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Home My WebLink About3606_HardinUnlinedMSWLF_December2022GWMR_FID1830640_20240222 SECOND SEMI-ANNUAL 2022 APPENDIX I/II GROUNDWATER & SURFACE WATER MONITORING GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA Prepared for: Mr. Dan Ziehm, PE Gaston County Public Works P.O. Box 1578 Gastonia, North Carolina 28053 December 23, 2023 Prepared by: _____________________________ Ross Klingman, P.G. Senior Geologist SECOND SEMI-ANNUAL 2022 APPENDIX I/II GROUNDWATER & SURFACE WATER MONITORING GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA TABLE OF CONTENTS 1.0 Introduction 1 2.0 Background Information 4 3.0 Groundwater and Surface Water Monitoring Activities 19 4.0 Site Hydrogeology 20 4.1 Shallow Groundwater Flow Direction and Rate 20 5.0 Second Semi-Annual 2022 Analytical Results 5.1 Groundwater, Surface Water and Quality Control Analytical Results – Closed Unlined MSW Landfill 21 5.2 Groundwater and Leachate Analytical Results – Unit I Phase 1 & 2 Lined MSW Landfill 22 6.0 Statistical Evaluation of Historical Groundwater Data 24 6.1 Statistical Groundwater Evaluation Methods 24 6.2 Statistical Groundwater Evaluation Results 24 7.0 Conclusions 26 8.0 Recommendations 29 9.0 References 30 LIST OF FIGURES 1. Site Location Map 2. Site Layout Map 3. Shallow Groundwater Flow Direction Map 4. Groundwater Analytical Results SECOND SEMI-ANNUAL 2022 APPENDIX I/II GROUNDWATER & SURFACE WATER MONITORING GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA TABLE OF CONTENTS (continued) LIST OF TABLES 1. Groundwater Gauging Data 2. Field Parameter Data 3. Hydrogeologic Data 4. Appendix I Groundwater Analytical Results 5. Appendix I Surface Water Analytical Results 6a. Historical Groundwater Analytical Results, MW-1 6b. Historical Groundwater Analytical Results, MW-2 6c. Historical Groundwater Analytical Results, MW-6 6d. Historical Groundwater Analytical Results, MW-7 6e. Historical Groundwater Analytical Results, MW-8 6f. Historical Groundwater Analytical Results, MW-9 6g. Historical Groundwater Analytical Results, MW-10 and MW-10A 6h. Historical Groundwater Analytical Results, MW-11 6i. Historical Groundwater Analytical Results, MW-19 6j. Historical Groundwater Analytical Results, MW-21 6k. Historical Groundwater Analytical Results, MW-35 7. Statistical Evaluation of Historical Groundwater Data APPENDICES A. NCSWS Memorandums – PFAS Monitoring – March 13, 2023 and July 17, 2023 B. Historical Groundwater Analytical Results – MW-B, MW-BD, MW-15 & MW-16 C. Leachate Analytical Results - Unit I Phase 1 & 2 Lined MSW Landfill - August & December 2022 D. Laboratory Data Sheets Page | 1 SECOND SEMI-ANNUAL 2022 APPENDIX I/II GROUNDWATER & SURFACE WATER MONITORING GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA 1.0 INTRODUCTION Buxton Environmental, Inc. respectfully submits the methods and results of the second semi-annual 2022 Appendix I/II groundwater and surface water Detection Monitoring and Assessment Monitoring activities conducted at the Gaston County closed unlined municipal solid waste (MSW) landfill - Hardin site (Permit No.: 3606) located at 3155 Philadelphia Church Road in Dallas, North Carolina. An inactive construction and demolition (C&D) landfill, which stopped receiving waste in April 2023, is located on-top of the closed unlined MSW landfill. Full Appendix II sampling conducted at downgradient Unit I Phase 1 & Phase 2 compliance wells MW-15 and MW-16 was also evaluated, in order to continue Assessment Monitoring requirements and determine the source/sources of both Appendix I and II constituents exceedances historically detected in the area between the east side of the Unit I Phase 1 MSW landfill and the drainage swale. In addition, pesticide contaminants-of-concern (CoCs) aldrin and beta BHC were also analyzed at Unit I Phase I & 2 lined MSW landfill leachate samples LEACHATE-UNIT I (E) and LEACHATE-UNIT I (W) for the second consecutive event as part of the above mentioned Assessment Monitoring investigation. The purpose for conducting the assessment was to monitor groundwater and surface water quality, and determine hydrogeologic conditions at the closed unlined landfill. A site location map and site layout map are provided in Figures 1 and 2, respectively. The monitoring activities were conducted in general accordance with current North Carolina Department of Environmental Quality, Division of Waste Management-Solid Waste Section (NCSWS) NCSWS Detection Monitoring Program Rules for MSW landfills (15A NCAC 13B .1632 and .1633), Assessment Monitoring Program Rules (15A NCAC 13B .1634), and Corrective Action Program Rules (15A NCAC 13B .1637); the NCSWS groundwater and surface water sampling guidelines dated April 2008; the NCSWS letter dated September 9, 2016 concerning 14-day notification following a groundwater constituent exceedance of NCGPSs for the first-time; a March 23, 2017 memorandum from the NCSWS concerning routine up-keep and maintenance issues at monitoring wells; and a May 29, 2018 memorandum from the NCSWS requiring the analysis of 1,4-dioxane by EPA Method 8260 volatile organic compounds (VOCs) or EPA Method 8270 (semi- VOCs) utilizing the select ion monitoring (SIM) procedure after July 1, 2018, the discontinuation of Solid Waste Section Limits (SWSLs, minimum laboratory detection limits) and opting for EPA approved analytical methods sufficiently sensitive to quantify the presence of constituents at or below applicable standards; and conversations with Mr. Ervin Lane (project manager) with the NCSWS. On March 2, 2020, Mr. Ervin Lane with the NCSWS indicated that a new policy would allow permitted landfills to discontinue/reduce the required analysis of 1,4-dioxane (by EPA SIM) during routine monitoring at compliance groundwater monitor wells and surface water sample locations, if they have been below the method detection limit (MDL) for two (2) consecutive events. According to NCSWS rules dated April 1, 2011, the statistical evaluation of historical groundwater data at municipal solid waste landfills is now optional and statistically significant increases in target constituents no longer warrant assessment. The NCGPSs are generally defined by the NCSWS as the most protective of the Federal Maximum Contaminant Level for Drinking Water (MCL), the North Carolina 2L Groundwater Quality Standards (2L NCGQSs), or NCGPSs established by the NCSWS (generally obtained from interim established 2L NCGQSs). The NCGPS and 2L NCGQS for non-naturally occurring constituents with no established standard is the practical quantitation limit (PQL). For naturally occurring constituents (i.e. metals), the NCGPS and the 2L NCGQS are the naturally occurring background concentrations. For clarity purposes, the NCGPSs and 2L Page | 2 NCGQSs are essentially synonymous with each other. According to the NCGPSs and 2L NCGQSs, non- quantified J-flagged laboratory data (estimated qualified data) which are detected less than the quantifiable PQL, limit of quantitation (LOQ) or reporting limit (RL) (all synonyms), and above the MDL (lowest non- quantified limits of the laboratory instrumentation) are not considered exceedances of NCGPSs or 2L NCGQSs. The NCGPSs in this report have been updated to reflect current standards issued by the NCSWS on April 11, 2022. The construction of the drainage swale by-pass around the east and south sides of the Unit II Phase 1 & 2 lined MSW landfill was completed in November 2021, in order to divert stormwater run-off gathered at the scale house and maintenance building area from discharging into the drainage swale and to prepare for the future construction of the Unit III lined MSW landfill (Figure 2). The Unit III landfill will be constructed over the drainage swale and will occupy the space between the existing Unit I Phase 1 & 2 lined MSW landfill to the west and the Unit II Phase 1 & 2 lined MSW landfill to the east. The construction of the drainage swale storm water by-pass in conjunction with the Unit III lined MSW landfill over the drainage swale are expected to greatly improve surface water and groundwater quality at the site by limiting surface water discharge and improving groundwater hydrogeologic conditions that would limit CoC plume migration (including reduced groundwater recharge and hydraulic gradients, slowing the rate of plume transport) along this former drainage area conduit. On October 26, 2022, Mr. Ervin Lane with the NCSWS approved our request to abandon seven monitor wells located within the footprint of the Unit III lined MSW landfill expansion area including Unit I Phase 1 & 2 MSW landfill wells MW-32, MW-33, MW-34 and MW-35 (also closed unlined MSW landfill dual purpose well) located on the west side of the drainage swale; and Unit II Phase 1 & 2 landfill wells MW-28, MW-29 and MW-30 located on the east side of the drainage swale. These activities were necessary in order to commence with timber clearing and construction of the Unit III French drain located along the upper portion of the on-site drainage swale. On March 13, 2023, the NCSWS issued a memorandum requiring per- and polyfluoroalkyl substances (PFAS) analyses during groundwater, surface water and leachate monitoring conducted after July 1, 2023 at all landfills regulated under 15A NCAC 13B Rules: 0601 and .0602 (all other landfills not regulated under .0531-0546 and .1600 rules); .0544 and .0545 (C&D landfills); and .1623, and .1630 - .1637 (Subtitle D lined MSW landfills). According to the memo, PFAS include a group of manufactured compounds used in aerospace, automotive, textiles, electronics, food packaging, stain-repellent products, non-stick products and firefighting foams that do not breakdown in the environment and bioaccumulate in humans and animals through soil and drinking water and are linked to adverse health effects. On July 20, 2023, Mr. Perry Sugg (NCSWS - Environmental Compliance Branch Head), clarified that PFAS monitoring was also required at old closed MSW landfills that fall under old NCSWS Rule .0500 that defaults to North Carolina 2L groundwater monitoring rules. Water samples should be analyzed by EPA (Draft) Method 1633 (PFAS) by a Department of Defense (DOD) accredited laboratory. The March 13, 2023 memorandum from the NCSWS regarding PFAS monitoring requirements is provided in Appendix A. On July 17, 2023, the NCSWS issued a memorandum clarifying PFAS monitoring requirements at solid waste sanitary landfills. The letter addresses landfill types that should comply; monitoring frequency (minimum of two (2) consecutive sample events, after which the data will be evaluated for future continued monitoring requirements); sampling methodology (including sampling practices and precautions to avoid equipment cross- contamination); analytical method and laboratories (EPA (Draft) Method 1633 for up to 40 PFAS compounds by a DOD accredited laboratory); monitoring locations (groundwater wells, surface water locations, underdrains (French drains) and leachate); and reporting (routine report preparation and submittal, along with electronic deliverable data (EDD) requirements in the EQUIS format). The July 17, 2023 memorandum from the NCSWS clarifying PFAS monitoring requirements is provided in Appendix A. Page | 3 A summary of background information, and the methods, results, conclusions and recommendations of this investigation are outlined below. Page | 4 2.0 BACKGROUND INFORMATION The Gaston County Landfill - Hardin Site consists of approximately 426 acres and is located on the north central side of Gaston County, approximately 1.5 miles south of the Lincoln County line (Figure 1). The landfill site has been in operation since approximately 1985. The subject facility presently contains four landfill areas, which include a closed construction and demolition (C&D) landfill; a closed unlined MSW landfill with inactive C&D landfill on-top (subject landfill); an active Unit I Phase 1 and Phase 2 lined MSW Subtitle D landfill; and the additional active Unit II Phase 1 & 2 lined MSW Subtitle D landfill (Figure 2). In addition, the new Unit III lined MSW Subtitle D landfill expansion is under construction, and will tie into the Unit I landfill to the west and the Unit II landfill to the east, and span across the drainage swale. Semi-annual groundwater monitoring at the closed unlined MSW landfill has historically been conducted at eight shallow monitor wells MW-1, MW-2, MW-6, MW-7, MW-8, MW-9, MW-10, and MW-11, and one intermediate depth monitor well MW-19. Monitor well MW-11 was abandoned on July 1, 2008, due to continually dry well conditions. Monitor well MW-1 is an upgradient background well and the remaining wells are downgradient compliance wells. Monitor well MW-1 has historically only indicated the presence of metals (natural conditions) above established NCGPSs. Monitor wells MW-2, MW-6, MW-7, MW-8, MW-9, MW-10 and MW-11 have primarily indicated VOCs and metals with minor detections of semi-VOCs (SVOCs), herbicides, pesticides and sulfide above NCGPSs. From November 1993 until March 1995, Appendix I (VOCs and metals) Detection Monitoring groundwater sampling was conducted at the closed unlined MSW landfill. However, due to the presence of Appendix I constituents which were either above North Carolina 2L Groundwater Quality Standards (NCGQSs) or showed statistically significant trends (former rule), Appendix II Assessment Monitoring was required to be initiated in May 1995. Appendix I surface water sampling has historically been conducted at US-1 (upstream) and DS-1 (downstream), which are located along a continually flowing drainage ditch that bounds the entire southeast and downgradient portion of the Unit I Phase 1 MSW landfill and closed unlined landfill with C&D on-top areas. No VOCs have been detected above NCGPSs at the surface water sample locations. In addition, no VOCs have been historically detected above established North Carolina Surface Water and Wetland Standards (15A NCAC 02B) (Redbook, May 1, 2007)(NC2BRB); North Carolina 15A NCAC 02B Water Quality Standards for Surface Water (June 10, 2019) (NC2B); or North Carolina In-Steam Target Values for Surface Water (NCTSW) for the South Fork Catawba River (Class WS-IV waters); or EPA National Recommended Water Quality Criteria for Aquatic Life and Human Health (EPAWQC), which are collectively referred to in this report as North Carolina Surface Water and Wetland Standards (NCSWWSs). However, the upstream US-1 samples have indicated very infrequent trace concentrations of J-flagged VOCs including toluene, acetone, chloromethane and carbon disulfide; and the downstream DS-1 samples have indicated very infrequent trace concentrations of J-flagged VOCs including acetone, chloromethane and carbon disulfide, which appear to be due to laboratory contamination, field contamination or upgradient off-site sources. The surface water samples have infrequently indicated metals including cadmium, copper and zinc above NCGPSs or NCSWWSs, however, these metals appear to due to turbidity and/or natural conditions. As required by former NCSWS Rule .1634(g), Buxton Environmental, Inc. prepared a Statistical Groundwater Assessment report on October 26, 1998, in order to determine if groundwater constituents detected at the closed unlined MSW landfill were statistically above established NCGPSs. The investigation utilized groundwater data collected from November 1993 through April 1998. During the assessment, several statistically significant concentrations of VOCs including tetrachloroethene (PCE), trichloroethene (TCE), benzene and methylene chloride were identified. In addition, several statistically significant concentrations of metals including cadmium, chromium, lead, mercury, cobalt, beryllium, vanadium and thallium were identified. According to former NCSWS Rules, if one or more target groundwater constituent was/were detected at significant Page | 5 concentrations above the NCGPS, then the landfill was required to assess the nature and extent of the release and conduct an Assessment of Corrective Measures (ACMs). In September 1999, Buxton Environmental, Inc. conducted additional assessment on the northeast side of the closed unlined MSW landfill, in order to determine groundwater flow direction and groundwater quality across Philadelphia Church Road in the area of the former McGee residence property and the drainage swale to Hoyle Creek. These activities were requested to be conducted by the NCSWS. At the time of the assessment, one water supply well was located at the former McGee property approximately 400 feet upgradient and to the northeast of monitor well MW-2 (Figure 2). During these activities, one intermediate depth saprolite/partially weathered rock (PWR) monitor well MW-19 and one temporary shallow monitor well (TMW-1) were installed to the east of MW-2. Shallow groundwater on the east side of Philadelphia Church Road was determined to flow to the southeast toward a drainage swale of Hoyle Creek and away from the former McGee property. Groundwater samples collected at monitor wells MW-19 and TMW-1 did not indicate the presence of VOCs above method detection limits. However, groundwater sample TMW-1 indicated the presence of 71 ug/l vanadium at levels above the NCGPS. The vanadium detected at TMW-1 appeared to be due to natural conditions. Based on the findings of the September 1999 assessment, the NCSWS determined that ACMs would not be required to be conducted at that time for the closed unlined MSW landfill, since affected groundwater appeared to be contained on-site. On March 27, 2002, Buxton Environmental, Inc. submitted a Request to Alter Appendix II Groundwater Sampling Frequency to the NCSWS concerning the closed unlined MSW landfill. According to former NCSWS Rule .1634(c), the frequency of sampling for Appendix II groundwater parameters can be altered during the active life and post-closure of a landfill, based on site specific groundwater quality and hydrogeologic conditions. At the time of the request, only seven additional Appendix II constituents including mercury, sulfide, acetonitrile, isobutyl alcohol, methyl methacrylate, alpha BHC and beta BHC were detected at concentrations above NCGPSs. Based on review of historical groundwater monitoring data, Buxton Environmental, Inc. requested that Appendix II groundwater sampling be reduced from an annual to a biennial schedule (once every 2 years). In an April 10, 2002 letter, the NCSWS approved biennial Appendix II groundwater monitoring at the closed unlined MSW landfill, however, annual monitoring could be reinstated in the future, if necessary. Appendix II monitoring was requested to re-commence in the fall of 2003. The subject site and surrounding area utilize water supply wells for drinking water. No other potable source for drinking water is currently available. The nearest water supply wells to the closed unlined MSW landfill include two wells at the former McGee residential property. The second water supply well was installed by the McGee’s to supply water to a former mobile home, just prior to 2008. The McGee property was purchased by Gaston County in 2013, and the residence remained unoccupied until new tenants began renting in the spring of 2015 (currently occupied as of the date of this report). Gaston County Environmental Health Department sampled the two water supply wells located at the former McGee property in early 2008 for a full list of parameters including VOCs, however, none were detected. Gaston County Landfill – Hardin site is serviced by a water supply well located approximately 1,400 feet east of the unlined landfill and immediately adjacent to the yard waste composting. Gaston County has evaluated municipal water supply options to service the Gaston County Landfill–Hardin Site, the adjacent Gaston County Energy Park and surrounding area, therefore, this infrastructure improvement is possible in the future. Routine landfill gas monitoring has been conducted by Buxton Environmental, Inc. since September 2006 at six shallow (s) and four deep (d) landfill gas monitor wells (LFG-1s, LFG-2s, LFG-2d, LFG-3s, LFG-3d, LFG-4s, LFG-4d, LFG-5s, LFG-6s and LFG-6d) located along the northeast side of the closed unlined MSW landfill. Page | 6 Methane levels have ranged from 0 to 62.6% by volume. An active landfill gas extraction system with flare was permitted to begin operation on May 5, 2008 along the northeastern side of the closed unlined MSW landfill adjacent to Philadelphia Church Road, in order to gain carbon credit sales. It is Gaston County’s intent to utilized revenues gained from the carbon credit sales to expand and enhance the on-site landfill gas extraction system. On June 30, 2008, landfill gas monitoring was first conducted at the site to determine the effectiveness of the extraction system. Dramatic reductions in methane levels were observed at most of the wells. Based on this information, the methane extraction system appears to be controlling landfill gas migration at the site. An enhanced landfill gas extraction system began operation at the closed unlined landfill and the active Unit I Phase 1 lined MSW landfill on December 1, 2008. According to a Landfill Gas Management & Utilization Plan map prepared by Olver, Inc, sixty-five (65) active landfill gas extraction wells are located at the active C&D landfill over the closed unlined MSW landfill. The extracted landfill gas at the site is being utilized to fuel an adjacent electricity generation plant located to the east across Philadelphia Church Road (Figure 2). Landfill gas monitoring has also been conducted at adjacent on-site structures including the scale house, maintenance building and bailing building since June 2011; and the crawl space of the house located at the former McGee property since September 2013. No detectable levels of methane have been observed in any of the adjacent structures (with the exception of trace detection on 0.1% methane at the bailing building in June 2013, which appears to be a false positive). Landfill gas monitoring has also been conducted at on-site groundwater monitor wells MW-1, MW-12, MW-26 and MW-27 to assist with monitoring the entire Gaston County Landfill site since September 2013 (no detectable levels of methane have been detected at these wells). Landfill gas monitoring was expanded in July 2017 to include groundwater monitor well MW-31. Landfill gas well LFG-7 along with groundwater monitor wells MW-32 and MW-33 were proposed to monitor landfill gas on the northeast side of the Unit I Phase 2 MSW landfill expansion in the July 28, 2020 Landfill Gas Monitoring Plan Update for the combined Unit I Phase 1 and Phase 2 MSW landfill, which was approved by the NCSWS. Landfill gas monitor well LFG-7 was installed on December 2, 2020 to the immediate northeast of the Unit I Phase 2 lined MSW landfill and immediately adjacent to the leachate mixing tank. Monitor wells MW-32 and MW-33 were installed on September 5, 2019 during the Design Hydrogeologic investigation for the Unit I Phase 2 lined MSW landfill expansion, and serve as dual purpose groundwater and landfill gas monitor wells. Based on historical monitoring activities, site topographic features including drainage features and property boundaries, residual methane levels do not appear to currently impact facility structures or property boundaries at the Gaston County Landfill – Hardin Site. According to information outlined in Proposed Solutions to Landfill Gas Contamination of Groundwater prepared in 1999 by GC Environmental, Inc., landfill gas reduction can lower VOC and metal affected groundwater concentrations by reducing the interaction of groundwater with landfill gas. The article indicates that VOCs in landfill gas can impact groundwater quality and the landfill gas can alter the natural geologic chemistry causing metals to more readily dissolve into groundwater. Groundwater delineation and ACMs were conducted at the closed unlined MSW landfill in 2008, in order to comply with NCSWS Rules for continued C&D landfilling on top of closed unlined MSW landfills. During these activities, three shallow monitor wells MW-20, MW-21 and MW-22 were installed to define the horizontal extent of affected groundwater, and two deep monitor wells MW-BD3 and MW-BD4 were installed to define the vertical extent of affected groundwater in the immediate area of and downgradient of the closed unlined landfill. Monitor wells MW-BD3 and MW-BD4 were installed into partially weathered rock (PWR) to depths of approximately 117 and 144 feet below grade, respectively, and were installed adjacent to nested wells MW-B (shallow well) and MW-BD (intermediate depth well) (upgradient background wells for the Unit I Phase 1 lined MSW landfill and located immediately downgradient of the closed unlined MSW landfill). Groundwater sampling for Appendix II constituents was conducted at monitor wells MW-20, MW-21, MW- BD3 and TMW-1 in March 2008, and monitor wells MW-22 and MW-BD4 were sampled for Appendix I constituents in April 2008. A copy of the June 30, 2008 Groundwater Delineation & Assessment of Corrective Measures report, which was prepared by Buxton Environmental, Inc. was submitted to the NCSWS. Page | 7 A CAP was prepared and submitted to the NCSWS on July 1, 2008. The CAP proposed MNA as the remedial approach to treat affected groundwater at the site. Groundwater CoCs including VOCs (benzene, 1,1- dichloroethane (1,1-DCA), 1,2-dichloroethane, 1,4-dichlorobenzene, cis-1,2-dichloroethene (cis-1,2-DCE), methylene chloride, PCE, TCE and vinyl chloride)); metals (beryllium, cadmium, lead and silver); and Appendix II SVOC (3&4 methylphenol) were identified for the site. The CAP also addressed the expansion of the landfill gas extraction system along the southwestern toe of the closed unlined landfill, for the purpose of gaining additional carbon credit sales. As an added benefit, the landfill gas extraction efforts were anticipated to improve groundwater quality at the site. The MNA CAP was approved by the NCSWS on January 26, 2009. The CAP approval letter requested that MNA be conducted at thirteen (13) monitor wells including MW-1, MW-2, MW-6, MW-7, MW-8, MW-9, MW-10, MW-19, MW-21, MW-22, TMW-1, MW-BD and MW-BD4. According to the NCSWS Examples of Approved Groundwater Corrective Measures for Solid Waste Management Facilities document dated March 2007, the approved monitor well network should be sampled for the full suite of MNA groundwater parameters on a semi-annual basis for 2 years (four sampling events) to establish baseline trends and to establish the effectiveness of MNA as an approved remedial option. Following completion of the four baseline sampling events, MNA parameters can be re-evaluated to determine if any the parameters can be removed (based on their technical relevance) from the sampling program. On October 31, 2008, temporary monitor well TMW-1 and deep monitor wells MW-BD2 and MW-BD3 were abandoned in accordance with North Carolina Well Construction and Abandonment Standards, since they were duplicative. The abandonment of these wells was approved by the NCSWS in a September 30, 2008 letter. On August 26, 2010, Buxton Environmental, Inc. submitted the Monitored Natural Attenuation Report to the NCSWS, which included the fourth of four (4th of 4) baseline MNA parameter groundwater sampling results for the site. The report recommended that the biological oxygen demand (BOD), chemical oxygen demand (COD), turbidity and total iron analyses be removed from future routine MNA sampling events, since these constituents were not required to determine evidence of anaerobic biodegradation of chlorinated solvent VOC CoCs (as outlined in the Environmental Protection Agency (EPA) Table 2.3). In addition, the sampling frequency was requested to be reduced from a semi-annual to an annual basis. Following review of the August 26, 2010 Monitored Natural Attenuation Report, the NCSWS issued a response letter dated October 19, 2010. The letter approved the removal of BOD, COD, turbidity and total iron from the required MNA parameter sampling list at the site. However, the letter instructed Gaston County to conduct four (4) additional semi-annual MNA monitoring events to gather additional information to determine the effect of the expanded landfill gas extraction system on the remediation of affected groundwater at the site. On December 19, 2011, alternate monitor well MW-10A was installed immediately adjacent to monitor well MW-10 (which had limited water due to recent drought conditions). Monitor well MW-10A replaced MW-10 during the first semi-annual 2012 groundwater sampling event. Historical groundwater data for MW-10 and MW-10A will be pooled together in future reports. In 2003 and 2011, Gaston County purchased approximately 45 acres to the southwest of the site from the drainage ditch to the South Fork Catawba River. In April 2009, Gaston County purchased 34.16 acres on the northeast side of the landfill. In September 2013, Gaston County purchased the McGee property (14.36 acres) to the immediate northeast of the landfill. This additional property serves as excellent landfill buffer. Gaston County also purchased the Jerry McGee property (PID 16931, 0.46 acres) to the north of the site on October 4, 2013. Page | 8 On June 10, 2014, Buxton Environmental, Inc. submitted the Monitored Natural Attenuation (MNA) Sampling Event-Annual 2013 & Initial MNA Corrective Action Evaluation Report (CAER) to the NCSWS. The primary purpose of the CAER was to demonstrate the effectiveness of MNA to remediate CoC affected groundwater at the site. The CAER report updated the CoC list to include only VOCs (benzene, 1,1-dichloroethane, 1,2- dichloroethane, cis-1,2-dichloroethene, methylene chloride, tetrachloroethene, trichloroethene and vinyl chloride), and aldrin (pesticide). Based on review of the June 10, 2014 MNA – CAER, the NCSWS issued a letter on July 30, 2014 which approved Buxton Environmental Inc’s. proposal to continue MNA monitoring on an annual basis and the proposed monitoring plan. As part of the plan, annual MNA reports were to be prepared, and full CAER reports would be prepared every 5 years. The Monitored Natural Attenuation (MNA) Report – Annual 2014 prepared by Buxton Environmental, Inc. on February 23, 2015 was submitted to the NCSWS. The Monitored Natural Attenuation (MNA) Report – Annual 2015 prepared by Buxton Environmental, Inc. on January 22, 2016 was submitted to the NCSWS. The Monitored Natural Attenuation (MNA) Report – Annual 2016 prepared by Buxton Environmental, Inc. on July 26, 2016 was submitted to the NCSWS. The Monitored Natural Attenuation (MNA) Report – Annual 2017 prepared by Buxton Environmental, Inc. on October 16, 2017 was submitted to the NCSWS. The Monitored Natural Attenuation (MNA) Report – Annual 2018 prepared by Buxton Environmental, Inc. on October 2, 2018 was submitted to the NCSWS. From September 16 through November 11, 2016, Buxton Environmental, Inc. conducted re-development activities at background monitor well MW-1 (also utilized as the background well for Unit I and II lined MSW landfills), in order to attempt to reduce/limit potential sampling related groundwater turbidity as part of the initial Appendix I inorganic constituent (metals) assessment required for lined MSW landfills. The monitor well re-development activities were conducted by swashing/surging and pumping a stainless-steel Proactive Mega-Typhoon pump (connected to a flow rate controller) across the screened portion of the well until discharge water was relatively free of sediment. According the 2008 NCSWS groundwater and surface water sampling guidelines, the exterior pump housing must be constructed of stainless-steel, and the interior pump and moving parts in contact with water must be constructed of stainless-steel or Teflon. Groundwater sampling at MW-1 was historically conducted with a disposable Teflon bailer attached to new nylon rope, prior to December 2016. All remaining closed unlined MSW landfill wells have historically been sampled with bailers. On December 26 and 27, 2017 initial unfiltered groundwater sampling was conducted at all closed unlined landfill monitor wells (eight shallow monitor wells MW-1, MW-2, MW-6, MW-7, MW-8, MW-9, MW-10A and MW-21, and one deep monitor well MW-19); and filtered groundwater sampling was conducted at background monitor well MW-1 by Buxton Environmental, Inc. during the second semi-annual 2017 Appendix I & II groundwater and surface water monitoring event at the subject site. Verification groundwater sampling for metals irregularities was also subsequently conducted at MW-1 on February 21, 2018. During the December 2017 sampling event, downgradient compliance wells MW-2, MW-6, MW-7, MW-8, MW-9, MW- 10A, MW-21 and MW-19 were sampled for metals (unfiltered) with a disposable Teflon bailer attached to new nylon rope. Background monitor well MW-1 was sampled for metals (unfiltered) utilizing low-purge sampling methodology during the December 2017 event, in order to attempt to reduce/limit potential sampling related turbidity as part of the Assessment Monitoring / Alternate Source Demonstration investigation for the metals exceedances at the Unit I and II lined MSW landfills. MW-1 is also utilized as the background well for the Unit Page | 9 I and II landfills. A duplicate filtered metals sample was also collected at monitor well MW-1 (MW-1-F) with a Proactive GoProTM 0.45 micron in-line filter in December 2017, in order to further reduce sample turbidity as part of the Unit I and II landfill metals investigation. All low-purge sampling at MW-1 was conducted utilizing a stainless-steel Proactive® Mega-Typhoon pump (with flow rate controller) which was attached to dedicated 1/2-inch outer diameter (OD) 3/8-inch inner diameter (ID) polyethylene tubing. Unfiltered groundwater samples MW-1, MW-2, MW-6, MW-7, MW-8, MW-9, MW-10A, MW-19 and MW-21 were analyzed for the full list of Appendix II constituents including EPA Method 8260B (VOCs), EPA Method 8270D (semi-VOCs), EPA Methods 6020B and 7470A (metals: antimony, arsenic, barium, beryllium, cadmium, chromium, cobalt, copper, lead, mercury, nickel, selenium, silver, thallium, tin, vanadium and zinc), EPA Method 8081B (pesticides), EPA Method 8082A (polychlorinated biphenyl’s)(PCB’s)), EPA Method 8151A (herbicides), EPA Method 9012B (cyanide) and EPA Method SM 4500-S2-F (sulfide). Filtered groundwater sample MW-1-F was analyzed for Appendix I metals by EPA Method 6020B. The groundwater samples collected on December 26 and 27, 2017 at monitor wells MW-1, MW-2, MW-7, MW-9, MW-10A and MW-21 indicated the presence of Appendix I or II constituents above NCGPSs, which are summarized below. Groundwater sample MW-1 indicated the presence of 39 ug/l chromium and 18B ug/l vanadium above NCGPSs; and also indicated the presence of 19 ug/l nickel, which was elevated above historical pre-low-flow pump data, but was not above the NCGPS of 100 ug/l. Groundwater sample MW-2 indicated the presence of 6.1 ug/l 1,1-dichloroethane and 0.58 ug/l thallium above NCGPSs. Groundwater sample MW-7 indicated the presence of 1.4 ug/l benzene, 6 ug/l vinyl