----10 ND ND ND ND ND ug/L 10/03/06 ----10 ND ND ND ND ND ug/L 04/05/07 ----10 ND ND ND ND ND ug/L 10/18/07 ----10 --ND --ND ND ug/L 04/29/08 ----10 ND ND ND ND ND ug/L 10/23/08 ----10 Dry ND ND ND ND ug/L 04/07/09 ----10 1.6 B 1.7 B 1.7 B 1.2 B 1.4 J ug/L 10/19/09 ----10 Dry ND Dry ND ND ug/L 04/29/10 ----10 ND ND ND ND ND ug/L 10/13/10 ----10 ND ND ND ND ND ug/L 04/11/11 ----10 ND ND ND ND ND ug/L 10/03/11 ----10 ND ND ND ND ND ug/L 04/10/12 ----10 ND ND ND ND ND ug/L 10/15/12 ----10 ND ND ND ND ND ug/L 04/09/13 ----10 2.04 B 1.98 B 1.94 B ND 2.16 J ug/L 10/08/13 ----10 ND ND ND ND ND ug/L 04/08/14 ----10 ND ND 2.86 B ND 3.31 J ug/L 10/08/14 1.9 --10 ND dry ND ND 2.42 J ug/L 04/08/15 1.9 --10 ND ND ND ND ND ug/L 10/28/15 1.9 --10 ND ND ND ND ND ug/L 04/05/16 1.9 --10 ND ND ND ND ND ug/L 10/04/16 1.9 --10 ND ND ND ND ND ug/L 04/03/17 1.9 --10 ND 2.30 J ND 2.60 J ND ug/L 10/03/17 1.9 --10 ND ND Dry ND ND ug/L 05/22/18 1.9 --10 ND ND ND ND ND ug/L 10/23/18 1.9 10 --ND ND ND ND ND ug/L 04/16/19 1.9 10 --ND ND ND ND ND ug/L 10/16/19 1.9 10 --Dry ND Dry ND ND ug/L 04/14/20 1.9 10 --ND ND ND ND ND ug/L 10/07/20 1.9 10 --ND ND ND ND ND ug/L 05/10/21 1.9 10 --ND ND ND ND ND ug/L 10/06/21 1.9 10 --Dry ND ND ND ND ug/L 05/18/22 1.9 10 --ND ND ND ND ND ug/L 10/10/22 1.5 10 --DRY 5.4 J DRY ND ND 6 of 12 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 BlanksDetected Monitoring Constituent/Parameter Units Date SWS Reporting LimitDetection Quantitation Thallium ug/L 09/22/94 ----10 ND ND ND ND ND No SW Standard ug/L 11/08/94 ----10 ND ND ND ND ND ug/L 01/18/95 ----10 ND ND ND ND ND ug/L 04/23/96 ----10 ND ND ND ND ND ug/L 06/17/97 ----10 ND ND ND ND ND ug/L 10/16/97 ----10 ND ND ND ND ND ug/L 04/21/98 ----10 ND ND ND ND ND ug/L 04/07/99 ----10 ND ND ND ND ND ug/L 10/13/99 ----10 ND ND ND ND ND ug/L 04/05/00 ----100 ND ND ND ND ND ug/L 10/25/00 ----10 ND ND ND ND ND ug/L 04/04/01 ----10 ND ND ND ND ND ug/L 04/08/02 ----10 ND ND ND ND ND ug/L 10/21/02 ----10 ND ND ND ND ND ug/L 04/14/03 ----10 ND ND ND ND ND ug/L 10/01/03 ----10 ND ND ND ND ND ug/L 04/05/04 ----10 ND ND ND ND ND ug/L 10/18/04 ----10 ND ND ND ND ND ug/L 04/07/05 ----10 ND ND ND ND ND ug/L 10/06/05 ----10 ND ND ND ND ND ug/L 04/03/06 ----10 ND ND ND ND ND ug/L 10/03/06 ----10 ND ND ND ND ND ug/L 04/05/07 ----5.5 ND ND ND ND ND ug/L 10/18/07 ----5.5 ND ND ND ND ND ug/L 04/29/08 ----5.5 0.037 J ND ND ND ND ug/L 10/23/08 ----5.5 Dry ND ND ND ND ug/L 04/07/09 ----5.5 0.039 B 0.045 B 0.039 B 0.050 B 0.052 J ug/L 10/19/09 ----5.5 Dry ND Dry ND ND ug/L 04/29/10 ----5.5 ND ND ND ND ND ug/L 10/13/10 ----5.5 ND ND ND ND ND ug/L 04/11/11 ----5.5 ND ND ND ND ND ug/L 10/03/11 ----5.5 ND ND ND ND ND ug/L 04/10/12 ----5.5 ND ND ND ND ND ug/L 10/15/12 ----5.5 ND ND ND ND ND ug/L 04/09/13 ----5.5 ND ND ND ND ND ug/L 10/08/13 ----5.5 ND ND ND ND ND ug/L 04/08/14 ----5.5 ND ND ND ND ND ug/L 10/08/14 0.11 --5.5 ND dry ND ND ND ug/L 04/08/15 0.11 --5.5 ND ND ND ND ND ug/L 10/28/15 0.11 --5.5 ND ND ND ND ND ug/L 04/05/16 0.11 --5.5 ND ND ND ND ND ug/L 10/04/16 0.11 --5.5 ND ND ND ND ND ug/L 04/03/17 0.11 --5.5 0.156 J 0.229 J 0.216 J 0.201 J ND ug/L 10/03/17 0.11 --5.5 0.710 J 0.617 J Dry 0.536 J ND ug/L 05/22/18 0.11 --5.5 ND ND ND ND ND ug/L 10/23/18 0.55 5 --ND ND ND ND ND ug/L 04/16/19 0.11 1 --ND ND ND ND ND ug/L 10/16/19 0.22 2 --Dry ND Dry ND ND ug/L 04/14/20 0.22 2 --ND ND ND ND ND ug/L 10/07/20 0.22 2 --ND ND ND ND ND ug/L 05/10/21 0.22 2 --ND ND ND ND ND ug/L 10/06/21 0.22 2 --Dry ND ND ND ND ug/L 05/18/22 0.22 2 --ND ND ND ND ND ug/L 10/10/22 0.26 1.0 --DRY ND DRY ND ND ug/L 05/22/23 0.26 1 --ND ND ND ND ND Vanadium ug/L 09/22/94 ----40 ND ND ND ND ND No SW Standard ug/L 11/08/94 ----40 ND ND ND ND ND ug/L 01/18/95 ----40 ND ND ND ND ND ug/L 04/23/96 ----40 ND ND ND ND ND ug/L 06/17/97 ----40 ND ND ND ND ND ug/L 10/16/97 ----40 ND ND ND ND ND ug/L 04/21/98 ----40 ND ND ND ND ND ug/L 04/07/99 ----40 ND ND ND ND ND ug/L 10/13/99 ----40 ND ND ND ND ND ug/L 04/05/00 ----40 ND ND ND ND ND ug/L 10/25/00 ----40 57 ND ND ND ND ug/L 04/04/01 ----40 ND ND ND ND ND ug/L 04/08/02 ----40 ND ND ND ND ND ug/L 10/21/02 ----40 ND ND ND ND ND ug/L 04/14/03 ----40 ND ND ND ND ND ug/L 10/01/03 ----40 ND ND 351 ND ND ug/L 04/05/04 ----40 ND ND ND ND ND ug/L 10/18/04 ----40 ND ND ND ND ND ug/L 04/07/05 ----40 ND ND ND ND ND ug/L 10/06/05 ----40 ND ND ND ND ND ug/L 04/03/06 ----40 ND ND ND ND ND ug/L 10/03/06 ----40 ND ND ND ND ND ug/L 04/05/07 ----40 ND ND ND ND ND ug/L 10/18/07 ----25 --1.8 J --2.3 J ND ug/L 04/29/08 ----25 7.9 J 3.8 J 20 J ND ND ug/L 10/23/08 ----25 Dry ND ND ND ND ug/L 04/07/09 ----25 1.3 J 1.2 J ND 1.4 J ND ug/L 10/19/09 ----25 Dry 1.86 J Dry 1.51 J ND ug/L 04/29/10 ----25 4.82 J 2.21 J ND 1.70 J ND ug/L 10/13/10 ----25 27.2 1.71 J 9.78 J 4.14 J ND ug/L 04/11/11 ----25 5.17 J 2.06 J 2.24 J 2.66 J ND ug/L 10/03/11 ----25 1.80 J ND 2.35 J 1.82 J ND ug/L 04/10/12 ----25 2.67 J ND 2.56 J 1.79 J ND ug/L 10/15/12 ----25 2.64 J 1.62 J ND 1.68 J ND ug/L 04/09/13 ----25 4.04 J 1.87 J ND ND ND ug/L 10/08/13 ----25 1.92 J ND ND ND ND ug/L 04/08/14 ----25 6.83 J 2.94 J 3.72 J 3.03 J ND ug/L 10/08/14 1.4 --25 ND dry ND ND ND ug/L 04/08/15 1.4 --25 ND ND ND ND ND ug/L 10/28/15 1.4 --25 7.18 J 2.73 J 3.63 J 2.63 J ND ug/L 04/05/16 1.4 --25 2.04 J 3.33 J ND 2.92 J ND ug/L 10/04/16 1.4 --25 2.43 J 2.90 J ND 3.99 J ND ug/L 04/03/17 1.4 --25 ND ND 0.177 J ND ND ug/L 10/03/17 1.4 --25 1.53 J 1.84 J Dry 1.95 J ND ug/L 05/22/18 1.4 --25 6.26 J 3.51 J 3.20 J 3.87 J ND ug/L 10/23/18 1.4 10 --ND ND ND ND ND ug/L 04/16/19 1.4 10 --ND 1.72 J 1.93 J 1.98 J ND ug/L 10/16/19 1.4 10 --Dry ND Dry 1.60 J ND ug/L 04/14/20 1.4 10 --ND 1.98 J ND 1.68 J ND ug/L 10/07/20 1.4 10 --ND ND ND ND ND ug/L 05/10/21 1.4 10 --ND ND ND ND ND ug/L 10/06/21 1.4 10 --Dry ND ND ND ND ug/L 05/18/22 1.4 10 --ND ND ND ND ND ug/L 10/10/22 1.0 10 --DRY 62 DRY 2.7 J ND 7 of 12 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 BlanksDetected Monitoring Constituent/Parameter Units Date SWS Reporting LimitDetection Quantitation Zinc ug/L 09/22/94 ----50 62 ND ND ND ND Freshwater Acute SW Standard =ug/L 11/08/94 ----50 ND ND ND ND ND SW-1 - 83.5 ug/L ug/L 01/18/95 ----50 ND ND ND ND ND SW-2 - 93.9 ug/L ug/L 04/23/96 ----50 ND ND ND ND ND SW-3 - 87.7 ug/L ug/L 06/17/97 ----50 85 B 53 B --69 B 72 SW-4 - 106 ug/L ug/L 10/16/97 ----50 ND ND ND ND ND Freshwater Chronic SW Standard = ug/L 04/21/98 ----50 175 ND ND ND ND SW-1 - 84.1 ug/L ug/L 04/07/99 ----50 ND ND ND ND ND SW-2 - 94.7 ug/L ug/L 10/13/99 ----50 121 ND ND ND ND SW-3 - 88.4 ug/L ug/L 04/05/00 ----50 207 ND ND ND ND SW-4 - 107 ug/L ug/L 10/25/00 ----50 271 ND --ND ND ug/L 04/04/01 ----50 258 ND ND ND ND ug/L 04/08/02 ----50 87 ND ND ND ND ug/L 10/21/02 ----50 ND ND ND ND ND ug/L 04/14/03 ----50 235 ND ND ND ND ug/L 10/01/03 ----50 201 ND 455 ND ND ug/L 04/05/04 ----50 362 ND ND ND ND ug/L 10/18/04 ----50 ND ND ND ND ND ug/L 04/07/05 ----50 304 ND ND ND ND ug/L 10/06/05 ----50 ND ND ND ND ND ug/L 04/03/06 ----50 122 ND ND ND ND ug/L 10/03/06 ----50 ND ND ND ND ND ug/L 04/05/07 ----10 192 ND 13 ND ND ug/L 10/18/07 ----50 --18 --13 1.5 J ug/L 04/29/08 ----10 21.4 B 23.5 B 22.6 B 5.2 B 122 ug/L 10/23/08 ----10 Dry ND ND ND ND ug/L 04/07/09 ----10 4.9 B 6.3 B 32.0 6.9 B 4.2 J ug/L 10/19/09 ----10 Dry 7.91 J Dry 5.11 J ND ug/L 04/29/10 ----10 4.45 J 13.0 12.1 6.14 J ND ug/L 10/13/10 ----10 39.6 5.56 J 7.47 J 18.5 ND ug/L 04/11/11 ----10 5.69 J 4.59 J 6.30 J 4.74 J ND ug/L 10/03/11 ----10 ND 17.2 8.93 J 4.01 J ND ug/L 04/10/12 ----10 5.19 J 4.85 J 8.52 J 4.75 J ND ug/L 10/15/12 ----10 ND ND ND ND ND ug/L 04/09/13 ----10 4.52 J ND 4.69 J 4.00 J ND ug/L 10/08/13 ----10 ND 4.59 J 3.88 J 3.80 J ND ug/L 04/08/14 ----10 7.57 J ND 22.0 ND ND ug/L 10/08/14 3.8 --10 10.3 dry 7.25 J 11.0 ND ug/L 04/08/15 3.8 --10 5.47 J 15.5 ND 19.5 ND ug/L 10/28/15 3.8 --10 4.78 J ND ND 41.6 ND ug/L 04/05/16 4.4 --10 ND 23.8 ND ND ND ug/L 10/04/16 4.4 --10 ND 12.9 ND 5.11 J ND ug/L 04/03/17 4.4 --10 ND ND ND ND ND ug/L 10/03/17 4.4 --10 ND 4.50 J Dry 5.26 J ND ug/L 05/22/18 4.4 --10 5.49 J ND 5.25 J ND ND ug/L 10/23/18 4.4 10 --ND ND ND ND ND ug/L 04/16/19 4.4 10 --ND 5.33 J 7.27 J 9.59 J ND ug/L 10/16/19 4.4 10 --Dry 5.25 J Dry 5.53 J ND ug/L 04/14/20 4.4 10 --ND ND ND ND ND ug/L 10/07/20 4.4 10 --ND ND ND ND ND ug/L 05/10/21 4.4 10 --ND ND ND ND ND ug/L 10/06/21 4.4 10 --Dry ND ND ND ND ug/L 05/18/22 4.4 10 --11.9 5.26 J ND 4.94 J ND ug/L 10/10/22 8.7 20 --DRY 82 DRY ND ND ug/L 05/22/23 8.7 20 --ND ND ND ND ND Acetone ug/L 09/22/94 ----100 ND ND ND ND ND Freshwater SW Standard = 2000 ug/L ug/L 11/08/94 ----100 ND ND ND ND ND ug/L 01/18/95 ----100 ND ND ND ND ND ug/L 04/23/96 ----100 ND ND ND ND ND ug/L 06/17/97 ----100 ND ND ND ND ND ug/L 10/16/97 ----100 ND ND ND ND ND ug/L 04/21/98 ----100 ND ND ND ND ND ug/L 04/07/99 ----100 ND ND ND ND ND ug/L 10/13/99 ----100 ND ND ND ND ND ug/L 04/05/00 ----100 ND ND ND ND ND ug/L 10/25/00 ----100 ND ND ND ND ND ug/L 04/04/01 ----100 ND ND ND ND ND ug/L 04/08/02 ----100 ND ND ND ND ND ug/L 10/21/02 ----100 ND ND ND ND ND ug/L 04/14/03 ----100 ND ND ND ND ND ug/L 10/01/03 ----100 ND ND ND ND ND ug/L 04/05/04 ----100 ND ND ND ND ND ug/L 10/18/04 ----100 ND ND ND ND ND ug/L 04/07/05 ----100 ND ND ND ND ND ug/L 10/06/05 ----100 ND ND ND ND ND ug/L 04/03/06 ----100 ND ND ND ND ND ug/L 10/03/06 ----100 ND ND ND ND ND ug/L 04/05/07 ----100 ND ND ND ND ND ug/L 10/18/07 ----100 --2.3 J --1.8 J ND ug/L 04/29/08 ----100 3.9 B ND ND 10 B 2.7 J ug/L 10/23/08 ----100 Dry 5.9 B 6.2 B 5.1 B 5.3 J ug/L 04/07/09 ----100 ND ND ND ND ND ug/L 10/19/09 ----100 Dry ND Dry ND 8.2 J ug/L 04/29/10 ----100 ND ND ND ND ND ug/L 10/13/10 ----100 ND ND ND ND ND ug/L 04/11/11 ----100 ND ND ND ND ND ug/L 10/03/11 ----100 ND ND ND ND ND ug/L 04/10/12 ----100 ND ND ND ND ND ug/L 10/15/12 ----100 ND ND ND ND ND ug/L 04/09/13 ----100 ND ND ND ND ND ug/L 10/08/13 ----100 ND ND ND ND ND ug/L 04/08/14 ----100 ND ND ND ND ND ug/L 10/08/14 12 --100 ND dry ND ND ND ug/L 04/08/15 12 --100 ND 3.2 J ND ND ND ug/L 10/28/15 12 --100 ND ND ND ND ND ug/L 04/05/16 12 --100 ND ND ND ND ND ug/L 10/04/16 10 --100 ND ND ND ND ND ug/L 04/03/17 10 --100 ND ND ND ND ND ug/L 10/03/17 10 --100 ND ND Dry ND ND ug/L 05/22/18 10 --100 ND ND ND ND ND ug/L 10/23/18 10 20 --ND ND ND ND ND ug/L 04/16/19 10 20 --ND ND ND ND ND ug/L 10/16/19 10 20 --Dry ND Dry ND ND ug/L 04/14/20 10 20 --ND ND ND ND ND ug/L 10/07/20 10 20 --ND ND ND ND ND ug/L 05/10/21 10 20 --ND ND ND ND ND ug/L 10/06/21 10 20 --Dry ND ND ND 23 ug/L 05/18/22 10 20 --ND ND ND ND ND ug/L 10/10/22 3.7 10 --DRY ND DRY ND ND 8 of 12 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 BlanksDetected Monitoring Constituent/Parameter Units Date SWS Reporting LimitDetection Quantitation Bromodichloromethane ug/L 09/22/94 ----5 ND ND ND ND ND No SW Standard ug/L 11/08/94 ----5 ND ND ND ND ND ug/L 01/18/95 ----5 ND ND ND ND ND ug/L 04/23/96 ----5 ND ND ND ND ND ug/L 06/17/97 ----5 ND ND ND ND ND ug/L 10/16/97 ----5 ND ND ND ND ND ug/L 04/21/98 ----5 ND ND ND ND ND ug/L 04/07/99 ----5 ND ND ND ND ND ug/L 10/13/99 ----5 ND ND ND ND ND ug/L 04/05/00 ----5 ND ND ND ND ND ug/L 10/25/00 ----5 ND ND ND ND ND ug/L 04/04/01 ----5 ND ND ND ND ND ug/L 04/08/02 ----5 ND ND ND ND ND ug/L 10/21/02 ----5 ND ND ND ND ND ug/L 04/14/03 ----5 ND ND ND ND ND ug/L 10/01/03 ----5 ND ND ND ND ND ug/L 04/05/04 ----5 ND ND ND ND ND ug/L 10/18/04 ----5 ND ND ND ND ND ug/L 04/07/05 ----5 ND ND ND ND ND ug/L 10/06/05 ----5 ND ND ND ND ND ug/L 04/03/06 ----5 ND ND ND ND ND ug/L 10/03/06 ----5 ND ND ND ND ND ug/L 04/05/07 ----3 ND ND ND ND ND ug/L 10/18/07 ----1 --1.2 J --0.3 J ND ug/L 04/29/08 ----1 ND ND ND ND ND ug/L 10/23/08 ----1 Dry ND ND ND ND ug/L 04/07/09 ----1 ND ND ND ND ND ug/L 10/19/09 ----1 Dry ND Dry ND ND ug/L 04/29/10 ----1 ND ND ND ND ND ug/L 10/13/10 ----1 ND 3.3 ND ND ND ug/L 04/11/11 ----1 ND ND ND ND ND ug/L 10/03/11 ----1 ND ND ND ND ND ug/L 04/10/12 ----1 ND ND ND ND ND ug/L 10/15/12 ----1 ND ND ND ND ND ug/L 04/09/13 ----1 ND ND ND ND ND ug/L 10/08/13 ----1 ND ND ND ND ND ug/L 04/08/14 ----1 ND ND ND ND ND ug/L 10/08/14 0.17 --1 ND dry ND ND ND ug/L 04/08/15 0.17 --1 ND ND ND ND ND ug/L 10/28/15 0.17 --1 ND ND ND ND ND ug/L 04/05/16 0.17 --1 ND ND ND ND ND ug/L 10/04/16 0.17 --1 ND 0.79 J ND ND ND ug/L 04/03/17 0.17 --1 ND ND ND ND ND ug/L 10/03/17 0.17 --1 ND 0.51 J Dry ND ND ug/L 05/22/18 0.17 --1 ND ND ND ND ND ug/L 10/23/18 0.17 1 --ND ND ND ND ND ug/L 04/16/19 0.17 1 --ND ND ND ND ND ug/L 10/16/19 0.17 1 --Dry ND Dry ND ND ug/L 04/14/20 0.17 1 --ND ND ND ND ND ug/L 10/07/20 0.17 1 --ND ND ND ND ND ug/L 05/10/21 0.17 1 --ND ND ND ND ND ug/L 10/06/21 0.17 1 --Dry ND ND ND ND ug/L 05/18/22 0.17 1 --ND ND ND ND ND ug/L 10/10/22 0.39 1.0 --DRY 0.44 J DRY ND ND 9 of 12 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 BlanksDetected Monitoring Constituent/Parameter Units Date SWS Reporting LimitDetection Quantitation Chloroform ug/L 09/22/94 ----5 ND ND ND ND ND No SW Standard ug/L 11/08/94 ----5 ND ND ND ND ND ug/L 01/18/95 ----5 ND ND ND ND ND ug/L 04/23/96 ----5 ND ND ND ND ND ug/L 06/17/97 ----5 ND ND ND ND ND ug/L 10/16/97 ----5 ND ND ND ND ND ug/L 04/21/98 ----5 ND ND ND ND ND ug/L 04/07/99 ----5 ND ND ND ND ND ug/L 10/13/99 ----5 ND ND ND ND ND ug/L 04/05/00 ----5 ND ND ND ND ND ug/L 10/25/00 ----5 ND ND ND ND ND ug/L 04/04/01 ----5 ND ND ND ND ND ug/L 04/08/02 ----5 ND ND ND ND ND ug/L 10/21/02 ----5 ND ND ND ND ND ug/L 04/14/03 ----5 ND ND ND ND ND ug/L 10/01/03 ----5 ND ND ND ND ND ug/L 04/05/04 ----5 ND ND ND ND ND ug/L 10/18/04 ----5 ND ND ND ND ND ug/L 04/07/05 ----5 ND ND ND ND ND ug/L 10/06/05 ----5 ND ND ND ND ND ug/L 04/03/06 ----5 ND ND ND ND ND ug/L 10/03/06 ----5 ND ND ND ND ND ug/L 04/05/07 ----5 ND ND ND ND ND ug/L 10/18/07 ----5 --2.3 J --0.9 J ND ug/L 04/29/08 ----5 ND ND ND ND ND ug/L 10/23/08 ----5 Dry 0.51 J ND 0.57 J ND ug/L 04/07/09 ----5 ND ND ND ND ND ug/L 10/19/09 ----5 Dry 0.44 J Dry 0.56 J ND ug/L 04/29/10 ----5 ND ND ND ND ND ug/L 10/13/10 ----5 ND 1.6 J ND 0.44 J ND ug/L 04/11/11 ----5 ND ND ND ND ND ug/L 10/03/11 ----5 ND ND ND ND ND ug/L 04/10/12 ----5 ND ND ND 0.34 J ND ug/L 10/15/12 ----5 ND ND ND 0.92 J ND ug/L 04/09/13 ----5 ND ND ND ND ND ug/L 10/08/13 ----5 ND ND ND 0.47 J ND ug/L 04/08/14 ----5 ND ND ND ND ND ug/L 10/08/14 0.18 --5 0.75 J dry ND 0.65 J ND ug/L 04/08/15 0.18 --5 ND ND ND ND ND ug/L 10/28/15 0.18 --5 ND ND ND 0.58 J ND ug/L 04/05/16 0.18 --5 ND ND ND 0.47 J ND ug/L 10/04/16 0.18 --5 ND 1.8 J ND 1.0 J ND ug/L 04/03/17 0.18 --5 ND ND ND ND ND ug/L 10/03/17 0.18 --5 ND ND Dry ND ND ug/L 05/22/18 0.18 --5 ND ND ND ND ND ug/L 10/23/18 0.18 1 --ND ND ND ND ND ug/L 04/16/19 0.18 1 --ND ND ND ND ND ug/L 10/16/19 0.18 1 --Dry 0.62 J Dry ND ND ug/L 04/14/20 0.18 1 --ND ND ND ND ND ug/L 10/07/20 0.18 1 --ND ND ND 0.44 J ND ug/L 05/10/21 0.18 1 --ND ND ND ND ND ug/L 10/06/21 0.18 1 --Dry ND ND ND ND ug/L 05/18/22 0.18 1 --ND 0.53 J ND 0.66 J ND ug/L 10/10/22 0.27 1.0 --DRY 0.89 J DRY 0.49 J ND ug/L 05/22/23 0.18 1 --ND ND 0.725 B 0.733 B 0.205 J Dibromochloromethane ug/L 09/22/94 ----5 ND ND ND ND ND No SW Standard ug/L 11/08/94 ----5 ND ND ND ND ND ug/L 01/18/95 ----5 ND ND ND ND ND ug/L 04/23/96 ----5 ND ND ND ND ND ug/L 06/17/97 ----5 ND ND ND ND ND ug/L 10/16/97 ----5 ND ND ND ND ND ug/L 04/21/98 ----5 ND ND ND ND ND ug/L 04/07/99 ----5 ND ND ND ND ND ug/L 10/13/99 ----5 ND ND ND ND ND ug/L 04/05/00 ----5 ND ND ND ND ND ug/L 10/25/00 ----5 ND ND ND ND ND ug/L 04/04/01 ----5 ND ND ND ND ND ug/L 04/08/02 ----5 ND ND ND ND ND ug/L 10/21/02 ----5 ND ND ND ND ND ug/L 04/14/03 ----5 ND ND ND ND ND ug/L 10/01/03 ----5 ND ND ND ND ND ug/L 04/05/04 ----5 ND ND ND ND ND ug/L 10/18/04 ----5 ND ND ND ND ND ug/L 04/07/05 ----5 ND ND ND ND ND ug/L 10/06/05 ----5 ND ND ND ND ND ug/L 04/03/06 ----5 ND ND ND ND ND ug/L 10/03/06 ----5 ND ND ND ND ND ug/L 04/05/07 ----3 ND ND ND ND ND ug/L 10/18/07 ----3 --0.8 J --0.2 J ND ug/L 04/29/08 ----3 ND ND ND ND ND ug/L 10/23/08 ----3 Dry ND ND ND ND ug/L 04/07/09 ----3 ND ND ND ND ND ug/L 10/19/09 ----3 Dry ND Dry ND ND ug/L 04/29/10 ----3 ND ND ND ND ND ug/L 10/13/10 ----3 ND 4.0 ND ND ND ug/L 04/11/11 ----3 ND ND ND ND ND ug/L 10/03/11 ----3 ND ND ND ND ND ug/L 04/10/12 ----3 ND ND ND ND ND ug/L 10/15/12 ----3 ND ND ND ND ND ug/L 04/09/13 ----3 ND ND ND ND ND ug/L 10/08/13 ----3 ND ND ND ND ND ug/L 04/08/14 ----3 ND ND ND ND ND ug/L 10/08/14 0.17 --3 ND dry ND ND ND ug/L 04/08/15 0.17 --3 ND ND ND ND ND ug/L 10/28/15 0.17 --3 ND ND ND ND ND ug/L 04/05/16 0.17 --3 ND ND ND ND ND ug/L 10/04/16 0.17 --3 ND ND ND ND ND ug/L 04/03/17 0.17 --3 ND ND ND ND ND ug/L 10/03/17 0.17 --3 ND ND Dry ND ND ug/L 05/22/18 0.17 --3 ND ND ND ND ND ug/L 10/23/18 0.17 1 --ND ND ND ND ND ug/L 04/16/19 0.17 1 --ND ND ND ND ND ug/L 10/16/19 0.17 1 --Dry ND Dry ND ND ug/L 04/14/20 0.17 1 --ND ND ND ND ND ug/L 10/07/20 0.17 1 --ND ND ND ND ND ug/L 05/10/21 0.17 1 --ND ND ND ND ND ug/L 10/06/21 0.17 1 --Dry ND ND ND ND ug/L 05/18/22 0.17 1 --ND ND ND ND ND ug/L 10/10/22 0.25 1.0 --DRY 0.61 J DRY ND ND 10 of 12 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 BlanksDetected Monitoring Constituent/Parameter Units Date SWS Reporting LimitDetection Quantitation 1,1-Dichloroethane ug/L 09/22/94 ----5 ND ND ND ND ND No SW Standard ug/L 11/08/94 ----5 ND ND ND ND ND ug/L 01/18/95 ----5 ND ND ND ND ND ug/L 04/23/96 ----5 ND ND 6 ND ND ug/L 06/17/97 ----5 ND ND ND ND ND ug/L 10/16/97 ----5 ND ND ND ND ND ug/L 04/21/98 ----5 ND ND ND ND ND ug/L 04/07/99 ----5 ND ND ND ND ND ug/L 10/13/99 ----5 ND ND ND ND ND ug/L 04/05/00 ----5 ND ND ND ND ND ug/L 10/25/00 ----5 ND ND ND ND ND ug/L 04/04/01 ----5 ND ND ND ND ND ug/L 04/08/02 ----5 ND ND ND ND ND ug/L 10/21/02 ----5 ND ND ND ND ND ug/L 04/14/03 ----5 ND ND ND ND ND ug/L 10/01/03 ----5 ND ND ND ND ND ug/L 04/05/04 ----5 ND ND ND ND ND ug/L 10/18/04 ----5 ND ND ND ND ND ug/L 04/07/05 ----5 ND ND ND ND ND ug/L 10/06/05 ----5 ND ND ND ND ND ug/L 04/03/06 ----5 ND ND ND ND ND ug/L 10/03/06 ----5 ND ND ND ND ND ug/L 04/05/07 ----5 ND ND ND ND ND ug/L 10/18/07 ----5 ND ND ND ND ND ug/L 04/29/08 ----5 ND ND 1.5 J 1.9 J ND ug/L 10/23/08 ----5 Dry ND ND ND ND ug/L 04/07/09 ----5 ND ND 0.55 J ND ND ug/L 10/19/09 ----5 Dry ND Dry ND ND ug/L 04/29/10 ----5 ND ND ND ND ND ug/L 10/13/10 ----5 ND ND ND ND ND ug/L 04/11/11 ----5 ND ND 0.64 J ND ND ug/L 10/03/11 ----5 ND 1.0 J ND ND ND ug/L 04/10/12 ----5 ND 0.48 J ND ND ND ug/L 10/15/12 ----5 ND ND ND ND ND ug/L 04/09/13 ----5 ND ND 0.75 J ND ND ug/L 10/08/13 ----5 ND ND ND ND ND ug/L 04/08/14 ----5 ND ND ND ND ND ug/L 10/08/14 0.13 --5 ND dry ND ND ND ug/L 04/08/15 0.13 --5 ND ND ND ND ND ug/L 10/28/15 0.13 --5 ND ND ND ND ND ug/L 04/05/16 0.13 --5 ND ND 0.63 J ND ND ug/L 10/04/16 0.13 --5 ND ND ND ND ND ug/L 04/03/17 0.13 --5 ND ND ND ND ND ug/L 10/03/17 0.13 --5 ND ND Dry ND ND ug/L 05/22/18 0.13 --5 ND ND ND ND ND ug/L 10/23/18 0.13 1 --ND ND ND ND ND ug/L 04/16/19 0.13 1 --ND ND ND ND ND ug/L 10/16/19 0.13 1 --Dry ND Dry ND ND ug/L 04/14/20 0.13 1 --ND ND ND ND ND ug/L 10/07/20 0.13 1 --ND ND ND ND ND ug/L 05/10/21 0.13 1 --ND ND ND ND ND ug/L 10/06/21 0.13 1 --Dry ND ND ND ND ug/L 05/18/22 0.13 1 --ND ND ND ND ND ug/L 10/10/22 0.33 1.0 --DRY ND DRY ND ND 11 of 12 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 BlanksDetected Monitoring Constituent/Parameter Units Date SWS Reporting LimitDetection Quantitation Chloromethane ug/L 09/22/94 ----10 ND ND ND ND ND No SW Standard ug/L 11/08/94 ----10 ND ND ND ND ND ug/L 01/18/95 ----10 ND ND ND ND ND ug/L 04/23/96 ----10 ND ND ND ND ND ug/L 06/17/97 ----10 ND ND ND ND ND ug/L 10/16/97 ----10 ND ND ND ND ND ug/L 04/21/98 ----10 ND ND ND ND ND ug/L 04/07/99 ----10 ND ND ND ND ND ug/L 10/13/99 ----10 ND ND ND ND ND ug/L 04/05/00 ----10 ND ND ND ND ND ug/L 10/25/00 ----10 ND ND ND ND ND ug/L 04/04/01 ----10 ND ND ND ND ND ug/L 04/08/02 ----10 ND ND ND ND ND ug/L 10/21/02 ----10 ND ND ND ND ND ug/L 04/14/03 ----10 ND ND ND ND ND ug/L 10/01/03 ----10 ND ND ND ND ND ug/L 04/05/04 ----10 ND ND ND ND ND ug/L 10/18/04 ----10 ND ND ND ND ND ug/L 04/07/05 ----10 ND ND ND ND ND ug/L 10/06/05 ----10 ND ND ND ND ND ug/L 04/03/06 ----10 ND ND ND ND ND ug/L 10/03/06 ----10 ND ND ND ND ND ug/L 04/05/07 ----5 ND ND ND ND ND ug/L 10/18/07 ----1 --0.6 J --0.4 J ND ug/L 04/29/08 ----1 ND ND ND ND ND ug/L 10/23/08 ----1 Dry ND ND ND ND ug/L 04/07/09 ----1 ND ND ND ND ND ug/L 10/19/09 ----1 Dry ND Dry ND ND ug/L 04/29/10 ----1 ND ND ND ND ND ug/L 10/13/10 ----1 ND ND ND ND 0.49 J ug/L 04/11/11 ----1 ND ND ND ND ND ug/L 10/03/11 ----1 ND ND ND ND ND ug/L 04/10/12 ----1 ND ND ND ND ND ug/L 10/15/12 ----1 ND ND ND ND ND ug/L 04/09/13 ----1 ND ND ND ND ND ug/L 10/08/13 ----1 ND ND ND ND ND ug/L 04/08/14 ----1 ND ND ND ND ND ug/L 10/08/14 0.13 --1 ND dry ND ND ND ug/L 04/08/15 0.13 --1 ND ND ND ND ND ug/L 10/28/15 0.13 --1 ND ND ND ND ND ug/L 04/05/16 0.13 --1 ND ND ND ND ND ug/L 10/04/16 0.13 --1 ND ND ND ND ND ug/L 04/03/17 0.13 --1 ND ND ND ND ND ug/L 10/03/17 0.13 --1 ND ND Dry ND ND ug/L 05/22/18 0.13 --1 ND ND ND ND ND ug/L 10/23/18 0.13 1 --ND ND ND ND ND ug/L 04/16/19 0.13 1 --ND ND ND ND ND ug/L 10/16/19 0.13 1 --Dry ND Dry ND ND ug/L 04/14/20 0.13 1 --ND ND ND ND ND ug/L 10/07/20 0.13 1 --ND ND ND ND ND ug/L 05/10/21 0.13 1 --ND ND ND ND ND ug/L 10/06/21 0.13 1 --Dry ND ND ND ND ug/L 05/18/22 0.13 1 --ND ND ND ND ND ug/L 10/10/22 0.54 1.0 --DRY ND DRY ND ND ug/L 05/22/23 0.13 1 --ND ND ND ND ND 1,4-Dioxane (Human Health = 80 ug/L)ug/L 10/23/18 1.2 2 --1.6 J 29 14 12 ND ug/L 04/16/19 1.2 2 --ND 2.1 10 2.3 ND ug/L 10/16/19 1.2 2 --Dry 18 Dry 17 ND ug/L 04/14/20 0.80 2 --0.81 J 2.8 14 2.4 ND ug/L 10/07/20 0.80 2 --1.7 J ND 18 3.0 ND ug/L 05/10/21 0.80 2 --1.0 J 1.3 J 20 1.6 J ND ug/L 10/06/21 0.80 2 --Dry 25 2.2 6.4 ND ug/L 05/18/22 0.80 2 --1.3 J 2.3 20 3.0 ND ug/L 10/10/22 0.27 1.4 --DRY 11 DRY 6.2 ND ug/L 05/22/23 0.32 0.5 --1.23 19.4 4.58 4.05 ND Notes:mg/L =milligrams per liter ug/L =micrograms per liter ND = J = B =Blank-qualified result -- =no data available Bold =Concentrations above Human Health or Chronic Surface Water Standard Shaded and Bold = SW Standard =Surface Water Standard based on Freshwater Aquatic Life Classification Blanks =field, trip and method blanks SWS Reporting Limit =NCPQL or lab-specific reporting limit prior to October 2007 and NCSWSL starting in October 2007 (N) =Narrative Standard (AL) =Action Level Standard 1)Historical data prior to April 2008 provided by the County and taken from historical reports from 2)Hazen and Sawyer and Environment 1. 3)During the April 2019 event, lead in the sample from SW-2 was re-analyzed by EPA method 6020B and did not confirm. 12 of 12 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 pH (field)S.U.09/22/94 5.9 5.9 5.7 6.0 S.U.11/08/94 6.2 --6.2 -- S.U.01/18/95 6.3 --6.4 -- S.U.04/23/96 6.2 6.1 6.4 -- S.U.06/17/97 5.4 5.8 --4.5 S.U.10/16/97 6.0 6.2 5.5 6.1 S.U.04/21/98 6.4 6.4 6.2 6.8 S.U.04/07/99 6.4 7.1 6.2 7.0 S.U.10/13/99 7.7 7.5 6.9 7.4 S.U.04/05/00 7.8 6.8 6.6 7.0 S.U.10/25/00 6.3 7.0 --7.0 S.U.04/04/01 6.2 7.2 6.4 7.2 S.U.04/08/02 6.7 7.6 6.2 7.2 S.U.10/21/02 6.9 7.2 6.4 7.4 S.U.04/14/03 7.5 7.1 6.7 7.2 S.U.10/01/03 6.6 7.0 6.2 7.1 S.U.04/05/04 6.4 7.8 6.6 7.4 S.U.10/18/04 7.4 7.3 6.2 7.3 S.U.04/07/05 7.0 7.3 6.6 7.4 S.U.10/06/05 7.0 6.8 --7.3 S.U.04/03/06 7.0 7.3 6.4 7.3 S.U.10/03/06 6.7 7.1 --7.0 S.U.04/05/07 6.7 7.1 6.3 7.1 S.U.10/18/07 --7.4 --8.0 S.U.04/29/08 6.43 8.61 8.66 6.91 S.U.10/23/08 Dry 9.37 6.91 5.86 S.U.04/07/09 6.93 7.37 6.53 7.48 S.U.10/19/09 Dry 6.80 Dry 8.04 S.U.04/29/10 6.25 7.29 6.57 7.08 S.U.10/13/10 6.48 7.22 6.00 7.09 S.U.04/12/11 6.92 6.68 6.24 6.02 S.U.10/03/11 8.16 7.54 7.80 7.75 S.U.04/11/12 6.59 7.21 6.90 7.42 S.U.10/15/12 6.57 6.67 6.82 6.93 S.U.04/09/13 7.27 6.93 5.79 7.34 S.U.10/08/13 7.09 7.39 7.41 7.26 S.U.04/08/14 7.62 8.10 6.54 8.09 S.U.10/08/14 6.98 7.76 Dry 7.20 S.U.04/08/15 6.80 7.56 6.09 7.02 S.U.10/28/15 6.39 7.28 7.69 6.89 S.U.04/05/16 7.03 6.36 5.92 7.16 S.U.10/04/16 6.47 6.74 6.46 6.52 S.U.04/03/17 7.67 7.24 6.92 7.36 S.U.10/03/17 7.00 7.40 Dry 7.14 S.U.05/23/18 6.95 7.20 6.77 7.27 S.U.10/23/18 6.89 7.51 7.33 7.43 S.U.04/16/19 7.35 7.39 6.99 7.58 S.U.10/15/19 Dry 7.41 Dry 7.39 S.U.04/14/20 6.73 6.93 7.17 7.46 S.U.10/07/20 7.39 7.48 8.01 7.67 S.U.05/10/21 7.13 7.48 7.26 7.33 S.U.10/06/21 Dry 7.54 7.23 7.45 S.U.05/18/22 6.99 7.58 6.92 7.39 S.U.10/10/22 Dry 7.37 Dry 7.25 TABLE 7 Summary of Surface Water Field Parameters Closed Randolph County Landfill, Permit No. 76-01 Detected Monitoring Constituent/Parameter Units Date 1 of 5 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 Detected Monitoring Constituent/Parameter Units Date Specific Conductivity (field)uS/cm 09/22/94 80 600 260 520 uS/cm 11/08/94 87 --230 -- uS/cm 01/18/95 270 --160 -- uS/cm 04/23/96 170 210 180 -- uS/cm 06/17/97 160 190 --200 uS/cm 10/16/97 170 620 260 460 uS/cm 04/21/98 610 100 200 94 uS/cm 04/07/99 300 180 220 180 uS/cm 10/13/99 1200 300 220 240 uS/cm 04/05/00 370 160 230 230 uS/cm 10/25/00 150 730 --500 uS/cm 04/04/01 530 130 200 130 uS/cm 04/08/02 260 180 200 210 uS/cm 10/21/02 342 192 251 197 uS/cm 04/14/03 1860 128 258 125 uS/cm 10/01/03 308 190 397 199 uS/cm 04/05/04 350 420 270 230 uS/cm 10/18/04 590 294 329 295 uS/cm 04/07/05 364 195 262 195 uS/cm 10/06/05 195 692 --618 uS/cm 04/03/06 255 269 288 298 uS/cm 10/03/06 180 167 --178 uS/cm 04/05/07 240 180 282 186 uS/cm 10/18/07 --556 --325 uS/cm 04/29/08 157 169 166 180 uS/cm 10/23/08 Dry 247 239 236 uS/cm 04/07/09 194 181 276 179 uS/cm 10/19/09 Dry 300 Dry 316 uS/cm 04/29/10 174 225 354 181 uS/cm 10/13/10 218 596 341 336 uS/cm 04/12/11 145 220 204 215 uS/cm 10/03/11 111 336 272 284 uS/cm 04/11/12 132 208 197 175 uS/cm 10/15/12 185 325 182 248 uS/cm 04/09/13 115 160 185 169 uS/cm 10/08/13 190 257 339 340 uS/cm 04/08/14 186 200 331 196 uS/cm 10/08/14 449 324 Dry 473 uS/cm 04/08/15 101 199 236 248 uS/cm 10/28/15 141 212 194 272 uS/cm 04/05/16 167 162 259 170 uS/cm 10/04/16 222 262 281 154 uS/cm 04/03/17 165 186 131 176 uS/cm 10/03/17 347 299 Dry 304 uS/cm 05/23/18 189 194 237 194 uS/cm 10/23/18 260 214 275 210 uS/cm 04/16/19 167 125 237 121 uS/cm 10/15/19 Dry 216 Dry 212 uS/cm 04/14/20 173 122 275 102 uS/cm 10/07/20 297 384 163 165 uS/cm 05/10/21 191 124 315 142 uS/cm 10/06/21 Dry 139 368 188 uS/cm 05/18/22 226 202 338 188 uS/cm 10/10/22 Dry 243 Dry 187 2 of 5 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 Detected Monitoring Constituent/Parameter Units Date Temperature (field)Celsius 09/22/94 16 21 17 21 Celsius 11/08/94 9 --9 -- Celsius 01/18/95 8 --6 -- Celsius 04/23/96 17 20 16 -- Celsius 06/17/97 21 27 --27 Celsius 10/16/97 14 19 13 19 Celsius 04/21/98 14 16 12 16 Celsius 04/07/99 16 21 15 20 Celsius 10/13/99 11 18 17 18 Celsius 04/05/00 11 14 8 16 Celsius 10/25/00 15 18 --17 Celsius 04/04/01 11 12 9 12 Celsius 04/08/02 16 16 13 17 Celsius 10/21/02 15 15 15 15 Celsius 04/14/03 16 15 13 17 Celsius 10/01/03 14 18 13 18 Celsius 04/05/04 12 12 9 14 Celsius 10/18/04 15 17 13 17 Celsius 04/07/05 17 18 15 17 Celsius 10/06/05 21 24 --23 Celsius 04/03/06 15 18 15 18 Celsius 10/03/06 17 22 --22 Celsius 04/05/07 11 17 12 17 Celsius 10/18/07 --20 --20 Celsius 04/29/08 16.5 18.0 18.0 17.7 Celsius 10/23/08 Dry 16.4 11.5 16.0 Celsius 04/07/09 11.3 13.1 13.4 14.1 Celsius 10/19/09 Dry 14.3 Dry 14.6 Celsius 04/29/10 13.3 18.3 14.6 17.9 Celsius 10/13/10 16.4 18.8 15.8 18.8 Celsius 04/12/11 17.4 15.3 18.4 17.0 Celsius 10/03/11 13.0 19.0 14.2 20.5 Celsius 04/11/12 12.1 16.3 12.9 16.4 Celsius 10/15/12 14.6 16.9 14.9 17.7 Celsius 04/09/13 15.9 15.5 20.0 16.3 Celsius 10/08/13 16.0 20.9 16.2 21.0 Celsius 04/08/14 15.5 13.2 12.5 13.0 Celsius 10/08/14 19.8 21.4 Dry 21.5 Celsius 04/08/15 17.4 17.3 18.0 14.6 Celsius 10/28/15 16.7 16.4 15.3 16.4 Celsius 04/05/16 15.8 17.7 9.9 18.0 Celsius 10/04/16 17.4 21.4 17.4 21.2 Celsius 04/03/17 15.9 17.2 16.8 17.3 Celsius 10/03/17 14.1 20.8 Dry 20.8 Celsius 05/23/18 18.7 25.4 19.3 25.8 Celsius 10/23/18 10.2 16.3 10.3 16.6 Celsius 04/16/19 13.9 16.9 14.5 20.3 Celsius 10/15/19 Dry 19.9 Dry 19.7 Celsius 04/14/20 14.8 17.3 13.6 18.6 Celsius 10/07/20 15.3 15.7 20.4 18.7 Celsius 05/10/21 15.5 19.7 15.1 19.6 Celsius 10/06/21 Dry 23.3 20.7 22.9 Celsius 05/18/22 16.7 21.6 15.8 21.1 Celsius 10/10/22 Dry 17.6 Dry 17.8 3 of 5 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 Detected Monitoring Constituent/Parameter Units Date Turbidity (field)NTU 04/29/08 28.8 82.0 137 16.0 NTU 10/23/08 Dry 6.04 4.41 28.6 NTU 04/07/09 12.7 12.3 15.2 25.0 NTU 10/19/09 Dry 16.4 Dry 12.5 NTU 04/29/10 8.74 11.6 11.0 12.9 NTU 10/13/10 10.1 10.8 7.07 15.9 NTU 04/12/11 21.8 19.8 11.5 36.3 NTU 10/03/11 13.2 15.2 22.3 14.9 NTU 04/11/12 16.3 15.2 7.33 15.8 NTU 10/15/12 17.2 14.0 25.4 12.6 NTU 04/09/13 21.4 20.4 9.78 16.0 NTU 10/08/13 35.0 11.7 7.15 8.88 NTU 04/08/14 23.1 40.2 27.2 30.3 NTU 10/08/14 7.81 13.2 Dry 4.26 NTU 04/08/15 5.88 7.99 3.77 7.58 NTU 10/28/15 37.2 9.89 10.8 10.3 NTU 04/05/16 11.4 14.9 3.14 17.0 NTU 10/04/16 18.3 18.2 2.98 26.9 NTU 04/03/17 7.50 13.8 10.5 19.3 NTU 10/03/17 1.78 7.58 Dry 9.27 NTU 05/23/18 33.6 49.9 25.7 62.2 NTU 10/23/18 3.01 6.24 2.10 7.81 NTU 04/16/19 11.0 28.5 12.9 0.54 NTU 10/15/19 --8.80 --10.9 NTU 04/14/20 8.54 2.49 2.49 16.7 NTU 10/07/20 9.01 1.87 8.32 7.69 NTU 05/10/21 39.3 7.73 27.5 10.3 NTU 10/06/21 Dry 16.2 2.56 4.09 NTU 05/18/22 8.22 11.0 4.04 9.42 NTU 10/10/22 Dry 101 Dry 59.7 NTU 05/23/23 12.1 33.2 10.10 12.7 Dissolved Oxygen (field)mg/L 04/29/08 6.09 7.66 5.93 3.78 mg/L 10/23/08 Dry 7.14 8.80 5.72 mg/L 04/07/09 10.70 9.50 10.30 9.70 mg/L 10/19/09 Dry 8.55 Dry 7.45 mg/L 04/01/10 8.26 8.40 4.97 7.90 mg/L 10/13/10 2.98 5.54 3.50 6.53 mg/L 04/12/11 8.91 8.41 8.33 9.50 mg/L 10/03/11 13.01 8.78 7.36 10.27 mg/L 04/11/12 9.02 7.48 9.46 7.04 mg/L 10/15/12 8.29 6.14 6.96 7.14 mg/L 04/09/13 11.09 7.90 8.79 8.82 mg/L 10/08/13 7.15 4.34 6.53 3.98 mg/L 04/08/14 9.03 12.61 13.28 13.64 mg/L 10/08/14 5.50 5.30 Dry 6.26 mg/L 04/08/15 9.01 11.10 7.60 8.21 mg/L 10/28/15 6.45 7.80 8.54 5.74 mg/L 04/05/16 6.65 8.51 8.73 8.22 mg/L 10/04/16 3.87 4.01 6.16 3.46 mg/L 04/03/17 10.96 7.77 9.10 7.44 mg/L 10/03/17 7.87 4.44 Dry 5.01 mg/L 05/23/18 7.03 3.69 5.01 4.96 mg/L 10/23/18 7.14 6.82 7.59 5.65 mg/L 04/16/19 8.12 7.37 9.21 7.58 mg/L 10/15/19 Dry 4.65 Dry 5.86 mg/L 04/14/20 4.38 5.12 7.58 8.87 mg/L 10/07/20 8.30 8.70 7.78 8.01 mg/L 05/10/21 7.08 5.75 8.09 6.14 mg/L 10/06/21 Dry 8.77 6.67 6.45 mg/L 05/18/22 5.80 5.23 6.04 4.24 mg/L 10/10/22 Dry 4.38 Dry 4.90 4 of 5 September 2023 31404568.018 SW-1 SW-3 SW-2 SW-4 Detected Monitoring Constituent/Parameter Units Date ORP (field)mV 10/23/08 Dry -44 -18 103 mV 04/07/09 111 158 12.7 159 mV 10/19/09 Dry 91.7 Dry 115 mV 04/29/10 8.6 89.9 98.4 105 mV 10/13/10 156 185 211 156 mV 04/12/11 44.2 189 238 155 mV 10/03/11 111 102 74.8 128 mV 04/11/12 23.7 54.1 32.1 57.1 mV 10/15/12 61.4 73.6 49.5 77.0 mV 04/09/13 -8.4 72.4 64.5 64.8 mV 10/08/13 1.2 41.3 51.1 52.5 mV 04/08/14 -17.1 76.9 78.8 220 mV 10/08/14 175 302 Dry 328 mV 04/08/15 14.0 82.8 93.4 57.2 mV 10/28/15 1.5 200 95.1 111 mV 04/05/16 149 157 96.0 128 mV 10/04/16 20.2 83.6 119 101 mV 04/03/17 161 152 143 223 mV 10/03/17 148 130 Dry 134 mV 05/23/18 154 157 91 160 mV 10/23/18 218 192 196 204 mV 04/16/19 370 329 394 315 mV 10/15/19 Dry 110 Dry 118 mV 04/14/20 32.5 114 50.6 144 mV 10/07/20 -2.1 -4.2 0.8 84 mV 05/10/21 -13.1 187 207 204 mV 10/06/21 Dry 153 177 160 mV 05/18/22 -14.3 76 83 106 mV 10/10/22 Dry 199 Dry 110 mV 05/23/23 116 152 116 169 Notes:mg/L =milligrams per liter S.U. =Standard Units NTU =Nephelometric Turbidity Units ND = uS/cm = mV =Millivolts -- =no data available detected at the laboratory detection limit for data from October 2007 forward 5 of 5 September 2023 31404568.018 MW-5 MW-2 MW-3 MW-7 MW-8 MW-10S MW-10D MW-11S Sulfide mg/L 04/11/11 0.01 --ND ND --ND ND ND ND ND ND mg/L 10/28/15 0.01 --ND ND ND ND ND ND ND ND ND mg/L 04/05/16 0.01 --ND ND ND ND ND ND ND ND ND mg/L 10/04/16 0.01 --ND ND ND ND ND ND ND ND ND mg/L 04/03/17 0.01 --ND ND ND ND ND ND ND ND ND mg/L 10/03/17 0.01 --ND ND ND ND ND ND ND ND ND mg/L 05/22/18 0.01 --ND ND ND ND ND ND ND ND ND mg/L 10/23/18 0.01 -------------------- mg/L 04/16/19 0.01 0.1 ND ND ND ND ND ND ND ND ND mg/L 10/15/19 0.01 -------------------- mg/L 04/14/20 0.01 0.1 ND ND ND ND ND ND ND ND ND mg/L 10/07/20 0.01 0.1 ND ND ND ND ND ND ND ND ND mg/L 05/10/21 0.01 0.1 ND ND ND ND ND ND ND ND ND mg/L 05/17/22 0.01 0.1 --ND ND ND ND ND ND ND ND mg/L 05/22/23 1.1 ----4.4 5.0 3.2 3.2 4.0 4.0 2.2 -- Chloride mg/L 04/11/11 0.047 --8.4 B 22 --20 10 32 270 5.3 B 1.9 mg/L 10/28/15 2.2 --6.1 48 4.6 J 19 13 47 280 4.3 J ND mg/L 04/05/16 2.2 --6.2 15 4.7 J 12 11 27 270 5.2 ND mg/L 10/04/16 6.5 --6.1 19 5.4 17 14 45 220 5.2 ND mg/L 04/03/17 2.2 --6.2 18 6.8 13 12 33 190 5.0 ND mg/L 10/03/17 2.2 --6.4 33 8.2 16 14 33 200 5.0 ND mg/L 05/22/18 2.2 --6.5 17 4.0 J 11 12 30 190 5.9 ND mg/L 10/23/18 2.2 5 6.2 27 6.2 12 11 55 200 5.7 ND mg/L 04/16/19 2.2 5 6.1 5.9 2.6 J 8.9 9.7 27 190 5.7 ND mg/L 10/15/19 2.2 5 6.1 40 8.1 11.0 14.0 39 170 5.3 ND mg/L 04/14/20 2.2 5 8.8 20 5.5 9.3 11.0 29 180 6.4 ND mg/L 10/07/20 2.2 5 7.6 18 6.4 11 11 42 170 6.3 ND mg/L 05/10/21 2.2 5 6.9 17 ND 7.1 6.2 25 170 5.4 ND mg/L 10/06/21 2.2 5 8.7 35 7.6 12 12 36 180 6.9 ND mg/L 05/17/22 2.2 5 8.2 22 6.7 8.3 10 22 170 6.2 ND mg/L 10/10/22 2.2 5 --63 10.8 14.7 15.7 59 194 7.2 ND mg/L 05/22/23 0.05 ----13.80 7.48 8.65 7.60 38.6 175 6.52 -- Nitrate as N mg/L 04/11/11 0.025 --1.2 J ND --3.3 J 1.9 J ND ND ND -- mg/L 10/28/15 0.025 --1.0 J ND 0.10 J ND 0.16 J ND 0.11 J 0.11 J ND mg/L 04/05/16 0.025 --1.1 J ND 0.13 J 0.047 J 0.13 J ND 0.10 J 0.09 J ND mg/L 10/04/16 0.025 --1.1 J ND 0.15 J 0.048 J 0.16 J 0.064 J 0.058 J 0.11 J ND mg/L 04/03/17 0.025 --0.92 J ND 0.10 J ND 0.12 J ND ND 0.082 J ND mg/L 10/03/17 0.025 --1.2 J ND ND ND 0.17 J ND ND 0.05 J ND mg/L 05/22/18 0.025 --1.0 J ND 0.093 J ND 0.061 J 0.064 J 0.052 J 0.110 J ND mg/L 10/23/18 0.025 0.1 0.64 ND 0.046 J 0.052 J 0.053 J ND 0.078 J 0.14 ND mg/L 04/16/19 0.041 0.1 0.82 0.22 ND ND 0.054 J 0.054 J ND 0.075 J ND mg/L 10/15/19 0.041 0.1 0.92 ND ND ND 0.098 J ND ND 0.030 J ND mg/L 04/14/20 0.041 0.1 1.10 ND ND ND ND ND ND 0.075 J ND mg/L 10/07/20 0.041 0.1 1.30 ND ND ND 0.070 J ND ND 0.050 J ND mg/L 05/10/21 0.041 0.1 1.10 ND ND ND ND ND ND 0.069 J ND mg/L 10/06/21 0.041 0.1 0.74 ND ND ND ND ND ND 0.067 J ND mg/L 05/17/22 0.041 0.1 0.65 0.041 J ND 0.042 J 0.059 J 0.12 0.082 J 0.12 ND mg/L 10/10/22 0.041 0.1 --ND 0.102 J ND ND ND ND ND ND mg/L 05/22/23 0.1 ----ND ND ND ND ND ND ND -- Nitrite as N mg/L 04/11/11 0.003 --ND ND --ND ND ND 0.0053 B ND 0.0038 J mg/L 10/28/15 0.017 --ND ND 0.018 J ND ND ND ND ND ND mg/L 04/05/16 0.017 --ND ND ND ND ND ND ND ND ND mg/L 10/04/16 0.017 --ND ND ND ND ND ND ND ND ND mg/L 04/03/17 0.017 --ND ND ND ND ND ND ND ND ND mg/L 10/03/17 0.017 --ND ND ND ND ND ND ND ND ND mg/L 05/23/18 0.017 --ND ND ND ND ND ND ND ND ND mg/L 10/23/18 0.017 0.1 ND 0.033 J 0.042 J ND ND ND ND ND ND mg/L 04/16/19 0.017 0.1 ND 0.087 J 0.020 J ND ND ND ND ND ND mg/L 10/15/19 0.017 0.1 0.045 J 0.078 J 0.35 0.044 J 0.042 J 0.061 J 0.041 J 0.043 J ND mg/L 04/14/20 0.017 0.1 ND ND ND ND ND ND ND ND ND mg/L 10/07/20 0.017 0.1 ND ND 0.026 J ND ND ND ND ND ND mg/L 05/10/21 0.017 0.1 ND 0.017 J 0.028 J ND ND ND ND ND ND mg/L 10/06/21 0.017 0.1 ND ND 0.028 J ND ND ND ND ND ND mg/L 05/17/22 0.017 0.1 0.018 J 0.021 J 0.020 J ND ND ND ND ND ND Sulfate as SO4 mg/L 04/11/11 0.02 --9.7 J 6.4 J --2.1 J 2.1 J 15 J 35 J 4.5 J ND mg/L 10/28/15 2.9 --7.1 J ND 3.0 J ND ND 8.8 J 17 J ND ND mg/L 04/05/16 2.9 --7.5 J 3.1 J 3.1 J ND ND 7.2 J 14 J ND ND mg/L 10/04/16 2.9 --8.4 J 3.3 J 3.3 J ND ND 8.7 J 3.2 J ND ND mg/L 04/03/17 2.9 --7.0 J 3.3 J 3.1 J ND ND 8.0 J 3.1 J ND ND mg/L 10/03/17 2.9 --6.2 J ND 4.0 J ND ND 7.3 J ND ND ND mg/L 05/22/18 2.9 --5.9 J ND ND ND ND 6.8 J ND ND ND mg/L 10/23/18 2.9 5 5.5 ND ND ND ND 8.9 ND ND ND mg/L 04/16/19 2.9 5 12 2.9 J 3.4 J ND ND 7.0 ND ND ND mg/L 10/15/19 2.9 5 11 ND 3.4 J ND ND 7.2 ND ND ND mg/L 04/14/20 2.9 5 7.6 3.3 J 2.9 J ND ND 8.0 ND ND ND mg/L 10/07/20 2.9 5 9.5 3.3 J 3.0 J ND ND 9.7 3.1 J ND ND mg/L 05/10/21 2.9 5 15 1.8 J ND 0.29 J 0.85 J 7.0 0.34 J 0.52 J ND mg/L 10/06/21 2.9 5 15 4.1 J 4.0 J ND ND 8.1 3.4 J ND ND mg/L 05/17/22 2.9 5 9.3 3.2 J 3.2 J ND ND 7.0 3.4 J ND ND mg/L 10/10/22 2.9 ----1.46 3.81 1.43 0.323 9.9 2.0 1.4 ND mg/L 05/22/23 0.1 ----2.40 1.80 0.707 0.906 9.56 2.34 0.579 -- Biochemical Oxygen Demand mg/L 04/11/11 ---------------------- mg/L 10/28/15 2 --ND ND ND ND ND ND ND ND ND mg/L 04/05/16 2 --ND ND ND ND ND ND ND ND ND mg/L 10/04/16 2 --ND ND ND ND ND ND ND ND ND mg/L 04/03/17 2 --ND ND ND ND ND ND ND ND ND mg/L 10/03/17 2 --ND ND ND ND ND ND ND ND ND mg/L 10/23/18 2 -------------------- mg/L 04/16/19 2 2 ND ND ND ND ND ND ND ND ND mg/L 10/15/19 2 2 ------------------ mg/L 04/14/20 2 2 ND ND ND ND ND ND ND ND ND mg/L 10/07/20 2 2 ND ND ND ND ND ND ND ND ND mg/L 05/10/21 2 2 ------------------ mg/L 10/10/22 2 2 --ND ND ND ND ND ND ND -- mg/L 05/22/23 3 ----ND ND ND ND ND ND ND -- Chemical Oxygen Demand mg/L 04/11/11 ---------------------- mg/L 10/28/15 1 --12 35 48 10 10 12 31 10 ND mg/L 04/05/16 10 --ND ND 10 ND ND ND 29 ND ND mg/L 10/04/16 10 --ND 25 29 ND 10 ND 29 ND ND mg/L 04/03/17 10 --ND 32 17 ND ND 17 32 ND ND mg/L 10/03/17 10 --ND 17 ND ND ND ND 15 ND ND mg/L 10/23/18 10 -------------------- mg/L 04/16/19 10 10 ND 30 ND ND ND ND 21 ND ND mg/L 10/15/19 10 10 ------------------ mg/L 04/14/20 10 10 ND ND 16 ND ND ND 24 ND ND mg/L 10/07/20 10 10 ND 28 11 ND 13 ND 22 ND ND mg/L 05/10/21 10 10 ------------------ mg/L 10/10/22 10 10 --23 6.8 3.1 J 4.4 J 3.1 J 17.8 4.2 J -- mg/L 05/22/23 1.7 ----ND ND ND ND ND 6.3 ND -- Total Alkalinity as CaCO3 mg/L 04/11/11 12 --460 ND --26 88 43 330 18 ND mg/L 10/28/15 14 --480 ND 44 40 1000 55 410 25 ND mg/L 04/05/16 14 --530 19 47 24 94 46 410 26 ND mg/L 10/04/16 14 --480 ND ND 33 100 44 440 16 ND mg/L 04/03/17 14 --490 ND 58 37 91 45 440 19 ND mg/L 10/03/17 14 --470 17 48 41 96 54 470 44 ND mg/L 10/23/18 14 -------------------- mg/L 04/16/19 14 15 500 ND 24 17 79 34 430 ND ND mg/L 10/15/19 14 15 ------------------ mg/L 04/14/20 14 15 420 ND 32 17 78 39 410 ND ND mg/L 10/07/20 14 15 540 ND 46 41 93 65 460 21 ND mg/L 05/10/21 14 15 ------------------ TABLE 8 Summary of Geochemical Parameters Closed Randolph County Landfill, Permit No. 76-01 Detected Monitoring Constituent/Parameter Units Date Method Detection Limit Upgradient Downgradient Wells BlanksPractical Quantatation Limit 1 of 5 September 2023 31404568.018 MW-5 MW-2 MW-3 MW-7 MW-8 MW-10S MW-10D MW-11S TABLE 8 Summary of Geochemical Parameters Closed Randolph County Landfill, Permit No. 76-01 Detected Monitoring Constituent/Parameter Units Date Method Detection Limit Upgradient Downgradient Wells BlanksPractical Quantatation Limit Total Organic Carbon mg/L 04/11/11 0.27 --1.6 6.4 --1.3 0.85 J 1.5 6.9 0.62 J ND mg/L 10/28/15 0.34 --0.14 5.6 11 2.2 0.35 J 1.2 3.9 ND ND mg/L 04/05/16 0.34 --ND 3.9 2.4 ND ND 1.3 4.7 0.36 J ND mg/L 10/04/16 0.34 --1.8 6.2 4.0 3.7 0.94 J 1.6 6.1 0.43 J ND mg/L 04/03/17 0.34 --1.7 2.9 2.2 2.9 0.79 J 1.3 6.5 0.44 J ND mg/L 10/03/17 0.34 --1.1 5.9 2.5 3.8 1.3 2.0 7.1 ND ND mg/L 10/23/18 0.34 -------------------- mg/L 04/16/19 0.34 1 6.9 7.8 2.5 9.2 2.9 5.3 15 1.7 ND mg/L 10/15/19 0.34 1 ------------------ mg/L 04/14/20 0.34 1 0.53 J 2.7 4.6 0.58 J ND 0.36 J 4.3 ND ND mg/L 10/07/20 0.54 1 1.7 6.0 2.2 1.9 0.91 J 1.3 6.3 ND ND mg/L 05/10/21 0.54 1 ------------------ mg/L 05/22/23 0.3 ----4.93 1.96 J 4.38 1.47 J 3.26 17.4 1.01 J -- Nitrate/Nitrite as N mg/L 04/11/11 ----1.2 ND --3.3 1.9 ND ND 0.079 J ND mg/L 10/28/15 ----1.00 ND 0.12 ND 0.16 ND 0.11 0.11 ND mg/L 04/05/16 0.041 --1.1 B ND 0.13 B 0.047 B 0.13 B ND 0.1 B 0.09 B 0.072 mg/L 05/23/18 0.041 --1.0 ND 0.093 J ND 0.061 J 0.064 J 0.052 J 0.110 ND mg/L 10/23/18 0.041 0.01 0.64 ND 0.046 J 0.052 J 0.053 J ND 0.078 J 0.14 ND mg/L 04/16/19 0.041 0.1 0.82 0.30 ND ND 0.054 J 0.054 J ND 0.075 J ND mg/L 10/15/19 0.041 0.1 0.97 ND 0.18 ND 0.14 0.044 J 0.051 J 0.073 J ND mg/L 04/14/20 0.041 0.1 1.1 ND ND ND ND ND ND 0.075 J ND mg/L 10/07/20 0.041 0.1 1.3 ND 0.063 J ND 0.07 J ND ND 0.050 J ND mg/L 05/10/21 0.041 0.1 1.1 ND ND ND ND ND ND 0.069 J ND mg/L 10/06/21 0.041 0.1 0.74 ND ND ND ND ND ND 0.067 J ND mg/L 05/17/22 0.041 0.1 0.66 0.06 J 0.048 J 0.042 J 0.059 J 0.120 0.082 J 0.120 ND Ethane mg/L 04/11/11 0.0015 --ND ND --ND ND ND ND ND ND mg/L 10/28/15 0.00047 --ND ND ND ND ND ND ND ND ND mg/L 04/05/16 0.00047 --ND ND ND ND ND ND ND ND ND mg/L 10/04/16 0.001 --ND ND ND ND ND ND 0.0015 ND ND mg/L 04/03/17 0.00005 --ND ND ND 0.00053 ND ND 0.0013 ND ND mg/L 10/03/17 0.000006 --ND 0.0005 ND 0.00072 ND 0.00056 0.0012 ND ND mg/L 05/22/18 0.000006 --ND ND ND 0.00053 ND ND 0.0016 ND ND mg/L 10/23/18 0.000032 0.0002 ND 0.00031 ND 0.00065 ND 0.00063 0.0014 ND ND mg/L 04/16/19 0.0002 0.0002 ND ND ND 0.00044 B ND 0.00023 B 0.0013 B ND ND mg/L 10/15/19 0.000006 0.0002 ND 0.00053 ND 0.00066 ND 0.00032 0.0012 ND ND mg/L 04/14/20 0.000006 0.0002 ND ND ND 0.00026 ND ND 0.00078 ND ND mg/L 10/07/20 0.000075 0.0002 ND 0.00034 ND 0.0012 ND 0.00062 0.0017 ND ND mg/L 05/10/21 0.000075 0.0002 ND 0.00048 J ND 0.00066 J ND 0.00027 J 0.0020 0.00025 J ND mg/L 10/06/21 0.000075 0.0002 0.00022 J 0.00031 J ND 0.0017 ND 0.00081 J 0.0016 0.00035 J ND mg/L 05/17/22 0.000170 0.0010 --0.00051 J 0.00021 J 0.00077 J ND ND 0.0013 0.00034 J ND mg/L 10/10/22 0.000170 0.0010 --ND ND ND ND 0.0012 0.0006 ND ND mg/L 05/22/23 0.000170 0.0010 --ND ND ND ND ND ND ND ND Ethene mg/L 04/11/11 0.0016 --ND ND --ND ND ND ND ND ND mg/L 10/28/15 0.00062 --ND ND ND ND ND ND ND ND ND mg/L 04/05/16 0.00062 --ND ND ND ND ND ND ND ND ND mg/L 10/04/16 0.001 --ND ND ND ND ND ND ND ND ND mg/L 04/03/17 0.00007 --ND ND ND ND ND ND 0.00055 ND ND mg/L 10/03/17 0.00002 --ND ND ND ND ND ND 0.00056 ND ND mg/L 05/22/18 0.00002 --ND ND ND ND ND ND 0.00078 ND ND mg/L 10/23/18 0.0000064 0.0002 ND ND ND ND ND ND 0.00074 ND ND mg/L 04/16/19 0.0002 0.0002 ND ND ND ND ND ND 0.00075 ND ND mg/L 10/15/19 0.000012 0.0002 ND ND ND ND ND ND 0.00062 ND ND mg/L 04/14/20 0.000012 0.0002 ND ND ND ND ND ND 0.00048 ND ND mg/L 10/07/20 0.00012 0.0002 ND ND ND ND ND ND 0.00071 ND ND mg/L 05/10/21 0.00012 0.0002 ND 0.00031 J ND ND ND ND 0.00089 J ND ND mg/L 10/06/21 0.00012 0.0002 ND ND ND ND ND ND 0.0011 0.00039 J ND mg/L 05/17/22 0.00024 0.0001 --0.00076 J 0.00036 J 0.00027 J ND ND 0.0012 ND ND mg/L 10/10/22 