chloride and 6.3 ug/l cadmium above NCGPSs. Groundwater sample MW-9 indicated the presence of 5.3 ug/l cobalt, 10B ug/l vanadium and 1.3 ug/l beta-BHC (Appendix II pesticide) above NCGPSs. Groundwater sample MW-10A indicated the presence of 1.9 ug/l benzene, 4 ug/l tetrachloroethene, 4.1 ug/l trichloroethene, 7 ug/l cobalt and 6.4B ug/l vanadium above NCGPSs. Groundwater sample MW-21 indicated the presence of 2.9 ug/l benzene, 7.4 ug/l methylene chloride, 3.2 ug/l tetrachloroethene, and 0.05 ug/l aldrin (Appendix II pesticide) above NCGPSs. Groundwater sample MW-1-F (filtered sample analyzed for Appendix I metals) did not indicated Appendix I metals above NCGPSs. Groundwater samples MW-6, MW-8 and MW-19 did not indicate Appendix I or II constituents above NCGPSs. On February 21, 2018, groundwater verification sampling was conducted at background monitor well MW-1, due to elevated chromium and nickel concentrations observed in unfiltered groundwater samples collected at MW-1, as well as other unfiltered and filtered groundwater samples at on-site wells (particularly MW-3A located at the Unit I lined MSW landfill), which were collected with the stainless-steel Proactive® Mega-Typhoon pump during the second semi-annual 2017 event (December 2017). Low-purge groundwater sampling was conducted with a stainless-steel Proactive® Mega-Typhoon pump at the Unit I and II MSW landfills from the second-semi-annual 2016 event (December 2016) through the second semi-annual 2017 event (December 2017), in order to attempt to reduce/limit potential sampling related groundwater turbidity. According the 2008 NCSWS groundwater and surface water sampling guidelines, the exterior pump housing must be constructed of stainless-steel, and the interior pump and moving parts in contact with water must be constructed of stainless-steel or Teflon. Groundwater sampling at the site was previously conducted with disposable Teflon bailers attached to new nylon rope, prior to December 2016. Lower than normal water levels and/or slow groundwater recharge at MW-1 (and other on-site wells) resulted in more turbid groundwater conditions than usual during the second semi-annual 2017 sampling event (December 2017). Enviro-Equipment, Inc. (where the pump was purchased) was contacted to determine the material used for construction of the pump, and was indicated to be 303 grade stainless-steel, based on their conversation with Proactive Environmental Products, LLC (Proactive). According to the Penn Stainless Products, Inc. website, 303 stainless-steel contains 18% chromium and 8% nickel for their improved machinability and non-corrosive properties. On February 21, 2018, verification groundwater samples MW-1-B (B = bailer sample) and MW-1-P (P = bailer sample recycled through stainless- steel pump) were collected by first purging 3 well bore volumes of water from MW-1 with a disposable Teflon bailer and new nylon rope. Approximately 1.125 liters of bail water was then collected from MW-1 and placed into a plastic 2 liter pitcher. The MW-1-B sample was collected by stirring the pitcher of water with a plastic utensil (to homogenized the sample) and the sample was immediately poured into a laboratory supplied container. The turbidity of the sample was determined to be 88.92 nephelometric units (NTUs), as measured with an H.F. Scientific Micro TPI Turbidimeter. The MW-1-P sample was prepared by pumping/recycling the Page | 10 remaining 1 liter of water in the pitcher through the stainless-steel Proactive® Mega-Typhoon pump which was connected to a short section of polyethylene tubing, and back into the pitcher for 5 minutes; then the sample was pumped directly into the laboratory supplied container. These verification groundwater samples were analyzed for Appendix I metals by EPA Method 6020B. Groundwater verification sample MW-1-B (bailer) indicated the presence of 88 ug/l chromium, 27 ug/l cobalt, 34 ug/l lead, 0.66 ug/l thallium and 97 ug/l vanadium above NCGPSs. Groundwater sample MW-1-B also indicated the presence of 39 ug/l nickel, which was elevated above historical pre-pump data, but not above the NCGPS of 100 ug/l. Groundwater sample MW-1-P indicated the presence of 350 ug/l chromium (3.98 times MW-1-B), 32 ug/l cobalt, 190 ug/l nickel (4.87 times MW-1-B), 31 ug/l lead, 0.61 ug/l thallium and 99 ug/l vanadium above NCGPSs. Based on these findings, turbid groundwater conditions; coupled with abrasion of the body or moving parts (i.e. impeller) of the 303 grade stainless-steel construction of the Proactive® Mega-Typhoon pump appear to have resulted in elevated chromium and nickel contamination related to the use of the pump during sampling at MW-1. A review of historical groundwater analytical results at monitor well MW-1 was conducted to determine if any elevated concentrations of chromium or nickel had been detected during use of the stainless-steel Proactive® Mega- Typhoon pump. During this review, elevated chromium concentrations (above the NCGPS) and elevated nickel concentrations (above historical pre-pump data, but not above NCGPSs) were detected at monitor well MW-1 on February 24, 2017 and March 13, 2017, during baseline background sampling for the new Unit II Phase 2 MSW landfill. These elevated chromium and nickel concentrations could potentially be the result of contamination caused from the use of the stainless-steel Proactive® Mega-Typhoon pump. Future groundwater sampling at the site was recommended to be conducted with non-metallic down-hole sampling devices, in order to remove the potential for field introduced metals contamination. In October 2018, Mr. Ross Klingman, P.G. with Buxton Environmental, Inc. conducted routine up-keep and maintenance at on-site monitor wells, in order to comply with the March 23, 2017 memorandum from the NCSWS. During these activities, repairs and up-keep were made at the following monitor wells: MW-1 (dirt and vegetation were removed from the cracked original concrete pad, a new concrete veneer was installed over the original cracked concrete pad, and a well construction tag was placed on the stand-up cover); MW-2 (dirt and vegetation were removed from the cracked original concrete pad, a new concrete veneer was installed over the original cracked concrete pad, a new hinge was installed on the stand-up cover lid, and a well construction tag was placed on the stand-up cover); MW-6 (a new concrete pad was installed at grade around the stand-up cover, a new hinge was installed on the stand-up cover lid, and a well construction tag was placed on the stand- up cover); MW-7 (a new concrete pad was installed at grade around the stand-up cover and a well construction tag was placed on the stand-up cover); MW-8 (dirt and vegetation were removed from the concrete pad); MW- 9 (dirt and vegetation were removed from the concrete pad); MW-10 (a new concrete pad was installed at grade around the stand-up cover); MW-10A (dirt and vegetation were removed from the concrete pad); MW-19 (dirt and vegetation were removed from the concrete pad, a new hinge was installed on the stand-up cover lid, and a well construction tag was placed on the stand-up cover); MW-21 (a new concrete pad was installed at grade around the stand-up cover); and MW-22 (dirt and vegetation were removed from the concrete pad and the well tag was glued to the stand-up cover). During the well maintenance activities, the latitude and longitude at each groundwater monitor well were obtained with the “My GPS Coordinates” software, and well construction information was obtained from the well tags, which are presented in Table 2. Page | 11 The Monitored Natural Attenuation (MNA) Sampling Event (Annual 2019); & MNA Corrective Action Evaluation Report (CAER) (Second 5-Year Report) report was prepared on February 14, 2020 by Buxton Environmental, Inc. for the C&D landfill over the closed unlined MSW landfill. The primary purpose of the CAER was to demonstrate continued effectiveness of MNA to remediate CoC affected groundwater at the site. As part of the assessment, an evaluation of pertinent CoCs related to the closed unlined MSW landfill was conducted. Based on this evaluation, the following CoCs were identified: VOCs • benzene • 1,1-dichloroethane (1,1-DCA) • 1,2-dichloroethane (1,2-DCA) • cis-1,2-dichloroethene (cis-1,2-DCE) • methylene chloride • tetrachloroethene (PCE) • trichloroethene (TCE) • vinyl chloride VOC 1,4-Dioxane • 1,4-dioxane (new CoC) Pesticides • aldrin • beta-BHC (new CoC) Metal detections above NCGPSs were also evaluated to determine if they should be considered CoCs. This evaluation utilized historical statistical groundwater analyses conducted at downgradient compliance wells MW-2, MW-6, MW-7, MW-8, MW-9, MW-10/10A, MW-19 and MW-21 during the first semi-annual 2019 monitor event at the closed unlined landfill. Metals are naturally occurring in both soil and groundwater. Concentrations of these metals in groundwater are affected by turbidity, natural variability, geology, geographic location, hydrologic cycle (including acid rain); and ever-changing landfill operations including landfill construction and infrastructure (roads, storm water control systems, landfill slopes, vegetative cover; and subsurface landfill gas, leachate and sewer piping). During landfill construction and normal operation (both inside and outside the waste boundary) native soil horizons are disturbed and/or removed, which result in the soil and groundwater systems inability to naturally buffer themselves through normal physical, chemical and biologic processes causing exacerbated acidification (decreased pH) of the natural hydrogeologic system (especially in the naturally acidic soil of the North Carolina Piedmont) and the mobilization/desorption of metals from their natural state, ultimately impacting groundwater quality. In addition, disturbance of the land during normal landfill operation results in turbid surface water run-off and disturbance of the subsurface, resulting in turbidity (muddying) of the groundwater system. Identifying the metals which were both detected: above NCGPSs at downgradient compliance wells and statistically above background monitor well MW-1; were utilized to determine a list of metals that could potentially be associated with a release from the closed unlined landfill. The only metals that were detected at statistically significant concentrations above background levels at MW-1 and were also above NCGPSs at selected compliance wells were barium, beryllium, cadmium, cobalt, lead and thallium. Background monitor well MW-1 has historically indicated the presence of all of these metals at/or above NCGPSs, with the exception of barium. Each of these metals are naturally occurring at background monitor well MW-1 at varying concentrations, and are often associated with turbid compliance well samples at the site. Due to the complexity of potential source (within landfill waste boundary) and non-point sources (all activities outside of the waste boundary), it is difficult to positively determine if the metals exceedances encountered at a compliance groundwater monitor well are associated with a contaminant release from the closed unlined MSW landfill, or are due to Alternate Sources including both natural or disturbed site conditions. Therefore, metals were recommended to continue to be excluded from CoC list at the present time. Based on historical Appendix I and II groundwater sampling results, unchanged hydrogeologic conditions, updated groundwater CoC list (including VOCs, 1,4-dioxane, and the pesticides aldrin and beta-BHC), the on- site and limited extent of the VOC and pesticide CoC plume which appear to remain in close proximity of the Page | 12 closed unlined landfill, the apparent stable and generally shrinking VOC plume, and potential exposure pathways; the site conceptual model outlined in the June 30, 2008 Groundwater Delineation & Assessment of Corrective Measures report appears to remain adequate for the site at this time. MNA groundwater sampling should continue to be conducted on an annual basis, in order to monitor the continued effectiveness of MNA groundwater remediation at the site. The annual groundwater samples should be analyzed for approved MNA parameters, Appendix I VOCs (by EPA 8260D) and metals (by EPA 6020B), 1,4-dioxane (by EPA 8260D SIM), and the pesticides aldrin and beta-BHC (by EPA 8081B). An annual MNA monitoring report, including BIOCHLOR groundwater modeling to determined continued fate, transport and mass flux of pertinent VOC CoCs, should also be prepared for the site. The next CAER should be prepared and submitted to the NCSWS in five (5) years following completion of the annual 2024 groundwater monitoring event, which is anticipated to be conducted in June 2024. Buxton Environmental, Inc. recommended in the March 19, 2020, Second Semi-Annual 2019 Appendix I & II Groundwater and Surface Water Monitoring report for the closed unlined landfill that the analysis of 1,4- dioxane (SIM) be discontinued during routine semi-annual monitoring at upgradient monitor well MW-1; downgradient monitor wells MW-2, MW-6, MW-8, MW-9, MW-10A, MW-19 and MW-21; and surface water samples SW-1(LL)/US-1 and SW-2(LL)/DS-2, in accordance with the new NCSWS policy that allows 1,4- dioxane (SIM) to be eliminated/reduced from the sampling protocol following two (2) consecutive events with below MDL results. Groundwater samples collected at these wells had not indicated the presence of 1,4- dioxane (SIM or non-SIM) above the MDL during all three (3) historical baseline sampling events (December 2018, June 2019, December 2019). Surface water samples SW-1(LL)/US-1 and SW-2(LL)/US-2 had not indicated the presence of 1,4-dioxane (SIM or non-SIM) above MDL during the last two (2) sampling events (June 2019 and December 2019). However, groundwater and surface water samples at these locations would continue to be analyzed for 1,4-dioxane (non-SIM) as part of the standard Appendix I VOC analysis (EPA Method 8260D; MDL = 13ug/l and PQL = 50 ug/l), for continued monitoring purposes. Groundwater samples at monitor well MW-7 would continue to be analyzed for 1,4-dioxane (by EPA Method 8260 SIM) on a semi- annual basis, due to the historical presence of 1,4-dioxane above the MDL. Based on the findings of the October 31, 2020 First Semi-Annual 2020 Appendix I Groundwater and Surface Water Monitoring report for the closed unlined landfill, Buxton Environmental, Inc. recommended that the analysis of 1,4-dioxane (SIM) continue to be discontinued during future second semi-annual monitoring events at downgradient monitor wells MW-2, MW-6, MW-8, MW-9, MW-10A and MW-19. These samples will continue to be analyzed for 1,4-dioxane (non-SIM) as part of the standard Appendix I VOC analysis for continued monitoring purposes. Groundwater samples collected at monitor wells MW-1 and MW-7 would continue to be analyzed for 1,4-dioxane (SIM) on a semi-annual basis (both events), due to the historical presence of 1,4-dioxane above the MDL at MW-7 and for background monitoring purposes at MW-1. In addition, surface water samples SW-1(LL)/US-1 and SW-2(LL)/DS-1 would also be analyzed for 1,4-dioxane (SIM) on a semi-annual basis, in order to monitor 1,4-dioxane affected groundwater detected at several monitor wells (including MW-7, MW-B and MW-BD), which are associated with the C&D landfill over the closed unlined MSW landfill. On July 12, 2021, Buxton Environmental, Inc. completed the Monitored Natural Attenuation (MNA) Groundwater Report – Annual 2020 for the Gaston County C&D landfill over the closed unlined MSW landfill, in order to demonstrate the continued effectiveness of MNA to remediate CoC affected groundwater at the site. From August 8 through 11, 2020, annual 2020 MNA groundwater monitoring activities were conducted at twelve (12) MNA monitor wells including MW-1, MW-2, MW-6, MW-7, MW-8, MW-9, MW-10A, MW-19, MW-21, MW-22, MW-BD and MW-BD4, which were analyzed for Appendix I VOCs and metals, 1,4-dioxane (SIM) and pesticides (aldrin and beta-BHC). Groundwater samples collected at MNA monitor wells MW-7, MW-10A, MW-21, MW-BD and MW-BD4 indicated the presence of VOC CoCs above NCGPSs. Groundwater sample MW-7 indicated the presence of 1.2 ug/l vinyl chloride. Groundwater sample MW-10A indicated the presence of 2.2 ug/l PCE. Groundwater sample MW-21 indicated the presence of 2.3 ug/l Page | 13 benzene, 6.3 ug/l 1,4-dichlorobenzene (first-time detection above NCGPS; currently a VOC non-CoC due to non-persistent CoC determination criteria used for the site) and 3.4 ug/l PCE. Groundwater sample MW-BD indicated the presence of 1.1 ug/l benzene and 14 ug/l 1,1-DCA. Groundwater sample MW-BD4 indicated the presence of 7.9 ug/l 1,1-DCA and 1.3 ug/l PCE. Groundwater sample collected at MW-21 indicated the presence of 0.25 ug/l aldrin (pesticide CoC) above the NCGPS. Groundwater sample MW-7 indicated the presence of 18 ug/l 1,4-dioxane (SIM) above the NCGPS. The groundwater samples collected at MW-1, MW- 2, MW-7, MW-9 and MW-19 indicated the presence of Appendix I metals (non-CoCs) above NCGPSs. Based on evaluation of the historical data, the potential for anaerobic biodegradation to naturally treat residual low concentrations of chlorinated solvent VOC CoC affected groundwater at and in the immediate vicinity of the closed unlined landfill appears to remain an effective non-active remedial option for the site, with generally limited to strong potential. However, the anaerobic biodegradation potential transitions to inadequate, laterally, as you move away from the waste boundary. Based on evaluation of historical data, VOC CoC affected groundwater concentrations associated with the C&D landfill over the closed unlined MSW landfill appear to be generally stable and/or shrinking with time. The VOC CoC groundwater plume is oriented north-northeast to south-southwest with a similar orientation and shape as the closed unlined landfill and is approximately 2,850 feet in length and has a maximum width of 1,400 feet along the southwest toe. The VOC plume generally extends vertically from the water table surface located ~25 feet (average) below grade at MW-B to a depth of ~145 feet below grade near the base of deep well MW-BD4, therefore, the plume has an approximate thickness of 120 feet. Based on this data, the VOC CoC plume is located on-site and immediately surrounding the C&D landfill over the closed unlined MSW landfill. Groundwater samples collected at Unit I Phase 1 lined MSW landfill shallow monitor wells MW-15 and MW-16 (used for delineation purposes) in August 2020 indicated the presence of 3 ug/l benzene and 1 ug/l vinyl chloride, and 3.2 ug/l benzene, respectively, which were above NCGPSs and are also VOC CoCs for the closed unlined MSW landfill. These wells are located downgradient and approximately 1,000 and 1,200 feet, respectively, to the south of the closed unlined MSW landfill waste boundary, and located along the southeast toe of the Unit I Phase 1 landfill. Historical groundwater samples collected at monitor well MW-15 have indicated on-again/off-again exceedances of benzene, 1,2- dichloroethane and/or vinyl chloride above NCGPSs since April 2010. Historical groundwater samples collected at monitor well MW-16 have indicated on-again/off-again exceedances of benzene and/or vinyl chloride above NCGPSs since December 2008. Based on a preliminary evaluation of historical data, the VOCs detected at MW-15 and MW-16 appear (at this time) to be independent of the groundwater plume associated with the C&D landfill over the closed unlined MSW landfill, according to chemical signatures, groundwater flow direction and groundwater flow rates. A more detailed evaluation of groundwater quality and hydrogeologic conditions in this area of the landfill will be addressed in subsequent investigations at the site. The approximate horizontal and vertical extent of VOC CoC (including 1,4-dioxane) affected groundwater associated with the C&D landfill over the closed unlined landfill appears to remain adequately defined, on-site and within close proximity of the closed unlined landfill. Aldrin (pesticide CoC) (when present) appears to be confined on-site and within the shallow aquifer in the immediate area of abandoned monitor well MW-21 on the downgradient southeast corner of the C&D landfill over the closed unlined MSW landfill. Beta-BHC (when present) appears to be confined on-site and within the shallow aquifer in the immediate area of monitor wells MW-9 and MW-21 located on the downgradient southeast and southeast sides, respectively, of the C&D over the closed unlined MSW landfill. The simultaneous MNA and landfill gas extraction activities appear to be independently and/or dually effectively remediating VOC CoC affected groundwater at and within the immediate area of the C&D landfill over the closed unlined MSW landfill. Based on the BIOCHLOR groundwater modeling activities, trace levels of modeled VOC CoC affected groundwater constituents including 1,1-DCA, PCE, TCE and cis-1,2-DCE would be expected to be reduced to less than 1 ug/l (modeled criteria) or their respective NCGPS, prior to exceeding the 250 foot compliance boundary along the downgradient side of the closed unlined landfill by anaerobic biodegradation. However, modeled VOC CoC constituent concentrations above NCGPSs could migrate beyond the 250-foot compliance boundary with no anaerobic biodegradation. Routine semi-annual and annual MNA groundwater monitoring previously conducted at MW-21 will be conducted at a dual purpose monitor well MW-35 in the future. Monitor well MW-35 will also serve as a downgradient compliance monitor well for the Unit I Phase 2 lined MSW landfill Page | 14 expansion. Based on the findings of this and historical groundwater assessment, Buxton Environmental, Inc. made the following recommendations: A more refined horizontal extent of the VOC and pesticides (aldrin and beta-BHC) CoC plumes migrating from the C&D landfill over the closed unlined MSW landfill will be able to be conducted in the future with aid from new Unit I Phase 1 & 2 MSW landfill shallow monitor wells MW-32, MW-33, MW-34 and MW-35 (also a dual purpose new MNA well that replaces MW-21), and existing shallow monitor wells MW-15 and MW-16, which are installed between the toe of the Unit I Phase 1 & 2 lined MSW landfill and the drainage swale. On August 13, 2020, monitor well MW-21, which was a downgradient compliance well for the closed unlined MSW landfill and located within the central footprint of the Unit I Phase 2 lined MSW landfill expansion, was abandoned by the over-drilling method prior to construction of the landfill expansion (Figure 2). Prior to abandonment, monitor well MW-21 was utilized for routine monitoring purposes and was left undisturbed on a soil pedestal during the early excavation of the Unit I Phase 2 landfill expansion area. The soil pedestal and the casing portion of the MW-21 were eventually required to be systematically lowered down to base grade during final excavation activities, with oversight by Buxton Environmental, Inc. Routine semi-annual and annual MNA groundwater monitoring previously conducted at MW-21 will be conducted at a dual purpose monitor well MW-35 in the future. Monitor well MW-35 will also serve as a downgradient compliance monitor well for the Unit I Phase 2 lined MSW landfill expansion. These activities were proposed in the July 21, 2020 Water Quality Monitoring Plan Update prepared by Buxton Environmental, Inc. for the Unit I Phase 1 (existing) and Phase 2 (~13 acre lateral expansion) Lined Subtitle D Municipal Solid Waste (MSW) landfill, which was approved by the NCSWS. From December 2, 2020 to January 21, 2021, Buxton Environmental, Inc. conducted monitor well installation; and four (4) initial independent background Appendix I groundwater and one (1) surface water monitoring event activities conducted at the Unit I Phase 2 lined MSW landfill expansion. A copy of the September 9, 2021 Monitor Well Installation; & Four (4) Initial Independent Background Appendix I Groundwater & One (1) Surface Water Monitoring Event Activities – Unit I Phase 2 – Lined MSW Subtitle D Landfill Expansion report was submitted to the NCSWS. These activities were conducted to determine hydrogeologic characteristics and monitor baseline water quality of the site, prior to issuance of the Permit-to-Operate and placement of MSW in the new landfill expansion. The Permit-to-Operate the Unit I Phase 2 MSW landfill expansion was issued by the NCSWS on February 25, 2021, and the first waste was placed in the new landfill expansion during the week of March 1, 2021. On December 2, 2020, dual purpose monitor well MW-35 was installed at the toe of the southeast corner of the Unit I Phase 2 lined MSW landfill expansion. Routine semi- annual and annual MNA groundwater monitoring previously conducted at closed unlined MSW landfill with C&D on-top monitor well MW-21 (abandoned) will be conducted at dual purpose monitor well MW-35. Monitor well MW-35 will also serve as a downgradient compliance monitor well for the Unit I Phase 2 lined MSW landfill expansion. Groundwater samples collected at upgradient background monitor well MW-1 did not indicate the presence of target Appendix I VOCs, metals or 1,4-dioxane (non-SIM or SIM) above NCGPSs. Upgradient background monitor well MW-B indicated the presence of 14 ug/l 1,4-dioxane above the NCGPS (source from upgradient closed unlined MSW landfill). Upgradient background monitor well MW-BD indicated the presence of 1.3 ug/l benzene, 14 ug/l 1,1-dichloroethane and 14 ug/l 1,4-dioxane above NCGPSs (source upgradient closed unlined MSW landfill). Groundwater samples collected at monitor well MW-32 indicated the presence of 4.4 ug/l beryllium and 21 ug/l lead above NCGPSs. Groundwater samples collected at monitor well MW-33 indicated the presence of 16 ug/l chromium, 11 ug/l cobalt, 27 ug/l lead, 1.5 ug/l thallium and 63 ug/l vanadium above NCGPSs. Groundwater samples collected at monitor well MW-34 indicated the presence of 1,100 ug/l barium, 7.9 ug/l beryllium, 11 ug/l chromium, 15 ug/l cobalt, 49 ug/l lead, 2 ug/l thallium and 75 ug/l vanadium above NCGPSs. The metal exceedances at the monitor wells MW-32, MW-33 and MW- 34 appear to be the result of sample turbidity and/or natural conditions, as no detections of non-naturally occurring constituents (namely VOCs) were detected/co-detected at these wells. Groundwater samples collected at monitor well MW-35 indicated the presence of benzene up to 7.5 ug/l, 1,2-dichloroethane up to 6.5 ug/l, tetrachloroethene up to 1.3 ug/l, 3.5 ug/l 1,4-dioxane and 12 ug/l vanadium above NCGPSs. An evaluation Page | 15 of signature fingerprint VOCs historically detected above NCGPSs at closed unlined MSW landfill wells MW- 10/10A, MW-11 and MW-21 (potential source area; wells located immediately downgradient of the closed unlined MSW landfill and upgradient of Unit I Phase 1 lined MSW landfill), and leachate samples LEACHATE-UNIT I (W) (leachate generated at Unit I Phase 1 Cell 1) (potential source area) and LEACHATE-UNIT I (E) (leachate generated at Unit I Phase 1 Cell 2) (potential source area) was conducted, in order to determine a potential source of VOC impacted groundwater detected above NCGPSs at new dual purpose monitor well MW-35. Based on this evaluation, the VOCs detected above NCGPSs at monitor well MW-35 primarily appear to be from the Unit I Phase 1 lined MSW landfill, due to the presence of signature fingerprint VOCs 1,2-DCA and 1,4-dioxane being historically detected in both Unit I Phase 1 leachate samples LEACHATE-Unit I (W & E), and the historical absence of above NCGPS 1,2-DCA and 1,4-dioxane in immediately adjacent and hydrogeologically upgradient closed unlined MSW landfill monitor wells MW- 10/10A, MW-11 and MW-21. However, the PCE detected above NCGPSs at monitor well MW-35 may be the result of comingling with the upgradient closed unlined MSW landfill groundwater plume, due to the presence of above NCGPS PCE detected during each of the four background sampling events at monitor well MW-35, and the absence of PCE from ever being detected above the MDL in LEACHATE-Unit I (E) samples (which characterizes leachate for the Unit I Phase 1 Cell 2 landfill located adjacent to the MW-35 area). Based on these findings, four (4) initial background Assessment Monitoring (full list of Appendix II constituents) events were recommended to be conducted at Unit I Phase 1 & 2 lined MSW landfill monitor wells MW-15, MW-16 and MW-35 on a semi-annual basis, as required by NCSWS rules for the continued presence of above NCGPS Appendix I VOC and metal exceedances at these wells. The initial full Appendix II monitoring event was proposed to be conducted in December 2021 during the second semi-annual 2021 event, which coincides with routine biennial (every 2-years) Appendix II monitoring sampling for the closed unlined MSW landfill. The need for additional groundwater assessment and/or delineation will be evaluated following completion of the four (4) background Appendix II monitoring events. According to historical and the August 2021 surface water analytical results, target Appendix I VOCs (including 1,4-dioxane) have not been detected above established NCSWWSs or NCGPSs in upstream sample US-1 or downstream sample DS-1 (exit downstream surface water sample located at the confluence of all on- site landfill tributaries on the southeast property boundary. These surface water samples have infrequently indicated Appendix I metals above NCSWWSs or NCGPSs, however, appear to be the result of turbidity or natural conditions. Based on these results, Appendix I constituent affected groundwater associated with all Gaston County – Hardin Site landfills have not impacted surface water quality above established NCSWWSs or NCGPSs at exit downstream surface water sample SW-1 (LL)/DS-1, which further demonstrates that Appendix I VOC affected groundwater remains on-site. On June 2, 2021 Buxton Environmental, Inc. conducted the second quarter 2021 landfill gas monitoring activities at the Gaston County Landfill – Hardin Site. This information was also presented in the above September 9, 2021 report. During these activities, methane monitoring was also conducted at Unit I Phase 1 & 2 lined MSW landfill monitor wells MW-35, MW-15 and MW-16 (located in a southwest trending line between the southeast toe of the Unit I Phase 1 landfill and the drainage swale), in order to determine if an additional potential source existed for above NCGPS VOCs historically detected in groundwater samples at monitor wells MW-35 (benzene, 1,2-DCA, 1,4-dioxane and PCE), MW-15 (benzene, 1,2-DCA and vinyl chloride) and MW- 16 (benzene and vinyl chloride). Monitor well MW-15 indicated the presence of 0.4% methane by-volume (8% of the lower-explosive-limit (LEL) of 5.0% methane by-volume). Monitor wells MW-35 and MW-16 did not indicate the presence of methane. Monitor well MW-3A was added on September 23, 2021; and MW-10A (compliance groundwater well for the adjacent closed unlined MSW landfill) was added on December 15, 2021 to the quarterly landfill gas monitoring activities outlined in the July 28, 2020 Landfill Gas Monitoring Plan Update for the combined Unit I Phase 1 and Phase 2 MSW landfill, in order to assist with the evaluation of the source, cause and extent of methane and its impact to groundwater quality in this area of the site. A summary of historical % methane-by-volume results at these wells is provided below. Page | 16 % Methane (CH4)-By-Volume MW-3A MW-10A MW-15 MW-16 MW-34 MW-35 6/2/21 -- -- 0.4 0 0 0 9/23/21 0 -- 0.4 0 0 0 12/15/21 0 0 0 0.2 0 0 3/25/22 0 0 0 0.5 0 0 6/6/22 0 0 0 0 0 0 9/12/22 0 0 0 0.5 0 0 12/31/22 0 0 0 0.9 0 0 Based on this data, the methane detected at monitor wells MW-15 (June and September 2021) and MW-16 (December 2021, March 2022, September 2022 and December 2022) appears to be from the Unit I Phase 1 lined MSW landfill, due to the absence of methane at closed unlined MSW landfill monitor well MW-10A (nearest alternate methane source area) and dual purpose monitor well MW-35, along with evidence that fingerprint VOC CoC affected groundwater historically detected at monitor wells MW-15, MW-16 and MW-35 and leachate samples have been found to be solely attributable to the Unit I Phase 1 landfill (as discussed above and below). Additional landfill gas assessment will be required in this area of the site. From August 28 through 31, 2021, Buxton Environmental, Inc. conducted the first semi-annual 2021 Appendix I & II (pesticide CoCs aldrin and beta-BHC at select wells) groundwater, surface water and leachate Detection Monitoring and cursory Assessment Monitoring activities at the Unit I Phase 1 & 2 lined MSW landfill (the associated summary report was prepared on February 11, 2022). Appendix II CoC pesticides aldrin and beta- BHC were only analyzed at upgradient monitor wells MW-1 and MW-BD, and downgradient dual purpose monitor well MW-35 as part of on-going MNA groundwater assessment at the closed unlined MSW landfill with C&D landfill on-top, and to initiate preliminary Appendix II Assessment Monitoring requirements and determine the source/sources associated with Appendix I constituent exceedances at Unit I Phase 1 & 2 MSW landfill monitor wells MW-15, MW-16 and MW-35. Dual purpose monitor well MW-35 was installed to monitor the southeast corner of the Unit I Phase 2 lined MSW landfill expansion, and replace former closed unlined MSW landfill monitor well MW-21. Groundwater sample MW-35 indicated the presence of Appendix II pesticide CoC constituents aldrin and beta-BHC at 0.37 ug/l and 0.21P ug/l beta-BHC, respectively, which were first-time detections above NCGPSs. The source of these pesticides appeared to be from the upgradient closed unlined MSW landfill, as similar levels of aldrin and BHC were historically detected at former monitor well MW-21 located approximately 350 feet upgradient and to the north of MW-35. This information further supports the potential for a co-mingled groundwater plume (primarily VOCs from closed unlined and Unit I Phase 1 landfills), which have historically been detected between the eastern edge of the Unit I Phase 1 lined MSW landfill and the drainage swale at monitor wells MW-35, MW-15 and MW-16. Additional assessment will be required in this area of the site. The groundwater samples collected at monitor wells MW-1 and MW- BD did not indicate the presence of aldrin or beta-BHC above MDLs. Four (4) initial background Appendix II (full list) Assessment Monitoring events were recommended to be conducted at Unit I Phase 1 & 2 lined MSW landfill monitor wells MW-15, MW-16 and MW-35, as required by NCSWS rules. From August 28 through October 25, 2021, Buxton Environmental, Inc. conducted Annual 2021 MNA groundwater monitoring activities at twelve (12) MNA monitor wells including MW-1, MW-2, MW-6, MW-7, MW-8, MW-9, MW-10A, MW-19, MW-22, MW-35 (replacement well for former MW-21, and dual purpose well for closed unlined and Unit I MSW landfills), MW-BD and MW-BD4 at the Gaston County C&D landfill over the closed unlined MSW landfill. The Monitored Natural Attenuation (MNA) Groundwater Report – Annual 2021 was completed on January 27, 2023, in order to demonstrate the continued effectiveness of MNA to remediate CoC affected groundwater at the site. Based on this assessment, the potential for anaerobic biodegradation to naturally treat residual low concentrations of chlorinated solvent VOC CoC affected Page | 17 groundwater at and in the immediate vicinity of the closed unlined landfill appears to remain an effective non- active remedial option for the site, with generally limited to strong potential. However, the anaerobic biodegradation potential transitions to inadequate, laterally, as you move away from the waste boundary. VOC CoC affected groundwater concentrations associated with the C&D landfill over the closed unlined MSW landfill appear to be generally stable and/or shrinking with time. The approximate horizontal and vertical extent of VOC CoC (including 1,4-dioxane) affected groundwater associated with the C&D landfill over the closed unlined landfill appears to remain adequately defined, on-site and within close proximity of the closed unlined landfill. Aldrin (pesticide CoC) (when present) appears to be contained on-site and within the shallow aquifer in the immediate area of abandoned monitor well MW-21 and its dual purpose downgradient replacement well MW-35 on the downgradient southeast corner of the C&D landfill over the closed unlined MSW landfill. Beta- BHC (when present) appears to be contained on-site and within the shallow aquifer in the immediate area of monitor wells MW-8 MW-9 on the immediate southwest corner of the closed unlined MSW landfill; and within the shallow aquifer in the immediate area of abandoned monitor well MW-21 and its dual purpose downgradient replacement well MW-35 on the downgradient southeast corner of the C&D landfill over the closed unlined MSW landfill. Based on the BIOCHLOR groundwater modeling activities, trace levels of modeled VOC CoC affected groundwater constituents including 1,1-DCA, PCE, TCE and cis-1,2-DCE would be expected to be reduced to less than 1 ug/l (modeled criteria) or their respective NCGPS, prior to exceeding the 250 foot compliance boundary along the downgradient side of the closed unlined landfill by anaerobic biodegradation. However, modeled VOC CoC constituent concentrations above NCGPSs could migrate beyond the 250-foot compliance boundary with no anaerobic biodegradation. From December 28, 2021 through January 3, 2022, Buxton Environmental, Inc. conducted the second semi- annual 2021 Appendix I & II (select wells) groundwater, surface water and leachate Detection Monitoring (Appendix I constituents) and preliminary Assessment Monitoring (Appendix II constituents) activities at the Gaston County Unit I Phase 1 & 2 lined MSW landfill. The associated summary report was prepared on July 19, 2022 and was subsequently submitted to the NCSWS. During these activities, the first (1st) of four (4) background Appendix II (full list) monitoring was conducted at downgradient compliance wells MW-15, MW- 16 and MW-35, in order to continue Assessment Monitoring requirements and determine the source/sources of both Appendix I and II constituents exceedances historically detected in the area between the east side of the Unit I Phase 1 MSW landfill and the drainage swale. Groundwater sample MW-15 indicated the presence of 7.6 ug/l benzene and 0.072 ug/l beta-BHC (Appendix II pesticide CoC) (first-time exceedance of NCGPS). Groundwater sample MW-16 indicated the presence of 8.3 ug/l cobalt and 0.085 ug/l beta-BHC (first-time exceedance of NCGPS). Groundwater sample MW-35 indicated the presence of 5.8 ug/l benzene, 4.8 ug/l 1,2- dichloroethane, 1.1 ug/l tetrachloroethene and 0.079P ug/l beta-BHC. The beta-BHC detected above the NCGPS at monitor wells MW-15, MW-16 and MW-35 appeared to be part of a co-mingled VOC and pesticide groundwater plume from the upgradient closed unlined MSW landfill and the Unit I Phase 1 lined MSW landfill, based on historical groundwater quality data at these wells and upgradient monitor wells MW-10/10A, MW-11 (abandoned) and MW-21 (abandoned). The second (2nd) of four (4) initial background Appendix II (full list) Assessment Monitoring events was recommended to be conducted at monitor wells MW-15, MW-16 and MW-35 during the first semi-annual 2022 monitoring event. In addition, leachate samples LEACHATE- UNIT I (W) and LEACHATE-UNIT I (E) were recommended to be analyzed for Appendix II pesticides aldrin and beta-BHC, in order to assist with the continued source area assessment being conducted between the east side of the Unit I Phase 1 landfill and the drainage swale. Based on the findings of the first semi-annual 2022 groundwater, surface water and leachate monitoring event conducted at the Unit I Phase 1 & 2 MSW and closed unlined MSW landfills in August 2022, the detection of Appendix II pesticide CoCs aldrin and beta-BHC along with other in-common Appendix I constituents (elevated benzene and 1,2-dichloroethane only found at Unit I samples) in leachate samples LEACHATE-UNIT I (E) and LEACHATE-UNIT I (W) (Appendix C) and recent detections of the landfill gas methane at monitor wells MW-15 and MW-16 demonstrates that the Unit I Phase 1 & 2 lined MSW landfill is a likely primary source for VOC and pesticide affected groundwater historically detected at above NCGPSs at Unit I Phase 1 & Page | 18 2 MSW landfill compliance monitor wells MW-15, MW-16 and MW-35 (dual purpose well) located between the eastern edge of the Unit I Phase 1 lined MSW landfill and the drainage swale. However, a portion of this affected groundwater plume has the potential to have co-mingled with affected Appendix I and II affected groundwater (namely tetrachloroethene and pesticides) from the upgradient and adjacent closed unlined MSW landfill, based on groundwater flow direction and historical groundwater analytical data at monitor well MW- 10/10A, and former monitor wells MW-11 and MW-21. Additional assessment will be required to determine potential source areas in this area of the site. Historical Appendix I and/or II groundwater analytical results for current and former closed unlined MSW landfill monitor wells MW-1, MW-2, MW-6, MW-7, MW-8, MW-9, MW-10/10A, MW-11 (abandoned), MW- 19, MW-21 (abandoned) and MW-35 are provided in Tables 6a through 6k, respectively. Historical Appendix I and/or II groundwater analytical results at Unit I Phase 1 & 2 lined MSW landfill monitor wells MW-B, MW- BD, MW-15 and MW-16 are provided in Appendix B. Leachate analytical results collected at the Unit I Phase 1 & 2 lined MSW landfill in August and December 2022 are provided in Appendix C. Page | 19 3.0 GROUNDWATER AND SURFACE WATER MONITORING ACTIVITIES From December 29 to 31, 2022, Buxton Environmental, Inc. conducted the second semi-annual 2022 Appendix I groundwater and surface water Detection Monitoring event at the subject site. Groundwater monitoring activities were conducted at seven (7) shallow monitor wells including MW-1, MW-2, MW-6, MW-7, MW-8, MW-9 and MW-10A, and one intermediate depth monitor well MW-19. Monitor well MW-1 is an upgradient background well and the remaining wells are downgradient compliance wells. Surface water monitoring was also conducted at two locations, US-1 (upstream) and DS-1 (downstream), which are located along a drainage ditch on the southwest side of the site. As part of this assessment, full Appendix II sampling conducted at downgradient Unit I Phase I & 2 compliance wells MW-15 and MW-16 was evaluated, in order to continue Assessment Monitoring requirements and determine the source/sources of both Appendix I and II constituents exceedances historically detected in the area between the east side of the Unit I Phase 1 MSW landfill and the drainage swale. In addition, pesticide contaminants-of-concern (CoCs) aldrin and beta BHC were also analyzed at Unit I Phase I & 2 lined MSW landfill leachate samples LEACHATE-UNIT I (E) and LEACHATE-UNIT I (W) for the second consecutive event as part of the above mentioned Assessment Monitoring investigation. Prior to conducting groundwater sampling activities, groundwater levels were obtained from each well with a depth-to-water electrode to the nearest 0.01 foot. Groundwater gauging data is provided in Table 1. Following the gauging activities, monitor wells MW-1, MW-2, MW-6, MW-7, MW-8, MW-9, MW-10A and MW-19 were purged of three well bore volumes of water or until dryness with a disposable Teflon bailer attached to new nylon rope. The groundwater samples were collected with a disposable Teflon bailer attached to new nylon rope. Field parameters including pH, conductivity and temperature were collected following purging at each well with a calibrated HANNA Instruments-GroLine meter. Field parameter data is provided in Table 2. Surface water samples US-1 and DS-1 were grab samples from the drainage ditch. Field parameters pH, conductivity and temperature were collected at the surface water sampling locations and the leachate sample locations with the calibrated HANNA Instruments-GroLine meter. Field parameter data is provided in Table 2. Groundwater samples MW-1, MW-2, MW-6, MW-7, MW-8, MW-9, MW-10A and MW-19, and surface water samples US-1 and DS-1 were analyzed for Appendix I VOCs by EPA Method 8260D (VOCs plus 1,4-dioxane (non-SIM)) and Appendix I metals by EPA Method 6020B. Groundwater sample MW-1 and surface water samples US-1 and DS-1 were also analyzed for 1,4-dioxane by EPA Method 8260D (SIM, to achieve the 3 ug/l LOQ/PQL/RL requirement). Groundwater samples MW-7 , MW-8 and MW-9. For quality control purposes, an equipment blank was analyzed for Appendix I VOCs (plus 1,4-dioxane (non-SIM)) by EPA Method 8260D. The equipment blank was prepared in the field by pouring laboratory supplied de-ionized water through a decontaminated Teflon bailer into the sample containers. The samples were collected in general accordance with NCSWS protocol, immediately poured into laboratory supplied containers, appropriately labeled (with sample identification, sample depth, date and time), placed in a cooler with wet ice, transferred to the laboratory with chain-of-custody documentation. The samples were analyzed by Pace Analytical Services, LLC (North Carolina License # 329) in West Columbia, South Carolina. During the groundwater sampling activities, Buxton Environmental, Inc. conducted a routine up-keep and maintenance inspection at on-site monitor wells, in order to comply with the March 23, 2017 memorandum from the NCSWS. The monitor wells were locked, appeared to be in good condition, and in compliance with NCSWS standards. Page | 20 4.0 SITE HYDROGEOLOGY 4.1 Shallow Groundwater Flow Direction and Rate Based on groundwater levels obtained during the second semi-annual 2022 event, the predominate shallow groundwater flow direction in the area of the closed unlined MSW landfill is to the west southwest, southwest and south southwest toward on-site tributaries and ultimately the South Fork Catawba River. Shallow groundwater flow on the northeast corner of the site across Philadelphia Church Road is to the southeast toward Hoyle Creek. A shallow groundwater flow direction map is provided in Figure 3. The hydraulic gradient, groundwater flow direction, hydraulic conductivity and average linear groundwater velocity at each closed unlined landfill monitor well is provided in Table 3. The horizontal hydraulic gradient observed across the closed unlined MSW landfill between shallow monitor wells MW-2 and MW-9 is 0.034 feet per feet (ft/ft). Average linear groundwater velocities in the immediate area of shallow on-site monitor wells were determined using the following equation developed by Darcy (1856) (as described in Fetter (1988)).: Vx = K/ne x dh/dl Where: Vx = average linear groundwater velocity (ft/day) K = hydraulic conductivity at respective well (ft/day) ne = effective porosity (see Table 3 for values utilized) dh/dl = hydraulic gradient (ft/ft) in the vicinity of the respective well The average linear groundwater velocity for the shallow aquifer ranged from 0.01 ft/day (3.65 ft/year) at monitor well MW-8 to 0.29 ft/day (105.85 ft/year) at monitor well MW-7. Page | 21 5.0 SECOND SEMI-ANNUAL 2022 ANALYTICAL RESULTS 5.1 Groundwater, Surface Water and Quality Control Analytical Results – Closed Unlined MSW Landfill The groundwater and surface water analytical results for the closed unlined MSW landfill during the second semi-annual 2022 monitoring event are presented in Tables 4 and 5, respectively, and are illustrated in Figure 4. Laboratory data sheets are presented in Appendix D. Groundwater Water Analytical Results Groundwater samples MW-2 and MW-10A indicated Appendix I constituents above NCGPSs. A summary of the groundwater results is provided below. MW-1 Groundwater sample MW-1 did not indicate target Appendix I constituents above method detection limits. MW-2 Groundwater sample MW-2 indicated the presence of 11 ug/l cobalt above the NCGPS. MW-6 Groundwater sample MW-6 did not indicate target Appendix I constituents above method detection limits. MW-7 Groundwater sample MW-7 did not indicate target Appendix I constituents above method detection limits. MW-8 Groundwater sample MW-8 did not indicate target Appendix I constituents above method detection limits. MW-9 Groundwater sample MW-9 did not indicate target Appendix I constituents above method detection limits. MW-10A Groundwater sample MW-10A indicated the presence of 1.8 ug/l tetrachloroethene above the NCGPS. MW-19 Groundwater sample MW-19 did not indicate target Appendix I constituents above method detection limits. None of the groundwater samples collected at the closed unlined MSW landfill indicated the presence of 1,4- dioxane (SIM or non-SIM) above the MDL. The presence of 1,4-dioxane (non-SIM or SIM) above the MDL is criteria for continued 1,4-dioxane (SIM) analysis at compliance monitor wells based on NCSWS guidance. Page | 22 No first-time exceedances of target Appendix I constituents were detected above NCGPSs during the second semi-annual 2022 sampling event, therefore, a 14-Day Notification of Groundwater Protection Standards Exceedance form is not required to be submitted to the NCSWS. Surface Water Analytical Results Surface water samples US-1 and DS-1 did not indicate the presence of target Appendix I VOCs, 1,4-dioxane (SIM or non-SIM) or metal constituents above the lowest of: established North Carolina Surface Water and Wetland Standards (15A NCAC 02B) (Redbook, May 1, 2007)(NC2BRB); North Carolina 15A NCAC 02B Water Quality Standards for Surface Water (June 10, 2019) (NC2B); or North Carolina In-Steam Target Values for Surface Water (NCTSW) for the South Fork Catawba River (Class WS-IV waters); or EPA National Recommended Water Quality Criteria for Aquatic Life and Human Health (EPAWQC), which are collectively referred to in this report as North Carolina Surface Water and Wetland Standards (NCSWWSs). In addition, surface water samples US-1 and DS-1 did not indicate the presence of 1,4-dioxane (SIM or non- SIM) above the MDL. According to historical and the second semi-annual 2022 surface water analytical results, target Appendix I VOCs (including 1,4-dioxane) have not been detected above established NCSWWSs or NCGPSs in upstream sample US-1 or downstream sample DS-1 (exit downstream surface water sample located at the confluence of all on-site landfill tributaries on the southeast property boundary). These surface water samples have infrequently indicated Appendix I metals above NCSWWSs or NCGPSs, however, appear to be the result of turbidity or natural conditions. Based on these results, Appendix I constituent affected groundwater associated with all Gaston County – Hardin Site landfills have not impacted surface water quality above established NCSWWSs or NCGPSs at exit downstream surface water sample DS-1, which further demonstrates that Appendix I VOC affected groundwater remains on-site. Quality Control Analytical Results The equipment blank indicated the presence of 2.1 ug/l methylene chloride, which appears to be due to laboratory contamination. 5.2 Groundwater and Leachate Analytical Results – Unit I Phase 1 & 2 Lined MSW Landfill The second semi-annual 2022 groundwater analytical results for Unit I Phase 1 & 2 lined MSW landfill monitor wells MW-15 and MW-16 are provided in Appendix B. Leachate analytical results for LEACHATE-UNIT I (E) and LEACHATE-UNIT I (W) are provided in Appendix C. MW-15 & MW-16 Groundwater samples collected during the second semi-annual 2022 monitoring event at Unit I Phase 1 lined MSW landfill monitor wells MW-15 and MW-16 indicated the presence of target Appendix I or Appendix II constituents above NCGPSs, which are summarized below. Full Appendix II analysis was conducted at monitor wells MW-15 and MW-16. Groundwater sample MW-15 indicated the presence of 1.3 ug/l benzene 1.9 ug/l 1.2-dichloroethane and 0.16 beta-BHC. Groundwater sample MW-16 indicated the presence of 15 ug/l arsenic and 7.5 ug/l cobalt. Leachate Leachate sample LEACHATE-UNIT I (E) indicated the presence of 63J ug/l acetone, 5.3 ug/l benzene, 110 ug/l 2-butanone, 3.5 ug/l 1,4-dichlorobenzene, 0.42J ug/l 1,1-dichloroethane, 11 ug/l 1,2-dichloroethane, 4.2 ug/l Page | 23 cis-1,2-dichloroethene, 0.68J ug/l trans-1,2-dichloroethene, 0.75J ug/l 1,2-dichloropropane, 8.8 ug/l ethylbenzene, 16 ug/l 4-methyl-2-pentanone, 2 ug/l methylene chloride, 2.3 ug/l styrene, 0.57J ug/l tetrachloroethene, 42 ug/l toluene, 0.48J ug/l trichloroethene, 1.2 ug/l vinyl chloride, 36 ug/l xylenes, 4.4 ug/l 1,4-dioxane (SIM), 2.9J ug/l antimony, 37 ug/l arsenic, 1,900 ug/l barium, 0.79J ug/l beryllium, 52 ug/l chromium, 37 ug/l cobalt, 28 ug/l copper, 23 ug/l lead, 120 ug/l nickel, 13J ug/l selenium, 85 ug/l vanadium, 97 ug/l zinc, 0.28JQ ug/l beta-BHC, 3,400 ug/l nitrate, 120,000 ug/l BOD, 800,000 ug/l COD and 45,000 ug/l sulfate. A Q-flag indicates surrogate failure, therefore, the results are estimated. Leachate sample LEACHATE-UNIT I (W) indicated the presence of 540 ug/l acetone, 5.6 ug/l benzene, 950 ug/l 2-butanone, 0.61J ug/l carbon disulfide, 8.1 ug/l 1,4-dichlorobenzene, 3.1 ug/l 1,2-dichloroethane, 2.4 ug/l cis-1,2-dichloroethene, 19 ug/l ethylbenzene, 42 ug/l 4-methyl-2-pentanone, 1.2 ug/l methylene chloride, 2.9 ug/l styrene, 0.85J ug/l tetrachloroethene, 49 ug/l toluene, 0.58J ug/l trichloroethene, 1.2 ug/l vinyl chloride, 57 ug/l xylenes, 120 ug/l 1,4-dioxane (SIM), 35 ug/l antimony, 100 ug/l arsenic, 4,200 ug/l barium, 33 ug/l chromium, 17J ug/l cobalt, 16J ug/l copper, 6.4 ug/l lead, 86 ug/l nickel, 10J ug/l selenium, 130 ug/l vanadium, 140 ug/l zinc, 190 ug/l nitrate, 97,000H ug/l BOD, 760,000 ug/l COD, 73 ug/l orthophosphate and 16,000 ug/l sulfate. An H-flag indicates that the sample was analyzed outside the EPA method holding time. The source of VOC and pesticide affected groundwater detected above the NCGPSs at monitor well MW-15 during this and historical sampling appears to be predominately from the Unit I Phase 1 lined MSW landfill, based on similar signature constituents found both in groundwater and leachate samples at the Unit I lined MSW landfill, which include: 1,2-dichloroethane (which is only found above NCGPSs in Unit I groundwater samples and its leachate samples) and similar beta-BHC (pesticide) concentrations. Page | 24 6.0 STATISTICAL EVALUATION OF HISTORICAL GROUNDWATER DATA A statistical evaluation was conducted to determine if Appendix I groundwater constituents (VOCs, 1,4-dioxane and metals) historically detected at downgradient compliance monitor wells MW-2, MW-6, MW-7, MW-8, MW-9, MW-10/MW-10A (pooled together) and MW-19 indicated a significant increase above groundwater constituents historically detected at upgradient background well MW-1. Historical groundwater analytical results which were utilized for the statistical evaluation at these monitor wells are presented in Tables 6a through 6i. J-flagged groundwater constituents were not statistically evaluated during the assessment, since the data is estimated. However, B (detected in method blank), P (suspect data) and Q (suspect data)-flagged groundwater data were utilized in the statistics. The following sections outline the methods and results of the statistical groundwater evaluation. 6.1 Statistical Groundwater Evaluation Methods The statistical groundwater evaluation was conducted using computer software entitled A Ground Water Information Tracking System with Statistical Analysis Capability, GRITS/STAT v4.2 dated November 1992. The GRITS/STAT program was developed by the U.S. Environmental Protection Agency (EPA) for the statistical evaluation of groundwater quality data at RCRA, CERCLA and other regulated facilities. In order to determine the most appropriate statistical method to evaluate the groundwater data, a Shipiro-Wilk Test was first conducted to determine the normality of the data. The groundwater data primarily showed evidence of having a non-normal distribution. Based on the distribution and percentage of detected target constituents at the site, the Kruskal-Wallis Test was selected to evaluate the historical groundwater data. Summaries of these selected methods are outlined below. Kruskal-Wallis Test (Nonparametric Analyses of Variance) The Kruskal Wallis Test is a nonparametric analyses of variance (ANOVA), which is utilized to test the hypothesis that all background and compliance wells possess the same median concentration of a groundwater constituent. If the hypothesis of equal medians is rejected, then GRITS/STAT performs additional calculations to determine which compliance wells indicate statistical evidence of groundwater contamination. The Kruskal-Wallis Test is recommended to be conducted on groundwater data which is non-normally distributed and possess a percentage of non-detects of less than 50. This method requires a minimum of two compliance wells and one background well, and a minimum of four sampling events. 6.2 Statistical Groundwater Evaluation Results The results of the statistical groundwater evaluation utilizing the Kruskal-Wallis Test are presented in Table 7. The supporting statistical evaluation data is kept on-file with Buxton Environmental, Inc. A summary of the results of the statistical evaluation activities at each compliance well is provided below. Monitor Well MW-2 The Kruskal-Wallis Test indicated that groundwater samples historically collected at monitor well MW-2 contained only Appendix I constituents including benzene, chloroethane, 1,4-dichlorobenzene, 1,1- dichloroethane, cis-1,2-dichloroethene, methylene chloride, tetrachloroethene, trichloroethene, xylenes, barium, Page | 25 cobalt, nickel and zinc at levels statistically above background concentrations at MW-1. Monitor Well MW-6 The Kruskal-Wallis Test indicated that groundwater samples historically collected at monitor well MW-6 did not indicate statistically significant concentrations of target Appendix I/II constituents above background levels at MW-1. Monitor Well MW-7 The Kruskal-Wallis Test indicated that groundwater samples historically collected at monitor well MW-7 contained only Appendix I constituents including benzene, chlorobenzene, chloroethane, 1,1-dichloroethane, 1,4-dichlorobenzene, 1,4-dioxane, vinyl chloride, barium, cadmium, copper and zinc at levels statistically above background concentrations at MW-1. Monitor Well MW-8 The Kruskal-Wallis Test indicated that groundwater samples historically collected at monitor well MW-8 contained only Appendix I constituents including 1,1-dichloroethane, cis-1,2-dichloroethene, barium and lead at levels statistically above background concentrations at MW-1. Monitor Well MW-9 The Kruskal-Wallis Test indicated that groundwater samples historically collected at monitor well MW-9 contained only Appendix I constituents including benzene, chloroethane, 1,1-dichloroethane, cis-1,2- dichloroethene, methylene chloride, tetrachloroethene, trichloroethene, xylenes, barium and cobalt at levels statistically above background concentrations at MW-1. Monitor Well MW-10/MW-10A The Kruskal-Wallis Test indicated that groundwater samples historically collected at monitor wells MW- 10/MW-10A contained only Appendix I constituents including benzene, 1,4-dichlorobenzene, 1,1- dichloroethane, cis-1,2-dichloroethene, tetrachloroethene, trichloroethene, xylenes, barium, cobalt and zinc at levels statistically above background concentrations at MW-1. Monitor Well MW-19 The Kruskal-Wallis Test indicated that groundwater samples historically collected at monitor well MW-19 did not indicate statistically significant concentrations of target Appendix I/II constituents above background levels at MW-1. Page | 26 7.0 CONCLUSIONS From December 29 to 31, 2022, Buxton Environmental, Inc. conducted the second semi-annual 2022 Appendix I/II groundwater and surface water Detection Monitoring and Assessment Monitoring activities conducted at the Gaston County closed unlined municipal solid waste (MSW) landfill - Hardin site (Permit No.: 3606) located at 3155 Philadelphia Church Road in Dallas, North Carolina. An inactive construction and demolition (C&D) landfill, which stopped receiving waste in April 2023, is located on-top of the closed unlined MSW landfill. Full Appendix II sampling conducted at downgradient Unit I Phase I & 2 compliance wells MW-15 and MW- 16 was also evaluated, in order to continue Assessment Monitoring requirements and determine the source/sources of both Appendix I and II constituents exceedances historically detected in the area between the east side of the Unit I Phase 1 MSW landfill and the drainage swale. In addition, pesticide contaminants-of- concern (CoCs) aldrin and beta BHC were also analyzed at Unit I Phase I & 2 lined MSW landfill leachate samples LEACHATE-UNIT I (E) and LEACHATE-UNIT I (W) for the second consecutive event as part of the above mentioned Assessment Monitoring investigation. The purpose for conducting the assessment was to monitor groundwater and surface water quality, and determine hydrogeologic conditions at the closed unlined landfill. A summary of the findings is provided below. • On October 26, 2022, Mr. Ervin Lane with the NCSWS approved our request to abandon seven monitor wells located within the footprint of the Unit III lined MSW landfill expansion area including Unit I Phase 1 & 2 MSW landfill wells MW-32, MW-33, MW-34 and MW-35 (also closed unlined MSW landfill dual purpose well) located on the west side of the drainage swale; and Unit II Phase 1 & 2 landfill wells MW-28, MW-29 and MW-30 located on the east side of the drainage swale. These activities were necessary in order to commence with timber clearing and construction of the Unit III French drain located along the upper portion of the on-site drainage swale. • On March 13, 2023, the NCSWS issued a memorandum requiring per- and polyfluoroalkyl substances (PFAS) analyses during groundwater, surface water and leachate monitoring conducted after July 1, 2023 at all landfills regulated under 15A NCAC 13B Rules: 0601 and .0602 (all other landfills not regulated under .0531-0546 and .1600 rules); .0544 and .0545 (C&D landfills); and .1623, and .1630 - .1637 (Subtitle D lined MSW landfills). According to the memo, PFAS include a group of manufactured compounds used in aerospace, automotive, textiles, electronics, food packaging, stain- repellent products, non-stick products and firefighting foams that do not breakdown in the environment and bioaccumulate in humans and animals through soil and drinking water and are linked to adverse health effects. On July 20, 2023, Mr. Perry Sugg (NCSWS - Environmental Compliance Branch Head), clarified that PFAS monitoring was also required at old closed MSW landfills that fall under old NCSWS Rule .0500 that defaults to North Carolina 2L groundwater monitoring rules. Water samples should be analyzed by EPA (Draft) Method 1633 (PFAS) by a Department of Defense (DOD) accredited laboratory. • On July 17, 2023, the NCSWS issued a memorandum clarifying PFAS monitoring requirements at solid waste sanitary landfills. The letter addresses landfill types that should comply; monitoring frequency (minimum of two (2) consecutive sample events, after which the data will be evaluated for future continued monitoring requirements); sampling methodology (including sampling practices and precautions to avoid equipment cross-contamination); analytical method and laboratories (EPA (Draft) Method 1633 for up to 40 PFAS compounds by a DOD accredited laboratory); monitoring locations (groundwater wells, surface water locations, underdrains (French drains) and leachate); and reporting (routine report preparation and submittal, along with electronic deliverable data (EDD) requirements in the EQUIS format). Page | 27 • The methane detected at Unit I MSW landfill monitor wells monitor wells MW-15 (June and September 2021) and MW-16 (December 2021, March 2022, September 2022 and December 2022) appears to be from the Unit I Phase 1 lined MSW landfill, due to the absence of methane at closed unlined MSW landfill monitor well MW-10A (nearest alternate methane source area) and dual purpose monitor well MW-35, along with evidence that fingerprint VOC CoC affected groundwater historically detected at monitor wells MW-15, MW-16 and MW-35 and leachate samples have been found to be solely attributable to the Unit I Phase 1 landfill (as discussed above and below). Additional landfill gas assessment will be required in this area of the site. • During the groundwater sampling activities, Buxton Environmental, Inc. conducted a routine up-keep and maintenance inspection at on-site monitor wells, in order to comply with the March 23, 2017 memorandum from the NCSWS. The monitor wells were locked, appeared to be in good condition, and in compliance with NCSWS standards. • The predominate shallow groundwater flow direction in the area of the closed unlined MSW landfill is to the west southwest, southwest and south southwest toward on-site tributaries and ultimately the South Fork Catawba River. Shallow groundwater flow on the northeast corner of the site across Philadelphia Church Road is to the southeast toward Hoyle Creek. The horizontal hydraulic gradient observed across the closed unlined MSW landfill between shallow monitor wells MW-2 and MW-9 is 0.034 feet per feet (ft/ft). The average linear groundwater velocity for the shallow aquifer ranged from 0.01 ft/day (3.65 ft/year) at monitor well MW-8 to 0.29 ft/day (105.85 ft/year) at monitor well MW-7. • Groundwater samples MW-2 and MW-10A indicated Appendix I constituents above NCGPSs. Groundwater sample MW-2 indicated the presence of 11 ug/l cobalt above the NCGPS. Groundwater sample MW-10A indicated the presence of 1.8 ug/l tetrachloroethene above the NCGPS. The remaining groundwater samples collected at monitor wells MW-1, MW-6, MW-7, MW-8, MW-9 and MW-19 did not indicated target Appendix I constituents above NCGPSs. • None of the groundwater samples collected at the closed unlined MSW landfill indicated the presence of 1,4-dioxane (SIM or non-SIM) above the MDL. The presence of 1,4-dioxane (non-SIM or SIM) above the MDL is criteria for continued 1,4-dioxane (SIM) analysis at compliance monitor wells based on NCSWS guidance. • No first-time exceedances of target Appendix I constituents were detected above NCGPSs during the second semi-annual 2022 sampling event, therefore, a 14-Day Notification of Groundwater Protection Standards Exceedance form is not required to be submitted to the NCSWS. • Surface water samples US-1 and DS-1 did not indicate the presence of target Appendix I VOCs, 1,4- dioxane (SIM or non-SIM) or metal constituents above the lowest of established NCSWWSs. In addition, surface water samples US-1 and DS-1 did not indicate the presence of 1,4-dioxane (SIM or non-SIM) above the MDL. • According to historical and the second semi-annual 2022 surface water analytical results, target Appendix I VOCs (including 1,4-dioxane) have not been detected above established NCSWWSs or NCGPSs in upstream sample US-1 or downstream sample DS-1 (exit downstream surface water sample located at the confluence of all on-site landfill tributaries on the southeast property boundary). These surface water samples have infrequently indicated Appendix I metals above NCSWWSs or NCGPSs, however, appear to be the result of turbidity or natural conditions. Based on these results, Appendix I constituent affected groundwater associated with all Gaston County – Hardin Site landfills have not impacted surface water quality above established NCSWWSs or NCGPSs at exit downstream surface Page | 28 water sample DS-1, which further demonstrates that Appendix I VOC affected groundwater remains on- site. • Groundwater samples collected during the second semi-annual 2022 monitoring event at Unit I Phase 1 lined MSW landfill monitor wells MW-15 and MW-16 indicated the presence of target Appendix I or Appendix II constituents above NCGPSs, which are summarized below. Full Appendix II analysis was conducted at monitor wells MW-15 and MW-16. Groundwater sample MW-15 indicated the presence of 1.3 ug/l benzene 1.9 ug/l 1.2-dichloroethane and 0.16 beta-BHC. Groundwater sample MW-16 indicated the presence of 15 ug/l arsenic and 7.5 ug/l cobalt. • Unit I Phase I and Phase 2 lined MSW landfill leachate samples LEACHATE-UNIT I (E) and LEACHATE-UNIT I (W) indicated numerous Appendix I VOCs (including 1,4-dioxane (SIM)) and metals, and additional inorganic constituents. In addition, LEACHATE-UNIT I (E) indicated 0.28JQ ug/l beta-BHC (pesticide). • The source of VOC and pesticide affected groundwater detected above the NCGPSs at monitor well MW-15 during this and historical sampling appears to be predominately from the Unit I Phase 1 lined MSW landfill, based on similar signature constituents found both in groundwater and leachate samples at the Unit I lined MSW landfill, which include: 1,2-dichloroethane (which is only found above NCGPSs in Unit I groundwater samples and its leachate samples) and similar beta-BHC (pesticide) concentrations. • The Kruskal-Wallis Test indicated that groundwater samples historically collected at monitor well MW- 2 contained benzene, chloroethane, 1,4-dichlorobenzene, 1,1-dichloroethane, cis-1,2-dichloroethene, methylene chloride, tetrachloroethene, trichloroethene, xylenes, barium, cobalt, nickel and zinc; monitor well MW-7 contained benzene, chlorobenzene, chloroethane, 1,1-dichloroethane, 1,4-dichlorobenzene, 1,4-dioxane, vinyl chloride, barium, cadmium, copper and zinc; monitor well MW-8 contained 1,1- dichloroethane, cis-1,2-dichloroethene, barium and lead; monitor well MW-9 contained benzene, chloroethane, 1,1-dichloroethane, cis-1,2-dichloroethene, methylene chloride, tetrachloroethene, trichloroethene, xylenes, barium and cobalt; monitor wells MW-10/MW-10A contained benzene, 1,4- dichlorobenzene, 1,1-dichloroethane, cis-1,2-dichloroethene, tetrachloroethene, trichloroethene, xylenes, barium, cobalt and zinc; and monitor well MW-35 contained benzene, 1,4-dichlorobenzene, cis-1,2- dichloroethane, 1,2-dichloroethane, methylene chloride, tetrachloroethene, trichloroethene and xylenes at levels statistically above background concentrations at MW-1. The Kruskal-Wallis Test indicated that groundwater samples historically collected at monitor wells MW-6 and MW-19 did not indicate statistically significant concentrations of target Appendix I/II constituents above background levels at MW-1. • The landfill gas extraction system located at the site appears to continue to assist with the reduction of VOC affected groundwater historically detected at immediately adjacent monitor wells. Page | 29 8.0 RECOMMENDATIONS Based on the findings of this assessment, Buxton Environmental, Inc. makes the following recommendations. • Semi-annual Detection Monitoring (Appendix I), Assessment Monitoring (Appendix II), and/or MNA groundwater and surface water sampling should continue to be conducted at the Gaston County closed unlined MSW landfill, in general accordance with NCSWS rules and memorandums, prior recommendations made by Buxton Environmental, Inc. and discussions with the NCSWS. In addition, all groundwater and surface water samples will be analyzed for PFAS by EPA Method 1633, as required by the NCSWS. The first semi-annual 2023 monitoring event will be conducted in September 2023. • Future groundwater sampling at the site should be conducted with non-metallic down-hole sampling devices, in order to remove the possibility for field introduced metals contamination. • A copy of this report should be forwarded to the NCSWS for their review. rk:report:gstnunappi.1222 Page | 30 9.0 REFERENCES Buxton Environmental, Inc., Statistical Groundwater Assessment, Gaston County Unlined Subtitle D Landfill - Hardin Site, October 26, 1998. Buxton Environmental, Inc., Groundwater Delineation & Assessment of Corrective Measures, June 30, 2008 Fetter, C.W., 1988, Applied Hydrogeology, Second Edition. GRITS/STAT v4.2, November 1992, A Ground Water Information Tracking System with Statistical Analysis Capability. GC Environmental, Inc., Richard Prosser, P.E. and Daniel Waineo, E.I.T., Proposed Solutions to Landfill Gas Contamination of Groundwater, 1999. FIGURES TABLES Well ID Latitude Longitude Drilling Install TD TD Screen Screen Sand Bentonite Grout Ground TOC DTW DTW (degrees)(degrees)Company Date BTOC BGS Length Depth BGS BGS BGS BGS Elevation Elevation BTOC Elevation (ft)(ft)(ft)(ft)(ft)(ft)(ft)(ft)(ft)(ft)(ft) MW-1 35.383615 -81.170086 Law Eng.1-6-87 64.7 62 20 42-62 40-62 38-40 0-38 801.48 803.48 57.80 745.68 MW-2 35.390922 -81.173669 Law Eng.10-28-86 60.2 58 20 38-58 36-58 34-36 0-34 813.88 816.58 56.62 759.96 MW-6 35.385771 -81.180987 ----18.00 16.5 10 6-16.5 4-16.5 2-4 0-2 670.88 673.38 6.82 666.56 MW-7 35.389066 -81.177137 ----15.50 13.5 10 3-13.5 3-13.5 2-3 0-2 706.73 708.33 5.70 702.63 MW-8 35.387362 -81.178460 Geo. Expl.9-29-94 17.50 15 10 5-15 4-15 2-4 0-2 693.40 695.90 10.65 685.25 MW-9 35.385830 -81.179346 Geo. Expl.9-29-94 22.50 20 15 5-20 4-20 2-4 0-2 691.38 695.96 18.55 677.41 MW-10A 35.384754 -81.177387 SAEDACCO 12-19-11 42.50 40 15 25-40 23-40 21-23 0-21 719.65 722.15 36.53 685.62 MW-19 35.391267 -81.173294 SAEDACCO 9-21-99 66.87 65 10 55-65 53-65 51-53 0-51 802.33 804.20 40.31 763.89 MW-22 35.390158 -81.171933 SAEDACCO 4-16-08 35.00 32 15 17-32 15-32 13-15 0-13 757.83 759.92 16.41 743.51 MW-35 35.383881 -81.174794 IET 12-2-20 33.36 30 15 15-30 13-30 3-13 0-3 701.60 704.96 ---- Notes: Depth to water measurements obtained from December 29-31, 2022 to the nearest 0.01 foot with a depth to water meter. TD=total depth;BTOC=below top of casing;TOC=top of casing;DTW=depth to water;ft=feet Latitude and longitude determined from HDR base maps for the subject site. "--" = no data; abd. = abandoned The top-of-casing elevation at MW-9 was re-survey by BEI on July 22, 2020, following a repair to the wellhead. MW-21 abandoned on August 13, 2020, and replaced with dual purpose monitor well MW-35 installed on December 2, 2020. Monitor well MW-35 were approved to be abandoned by the NCSWS on October 26, 2022, therfore, were not monitored. The abandonment by overdrilling was conducted from November 14, 2022 to January 13, 2023 prior to construction of Unit III MSW landfill. DALLAS, NORTH CAROLINA TABLE 1 GROUNDWATER GAUGING DATA SECOND SEMI-ANNUAL 2022 GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD TABLE 2 FIELD PARAMETER DATA SECOND SEMI-ANNUAL 2022 GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA Sample ID Sample pH Conductivity Temperature Method (SU)(uS/cm)(Celsius) MW-1 bailer 5.95 190 16.8 MW-2 bailer 5.55 110 16.3 MW-6 bailer 5.17 70 14.9 MW-7 bailer 5.94 270 14.0 MW-8 bailer 4.72 70 15.1 MW-9 bailer 4.92 50 15.8 MW-10A bailer 5.73 190 15.1 MW-19 bailer 5.83 60 15.8 US-1 grab 6.30 110 6.3DS-1 grab 5.75 120 10.5 Field parameters collected December 29-31, 2022 by Buxton Environmental, Inc. utilizing a calibrated HANNA Instuments-GroLine meter. Field parameters at monitor wells collected after purging a minimum of 3 well volumes of water or until dryness with a Teflon bailer and nylon string. Leachate and surface water field parameters collected immediately prior to sampling. SU = standard units uS/cm = microsiemens per centimeter NTU = nephelometric turbidity units "--" = not tested TABLE 3 HYDROGEOLOGIC DATA SECOND SEMI-ANNUAL 2022 GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA Well ID Lithologic Groundwater Hydraulic Hydraulic Average Hydraulic Gradient Average Linear Average Linear Unit Flow Conductivity Conductivity Effective Porosity (feet/feet)Groundwater Velocity Groundwater Velocity Screened Direction (cm/sec)(ft/day) (unitless)(feet/day)(feet/year) MW-1 Saprolite/PWR/Bedrock S 87o W 2.39 x 10-4 0.68 0.23 0.044 0.13 47.45 MW-2 Saprolite S 59o W 2.22 x 10-4 0.63 0.23*0.056 0.15 54.75 MW-6 Flood Plain S 53o W 5.29 x 10-5 0.15 0.23*0.026 0.02 7.30 MW-7 Flood Plain S 74o W 3.81 x 10-4 1.08 0.23*0.061 0.29 105.85 MW-8 Saprolite S 75o W 2.29 x 10-5 0.07 0.23*0.040 0.01 3.65 MW-9 Saprolite S 50o W 5.78 x 10-4 1.64 0.23*0.024 0.17 62.05 MW-10A Saprolite S 60o W 3.32 x 10-4 0.94 0.23*0.025 0.10 63.50 MW-19 Saprolite/PWR S 44o E 3.51 x 10-4 0.996 0.23*0.031 0.13 47.45 Notes: Hydraulic gradient and groundwater flow direction data obtained from the Second Semi-Annual 2022 groundwater flow direction map (Figure 3). Hydraulic conductivity values at MW-8, MW-9, MW-10 (MW-10A assumes hydraulic conductivity of MW-10) and MW-11 estimated by HDR, Inc., hydraulicconductivity values at MW-1, MW-2, MW-6 and MW-7 estimated by Resolve Environmental Services, P.A. and hydraulic conductivity values at MW-19 and MW-35 estimated by Buxton Environmental, Inc. See report text for average linear groundwater velocity equation. * = Groundwater seepage velocities assume an average 23% effective porosity, as determined for the saprolite and partially weathered bedrock (PWR) during Design Hydrogeologic investigation at adjacent lined landfill (Unit II Phase I). ** = effective porosity determined by averaging laboratory derived effective porosity values at PZI-1, PZI-3, PZI-4, PZI-5 and MW-32 located at the Unit I Phase 2 landfill expansion area. TABLE 4 APPENDIX II GROUNDWATER ANALYTICAL RESULTS SECOND SEMI-ANNUAL 2022 GASTON COUNTY CLOSED UNLINED LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA Sample ID LOQ MDL MW-1 MW-2 MW-6 MW-7 MW-8 MW-9 MW-10A MW-19 NCGPS Appendix I VOCs (EPA 8260D) 1,1-Dichloroethane 1 0.4 BDL 1.4 BDL BDL BDL BDL 1.3 BDL 6 cis-1,2-Dichloroethene 1 0.4 BDL 0.64J BDL BDL BDL BDL 4.5 BDL 70 1,4-Dioxane 50 13 BDL BDL BDL BDL BDL BDL BDL BDL 3 Tetrachloroethene 1 0.4 BDL BDL BDL BDL BDL BDL 1.8 BDL 0.7 Trichloroethene 1 0.4 BDL BDL BDL BDL BDL BDL 0.97J BDL 3 1,4-Dioxane (EPA 8260D SIM)3 1 BDL NT NT NT NT NT NT NT 3 Barium 5 1.3 12 120 61 110 71 58 250 33 700 Beryllium 0.4 0.15 BDL 0.17J BDL 0.16J 0.75 0.19J 0.67 BDL 4 Cadmium 0.5 0.13 BDL 0.6 0.34J 0.47J 0.33J 0.57 0.63 0.16J 2 Chromium 5 1.3 BDL BDL BDL BDL BDL BDL BDL 2J 10 Cobalt 5 1.3 BDL 11 BDL 2.9J BDL 1.4J BDL BDL 1 Copper 5 1.3 BDL BDL BDL 1.4J BDL 1.3J BDL BDL 1,000 Lead 1 0.25 BDL 0.28J 0.4J BDL 1.8 0.58J 0.37J BDL 15 Nickel 5 1.3 BDL 12 BDL 1.6J BDL BDL BDL BDL 100 Thallium 0.5 0.15 BDL 0.85 BDL BDL 0.22J 0.19J BDL BDL 2 Zinc 10 2.5 BDL 34 3J 7.9J 4.3J 4.2J 14 2.5J 1,000 Notes: Groundwater samples were collected December 29-31, 2022 by Buxton Environmental, Inc. and analyzed for above Appendix I VOCs (+1,4-dioxane (non-SIM) & metals. Analysis conducted by Pace Analytical Services, LLC (NC Certification No.: 329).VOCs = volatile organic compounds; DCA = dichloroethane; DCE = dichloroethene; VC = vinyl chloride; As = arsenic; Ba = barium; Be = beryllium; Cr = chromium; Cu = copper; Co = Cobalt; Pb = lead; Ni = nickel; Tl = Thallium; V = vanadium; Zn = zinc; PCBs = polychlorinated biphenylsNCGPS=North Carolina Groundwater Protection Standard (April 11, 2022) BDL = Below Detection Limit Bold and shade denotes above established NCGPS (J-flagged data not considered)LOQ = limit of quantitation (aka: report limit (RL) or practical quantitation limit (PQL)) is the lowest quantitation limit attainable by the EPA method MDL = method detection limit is the lowest qualified limit (estimated result) attainable by the EPA method data presented in micrograms per liter (ug/l)B = detected in method blank; P = the relative percent difference (RPD) between two gas chromatograph (GC) colums exceeds 40%, results are estimated J = estimated result <LOQ or PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards (primary standard used to establish NCGPS's) dated April 1, 2022, J-flagged groundwater data exceeding the standard does not constitute an exceedance). Appendix I Metals (EPA 6020B) Sample ID EPA 8260D (SIM) Appendix I Metals (EPA 6020B) Acetone 1,4-Dioxane 1,4-Dioxane Ba Cu Pb LOQ 20 50 3 5 5 1 MDL 2 13 1 1.3 1.3 0.25 Surface Water US-1 5JL BDL BDL 33 1.5J BDL DS-1 BDL BDL BDL 37 BDL 0.44J NCSWWS 3,100(NCTSW)0.35(NCTSW)0.35(NCTSW)1,000(NC2BRB)1,300(EPAWQC)25(NC2BRB) Notes: Surface water samples were collected on December 29 amd 30, 2022 and were analyzed for Appendix I volatile organic compounds (VOCs) (plus 1,4-dioxane) by EPA Method 8260D; 1,4-Dioxane by EPA Method 8260D (select ion monitoring (SIM)); and Appendix I metals by EPA 6020B. Analyses by Shealy Environmental Services, Inc. (NC Certification No.: 329) in W. Columbia, SC. Surface water samples were grab samples. Ba = barium; Be = beryllium; Cr = chromium; Cu = copper; Ni = nickel; Pb = lead; V = vanadium; Zn = zinc NCSWWS = lowest of: established North Carolina Surface Water and Wetland Standards (15A NCAC 02B) (Redbook, May 1, 2007)(NC2BRB); North Carolina 15A NCAC 02B Water Quality Standards for Surface Water (June 10, 2019) (NC2B); or North Carolina In-Steam Target Values for Surface Water (NCTSW) for South Fork of Catawba River (Class WS-IV Water); or EPA National Recommended Water Quality Criteria for Aquatic Life and Human Health (EPAWQC). Criteria. BDL = Below Detection Limit; NA = not applicable Bold and shade denotes above established NCSWWS (J-flagged data not considered) LOQ = limit of quantitation (aka: report limit (RL) or practical quantitation limit (PQL)) is the lowest quantitation limit attainable by the EPA method MDL = method detection limit is the lowest qualified limit (estimated result) attainable by the EPA method data presented in micrograms per liter (ug/l) B = detected in method blank J = estimated result <LOQ or PQL and >=MDL Appendix I VOCs (EPA 8260D) TABLE 5 APPENDIX I SURFACE WATER ANALYTICAL RESULTS SECOND SEMI-ANNUAL 2022 GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA Constituent Sampling Dates NC (ug/1)11/93 2/94 5/94 11/94 5/95 9/95 3/96 9/96 3/97 9/97 4/98 6/98 7/98 7/98 8/98 9/98 3/99 10/99 5/99 9/99 3/00 5/00 12/00 4/01 10/01 3/02 4/02 10/02 4/03 10/03 4/04 10/04 4/05 11/05 5/06 11/06 5/07 11/07 GPS Acetone BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6,000CBBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDL50 CD BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700 CM BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 1,4-DCB BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 61,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT 3AntimonyBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDL.25BJ 1ArsenicBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDL10BariumBDLBDL100BDL129209.5 BDL 315 320 260 200 26 BDL BDL BDL 130 BDL BDL 92 BDL BDL 25 86 BDL 44 46 66 46 40 79 37 170 66 160 100 62 9.6 13 700 Beryllium BDL BDL BDL BDL BDL BDL BDL BDL 2 4 2 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 3.3B BDL BDL .045BJ 4 Cadmium BDL BDL BDL BDL BDL 0.32 BDL BDL 1 BDL BDL BDL BDL BDL 4 BDL BDL BDL BDL 3 4 BDL BDL BDL BDL 1.2 BDL 1.2 BDL BDL BDL BDL BDL BDL BDL 3.3 0.26 0.33 2 Cobalt BDL BDL 160 BDL BDL BDL BDL BDL 6 15 15 BDL 12 BDL 11 BDL BDL BDL BDL BDL 10 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.11J .27BJ 1CopperBDLBDLBDLBDL2644.3 BDL 46.0 25 55 42 3.0 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 14 BDL BDL BDL BDL BDL BDL 17 11 33 BDL 28 16 11 0.46J 1.4B 1,000ChromiumBDLBDLBDLBDL1829.9 BDL 38.1 10 27 46 3 21 BDL 18 13 BDL BDL BDL 12 15 BDL 9 BDL BDL 6.5 7 6.5 BDL BDL BDL 15 BDL 18 12 5.2 0.8J 1.1J 10LeadBDLBDLBDLBDLBDL23BDL25.9 18 32 26 BDL 15 BDL 12 17 16 BDL BDL 11 18 BDL 7 BDL BDL BDL 5 BDL BDL 5.2 BDL 18 BDL 18 10 BDL 0.18J .079J 15 Mercury*NT NT NT NT BDL NT NT NT BDL NT BDL NT NT BDL NT 0.58 NT BDL BDL NT NT BDL BDL BDL BDL NT BDL NT NT BDL NT NT NT BDL NT NT NT BDL 1 Nickel BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.3J 0.42J 100 Selenium BDL BDL BDL BDL BDL BDL BDL 7.32 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20SilverBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDL0.078J.16BJ 20ThalliumBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDL13BDLBDL15BDLBDLBDL2VanadiumBDLBDLBDLBDL59.6 88.1 BDL 120 80 31 180 BDL 65 BDL 55 BDL 40 BDL BDL BDL 52 BDL 35 BDL BDL 17 27 17 BDL BDL 12 71 14 67 43 26 BDL BDL 7 Zinc 10 30 20 30 128 137.6 BDL 209 100 20 170 21 110 BDL 91 BDL BDL BDL 130 89 100 BDL 43 BDL 25 30 36 30 BDL 42 38 92 28 100 59 40 7.2BJ 7.8J 1,000 bis (2-E) P*NT NT NT NT BDL NT NT NT BDL NT BDL NT NT NT NT NT NT NT BDL NT NT BDL NT BDL NT NT NT NT NT BDL NT NT NT BDL NT NT NT 1.1BJ 3 DEP*NT NT NT NT BDL NT NT NT BDL NT BDL NT NT NT NT NT NT NT BDL NT NT BDL NT BDL NT NT NT NT NT BDL NT NT NT BDL NT NT NT BDL 6,000Di-n-Butyl P*NT NT NT NT BDL NT NT NT BDL NT BDL NT NT NT NT NT NT NT BDL NT NT BDL NT BDL NT NT NT NT NT 5.5 NT NT NT BDL NT NT NT 1.3J 700Endosulfan II*NT NT NT NT BDL NT NT NT BDL NT BDL NT NT NT NT NT NT NT BDL NT NT BDL NT BDL NT NT NT NT NT BDL NT NT NT BDL NT NT NT BDL 42EA*NT NT NT NT BDL NT NT NT BDL NT BDL NT NT NT NT NT NT NT BDL NT NT BDL NT BDL NT NT NT NT NT BDL NT NT NT BDL NT NT NT BDL 23&4 MP*NT NT NT NT BDL NT NT NT BDL NT BDL NT NT NT NT NT NT NT BDL NT NT BDL NT BDL NT NT NT NT NT BDL NT NT NT BDL NT NT NT BDL 40 Aldrin*NT NT NT NT BDL NT NT NT BDL NT BDL NT NT NT NT NT NT NT BDL NT NT BDL NT BDL NT NT NT NT NT BDL NT NT NT BDL NT NT NT BDL 0.002 beta-BHC*NT NT NT NT BDL NT NT NT BDL NT BDL NT NT NT NT NT NT NT BDL NT NT BDL NT BDL NT NT NT NT NT BDL NT NT NT BDL NT NT NT BDL 0.02 Sulfide *NT NT NT NT BDL NT NT NT BDL NT 1,000 NT NT NT NT NT NT NT BDL NT NT BDL NT BDL NT NT NT NT NT 1,800 NT NT NT BDL NT NT NT 1,300 NS Constituent NC(ug/1)6/08 11/08 12/08 2/09 3/09 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 2/17 2/17 2/17 3/17 7/17 12/17 2/18 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 12/22 GPS Acetone BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6.9BJ BDL BDL BDL BDL BDL 2.4J BDL BDL BDL BDL BDL BDL NT 2.2J BDL 2.4J BDL BDL BDL BDL BDL BDL BDL 6,000CBBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDL0.2J BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 50CDBDLBDLBDL0.33J BDL BDL 0.4BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700CMBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDL0.71J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 1,4-DCB BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.36J BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6 1,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 Antimony 0.39J .82BJ 1.4 1.7 .49J BDL 1.6 0.41J 1.9 BDL 0.22J BDL BDL 0.17J BDL BDL 0.14J 0.19J BDL 0.18J 0.44J .51BJ .35BJ 0.85J 1J BDL 1.1J 0.51J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Arsenic 0.34J BDL BDL BDL .56BJ 0.36J 0.3J BDL 0.27J BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.35J 0.36J BDL .35J 0.5J BDL BDL BDL BDL BDL BDL 1.2 BDL BDL 2 BDL BDL BDL BDL BDL 10Barium18B1113B2217B274114359.3 7.8 13 16 27B 9.6 14 14B 21 13 21 18 19 19 30 21 14 41 240 14 15 17 13 61 36 33 37 11 12 700Beryllium0.11BJ .069J 0.04BJ 0.17J .042J 0.15J 0.31J .032J 0.2J BDL BDL 0.061J BDL 0.19J BDL BDL BDL BDL BDL BDL BDL 0.13J BDL 0.22J BDL BDL 0.29J 2.3 BDL BDL BDL BDL 0.27J BDL BDL BDL BDL BDL 4Cadmium0.34 0.26 1.9 0.34 0.16 0.21 0.56 0.29 1.30 .073J 0.17 0.092J 0.16 1.50 0.23 .092J 0.45 0.62 0.38 0.36 0.42 0.16 0.14 BDL BDL BDL 0.53 1.6 0.35J 0.65J BDL BDL 0.49J BDL 0.34J 0.88 0.22J BDL 2 Cobalt 0.18BJ 0.16J 0.16BJ0.91BJ .35BJ 1.1J 1.8J 0.12J 2.5J .068J .083J 0.41J .097J 1.2J 0.16J 0.1J 0.073J 1.2J 1.9J 0.9J 0.85J 0.75J 0.96J 2.4J 2.9J BDL 4.7J 27 BDL 3.6 BDL BDL 13 BDL 5.5 2.3J BDL BDL 1 Copper 0.74J 0.84J 1.6 3.8 1.6B 3.8 6 0.45BJ 6.9 BDL 0.57J 1.5 .87BJ 4B 1.2B .65BJ 1.5 3.1 1.3 1.4 1.4 1.5 1.8 4.7J 7.1 1.3J 11 48 2.1J 3.1J BDL BDL 5.8 BDL 3.8J 3.1J 3.1J BDL 1,000 Chromium 0.59J 0.38J 0.96J 0.52J BDL 1.8 3.5J 0.55J 4.1J 1.9BJ 0.36J 0.52J .48J 2J 0.54J BDL 0.84J 1.9J 0.72J 0.78J 2.6J 5.1 3.4J 47 180 7.5 39 88 1.8J 1 2.1J BDL 5.3 BDL BDL BDL BDL BDL 10Lead0.19BJ 0.3J 0.75J 1.6 0.69J 2.4 3.7 0.16J 3.5 0.07J 0.14J 1.2 0.25J 2.3B 0.11J 0.16J 0.32BJ 1.3 0.6J 0.76J 0.91J 1.1B 1.1 3.7 1.4 0.5J 5.2 34 0.67J 0.75J 0.4J BDL 3.4 0.54J 2.1 0.71J BDL BDL 15Mercury*0.1 NT NT NT NT NT BDL NT NT NT .06BJ NT NT NT BDL NT NT NT BDL NT NT NT NT NT NT NT BDL NT NT NT NT BDL NT NT NT BDL BDL NT 1Nickel0.32J 0.34J 0.45J 1.1J 0.41J 0.48J 1.8J BDL 2.8J BDL BDL 0.63J 0.48BJ 1.4J 0.51J BDL 0.47J 1.3J 0.81J 0.65J 2.9J 1.5J 1.2J 29 100 4.2J 19 38 2J 1.5J BDL BDL 2.4J BDL BDL BDL BDL BDL 100 Selenium 0.33J 0.26J BDL BDL BDL BDL 0.35J BDL BDL0.54BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.6J BDL BDL BDL BDL BDL BDL 20 Silver 0.33J 0.05J 0.94J 0.15J .085BJ .029J .35BJ .076J 0.03J BDL .054BJ .071J BDL .067J BDL .21BJ 0.012J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Thallium 0.11BJ BDL BDL BDL BDL BDL 0.13J BDL BDL BDL BDL BDL BDL .077J BDL BDL BDL BDL BDL BDL BDL .09BJ BDL BDL BDL BDL 0.13J 0.66 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2Vanadium2.7J 2.4J 2.7J 7.2 5.1B 10 15B 2.4J 14 1.9J 2.2J 3.6J BDL 4J BDL 2.9J 2BJ 5.3 3.4J 4.8BJ 6.2B 3.9J 4.1J 12 6.8 3.2J 18B 97 3.1J 3.8 BDL BDL 18 BDL 14 6.8 BDL BDL 7Zinc4.8J 4.8J 10 15 5.6BJ 14 23 1.9J 22 BDL 2.2BJ 10B 5.1BJ 17B 7.5J 7.3J 7.5J 10 6.8J 76B 8.1J 5BJ 5.9J 15 7.6J 3.6J 19 130 3.8J 6.4J 5.4BJ BDL 15 BDL 5.7J 5.9J BDL BDL 1,000bis (2-E) P*BDL NT NT NT NT NT NT NT NT NT BDL NT NT NT BDL NT NT NT 0.63J NT NT NT NT NT NT NT BDL NT NT NT NT BDL NT NT NT BDL BDL NT 3 DEP*BDL NT NT NT NT NT NT NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT NT NT NT NT 0.46J NT NT NT NT BDL NT NT NT BDL BDL NT 6,000 Di-n-Butyl P*BDL NT NT NT NT NT NT NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT NT NT NT NT BDL NT NT NT NT 0.69J NT NT NT BDL BDL NT 700 Endosulfan II*BDL NT NT NT NT NT NT NT NT NT .0028J NT NT NT BDL NT NT NT BDL NT NT NT NT NT NT NT BDL NT NT NT NT BDL NT NT NT BDL BDL NT 42EA*BDL NT NT NT NT NT NT NT NT NT .005JP NT NT NT BDL NT NT NT BDL NT NT NT NT NT NT NT BDL NT NT NT NT BDL NT NT NT BDL BDL NT 23&4 MP*BDL NT NT NT NT NT NT NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT NT NT NT NT BDL NT NT NT NT BDL NT NT NT BDL BDL NT 40Aldrin*BDL NT NT NT NT NT NT NT NT NT BDL NT NT NT BDL NT NT BDL BDL BDL NT NT NT NT NT BDL BDL NT BDL NT BDL BDL BDL NT BDL NT BDL NT 0.002beta-BHC*BDL NT NT NT NT NT NT NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT NT NT NT NT BDL NT BDL NT BDL BDL BDL NT BDL NT BDL NT 0.019 Sulfide *800J NT NT NT NT NT NT NT NT NT 9,100 NT NT NT BDL NT NT NT BDL NT NT NT NT NT NT BDL BDL NT BDL NT BDL BDL BDL NT BDL NT BDL NT NSNotes:Only historical groundwater constituents detected are presented.Reference associated groundwater monitoring report for analytical methods and detection limits. BDL = below detection limit; NT = not testedbis (2-E) P = bis (2-Ethylhexyl) Phthalate; CB = chlorobenzene; CD = carbon disulfide; CM = chloromethane; DCB = dichlorobenzene; DEP = diethylphthalate; EA = endrin aldehyde; MP = methylphenol; P = Phthalate* = denotes Appendix II constituent, remaining constituents are Appendix INCGPS = North Carolina Groundwater Protection Standard; NS = no standard; bold and shade denotes above established NCGPS; data presented in micrograms per liter (ug/l); B = detected in method blankJ = estimated result <PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards (primary standard used to establish NCGPS's) dated April 1, 2022, J-flagged groundwater data exceeding the standard does not constitute an exceedance. P = The RPD between two GC columns exceeds 40% (results suspect) Groundwater Appendix I metals results for MW-1-B (collected 2/21/18) were selected to represent/replace MW-1 background data (collected 12/27/17) the second semi-annual 2017 event. Sampling Dates PERMIT NO.: 36063155 PHILADELPHIA CHURCH ROADDALLAS, NORTH CAROLINA TABLE 6aHISTORICAL GROUNDWATER ANALYTICAL RESULTSMW-1GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE TABLE 6b (2 of 2)HISTORICAL GROUNDWATER ANALYTICAL RESULTSMW-2GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITEPERMIT NO.: 36063155 PHILADELPHIA CHURCH ROADDALLAS, NORTH CAROLINA Constituent Sampling Dates NC (ug/l)6/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 GPS Acetone BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.5J 5J 2.9J 2.6J 2.6J 4.5J BDL BDL BDL BDL BDL BDL 6,000 Benzene 4.3 2.1 NT 3.20 5.6 1.1 0.35J 0.59J 0.81J 0.15J 0.3J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1CDBDL0.1J NT 0.33BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700 CB BDL BDL NT BDL BDL BDL BDL BDL BDL BDL 0.64J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.59J BDL BDL BDL BDL BDL 50 CA 3.1 2.3 NT 1.8J BDL BDL BDL 1.6J 1.4J 1.2J 0.92J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.47J BDL BDL BDL BDL 3,000 1,4-DCB 0.59J 0.58J NT BDL BDL 2.7 1.9 1 0.89J 1.1 BDL 2.2 1.9 2.5 1.9 1.6 1.4 1.9 0.47J BDL BDL BDL 0.92J 1.7 1.3 0.75J 0.64J BDL 0.51J 6 DCFM BDL BDL NT 0.56J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 1,0001,1-DCA 41 26 NT 29 40 39 25 25 38 26 29 28 22 21 18 17 16 15 10 6.1 4.2 6.1 6.2 6.1 4.2 3.9 2 1.7 1.7 6 1,2-DCA BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.38J 0.5J BDL BDL BDL BDL BDL 0.41J BDL BDL BDL BDL BDL 0.4 1,1-DCE 0.5J 0.25J NT 0.32J BDL 0.88J 0.17J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7 cis1,2-DCE 24 14 NT 18 25 20 15 18 23 14 19 11 7.9 10 9.2 9.8 9.1 9.9 6.5 3.6 2.1 2.2 2.4 3.3 2.7 BDL 1.7 0.99J 1.2 70 trans1,2-DCE 0.36J BDL NT 0.21J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100 1,2-DCP BDL BDL NT BDL BDL BDL 0.24J BDL BDL 0.23J 0.2J 0.28J BDL 0.25J 0.2J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6 1,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL NT BDL BDL BDL 3 Ethylbenzene BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.89J BDL BDL 600 MC BDL BDL NT 14 BDL 11 0.89J BDL BDL 1.3 BDL 2.1 BDL 0.33J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 5 MI BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.29J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NSNaphthalene*BDL BDL NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.069J NT NT NT NT NT 6 PCE 0.33J 1.3 NT 2.1 BDL 1 1.2 1.5 3.0 5.2 2 6.7 5.3 3.2 3.6 2.4 2.8 1.4 1.3 0.72J 0.75J 1.6 1.4 0.67J BDL BDL BDL BDL BDL 0.7 1,2,4-TCB*BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL 0.15J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 70 TCE 2.3 1.2 NT 2.2 5.7 BDL 1 1.4 2.6 4.7 1.9 6.1 4.4 2.5 2.8 1.6 1.6 0.95J 0.8J 0.49J BDL 0.75 0.72J BDL BDL BDL BDL BDL BDL 3 Toluene BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 600Xylenes4.7 2.4 NT 4.8 BDL BDL BDL 0.34J 0.42J BDL BDL BDL BDL BDL BDL BDL BDL 2.4 BDL BDL BDL BDL 1.6 5.2 6.2 3.7 5.5 1.1 0.62J 500 VC 0.98J 0.46J NT 0.85J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.2 0.61J 0.44J 0.53J BDL BDL 0.03 Antimony 0.2J 0.66J NT 0.51J BDL 0.67J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.5BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Arsenic 0.59J 0.56J NT 0.3J 0.42J 0.56J BDL 0.36J BDL BDL BDL BDL 0.5J 1.3 BDL 0.47J BDL 0.44J BDL BDL BDL 0.38J BDL BDL 1.4J BDL 1.4J BDL BDL 10 Barium 260B 270B NT 370 310 210 140 220 230 210 190B 240 180 160B 130 160 200 210 150 160 160 210 220 270 260 240 240 200 150 700Beryllium0.58B 0.7B NT 0.82 0.68 0.39J 0.46 0.53 0.62 0.34J 0.42 0.89 0.57 0.46 0.28J 0.53 0.31J 0.39J 0.48 0.42 0.32J 0.44J 0.50 0.24J 0.21J 0.16J 0.19J 0.15J 0.25J 4 Cadmium 2.7 3.3 NT 0.81 0.27 0.11 0.30 0.20 1.80 0.57 1.10 1.8 0.58 0.74 1.4 3 0.69 0.53 3 0.51 0.36J 0.77J 0.84 0.35J 0.24J 0.38J 0.58 0.36J 0.13J 2 Cobalt 14B 6.4B NT 11 11 21 13 21 5.5 13 5.9 5.3 3.8J 7.7 6.7 6.1 5.3 17 10 3.7J 2.5J 2.1 12 35 35 29 29 26 25 1 Copper 3.9 7.7 NT 17 2.1B 2.2 0.13J 1.7 3.9 1.4B 3.2B 7.4B 2.2 2.4 7.3 21 3.5 2.9 3.9J 2.3J 1.5J 4.4J 4.6J 8.5 5.2 6.4 4.2J 3J 1.8J 1,000 Chromium 1.6J 2.8J NT 2.1J 0.75J BDL BDL 0.73J 0.6J 0.39J 1.2J 3.4J BDL 0.96J 1.9 2.6J BDL 1J 1.4J 2.2J BDL 0.74J BDL 1.3J BDL BDL BDL BDL 2.2J 10Lead1.1B 4.3 NT 3.6 0.47J 0.057J BDL 0.34J 1.2 BDL 0.79BJ 2.1 0.25J 0.34BJ 2.6 1.2 0.57J 0.79J 1.5 0.86J BDL 1.4 0.46J 0.39J BDL 0.34J 0.65J BDL 1 15 Mercury*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.16JB NT NT NT BDL BDL 1 Nickel 13 9.8 NT 11 10 17 13 12 14 11B 7.6 13 10 16 10 9.7 21 24 9.7 9.5 7.6 9.9 27 42 34 29 23 21 29 100 Selenium 0.36J BDL NT BDL BDL BDL 0.39BJ BDL BDL BDL BDL BDL 0.54J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Silver 1.1 1.7 NT 0.47BJ 0.09J BDL 0.027J BDL 1 BDL 0.015J BDL BDL BDL 0.22J 0.23J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20Thallium0.6B 0.42BJ NT 0.67 0.76 0.90 0.74 0.83 0.94 0.60 0.53 0.87 0.69 0.84 0.71 0.85 0.82 0.96 0.80 0.58 0.55 0.63J 0.87 1 0.91 0.92 1.1 0.88 0.2J 2 Vanadium 3.7J 8.1 NT 10B 2.8J BDL BDL 1.9J 2.1J BDL BDL 7.5 BDL 3.5BJ 13.00 6.40 2.7BJ 17B 2.4J BDL BDL 3.5 BDL BDL BDL BDL BDL BDL BDL 7 Zinc 44 43 NT 36 39 42 40 43B 62B 45B 33B 120 81 72 21 56 24B 73 31 4.4BJ 17 33 38B 26 22 24 23 12 4.6J 1,000 bis (2-E) P*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.6J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 3 Aldrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL 0.002alpha-BHC*NT NT NT BDL NT NT NT .0018J NT NT NT .0073JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.006 beta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT 0.038JP BDL BDL NT BDL BDL BDL 0.02 delta-BHC*NT NT NT BDL NT NT NT .004J NT NT NT .0037JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.019 gamma-BHC*NT NT NT BDL NT NT NT .0041JP NT NT NT .014JP NT NT NT .0015JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.03 trans-C*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0017JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NS4,4'-DDT*NT NT NT BDL NT NT NT .0082JP NT NT NT .0037JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.1 Dieldrin*NT NT NT BDL NT NT NT BDL NT NT NT .0029J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.002 EndosulfanI*NT NT NT BDL NT NT NT .0051JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 40 EndosulfanII*NT NT NT BDL NT NT NT .0052JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 42 Endrin*NT NT NT BDL NT NT NT .0029JP NT NT NT .001JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 2EA*NT NT NT BDL NT NT NT .005JP NT NT NT .006J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 2 DEP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.5J NT NT NT 0.41J NT NT NT BDL NT NT NT BDL NT 6,000 Di-n-BP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 700 Heptachlor*NT NT NT BDL NT NT NT BDL NT NT NT .013JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.008 HE*NT NT NT BDL NT NT NT BDL NT NT NT .0021JP NT NT NT .0062J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.0043&4-MP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT BDL NT NT NT 2.4 NT NT NT BDL NT 40 MM*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 25 Phenol*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 1.4 NT NT NT BDL NT 30 Cyanide*NT NT NT BDL NT NT NT 3J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 70 Sulfide *BDL NT BDL NT BDL BDL 1,300 BDL 640J NT BDL BDL 700J NT BDL 700J BDL NT BDL 700J BDL NT BDL BDL BDL NT BDL BDL BDL NS Notes: See other historical groundwater result tables for complete list of notes TABLE 6b (2 of 2)HISTORICAL GROUNDWATER ANALYTICAL RESULTSMW-2GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITEPERMIT NO.: 36063155 PHILADELPHIA CHURCH ROADDALLAS, NORTH CAROLINA Constituent Sampling Dates NC (ug/l)6/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 12/22 GPS Acetone BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.5J 5J 2.9J 2.6J 2.6J 4.5J BDL BDL BDL BDL BDL BDL BDL 6,000 Benzene 4.3 2.1 NT 3.20 5.6 1.1 0.35J 0.59J 0.81J 0.15J 0.3J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1CDBDL0.1J NT 0.33BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700 CB BDL BDL NT BDL BDL BDL BDL BDL BDL BDL 0.64J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.59J BDL BDL BDL BDL BDL BDL 50 CA 3.1 2.3 NT 1.8J BDL BDL BDL 1.6J 1.4J 1.2J 0.92J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.47J BDL BDL BDL BDL BDL 3,000 1,4-DCB 0.59J 0.58J NT BDL BDL 2.7 1.9 1 0.89J 1.1 BDL 2.2 1.9 2.5 1.9 1.6 1.4 1.9 0.47J BDL BDL BDL 0.92J 1.7 1.3 0.75J 0.64J BDL 0.51J BDL 6 DCFM BDL BDL NT 0.56J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 1,0001,1-DCA 41 26 NT 29 40 39 25 25 38 26 29 28 22 21 18 17 16 15 10 6.1 4.2 6.1 6.2 6.1 4.2 3.9 2 1.7 1.7 1.4 6 1,2-DCA BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.38J 0.5J BDL BDL BDL BDL BDL 0.41J BDL BDL BDL BDL BDL BDL 0.4 1,1-DCE 0.5J 0.25J NT 0.32J BDL 0.88J 0.17J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7 cis1,2-DCE 24 14 NT 18 25 20 15 18 23 14 19 11 7.9 10 9.2 9.8 9.1 9.9 6.5 3.6 2.1 2.2 2.4 3.3 2.7 BDL 1.7 0.99J 1.2 0.64J 70 trans1,2-DCE 0.36J BDL NT 0.21J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100 1,2-DCP BDL BDL NT BDL BDL BDL 0.24J BDL BDL 0.23J 0.2J 0.28J BDL 0.25J 0.2J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6 1,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL NT BDL BDL BDL BDL 3 Ethylbenzene BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.89J BDL BDL BDL 600 MC BDL BDL NT 14 BDL 11 0.89J BDL BDL 1.3 BDL 2.1 BDL 0.33J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 5 MI BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.29J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NSNaphthalene*BDL BDL NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.069J NT NT NT NT NT NT 6 PCE 0.33J 1.3 NT 2.1 BDL 1 1.2 1.5 3.0 5.2 2 6.7 5.3 3.2 3.6 2.4 2.8 1.4 1.3 0.72J 0.75J 1.6 1.4 0.67J BDL BDL BDL BDL BDL BDL 0.7 1,2,4-TCB*BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL 0.15J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 70 TCE 2.3 1.2 NT 2.2 5.7 BDL 1 1.4 2.6 4.7 1.9 6.1 4.4 2.5 2.8 1.6 1.6 0.95J 0.8J 0.49J BDL 0.75 0.72J BDL BDL BDL BDL BDL BDL BDL 3 Toluene BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 600Xylenes4.7 2.4 NT 4.8 BDL BDL BDL 0.34J 0.42J BDL BDL BDL BDL BDL BDL BDL BDL 2.4 BDL BDL BDL BDL 1.6 5.2 6.2 3.7 5.5 1.1 0.62J BDL 500 VC 0.98J 0.46J NT 0.85J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.2 0.61J 0.44J 0.53J BDL BDL BDL 0.03 Antimony 0.2J 0.66J NT 0.51J BDL 0.67J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.5BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Arsenic 0.59J 0.56J NT 0.3J 0.42J 0.56J BDL 0.36J BDL BDL BDL BDL 0.5J 1.3 BDL 0.47J BDL 0.44J BDL BDL BDL 0.38J BDL BDL 1.4J BDL 1.4J BDL BDL BDL 10 Barium 260B 270B NT 370 310 210 140 220 230 210 190B 240 180 160B 130 160 200 210 150 160 160 210 220 270 260 240 240 200 150 120 700Beryllium0.58B 0.7B NT 0.82 0.68 0.39J 0.46 0.53 0.62 0.34J 0.42 0.89 0.57 0.46 0.28J 0.53 0.31J 0.39J 0.48 0.42 0.32J 0.44J 0.50 0.24J 0.21J 0.16J 0.19J 0.15J 0.25J 0.17J 4 Cadmium 2.7 3.3 NT 0.81 0.27 0.11 0.30 0.20 1.80 0.57 1.10 1.8 0.58 0.74 1.4 3 0.69 0.53 3 0.51 0.36J 0.77J 0.84 0.35J 0.24J 0.38J 0.58 0.36J 0.13J 0.6 2 Cobalt 14B 6.4B NT 11 11 21 13 21 5.5 13 5.9 5.3 3.8J 7.7 6.7 6.1 5.3 17 10 3.7J 2.5J 2.1 12 35 35 29 29 26 25 11 1 Copper 3.9 7.7 NT 17 2.1B 2.2 0.13J 1.7 3.9 1.4B 3.2B 7.4B 2.2 2.4 7.3 21 3.5 2.9 3.9J 2.3J 1.5J 4.4J 4.6J 8.5 5.2 6.4 4.2J 3J 1.8J BDL 1,000 Chromium 1.6J 2.8J NT 2.1J 0.75J BDL BDL 0.73J 0.6J 0.39J 1.2J 3.4J BDL 0.96J 1.9 2.6J BDL 1J 1.4J 2.2J BDL 0.74J BDL 1.3J BDL BDL BDL BDL 2.2J BDL 10Lead1.1B 4.3 NT 3.6 0.47J 0.057J BDL 0.34J 1.2 BDL 0.79BJ 2.1 0.25J 0.34BJ 2.6 1.2 0.57J 0.79J 1.5 0.86J BDL 1.4 0.46J 0.39J BDL 0.34J 0.65J BDL 1 0.28J 15 Mercury*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.16JB NT NT NT BDL BDL BDL 1 Nickel 13 9.8 NT 11 10 17 13 12 14 11B 7.6 13 10 16 10 9.7 21 24 9.7 9.5 7.6 9.9 27 42 34 29 23 21 29 12 100 Selenium 0.36J BDL NT BDL BDL BDL 0.39BJ BDL BDL BDL BDL BDL 0.54J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Silver 1.1 1.7 NT 0.47BJ 0.09J BDL 0.027J BDL 1 BDL 0.015J BDL BDL BDL 0.22J 0.23J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20Thallium0.6B 0.42BJ NT 0.67 0.76 0.90 0.74 0.83 0.94 0.60 0.53 0.87 0.69 0.84 0.71 0.85 0.82 0.96 0.80 0.58 0.55 0.63J 0.87 1 0.91 0.92 1.1 0.88 0.2J 0.85 2 Vanadium 3.7J 8.1 NT 10B 2.8J BDL BDL 1.9J 2.1J BDL BDL 7.5 BDL 3.5BJ 13.00 6.40 2.7BJ 17B 2.4J BDL BDL 3.5 BDL BDL BDL BDL BDL BDL BDL BDL 7 Zinc 44 43 NT 36 39 42 40 43B 62B 45B 33B 120 81 72 21 56 24B 73 31 4.4BJ 17 33 38B 26 22 24 23 12 4.6J 34 1,000 bis (2-E) P*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.6J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 3 Aldrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT 0.002alpha-BHC*NT NT NT BDL NT NT NT .0018J NT NT NT .0073JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.006 beta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT 0.038JP BDL BDL NT BDL BDL BDL NT 0.02 delta-BHC*NT NT NT BDL NT NT NT .004J NT NT NT .0037JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.019 gamma-BHC*NT NT NT BDL NT NT NT .0041JP NT NT NT .014JP NT NT NT .0015JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.03 trans-C*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0017JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NS4,4'-DDT*NT NT NT BDL NT NT NT .0082JP NT NT NT .0037JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.1 Dieldrin*NT NT NT BDL NT NT NT BDL NT NT NT .0029J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.002 EndosulfanI*NT NT NT BDL NT NT NT .0051JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 EndosulfanII*NT NT NT BDL NT NT NT .0052JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 42 Endrin*NT NT NT