0.00024 0.0001 --ND ND ND ND ND ND ND ND mg/L 05/22/23 0.00024 0.0001 --ND ND ND ND ND ND ND ND Methane mg/L 04/11/11 0.00049 --ND ND --1.62 0.64 J ND 4.3 ND ND mg/L 10/28/15 0.00044 --0.00452 0.408 ND 5.56 ND 1.38 ND 0.000608 J ND mg/L 04/05/16 0.00044 --ND 0.0238 ND 1.13 ND 0.0208 ND ND ND mg/L 10/04/16 0.0025 --0.0054 0.25 0.052 6.30 0.0065 0.43 0.13 0.034 ND mg/L 04/03/17 0.00019 --ND 0.26 0.84 5.60 ND 0.18 0.094 0.0025 ND mg/L 10/03/17 0.00003 --0.0036 0.95 0.10 5.40 ND 2.1 0.072 0.22 ND mg/L 05/22/18 0.00003 --ND 0.20 0.023 4.8 ND 0.24 0.098 0.00057 ND mg/L 10/23/18 0.00061 0.0005 0.0010 0.83 0.022 5.5 ND 1.2 0.084 0.00051 ND mg/L 04/16/19 0.0005 0.0005 0.022 0.043 0.0016 4.3 ND 0.40 0.092 ND ND mg/L 10/15/19 0.00007 0.0005 0.0028 0.53 0.60 5.7 ND 1.7 0.10 0.0001 ND mg/L 04/14/20 0.00007 0.0005 0.0023 0.096 0.036 2.4 ND 0.24 0.065 0.0018 ND mg/L 05/10/21 0.0025 0.0005 0.0020 J 0.49 0.54 2.9 0.0039 J 0.60 0.14 0.011 ND mg/L 10/06/21 0.0025 0.0005 ND 0.16 0.22 5.4 0.0023 J 1.9 0.12 ND ND mg/L 05/17/22 0.0020 0.0050 --0.17 ND 1.6 ND ND 0.05 ND ND mg/L 10/10/22 0.00044 --ND ND 0.014 2.1 ND 2.6 0.03 0.063 ND mg/L 05/22/23 0.0025 0.0005 --0.0393 0.0145 0.864 ND 0.263 0.0178 0.0037 ND Hexanoic Acid mg/L 04/11/11 0.00007 0.0005 ND ND --ND ND ND ND ND ND mg/L 10/28/15 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 04/05/16 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 10/04/16 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 04/03/17 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 10/03/17 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 04/16/19 0.26 0.5 ND ND ND ND ND ND ND ND ND mg/L 04/14/20 0.26 0.5 ND --ND ND ND ND ND ND ND mg/L 10/07/20 0.26 0.5 ND ND ND ND ND ND ND ND ND mg/L 05/22/23 0.058 ----ND ND ND ND ND ND ND -- iso-Hexanoic Acid mg/L 04/11/11 0.00007 0.0005 ND ND --ND ND ND ND ND ND mg/L 10/28/15 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 04/05/16 0.00007 0.0005 0.64 0.58 0.55 ND ND ND ND ND ND mg/L 10/04/16 0.00007 0.0005 ND 0.58 ND ND ND ND ND ND ND mg/L 04/03/17 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 10/03/17 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 04/16/19 0.44 0.5 ND ND ND ND ND ND ND ND ND mg/L 04/14/20 0.44 0.5 ND --ND ND ND ND ND ND ND mg/L 10/07/20 0.44 0.5 ND ND ND ND ND ND ND ND ND mg/L 05/22/23 0.056 ----ND ND ND ND ND ND ND -- iso-Pentanoic Acid mg/L 04/11/11 0.00007 0.0005 ND ND --ND ND ND ND ND ND mg/L 10/28/15 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 04/05/16 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 10/04/16 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 04/03/17 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 10/03/17 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 04/16/19 0.18 0.2 ND ND ND ND ND ND ND ND ND mg/L 04/14/20 0.18 0.2 ND --ND ND ND ND ND ND ND mg/L 10/07/20 0.18 0.2 ND ND ND ND ND ND ND ND ND 2 of 5 September 2023 31404568.018 MW-5 MW-2 MW-3 MW-7 MW-8 MW-10S MW-10D MW-11S TABLE 8 Summary of Geochemical Parameters Closed Randolph County Landfill, Permit No. 76-01 Detected Monitoring Constituent/Parameter Units Date Method Detection Limit Upgradient Downgradient Wells BlanksPractical Quantatation Limit Pentanoic Acid mg/L 04/11/11 0.00007 0.0005 ND ND --ND ND ND ND ND ND mg/L 10/28/15 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 04/05/16 0.00007 0.0005 ND ND ND 0.26 ND ND ND ND ND mg/L 10/04/16 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 04/03/17 0.00007 0.0005 0.18 J ND ND ND ND ND ND ND ND mg/L 10/03/17 0.00007 0.0005 ND ND ND ND ND ND ND ND ND mg/L 04/16/19 0.14 0.2 ND ND ND ND ND ND ND ND ND mg/L 04/14/20 0.14 0.2 ND --ND ND ND ND ND ND ND ug/L 10/07/20 0.14 0.2 ND ND ND ND ND ND ND ND ND mg/L 05/22/23 0.056 ----ND ND ND ND ND ND ND -- Carbon dioxide mg/L 04/11/11 2 --43 167 --307 62.3 ND 79.0 53.2 ND mg/L 10/28/15 0.21 --237 295 89.7 1030 166 967 129 171 ND mg/L 04/05/16 0.21 --73.5 113 52.6 355 106 179 67.4 94.3 0.4 mg/L 10/04/16 0.005 --63 120 75 560 110 190 320 99 ND mg/L 04/03/17 0.24 --61 120 48 430 74 150 250 57 ND mg/L 10/03/17 0.51 --120 200 80 520 110 280 340 79 ND mg/L 05/22/18 0.51 --57 110 92 540 120 190 420 110 ND mg/L 10/23/18 0.1 5.0 68 180 110 480 87 290 390 100 ND mg/L 04/16/19 0.1 5.0 81 91 55 490 73 260 440 97 ND mg/L 10/15/19 0.1 5.0 88 240 80 600 100 290 400 110 ND mg/L 04/14/20 0.1 5.0 70 160 63 370 92 200 360 110 ND mg/L 10/07/20 2.5 5.0 37 85 40 233 64 137 186 48 ND mg/L 05/10/21 2.5 5.0 35 56 47 172 38 115 67 12 ND mg/L 10/06/21 2.5 5.0 84 161 65 446 96 326 354 111 ND mg/L 05/17/22 2.5 18 --106 55 258 64 143 229 72 ND mg/L 10/10/22 0.21 ----142 74.2 237 80.5 230 256 81.3 ND mg/L 05/22/23 0.21 ----69.9 42.9 228 24.1 166 220 39.2 ND Pyruvic Acid mg/L 04/11/11 0.1 5.0 ND ND --ND ND ND ND ND ND mg/L 10/28/15 0.012 --ND ND ND ND ND ND ND ND ND mg/L 04/05/16 0.012 --ND 0.023 J ND 0.018 J 0.017 J 0.02 J ND 0.014 J ND mg/L 10/04/16 0.012 --ND ND ND ND ND ND ND ND ND mg/L 04/03/17 0.012 --ND ND ND 0.019 J ND ND ND ND ND mg/L 10/03/17 0.1 5.0 ND ND ND ND ND ND ND ND ND mg/L 04/16/19 0.021 0.07 ND ND ND ND ND ND ND ND ND mg/L 04/14/20 0.021 0.07 ND --ND ND ND ND ND ND ND mg/L 10/07/20 0.021 0.07 ND ND ND ND ND ND ND ND ND mg/L 05/22/23 0.06 ----ND ND ND ND ND ND ND -- mg/L 10/04/16 0.1 5.0 ND ND ND ND ND ND 8.8 ND ND mg/L 04/03/17 0.1 5.0 0.32 ND ND ND ND ND 7.8 ND ND mg/L 10/03/17 0.1 5.0 ND ND ND ND ND ND 9.3 ND ND mg/L 04/16/19 0.18 0.2 ND ND ND ND ND ND 6.9 ND ND mg/L 04/14/20 0.18 0.2 ND --ND ND ND ND 5.2 ND ND mg/L 10/07/20 0.18 0.2 ND ND ND ND ND ND 5.1 ND ND mg/L 05/22/23 0.12 0.2 --1.1 1.1 1.0 1.1 8.5 8.4 1.2 ND Propionic Acid mg/L 04/11/11 0.1 5.0 ND ND --ND ND ND ND ND ND mg/L 10/28/15 0.1 5.0 ND ND ND ND ND ND ND ND ND mg/L 04/05/16 0.1 5.0 ND ND ND ND ND ND ND ND ND mg/L 10/04/16 0.1 5.0 ND ND ND ND ND ND ND ND ND mg/L 10/04/16 0.1 5.0 ND ND ND ND ND ND ND ND ND mg/L 04/03/17 0.1 5.0 ND ND ND ND ND ND ND ND ND mg/L 10/03/17 0.1 5.0 ND 0.20 0.60 0.21 ND 0.20 ND 0.22 ND mg/L 04/16/19 0.065 0.1 ND ND ND ND ND ND ND ND ND mg/L 04/14/20 0.065 0.1 ND --ND ND ND ND ND ND ND mg/L 10/07/20 0.065 0.1 ND ND ND ND ND ND ND ND ND mg/L 05/22/23 0.053 ----0.19 J 0.19 J 0.17 J 0.19 J 1.7 J 1.7 J 0.24 J -- Butyric Acid mg/L 04/11/11 0.1 5.0 ND ND --ND ND ND ND ND ND mg/L 10/28/15 0.1 5.0 ND ND ND ND ND ND ND ND ND mg/L 04/05/16 0.1 5.0 ND ND ND ND ND ND ND ND ND mg/L 10/04/16 0.1 5.0 ND ND ND ND ND ND ND ND ND mg/L 04/03/17 0.1 5.0 ND ND ND 0.019 J ND ND ND ND ND mg/L 04/03/17 0.1 5.0 ND ND ND ND ND ND ND ND ND mg/L 10/03/17 0.1 5.0 ND ND ND ND ND ND ND ND ND mg/L 04/16/19 0.089 0.1 ND ND ND ND ND ND ND ND ND mg/L 04/14/20 0.089 0.1 ND --ND ND ND ND ND ND ND mg/L 10/07/20 0.089 0.1 ND ND ND ND ND ND ND ND ND mg/L 05/22/23 0.058 ----ND ND ND ND ND ND ND ND Formic Acid mg/L 05/22/23 0.055 ----5 5.4 5.6 5.2 51 4.9 6.1 -- Hydrogen nM 04/11/11 0.60 --2.7 0.75 --0.93 0.74 2.0 1.8 0.90 -- nM 10/28/15 0.088 --3.7 2.8 2.3 3.1 3.5 2.6 3.0 2.9 -- nM 04/05/16 0.088 --2.6 2.0 1.9 1.5 3.2 2.5 2.3 3.2 -- nM 10/04/16 0.60 --1.7 1.8 1.9 4.1 1.8 1.8 1.5 1.8 -- nM 04/03/17 0.075 --2.4 2.2 2.1 3.3 2.1 2.1 1.9 6.0 -- nM 10/03/17 0.16 ----9.0 1.8 25 1.6 2.0 22 2.1 ND nM 05/22/18 0.16 --4.5 4.8 4.4 4.8 4.9 4.8 4.9 6.9 ND nM 10/23/18 0.65 1.0 --2.0 2.2 1.7 2.2 1.8 1.9 2.1 -- nM 04/16/19 0.75 1.0 1.0 ND 1.3 ND 1.4 1.2 1.2 1.2 -- nM 10/15/19 0.75 1.0 1.2 1.6 --1.7 1.8 1.9 1.7 2.0 -- nM 04/14/20 0.75 1.0 1.9 1.5 96 1.5 1.6 3.6 1.7 20 -- nM 10/07/20 0.49 1.0 0.87 J 0.95 J 0.96 J 0.69 J 0.68 J 0.86 J 0.75 J 0.98 J -- nM 05/10/21 0.49 1.9 2.7 J 5.9 3.2 J 1.6 J 3.5 J 2.6 1.7 J 0.86 J -- nM 10/06/21 0.49 1.9 --1.2 J 0.92 J 0.87 J 0.94 J 0.73 J 1.0 J 58 -- nM 05/17/22 0.49 1.9 --5.9 0.75 J 25 1.50 J 43 40 56 -- nM 10/10/22 0.49 1.9 --1.2 J 1.3 J 1.2 J 1.10 J 23 4.1 0.85 J -- 3 of 5 September 2023 31404568.018 MW-5 MW-2 MW-3 MW-7 MW-8 MW-10S MW-10D MW-11S TABLE 8 Summary of Geochemical Parameters Closed Randolph County Landfill, Permit No. 76-01 Detected Monitoring Constituent/Parameter Units Date Method Detection Limit Upgradient Downgradient Wells BlanksPractical Quantatation Limit Ferrous Iron mg/L 04/11/11 ---------------------- (field)mg/L 10/28/15 ----ND 1.2 ND 2.2 --0.6 ND ND -- mg/L 04/05/16 ---------------------- (laboratory)mg/L 10/04/16 0.50 --ND ND 0.51 1.9 ND ND 7.5 ND -- (laboratory)mg/L 04/03/17 0.046 --ND 0.67 1.8 1.5 ND ND 7.0 ND -- (laboratory)mg/L 10/03/17 0.031 --ND 3.6 ND 3.1 ND ND 5.5 ND -- (laboratory)mg/L 05/22/18 0.5 --ND 0.53 ND 1.4 ND ND 6.5 ND -- (laboratory)mg/L 10/23/18 0.040 0.5 ND 1.2 ND 2.4 ND ND 5.6 ND -- (laboratory)mg/L 04/16/19 0.12 0.5 ND ND ND 1.1 ND ND 5.7 ND -- (laboratory)mg/L 10/15/19 0.05 0.1 ND ND ND 2.1 ND ND ND ND -- (laboratory)mg/L 04/14/20 0.05 0.1 0.95 ND 1.0 1.7 ND ND 6.7 ND -- (laboratory)mg/L 10/07/20 0.02 0.1 0.03 J 1.8 ND 3.1 ND 0.17 2.8 ND -- (laboratory)mg/L 10/06/21 0.02 0.1 ND 1.3 ND 3.0 ND 0.35 4.4 ND -- (laboratory)mg/L 05/17/22 0.01 0.1 --1.4 0.06 1.6 ND 0.14 5.9 ND -- (laboratory)mg/L 10/10/22 0.01 0.1 --0.1 0.06 0.077 ND ND 0.5 ND -- (laboratory)mg/L 05/22/23 0.014 0.1 --ND 0.024 J 0.055 0.021 J ND 0.461 ND -- pH (field)S.U.04/11/11 ----6.63 4.52 --4.61 5.80 5.45 6.35 5.08 -- S.U.10/28/15 ----6.71 4.68 5.62 4.70 5.99 5.29 6.72 5.33 -- S.U.04/05/16 ----6.66 4.59 5.63 4.73 5.82 5.05 6.59 5.48 -- S.U.10/04/16 ----6.17 4.18 5.93 4.49 6.27 5.00 5.93 4.83 -- S.U.04/03/17 ----6.90 4.47 6.09 4.99 6.16 5.25 6.14 4.99 -- S.U.10/03/17 ----6.75 4.57 5.89 4.60 5.81 5.33 6.08 4.96 -- S.U.05/22/18 ----6.93 4.58 5.61 4.83 5.93 5.28 6.21 5.22 -- S.U.10/23/18 ----6.90 5.09 5.81 5.13 6.10 5.55 6.28 5.44 -- S.U.04/16/19 ----7.05 4.95 6.26 4.93 6.29 5.41 6.14 5.61 -- S.U.10/15/19 ----6.98 5.08 6.44 5.06 6.08 5.55 6.21 5.77 -- S.U.04/14/20 ----6.97 4.70 5.89 4.94 5.95 5.56 6.43 5.48 -- S.U.10/07/20 ----6.79 5.07 5.56 4.98 5.53 5.47 6.22 5.04 -- S.U.05/10/21 ----7.06 4.61 6.04 4.74 6.16 4.98 6.12 5.51 -- S.U.10/06/21 ----7.04 5.10 5.94 4.79 6.07 5.47 6.27 4.88 -- S.U.05/17/22 ----6.92 4.65 5.70 5.09 5.88 5.57 6.31 5.60 -- S.U.05/25/22 ------4.59 -------------- S.U.10/10/22 ----Dry 4.95 5.95 5.16 6.06 5.36 6.08 5.67 -- S.U.05/23/23 ------5.24 6.02 5.30 5.95 5.83 6.31 5.42 -- Specific Conductivity (field)uS/cm 04/11/11 ----884 132 --112 214 267 1665 71 -- uS/cm 10/28/15 ----794 186 106 141 230 263 1551 64.8 -- uS/cm 04/05/16 ----902 81 116 104 226 214 1614 72 -- uS/cm 10/04/16 ----843 91 109 148 232 193 1420 79 -- uS/cm 04/03/17 ----715 104.8 123 108 181 197 1276 77.1 -- uS/cm 10/03/17 ----811 145 139 125 232 194 1160 95 -- uS/cm 05/22/18 ----734 82.5 115.4 125.2 249.7 186.8 1314 75.9 -- uS/cm 10/23/18 ----812 102.4 128.6 105.7 223.4 279.2 1142 70.5 -- uS/cm 04/16/19 ----912 51.6 115.5 90.7 193.2 184.2 1364 67.0 -- uS/cm 10/15/19 ----996 146 188 116 238 283 1263 95.2 -- uS/cm 04/14/20 ----983 90.3 102 102 192 140 1157 63.1 -- uS/cm 10/07/20 ----947 103 129 116 203 207 1012 70.4 -- uS/cm 05/10/21 ----986 82 127 76 152 166 1291 49.7 -- uS/cm 10/06/21 ----751 145 114 91 176 240 98.6 54.9 -- uS/cm 05/17/22 ----825 99.0 124 70 161 181 1015 56.9 -- uS/cm 05/25/22 ------129 -------------- uS/cm 10/10/22 ----Dry 202 104 135 190 329 1128 83.8 -- uS/cm 05/23/23 ------73 142 92 147 243 1367 68.2 -- Temperature (field)Celsius 04/11/11 ----16.6 15.5 --16.4 14.7 15.4 16.0 16.9 -- Celsius 10/28/15 ----18.5 18.7 16.4 17.3 16.9 17.1 16.0 18.4 -- Celsius 04/05/16 ----14.9 15.2 14.6 16.2 13.4 12.7 13.1 16.1 -- Celsius 10/04/16 ----17.3 16.3 17.5 17.3 18.3 17.0 16.1 18.0 -- Celsius 04/03/17 ----15.6 16.6 15.1 16.3 14.0 15.9 16.1 17.2 -- Celsius 10/03/17 ----19.8 21.6 20.3 18.1 17.5 16.8 16.2 21.2 -- Celsius 05/22/18 ----20.3 16.4 16.8 17.4 15.9 15.4 16.4 17.0 -- Celsius 10/23/18 ----17.9 15.6 15.4 16.5 16.8 15.5 15.7 17.6 -- Celsius 04/16/19 ----16.3 15.7 13.7 17.6 14.3 14.0 14.4 15.8 -- Celsius 10/15/19 ----17.5 17.0 17.2 17.2 17.7 17.4 17.1 19.3 -- Celsius 04/14/20 ----16.2 13.7 13.9 16.0 14.1 14.6 15.1 16.9 -- Celsius 10/07/20 ----17.2 17.3 17.1 18.5 17.9 16.3 16.8 19.5 -- Celsius 05/10/21 ----17.8 16.3 14.9 16.5 14.3 14.8 15.1 16.5 -- Celsius 10/06/21 ----18.4 17.2 17.2 17.6 17.6 16.8 16.6 18.9 -- Celsius 05/17/22 ----19.9 16.1 15.4 18.2 14.5 15.8 15.6 17.3 -- Celsius 05/25/22 ------15.0 -------------- Celsius 10/10/22 ----Dry 16.1 14.3 17.1 16.4 16.2 16.2 18.5 -- Celsius 05/23/23 ------15.5 15.0 15.8 15.1 15.2 15.5 16.1 -- 4 of 5 September 2023 31404568.018 MW-5 MW-2 MW-3 MW-7 MW-8 MW-10S MW-10D MW-11S TABLE 8 Summary of Geochemical Parameters Closed Randolph County Landfill, Permit No. 76-01 Detected Monitoring Constituent/Parameter Units Date Method Detection Limit Upgradient Downgradient Wells BlanksPractical Quantatation Limit Turbidity (field)NTU 04/11/11 ----4.39 91.4 --16.7 34.7 5.35 19.9 2.76 -- NTU 10/28/15 ----3.98 50.5 85.5 1.29 14.0 1.33 15.6 2.42 -- NTU 04/05/16 ----17.9 44.0 48.5 17.3 4.97 1.23 2.97 5.73 -- NTU 10/04/16 ----3.10 42.4 201 1.24 1.05 1.41 28.9 7.17 -- NTU 04/03/17 ----1.14 67.9 81.0 2.59 1.46 1.80 13.4 10.8 -- NTU 10/03/17 ----2.19 21.8 57.3 2.60 4.42 6.05 2.81 6.96 -- NTU 05/22/18 ----2.70 60.0 96.7 9.00 1.69 2.20 2.30 8.73 -- NTU 10/23/18 ----7.90 65.9 129 0.80 2.93 0.93 0.62 16.0 -- NTU 04/16/19 ----0.83 167 78.5 8.19 3.44 0.80 0.45 9.06 -- NTU 10/15/19 ----1.35 145 50.3 0.40 7.68 0.74 0.38 2.09 -- NTU 04/14/20 ----0.61 65.4 35.4 2.24 3.31 1.25 1.33 4.09 -- NTU 10/07/20 ----4.24 78.9 56.7 0.01 5.36 2.37 2.12 8.97 -- NTU 05/10/21 ----0.48 34.6 48.0 0.73 8.76 0.51 0.54 2.62 -- NTU 10/06/21 ----7.79 21.0 77.2 1.44 4.33 3.52 1.29 3.39 -- NTU 05/17/22 ----9.79 79.5 39.2 6.44 2.47 0.77 1.26 2.29 -- NTU 05/25/22 ------35.5 -------------- NTU 10/10/22 ----Dry 47.1 110 1.82 2.95 0.64 7.07 0.21 -- NTU 05/23/23 ------99.4 45.5 0.20 9.02 0.20 0.15 6.72 -- Dissolved Oxygen (field)mg/L 04/11/11 ----2.69 0.97 --1.10 4.24 1.67 3.20 2.07 -- mg/L 10/28/15 ----2.16 1.38 2.95 0.71 3.60 1.55 3.92 1.78 -- mg/L 04/05/16 ----3.43 0.85 4.01 0.85 3.39 2.24 4.80 2.27 -- mg/L 10/04/16 ----3.55 1.23 2.20 0.99 3.81 1.48 0.45 1.99 -- mg/L 04/03/17 ----5.94 0.97 3.23 0.82 5.60 2.53 0.81 3.72 -- mg/L 10/03/17 ----3.98 0.43 2.27 0.78 4.80 0.52 1.66 2.12 -- mg/L 05/22/18 ----4.71 1.02 2.34 0.39 1.78 0.87 0.68 3.33 -- mg/L 10/23/18 ------0.34 1.23 0.42 2.45 0.42 0.56 1.72 -- mg/L 04/16/19 ----1.54 0.26 4.03 0.32 2.41 0.63 0.33 2.18 -- mg/L 10/15/19 ----1.44 0.33 4.89 0.40 3.60 0.31 0.38 0.95 -- mg/L 04/14/20 ----4.88 0.55 1.41 0.82 2.31 1.47 0.35 1.99 -- mg/L 10/07/20 ----2.53 0.26 0.68 0.26 2.34 1.27 0.42 1.64 -- mg/L 05/10/21 ----2.67 3.03 1.09 0.26 0.86 1.10 0.40 1.46 -- mg/L 10/06/21 ----3.60 0.35 2.36 0.81 1.36 1.15 0.83 1.92 -- mg/L 05/17/22 ----4.29 1.49 1.41 0.99 1.69 4.10 0.96 3.07 -- mg/L 05/25/22 ------0.61 -------------- mg/L 10/10/22 ----Dry 0.92 0.99 1.39 3.50 0.24 0.21 0.62 -- mg/L 05/23/23 ------0.49 1.92 0.37 1.75 0.82 0.26 2.10 -- ORP (field)mV 04/11/11 ----150 237 --238 167 158 119 179 -- mV 10/28/15 ----11.0 90.0 199 137 178 115 99.4 178 -- mV 04/05/16 ----204 296 202 188 193 193 140 177 -- mV 10/04/16 ----220 304 60.2 196 90.0 247 8.6 280 -- mV 04/03/17 ----211 160 110 125 202 139 111 149 -- mV 10/03/17 ----110 84.1 81.4 126 118 117 233 79.8 -- mV 05/22/18 ----172 202 221 142 230 144 -3.8 221 -- mV 10/23/18 ------148 121 138 133 139 -0.8 179 -- mV 04/16/19 ----147 398 294 123 348 96.2 -5.0 382 -- mV 10/15/19 ----277 151 330 144 358 113 160 211 -- mV 04/14/20 ----95.8 269 65.2 57.2 183 304 1.21 243 -- mV 10/07/20 ----10.9 92.8 -196 119.8 -24.3 189 10.4 -123 -- mV 05/10/21 ----225 74.5 24.7 58.7 243 147 -22.1 196 -- mV 10/06/21 ----152 74.1 54.4 172 176 130 24.8 295 -- mV 05/17/22 ----179 160 55.5 174 123 45 -7.1 187 -- mV 05/25/22 ------180 -------------- mV 10/10/22 ----Dry 86.6 68.2 123 124.9 126.9 17.0 157.1 -- mV 05/23/23 -------302 -64.2 -318 -29.0 -341 -270 -5.1 -- Notes:ug/L =micrograms per liter mg/L = milligrams per liter ND =Not detected at the stated reporting limit for data before October 2007 and not detected at the laboratory detection limit for data from October 2007 forward NM =Not measured J =estimated concentration B =Blank-qualified result U=Compound was analyzed for but not detected -- =no data available # =EPA Action Level * =EPA Secondary MCL Blanks =field, trip and method blanks Bold Only = Shaded and Bold =and EPA MCL NC 2L =North Carolina 2L Groundwater Standard EPA MCL =US Environmental Protection Agency Maximum Contaminant Level SWS Reporting Limit =NCPQL or lab-specific reporting limit prior to October 2007 and NCSWSL starting in October 2007 Wells MW-4, MW-A1, MW-A2, and MW-A3 are not sampled as part of the compliance network. 1)Well MW-3 went dry before hydrogen could be collected during the October 2019 event. 2)The following dilutions were noted for the May 2023 event: chloride MW-10D (4x); carbon dioxide (20x) all sampling points; hydrogen (2x) MW-2, -7, -8, -11S; ferrous iron (5x) MW-10D 5 of 5 September 2023 31404568.018 MW-5 MW-2 MW-3 MW-6 MW-7 MW-8 MW-9 MW-10S MW-10D MW-11S MW-11D 1.8 ND ND --------ND 1.9 ND ND --------ND1.3 ND ND --------ND2.0 ND ND --------ND1.3 ND ND --------ND2.0 ND ND ND ND ND ND ND1.3 ND ND --------ND1.9 ND ND --------ND1.3 ND ND --------ND1.4 ND ND --------ND1.1 ND ND --------ND1.4 ND ND --------ND 1.4 ND ND ND ND ND --ND 1.4 ND ND ND 0.42 J ND --ND1.4 ND ND ND ND ND --ND1.3 ND ND ND ND ND --ND 1.2 0.50 J ND --ND 17 ND ND --------ND13NDND--------ND21NDND--------ND 13 ND ND --------ND13NDND--------ND17NDND--------ND20NDND--------ND26NDND--------ND31NDND--------ND39NDND--------ND15.6 ND ND --------ND35.6 ND ND --------ND12.8 ND ND --------ND6.1 ND ND --------ND13.5 ND ND --------ND 16.4 ND ND --------ND 12 ND ND --------ND 7.8 1.7 J 2.5 J --------ND152.6 J 1.4 J --------ND6.8 2.5 J 3.0 J --------ND112.6 J 1.1 J --------ND6.9 2.4 J 2.7 J --------ND123.9 J 1.5 J --------ND 13 5.6 1.9 J 26 23 ND ND ND 6.6 5.7 0.88 J --------ND6.9 1.0 J --------ND 6.6 1.3 J --------ND9.8 0.80 J --------ND 18 1.2 J ND 3.1 J 11 0.90 J 59 12 ND ND ND6.7 1.9 J ND 2.0 J 6.8 1.4 J 23 7.5 ND --ND100.81 J 21 8.7 ND --ND9.8 2.4 J 0.46 J 2.1 J 10 0.86 J 36 10 ND --ND190.40 J 3.6 J 1.9 J 12 1.2 J 57 7.3 ND --ND7.3 1.5 J ND 1.2 J 8.7 0.50 J 21 7.1 ND --ND142.8 ND 1.1 5.5 0.53 J 43 8.0 ND --ND276.3 ND --ND21ND4.2 1.2 13 0.96 J 71 5.2 ND --ND100.96 J ND ND 8.7 0.42 J 18 3.0 ND --ND8.6 2.5 1.8 0.58 J 7.4 0.70 J 36 3.6 ND --ND220.69 J ND --ND111.2 ND ND 13 ND 49 3.5 ND --ND132.6 1.8 ND 7.9 ND 17 2.8 ND --ND110.46 J ND 0.9 J 7.5 0.74 J 44 2.6 J 0.349 J --ND38.9 2.21 J ND --ND Downgradient Wells BlanksDetected Monitoring Constituent/Parameter Units Date Detection Reporting Well 1 of 3 September 2023 31404568.018 MW-5 MW-2 MW-3 MW-6 MW-7 MW-8 MW-9 MW-10S MW-10D MW-11S MW-11D Downgradient Wells BlanksDetected Monitoring Constituent/Parameter Units Date Detection Reporting Well Tetrachloroethene ug/L 09/22/94 ----5 ND ----ND ND ND ND --------NDNC 2L = 0.7 ug/L ug/L 11/08/94 ----5 ND ----ND ND ND ND --------NDEPA MCL = 5 ug/L ug/L 01/18/95 ----5 ND ----ND ND ND ND --------NDug/L 04/23/96 ----5 ND ----ND ND ND ND --------NDug/L 06/17/97 ----5 ND ----ND ND ND ND --------NDug/L 10/16/97 ----5 ND ----ND ND ND ND --------NDug/L 04/21/98 ----5 ND ----ND ND ND ND --------NDug/L 04/07/99 ----5 ND ----ND ND ND ND --------NDug/L 10/13/99 ----5 ND ----ND ND ND ND --------NDug/L 04/05/00 ----5 ND ----ND ND ND ND --------NDug/L 10/25/00 ----5 ND ----ND ND ND ND --------NDug/L 04/04/01 ----5 ND ----ND ND ND ND --------NDug/L 04/08/02 ----5 ND ND --ND ND ND ND --------NDug/L 10/21/02 ----5 ND ND --ND ND ND ND --------NDug/L 04/14/03 ----5 ND ND --ND ND ND ND --------NDug/L 10/01/03 ----5 ND ND --ND ND ND ND --------NDug/L 04/05/04 ----5 ND ND --ND ND ND ND --------NDug/L 10/18/04 ----5 ND ND --ND ND ND ND --------NDug/L 04/07/05 ----5 ND ND --ND ----------------ug/L 10/06/05 ----5 ND ND --ND ND ND ND --------NDug/L 04/03/06 ----5 ND ND --ND ND ND ND --------NDug/L 10/03/06 ----5 ND ND --ND ND ND ND --------NDug/L 04/05/07 ----3 ND ND --ND ND ND ND --------NDug/L 10/18/07 ----1 ND ND --ND --0.2 J 0.3 J --------NDug/L 04/29/08 ----1 ND ----ND ND ND ND --------NDug/L 10/23/08 ----1 ND ----ND ND ND ND --------NDug/L 04/07/09 ----1 ND ----ND ND ND ND --------NDug/L 10/19/09 ----1 ND ----ND ND ND ND --------NDug/L 04/28/10 ----1 ND 0.43 J --ND ND ND 0.49 J --------NDug/L 10/12/10 ----1 ND ----ND ND 0.48 J ND --------NDug/L 04/11/11 ----1 ND ----ND ND ND ND --------NDug/L 10/04/11 ----1 ND ----ND ND ND ND 2.8 ND ND ND NDug/L 04/10/12 ----1 ND ----ND ND 0.56 J ND --------NDug/L 10/15/12 ----1 ND ----ND ND 0.46 J ND --------NDug/L 04/09/13 ----1 ND ----ND ND 0.77 J ND --------NDug/L 10/08/13 ----1 ND ----ND ND 0.45 J ND --------NDug/L 04/08/14 ----1 ND ----ND ND 0.64 J ND --------NDug/L 10/08/14 0.17 --1 ND ----ND ND 0.71 J ND --------NDug/L 04/08/15 0.17 --1 ND ----ND ND ND ND --------NDug/L 10/28/15 0.17 --1 ND ND ND ND ND 0.98 J ND 7.0 ND ND --NDug/L 04/05/16 0.17 --1 ND ND ND ND ND ND ND 1.0 ND ND --NDug/L 10/04/16 0.17 --1 ND 0.53 J 0.44 J ND ND 0.66 J ND 1.3 ND ND --NDug/L 04/03/17 0.17 --1 ND ND ND ND ND 0.63 J ND 1.6 ND ND --NDug/L 10/03/17 0.17 --1 ND ND ND ND ND 1.3 ND 5.4 ND ND --NDug/L 05/22/18 0.17 --1 ND ND ND ND ND ND ND 1.1 ND ND --NDug/L 10/23/18 0.17 1 --ND ND ND ND ND 0.60 J ND 2.2 ND ND --NDug/L 04/16/19 0.17 1 --ND ND ND ND ND 0.43 J ND 1.2 ND ND --NDug/L 10/15/19 0.17 1 --ND ND ND ND ND 0.95 J ND 4.3 ND ND --NDug/L 04/17/20 0.17 1 --ND ND ND ND ND 0.53 J ND 1.1 ND ND --NDug/L 10/07/20 0.17 1 --ND ND ND ND ND 0.63 J ND 1.6 ND ND --NDug/L 05/10/21 0.17 1 --ND ND ND ND ND ND ND 1.4 ND ND --NDug/L 10/06/21 0.17 1 --ND ND ND ND ND 1.1 ND 2.6 ND ND --NDug/L 05/18/22 0.17 1 --ND ND ND ND ND 0.60 J ND 0.75 J ND ND --NDug/L 10/10/22 0.17 1 --DRY ND ND ND ND 0.61 J ND 2.2 ND ND --NDug/L 05/22/23 0.17 1 --DRY ND ND ND ND 0.445 J ND 1.87 J ND ND --NDTrichloroetheneug/L 09/22/94 ----5 ND ----ND ND ND ND --------NDNC 2L = 3 ug/L ug/L 11/08/94 ----5 ND ----ND ND ND ND --------NDEPA MCL = 5 ug/L ug/L 01/18/95 ----5 ND ----ND ND ND ND --------NDug/L 04/23/96 ----5 ND ----ND ND ND ND --------NDug/L 06/17/97 ----5 ND ----ND ND ND ND --------NDug/L 10/16/97 ----5 ND ----ND ND ND ND --------NDug/L 04/21/98 ----5 ND ----ND ND ND ND --------NDug/L 04/07/99 ----5 ND ----ND ND ND ND --------NDug/L 10/13/99 ----5 ND ----ND ND ND ND --------NDug/L 04/05/00 ----5 ND ----ND ND ND ND --------NDug/L 10/25/00 ----5 ND ----ND ND ND ND --------NDug/L 04/04/01 ----5 ND ----ND ND ND ND --------NDug/L 04/08/02 ----5 ND ND --ND ND ND ND --------NDug/L 10/21/02 ----5 ND ND --ND ND ND ND --------NDug/L 04/14/03 ----5 ND ND --ND ND ND ND --------NDug/L 10/01/03 ----5 ND ND --ND ND ND ND --------NDug/L 04/05/04 ----5 ND ND --ND ND ND ND --------NDug/L 10/18/04 ----5 ND ND --ND ND ND ND --------NDug/L 04/07/05 ----5 ND ND --ND ----------------ug/L 10/06/05 ----5 ND ND --ND ND ND ND --------NDug/L 04/03/06 ----5 ND ND --ND ND ND ND --------NDug/L 10/03/06 ----5 ND ND --ND ND ND ND --------NDug/L 04/05/07 ----3 ND ND --ND ND ND ND --------NDug/L 10/18/07 ----1 ND 0.5 J --ND --0.7 J 0.2 J --------NDug/L 04/29/08 ----1 ND ----ND ND 0.67 J 0.41 J --------NDug/L 10/23/08 ----1 ND ----ND 0.51 J 0.95 J ND --------NDug/L 04/07/09 ----1 ND ----ND ND 0.90 J 0.46 J --------NDug/L 10/19/09 ----1 ND ----ND 0.53 J 1.2 ND --------NDug/L 04/28/10 ----1 ND ND --ND ND 1.1 0.51 J --------NDug/L 10/12/10 ----1 ND ----ND 0.46 J 1.5 ND --------NDug/L 04/11/11 ----1 ND ----ND ND 1.4 ND --------NDug/L 10/04/11 ----1 ND ----ND ND 1.6 ND 2.2 ND ND ND NDug/L 04/10/12 ----1 ND ----ND ND 1.6 0.39 J --------NDug/L 10/15/12 ----1 ND ----ND ND 1.8 ND --------NDug/L 04/09/13 ----1 ND ----ND ND 2.4 ND --------NDug/L 10/08/13 ----1 ND ----ND ND 1.9 ND --------NDug/L 04/08/14 ----1 ND ----ND ND 2.3 ND --------NDug/L 10/08/14 0.15 --1 ND ----ND ND 2.7 ND --------NDug/L 04/08/15 0.15 --1 ND ----ND ND 0.96 J ND --------NDug/L 10/28/15 0.15 --1 0.50 J ----ND ND 3.1 ND 3.6 ------NDug/L 04/05/16 0.15 --1 ND ND ND ND ND 1.4 ND 0.99 J ND ND --NDug/L 10/04/16 0.15 --1 ND ND 0.46 J ND ND 2.4 ND 1.4 ND ND --NDug/L 04/03/17 0.15 --1 ND ND ND ND ND 2.9 ND 1.5 ND ND --NDug/L 10/03/17 0.15 --1 ND ND ND ND ND 3.2 ND 4.1 ND ND --NDug/L 05/22/18 0.15 --1 ND ND ND ND ND 1.9 ND 1.0 ND ND --NDug/L 10/23/18 0.15 1 --ND ND 0.45 J ND ND 1.2 ND 2.1 ND ND --NDug/L 04/16/19 0.15 1 --ND ND ND ND ND 1.4 ND 1.2 ND ND --NDug/L 10/15/19 0.15 1 --ND ND ND ND ND 2.9 ND 3.9 ND ND --NDug/L 04/14/20 0.15 1 --ND ND 0.41 J ND ND 1.9 ND 0.94 J ND ND --NDug/L 10/07/20 0.15 1 --ND ND ND ND ND ND ND 1.5 ND ND --NDug/L 05/10/21 0.15 1 --ND ND ND ND ND ND ND ND ND ND --NDug/L 10/06/21 0.15 1 --ND ND ND ND ND 1.9 ND 2.3 ND ND --NDug/L 05/18/22 0.15 1 --ND ND ND ND ND ND ND ND ND ND --NDug/L 10/10/22 0.15 1 --DRY ND ND ND ND 1.6 ND 2.0 ND ND --NDug/L 05/22/23 0.15 1 --DRY ND ND ND 0.412 J ND ND ND ND ND --ND 2 of 3 September 2023 31404568.018 MW-5 MW-2 MW-3 MW-6 MW-7 MW-8 MW-9 MW-10S MW-10D MW-11S MW-11D Downgradient Wells BlanksDetected Monitoring Constituent/Parameter Units Date Detection Reporting Well Vinyl chloride ug/L 09/22/94 ----10 ND ----ND ND ND ND --------NDNC 2L = 0.03 ug/L ug/L 11/08/94 ----10 ND ----ND ND ND ND --------NDEPA MCL = 2 ug/L ug/L 01/18/95 ----10 ND ----ND ND ND ND --------NDug/L 04/23/96 ----10 ND ----ND ND ND ND --------NDug/L 06/17/97 ----10 ND ----ND ND ND ND --------NDug/L 10/16/97 ----10 ND ----ND ND ND ND --------NDug/L 04/21/98 ----10 ND ----ND ND ND ND --------NDug/L 04/07/99 ----10 ND ----ND ND ND ND --------NDug/L 10/13/99 ----10 ND ----ND ND ND ND --------NDug/L 04/05/00 ----10 ND ----ND ND ND ND --------NDug/L 10/25/00 ----10 ND ----ND ND ND ND --------NDug/L 04/04/01 ----10 ND ----ND ND ND ND --------NDug/L 04/04/02 ----10 ND ND --ND ND ND ND --------NDug/L 10/21/02 ----10 ND ND --ND ND ND ND --------NDug/L 04/14/03 ----10 ND ND --ND ND ND ND --------NDug/L 10/01/03 ----10 ND ND --ND ND ND ND --------NDug/L 04/05/04 ----10 ND ND --ND ND ND ND --------NDug/L 10/18/04 ----10 ND ND --ND ND ND ND --------NDug/L 04/07/05 ----10 ND ND --ND ND ND ND --------NDug/L 10/06/05 ----10 ND ND --ND ND ND ND --------NDug/L 04/03/06 ----10 ND ND --ND ND ND ND --------NDug/L 10/03/06 ----10 ND ND --ND ND ND ND --------NDug/L 04/05/07 ----10 ND ND --ND ND ND ND --------NDug/L 10/18/07 ----1 ND ND --ND --ND ND --------NDug/L 04/29/08 ----1 ND ----ND 0.41 J ND 0.54 J --------NDug/L 10/23/08 ----1 ND ----ND 0.93 J ND ND --------NDug/L 04/07/09 ----1 ND ----ND 0.46 J ND 0.71 J --------NDug/L 10/19/09 ----1 ND ----ND 1.2 ND ND --------NDug/L 04/28/10 ----1 ND ND --ND 0.63 J ND 0.64 J --------NDug/L 10/12/10 ----1 ND ----ND 1.0 ND ND --------NDug/L 04/11/11 ----1 ND ----ND 0.70 J ND ND --------NDug/L 10/04/11 ----1 ND ----ND 1.1 ND ND ND 0.63 J ND ND NDug/L 04/10/12 ----1 ND ----ND 0.51 J ND 0.34 J --------NDug/L 10/15/12 ----1 ND ----ND 1.0 ND ND --------NDug/L 04/09/13 ----1 ND ----ND 0.75 J ND ND --------NDug/L 10/08/13 ----1 ND ----ND 0.74 J ND ND --------NDug/L 04/08/14 ----1 ND ----ND 0.51 J ND ND --------NDug/L 10/08/14 0.32 --1 ND ----ND 0.52 J ND ND --------NDug/L 04/08/15 0.32 --1 ND ----ND ND ND ND --------NDug/L 10/28/15 0.32 --1 ND ND ND ND 0.48 J ND ND 1.3 ND ND --NDug/L 04/05/16 0.32 --1 ND ND ND ND ND ND ND ND ND ND --NDug/L 10/04/16 0.32 --1 ND ND ND ND ND ND ND ND 0.78 J ND --NDug/L 04/03/17 0.32 --1 ND ND ND ND ND ND ND 0.70 J 0.96 J ND --NDug/L 10/03/17 0.32 --1 ND ND ND ND ND ND ND 1.2 0.75 J ND --NDug/L 05/22/18 0.32 --1 ND ND ND ND ND ND ND ND 0.83 J ND --NDug/L 10/23/18 0.32 1 --ND ND ND ND ND ND ND 1.0 0.79 J ND --NDug/L 04/16/19 0.32 1 --ND ND ND ND ND ND ND 0.65 J 0.73 J ND --NDug/L 10/15/19 0.32 1 --ND ND ND ND ND ND ND 1.3 0.47 J ND --NDug/L 04/14/20 0.32 1 --ND ND ND ND ND ND ND ND ND ND --NDug/L 10/07/20 0.32 1 --ND ND ND ND ND ND ND 0.93 J ND ND --NDug/L 05/10/21 0.32 1 --ND ND ND ND ND ND ND ND ND ND --NDug/L 10/06/21 0.32 1 --ND ND ND ND ND ND ND 0.98 J ND ND --NDug/L 05/18/22 0.32 1 --ND ND ND ND ND ND ND 0.47 J 0.58 J ND --NDug/L 10/10/22 0.32 1 --DRY ND ND ND ND ND ND 0.86 J 0.36 J ND --NDug/L 05/22/23 0.32 1 --DRY ND ND ND ND ND ND 0.879 J 0.273 J ND --ND Notes:ug/L =micrograms per litermg/L = milligrams per literND =Not detected at the stated reporting limit for data before October 2007 and not detected at the laboratory detection limit for data from October 2007 forwardNM =Not measuredJ =Prior to the October 2018 event, J flags are estimated values below the SWS Reporting limit. Beginning with the October 2018 event, J flags are estimated values between MDL and PQL.B =Blank-qualified resultR =unusable data-- =no data availableBlanks =field, trip and method blanksBold Only =Concentration above current NC 2L Groundwater Standard or NC SWS Groundwater Protection StandardShaded and Bold =Concentration above current NC 2L Groundwater Standard or NC SWS Groundwater Protection Standard and EPA MCLNC 2L =North Carolina 2L Groundwater StandardEPA MCL =US Environmental Protection Agency Maximum Contaminant LevelSWS Reporting Limit =NCPQL or lab-specific reporting limit prior to October 2007 and NCSWSL starting in October 2007Historical data prior to April 2008 provided by the County as taken from historical reports from Hazen and Sawyer and Environment 1. 3 of 3 FIGURE 670 670 660 670 660 660 65 0 640 630 63 0 62 0 62 0 610 610 600 600 590 590 570 570 580 580 660 670 650 640 i1 i2 i3 680 690 690 680 700 700 680 680 MW-11D 565.52 MW-11S 566.42 MW-7 566.97 MW-2 566.50 GM-3 SW-2 MW-10S 584.17 MW-10D 589.52 MW-1 595.44 GM-4 MW-6 613.74 MW-A1 615.75 MW-A2 636.24 MW-A3 681.89 701.21 MW-4 MW-5 653.42 GM-5 MW-9 596.97 GM-1 GM-2 579.28 MW-8 565.78 MW-3 SW-1 SITE LOCATION SW-3 SW-4 CONSULTANT DESIGN PREPARED REVIEW APPROVED YYYY-MM-DD TITLE PROJECT No.Rev. PROJECTCLIENT Pa t h : \\ r i c h m o n d \ d a t a \ P l a n P r o d u c t i o n D a t a F i l e s \ D r a w i n g D a t a F i l e s \ 1 9 - 1 3 3 9 0 7 2 2 \ 0 2 0 _ O C T 2 0 2 2 G W M A P \ A c t i v e D r a w i n g s \ | F i l e N a m e : 31 4 0 4 5 6 8 _ 1 0 0 _ 0 1 . d w g IF T H I S M E A S U R E M E N T D O E S N O T M A T C H W H A T I S S H O W N , T H E S H E E T S I Z E H A S B E E N M O D I F I E D F R O M : A N S I D 0 1 i n 31404568.018 FIGURE 10 2023-08-25 SIB JS RANDOLPH COUNTY LANDFILL PERMIT NO. 76-01 WASTE MANAGEMENT GROUNDWATER SURFACE CONTOUR MAP MAY 22, 2023 SITE LOCATION MAP (NOT TO SCALE) 0 FEET 150 300 SCALE EXISTING 10 FT GROUND SURFACE CONTOUR EXISTING 2 FT GROUND SURFACE CONTOUR APPROXIMATE LIMITS OF WASTE EXISTING ROAD GROUNDWATER ELEVATION 10 FT CONTOURS GROUNDWATER FLOW ARROW COMPLIANCE MONITORING WELL AND GROUNDWATER ELEVATIONS NON-COMPLIANCE MONITORING WELL AND GROUNDWATER ELEVATIONS LANDFILL GAS MONITORING PROBE SURFACE WATER MONITORING POINT LEGEND NOTES 1.TOPOGRAPHIC CONTOUR INTERVAL = 2 FEET 2.GROUNDWATER SURFACE CONTOUR INTERVAL = 10 FEET 3.GROUNDWATER ELEVATIONS MEASURED ON MAY 22, 2023. 4.GROUNDWATER CONTOURS BASED ON LINEAR INTERPOLATION BETWEEN AND EXTRAPOLATION FROM KNOWN DATA, TOPOGRAPHIC CONTOURS, AND KNOWN FIELD CONDITIONS. THEREFORE, GROUNDWATER CONTOURS MAY NOT REFLECT ACTUAL CONDITIONS. 5.GROUNDWATER CONTOUR LINES SHOW THE WATER TABLE SHAPE AND ELEVATION. THESE CONTOURS ARE INFERRED LINES FOLLOWING THE GROUNDWATER SURFACE AT A CONSTANT ELEVATION ABOVE SEA LEVEL. THE GROUNDWATER FLOW DIRECTION IS GENERALLY PERPENDICULAR TO THE GROUNDWATER SURFACE CONTOURS, SIMILAR TO THE RELATIONSHIP BETWEEN SURFACE WATER FLOW AND TOPOGRAPHIC CONTOURS. 6.THE GROUNDWATER ELEVATION FOR MW-10D WAS NOT USED FOR CONTOURING. 7.MW-A1, MW-A2, MW-A3, MW-1, MW-2, MW-3, MW-4, MW-10D, MW-11S, AND MW-11D ARE NOT SAMPLED AS PART OF THE COMPLIANCE NETWORK. 8.BASE MAP PROVIDED BY HAZEN AND SAWYER, INC. OVERALL GROUND SURFACE TOPOGRAPHY OBTAINED FROM AERIAL SURVEY CONDUCTED BY KUCERA INTERNATIONAL INC., WILLOUGHBY, OHIO ON 8/2/93. 9.COORDINATE SYSTEM IS N.C. STATE PLANE GRID. 10.THE GROUNDWATER ELEVATIONS FOR DEEP WELLS DENOTED BY "D" WERE NOT USED IN THE CONSTRUCTION OF GROUNDWATER CONTOURS. 640 SW-1 GM-1 653.42 MW-5 i1 636.24 MW-A2 PG C-399 APPENDICES APPENDIX A Groundwater and Surface Water Sampling Logs APPENDIX B May 2023 Groundwater and Surface Water Certificates-ofAnalysis, Chain-of- Custody Forms,and Laboratory Data Reviews ANALYTICAL REPORT PREPARED FOR Attn: Darren Cox WSP USA Inc 5B Oak Branch Drive Greensboro, North Carolina 27407 Generated 6/6/2023 3:03:41 PM JOB DESCRIPTION Randolph County Landfill Randolph County - Spring JOB NUMBER 752-7507-1 See page two for job notes and contact information. Cary NC 27511 102-A Woodwinds Industrial Court Eurofins Raleigh Page 1 of 63 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Eurofins Raleigh Eurofins Savannah is a laboratory within Eurofins Environment Testing Southeast, LLC, a company within Eurofins Environment Testing Group of Companies Job Notes This report may not be reproduced except in full, and with written approval from the laboratory. The results relate only to the samples tested. For questions please contact the Project Manager at the e-mail address or telephone number listed on this page. The test results in this report relate only to the samples as received by the laboratory and will meet all requirements of the methodology, with any exceptions noted. This report shall not be reproduced except in full, without the express written approval of the laboratory. All questions should be directed to the Eurofins Environment Testing Southeast, LLC Project Manager. Authorization Generated 6/6/2023 3:03:41 PM Authorized for release by Amanda Gaines, Project Manager amanda.gaines@et.eurofinsus.com (919)677-1669 Page 2 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Table of Contents Client: WSP USA Inc Project/Site: Randolph County Landfill Laboratory Job ID: 752-7507-1 Page 3 of 63 Eurofins Raleigh6/6/2023 Cover Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Definitions/Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 Case Narrative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Detection Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7 Client Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Surrogate Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 QC Sample Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 QC Association Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 Lab Chronicle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53 Certification Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56 Method Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57 Sample Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58 Chain of Custody . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59 Receipt Checklists . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Definitions/Glossary Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Qualifiers GC/MS VOA Qualifier Description F1 MS and/or MSD recovery exceeds control limits. Qualifier J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Metals Qualifier Description F1 MS and/or MSD recovery exceeds control limits. Qualifier J Result is less than the RL but greater than or equal to the MDL and the concentration is an approximate value. Glossary These commonly used abbreviations may or may not be present in this report. ¤Listed under the "D" column to designate that the result is reported on a dry weight basis Abbreviation %R Percent Recovery CFL Contains Free Liquid CFU Colony Forming Unit CNF Contains No Free Liquid DER Duplicate Error Ratio (normalized absolute difference) Dil Fac Dilution Factor DL Detection Limit (DoD/DOE) DL, RA, RE, IN Indicates a Dilution, Re-analysis, Re-extraction, or additional Initial metals/anion analysis of the sample DLC Decision Level Concentration (Radiochemistry) EDL Estimated Detection Limit (Dioxin) LOD Limit of Detection (DoD/DOE) LOQ Limit of Quantitation (DoD/DOE) MCL EPA recommended "Maximum Contaminant Level" MDA Minimum Detectable Activity (Radiochemistry) MDC Minimum Detectable Concentration (Radiochemistry) MDL Method Detection Limit ML Minimum Level (Dioxin) MPN Most Probable Number MQL Method Quantitation Limit NC Not Calculated ND Not Detected at the reporting limit (or MDL or EDL if shown) NEG Negative / Absent POS Positive / Present PQL Practical Quantitation Limit PRES Presumptive QC Quality Control RER Relative Error Ratio (Radiochemistry) RL Reporting Limit or Requested Limit (Radiochemistry) RPD Relative Percent Difference, a measure of the relative difference between two points TEF Toxicity Equivalent Factor (Dioxin) TEQ Toxicity Equivalent Quotient (Dioxin) TNTC Too Numerous To Count Eurofins Raleigh Page 4 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: WSP USA Inc Job ID: 752-7507-1 Project/Site: Randolph County Landfill Job ID: 752-7507-1 Laboratory: Eurofins Raleigh Narrative Job Narrative 752-7507-1 Comments No additional comments. Receipt The samples were received on 5/25/2023 10:00 AM. Unless otherwise noted below, the samples arrived in good condition, and where required, properly preserved and on ice. The temperature of the cooler at receipt was 2.0º C. GC/MS VOA Method 8260D: The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 752-3101 were outside control limits for Carbon tetrachloride . See QC Sample Results for detail. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) recovery is within acceptance limits. Method 8260D: The CCV for analytical batch 752-3101 recovered outside control limits for the following analyte(s): 2-Butanone (MEK), 2-Hexanone, Acetone, Acrylonitrile, Bromomethane, Chloroethane, Chloromethane and Trichlorofluoromethane. These have been identified as a poor performing analytes when analyzed using this method; therefore, re-extraction/re-analysis was not performed. These results have been reported and qualified. Method 8260D: The continuing calibration verification (CCV) associated with batch 752-3101 recovered above the upper control limit for 1,1,1-Trichloroethane, 1,2-Dichloroethane and Carbon tetrachloride. The samples associated with this CCV were non-detects for the affected analytes; therefore, the data have been reported. The associated sample is impacted: (CCVIS 752-3101/3). Method 8260D: The continuing calibration verification (CCV) associated with batch 752-3101 recovered outside acceptance criteria, low biased, for Dibromofluoromethane (Surr), Toluene-d8 (Surr) and Vinyl chloride. A reporting limit (RL) standard was analyzed, and the target analytes are detected. Since the associated samples were non-detect for the analyte(s), the data are reported. Method 8260D: The CCV for analytical batch 752-3113 recovered outside control limits for the following analyte(s): 2-Hexanone, Acrylonitrile, Bromomethane, Chloroethane, Chloromethane and Trichlorofluoromethane. These compounds have been identified as a poor performing analytes when analyzed using this method; therefore, re-extraction/re-analysis was not performed. These results have been reported and qualified. Method 8260D: The continuing calibration verification (CCV) associated with batch 752-3113 recovered outside acceptance criteria, low biased, for Dibromofluoromethane (Surr), Toluene-d8 (Surr) and Vinyl chloride. A reporting limit (RL) standard was analyzed, and the target analytes are detected. Since the associated samples were non-detect for the analyte(s), the data are reported. Method 8260D: The continuing calibration verification (CCV) associated with batch 752-3113 recovered above the upper control limit for 1,2-Dichloroethane and Carbon tetrachloride. The samples associated with this CCV were non-detects for the affected analytes; therefore, the data have been reported. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. GC/MS Semi VOA Method 8270E: The continuing calibration verification (CCV) analyzed in batch 680-780901 was outside the method criteria for the following analyte(s): Diethyl phthalate. A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analyte(s) is considered estimated. No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. Metals No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Eurofins RaleighPage 5 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Case Narrative Client: WSP USA Inc Job ID: 752-7507-1 Project/Site: Randolph County Landfill Job ID: 752-7507-1 (Continued) Laboratory: Eurofins Raleigh (Continued) Organic Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. VOA Prep No analytical or quality issues were noted, other than those described in the Definitions/Glossary page. Eurofins RaleighPage 6 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Client Sample ID: 7601-MW10S Lab Sample ID: 752-7507-1 1,4-Dioxane RL 0.500 ug/L MDL 0.320 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA124.4 8260 SIM 1,1-Dichloroethane 1.00 ug/L0.130 Total/NA138.3 8260D 1,2-Dichloroethane 1.00 ug/L0.210 Total/NA10.422 J 8260D Benzene 1.00 ug/L0.150 Total/NA10.840 J 8260D Chloroethane 1.00 ug/L0.230 Total/NA10.879 J 8260D cis-1,2-Dichloroethene 1.00 ug/L0.150 Total/NA17.63 8260D Dichlorodifluoromethane 1.00 ug/L0.200 Total/NA11.18 8260D Methylene Chloride 1.00 ug/L0.230 Total/NA10.241 J 8260D Tetrachloroethene 1.00 ug/L0.170 Total/NA12.54 8260D Trichloroethene 1.00 ug/L0.150 Total/NA11.92 8260D Vinyl chloride 1.00 ug/L0.320 Total/NA10.665 J 8260D Barium 10.0 ug/L4.40 Total Recoverable 14.73 J 6010D Nickel 40.0 ug/L3.30 Total Recoverable 13.84 J 6010D Zinc 20.0 ug/L8.70 Total Recoverable 19.90 J 6010D Client Sample ID: 7601-MW6 Lab Sample ID: 752-7507-2 1,4-Dioxane RL 0.500 ug/L MDL 0.320 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA19.11 8260 SIM 1,1-Dichloroethane 1.00 ug/L0.130 Total/NA11.05 8260D Chloromethane 1.00 ug/L0.130 Total/NA10.147 J 8260D Barium 10.0 ug/L4.40 Total Recoverable 120.9 6010D Chromium 10.0 ug/L1.10 Total Recoverable 11.22 J 6010D Cobalt 10.0 ug/L1.40 Total Recoverable 11.56 J 6010D Copper 20.0 ug/L3.20 Total Recoverable 17.98 J 6010D Nickel 40.0 ug/L3.30 Total Recoverable 15.10 J 6010D Vanadium 10.0 ug/L1.00 Total Recoverable 13.28 J 6010D Client Sample ID: 7601-MW7 Lab Sample ID: 752-7507-3 1,4-Dioxane RL 0.500 ug/L MDL 0.320 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA11.47 8260 SIM 1,1-Dichloroethane 1.00 ug/L0.130 Total/NA10.359 J 8260D Benzene 1.00 ug/L0.150 Total/NA10.507 J 8260D Chlorobenzene 1.00 ug/L0.170 Total/NA11.07 8260D Chloroethane 1.00 ug/L0.230 Total/NA10.791 J 8260D cis-1,2-Dichloroethene 1.00 ug/L0.150 Total/NA10.317 J 8260D Cadmium 5.00 ug/L0.440 Total Recoverable 10.500 J 6010D Cobalt 10.0 ug/L1.40 Total Recoverable 110.9 6010D Client Sample ID: 7601-MW8 Lab Sample ID: 752-7507-4 1,4-Dioxane RL 0.500 ug/L MDL 0.320 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA10.565 8260 SIM Eurofins Raleigh This Detection Summary does not include radiochemical test results. Page 7 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Client Sample ID: 7601-MW8 (Continued)Lab Sample ID: 752-7507-4 1,1-Dichloroethane RL 1.00 ug/L MDL 0.130 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA12.61 8260D Chloroform 1.00 ug/L0.180 Total/NA10.181 J 8260D cis-1,2-Dichloroethene 1.00 ug/L0.150 Total/NA10.610 J 8260D Tetrachloroethene 1.00 ug/L0.170 Total/NA10.445 J 8260D Client Sample ID: 7601-MW9 Lab Sample ID: 752-7507-5 1,4-Dioxane RL 0.500 ug/L MDL 0.320 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA10.888 8260 SIM 1,1-Dichloroethane 1.00 ug/L0.130 Total/NA10.480 J 8260D cis-1,2-Dichloroethene 1.00 ug/L0.150 Total/NA10.278 J 8260D Barium 10.0 ug/L4.40 Total Recoverable 17.90 J 6010D Vanadium 10.0 ug/L1.00 Total Recoverable 11.83 J 6010D Client Sample ID: 7601-SW1 Lab Sample ID: 752-7507-6 1,4-Dioxane RL 0.500 ug/L MDL 0.320 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA11.23 8260 SIM Barium 10.0 ug/L4.40 Total Recoverable 145.5 6010D Cobalt 10.0 ug/L1.40 Total Recoverable 13.88 J 6010D Vanadium 10.0 ug/L1.00 Total Recoverable 15.09 J 6010D Client Sample ID: 7601-SW2 Lab Sample ID: 752-7507-7 1,4-Dioxane RL 0.500 ug/L MDL 0.320 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA119.4 8260 SIM Barium 10.0 ug/L4.40 Total Recoverable 132.8 6010D Client Sample ID: 7601-SW3 Lab Sample ID: 752-7507-8 1,4-Dioxane RL 0.500 ug/L MDL 0.320 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA14.58 8260 SIM Chloroform 1.00 ug/L0.180 Total/NA10.725 J 8260D Barium 10.0 ug/L4.40 Total Recoverable 120.8 6010D Vanadium 10.0 ug/L1.00 Total Recoverable 11.73 J 6010D Client Sample ID: 7601-SW4 Lab Sample ID: 752-7507-9 1,4-Dioxane RL 0.500 ug/L MDL 0.320 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA14.05 8260 SIM Bromodichloromethane 1.00 ug/L0.170 Total/NA10.287 J 8260D Chloroform 1.00 ug/L0.180 Total/NA10.733 J 8260D Barium 10.0 ug/L4.40 Total Recoverable 119.1 6010D Vanadium 10.0 ug/L1.00 Total Recoverable 11.59 J 6010D Eurofins Raleigh This Detection Summary does not include radiochemical test results. Page 8 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Detection Summary Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Client Sample ID: 7601-Trip Blank Lab Sample ID: 752-7507-10 Chloroform RL 1.00 ug/L MDL 0.180 Analyte Result Qualifier Unit Dil Fac D Method Prep Type Total/NA1J0.205 8260D Eurofins Raleigh This Detection Summary does not include radiochemical test results. Page 9 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-1Client Sample ID: 7601-MW10S Matrix: WaterDate Collected: 05/22/23 14:45 Date Received: 05/25/23 10:00 Method: SW846 8260 SIM - 1,4-Dioxane by SIM RL MDL 24.4 0.500 0.320 ug/L 05/31/23 14:26 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,4-Dioxane 4-Bromofluorobenzene (Surr)100 70-130 05/31/23 14:26 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Method: SW846 8260D - Volatile Organic Compounds by GC/MS RL MDL <0.170 1.00 0.170 ug/L 06/02/23 19:51 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.120 ug/L 06/02/23 19:51 1<0.1201,1,1-Trichloroethane 1.00 0.280 ug/L 06/02/23 19:51 1<0.2801,1,2,2-Tetrachloroethane 1.00 0.140 ug/L 06/02/23 19:51 1<0.1401,1,2-Trichloroethane 1.00 0.130 ug/L 06/02/23 19:51 138.31,1-Dichloroethane 1.00 0.210 ug/L 06/02/23 19:51 1<0.2101,1-Dichloroethene 1.00 0.490 ug/L 06/02/23 19:51 1<0.4901,2,3-Trichloropropane 1.00 0.480 ug/L 06/02/23 19:51 1<0.4801,2-Dibromo-3-Chloropropane 1.00 0.660 ug/L 06/02/23 19:51 1<0.6601,2-Dibromoethane 1.00 0.190 ug/L 06/02/23 19:51 1<0.1901,2-Dichlorobenzene 1.00 0.210 ug/L 06/02/23 19:51 10.422 J1,2-Dichloroethane 1.00 0.100 ug/L 06/02/23 19:51 1<0.1001,2-Dichloropropane 1.00 0.190 ug/L 06/02/23 19:51 1<0.1901,4-Dichlorobenzene 20.0 10.0 ug/L 06/02/23 19:51 1<10.02-Butanone (MEK) 5.00 0.880 ug/L 06/02/23 19:51 1<0.8802-Hexanone 5.00 1.10 ug/L 06/02/23 19:51 1<1.104-Methyl-2-pentanone (MIBK) 20.0 10.0 ug/L 06/02/23 19:51 1<10.0Acetone 10.0 3.50 ug/L 06/02/23 19:51 1<3.50Acrylonitrile 1.00 0.150 ug/L 06/02/23 19:51 10.840 JBenzene 1.00 0.480 ug/L 06/02/23 19:51 1<0.480Bromochloromethane 1.00 0.170 ug/L 06/02/23 19:51 1<0.170Bromodichloromethane 1.00 0.220 ug/L 06/02/23 19:51 1<0.220Bromoform 1.00 0.140 ug/L 06/02/23 19:51 1<0.140Bromomethane 5.00 1.50 ug/L 06/02/23 19:51 1<1.50Carbon disulfide 1.00 0.170 ug/L 06/02/23 19:51 1<0.170Carbon tetrachloride 1.00 0.170 ug/L 06/02/23 19:51 1<0.170Chlorobenzene 1.00 0.230 ug/L 06/02/23 19:51 10.879 JChloroethane 1.00 0.180 ug/L 06/02/23 19:51 1<0.180Chloroform 1.00 0.130 ug/L 06/02/23 19:51 1<0.130Chloromethane 1.00 0.150 ug/L 06/02/23 19:51 17.63cis-1,2-Dichloroethene 1.00 0.200 ug/L 06/02/23 19:51 1<0.200cis-1,3-Dichloropropene 1.00 0.170 ug/L 06/02/23 19:51 1<0.170Dibromochloromethane 1.00 0.270 ug/L 06/02/23 19:51 1<0.270Dibromomethane 1.00 0.200 ug/L 06/02/23 19:51 11.18Dichlorodifluoromethane 1.00 0.130 ug/L 06/02/23 19:51 1<0.130Ethylbenzene 5.00 1.70 ug/L 06/02/23 19:51 1<1.70Iodomethane 1.00 0.230 ug/L 06/02/23 19:51 10.241 JMethylene Chloride 1.00 0.110 ug/L 06/02/23 19:51 1<0.110Styrene 1.00 0.170 ug/L 06/02/23 19:51 12.54Tetrachloroethene 1.00 0.140 ug/L 06/02/23 19:51 1<0.140Toluene 1.00 0.210 ug/L 06/02/23 19:51 1<0.210trans-1,2-Dichloroethene 1.00 0.150 ug/L 06/02/23 19:51 1<0.150trans-1,3-Dichloropropene 1.00 0.700 ug/L 06/02/23 19:51 1<0.700trans-1,4-Dichloro-2-butene Eurofins Raleigh Page 10 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-1Client Sample ID: 7601-MW10S Matrix: WaterDate Collected: 05/22/23 14:45 Date Received: 05/25/23 10:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL 1.92 1.00 0.150 ug/L 06/02/23 19:51 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Trichloroethene 1.00 0.240 ug/L 06/02/23 19:51 1<0.240Trichlorofluoromethane 5.00 0.950 ug/L 06/02/23 19:51 1<0.950Vinyl acetate 1.00 0.320 ug/L 06/02/23 19:51 10.665 JVinyl chloride 3.00 0.450 ug/L 06/02/23 19:51 1<0.450Xylenes, Total 4-Bromofluorobenzene (Surr)93 53-136 06/02/23 19:51 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)90 06/02/23 19:51 167-129 Toluene-d8 (Surr)79 06/02/23 19:51 159-134 Method: SW846 8270E - Semivolatile Organic Compounds (GC/MS) RL MDL <2.10 9.55 2.10 ug/L 05/27/23 12:41 05/29/23 22:19 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Diethyl phthalate 2,4,6-Tribromophenol (Surr)60 30-130 05/27/23 12:41 05/29/23 22:19 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 2-Fluorobiphenyl 68 05/27/23 12:41 05/29/23 22:19 125-130 2-Fluorophenol (Surr)31 05/27/23 12:41 05/29/23 22:19 110-130 Nitrobenzene-d5 (Surr)68 05/27/23 12:41 05/29/23 22:19 130-130 Phenol-d5 (Surr)20 05/27/23 12:41 05/29/23 22:19 110-130 Terphenyl-d14 (Surr)74 05/27/23 12:41 05/29/23 22:19 135-131 Method: SW846 6010D - Metals (ICP) - Total Recoverable RL MDL <6.40 20.0 6.40 ug/L 05/30/23 06:22 05/30/23 15:44 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Arsenic 10.0 4.40 ug/L 05/30/23 06:22 05/30/23 15:44 14.73 JBarium 4.00 0.300 ug/L 05/30/23 06:22 05/30/23 15:44 1<0.300Beryllium 5.00 0.440 ug/L 05/30/23 06:22 05/30/23 15:44 1<0.440Cadmium 10.0 1.10 ug/L 05/30/23 06:22 05/30/23 15:44 1<1.10Chromium 10.0 1.40 ug/L 05/30/23 06:22 05/30/23 15:44 1<1.40Cobalt 20.0 3.20 ug/L 05/30/23 06:22 05/30/23 15:44 1<3.20Copper 10.0 6.60 ug/L 05/30/23 06:22 05/30/23 15:44 1<6.60Lead 40.0 3.30 ug/L 05/30/23 06:22 05/30/23 15:44 13.84 JNickel 20.0 10.0 ug/L 05/30/23 06:22 05/30/23 15:44 1<10.0Selenium 10.0 1.50 ug/L 05/30/23 06:22 05/30/23 15:44 1<1.50Silver 10.0 1.00 ug/L 05/30/23 06:22 05/30/23 15:44 1<1.00Vanadium 20.0 8.70 ug/L 05/30/23 06:22 05/30/23 15:44 19.90 JZinc Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable RL MDL <0.340 5.00 0.340 ug/L 05/30/23 06:22 05/30/23 23:06 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Antimony 1.00 0.260 ug/L 05/30/23 06:22 05/30/23 23:06 1<0.260Thallium Method: SW846 7470A - Mercury (CVAA) RL MDL <0.0800 0.200 0.0800 ug/L 05/30/23 10:34 05/31/23 09:43 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Mercury Eurofins Raleigh Page 11 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-2Client Sample ID: 7601-MW6 Matrix: WaterDate Collected: 05/23/23 11:15 Date Received: 05/25/23 10:00 Method: SW846 8260 SIM - 1,4-Dioxane by SIM RL MDL 9.11 0.500 0.320 ug/L 06/01/23 15:40 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,4-Dioxane 4-Bromofluorobenzene (Surr)107 70-130 06/01/23 15:40 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Method: SW846 8260D - Volatile Organic Compounds by GC/MS RL MDL <0.170 1.00 0.170 ug/L 06/03/23 06:11 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.120 ug/L 06/03/23 06:11 1<0.1201,1,1-Trichloroethane 1.00 0.280 ug/L 06/03/23 06:11 1<0.2801,1,2,2-Tetrachloroethane 1.00 0.140 ug/L 06/03/23 06:11 1<0.1401,1,2-Trichloroethane 1.00 0.130 ug/L 06/03/23 06:11 11.051,1-Dichloroethane 1.00 0.210 ug/L 06/03/23 06:11 1<0.2101,1-Dichloroethene 1.00 0.490 ug/L 06/03/23 06:11 1<0.4901,2,3-Trichloropropane 1.00 0.480 ug/L 06/03/23 06:11 1<0.4801,2-Dibromo-3-Chloropropane 1.00 0.660 ug/L 06/03/23 06:11 1<0.6601,2-Dibromoethane 1.00 0.190 ug/L 06/03/23 06:11 1<0.1901,2-Dichlorobenzene 1.00 0.210 ug/L 06/03/23 06:11 1<0.2101,2-Dichloroethane 1.00 0.100 ug/L 06/03/23 06:11 1<0.1001,2-Dichloropropane 1.00 0.190 ug/L 06/03/23 06:11 1<0.1901,4-Dichlorobenzene 20.0 10.0 ug/L 06/03/23 06:11 1<10.02-Butanone (MEK) 5.00 0.880 ug/L 06/03/23 06:11 1<0.8802-Hexanone 5.00 1.10 ug/L 06/03/23 06:11 1<1.104-Methyl-2-pentanone (MIBK) 20.0 10.0 ug/L 06/03/23 06:11 1<10.0Acetone 10.0 3.50 ug/L 06/03/23 06:11 1<3.50Acrylonitrile 1.00 0.150 ug/L 06/03/23 06:11 1<0.150Benzene 1.00 0.480 ug/L 06/03/23 06:11 1<0.480Bromochloromethane 1.00 0.170 ug/L 06/03/23 06:11 1<0.170Bromodichloromethane 1.00 0.220 ug/L 06/03/23 06:11 1<0.220Bromoform 1.00 0.140 ug/L 06/03/23 06:11 1<0.140Bromomethane 5.00 1.50 ug/L 06/03/23 06:11 1<1.50Carbon disulfide 1.00 0.170 ug/L 06/03/23 06:11 1<0.170Carbon tetrachloride 1.00 0.170 ug/L 06/03/23 06:11 1<0.170Chlorobenzene 1.00 0.230 ug/L 06/03/23 06:11 1<0.230Chloroethane 1.00 0.180 ug/L 06/03/23 06:11 1<0.180Chloroform 1.00 0.130 ug/L 06/03/23 06:11 10.147 JChloromethane 1.00 0.150 ug/L 06/03/23 06:11 1<0.150cis-1,2-Dichloroethene 1.00 0.200 ug/L 06/03/23 06:11 1<0.200cis-1,3-Dichloropropene 1.00 0.170 ug/L 06/03/23 06:11 1<0.170Dibromochloromethane 1.00 0.270 ug/L 06/03/23 06:11 1<0.270Dibromomethane 1.00 0.200 ug/L 06/03/23 06:11 1<0.200Dichlorodifluoromethane 1.00 0.130 ug/L 06/03/23 06:11 1<0.130Ethylbenzene 5.00 1.70 ug/L 06/03/23 06:11 1<1.70Iodomethane 1.00 0.230 ug/L 06/03/23 06:11 1<0.230Methylene Chloride 1.00 0.110 ug/L 06/03/23 06:11 1<0.110Styrene 1.00 0.170 ug/L 06/03/23 06:11 1<0.170Tetrachloroethene 1.00 0.140 ug/L 06/03/23 06:11 1<0.140Toluene 1.00 0.210 ug/L 06/03/23 06:11 1<0.210trans-1,2-Dichloroethene 1.00 0.150 ug/L 06/03/23 06:11 1<0.150trans-1,3-Dichloropropene 1.00 0.700 ug/L 06/03/23 06:11 1<0.700trans-1,4-Dichloro-2-butene Eurofins Raleigh Page 12 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-2Client Sample ID: 7601-MW6 Matrix: WaterDate Collected: 05/23/23 11:15 Date Received: 05/25/23 10:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL <0.150 1.00 0.150 ug/L 06/03/23 06:11 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Trichloroethene 1.00 0.240 ug/L 06/03/23 06:11 1<0.240Trichlorofluoromethane 5.00 0.950 ug/L 06/03/23 06:11 1<0.950Vinyl acetate 1.00 0.320 ug/L 06/03/23 06:11 1<0.320Vinyl chloride 3.00 0.450 ug/L 06/03/23 06:11 1<0.450Xylenes, Total 4-Bromofluorobenzene (Surr)90 53-136 06/03/23 06:11 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)81 06/03/23 06:11 167-129 Toluene-d8 (Surr)75 06/03/23 06:11 159-134 Method: SW846 8270E - Semivolatile Organic Compounds (GC/MS) RL MDL <2.12 9.65 2.12 ug/L 05/27/23 12:41 05/29/23 22:40 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Diethyl phthalate 2,4,6-Tribromophenol (Surr)57 30-130 05/27/23 12:41 05/29/23 22:40 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 2-Fluorobiphenyl 61 05/27/23 12:41 05/29/23 22:40 125-130 2-Fluorophenol (Surr)29 05/27/23 12:41 05/29/23 22:40 110-130 Nitrobenzene-d5 (Surr)65 05/27/23 12:41 05/29/23 22:40 130-130 Phenol-d5 (Surr)20 05/27/23 12:41 05/29/23 22:40 110-130 Terphenyl-d14 (Surr)61 05/27/23 12:41 05/29/23 22:40 135-131 Method: SW846 6010D - Metals (ICP) - Total Recoverable RL MDL <6.40 20.0 6.40 ug/L 05/30/23 06:22 05/30/23 15:48 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Arsenic 10.0 4.40 ug/L 05/30/23 06:22 05/30/23 15:48 120.9Barium 4.00 0.300 ug/L 05/30/23 06:22 05/30/23 15:48 1<0.300Beryllium 5.00 0.440 ug/L 05/30/23 06:22 05/30/23 15:48 1<0.440Cadmium 10.0 1.10 ug/L 05/30/23 06:22 05/30/23 15:48 11.22 JChromium 10.0 1.40 ug/L 05/30/23 06:22 05/30/23 15:48 11.56 JCobalt 20.0 3.20 ug/L 05/30/23 06:22 05/30/23 15:48 17.98 JCopper 10.0 6.60 ug/L 05/30/23 06:22 05/30/23 15:48 1<6.60Lead 40.0 3.30 ug/L 05/30/23 06:22 05/30/23 15:48 15.10 JNickel 20.0 10.0 ug/L 05/30/23 06:22 05/30/23 15:48 1<10.0Selenium 10.0 1.50 ug/L 05/30/23 06:22 05/30/23 15:48 1<1.50Silver 10.0 1.00 ug/L 05/30/23 06:22 05/30/23 15:48 13.28 JVanadium 20.0 8.70 ug/L 05/30/23 06:22 05/30/23 15:48 1<8.70Zinc Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable RL MDL <0.340 5.00 0.340 ug/L 05/30/23 06:22 05/30/23 23:10 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Antimony 1.00 0.260 ug/L 05/30/23 06:22 05/30/23 23:10 1<0.260Thallium Method: SW846 7470A - Mercury (CVAA) RL MDL <0.0800 0.200 0.0800 ug/L 05/30/23 10:34 05/31/23 09:44 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Mercury Eurofins Raleigh Page 13 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-3Client Sample ID: 7601-MW7 Matrix: WaterDate Collected: 05/22/23 09:44 Date Received: 05/25/23 10:00 Method: SW846 8260 SIM - 1,4-Dioxane by SIM RL MDL 1.47 0.500 0.320 ug/L 05/31/23 15:36 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,4-Dioxane 4-Bromofluorobenzene (Surr)82 70-130 05/31/23 15:36 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Method: SW846 8260D - Volatile Organic Compounds by GC/MS RL MDL <0.170 1.00 0.170 ug/L 06/02/23 20:21 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.120 ug/L 06/02/23 20:21 1<0.1201,1,1-Trichloroethane 1.00 0.280 ug/L 06/02/23 20:21 1<0.2801,1,2,2-Tetrachloroethane 1.00 0.140 ug/L 06/02/23 20:21 1<0.1401,1,2-Trichloroethane 1.00 0.130 ug/L 06/02/23 20:21 10.359 J1,1-Dichloroethane 1.00 0.210 ug/L 06/02/23 20:21 1<0.2101,1-Dichloroethene 1.00 0.490 ug/L 06/02/23 20:21 1<0.4901,2,3-Trichloropropane 1.00 0.480 ug/L 06/02/23 20:21 1<0.4801,2-Dibromo-3-Chloropropane 1.00 0.660 ug/L 06/02/23 20:21 1<0.6601,2-Dibromoethane 1.00 0.190 ug/L 06/02/23 20:21 1<0.1901,2-Dichlorobenzene 1.00 0.210 ug/L 06/02/23 20:21 1<0.2101,2-Dichloroethane 1.00 0.100 ug/L 06/02/23 20:21 1<0.1001,2-Dichloropropane 1.00 0.190 ug/L 06/02/23 20:21 1<0.1901,4-Dichlorobenzene 20.0 10.0 ug/L 06/02/23 20:21 1<10.02-Butanone (MEK) 5.00 0.880 ug/L 06/02/23 20:21 1<0.8802-Hexanone 5.00 1.10 ug/L 06/02/23 20:21 1<1.104-Methyl-2-pentanone (MIBK) 20.0 10.0 ug/L 06/02/23 20:21 1<10.0Acetone 10.0 3.50 ug/L 06/02/23 20:21 1<3.50Acrylonitrile 1.00 0.150 ug/L 06/02/23 20:21 10.507 JBenzene 1.00 0.480 ug/L 06/02/23 20:21 1<0.480Bromochloromethane 1.00 0.170 ug/L 06/02/23 20:21 1<0.170Bromodichloromethane 1.00 0.220 ug/L 06/02/23 20:21 1<0.220Bromoform 1.00 0.140 ug/L 06/02/23 20:21 1<0.140Bromomethane 5.00 1.50 ug/L 06/02/23 20:21 1<1.50Carbon disulfide 1.00 0.170 ug/L 06/02/23 20:21 1<0.170 F1Carbon tetrachloride 1.00 0.170 ug/L 06/02/23 20:21 11.07Chlorobenzene 1.00 0.230 ug/L 06/02/23 20:21 10.791 JChloroethane 1.00 0.180 ug/L 06/02/23 20:21 1<0.180Chloroform 1.00 0.130 ug/L 06/02/23 20:21 1<0.130Chloromethane 1.00 0.150 ug/L 06/02/23 20:21 10.317 Jcis-1,2-Dichloroethene 1.00 0.200 ug/L 06/02/23 20:21 1<0.200cis-1,3-Dichloropropene 1.00 0.170 ug/L 06/02/23 20:21 1<0.170Dibromochloromethane 1.00 0.270 ug/L 06/02/23 20:21 1<0.270Dibromomethane 1.00 0.200 ug/L 06/02/23 20:21 1<0.200Dichlorodifluoromethane 1.00 0.130 ug/L 06/02/23 20:21 1<0.130Ethylbenzene 5.00 1.70 ug/L 06/02/23 20:21 1<1.70Iodomethane 1.00 0.230 ug/L 06/02/23 20:21 1<0.230Methylene Chloride 1.00 0.110 ug/L 06/02/23 20:21 1<0.110Styrene 1.00 0.170 ug/L 06/02/23 20:21 1<0.170Tetrachloroethene 1.00 0.140 ug/L 06/02/23 20:21 1<0.140Toluene 1.00 0.210 ug/L 06/02/23 20:21 1<0.210trans-1,2-Dichloroethene 1.00 0.150 ug/L 06/02/23 20:21 1<0.150trans-1,3-Dichloropropene 1.00 0.700 ug/L 06/02/23 20:21 1<0.700trans-1,4-Dichloro-2-butene Eurofins Raleigh Page 14 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-3Client Sample ID: 7601-MW7 Matrix: WaterDate Collected: 05/22/23 09:44 Date Received: 05/25/23 10:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL <0.150 1.00 0.150 ug/L 06/02/23 20:21 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Trichloroethene 1.00 0.240 ug/L 06/02/23 20:21 1<0.240Trichlorofluoromethane 5.00 0.950 ug/L 06/02/23 20:21 1<0.950Vinyl acetate 1.00 0.320 ug/L 06/02/23 20:21 1<0.320Vinyl chloride 3.00 0.450 ug/L 06/02/23 20:21 1<0.450Xylenes, Total 4-Bromofluorobenzene (Surr)89 53-136 06/02/23 20:21 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)90 06/02/23 20:21 167-129 Toluene-d8 (Surr)80 06/02/23 20:21 159-134 Method: SW846 8270E - Semivolatile Organic Compounds (GC/MS) RL MDL <2.20 9.99 2.20 ug/L 05/27/23 12:41 05/29/23 19:46 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Diethyl phthalate 2,4,6-Tribromophenol (Surr)62 30-130 05/27/23 12:41 05/29/23 19:46 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 2-Fluorobiphenyl 59 05/27/23 12:41 05/29/23 19:46 125-130 2-Fluorophenol (Surr)38 05/27/23 12:41 05/29/23 19:46 110-130 Nitrobenzene-d5 (Surr)73 05/27/23 12:41 05/29/23 19:46 130-130 Phenol-d5 (Surr)26 05/27/23 12:41 05/29/23 19:46 110-130 Terphenyl-d14 (Surr)73 05/27/23 12:41 05/29/23 19:46 135-131 Method: SW846 6010D - Metals (ICP) - Total Recoverable RL MDL <6.40 20.0 6.40 ug/L 05/30/23 06:51 05/30/23 14:34 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Arsenic 10.0 4.40 ug/L 05/30/23 06:51 05/30/23 14:34 1<4.40Barium 4.00 0.300 ug/L 05/30/23 06:51 05/30/23 14:34 1<0.300Beryllium 5.00 0.440 ug/L 05/30/23 06:51 05/30/23 14:34 10.500 JCadmium 10.0 1.10 ug/L 05/30/23 06:51 05/30/23 14:34 1<1.10Chromium 10.0 1.40 ug/L 05/30/23 06:51 05/30/23 14:34 110.9Cobalt 20.0 3.20 ug/L 05/30/23 06:51 05/30/23 14:34 1<3.20Copper 10.0 6.60 ug/L 05/30/23 06:51 05/30/23 14:34 1<6.60Lead 40.0 3.30 ug/L 05/30/23 06:51 05/30/23 14:34 1<3.30Nickel 20.0 10.0 ug/L 05/30/23 06:51 05/30/23 14:34 1<10.0Selenium 10.0 1.50 ug/L 05/30/23 06:51 05/30/23 14:34 1<1.50Silver 10.0 1.00 ug/L 05/30/23 06:51 05/30/23 14:34 1<1.00Vanadium 20.0 8.70 ug/L 05/30/23 06:51 05/30/23 14:34 1<8.70Zinc Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable RL MDL <0.340 5.00 0.340 ug/L 05/30/23 06:51 05/30/23 20:32 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Antimony 1.00 0.260 ug/L 05/30/23 06:51 05/30/23 20:32 1<0.260Thallium Method: SW846 7470A - Mercury (CVAA) RL MDL <0.0800 F1 0.200 0.0800 ug/L 05/30/23 10:34 05/31/23 09:46 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Mercury Eurofins Raleigh Page 15 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-4Client Sample ID: 7601-MW8 Matrix: WaterDate Collected: 05/23/23 10:50 Date Received: 05/25/23 10:00 Method: SW846 8260 SIM - 1,4-Dioxane by SIM RL MDL 0.565 0.500 0.320 ug/L 05/31/23 16:02 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,4-Dioxane 4-Bromofluorobenzene (Surr)99 70-130 05/31/23 16:02 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Method: SW846 8260D - Volatile Organic Compounds by GC/MS RL MDL <0.170 1.00 0.170 ug/L 06/03/23 06:40 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.120 ug/L 06/03/23 06:40 1<0.1201,1,1-Trichloroethane 1.00 0.280 ug/L 06/03/23 06:40 1<0.2801,1,2,2-Tetrachloroethane 1.00 0.140 ug/L 06/03/23 06:40 1<0.1401,1,2-Trichloroethane 1.00 0.130 ug/L 06/03/23 06:40 12.611,1-Dichloroethane 1.00 0.210 ug/L 06/03/23 06:40 1<0.2101,1-Dichloroethene 1.00 0.490 ug/L 06/03/23 06:40 1<0.4901,2,3-Trichloropropane 1.00 0.480 ug/L 06/03/23 06:40 1<0.4801,2-Dibromo-3-Chloropropane 1.00 0.660 ug/L 06/03/23 06:40 1<0.6601,2-Dibromoethane 1.00 0.190 ug/L 06/03/23 06:40 1<0.1901,2-Dichlorobenzene 1.00 0.210 ug/L 06/03/23 06:40 1<0.2101,2-Dichloroethane 1.00 0.100 ug/L 06/03/23 06:40 1<0.1001,2-Dichloropropane 1.00 0.190 ug/L 06/03/23 06:40 1<0.1901,4-Dichlorobenzene 20.0 10.0 ug/L 06/03/23 06:40 1<10.02-Butanone (MEK) 5.00 0.880 ug/L 06/03/23 06:40 1<0.8802-Hexanone 5.00 1.10 ug/L 06/03/23 06:40 1<1.104-Methyl-2-pentanone (MIBK) 20.0 10.0 ug/L 06/03/23 06:40 1<10.0Acetone 10.0 3.50 ug/L 06/03/23 06:40 1<3.50Acrylonitrile 1.00 0.150 ug/L 06/03/23 06:40 1<0.150Benzene 1.00 0.480 ug/L 06/03/23 06:40 1<0.480Bromochloromethane 1.00 0.170 ug/L 06/03/23 06:40 1<0.170Bromodichloromethane 1.00 0.220 ug/L 06/03/23 06:40 1<0.220Bromoform 1.00 0.140 ug/L 06/03/23 06:40 1<0.140Bromomethane 5.00 1.50 ug/L 06/03/23 06:40 1<1.50Carbon disulfide 1.00 0.170 ug/L 06/03/23 06:40 1<0.170Carbon tetrachloride 1.00 0.170 ug/L 06/03/23 06:40 1<0.170Chlorobenzene 1.00 0.230 ug/L 06/03/23 06:40 1<0.230Chloroethane 1.00 0.180 ug/L 06/03/23 06:40 10.181 JChloroform 1.00 0.130 ug/L 06/03/23 06:40 1<0.130Chloromethane 1.00 0.150 ug/L 06/03/23 06:40 10.610 Jcis-1,2-Dichloroethene 1.00 0.200 ug/L 06/03/23 06:40 1<0.200cis-1,3-Dichloropropene 1.00 0.170 ug/L 06/03/23 06:40 1<0.170Dibromochloromethane 1.00 0.270 ug/L 06/03/23 06:40 1<0.270Dibromomethane 1.00 0.200 ug/L 06/03/23 06:40 1<0.200Dichlorodifluoromethane 1.00 0.130 ug/L 06/03/23 06:40 1<0.130Ethylbenzene 5.00 1.70 ug/L 06/03/23 06:40 1<1.70Iodomethane 1.00 0.230 ug/L 06/03/23 06:40 1<0.230Methylene Chloride 1.00 0.110 ug/L 06/03/23 06:40 1<0.110Styrene 1.00 0.170 ug/L 06/03/23 06:40 10.445 JTetrachloroethene 1.00 0.140 ug/L 06/03/23 06:40 1<0.140Toluene 1.00 0.210 ug/L 06/03/23 06:40 1<0.210trans-1,2-Dichloroethene 1.00 0.150 ug/L 06/03/23 06:40 1<0.150trans-1,3-Dichloropropene 1.00 0.700 ug/L 06/03/23 06:40 1<0.700trans-1,4-Dichloro-2-butene Eurofins Raleigh Page 16 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-4Client Sample ID: 7601-MW8 Matrix: WaterDate Collected: 05/23/23 10:50 Date Received: 05/25/23 10:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL <0.150 1.00 0.150 ug/L 06/03/23 06:40 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Trichloroethene 1.00 0.240 ug/L 06/03/23 06:40 1<0.240Trichlorofluoromethane 5.00 0.950 ug/L 06/03/23 06:40 1<0.950Vinyl acetate 1.00 0.320 ug/L 06/03/23 06:40 1<0.320Vinyl chloride 3.00 0.450 ug/L 06/03/23 06:40 1<0.450Xylenes, Total 4-Bromofluorobenzene (Surr)91 53-136 06/03/23 06:40 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)86 06/03/23 06:40 167-129 Toluene-d8 (Surr)78 06/03/23 06:40 159-134 Method: SW846 8270E - Semivolatile Organic Compounds (GC/MS) RL MDL <2.03 9.24 2.03 ug/L 05/27/23 12:41 05/29/23 23:02 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Diethyl phthalate 2,4,6-Tribromophenol (Surr)62 30-130 05/27/23 12:41 05/29/23 23:02 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 2-Fluorobiphenyl 61 05/27/23 12:41 05/29/23 23:02 125-130 2-Fluorophenol (Surr)31 05/27/23 12:41 05/29/23 23:02 110-130 Nitrobenzene-d5 (Surr)69 05/27/23 12:41 05/29/23 23:02 130-130 Phenol-d5 (Surr)20 05/27/23 12:41 05/29/23 23:02 110-130 Terphenyl-d14 (Surr)70 05/27/23 12:41 05/29/23 23:02 135-131 Method: SW846 6010D - Metals (ICP) - Total Recoverable RL MDL <6.40 20.0 6.40 ug/L 05/30/23 06:51 05/30/23 14:44 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Arsenic 10.0 4.40 ug/L 05/30/23 06:51 05/30/23 14:44 1<4.40Barium 4.00 0.300 ug/L 05/30/23 06:51 05/30/23 14:44 1<0.300Beryllium 5.00 0.440 ug/L 05/30/23 06:51 05/30/23 14:44 1<0.440Cadmium 10.0 1.10 ug/L 05/30/23 06:51 05/30/23 14:44 1<1.10Chromium 10.0 1.40 ug/L 05/30/23 06:51 05/30/23 14:44 1<1.40Cobalt 20.0 3.20 ug/L 05/30/23 06:51 05/30/23 14:44 1<3.20Copper 10.0 6.60 ug/L 05/30/23 06:51 05/30/23 14:44 1<6.60Lead 40.0 3.30 ug/L 05/30/23 06:51 05/30/23 14:44 1<3.30Nickel 20.0 10.0 ug/L 05/30/23 06:51 05/30/23 14:44 1<10.0Selenium 10.0 1.50 ug/L 05/30/23 06:51 05/30/23 14:44 1<1.50Silver 10.0 1.00 ug/L 05/30/23 06:51 05/30/23 14:44 1<1.00Vanadium 20.0 8.70 ug/L 05/30/23 06:51 05/30/23 14:44 1<8.70Zinc Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable RL MDL <0.340 5.00 0.340 ug/L 05/30/23 06:51 05/30/23 20:44 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Antimony 1.00 0.260 ug/L 05/30/23 06:51 05/30/23 20:44 1<0.260Thallium Method: SW846 7470A - Mercury (CVAA) RL MDL <0.0800 0.200 0.0800 ug/L 05/30/23 10:34 05/31/23 09:54 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Mercury Eurofins Raleigh Page 17 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-5Client Sample ID: 7601-MW9 Matrix: WaterDate Collected: 05/23/23 09:35 Date Received: 05/25/23 10:00 Method: SW846 8260 SIM - 1,4-Dioxane by SIM RL MDL 0.888 0.500 0.320 ug/L 06/01/23 16:31 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,4-Dioxane 4-Bromofluorobenzene (Surr)101 70-130 06/01/23 16:31 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Method: SW846 8260D - Volatile Organic Compounds by GC/MS RL MDL <0.170 1.00 0.170 ug/L 06/03/23 07:10 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.120 ug/L 06/03/23 07:10 1<0.1201,1,1-Trichloroethane 1.00 0.280 ug/L 06/03/23 07:10 1<0.2801,1,2,2-Tetrachloroethane 1.00 0.140 ug/L 06/03/23 07:10 1<0.1401,1,2-Trichloroethane 1.00 0.130 ug/L 06/03/23 07:10 10.480 J1,1-Dichloroethane 1.00 0.210 ug/L 06/03/23 07:10 1<0.2101,1-Dichloroethene 1.00 0.490 ug/L 06/03/23 07:10 1<0.4901,2,3-Trichloropropane 1.00 0.480 ug/L 06/03/23 07:10 1<0.4801,2-Dibromo-3-Chloropropane 1.00 0.660 ug/L 06/03/23 07:10 1<0.6601,2-Dibromoethane 1.00 0.190 ug/L 06/03/23 07:10 1<0.1901,2-Dichlorobenzene 1.00 0.210 ug/L 06/03/23 07:10 1<0.2101,2-Dichloroethane 1.00 0.100 ug/L 06/03/23 07:10 1<0.1001,2-Dichloropropane 1.00 0.190 ug/L 06/03/23 07:10 1<0.1901,4-Dichlorobenzene 20.0 10.0 ug/L 06/03/23 07:10 1<10.02-Butanone (MEK) 5.00 0.880 ug/L 06/03/23 07:10 1<0.8802-Hexanone 5.00 1.10 ug/L 06/03/23 07:10 1<1.104-Methyl-2-pentanone (MIBK) 20.0 10.0 ug/L 06/03/23 07:10 1<10.0Acetone 10.0 3.50 ug/L 06/03/23 07:10 1<3.50Acrylonitrile 1.00 0.150 ug/L 06/03/23 07:10 1<0.150Benzene 1.00 0.480 ug/L 06/03/23 07:10 1<0.480Bromochloromethane 1.00 0.170 ug/L 06/03/23 07:10 1<0.170Bromodichloromethane 1.00 0.220 ug/L 06/03/23 07:10 1<0.220Bromoform 1.00 0.140 ug/L 06/03/23 07:10 1<0.140Bromomethane 5.00 1.50 ug/L 06/03/23 07:10 1<1.50Carbon disulfide 1.00 0.170 ug/L 06/03/23 07:10 1<0.170Carbon tetrachloride 1.00 0.170 ug/L 06/03/23 07:10 1<0.170Chlorobenzene 1.00 0.230 ug/L 06/03/23 07:10 1<0.230Chloroethane 1.00 0.180 ug/L 06/03/23 07:10 1<0.180Chloroform 1.00 0.130 ug/L 06/03/23 07:10 1<0.130Chloromethane 1.00 0.150 ug/L 06/03/23 07:10 10.278 Jcis-1,2-Dichloroethene 1.00 0.200 ug/L 06/03/23 07:10 1<0.200cis-1,3-Dichloropropene 1.00 0.170 ug/L 06/03/23 07:10 1<0.170Dibromochloromethane 1.00 0.270 ug/L 06/03/23 07:10 1<0.270Dibromomethane 1.00 0.200 ug/L 06/03/23 07:10 1<0.200Dichlorodifluoromethane 1.00 0.130 ug/L 06/03/23 07:10 1<0.130Ethylbenzene 5.00 1.70 ug/L 06/03/23 07:10 1<1.70Iodomethane 1.00 0.230 ug/L 06/03/23 07:10 1<0.230Methylene Chloride 1.00 0.110 ug/L 06/03/23 07:10 1<0.110Styrene 1.00 0.170 ug/L 06/03/23 07:10 1<0.170Tetrachloroethene 1.00 0.140 ug/L 06/03/23 07:10 1<0.140Toluene 1.00 0.210 ug/L 06/03/23 07:10 1<0.210trans-1,2-Dichloroethene 1.00 0.150 ug/L 06/03/23 07:10 1<0.150trans-1,3-Dichloropropene 1.00 0.700 ug/L 06/03/23 07:10 1<0.700trans-1,4-Dichloro-2-butene Eurofins Raleigh Page 18 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-5Client Sample ID: 7601-MW9 Matrix: WaterDate Collected: 05/23/23 09:35 Date Received: 05/25/23 10:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL <0.150 1.00 0.150 ug/L 06/03/23 07:10 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Trichloroethene 1.00 0.240 ug/L 06/03/23 07:10 1<0.240Trichlorofluoromethane 5.00 0.950 ug/L 06/03/23 07:10 1<0.950Vinyl acetate 1.00 0.320 ug/L 06/03/23 07:10 1<0.320Vinyl chloride 3.00 0.450 ug/L 06/03/23 07:10 1<0.450Xylenes, Total 4-Bromofluorobenzene (Surr)90 53-136 06/03/23 07:10 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)84 06/03/23 07:10 167-129 Toluene-d8 (Surr)76 06/03/23 07:10 159-134 Method: SW846 8270E - Semivolatile Organic Compounds (GC/MS) RL MDL <2.20 10.0 2.20 ug/L 05/27/23 12:41 05/29/23 23:24 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Diethyl phthalate 2,4,6-Tribromophenol (Surr)63 30-130 05/27/23 12:41 05/29/23 23:24 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery 2-Fluorobiphenyl 63 05/27/23 12:41 05/29/23 23:24 125-130 2-Fluorophenol (Surr)33 05/27/23 12:41 05/29/23 23:24 110-130 Nitrobenzene-d5 (Surr)71 05/27/23 12:41 05/29/23 23:24 130-130 Phenol-d5 (Surr)22 05/27/23 12:41 05/29/23 23:24 110-130 Terphenyl-d14 (Surr)72 05/27/23 12:41 05/29/23 23:24 135-131 Method: SW846 6010D - Metals (ICP) - Total Recoverable RL MDL <6.40 20.0 6.40 ug/L 05/30/23 06:51 05/30/23 14:48 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Arsenic 10.0 4.40 ug/L 05/30/23 06:51 05/30/23 14:48 17.90 JBarium 4.00 0.300 ug/L 05/30/23 06:51 05/30/23 14:48 1<0.300Beryllium 5.00 0.440 ug/L 05/30/23 06:51 05/30/23 14:48 1<0.440Cadmium 10.0 1.10 ug/L 05/30/23 06:51 05/30/23 14:48 1<1.10Chromium 10.0 1.40 ug/L 05/30/23 06:51 05/30/23 14:48 1<1.40Cobalt 20.0 3.20 ug/L 05/30/23 06:51 05/30/23 14:48 1<3.20Copper 10.0 6.60 ug/L 05/30/23 06:51 05/30/23 14:48 1<6.60Lead 40.0 3.30 ug/L 05/30/23 06:51 05/30/23 14:48 1<3.30Nickel 20.0 10.0 ug/L 05/30/23 06:51 05/30/23 14:48 1<10.0Selenium 10.0 1.50 ug/L 05/30/23 06:51 05/30/23 14:48 1<1.50Silver 10.0 1.00 ug/L 05/30/23 06:51 05/30/23 14:48 11.83 JVanadium 20.0 8.70 ug/L 05/30/23 06:51 05/30/23 14:48 1<8.70Zinc Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable RL MDL <0.340 5.00 0.340 ug/L 05/30/23 06:51 05/30/23 20:48 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Antimony 1.00 0.260 ug/L 05/30/23 06:51 05/30/23 20:48 1<0.260Thallium Method: SW846 7470A - Mercury (CVAA) RL MDL <0.0800 0.200 0.0800 ug/L 05/30/23 10:34 05/31/23 09:55 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Mercury Eurofins Raleigh Page 19 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-6Client Sample ID: 7601-SW1 Matrix: WaterDate Collected: 05/23/23 10:35 Date Received: 05/25/23 10:00 Method: SW846 8260 SIM - 1,4-Dioxane by SIM RL MDL 1.23 0.500 0.320 ug/L 05/31/23 16:53 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,4-Dioxane 4-Bromofluorobenzene (Surr)93 70-130 05/31/23 16:53 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Method: SW846 8260D - Volatile Organic Compounds by GC/MS RL MDL <0.170 1.00 0.170 ug/L 06/03/23 07:39 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.120 ug/L 06/03/23 07:39 1<0.1201,1,1-Trichloroethane 1.00 0.280 ug/L 06/03/23 07:39 1<0.2801,1,2,2-Tetrachloroethane 1.00 0.140 ug/L 06/03/23 07:39 1<0.1401,1,2-Trichloroethane 1.00 0.130 ug/L 06/03/23 07:39 1<0.1301,1-Dichloroethane 1.00 0.210 ug/L 06/03/23 07:39 1<0.2101,1-Dichloroethene 1.00 0.490 ug/L 06/03/23 07:39 1<0.4901,2,3-Trichloropropane 1.00 0.480 ug/L 06/03/23 07:39 1<0.4801,2-Dibromo-3-Chloropropane 1.00 0.660 ug/L 06/03/23 07:39 1<0.6601,2-Dibromoethane 1.00 0.190 ug/L 06/03/23 07:39 1<0.1901,2-Dichlorobenzene 1.00 0.210 ug/L 06/03/23 07:39 1<0.2101,2-Dichloroethane 1.00 0.100 ug/L 06/03/23 07:39 1<0.1001,2-Dichloropropane 1.00 0.190 ug/L 06/03/23 07:39 1<0.1901,4-Dichlorobenzene 20.0 10.0 ug/L 06/03/23 07:39 1<10.02-Butanone (MEK) 5.00 0.880 ug/L 06/03/23 07:39 1<0.8802-Hexanone 5.00 1.10 ug/L 06/03/23 07:39 1<1.104-Methyl-2-pentanone (MIBK) 20.0 10.0 ug/L 06/03/23 07:39 1<10.0Acetone 10.0 3.50 ug/L 06/03/23 07:39 1<3.50Acrylonitrile 1.00 0.150 ug/L 06/03/23 07:39 1<0.150Benzene 1.00 0.480 ug/L 06/03/23 07:39 1<0.480Bromochloromethane 1.00 0.170 ug/L 06/03/23 07:39 1<0.170Bromodichloromethane 1.00 0.220 ug/L 06/03/23 07:39 1<0.220Bromoform 1.00 0.140 ug/L 06/03/23 07:39 1<0.140Bromomethane 5.00 1.50 ug/L 06/03/23 07:39 1<1.50Carbon disulfide 1.00 0.170 ug/L 06/03/23 07:39 1<0.170Carbon tetrachloride 1.00 0.170 ug/L 06/03/23 07:39 1<0.170Chlorobenzene 1.00 0.230 ug/L 06/03/23 07:39 1<0.230Chloroethane 1.00 0.180 ug/L 06/03/23 07:39 1<0.180Chloroform 1.00 0.130 ug/L 06/03/23 07:39 1<0.130Chloromethane 1.00 0.150 ug/L 06/03/23 07:39 1<0.150cis-1,2-Dichloroethene 1.00 0.200 ug/L 06/03/23 07:39 1<0.200cis-1,3-Dichloropropene 1.00 0.170 ug/L 06/03/23 07:39 1<0.170Dibromochloromethane 1.00 0.270 ug/L 06/03/23 07:39 1<0.270Dibromomethane 1.00 0.130 ug/L 06/03/23 07:39 1<0.130Ethylbenzene 5.00 1.70 ug/L 06/03/23 07:39 1<1.70Iodomethane 1.00 0.230 ug/L 06/03/23 07:39 1<0.230Methylene Chloride 1.00 0.110 ug/L 06/03/23 07:39 1<0.110Styrene 1.00 0.170 ug/L 06/03/23 07:39 1<0.170Tetrachloroethene 1.00 0.140 ug/L 06/03/23 07:39 1<0.140Toluene 1.00 0.210 ug/L 06/03/23 07:39 1<0.210trans-1,2-Dichloroethene 1.00 0.150 ug/L 06/03/23 07:39 1<0.150trans-1,3-Dichloropropene 1.00 0.700 ug/L 06/03/23 07:39 1<0.700trans-1,4-Dichloro-2-butene 1.00 0.150 ug/L 06/03/23 07:39 1<0.150Trichloroethene Eurofins Raleigh Page 20 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-6Client Sample ID: 7601-SW1 Matrix: WaterDate Collected: 05/23/23 10:35 Date Received: 05/25/23 10:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL <0.240 1.00 0.240 ug/L 06/03/23 07:39 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Trichlorofluoromethane 5.00 0.950 ug/L 06/03/23 07:39 1<0.950Vinyl acetate 1.00 0.320 ug/L 06/03/23 07:39 1<0.320Vinyl chloride 3.00 0.450 ug/L 06/03/23 07:39 1<0.450Xylenes, Total 4-Bromofluorobenzene (Surr)87 53-136 06/03/23 07:39 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)82 06/03/23 07:39 167-129 Toluene-d8 (Surr)78 06/03/23 07:39 159-134 Method: SW846 6010D - Metals (ICP) - Total Recoverable RL MDL <6.40 20.0 6.40 ug/L 05/30/23 06:22 05/30/23 15:51 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Arsenic 10.0 4.40 ug/L 05/30/23 06:22 05/30/23 15:51 145.5Barium 4.00 0.300 ug/L 05/30/23 06:22 05/30/23 15:51 1<0.300Beryllium 5.00 0.440 ug/L 05/30/23 06:22 05/30/23 15:51 1<0.440Cadmium 10.0 1.10 ug/L 05/30/23 06:22 05/30/23 15:51 1<1.10Chromium 10.0 1.40 ug/L 05/30/23 06:22 05/30/23 15:51 13.88 JCobalt 20.0 3.20 ug/L 05/30/23 06:22 05/30/23 15:51 1<3.20Copper 10.0 6.60 ug/L 05/30/23 06:22 05/30/23 15:51 1<6.60Lead 40.0 3.30 ug/L 05/30/23 06:22 05/30/23 15:51 1<3.30Nickel 20.0 10.0 ug/L 05/30/23 06:22 05/30/23 15:51 1<10.0Selenium 10.0 1.50 ug/L 05/30/23 06:22 05/30/23 15:51 1<1.50Silver 10.0 1.00 ug/L 05/30/23 06:22 05/30/23 15:51 15.09 JVanadium 20.0 8.70 ug/L 05/30/23 06:22 05/30/23 15:51 1<8.70Zinc Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable RL MDL <0.340 5.00 0.340 ug/L 05/30/23 06:22 05/30/23 23:27 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Antimony 1.00 0.260 ug/L 05/30/23 06:22 05/30/23 23:27 1<0.260Thallium Lab Sample ID: 752-7507-7Client Sample ID: 7601-SW2 Matrix: WaterDate Collected: 05/23/23 11:16 Date Received: 05/25/23 10:00 Method: SW846 8260 SIM - 1,4-Dioxane by SIM RL MDL 19.4 0.500 0.320 ug/L 05/31/23 17:18 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,4-Dioxane 4-Bromofluorobenzene (Surr)88 70-130 05/31/23 17:18 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Method: SW846 8260D - Volatile Organic Compounds by GC/MS RL MDL <0.170 1.00 0.170 ug/L 06/03/23 08:09 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.120 ug/L 06/03/23 08:09 1<0.1201,1,1-Trichloroethane 1.00 0.280 ug/L 06/03/23 08:09 1<0.2801,1,2,2-Tetrachloroethane 1.00 0.140 ug/L 06/03/23 08:09 1<0.1401,1,2-Trichloroethane 1.00 0.130 ug/L 06/03/23 08:09 1<0.1301,1-Dichloroethane 1.00 0.210 ug/L 06/03/23 08:09 1<0.2101,1-Dichloroethene 1.00 0.490 ug/L 06/03/23 08:09 1<0.4901,2,3-Trichloropropane Eurofins Raleigh Page 21 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-7Client Sample ID: 7601-SW2 Matrix: WaterDate Collected: 05/23/23 11:16 Date Received: 05/25/23 10:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL <0.480 1.00 0.480 ug/L 06/03/23 08:09 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,2-Dibromo-3-Chloropropane 1.00 0.660 ug/L 06/03/23 08:09 1<0.6601,2-Dibromoethane 1.00 0.190 ug/L 06/03/23 08:09 1<0.1901,2-Dichlorobenzene 1.00 0.210 ug/L 06/03/23 08:09 1<0.2101,2-Dichloroethane 1.00 0.100 ug/L 06/03/23 08:09 1<0.1001,2-Dichloropropane 1.00 0.190 ug/L 06/03/23 08:09 1<0.1901,4-Dichlorobenzene 20.0 10.0 ug/L 06/03/23 08:09 1<10.02-Butanone (MEK) 5.00 0.880 ug/L 06/03/23 08:09 1<0.8802-Hexanone 5.00 1.10 ug/L 06/03/23 08:09 1<1.104-Methyl-2-pentanone (MIBK) 20.0 10.0 ug/L 06/03/23 08:09 1<10.0Acetone 10.0 3.50 ug/L 06/03/23 08:09 1<3.50Acrylonitrile 1.00 0.150 ug/L 06/03/23 08:09 1<0.150Benzene 1.00 0.480 ug/L 06/03/23 08:09 1<0.480Bromochloromethane 1.00 0.170 ug/L 06/03/23 08:09 1<0.170Bromodichloromethane 1.00 0.220 ug/L 06/03/23 08:09 1<0.220Bromoform 1.00 0.140 ug/L 06/03/23 08:09 1<0.140Bromomethane 5.00 1.50 ug/L 06/03/23 08:09 1<1.50Carbon disulfide 1.00 0.170 ug/L 06/03/23 08:09 1<0.170Carbon tetrachloride 1.00 0.170 ug/L 06/03/23 08:09 1<0.170Chlorobenzene 1.00 0.230 ug/L 06/03/23 08:09 1<0.230Chloroethane 1.00 0.180 ug/L 06/03/23 08:09 1<0.180Chloroform 1.00 0.130 ug/L 06/03/23 08:09 1<0.130Chloromethane 1.00 0.150 ug/L 06/03/23 08:09 1<0.150cis-1,2-Dichloroethene 1.00 0.200 ug/L 06/03/23 08:09 1<0.200cis-1,3-Dichloropropene 1.00 0.170 ug/L 06/03/23 08:09 1<0.170Dibromochloromethane 1.00 0.270 ug/L 06/03/23 08:09 1<0.270Dibromomethane 1.00 0.130 ug/L 06/03/23 08:09 1<0.130Ethylbenzene 5.00 1.70 ug/L 06/03/23 08:09 1<1.70Iodomethane 1.00 0.230 ug/L 06/03/23 08:09 1<0.230Methylene Chloride 1.00 0.110 ug/L 06/03/23 08:09 1<0.110Styrene 1.00 0.170 ug/L 06/03/23 08:09 1<0.170Tetrachloroethene 1.00 0.140 ug/L 06/03/23 08:09 1<0.140Toluene 1.00 0.210 ug/L 06/03/23 08:09 1<0.210trans-1,2-Dichloroethene 1.00 0.150 ug/L 06/03/23 08:09 1<0.150trans-1,3-Dichloropropene 1.00 0.700 ug/L 06/03/23 08:09 1<0.700trans-1,4-Dichloro-2-butene 1.00 0.150 ug/L 06/03/23 08:09 1<0.150Trichloroethene 1.00 0.240 ug/L 06/03/23 08:09 1<0.240Trichlorofluoromethane 5.00 0.950 ug/L 06/03/23 08:09 1<0.950Vinyl acetate 1.00 0.320 ug/L 06/03/23 08:09 1<0.320Vinyl chloride 3.00 0.450 ug/L 06/03/23 08:09 1<0.450Xylenes, Total 4-Bromofluorobenzene (Surr)85 53-136 06/03/23 08:09 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)84 06/03/23 08:09 167-129 Toluene-d8 (Surr)77 06/03/23 08:09 159-134 Method: SW846 6010D - Metals (ICP) - Total Recoverable RL MDL <6.40 20.0 6.40 ug/L 05/30/23 06:22 05/30/23 15:54 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Arsenic 10.0 4.40 ug/L 05/30/23 06:22 05/30/23 15:54 132.8Barium Eurofins Raleigh Page 22 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-7Client Sample ID: 7601-SW2 Matrix: WaterDate Collected: 05/23/23 11:16 Date Received: 05/25/23 10:00 Method: SW846 6010D - Metals (ICP) - Total Recoverable (Continued) RL MDL <0.300 4.00 0.300 ug/L 05/30/23 06:22 05/30/23 15:54 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Beryllium 5.00 0.440 ug/L 05/30/23 06:22 05/30/23 15:54 1<0.440Cadmium 10.0 1.10 ug/L 05/30/23 06:22 05/30/23 15:54 1<1.10Chromium 10.0 1.40 ug/L 05/30/23 06:22 05/30/23 15:54 1<1.40Cobalt 20.0 3.20 ug/L 05/30/23 06:22 05/30/23 15:54 1<3.20Copper 10.0 6.60 ug/L 05/30/23 06:22 05/30/23 15:54 1<6.60Lead 40.0 3.30 ug/L 05/30/23 06:22 05/30/23 15:54 1<3.30Nickel 20.0 10.0 ug/L 05/30/23 06:22 05/30/23 15:54 1<10.0Selenium 10.0 1.50 ug/L 05/30/23 06:22 05/30/23 15:54 1<1.50Silver 10.0 1.00 ug/L 05/30/23 06:22 05/30/23 15:54 1<1.00Vanadium 20.0 8.70 ug/L 05/30/23 06:22 05/30/23 15:54 1<8.70Zinc Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable RL MDL <0.340 5.00 0.340 ug/L 05/30/23 06:22 05/30/23 23:31 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Antimony 1.00 0.260 ug/L 05/30/23 06:22 05/30/23 23:31 1<0.260Thallium Lab Sample ID: 752-7507-8Client Sample ID: 7601-SW3 Matrix: WaterDate Collected: 05/24/23 12:35 Date Received: 05/25/23 10:00 Method: SW846 8260 SIM - 1,4-Dioxane by SIM RL MDL 4.58 0.500 0.320 ug/L 05/31/23 17:43 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,4-Dioxane 4-Bromofluorobenzene (Surr)97 70-130 05/31/23 17:43 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Method: SW846 8260D - Volatile Organic Compounds by GC/MS RL MDL <0.170 1.00 0.170 ug/L 06/03/23 08:39 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.120 ug/L 06/03/23 08:39 1<0.1201,1,1-Trichloroethane 1.00 0.280 ug/L 06/03/23 08:39 1<0.2801,1,2,2-Tetrachloroethane 1.00 0.140 ug/L 06/03/23 08:39 1<0.1401,1,2-Trichloroethane 1.00 0.130 ug/L 06/03/23 08:39 1<0.1301,1-Dichloroethane 1.00 0.210 ug/L 06/03/23 08:39 1<0.2101,1-Dichloroethene 1.00 0.490 ug/L 06/03/23 08:39 1<0.4901,2,3-Trichloropropane 1.00 0.480 ug/L 06/03/23 08:39 1<0.4801,2-Dibromo-3-Chloropropane 1.00 0.660 ug/L 06/03/23 08:39 1<0.6601,2-Dibromoethane 1.00 0.190 ug/L 06/03/23 08:39 1<0.1901,2-Dichlorobenzene 1.00 0.210 ug/L 06/03/23 08:39 1<0.2101,2-Dichloroethane 1.00 0.100 ug/L 06/03/23 08:39 1<0.1001,2-Dichloropropane 1.00 0.190 ug/L 06/03/23 08:39 1<0.1901,4-Dichlorobenzene 20.0 10.0 ug/L 06/03/23 08:39 1<10.02-Butanone (MEK) 5.00 0.880 ug/L 06/03/23 08:39 1<0.8802-Hexanone 5.00 1.10 ug/L 06/03/23 08:39 1<1.104-Methyl-2-pentanone (MIBK) 20.0 10.0 ug/L 06/03/23 08:39 1<10.0Acetone 10.0 3.50 ug/L 06/03/23 08:39 1<3.50Acrylonitrile 1.00 0.150 ug/L 06/03/23 08:39 1<0.150Benzene 1.00 0.480 ug/L 06/03/23 08:39 1<0.480Bromochloromethane 1.00 0.170 ug/L 06/03/23 08:39 1<0.170Bromodichloromethane Eurofins Raleigh Page 23 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-8Client Sample ID: 7601-SW3 Matrix: WaterDate Collected: 05/24/23 12:35 Date Received: 05/25/23 10:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL <0.220 1.00 0.220 ug/L 06/03/23 08:39 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Bromoform 1.00 0.140 ug/L 06/03/23 08:39 1<0.140Bromomethane 5.00 1.50 ug/L 06/03/23 08:39 1<1.50Carbon disulfide 1.00 0.170 ug/L 06/03/23 08:39 1<0.170Carbon tetrachloride 1.00 0.170 ug/L 06/03/23 08:39 1<0.170Chlorobenzene 1.00 0.230 ug/L 06/03/23 08:39 1<0.230Chloroethane 1.00 0.180 ug/L 06/03/23 08:39 10.725 JChloroform 1.00 0.130 ug/L 06/03/23 08:39 1<0.130Chloromethane 1.00 0.150 ug/L 06/03/23 08:39 1<0.150cis-1,2-Dichloroethene 1.00 0.200 ug/L 06/03/23 08:39 1<0.200cis-1,3-Dichloropropene 1.00 0.170 ug/L 06/03/23 08:39 1<0.170Dibromochloromethane 1.00 0.270 ug/L 06/03/23 08:39 1<0.270Dibromomethane 1.00 0.130 ug/L 06/03/23 08:39 1<0.130Ethylbenzene 5.00 1.70 ug/L 06/03/23 08:39 1<1.70Iodomethane 1.00 0.230 ug/L 06/03/23 08:39 1<0.230Methylene Chloride 1.00 0.110 ug/L 06/03/23 08:39 1<0.110Styrene 1.00 0.170 ug/L 06/03/23 08:39 1<0.170Tetrachloroethene 1.00 0.140 ug/L 06/03/23 08:39 1<0.140Toluene 1.00 0.210 ug/L 06/03/23 08:39 1<0.210trans-1,2-Dichloroethene 1.00 0.150 ug/L 06/03/23 08:39 1<0.150trans-1,3-Dichloropropene 1.00 0.700 ug/L 06/03/23 08:39 1<0.700trans-1,4-Dichloro-2-butene 1.00 0.150 ug/L 06/03/23 08:39 1<0.150Trichloroethene 1.00 0.240 ug/L 06/03/23 08:39 1<0.240Trichlorofluoromethane 5.00 0.950 ug/L 06/03/23 08:39 1<0.950Vinyl acetate 1.00 0.320 ug/L 06/03/23 08:39 1<0.320Vinyl chloride 3.00 0.450 ug/L 06/03/23 08:39 1<0.450Xylenes, Total 4-Bromofluorobenzene (Surr)88 53-136 06/03/23 08:39 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)88 06/03/23 08:39 167-129 Toluene-d8 (Surr)76 06/03/23 08:39 159-134 Method: SW846 6010D - Metals (ICP) - Total Recoverable RL MDL <6.40 20.0 6.40 ug/L 05/30/23 06:22 05/30/23 15:58 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Arsenic 10.0 4.40 ug/L 05/30/23 06:22 05/30/23 15:58 120.8Barium 4.00 0.300 ug/L 05/30/23 06:22 05/30/23 15:58 1<0.300Beryllium 5.00 0.440 ug/L 05/30/23 06:22 05/30/23 15:58 1<0.440Cadmium 10.0 1.10 ug/L 05/30/23 06:22 05/30/23 15:58 1<1.10Chromium 10.0 1.40 ug/L 05/30/23 06:22 05/30/23 15:58 1<1.40Cobalt 20.0 3.20 ug/L 05/30/23 06:22 05/30/23 15:58 1<3.20Copper 10.0 6.60 ug/L 05/30/23 06:22 05/30/23 15:58 1<6.60Lead 40.0 3.30 ug/L 05/30/23 06:22 05/30/23 15:58 1<3.30Nickel 20.0 10.0 ug/L 05/30/23 06:22 05/30/23 15:58 1<10.0Selenium 10.0 1.50 ug/L 05/30/23 06:22 05/30/23 15:58 1<1.50Silver 10.0 1.00 ug/L 05/30/23 06:22 05/30/23 15:58 11.73 JVanadium 20.0 8.70 ug/L 05/30/23 06:22 05/30/23 15:58 1<8.70Zinc Eurofins Raleigh Page 24 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-8Client Sample ID: 7601-SW3 Matrix: WaterDate Collected: 05/24/23 12:35 Date Received: 05/25/23 10:00 Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable RL MDL <0.340 5.00 0.340 ug/L 05/30/23 06:22 05/30/23 23:35 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Antimony 1.00 0.260 ug/L 05/30/23 06:22 05/30/23 23:35 1<0.260Thallium Lab Sample ID: 752-7507-9Client Sample ID: 7601-SW4 Matrix: WaterDate Collected: 05/24/23 13:07 Date Received: 05/25/23 10:00 Method: SW846 8260 SIM - 1,4-Dioxane by SIM RL MDL 4.05 0.500 0.320 ug/L 05/31/23 18:08 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,4-Dioxane 4-Bromofluorobenzene (Surr)101 70-130 05/31/23 18:08 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Method: SW846 8260D - Volatile Organic Compounds by GC/MS RL MDL <0.170 1.00 0.170 ug/L 06/03/23 09:08 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.120 ug/L 06/03/23 09:08 1<0.1201,1,1-Trichloroethane 1.00 0.280 ug/L 06/03/23 09:08 1<0.2801,1,2,2-Tetrachloroethane 1.00 0.140 ug/L 06/03/23 09:08 1<0.1401,1,2-Trichloroethane 1.00 0.130 ug/L 06/03/23 09:08 1<0.1301,1-Dichloroethane 1.00 0.210 ug/L 06/03/23 09:08 1<0.2101,1-Dichloroethene 1.00 0.490 ug/L 06/03/23 09:08 1<0.4901,2,3-Trichloropropane 1.00 0.480 ug/L 06/03/23 09:08 1<0.4801,2-Dibromo-3-Chloropropane 1.00 0.660 ug/L 06/03/23 09:08 1<0.6601,2-Dibromoethane 1.00 0.190 ug/L 06/03/23 09:08 1<0.1901,2-Dichlorobenzene 1.00 0.210 ug/L 06/03/23 09:08 1<0.2101,2-Dichloroethane 1.00 0.100 ug/L 06/03/23 09:08 1<0.1001,2-Dichloropropane 1.00 0.190 ug/L 06/03/23 09:08 1<0.1901,4-Dichlorobenzene 20.0 10.0 ug/L 06/03/23 09:08 1<10.02-Butanone (MEK) 5.00 0.880 ug/L 06/03/23 09:08 1<0.8802-Hexanone 5.00 1.10 ug/L 06/03/23 09:08 1<1.104-Methyl-2-pentanone (MIBK) 20.0 10.0 ug/L 06/03/23 09:08 1<10.0Acetone 10.0 3.50 ug/L 06/03/23 09:08 1<3.50Acrylonitrile 1.00 0.150 ug/L 06/03/23 09:08 1<0.150Benzene 1.00 0.480 ug/L 06/03/23 09:08 1<0.480Bromochloromethane 1.00 0.170 ug/L 06/03/23 09:08 10.287 JBromodichloromethane 1.00 0.220 ug/L 06/03/23 09:08 1<0.220Bromoform 1.00 0.140 ug/L 06/03/23 09:08 1<0.140Bromomethane 5.00 1.50 ug/L 06/03/23 09:08 1<1.50Carbon disulfide 1.00 0.170 ug/L 06/03/23 09:08 1<0.170Carbon tetrachloride 1.00 0.170 ug/L 06/03/23 09:08 1<0.170Chlorobenzene 1.00 0.230 ug/L 06/03/23 09:08 1<0.230Chloroethane 1.00 0.180 ug/L 06/03/23 09:08 10.733 JChloroform 1.00 0.130 ug/L 06/03/23 09:08 1<0.130Chloromethane 1.00 0.150 ug/L 06/03/23 09:08 1<0.150cis-1,2-Dichloroethene 1.00 0.200 ug/L 06/03/23 09:08 1<0.200cis-1,3-Dichloropropene 1.00 0.170 ug/L 06/03/23 09:08 1<0.170Dibromochloromethane 1.00 0.270 ug/L 06/03/23 09:08 1<0.270Dibromomethane 1.00 0.130 ug/L 06/03/23 09:08 1<0.130Ethylbenzene Eurofins Raleigh Page 25 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-9Client Sample ID: 7601-SW4 Matrix: WaterDate Collected: 05/24/23 13:07 Date Received: 05/25/23 10:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL <1.70 5.00 1.70 ug/L 06/03/23 09:08 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Iodomethane 1.00 0.230 ug/L 06/03/23 09:08 1<0.230Methylene Chloride 1.00 0.110 ug/L 06/03/23 09:08 1<0.110Styrene 1.00 0.170 ug/L 06/03/23 09:08 1<0.170Tetrachloroethene 1.00 0.140 ug/L 06/03/23 09:08 1<0.140Toluene 1.00 0.210 ug/L 06/03/23 09:08 1<0.210trans-1,2-Dichloroethene 1.00 0.150 ug/L 06/03/23 09:08 1<0.150trans-1,3-Dichloropropene 1.00 0.700 ug/L 06/03/23 09:08 1<0.700trans-1,4-Dichloro-2-butene 1.00 0.150 ug/L 06/03/23 09:08 1<0.150Trichloroethene 1.00 0.240 ug/L 06/03/23 09:08 1<0.240Trichlorofluoromethane 5.00 0.950 ug/L 06/03/23 09:08 1<0.950Vinyl acetate 1.00 0.320 ug/L 06/03/23 09:08 1<0.320Vinyl chloride 3.00 0.450 ug/L 06/03/23 09:08 1<0.450Xylenes, Total 4-Bromofluorobenzene (Surr)87 53-136 06/03/23 09:08 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)83 06/03/23 09:08 167-129 Toluene-d8 (Surr)78 06/03/23 09:08 159-134 Method: SW846 6010D - Metals (ICP) - Total Recoverable RL MDL <6.40 20.0 6.40 ug/L 05/30/23 06:22 05/30/23 16:01 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Arsenic 10.0 4.40 ug/L 05/30/23 06:22 05/30/23 16:01 119.1Barium 4.00 0.300 ug/L 05/30/23 06:22 05/30/23 16:01 1<0.300Beryllium 5.00 0.440 ug/L 05/30/23 06:22 05/30/23 16:01 1<0.440Cadmium 10.0 1.10 ug/L 05/30/23 06:22 05/30/23 16:01 1<1.10Chromium 10.0 1.40 ug/L 05/30/23 06:22 05/30/23 16:01 1<1.40Cobalt 20.0 3.20 ug/L 05/30/23 06:22 05/30/23 16:01 1<3.20Copper 10.0 6.60 ug/L 05/30/23 06:22 05/30/23 16:01 1<6.60Lead 40.0 3.30 ug/L 05/30/23 06:22 05/30/23 16:01 1<3.30Nickel 20.0 10.0 ug/L 05/30/23 06:22 05/30/23 16:01 1<10.0Selenium 10.0 1.50 ug/L 05/30/23 06:22 05/30/23 16:01 1<1.50Silver 10.0 1.00 ug/L 05/30/23 06:22 05/30/23 16:01 11.59 JVanadium 20.0 8.70 ug/L 05/30/23 06:22 05/30/23 16:01 1<8.70Zinc Method: SW846 6020B - Metals (ICP/MS) - Total Recoverable RL MDL <0.340 5.00 0.340 ug/L 05/30/23 06:22 05/30/23 23:39 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier Antimony 1.00 0.260 ug/L 05/30/23 06:22 05/30/23 23:39 1<0.260Thallium Lab Sample ID: 752-7507-10Client Sample ID: 7601-Trip Blank Matrix: WaterDate Collected: 05/22/23 14:45 Date Received: 05/25/23 10:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS RL MDL <0.170 1.00 0.170 ug/L 06/02/23 22:48 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1,1,2-Tetrachloroethane 1.00 0.120 ug/L 06/02/23 22:48 1<0.1201,1,1-Trichloroethane 1.00 0.280 ug/L 06/02/23 22:48 1<0.2801,1,2,2-Tetrachloroethane 1.00 0.140 ug/L 06/02/23 22:48 1<0.1401,1,2-Trichloroethane 1.00 0.130 ug/L 06/02/23 22:48 1<0.1301,1-Dichloroethane Eurofins Raleigh Page 26 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Client Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Lab Sample ID: 752-7507-10Client Sample ID: 7601-Trip Blank Matrix: WaterDate Collected: 05/22/23 14:45 Date Received: 05/25/23 10:00 Method: SW846 8260D - Volatile Organic Compounds by GC/MS (Continued) RL MDL <0.210 1.00 0.210 ug/L 06/02/23 22:48 1 Analyte Dil FacAnalyzedPreparedUnitDResultQualifier 1,1-Dichloroethene 1.00 0.490 ug/L 06/02/23 22:48 1<0.4901,2,3-Trichloropropane 1.00 0.480 ug/L 06/02/23 22:48 1<0.4801,2-Dibromo-3-Chloropropane 1.00 0.660 ug/L 06/02/23 22:48 1<0.6601,2-Dibromoethane 1.00 0.190 ug/L 06/02/23 22:48 1<0.1901,2-Dichlorobenzene 1.00 0.210 ug/L 06/02/23 22:48 1<0.2101,2-Dichloroethane 1.00 0.100 ug/L 06/02/23 22:48 1<0.1001,2-Dichloropropane 1.00 0.190 ug/L 06/02/23 22:48 1<0.1901,4-Dichlorobenzene 20.0 10.0 ug/L 06/02/23 22:48 1<10.02-Butanone (MEK) 5.00 0.880 ug/L 06/02/23 22:48 1<0.8802-Hexanone 5.00 1.10 ug/L 06/02/23 22:48 1<1.104-Methyl-2-pentanone (MIBK) 20.0 10.0 ug/L 06/02/23 22:48 1<10.0Acetone 10.0 3.50 ug/L 06/02/23 22:48 1<3.50Acrylonitrile 1.00 0.150 ug/L 06/02/23 22:48 1<0.150Benzene 1.00 0.480 ug/L 06/02/23 22:48 1<0.480Bromochloromethane 1.00 0.170 ug/L 06/02/23 22:48 1<0.170Bromodichloromethane 1.00 0.220 ug/L 06/02/23 22:48 1<0.220Bromoform 1.00 0.140 ug/L 06/02/23 22:48 1<0.140Bromomethane 5.00 1.50 ug/L 06/02/23 22:48 1<1.50Carbon disulfide 1.00 0.170 ug/L 06/02/23 22:48 1<0.170Carbon tetrachloride 1.00 0.170 ug/L 06/02/23 22:48 1<0.170Chlorobenzene 1.00 0.230 ug/L 06/02/23 22:48 1<0.230Chloroethane 1.00 0.180 ug/L 06/02/23 22:48 10.205 JChloroform 1.00 0.130 ug/L 06/02/23 22:48 1<0.130Chloromethane 1.00 0.150 ug/L 06/02/23 22:48 1<0.150cis-1,2-Dichloroethene 1.00 0.200 ug/L 06/02/23 22:48 1<0.200cis-1,3-Dichloropropene 1.00 0.170 ug/L 06/02/23 22:48 1<0.170Dibromochloromethane 1.00 0.270 ug/L 06/02/23 22:48 1<0.270Dibromomethane 1.00 0.200 ug/L 06/02/23 22:48 1<0.200Dichlorodifluoromethane 1.00 0.130 ug/L 06/02/23 22:48 1<0.130Ethylbenzene 5.00 1.70 ug/L 06/02/23 22:48 1<1.70Iodomethane 1.00 0.230 ug/L 06/02/23 22:48 1<0.230Methylene Chloride 1.00 0.110 ug/L 06/02/23 22:48 1<0.110Styrene 1.00 0.170 ug/L 06/02/23 22:48 1<0.170Tetrachloroethene 1.00 0.140 ug/L 06/02/23 22:48 1<0.140Toluene 1.00 0.210 ug/L 06/02/23 22:48 1<0.210trans-1,2-Dichloroethene 1.00 0.150 ug/L 06/02/23 22:48 1<0.150trans-1,3-Dichloropropene 1.00 0.700 ug/L 06/02/23 22:48 1<0.700trans-1,4-Dichloro-2-butene 1.00 0.150 ug/L 06/02/23 22:48 1<0.150Trichloroethene 1.00 0.240 ug/L 06/02/23 22:48 1<0.240Trichlorofluoromethane 5.00 0.950 ug/L 06/02/23 22:48 1<0.950Vinyl acetate 1.00 0.320 ug/L 06/02/23 22:48 1<0.320Vinyl chloride 3.00 0.450 ug/L 06/02/23 22:48 1<0.450Xylenes, Total 4-Bromofluorobenzene (Surr)87 53-136 06/02/23 22:48 1 Surrogate Dil FacAnalyzedPreparedQualifierLimits%Recovery Dibromofluoromethane (Surr)91 06/02/23 22:48 167-129 Toluene-d8 (Surr)77 06/02/23 22:48 159-134 Eurofins Raleigh Page 27 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260 SIM - 1,4-Dioxane by SIM Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (70-130) BFB 100752-7507-1 Percent Surrogate Recovery (Acceptance Limits) 7601-MW10S 107752-7507-2 7601-MW6 82752-7507-3 7601-MW7 105752-7507-3 MS 7601-MW7 105752-7507-3 MSD 7601-MW7 99752-7507-4 7601-MW8 101752-7507-5 7601-MW9 123752-7507-5 MS 7601-MW9 118752-7507-5 MSD 7601-MW9 93752-7507-6 7601-SW1 88752-7507-7 7601-SW2 97752-7507-8 7601-SW3 101752-7507-9 7601-SW4 113LCS 680-781127/20 Lab Control Sample 121LCS 680-781391/3 Lab Control Sample 107LCSD 680-781127/4 Lab Control Sample Dup 114LCSD 680-781391/4 Lab Control Sample Dup 101MB 680-781127/6 Method Blank 110MB 680-781391/6 Method Blank Surrogate Legend BFB = 4-Bromofluorobenzene (Surr) Method: 8260D - Volatile Organic Compounds by GC/MS Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (53-136)(67-129)(59-134) BFB DBFM TOL 93 90 79752-7507-1 Percent Surrogate Recovery (Acceptance Limits) 7601-MW10S 90 81 75752-7507-2 7601-MW6 89 90 80752-7507-3 7601-MW7 96 83 76752-7507-3 MS 7601-MW7 93 80 76752-7507-3 MSD 7601-MW7 91 86 78752-7507-4 7601-MW8 90 84 76752-7507-5 7601-MW9 87 82 78752-7507-6 7601-SW1 85 84 77752-7507-7 7601-SW2 88 88 76752-7507-8 7601-SW3 87 83 78752-7507-9 7601-SW4 87 91 77752-7507-10 7601-Trip Blank 90 78 78LCS 752-3101/5 Lab Control Sample 90 78 77LCS 752-3113/5 Lab Control Sample 94 80 76LCSD 752-3101/6 Lab Control Sample Dup 90 78 75LCSD 752-3113/6 Lab Control Sample Dup 91 83 76MB 752-3101/8 Method Blank 93 82 75MB 752-3113/8 Method Blank 88 80 77MRL 752-3101/4 Lab Control Sample 89 83 77MRL 752-3113/4 Lab Control Sample Surrogate Legend Eurofins Raleigh Page 28 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Surrogate Summary Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill BFB = 4-Bromofluorobenzene (Surr) DBFM = Dibromofluoromethane (Surr) TOL = Toluene-d8 (Surr) Method: 8270E - Semivolatile Organic Compounds (GC/MS) Prep Type: Total/NAMatrix: Water Lab Sample ID Client Sample ID (30-130)(25-130)(10-130)(30-130)(10-130)(35-131) TBP FBP 2FP NBZ PHL TPHL 60 68 31 68 20 74752-7507-1 Percent Surrogate Recovery (Acceptance Limits) 7601-MW10S 57 61 29 2065 61752-7507-2 7601-MW6 62 59 38 2673 73752-7507-3 7601-MW7 67 72 34 2373 82752-7507-3 MS 7601-MW7 58 61 30 2261 77752-7507-3 MSD 7601-MW7 62 61 31 2069 70752-7507-4 7601-MW8 63 63 33 2271 72752-7507-5 7601-MW9 64 67 32 2368 82LCS 680-780784/2-A Lab Control Sample 65 71 35 2374 76MB 680-780784/1-A Method Blank Surrogate Legend TBP = 2,4,6-Tribromophenol (Surr) FBP = 2-Fluorobiphenyl 2FP = 2-Fluorophenol (Surr) NBZ = Nitrobenzene-d5 (Surr) PHL = Phenol-d5 (Surr) TPHL = Terphenyl-d14 (Surr) Eurofins Raleigh Page 29 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260 SIM - 1,4-Dioxane by SIM Client Sample ID: Method BlankLab Sample ID: MB 680-781127/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 781127 RL MDL 1,4-Dioxane <0.320 0.500 0.320 ug/L 05/31/23 13:36 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier 4-Bromofluorobenzene (Surr)101 70-130 05/31/23 13:36 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 680-781127/20 Matrix: Water Prep Type: Total/NA Analysis Batch: 781127 1,4-Dioxane 10.0 9.451 ug/L 95 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 4-Bromofluorobenzene (Surr)70 -130 Surrogate 113 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 680-781127/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 781127 1,4-Dioxane 10.0 10.10 ug/L 101 70-130 7 30 Analyte LCSD LCSD DUnitResultQualifier %Rec Spike Added %Rec Limits LimitRPD RPD 4-Bromofluorobenzene (Surr)70 -130 Surrogate 107 LCSD LCSD Qualifier Limits%Recovery Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 781127 1,4-Dioxane 1.47 10.0 11.68 ug/L 102 70-130 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 4-Bromofluorobenzene (Surr)70 -130 Surrogate 105 MS MS Qualifier Limits%Recovery Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 781127 1,4-Dioxane 1.47 10.0 11.68 ug/L 102 70-130 0 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 4-Bromofluorobenzene (Surr)70 -130 Surrogate 105 MSD MSD Qualifier Limits%Recovery Eurofins Raleigh Page 30 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260 SIM - 1,4-Dioxane by SIM (Continued) Client Sample ID: Method BlankLab Sample ID: MB 680-781391/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 781391 RL MDL 1,4-Dioxane <0.320 0.500 0.320 ug/L 06/01/23 15:15 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier 4-Bromofluorobenzene (Surr)110 70-130 06/01/23 15:15 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery Client Sample ID: Lab Control SampleLab Sample ID: LCS 680-781391/3 Matrix: Water Prep Type: Total/NA Analysis Batch: 781391 1,4-Dioxane 10.0 9.727 ug/L 97 70-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 4-Bromofluorobenzene (Surr)70 -130 Surrogate 121 LCS LCS Qualifier Limits%Recovery Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 680-781391/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 781391 1,4-Dioxane 10.0 9.956 ug/L 100 70-130 2 30 Analyte LCSD LCSD DUnitResultQualifier %Rec Spike Added %Rec Limits LimitRPD RPD 4-Bromofluorobenzene (Surr)70 -130 Surrogate 114 LCSD LCSD Qualifier Limits%Recovery Client Sample ID: 7601-MW9Lab Sample ID: 752-7507-5 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 781391 1,4-Dioxane 0.888 10.0 10.68 ug/L 98 70-130 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 4-Bromofluorobenzene (Surr)70 -130 Surrogate 123 MS MS Qualifier Limits%Recovery Client Sample ID: 7601-MW9Lab Sample ID: 752-7507-5 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 781391 1,4-Dioxane 0.888 10.0 10.54 ug/L 96 70-130 1 30 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 4-Bromofluorobenzene (Surr)70 -130 Surrogate 118 MSD MSD Qualifier Limits%Recovery Eurofins Raleigh Page 31 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260D - Volatile Organic Compounds by GC/MS Client Sample ID: Method BlankLab Sample ID: MB 752-3101/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 3101 RL MDL 1,1,1,2-Tetrachloroethane <0.170 1.00 0.170 ug/L 06/02/23 15:55 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <0.120 0.1201.00 ug/L 06/02/23 15:55 11,1,1-Trichloroethane <0.280 0.2801.00 ug/L 06/02/23 15:55 11,1,2,2-Tetrachloroethane <0.140 0.1401.00 ug/L 06/02/23 15:55 11,1,2-Trichloroethane <0.130 0.1301.00 ug/L 06/02/23 15:55 11,1-Dichloroethane <0.210 0.2101.00 ug/L 06/02/23 15:55 11,1-Dichloroethene <0.490 0.4901.00 ug/L 06/02/23 15:55 11,2,3-Trichloropropane <0.480 0.4801.00 ug/L 06/02/23 15:55 11,2-Dibromo-3-Chloropropane <0.660 0.6601.00 ug/L 06/02/23 15:55 11,2-Dibromoethane <0.190 0.1901.00 ug/L 06/02/23 15:55 11,2-Dichlorobenzene <0.210 0.2101.00 ug/L 06/02/23 15:55 11,2-Dichloroethane <0.100 0.1001.00 ug/L 06/02/23 15:55 11,2-Dichloropropane <0.190 0.1901.00 ug/L 06/02/23 15:55 11,4-Dichlorobenzene <10.0 10.020.0 ug/L 06/02/23 15:55 12-Butanone (MEK) <0.880 0.8805.00 ug/L 06/02/23 15:55 12-Hexanone <1.10 1.105.00 ug/L 06/02/23 15:55 14-Methyl-2-pentanone (MIBK) <10.0 10.020.0 ug/L 06/02/23 15:55 1Acetone <3.50 3.5010.0 ug/L 06/02/23 15:55 1Acrylonitrile <0.150 0.1501.00 ug/L 06/02/23 15:55 1Benzene <0.480 0.4801.00 ug/L 06/02/23 15:55 1Bromochloromethane <0.170 0.1701.00 ug/L 06/02/23 15:55 1Bromodichloromethane <0.220 0.2201.00 ug/L 06/02/23 15:55 1Bromoform <0.140 0.1401.00 ug/L 06/02/23 15:55 1Bromomethane <1.50 1.505.00 ug/L 06/02/23 15:55 1Carbon disulfide <0.170 0.1701.00 ug/L 06/02/23 15:55 1Carbon tetrachloride <0.170 0.1701.00 ug/L 06/02/23 15:55 1Chlorobenzene <0.230 0.2301.00 ug/L 06/02/23 15:55 1Chloroethane <0.180 0.1801.00 ug/L 06/02/23 15:55 1Chloroform <0.130 0.1301.00 ug/L 06/02/23 15:55 1Chloromethane <0.150 0.1501.00 ug/L 06/02/23 15:55 1cis-1,2-Dichloroethene <0.200 0.2001.00 ug/L 06/02/23 15:55 1cis-1,3-Dichloropropene <0.170 0.1701.00 ug/L 06/02/23 15:55 1Dibromochloromethane <0.270 0.2701.00 ug/L 06/02/23 15:55 1Dibromomethane <0.200 0.2001.00 ug/L 06/02/23 15:55 1Dichlorodifluoromethane <0.130 0.1301.00 ug/L 06/02/23 15:55 1Ethylbenzene <1.70 1.705.00 ug/L 06/02/23 15:55 1Iodomethane <0.230 0.2301.00 ug/L 06/02/23 15:55 1Methylene Chloride <0.110 0.1101.00 ug/L 06/02/23 15:55 1Styrene <0.170 0.1701.00 ug/L 06/02/23 15:55 1Tetrachloroethene <0.140 0.1401.00 ug/L 06/02/23 15:55 1Toluene <0.210 0.2101.00 ug/L 06/02/23 15:55 1trans-1,2-Dichloroethene <0.150 0.1501.00 ug/L 06/02/23 15:55 1trans-1,3-Dichloropropene <0.700 0.7001.00 ug/L 06/02/23 15:55 1trans-1,4-Dichloro-2-butene <0.150 0.1501.00 ug/L 06/02/23 15:55 1Trichloroethene <0.240 0.2401.00 ug/L 06/02/23 15:55 1Trichlorofluoromethane <0.950 0.9505.00 ug/L 06/02/23 15:55 1Vinyl acetate <0.320 0.3201.00 ug/L 06/02/23 15:55 1Vinyl chloride <0.450 0.4503.00 ug/L 06/02/23 15:55 1Xylenes, Total Eurofins Raleigh Page 32 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 752-3101/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 3101 4-Bromofluorobenzene (Surr)91 53-136 06/02/23 15:55 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 83 06/02/23 15:55 1Dibromofluoromethane (Surr)67-129 76 06/02/23 15:55 1Toluene-d8 (Surr)59-134 Client Sample ID: Lab Control SampleLab Sample ID: LCS 752-3101/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 3101 1,1,1,2-Tetrachloroethane 20.0 20.79 ug/L 104 71-120 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 1,1,1-Trichloroethane 20.0 22.95 ug/L 115 72-143 1,1,2,2-Tetrachloroethane 20.0 15.97 ug/L 80 59-133 1,1,2-Trichloroethane 20.0 17.72 ug/L 89 67-120 1,1-Dichloroethane 20.0 18.70 ug/L 94 79-141 1,1-Dichloroethene 20.0 18.65 ug/L 93 75-133 1,2,3-Trichloropropane 20.0 19.67 ug/L 98 69-127 1,2-Dibromo-3-Chloropropane 20.0 20.22 ug/L 101 37-157 1,2-Dibromoethane 20.0 18.59 ug/L 93 66-123 1,2-Dichlorobenzene 20.0 17.84 ug/L 89 76-120 1,2-Dichloroethane 20.0 24.26 ug/L 121 72-151 1,2-Dichloropropane 20.0 16.94 ug/L 85 78-125 1,4-Dichlorobenzene 20.0 18.25 ug/L 91 76-122 2-Butanone (MEK)40.0 36.68 ug/L 92 36-135 2-Hexanone 40.0 28.11 ug/L 70 36-191 4-Methyl-2-pentanone (MIBK)40.0 30.81 ug/L 77 56-166 Acetone 40.0 27.12 ug/L 68 10-158 Acrylonitrile 60.0 43.82 ug/L 73 10-200 Benzene 20.0 18.70 ug/L 94 80-134 Bromochloromethane 20.0 19.80 ug/L 99 74-128 Bromodichloromethane 20.0 23.46 ug/L 117 72-129 Bromoform 20.0 23.10 ug/L 115 73-120 Bromomethane 20.0 11.43 ug/L 57 38-189 Carbon disulfide 20.0 19.31 ug/L 97 65-173 Carbon tetrachloride 20.0 28.00 ug/L 140 68-142 Chlorobenzene 20.0 19.09 ug/L 95 80-120 Chloroethane 20.0 14.66 ug/L 73 45-213 Chloroform 20.0 19.90 ug/L 99 78-138 Chloromethane 20.0 12.59 ug/L 63 56-171 cis-1,2-Dichloroethene 20.0 17.21 ug/L 86 69-120 cis-1,3-Dichloropropene 20.0 20.87 ug/L 104 63-125 Dibromochloromethane 20.0 20.93 ug/L 105 73-120 Dibromomethane 20.0 21.22 ug/L 106 76-124 Dichlorodifluoromethane 20.0 19.79 ug/L 99 25-161 Ethylbenzene 20.0 18.03 ug/L 90 68-124 Iodomethane 20.0 20.88 ug/L 104 34-140 Methylene Chloride 20.0 19.25 ug/L 96 68-128 Styrene 20.0 18.56 ug/L 93 73-120 Tetrachloroethene 20.0 22.99 ug/L 115 40-181 Eurofins Raleigh Page 33 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 752-3101/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 3101 Toluene 20.0 18.56 ug/L 93 71-120 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits trans-1,2-Dichloroethene 20.0 17.62 ug/L 88 75-139 trans-1,3-Dichloropropene 20.0 22.75 ug/L 114 65-152 trans-1,4-Dichloro-2-butene 20.0 21.16 ug/L 106 10-142 Trichloroethene 20.0 20.80 ug/L 104 74-120 Trichlorofluoromethane 20.0 25.31 ug/L 127 68-183 Vinyl acetate 20.0 18.84 ug/L 94 10-198 Vinyl chloride 20.0 10.95 ug/L 55 49-150 Xylenes, Total 60.0 59.58 ug/L 99 77-121 4-Bromofluorobenzene (Surr)53 -136 Surrogate 90 LCS LCS Qualifier Limits%Recovery 78Dibromofluoromethane (Surr)67 -129 78Toluene-d8 (Surr)59 -134 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 752-3101/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 3101 1,1,1,2-Tetrachloroethane 20.0 19.93 ug/L 100 71-120 4 16 Analyte LCSD LCSD DUnitResultQualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,1,1-Trichloroethane 20.0 21.63 ug/L 108 72-143 6 18 1,1,2,2-Tetrachloroethane 20.0 15.96 ug/L 80 59-133 0 16 1,1,2-Trichloroethane 20.0 17.95 ug/L 90 67-120 1 18 1,1-Dichloroethane 20.0 17.16 ug/L 86 79-141 9 19 1,1-Dichloroethene 20.0 16.68 ug/L 83 75-133 11 20 1,2,3-Trichloropropane 20.0 19.73 ug/L 99 69-127 0 17 1,2-Dibromo-3-Chloropropane 20.0 18.40 ug/L 92 37-157 9 18 1,2-Dibromoethane 20.0 18.26 ug/L 91 66-123 2 15 1,2-Dichlorobenzene 20.0 17.01 ug/L 85 76-120 5 16 1,2-Dichloroethane 20.0 23.03 ug/L 115 72-151 5 16 1,2-Dichloropropane 20.0 16.83 ug/L 84 78-125 1 19 1,4-Dichlorobenzene 20.0 17.25 ug/L 86 76-122 6 16 2-Butanone (MEK)40.0 35.49 ug/L 89 36-135 3 19 2-Hexanone 40.0 29.93 ug/L 75 36-191 6 17 4-Methyl-2-pentanone (MIBK)40.0 31.86 ug/L 80 56-166 3 19 Acetone 40.0 27.16 ug/L 68 10-158 0 78 Acrylonitrile 60.0 43.67 ug/L 73 10-200 0 36 Benzene 20.0 17.56 ug/L 88 80-134 6 17 Bromochloromethane 20.0 19.49 ug/L 97 74-128 2 18 Bromodichloromethane 20.0 21.91 ug/L 110 72-129 7 16 Bromoform 20.0 23.11 ug/L 116 73-120 0 44 Bromomethane 20.0 10.62 ug/L 53 38-189 7 27 Carbon disulfide 20.0 17.40 ug/L 87 65-173 10 38 Carbon tetrachloride 20.0 26.28 ug/L 131 68-142 6 17 Chlorobenzene 20.0 18.14 ug/L 91 80-120 5 16 Chloroethane 20.0 14.23 ug/L 71 45-213 3 26 Chloroform 20.0 19.09 ug/L 95 78-138 4 17 Eurofins Raleigh Page 34 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 752-3101/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 3101 Chloromethane 20.0 12.29 ug/L 61 56-171 2 28 Analyte LCSD LCSD DUnitResultQualifier %Rec Spike Added %Rec Limits LimitRPD RPD cis-1,2-Dichloroethene 20.0 16.63 ug/L 83 69-120 3 18 cis-1,3-Dichloropropene 20.0 19.80 ug/L 99 63-125 5 17 Dibromochloromethane 20.0 20.43 ug/L 102 73-120 2 16 Dibromomethane 20.0 19.88 ug/L 99 76-124 7 15 Dichlorodifluoromethane 20.0 18.61 ug/L 93 25-161 6 48 Ethylbenzene 20.0 17.23 ug/L 86 68-124 5 16 Iodomethane 20.0 18.87 ug/L 94 34-140 10 15 Methylene Chloride 20.0 18.48 ug/L 92 68-128 4 17 Styrene 20.0 18.52 ug/L 93 73-120 0 23 Tetrachloroethene 20.0 22.34 ug/L 112 40-181 3 26 Toluene 20.0 17.76 ug/L 89 71-120 4 17 trans-1,2-Dichloroethene 20.0 17.32 ug/L 87 75-139 2 19 trans-1,3-Dichloropropene 20.0 22.87 ug/L 114 65-152 1 16 trans-1,4-Dichloro-2-butene 20.0 20.51 ug/L 103 10-142 3 28 Trichloroethene 20.0 20.51 ug/L 103 74-120 1 22 Trichlorofluoromethane 20.0 24.73 ug/L 124 68-183 2 22 Vinyl acetate 20.0 18.49 ug/L 92 10-198 2 21 Vinyl chloride 20.0 10.29 ug/L 51 49-150 6 27 Xylenes, Total 60.0 57.44 ug/L 96 77-121 4 16 4-Bromofluorobenzene (Surr)53 -136 Surrogate 94 LCSD LCSD Qualifier Limits%Recovery 80Dibromofluoromethane (Surr)67 -129 76Toluene-d8 (Surr)59 -134 Client Sample ID: Lab Control SampleLab Sample ID: MRL 752-3101/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 3101 1,1,1,2-Tetrachloroethane 1.00 1.303 ug/L 130 Analyte MRL MRL DUnitResultQualifier %Rec Spike Added %Rec Limits 1,1,1-Trichloroethane 1.00 1.375 ug/L 138 1,1,2,2-Tetrachloroethane 1.00 0.9814 J ug/L 98 1,1,2-Trichloroethane 1.00 1.173 ug/L 117 1,1-Dichloroethane 1.00 1.120 ug/L 112 1,1-Dichloroethene 1.00 0.9473 J ug/L 95 1,2,3-Trichloropropane 1.00 1.340 ug/L 134 1,2-Dibromo-3-Chloropropane 1.00 2.288 ug/L 229 1,2-Dibromoethane 1.00 1.103 ug/L 110 1,2-Dichlorobenzene 1.00 1.089 ug/L 109 1,2-Dichloroethane 1.00 1.476 ug/L 148 1,2-Dichloropropane 1.00 1.046 ug/L 105 1,4-Dichlorobenzene 1.00 1.409 ug/L 141 2-Butanone (MEK)2.00 <10.0 ug/L 402 2-Hexanone 2.00 1.142 J ug/L 57 4-Methyl-2-pentanone (MIBK)2.00 1.406 J ug/L 70 Acetone 2.00 <10.0 ug/L 10 Eurofins Raleigh Page 35 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: MRL 752-3101/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 3101 Acrylonitrile 5.00 3.688 J ug/L 74 Analyte MRL MRL DUnitResultQualifier %Rec Spike Added %Rec Limits Benzene 1.00 1.236 ug/L 124 Bromochloromethane 1.00 1.199 ug/L 120 Bromodichloromethane 1.00 1.430 ug/L 143 Bromoform 1.00 1.069 ug/L 107 Bromomethane 1.00 0.1546 J ug/L 15 Carbon disulfide 2.00 2.338 J ug/L 117 Carbon tetrachloride 1.00 1.587 ug/L 159 Chlorobenzene 1.00 1.175 ug/L 117 Chloroethane 1.00 0.9688 J ug/L 97 Chloroform 1.00 1.535 ug/L 154 Chloromethane 1.00 0.7065 J ug/L 71 cis-1,2-Dichloroethene 1.00 1.062 ug/L 106 cis-1,3-Dichloropropene 1.00 1.132 ug/L 113 Dibromochloromethane 1.00 1.218 ug/L 122 Dibromomethane 1.00 1.746 ug/L 175 Dichlorodifluoromethane 1.00 1.238 ug/L 124 Ethylbenzene 1.00 0.8383 J ug/L 84 Iodomethane 2.00 1.939 J ug/L 97 Methylene Chloride 1.00 1.896 ug/L 190 Styrene 1.00 0.6913 J ug/L 69 Tetrachloroethene 1.00 1.448 ug/L 145 Toluene 1.00 1.242 ug/L 124 trans-1,2-Dichloroethene 1.00 1.379 ug/L 138 trans-1,3-Dichloropropene 1.00 1.155 ug/L 115 trans-1,4-Dichloro-2-butene 1.00 <0.700 ug/L 54 Trichloroethene 1.00 1.395 ug/L 140 Trichlorofluoromethane 1.00 1.279 ug/L 128 Vinyl acetate 2.00 1.040 J ug/L 52 Vinyl chloride 1.00 0.5129 J ug/L 51 Xylenes, Total 3.00 2.992 J ug/L 100 4-Bromofluorobenzene (Surr)53 -136 Surrogate 88 MRL MRL Qualifier Limits%Recovery 80Dibromofluoromethane (Surr)67 -129 77Toluene-d8 (Surr)59 -134 Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 3101 1,1,1,2-Tetrachloroethane <0.170 20.0 21.46 ug/L 107 71-120 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,1,1-Trichloroethane <0.120 20.0 26.47 ug/L 132 72-143 1,1,2,2-Tetrachloroethane <0.280 20.0 15.96 ug/L 80 59-133 1,1,2-Trichloroethane <0.140 20.0 16.65 ug/L 83 67-120 1,1-Dichloroethane 0.359 J 20.0 19.62 ug/L 96 79-141 1,1-Dichloroethene <0.210 20.0 19.89 ug/L 99 75-133 Eurofins Raleigh Page 36 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 3101 1,2,3-Trichloropropane <0.490 20.0 19.68 ug/L 98 1-210 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 1,2-Dibromo-3-Chloropropane <0.480 20.0 18.99 ug/L 95 37-157 1,2-Dibromoethane <0.660 20.0 17.94 ug/L 90 66-123 1,2-Dichlorobenzene <0.190 20.0 17.08 ug/L 85 76-120 1,2-Dichloroethane <0.210 20.0 23.96 ug/L 120 72-151 1,2-Dichloropropane <0.100 20.0 16.43 ug/L 82 78-125 1,4-Dichlorobenzene <0.190 20.0 17.96 ug/L 90 76-122 2-Butanone (MEK)<10.0 40.0 31.28 ug/L 78 36-135 2-Hexanone <0.880 40.0 26.44 ug/L 66 36-191 4-Methyl-2-pentanone (MIBK)<1.10 40.0 29.17 ug/L 73 56-166 Acetone <10.0 40.0 31.57 ug/L 79 10-158 Acrylonitrile <3.50 60.0 45.40 ug/L 76 10-200 Benzene 0.507 J 20.0 19.10 ug/L 93 80-134 Bromochloromethane <0.480 20.0 19.36 ug/L 97 74-128 Bromodichloromethane <0.170 20.0 23.54 ug/L 118 72-129 Bromoform <0.220 20.0 22.85 ug/L 114 73-120 Bromomethane <0.140 20.0 11.70 ug/L 58 38-189 Carbon disulfide <1.50 20.0 20.84 ug/L 104 65-173 Carbon tetrachloride <0.170 F1 20.0 31.87 F1 ug/L 159 68-142 Chlorobenzene 1.07 20.0 19.74 ug/L 93 80-120 Chloroethane 0.791 J 20.0 16.04 ug/L 76 45-213 Chloroform <0.180 20.0 20.98 ug/L 105 78-138 Chloromethane <0.130 20.0 13.61 ug/L 68 56-171 cis-1,2-Dichloroethene 0.317 J 20.0 17.02 ug/L 84 69-120 cis-1,3-Dichloropropene <0.200 20.0 16.66 ug/L 83 63-125 Dibromochloromethane <0.170 20.0 20.79 ug/L 104 73-120 Dibromomethane <0.270 20.0 20.03 ug/L 100 76-124 Dichlorodifluoromethane <0.200 20.0 23.02 ug/L 115 25-161 Ethylbenzene <0.130 20.0 17.97 ug/L 90 68-124 Iodomethane <1.70 20.0 18.84 ug/L 94 34-140 Methylene Chloride <0.230 20.0 19.27 ug/L 96 68-128 Styrene <0.110 20.0 18.16 ug/L 91 73-120 Tetrachloroethene <0.170 20.0 24.78 ug/L 124 40-181 Toluene <0.140 20.0 18.49 ug/L 92 71-120 trans-1,2-Dichloroethene <0.210 20.0 18.87 ug/L 94 75-139 trans-1,3-Dichloropropene <0.150 20.0 22.21 ug/L 111 65-152 trans-1,4-Dichloro-2-butene <0.700 20.0 19.85 ug/L 99 10-142 Trichloroethene <0.150 20.0 22.36 ug/L 112 74-120 Trichlorofluoromethane <0.240 20.0 29.86 ug/L 149 68-183 Vinyl acetate <0.950 20.0 16.86 ug/L 84 10-198 Vinyl chloride <0.320 20.0 11.28 ug/L 56 49-150 Xylenes, Total <0.450 60.0 60.07 ug/L 100 77-121 4-Bromofluorobenzene (Surr)53 -136 Surrogate 96 MS MS Qualifier Limits%Recovery 83Dibromofluoromethane (Surr)67 -129 76Toluene-d8 (Surr)59 -134 Eurofins Raleigh Page 37 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 3101 1,1,1,2-Tetrachloroethane <0.170 20.0 19.45 ug/L 97 71-120 10 16 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD 1,1,1-Trichloroethane <0.120 20.0 24.34 ug/L 122 72-143 8 18 1,1,2,2-Tetrachloroethane <0.280 20.0 15.46 ug/L 77 59-133 3 16 1,1,2-Trichloroethane <0.140 20.0 17.64 ug/L 88 67-120 6 18 1,1-Dichloroethane 0.359 J 20.0 18.73 ug/L 92 79-141 5 19 1,1-Dichloroethene <0.210 20.0 18.60 ug/L 93 75-133 7 20 1,2,3-Trichloropropane <0.490 20.0 19.00 ug/L 95 1-210 4 17 1,2-Dibromo-3-Chloropropane <0.480 20.0 17.82 ug/L 89 37-157 6 18 1,2-Dibromoethane <0.660 20.0 17.30 ug/L 87 66-123 4 15 1,2-Dichlorobenzene <0.190 20.0 16.51 ug/L 83 76-120 3 16 1,2-Dichloroethane <0.210 20.0 24.07 ug/L 120 72-151 0 16 1,2-Dichloropropane <0.100 20.0 16.56 ug/L 83 78-125 1 19 1,4-Dichlorobenzene <0.190 20.0 17.32 ug/L 87 76-122 4 16 2-Butanone (MEK)<10.0 40.0 30.76 ug/L 77 36-135 2 19 2-Hexanone <0.880 40.0 25.69 ug/L 64 36-191 3 17 4-Methyl-2-pentanone (MIBK)<1.10 40.0 28.10 ug/L 70 56-166 4 19 Acetone <10.0 40.0 26.73 ug/L 67 10-158 17 78 Acrylonitrile <3.50 60.0 41.29 ug/L 69 10-200 9 36 Benzene 0.507 J 20.0 18.08 ug/L 88 80-134 5 17 Bromochloromethane <0.480 20.0 19.09 ug/L 95 74-128 1 18 Bromodichloromethane <0.170 20.0 23.19 ug/L 116 72-129 2 16 Bromoform <0.220 20.0 21.04 ug/L 105 73-120 8 44 Bromomethane <0.140 20.0 12.10 ug/L 61 38-189 3 27 Carbon disulfide <1.50 20.0 19.28 ug/L 96 65-173 8 38 Carbon tetrachloride <0.170 F1 20.0 29.78 F1 ug/L 149 68-142 7 17 Chlorobenzene 1.07 20.0 18.89 ug/L 89 80-120 4 16 Chloroethane 0.791 J 20.0 16.39 ug/L 78 45-213 2 26 Chloroform <0.180 20.0 19.66 ug/L 98 78-138 6 17 Chloromethane <0.130 20.0 14.63 ug/L 73 56-171 7 28 cis-1,2-Dichloroethene 0.317 J 20.0 16.53 ug/L 81 69-120 3 18 cis-1,3-Dichloropropene <0.200 20.0 17.22 ug/L 86 63-125 3 17 Dibromochloromethane <0.170 20.0 19.82 ug/L 99 73-120 5 16 Dibromomethane <0.270 20.0 20.96 ug/L 105 76-124 5 15 Dichlorodifluoromethane <0.200 20.0 24.71 ug/L 124 25-161 7 48 Ethylbenzene <0.130 20.0 16.72 ug/L 84 68-124 7 16 Iodomethane <1.70 20.0 18.53 ug/L 93 34-140 2 15 Methylene Chloride <0.230 20.0 17.23 ug/L 86 68-128 11 17 Styrene <0.110 20.0 17.04 ug/L 85 73-120 6 23 Tetrachloroethene <0.170 20.0 23.04 ug/L 115 40-181 7 26 Toluene <0.140 20.0 17.09 ug/L 85 71-120 8 17 trans-1,2-Dichloroethene <0.210 20.0 17.35 ug/L 87 75-139 8 19 trans-1,3-Dichloropropene <0.150 20.0 20.96 ug/L 105 65-152 6 16 trans-1,4-Dichloro-2-butene <0.700 20.0 18.46 ug/L 92 10-142 7 28 Trichloroethene <0.150 20.0 21.98 ug/L 110 74-120 2 22 Trichlorofluoromethane <0.240 20.0 30.74 ug/L 154 68-183 3 22 Vinyl acetate <0.950 20.0 16.21 ug/L 81 10-198 4 21 Vinyl chloride <0.320 20.0 13.05 ug/L 65 49-150 15 27 Xylenes, Total <0.450 60.0 57.06 ug/L 95 77-121 5 16 Eurofins Raleigh Page 38 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 3101 4-Bromofluorobenzene (Surr)53 -136 Surrogate 93 MSD MSD Qualifier Limits%Recovery 80Dibromofluoromethane (Surr)67 -129 76Toluene-d8 (Surr)59 -134 Client Sample ID: Method BlankLab Sample ID: MB 752-3113/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 3113 RL MDL 1,1,1,2-Tetrachloroethane <0.170 1.00 0.170 ug/L 06/03/23 04:42 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <0.120 0.1201.00 ug/L 06/03/23 04:42 11,1,1-Trichloroethane <0.280 0.2801.00 ug/L 06/03/23 04:42 11,1,2,2-Tetrachloroethane <0.140 0.1401.00 ug/L 06/03/23 04:42 11,1,2-Trichloroethane <0.130 0.1301.00 ug/L 06/03/23 04:42 11,1-Dichloroethane <0.210 0.2101.00 ug/L 06/03/23 04:42 11,1-Dichloroethene <0.490 0.4901.00 ug/L 06/03/23 04:42 11,2,3-Trichloropropane <0.480 0.4801.00 ug/L 06/03/23 04:42 11,2-Dibromo-3-Chloropropane <0.660 0.6601.00 ug/L 06/03/23 04:42 11,2-Dibromoethane <0.190 0.1901.00 ug/L 06/03/23 04:42 11,2-Dichlorobenzene <0.210 0.2101.00 ug/L 06/03/23 04:42 11,2-Dichloroethane <0.100 0.1001.00 ug/L 06/03/23 04:42 11,2-Dichloropropane <0.190 0.1901.00 ug/L 06/03/23 04:42 11,4-Dichlorobenzene <10.0 10.020.0 ug/L 06/03/23 04:42 12-Butanone (MEK) <0.880 0.8805.00 ug/L 06/03/23 04:42 12-Hexanone <1.10 1.105.00 ug/L 06/03/23 04:42 14-Methyl-2-pentanone (MIBK) <10.0 10.020.0 ug/L 06/03/23 04:42 1Acetone <3.50 3.5010.0 ug/L 06/03/23 04:42 1Acrylonitrile <0.150 0.1501.00 ug/L 06/03/23 04:42 1Benzene <0.480 0.4801.00 ug/L 06/03/23 04:42 1Bromochloromethane <0.170 0.1701.00 ug/L 06/03/23 04:42 1Bromodichloromethane <0.220 0.2201.00 ug/L 06/03/23 04:42 1Bromoform <0.140 0.1401.00 ug/L 06/03/23 04:42 1Bromomethane <1.50 1.505.00 ug/L 06/03/23 04:42 1Carbon disulfide <0.170 0.1701.00 ug/L 06/03/23 04:42 1Carbon tetrachloride <0.170 0.1701.00 ug/L 06/03/23 04:42 1Chlorobenzene <0.230 0.2301.00 ug/L 06/03/23 04:42 1Chloroethane <0.180 0.1801.00 ug/L 06/03/23 04:42 1Chloroform <0.130 0.1301.00 ug/L 06/03/23 04:42 1Chloromethane <0.150 0.1501.00 ug/L 06/03/23 04:42 1cis-1,2-Dichloroethene <0.200 0.2001.00 ug/L 06/03/23 04:42 1cis-1,3-Dichloropropene <0.170 0.1701.00 ug/L 06/03/23 04:42 1Dibromochloromethane <0.270 0.2701.00 ug/L 06/03/23 04:42 1Dibromomethane <0.200 0.2001.00 ug/L 06/03/23 04:42 1Dichlorodifluoromethane <0.130 0.1301.00 ug/L 06/03/23 04:42 1Ethylbenzene <1.70 1.705.00 ug/L 06/03/23 04:42 1Iodomethane 0.2518 J 0.2301.00 ug/L 06/03/23 04:42 1Methylene Chloride <0.110 0.1101.00 ug/L 06/03/23 04:42 1Styrene <0.170 0.1701.00 ug/L 06/03/23 04:42 1Tetrachloroethene Eurofins Raleigh Page 39 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Method BlankLab Sample ID: MB 752-3113/8 Matrix: Water Prep Type: Total/NA Analysis Batch: 3113 RL MDL Toluene <0.140 1.00 0.140 ug/L 06/03/23 04:42 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <0.210 0.2101.00 ug/L 06/03/23 04:42 1trans-1,2-Dichloroethene <0.150 0.1501.00 ug/L 06/03/23 04:42 1trans-1,3-Dichloropropene <0.700 0.7001.00 ug/L 06/03/23 04:42 1trans-1,4-Dichloro-2-butene <0.150 0.1501.00 ug/L 06/03/23 04:42 1Trichloroethene <0.240 0.2401.00 ug/L 06/03/23 04:42 1Trichlorofluoromethane <0.950 0.9505.00 ug/L 06/03/23 04:42 1Vinyl acetate <0.320 0.3201.00 ug/L 06/03/23 04:42 1Vinyl chloride <0.450 0.4503.00 ug/L 06/03/23 04:42 1Xylenes, Total 4-Bromofluorobenzene (Surr)93 53-136 06/03/23 04:42 1 MB MB Surrogate Dil FacPreparedAnalyzedQualifierLimits%Recovery 82 06/03/23 04:42 1Dibromofluoromethane (Surr)67-129 75 06/03/23 04:42 1Toluene-d8 (Surr)59-134 Client Sample ID: Lab Control SampleLab Sample ID: LCS 752-3113/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 3113 1,1,1,2-Tetrachloroethane 20.0 20.35 ug/L 102 71-120 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 1,1,1-Trichloroethane 20.0 21.63 ug/L 108 72-143 1,1,2,2-Tetrachloroethane 20.0 15.67 ug/L 78 59-133 1,1,2-Trichloroethane 20.0 17.15 ug/L 86 67-120 1,1-Dichloroethane 20.0 17.77 ug/L 89 79-141 1,1-Dichloroethene 20.0 16.46 ug/L 82 75-133 1,2,3-Trichloropropane 20.0 20.17 ug/L 101 69-127 1,2-Dibromo-3-Chloropropane 20.0 18.85 ug/L 94 37-157 1,2-Dibromoethane 20.0 17.78 ug/L 89 66-123 1,2-Dichlorobenzene 20.0 17.00 ug/L 85 76-120 1,2-Dichloroethane 20.0 24.09 ug/L 120 72-151 1,2-Dichloropropane 20.0 16.55 ug/L 83 78-125 1,4-Dichlorobenzene 20.0 16.84 ug/L 84 76-122 2-Butanone (MEK)40.0 36.34 ug/L 91 36-135 2-Hexanone 40.0 27.67 ug/L 69 36-191 4-Methyl-2-pentanone (MIBK)40.0 30.82 ug/L 77 56-166 Acetone 40.0 28.06 ug/L 70 10-158 Acrylonitrile 60.0 43.01 ug/L 72 10-200 Benzene 20.0 17.63 ug/L 88 80-134 Bromochloromethane 20.0 18.96 ug/L 95 74-128 Bromodichloromethane 20.0 22.08 ug/L 110 72-129 Bromoform 20.0 23.56 ug/L 118 73-120 Bromomethane 20.0 10.87 ug/L 54 38-189 Carbon disulfide 20.0 17.59 ug/L 88 65-173 Carbon tetrachloride 20.0 26.52 ug/L 133 68-142 Chlorobenzene 20.0 18.21 ug/L 91 80-120 Chloroethane 20.0 12.55 ug/L 63 45-213 Chloroform 20.0 19.15 ug/L 96 78-138 Eurofins Raleigh Page 40 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 752-3113/5 Matrix: Water Prep Type: Total/NA Analysis Batch: 3113 Chloromethane 20.0 12.35 ug/L 62 56-171 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits cis-1,2-Dichloroethene 20.0 15.61 ug/L 78 69-120 cis-1,3-Dichloropropene 20.0 19.16 ug/L 96 63-125 Dibromochloromethane 20.0 19.75 ug/L 99 73-120 Dibromomethane 20.0 20.30 ug/L 102 76-124 Dichlorodifluoromethane 20.0 17.63 ug/L 88 25-161 Ethylbenzene 20.0 16.43 ug/L 82 68-124 Iodomethane 20.0 19.17 ug/L 96 34-140 Methylene Chloride 20.0 18.08 ug/L 90 68-128 Styrene 20.0 17.67 ug/L 88 73-120 Tetrachloroethene 20.0 21.28 ug/L 106 40-181 Toluene 20.0 16.41 ug/L 82 71-120 trans-1,2-Dichloroethene 20.0 16.74 ug/L 84 75-139 trans-1,3-Dichloropropene 20.0 21.05 ug/L 105 65-152 trans-1,4-Dichloro-2-butene 20.0 18.54 ug/L 93 10-142 Trichloroethene 20.0 20.83 ug/L 104 74-120 Trichlorofluoromethane 20.0 23.29 ug/L 116 68-183 Vinyl acetate 20.0 16.96 ug/L 85 10-198 Vinyl chloride 20.0 10.08 ug/L 50 49-150 Xylenes, Total 60.0 55.75 ug/L 93 77-121 4-Bromofluorobenzene (Surr)53 -136 Surrogate 90 LCS LCS Qualifier Limits%Recovery 78Dibromofluoromethane (Surr)67 -129 77Toluene-d8 (Surr)59 -134 Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 752-3113/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 3113 1,1,1,2-Tetrachloroethane 20.0 23.20 ug/L 116 71-120 13 16 Analyte LCSD LCSD DUnitResultQualifier %Rec Spike Added %Rec Limits LimitRPD RPD 1,1,1-Trichloroethane 20.0 23.63 ug/L 118 72-143 9 18 1,1,2,2-Tetrachloroethane 20.0 16.14 ug/L 81 59-133 3 16 1,1,2-Trichloroethane 20.0 17.52 ug/L 88 67-120 2 18 1,1-Dichloroethane 20.0 18.61 ug/L 93 79-141 5 19 1,1-Dichloroethene 20.0 18.50 ug/L 93 75-133 12 20 1,2,3-Trichloropropane 20.0 19.02 ug/L 95 69-127 6 17 1,2-Dibromo-3-Chloropropane 20.0 18.83 ug/L 94 37-157 0 18 1,2-Dibromoethane 20.0 18.36 ug/L 92 66-123 3 15 1,2-Dichlorobenzene 20.0 17.02 ug/L 85 76-120 0 16 1,2-Dichloroethane 20.0 24.31 ug/L 122 72-151 1 16 1,2-Dichloropropane 20.0 17.42 ug/L 87 78-125 5 19 1,4-Dichlorobenzene 20.0 17.56 ug/L 88 76-122 4 16 2-Butanone (MEK)40.0 36.97 ug/L 92 36-135 2 19 2-Hexanone 40.0 29.77 ug/L 74 36-191 7 17 4-Methyl-2-pentanone (MIBK)40.0 31.50 ug/L 79 56-166 2 19 Acetone 40.0 34.65 ug/L 87 10-158 21 78 Eurofins Raleigh Page 41 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control Sample DupLab Sample ID: LCSD 752-3113/6 Matrix: Water Prep Type: Total/NA Analysis Batch: 3113 Acrylonitrile 60.0 47.38 ug/L 79 10-200 10 36 Analyte LCSD LCSD DUnitResultQualifier %Rec Spike Added %Rec Limits LimitRPD RPD Benzene 20.0 18.06 ug/L 90 80-134 2 17 Bromochloromethane 20.0 20.04 ug/L 100 74-128 6 18 Bromodichloromethane 20.0 22.76 ug/L 114 72-129 3 16 Bromoform 20.0 23.97 ug/L 120 73-120 2 44 Bromomethane 20.0 11.83 ug/L 59 38-189 9 27 Carbon disulfide 20.0 18.84 ug/L 94 65-173 7 38 Carbon tetrachloride 20.0 27.91 ug/L 140 68-142 5 17 Chlorobenzene 20.0 19.18 ug/L 96 80-120 5 16 Chloroethane 20.0 14.28 ug/L 71 45-213 13 26 Chloroform 20.0 20.51 ug/L 103 78-138 7 17 Chloromethane 20.0 13.61 ug/L 68 56-171 10 28 cis-1,2-Dichloroethene 20.0 16.88 ug/L 84 69-120 8 18 cis-1,3-Dichloropropene 20.0 19.00 ug/L 95 63-125 1 17 Dibromochloromethane 20.0 20.43 ug/L 102 73-120 3 16 Dibromomethane 20.0 20.71 ug/L 104 76-124 2 15 Dichlorodifluoromethane 20.0 21.26 ug/L 106 25-161 19 48 Ethylbenzene 20.0 17.64 ug/L 88 