BDL NT NT NT .0029JP NT NT NT .001JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 2EA*NT NT NT BDL NT NT NT .005JP NT NT NT .006J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 2 DEP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.5J NT NT NT 0.41J NT NT NT BDL NT NT NT BDL NT NT 6,000 Di-n-BP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 700 Heptachlor*NT NT NT BDL NT NT NT BDL NT NT NT .013JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.008 HE*NT NT NT BDL NT NT NT BDL NT NT NT .0021JP NT NT NT .0062J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.0043&4-MP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT BDL NT NT NT 2.4 NT NT NT BDL NT NT 40 MM*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 25 Phenol*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 1.4 NT NT NT BDL NT NT 30 Cyanide*NT NT NT BDL NT NT NT 3J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 70 Sulfide *BDL NT BDL NT BDL BDL 1,300 BDL 640J NT BDL BDL 700J NT BDL 700J BDL NT BDL 700J BDL NT BDL BDL BDL NT BDL BDL BDL NT NS Notes: See other historical groundwater result tables for complete list of notes TABLE 6c (2 of 2)HISTORICAL GROUNDWATER ANALYTICAL RESULTS MW-6 GASTON COUNTY CLOSED UNLINED LANDFILL - HARDIN SITEPERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA Constituent Sampling Date NC (ug/l)6/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 GPS Acetone BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.1J 2.9J 3J 2.4J BDL BDL BDL BDL BDL BDL BDL BDL 6,000 CD BDL BDL 0.38J 1.4B BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700 Ethylbenzene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 600 1,4-DCB BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.2J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6 1,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL NT BDL BDL BDL 3 HCA*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL BDL BDL BDL BDL 2.5 MC BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 5 MI BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.53J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NS PCE BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.7 1,1,2-TCA 1.1 BDL 1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6 Toluene BDL 1.6 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 43 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 600 Xylenes BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 500 2-MN*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL BDL BDL BDL BDL 30 Di-n-BP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL BDL BDL BDL BDL 700 Antimony 0.27J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Arsenic 0.3J 0.34J 0.48J BDL 0.31J BDL BDL 0.47J BDL 0.48J BDL BDL BDL 1.4 BDL BDL BDL BDL BDL BDL BDL 0.36J BDL BDL BDL BDL BDL BDL BDL 10 Barium 55B 55B 58 54 65 55 61 45 69 70 63B 47 77 74B 75 50 67 76 68 90 43 33 52 83 67 45 75 72 68 700 Beryllium 0.17BJ 0.17BJ BDL .038J .18J 0.18J .12J .093J 0.17J BDL .27J .036J 0.14J 0.2J 0.2J BDL 0.15J 0.3J 0.14J 0.22J BDL BDL BDL 0.22J 0.17J BDL BDL 0.23J 0.29J 4 Cadmium 0.4 0.27 0.24 .083J .079J 0.25 0.59 0.38 0.18 0.25 7 0.43 0.87 1.2 0.45J 0.33 0.31 0.71 0.44J 0.36J BDL 0.14J BDL 0.42J 0.45J BDL 0.66 0.25J BDL 2 Cobalt 2BJ 0.82BJ 1J 0.79J .93J 0.82J .93J 1.6J 0.88J 0.68J .99J 0.59J 1.2J 0.79J 1J 1.3J 1.1J 1.5J 0.98J 1.1J BDL 0.46J BDL 2.1J BDL BDL BDL BDL BDL 1 Copper 0.52J 0.56J BDL 0.19J .69BJ 0.67J BDL 0.56J 0.87J 1.4B 1.8B 1.4B 2.4 1.2 2 0.43J 0.49J 1.2 0.65J 1.6J BDL 0.5J BDL 2.8J BDL BDL BDL BDL 2.3J 1,000 Chromium 0.36J 0.54J BDL BDL 0.39J BDL BDL BDL BDL BDL .53J BDL BDL 0.76J BDL BDL BDL BDL BDL 1.7J BDL BDL BDL 4.7J BDL BDL BDL BDL 1.6J 10 Lead 0.42BJ 2.7 0.67J 0.19J 2.8 2.3 2 0.75J 4.9 1.3 4.1B 1.4 1.9 9B 6.5 0.34J 2.3 2.9 2 3.1 1 0.71J 0.77J 5.6 1.1 1 1.9 1.6 6.9 15 Mercury * NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.2 NT NT NT BDL BDL 1 Nickel 0.32J BDL BDL 0.72J BDL BDL BDL BDL 0.68J 0.34BJ .42J 0.63J BDL 0.43J BDL BDL BDL 0.65J BDL 1.3J BDL BDL BDL 2.4J BDL BDL BDL BDL BDL 100 Selenium BDL BDL BDL 0.29J .32J BDL BDL BDL BDL BDL BDL BDL 0.64J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.28 Silver 0.17J 0.039J BDL .034BJ .015J BDL .078J BDL 0.1J BDL .022J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Thallium 0.2BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL .092J .096J 0.11J BDL BDL 0.12J BDL 0.11J BDL BDL BDL 0.1J BDL 0.25J BDL BDL BDL BDL 0.15J 2 Vanadium BDL BDL BDL BDL 1.6J BDL BDL BDL BDL BDL BDL BDL 1.7J 2BJ BDL BDL 1.9BJ 3.6BJ 2.1J 3.3BJ BDL BDL BDL 12 BDL BDL BDL BDL 4.2J 7 Zinc 5.2J 6.1 BDL 1.7J 3.9J 3.6J 3.7J 4.6BJ 6.9BJ 4.8BJ 15B 23 33 31 8.5J 14 3.8BJ 20 4.5J 7.4J 2.7J 3.4J BDL 20 4.7J 3.2J 3.3J 3.2J 6.9J 1,000 bis (2-E) P*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.54J NT NT NT BDL NT NT NT BDL NT 3 DEP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.57J NT NT NT BDL NT NT NT BDL NT 6,000 Di-n-OP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 100 beta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT BDL BDL BDL NT BDL BDL BDL 0.02 gamma-BHC*NT NT NT BDL NT NT NT .0044JP NT NT NT .0015JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.03 Dieldrin*NT NT NT BDL NT NT NT .028P NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.002 Endosulfan II*NT NT NT BDL NT NT NT .0073JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 42 ES*NT NT NT BDL NT NT NT .003JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 40 MOC*NT NT NT BDL NT NT NT .0066J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 40 3&4 MP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 40 Aldrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL 0.002 Sulfide *NT NT BDL BDL BDL 13,000 BDL BDL 990J NT BDL BDL 1,600 NT BDL 800J BDL NT BDL BDL NT BDL NT BDL BDL NT BDL BDL BDL NS Notes:Only historical groundwater constituents detected are presented. Reference associated groundwater monitoring report for analytical methods and detection limits.BDL = below detection limit; NT = not testedCD = carbon disulfide; DCB = dichlorobenzene; HCA = hexachloroethane; MC = methylene chloride; MI = methyl iodide; PCE = tetrachloroethene; TCA = trichloroethane; BP = butyl phthalate; OP = octylphthalate; ES = endosulfan sulfate; MOC = methyloxychlor; MP = methylphenol; MN = methylnaphthalene; P = phthalate; bis (2-E) P = bis (2-ethylhexyl) phthalate * = denotes Appendix II constituent, remaining constituents are Appendix INCGPS = North Carolina Groundwater Protection StandardNS = no standard (NCGPS is detection limit) bold and shade denotes above established NCGPS (J-flagged data not considered) data presented in micrograms per liter (ug/l)B = detected in method blankJ = estimated result <PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards (primary standard used to establish NCGPS's) dated April 1, 2022, J-flagged groundwater data exceeding the standard does not constitute an exceedance. P = The RPD between to GC columns exceeds 40% (results suspect) TABLE 6c (2 of 2)HISTORICAL GROUNDWATER ANALYTICAL RESULTS MW-6 GASTON COUNTY CLOSED UNLINED LANDFILL - HARDIN SITEPERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA Constituent Sampling Date NC (ug/l)6/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 12/22 GPS Acetone BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.1J 2.9J 3J 2.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL 6,000 CD BDL BDL 0.38J 1.4B BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700 Ethylbenzene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 600 1,4-DCB BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.2J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6 1,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL NT BDL BDL BDL BDL 3 HCA*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL BDL BDL BDL BDL BDL 2.5 MC BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 5 MI BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.53J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NS PCE BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.7 1,1,2-TCA 1.1 BDL 1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6 Toluene BDL 1.6 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 43 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 600 Xylenes BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 500 2-MN*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL BDL BDL BDL BDL BDL 30 Di-n-BP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL BDL BDL BDL BDL BDL 700 Antimony 0.27J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Arsenic 0.3J 0.34J 0.48J BDL 0.31J BDL BDL 0.47J BDL 0.48J BDL BDL BDL 1.4 BDL BDL BDL BDL BDL BDL BDL 0.36J BDL BDL BDL BDL BDL BDL BDL BDL 10 Barium 55B 55B 58 54 65 55 61 45 69 70 63B 47 77 74B 75 50 67 76 68 90 43 33 52 83 67 45 75 72 68 61 700 Beryllium 0.17BJ 0.17BJ BDL .038J .18J 0.18J .12J .093J 0.17J BDL .27J .036J 0.14J 0.2J 0.2J BDL 0.15J 0.3J 0.14J 0.22J BDL BDL BDL 0.22J 0.17J BDL BDL 0.23J 0.29J BDL 4 Cadmium 0.4 0.27 0.24 .083J .079J 0.25 0.59 0.38 0.18 0.25 7 0.43 0.87 1.2 0.45J 0.33 0.31 0.71 0.44J 0.36J BDL 0.14J BDL 0.42J 0.45J BDL 0.66 0.25J BDL 0.34J 2 Cobalt 2BJ 0.82BJ 1J 0.79J .93J 0.82J .93J 1.6J 0.88J 0.68J .99J 0.59J 1.2J 0.79J 1J 1.3J 1.1J 1.5J 0.98J 1.1J BDL 0.46J BDL 2.1J BDL BDL BDL BDL BDL BDL 1 Copper 0.52J 0.56J BDL 0.19J .69BJ 0.67J BDL 0.56J 0.87J 1.4B 1.8B 1.4B 2.4 1.2 2 0.43J 0.49J 1.2 0.65J 1.6J BDL 0.5J BDL 2.8J BDL BDL BDL BDL 2.3J BDL 1,000 Chromium 0.36J 0.54J BDL BDL 0.39J BDL BDL BDL BDL BDL .53J BDL BDL 0.76J BDL BDL BDL BDL BDL 1.7J BDL BDL BDL 4.7J BDL BDL BDL BDL 1.6J BDL 10 Lead 0.42BJ 2.7 0.67J 0.19J 2.8 2.3 2 0.75J 4.9 1.3 4.1B 1.4 1.9 9B 6.5 0.34J 2.3 2.9 2 3.1 1 0.71J 0.77J 5.6 1.1 1 1.9 1.6 6.9 0.4J 15 Mercury * NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.2 NT NT NT BDL BDL NT 1 Nickel 0.32J BDL BDL 0.72J BDL BDL BDL BDL 0.68J 0.34BJ .42J 0.63J BDL 0.43J BDL BDL BDL 0.65J BDL 1.3J BDL BDL BDL 2.4J BDL BDL BDL BDL BDL BDL 100 Selenium BDL BDL BDL 0.29J .32J BDL BDL BDL BDL BDL BDL BDL 0.64J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.28 Silver 0.17J 0.039J BDL .034BJ .015J BDL .078J BDL 0.1J BDL .022J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Thallium 0.2BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL .092J .096J 0.11J BDL BDL 0.12J BDL 0.11J BDL BDL BDL 0.1J BDL 0.25J BDL BDL BDL BDL 0.15J BDL 2 Vanadium BDL BDL BDL BDL 1.6J BDL BDL BDL BDL BDL BDL BDL 1.7J 2BJ BDL BDL 1.9BJ 3.6BJ 2.1J 3.3BJ BDL BDL BDL 12 BDL BDL BDL BDL 4.2J BDL 7 Zinc 5.2J 6.1 BDL 1.7J 3.9J 3.6J 3.7J 4.6BJ 6.9BJ 4.8BJ 15B 23 33 31 8.5J 14 3.8BJ 20 4.5J 7.4J 2.7J 3.4J BDL 20 4.7J 3.2J 3.3J 3.2J 6.9J 3J 1,000 bis (2-E) P*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.54J NT NT NT BDL NT NT NT BDL NT NT 3 DEP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.57J NT NT NT BDL NT NT NT BDL NT NT 6,000 Di-n-OP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 100 beta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT 0.02 gamma-BHC*NT NT NT BDL NT NT NT .0044JP NT NT NT .0015JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.03 Dieldrin*NT NT NT BDL NT NT NT .028P NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.002 Endosulfan II*NT NT NT BDL NT NT NT .0073JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 42 ES*NT NT NT BDL NT NT NT .003JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 MOC*NT NT NT BDL NT NT NT .0066J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 3&4 MP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 Aldrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT 0.002 Sulfide *NT NT BDL BDL BDL 13,000 BDL BDL 990J NT BDL BDL 1,600 NT BDL 800J BDL NT BDL BDL NT BDL NT BDL BDL NT BDL BDL BDL NT NS Notes:Only historical groundwater constituents detected are presented. Reference associated groundwater monitoring report for analytical methods and detection limits.BDL = below detection limit; NT = not testedCD = carbon disulfide; DCB = dichlorobenzene; HCA = hexachloroethane; MC = methylene chloride; MI = methyl iodide; PCE = tetrachloroethene; TCA = trichloroethane; BP = butyl phthalate; OP = octylphthalate; ES = endosulfan sulfate; MOC = methyloxychlor; MP = methylphenol; MN = methylnaphthalene; P = phthalate; bis (2-E) P = bis (2-ethylhexyl) phthalate * = denotes Appendix II constituent, remaining constituents are Appendix INCGPS = North Carolina Groundwater Protection StandardNS = no standard (NCGPS is detection limit) bold and shade denotes above established NCGPS (J-flagged data not considered) data presented in micrograms per liter (ug/l)B = detected in method blankJ = estimated result <PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards (primary standard used to establish NCGPS's) dated April 1, 2022, J-flagged groundwater data exceeding the standard does not constitute an exceedance. P = The RPD between to GC columns exceeds 40% (results suspect) TABLE 6d (2 of 2)HISTORICAL GROUNDWATER ANALYTICAL RESULTSMW-7 GASTON COUNTY CLOSED UNLINED LANDFILL - HARDIN SITEPERMIT NO.: 36063155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA Constituent Sampling Date NC (ug/l)6/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 GPS Acetone BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.6J 2.7J 2.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL 6,000 Acetonitrile *NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT NT BDL NT NS Benzene 2.1 1.9 1.9 1.4 BDL 1.8 1.4 1.3 1.4 1.2 1.3 0.83J 1.1 1.2 1.2 1.1 1.4 2.0 1.7 1.4 1.2 0.99 0.72J 1.1 1 1 1 0.4J BDL 1 CB 5.4 4.4 3.4 2.8 BDL 4.5 3.8 3.9 3.4 4.4 3.1 2.3 2.4 4.3 3.8 4.7 3.5 5.5 5 5 3.4 3.1 1.5 3.8 2.8 2.4 1.9 0.68J BDL 50 CD BDL BDL 9.4 0.38J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700 CA 9.8 9.4 9.4 8 7.3 12 8.3 10 12 11 14 6.1 8.6 8.3 5.8 6.3 7.7 5 7.5 9.6 6.4 8.5 3.6 3.5 1.8J 2.1 1.4J 0.51J BDL 3,000 1,2-DCB BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.12J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 1,3-DCB*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.19J NT NT NT BDL NT NT NT BDL BDL NT NT BDL NT 200 1,4-DCB 2.8 2.5 2.2 BDL BDL 2.3 1.8 2 1.7 2 1.6 1.5 1.4 1.8 1.7 2.1 1.6 2.7 2.7 2.5 1.8 1.7 0.83J 1.6 1.9 1.4 0.85J 0.85J BDL 6 Chloroform BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.33J BDL BDL BDL 1.2B BDL BDL BDL BDL BDL 0.74 BDL BDL BDL BDL BDL BDL BDL 70 1,1-DCA 4.9 5.4 3.9 5.5 BDL 6.4 4.1 6 4.2 4.7 4.7 3.5 2.7 3.1 2.3 2.7 2.5 2.3 2 3.2 1.9 2 0.87J 1.1 0.75J 0.79J BDL BDL BDL 6 1,2-DCA 0.59J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.36J BDL BDL 0.46J BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.4 cis-1,2-DCE 0.7J 0.49J 0.74J BDL BDL BDL 0.62J 0.44J 0.4J 0.31J .45J 0.32J .33J 0.62J 1.1 0.91J 0.79J 1.3 0.8J 0.5J BDL 0.25J BDL 0.57J 0.88J 0.76J 0.87J 0.42J BDL 70 trans-1,2-DCE BDL BDL BDL BDL BDL BDL 0.25J 0.23J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100 1,2-DCP 0.54J 0.45J BDL 0.4J BDL BDL 0.38J 0.41J 0.37J 0.38J .3J 0.23J .23J 0.27J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6 1,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT 9.2 8.3 12 18 16 28 14 4 3 IA*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT NT BDL BDL NS MC BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.3 BDL BDL BDL BDL BDL 0.63J BDL BDL BDL BDL BDL BDL BDL 5 MI BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.76J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NS VC 6.9 6.8 5.4 6.3 4.7 6.6 6.1 6.5 5.4 5.9 7.1 4.2 5.2 5 2.9 4.3 4.4 3.6 4.3 6 3.8 5.4 2.7 2 1.2 1.1 BDL BDL BDL 0.03 Xylenes BDL BDL BDL 0.33J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 500 Cyanide*BDL BDL BDL 4.1J BDL BDL BDL 4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4.5J NT NT NT BDL BDL NT NT BDL NT 70 Sulfide *BDL NT BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL 1500 NT BDL BDL BDL NS Antimony 0.1J BDL 0.13J 0.76J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Arsenic 0.41J BDL 0.78J BDL 0.55J 0.41J BDL 1 BDL 0.52J BDL BDL 0.41J 0.93J BDL 0.93J BDL 0.3J 1.4J BDL BDL 0.33J BDL BDL BDL BDL BDL BDL BDL 10 Barium 350B 340B 320 300 290 290 270 350 320 350 320B 360 340 360B 370 350 350 370 380 380 320 240 230 270 350 340 300 210 87 700 Beryllium 0.41B 0.15BJ 0.4 0.16J 0.21J 0.34J 0.15J 0.2J 0.17J 0.038J 0.21J 0.71 0.2J 0.19J 0.15J BDL 0.17J 0.22J 0.19J 0.21J 0.17J 0.26J 0.2J 0.2J 0.29J 0.32J 0.28J 0.16J 0.21J 4 Cobalt 1.6BJ 1.5BJ 2.2J 1.6J 1.7J 2.4J 2.1J 2.3J 2.2J 2.3J 2.3J 3.2J 2.3J 2.4J 2.9J 3.2J 2J 1.8J 1.4J 3.3J 3.2J 2.3 2.7J 3.4J 5.1 5.6 5.4 4.8J 3.5J 1 Copper 35 10 35 7.8 22B 61 9.3 26 11 3.8B 3.4B 140B 4.5 11 14 16 2.3 10 2J 29 3.7J 1.2J 2J 2.4J 13 29 7.2 1.6J 3.4J 1,000 Cadmium 7.9 2.5 9.1 3.8 6.8 16 4 8.5 5.7 0.73 1.5 35 2 4.5 5.9 0.23J 1 3.7 BDL 6.3 1.4 0.47J 0.24J 0.9 5.7 9.6 6.5 0.51 0.74 2 Chromium 1.2J 0.39J BDL BDL BDL 0.4J 2BJ BDL BDL 0.61J BDL 2.2J BDL 0.72J BDL 7.8 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 10 Lead 2.1B 0.48J 2.1 0.34J 0.76J 2.1 0.64J 0.75J 0.61J 0.072J 0.38BJ 5.5 .23J .53BJ 0.44J 0.59J BDL 0.79J BDL 0.46J 1.9 0.19J BDL BDL 0.56J 0.86J 0.4J BDL BDL 15 Mercury*NT NT NT BDL NT NT NT .068BJ NT NT NT .061BJ NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT NT BDL BDL 1 Nickel 2.3J 1.3J 1.7J 1.6J 1.8J 1.7J 1.3J 2.4J 3J 2.1BJ 2J 2.4J 3.1J 2.3J 4.9J 3.8J 2.2J 2.9J 5.6 3.1J 2.6J 1.8J 2.7J 2.5J 2.9J 3J 3.2J 2.6J 1.5J 100 Selenium 0.49J 0.8J 0.28J 0.68J 1.1 0.75J 0.74BJ 0.83J 1.8 0.51J .52J BDL .52J 1.3 2.6 2.6 BDL BDL 4.6J BDL BDL BDL BDL 1.5J 1.7J BDL BDL BDL BDL 20 Silver 4.2 1.2 0.68J 2.1B 1.6 0.92J 0.83J 0.31BJ 3.2 BDL .031J 2 BDL .069J 1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.25J BDL BDL BDL 20 Thallium 0.26BJ BDL 0.26J BDL 0.14J 0.36J BDL 0.27J 0.15J BDL .085J 0.76 BDL 0.11J 0.18J 0.28J BDL 0.11J BDL 0.19J BDL BDL BDL BDL 0.17J 0.34J 0.17J BDL BDL 2 Vanadium 3.8J 1.5J 7.6 3.5BJ 1.7J 4.4J 2J 2.4J 1.5J BDL BDL 11 BDL 2.4BJ BDL BDL 2.1BJ 3.2BJ BDL 1.5BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL 7 Zinc 97 17 67 25 38 190 29 81B 67B 15B 21B 320 140 160 66 150 16B 110 12 78 20 14 10B 13 27 110 27 14 15 1,000 bis (2-E) P*NT NT NT BDL NT NT NT BDL NT NT NT 2.2J NT NT NT 0.55J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 3 alpha-BHC*NT NT NT BDL NT NT NT .0095JP NT NT NT .0058JP NT NT NT .002JP NT NT NT .032J NT NT NT 0.017JP NT NT NT .018JP NT 0.006 beta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT .0097JP NT NT NT .0069JP NT NT NT .019J BDL NT BDL BDL BDL NT 0.021JP .022JP BDL 0.02 delta-BHC*NT NT NT BDL NT NT NT .0057JP NT NT NT .0031J NT NT NT .0057J NT NT NT BDL NT NT NT BDL NT NT NT .021J NT 0.019 gamma-BHC*NT NT NT .0092J NT NT NT BDL NT NT NT .011JP NT NT NT .0025JP NT NT NT .024JP NT NT NT BDL NT NT NT .017JP NT 0.03 Endosulfan I*NT NT NT BDL NT NT NT .0061J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 40 4,4-DDD*NT NT NT BDL NT NT NT BDL NT NT NT .0028JP NT NT NT .016JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.1 4,4-DDE*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .024JP NT NS 4,4-DDT*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0034JP NT NT NT BDL NT NT NT BDL NT NT NT .031JP NT 0.1 Dieldrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .003JP NT NT NT BDL NT NT NT BDL NT NT NT .018JP NT 0.002 DEP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 6,000 Di-n-BP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 700 Endosulfan II*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0037JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 42 ES*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0022JP NT NT NT BDL NT NT NT BDL NT NT NT 0.044 NT 40 EA*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 2 HE*NT NT NT BDL NT NT NT BDL NT NT NT .0023JP NT NT NT .0028JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.004 2,4-D*NT NT NT BDL NT NT NT 1JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.59J NT 70 3&4 MP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT BDL BDL BDL NT BDL BDL BDL NT NT BDL NT NT NT BDL NT 40 Aldrin*NT NT NT BDL NT NT NT 1JP NT NT NT BDL NT NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL 0.002 MOP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT .0028JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 40 1,2,4-TCB*NT NT NT BDL NT NT NT .0061J NT NT NT 0.25J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 70 2,4,5-T*NT NT NT BDL NT NT NT BDL NT NT NT 0.13JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NS Notes: See other historical groundwater result tables for complete list of notes TABLE 6d (2 of 2)HISTORICAL GROUNDWATER ANALYTICAL RESULTSMW-7 GASTON COUNTY CLOSED UNLINED LANDFILL - HARDIN SITEPERMIT NO.: 36063155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA Constituent Sampling Date NC (ug/l)6/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 12/22 GPS Acetone BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.6J 2.7J 2.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6,000 Acetonitrile *NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT NT BDL NT NT NS Benzene 2.1 1.9 1.9 1.4 BDL 1.8 1.4 1.3 1.4 1.2 1.3 0.83J 1.1 1.2 1.2 1.1 1.4 2.0 1.7 1.4 1.2 0.99 0.72J 1.1 1 1 1 0.4J BDL BDL 1 CB 5.4 4.4 3.4 2.8 BDL 4.5 3.8 3.9 3.4 4.4 3.1 2.3 2.4 4.3 3.8 4.7 3.5 5.5 5 5 3.4 3.1 1.5 3.8 2.8 2.4 1.9 0.68J BDL BDL 50 CD BDL BDL 9.4 0.38J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700 CA 9.8 9.4 9.4 8 7.3 12 8.3 10 12 11 14 6.1 8.6 8.3 5.8 6.3 7.7 5 7.5 9.6 6.4 8.5 3.6 3.5 1.8J 2.1 1.4J 0.51J BDL BDL 3,000 1,2-DCB BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.12J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 1,3-DCB*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.19J NT NT NT BDL NT NT NT BDL BDL NT NT BDL NT NT 200 1,4-DCB 2.8 2.5 2.2 BDL BDL 2.3 1.8 2 1.7 2 1.6 1.5 1.4 1.8 1.7 2.1 1.6 2.7 2.7 2.5 1.8 1.7 0.83J 1.6 1.9 1.4 0.85J 0.85J BDL BDL 6 Chloroform BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.33J BDL BDL BDL 1.2B BDL BDL BDL BDL BDL 0.74 BDL BDL BDL BDL BDL BDL BDL BDL 70 1,1-DCA 4.9 5.4 3.9 5.5 BDL 6.4 4.1 6 4.2 4.7 4.7 3.5 2.7 3.1 2.3 2.7 2.5 2.3 2 3.2 1.9 2 0.87J 1.1 0.75J 0.79J BDL BDL BDL BDL 6 1,2-DCA 0.59J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.36J BDL BDL 0.46J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.4 cis-1,2-DCE 0.7J 0.49J 0.74J BDL BDL BDL 0.62J 0.44J 0.4J 0.31J .45J 0.32J .33J 0.62J 1.1 0.91J 0.79J 1.3 0.8J 0.5J BDL 0.25J BDL 0.57J 0.88J 0.76J 0.87J 0.42J BDL BDL 70 trans-1,2-DCE BDL BDL BDL BDL BDL BDL 0.25J 0.23J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100 1,2-DCP 0.54J 0.45J BDL 0.4J BDL BDL 0.38J 0.41J 0.37J 0.38J .3J 0.23J .23J 0.27J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6 1,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT 9.2 8.3 12 18 16 28 14 4 NT 3 IA*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT NT BDL BDL BDL NS MC BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.3 BDL BDL BDL BDL BDL 0.63J BDL BDL BDL BDL BDL BDL BDL BDL 5 MI BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.76J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NS VC 6.9 6.8 5.4 6.3 4.7 6.6 6.1 6.5 5.4 5.9 7.1 4.2 5.2 5 2.9 4.3 4.4 3.6 4.3 6 3.8 5.4 2.7 2 1.2 1.1 BDL BDL BDL BDL 0.03 Xylenes BDL BDL BDL 0.33J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 500 Cyanide*BDL BDL BDL 4.1J BDL BDL BDL 4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4.5J NT NT NT BDL BDL NT NT BDL NT NT 70 Sulfide *BDL NT BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL 1500 NT BDL BDL BDL BDL NS Antimony 0.1J BDL 0.13J 0.76J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Arsenic 0.41J BDL 0.78J BDL 0.55J 0.41J BDL 1 BDL 0.52J BDL BDL 0.41J 0.93J BDL 0.93J BDL 0.3J 1.4J BDL BDL 0.33J BDL BDL BDL BDL BDL BDL BDL BDL 10 Barium 350B 340B 320 300 290 290 270 350 320 350 320B 360 340 360B 370 350 350 370 380 380 320 240 230 270 350 340 300 210 87 110 700 Beryllium 0.41B 0.15BJ 0.4 0.16J 0.21J 0.34J 0.15J 0.2J 0.17J 0.038J 0.21J 0.71 0.2J 0.19J 0.15J BDL 0.17J 0.22J 0.19J 0.21J 0.17J 0.26J 0.2J 0.2J 0.29J 0.32J 0.28J 0.16J 0.21J 0.16J 4 Cobalt 1.6BJ 1.5BJ 2.2J 1.6J 1.7J 2.4J 2.1J 2.3J 2.2J 2.3J 2.3J 3.2J 2.3J 2.4J 2.9J 3.2J 2J 1.8J 1.4J 3.3J 3.2J 2.3 2.7J 3.4J 5.1 5.6 5.4 4.8J 3.5J 2.9J 1 Copper 35 10 35 7.8 22B 61 9.3 26 11 3.8B 3.4B 140B 4.5 11 14 16 2.3 10 2J 29 3.7J 1.2J 2J 2.4J 13 29 7.2 1.6J 3.4J 1.4J 1,000 Cadmium 7.9 2.5 9.1 3.8 6.8 16 4 8.5 5.7 0.73 1.5 35 2 4.5 5.9 0.23J 1 3.7 BDL 6.3 1.4 0.47J 0.24J 0.9 5.7 9.6 6.5 0.51 0.74 0.47J 2 Chromium 1.2J 0.39J BDL BDL BDL 0.4J 2BJ BDL BDL 0.61J BDL 2.2J BDL 0.72J BDL 7.8 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 10 Lead 2.1B 0.48J 2.1 0.34J 0.76J 2.1 0.64J 0.75J 0.61J 0.072J 0.38BJ 5.5 .23J .53BJ 0.44J 0.59J BDL 0.79J BDL 0.46J 1.9 0.19J BDL BDL 0.56J 0.86J 0.4J BDL BDL BDL 15 Mercury*NT NT NT BDL NT NT NT .068BJ NT NT NT .061BJ NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT NT BDL BDL BDL 1 Nickel 2.3J 1.3J 1.7J 1.6J 1.8J 1.7J 1.3J 2.4J 3J 2.1BJ 2J 2.4J 3.1J 2.3J 4.9J 3.8J 2.2J 2.9J 5.6 3.1J 2.6J 1.8J 2.7J 2.5J 2.9J 3J 3.2J 2.6J 1.5J 1.6J 100 Selenium 0.49J 0.8J 0.28J 0.68J 1.1 0.75J 0.74BJ 0.83J 1.8 0.51J .52J BDL .52J 1.3 2.6 2.6 BDL BDL 4.6J BDL BDL BDL BDL 1.5J 1.7J BDL BDL BDL BDL BDL 20 Silver 4.2 1.2 0.68J 2.1B 1.6 0.92J 0.83J 0.31BJ 3.2 BDL .031J 2 BDL .069J 1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.25J BDL BDL BDL BDL 20 Thallium 0.26BJ BDL 0.26J BDL 0.14J 0.36J BDL 0.27J 0.15J BDL .085J 0.76 BDL 0.11J 0.18J 0.28J BDL 0.11J BDL 0.19J BDL BDL BDL BDL 0.17J 0.34J 0.17J BDL BDL BDL 2 Vanadium 3.8J 1.5J 7.6 3.5BJ 1.7J 4.4J 2J 2.4J 1.5J BDL BDL 11 BDL 2.4BJ BDL BDL 2.1BJ 3.2BJ BDL 1.5BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7 Zinc 97 17 67 25 38 190 29 81B 67B 15B 21B 320 140 160 66 150 16B 110 12 78 20 14 10B 13 27 110 27 14 15 7.9J 1,000 bis (2-E) P*NT NT NT BDL NT NT NT BDL NT NT NT 2.2J NT NT NT 0.55J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 3 alpha-BHC*NT NT NT BDL NT NT NT .0095JP NT NT NT .0058JP NT NT NT .002JP NT NT NT .032J NT NT NT 0.017JP NT NT NT .018JP NT NT 0.006 beta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT .0097JP NT NT NT .0069JP NT NT NT .019J BDL NT BDL BDL BDL NT 0.021JP .022JP BDL NT 0.02 delta-BHC*NT NT NT BDL NT NT NT .0057JP NT NT NT .0031J NT NT NT .0057J NT NT NT BDL NT NT NT BDL NT NT NT .021J NT NT 0.019 gamma-BHC*NT NT NT .0092J NT NT NT BDL NT NT NT .011JP NT NT NT .0025JP NT NT NT .024JP NT NT NT BDL NT NT NT .017JP NT NT 0.03 Endosulfan I*NT NT NT BDL NT NT NT .0061J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 4,4-DDD*NT NT NT BDL NT NT NT BDL NT NT NT .0028JP NT NT NT .016JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.1 4,4-DDE*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .024JP NT NT NS 4,4-DDT*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0034JP NT NT NT BDL NT NT NT BDL NT NT NT .031JP NT NT 0.1 Dieldrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .003JP NT NT NT BDL NT NT NT BDL NT NT NT .018JP NT NT 0.002 DEP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 6,000 Di-n-BP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 700 Endosulfan II*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0037JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 42 ES*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0022JP NT NT NT BDL NT NT NT BDL NT NT NT 0.044 NT NT 40 EA*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 2 HE*NT NT NT BDL NT NT NT BDL NT NT NT .0023JP NT NT NT .0028JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.004 2,4-D*NT NT NT BDL NT NT NT 1JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.59J NT NT 70 3&4 MP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT BDL BDL BDL NT BDL BDL BDL NT NT BDL NT NT NT BDL NT NT 40 Aldrin*NT NT NT BDL NT NT NT 1JP NT NT NT BDL NT NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT 0.002 MOP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT .0028JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 1,2,4-TCB*NT NT NT BDL NT NT NT .0061J NT NT NT 0.25J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 70 2,4,5-T*NT NT NT BDL NT NT NT BDL NT NT NT 0.13JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NS Notes: See other historical groundwater result tables for complete list of notes TABLE 6e (2 of 2)HISTORICAL GROUNDWATER ANALYTICAL RESULTSMW-8GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITEPERMIT NO.: 36063155 PHILADELPHIA CHURCH ROADDALLAS, NORTH CAROLINA Constituent Sampling Date NC (ug/l)6/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 GPS Benzene BDL 1.5 BDL BDL BDL 7.1 4.8 BDL 5.3 2.1 BDL BDL BDL 2.3 BDL BDL BDL 0.84J BDL BDL BDL BDL BDL 0.72J BDL BDL 0.47J BDL BDL 1 Acetone 7.2J BDL BDL BDL BDL 9.5J BDL BDL BDL BDL BDL BDL BDL BDL BDL 4J BDL 3.1J 3.5J 2.6J BDL BDL BDL BDL BDL BDL BDL BDL BDL 6,000 CD BDL BDL BDL .24J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700 CA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.42J BDL BDL BDL BDL BDL BDL BDL BDL 0.48J BDL BDL 3,000 Chloroform BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 70 Cyanide*NT NT NT BDL NT NT NT 5.1J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 70 1,2-DCB BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 1,4-DCB BDL BDL BDL BDL BDL 3.0 1.1 BDL 2.2 1.5 BDL BDL BDL 1.1 BDL BDL BDL 0.98J BDL BDL BDL BDL BDL 0.95J BDL BDL 0.57J 0.56J BDL 6 1,1-DCA .73J 20 BDL .32J BDL 91 51 3.8 52 33 0.47J BDL .18J 34 0.14J 0.4J 3.3 27 0.97J 5.9 BDL BDL BDL 34 3.8 BDL 22 13 6.4 6 1,2-DCA BDL BDL BDL BDL BDL BDL 0.99J BDL 1.3 0.52J BDL BDL BDL BDL BDL BDL 0.28J 0.51J BDL BDL BDL BDL BDL 0.51J BDL BDL BDL BDL BDL 0.4 1,1-DCE BDL BDL BDL BDL BDL 0.84J 0.21J BDL 0.19J 0.19J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.48J BDL BDL BDL BDL BDL 7 cis-1,2-DCE BDL 21 BDL .15J BDL 76 45 2 56 21 BDL BDL BDL 19 BDL BDL 1.7 6.5 BDL 0.94J BDL BDL BDL 8.8 BDL BDL 7.4 4.3 2 70 trans-1,2-DCE BDL BDL BDL BDL BDL BDL 0.54J BDL .65J 0.27J BDL BDL BDL 0.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100 1,2-DCP BDL BDL BDL BDL BDL .72J 0.28J BDL .41J 0.22J BDL BDL BDL 0.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6 DCFM*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.71J NT NT NT BDL NT 1,000 1,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL NT BDL BDL 1.3J 3 beta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT BDL BDL BDL NT 0.26 0 0.019JP 0.02 delta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.019 gamma-BHC*NT NT NT BDL NT NT NT 0.0032J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.03 Endosulfan II*NT NT NT BDL NT NT NT 0.0048J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 42 ES*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 40 Endrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0017BJP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 2 EA*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 2 HE*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0021JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.004 MC BDL BDL BDL BDL BDL 0.79J 0.87J BDL .52J BDL BDL BDL BDL 0.38J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 5 MI BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.87J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NS 3&4-MP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 40 bis (2-E) P*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT 0.74J NT NT NT 0.44J NT NT NT BDL NT NT NT BDL NT 3 DEP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT 0.43J NT NT NT BDL NT NT NT BDL NT 6,000 Aldrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NS Sulfide *BDL NT BDL BDL 14,000 BDL 1,600 BDL 1,900 NT BDL BDL BDL NT BDL 1,300 BDL NT BDL BDL BDL NT BDL BDL 1,800 NT BDL BDL BDL NS Di-n-BP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 700 Di-n-OP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 100 PCE BDL .23J BDL BDL BDL BDL 0.37J BDL .34J BDL BDL BDL BDL 0.31J BDL BDL BDL 0.42J BDL BDL BDL BDL BDL 0.71J BDL BDL 0.58J 0.45J BDL 0.7 1,1,1-TCA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 200 TCE BDL 1.3 BDL BDL BDL .55J 1.4 BDL 1.1 0.51J BDL BDL BDL 0.78J BDL BDL BDL 0.8J BDL BDL BDL BDL BDL 1.9 BDL BDL 1.7 1.1 BDL 3 VC BDL .25J BDL BDL BDL BDL 1.2 BDL 1.4 0.72J BDL BDL BDL 1.2 BDL BDL BDL 0.48J BDL BDL BDL BDL BDL 0.42J BDL BDL BDL BDL BDL 0.03 Toluene BDL 3.5 BDL BDL BDL 9.3 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 13 BDL 25 BDL BDL 600 TCFM BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2,000 Antimony BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.2J BDL BDL BDL BDL BDL BDL BDL 0.32J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Arsenic BDL BDL 0.42J BDL BDL BDL BDL BDL BDL 0.29J BDL 12B 2.9J 4.2J BDL BDL BDL BDL BDL BDL BDL 0.28J BDL BDL BDL BDL BDL BDL BDL 10 Barium 70B 54B 72 98 110 88 110 230 93 59 150B 340 200 72B 120 170 140 65 85 64 93 110 120 96 75 130 110 73 52 700 Beryllium .52B 0.5B 0.57 0.75 0.72 0.71 0.63 1.4 0.59 0.2J 1.1 2.2 1.4 0.55 0.58 1.3 0.75 0.69 0.64 0.55 0.5 0.81J 0.91 0.72 0.58 0.79 0.74 0.53 0.38J 4 Cadmium 0.41 .076J 0.21 0.21 0.27 BDL 0.18 0.17 .092J 0.28 1.4 0.59 3.1 0.37J 0.33 1.8 0.22 3.7 1 0.55 0.3J 0.31J 1.5 0.59 0.76 BDL BDL BDL 0.37J 2 Cobalt .41BJ .42BJ 0.42J .95J .97J 1.3J 1.1J 3J .89J 1.2J 1.6J 4.4J 2.2J 1.3J 1.3J 2.4J 1.4J 1J 0.88J 0.77J BDL 1.3 1.3J BDL BDL 1.3J 3 BDL BDL 1 Copper .67J 1.2 0.58J 1 1.7B 1.6 BDL 1.6 1 1.3B 4.2B 5B 7.8 2.6J 1.2 5.2 1 1.8 1.4J 4.6J 5.3 2.8J 2J 1.8J 5.1 BDL 2.3J 2.3J 1.6J 1,000 Chromium BDL 0.6J 0.6J BDL BDL .56J BDL BDL BDL 0.95J 0.66J 2.4J 1.3J 3.4J BDL BDL BDL BDL BDL 2J BDL BDL BDL BDL BDL BDL BDL BDL BDL 10 Lead 1.1B BDL 1.4 2 2 2.4 2.6 4.1 1.8 0.62J 6.3B 18 9.5 3.2B 1.7 13 2 1.8 1.9 1.6 BDL 2 2.7 1.9 BDL 2 1.7 0.94J 1.5 15 Mercury*NT NT NT BDL NT NT NT .098BJ NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 1 Nickel .37J 1.8 BDL .89J .41J .89J BDL 0.81J .63J 1.3BJ 1J 2J 2J BDL 0.68J 1.4J BDL 0.8J BDL 2.7J 75 BDL BDL BDL 2.6 BDL BDL BDL BDL 100 Selenium BDL BDL BDL .38J BDL .27J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Silver .12J BDL BDL .13BJ .054J BDL BDL BDL .052J BDL .026J BDL .13BJ 0.37J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Thallium BDL BDL BDL 0.1J BDL BDL BDL BDL BDL BDL BDL 0.18J 0.51 0.58J BDL .085J BDL 0.098J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.28J 2 Vanadium BDL BDL 1.7J 1.9BJ BDL 1.9J BDL BDL BDL BDL BDL 5.3 5.1 BDL BDL BDL 2.3BJ 2.5BJ BDL 2.9BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL 7 Zinc 4J 7.6J 3J 14 8J 68 5.7J 18B 17B 13B 31B 190 87 57 21 86 10B 23 12 12 12 7.9J 13B 12 8.6J 5.2J 6.4J 3.4J 8.8J 1,000 Only historical groundwater constituents detected are presented.Reference associated groundwater monitoring report for analytical methods and detection limits.BDL = below detection limit; NT = not tested; CD = carbon disulfide; CA = chloroethane; DCB = dichlorobenzene; DCA = dichloroethane; DCE = dichloroethene; DCP = dichloropropane; DEP = diethylphthalate; ES = endosulfan sulfate; EA = endrin aldehyde; HE = heptachlor epoxide; MC = methylene chloride; MP = methylphenol; BP = butyl phthalate; OP= octylphthalate; P = phthalate; PCE = tetrachloroethene; TCA = trichloroethane; TCE = trichloroethene; VC = vinyl chloride; TCFM = trichlorofluoromethane; DCFM = dichlorodifluoromethane* = denotes Appendix II constituent, remaining constituents are Appendix INCGPS = North Carolina Groundwater Protection Standard; NS = no standard; data presented in micrograms per liter (ug/l)bold and shade denotes above established NCGPS's; data presented in micrograms per liter (ug/l); B = detected in method blank; J = estimated result <PQL and >=MDL; P = The RPD between to GC columns exceeds 40% (results suspect) TABLE 6e (2 of 2)HISTORICAL GROUNDWATER ANALYTICAL RESULTSMW-8GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITEPERMIT NO.: 36063155 PHILADELPHIA CHURCH ROADDALLAS, NORTH CAROLINA Constituent Sampling Date NC (ug/l)6/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 12/22 GPS Benzene BDL 1.5 BDL BDL BDL 7.1 4.8 BDL 5.3 2.1 BDL BDL BDL 2.3 BDL BDL BDL 0.84J BDL BDL BDL BDL BDL 0.72J BDL BDL 0.47J BDL BDL BDL 1 Acetone 7.2J BDL BDL BDL BDL 9.5J BDL BDL BDL BDL BDL BDL BDL BDL BDL 4J BDL 3.1J 3.5J 2.6J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6,000 CD BDL BDL BDL .24J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700 CA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.42J BDL BDL BDL BDL BDL BDL BDL BDL 0.48J BDL BDL BDL 3,000 Chloroform BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 70 Cyanide*NT NT NT BDL NT NT NT 5.1J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 70 1,2-DCB BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 1,4-DCB BDL BDL BDL BDL BDL 3.0 1.1 BDL 2.2 1.5 BDL BDL BDL 1.1 BDL BDL BDL 0.98J BDL BDL BDL BDL BDL 0.95J BDL BDL 0.57J 0.56J BDL BDL 6 1,1-DCA .73J 20 BDL .32J BDL 91 51 3.8 52 33 0.47J BDL .18J 34 0.14J 0.4J 3.3 27 0.97J 5.9 BDL BDL BDL 34 3.8 BDL 22 13 6.4 BDL 6 1,2-DCA BDL BDL BDL BDL BDL BDL 0.99J BDL 1.3 0.52J BDL BDL BDL BDL BDL BDL 0.28J 0.51J BDL BDL BDL BDL BDL 0.51J BDL BDL BDL BDL BDL BDL 0.4 1,1-DCE BDL BDL BDL BDL BDL 0.84J 0.21J BDL 0.19J 0.19J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.48J BDL BDL BDL BDL BDL BDL 7 cis-1,2-DCE BDL 21 BDL .15J BDL 76 45 2 56 21 BDL BDL BDL 19 BDL BDL 1.7 6.5 BDL 0.94J BDL BDL BDL 8.8 BDL BDL 7.4 4.3 2 BDL 70 trans-1,2-DCE BDL BDL BDL BDL BDL BDL 0.54J BDL .65J 0.27J BDL BDL BDL 0.