68-124 7 16 Iodomethane 20.0 20.25 ug/L 101 34-140 5 15 Methylene Chloride 20.0 19.60 ug/L 98 68-128 8 17 Styrene 20.0 18.47 ug/L 92 73-120 4 23 Tetrachloroethene 20.0 22.09 ug/L 110 40-181 4 26 Toluene 20.0 17.72 ug/L 89 71-120 8 17 trans-1,2-Dichloroethene 20.0 17.76 ug/L 89 75-139 6 19 trans-1,3-Dichloropropene 20.0 21.30 ug/L 106 65-152 1 16 trans-1,4-Dichloro-2-butene 20.0 19.15 ug/L 96 10-142 3 28 Trichloroethene 20.0 21.60 ug/L 108 74-120 4 22 Trichlorofluoromethane 20.0 26.84 ug/L 134 68-183 14 22 Vinyl acetate 20.0 18.85 ug/L 94 10-198 11 21 Vinyl chloride 20.0 11.50 ug/L 58 49-150 13 27 Xylenes, Total 60.0 59.15 ug/L 99 77-121 6 16 4-Bromofluorobenzene (Surr)53 -136 Surrogate 90 LCSD LCSD Qualifier Limits%Recovery 78Dibromofluoromethane (Surr)67 -129 75Toluene-d8 (Surr)59 -134 Client Sample ID: Lab Control SampleLab Sample ID: MRL 752-3113/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 3113 1,1,1,2-Tetrachloroethane 1.00 1.249 ug/L 125 Analyte MRL MRL DUnitResultQualifier %Rec Spike Added %Rec Limits 1,1,1-Trichloroethane 1.00 1.437 ug/L 144 1,1,2,2-Tetrachloroethane 1.00 0.9843 J ug/L 98 1,1,2-Trichloroethane 1.00 1.079 ug/L 108 1,1-Dichloroethane 1.00 1.066 ug/L 107 1,1-Dichloroethene 1.00 1.028 ug/L 103 Eurofins Raleigh Page 42 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8260D - Volatile Organic Compounds by GC/MS (Continued) Client Sample ID: Lab Control SampleLab Sample ID: MRL 752-3113/4 Matrix: Water Prep Type: Total/NA Analysis Batch: 3113 1,2,3-Trichloropropane 1.00 1.244 ug/L 124 Analyte MRL MRL DUnitResultQualifier %Rec Spike Added %Rec Limits 1,2-Dibromo-3-Chloropropane 1.00 1.746 ug/L 175 1,2-Dibromoethane 1.00 1.047 ug/L 105 1,2-Dichlorobenzene 1.00 1.049 ug/L 105 1,2-Dichloroethane 1.00 1.409 ug/L 141 1,2-Dichloropropane 1.00 1.011 ug/L 101 1,4-Dichlorobenzene 1.00 1.126 ug/L 113 2-Butanone (MEK)2.00 <10.0 ug/L 367 2-Hexanone 2.00 1.209 J ug/L 60 4-Methyl-2-pentanone (MIBK)2.00 1.394 J ug/L 70 Acetone 2.00 <10.0 ug/L 84 Acrylonitrile 5.00 <3.50 ug/L 62 Benzene 1.00 1.124 ug/L 112 Bromochloromethane 1.00 1.232 ug/L 123 Bromodichloromethane 1.00 1.484 ug/L 148 Bromoform 1.00 1.268 ug/L 127 Bromomethane 1.00 0.2786 J ug/L 28 Carbon disulfide 2.00 2.237 J ug/L 112 Carbon tetrachloride 1.00 1.491 ug/L 149 Chlorobenzene 1.00 1.232 ug/L 123 Chloroethane 1.00 0.9606 J ug/L 96 Chloroform 1.00 1.490 ug/L 149 Chloromethane 1.00 0.8534 J ug/L 85 cis-1,2-Dichloroethene 1.00 1.028 ug/L 103 cis-1,3-Dichloropropene 1.00 0.9670 J ug/L 97 Dibromochloromethane 1.00 1.041 ug/L 104 Dibromomethane 1.00 1.385 ug/L 139 Dichlorodifluoromethane 1.00 1.350 ug/L 135 Ethylbenzene 1.00 0.8276 J ug/L 83 Iodomethane 2.00 1.860 J ug/L 93 Methylene Chloride 1.00 1.854 ug/L 185 Styrene 1.00 0.6828 J ug/L 68 Tetrachloroethene 1.00 1.128 ug/L 113 Toluene 1.00 1.228 ug/L 123 trans-1,2-Dichloroethene 1.00 0.6794 J ug/L 68 trans-1,3-Dichloropropene 1.00 0.9969 J ug/L 100 trans-1,4-Dichloro-2-butene 1.00 1.054 ug/L 105 Trichloroethene 1.00 1.466 ug/L 147 Trichlorofluoromethane 1.00 1.181 ug/L 118 Vinyl acetate 2.00 0.9580 J ug/L 48 Vinyl chloride 1.00 0.6743 J ug/L 67 Xylenes, Total 3.00 2.914 J ug/L 97 4-Bromofluorobenzene (Surr)53 -136 Surrogate 89 MRL MRL Qualifier Limits%Recovery 83Dibromofluoromethane (Surr)67 -129 77Toluene-d8 (Surr)59 -134 Eurofins Raleigh Page 43 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8270E - Semivolatile Organic Compounds (GC/MS) Client Sample ID: Method BlankLab Sample ID: MB 680-780784/1-A Matrix: Water Prep Type: Total/NA Analysis Batch: 780901 Prep Batch: 780784 RL MDL Diethyl phthalate <2.20 10.0 2.20 ug/L 05/27/23 12:41 05/29/23 17:10 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier 2,4,6-Tribromophenol (Surr)65 30-130 05/29/23 17:10 1 MB MB Surrogate 05/27/23 12:41 Dil FacPreparedAnalyzedQualifierLimits%Recovery 71 05/27/23 12:41 05/29/23 17:10 12-Fluorobiphenyl 25-130 35 05/27/23 12:41 05/29/23 17:10 12-Fluorophenol (Surr)10-130 74 05/27/23 12:41 05/29/23 17:10 1Nitrobenzene-d5 (Surr)30-130 23 05/27/23 12:41 05/29/23 17:10 1Phenol-d5 (Surr)10-130 76 05/27/23 12:41 05/29/23 17:10 1Terphenyl-d14 (Surr)35-131 Client Sample ID: Lab Control SampleLab Sample ID: LCS 680-780784/2-A Matrix: Water Prep Type: Total/NA Analysis Batch: 780901 Prep Batch: 780784 Diethyl phthalate 200 203.1 ug/L 102 36-130 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits 2,4,6-Tribromophenol (Surr)30 -130 Surrogate 64 LCS LCS Qualifier Limits%Recovery 672-Fluorobiphenyl 25 -130 322-Fluorophenol (Surr)10 -130 68Nitrobenzene-d5 (Surr)30 -130 23Phenol-d5 (Surr)10 -130 82Terphenyl-d14 (Surr)35 -131 Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 780901 Prep Batch: 780784 Diethyl phthalate <2.20 193 200.2 ug/L 104 36-130 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits 2,4,6-Tribromophenol (Surr)30 -130 Surrogate 67 MS MS Qualifier Limits%Recovery 722-Fluorobiphenyl 25 -130 342-Fluorophenol (Surr)10 -130 73Nitrobenzene-d5 (Surr)30 -130 23Phenol-d5 (Surr)10 -130 82Terphenyl-d14 (Surr)35 -131 Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 780901 Prep Batch: 780784 Diethyl phthalate <2.20 196 181.0 ug/L 92 36-130 10 50 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Eurofins Raleigh Page 44 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 8270E - Semivolatile Organic Compounds (GC/MS) (Continued) Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 780901 Prep Batch: 780784 2,4,6-Tribromophenol (Surr)30 -130 Surrogate 58 MSD MSD Qualifier Limits%Recovery 612-Fluorobiphenyl 25 -130 302-Fluorophenol (Surr)10 -130 61Nitrobenzene-d5 (Surr)30 -130 22Phenol-d5 (Surr)10 -130 77Terphenyl-d14 (Surr)35 -131 Method: 6010D - Metals (ICP) Client Sample ID: Method BlankLab Sample ID: MB 680-780920/1-A Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781123 Prep Batch: 780920 RL MDL Arsenic <6.40 20.0 6.40 ug/L 05/30/23 06:22 05/30/23 15:21 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <4.40 4.4010.0 ug/L 05/30/23 06:22 05/30/23 15:21 1Barium <0.300 0.3004.00 ug/L 05/30/23 06:22 05/30/23 15:21 1Beryllium <0.440 0.4405.00 ug/L 05/30/23 06:22 05/30/23 15:21 1Cadmium <1.10 1.1010.0 ug/L 05/30/23 06:22 05/30/23 15:21 1Chromium <1.40 1.4010.0 ug/L 05/30/23 06:22 05/30/23 15:21 1Cobalt <3.20 3.2020.0 ug/L 05/30/23 06:22 05/30/23 15:21 1Copper <6.60 6.6010.0 ug/L 05/30/23 06:22 05/30/23 15:21 1Lead <3.30 3.3040.0 ug/L 05/30/23 06:22 05/30/23 15:21 1Nickel <10.0 10.020.0 ug/L 05/30/23 06:22 05/30/23 15:21 1Selenium <1.50 1.5010.0 ug/L 05/30/23 06:22 05/30/23 15:21 1Silver <1.00 1.0010.0 ug/L 05/30/23 06:22 05/30/23 15:21 1Vanadium <8.70 8.7020.0 ug/L 05/30/23 06:22 05/30/23 15:21 1Zinc Client Sample ID: Lab Control SampleLab Sample ID: LCS 680-780920/2-A Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781123 Prep Batch: 780920 Arsenic 100 98.47 ug/L 98 80-120 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Barium 100 99.97 ug/L 100 80-120 Beryllium 50.0 51.28 ug/L 103 80-120 Cadmium 50.0 51.04 ug/L 102 80-120 Chromium 100 101.0 ug/L 101 80-120 Cobalt 50.0 51.61 ug/L 103 80-120 Copper 100 104.3 ug/L 104 80-120 Lead 500 481.6 ug/L 96 80-120 Nickel 100 99.85 ug/L 100 80-120 Selenium 100 93.97 ug/L 94 80-120 Silver 50.0 46.94 ug/L 94 80-120 Vanadium 100 97.86 ug/L 98 80-120 Zinc 100 104.2 ug/L 104 80-120 Eurofins Raleigh Page 45 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 6010D - Metals (ICP) (Continued) Client Sample ID: Method BlankLab Sample ID: MB 680-780926/1-A Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781123 Prep Batch: 780926 RL MDL Arsenic <6.40 20.0 6.40 ug/L 05/30/23 06:51 05/30/23 14:28 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <4.40 4.4010.0 ug/L 05/30/23 06:51 05/30/23 14:28 1Barium <0.300 0.3004.00 ug/L 05/30/23 06:51 05/30/23 14:28 1Beryllium <0.440 0.4405.00 ug/L 05/30/23 06:51 05/30/23 14:28 1Cadmium <1.10 1.1010.0 ug/L 05/30/23 06:51 05/30/23 14:28 1Chromium <1.40 1.4010.0 ug/L 05/30/23 06:51 05/30/23 14:28 1Cobalt <3.20 3.2020.0 ug/L 05/30/23 06:51 05/30/23 14:28 1Copper <6.60 6.6010.0 ug/L 05/30/23 06:51 05/30/23 14:28 1Lead <3.30 3.3040.0 ug/L 05/30/23 06:51 05/30/23 14:28 1Nickel <10.0 10.020.0 ug/L 05/30/23 06:51 05/30/23 14:28 1Selenium <1.50 1.5010.0 ug/L 05/30/23 06:51 05/30/23 14:28 1Silver <1.00 1.0010.0 ug/L 05/30/23 06:51 05/30/23 14:28 1Vanadium <8.70 8.7020.0 ug/L 05/30/23 06:51 05/30/23 14:28 1Zinc Client Sample ID: Lab Control SampleLab Sample ID: LCS 680-780926/2-A Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781123 Prep Batch: 780926 Arsenic 100 99.08 ug/L 99 80-120 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Barium 100 102.1 ug/L 102 80-120 Beryllium 50.0 51.71 ug/L 103 80-120 Cadmium 50.0 51.35 ug/L 103 80-120 Chromium 100 100.8 ug/L 101 80-120 Cobalt 50.0 51.40 ug/L 103 80-120 Copper 100 103.4 ug/L 103 80-120 Lead 500 484.1 ug/L 97 80-120 Nickel 100 98.99 ug/L 99 80-120 Selenium 100 91.18 ug/L 91 80-120 Silver 50.0 46.87 ug/L 94 80-120 Vanadium 100 97.41 ug/L 97 80-120 Zinc 100 99.04 ug/L 99 80-120 Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MS Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781123 Prep Batch: 780926 Arsenic <6.40 100 99.18 ug/L 99 75-125 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Barium <4.40 100 103.2 ug/L 103 75-125 Beryllium <0.300 50.0 52.86 ug/L 106 75-125 Cadmium 0.500 J 50.0 52.59 ug/L 104 75-125 Chromium <1.10 100 103.4 ug/L 103 75-125 Cobalt 10.9 50.0 61.98 ug/L 102 75-125 Copper <3.20 100 104.6 ug/L 105 75-125 Lead <6.60 500 489.6 ug/L 98 75-125 Nickel <3.30 100 101.7 ug/L 102 75-125 Selenium <10.0 100 94.21 ug/L 94 75-125 Silver <1.50 50.0 48.15 ug/L 96 75-125 Eurofins Raleigh Page 46 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 6010D - Metals (ICP) (Continued) Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MS Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781123 Prep Batch: 780926 Vanadium <1.00 100 100.6 ug/L 101 75-125 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Zinc <8.70 100 105.8 ug/L 106 75-125 Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MSD Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781123 Prep Batch: 780926 Arsenic <6.40 100 98.56 ug/L 99 75-125 1 20 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Barium <4.40 100 102.4 ug/L 102 75-125 1 20 Beryllium <0.300 50.0 52.51 ug/L 105 75-125 1 20 Cadmium 0.500 J 50.0 52.03 ug/L 103 75-125 1 20 Chromium <1.10 100 102.3 ug/L 102 75-125 1 20 Cobalt 10.9 50.0 62.77 ug/L 104 75-125 1 20 Copper <3.20 100 103.6 ug/L 104 75-125 1 20 Lead <6.60 500 486.2 ug/L 97 75-125 1 20 Nickel <3.30 100 101.0 ug/L 101 75-125 1 20 Selenium <10.0 100 94.27 ug/L 94 75-125 0 20 Silver <1.50 50.0 47.66 ug/L 95 75-125 1 20 Vanadium <1.00 100 98.92 ug/L 99 75-125 2 20 Zinc <8.70 100 105.1 ug/L 105 75-125 1 20 Method: 6020B - Metals (ICP/MS) Client Sample ID: Method BlankLab Sample ID: MB 680-780921/1-A Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781125 Prep Batch: 780921 RL MDL Antimony <0.340 5.00 0.340 ug/L 05/30/23 06:22 05/30/23 21:49 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <0.260 0.2601.00 ug/L 05/30/23 06:22 05/30/23 21:49 1Thallium Client Sample ID: Lab Control SampleLab Sample ID: LCS 680-780921/2-A Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781125 Prep Batch: 780921 Antimony 50.0 52.54 ug/L 105 80-120 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Thallium 50.0 53.69 ug/L 107 80-120 Client Sample ID: Method BlankLab Sample ID: MB 680-780928/1-A Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781125 Prep Batch: 780928 RL MDL Antimony <0.340 5.00 0.340 ug/L 05/30/23 06:51 05/30/23 20:24 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier <0.260 0.2601.00 ug/L 05/30/23 06:51 05/30/23 20:24 1Thallium Eurofins Raleigh Page 47 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Sample Results Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method: 6020B - Metals (ICP/MS) (Continued) Client Sample ID: Lab Control SampleLab Sample ID: LCS 680-780928/2-A Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781125 Prep Batch: 780928 Antimony 50.0 51.99 ug/L 104 80-120 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Thallium 50.0 53.69 ug/L 107 80-120 Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MS Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781125 Prep Batch: 780928 Antimony <0.340 50.0 54.60 ug/L 109 75-125 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Thallium <0.260 50.0 56.58 ug/L 113 75-125 Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MSD Matrix: Water Prep Type: Total Recoverable Analysis Batch: 781125 Prep Batch: 780928 Antimony <0.340 50.0 52.39 ug/L 105 75-125 4 20 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Thallium <0.260 50.0 54.64 ug/L 109 75-125 3 20 Method: 7470A - Mercury (CVAA) Client Sample ID: Method BlankLab Sample ID: MB 680-781000/1-A Matrix: Water Prep Type: Total/NA Analysis Batch: 781270 Prep Batch: 781000 RL MDL Mercury <0.0800 0.200 0.0800 ug/L 05/30/23 10:34 05/31/23 09:40 1 MB MB Analyte Dil FacAnalyzedPreparedDUnitResultQualifier Client Sample ID: Lab Control SampleLab Sample ID: LCS 680-781000/2-A Matrix: Water Prep Type: Total/NA Analysis Batch: 781270 Prep Batch: 781000 Mercury 2.50 2.521 ug/L 101 80-120 Analyte LCS LCS DUnitResultQualifier %Rec Spike Added %Rec Limits Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MS Matrix: Water Prep Type: Total/NA Analysis Batch: 781270 Prep Batch: 781000 Mercury <0.0800 F1 1.00 0.6225 F1 ug/L 62 80-120 Analyte MS MS DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits Client Sample ID: 7601-MW7Lab Sample ID: 752-7507-3 MSD Matrix: Water Prep Type: Total/NA Analysis Batch: 781270 Prep Batch: 781000 Mercury <0.0800 F1 1.00 0.5713 F1 ug/L 57 80-120 9 20 Analyte MSD MSD DUnitResultQualifier %Rec Spike Added Sample Result Sample Qualifier %Rec Limits LimitRPD RPD Eurofins Raleigh Page 48 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill GC/MS VOA Analysis Batch: 3101 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D752-7507-1 7601-MW10S Total/NA Water 8260D752-7507-3 7601-MW7 Total/NA Water 8260D752-7507-10 7601-Trip Blank Total/NA Water 8260DMB 752-3101/8 Method Blank Total/NA Water 8260DLCS 752-3101/5 Lab Control Sample Total/NA Water 8260DLCSD 752-3101/6 Lab Control Sample Dup Total/NA Water 8260DMRL 752-3101/4 Lab Control Sample Total/NA Water 8260D752-7507-3 MS 7601-MW7 Total/NA Water 8260D752-7507-3 MSD 7601-MW7 Total/NA Analysis Batch: 3113 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260D752-7507-2 7601-MW6 Total/NA Water 8260D752-7507-4 7601-MW8 Total/NA Water 8260D752-7507-5 7601-MW9 Total/NA Water 8260D752-7507-6 7601-SW1 Total/NA Water 8260D752-7507-7 7601-SW2 Total/NA Water 8260D752-7507-8 7601-SW3 Total/NA Water 8260D752-7507-9 7601-SW4 Total/NA Water 8260DMB 752-3113/8 Method Blank Total/NA Water 8260DLCS 752-3113/5 Lab Control Sample Total/NA Water 8260DLCSD 752-3113/6 Lab Control Sample Dup Total/NA Water 8260DMRL 752-3113/4 Lab Control Sample Total/NA Analysis Batch: 781127 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260 SIM752-7507-1 7601-MW10S Total/NA Water 8260 SIM752-7507-3 7601-MW7 Total/NA Water 8260 SIM752-7507-4 7601-MW8 Total/NA Water 8260 SIM752-7507-6 7601-SW1 Total/NA Water 8260 SIM752-7507-7 7601-SW2 Total/NA Water 8260 SIM752-7507-8 7601-SW3 Total/NA Water 8260 SIM752-7507-9 7601-SW4 Total/NA Water 8260 SIMMB 680-781127/6 Method Blank Total/NA Water 8260 SIMLCS 680-781127/20 Lab Control Sample Total/NA Water 8260 SIMLCSD 680-781127/4 Lab Control Sample Dup Total/NA Water 8260 SIM752-7507-3 MS 7601-MW7 Total/NA Water 8260 SIM752-7507-3 MSD 7601-MW7 Total/NA Analysis Batch: 781391 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8260 SIM752-7507-2 7601-MW6 Total/NA Water 8260 SIM752-7507-5 7601-MW9 Total/NA Water 8260 SIMMB 680-781391/6 Method Blank Total/NA Water 8260 SIMLCS 680-781391/3 Lab Control Sample Total/NA Water 8260 SIMLCSD 680-781391/4 Lab Control Sample Dup Total/NA Water 8260 SIM752-7507-5 MS 7601-MW9 Total/NA Water 8260 SIM752-7507-5 MSD 7601-MW9 Total/NA Eurofins Raleigh Page 49 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill GC/MS Semi VOA Prep Batch: 780784 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 3510C752-7507-1 7601-MW10S Total/NA Water 3510C752-7507-2 7601-MW6 Total/NA Water 3510C752-7507-3 7601-MW7 Total/NA Water 3510C752-7507-4 7601-MW8 Total/NA Water 3510C752-7507-5 7601-MW9 Total/NA Water 3510CMB 680-780784/1-A Method Blank Total/NA Water 3510CLCS 680-780784/2-A Lab Control Sample Total/NA Water 3510C752-7507-3 MS 7601-MW7 Total/NA Water 3510C752-7507-3 MSD 7601-MW7 Total/NA Analysis Batch: 780901 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 8270E 780784752-7507-1 7601-MW10S Total/NA Water 8270E 780784752-7507-2 7601-MW6 Total/NA Water 8270E 780784752-7507-3 7601-MW7 Total/NA Water 8270E 780784752-7507-4 7601-MW8 Total/NA Water 8270E 780784752-7507-5 7601-MW9 Total/NA Water 8270E 780784MB 680-780784/1-A Method Blank Total/NA Water 8270E 780784LCS 680-780784/2-A Lab Control Sample Total/NA Water 8270E 780784752-7507-3 MS 7601-MW7 Total/NA Water 8270E 780784752-7507-3 MSD 7601-MW7 Total/NA Metals Prep Batch: 780920 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 3005A752-7507-1 7601-MW10S Total Recoverable Water 3005A752-7507-2 7601-MW6 Total Recoverable Water 3005A752-7507-6 7601-SW1 Total Recoverable Water 3005A752-7507-7 7601-SW2 Total Recoverable Water 3005A752-7507-8 7601-SW3 Total Recoverable Water 3005A752-7507-9 7601-SW4 Total Recoverable Water 3005AMB 680-780920/1-A Method Blank Total Recoverable Water 3005ALCS 680-780920/2-A Lab Control Sample Total Recoverable Prep Batch: 780921 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 3005A752-7507-1 7601-MW10S Total Recoverable Water 3005A752-7507-2 7601-MW6 Total Recoverable Water 3005A752-7507-6 7601-SW1 Total Recoverable Water 3005A752-7507-7 7601-SW2 Total Recoverable Water 3005A752-7507-8 7601-SW3 Total Recoverable Water 3005A752-7507-9 7601-SW4 Total Recoverable Water 3005AMB 680-780921/1-A Method Blank Total Recoverable Water 3005ALCS 680-780921/2-A Lab Control Sample Total Recoverable Prep Batch: 780926 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 3005A752-7507-3 7601-MW7 Total Recoverable Water 3005A752-7507-4 7601-MW8 Total Recoverable Water 3005A752-7507-5 7601-MW9 Total Recoverable Eurofins Raleigh Page 50 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Metals (Continued) Prep Batch: 780926 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 3005AMB 680-780926/1-A Method Blank Total Recoverable Water 3005ALCS 680-780926/2-A Lab Control Sample Total Recoverable Water 3005A752-7507-3 MS 7601-MW7 Total Recoverable Water 3005A752-7507-3 MSD 7601-MW7 Total Recoverable Prep Batch: 780928 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 3005A752-7507-3 7601-MW7 Total Recoverable Water 3005A752-7507-4 7601-MW8 Total Recoverable Water 3005A752-7507-5 7601-MW9 Total Recoverable Water 3005AMB 680-780928/1-A Method Blank Total Recoverable Water 3005ALCS 680-780928/2-A Lab Control Sample Total Recoverable Water 3005A752-7507-3 MS 7601-MW7 Total Recoverable Water 3005A752-7507-3 MSD 7601-MW7 Total Recoverable Prep Batch: 781000 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 7470A752-7507-1 7601-MW10S Total/NA Water 7470A752-7507-2 7601-MW6 Total/NA Water 7470A752-7507-3 7601-MW7 Total/NA Water 7470A752-7507-4 7601-MW8 Total/NA Water 7470A752-7507-5 7601-MW9 Total/NA Water 7470AMB 680-781000/1-A Method Blank Total/NA Water 7470ALCS 680-781000/2-A Lab Control Sample Total/NA Water 7470A752-7507-3 MS 7601-MW7 Total/NA Water 7470A752-7507-3 MSD 7601-MW7 Total/NA Analysis Batch: 781123 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 6010D 780920752-7507-1 7601-MW10S Total Recoverable Water 6010D 780920752-7507-2 7601-MW6 Total Recoverable Water 6010D 780926752-7507-3 7601-MW7 Total Recoverable Water 6010D 780926752-7507-4 7601-MW8 Total Recoverable Water 6010D 780926752-7507-5 7601-MW9 Total Recoverable Water 6010D 780920752-7507-6 7601-SW1 Total Recoverable Water 6010D 780920752-7507-7 7601-SW2 Total Recoverable Water 6010D 780920752-7507-8 7601-SW3 Total Recoverable Water 6010D 780920752-7507-9 7601-SW4 Total Recoverable Water 6010D 780920MB 680-780920/1-A Method Blank Total Recoverable Water 6010D 780926MB 680-780926/1-A Method Blank Total Recoverable Water 6010D 780920LCS 680-780920/2-A Lab Control Sample Total Recoverable Water 6010D 780926LCS 680-780926/2-A Lab Control Sample Total Recoverable Water 6010D 780926752-7507-3 MS 7601-MW7 Total Recoverable Water 6010D 780926752-7507-3 MSD 7601-MW7 Total Recoverable Analysis Batch: 781125 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 6020B 780921752-7507-1 7601-MW10S Total Recoverable Water 6020B 780921752-7507-2 7601-MW6 Total Recoverable Water 6020B 780928752-7507-3 7601-MW7 Total Recoverable Water 6020B 780928752-7507-4 7601-MW8 Total Recoverable Eurofins Raleigh Page 51 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 QC Association Summary Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Metals (Continued) Analysis Batch: 781125 (Continued) Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 6020B 780928752-7507-5 7601-MW9 Total Recoverable Water 6020B 780921752-7507-6 7601-SW1 Total Recoverable Water 6020B 780921752-7507-7 7601-SW2 Total Recoverable Water 6020B 780921752-7507-8 7601-SW3 Total Recoverable Water 6020B 780921752-7507-9 7601-SW4 Total Recoverable Water 6020B 780921MB 680-780921/1-A Method Blank Total Recoverable Water 6020B 780928MB 680-780928/1-A Method Blank Total Recoverable Water 6020B 780921LCS 680-780921/2-A Lab Control Sample Total Recoverable Water 6020B 780928LCS 680-780928/2-A Lab Control Sample Total Recoverable Water 6020B 780928752-7507-3 MS 7601-MW7 Total Recoverable Water 6020B 780928752-7507-3 MSD 7601-MW7 Total Recoverable Analysis Batch: 781270 Lab Sample ID Client Sample ID Prep Type Matrix Method Prep Batch Water 7470A 781000752-7507-1 7601-MW10S Total/NA Water 7470A 781000752-7507-2 7601-MW6 Total/NA Water 7470A 781000752-7507-3 7601-MW7 Total/NA Water 7470A 781000752-7507-4 7601-MW8 Total/NA Water 7470A 781000752-7507-5 7601-MW9 Total/NA Water 7470A 781000MB 680-781000/1-A Method Blank Total/NA Water 7470A 781000LCS 680-781000/2-A Lab Control Sample Total/NA Water 7470A 781000752-7507-3 MS 7601-MW7 Total/NA Water 7470A 781000752-7507-3 MSD 7601-MW7 Total/NA Eurofins Raleigh Page 52 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: WSP USA Inc Job ID: 752-7507-1 Project/Site: Randolph County Landfill Client Sample ID: 7601-MW10S Lab Sample ID: 752-7507-1 Matrix: WaterDate Collected: 05/22/23 14:45 Date Received: 05/25/23 10:00 Analysis 8260 SIM NTA1781127 EET SAV Type Batch Batch MethodPrep Type LabAnalystRun Prepared or Analyzed Batch Number Dilution Factor Total/NA 05/31/23 14:26 Analysis 8260D 1 3101 RY EET ESCTotal/NA 06/02/23 19:51 Prep 3510C 780784 MR EET SAVTotal/NA 05/27/23 12:41 Analysis 8270E 1 780901 T1C EET SAVTotal/NA 05/29/23 22:19 Prep 3005A 780920 RR EET SAVTotal Recoverable 05/30/23 06:22 Analysis 6010D 1 781123 BJB EET SAVTotal Recoverable 05/30/23 15:44 Prep 3005A 780921 RR EET SAVTotal Recoverable 05/30/23 06:22 Analysis 6020B 1 781125 BJB EET SAVTotal Recoverable 05/30/23 23:06 Prep 7470A 781000 JKL EET SAVTotal/NA 05/30/23 10:34 Analysis 7470A 1 781270 JKL EET SAVTotal/NA 05/31/23 09:43 Client Sample ID: 7601-MW6 Lab Sample ID: 752-7507-2 Matrix: WaterDate Collected: 05/23/23 11:15 Date Received: 05/25/23 10:00 Analysis 8260 SIM NTA1781391 EET SAV Type Batch Batch MethodPrep Type LabAnalystRun Prepared or Analyzed Batch Number Dilution Factor Total/NA 06/01/23 15:40 Analysis 8260D 1 3113 RY EET ESCTotal/NA 06/03/23 06:11 Prep 3510C 780784 MR EET SAVTotal/NA 05/27/23 12:41 Analysis 8270E 1 780901 T1C EET SAVTotal/NA 05/29/23 22:40 Prep 3005A 780920 RR EET SAVTotal Recoverable 05/30/23 06:22 Analysis 6010D 1 781123 BJB EET SAVTotal Recoverable 05/30/23 15:48 Prep 3005A 780921 RR EET SAVTotal Recoverable 05/30/23 06:22 Analysis 6020B 1 781125 BJB EET SAVTotal Recoverable 05/30/23 23:10 Prep 7470A 781000 JKL EET SAVTotal/NA 05/30/23 10:34 Analysis 7470A 1 781270 JKL EET SAVTotal/NA 05/31/23 09:44 Client Sample ID: 7601-MW7 Lab Sample ID: 752-7507-3 Matrix: WaterDate Collected: 05/22/23 09:44 Date Received: 05/25/23 10:00 Analysis 8260 SIM NTA1781127 EET SAV Type Batch Batch MethodPrep Type LabAnalystRun Prepared or Analyzed Batch Number Dilution Factor Total/NA 05/31/23 15:36 Analysis 8260D 1 3101 RY EET ESCTotal/NA 06/02/23 20:21 Prep 3510C 780784 MR EET SAVTotal/NA 05/27/23 12:41 Analysis 8270E 1 780901 T1C EET SAVTotal/NA 05/29/23 19:46 Prep 3005A 780926 RR EET SAVTotal Recoverable 05/30/23 06:51 Analysis 6010D 1 781123 BJB EET SAVTotal Recoverable 05/30/23 14:34 Prep 3005A 780928 RR EET SAVTotal Recoverable 05/30/23 06:51 Analysis 6020B 1 781125 BJB EET SAVTotal Recoverable 05/30/23 20:32 Prep 7470A 781000 JKL EET SAVTotal/NA 05/30/23 10:34 Analysis 7470A 1 781270 JKL EET SAVTotal/NA 05/31/23 09:46 Eurofins Raleigh Page 53 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: WSP USA Inc Job ID: 752-7507-1 Project/Site: Randolph County Landfill Client Sample ID: 7601-MW8 Lab Sample ID: 752-7507-4 Matrix: WaterDate Collected: 05/23/23 10:50 Date Received: 05/25/23 10:00 Analysis 8260 SIM NTA1781127 EET SAV Type Batch Batch MethodPrep Type LabAnalystRun Prepared or Analyzed Batch Number Dilution Factor Total/NA 05/31/23 16:02 Analysis 8260D 1 3113 RY EET ESCTotal/NA 06/03/23 06:40 Prep 3510C 780784 MR EET SAVTotal/NA 05/27/23 12:41 Analysis 8270E 1 780901 T1C EET SAVTotal/NA 05/29/23 23:02 Prep 3005A 780926 RR EET SAVTotal Recoverable 05/30/23 06:51 Analysis 6010D 1 781123 BJB EET SAVTotal Recoverable 05/30/23 14:44 Prep 3005A 780928 RR EET SAVTotal Recoverable 05/30/23 06:51 Analysis 6020B 1 781125 BJB EET SAVTotal Recoverable 05/30/23 20:44 Prep 7470A 781000 JKL EET SAVTotal/NA 05/30/23 10:34 Analysis 7470A 1 781270 JKL EET SAVTotal/NA 05/31/23 09:54 Client Sample ID: 7601-MW9 Lab Sample ID: 752-7507-5 Matrix: WaterDate Collected: 05/23/23 09:35 Date Received: 05/25/23 10:00 Analysis 8260 SIM NTA1781391 EET SAV Type Batch Batch MethodPrep Type LabAnalystRun Prepared or Analyzed Batch Number Dilution Factor Total/NA 06/01/23 16:31 Analysis 8260D 1 3113 RY EET ESCTotal/NA 06/03/23 07:10 Prep 3510C 780784 MR EET SAVTotal/NA 05/27/23 12:41 Analysis 8270E 1 780901 T1C EET SAVTotal/NA 05/29/23 23:24 Prep 3005A 780926 RR EET SAVTotal Recoverable 05/30/23 06:51 Analysis 6010D 1 781123 BJB EET SAVTotal Recoverable 05/30/23 14:48 Prep 3005A 780928 RR EET SAVTotal Recoverable 05/30/23 06:51 Analysis 6020B 1 781125 BJB EET SAVTotal Recoverable 05/30/23 20:48 Prep 7470A 781000 JKL EET SAVTotal/NA 05/30/23 10:34 Analysis 7470A 1 781270 JKL EET SAVTotal/NA 05/31/23 09:55 Client Sample ID: 7601-SW1 Lab Sample ID: 752-7507-6 Matrix: WaterDate Collected: 05/23/23 10:35 Date Received: 05/25/23 10:00 Analysis 8260 SIM NTA1781127 EET SAV Type Batch Batch MethodPrep Type LabAnalystRun Prepared or Analyzed Batch Number Dilution Factor Total/NA 05/31/23 16:53 Analysis 8260D 1 3113 RY EET ESCTotal/NA 06/03/23 07:39 Prep 3005A 780920 RR EET SAVTotal Recoverable 05/30/23 06:22 Analysis 6010D 1 781123 BJB EET SAVTotal Recoverable 05/30/23 15:51 Prep 3005A 780921 RR EET SAVTotal Recoverable 05/30/23 06:22 Analysis 6020B 1 781125 BJB EET SAVTotal Recoverable 05/30/23 23:27 Client Sample ID: 7601-SW2 Lab Sample ID: 752-7507-7 Matrix: WaterDate Collected: 05/23/23 11:16 Date Received: 05/25/23 10:00 Analysis 8260 SIM NTA1781127 EET SAV Type Batch Batch MethodPrep Type LabAnalystRun Prepared or Analyzed Batch Number Dilution Factor Total/NA 05/31/23 17:18 Eurofins Raleigh Page 54 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Lab Chronicle Client: WSP USA Inc Job ID: 752-7507-1 Project/Site: Randolph County Landfill Client Sample ID: 7601-SW2 Lab Sample ID: 752-7507-7 Matrix: WaterDate Collected: 05/23/23 11:16 Date Received: 05/25/23 10:00 Analysis 8260D RY13113 EET ESC Type Batch Batch MethodPrep Type LabAnalystRun Prepared or Analyzed Batch Number Dilution Factor Total/NA 06/03/23 08:09 Prep 3005A 780920 RR EET SAVTotal Recoverable 05/30/23 06:22 Analysis 6010D 1 781123 BJB EET SAVTotal Recoverable 05/30/23 15:54 Prep 3005A 780921 RR EET SAVTotal Recoverable 05/30/23 06:22 Analysis 6020B 1 781125 BJB EET SAVTotal Recoverable 05/30/23 23:31 Client Sample ID: 7601-SW3 Lab Sample ID: 752-7507-8 Matrix: WaterDate Collected: 05/24/23 12:35 Date Received: 05/25/23 10:00 Analysis 8260 SIM NTA1781127 EET SAV Type Batch Batch MethodPrep Type LabAnalystRun Prepared or Analyzed Batch Number Dilution Factor Total/NA 05/31/23 17:43 Analysis 8260D 1 3113 RY EET ESCTotal/NA 06/03/23 08:39 Prep 3005A 780920 RR EET SAVTotal Recoverable 05/30/23 06:22 Analysis 6010D 1 781123 BJB EET SAVTotal Recoverable 05/30/23 15:58 Prep 3005A 780921 RR EET SAVTotal Recoverable 05/30/23 06:22 Analysis 6020B 1 781125 BJB EET SAVTotal Recoverable 05/30/23 23:35 Client Sample ID: 7601-SW4 Lab Sample ID: 752-7507-9 Matrix: WaterDate Collected: 05/24/23 13:07 Date Received: 05/25/23 10:00 Analysis 8260 SIM NTA1781127 EET SAV Type Batch Batch MethodPrep Type LabAnalystRun Prepared or Analyzed Batch Number Dilution Factor Total/NA 05/31/23 18:08 Analysis 8260D 1 3113 RY EET ESCTotal/NA 06/03/23 09:08 Prep 3005A 780920 RR EET SAVTotal Recoverable 05/30/23 06:22 Analysis 6010D 1 781123 BJB EET SAVTotal Recoverable 05/30/23 16:01 Prep 3005A 780921 RR EET SAVTotal Recoverable 05/30/23 06:22 Analysis 6020B 1 781125 BJB EET SAVTotal Recoverable 05/30/23 23:39 Client Sample ID: 7601-Trip Blank Lab Sample ID: 752-7507-10 Matrix: WaterDate Collected: 05/22/23 14:45 Date Received: 05/25/23 10:00 Analysis 8260D RY13101 EET ESC Type Batch Batch MethodPrep Type LabAnalystRun Prepared or Analyzed Batch Number Dilution Factor Total/NA 06/02/23 22:48 Laboratory References: EET ESC = Eurofins Raleigh, 102-A Woodwinds Industrial Court, Cary, NC 27511, TEL (919)677-1669 EET SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL (912)354-7858 Eurofins Raleigh Page 55 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Accreditation/Certification Summary Client: WSP USA Inc Job ID: 752-7507-1 Project/Site: Randolph County Landfill Laboratory: Eurofins Raleigh The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date North Carolina (WW/SW)State 591 12-31-23 Laboratory: Eurofins Savannah The accreditations/certifications listed below are applicable to this report. Authority Program Identification Number Expiration Date North Carolina (WW/SW)State 269 12-31-23 Eurofins Raleigh Page 56 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Method Summary Job ID: 752-7507-1Client: WSP USA Inc Project/Site: Randolph County Landfill Method Method Description LaboratoryProtocol SW8468260 SIM 1,4-Dioxane by SIM EET SAV SW8468260DVolatile Organic Compounds by GC/MS EET ESC SW8468270ESemivolatile Organic Compounds (GC/MS)EET SAV SW8466010DMetals (ICP)EET SAV SW8466020BMetals (ICP/MS)EET SAV SW8467470AMercury (CVAA)EET SAV SW8463005APreparation, Total Recoverable or Dissolved Metals EET SAV SW8463510CLiquid-Liquid Extraction (Separatory Funnel)EET SAV SW8465030CPurge and Trap EET ESC SW8465030CPurge and Trap EET SAV SW8467470APreparation, Mercury EET SAV Protocol References: SW846 = "Test Methods For Evaluating Solid Waste, Physical/Chemical Methods", Third Edition, November 1986 And Its Updates. Laboratory References: EET ESC = Eurofins Raleigh, 102-A Woodwinds Industrial Court, Cary, NC 27511, TEL (919)677-1669 EET SAV = Eurofins Savannah, 5102 LaRoche Avenue, Savannah, GA 31404, TEL (912)354-7858 Eurofins Raleigh Page 57 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Sample Summary Client: WSP USA Inc Job ID: 752-7507-1 Project/Site: Randolph County Landfill Lab Sample ID Client Sample ID Matrix Collected Received 752-7507-1 7601-MW10S Water 05/22/23 14:45 05/25/23 10:00 752-7507-2 7601-MW6 Water 05/23/23 11:15 05/25/23 10:00 752-7507-3 7601-MW7 Water 05/22/23 09:44 05/25/23 10:00 752-7507-4 7601-MW8 Water 05/23/23 10:50 05/25/23 10:00 752-7507-5 7601-MW9 Water 05/23/23 09:35 05/25/23 10:00 752-7507-6 7601-SW1 Water 05/23/23 10:35 05/25/23 10:00 752-7507-7 7601-SW2 Water 05/23/23 11:16 05/25/23 10:00 752-7507-8 7601-SW3 Water 05/24/23 12:35 05/25/23 10:00 752-7507-9 7601-SW4 Water 05/24/23 13:07 05/25/23 10:00 752-7507-10 7601-Trip Blank Water 05/22/23 14:45 05/25/23 10:00 Eurofins RaleighPage 58 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 59 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 60 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Page 61 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Login Sample Receipt Checklist Client: WSP USA Inc Job Number: 752-7507-1 Login Number: 7507 Question Answer Comment Creator: Yonish, Rachel List Source: Eurofins Raleigh List Number: 1 TrueRadioactivity wasn't checked or is </= background as measured by a survey meter. TrueThe cooler's custody seal, if present, is intact. TrueSample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded. TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. TrueSample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs TrueContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. TrueResidual Chlorine Checked. Eurofins Raleigh Page 62 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Login Sample Receipt Checklist Client: WSP USA Inc Job Number: 752-7507-1 Login Number: 7507 Question Answer Comment Creator: Harley, Tynisha List Source: Eurofins Savannah List Creation: 05/26/23 02:19 PMList Number: 2 N/ARadioactivity wasn't checked or is </= background as measured by a survey meter. TrueThe cooler's custody seal, if present, is intact. TrueSample custody seals, if present, are intact. TrueThe cooler or samples do not appear to have been compromised or tampered with. TrueSamples were received on ice. TrueCooler Temperature is acceptable. TrueCooler Temperature is recorded. TrueCOC is present. TrueCOC is filled out in ink and legible. TrueCOC is filled out with all pertinent information. TrueIs the Field Sampler's name present on COC? TrueThere are no discrepancies between the containers received and the COC. TrueSamples are received within Holding Time (excluding tests with immediate HTs) TrueSample containers have legible labels. TrueContainers are not broken or leaking. TrueSample collection date/times are provided. TrueAppropriate sample containers are used. TrueSample bottles are completely filled. N/ASample Preservation Verified. TrueThere is sufficient vol. for all requested analyses, incl. any requested MS/MSDs N/AContainers requiring zero headspace have no headspace or bubble is <6mm (1/4"). TrueMultiphasic samples are not present. TrueSamples do not require splitting or compositing. N/AResidual Chlorine Checked. Eurofins Raleigh Page 63 of 63 6/6/2023 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 WSP USA INC QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 1 of 4 Project Name: Randolph County Landfill Project Reference Number: 31404568.018 Sampling Event Date: May 22 - 24, 2023 Review Date: August 8, 2023 Initials: JS Report #: 752-7507-1 Review: MS Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. WSP USA Inc. has reviewed the laboratory certificates of analysis, chain-of-custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents:  Region III Modifications to Functional Guidelines for Organic Data Review Multi-Media, Multi- Concentration, September 1994;  Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and  Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility List (.500 Rules) NC C & D List (New Rules) NC Appendix I Metals + VOAs + 1,4-Dioxane NC Appendix I + Detects NC Appendix II + Cyanide NC Subtitle D Leachate List Other: (Hg, Diethyl phthalate, Dichlorodifluoromethane [MWs only]) 1.0 CHAIN OF CUSTODY (COC) REVIEW JS COC was properly signed by all parties. JS Correct project name and number are on the form. JS Sample receipt condition at laboratory was acceptable. JS Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES JS Holding times for extraction and/or analysis were met for each analytical method (see below for reference). Review Criteria Method Analytes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days WSP USA INC QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 2 of 4 SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW JS Laboratory analyzed at least one internal blank for each method, where applicable. JS Laboratory blank is interference-free.  Chloroform in trip blank @ 0.205 ug/L (J) JS Surrogate recoveries are provided for each analytical method, where applicable. JS Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). JS MS/MSD/LCS data results are provided for each analytical method. JS MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range). Method 7470A – Mercury (CVAA)  The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 781270 were outside control limits for Mercury. No laboratory comment was given for this detection. (Sample ID: 752-7507-3 MS/MSD) GC/MS VOA, Method 8260D  The matrix spike / matrix spike duplicate (MS/MSD) recoveries for analytical batch 752-3101 were outside control limits for Carbon tetrachloride. Sample matrix interference and/or non-homogeneity are suspected because the associated laboratory control sample (LCS) recovery is within acceptance limits.  The CCV for analytical batch 752-3101 recovered outside control limits for the following analyte(s): 2-Butanone (MEK), 2-Hexanone, Acetone, Acrylonitrile, Bromomethane, Chloroethane, Chloromethane and Trichlorofluoromethane. These have been identified as poor performing analytes when analyzed using this method; therefore, re-extraction/re- analysis was not performed. These results have been reported and qualified.  The continuing calibration verification (CCV) associated with batch 752-3101 recovered above the upper control limit for 1,1,1-Trichloroethane, 1,2-Dichloroethane and Carbon tetrachloride. The samples associated with this CCV were non-detects for the affected analytes; therefore, the data have been reported.  The continuing calibration verification (CCV) associated with batch 752-3101 recovered outside acceptance criteria, low biased, for Dibromofluoromethane (Surr), Toluene-d8 (Surr) and Vinyl chloride. A reporting limit (RL) standard was analyzed, and the target analytes are detected. Since the associated samples were non-detect for the analyte(s), the data are reported.  The CCV for analytical batch 752-3113 recovered outside control limits for the following analyte(s): 2-Hexanone, Acrylonitrile, Bromomethane, Chloroethane, Chloromethane and Trichlorofluoromethane. These compounds have been identified as a poor performing analytes when analyzed using this method; therefore, re-extraction/re-analysis was not WSP USA INC QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 3 of 4 performed. These results have been reported and qualified.  The continuing calibration verification (CCV) associated with batch 752-3113 recovered outside acceptance criteria, low biased, for Dibromofluoromethane (Surr), Toluene-d8 (Surr) and Vinyl chloride. A reporting limit (RL) standard was analyzed, and the target analytes are detected. Since the associated samples were non-detect for the analyte(s), the data are reported.  The continuing calibration verification (CCV) associated with batch 752-3113 recovered above the upper control limit for 1,2-Dichloroethane and Carbon tetrachloride. The samples associated with this CCV were non-detects for the affected analytes; therefore, the data have been reported. GC/MS Semi VOA, Method 8270E  The continuing calibration verification (CCV) analyzed in batch 680-780901 was outside the method criteria for the following analyte(s): Diethyl phthalate. A CCV standard at or below the reporting limit (RL) was analyzed with the affected samples and found to be acceptable. As indicated in the reference method, sample analysis may proceed; however, any detection for the affected analyte(s) is considered estimated. 4.0 ANALYTE LISTS/METHODS JS The proper number of constituents are present for each analyte list as identified above (including detects where applicable). JS Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING JS All analytical reporting associated with the event was performed by the contracted lab. JS Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been ‘flagged’ with a ‘B’ where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 10X for commonly detected laboratory contaminants-acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below.  Trip Blank – Chloroform @ 0.205 (J)  MW-8 @ 0.181 ug/L (J). B flag added.  SW-3 @ 0.725 ug/L (J). B flag added.  SW-4 @ 0.733 ug/L (J). B flag added.  Method Blank – Methylene Chloride @ 0.2518 (J)  MW-10s @ 0.241 ug/L (J). B flag added JS It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor. JS The report provides the reporting limit for each constituent. JS The results were reported at or below their proper reporting limits with the proper reporting limit listed WSP USA INC QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA REVIEW Page 4 of 4 beside them. State if the reporting limit error is due to dilutions. JS No organic constituents were reported above their respective detection limits, and no inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards/GWPS in wells, or field/equipment/trip blanks, or above applicable surface water standards in surface water points.  1,1-Dichloroethane (NC 2L = 6 ug/L)  MW-10S @ 38.3 ug/L  1,4-Dioxane (NC 2L = 3 ug/L)  MW-6 @ 9.11 ug/L  MW-10S @ 24.4 ug/L  Tetrachloroethene (NC 2L = 0.7 ug/L)  MW-10S @ 2.54 ug/L  Vinyl Chloride (NC 2L = 0.03 ug/L)  MW-10S @ 0.665 ug/L (J)  Cobalt (NC 2L = 1 ug/L)  MW-6 @ 1.56 ug/L (J)  MW-7 @ 10.9 ug/L JS No inorganic and organic constituents were detected in a well or surface water point at quantified concentrations outside of their historical range (more than 5X previous concentrations or first-time detections).  Chloroform (1st time detection)  MW-8 @ 0.181 ug/L (B)  Chloromethane (1st time detection since 2007)  MW-6 @ 0.147 ug/L (J)  Bromodichloromethane (1st time detection since 2007)  SW-4 @ 0.287 ug/L (J) JS Other report issues/Communications with laboratory/etc.: Cover ANALYTICAL RESULTS PERFORMED BY Pace Analytical Gulf Coast 7979 Innovation Park Dr. Baton Rouge, LA 70820 (225) 769-4900 Report Date 06/12/2023 Report # 223052434 9999999999 Project Randolph Co 31404568.018 Samples Collected 5/22/23 Deliver To Additional Recipients Darren Cox Matthew Scheidt, WSP WSP / Golder 5B Oak Branch Dr Greensboro, NC 27407 LELAP Certificate Number: 01955 A2LA Accredited (DoD ELAP-QSM 5.4) Certificate Number: 6429.01 Page 1 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Laboratory Endorsement Sample analysis was performed in accordance with approved methodologies provided by the Environmental Protection Agency or other recognized agencies. The samples and their corresponding extracts will be maintained for a period of 30 days unless otherwise arranged. Following this retention period the samples will be disposed in accordance with Pace Gulf Coast's Standard Operating Procedures. Common Abbreviations that may be Utilized in this Report ND Indicates the result was Not Detected at the specified reporting limit NO Indicates the sample did not ignite when preliminary test performed for EPA Method 1030 DO Indicates the result was Diluted Out MI Indicates the result was subject to Matrix Interference TNTC Indicates the result was Too Numerous To Count SUBC Indicates the analysis was Sub-Contracted FLD Indicates the analysis was performed in the Field DL Detection Limit LOD Limit of Detection LOQ Limit of Quantitation RE Re-analysis CF HPLC or GC Confirmation 00:01 Reported as a time equivalent to 12:00 AM Reporting Flags that may be Utilized in this Report J or I Indicates the result is between the MDL and LOQ J DOD flag on analyte in the parent sample for MS/MSD outside acceptance criteria U Indicates the compound was analyzed for but not detected B or V Indicates the analyte was detected in the associated Method Blank Q Indicates a non-compliant QC Result (See Q Flag Application Report) * Indicates a non-compliant or not applicable QC recovery or RPD – see narrative E Organics - The result is estimated because it exceeded the instrument calibration range E Metals - % diference for the serial dilution is > 10% L Reporting Limits adjusted to meet risk-based limit. P RPD between primary and confirmation result is greater than 40 DL Diluted analysis – when appended to Client Sample ID Sample receipt at Pace Gulf Coast is documented through the attached chain of custody. In accordance with NELAC, this report shall be reproduced only in full and with the written permission of Pace Gulf Coast. The results contained within this report relate only to the samples reported. The documented results are presented within this report. This report pertains only to the samples listed in the Report Sample Summary and should be retained as a permanent record thereof. The results contained within this report are intended for the use of the client. Any unauthorized use of the information contained in this report is prohibited. I certify that this data package is in compliance with The NELAC Institute (TNI) Standard 2009 and terms and conditions of the contract and Statement of Work both technically and for completeness, for other than the conditions in the case narrative. Release of the data contained in this hardcopy data package and in the computer readable data submitted has been authorized by the Quality Assurance Manager or his/her designee, as verified by the following signature. Estimated uncertainty of measurement is available upon request. This report is in compliance with the DOD QSM as specified in the contract if applicable. Authorized Signature Pace Gulf Coast Report 223052434 Page 2 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Certifications Certification Certification Number Page 3 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Case Narrative Client: Golder Associates - NC Report: 223052434 Pace Analytical Gulf Coast received and analyzed the sample(s) listed on the Report Sample Summary page of this report. Receipt of the sample(s) is documented by the attached chain of custody. This applies only to the sample(s) listed in this report. No sample integrity or quality control exceptions were identified unless noted below. VOLATILES MASS SPECTROMETRY MSV: Batch 52880 in the Opening CCV, several non target analytes failed but all target analytes passed. MISCELLANEOUS See subcontract laboratory report case narrative. Page 4 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Summary Lab ID Client ID Matrix Collect Date Receive Date 22305243401 MW-8 Water 5/22/23 10:50 5/23/23 10:10 22305243402 MW-3 Water 5/22/23 13:20 5/23/23 10:10 22305243403 MW-11S Water 5/22/23 14:58 5/23/23 10:10 22305243404 MW-2 Water 5/22/23 12:30 5/23/23 10:10 22305243405 MW-7 Water 5/22/23 09:44 5/23/23 10:10 22305243406 MW-10S Water 5/22/23 14:45 5/23/23 10:10 Page 5 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Detect Summary Results and Detection Limits are adjusted for dilution and moisture when applicable AM23G Lab ID Client ID Parameter Units Result Dil. %Moist 22305243401 MW-8 Acetic Acid mg/L 1.1 1 NA 22305243401 MW-8 Formic Acid mg/L 5.2 1 NA 22305243401 MW-8 Lactic Acid mg/L 0.72 1 NA 22305243401 MW-8 Propionic Acid mg/L 0.19J 1 NA 22305243402 MW-3 Acetic Acid mg/L 1.1 1 NA 22305243402 MW-3 Formic Acid mg/L 5.4 1 NA 22305243402 MW-3 Lactic Acid mg/L 0.46J 1 NA 22305243402 MW-3 Propionic Acid mg/L 0.19J 1 NA 22305243403 MW-11S Acetic Acid mg/L 1.2 1 NA 22305243403 MW-11S Formic Acid mg/L 6.1 1 NA 22305243403 MW-11S Lactic Acid mg/L 0.25J 1 NA 22305243403 MW-11S Propionic Acid mg/L 0.24J 1 NA 22305243404 MW-2 Acetic Acid mg/L 1.1 1 NA 22305243404 MW-2 Formic Acid mg/L 5.0 1 NA 22305243404 MW-2 Propionic Acid mg/L 0.19J 1 NA 22305243405 MW-7 Acetic Acid mg/L 1.0 1 NA 22305243405 MW-7 Formic Acid mg/L 5.6 1 NA 22305243405 MW-7 Propionic Acid mg/L 0.17J 1 NA 22305243406 MW-10S Acetic Acid mg/L 8.5 10 NA 22305243406 MW-10S Formic Acid mg/L 51 10 NA 22305243406 MW-10S Propionic Acid mg/L 1.7J 10 NA EPA 9034 Lab ID Client ID Parameter Units Result Dil. %Moist 22305243401 MW-8 Sulfide mg/L 3.2 1 NA 22305243402 MW-3 Sulfide mg/L 5.0 1 NA 22305243403 MW-11S Sulfide mg/L 2.2 1 NA 22305243404 MW-2 Sulfide mg/L 4.4 1 NA 22305243405 MW-7 Sulfide mg/L 3.2 1 NA 22305243406 MW-10S Sulfide mg/L 4.0 1 NA EPA 9056A Lab ID Client ID Parameter Units Result Dil. %Moist 22305243401 MW-8 Chloride mg/L 7.60 1 NA 22305243401 MW-8 Sulfate mg/L 0.906 1 NA 22305243402 MW-3 Chloride mg/L 7.48 1 NA 22305243402 MW-3 Nitrate mg/L-N 0.102J 1 NA 22305243402 MW-3 Sulfate mg/L 1.80 1 NA 22305243403 MW-11S Chloride mg/L 6.52 1 NA Page 6 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Detect Summary (Continued) Results and Detection Limits are adjusted for dilution and moisture when applicable EPA 9056A Lab ID Client ID Parameter Units Result Dil. %Moist 22305243403 MW-11S Sulfate mg/L 0.579 1 NA 22305243404 MW-2 Chloride mg/L 13.8 2 NA 22305243404 MW-2 Sulfate mg/L 2.40 1 NA 22305243405 MW-7 Chloride mg/L 8.65 1 NA 22305243405 MW-7 Sulfate mg/L 0.707 1 NA 22305243406 MW-10S Chloride mg/L 38.6 5 NA 22305243406 MW-10S Sulfate mg/L 9.56 1 NA EPA 9060A Lab ID Client ID Parameter Units Result Dil. %Moist 22305243401 MW-8 Total Organic Carbon mg/L 1.47J 1 NA 22305243402 MW-3 Total Organic Carbon mg/L 1.96J 1 NA 22305243403 MW-11S Total Organic Carbon mg/L 1.01J 1 NA 22305243404 MW-2 Total Organic Carbon mg/L 4.93 1 NA 22305243405 MW-7 Total Organic Carbon mg/L 4.38 1 NA 22305243406 MW-10S Total Organic Carbon mg/L 3.26 1 NA SM 2320 B-2011 Lab ID Client ID Parameter Units Result Dil. %Moist 22305243401 MW-8 Total Alkalinity mg/L CaCO3 79.0 1 NA 22305243402 MW-3 Total Alkalinity mg/L CaCO3 66.6 1 NA 22305243403 MW-11S Total Alkalinity mg/L CaCO3 32.4 1 NA 22305243404 MW-2 Total Alkalinity mg/L CaCO3 4.0 1 NA 22305243405 MW-7 Total Alkalinity mg/L CaCO3 33.0 1 NA 22305243406 MW-10S Total Alkalinity mg/L CaCO3 91.6 1 NA SM 3500-Fe B-2011 Lab ID Client ID Parameter Units Result Dil. %Moist 22305243401 MW-8 Ferrous Iron mg/L 0.021J 1 NA 22305243402 MW-3 Ferrous Iron mg/L 0.024J 1 NA 22305243405 MW-7 Ferrous Iron mg/L 0.055 1 NA EPA 8260B Lab ID Client ID Parameter Units Result Dil. %Moist 22305243404 MW-2 1,1-Dichloroethane ug/L 3.58J 1 NA 22305243405 MW-7 1,1-Dichloroethane ug/L 0.403J 1 NA 22305243405 MW-7 Trichloroethene ug/L 0.412J 1 NA 22305243406 MW-10S 1,1-Dichloroethane ug/L 38.9 1 NA 22305243406 MW-10S Tetrachloroethene ug/L 1.87J 1 NA 22305243406 MW-10S Vinyl chloride ug/L 0.879J 1 NA Page 7 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results Sample Results MW-8 MW-8 Collect Date 05/22/2023 10:50 Lab ID 22305243401 Receive Date 05/23/2023 10:10 Matrix Water AM23G AM23G Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 21:24 766494 LHM NA CAS# Parameter Result DL LOQ Units 64-19-7 Acetic Acid 1.1 0.12 0.50 mg/L 107-92-6 Butyric Acid 0.058U 0.058 0.50 mg/L 64-18-6 Formic Acid 5.2 0.055 0.50 mg/L 142-62-1 Hexanoic Acid 0.058U 0.058 0.50 mg/L 646-07-1 i-Hexanoic Acid 0.056U 0.056 0.50 mg/L 503-74-2 i-Pentanoic Acid 0.061U 0.061 0.50 mg/L 50-21-5 Lactic Acid 0.72 0.053 0.50 mg/L 109-52-4 Pentanoic Acid 0.056U 0.056 0.50 mg/L 79-09-4 Propionic Acid 0.19J 0.053 0.50 mg/L 127-17-3 Pyruvic Acid 0.060U 0.060 0.50 mg/L EPA 9034 EPA 9034 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 13:00 766574 RYC NA CAS# Parameter Result DL LOQ Units 18496-25-8 Sulfide 3.2 1.1 2.0 mg/L EPA 9056A EPA 9056A Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/23/23 11:50 766209 CS NA CAS# Parameter Result DL LOQ Units 16887-00-6 Chloride 7.60 0.050 0.200 mg/L 14797-55-8 Nitrate 0.100U 0.100 0.200 mg/L-N 14808-79-8 Sulfate 0.906 0.100 0.200 mg/L EPA 9060A EPA 9060A *Results are reported on a dry weight basis. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/31/23 11:33 766751 CCL NA CAS# Parameter Result DL LOQ Units C-012 Total Organic Carbon 1.47J 0.300 2.00 mg/L Page 8 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-8 Collect Date 05/22/2023 10:50 Lab ID 22305243401 Receive Date 05/23/2023 10:10 Matrix Water HACH 8000 HACH 8000 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 13:27 766484 RYC NA CAS# Parameter Result DL LOQ Units C-004 COD 1.7U 1.7 5.0 mg/L SM 2320 B-2011 SM 2320 B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 12:08 766520 MMP NA CAS# Parameter Result DL LOQ Units 000000-00-5 Total Alkalinity 79.0 0.26 1.0 mg/L CaCO3 SM 3500-Fe B-2011 SM 3500-Fe B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/23/23 15:00 766458 RYC NA CAS# Parameter Result DL LOQ Units WET-045 Ferrous Iron 0.021J 0.014 0.050 mg/L SM 5210 B-2016 SM 5210 B-2016 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture 05/23/23 11:53 766364 BOD PREP 1 05/23/23 11:53 766638 MLG NA CAS# Parameter Result DL LOQ Units C-002 BOD 3U 3 3 mg/L Subcontract Work Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/12/23 14:22 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-001 Ship Result * mg/L Page 9 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-8 Collect Date 05/22/2023 10:50 Lab ID 22305243401 Receive Date 05/23/2023 10:10 Matrix Water - Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/12/23 14:22 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-002 Ship Result * mg/L MW-3 MW-3 Collect Date 05/22/2023 13:20 Lab ID 22305243402 Receive Date 05/23/2023 10:10 Matrix Water AM23G AM23G Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 22:15 766494 LHM NA CAS# Parameter Result DL LOQ Units 64-19-7 Acetic Acid 1.1 0.12 0.50 mg/L 107-92-6 Butyric Acid 0.058U 0.058 0.50 mg/L 64-18-6 Formic Acid 5.4 0.055 0.50 mg/L 142-62-1 Hexanoic Acid 0.058U 0.058 0.50 mg/L 646-07-1 i-Hexanoic Acid 0.056U 0.056 0.50 mg/L 503-74-2 i-Pentanoic Acid 0.061U 0.061 0.50 mg/L 50-21-5 Lactic Acid 0.46J 0.053 0.50 mg/L 109-52-4 Pentanoic Acid 0.056U 0.056 0.50 mg/L 79-09-4 Propionic Acid 0.19J 0.053 0.50 mg/L 127-17-3 Pyruvic Acid 0.060U 0.060 0.50 mg/L EPA 9034 EPA 9034 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 13:00 766574 RYC NA CAS# Parameter Result DL LOQ Units 18496-25-8 Sulfide 5.0 1.1 2.0 mg/L EPA 9056A EPA 9056A Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/23/23 12:24 766209 CS NA CAS# Parameter Result DL LOQ Units 16887-00-6 Chloride 7.48 0.050 0.200 mg/L 14797-55-8 Nitrate 0.102J 0.100 0.200 mg/L-N 14808-79-8 Sulfate 1.80 0.100 0.200 mg/L Page 10 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-3 Collect Date 05/22/2023 13:20 Lab ID 22305243402 Receive Date 05/23/2023 10:10 Matrix Water EPA 9060A EPA 9060A *Results are reported on a dry weight basis. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/31/23 12:46 766751 CCL NA CAS# Parameter Result DL LOQ Units C-012 Total Organic Carbon 1.96J 0.300 2.00 mg/L HACH 8000 HACH 8000 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 13:27 766484 RYC NA CAS# Parameter Result DL LOQ Units C-004 COD 1.7U 1.7 5.0 mg/L SM 2320 B-2011 SM 2320 B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 12:08 766520 MMP NA CAS# Parameter Result DL LOQ Units 000000-00-5 Total Alkalinity 66.6 0.26 1.0 mg/L CaCO3 SM 3500-Fe B-2011 SM 3500-Fe B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/23/23 15:02 766458 RYC NA CAS# Parameter Result DL LOQ Units WET-045 Ferrous Iron 0.024J 0.014 0.050 mg/L SM 5210 B-2016 SM 5210 B-2016 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture 05/23/23 11:53 766364 BOD PREP 1 05/23/23 11:53 766638 MLG NA CAS# Parameter Result DL LOQ Units C-002 BOD 3U 3 3 mg/L Page 11 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-3 Collect Date 05/22/2023 13:20 Lab ID 22305243402 Receive Date 05/23/2023 10:10 Matrix Water Subcontract Work Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/12/23 14:22 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-001 Ship Result * mg/L - Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/12/23 14:22 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-002 Ship Result * mg/L MW-11S MW-11S Collect Date 05/22/2023 14:58 Lab ID 22305243403 Receive Date 05/23/2023 10:10 Matrix Water AM23G AM23G Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 23:07 766494 LHM NA CAS# Parameter Result DL LOQ Units 64-19-7 Acetic Acid 1.2 0.12 0.50 mg/L 107-92-6 Butyric Acid 0.058U 0.058 0.50 mg/L 64-18-6 Formic Acid 6.1 0.055 0.50 mg/L 142-62-1 Hexanoic Acid 0.058U 0.058 0.50 mg/L 646-07-1 i-Hexanoic Acid 0.056U 0.056 0.50 mg/L 503-74-2 i-Pentanoic Acid 0.061U 0.061 0.50 mg/L 50-21-5 Lactic Acid 0.25J 0.053 0.50 mg/L 109-52-4 Pentanoic Acid 0.056U 0.056 0.50 mg/L 79-09-4 Propionic Acid 0.24J 0.053 0.50 mg/L 127-17-3 Pyruvic Acid 0.060U 0.060 0.50 mg/L EPA 9034 EPA 9034 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 13:00 766574 RYC NA CAS# Parameter Result DL LOQ Units 18496-25-8 Sulfide 2.2 1.1 2.0 mg/L Page 12 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-11S Collect Date 05/22/2023 14:58 Lab ID 22305243403 Receive Date 05/23/2023 10:10 Matrix Water EPA 9056A EPA 9056A Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/23/23 12:59 766209 CS NA CAS# Parameter Result DL LOQ Units 16887-00-6 Chloride 6.52 0.050 0.200 mg/L 14797-55-8 Nitrate 0.100U 0.100 0.200 mg/L-N 14808-79-8 Sulfate 0.579 0.100 0.200 mg/L EPA 9060A EPA 9060A *Results are reported on a dry weight basis. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/31/23 13:10 766751 CCL NA CAS# Parameter Result DL LOQ Units C-012 Total Organic Carbon 1.01J 0.300 2.00 mg/L HACH 8000 HACH 8000 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 13:27 766484 RYC NA CAS# Parameter Result DL LOQ Units C-004 COD 1.7U 1.7 5.0 mg/L SM 2320 B-2011 SM 2320 B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 12:08 766520 MMP NA CAS# Parameter Result DL LOQ Units 000000-00-5 Total Alkalinity 32.4 0.26 1.0 mg/L CaCO3 SM 3500-Fe B-2011 SM 3500-Fe B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/23/23 15:02 766458 RYC NA CAS# Parameter Result DL LOQ Units WET-045 Ferrous Iron 0.014U 0.014 0.050 mg/L Page 13 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-11S Collect Date 05/22/2023 14:58 Lab ID 22305243403 Receive Date 05/23/2023 10:10 Matrix Water SM 5210 B-2016 SM 5210 B-2016 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture 05/23/23 11:53 766364 BOD PREP 1 05/23/23 11:53 766638 MLG NA CAS# Parameter Result DL LOQ Units C-002 BOD 3U 3 3 mg/L Subcontract Work Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/12/23 14:22 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-001 Ship Result * mg/L - Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/12/23 14:22 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-002 Ship Result * mg/L MW-2 MW-2 Collect Date 05/22/2023 12:30 Lab ID 22305243404 Receive Date 05/23/2023 10:10 Matrix Water EPA 8260B EPA 8260B Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 14:02 766594 KN1 NA CAS# Parameter Result DL LOQ Units 75-34-3 1,1-Dichloroethane 3.58J 0.200 5.00 ug/L 127-18-4 Tetrachloroethene 0.200U 0.200 5.00 ug/L 79-01-6 Trichloroethene 0.200U 0.200 5.00 ug/L 75-01-4 Vinyl chloride 0.200U 0.200 2.00 ug/L CAS# Surrogate Conc Spiked Conc Rec Units %Recovery %Rec Limits 460-00-4 4-Bromofluorobenzene 50 52.8 ug/L 106 78 - 130 1868-53-7 Dibromofluoromethane 50 57.9 ug/L 116 77 - 127 2037-26-5 Toluene d8 50 53.2 ug/L 106 76 - 134 17060-07-0 1,2-Dichloroethane-d4 50 56.9 ug/L 114 71 - 127 Page 14 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-2 Collect Date 05/22/2023 12:30 Lab ID 22305243404 Receive Date 05/23/2023 10:10 Matrix Water AM23G AM23G Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 23:58 766494 LHM NA CAS# Parameter Result DL LOQ Units 64-19-7 Acetic Acid 1.1 0.12 0.50 mg/L 107-92-6 Butyric Acid 0.058U 0.058 0.50 mg/L 64-18-6 Formic Acid 5.0 0.055 0.50 mg/L 142-62-1 Hexanoic Acid 0.058U 0.058 0.50 mg/L 646-07-1 i-Hexanoic Acid 0.056U 0.056 0.50 mg/L 503-74-2 i-Pentanoic Acid 0.061U 0.061 0.50 mg/L 50-21-5 Lactic Acid 0.053U 0.053 0.50 mg/L 109-52-4 Pentanoic Acid 0.056U 0.056 0.50 mg/L 79-09-4 Propionic Acid 0.19J 0.053 0.50 mg/L 127-17-3 Pyruvic Acid 0.060U 0.060 0.50 mg/L EPA 9034 EPA 9034 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 13:00 766574 RYC NA CAS# Parameter Result DL LOQ Units 18496-25-8 Sulfide 4.4 1.1 2.0 mg/L EPA 9056A EPA 9056A Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/23/23 12:07 766209 CS NA CAS# Parameter Result DL LOQ Units 14797-55-8 Nitrate 0.100U 0.100 0.200 mg/L-N 14808-79-8 Sulfate 2.40 0.100 0.200 mg/L - EPA 9056A *Results and limits are adjusted for dilution. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 2 05/25/23 15:36 766545 CS NA CAS# Parameter Result DL LOQ Units 16887-00-6 Chloride 13.8 0.100 0.400 mg/L Page 15 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-2 Collect Date 05/22/2023 12:30 Lab ID 22305243404 Receive Date 05/23/2023 10:10 Matrix Water EPA 9060A EPA 9060A *Results are reported on a dry weight basis. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/31/23 13:37 766751 CCL NA CAS# Parameter Result DL LOQ Units C-012 Total Organic Carbon 4.93 0.300 2.00 mg/L HACH 8000 HACH 8000 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 13:27 766484 RYC NA CAS# Parameter Result DL LOQ Units C-004 COD 1.7U 1.7 5.0 mg/L SM 2320 B-2011 SM 2320 B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 06/05/23 09:48 767024 MMP NA CAS# Parameter Result DL LOQ Units 000000-00-5 Total Alkalinity 4.0 0.26 1.0 mg/L CaCO3 SM 3500-Fe B-2011 SM 3500-Fe B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/23/23 15:01 766458 RYC NA CAS# Parameter Result DL LOQ Units WET-045 Ferrous Iron 0.014U 0.014 0.050 mg/L SM 5210 B-2016 SM 5210 B-2016 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture 05/23/23 11:53 766364 BOD PREP 1 05/23/23 11:53 766638 MLG NA CAS# Parameter Result DL LOQ Units C-002 BOD 3U 3 3 mg/L Page 16 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-2 Collect Date 05/22/2023 12:30 Lab ID 22305243404 Receive Date 05/23/2023 10:10 Matrix Water Subcontract Work Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/12/23 14:22 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-001 Ship Result * mg/L - Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/12/23 14:22 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-002 Ship Result * mg/L MW-7 MW-7 Collect Date 05/22/2023 09:44 Lab ID 22305243405 Receive Date 05/23/2023 10:10 Matrix Water EPA 8260B EPA 8260B Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 18:14 766594 KN1 NA CAS# Parameter Result DL LOQ Units 75-34-3 1,1-Dichloroethane 0.403J 0.200 5.00 ug/L 127-18-4 Tetrachloroethene 0.200U 0.200 5.00 ug/L 79-01-6 Trichloroethene 0.412J 0.200 5.00 ug/L 75-01-4 Vinyl chloride 0.200U 0.200 2.00 ug/L CAS# Surrogate Conc Spiked Conc Rec Units %Recovery %Rec Limits 460-00-4 4-Bromofluorobenzene 50 52.3 ug/L 105 78 - 130 1868-53-7 Dibromofluoromethane 50 56.7 ug/L 113 77 - 127 2037-26-5 Toluene d8 50 51.6 ug/L 103 76 - 134 17060-07-0 1,2-Dichloroethane-d4 50 56.3 ug/L 113 71 - 127 AM23G AM23G Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 00:50 766494 LHM NA CAS# Parameter Result DL LOQ Units 64-19-7 Acetic Acid 1.0 0.12 0.50 mg/L 107-92-6 Butyric Acid 0.058U 0.058 0.50 mg/L 64-18-6 Formic Acid 5.6 0.055 0.50 mg/L 142-62-1 Hexanoic Acid 0.058U 0.058 0.50 mg/L 646-07-1 i-Hexanoic Acid 0.056U 0.056 0.50 mg/L 503-74-2 i-Pentanoic Acid 0.061U 0.061 0.50 mg/L 50-21-5 Lactic Acid 0.053U 0.053 0.50 mg/L 109-52-4 Pentanoic Acid 0.056U 0.056 0.50 mg/L 79-09-4 Propionic Acid 0.17J 0.053 0.50 mg/L Page 17 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-7 Collect Date 05/22/2023 09:44 Lab ID 22305243405 Receive Date 05/23/2023 10:10 Matrix Water AM23G (Continued) AM23G (Continued) Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 00:50 766494 LHM NA CAS# Parameter Result DL LOQ Units 127-17-3 Pyruvic Acid 0.060U 0.060 0.50 mg/L EPA 9034 EPA 9034 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 13:00 766574 RYC NA CAS# Parameter Result DL LOQ Units 18496-25-8 Sulfide 3.2 1.1 2.0 mg/L EPA 9056A EPA 9056A Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/23/23 11:33 766209 CS NA CAS# Parameter Result DL LOQ Units 16887-00-6 Chloride 8.65 0.050 0.200 mg/L 14797-55-8 Nitrate 0.100U 0.100 0.200 mg/L-N 14808-79-8 Sulfate 0.707 0.100 0.200 mg/L EPA 9060A EPA 9060A *Results are reported on a dry weight basis. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/31/23 14:24 766751 CCL NA CAS# Parameter Result DL LOQ Units C-012 Total Organic Carbon 4.38 0.300 2.00 mg/L HACH 8000 HACH 8000 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 13:28 766484 RYC NA CAS# Parameter Result DL LOQ Units C-004 COD 1.7U 1.7 5.0 mg/L Page 18 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-7 Collect Date 05/22/2023 09:44 Lab ID 22305243405 Receive Date 05/23/2023 10:10 Matrix Water SM 2320 B-2011 SM 2320 B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 06/02/23 14:01 766937 MMP NA CAS# Parameter Result DL LOQ Units 000000-00-5 Total Alkalinity 33.0 0.26 1.0 mg/L CaCO3 SM 3500-Fe B-2011 SM 3500-Fe B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/23/23 14:59 766458 RYC NA CAS# Parameter Result DL LOQ Units WET-045 Ferrous Iron 0.055 0.014 0.050 mg/L SM 5210 B-2016 SM 5210 B-2016 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture 05/23/23 11:53 766364 BOD PREP 1 05/23/23 11:53 766638 MLG NA CAS# Parameter Result DL LOQ Units C-002 BOD 3U 3 3 mg/L Subcontract Work Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/12/23 14:22 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-001 Ship Result * mg/L - Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/12/23 14:22 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-002 Ship Result * mg/L Page 19 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-10S MW-10S Collect Date 05/22/2023 14:45 Lab ID 22305243406 Receive Date 05/23/2023 10:10 Matrix Water EPA 8260B EPA 8260B Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 18:36 766594 KN1 NA CAS# Parameter Result DL LOQ Units 75-34-3 1,1-Dichloroethane 38.9 0.200 5.00 ug/L 127-18-4 Tetrachloroethene 1.87J 0.200 5.00 ug/L 79-01-6 Trichloroethene 0.200U 0.200 5.00 ug/L 75-01-4 Vinyl chloride 0.879J 0.200 2.00 ug/L CAS# Surrogate Conc Spiked Conc Rec Units %Recovery %Rec Limits 460-00-4 4-Bromofluorobenzene 50 52.3 ug/L 105 78 - 130 1868-53-7 Dibromofluoromethane 50 57 ug/L 114 77 - 127 2037-26-5 Toluene d8 50 54 ug/L 108 76 - 134 17060-07-0 1,2-Dichloroethane-d4 50 56.2 ug/L 112 71 - 127 AM23G AM23G *Results and limits are adjusted for dilution. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 10 05/26/23 01:41 766494 LHM NA CAS# Parameter Result DL LOQ Units 64-19-7 Acetic Acid 8.5 1.2 5.0 mg/L 107-92-6 Butyric Acid 0.58U 0.58 5.0 mg/L 64-18-6 Formic Acid 51 0.55 5.0 mg/L 142-62-1 Hexanoic Acid 0.58U 0.58 5.0 mg/L 646-07-1 i-Hexanoic Acid 0.56U 0.56 5.0 mg/L 503-74-2 i-Pentanoic Acid 0.61U 0.61 5.0 mg/L 50-21-5 Lactic Acid 0.53U 0.53 5.0 mg/L 109-52-4 Pentanoic Acid 0.56U 0.56 5.0 mg/L 79-09-4 Propionic Acid 1.7J 0.53 5.0 mg/L 127-17-3 Pyruvic Acid 0.60U 0.60 5.0 mg/L EPA 9034 EPA 9034 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 13:00 766574 RYC NA CAS# Parameter Result DL LOQ Units 18496-25-8 Sulfide 4.0 1.1 2.0 mg/L EPA 9056A EPA 9056A Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/23/23 12:42 766209 CS NA CAS# Parameter Result DL LOQ Units 14797-55-8 Nitrate 0.100U 0.100 0.200 mg/L-N 14808-79-8 Sulfate 9.56 0.100 0.200 mg/L Page 20 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-10S Collect Date 05/22/2023 14:45 Lab ID 22305243406 Receive Date 05/23/2023 10:10 Matrix Water - EPA 9056A *Results and limits are adjusted for dilution. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 5 05/25/23 15:52 766545 CS NA CAS# Parameter Result DL LOQ Units 16887-00-6 Chloride 38.6 0.250 1.00 mg/L EPA 9060A EPA 9060A *Results are reported on a dry weight basis. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/31/23 14:50 766751 CCL NA CAS# Parameter Result DL LOQ Units C-012 Total Organic Carbon 3.26 0.300 2.00 mg/L HACH 8000 HACH 8000 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 13:28 766484 RYC NA CAS# Parameter Result DL LOQ Units C-004 COD 1.7U 1.7 5.0 mg/L SM 2320 B-2011 SM 2320 B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 12:08 766520 MMP NA CAS# Parameter Result DL LOQ Units 000000-00-5 Total Alkalinity 91.6 0.26 1.0 mg/L CaCO3 SM 3500-Fe B-2011 SM 3500-Fe B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/23/23 15:00 766458 RYC NA CAS# Parameter Result DL LOQ Units WET-045 Ferrous Iron 0.014U 0.014 0.050 mg/L Page 21 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 Sample Results MW-10S Collect Date 05/22/2023 14:45 Lab ID 22305243406 Receive Date 05/23/2023 10:10 Matrix Water SM 5210 B-2016 SM 5210 B-2016 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture 05/23/23 11:53 766364 BOD PREP 1 05/23/23 11:53 766638 MLG NA CAS# Parameter Result DL LOQ Units C-002 BOD 3U 3 3 mg/L Subcontract Work Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/12/23 14:22 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-001 Ship Result * mg/L - Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/12/23 14:22 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-002 Ship Result * mg/L Page 22 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 QC Summary GC/MS Volatiles QC Summary GC/MS Volatiles Analytical Batch 766594 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766594 2487626 MB NA 05/26/23 12:32 Water LCS766594 2487627 LCS NA 05/26/23 11:11 Water EPA 8260B Units Result ug/L DL Spike Added Result %R Control Limits%R 1,1-Dichloroethane 75-34-3 0.200U 0.200 50.0 48.1 96 74 - 127 Tetrachloroethene 127-18-4 0.200U 0.200 50.0 47.3 95 68 - 128 Trichloroethene 79-01-6 0.200U 0.200 50.0 47.8 96 76 - 129 Vinyl chloride 75-01-4 0.200U 0.200 50.0 44.5 89 68 - 132 Surrogate CAS# Rec %R Added Rec %R Limits 1,2-Dichloroethane-d4 17060-07-0 55 110 50 55 110 71 - 127 4-Bromofluorobenzene 460-00-4 52.6 105 50 55 110 78 - 130 Dibromofluoromethane 1868-53-7 57.9 116 50 55.5 111 77 - 127 Toluene d8 2037-26-5 54.4 109 50 51.6 103 76 - 134 Page 23 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 General Chemistry QC Summary General Chemistry Analytical Batch 766520 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766520 2487245 MB NA 05/25/23 12:08 Water LCS766520 2488175 LCS NA 05/25/23 12:08 Water LCSD766520 2487247 LCSD NA 05/25/23 12:08 Water SM 2320 B-2011 Units Result mg/L CaCO3 DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Total Alkalinity 000000-00-5 0.26U 0.26 200 197 99 90 - 110 200 199 99 Analytical Batch 766937 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766937 2489326 MB NA 06/02/23 14:01 Water LCS766937 2489327 LCS NA 06/02/23 14:01 Water LCSD766937 2489328 LCSD NA 06/02/23 14:01 Water SM 2320 B-2011 Units Result mg/L CaCO3 DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Total Alkalinity 000000-00-5 0.26U 0.26 200 202 101 90 - 110 200 201 101 0 11 Analytical Batch 767024 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB767024 2489766 MB NA 06/05/23 09:48 Water LCS767024 2489767 LCS NA 06/05/23 09:48 Water LCSD767024 2489768 LCSD NA 06/05/23 09:48 Water SM 2320 B-2011 Units Result mg/L CaCO3 DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Total Alkalinity 000000-00-5 0.26U 0.26 10.0 9.6 96 90 - 110 10.0 10.1 100 4 11 Analytical Batch 766638 Prep Batch 766364 Prep Method BOD PREP Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766364 2486425 MB 05/23/23 11:53 05/23/23 11:53 Water LCS766364 2486427 LCS 05/23/23 11:53 05/23/23 11:53 Water SM 5210 B-2016 Units Result mg/L DL Spike Added Result %R Control Limits%R BOD C-002 3U 3 198 172 87 84.5 - 115.5 Analytical Batch 766574 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766574 2487581 MB NA 05/26/23 13:00 Water LCS766574 2487582 LCS NA 05/26/23 13:00 Water LCSD766574 2487583 LCSD NA 05/26/23 13:00 Water EPA 9034 Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Sulfide 18496-25-8 1.1U 1.1 25.0 25.4 102 50 - 120 25.0 25.6 103 1 25 Analytical Batch 766484 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766484 2487101 MB NA 05/25/23 13:21 Water LCS766484 2487102 LCS NA 05/25/23 13:21 Water LCSD766484 2487103 LCSD NA 05/25/23 13:22 Water HACH 8000 Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit COD C-004 1.8J 1.7 75.0 74.6 99 90 - 110 75.0 71.5 95 4 20 Page 24 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 General Chemistry QC Summary Analytical Batch 766458 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766458 2486953 MB NA 05/23/23 14:58 Water LCS766458 2486954 LCS NA 05/23/23 14:58 Water LCSD766458 2486955 LCSD NA 05/23/23 14:59 Water SM 3500-Fe B-2011 Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Ferrous Iron WET-045 0.014U 0.014 1.00 1.01 101 89.5 - 110.5 1.00 1.03 102 1 20 Analytical Batch 766494 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766494 2487143 MB NA 05/25/23 15:23 Water LCS766494 2487144 LCS NA 05/25/23 16:15 Water LCSD766494 2487145 LCSD NA 05/25/23 17:06 Water AM23G Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Acetic Acid 64-19-7 0.12U 0.12 2.0 2.1 107 70 - 130 2.0 2.1 107 0 20 Butyric Acid 107-92-6 0.058U 0.058 2.0 2.1 104 70 - 130 2.0 2.1 104 0 20 Formic Acid 64-18-6 0.055U 0.055 2.0 2.0 99 70 - 130 2.0 2.0 98 1 20 Hexanoic Acid 142-62-1 0.058U 0.058 2.0 2.1 103 70 - 130 2.0 2.1 103 0 20 i-Hexanoic Acid 646-07-1 0.056U 0.056 2.0 2.0 100 70 - 130 2.0 1.9 96 4 20 i-Pentanoic Acid 503-74-2 0.061U 0.061 2.0 2.1 104 70 - 130 2.0 2.0 100 4 20 Lactic Acid 50-21-5 0.053U 0.053 2.0 2.2 111 70 - 130 2.0 2.2 111 0 20 Pentanoic Acid 109-52-4 0.056U 0.056 2.0 2.1 105 70 - 130 2.0 2.1 106 1 20 Propionic Acid 79-09-4 0.053U 0.053 2.0 2.1 105 70 - 130 2.0 2.1 105 0 20 Pyruvic Acid 127-17-3 0.060U 0.060 2.0 2.0 102 70 - 130 2.0 2.1 104 2 20 Analytical Batch 766209 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766209 2485841 MB NA 05/23/23 10:13 Water LCS766209 2485842 LCS NA 05/23/23 10:30 Water LCSD766209 2485843 LCSD NA 05/23/23 10:48 Water EPA 9056A Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Chloride 16887-00-6 0.050U 0.050 2.50 2.48 99 80 - 120 2.50 2.48 99 0 15 Nitrate 14797-55-8 0.100U 0.100 2.50 2.47 99 80 - 120 2.50 2.47 99 0 15 Sulfate 14808-79-8 0.100U 0.100 2.50 2.50 100 80 - 120 2.50 2.50 100 0 15 Analytical Batch 766545 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766545 2487513 MB NA 05/25/23 13:05 Water LCS766545 2487514 LCS NA 05/25/23 13:22 Water LCSD766545 2487515 LCSD NA 05/25/23 13:39 Water EPA 9056A Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Chloride 16887-00-6 0.050U 0.050 2.50 2.46 98 80 - 120 2.50 2.45 98 0 15 Analytical Batch 766751 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766751 2488438 MB NA 05/31/23 11:09 Water LCS766751 2488439 LCS NA 05/31/23 10:20 Water LCSD766751 2488440 LCSD NA 05/31/23 10:44 Water EPA 9060A Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Total Organic Carbon C-012 0.300U 0.300 50.0 50.5 101 90 - 110 50.0 50.7 101 0 20 Page 25 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Report#: 223052434 Project ID: Randolph Co 31404568.018 Report Date: 06/12/2023 General Chemistry QC Summary Analytical Batch 766751 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MW-8 22305243401 SAMPLE NA 05/31/2023 11:33 Water 2486798MS 2488446 MS NA 05/31/23 11:58 Water 2486798MSD 2488447 MSD NA 05/31/23 12:21 Water EPA 9060A Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Total Organic Carbon C-012 1.47 0.300 50.0 49.3 96 80 - 120 50.0 51.8 101 5 20 Page 26 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 Page 27 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 SAMPLE RECEIVING CHECKLIST *223052434* SAMPLE DELIVERY GROUP 223052434 Client PM RWe Transport Method Golder - NC - Golder Associates - NC Profile Number Received By 300930 Perkins, Brennan McCune, Dodie N. Line Item(s)Receive Date(s) 3 - Waters 05/23/23 CHECKLIST YES NO Samples received with proper thermal preservation? Radioactivity is <1600 cpm? If no, record cpm value in notes section. COC relinquished and complete (including sampleIDs, collect times, and sampler)? All containers received in good condition and within hold time? All sample labels and containers received match the chain of custody? Preservative added to any containers? If received, was headspace for VOC water containers < 6mm? Samples collected in containers provided by Pace Gulf Coast? COOLERS Airbill Thermometer ID:E43 Temp oC 772217571944 3.6 4.3 DISCREPANCIES None LAB PRESERVATIONS None NOTES EXTRA VIALS REC'D FOR 8260 NOT LISTED ON COC-LOGGED PER CONATINER Revision 1.6 Page 1 of 1 Page 28 of 2806/12/2023 15:41Pace Gulf Coast Report#: 223052434 L2329703 Pace Analytical Gulf Coast 223052434 RANDOLPH LF Client: Project Name: Project Number: 06/12/23 320 Forbes Boulevard, Mansfield, MA 02048-1806 Lab Number: Report Date: 508-822-9300 (Fax) 508-822-3288 800-624-9220 - www.alphalab.com 7979 Innovation Park Drive Baton Rouge, LA 70820 Ruth WelshATTN: ANALYTICAL REPORT Certifications & Approvals: MA (M-MA030), NH NELAP (2062), CT (PH-0825), DoD (L2474), FL (E87814), IL (200081), IN (C-MA-04), KY (KY98046), LA (85084), ME (MA00030), MD (350), MI (99110) , NJ (MA015), NY (11627), NC (685), OH (CL106), OR (MA-0262), PA (68-02089), RI (LAO00299), TX (T104704419), VT (VT-0015), VA (460194), WA (C954), US Army Corps of Engineers, USDA (Permit #525-23-107-88708), USFWS (Permit #206964). (337) 439-5000Phone: The original project report/data package is held by Alpha Analytical. This report/data package is paginated and should be reproduced only in its entirety. Alpha Analytical holds no responsibility for results and/or data that are not consistent with the original. Serial_No:06122314:43 Page 1 of 32 L2329703-01 L2329703-02 L2329703-03 L2329703-04 L2329703-05 L2329703-06 Alpha Sample ID MW-8 MW-3 MW-11S MW-2 MW-7 MW-10S Client ID Not Specified Not Specified Not Specified Not Specified Not Specified Not Specified Sample Location RANDOLPH LF 223052434 Project Name: Project Number: Lab Number: Report Date: L2329703 06/12/23 05/22/23 10:50 05/22/23 13:20 05/22/23 14:58 05/22/23 12:30 05/22/23 09:44 05/22/23 14:45 Collection Date/TimeMatrix Receive Date WATER WATER WATER WATER WATER WATER 05/27/23 05/27/23 05/27/23 05/27/23 05/27/23 05/27/23 Serial_No:06122314:43 Page 2 of 32 RANDOLPH LF 223052434 Project Name: Project Number: Lab Number: Report Date: L2329703 06/12/23 Case Narrative The samples were received in accordance with the Chain of Custody and no significant deviations were encountered during the preparation or analysis unless otherwise noted. Sample Receipt, Container Information, and the Chain of Custody are located at the back of the report. Results contained within this report relate only to the samples submitted under this Alpha Lab Number and meet NELAP requirements for all NELAP accredited parameters unless otherwise noted in the following narrative. The data presented in this report is organized by parameter (i.e. VOC, SVOC, etc.). Sample specific Quality Control data (i.e. Surrogate Spike Recovery) is reported at the end of the target analyte list for each individual sample, followed by the Laboratory Batch Quality Control at the end of each parameter. Tentatively Identified Compounds (TICs), if requested, are reported for compounds identified to be present and are not part of the method/program Target Compound List, even if only a subset of the TCL are being reported. If a sample was re-analyzed or re-extracted due to a required quality control corrective action and if both sets of data are reported, the Laboratory ID of the re-analysis or re-extraction is designated with an "R" or "RE", respectively. When multiple Batch Quality Control elements are reported (e.g. more than one LCS), the associated samples for each element are noted in the grey shaded header line of each data table. Any Laboratory Batch, Sample Specific % recovery or RPD value that is outside the listed Acceptance Criteria is bolded in the report. In reference to questions H (CAM) or 4 (RCP) when "NO" is checked, the performance criteria for CAM and RCP methods allow for some quality control failures to occur and still be within method compliance. In these instances, the specific failure is not narrated but noted in the associated QC Outlier Summary Report, located directly after the Case Narrative. QC information is also incorporated in the Data Usability Assessment table (Format 11) of our Data Merger tool, where it can be reviewed in conjunction with the sample result, associated regulatory criteria and any associated data usability implications. Soil/sediments, solids and tissues are reported on a dry weight basis unless otherwise noted. Definitions of all data qualifiers and acronyms used in this report are provided in the Glossary located at the back of the report. HOLD POLICY - For samples submitted on hold, Alpha's policy is to hold samples (with the exception of Air canisters) free of charge for 21 calendar days from the date the project is completed. After 21 calendar days, we will dispose of all samples submitted including those put on hold unless you have contacted your Alpha Project Manager and made arrangements for Alpha to continue to hold the samples. Air canisters will be disposed after 3 business days from the date the project is completed. Please contact Project Management at 800-624-9220 with any questions. Serial_No:06122314:43 Page 3 of 32 Case Narrative (continued) RANDOLPH LF 223052434 Project Name: Project Number: Lab Number: Report Date: L2329703 06/12/23 Report Submission All non-detect (ND) or estimated concentrations (J-qualified) have been quantitated to the limit noted in the MDL column. Carbon Dioxide L2329703-01 through -06: The samples were analyzed with the method required holding time exceeded, per client permission. I, the undersigned, attest under the pains and penalties of perjury that, to the best of my knowledge and belief and based upon my personal inquiry of those responsible for providing the information contained in this analytical report, such information is accurate and complete. This certificate of analysis is not complete unless this page accompanies any and all pages of this report. Authorized Signature: Title: Technical Director/Representative Date: 06/12/23 Serial_No:06122314:43 Page 4 of 32 ORGANICS Serial_No:06122314:43 Page 5 of 32 VOLATILES Serial_No:06122314:43 Page 6 of 32 FF Methane Ethene Ethane Parameter Result Dilution Factor ND ND ND ug/l ug/l ug/l 1 1 1 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 2.00 0.500 0.500 06/12/23 MW-8Client ID: 05/22/23 10:50Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329703-01Lab ID: Field Prep:Not Specified Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 05/31/23 17:30 SRO MDL 2.00 0.500 0.500 A A A Column Sample Depth: Serial_No:06122314:43 Page 7 of 32 Carbon Dioxide Parameter Result Dilution Factor 24.1 mg/l 2 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 6.00 06/12/23 MW-8Client ID: 05/22/23 10:50Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329703-01Lab ID: Field Prep:Not Specified D Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 05/30/23 12:43 SRO MDL 6.00 Sample Depth: Serial_No:06122314:43 Page 8 of 32 Methane Ethene Ethane Parameter Result Dilution Factor 14.5 ND ND ug/l ug/l ug/l 1 1 1 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 2.00 0.500 0.500 06/12/23 MW-3Client ID: 05/22/23 13:20Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329703-02Lab ID: Field Prep:Not Specified Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 06/01/23 17:57 SRO MDL 2.00 0.500 0.500 A A A Column Sample Depth: Serial_No:06122314:43 Page 9 of 32 Carbon Dioxide Parameter Result Dilution Factor 42.9 mg/l 2 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 6.00 06/12/23 MW-3Client ID: 05/22/23 13:20Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329703-02Lab ID: Field Prep:Not Specified D Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 05/30/23 13:01 SRO MDL 6.00 Sample Depth: Serial_No:06122314:43 Page 10 of 32 Methane Ethene Ethane Parameter Result Dilution Factor 3.65 ND ND ug/l ug/l ug/l 1 1 1 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 