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100 1,2-DCP BDL BDL BDL BDL BDL .72J 0.28J BDL .41J 0.22J BDL BDL BDL 0.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6 DCFM*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.71J NT NT NT BDL NT NT 1,000 1,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL NT BDL BDL 1.3J NT 3 beta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT BDL BDL BDL NT 0.26 0 0.019JP NT 0.02 delta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.019 gamma-BHC*NT NT NT BDL NT NT NT 0.0032J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.03 Endosulfan II*NT NT NT BDL NT NT NT 0.0048J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 42 ES*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 Endrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0017BJP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 2 EA*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 2 HE*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0021JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.004 MC BDL BDL BDL BDL BDL 0.79J 0.87J BDL .52J BDL BDL BDL BDL 0.38J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 5 MI BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.87J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NS 3&4-MP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 bis (2-E) P*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT 0.74J NT NT NT 0.44J NT NT NT BDL NT NT NT BDL NT NT 3 DEP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT 0.43J NT NT NT BDL NT NT NT BDL NT NT 6,000 Aldrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL BDL NS Sulfide *BDL NT BDL BDL 14,000 BDL 1,600 BDL 1,900 NT BDL BDL BDL NT BDL 1,300 BDL NT BDL BDL BDL NT BDL BDL 1,800 NT BDL BDL BDL BDL NS Di-n-BP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 700 Di-n-OP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 100 PCE BDL .23J BDL BDL BDL BDL 0.37J BDL .34J BDL BDL BDL BDL 0.31J BDL BDL BDL 0.42J BDL BDL BDL BDL BDL 0.71J BDL BDL 0.58J 0.45J BDL BDL 0.7 1,1,1-TCA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 200 TCE BDL 1.3 BDL BDL BDL .55J 1.4 BDL 1.1 0.51J BDL BDL BDL 0.78J BDL BDL BDL 0.8J BDL BDL BDL BDL BDL 1.9 BDL BDL 1.7 1.1 BDL BDL 3 VC BDL .25J BDL BDL BDL BDL 1.2 BDL 1.4 0.72J BDL BDL BDL 1.2 BDL BDL BDL 0.48J BDL BDL BDL BDL BDL 0.42J BDL BDL BDL BDL BDL BDL 0.03 Toluene BDL 3.5 BDL BDL BDL 9.3 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 13 BDL 25 BDL BDL BDL 600 TCFM BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2,000 Antimony BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.2J BDL BDL BDL BDL BDL BDL BDL 0.32J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Arsenic BDL BDL 0.42J BDL BDL BDL BDL BDL BDL 0.29J BDL 12B 2.9J 4.2J BDL BDL BDL BDL BDL BDL BDL 0.28J BDL BDL BDL BDL BDL BDL BDL BDL 10 Barium 70B 54B 72 98 110 88 110 230 93 59 150B 340 200 72B 120 170 140 65 85 64 93 110 120 96 75 130 110 73 52 71 700 Beryllium .52B 0.5B 0.57 0.75 0.72 0.71 0.63 1.4 0.59 0.2J 1.1 2.2 1.4 0.55 0.58 1.3 0.75 0.69 0.64 0.55 0.5 0.81J 0.91 0.72 0.58 0.79 0.74 0.53 0.38J 0.75 4 Cadmium 0.41 .076J 0.21 0.21 0.27 BDL 0.18 0.17 .092J 0.28 1.4 0.59 3.1 0.37J 0.33 1.8 0.22 3.7 1 0.55 0.3J 0.31J 1.5 0.59 0.76 BDL BDL BDL 0.37J 0.33J 2 Cobalt .41BJ .42BJ 0.42J .95J .97J 1.3J 1.1J 3J .89J 1.2J 1.6J 4.4J 2.2J 1.3J 1.3J 2.4J 1.4J 1J 0.88J 0.77J BDL 1.3 1.3J BDL BDL 1.3J 3 BDL BDL BDL 1 Copper .67J 1.2 0.58J 1 1.7B 1.6 BDL 1.6 1 1.3B 4.2B 5B 7.8 2.6J 1.2 5.2 1 1.8 1.4J 4.6J 5.3 2.8J 2J 1.8J 5.1 BDL 2.3J 2.3J 1.6J BDL 1,000 Chromium BDL 0.6J 0.6J BDL BDL .56J BDL BDL BDL 0.95J 0.66J 2.4J 1.3J 3.4J BDL BDL BDL BDL BDL 2J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 10 Lead 1.1B BDL 1.4 2 2 2.4 2.6 4.1 1.8 0.62J 6.3B 18 9.5 3.2B 1.7 13 2 1.8 1.9 1.6 BDL 2 2.7 1.9 BDL 2 1.7 0.94J 1.5 1.8 15 Mercury*NT NT NT BDL NT NT NT .098BJ NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 1 Nickel .37J 1.8 BDL .89J .41J .89J BDL 0.81J .63J 1.3BJ 1J 2J 2J BDL 0.68J 1.4J BDL 0.8J BDL 2.7J 75 BDL BDL BDL 2.6 BDL BDL BDL BDL BDL 100 Selenium BDL BDL BDL .38J BDL .27J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Silver .12J BDL BDL .13BJ .054J BDL BDL BDL .052J BDL .026J BDL .13BJ 0.37J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Thallium BDL BDL BDL 0.1J BDL BDL BDL BDL BDL BDL BDL 0.18J 0.51 0.58J BDL .085J BDL 0.098J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.28J 0.22J 2 Vanadium BDL BDL 1.7J 1.9BJ BDL 1.9J BDL BDL BDL BDL BDL 5.3 5.1 BDL BDL BDL 2.3BJ 2.5BJ BDL 2.9BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7 Zinc 4J 7.6J 3J 14 8J 68 5.7J 18B 17B 13B 31B 190 87 57 21 86 10B 23 12 12 12 7.9J 13B 12 8.6J 5.2J 6.4J 3.4J 8.8J 4.3J 1,000 Only historical groundwater constituents detected are presented.Reference associated groundwater monitoring report for analytical methods and detection limits.BDL = below detection limit; NT = not tested; CD = carbon disulfide; CA = chloroethane; DCB = dichlorobenzene; DCA = dichloroethane; DCE = dichloroethene; DCP = dichloropropane; DEP = diethylphthalate; ES = endosulfan sulfate; EA = endrin aldehyde; HE = heptachlor epoxide; MC = methylene chloride; MP = methylphenol; BP = butyl phthalate; OP= octylphthalate; P = phthalate; PCE = tetrachloroethene; TCA = trichloroethane; TCE = trichloroethene; VC = vinyl chloride; TCFM = trichlorofluoromethane; DCFM = dichlorodifluoromethane* = denotes Appendix II constituent, remaining constituents are Appendix INCGPS = North Carolina Groundwater Protection Standard; NS = no standard; data presented in micrograms per liter (ug/l)bold and shade denotes above established NCGPS's; data presented in micrograms per liter (ug/l); B = detected in method blank; J = estimated result <PQL and >=MDL; P = The RPD between to GC columns exceeds 40% (results suspect) TABLE 6f (2 of 2)HISTORICAL GROUNDWATER ANALYTICAL RESULTSMW-9GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITEPERMIT NO.: 36063155 PHILADELPHIA CHURCH ROADDALLAS, NORTH CAROLINA Constituent NC (ug/l)6/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 GPS Acetone 4,700 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4.8J 4.5J 2.2J 2.3J BDL 8J 22 BDL BDL BDL BDL BDL 6,000 Acetonitrile *NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NS Benzene 14 3.4 BDL BDL BDL 1.5 BDL BDL 0.86J 2.4 BDL BDL BDL 0.22J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 bis (2-E) P* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.76J NT NT NT 0.8J NT NT NT BDL NT 3 2-Butanone 77 77 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4,000 CD BDL BDL BDL 0.27J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700CB0.73J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 50 CA 9.9 2.1 BDL BDL BDL BDL BDL BDL 0.49J 0.76J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3,000 CM BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 DCFM NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 1,000 DEP* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.81J NT NT NT BDL NT NT NT BDL NT 6,000Di-n-BP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 700 Di-n-OP* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 100 3&4-MP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT BDL NT NT NT 2 NT NT NT BDL NT 40 Aldrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL 0.002 Phenol*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 301,4-DCB 4.5 3.3 BDL BDL BDL 0.33J BDL BDL BDL 0.84J BDL BDL BDL 0.36J BDL BDL BDL 0.42J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6 1,1-DCA 21 10 BDL 1.7 BDL 6.1 .52J 0.31J 6.2 9.1 BDL BDL .14J 1.8 BDL BDL 0.38J 5.1 0.47J 3.9 BDL BDL BDL BDL BDL BDL BDL BDL 1.2 6 1,1-DCE BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7 1,2-DCA 1.5 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.2 0.86J 0.4 cis 1,2-DCE 170 68 BDL 0.18J BDL 12 1.1 0.7J 12 22 BDL BDL .31J 4.9 BDL BDL 0.32J 6.3 0.5J 3.1 BDL BDL BDL BDL BDL BDL BDL 0.93J BDL 70trans-1,2-DCE 0.85J .31J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100 1,2-DCP 0.37J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6 1,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL NT BDL BDL 1J 3 EB 3.6 .47J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 600 2-Hexanone 0.89J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 280IA*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NS MC 0.44J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 5 MI BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.49J BDL BDL 0.41J BDL BDL BDL BDL BDL BDL BDL BDL BDL NS MM*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NS 4-M-2-P 0.47J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100Naphthalene* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 6 Sulfide *2,000 NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 800J BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NS 1,1,2,2-TCA BDL .28J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.2 PCE 2.9 .7J 0.37 2.5 BDL BDL .28J BDL 1.40 0.96J BDL BDL BDL 0.38J BDL BDL BDL 0.71J BDL 0.44J BDL 0.31J BDL BDL BDL BDL 0.41J BDL 0.42J 0.7 Toluene 0.92J BDL BDL BDL BDL 2.1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.53J BDL BDL BDL 1.4 BDL 6001,1,1-TCA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 200 TCE 13 1.7 BDL 0.54J BDL BDL .37J 0.28J 3.2 6.7 BDL BDL BDL 1 BDL BDL BDL 1.5 BDL 0.95J BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 Xylenes 12 2.4 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 500 TCFM BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2,000 VC 2.9 .79J BDL BDL BDL BDL BDL BDL BDL 0.11J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.03Antimony0.23J BDL BDL BDL BDL BDL BDL BDL BDL 0.12J BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.51J BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.4 Arsenic 1.4 .97J 0.8J BDL BDL BDL BDL 0.77J BDL 1 BDL BDL .31J BDL BDL BDL BDL 0.95J BDL BDL BDL 0.36J BDL BDL 2.3 BDL BDL BDL 1.9J 10 Barium 130B 22B 34 70 46 42 52 BDL 51 65 59B 70 74 87B 81 230 100 85 86 120 160 82 41 68 140 68 76 73 160 700 Beryllium 0.38BJ .16BJ 0.13J 0.36J 0.12J 0.17J .23J 56 0.2J 0.21J 0.1J .27J .19J 0.28J 0.22J 1.7 0.23J 0.55 0.39J 1.2 0.58 0.18J BDL 0.27J 0.59 0.23J 0.17J 0.16J 2 4 Cadmium 0.23 0.27 0.35 0.3 0.15 0.13 0.43 0.28J 0.18 0.82 0.31 0.25 0.95 0.38 0.37 1.00 0.31 0.33 0.2J 1.80 0.79 0.17J BDL 0.53 0.56 0.32J 7.6 0.26J 2 2Cobalt20B3.4BJ 0.7J 1.2J 0.3J 1.1J .59J 0.47J 0.8J 4.2J 0.27J 0.43J .51J 1.2J 0.36J 3.3J 0.66J 6.5 1.2J 5.3 2.5J 3.7 10 7.2 4.7J 1.8J 3.5J 5.1 6.6 1 Copper 2.2 1.2 1.8 1.7 1.3B 2.2 1.9 2 1.4 3.3B 2B 2B 4 2.3 1.7 28 1.4 2.8 2.2J 5.6 17 1.3J BDL 2.8J 10 2.8J 2.6J 2J 10 1,000 Chromium 0.92J .36J BDL BDL BDL BDL BDL 0.22 BDL 1.3J BDL .62J .38J 0.35J BDL 11J BDL BDL BDL 8.6 8.1 0.2J BDL BDL 4.1J BDL BDL BDL 5.3 10 Lead 0.55BJ .49J 1.3 1.1 0.56J 0.38J 1.6 1.1 0.73J 1.8 0.8BJ .58J 1.3 .78BJ 0.63J 41 0.61J 1.7 1 2.6 18 1.2 0.53 1.3 10 0.86J 0.6J 1.2 14 15 Mercury *NT NT NT BDL NT NT NT .06BJ NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 1Nickel1.7J BDL BDL 1.2J 0.7J BDL .47J 0.79J 0.72J 1.7BJ 0.9J 1.4J 1.3J 1.2J 1.1J 4.1J 0.9J 1.5J BDL 12 3.6J BDL BDL BDL 1.7J BDL BDL BDL 3.1J 100 Selenium 0.86J 0.5J BDL 0.39J 0.34J BDL .29BJ BDL BDL BDL BDL BDL .49J BDL BDL 2.1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.6J 20 Silver .066J .056J BDL 0.16BJ 0.024J BDL .08J BDL 0.1J BDL BDL BDL .053BJ .017J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Thallium 0.1BJ .12BJ BDL 0.096J BDL BDL .083J .077J 0.12J BDL BDL 0.12J 0.26J 0.2J 0.16J 0.71 0.15J 0.2J 0.19J 0.22J 0.42J 0.19J BDL 0.22J 0.32J 0.16J 0.2J 0.17J 0.46J 2 Vanadium 3.3J BDL 2.5J 2.4BJ BDL BDL 2.6J 1.6J BDL 2.2J BDL BDL 1.8J 2BJ 2BJ 32J 2.1BJ 3.7BJ BDL 10B 25 BDL 3.2J BDL 14 BDL BDL BDL 20 7Zinc23104.8J 11 12 9.1J 8.5J 12B 13B 17B 11B 36 33 39 9.9J 92 8BJ 25 9.2J 28 33 11 6.1BJ 7.3J 44 7.2J 6.4J 7.6J 62 1,000 alpha-BHC* NT NT NT BDL NT NT NT .0014J NT NT NT .001JP NT NT NT BDL NT NT NT .018JP NT NT NT BDL NT NT NT .091P NT 0.006 beta-BHC *NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 1.3 BDL NT BDL BDL BDL NT 1.1PQ 4.5 0.27PQ 0.02 delta-BHC* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .02JP NT 0.019 gamma-BHC* NT NT NT BDL NT NT NT .0084JP NT NT NT BDL NT NT NT BDL NT NT NT .065P NT NT NT BDL NT NT NT 0.11P NT 0.034,4-DDD* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .03J NT 0.1 4,4'-DDT* NT NT NT BDL NT NT NT 0.12P NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.1 Heptachlor* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .026J NT 0.008 MOC* NT NT NT BDL NT NT NT BDL NT NT NT .002JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT 0.1 Notes: See other historical groundwater result tables for complete list of notes Sampling Date TABLE 6f (2 of 2)HISTORICAL GROUNDWATER ANALYTICAL RESULTSMW-9GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITEPERMIT NO.: 36063155 PHILADELPHIA CHURCH ROADDALLAS, NORTH CAROLINA Constituent NC (ug/l)6/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 12/22 GPS Acetone 4,700 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4.8J 4.5J 2.2J 2.3J BDL 8J 22 BDL BDL BDL BDL BDL BDL 6,000 Acetonitrile *NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NS Benzene 14 3.4 BDL BDL BDL 1.5 BDL BDL 0.86J 2.4 BDL BDL BDL 0.22J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 bis (2-E) P* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.76J NT NT NT 0.8J NT NT NT BDL NT NT 3 2-Butanone 77 77 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4,000 CD BDL BDL BDL 0.27J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700CB0.73J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 50 CA 9.9 2.1 BDL BDL BDL BDL BDL BDL 0.49J 0.76J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3,000 CM BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 DCFM NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 1,000 DEP* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.81J NT NT NT BDL NT NT NT BDL NT NT 6,000Di-n-BP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 700 Di-n-OP* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 100 3&4-MP*NT NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT BDL NT NT NT 2 NT NT NT BDL NT NT 40 Aldrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT 0.002 Phenol*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 301,4-DCB 4.5 3.3 BDL BDL BDL 0.33J BDL BDL BDL 0.84J BDL BDL BDL 0.36J BDL BDL BDL 0.42J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6 1,1-DCA 21 10 BDL 1.7 BDL 6.1 .52J 0.31J 6.2 9.1 BDL BDL .14J 1.8 BDL BDL 0.38J 5.1 0.47J 3.9 BDL BDL BDL BDL BDL BDL BDL BDL 1.2 BDL 6 1,1-DCE BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7 1,2-DCA 1.5 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.2 0.86J BDL 0.4 cis 1,2-DCE 170 68 BDL 0.18J BDL 12 1.1 0.7J 12 22 BDL BDL .31J 4.9 BDL BDL 0.32J 6.3 0.5J 3.1 BDL BDL BDL BDL BDL BDL BDL 0.93J BDL BDL 70trans-1,2-DCE 0.85J .31J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100 1,2-DCP 0.37J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6 1,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL NT BDL BDL 1J NT 3 EB 3.6 .47J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 600 2-Hexanone 0.89J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 280IA*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NS MC 0.44J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 5 MI BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.49J BDL BDL 0.41J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NS MM*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NS 4-M-2-P 0.47J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100Naphthalene* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 6 Sulfide *2,000 NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 800J BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL BDL NS 1,1,2,2-TCA BDL .28J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.2 PCE 2.9 .7J 0.37 2.5 BDL BDL .28J BDL 1.40 0.96J BDL BDL BDL 0.38J BDL BDL BDL 0.71J BDL 0.44J BDL 0.31J BDL BDL BDL BDL 0.41J BDL 0.42J BDL 0.7 Toluene 0.92J BDL BDL BDL BDL 2.1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.53J BDL BDL BDL 1.4 BDL BDL 6001,1,1-TCA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 200 TCE 13 1.7 BDL 0.54J BDL BDL .37J 0.28J 3.2 6.7 BDL BDL BDL 1 BDL BDL BDL 1.5 BDL 0.95J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 Xylenes 12 2.4 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 500 TCFM BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2,000 VC 2.9 .79J BDL BDL BDL BDL BDL BDL BDL 0.11J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.03Antimony0.23J BDL BDL BDL BDL BDL BDL BDL BDL 0.12J BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.51J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.4 Arsenic 1.4 .97J 0.8J BDL BDL BDL BDL 0.77J BDL 1 BDL BDL .31J BDL BDL BDL BDL 0.95J BDL BDL BDL 0.36J BDL BDL 2.3 BDL BDL BDL 1.9J BDL 10 Barium 130B 22B 34 70 46 42 52 BDL 51 65 59B 70 74 87B 81 230 100 85 86 120 160 82 41 68 140 68 76 73 160 58 700 Beryllium 0.38BJ .16BJ 0.13J 0.36J 0.12J 0.17J .23J 56 0.2J 0.21J 0.1J .27J .19J 0.28J 0.22J 1.7 0.23J 0.55 0.39J 1.2 0.58 0.18J BDL 0.27J 0.59 0.23J 0.17J 0.16J 2 0.19J 4 Cadmium 0.23 0.27 0.35 0.3 0.15 0.13 0.43 0.28J 0.18 0.82 0.31 0.25 0.95 0.38 0.37 1.00 0.31 0.33 0.2J 1.80 0.79 0.17J BDL 0.53 0.56 0.32J 7.6 0.26J 2 0.57 2Cobalt20B3.4BJ 0.7J 1.2J 0.3J 1.1J .59J 0.47J 0.8J 4.2J 0.27J 0.43J .51J 1.2J 0.36J 3.3J 0.66J 6.5 1.2J 5.3 2.5J 3.7 10 7.2 4.7J 1.8J 3.5J 5.1 6.6 1.4J 1 Copper 2.2 1.2 1.8 1.7 1.3B 2.2 1.9 2 1.4 3.3B 2B 2B 4 2.3 1.7 28 1.4 2.8 2.2J 5.6 17 1.3J BDL 2.8J 10 2.8J 2.6J 2J 10 1.3J 1,000 Chromium 0.92J .36J BDL BDL BDL BDL BDL 0.22 BDL 1.3J BDL .62J .38J 0.35J BDL 11J BDL BDL BDL 8.6 8.1 0.2J BDL BDL 4.1J BDL BDL BDL 5.3 BDL 10 Lead 0.55BJ .49J 1.3 1.1 0.56J 0.38J 1.6 1.1 0.73J 1.8 0.8BJ .58J 1.3 .78BJ 0.63J 41 0.61J 1.7 1 2.6 18 1.2 0.53 1.3 10 0.86J 0.6J 1.2 14 0.58J 15 Mercury *NT NT NT BDL NT NT NT .06BJ NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 1Nickel1.7J BDL BDL 1.2J 0.7J BDL .47J 0.79J 0.72J 1.7BJ 0.9J 1.4J 1.3J 1.2J 1.1J 4.1J 0.9J 1.5J BDL 12 3.6J BDL BDL BDL 1.7J BDL BDL BDL 3.1J BDL 100 Selenium 0.86J 0.5J BDL 0.39J 0.34J BDL .29BJ BDL BDL BDL BDL BDL .49J BDL BDL 2.1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.6J BDL 20 Silver .066J .056J BDL 0.16BJ 0.024J BDL .08J BDL 0.1J BDL BDL BDL .053BJ .017J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Thallium 0.1BJ .12BJ BDL 0.096J BDL BDL .083J .077J 0.12J BDL BDL 0.12J 0.26J 0.2J 0.16J 0.71 0.15J 0.2J 0.19J 0.22J 0.42J 0.19J BDL 0.22J 0.32J 0.16J 0.2J 0.17J 0.46J 0.19J 2 Vanadium 3.3J BDL 2.5J 2.4BJ BDL BDL 2.6J 1.6J BDL 2.2J BDL BDL 1.8J 2BJ 2BJ 32J 2.1BJ 3.7BJ BDL 10B 25 BDL 3.2J BDL 14 BDL BDL BDL 20 BDL 7Zinc23104.8J 11 12 9.1J 8.5J 12B 13B 17B 11B 36 33 39 9.9J 92 8BJ 25 9.2J 28 33 11 6.1BJ 7.3J 44 7.2J 6.4J 7.6J 62 4.2J 1,000 alpha-BHC* NT NT NT BDL NT NT NT .0014J NT NT NT .001JP NT NT NT BDL NT NT NT .018JP NT NT NT BDL NT NT NT .091P NT NT 0.006 beta-BHC *NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 1.3 BDL NT BDL BDL BDL NT 1.1PQ 4.5 0.27PQ NT 0.02 delta-BHC* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .02JP NT NT 0.019 gamma-BHC* NT NT NT BDL NT NT NT .0084JP NT NT NT BDL NT NT NT BDL NT NT NT .065P NT NT NT BDL NT NT NT 0.11P NT NT 0.034,4-DDD* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .03J NT NT 0.1 4,4'-DDT* NT NT NT BDL NT NT NT 0.12P NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.1 Heptachlor* NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .026J NT NT 0.008 MOC* NT NT NT BDL NT NT NT BDL NT NT NT .002JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.1 Notes: See other historical groundwater result tables for complete list of notes Sampling Date TABLE 6g (2 of 2) HISTORICAL GROUNDWATER ANALYTICAL RESULTS MW-10 AND MW-10AGASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 36063155 PHILADELPHIA CHURCH ROADDALLAS, NORTH CAROLINA Well ID MW-10 '''''''MW-10A ''''''''''''''''''''NCConstituent(ug/l)6/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 12/22 GPS Acetone BDL BDL 7.2J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3J 3.5J 2.2J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6,000 Benzene 6.3 4.8 2.9 3.1 BDL 5.7 2 0.79J 3.4 2.5 .23J 1.2 BDL 2.1 BDL 0.27J BDL 1.7 0.75J 1.9 BDL BDL BDL 0.62J BDL BDL BDL BDL BDL BDL 1CDBDLBDL0.19J 0.73BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700CB0.64J 0.52J 0.34J 0.37J BDL BDL BDL BDL 0.55J 0.73J BDL 0.43J BDL 0.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 50 CA BDL 1.1J 1.1J 0.75J BDL 1J BDL BDL 0.68J 0.71J BDL 0.48J BDL 0.5J BDL BDL BDL BDL BDL 0.61J BDL BDL BDL 0.42J BDL BDL BDL BDL BDL BDL 3,0001,4-DCB 2.1 2.5 1.5 BDL BDL 2.6 1.2 1.4 3.4 3.1 2.8 3.2 2.8 3.5 1.7 1.8 0.72J 2.6 2.1 3.5 BDL 0.33J BDL 1.3 BDL BDL BDL 0.51J BDL BDL 6DCFM*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL BDL 1,000 1,1-DCA 5.3 3.9 1.6 3 BDL 4.3 1.4 1.5 4.5 3.9 4 3.9 3.5 4.2 2.4 3.2 2.5 4.3 3.2 4.7 2.2 2.8 1 3.2 0.98J 0.82J 1.1 1.4 1.6 1.3 6 1,2-DCA 0.19J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.25J BDL BDL 0.41J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.41,1-DCE BDL BDL BDL BDL BDL 19 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7cis-1,2-DCE 20 18 9.5 13 14 BDL 8.6 7.5 19 18 13 18 70 19 8.4 13 6.9 20 14 26 8.8 11 2.8 14 2.4 1.2 3.1 6.2 6.6 4.5 70 t-1,2-DCE 0.23J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1001,2-DCP BDL BDL BDL BDL BDL BDL BDL BDL 0.19J BDL BDL BDL BDL 0.21J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.61,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL NT BDL BDL BDL BDL 3EB0.39J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 600 IBA*NT NT NT BDL NT NT NT BDL NT NT NT 0.27J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NSMC0.71J 0.37J BDL BDL BDL BDL BDL BDL 9.6 0.41J 5.8 1.3 5.6 3.2 2.5 2.1 2.6 1.6 0.74J BDL 0.99J 1 BDL 1.7 BDL BDL BDL 0.46J BDL BDL 5MIBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDL0.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NS PCE 1.1 0.58J 2.8 0.39J BDL 1.6 1.5 1.7 7.3 7.5 5.9 5.6 5.2 7.1 4.3 4.5 4.2 5.5 5.1 4.0 2.7 2.8 2.0 3.1 2.2 1.8 2.3 2.2 2.0 1.8 0.7 Styrene BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.17J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 70Toluene0.4J BDL BDL BDL BDL BDL 0.67J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6001,2,4-TCB*NT NT NT BDL NT NT NT BDL NT NT NT 0.27J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 70 1,1,1-TCA 0.19J BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.1J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 200TCE1.2 0.46J 0.77J BDL BDL BDL BDL 0.89J 6.1 5.9 4.3 4.6 3.1 5.3 2.7 3.5 2.4 4.2 3.6 4.1 1.8 2.6 0.83J 2.7 0.8J 0.51J 0.9J 1.3 1.2 0.97J 3VC0.87J 0.52J BDL 0.55J BDL 0.26J BDL BDL BDL 0.33J .17J 0.35J BDL 0.31J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.03 Xylenes 22 14 3.4 4.1 BDL BDL BDL BDL 20 6.4 BDL 2.2 BDL 2.7 BDL BDL BDL 2.5 1.2 0.55J BDL BDL BDL 0.59J BDL BDL BDL BDL BDL BDL 500 Antimony BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.11J BDL BDL .76J 0.11J BDL BDL BDL BDL BDL BDL BDL 0.36J BDL BDL BDL 0.84BJ BDL BDL BDL BDL 1Arsenic0.64J 0.59J 1.1 0.56J 0.73J 0.39J BDL 1.2 BDL 1.1 BDL 4.8BJ 2.6J BDL BDL BDL 0.27J BDL BDL BDL BDL 0.33J BDL BDL BDL BDL BDL BDL BDL BDL 10Barium980B960B1,200 1,000 1,600 940 850 1,100 550 900 310B 970 1,500 670B 260 510 250 480 550 500 280 300 120 350 160 170 180 280 280 250 700 Beryllium 1.4B 0.81B 0.79 2.4 1.7 1.5 1.2 2.1 1.3 1.4 0.86 4.3 12 1.5 0.54 2.2 1.3 1.3 1.8 1.6 0.56 0.72J 0.55 1.2 0.66 0.43 0.68 0.92 0.72 0.67 4Cadmium0.74 0.71 2 1.7 0.4 0.95 0.78 2.3 .098J 0.82 1.3 2.1 1.8 0.59 1.3 1.4 1.4 0.58 0.86 0.33J 0.15J 0.41J BDL 0.23J 0.83 0.13J 0.83 0.43J 0.13J 0.63 2Cobalt58B60B72585163595017142.5J 13 14 5.3 0.86J 6.6 1.5J 3.4J 11 7 BDL 0.69J BDL 1.3J BDL BDL BDL BDL BDL BDL 1Copper121819204.8B 5.7 2.1 4 2.4 2.6B 2.2B 13B 18 2.8 1.6 6.1 4.3 1.2 5.8 3J BDL 20.0 2.2J 1.4J 2.7J 1.6J 1.4J BDL BDL BDL 1,000 Chromium 1.4J BDL BDL 2.8J BDL 5.7 3BJ BDL 2.4J 0.87J 0.95J 6.7 7.3 0.91J 0.99J BDL 2.8J BDL 1.7J 1.8J 1.3J 0.58J 2.1J 1.4J 2J 1.7J BDL BDL BDL BDL 10Lead3B0.87J 2.7 16 2 BDL 2.5 2.7 5.5 0.5J 1.9B 25 91 3.6B 0.81J 11 7.7 1.1 7.1 3.2 0.45J 0.79J 2.3 1.8 3 1.6 1.8 1.4 0.61J 0.37J 15Mercury*NT NT NT BDL NT NT NT BDL NT NT NT 0.28B NT NT NT 0.079J NT NT NT BDL NT NT NT 0.16JB NT NT NT 0.21 0.2 BDL 1 Nickel 14 13 15 53 3.7J 13 11 13 4.9J 3.7BJ 1.3J 4.6J 3.8J 1.9J 1.8J 2.4J 1.1J 1.2J 3.1J 2.3J BDL BDL BDL BDL 1.3J BDL BDL BDL BDL BDL 100 Selenium 0.33J BDL .34J 0.37J .41J BDL .34BJ BDL BDL BDL BDL BDL BDL 0.26J BDL BDL BDL BDL 1.3J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20Silver0.36J 0.4J .078J 0.94BJ .092J BDL 0.13J BDL .053J BDL BDL BDL BDL BDL 0.44J BDL 0.67J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20Thallium.21BJ 0.13BJ BDL 0.28J .32J 0.15J 0.14J 0.19J 0.19J BDL .083J 0.5 0.47J 0.19J BDL 0.29J 0.15J 0.11J 0.2J 0.13J BDL 0.12J BDL BDL BDL BDL BDL BDL BDL BDL 2 Vanadium 5.4 1.5J 5.1 19B 2.9J 7.5 3.2J 4J 4.5J BDL BDL 26 53 5B 1.5J 11J 9.7B 3.5BJ 8.7 6.4B BDL 0.57J 3.6J 2.5J 4.1J BDL BDL BDL BDL BDL 7Zinc382326110265355130B45B34B27B4104302602116030B1104635111514B171712101412141,000alpha-BHC*NT NT NT BDL NT NT NT BDL NT NT NT .024JP NT NT NT .0078JP NT NT NT BDL NT NT NT BDL NT NT NT NT NT NT 0.006 beta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT .029JP NT NT NT .017JP NT NT NT .032JP BDL NT BDL BDL BDL NT BDL NT BDL NT 0.02 bis (2-E) P*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 3delta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT .0086JP NT NT NT .0015JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.019gamma-BHC*NT NT NT BDL NT NT NT BDL NT NT NT .013J NT NT NT .0035JP NT NT NT .04P NT NT NT BDL NT NT NT BDL NT NT 0.03 t-Chlordane*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .011J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.14,4-DDD*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0021JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.14,4-DDT*NT NT NT BDL NT NT NT BDL NT NT NT 0.017J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.1Dieldrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0039JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.002 Endosulfan I*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0022JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40ES*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0023J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40MOC*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0038JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 Di-n-BP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 700Di-n-OP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 100Endrin*NT NT NT BDL NT NT NT BDL NT NT NT .014JP NT NT NT .0023BJP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 23&4-MP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 Phenol*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 30Sulfide*BDL NT BDL NT BDL 640J BDL BDL BDL NT BDL 2,100 BDL NT 800J BDL 800J NT BDL BDL BDL NT BDL BDL BDL NT 1,100 BDL BDL NT NSAldrin*NT NT NT BDL NT NT NT BDL NT NT NT .014JP NT NT BDL .006JP BDL NT BDL .025JP BDL NT BDL BDL BDL NT BDL BDL BDL NT 0.002 HE*NT NT NT BDL NT NT NT BDL NT NT NT .012JP NT NT NT BDL NT NT NT .021J NT NT NT BDL NT NT NT BDL NT NT 0.004 Notes:Only historical groundwater constituents detected are presented.Reference associated groundwater monitoring report for analytical methods and detection limits. BDL = below detection limit; NT = not tested; NS = no standard CD=carbon disulfide;CB = chlorobenzene; CA = chloroethane;DCB = dichlorobenzene; DCA = dichloroethane; DCFM = dichlorodifluoromethane; DCE = dichloroethene; DCP = dichloropropane; EB = ethylbenzene; ES = endosulfan sulfate; bis (2-E) P = bis (2-ethyhexyl) phthalate; IBA = isobutyl alcohol; MC = methylene chloride; MI = methyl iodide; PCE = tetrachloroethene; TCE = trichloroethene; VC = vinyl chloride; BP = butyl phthalate; OP = octylphthalate TCA = trichloroethane; TCB = trichlorobenzene; MP = methylphenol; MOC = methoxychlor; HE = heptachlor epoxide; * = denotes Appendix II constituent, remaining constituents are Appendix I NCGPS = North Carolina Groundwater Protection Standard; bold and shade denotes above established NCGPSdata presented in micrograms per liter (ug/l); B = detected in method blankJ = estimated result <PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards dated April 1, 2022, J-flagged groundwater data exceeding the standard does not constitute an exceedance.P = The RPD between to GC columns exceeds 40% (results suspect) TABLE 6g (2 of 2) HISTORICAL GROUNDWATER ANALYTICAL RESULTS MW-10 AND MW-10AGASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 36063155 PHILADELPHIA CHURCH ROADDALLAS, NORTH CAROLINA Well ID MW-10 '''''''MW-10A ''''''''''''''''''''NCConstituent(ug/l)6/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 12/22 GPS Acetone BDL BDL 7.2J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3J 3.5J 2.2J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6,000 Benzene 6.3 4.8 2.9 3.1 BDL 5.7 2 0.79J 3.4 2.5 .23J 1.2 BDL 2.1 BDL 0.27J BDL 1.7 0.75J 1.9 BDL BDL BDL 0.62J BDL BDL BDL BDL BDL BDL 1CDBDLBDL0.19J 0.73BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700CB0.64J 0.52J 0.34J 0.37J BDL BDL BDL BDL 0.55J 0.73J BDL 0.43J BDL 0.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 50 CA BDL 1.1J 1.1J 0.75J BDL 1J BDL BDL 0.68J 0.71J BDL 0.48J BDL 0.5J BDL BDL BDL BDL BDL 0.61J BDL BDL BDL 0.42J BDL BDL BDL BDL BDL BDL 3,0001,4-DCB 2.1 2.5 1.5 BDL BDL 2.6 1.2 1.4 3.4 3.1 2.8 3.2 2.8 3.5 1.7 1.8 0.72J 2.6 2.1 3.5 BDL 0.33J BDL 1.3 BDL BDL BDL 0.51J BDL BDL 6DCFM*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL BDL 1,000 1,1-DCA 5.3 3.9 1.6 3 BDL 4.3 1.4 1.5 4.5 3.9 4 3.9 3.5 4.2 2.4 3.2 2.5 4.3 3.2 4.7 2.2 2.8 1 3.2 0.98J 0.82J 1.1 1.4 1.6 1.3 6 1,2-DCA 0.19J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.25J BDL BDL 0.41J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.41,1-DCE BDL BDL BDL BDL BDL 19 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7cis-1,2-DCE 20 18 9.5 13 14 BDL 8.6 7.5 19 18 13 18 70 19 8.4 13 6.9 20 14 26 8.8 11 2.8 14 2.4 1.2 3.1 6.2 6.6 4.5 70 t-1,2-DCE 0.23J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1001,2-DCP BDL BDL BDL BDL BDL BDL BDL BDL 0.19J BDL BDL BDL BDL 0.21J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.61,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL NT BDL BDL BDL BDL 3EB0.39J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 600 IBA*NT NT NT BDL NT NT NT BDL NT NT NT 0.27J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NSMC0.71J 0.37J BDL BDL BDL BDL BDL BDL 9.6 0.41J 5.8 1.3 5.6 3.2 2.5 2.1 2.6 1.6 0.74J BDL 0.99J 1 BDL 1.7 BDL BDL BDL 0.46J BDL BDL 5MIBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDL0.