2.00 0.500 0.500 06/12/23 MW-11SClient ID: 05/22/23 14:58Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329703-03Lab ID: Field Prep:Not Specified Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 06/01/23 18:15 SRO MDL 2.00 0.500 0.500 A A A Column Sample Depth: Serial_No:06122314:43 Page 11 of 32 Carbon Dioxide Parameter Result Dilution Factor 39.2 mg/l 2 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 6.00 06/12/23 MW-11SClient ID: 05/22/23 14:58Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329703-03Lab ID: Field Prep:Not Specified D Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 05/30/23 13:48 SRO MDL 6.00 Sample Depth: Serial_No:06122314:43 Page 12 of 32 Methane Ethene Ethane Parameter Result Dilution Factor 39.3 ND ND ug/l ug/l ug/l 1 1 1 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 2.00 0.500 0.500 06/12/23 MW-2Client ID: 05/22/23 12:30Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329703-04Lab ID: Field Prep:Not Specified Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 06/01/23 18:33 SRO MDL 2.00 0.500 0.500 A A A Column Sample Depth: Serial_No:06122314:43 Page 13 of 32 Carbon Dioxide Parameter Result Dilution Factor 69.9 mg/l 2 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 6.00 06/12/23 MW-2Client ID: 05/22/23 12:30Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329703-04Lab ID: Field Prep:Not Specified D Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 05/30/23 14:05 SRO MDL 6.00 Sample Depth: Serial_No:06122314:43 Page 14 of 32 Methane Ethene Ethane Parameter Result Dilution Factor 864 ND ND ug/l ug/l ug/l 1 1 1 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 2.00 0.500 0.500 06/12/23 MW-7Client ID: 05/22/23 09:44Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329703-05Lab ID: Field Prep:Not Specified Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 06/01/23 18:51 SRO MDL 2.00 0.500 0.500 A A A Column Sample Depth: Serial_No:06122314:43 Page 15 of 32 Carbon Dioxide Parameter Result Dilution Factor 228 mg/l 2 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 6.00 06/12/23 MW-7Client ID: 05/22/23 09:44Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329703-05Lab ID: Field Prep:Not Specified D Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 05/30/23 14:23 SRO MDL 6.00 Sample Depth: Serial_No:06122314:43 Page 16 of 32 Methane Ethene Ethane Parameter Result Dilution Factor 263 ND ND ug/l ug/l ug/l 1 1 1 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 2.00 0.500 0.500 06/12/23 MW-10SClient ID: 05/22/23 14:45Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329703-06Lab ID: Field Prep:Not Specified Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 06/01/23 19:10 SRO MDL 2.00 0.500 0.500 A A A Column Sample Depth: Serial_No:06122314:43 Page 17 of 32 Carbon Dioxide Parameter Result Dilution Factor 166 mg/l 2 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 6.00 06/12/23 MW-10SClient ID: 05/22/23 14:45Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329703-06Lab ID: Field Prep:Not Specified D Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 05/30/23 14:40 SRO MDL 6.00 Sample Depth: Serial_No:06122314:43 Page 18 of 32 Method Blank Analysis Batch Quality Control Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 05/30/23 08:56 117,-Analytical Method: Analytical Date: 06/12/23 Analyst:SRO Carbon Dioxide Parameter Result ND RL 3.00mg/l UnitsQualifier Dissolved Gases by GC - Mansfield Lab for sample(s): 01-06 Batch: WG1784795-3 MDL 3.00 Serial_No:06122314:43 Page 19 of 32 Method Blank Analysis Batch Quality Control Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 05/31/23 09:03 117,-Analytical Method: Analytical Date: 06/12/23 Analyst:SRO Methane Ethene Ethane Parameter Result ND ND ND RL 2.00 0.500 0.500 ug/l ug/l ug/l UnitsQualifier Dissolved Gases by GC - Mansfield Lab for sample(s): 01 Batch: WG1785274-3 MDL 2.00 0.500 0.500 A A A Serial_No:06122314:43 Page 20 of 32 Method Blank Analysis Batch Quality Control Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 06/01/23 15:04 117,-Analytical Method: Analytical Date: 06/12/23 Analyst:SRO Methane Ethene Ethane Parameter Result ND ND ND RL 2.00 0.500 0.500 ug/l ug/l ug/l UnitsQualifier Dissolved Gases by GC - Mansfield Lab for sample(s): 02-06 Batch: WG1786081-3 MDL 2.00 0.500 0.500 A A A Serial_No:06122314:43 Page 21 of 32 Carbon Dioxide 95 -80-120 - Parameter LCS %Recovery LCSD %Recovery %Recovery Limits RPD RPD Limits Dissolved Gases by GC - Mansfield Lab Associated sample(s): 01-06 Batch: WG1784795-2 Lab Control Sample Analysis Batch Quality ControlProject Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 06/12/23 Qual Qual Qual Serial_No:06122314:43 Page 22 of 32 Methane Ethene Ethane 95 87 85 - - - 80-120 80-120 80-120 - - - 25 25 25 Parameter LCS %Recovery LCSD %Recovery %Recovery Limits RPD RPD Limits Dissolved Gases by GC - Mansfield Lab Associated sample(s): 01 Batch: WG1785274-2 Lab Control Sample Analysis Batch Quality ControlProject Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 06/12/23 Qual Qual Qual Column A A A Serial_No:06122314:43 Page 23 of 32 Methane Ethene Ethane 102 89 87 - - - 80-120 80-120 80-120 - - - 25 25 25 Parameter LCS %Recovery LCSD %Recovery %Recovery Limits RPD RPD Limits Dissolved Gases by GC - Mansfield Lab Associated sample(s): 02-06 Batch: WG1786081-2 Lab Control Sample Analysis Batch Quality ControlProject Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052434 L2329703 06/12/23 Qual Qual Qual Column A A A Serial_No:06122314:43 Page 24 of 32 *Values in parentheses indicate holding time in days L2329703-01A L2329703-01B L2329703-01C L2329703-01D L2329703-01E L2329703-02A L2329703-02B L2329703-02C L2329703-02D L2329703-02E L2329703-03A L2329703-03B L2329703-03C L2329703-03D L2329703-03E L2329703-04A L2329703-04B L2329703-04C L2329703-04D L2329703-04E L2329703-05A L2329703-05B L2329703-05C 20ml Vial HCl preserved 20ml Vial HCl preserved 20ml Vial HCl preserved Vial unpreserved 20ml Vial unpreserved 20ml 20ml Vial HCl preserved 20ml Vial HCl preserved 20ml Vial HCl preserved Vial unpreserved 20ml Vial unpreserved 20ml 20ml Vial HCl preserved 20ml Vial HCl preserved 20ml Vial HCl preserved Vial unpreserved 20ml Vial unpreserved 20ml 20ml Vial HCl preserved 20ml Vial HCl preserved 20ml Vial HCl preserved Vial unpreserved 20ml Vial unpreserved 20ml 20ml Vial HCl preserved 20ml Vial HCl preserved 20ml Vial HCl preserved A A A A A A A A A A A A A A A A A A A A A A A NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA NA 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 1.9 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent Absent A Absent Cooler Custody Seal Cooler Information RANDOLPH LF 223052434 DISSGAS(14) DISSGAS(14) DISSGAS(14) DISSGAS-CO2(7) DISSGAS-CO2(7) DISSGAS(14) DISSGAS(14) DISSGAS(14) DISSGAS-CO2(7) DISSGAS-CO2(7) DISSGAS(14) DISSGAS(14) DISSGAS(14) DISSGAS-CO2(7) DISSGAS-CO2(7) DISSGAS(14) DISSGAS(14) DISSGAS(14) DISSGAS-CO2(7) DISSGAS-CO2(7) DISSGAS(14) DISSGAS(14) DISSGAS(14) Project Name: Project Number: L2329703Lab Number: Report Date: Sample Receipt and Container Information Container ID Container Type Cooler Temp deg C Pres Seal Container Information Analysis(*) 06/12/23 Were project specific reporting limits specified?YES Frozen Date/Time Final pH Initial pH Serial_No:06122314:43 Page 25 of 32 *Values in parentheses indicate holding time in days L2329703-05D L2329703-05E L2329703-06A L2329703-06B L2329703-06C L2329703-06D L2329703-06E Vial unpreserved 20ml Vial unpreserved 20ml 20ml Vial HCl preserved 20ml Vial HCl preserved 20ml Vial HCl preserved Vial unpreserved 20ml Vial unpreserved 20ml A A A A A A A NA NA NA NA NA NA NA 1.9 1.9 1.9 1.9 1.9 1.9 1.9 Y Y Y Y Y Y Y Absent Absent Absent Absent Absent Absent Absent RANDOLPH LF 223052434 DISSGAS-CO2(7) DISSGAS-CO2(7) DISSGAS(14) DISSGAS(14) DISSGAS(14) DISSGAS-CO2(7) DISSGAS-CO2(7) Project Name: Project Number: L2329703Lab Number: Report Date: Container ID Container Type Cooler Temp deg C Pres Seal Container Information Analysis(*) 06/12/23 Frozen Date/Time Final pH Initial pH Serial_No:06122314:43 Page 26 of 32 Report Format:DU Report with 'J' Qualifiers GLOSSARY Project Name: Project Number: Lab Number: Report Date: L2329703RANDOLPH LF 223052434 06/12/23 Acronyms DL EDL EMPC EPA LCS LCSD LFB LOD LOQ MDL MS MSD NA NC NDPA/DPA NI NP NR RL RPD SRM STLP TEF TEQ TIC Detection Limit: This value represents the level to which target analyte concentrations are reported as estimated values, when those target analyte concentrations are quantified below the limit of quantitation (LOQ). The DL includes any adjustments from dilutions, concentrations or moisture content, where applicable. (DoD report formats only.) Estimated Detection Limit: This value represents the level to which target analyte concentrations are reported as estimated values, when those target analyte concentrations are quantified below the reporting limit (RL). The EDL includes any adjustments from dilutions, concentrations or moisture content, where applicable. The use of EDLs is specific to the analysis of PAHs using Solid-Phase Microextraction (SPME). Estimated Maximum Possible Concentration: The concentration that results from the signal present at the retention time of an analyte when the ions meet all of the identification criteria except the ion abundance ratio criteria. An EMPC is a worst-case estimate of the concentration. Environmental Protection Agency. Laboratory Control Sample: A sample matrix, free from the analytes of interest, spiked with verified known amounts of analytes or a material containing known and verified amounts of analytes. Laboratory Control Sample Duplicate: Refer to LCS. Laboratory Fortified Blank: A sample matrix, free from the analytes of interest, spiked with verified known amounts of analytes or a material containing known and verified amounts of analytes. Limit of Detection: This value represents the level to which a target analyte can reliably be detected for a specific analyte in a specific matrix by a specific method. The LOD includes any adjustments from dilutions, concentrations or moisture content, where applicable. (DoD report formats only.) Limit of Quantitation: The value at which an instrument can accurately measure an analyte at a specific concentration. The LOQ includes any adjustments from dilutions, concentrations or moisture content, where applicable. (DoD report formats only.) Limit of Quantitation: The value at which an instrument can accurately measure an analyte at a specific concentration. The LOQ includes any adjustments from dilutions, concentrations or moisture content, where applicable. (DoD report formats only.) Method Detection Limit: This value represents the level to which target analyte concentrations are reported as estimated values, when those target analyte concentrations are quantified below the reporting limit (RL). The MDL includes any adjustments from dilutions, concentrations or moisture content, where applicable. Matrix Spike Sample: A sample prepared by adding a known mass of target analyte to a specified amount of matrix sample for which an independent estimate of target analyte concentration is available. For Method 332.0, the spike recovery is calculated using the native concentration, including estimated values. Matrix Spike Sample Duplicate: Refer to MS. Not Applicable. Not Calculated: Term is utilized when one or more of the results utilized in the calculation are non-detect at the parameter's reporting unit. N-Nitrosodiphenylamine/Diphenylamine. Not Ignitable. Non-Plastic: Term is utilized for the analysis of Atterberg Limits in soil. No Results: Term is utilized when 'No Target Compounds Requested' is reported for the analysis of Volatile or Semivolatile Organic TIC only requests. Reporting Limit: The value at which an instrument can accurately measure an analyte at a specific concentration. The RL includes any adjustments from dilutions, concentrations or moisture content, where applicable. Relative Percent Difference: The results from matrix and/or matrix spike duplicates are primarily designed to assess the precision of analytical results in a given matrix and are expressed as relative percent difference (RPD). Values which are less than five times the reporting limit for any individual parameter are evaluated by utilizing the absolute difference between the values; although the RPD value will be provided in the report. Standard Reference Material: A reference sample of a known or certified value that is of the same or similar matrix as the associated field samples. Semi-dynamic Tank Leaching Procedure per EPA Method 1315. Toxic Equivalency Factors: The values assigned to each dioxin and furan to evaluate their toxicity relative to 2,3,7,8-TCDD. Toxic Equivalent: The measure of a sample's toxicity derived by multiplying each dioxin and furan by its corresponding TEF and then summing the resulting values. Tentatively Identified Compound: A compound that has been identified to be present and is not part of the target compound list (TCL) for the method and/or program. All TICs are qualitatively identified and reported as estimated concentrations. - - - - - - - - - - - - - - - - - - - - - - - - Serial_No:06122314:43 Page 27 of 32 Report Format:DU Report with 'J' Qualifiers Project Name: Project Number: Lab Number: Report Date: L2329703RANDOLPH LF 223052434 06/12/23 Terms Analytical Method: Both the document from which the method originates and the analytical reference method. (Example: EPA 8260B is shown as 1,8260B.) The codes for the reference method documents are provided in the References section of the Addendum. Chlordane: The target compound Chlordane (CAS No. 57-74-9) is reported for GC ECD analyses. Per EPA,this compound "refers to a mixture of chlordane isomers, other chlorinated hydrocarbons and numerous other components." (Reference: USEPA Toxicological Review of Chlordane, In Support of Summary Information on the Integrated Risk Information System (IRIS), December 1997.) Difference: With respect to Total Oxidizable Precursor (TOP) Assay analysis, the difference is defined as the Post-Treatment value minus the Pre-Treatment value. Final pH: As it pertains to Sample Receipt & Container Information section of the report, Final pH reflects pH of container determined after adjustment at the laboratory, if applicable. If no adjustment required, value reflects Initial pH. Frozen Date/Time: With respect to Volatile Organics in soil, Frozen Date/Time reflects the date/time at which associated Reagent Water- preserved vials were initially frozen. Note: If frozen date/time is beyond 48 hours from sample collection, value will be reflected in 'bold'. Gasoline Range Organics (GRO): Gasoline Range Organics (GRO) results include all chromatographic peaks eluting from Methyl tert butyl ether through Naphthalene, with the exception of GRO analysis in support of State of Ohio programs, which includes all chromatographic peaks eluting from Hexane through Dodecane. Initial pH: As it pertains to Sample Receipt & Container Information section of the report, Initial pH reflects pH of container determined upon receipt, if applicable. PAH Total: With respect to Alkylated PAH analyses, the 'PAHs, Total' result is defined as the summation of results for all or a subset of the following compounds: Naphthalene, C1-C4 Naphthalenes, 2-Methylnaphthalene, 1-Methylnaphthalene, Biphenyl, Acenaphthylene, Acenaphthene, Fluorene, C1-C3 Fluorenes, Phenanthrene, C1-C4 Phenanthrenes/Anthracenes, Anthracene, Fluoranthene, Pyrene, C1-C4 Fluoranthenes/Pyrenes, Benz(a)anthracene, Chrysene, C1-C4 Chrysenes, Benzo(b)fluoranthene, Benzo(j)+(k)fluoranthene, Benzo(e)pyrene, Benzo(a)pyrene, Perylene, Indeno(1,2,3-cd)pyrene, Dibenz(ah)+(ac)anthracene, Benzo(g,h,i)perylene. If a 'Total' result is requested, the results of its individual components will also be reported. PFAS Total: With respect to PFAS analyses, the 'PFAS, Total (5)' result is defined as the summation of results for: PFHpA, PFHxS, PFOA, PFNA and PFOS. In addition, the 'PFAS, Total (6)' result is defined as the summation of results for: PFHpA, PFHxS, PFOA, PFNA, PFDA and PFOS. For MassDEP DW compliance analysis only, the 'PFAS, Total (6)' result is defined as the summation of results at or above the RL. Note: If a 'Total' result is requested, the results of its individual components will also be reported. Total: With respect to Organic analyses, a 'Total' result is defined as the summation of results for individual isomers or Aroclors. If a 'Total' result is requested, the results of its individual components will also be reported. This is applicable to 'Total' results for methods 8260, 8081 and 8082. Data Qualifiers A B C D E F G H I J - - - - - - - - - - Spectra identified as "Aldol Condensates" are byproducts of the extraction/concentration procedures when acetone is introduced in the process. The analyte was detected above the reporting limit in the associated method blank. Flag only applies to associated field samples that have detectable concentrations of the analyte at less than ten times (10x) the concentration found in the blank. For MCP-related projects, flag only applies to associated field samples that have detectable concentrations of the analyte at less than ten times (10x) the concentration found in the blank. For DOD-related projects, flag only applies to associated field samples that have detectable concentrations of the analyte at less than ten times (10x) the concentration found in the blank AND the analyte was detected above one-half the reporting limit (or above the reporting limit for common lab contaminants) in the associated method blank. For NJ- Air-related projects, flag only applies to associated field samples that have detectable concentrations of the analyte above the reporting limit. For NJ-related projects (excluding Air), flag only applies to associated field samples that have detectable concentrations of the analyte, which was detected above the reporting limit in the associated method blank or above five times the reporting limit for common lab contaminants (Phthalates, Acetone, Methylene Chloride, 2-Butanone). Co-elution: The target analyte co-elutes with a known lab standard (i.e. surrogate, internal standards, etc.) for co-extracted analyses. Concentration of analyte was quantified from diluted analysis. Flag only applies to field samples that have detectable concentrations of the analyte. Concentration of analyte exceeds the range of the calibration curve and/or linear range of the instrument. The ratio of quantifier ion response to qualifier ion response falls outside of the laboratory criteria. Results are considered to be an estimated maximum concentration. The concentration may be biased high due to matrix interferences (i.e, co-elution) with non-target compound(s). The result should be considered estimated. The analysis of pH was performed beyond the regulatory-required holding time of 15 minutes from the time of sample collection. The lower value for the two columns has been reported due to obvious interference. Estimated value. The Target analyte concentration is below the quantitation limit (RL), but above the Method Detection Limit (MDL) or Estimated Detection Limit (EDL) for SPME-related analyses. This represents an estimated concentration for Tentatively 1 The reference for this analyte should be considered modified since this analyte is absent from the target analyte list of the original method. Footnotes Serial_No:06122314:43 Page 28 of 32 Report Format:DU Report with 'J' Qualifiers Project Name: Project Number: Lab Number: Report Date: L2329703RANDOLPH LF 223052434 06/12/23 Data Qualifiers M ND NJ P Q R RE S V Z - - - - - - - - - - Identified Compounds (TICs). Reporting Limit (RL) exceeds the MCP CAM Reporting Limit for this analyte. Not detected at the method detection limit (MDL) for the sample, or estimated detection limit (EDL) for SPME-related analyses. Presumptive evidence of compound. This represents an estimated concentration for Tentatively Identified Compounds (TICs), where the identification is based on a mass spectral library search. The RPD between the results for the two columns exceeds the method-specified criteria. The quality control sample exceeds the associated acceptance criteria. For DOD-related projects, LCS and/or Continuing Calibration Standard exceedences are also qualified on all associated sample results. Note: This flag is not applicable for matrix spike recoveries when the sample concentration is greater than 4x the spike added or for batch duplicate RPD when the sample concentrations are less than 5x the RL. (Metals only.) Analytical results are from sample re-analysis. Analytical results are from sample re-extraction. Analytical results are from modified screening analysis. The surrogate associated with this target analyte has a recovery outside the QC acceptance limits. (Applicable to MassDEP DW Compliance samples only.) The batch matrix spike and/or duplicate associated with this target analyte has a recovery/RPD outside the QC acceptance limits. (Applicable to MassDEP DW Compliance samples only.) Serial_No:06122314:43 Page 29 of 32 Alpha Analytical performs services with reasonable care and diligence normal to the analytical testing laboratory industry. In the event of an error, the sole and exclusive responsibility of Alpha Analytical shall be to re-perform the work at it's own expense. In no event shall Alpha Analytical be held liable for any incidental, consequential or special damages, including but not limited to, damages in any way connected with the use of, interpretation of, information or analysis provided by Alpha Analytical. We strongly urge our clients to comply with EPA protocol regarding sample volume, preservation, cooling, containers, sampling procedures, holding time and splitting of samples in the field. LIMITATION OF LIABILITIES 117 Technical Guidance for the Natural Attenuation Indicators: Methane, Ethane, and Ethene, EPA-NE, Revision 1, February 21, 2002 and Sample Preparation & Calculations for Dissolved Gas Analysis in Water Samples using a GC Headspace Equilibration Technique, EPA RSKSOP-175, Revision 2, May 2004. Project Name: Project Number: Lab Number: Report Date: L2329703RANDOLPH LF 223052434 REFERENCES 06/12/23 Serial_No:06122314:43 Page 30 of 32 Alpha Analytical, Inc.ID No.:17873 Company-wide Revision 19 Quality Assurance Published Date: 4/2/2021 1:14:23 PM Certificate/Approval Program Summary Page 1 of 1 Document Type: Form Pre-Qualtrax Document ID: 08-113 Certification Information The following analytes are not included in our Primary NELAP Scope of Accreditation: Westborough Facility EPA 624/624.1: m/p-xylene, o-xylene, Naphthalene EPA 625/625.1: alpha-Terpineol EPA 8260C/8260D: NPW: 1,2,4,5-Tetramethylbenzene; 4-Ethyltoluene, Azobenzene; SCM: Iodomethane (methyl iodide), 1,2,4,5-Tetramethylbenzene; 4-Ethyltoluene. EPA 8270D/8270E: NPW: Dimethylnaphthalene,1,4-Diphenylhydrazine, alpha-Terpineol; SCM: Dimethylnaphthalene,1,4-Diphenylhydrazine. SM4500: NPW: Amenable Cyanide; SCM: Total Phosphorus, TKN, NO2, NO3. Mansfield Facility SM 2540D: TSS EPA 8082A: NPW: PCB: 1, 5, 31, 87,101, 110, 141, 151, 153, 180, 183, 187. EPA TO-15: Halothane, 2,4,4-Trimethyl-2-pentene, 2,4,4-Trimethyl-1-pentene, Thiophene, 2-Methylthiophene, 3-Methylthiophene, 2-Ethylthiophene, 1,2,3-Trimethylbenzene, Indan, Indene, 1,2,4,5-Tetramethylbenzene, Benzothiophene, 1-Methylnaphthalene. Biological Tissue Matrix: EPA 3050B The following analytes are included in our Massachusetts DEP Scope of Accreditation Westborough Facility: Drinking Water EPA 300.0: Chloride, Nitrate-N, Fluoride, Sulfate; EPA 353.2: Nitrate-N, Nitrite-N; SM4500NO3-F: Nitrate-N, Nitrite-N; SM4500F-C, SM4500CN-CE, EPA 180.1, SM2130B, SM4500Cl-D, SM2320B, SM2540C, SM4500H-B, SM4500NO2-B EPA 332: Perchlorate; EPA 524.2: THMs and VOCs; EPA 504.1: EDB, DBCP. Microbiology: SM9215B; SM9223-P/A, SM9223B-Colilert-QT,SM9222D. Non-Potable Water SM4500H,B, EPA 120.1, SM2510B, SM2540C, SM2320B, SM4500CL-E, SM4500F-BC, SM4500NH3-BH: Ammonia-N and Kjeldahl-N, EPA 350.1: Ammonia-N, LACHAT 10-107-06-1-B: Ammonia-N, EPA 351.1, SM4500NO3-F, EPA 353.2: Nitrate-N, SM4500P-E, SM4500P-B, E, SM4500SO4-E, SM5220D, EPA 410.4, SM5210B, SM5310C, SM4500CL-D, EPA 1664, EPA 420.1, SM4500-CN-CE, SM2540D, EPA 300: Chloride, Sulfate, Nitrate. EPA 624.1: Volatile Halocarbons & Aromatics, EPA 608.3: Chlordane, Toxaphene, Aldrin, alpha-BHC, beta-BHC, gamma-BHC, delta-BHC, Dieldrin, DDD, DDE, DDT, Endosulfan I, Endosulfan II, Endosulfan sulfate, Endrin, Endrin Aldehyde, Heptachlor, Heptachlor Epoxide, PCBs EPA 625.1: SVOC (Acid/Base/Neutral Extractables), EPA 600/4-81-045: PCB-Oil. Microbiology: SM9223B-Colilert-QT; Enterolert-QT, SM9221E, EPA 1600, EPA 1603, SM9222D. Mansfield Facility: Drinking Water EPA 200.7: Al, Ba, Cd, Cr, Cu, Fe, Mn, Ni, Na, Ag, Ca, Zn. EPA 200.8: Al, Sb, As, Ba, Be, Cd, Cr, Cu, Pb, Mn, Ni, Se, Ag, TL, Zn. EPA 245.1 Hg. EPA 522, EPA 537.1. Non-Potable Water EPA 200.7: Al, Sb, As, Be, Cd, Ca, Cr, Co, Cu, Fe, Pb, Mg, Mn, Mo, Ni, K, Se, Ag, Na, Sr, TL, Ti, V, Zn. EPA 200.8: Al, Sb, As, Be, Cd, Cr, Cu, Fe, Pb, Mn, Ni, K, Se, Ag, Na, TL, Zn. EPA 245.1 Hg. SM2340B For a complete listing of analytes and methods, please contact your Alpha Project Manager. Serial_No:06122314:43 Page 31 of 32 Serial_No:06122314:43 Page 32 of 32 Cover ANALYTICAL RESULTS PERFORMED BY Pace Analytical Gulf Coast 7979 Innovation Park Dr. Baton Rouge, LA 70820 (225) 769-4900 Report Date 06/13/2023 Report # 223052466 9999999999 Project Randolph Co 31404568.018 Samples Collected 5/22/23 - 5/23/23 Deliver To Additional Recipients Darren Cox Matthew Scheidt, WSP WSP / Golder 5B Oak Branch Dr Greensboro, NC 27407 LELAP Certificate Number: 01955 A2LA Accredited (DoD ELAP-QSM 5.4) Certificate Number: 6429.01 Page 1 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 Laboratory Endorsement Sample analysis was performed in accordance with approved methodologies provided by the Environmental Protection Agency or other recognized agencies. The samples and their corresponding extracts will be maintained for a period of 30 days unless otherwise arranged. Following this retention period the samples will be disposed in accordance with Pace Gulf Coast's Standard Operating Procedures. Common Abbreviations that may be Utilized in this Report ND Indicates the result was Not Detected at the specified reporting limit NO Indicates the sample did not ignite when preliminary test performed for EPA Method 1030 DO Indicates the result was Diluted Out MI Indicates the result was subject to Matrix Interference TNTC Indicates the result was Too Numerous To Count SUBC Indicates the analysis was Sub-Contracted FLD Indicates the analysis was performed in the Field DL Detection Limit LOD Limit of Detection LOQ Limit of Quantitation RE Re-analysis CF HPLC or GC Confirmation 00:01 Reported as a time equivalent to 12:00 AM Reporting Flags that may be Utilized in this Report J or I Indicates the result is between the MDL and LOQ J DOD flag on analyte in the parent sample for MS/MSD outside acceptance criteria U Indicates the compound was analyzed for but not detected B or V Indicates the analyte was detected in the associated Method Blank Q Indicates a non-compliant QC Result (See Q Flag Application Report) * Indicates a non-compliant or not applicable QC recovery or RPD – see narrative E Organics - The result is estimated because it exceeded the instrument calibration range E Metals - % diference for the serial dilution is > 10% L Reporting Limits adjusted to meet risk-based limit. P RPD between primary and confirmation result is greater than 40 DL Diluted analysis – when appended to Client Sample ID Sample receipt at Pace Gulf Coast is documented through the attached chain of custody. In accordance with NELAC, this report shall be reproduced only in full and with the written permission of Pace Gulf Coast. The results contained within this report relate only to the samples reported. The documented results are presented within this report. This report pertains only to the samples listed in the Report Sample Summary and should be retained as a permanent record thereof. The results contained within this report are intended for the use of the client. Any unauthorized use of the information contained in this report is prohibited. I certify that this data package is in compliance with The NELAC Institute (TNI) Standard 2009 and terms and conditions of the contract and Statement of Work both technically and for completeness, for other than the conditions in the case narrative. Release of the data contained in this hardcopy data package and in the computer readable data submitted has been authorized by the Quality Assurance Manager or his/her designee, as verified by the following signature. Estimated uncertainty of measurement is available upon request. This report is in compliance with the DOD QSM as specified in the contract if applicable. Authorized Signature Pace Gulf Coast Report 223052466 Page 2 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 Certifications Certification Certification Number Page 3 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 Case Narrative Client: Golder Associates - NC Report: 223052466 Pace Analytical Gulf Coast received and analyzed the sample(s) listed on the Report Sample Summary page of this report. Receipt of the sample(s) is documented by the attached chain of custody. This applies only to the sample(s) listed in this report. No sample integrity or quality control exceptions were identified unless noted below. VOLATILES MASS SPECTROMETRY MSV: Batch 52880 in the Opening CCV, several non target analytes failed but all target analytes passed. MISCELLANEOUS See subcontract laboratory report case narrative. Page 4 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 Sample Summary Lab ID Client ID Matrix Collect Date Receive Date 22305246601 MW-11S Bubble Strip 5/22/23 14:45 5/24/23 09:56 22305246602 MW-8 Bubble Strip 5/22/23 10:50 5/24/23 09:56 22305246603 MW-3 Bubble Strip 5/22/23 13:20 5/24/23 09:56 22305246604 MW-7 Bubble Strip 5/22/23 09:44 5/24/23 09:56 22305246605 MW-2 Bubble Strip 5/22/23 12:30 5/24/23 09:56 22305246606 MW-10S Bubble Strip 5/22/23 14:45 5/24/23 09:56 22305246607 MW-10D Bubble Strip 5/23/23 00:01 5/24/23 09:56 22305246608 MW-10D Water 5/23/23 00:01 5/24/23 09:56 Page 5 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 Detect Summary Results and Detection Limits are adjusted for dilution and moisture when applicable AM23G Lab ID Client ID Parameter Units Result Dil. %Moist 22305246608 MW-10D Acetic Acid mg/L 8.4 10 NA 22305246608 MW-10D Formic Acid mg/L 49 10 NA 22305246608 MW-10D Lactic Acid mg/L 0.73J 10 NA 22305246608 MW-10D Propionic Acid mg/L 1.7J 10 NA EPA 9034 Lab ID Client ID Parameter Units Result Dil. %Moist 22305246608 MW-10D Sulfide mg/L 4.0 1 NA EPA 9056A Lab ID Client ID Parameter Units Result Dil. %Moist 22305246608 MW-10D Chloride mg/L 175 20 NA 22305246608 MW-10D Sulfate mg/L 2.34 2 NA EPA 9060A Lab ID Client ID Parameter Units Result Dil. %Moist 22305246608 MW-10D Total Organic Carbon mg/L 17.4 1 NA HACH 8000 Lab ID Client ID Parameter Units Result Dil. %Moist 22305246608 MW-10D COD mg/L 6.3 1 NA SM 2320 B-2011 Lab ID Client ID Parameter Units Result Dil. %Moist 22305246608 MW-10D Total Alkalinity mg/L CaCO3 465 1 NA SM 3500-Fe B-2011 Lab ID Client ID Parameter Units Result Dil. %Moist 22305246608 MW-10D Ferrous Iron mg/L 0.461 1 NA EPA 8260B Lab ID Client ID Parameter Units Result Dil. %Moist 22305246608 MW-10D 1,1-Dichloroethane ug/L 2.21J 1 NA 22305246608 MW-10D Vinyl chloride ug/L 0.273J 1 NA AM20GAX Lab ID Client ID Parameter Units Result Dil. %Moist 22305246602 MW-8 Hydrogen nM 9.0 1 NA 22305246603 MW-3 Hydrogen nM 7.1 1 NA Page 6 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 Detect Summary (Continued) Results and Detection Limits are adjusted for dilution and moisture when applicable AM20GAX Lab ID Client ID Parameter Units Result Dil. %Moist 22305246604 MW-7 Hydrogen nM 8.9 1 NA 22305246605 MW-2 Hydrogen nM 5.7 1 NA 22305246606 MW-10S Hydrogen nM 5.7 1 NA 22305246607 MW-10D Hydrogen nM 6.8 1 NA Page 7 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 Sample Results Sample Results MW-11S MW-11S Collect Date 05/22/2023 14:45 Lab ID 22305246601 Receive Date 05/24/2023 09:56 Matrix Bubble Strip AM20GAX AM20GAX Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 06/02/23 14:50 766934 BDP NA CAS# Parameter Result DL LOQ Units 1333-74-0 Hydrogen 0.49U 0.49 1.9 nM MW-8 MW-8 Collect Date 05/22/2023 10:50 Lab ID 22305246602 Receive Date 05/24/2023 09:56 Matrix Bubble Strip AM20GAX AM20GAX Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 06/02/23 15:03 766934 BDP NA CAS# Parameter Result DL LOQ Units 1333-74-0 Hydrogen 9.0 0.49 1.9 nM MW-3 MW-3 Collect Date 05/22/2023 13:20 Lab ID 22305246603 Receive Date 05/24/2023 09:56 Matrix Bubble Strip AM20GAX AM20GAX Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 06/02/23 15:20 766934 BDP NA CAS# Parameter Result DL LOQ Units 1333-74-0 Hydrogen 7.1 0.49 1.9 nM MW-7 MW-7 Collect Date 05/22/2023 09:44 Lab ID 22305246604 Receive Date 05/24/2023 09:56 Matrix Bubble Strip AM20GAX AM20GAX Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 06/02/23 15:33 766934 BDP NA CAS# Parameter Result DL LOQ Units 1333-74-0 Hydrogen 8.9 0.49 1.9 nM Page 8 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 Sample Results MW-2 MW-2 Collect Date 05/22/2023 12:30 Lab ID 22305246605 Receive Date 05/24/2023 09:56 Matrix Bubble Strip AM20GAX AM20GAX Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 06/02/23 15:47 766934 BDP NA CAS# Parameter Result DL LOQ Units 1333-74-0 Hydrogen 5.7 0.49 1.9 nM MW-10S MW-10S Collect Date 05/22/2023 14:45 Lab ID 22305246606 Receive Date 05/24/2023 09:56 Matrix Bubble Strip AM20GAX AM20GAX Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 06/02/23 16:12 766934 BDP NA CAS# Parameter Result DL LOQ Units 1333-74-0 Hydrogen 5.7 0.49 1.9 nM MW-10D MW-10D Collect Date 05/23/2023 00:01 Lab ID 22305246607 Receive Date 05/24/2023 09:56 Matrix Bubble Strip AM20GAX AM20GAX Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 06/02/23 16:24 766934 BDP NA CAS# Parameter Result DL LOQ Units 1333-74-0 Hydrogen 6.8 0.49 1.9 nM MW-10D MW-10D Collect Date 05/23/2023 00:01 Lab ID 22305246608 Receive Date 05/24/2023 09:56 Matrix Water EPA 8260B EPA 8260B Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 14:24 766594 KN1 NA CAS# Parameter Result DL LOQ Units 75-34-3 1,1-Dichloroethane 2.21J 0.200 5.00 ug/L 127-18-4 Tetrachloroethene 0.200U 0.200 5.00 ug/L 79-01-6 Trichloroethene 0.200U 0.200 5.00 ug/L Page 9 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 Sample Results MW-10D Collect Date 05/23/2023 00:01 Lab ID 22305246608 Receive Date 05/24/2023 09:56 Matrix Water EPA 8260B (Continued) EPA 8260B (Continued) Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 14:24 766594 KN1 NA CAS# Parameter Result DL LOQ Units 75-01-4 Vinyl chloride 0.273J 0.200 2.00 ug/L CAS# Surrogate Conc Spiked Conc Rec Units %Recovery %Rec Limits 460-00-4 4-Bromofluorobenzene 50 51.1 ug/L 102 78 - 130 1868-53-7 Dibromofluoromethane 50 58.9 ug/L 118 77 - 127 2037-26-5 Toluene d8 50 52 ug/L 104 76 - 134 17060-07-0 1,2-Dichloroethane-d4 50 57.9 ug/L 116 71 - 127 AM23G AM23G *Results and limits are adjusted for dilution. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 10 05/31/23 02:15 766672 LHM NA CAS# Parameter Result DL LOQ Units 64-19-7 Acetic Acid 8.4 1.2 5.0 mg/L 107-92-6 Butyric Acid 0.58U 0.58 5.0 mg/L 64-18-6 Formic Acid 49 0.55 5.0 mg/L 142-62-1 Hexanoic Acid 0.58U 0.58 5.0 mg/L 646-07-1 i-Hexanoic Acid 0.56U 0.56 5.0 mg/L 503-74-2 i-Pentanoic Acid 0.61U 0.61 5.0 mg/L 50-21-5 Lactic Acid 0.73J 0.53 5.0 mg/L 109-52-4 Pentanoic Acid 0.56U 0.56 5.0 mg/L 79-09-4 Propionic Acid 1.7J 0.53 5.0 mg/L 127-17-3 Pyruvic Acid 0.60U 0.60 5.0 mg/L EPA 9034 EPA 9034 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/26/23 13:00 766574 RYC NA CAS# Parameter Result DL LOQ Units 18496-25-8 Sulfide 4.0 1.1 2.0 mg/L EPA 9056A EPA 9056A *Results and limits are adjusted for dilution. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 2 05/24/23 14:12 766504 CS NA CAS# Parameter Result DL LOQ Units 14797-55-8 Nitrate 0.200U 0.200 0.400 mg/L-N 14808-79-8 Sulfate 2.34 0.200 0.400 mg/L Page 10 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 Sample Results MW-10D Collect Date 05/23/2023 00:01 Lab ID 22305246608 Receive Date 05/24/2023 09:56 Matrix Water - EPA 9056A *Results and limits are adjusted for dilution. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 20 05/25/23 12:32 766543 CS NA CAS# Parameter Result DL LOQ Units 16887-00-6 Chloride 175 1.00 4.00 mg/L EPA 9060A EPA 9060A *Results are reported on a dry weight basis. Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/31/23 15:16 766751 CCL NA CAS# Parameter Result DL LOQ Units C-012 Total Organic Carbon 17.4 0.300 2.00 mg/L HACH 8000 HACH 8000 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/25/23 13:36 766485 RYC NA CAS# Parameter Result DL LOQ Units C-004 COD 6.3 1.7 5.0 mg/L SM 2320 B-2011 SM 2320 B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 06/02/23 14:01 766937 MMP NA CAS# Parameter Result DL LOQ Units 000000-00-5 Total Alkalinity 465 0.26 1.0 mg/L CaCO3 SM 3500-Fe B-2011 SM 3500-Fe B-2011 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA NA 1 05/24/23 15:01 766461 RYC NA CAS# Parameter Result DL LOQ Units WET-045 Ferrous Iron 0.461 0.014 0.050 mg/L Page 11 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 Sample Results MW-10D Collect Date 05/23/2023 00:01 Lab ID 22305246608 Receive Date 05/24/2023 09:56 Matrix Water SM 5210 B-2016 SM 5210 B-2016 Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture 05/25/23 12:52 766466 BOD PREP 1 05/25/23 12:52 766700 MLG NA CAS# Parameter Result DL LOQ Units C-002 BOD 3U 3 3 mg/L Subcontract Work Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/13/23 09:14 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-001 Ship Result * mg/L - Subcontract Work Prep Date Prep Batch Prep Method Dilution Run Date Run Batch Analyst %Moisture NA NA Subcontract Work 1 06/13/23 09:14 NA CW NA CAS# Parameter Result DL LOQ Units SHIP-002 Ship Result * mg/L Page 12 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 QC Summary GC/MS Volatiles QC Summary GC/MS Volatiles Analytical Batch 766594 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766594 2487626 MB NA 05/26/23 12:32 Water LCS766594 2487627 LCS NA 05/26/23 11:11 Water EPA 8260B Units Result ug/L DL Spike Added Result %R Control Limits%R 1,1-Dichloroethane 75-34-3 0.200U 0.200 50.0 48.1 96 74 - 127 Tetrachloroethene 127-18-4 0.200U 0.200 50.0 47.3 95 68 - 128 Trichloroethene 79-01-6 0.200U 0.200 50.0 47.8 96 76 - 129 Vinyl chloride 75-01-4 0.200U 0.200 50.0 44.5 89 68 - 132 Surrogate CAS# Rec %R Added Rec %R Limits 1,2-Dichloroethane-d4 17060-07-0 55 110 50 55 110 71 - 127 4-Bromofluorobenzene 460-00-4 52.6 105 50 55 110 78 - 130 Dibromofluoromethane 1868-53-7 57.9 116 50 55.5 111 77 - 127 Toluene d8 2037-26-5 54.4 109 50 51.6 103 76 - 134 Page 13 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 General Chemistry QC Summary General Chemistry Analytical Batch 766937 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766937 2489326 MB NA 06/02/23 14:01 Water LCS766937 2489327 LCS NA 06/02/23 14:01 Water LCSD766937 2489328 LCSD NA 06/02/23 14:01 Water SM 2320 B-2011 Units Result mg/L CaCO3 DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Total Alkalinity 000000-00-5 0.26U 0.26 200 202 101 90 - 110 200 201 101 0 11 Analytical Batch 766700 Prep Batch 766466 Prep Method BOD PREP Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766466 2487053 MB 05/24/23 12:13 05/24/23 12:13 Water LCS766466 2487055 LCS 05/24/23 12:13 05/24/23 12:13 Water SM 5210 B-2016 Units Result mg/L DL Spike Added Result %R Control Limits%R BOD C-002 3U 3 198 171 86 84.5 - 115.5 Analytical Batch 766574 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766574 2487581 MB NA 05/26/23 13:00 Water LCS766574 2487582 LCS NA 05/26/23 13:00 Water LCSD766574 2487583 LCSD NA 05/26/23 13:00 Water EPA 9034 Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Sulfide 18496-25-8 1.1U 1.1 25.0 25.4 102 50 - 120 25.0 25.6 103 1 25 Analytical Batch 766485 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766485 2487104 MB NA 05/25/23 13:35 Water LCS766485 2487105 LCS NA 05/25/23 13:35 Water LCSD766485 2487106 LCSD NA 05/25/23 13:35 Water HACH 8000 Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit COD C-004 1.7U 1.7 75.0 74.0 99 90 - 110 75.0 76.2 102 3 20 Analytical Batch 766461 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766461 2486996 MB NA 05/24/23 15:00 Water LCS766461 2486997 LCS NA 05/24/23 15:00 Water LCSD766461 2486998 LCSD NA 05/24/23 15:01 Water SM 3500-Fe B-2011 Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Ferrous Iron WET-045 0.014U 0.014 1.00 0.999 100 89.5 - 110.5 1.00 1.05 105 5 20 Page 14 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 General Chemistry QC Summary Analytical Batch 766672 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766672 2488129 MB NA 05/30/23 14:58 Water LCS766672 2488130 LCS NA 05/30/23 16:49 Water LCSD766672 2488131 LCSD NA 05/30/23 17:40 Water AM23G Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Acetic Acid 64-19-7 0.12U 0.12 2.0 2.2 108 70 - 130 2.0 2.2 108 0 20 Butyric Acid 107-92-6 0.058U 0.058 2.0 2.1 105 70 - 130 2.0 2.1 107 2 20 Formic Acid 64-18-6 0.055U 0.055 2.0 2.0 98 70 - 130 2.0 2.0 100 3 20 Hexanoic Acid 142-62-1 0.058U 0.058 2.0 2.0 98 70 - 130 2.0 2.0 102 3 20 i-Hexanoic Acid 646-07-1 0.056U 0.056 2.0 2.1 105 70 - 130 2.0 2.1 107 2 20 i-Pentanoic Acid 503-74-2 0.061U 0.061 2.0 2.1 104 70 - 130 2.0 2.1 105 1 20 Lactic Acid 50-21-5 0.053U 0.053 2.0 2.2 109 70 - 130 2.0 2.2 112 2 20 Pentanoic Acid 109-52-4 0.056U 0.056 2.0 2.1 104 70 - 130 2.0 2.2 108 4 20 Propionic Acid 79-09-4 0.053U 0.053 2.0 2.1 106 70 - 130 2.0 2.1 107 1 20 Pyruvic Acid 127-17-3 0.060U 0.060 2.0 2.0 101 70 - 130 2.0 2.1 104 4 20 Analytical Batch 766504 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766504 2487184 MB NA 05/24/23 11:02 Water LCS766504 2487185 LCS NA 05/24/23 11:20 Water LCSD766504 2487186 LCSD NA 05/24/23 11:37 Water EPA 9056A Units Result mg/L-N DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Nitrate 14797-55-8 0.100U 0.100 2.50 2.41 96 80 - 120 2.50 2.41 97 0 15 Sulfate 14808-79-8 0.100U 0.100 2.50 2.46 98 80 - 120 2.50 2.42 97 2 15 Analytical Batch 766543 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766543 2487507 MB NA 05/25/23 10:51 Water LCS766543 2487508 LCS NA 05/25/23 11:08 Water LCSD766543 2487509 LCSD NA 05/25/23 11:25 Water EPA 9056A Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Chloride 16887-00-6 0.050U 0.050 2.50 2.24 90 80 - 120 2.50 2.24 89 0 15 Analytical Batch 766751 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766751 2488438 MB NA 05/31/23 11:09 Water LCS766751 2488439 LCS NA 05/31/23 10:20 Water LCSD766751 2488440 LCSD NA 05/31/23 10:44 Water EPA 9060A Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Total Organic Carbon C-012 0.300U 0.300 50.0 50.5 101 90 - 110 50.0 50.7 101 0 20 Analytical Batch 766751 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MW-10D 22305246608 SAMPLE NA 05/31/2023 15:16 Water 2486942MS 2488450 MS NA 05/31/23 17:13 Water 2486942MSD 2488451 MSD NA 05/31/23 17:49 Water EPA 9060A Units Result mg/L DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Total Organic Carbon C-012 17.4 0.300 50.0 64.3 94 80 - 120 50.0 171 307* 91* 20 Page 15 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Report#: 223052466 Project ID: Randolph Co 31404568.018 Report Date: 06/13/2023 General Chromatography QC Summary General Chromatography Analytical Batch 766934 Client ID Lab ID Sample Type Prep Date Analysis Date Matrix MB766934 2489315 MB NA 06/02/23 14:30 Bubble Strip LCS766934 2489316 LCS NA 06/02/23 13:21 Bubble Strip LCSD766934 2489317 LCSD NA 06/02/23 14:05 Bubble Strip AM20GAX Units Result nM DL Spike Added Result %R Control Limits%R Spike Added Result %R RPD RPD Limit Hydrogen 1333-74-0 0.49U 0.49 12 12 105 70 - 130 12 12 104 1 20 Page 16 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Page 17 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 Page 18 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 SAMPLE RECEIVING CHECKLIST *223052466* SAMPLE DELIVERY GROUP 223052466 Client PM RWe Transport Method Golder - NC - Golder Associates - NC Profile Number Received By 300930 Perkins, Brennan McCune, Dodie N. Line Item(s)Receive Date(s) 1 - Hydrogen 3 - Waters 05/24/23 CHECKLIST YES NO Samples received with proper thermal preservation? Radioactivity is <1600 cpm? If no, record cpm value in notes section. COC relinquished and complete (including sampleIDs, collect times, and sampler)? All containers received in good condition and within hold time? All sample labels and containers received match the chain of custody? Preservative added to any containers? If received, was headspace for VOC water containers < 6mm? Samples collected in containers provided by Pace Gulf Coast? COOLERS Airbill Thermometer ID:E43 Temp oC 772227747980 0.4 DISCREPANCIES None LAB PRESERVATIONS None NOTES NO SAMPLE COLLECT TIMES LISTED FOR SAMPLES -07 & -08 Revision 1.6 Page 1 of 1 Page 19 of 1906/13/2023 10:01Pace Gulf Coast Report#: 223052466 L2329700 Pace Analytical Gulf Coast 223052466 RANDOLPH LF Client: Project Name: Project Number: 06/05/23 320 Forbes Boulevard, Mansfield, MA 02048-1806 Lab Number: Report Date: 508-822-9300 (Fax) 508-822-3288 800-624-9220 - www.alphalab.com 7979 Innovation Park Drive Baton Rouge, LA 70820 Ruth WelshATTN: ANALYTICAL REPORT Certifications & Approvals: MA (M-MA030), NH NELAP (2062), CT (PH-0825), DoD (L2474), FL (E87814), IL (200081), IN (C-MA-04), KY (KY98046), LA (85084), ME (MA00030), MD (350), MI (99110) , NJ (MA015), NY (11627), NC (685), OH (CL106), OR (MA-0262), PA (68-02089), RI (LAO00299), TX (T104704419), VT (VT-0015), VA (460194), WA (C954), US Army Corps of Engineers, USDA (Permit #525-23-107-88708), USFWS (Permit #206964). (337) 439-5000Phone: The original project report/data package is held by Alpha Analytical. This report/data package is paginated and should be reproduced only in its entirety. Alpha Analytical holds no responsibility for results and/or data that are not consistent with the original. Serial_No:06052319:30 Page 1 of 20 L2329700-01 Alpha Sample ID MW-10D Client ID Not Specified Sample Location RANDOLPH LF 223052466 Project Name: Project Number: Lab Number: Report Date: L2329700 06/05/23 05/23/23 00:01 Collection Date/TimeMatrix Receive Date WATER 05/27/23 Serial_No:06052319:30 Page 2 of 20 RANDOLPH LF 223052466 Project Name: Project Number: Lab Number: Report Date: L2329700 06/05/23 Case Narrative The samples were received in accordance with the Chain of Custody and no significant deviations were encountered during the preparation or analysis unless otherwise noted. Sample Receipt, Container Information, and the Chain of Custody are located at the back of the report. Results contained within this report relate only to the samples submitted under this Alpha Lab Number and meet NELAP requirements for all NELAP accredited parameters unless otherwise noted in the following narrative. The data presented in this report is organized by parameter (i.e. VOC, SVOC, etc.). Sample specific Quality Control data (i.e. Surrogate Spike Recovery) is reported at the end of the target analyte list for each individual sample, followed by the Laboratory Batch Quality Control at the end of each parameter. Tentatively Identified Compounds (TICs), if requested, are reported for compounds identified to be present and are not part of the method/program Target Compound List, even if only a subset of the TCL are being reported. If a sample was re-analyzed or re-extracted due to a required quality control corrective action and if both sets of data are reported, the Laboratory ID of the re-analysis or re-extraction is designated with an "R" or "RE", respectively. When multiple Batch Quality Control elements are reported (e.g. more than one LCS), the associated samples for each element are noted in the grey shaded header line of each data table. Any Laboratory Batch, Sample Specific % recovery or RPD value that is outside the listed Acceptance Criteria is bolded in the report. In reference to questions H (CAM) or 4 (RCP) when "NO" is checked, the performance criteria for CAM and RCP methods allow for some quality control failures to occur and still be within method compliance. In these instances, the specific failure is not narrated but noted in the associated QC Outlier Summary Report, located directly after the Case Narrative. QC information is also incorporated in the Data Usability Assessment table (Format 11) of our Data Merger tool, where it can be reviewed in conjunction with the sample result, associated regulatory criteria and any associated data usability implications. Soil/sediments, solids and tissues are reported on a dry weight basis unless otherwise noted. Definitions of all data qualifiers and acronyms used in this report are provided in the Glossary located at the back of the report. HOLD POLICY - For samples submitted on hold, Alpha's policy is to hold samples (with the exception of Air canisters) free of charge for 21 calendar days from the date the project is completed. After 21 calendar days, we will dispose of all samples submitted including those put on hold unless you have contacted your Alpha Project Manager and made arrangements for Alpha to continue to hold the samples. Air canisters will be disposed after 3 business days from the date the project is completed. Please contact Project Management at 800-624-9220 with any questions. Serial_No:06052319:30 Page 3 of 20 Case Narrative (continued) RANDOLPH LF 223052466 Project Name: Project Number: Lab Number: Report Date: L2329700 06/05/23 Report Submission All non-detect (ND) or estimated concentrations (J-qualified) have been quantitated to the limit noted in the MDL column. I, the undersigned, attest under the pains and penalties of perjury that, to the best of my knowledge and belief and based upon my personal inquiry of those responsible for providing the information contained in this analytical report, such information is accurate and complete. This certificate of analysis is not complete unless this page accompanies any and all pages of this report. Authorized Signature: Title: Technical Director/Representative Date: 06/05/23 Serial_No:06052319:30 Page 4 of 20 ORGANICS Serial_No:06052319:30 Page 5 of 20 VOLATILES Serial_No:06052319:30 Page 6 of 20 FF Methane Ethene Ethane Parameter Result Dilution Factor 17.8 ND ND ug/l ug/l ug/l 1 1 1 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052466 L2329700 2.00 0.500 0.500 06/05/23 MW-10DClient ID: 05/23/23 00:01Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329700-01Lab ID: Field Prep:Not Specified Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 06/02/23 12:57 SRO MDL 2.00 0.500 0.500 A A A Column Sample Depth: Serial_No:06052319:30 Page 7 of 20 Carbon Dioxide Parameter Result Dilution Factor 220 mg/l 2 Qualifier Units RL Dissolved Gases by GC - Mansfield Lab SAMPLE RESULTS Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052466 L2329700 6.00 06/05/23 MW-10DClient ID: 05/23/23 00:01Date Collected: 05/27/23Date Received: Not SpecifiedSample Location: L2329700-01Lab ID: Field Prep:Not Specified D Matrix:Water Analytical Method: Analytical Date: Analyst: 117,- 05/30/23 14:58 SRO MDL 6.00 Sample Depth: Serial_No:06052319:30 Page 8 of 20 Method Blank Analysis Batch Quality Control Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052466 L2329700 05/30/23 08:56 117,-Analytical Method: Analytical Date: 06/05/23 Analyst:SRO Carbon Dioxide Parameter Result ND RL 3.00mg/l UnitsQualifier Dissolved Gases by GC - Mansfield Lab for sample(s): 01 Batch: WG1784795-3 MDL 3.00 Serial_No:06052319:30 Page 9 of 20 Method Blank Analysis Batch Quality Control Project Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052466 L2329700 06/02/23 11:15 117,-Analytical Method: Analytical Date: 06/05/23 Analyst:SRO Methane Ethene Ethane Parameter Result ND ND ND RL 2.00 0.500 0.500 ug/l ug/l ug/l UnitsQualifier Dissolved Gases by GC - Mansfield Lab for sample(s): 01 Batch: WG1786321-3 MDL 2.00 0.500 0.500 A A A Serial_No:06052319:30 Page 10 of 20 Carbon Dioxide 95 -80-120 - Parameter LCS %Recovery LCSD %Recovery %Recovery Limits RPD RPD Limits Dissolved Gases by GC - Mansfield Lab Associated sample(s): 01 Batch: WG1784795-2 Lab Control Sample Analysis Batch Quality ControlProject Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052466 L2329700 06/05/23 Qual Qual Qual Serial_No:06052319:30 Page 11 of 20 Methane Ethene Ethane 93 88 87 - - - 80-120 80-120 80-120 - - - 25 25 25 Parameter LCS %Recovery LCSD %Recovery %Recovery Limits RPD RPD Limits Dissolved Gases by GC - Mansfield Lab Associated sample(s): 01 Batch: WG1786321-2 Lab Control Sample Analysis Batch Quality ControlProject Name: Project Number: Lab Number: Report Date: RANDOLPH LF 223052466 L2329700 06/05/23 Qual Qual Qual Column A A A Serial_No:06052319:30 Page 12 of 20 Methane Ethene Ethane 17.8 ND ND 15.3 ND ND ug/l ug/l ug/l 15 NC NC 25 25 25 Units RPDParameterNative Sample Duplicate Sample RPD Limits Dissolved Gases by GC - Mansfield Lab Associated sample(s): 01 QC Batch ID: WG1786321-4 QC Sample: L2329700-01 Client ID: MW-10D RANDOLPH LF 223052466 Project Name: Project Number: L2329700Lab Number: Report Date: Lab Duplicate Analysis Batch Quality Control 06/05/23 Qual A A A Serial_No:06052319:30 Page 13 of 20 *Values in parentheses indicate holding time in days L2329700-01A L2329700-01B L2329700-01C L2329700-01D L2329700-01E 20ml Vial HCl preserved 20ml Vial HCl preserved 20ml Vial HCl preserved Vial unpreserved 20ml Vial unpreserved 20ml A A A A A NA NA NA NA NA 1.9 1.9 1.9 1.9 1.9 Y Y Y Y Y Absent Absent Absent Absent Absent A Absent Cooler Custody Seal Cooler Information RANDOLPH LF 223052466 DISSGAS(14) DISSGAS(14) DISSGAS(14) DISSGAS-CO2(7) DISSGAS-CO2(7) Project Name: Project Number: L2329700Lab Number: Report Date: Sample Receipt and Container Information Container ID Container Type Cooler Temp deg C Pres Seal Container Information Analysis(*) 06/05/23 Were project specific reporting limits specified?YES Frozen Date/Time Final pH Initial pH Serial_No:06052319:30 Page 14 of 20 Report Format:DU Report with 'J' Qualifiers GLOSSARY Project Name: Project Number: Lab Number: Report Date: L2329700RANDOLPH LF 223052466 06/05/23 Acronyms DL EDL EMPC EPA LCS LCSD LFB LOD LOQ MDL MS MSD NA NC NDPA/DPA NI NP NR RL RPD SRM STLP TEF TEQ TIC Detection Limit: This value represents the level to which target analyte concentrations are reported as estimated values, when those target analyte concentrations are quantified below the limit of quantitation (LOQ). The DL includes any adjustments from dilutions, concentrations or moisture content, where applicable. (DoD report formats only.) Estimated Detection Limit: This value represents the level to which target analyte concentrations are reported as estimated values, when those target analyte concentrations are quantified below the reporting limit (RL). The EDL includes any adjustments from dilutions, concentrations or moisture content, where applicable. The use of EDLs is specific to the analysis of PAHs using Solid-Phase Microextraction (SPME). Estimated Maximum Possible Concentration: The concentration that results from the signal present at the retention time of an analyte when the ions meet all of the identification criteria except the ion abundance ratio criteria. An EMPC is a worst-case estimate of the concentration. Environmental Protection Agency. Laboratory Control Sample: A sample matrix, free from the analytes of interest, spiked with verified known amounts of analytes or a material containing known and verified amounts of analytes. Laboratory Control Sample Duplicate: Refer to LCS. Laboratory Fortified Blank: A sample matrix, free from the analytes of interest, spiked with verified known amounts of analytes or a material containing known and verified amounts of analytes. Limit of Detection: This value represents the level to which a target analyte can reliably be detected for a specific analyte in a specific matrix by a specific method. The LOD includes any adjustments from dilutions, concentrations or moisture content, where applicable. (DoD report formats only.) Limit of Quantitation: The value at which an instrument can accurately measure an analyte at a specific concentration. The LOQ includes any adjustments from dilutions, concentrations or moisture content, where applicable. (DoD report formats only.) Limit of Quantitation: The value at which an instrument can accurately measure an analyte at a specific concentration. The LOQ includes any adjustments from dilutions, concentrations or moisture content, where applicable. (DoD report formats only.) Method Detection Limit: This value represents the level to which target analyte concentrations are reported as estimated values, when those target analyte concentrations are quantified below the reporting limit (RL). The MDL includes any adjustments from dilutions, concentrations or moisture content, where applicable. Matrix Spike Sample: A sample prepared by adding a known mass of target analyte to a specified amount of matrix sample for which an independent estimate of target analyte concentration is available. For Method 332.0, the spike recovery is calculated using the native concentration, including estimated values. Matrix Spike Sample Duplicate: Refer to MS. Not Applicable. Not Calculated: Term is utilized when one or more of the results utilized in the calculation are non-detect at the parameter's reporting unit. N-Nitrosodiphenylamine/Diphenylamine. Not Ignitable. Non-Plastic: Term is utilized for the analysis of Atterberg Limits in soil. No Results: Term is utilized when 'No Target Compounds Requested' is reported for the analysis of Volatile or Semivolatile Organic TIC only requests. Reporting Limit: The value at which an instrument can accurately measure an analyte at a specific concentration. The RL includes any adjustments from dilutions, concentrations or moisture content, where applicable. Relative Percent Difference: The results from matrix and/or matrix spike duplicates are primarily designed to assess the precision of analytical results in a given matrix and are expressed as relative percent difference (RPD). Values which are less than five times the reporting limit for any individual parameter are evaluated by utilizing the absolute difference between the values; although the RPD value will be provided in the report. Standard Reference Material: A reference sample of a known or certified value that is of the same or similar matrix as the associated field samples. Semi-dynamic Tank Leaching Procedure per EPA Method 1315. Toxic Equivalency Factors: The values assigned to each dioxin and furan to evaluate their toxicity relative to 2,3,7,8-TCDD. Toxic Equivalent: The measure of a sample's toxicity derived by multiplying each dioxin and furan by its corresponding TEF and then summing the resulting values. Tentatively Identified Compound: A compound that has been identified to be present and is not part of the target compound list (TCL) for the method and/or program. All TICs are qualitatively identified and reported as estimated concentrations. - - - - - - - - - - - - - - - - - - - - - - - - Serial_No:06052319:30 Page 15 of 20 Report Format:DU Report with 'J' Qualifiers Project Name: Project Number: Lab Number: Report Date: L2329700RANDOLPH LF 223052466 06/05/23 Terms Analytical Method: Both the document from which the method originates and the analytical reference method. (Example: EPA 8260B is shown as 1,8260B.) The codes for the reference method documents are provided in the References section of the Addendum. Chlordane: The target compound Chlordane (CAS No. 57-74-9) is reported for GC ECD analyses. Per EPA,this compound "refers to a mixture of chlordane isomers, other chlorinated hydrocarbons and numerous other components." (Reference: USEPA Toxicological Review of Chlordane, In Support of Summary Information on the Integrated Risk Information System (IRIS), December 1997.) Difference: With respect to Total Oxidizable Precursor (TOP) Assay analysis, the difference is defined as the Post-Treatment value minus the Pre-Treatment value. Final pH: As it pertains to Sample Receipt & Container Information section of the report, Final pH reflects pH of container determined after adjustment at the laboratory, if applicable. If no adjustment required, value reflects Initial pH. Frozen Date/Time: With respect to Volatile Organics in soil, Frozen Date/Time reflects the date/time at which associated Reagent Water- preserved vials were initially frozen. Note: If frozen date/time is beyond 48 hours from sample collection, value will be reflected in 'bold'. Gasoline Range Organics (GRO): Gasoline Range Organics (GRO) results include all chromatographic peaks eluting from Methyl tert butyl ether through Naphthalene, with the exception of GRO analysis in support of State of Ohio programs, which includes all chromatographic peaks eluting from Hexane through Dodecane. Initial pH: As it pertains to Sample Receipt & Container Information section of the report, Initial pH reflects pH of container determined upon receipt, if applicable. PAH Total: With respect to Alkylated PAH analyses, the 'PAHs, Total' result is defined as the summation of results for all or a subset of the following compounds: Naphthalene, C1-C4 Naphthalenes, 2-Methylnaphthalene, 1-Methylnaphthalene, Biphenyl, Acenaphthylene, Acenaphthene, Fluorene, C1-C3 Fluorenes, Phenanthrene, C1-C4 Phenanthrenes/Anthracenes, Anthracene, Fluoranthene, Pyrene, C1-C4 Fluoranthenes/Pyrenes, Benz(a)anthracene, Chrysene, C1-C4 Chrysenes, Benzo(b)fluoranthene, Benzo(j)+(k)fluoranthene, Benzo(e)pyrene, Benzo(a)pyrene, Perylene, Indeno(1,2,3-cd)pyrene, Dibenz(ah)+(ac)anthracene, Benzo(g,h,i)perylene. If a 'Total' result is requested, the results of its individual components will also be reported. PFAS Total: With respect to PFAS analyses, the 'PFAS, Total (5)' result is defined as the summation of results for: PFHpA, PFHxS, PFOA, PFNA and PFOS. In addition, the 'PFAS, Total (6)' result is defined as the summation of results for: PFHpA, PFHxS, PFOA, PFNA, PFDA and PFOS. For MassDEP DW compliance analysis only, the 'PFAS, Total (6)' result is defined as the summation of results at or above the RL. Note: If a 'Total' result is requested, the results of its individual components will also be reported. Total: With respect to Organic analyses, a 'Total' result is defined as the summation of results for individual isomers or Aroclors. If a 'Total' result is requested, the results of its individual components will also be reported. This is applicable to 'Total' results for methods 8260, 8081 and 8082. Data Qualifiers A B C D E F G H I J - - - - - - - - - - Spectra identified as "Aldol Condensates" are byproducts of the extraction/concentration procedures when acetone is introduced in the process. The analyte was detected above the reporting limit in the associated method blank. Flag only applies to associated field samples that have detectable concentrations of the analyte at less than ten times (10x) the concentration found in the blank. For MCP-related projects, flag only applies to associated field samples that have detectable concentrations of the analyte at less than ten times (10x) the concentration found in the blank. For DOD-related projects, flag only applies to associated field samples that have detectable concentrations of the analyte at less than ten times (10x) the concentration found in the blank AND the analyte was detected above one-half the reporting limit (or above the reporting limit for common lab contaminants) in the associated method blank. For NJ- Air-related projects, flag only applies to associated field samples that have detectable concentrations of the analyte above the reporting limit. For NJ-related projects (excluding Air), flag only applies to associated field samples that have detectable concentrations of the analyte, which was detected above the reporting limit in the associated method blank or above five times the reporting limit for common lab contaminants (Phthalates, Acetone, Methylene Chloride, 2-Butanone). Co-elution: The target analyte co-elutes with a known lab standard (i.e. surrogate, internal standards, etc.) for co-extracted analyses. Concentration of analyte was quantified from diluted analysis. Flag only applies to field samples that have detectable concentrations of the analyte. Concentration of analyte exceeds the range of the calibration curve and/or linear range of the instrument. The ratio of quantifier ion response to qualifier ion response falls outside of the laboratory criteria. Results are considered to be an estimated maximum concentration. The concentration may be biased high due to matrix interferences (i.e, co-elution) with non-target compound(s). The result should be considered estimated. The analysis of pH was performed beyond the regulatory-required holding time of 15 minutes from the time of sample collection. The lower value for the two columns has been reported due to obvious interference. Estimated value. The Target analyte concentration is below the quantitation limit (RL), but above the Method Detection Limit (MDL) or Estimated Detection Limit (EDL) for SPME-related analyses. This represents an estimated concentration for Tentatively 1 The reference for this analyte should be considered modified since this analyte is absent from the target analyte list of the original method. Footnotes Serial_No:06052319:30 Page 16 of 20 Report Format:DU Report with 'J' Qualifiers Project Name: Project Number: Lab Number: Report Date: L2329700RANDOLPH LF 223052466 06/05/23 Data Qualifiers M ND NJ P Q R RE S V Z - - - - - - - - - - Identified Compounds (TICs). Reporting Limit (RL) exceeds the MCP CAM Reporting Limit for this analyte. Not detected at the method detection limit (MDL) for the sample, or estimated detection limit (EDL) for SPME-related analyses. Presumptive evidence of compound. This represents an estimated concentration for Tentatively Identified Compounds (TICs), where the identification is based on a mass spectral library search. The RPD between the results for the two columns exceeds the method-specified criteria. The quality control sample exceeds the associated acceptance criteria. For DOD-related projects, LCS and/or Continuing Calibration Standard exceedences are also qualified on all associated sample results. Note: This flag is not applicable for matrix spike recoveries when the sample concentration is greater than 4x the spike added or for batch duplicate RPD when the sample concentrations are less than 5x the RL. (Metals only.) Analytical results are from sample re-analysis. Analytical results are from sample re-extraction. Analytical results are from modified screening analysis. The surrogate associated with this target analyte has a recovery outside the QC acceptance limits. (Applicable to MassDEP DW Compliance samples only.) The batch matrix spike and/or duplicate associated with this target analyte has a recovery/RPD outside the QC acceptance limits. (Applicable to MassDEP DW Compliance samples only.) Serial_No:06052319:30 Page 17 of 20 Alpha Analytical performs services with reasonable care and diligence normal to the analytical testing laboratory industry. In the event of an error, the sole and exclusive responsibility of Alpha Analytical shall be to re-perform the work at it's own expense. In no event shall Alpha Analytical be held liable for any incidental, consequential or special damages, including but not limited to, damages in any way connected with the use of, interpretation of, information or analysis provided by Alpha Analytical. We strongly urge our clients to comply with EPA protocol regarding sample volume, preservation, cooling, containers, sampling procedures, holding time and splitting of samples in the field. LIMITATION OF LIABILITIES 117 Technical Guidance for the Natural Attenuation Indicators: Methane, Ethane, and Ethene, EPA-NE, Revision 1, February 21, 2002 and Sample Preparation & Calculations for Dissolved Gas Analysis in Water Samples using a GC Headspace Equilibration Technique, EPA RSKSOP-175, Revision 2, May 2004. Project Name: Project Number: Lab Number: Report Date: L2329700RANDOLPH LF 223052466 REFERENCES 06/05/23 Serial_No:06052319:30 Page 18 of 20 Alpha Analytical, Inc.ID No.:17873 Company-wide Revision 19 Quality Assurance Published Date: 4/2/2021 1:14:23 PM Certificate/Approval Program Summary Page 1 of 1 Document Type: Form Pre-Qualtrax Document ID: 08-113 Certification Information The following analytes are not included in our Primary NELAP Scope of Accreditation: Westborough Facility EPA 624/624.1: m/p-xylene, o-xylene, Naphthalene EPA 625/625.1: alpha-Terpineol EPA 8260C/8260D: NPW: 1,2,4,5-Tetramethylbenzene; 4-Ethyltoluene, Azobenzene; SCM: Iodomethane (methyl iodide), 1,2,4,5-Tetramethylbenzene; 4-Ethyltoluene. EPA 8270D/8270E: NPW: Dimethylnaphthalene,1,4-Diphenylhydrazine, alpha-Terpineol; SCM: Dimethylnaphthalene,1,4-Diphenylhydrazine. SM4500: NPW: Amenable Cyanide; SCM: Total Phosphorus, TKN, NO2, NO3. Mansfield Facility SM 2540D: TSS EPA 8082A: NPW: PCB: 1, 5, 31, 87,101, 110, 141, 151, 153, 180, 183, 187. EPA TO-15: Halothane, 2,4,4-Trimethyl-2-pentene, 2,4,4-Trimethyl-1-pentene, Thiophene, 2-Methylthiophene, 3-Methylthiophene, 2-Ethylthiophene, 1,2,3-Trimethylbenzene, Indan, Indene, 1,2,4,5-Tetramethylbenzene, Benzothiophene, 1-Methylnaphthalene. Biological Tissue Matrix: EPA 3050B The following analytes are included in our Massachusetts DEP Scope of Accreditation Westborough Facility: Drinking Water EPA 300.0: Chloride, Nitrate-N, Fluoride, Sulfate; EPA 353.2: Nitrate-N, Nitrite-N; SM4500NO3-F: Nitrate-N, Nitrite-N; SM4500F-C, SM4500CN-CE, EPA 180.1, SM2130B, SM4500Cl-D, SM2320B, SM2540C, SM4500H-B, SM4500NO2-B EPA 332: Perchlorate; EPA 524.2: THMs and VOCs; EPA 504.1: EDB, DBCP. Microbiology: SM9215B; SM9223-P/A, SM9223B-Colilert-QT,SM9222D. Non-Potable Water SM4500H,B, EPA 120.1, SM2510B, SM2540C, SM2320B, SM4500CL-E, SM4500F-BC, SM4500NH3-BH: Ammonia-N and Kjeldahl-N, EPA 350.1: Ammonia-N, LACHAT 10-107-06-1-B: Ammonia-N, EPA 351.1, SM4500NO3-F, EPA 353.2: Nitrate-N, SM4500P-E, SM4500P-B, E, SM4500SO4-E, SM5220D, EPA 410.4, SM5210B, SM5310C, SM4500CL-D, EPA 1664, EPA 420.1, SM4500-CN-CE, SM2540D, EPA 300: Chloride, Sulfate, Nitrate. EPA 624.1: Volatile Halocarbons & Aromatics, EPA 608.3: Chlordane, Toxaphene, Aldrin, alpha-BHC, beta-BHC, gamma-BHC, delta-BHC, Dieldrin, DDD, DDE, DDT, Endosulfan I, Endosulfan II, Endosulfan sulfate, Endrin, Endrin Aldehyde, Heptachlor, Heptachlor Epoxide, PCBs EPA 625.1: SVOC (Acid/Base/Neutral Extractables), EPA 600/4-81-045: PCB-Oil. Microbiology: SM9223B-Colilert-QT; Enterolert-QT, SM9221E, EPA 1600, EPA 1603, SM9222D. Mansfield Facility: Drinking Water EPA 200.7: Al, Ba, Cd, Cr, Cu, Fe, Mn, Ni, Na, Ag, Ca, Zn. EPA 200.8: Al, Sb, As, Ba, Be, Cd, Cr, Cu, Pb, Mn, Ni, Se, Ag, TL, Zn. EPA 245.1 Hg. EPA 522, EPA 537.1. Non-Potable Water EPA 200.7: Al, Sb, As, Be, Cd, Ca, Cr, Co, Cu, Fe, Pb, Mg, Mn, Mo, Ni, K, Se, Ag, Na, Sr, TL, Ti, V, Zn. EPA 200.8: Al, Sb, As, Be, Cd, Cr, Cu, Fe, Pb, Mn, Ni, K, Se, Ag, Na, TL, Zn. EPA 245.1 Hg. SM2340B For a complete listing of analytes and methods, please contact your Alpha Project Manager. Serial_No:06052319:30 Page 19 of 20 Serial_No:06052319:30 Page 20 of 20 WSP USA INC QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA RTMIEW Page 1 of 4 Project Name: Randolph County Landfill- MNA Project Reference Number: 31404568.018 Sampling Event Date: May 22 – 24, 2023 Review Date: August 8, 2023 Initials: JS Report #: 752-7507-1, 223052466, 223052434 Review: MS Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. WSP USA Inc. has reviewed the laboratory certificates of analysis, chain-of-custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents:  Region III Modifications to Functional Guidelines for Organic Data Review Multi-Media, Multi- Concentration, September 1994;  Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and  Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility List (.500 Rules) NC C & D List (New Rules) NC Appendix I NC Appendix I + Detects NC Appendix II NC Subtitle D Leachate List Other: MNA Parameters 1.0 CHAIN OF CUSTODY (COC) REVIEW JS COC was properly signed by all parties. JS Correct project name and number are on the form. JS Sample receipt condition at laboratory was acceptable. JS Each sample and blank submitted for analysis appears in the report. WSP USA INC QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA RTMIEW Page 2 of 4 2.0 SAMPLE HOLDING TIMES JS Holding times for extraction and/or analysis were met for each analytical method (see below for reference). Review Criteria Method Analytes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW JS Laboratory analyzed at least one internal blank for each method, where applicable. JS Laboratory blank is interference-free. JS Surrogate recoveries are provided for each analytical method, where applicable. JS Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). JS MS/MSD/LCS data results are provided for each analytical method. JS MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range).  Total Organic Carbon in MW-10D recovered outside the acceptable limits in the MSD analysis (223052366). 4.0 ANALYTE LISTS/METHODS JS The proper number of constituents are present for each analyte list as identified above (including detects where applicable). JS Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING JS All analytical reporting associated with the event was performed by the contracted lab. JS Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been ‘flagged’ with a ‘B’ where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 10X for commonly detected laboratory contaminants-acetone, methylene chloride and phthalates), list WSP USA INC QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA RTMIEW Page 3 of 4 below with explanation if flags should be removed. If flags need to be added for samples, also list below. JS It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor.  Chloride  MW-10D (20X); MW-2 (2X), MW-10S (5X)  Carbon Dioxide  All sampling points (2X);  Volatile Fatty Acids  MW-10S, MW-10D (10X);  Nitrate  MW-10D (2X);  Sulfate  MW-10D (2X); JS The report provides the reporting limit for each constituent. JS The results were reported at or below their proper reporting limits. Those that are not reported correctly are listed below (by constituent) with the proper reporting limit listed beside them. State if the reporting limit error is due to dilutions. JS No organic constituents were reported above their respective reporting limits, and no inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards/NC 2L IMAC in wells, field/equipment/trip blanks, or above applicable surface water standards in surface water points. Those that were detected above applicable groundwater/surface water standards are listed below.  1,1-Dichloroethane (2L = 6 ug/L)  MW-10S @ 38.3 ug/L  Vinyl Chloride (2L = 0.03 ug/L)  MW-10S @ 0.665 ug/L JS No inorganic and organic constituents were detected in a well or surface water point at quantified concentrations outside of their historical range (more than 5X previous concentrations or first-time detections).  Ferrous Iron (1st time detection)  MW-8 @ 0.021 ug/L (J)  Sulfide (1st time detections)  MW-2 @ 4.4 mg/L  MW-3 @ 5.0 mg/L  MW-7 @ 3.2 mg/L  MW-8 @ 3.2 mg/L  MW-10S @ 4.0 mg/L  MW-10D @ 4.0 mg/L  MW-11S @ 2.2 mg/L WSP USA INC QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA RTMIEW Page 4 of 4  Lactic Acid (1st time detections)  MW-3 @ 0.46 mg/L (J)  MW-8 @ 0.72 mg/L  MW-10D @ 0.073 mg/L (J)  MW-11S @ 0.25 mg/L (J)  Acetic Acid (1st time detection)  MW-3 @ 1.1 mg/L  Acetic Acid (>5X previous concentrations)  MW-2 @ 1.1 mg/L  MW-7 @ 1.0 mg/L  MW-8 @ 1.1 mg/L  MW-10S @ 8.5 mg/L  MW-10D @ 8.4 mg/L  MW-11S @ 1.2 mg/L  Propionic Acid (1st time detections)  MW-8 @ 0.19 mg/L (J)  MW-10D @ 0.17 mg/L (J) JS Other report issues/Communications with laboratory/etc.: WSP USA INC. QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA RTMIEW Page 1 of 3 Project Name: Randolph County Landfill Project Reference Number: 31404568.018 Sampling Event Date: May 22 - 24, 2023 Review Date: August 9, 2023 Initials: JS Report #: 223052466 & 223052434 Review: MS Person(s) performing the review are to initial each item on this form as acknowledgement of data acceptance, or as acknowledgement of a review issue. In the case of the latter, a brief explanation should follow the applicable item. WSP USA Inc. has reviewed the laboratory certificates of analysis, chain-of-custody form, and laboratory provided sample group quality assurance and quality control data for the above referenced sample group to identify potential bias or inaccuracy, in general accordance with the following United States Environmental Protection Agency documents:  Region III Modifications to Functional Guidelines for Organic Data Review Multi-Media, Multi- Concentration, September 1994;  Region III Modifications to the Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, April 1993; and  Laboratory Data Validation Functional Guidelines for Evaluating Inorganic Analyses, July 1998. COMPLIANCE ANALYTE LIST(S) (check all that apply) NC Closed Facility List (.500 Rules) NC C & D List (New Rules) NC Appendix I NC Appendix I + Detects NC Appendix II NC Subtitle D Leachate List Other: Hydrogen, CO2, Ferrous Iron, Methane, Ethane, Ethene 1.0 CHAIN OF CUSTODY (COC) REVIEW JS COC was properly signed by all parties. JS Correct project name and number are on the form. JS Sample receipt condition at laboratory was acceptable. JS Each sample and blank submitted for analysis appears in the report. 2.0 SAMPLE HOLDING TIMES JS Holding times for extraction and/or analysis were met for each analytical method (see below for reference). Review Criteria Method Analytes Holding Time SW-846 Method 8260 and 8011 VOCs 14 days SW-846 Methods 8270, 8080, 8081, 8082, and 8151 SVOCs, PCBs, pesticides and herbicides 7 days for extraction, 40 days from extraction for analysis SW-846 Methods 6000 and 7000 Series Metals except mercury 6 months (no temperature requirements) SW-846 Method 7470 Mercury 28 days SW-846 Method 376.1 Sulfide 7 days WSP USA INC QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA RTMIEW Page 2 of 3 SW-846 Method 9010 Cyanide 14 days EPA Method 300 Nitrate/Sulfate 48 hours/28 days EPA Method 405.1 BOD 48 hours EPA Method 410.4 COD 28 days EPA Method 365.4 Phosphorous 28 days 3.0 LABORATORY QUALITY CONTROL REVIEW JS Laboratory analyzed at least one internal blank for each method, where applicable. JS Laboratory blank is interference-free. JS Surrogate recoveries are provided for each analytical method, where applicable. JS Surrogate recoveries for each method are within the acceptable limits (i.e., at least 50% of the surrogates were within range). JS MS/MSD/LCS data results are provided for each analytical method. JS MS/MSD/LCS recoveries for each method are within the acceptable limits (i.e., at least 1 of the 3 were within range).  Total Organic Carbon in MW-10D recovered outside the acceptable limits in the MSD analysis (223052366). 4.0 ANALYTE LISTS/METHODS JS The proper number of constituents are present for each analyte list as identified above (including detects where applicable). JS Proper EPA SW-846 analytical methods were used for analysis. 5.0 DATA REPORTING JS All analytical reporting associated with the event was performed by the contracted lab. JS Trip, field and/or equipment, and laboratory blank results have all been reported. All detects for blanks are listed below by constituent. All laboratory method blanks, if any, have been ‘flagged’ with a ‘B’ where detected in other samples as appropriate and a laboratory narrative was provided. If the sample was flagged by the laboratory and is not within 5X of the concentration in the blank (or 10X for commonly detected laboratory contaminants-acetone, methylene chloride and phthalates), list below with explanation if flags should be removed. If flags need to be added for samples, also list below. JS It is clear from the laboratory report that samples have or have not been diluted during analysis, and if the samples have been diluted, the result is reported as a multiple of the dilution (e.g., a sample diluted 10x resulting in an analytical detection of 1.0 should be reported as 10). Those that have been diluted are listed below with the dilution factor.  Carbon Dioxide  All sampling points (2X); JS The report provides the reporting limit for each constituent. JS The results were reported at or below their proper reporting limits (i.e., MDLs with SWSLs reported). Those that are not reported correctly are listed below (by constituent) with the proper reporting limit WSP USA INC QUALITY ASSURANCE & QUALITY CONTROL LABORATORY DATA RTMIEW Page 3 of 3 listed beside them. State if the reporting limit error is due to dilutions. JS No organic constituents were reported above their respective SWSLs, and no inorganic or organic constituents were reported above their respective NC 2L Drinking Water Standards/GWPS in wells, or field/equipment/trip blanks, or above applicable surface water standards in surface water points. JS No inorganic and organic constituents were detected in a well or surface water point at quantified concentrations outside of their historical range (more than 5X previous concentrations or first-time detections). JS Other report issues/Communications with laboratory/etc.: APPENDIX C EPA Natural Attenuation Screening Protocol Forms and BIOCHLOR Monitored Natural Attenuation Analysis Reviewed By: NTT Prepared By: NTT Project #: 31404568.018 DATE: 9/6/2023 Appendix C-2 Title: MW-2 MNA SCREENING May 2023 Baseline MNA Evaluation Randolph County Landfill, Permit No. 76-01 Reviewed By: NTT Prepared By: NTT Project #: 31404568.018 DATE: 9/6/2023 Appendi x C-3 Title: MW-3 MNA SCREENING May 2023 Baseline MNA Evaluation Randolph County Landfill, Permit No. 76-01 Reviewed By: NTT Prepared By: NTT Project #: 31404568.018 DATE: 9/6/2023 Appendix C-4 Title: MW-7 MNA SCREENING May 2023 Baseline MNA Evaluation Randolph County Landfill, Permit No. 76-01 Reviewed By: NTT Prepared By: NTT Project #: 31404568.018 DATE: 9/6/2023 Appendix C-5 Title: MW-8 MNA SCREENING May 2023 Baseline MNA Evaluation Randolph County Landfill, Permit No. 76-01 Reviewed By: NTT Prepared By: NTT Project #: 31404568.018 DATE: 9/6/2023 Appendix C-6 Title: MW-10S MNA SCREENING May 2023 Baseline MNA Evaluation Randolph County Landfill, Permit No. 76-01 Reviewed By: NTT Prepared By: NTT Project #: 31404568.018 DATE: 9/6/2023 Appendix C-7 Title: MW-10D MNA SCREENING May 2023 Baseline MNA Evaluation Randolph County Landfill, Permit No. 76-01 Reviewed By: NTT Prepared By: NTT Project #: 31404568.018 DATE: 9/6/2023 Appendi x C-8 Title: MW-11S MNA SCREENING May 2023 Baseline MNA Evaluation Randolph County Landfill, Permit No. 76-01 Appendix C-9 Title: BIOCHLOR DATA ENTRY SHEETS FOR WELLS MW-8 AND MW-3 May 2023 Baseline MNA Evaluation Randolph County Landfill, Permit No. 76- 01 Date: 9/6/2023 Project#:31404568.018 Prepared By: NTT Review By: NTT Reviewed By: NTT Prepared By: NTT Project# 31404568.018 Date: 9/9/2023 Appendix C-10 Title: BIOCHLOR MODEL FOR WELLS MW-8 AND MW-3 May 2023 Baseline MNA Evaluation Randolph County Landfill, Permit No. 76-01 Prepared By: NTT Project# 31404568.018 DATE: 9/6/2023 Appendix C-11 Title: BIOCHLOR DATA ENTRY SHEETS FOR WELLS MW-10S, MW-10D, AND SW-2 May 2023 Baseline MNA Evaluation Randolph County Landfill, Permit No. 76-01 Review By: NTT Reviewed By: NTT Prepared By: NTT Project# 31404568.018 Date: 9/9/2023 Appendix C-12 Title: BIOCHLOR MODEL FOR WELLS MW-10S, MW-10D, AND SW-2 May 2023 Baseline MNA Evaluation Randolph County Landfill, Permit No. 76-01