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NS PCE 1.1 0.58J 2.8 0.39J BDL 1.6 1.5 1.7 7.3 7.5 5.9 5.6 5.2 7.1 4.3 4.5 4.2 5.5 5.1 4.0 2.7 2.8 2.0 3.1 2.2 1.8 2.3 2.2 2.0 1.8 0.7 Styrene BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.17J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 70Toluene0.4J BDL BDL BDL BDL BDL 0.67J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6001,2,4-TCB*NT NT NT BDL NT NT NT BDL NT NT NT 0.27J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 70 1,1,1-TCA 0.19J BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.1J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 200TCE1.2 0.46J 0.77J BDL BDL BDL BDL 0.89J 6.1 5.9 4.3 4.6 3.1 5.3 2.7 3.5 2.4 4.2 3.6 4.1 1.8 2.6 0.83J 2.7 0.8J 0.51J 0.9J 1.3 1.2 0.97J 3VC0.87J 0.52J BDL 0.55J BDL 0.26J BDL BDL BDL 0.33J .17J 0.35J BDL 0.31J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.03 Xylenes 22 14 3.4 4.1 BDL BDL BDL BDL 20 6.4 BDL 2.2 BDL 2.7 BDL BDL BDL 2.5 1.2 0.55J BDL BDL BDL 0.59J BDL BDL BDL BDL BDL BDL 500 Antimony BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.11J BDL BDL .76J 0.11J BDL BDL BDL BDL BDL BDL BDL 0.36J BDL BDL BDL 0.84BJ BDL BDL BDL BDL 1Arsenic0.64J 0.59J 1.1 0.56J 0.73J 0.39J BDL 1.2 BDL 1.1 BDL 4.8BJ 2.6J BDL BDL BDL 0.27J BDL BDL BDL BDL 0.33J BDL BDL BDL BDL BDL BDL BDL BDL 10Barium980B960B1,200 1,000 1,600 940 850 1,100 550 900 310B 970 1,500 670B 260 510 250 480 550 500 280 300 120 350 160 170 180 280 280 250 700 Beryllium 1.4B 0.81B 0.79 2.4 1.7 1.5 1.2 2.1 1.3 1.4 0.86 4.3 12 1.5 0.54 2.2 1.3 1.3 1.8 1.6 0.56 0.72J 0.55 1.2 0.66 0.43 0.68 0.92 0.72 0.67 4Cadmium0.74 0.71 2 1.7 0.4 0.95 0.78 2.3 .098J 0.82 1.3 2.1 1.8 0.59 1.3 1.4 1.4 0.58 0.86 0.33J 0.15J 0.41J BDL 0.23J 0.83 0.13J 0.83 0.43J 0.13J 0.63 2Cobalt58B60B72585163595017142.5J 13 14 5.3 0.86J 6.6 1.5J 3.4J 11 7 BDL 0.69J BDL 1.3J BDL BDL BDL BDL BDL BDL 1Copper121819204.8B 5.7 2.1 4 2.4 2.6B 2.2B 13B 18 2.8 1.6 6.1 4.3 1.2 5.8 3J BDL 20.0 2.2J 1.4J 2.7J 1.6J 1.4J BDL BDL BDL 1,000 Chromium 1.4J BDL BDL 2.8J BDL 5.7 3BJ BDL 2.4J 0.87J 0.95J 6.7 7.3 0.91J 0.99J BDL 2.8J BDL 1.7J 1.8J 1.3J 0.58J 2.1J 1.4J 2J 1.7J BDL BDL BDL BDL 10Lead3B0.87J 2.7 16 2 BDL 2.5 2.7 5.5 0.5J 1.9B 25 91 3.6B 0.81J 11 7.7 1.1 7.1 3.2 0.45J 0.79J 2.3 1.8 3 1.6 1.8 1.4 0.61J 0.37J 15Mercury*NT NT NT BDL NT NT NT BDL NT NT NT 0.28B NT NT NT 0.079J NT NT NT BDL NT NT NT 0.16JB NT NT NT 0.21 0.2 BDL 1 Nickel 14 13 15 53 3.7J 13 11 13 4.9J 3.7BJ 1.3J 4.6J 3.8J 1.9J 1.8J 2.4J 1.1J 1.2J 3.1J 2.3J BDL BDL BDL BDL 1.3J BDL BDL BDL BDL BDL 100 Selenium 0.33J BDL .34J 0.37J .41J BDL .34BJ BDL BDL BDL BDL BDL BDL 0.26J BDL BDL BDL BDL 1.3J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20Silver0.36J 0.4J .078J 0.94BJ .092J BDL 0.13J BDL .053J BDL BDL BDL BDL BDL 0.44J BDL 0.67J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20Thallium.21BJ 0.13BJ BDL 0.28J .32J 0.15J 0.14J 0.19J 0.19J BDL .083J 0.5 0.47J 0.19J BDL 0.29J 0.15J 0.11J 0.2J 0.13J BDL 0.12J BDL BDL BDL BDL BDL BDL BDL BDL 2 Vanadium 5.4 1.5J 5.1 19B 2.9J 7.5 3.2J 4J 4.5J BDL BDL 26 53 5B 1.5J 11J 9.7B 3.5BJ 8.7 6.4B BDL 0.57J 3.6J 2.5J 4.1J BDL BDL BDL BDL BDL 7Zinc382326110265355130B45B34B27B4104302602116030B1104635111514B171712101412141,000alpha-BHC*NT NT NT BDL NT NT NT BDL NT NT NT .024JP NT NT NT .0078JP NT NT NT BDL NT NT NT BDL NT NT NT NT NT NT 0.006 beta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT .029JP NT NT NT .017JP NT NT NT .032JP BDL NT BDL BDL BDL NT BDL NT BDL NT 0.02 bis (2-E) P*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 3delta-BHC*NT NT NT BDL NT NT NT BDL NT NT NT .0086JP NT NT NT .0015JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.019gamma-BHC*NT NT NT BDL NT NT NT BDL NT NT NT .013J NT NT NT .0035JP NT NT NT .04P NT NT NT BDL NT NT NT BDL NT NT 0.03 t-Chlordane*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .011J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.14,4-DDD*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0021JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.14,4-DDT*NT NT NT BDL NT NT NT BDL NT NT NT 0.017J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.1Dieldrin*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0039JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.002 Endosulfan I*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0022JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40ES*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0023J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40MOC*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT .0038JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 Di-n-BP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 700Di-n-OP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 100Endrin*NT NT NT BDL NT NT NT BDL NT NT NT .014JP NT NT NT .0023BJP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 23&4-MP*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 Phenol*NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 30Sulfide*BDL NT BDL NT BDL 640J BDL BDL BDL NT BDL 2,100 BDL NT 800J BDL 800J NT BDL BDL BDL NT BDL BDL BDL NT 1,100 BDL BDL NT NSAldrin*NT NT NT BDL NT NT NT BDL NT NT NT .014JP NT NT BDL .006JP BDL NT BDL .025JP BDL NT BDL BDL BDL NT BDL BDL BDL NT 0.002 HE*NT NT NT BDL NT NT NT BDL NT NT NT .012JP NT NT NT BDL NT NT NT .021J NT NT NT BDL NT NT NT BDL NT NT 0.004 Notes:Only historical groundwater constituents detected are presented.Reference associated groundwater monitoring report for analytical methods and detection limits. BDL = below detection limit; NT = not tested; NS = no standard CD=carbon disulfide;CB = chlorobenzene; CA = chloroethane;DCB = dichlorobenzene; DCA = dichloroethane; DCFM = dichlorodifluoromethane; DCE = dichloroethene; DCP = dichloropropane; EB = ethylbenzene; ES = endosulfan sulfate; bis (2-E) P = bis (2-ethyhexyl) phthalate; IBA = isobutyl alcohol; MC = methylene chloride; MI = methyl iodide; PCE = tetrachloroethene; TCE = trichloroethene; VC = vinyl chloride; BP = butyl phthalate; OP = octylphthalate TCA = trichloroethane; TCB = trichlorobenzene; MP = methylphenol; MOC = methoxychlor; HE = heptachlor epoxide; * = denotes Appendix II constituent, remaining constituents are Appendix I NCGPS = North Carolina Groundwater Protection Standard; bold and shade denotes above established NCGPSdata presented in micrograms per liter (ug/l); B = detected in method blankJ = estimated result <PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards dated April 1, 2022, J-flagged groundwater data exceeding the standard does not constitute an exceedance.P = The RPD between to GC columns exceeds 40% (results suspect) TABLE 6h HISTORICAL GROUNDWATER ANALYTICAL RESULTS MW-11 GASTON COUNTY UNLINED LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA Constituent (ug/1)Sampling Date NCGPS 11/94 2/95 3/2/95 3/7/95 5/95 9/95 3/96 9/96 3/97 9/97 4/98 9/98 5/99 9/99 5/00 12/00 4/01 10/01 4/02 10/02 4/03 10/03 4/04 10/04 4/05 10/05 5/06 11/06 5/07 11/07 6/08 Acetone BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7.6 BDL BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 6,000 Benzene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4 BDL BDL 14 BDL 7.4 7.5 NT NT NT NT 8.6 NT NT NT NT NT NT NT NT NT 1 Chloroethane BDL BDL BDL BDL BDL BDL BDL BDL 4 BDL BDL BDL BDL 12 4.3 5.3 3.5 NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 3,000 1,1-Dichloroethane BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 8 3.9 4.6 4.6 NT NT NT NT 3.8 NT NT NT NT NT NT NT NT NT 6 1,4-Dichlorobenzene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7 5 5.2 5 NT NT NT NT 5.5 NT NT NT NT NT NT NT NT NT 6 cis-1,2-Dichloroethene BDL BDL BDL BDL BDL BDL BDL BDL BDL 5.3 10.3 7.5 BDL 21 12 9.8 BDL NT NT NT NT 12 NT NT NT NT NT NT NT NT NT 70 Ethylbenzene BDL BDL BDL BDL BDL BDL BDL BDL 4 9.6 10.3 5.2 BDL BDL 13.9 23.5 11.3 NT NT NT NT 4.2 NT NT NT NT NT NT NT NT NT 600 Methylene Chloride BDL BDL BDL BDL BDL BDL BDL BDL 4 15 25.8 13 BDL 20 6.7 7.5 6.5 NT NT NT NT 6.8 NT NT NT NT NT NT NT NT NT 5 Styrene BDL BDL BDL BDL BDL BDL BDL BDL 9 BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 100 Sulfide *NT NT NT NT BDL NT NT NT BDL NT 1,200 NT BDL NT BDL NT BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT NS Tetrachloroethene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6 5.4 5.2 4.8 NT NT NT NT 3.2 NT NT NT NT NT NT NT NT NT 0.7 Toluene BDL BDL BDL BDL BDL BDL BDL BDL 18 43 37.4 14 BDL BDL 50.2 59.7 41.6 NT NT NT NT 10 NT NT NT NT NT NT NT NT NT 600 Trichloroethene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.5 2.5 2.7 NT NT NT NT 2 NT NT NT NT NT NT NT NT NT 3 Xylene (total)BDL BDL BDL BDL BDL BDL BDL BDL 10 37 52.8 57.4 BDL 140 160 240 175 NT NT NT NT 180 NT NT NT NT NT NT NT NT NT 500 Carbon Disulfide BDL BDL BDL BDL BDL BDL BDL BDL 4 BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 700 Vinyl Chloride BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.5 BDL 4.8 NT NT NT NT 2.5 NT NT NT NT NT NT NT NT NT 0.03 Barium 100 542 589 136 172 106 BDL 424 440 250 1,000 240 170 BDL 162 292 257 NT NT NT NT 270 NT NT NT NT NT NT NT NT NT 700 Beryllium BDL 4 7 BDL BDL BDL BDL 5.11 2 1 11 BDL BDL BDL BDL BDL BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 4 Cadmium BDL BDL 3 BDL BDL BDL BDL BDL 4 1 23 BDL BDL 3 BDL 3 1 NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 2 Cobalt BDL 17 20 BDL BDL BDL BDL BDL BDL BDL 35 BDL BDL BDL BDL BDL BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 1 Copper BDL 68 73 14 17.8 BDL BDL 43.8 BDL 10 86 BDL BDL BDL BDL 16 BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 1,000 Chromium BDL 20 22 3 BDL BDL BDL 20 4 2 52 BDL BDL BDL BDL 7 BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 10 Lead BDL 51 128 7 BDL 3.7 BDL 46.8 10 7 120 7.5 BDL BDL BDL 12 BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 15 Mercury*NT NT NT NT BDL NT NT NT BDL NT BDL 0.29 BDL NT BDL BDL BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 1 Nickel BDL 20 20 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 100 Thallium BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 BDL BDL BDL BDL BDL BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 0.28 Vanadium BDL 80 90 BDL BDL BDL BDL 82.2 9 8 310 BDL BDL BDL BDL 25 BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 0.3 Zinc 420 254 273 49 91.6 28.6 BDL 273 10 63 570 BDL BDL 95 BDL 87 23 NT NT NT NT 35 NT NT NT NT NT NT NT NT NT 1,000 3&4 Methylphenol*NT NT NT NT BDL NT NT NT BDL NT BDL BDL BDL NT BDL BDL BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 40 Aldrin*NT NT NT NT BDL NT NT NT BDL NT BDL BDL BDL NT BDL BDL BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 0.002 beta-BHC*NT NT NT NT BDL NT NT NT BDL NT BDL BDL BDL NT BDL BDL BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 0.019 Cyanide*NT NT NT NT BDL NT NT NT BDL NT BDL NT 2 NT BDL NT BDL NT NT NT NT BDL NT NT NT NT NT NT NT NT NT 70 Notes: Groundwater samples were analyzed for Appendix I or Appendix II constituents.* = denotes Appendix II constituent, remaining constituents are Appendix I.Only historical groundwater constituents detected are presented. Reference associated groundwater monitoring report for analytical methods and detection limits. BDL = below detection limit NT = not tested; NS = no standardNCGPS = North Carolina Groundwater Protection Standardbold and shade denotes above established NCGPS data presented in micrograms per liter (ug/l) J = estimated result <PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards (primary standard used to establish NCGPSs) dated April 1, 2013, J-flagged groundwater data exceeding the standard does not constitute an exceedance. TABLE 6i HISTORICAL GROUNDWATER ANALYTICAL RESULTS MW-19 GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA Constituent (ug/1)Sampling Date NC 10/99 12/99 4/01 10/01 4/02 10/02 4/03 10/03 4/04 10/04 4/05 10/05 5/06 11/06 5/07 11/07 3/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 8/21 12/21 8/22 12/22 GPS Acetone BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3J 2.9J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700 Carbon Disulfide BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2 BDL BDL BDL BDL 1.1 BDL BDL 0.37BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 700 DCFM*NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL NT NT 0.2J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 1,000 1,1-Dichloroethane BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.94J 0.3J 0.36J BDL 0.45J 0.39J 0.26J 0.15J BDL 0.21J BDL BDL 0.15J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6 1,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL NT BDL BDL BDL BDL 3 Tetrachloroethene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.42J 0.42J 0.52J 0.54J 0.47J 0.34J BDL BDL BDL 0.17J BDL BDL 0.22J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.7 Trichloroethene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.2J 0.2J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 Vinyl Chloride BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.52J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.03 Antimony BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.15J 0.4BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Arsenic BDL 8 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.68J BDL 0.38J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.23J BDL BDL BDL BDL BDL BDL BDL BDL 10 Barium BDL 471 55 36 36 55 93 49 48 50 58 44 58 190 48 69B 48B 87B 67 43 73 37 36 42 37 42 35B 50 39 36B 41 44 33 37 36 34 38 41 49 35 130 37 44 37 81 33 700 Beryllium BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.14J 0.24J 0.059J 0.46B .089J .032J 0.36J BDL .076J .057J .056J BDL 0.04J 0.14J 0.085J 0.1J 0.12J 0.2J BDL BDL BDL BDL BDL 0.13J 0.2J BDL 0.8 BDL 0.16J 0.16J 0.57 BDL 4 Cadmium 1 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.14 0.28 0.065J 0.4 0.29 .094J 0.52 BDL 0.18 BDL 0.12 1.6 0.19 0.65 0.18 0.21 0.27 0.74 0.24 0.28 0.41J 0.36J 0.27J0.51J BDL 0.15J BDL BDL 0.16J 0.18J 0.25J 0.16J 2 Chromium BDL 17 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.5J 2.7J 3.6J 3.3J 1.1J 1.2J 2.7J 1.2J BDL 1.4J 1.2J 2.5J 1.8J 2.2J 1.7J 1.9J 2J 2J 1.5J 0.93J 1.5J 2.5J 2.4J 1.8 2.7J 2.7J 3.6J 2.2J 1.7J 1.7 3.3J 2J 10 Cobalt BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.5J 0.49J 0.27J 1.2BJ 0.32J .058J 0.75J BDL .047J .064J .054J BDL 0.051J 0.12J 0.16J 0.041J BDL 0.34J BDL BDL BDL BDL BDL 0.1J BDL BDL 1.5J BDL BDL BDL BDL BDL 1 Copper BDL 21 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2 2.3 2 3.8 1.5 0.35J 2B 0.32J BDL 0.3J 0.49J 4.6B 0.64BJ 1.6B 1 0.56J 0.78J 1.6 0.39J 0.65J 0.94J 0.84J BDL 1.1J BDL BDL 3.7J BDL BDL BDL 2.5J BDL 1,000 Lead 14 25 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 10 0.75J 0.78J 0.46J 2.5 0.64J .069J 1.9 BDL BDL .092J .053J 0.18J 0.14BJ 0.34J 0.2J 0.22BJ 0.34J 0.7J BDL 0.28J 0.31J BDL 0.26J0.42J 0.99J BDL 5.1 BDL 0.42J 0.37J 3.3 BDL 15 Nickel BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.58J 0.83J 0.79J 1.1J BDL BDL 0.64J BDL BDL BDL 0.28J 0.8BJ BDL 0.44J 0.31J BDL 1.3J 0.67J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100 Silver BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.035J 0.2J 0.037J 0.15J 0.24J .04BJ 0.11J BDL BDL BDL .064J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Selenium BDL 6 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.5J 0.71J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Thallium BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.094J BDL 0.11BJ BDL BDL 0.097J BDL BDL BDL BDL 2.9J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.16J BDL BDL BDL BDL BDL 2 Vanadium BDL 74 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 12 BDL 2 BDL 6.9 3.5J 2.5BJ 5.3 BDL 1.9J 2.1J 1.6J BDL BDL 2.5J 2J 2.7BJ 1.9J 2.6J 3.1BJ 3.5BJ 2.1J 3.6BJ BDL 0.64J BDL BDL 10 BDL BDL BDL 6.7 BDL 7 Zinc 89 166 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 30 8.5BJ 12 5.9J 23 8.4J 3J 13 2.2J BDL 5.2BJ 5.4BJ 9.4BJ 7.8BJ 25 17 15 5.9J 18 5.3BJ 9.8J 6.8J 4.7J 3.1J 7J 6.6BJ BDL 22 2.7J 2.8J 3.3J 17 2.5J 1,000 Aldrin*NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL .012JP NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT 0.002 bis (2-E) P*NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL NT NT 2.6J NT NT NT BDL NT NT NT 4.6J NT NT NT 2J NT NT NT 1.5J NT NT NT 0.74J NT NT NT BDL NT NT 3 3&4 Methylphenol*NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 40 Mercury*NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT 0.1 NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 1 beta-BHC*NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL BDL NT BDL BDL BDL NT BDL BDL BDL NT 0.02 gamma-BHC*NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL NT NT BDL NT NT NT .0023J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT 0.03 Sulfide*NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT 800J NT BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL NT BDL 1,000 BDL NT BDL 870J BDL NT BDL BDL BDL NT BDL BDL BDL NT NS Notes: Groundwater samples were analyzed for Appendix I or Appendix II constituents. * = denotes Appendix II constituent, remaining constituents are Appendix I. Only historical groundwater constituents detected are presented. Reference associated groundwater monitoring report for analytical methods and detection limits. DCFM = dichlorofluoromethane; bis(2-E) P = bis (2-ethylhexyl) phthalate BDL = below detection limit NT = not tested; NS = no standard NCGPS = North Carolina Groundwater Protection Standard bold and shade denotes above established NCGPS data presented in micrograms per liter (ug/l) B = detected in method blank; P = The RPD between two GC columns exceeds 40% (results suspect) J = estimated result <PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards (primary standard used to establish NCGPSs) dated April 1, 2022, J-flagged groundwater data exceeding the standard does not constitute an exceedance. TABLE 6j HISTORICAL GROUNDWATER ANALYTICAL RESULTSMW-21GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE DALLAS, NORTH CAROLINA3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINAConstituent (ug/1)Sampling Date NCGPS 3/08 12/08 6/09 11/09 4/10 11/10 5/11 12/11 5/12 12/12 5/13 12/13 5/14 12/14 5/15 12/15 5/16 12/16 7/17 12/17 6/18 12/18 6/19 12/19 8/20 12/20 Acetone BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.9J BDL BDL 3.7J BDL 5.4 BDL BDL BDL abd 6,000 Benzene 1.8 1.5 1.9 1.5 1.3 1.9 1.4 1.7 2.1 2.6 2.3 2.9 2.9 3.3 2.2 2.6 2.9 4.5 3.2 2.9 2.4 2.9 1.5 2 2.3 abd 1Carbon Disulfide 0.54J BDL BDL 0.15J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL abd 700ChlorobenzeneBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDL0.39J 0.39J 0.39J BDL 0.32J 0.31J 0.56J BDL BDL BDL BDL BDL BDL BDL abd 50 1,4-Dichlorobenzene 0.54J BDL 0.75J BDL 0.75J 1.1 0.81J BDL 0.91J 1.3 1.3 2 2.1 2.3 1.5 1.6 1.7 3.4 2 1.6 1 1.8 1.2 2.6 6.3 abd 6 Dichlorodifluoromethane*BDL NT NT 0.33J NT NT NT BDL NT NT NT 0.36J NT NT 0.89J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL abd 1,0001,1-Dichloroethane 1 0.75J BDL 0.77J 0.66J 1 0.64J 0.63J 0.85J 0.99J 0.92J 1.1 1.1 1.2 BDL 1.1 1.4 1.7 1.9 2.3 1.9 2.8 1.5 2.3 1.9 abd 6 1,1-Dichloroethene BDL BDL BDL BDL BDL 0.97J BDL BDL BDL 0.19J 0.19J 0.26J 0.39J 0.25J BDL 0.42J 0.33J BDL BDL BDL BDL BDL BDL 0.55J BDL abd 7 cis-1,2-Dichloroethene 3.1 2.2 2.4 2.2 2 2.6 2 2.5 3 3.7 3.5 4.7 4.3 4.9 3.3 3.9 4.9 6.9 5.1 5.6 4.4 6.5 3.1 4.6 4.8 abd 701,4-Dioxane NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT BDL BDL BDL BDL abd 3 Methylene Chloride 2.3 1.9 1.4 2.3 1.5 2.8 2.4 BDL 2.6 BDL 3.4 4.8 3.6 4.3 3.1 3.5 4.5 6.6 6.3 7.4 6.6 5.8 1.3 4.5 5 abd 5 Styrene 0.2J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.13J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL abd 100Tetrachloroethene2.4 1.5 1.6 1.2 1.2 BDL 1.4 1.8 2 2.2 2.2 2.4 2.3 2.5 2.1 2.3 2.7 3.8 3.4 3.2 3.1 3.7 2.2 2.9 3.4 abd 0.7 1,1,1-Trichloroethane 0.21J BDL BDL BDL 0.1J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL abd 200 Trichloroethene 1.2 0.75J 0.91 0.62J 0.61J BDL 0.73J 0.96J 1 1.2 1.1 1.4 1.3 1.5 1.2 1.4 1.6 2.3 2.1 2.4 2.2 2.6 1.6 2.1 1.9 abd 3TrichlorofluoromethaneBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDLBDL1.3 BDL BDL BDL abd 2,000 Vinyl Chloride 0.43J 0.41J BDL 0.42J BDL BDL 0.38J BDL 0.34J 0.65J 0.7J 0.85J 0.85J 0.72J BDL 0.67J 0.73J 0.52J 0.79J BDL BDL BDL BDL 0.81J BDL abd 0.03 Xylenes 44 17 7.1 6.5 5.4 1.1 3.8 5.5 5.3 5.8 3.8 5.6 4.4 2.4 1 1.7 2.1 2.1 1 1.2 0.74J 0.65J 0.45J 0.91J 1.2 abd 500Antimony0.17BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.33BJ BDL BDL BDL BDL BDL BDL BDL BDL abd 1 Arsenic BDL 0.28J 0.52J BDL BDL BDL BDL 0.91J BDL 0.53J BDL BDL BDL BDL BDL 0.37J BDL 0.33J BDL BDL BDL 0.23J BDL BDL BDL abd 10 Barium 240B 150B 270 120 140 120 130 150 160 170 170B 280 210 210B 200 230 220 250 240 250 250 200 180 220 240 abd 700Beryllium1.6 0.61B 2.4 0.38J 0.78 0.58 0.55 0.58 0.55 0.53 0.51 1.7 0.76 0.69 0.58 1.3 0.49 0.76 0.45 0.67 0.43 0.46J 0.53 0.43 0.5 abd 4Cadmium0.093J 0.42 3 0.31 0.24 0.29 0.84 0.81 0.36 0.31 1.7 1.4 1.4 1.9 0.79 0.48 0.46 0.33 0.84 0.5 0.4J 0.29J 0.22J 0.21J BDL abd 2 Chromium 8.8 1.3J 9.6J BDL 1.3J BDL BDL BDL BDL 1.1J 0.67J 5.8 BDL 0.68J BDL 3.6J BDL BDL BDL BDL BDL BDL 1.5J BDL BDL abd 10Cobalt5.6 0.56BJ 3.9J 0.25J 0.67J 0.28J 0.33J 0.34J 0.18J 0.27J 0.3J 2.2J 0.56J 0.21J 0.31J 1.9J BDL BDL BDL 0.76J BDL 0.15J BDL BDL BDL abd 1Copper9.7 1.6 12 0.67J 2.1B 1.1 0.73J 1.2 0.84J 1.6B 1.5B 7.4B 1.9 2.4 1.7 4.6 0.62J 1.2 1J 2.1J BDL 0.7J 1.5J BDL BDL abd 1,000 Lead 8.9 1 12 0.33J 1.9 0.73 0.6J 0.61J 0.13J 0.69J 0.57BJ 6 1.5 0.54BJ 0.24J 4.5 0.26J 0.62J BDL 0.59J 0.3J 0.28J 0.71J 0.3J BDL abd 15Nickel4.7J 0.48J 3.8J BDL 0.47J BDL BDL 0.41J 0.36J 0.49BJ 0.35J 2.3J 0.94J 0.33J 0.74J 1.6J BDL BDL BDL BDL BDL BDL BDL BDL BDL abd 100SeleniumBDLBDLBDLBDLBDLBDL0.28BJ BDL BDL BDL BDL BDL 0.46J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL abd 20 Silver 0.075J 0.26J 0.086J 0.16BJ 0.047J BDL 0.12J BDL 0.2J BDL BDL BDL BDL BDL 0.27J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL abd 20 Thallium 0.28J 0.26BJ 0.37J BDL BDL BDL BDL BDL BDL BDL BDL 0.28J BDL BDL BDL 0.23J BDL BDL BDL BDL BDL BDL BDL BDL BDL abd 0.2Vanadium152.6J 16 2.3BJ 3.9J 1.6J 1.8J 2.3J BDL 3J BDL 14 2.6J 1.8BJ BDL 11 2.7BJ 3.4BJ BDL 3.7BJ BDL BDL BDL BDL BDL abd 0.3 Zinc 40 12 82 5.6J 12 8J 7.5J 9.1BJ 10B 10B 12B 150 83 84 15 76 6.1BJ 52 6.4J 8.8J 6.2J 6.3J 10B 5.5J 3.5J abd 1,000 bis (2-Ethylhexyl) Phthalate*BDL NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 1J NT NT NT BDL NT NT NT BDL NT abd 3Aldrin*BDL NT NT 0.037 NT NT NT 0.029 NT NT NT 0.049 NT NT 0.045 0.037 BDL NT BDL 0.05 0.058 NT 0.055 0.1 0.250 abd 0.002 beta-BHC*BDL NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.12 NT NT NT 0.016JP 0.025JP NT 0.02JP BDL BDL abd 0.019 delta-BHC*BDL NT NT BDL NT NT NT BDL NT NT NT 0.018J NT NT NT 0.0029JP NT NT NT BDL NT NT NT BDL NT abd 0.019gamma-BHC*BDL NT NT BDL NT NT NT 0.0042J NT NT NT 0.012JP NT NT NT 0.0043JP NT NT NT BDL NT NT NT BDL NT abd 0.03 trans-Chlordane*BDL NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.003JP NT NT NT BDL NT NT NT BDL NT abd NS Dieldrin*BDL NT NT BDL NT NT NT BDL NT NT NT 0.004JP NT NT NT BDL NT NT NT BDL NT NT NT BDL NT abd 0.002Endosulfan II*BDL NT NT BDL NT NT NT 0.0071JP NT NT NT 0.0022J NT NT NT 0.0042J NT NT NT BDL NT NT NT BDL NT abd 42 Endosulfan Sulfate*BDL NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.002JP NT NT NT BDL NT NT NT BDL NT abd 40 Endrin*BDL NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.0047BJP NT NT NT BDL NT NT NT BDL NT abd 2Heptachlor Epoxide*BDL NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT 0.0072JP NT NT NT BDL NT NT NT BDL NT abd 0.004Methoxychlor*BDL NT NT BDL NT NT NT 0.0031J NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT abd 40 3&4 Methylphenol*BDL NT NT BDL NT NT NT BDL NT NT BDL BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT abd 40Mercury*0.14 NT NT BDL NT NT NT 0.054BJ NT NT NT BDL NT NT NT BDL NT NT NT BDL NT NT NT BDL NT abd 1Sulfide*BDL NT BDL BDL BDL 9400 1500 BDL BDL NT BDL BDL 700J NT BDL BDL BDL NT BDL 750J BDL NT BDL BDL BDL abd NSNotes:Groundwater samples collected for Appendix I or Appendix II constituents.* = denotes Appendix II constituent, remaining constituents are Appendix I.Only detected groundwater constituents are presented.Reference associated groundwater monitoring report for analytical methods and detection limits.BDL = below detection limitNS = no standardNT = not testedNCGPS = North Carolina Groundwater Protection Standardbold and shade denotes above established NCGPSdata presented in micrograms per liter (ug/l)B = detected in method blankJ = estimated result <PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards (primary standard used to establish NCGPS's) dated April 1, 2013, J-flagged groundwater data exceeding the standard does not constitute an exceedance.P = The RPD between two GC columns exceeds 40% (results suspect)abd = MW-21 abandoned August 2020 MW-35 LOQ MDL Sampling Date NCGPS Constituents (ug/1)12/27/20 1/6/21 1/12/21 1/21/21 8/30/21 12/30/21 8/23/22 Appendix I VOCs (EPA 8260D) Benzene 1 0.4 7.5 7.3 7.3 7.5 7.1 5.8 6.2 1 Chloroethane 2 0.4 0.88J 0.82J 0.85J 0.79J 0.93J 0.58J 0.64J 3,000 1,4-Dichlorobenzene 1 0.4 1.3 1.2 1.3 1.3 1.2 1.1 0.98J 6 1,1-Dichloroethane 1 0.4 1.2 1.2 1.2 1.2 1.1 0.92J 0.98J 6 1,2-Dichloroethane 1 0.4 6.4 6.5 5.7 5.9 5.7 4.8 5.2 0.4 cis-1,2-Dichloroethene 1 0.4 9.3 9.1 9.3 8.9 9.2 7.8 9.2 70 Methylene Chloride 1 0.4 2 2 2.1 2 2.1 1.4 1.6 5 Tetrachloroethene 1 0.4 1.3 1.2 1 1.1 1.1 1.1 0.83J 0.7 Trichloroethene 1 0.4 1.3 1.3 1.1 1.2 1.2 1.1 0.9J 3 Vinyl Chloride 1 0.4 0.61J 0.63J 0.55J 0.52J 0.56J BDL BDL 0.03 Xylenes 1 0.4 5.1 5.2 5.3 5.4 3.8 3.8 3.5 500 1,4-Dioxane (EPA 8260D (SIM))3 1 BDL 3.5 BDL BDL BDL BDL BDL 3 Appendix I Metals (EPA 6020B) Barium 5 1.3 190 200 200 340 170 210 180 700 Beryllium 0.4 0.15 1.5 1.4 1.5 2.8 0.79 1.2 0.93 4 Cadmium 0.5 0.13 BDL 0.17J 0.23J 0.36J 0.3J 0.31J 0.17J 2 Chromium 5 1.3 BDL BDL 1.5J 2.5 BDL BDL BDL 10 Cobalt 5 1.3 1.3J BDL 1.5J 2.7J BDL BDL BDL 1 Copper 5 1.3 1.6J 2.4J 2.8J 7.5 BDL 1.6J 0.78J 1,000 Lead 1 0.25 1.8 1.8 3.1 8.9 BDL 2.1 BDL 15 Nickel 5 1.3 BDL BDL BDL 1.3J BDL BDL BDL 100 Thallium 0.5 0.15 BDL BDL BDL 0.24J BDL BDL 0.19J 2 Vanadium 5 2.5 3J 3.1J 4.3J 12 BDL BDL BDL 7 Zinc 10 2.5 12 11 16 35 3.5J 7.4J 5.2J 1,000 Mercury*0.2 0.091 NT NT NT NT NT BDL 0.18J 1 Naphthalene*0.2 0.05 NT NT NT NT NT BDL 0.084J 6 Aldrin*0.04 0.02 NT NT NT NT 0.37 BDL 0.3 0.002 alpha-BHC*0.04 0.015 NT NT NT NT NT BDL 0.022J 0.006 beta-BHC*0.04 0.015 NT NT NT NT 0.21P 0.079 P 0.018JP 0.019 4,4'-DDT*0.04 0.02 NT NT NT NT NT BDL 0.02J 0.1 Notes: Groundwater samples were collected on above listed dates & were analyzed for Appendix I volatile organic compounds (VOCs) (plus 1,4-dioxane) by EPA Method 8260D; 1,4-Dioxane by EPA Method 8260D (select ion monitoring (SIM)); and Appendix I metals by EPA 6020B. Analyses by Pace Analytical Services, LLC (NC Certification No.: 329) in W. Columbia, SC. NCGPS=North Carolina Groundwater Protection Standard (April 11, 2022) BDL = Below Detection Limit; NT = not tested (dry) Bold and shade denotes above established NCGPS or NCSWWS (J-flagged data not considered) LOQ = limit of quantitation (aka: report limit (RL) or practical quantitation limit (PQL)) is the lowest quantitation limit attainable by the EPA method MDL = method detection limit is the lowest qualified limit (estimated result) attainable by the EPA method data presented in micrograms per liter (ug/l) B = detected in method blank J = estimated result <LOQ or PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards (primary standard used to establish NCGPS's) dated April 1, 2022, J-flagged groundwater data exceeding the standard does not constitute an exceedance). NT = not tested P = relative percent difference (RPD) between two GC columns exceeds 40% Appendix II TABLE 6k HISTORICAL GROUNDWATER ANALYTICAL RESULTS MW-35 GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA TABLE 7 STATISTICAL EVALUATION OF HISTORICAL GROUNDWATER DATA SECOND SEMI-ANNUAL 2022 GASTON COUNTY CLOSED UNLINED MSW LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD Downgradient Compliance Well Kruskal-Wallis Test (ANOVA) Upgradient Background Well: MW-1 (Appendix I VOCs & Metals (+ mercury), 1,4-Dioxane; & Appendix II Pesticides (aldrin & beta-BHC) & Sulfide MW-2 Benzene, Chloroethane, 1,4-Dichlorobenzene, 1,1-Dichloroethane, cis-1,2-Dichloroethene, Methylene Chloride, Tetrachloroethene, Trichloroethene, Xylenes, Barium, Cobalt, Nickel, Zinc MW-6 No Statistical Significance MW-7 Benzene, Chlorobenzene, Chloroethane, 1,1-Dichloroethane, 1,4-Dichlorobenzene, 1,4-Dioxane, Vinyl Chloride, Barium, Cadmium, Copper, Zinc MW-8 1,1-Dichloroethane, cis-1,2-Dichloroethene, Barium, Lead MW-9 Benzene, Chloroethane, 1,1-Dichloroethane, cis-1,2-Dichloroethene, Methylene Chloride,Tetrachloroethene, Trichloroethene, Xylenes, Barium, Cobalt MW-10/MW-10A Benzene, 1,4-Dichlorobenzene, 1,1-Dichloroethane, cis-1,2-Dichloroethene, Tetrachloroethene, Trichloroethene, Xylenes, Barium, Cobalt, Zinc MW-19 No Statistical Significance Notes: Statistical evaluation activities were conducted utilizing Grits/Stat v4.2 See historical groundwater analytical results presented in Table 6 for sampling dates and detected parameters utilized during the statistical evaluation. S These activities were conducted to determine if historical App I/II VOCs, metals, 1,4-dioxane, pesticides (aldrin & beta-BHC) and sulfide groundwater constituents detected at downgradient compliance wells MW-2,MW-6, MW-7,MW-8,MW-9,MW-10,MW-19 & MW-21 at the unlined landfill were statistically above groundwater data collected at upgradient background well MW-1. ANOVA = analyses of variance DALLAS, NORTH CAROLINA APPENDIX A NCSWS Memorandums – PFAS Monitoring – March 13, 2023 and July 17, 2023 APPENDIX B Historical Groundwater Analytical Results – MW-B, MW-BD, MW-15 & MW-16 TABLE 7b HISTORICAL APPENDIX I GROUNDWATER ANALYTICAL RESULTS MW-B GASTON COUNTY UNIT I LINED MSW SUBTITLE D LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELHIA CHURCH ROAD DALLAS, NORTH CAROLINA Date Appendix I VOCs SIM Appendix I MetalsSampledABCACD1,2-1,4-1,1-1,1-cis-1,2-MI PCE TCE VC 1,4-Ag As Ba Be Cd Cr Co Cu Ni Pb Se Sb Tl V ZnDCBDCBDCADCEDCEDioxane 6/23/98 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 370 BDL BDL BDL BDL 5 BDL 4 BDL BDL BDL BDL 26 7/10/98 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL 2 BDL BDL BDL BDL BDL 15 BDL BDL BDL 10 BDL 7/23/98 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 8/10/98 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL3/10/99 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL10/1/99 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL3/10/00 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 510 BDL 1 BDL BDL BDL BDL BDL BDL BDL BDL BDL 9312/7-11/00 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 355 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL4/6/01 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 275 BDL BDL BDL BDL BDL BDL BDL 6 BDL BDL BDL BDL10/10/01 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 369 BDL BDL BDL BDL BDL BDL 7 BDL BDL BDL BDL 544/16/02 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 218 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL10/1/02 BDL BDL BDL BDL BDL BDL 9.1 BDL BDL BDL BDL BDL BDL NT BDL BDL 340 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 21 4/11/03 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL 9.8 610 7.2 BDL 15 BDL 31 BDL 43 BDL BDL BDL 54 130 10/2/03 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL 10 580 6.2 BDL 11 BDL 31 BDL 37 BDL BDL BDL 49 120 4/5/04 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL 13 690 BDL BDL 15 BDL 53 BDL 60 BDL BDL BDL 85 200 10/14/04 BDL BDL BDL BDL BDL BDL 5 BDL BDL BDL BDL BDL BDL NT BDL 9.7 780 7.3 BDL 15 BDL 39 BDL 41 BDL BDL BDL 62 150 4/12/05 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 510 BDL BDL BDL BDL BDL BDL 8.7 BDL BDL BDL BDL 3110/25/05 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL 8.1 600 5.2 BDL 8.7 BDL 26 BDL 29 BDL BDL BDL 44 1005/9/06 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 960 7.7 BDL 8.9 BDL 18 BDL 27 BDL BDL BDL 34 8111/25/06 BDL BDL BDL BDL BDL BDL 2.2 BDL BDL BDL BDL BDL BDL NT BDL 9.2 830 7.4 BDL 18 BDL 38 BDL 41 BDL BDL 0.71 62 1605/30/07 4.5J BDL BDL BDL BDL BDL 2.2 BDL 1.3 BDL BDL BDL BDL NT 0.17J BDL 390 0.29J 0.59 1.2J 0.74J 1.6 0.88J 1.5 BDL BDL 0.2J 2.5J 11B11/13/07 BDL 0.57J BDL BDL 0.93J 0.85J 6.4 BDL 2.6 BDL 0.83J 0.94J BDL NT 0.19J BDL 570B 0.63 0.32 1.8J 1.3J 3.6 1.4J 3 1.7 0.14J 0.23J 4.5J 216/1/08 BDL 1.2 BDL BDL BDL 2.2 13 0.39J 6.4 BDL 0.78J 2 BDL NT 0.3J 0.28J 480B 0.4B 0.70 1.3J 2.1BJ 4 0.74J 1.5B 0.28J BDL 0.25BJ 2.4J 1412/2/08 BDL 0.34J BDL BDL BDL 0.85J 5.7 BDL 2.3 BDL 0.68J 0.6J BDL NT 0.21J BDL 560B 0.42B 0.39 1.2J 0.97BJ 2.1 0.65J 1.8 BDL BDL 0.25BJ 2.2J 166/23/09 BDL 0.69J BDL BDL BDL 1.3 4.8 BDL 3.3 BDL 0.9J 0.86J BDL NT 0.019J 0.56J 630 0.22J 0.41 BDL 0.44J 0.98J 0.43J 0.33J BDL BDL 0.24J 4.5J 8.8J 11/19/09 BDL BDL BDL BDL BDL BDL 2.6 BDL 1.3 BDL 0.24J 0.18J BDL NT 0.28BJ BDL 620 0.2J 0.5 BDL 0.59J 1.6 0.58J 0.55J BDL BDL 0.17J BDL 8.4 4/12/10 BDL BDL BDL BDL BDL BDL 0.66J BDL 0.32J BDL BDL BDL BDL NT 0.072J 0.28J 350 0.27J 0.39 0.35J 0.38J 1.2B 0.48J 0.34J BDL BDL 0.15J BDL 8.2J 11/30/10 18J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 570 0.13J 0.32 BDL 0.55J 2.4 4.1J 0.51J 0.25J 1.5 0.17J BDL 11 5/27/11 BDL BDL BDL BDL BDL BDL BDL BDL 0.13J BDL BDL BDL BDL NT 0.082J BDL 550B 0.18J 0.5 BDL 0.77J 0.92J BDL 0.62J 0.44BJBDL 0.16J 1.6J 7.5J 12/6/11 BDL 0.72J BDL BDL BDL 1.6 6.3 BDL 3.5 BDL 0.5J 0.52J BDL NT 0.047BJ 2B 640 0.18J 0.56 0.37J 5.4 2.1 2.1J 0.41J BDL BDL 0.22J 2.7J 265/30/12 BDL 0.48J BDL BDL BDL 1.2 4.6 BDL 3 BDL 0.18J 0.25J BDL NT 0.2J BDL 670 0.5 0.51 0.69J 3J 2.9 1.9J 2.7 0.41J BDL 0.27J 3.5J 2612/16/12 BDL 0.16J BDL BDL BDL 0.38J 1.5 BDL 0.82J BDL BDL BDL BDL NT BDL 0.42J 850 0.81 0.96 1.7J 2J 6.1B 1.7BJ 5.6 BDL BDL 0.18J 7.4 32B5/20/13 BDL 0.73J BDL BDL BDL 2 7.1 BDL 4 BDL 0.28J 0.49J BDL NT 0.017J BDL 470B 0.2J 0.36 1.4J 1.3J 2.3B 0.86J 0.7BJ BDL BDL 0.18J BDL 11B11/21/13 BDL 0.85J 0.49J BDL BDL 2.3 11 0.26J 5.6 BDL 0.83J 0.93J BDL NT BDL BDL 660 0.25J 0.39 0.4J 0.7J 2.4B 0.99J 1 BDL 0.16J 0.25J 3.1J 3305/19/14 BDL 0.15J BDL BDL BDL BDL 1.7 BDL 0.8J BDL BDL BDL 0.13J NT 0.14BJ 0.48J 480 0.25J 0.25 BDL 0.31J 1.1 1.1J 0.3J 0.58J 0.11J 0.21J BDL 18012/17/14 BDL 0.48J BDL 0.4J BDL 1 5.6 BDL 2.4 BDL BDL 0.23J BDL NT 0.19BJ BDL 740B 0.13J 0.68 BDL 0.6J 2.2B 4.4J 0.34BJ BDL BDL 0.25J BDL 3005/15/15 BDL 0.4J BDL BDL BDL 1.4 4.7 BDL 2.5 BDL BDL BDL BDL NT 0.2J BDL 510 0.31J 0.54 BDL 1.1J 1.6 2.8J 0.61J BDL BDL 0.24J 1.8J 27 12/9/15 BDL 0.76J 0.37J BDL BDL 1.8 10 0.39J 4.3 BDL 0.38J 0.57J BDL NT BDL 0.27J 470 0.23J 0.44 BDL 0.34J 1.3B 1.4J 0.24J BDL BDL 0.21J 1.1J 100 5/11/16 1.7J 0.41J BDL BDL BDL 1.2 7.6 BDL 2.7 BDL BDL BDL BDL NT BDL BDL 360 0.31J 0.86 BDL BDL 1.6B 1J 0.26J BDL BDL 0.2J 2.8BJ 80B 12/14/16 2.1J BDL BDL 0.43J BDL 0.79J 4.5 0.43J 1.6 0.49J BDL 0.41J BDL NT BDL BDL 550B 0.35BJ 0.31 1.6J BDL 1.1B 6.7 0.67J BDL BDL 0.25J 3.5J 110 7/25/17 6.2J 0.97J BDL BDL BDL 2.3 14 BDL 5 BDL BDL 1.6 BDL NT BDL BDL 220 0.14J BDL BDL BDL 0.86J 2.1J BDL BDL BDL 0.19J BDL 5.6BJ 12/30/17 2.1J 0.94J BDL BDL BDL 2.1 16 BDL 6.5 BDL BDL 1.7 BDL NT BDL BDL 500 0.87 0.15J 21 2.4J 5.9 11 4.6 BDL BDL 0.43J 8 31 6/19/18 BDL 1 BDL BDL BDL 2.2 14 BDL 5.3 BDL BDL 0.46J BDL NT BDL BDL 260 0.2J 0.72 2.6J BDL 2.4J 3.1J 0.69J BDL BDL 0.3J BDL 1212/19/18 BDL BDL BDL BDL BDL BDL 1.4 BDL 0.26J BDL BDL BDL BDL BDL 0.078J 0.36J 290 0.34J 0.29J 0.81J 0.31J 32 3.6 0.26J BDL 0.2J 0.42J 0.12J 396/10/19 2J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 170 0.29J 0.37J BDL BDL 2.3J 2.3J BDL BDL BDL 0.24J BDL 15B12/6/19 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2J BDL BDL 76 0.36J 6.5 BDL BDL 2.4J 1.6J 0.77J BDL BDL 0.31J BDL 148/7/20 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7.1 BDL BDL 100 0.54 0.42J BDL BDL 1.3J BDL 0.33J BDL BDL 0.22J BDL 1312/26/20 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 14 BDL BDL 310 1 0.52 BDL BDL 1.6J 1.6J 0.93J BDL BDL 0.3J BDL 258/29/21 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.7J BDL BDL 54 0.35J 0.88 BDL BDL 1.7J 1.6J BDL BDL BDL 0.21J BDL 1112/31/21 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4.1 BDL BDL 51 0.15J 0.51 BDL BDL 1.4J BDL BDL BDL BDL 0.16J BDL 6.9J 8/22/22 BDL 0.5J 0.96J BDL BDL 0.58J 4.5 BDL 1 BDL BDL BDL BDL 4.2 BDL BDL 31 BDL 0.26J BDL BDL BDL BDL BDL BDL BDL BDL BDL 5.5J 12/30/22 BDL BDL BDL BDL BDL BDL 0.97J BDL BDL BDL BDL BDL BDL 2.4J BDL BDL 41 0.23J 0.37J BDL BDL 1.6J 1.4J BDL BDL BDL 0.26J BDL 5.8J NCGPS 6,000 1 3,000 700 20 6 6 7 70 700 0.7 3 0.03 3 20 10 700 4 2 10 1 1,000 100 15 20 1 2 7 1,000Notes: Groundwater samples collected by Buxton Environmental, Inc. and analyzed for Appendix I constituents.A = acetone; B = benzene; CA = chloroethane; CD = carbon disulfide; DCB = dichlorobenzene; DCA = dichloroethane; DCE = dichloroethene; MI = methyl iodide; PCE = tetrachloroethene; TCE = trichloroethene; VC = vinyl chloride; As = arsenic; Ba = barium; Be = beryllium;Cd = cadmium; Cr = chromium; Cu = copper; Co = Cobalt;Ni=nickel;Pb = lead Se=selenium;Sb=antimony;Tl = Thallium;V = vanadium;Zn = zincNCGPS=North Carolina Groundwater Protection Standard; Bold and shade denote above NCGPS; BDL=Below Detection LimitData presented in micrograms per liter (ug/l); B = detected in method blank J = estimated result <PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards (primary standard used to establish NCGPSs) dated April 1, 2022, J-flagged groundwater data exceeding the standard does not constitute an exceedance. TABLE 7c HISTORICAL APPENDIX I GROUNDWATER ANALYTICAL RESULTS MW-BD GASTON COUNTY UNIT I LINED MSW SUBTITLE D LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELHIA CHURCH ROAD DALLAS, NORTH CAROLINA Date SIMSampledABCDCA1,4-1,1-1,2-1,1-cis-1,2-1,2-MC PCE TCE VC 1,4-Ag As Ba Be Cd Cr Co Cu Ni Pb Se Sb Tl V Zn 3&4 Aldrin*beta- DCB DCA DCA DCE DCE DCP Dioxane MP*BHC* 6/23/98 BDL BDL BDL BDL BDL 14 BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 180 BDL BDL BDL 4 4 BDL BDL BDL BDL BDL BDL 16 NT NT NT7/10/98 BDL BDL BDL BDL BDL 18 BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT7/23/98 BDL BDL BDL BDL BDL 25 BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT8/10/98 BDL BDL BDL BDL BDL 27 BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT3/10/99 BDL BDL BDL BDL BDL 30 BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT10/1/99 BDL BDL BDL BDL BDL 34 BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT 3/10/00 BDL BDL BDL BDL BDL 20 BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL 1 BDL BDL BDL BDL BDL BDL BDL BDL BDL 100 NT NT NT 12/7-11/00 BDL BDL BDL BDL BDL 20.4 BDL BDL 2.4 BDL BDL BDL 2.4 BDL NT BDL 9 377 BDL BDL 6 BDL 23 BDL 20 5 BDL BDL 29 91 NT NT NT 4/6/01 BDL BDL BDL BDL BDL 10.9 BDL BDL BDL BDL BDL BDL 5.1 BDL NT BDL BDL 250 BDL BDL BDL BDL BDL BDL 4 BDL BDL BDL BDL 37 NT NT NT 10/12/01 BDL BDL BDL BDL BDL 9.3 BDL BDL 2.2 BDL BDL BDL BDL BDL NT BDL BDL 220 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 46 NT NT NT 4/16/02 BDL BDL BDL BDL BDL 16.2 BDL BDL 2.3 BDL BDL BDL 2.1 BDL NT BDL BDL 230 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 41 NT NT NT 10/1/02 BDL BDL BDL BDL BDL 11 BDL BDL BDL BDL 7.9 BDL BDL BDL NT BDL BDL 300 BDL BDL BDL BDL 13 BDL 13 BDL BDL BDL 15 76 NT NT NT 4/11/03 BDL BDL BDL BDL BDL 12 BDL BDL 2 BDL BDL 1.8 1.8 BDL NT BDL BDL 330 BDL BDL BDL BDL BDL BDL 12 BDL BDL BDL BDL 54 NT NT NT 10/2/03 BDL BDL BDL BDL BDL 12 BDL BDL 2.4 BDL BDL BDL BDL BDL NT BDL BDL 290 BDL BDL BDL BDL BDL BDL 4.1 BDL BDL BDL BDL 29 NT NT NT 4/5/04 BDL BDL BDL BDL BDL 14 BDL BDL 3.2 BDL BDL 2 1.8 BDL NT BDL BDL 340 BDL BDL BDL BDL 22 BDL 11 BDL BDL BDL 19 84 NT NT NT10/14/04 BDL BDL BDL BDL BDL 14 BDL BDL 2.6 BDL BDL 2.5 2.1 BDL NT BDL BDL 290 BDL BDL BDL 10 14 BDL 8.7 BDL BDL BDL 14 61 NT NT NT4/12/05 BDL BDL BDL BDL 1 12 BDL BDL 3.7 BDL BDL 1.8 1.8 BDL NT BDL BDL 250 BDL 1.4 BDL BDL BDL BDL BDL BDL BDL BDL BDL 34 NT NT NT10/25/05 BDL BDL 7.8 BDL 1.1 13 BDL BDL 3.7 BDL BDL 2.4 2 BDL NT BDL BDL 260 BDL BDL BDL BDL BDL BDL 4.4 BDL BDL BDL 11 54 NT NT NT5/9/06 BDL BDL BDL BDL 1.2 11 BDL BDL 3.2 BDL BDL 2.5 2.1 BDL NT BDL BDL 240 BDL 2.2 BDL BDL BDL BDL 5.4 BDL BDL BDL 12 53 NT NT NT11/25/06 BDL 1.1 BDL BDL 1.3 14 BDL BDL 3.4 BDL BDL 2.9 2.5 BDL NT BDL BDL 160 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 27 NT NT NT5/30/07 2.2J 0.9J BDL BDL 1.3 14 BDL BDL 3.7 BDL BDL 2.7 2.3 BDL NT 0.24J BDL 200 0.78 0.73 2.2J 5.9 5.4 2.2 5.5 BDL 0.097J 0.3J 7 34 NT NT NT11/13/07 BDL 0.91J BDL BDL 1.3 14 BDL BDL 3.4 BDL BDL 2.4 2 0.24J NT 0.15J BDL 160B 0.36J 0.34 0.5J 5 0.69J 1.2J 0.5J BDL 0.13J 0.17J BDL 11 NT NT NT3/19/08 BDL 0.55J 11 BDL 1.2 7.7 BDL BDL 2.1 BDL BDL 1.9 1.4 BDL NT 0.16J BDL 130B 0.29J 0.31 1.6J 4.3J 1.2 2J 0.29J BDL 0.26BJ0.17J BDL 12 NT NT NT12/2/08 BDL 0.96J BDL BDL 1.7 12 BDL 0.43J 4 0.21J BDL 2.8 2.5 BDL NT 0.11J 0.42J 140B0.33BJ 0.24 0.5J 3.9BJ 0.71J 0.81J 0.56J BDL BDL 0.22BJ BDL 13 NT NT NT6/23/09 BDL 0.98J BDL BDL 1.6 13 BDL 0.79J 3.2 BDL BDL 3.4 2.4 BDL NT BDL 0.54J 170 0.74 1.20 0.47J 4.6J 5.5 1.1J 4.7 BDL BDL 0.18J 5.9 35 NT NT NT11/24/09 BDL BDL 0.12BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.036BJ BDL 130 0.22J 0.095J BDL 3.8J 0.41J 3.5J 0.2J BDL BDL 0.077J BDL 6.6J NT NT NT4/12/10 BDL 0.65J 0.38J BDL 1.4 9.6 BDL 0.25J 3.2 BDL BDL 1.6 1.2 BDL NT 0.1J BDL 140 0.37J 0.35 BDL 4J 0.94J 0.67J 0.63J BDL 0.23J 0.19J BDL 10 NT NT NT11/23/10 BDL 0.97J BDL BDL 1.9 11 BDL 0.94J 4.4 BDL BDL BDL BDL BDL NT BDL BDL 170 0.3J 0.52 BDL 5 0.82J 0.79J BDL BDL BDL BDL BDL 9J NT NT NT5/26/11 BDL 0.73J BDL BDL 1.5 8.4 BDL 0.24J 2.8 BDL BDL 1.7 1.5 BDL NT 0.046J BDL 160 0.28J 0.49 BDL 4.3J BDL BDL 0.37J 0.44BJ BDL BDL BDL 7.8J NT NT NT 12/9/11 BDL 0.84J 3 BDL 1.6 9.2 BDL BDL 2.9 BDL BDL 2.2 2.1 BDL NT BDL 0.63J 170 0.22J 0.12 BDL 3.8J 0.23J 0.74J 0.17J BDL BDL BDL BDL 8.9BJ NT NT NT 5/31/12 BDL 0.92J BDL BDL 1.7 11 BDL BDL 3.2 BDL BDL 2 2 BDL NT 0.14J BDL 180 0.15J 0.25 BDL 4J 0.64J 1.2J 0.2J BDL BDL 0.12J BDL 15B BDL NT NT 12/16/12 BDL 0.85J BDL BDL 1.7 9.9 BDL BDL 3.2 BDL BDL 1.6 1.9 BDL NT BDL 0.32J 200 0.069J 0.48 0.5J 4.3J 1.5B 1.4BJ 0.68J BDL BDL BDL BDL 12B NT NT NT 5/22/13 BDL 0.86J BDL BDL 1.6 12 BDL 0.28J 3.2 BDL BDL 1.6 2.2 BDL NT BDL BDL 230B 0.55 1.9 1.2J 5 6.3B 2J 4.4B BDL BDL 0.21J BDL 33B BDL NT NT 11/21/13 BDL 0.91J BDL BDL 1.8 13 BDL 0.32J 3.8 BDL BDL 0.86J 2.9 BDL NT BDL BDL 180 0.26J 0.58 0.44J 3.7J 2B 1.3J 1.1 BDL BDL 0.12J BDL BDL NT NT NT 5/20/14 BDL 0.81J BDL BDL 1.6 11 BDL 0.25J 3.1 BDL BDL 0.65J 2.5 BDL NT 0.03BJ 0.3J 200 0.22J 0.35 BDL 4.4J 0.65J 1.2J 0.43J BDL BDL 0.19J BDL 78 NT NT NT 12/27/14 BDL 0.99J BDL BDL 1.9 13 BDL 0.26J 4.1 BDL BDL 0.46J 2.9 BDL NT 0.076BJ BDL 200B 0.29J 0.32 BDL 3.9J 1B 1.6J 0.76BJ BDL BDL 0.12J BDL 84 NT NT NT 5/21/15 BDL 1.1 0.15BJ BDL 2.1 16 BDL 0.38J 4.9 BDL BDL 0.26J 3.7 BDL NT 0.57J BDL 220 0.65 1.7 1.2J 4.8J 11 2.8J 6 BDL BDL 0.27J 5.1 45 NT BDL NT 12/9/15 BDL 1.3 BDL BDL 2.3 16 BDL 0.49J 5.3 BDL BDL BDL 3.9 BDL NT BDL BDL 180 0.36J 0.33 BDL 3.4J 1.9B 1J 1.4 BDL BDL 0.16J 1.5J 47 NT NT NT 5/12/16 BDL 1.1 BDL BDL 2 15 BDL BDL 5.1 BDL BDL BDL 3 BDL NT BDL BDL 190 0.23J 0.2 BDL 3J 0.68J 0.79J 0.31J BDL BDL 0.14J 2.4BJ 8.6BJ NT BDL NT 12/14/16 2.9J 1.3 BDL BDL 1.9 17 BDL 0.45J 5.9 BDL BDL BDL 3.1 BDL NT BDL 0.3J 250 0.42 0.31 2.5J 4.8J 1.6 4J 0.92J BDL 0.61J 0.18J 3.3BJ 55 NT NT NT7/25/17 4.3J 0.55J BDL BDL 0.88J 15 BDL BDL 5.1 BDL BDL BDL 2.7 BDL NT BDL BDL 210 0.23J BDL BDL 3.2J 1.3J 1.7J 0.98J BDL BDL 0.18J BDL 12B NT BDL NT12/30/17 BDL 1.3 BDL BDL 1.2 17 BDL BDL 6 BDL BDL BDL 3.2 BDL NT BDL BDL 270 0.79 0.52 20 4.6J 6.1 10 4.5 BDL BDL 0.26J 6.6 31 NT NT NT6/19/18 BDL 0.97J BDL BDL 1.2 16 BDL BDL 7.4 BDL BDL BDL 1.5 BDL NT BDL BDL 230 0.24J 0.36J BDL 4J BDL BDL 0.32J BDL BDL 0.16J BDL 7.5J NT BDL BDL12/19/18 BDL 1.4 BDL BDL 2.4 16 0.31J 0.28J 6.4 BDL BDL BDL 2.7 BDL 2.6J BDL 0.33J 280 0.24J 0.35J 0.56J 4.3 1.4J 1.3J 0.45J BDL 0.24J 0.23J BDL 8.5J NT NT NT6/10/19 2.1J 0.98J BDL BDL 1.7 14 BDL BDL 4.9 BDL BDL BDL 2 BDL BDL BDL BDL 260 0.16J BDL BDL 3.8J BDL BDL BDL BDL BDL 0.16J BDL 7.7BJ NT BDL 0.035JP12/6/19 BDL 1.2 BDL BDL 2 15 0.4J 0.5J 5.5 BDL BDL BDL 1.9 BDL 3.5 BDL BDL 320 0.7 1.2 2.4J 5.1 7 2.2J 5.9 BDL BDL 0.31J 6.8 33 NT NT NT8/9/20 BDL 1.1 BDL BDL 2.2 14 BDL BDL 4.8 BDL BDL BDL 1.6 BDL 2.9J BDL BDL 290 0.2J 0.24J BDL 3.7J BDL BDL 0.36J BDL BDL 0.17J BDL 9.5J NT BDL BDL12/26/20 BDL 1.3 BDL BDL 1.8 14 BDL BDL 6.1 BDL BDL BDL 1.7 BDL 14 BDL BDL 330 0.17J 0.17J BDL 4J BDL BDL BDL BDL BDL 0.15J BDL 3.4J NT NT NT8/30/21 BDL 0.71J BDL BDL 1.8 10 BDL BDL 3.5 BDL BDL BDL 0.83J BDL 3.5 BDL BDL 350 0.25J 0.22J BDL 4J BDL BDL 0.27J BDL BDL 0.18J BDL 10 NT BDL BDL12/31/21 BDL 1.3 BDL BDL 2.3 13 BDL BDL 6.1 BDL BDL BDL 1.3 BDL 3.6 BDL BDL 330 0.16J 0.22J BDL 5.2 BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT8/22/22 BDL 1.1 BDL BDL 2.1 14 BDL BDL 6.5 BDL BDL BDL 0.74J BDL 3.3 BDL BDL 320 0.36J 0.71 BDL 5.1 3.9J 1.3J 2.9 BDL BDL 0.26J 3.7J 27 NT NT 0.044P12/30/22 BDL 1.1 BDL 0.41J 2.6 14 BDL BDL 8.1 BDL BDL BDL 0.68J BDL 3.6 BDL BDL 330 0.17J 0.39J BDL 5.6 2J BDL BDL BDL BDL 0.15J BDL 4.1J NT NT NT NCGPS 6,000 1 700 3,000 6 6 0.4 7 70 0.6 5 0.7 3 3 20 10 700 4 2 10 1 1,000 100 15 20 1 2 7 1,000 40 0.002 0.020Notes: Groundwater samples collected by Buxton Environmental, Inc. and analyzed for Appendix I constituents. A = acetone; B = benzene; CD = carbon disulfide; DCB = dichlorobenzene; DCA = dichloroethane; DCE = dichloroethene; DCP = dichloropropane; MC = methylene chloride; PCE = tetrachloroethene; TCE = trichloroethene; TCFM = trichlorofluromethane; VC = vinyl chloride; X = xylenes; As = arsenic; Ba = barium; Be = beryllium; Cd = cadmium; Cr = chromium; Cu = copper; Co = Cobalt;Pb = lead; Tl = Thallium;V = vanadium;Zn = zinc; MP = methylphenolP = RDP between two GC colums exceeds 40% (results suspect)BDL=Below Detection Limit; NT = not tested; NCGPS=North Carolina Groundwater Protection Standard; B = detected in method blankBold and shade denote above NCGPS; Data presented in micrograms per liter (ug/l)J = estimated result <PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards (primary standard used to establish NCGPS's) dated April 1, 2022, J-flagged groundwater data exceeding the standard does not constitute an exceedance. Appendix I Metals Appendix IIAppendix I VOCs TABLE 7f HISTORICAL APPENDIX I GROUNDWATER ANALYTICAL RESULTS MW-15 GASTON COUNTY UNIT I LINED MSW SUBTITLE D LANDFILL - HARDIN SITEPERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROADDALLAS, NORTH CAROLINADate Appendix I VOCs SIM Appendix I Metals Sampled A B CA CB CD DBCM 1,4-1,1-1,2-1,1-cis-1,2-EB PCE TCE VC X 1,4-Ag As Ba Be Cd Cr Co Cu Ni Pb Se Sb Tl V Zn BBP Di-n-BPDinoseb N beta-4,4'-DDT DCB DCA DCA DCE DCE Dioxane ****BHC** 10/23/01 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 30 BDL BDL 6 79 BDL 36 BDL BDL BDL BDL BDL 217 NT NT NT NT NT NT2/1/02 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 77 BDL BDL BDL BDL 10 BDL 5 6 BDL BDL BDL 46 NT NT NT NT NT NT3/1/02 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 118 BDL BDL BDL BDL BDL BDL 9 BDL BDL BDL BDL 28 NT NT NT NT NT NT 4/15/02 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 48 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT NT NT NT 10/1/02 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 210 3.3 BDL 9.4 BDL 26 BDL 28 BDL BDL BDL 34 92 NT NT NT NT NT NT 4/10/03 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 81 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT NT NT NT 10/6/03 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 90 BDL BDL BDL BDL BDL BDL 5.3 BDL BDL BDL BDL BDL NT NT NT NT NT NT 4/6/04 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL 6.9 150 BDL BDL 7 BDL 33 BDL 17 BDL BDL BDL 31 93 NT NT NT NT NT NT 10/14/04 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 140 2.1 BDL 8.8 BDL 27 BDL 13 BDL BDL BDL 28 110 NT NT NT NT NT NT 4/13/05 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 120 BDL BDL BDL BDL BDL BDL 8.3 BDL BDL BDL BDL 33 NT NT NT NT NT NT 10/26/05 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL 5 150 2.8 BDL 8 BDL 24 BDL 15 BDL BDL 18 28 82 NT NT NT NT NT NT 5/10/06 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 120 2.9 BDL BDL BDL 15 BDL 8 BDL BDL BDL 17 50 NT NT NT NT NT NT 11/25/06 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 76 BDL 1.7 BDL BDL BDL BDL BDL BDL BDL BDL 12 28 NT NT NT NT NT NT 5/30/07 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.3J BDL 27 0.3J 1 1.4J 0.24J 1.2 0.64J 0.64J 0.7J BDL BDL 1.7J 8.9BJ NT NT NT NT NT NT 11/14/07 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.42BJ 0.38J 160 2.4B 0.8 7 3.8BJ 19B 2.8J 15 7.6 0.14BJ0.32BJ 23 68 NT NT NT NT NT NT 6/2/08 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.16J 0.29J 44B 0.6B 0.43 1.2J 0.39BJ 2.5 0.47J 1.3B 0.42J BDL BDL 2.1J 10 NT NT NT NT NT NT 12/3/08 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.46J 0.32J 50B 0.47B 1 0.68J0.14BJ 1.6 BDL 0.46J BDL BDL BDL BDL 9J NT NT NT NT NT NT 6/23/09 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.015J 1.1B 66 0.61 1.5 0.35J 0.33J 2.7 1J 1.2 1.3 BDL BDL 2.5J 17 NT NT NT NT NT NT 11/20/09 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.67BJ BDL 64 0.53 1.3 BDL 0.12J 0.42J BDL 0.11J 0.55J 0.13J BDL BDL 5J NT NT NT NT NT NT 4/13/10 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.2 BDL NT 0.086J 0.29J 84 0.72 0.43 0.36J 0.22J 0.88BJ BDL 0.39J 0.6J BDL BDL BDL 5.9J NT NT NT NT NT NT 11/30/10 BDL 0.68J BDL BDL0.22BJ 0.47J BDL 0.14J BDL 0.22J 0.31J 1.1 BDL BDL 1.2 5.2 NT BDL BDL 110 0.82 1.1 BDL 0.27J 1.5 0.53J 1.2 1.7 BDL BDL 1.8J 12 NT NT NT NT NT NT 5/25/11 BDL 1.3 BDL BDL BDL BDL BDL BDL BDL BDL 0.59J 0.45J BDL BDL 0.99J 6.7 NT 0.075J BDL 110 0.85 0.57 BDL 0.47J 5 BDL 1 1.4B BDL BDL 2.4J 8.9J NT NT NT NT NT NT 12/7/11 BDL 5.8 0.73J BDL BDL BDL 0.55J 0.38J BDL BDL 3 BDL 0.52J 0.42J 2.6 20 NT BDL 0.72J 120 1 1.1 BDL 0.27J 1.8 0.41J 0.86J BDL BDL BDL 2.7J 12B NT NT NT NT NT NT5/30/12 BDL 1.6 BDL BDL BDL BDL BDL BDL BDL BDL 0.38J BDL BDL BDL 1.5 4.3 NT 0.35J BDL 130 1.1 0.62 BDL 0.43J 2 0.97J 1 1.3 BDL BDL 3J 20B NT NT NT NT NT NT12/18/12 BDL 1.5 BDL BDL BDL BDL BDL BDL BDL BDL 0.42J BDL 0.15J BDL 1.1 3.1 NT BDL BDL 100 0.77 1 1.2J 0.21J 3.8B 0.58BJ0.92J BDL BDL BDL 3.6J 7.8BJ NT NT NT NT NT NT5/20/13 BDL 0.98J BDL BDL BDL BDL BDL BDL BDL BDL 0.18J BDL BDL BDL 1.5 1.3 NT 0.017J BDL 120B 0.85 0.57 0.99J 1.2J 3.1B 4.1J 0.5BJ 0.81J BDL BDL BDL 10B NT NT NT NT NT NT11/25/13 7.0BJ 0.81J BDL BDL BDL BDL BDL BDL BDL BDL 0.21J BDL BDL BDL 1.5 0.93J NT BDL BDL 120 0.82 0.62 0.66J 0.52J 2.2B 0.5J 0.85J BDL BDL BDL 1.8J 62 NT NT NT NT NT NT 5/19/14 BDL 0.65J BDL BDL BDL BDL BDL 0.27J BDL BDL BDL BDL BDL BDL 0.91J0.47J NT BDL BDL 140 1.1 1.1 0.46J 0.82J 3.5 1.2J 1.3 1 BDL BDL 3.1J 60 NT NT NT NT NT NT 12/27/14 BDL 2.3 BDL BDL BDL BDL 0.52J 0.35J BDL BDL 1.2 BDL 0.34J 0.28J 1.6 2 NT 0.2BJ 3.7J 110B 0.96J 1 BDL 0.33J 2.4BJ 0.8J0.73BJBDL BDL BDL BDL 46 NT NT NT NT NT NT 5/15/15 BDL 2.2 BDL BDL BDL BDL 0.53J BDL 0.65J BDL 1.1 BDL BDL 0.3J 0.81J 1.7 NT 0.63J BDL 140 1.2 1.1 1.3J 0.73J 2.6 1.2J 1.4 1 BDL BDL 2.5J 16 NT NT NT NT NT NT 12/9/15 BDL 3.4 0.52J 0.23J BDL BDL 0.96J 0.6J 1.3 BDL 2.9 BDL 0.68J 0.75J 1.9 2.4 NT BDL BDL 110 0.99 1.2 0.64J 0.35J 1.5B 0.69J 0.69J BDL BDL BDL 1.4J 28 NT NT NT NT NT NT 5/11/16 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 68 0.75 0.43 BDL 0.83J 2B 0.8J 0.94J BDL BDL BDL 5.3B 23B NT NT NT NT NT NT 12/15/16 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.42J BDL BDL BDL BDL BDL NT BDL 0.28BJ130B 1.2B 0.18 BDL BDL 0.94BJ 2.1J0.64BJ 1.3 BDL BDL BDL 5.8J NT NT NT NT NT NT 7/25/17 3.5J BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6J BDL BDL BDL BDL BDL NT BDL BDL 120 1 1.9 BDL BDL 0.98J BDL 0.27J BDL BDL BDL BDL 8.3BJ NT NT NT NT NT NT 12/31/17 2.1J BDL BDL BDL BDL BDL 0.67J BDL 1.1 BDL 2.7 BDL BDL 0.84J BDL BDL NT BDL BDL 97 0.81 0.72 1.4J BDL 1.9J BDL 0.66J BDL BDL BDL 3.1J 15 NT NT NT NT NT NT 6/20/18 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 100 0.68 0.17J 1.4J BDL BDL BDL 0.42J BDL BDL BDL BDL 5.7 NT NT NT NT NT NT 12/20/18 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.41J 120 0.85J 0.39J0.98BJ 0.25J 0.87J 1.4J 0.23J BDL BDL BDL 0.51J 5.9J NT NT NT NT NT NT 6/11/19 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 92 0.89 0.44J 1.9J BDL 1.3J BDL BDL 0.35J BDL BDL BDL 9.9BJ NT NT NT NT NT NT 12/6/19 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 BDL BDL BDL BDL 99 0.97 0.49J BDL BDL 2.2J BDL 0.77J BDL BDL BDL BDL 7.6J NT NT NT NT NT NT 8/7/20 BDL 3 0.54J 0.46J BDL BDL 1.3 BDL BDL BDL 0.53J BDL BDL BDL 1 BDL NT BDL BDL 100 0.98 0.94 BDL BDL 1.3J BDL 0.43J BDL BDL BDL BDL 6.4J NT NT NT NT NT NT 12/27/20 BDL 4.2 BDL BDL BDL BDL BDL BDL BDL BDL 0.73J BDL BDL BDL 1.9 1.4 NT BDL BDL 130 0.85 0.67 BDL BDL 2J BDL 1 BDL BDL BDL BDL 8.7J NT NT NT NT NT NT 8/30/21 BDL 5.6 BDL 0.57J BDL BDL 0.92J BDL 0.55J BDL 1.2 BDL BDL BDL 1.3 0.82J NT BDL BDL 110 1 0.46J BDL BDL BDL BDL 0.38J BDL BDL BDL BDL 4.8J NT NT NT NT NT NT 12/30/21 BDL 7.6 0.41J 1.2 BDL BDL 2.4 BDL 0.95J BDL 1.9 BDL BDL BDL 0.79J BDL BDL BDL BDL 220 1.6 0.61 BDL BDL 2.2J BDL 1.4 BDL BDL BDL BDL 9J BDL BDL BDL BDL 0.072 BDL 8/24/22 BDL 3.4 0.53J 0.57J BDL BDL 1.2 BDL 0.99J BDL 1.6 BDL BDL BDL 0.89J BDL BDL BDL BDL 190 0.54 0.15J BDL BDL BDL BDL BDL BDL BDL BDL BDL 4.1J BDL BDL BDL BDL 0.021JP 0.22J 12/30/22 BDL 1.3 BDL 0.4J BDL BDL 1.5 0.7J 1.9 BDL 4.3 BDL BDL BDL BDL BDL NT BDL BDL 180 0.73 0.57 BDL BDL 2J BDL 0.73J BDL BDL 0.18J BDL 5.3J 0.5J 0.72BJ 0.7BJP BDL 0.16 BDL NCGPS 6,000 1 3,000 50 700 0.4 6 6 0.4 7 70 600 0.7 3 0.03 500 3 20 10 700 4 2 10 1 1,000 100 15 20 1 2 7 1,000 1,000 700 7 6 0.02 0.1Notes: Groundwater samples collected by Buxton Environmental, Inc. and analyzed for Appendix I and Appendix II* constituents.A = acetone; B = benzene; CA = chloroethane; CB = chlorobenzene; CD = carbon disulfide; DBCM = dibromochloromethane; DCA = dichloroethane; DCE = dichloroethene; EB = ethylbenzene; N=naphthalene; VC = vinyl chloride; X = xylenes; As = arsenic; Ba = barium; Be = beryllium; Cd = cadmium; Cr = chromium; Cu = copper; Co = Cobalt;Pb = lead; Tl = Thallium;V = vanadium;Zn = zinc ;BBP=butyl benzyl phthalate; Di-n-BP=Di-n-butyl PhthalateNCGPS=North Carolina Groundwater Protection Standard; BDL=Below Detection LimitBold and shade denote above NCGPSData presented in micrograms per liter (ug/l)B = detected in method blank J = estimated result <PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards (primary standard used to establish NCGPSs) dated April 1, 2022, J-flagged groundwater data exceeding the standard does not constitute an exceedance. Appendix II TABLE 7g HISTORICAL APPENDIX I GROUNDWATER ANALYTICAL RESULTS MW-16 GASTON COUNTY UNIT I LINED MSW SUBTITLE D LANDFILL - HARDIN SITE PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINADate Appendix I VOCs SIMSampledABCACBCD1,4-1,1-cis-1,2-MC PCE TCE ST T VC X 1,4-Ag As Ba Be Cd Cr Co Cu Ni Pb Se Sb Tl V Zn BBP bis(2-E)P N beta- DCB DCA DCE Dioxane ***BHC* 10/23/01 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL 5 80 BDL BDL 6 BDL 12 BDL 7 BDL BDL BDL BDL 52 NT NT NT NT 2/1/02 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL 15 643 10 3 19 28 40 BDL 89 BDL BDL BDL 128 327 NT NT NT NT 3/1/02 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL 8 296 5 BDL 8 BDL 22 BDL 43 BDL BDL BDL 51 114 NT NT NT NT 4/15/02 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 48 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT NT 10/1/02 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 420 4.4 BDL 6 BDL 18 BDL 32 BDL BDL BDL 33 110 NT NT NT NT 4/10/03 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 100 BDL 1.2 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT NT 10/6/03 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 170 3.1 BDL BDL BDL BDL BDL 12 BDL BDL BDL 14 49 NT NT NT NT 4/6/04 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL 9.4 340 BDL BDL 5.1 BDL 32 BDL 33 BDL BDL BDL 57 200 NT NT NT NT10/14/04 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 330 4.2 BDL 8.9 BDL 27 BDL 28 BDL BDL BDL 49 160 NT NT NT NT4/13/05 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 120 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 23 NT NT NT NT10/26/05 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 120 BDL BDL BDL BDL BDL BDL 6 BDL BDL 10 11 34 NT NT NT NT 5/10/06 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 92 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT NT 11/25/06 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 99 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT NT NT NT 5/31/07 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.2J BDL 66 0.41 0.49 0.82J 0.79J 0.77J 0.39J 0.24J BDL BDL BDL BDL 5.9BJ NT NT NT NT 11/14/07 BDL 0.22J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6J 0.27J NT 0.5J BDL 110B 0.71 0.71 1.9J 1.2J 3.4 1.1J 2.9 1.2 0.59J 0.11J 4.4J 21 NT NT NT NT 6/2/08 BDL 0.56J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.96J 0.57J NT 0.47J 0.7J 140B 0.58B 0.83 1J 1.7BJ 1.8 0.58J 0.53BJ BDL 0.22J 0.096BJ 2.1J 8.4J NT NT NT NT 12/3/08 BDL 0.79J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.1 1.2 NT 0.11J 0.3J 160B 0.36BJ 0.34 0.52J 1.2BJ 1.1 BDL 0.39J BDL 0.2J BDL BDL 9.8J NT NT NT NT 6/23/09 BDL 6.2 BDL BDL BDL BDL BDL 0.87J 0.35J BDL BDL BDL 0.37J 2.9 12 NT 0.22J 1.9B 320 0.72 0.91 BDL 3.1J 4.4 1J 2.3 BDL BDL BDL 4.7J 26 NT NT NT NT 11/20/09 BDL 2.9 BDL BDL BDL BDL BDL 0.37J BDL BDL BDL BDL BDL 1.5 2 NT 0.25BJ 0.6J 230 0.22J 0.46 BDL 2.5J 0.77J 2.4J 0.33J BDL BDL BDL 1.5J 7.3J NT NT NT NT 4/13/10 BDL 5 BDL BDL BDL BDL BDL 0.8J BDL 0.14J BDL BDL BDL 2 6 NT 0.16J 1.1 220 0.34J 0.59 BDL 3.8J 5.5B 5.1 2 0.27J BDL BDL BDL 37 NT NT NT NT 11/30/10 BDL 4.1 BDL BDL 0.18BJ0.18BJ BDL 0.58J BDL 0.16J BDL 0.39J BDL 1.5 0.93J NT 0.092J0.62J 330 0.45 1.9 BDL 4.5J 3.3 1.2J 1.9 0.36J BDL BDL 4J 29 NT NT NT NT5/25/11 BDL 5.5 BDL BDL BDL 0.56J BDL 1 0.71J BDL BDL BDL BDL 1.2 BDL NT 0.13J 0.58J 310 0.16J 0.81 1.4BJ 8.1 BDL BDL 0.052J 0.87BJ BDL BDL BDL 7.6J NT NT NT NT12/7/11 BDL 5.3 0.81J BDL BDL 0.65J BDL 1.2 BDL BDL BDL BDL BDL 1.6 0.42J NT BDL 2.1 290 0.17J 1.4 BDL 10 1.4 1.2J 0.075J BDL BDL BDL BDL 16B NT NT NT NT5/30/12 BDL 5.8 0.64J BDL BDL 0.99J BDL 1.3 BDL BDL BDL BDL BDL 1.9 0.64J NT 0.77J 1.3 310 0.31J 1.3 BDL 10 2.5 3.2J 0.91J 0.93J BDL BDL 2J 19B NT NT NT NT 12/18/12 BDL 2.6 BDL BDL BDL 0.42J 0.18J 0.81J BDL 0.35J BDL BDL BDL 0.68J BDL NT BDL 0.97J 240 0.051J 0.76 BDL 5.2 1.1B 0.86BJ 0.14J BDL 0.32J BDL BDL 11B NT NT NT NT 5/20/13 BDL 3.4 BDL BDL BDL 0.96J 0.22J 1.1 BDL 0.25J BDL BDL BDL 1.7 BDL NT 0.023J 3.3 320B 0.39J 0.36 1.8J 14 2.8B 2.2J 0.97BJ 0.29J BDL 0.081J 5.4 20B NT NT NT NT 11/25/13 8.1BJ 1.8 BDL BDL BDL 0.49J 0.2J 1.1 BDL 0.24J BDL BDL BDL 2.1 BDL NT BDL 0.4J 240 0.13J 1.6 BDL 6.4 1.1B 0.89J 0.17J BDL BDL BDL BDL 120 NT NT NT NT 5/19/14 BDL 2.3 BDL BDL BDL 0.59J 0.15J 0.87J BDL BDL BDL BDL BDL 2.8 BDL NT BDL 9.3 290 0.16J 0.3 BDL 7.1 0.98J 1.6J 0.2J 0.37J BDL BDL BDL 110 NT NT NT NT 12/27/14 BDL 1.2 BDL BDL BDL BDL 0.24J 1.2 BDL 0.25J BDL BDL 0.35J 1.1 BDL NT 0.72BJ 1.5 300B 0.45 3.2 BDL 4.4J 3.4B 3J 2B 0.34J BDL 0.24J BDL 160 NT NT NT NT 5/15/15 BDL 0.63J BDL BDL BDL 0.33J 0.17J 0.92J BDL BDL 0.25J BDL BDL BDL BDL NT 0.82J 3.2 270 0.72 2.1 1.4J 5.2 7.7 2.5J 4.8 BDL BDL 0.22J 7.8 64 NT NT NT NT 12/9/15 BDL 0.54J BDL BDL BDL 0.3J 0.2J 1.1 BDL BDL 0.34J BDL BDL 0.54J BDL NT BDL 2 200 0.49 1.50 BDL 3.9J 3.1B 1J 1.2 BDL BDL 0.17J 1.9J 57 NT NT NT NT 5/11/16 1.7J 0.47J BDL BDL BDL 0.21J BDL 0.32J BDL BDL BDL BDL BDL BDL BDL NT BDL 2 150 0.3J 0.82 BDL 6.1 1.6B 0.84J 0.17J BDL BDL BDL 2BJ 43B NT NT NT NT 12/15/16 BDL 1 BDL BDL 0.75J BDL BDL 1.6 BDL BDL BDL BDL BDL 0.77J BDL NT 0.48J0.64BJ220B 0.35BJ 0.54 BDL 2.6J 2.4B 4.8J 0.79BJ BDL 0.98J 0.2J BDL 15 NT NT NT NT7/26/17 3.5J 0.53J BDL BDL BDL 0.44J BDL 1.1 BDL BDL BDL BDL BDL 0.59J BDL NT BDL 1.8J 230 0.34J BDL BDL 3.6J 1.3J 2.1J BDL BDL 0.92J 0.21J BDL 8.5BJ NT NT NT NT12/31/17 BDL 0.5J BDL BDL BDL 0.53J BDL 1.4 BDL BDL BDL BDL BDL BDL BDL NT 4.4 3.6 210 0.90 0.31J 8.50 6.4 18 5 3.1 BDL BDL 0.15J 7.1 23 NT NT NT NT6/20/18 6.5J 0.62J BDL BDL BDL 0.5J BDL 0.92J BDL BDL BDL BDL BDL BDL BDL NT BDL 3.2 250 0.23J 0.53 BDL 10 1.9J BDL 1.1 BDL BDL BDL 2.6J 18 NT NT NT NT12/20/18 79 2.3 BDL BDL BDL 0.78 BDL 0.54 BDL BDL BDL BDL BDL 0.91 BDL BDL BDL 4.3 330 0.35J 0.29J 0.52J 8.2 1.1J BDL 0.11J BDL BDL 0.22J 0.2J 13 NT NT NT NT 6/11/19 20 2.4 BDL BDL BDL BDL BDL 2.2 BDL BDL 0.51J BDL BDL BDL BDL BDL BDL 4.4 250 0.18J 0.22J BDL 6.7 BDL BDL BDL BDL BDL BDL BDL 11B NT NT NT NT 12/6/19 BDL 1.1 BDL BDL BDL 0.81J BDL 2.4 BDL BDL 0.41J BDL BDL 1.5 BDL BDL BDL 7.6 230 0.35J 1.10 BDL 7 1.3J BDL 0.47J BDL BDL 0.18J BDL 17 NT NT NT NT 8/7/20 BDL 3.2 BDL 0.4J BDL 1.3 BDL 2.4 BDL BDL 0.49J BDL BDL BDL BDL NT BDL 10 190 0.27J 0.75 BDL 6.5 BDL BDL BDL BDL BDL BDL BDL 8.5J NT NT NT NT 12/27/20 BDL 3.7 0.66J 0.55J BDL 2.5 BDL 1.2 BDL BDL BDL BDL 0.47J 0.86J BDL NT BDL 14 210 0.34J 0.22J BDL 7.8 BDL BDL BDL BDL BDL BDL BDL 5J NT NT NT NT 8/16/21 5.4J 1.2 BDL 0.43J BDL 4.5 0.51J 3.3 BDL BDL 0.59J BDL BDL BDL BDL NT BDL 10 190 0.27J 2.8 BDL 8.6 1.3J BDL 0.38J BDL BDL 0.27J BDL 56 NT NT NT NT 12/30/21 BDL 0.69J BDL 0.41J BDL 1.4 0.42J 2.4 BDL BDL BDL BDL BDL BDL BDL BDL BDL 9.9 210 0.26J 1.1 BDL 8.3 BDL BDL 0.38J BDL BDL 0.29J BDL 21 BDL BDL BDL 0.085 8/24/22 BDL 0.94J BDL BDL BDL 1.1 0.5J 2.6 BDL BDL BDL BDL BDL BDL BDL BDL BDL 12 150 0.28J 0.21J BDL 5.8 BDL BDL 0.26J BDL BDL BDL BDL 5.5J BDL BDL 0.064J BDL 12/30/22 BDL 0.72J BDL BDL BDL 1.2 0.46J 2.6 BDL BDL BDL BDL BDL BDL BDL NT BDL 15 180 0.47 1.1 BDL 7.5 BDL 1.7J 0.43J BDL BDL 0.21J BDL 18 0.51J 3.5J BDL BDL NCGPS 6,000 1 ####50 700 6 6 70 5 0.7 3 70 ####0.03 500 3 20 10 700 4 2 10 1 ####100 15 20 1 2 7 1,000 1,000 3 6 0.02Notes: Groundwater samples collected by Buxton Environmental, Inc. and analyzed for Appendix I and Appendix II* constituents.B = benzene; CA = chloroethane; CB = chlorobenzene; CD = carbon disulfide; DCB = dichlorobenzene; DCE = dichloroethene; MC = methylene chloride; PCE = tetrachloroethene; ST = styrene; T = toluene; VC = vinyl chloride; X = xylenes; As = arsenic; Ba = barium; Be = beryllium; Cd = cadmium; Cr = chromium; Cu = copper; Co = Cobalt;Pb = lead; Tl = Thallium;V = vanadium;Zn = zinc; BBP=butyl benzyl phthalate; bis(2-E)P=bis (2-ethylhexyl)phthalateBDL=Below Detection Limit; NCGPS=North Carolina Groundwater Protection Standard; Bold and shade denote above NCGPS; Data presented in micrograms per liter (ug/l)B = detected in method blank J = estimated result <PQL and >=MDL (According to NCAC Title 15A Subchapter 2L North Carolina Groundwater Quality Standards (primary standard used to establish NCGPSs) dated April 1, 2022, J-flagged groundwater data exceeding the standard does not constitute an exceedance. Appendix I Metals Appendix II APPENDIX C Leachate Analytical Results - Unit I Phase 1 & 2 Lined MSW Landfill – August & December 2022 Sample ID.LEACHATE-UNIT I (E)LEACHATE-UNIT I (W) Appendix I VOCs (EPA 8260D) Acetone 1,100 7,600 Benzene 6.5 12 2-Butanone 1,300 15,000 Carbon Disulfide 0.69J BDL Chlorobenzene 3 BDL 1,4-Dichlorobenzene 9.6 4.5J 1,1,Dichloroethane 0.53J BDL 1,2-Dichloroethane 3.5 4.4J 1,4-Dioxane 170 BDL Ethylbenzene 18 21 2-Hexanone BDL 12J 4-Methyl-2-Pentanone 73 50 Methylene Chloride 1.3 BDL Styrene 3.3 BDL Tetrachloroethene 0.82J BDL Toluene 49 64 Trichloroethene 0.62J BDL Xylenes 63 50 1,4-Dioxane (EPA 8260D SIM)110 50 Appendix I Metals (EPA 6020B) Antimony 6.9J 30 Arsenic 81 45 Barium 1,600 1,300 Chromium 110 16J Cobalt 29 14J Lead 2.9J BDL Mercury BDL BDL Nickel 160 65 Selenium 14J 16J Vanadium 81 30 Zinc 47BJ 15BJ Pesticides (EPA 8081B) Aldrin 0.08Q 0.05P beta-BHC 0.25PQ 0.17P Additional Parameters Nitrate 240H 200H BOD 390,000 (1)120,000 (1) COD 5,400,000 880,000 Orthophosphate 1,400,000H 840H Sulfate 35,000 460J Notes: Leachate samples collected on August 25, 2022 by Buxton Environmental, Inc. and analyzed for above listed parameters by Pace Analytical Services, LLC. J = estimated result <PQL or LOQ and >=MDL B = detected in method blankdata presented in micrograms per liter (ug/l) only detected constituents are presented 1=G:G lower than valid range; H = analyzed out of EPA holding time P=the relative percent difference between two gas chromatograph (GC) columns exceeds 40%, results estimated Q=surrogate failure, results estimated PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA TABLE 6 LEACHATE ANALYTICAL RESULTS FIRST SEMI-ANNUAL 2022 GASTON COUNTY UNIT I PHASE 1 & 2 LINED MSW SUBTITLE D LANDFILL - HARDIN SITE Sample ID.LEACHATE-UNIT I (E)LEACHATE-UNIT I (W) Appendix I VOCs (EPA 8260D) Acetone 63J 540 Benzene 5.3 5.6 2-Butanone 110 950 Carbon Disulfide BDL 0.61J Chlorobenzene BDL 3 1,4-Dichlorobenzene 3.5 8.1 1,1,Dichloroethane 0.42J BDL 1,2-Dichloroethane 11 3.1 cis-1,2-Dichloroethene 4.2 2.4 trans-1,2-Dichloroethene 0.68J BDL 1,2-Dichloropropoane 0.75J BDL Ethylbenzene 8.8 19 4-Methyl-2-Pentanone 16 42 Methylene Chloride 2 1.2 Styrene 2.3 2.9 Tetrachloroethene 0.57J 0.85J Toluene 42 49 Trichloroethene 0.48J 0.58J Vinyl Chloride 1.2 1.2 Xylenes 36 57 1,4-Dioxane (EPA 8260D SIM)4.4 120 Appendix I Metals (EPA 6020B) Antimony 2.9J 35 Arsenic 37 100 Barium 1,900 4,200 Beryllium 0.79J BDL Chromium 52 33 Cobalt 37 17J Copper 28 16J Lead 23 6.4 Nickel 120 86 Selenium 13J 10J Vanadium 85 130 Zinc 97 140 Pesticides (EPA 8081B) Aldrin BDL BDL beta-BHC 0.28JQ BDL Additional Parameters Nitrate 3,400 190 BOD 120,000 97,000H COD 800,000 760,000 Orthophosphate BDL 73 Sulfate 45,000 16,000 Notes:Leachate samples collected on January 2, 2023 by Buxton Environmental, Inc. and analyzed for above listed parameters by Pace Analytical Services, LLC. J = estimated result <PQL or LOQ and >=MDL B = detected in method blank data presented in micrograms per liter (ug/l) only detected constituents are presented 1=G:G lower than valid range; H = analyzed out of EPA holding time P=the relative percent difference between two gas chromatograph (GC) columns exceeds 40%, results estimated Q=surrogate failure, results estimated PERMIT NO.: 3606 3155 PHILADELPHIA CHURCH ROAD DALLAS, NORTH CAROLINA TABLE 6 LEACHATE ANALYTICAL RESULTS SECOND SEMI-ANNUAL 2022 GASTON COUNTY UNIT I PHASE 1 & 2 LINED MSW SUBTITLE D LANDFILL - HARDIN SITE APPENDIX D Laboratory Data Sheets The electronic signature above is the equivalent of a handwritten signature. This report shall not be reproduced,except in its entirety,without the written approval of Pace Analytical Services,LLC. Pace Analytical Services,LLC (formerly Shealy Environmental Services,Inc.) 106 Vantage Point Drive West Columbia,SC 29172 Tel:803-791-9700 Fax:803-791-9111 www.pacelabs.com Report of Analysis Buxton Environmental PO Box 11550 Charlotte,NC 28220 Attention:Ross Klingman Project Name:Gaston County-Hardin Landfill Project Number:3606 Lot Number:YA03041 Date Completed:01/27/2023 03/15/2023 11:10 PM Approved and released by: Project Manager II:Cathy S.Dover Page 1 of 159 PACE ANALYTICAL SERVICES,LLC SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639 Pace Analytical Services,LLC (formerly Shealy Environmetal Services,Inc.) 106 Vantage Point Drive West Columbia,SC 29172 (803)791-9700 Fax (803)791-9111 www.pacelabs.com Case Narrative Buxton Environmental Lot Number:YA03041 This Report of Analysis contains the analytical result(s)for the sample(s)listed on the Sample Summary following this Case Narrative.The sample receiving date is documented in the header information associated with each sample. All results listed in this report relate only to the samples that are contained within this report.Where sampling is conducted by the client,results relate to the accuracy of the information provided,and as the samples are received. Sample receipt,sample analysis,and data review have been performed in accordance with the most current approved The NELAC Institute (TNI)standards,the Pace Analytical Services,LLC ("Pace")Laboratory Quality Manual,standard operating procedures (SOPs),and Pace policies.Any exceptions to the TNI standards,the Laboratory Quality Manual,SOPs or policies are qualified on the results page or discussed below. Pace is a TNI accredited laboratory;however,the following analyses are currently not listed on our TNI scope of accreditation:Drinking Water:VOC (excluding BTEX,MTBE,Naphthalene,&1,2-dichloroethane)EPA 524.2,E.coli and Total coliforms SM 9223 B-2004,Solid Chemical Material:TOC Walkley-Black,Biological Tissue:All,Non-Potable Water: SGT-HEM EPA 1664B,Silica EPA 200.7,Boron,Calcium,Silicon,Strontium EPA 200.8,Bicarbonate,Carbonate,and Hydroxide Alkalinity SM 2320 B-2011,SM 9221 C E-2006 &SM 9222D-2006,Strontium SW-846 6010D,VOC SM 6200 B- 2011,Fecal Coliform Colilert-18. VOA 8260D The laboratory control sample (LCS)for analytical batch 64369 exceeded acceptance criteria for 1,4-Dioxane.This analyte was biased high and was not detected in the associated samples:YA03041-001,YA03041-002,YA03041-003,YA03041- 004,YA03041-005,and YA03041-006. YA03041-001 (MW-B)(Run 1)(Analysis Batch 64369) YA03041-002 (MW-BD)(Run 1)(Analysis Batch 64369) YA03041-003 (MW-3A)(Run 1)(Analysis Batch 64369) YA03041-004 (MW-4A)(Run 1)(Analysis Batch 64369) YA03041-005 (MW-15)(Run 1)(Analysis Batch 64369) YA03041-006 (MW-16)(Run 1)(Analysis Batch 64369) The laboratory control sample duplicate (LCSD)for analytical batch 64372 exceeded acceptance criteria for the following analytes:Acetone (154%)and 2-Butanone (136%).These analytes were biased high and were not detected in the associated samples:YA03041-011,YA03041-012,YA03041-013,YA03041-014,YA03041-015,YA03041-016,and YA03041-017.The RPD for Acetone and 2-Butanone were >20%. YA03041-011 (MW-2)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) YA03041-012 (MW-6)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) YA03041-013 (MW-7)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) YA03041-014 (MW-8)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) YA03041-015 (MW-9)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) YA03041-016 (MW-10A)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) YA03041-017 (MW-19)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) Insufficient sample volume was provided to perform matrix spike/matrix spike duplicate (MS/MSD)for analytical batch 64372.An LCS/LCSD was run in lieu of an MS/MSD.Associated samples: YA03041-011 (MW-2)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) YA03041-012 (MW-6)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) YA03041-013 (MW-7)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) YA03041-014 (MW-8)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) YA03041-015 (MW-9)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) YA03041-016 (MW-10A)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) YA03041-017 (MW-19)(Run 1)(Analysis Batch 64372)Appendix I Volatiles (low-level) Insufficient sample volume was provided to perform matrix spike/matrix spike duplicate (MS/MSD)for analytical batch 64739.An LCS/LCSD was run in lieu of an MS/MSD.Associated samples: YA03041-009 (Leachate Unit I (E))(Run 2)(Analysis Batch 64739)Appendix I Volatiles (low-level) YA03041-010 (Leachate Unit I (W))(Run 2)(Analysis Batch 64739)Appendix I Volatiles (low-level) Page 2 of 159 PACE ANALYTICAL SERVICES,LLC SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639 Pace Analytical Services,LLC (formerly Shealy Environmetal Services,Inc.) 106 Vantage Point Drive West Columbia,SC 29172 (803)791-9700 Fax (803)791-9111 www.pacelabs.com Samples YA03041-009 and YA03041-010 (Leachate Unit I (W))had an air bubble >6mm in the sample vial used for reanalysis. YA03041-009 (Leachate Unit I (E))(Run 2)(Analysis Batch 64739)Appendix I Volatiles (low-level) YA03041-010 (Leachate Unit I (W))(Run 2)(Analysis Batch 64739)Appendix I Volatiles (low-level) Sample YA03041-009 was diluted due to the nature of the sample matrix.The LOQ has been elevated to reflect the dilution.Acetone resulted below the sample LOQ and will be reported as a "J"value from the Run 2 analysis.Acetone failed above ICV and CCV criteria during Run 1 analysis which was analyzed undiluted (1x). YA03041-009 (Leachate Unit I (E))(Run 2)(Analysis Batch 64739)Appendix I Volatiles (low-level) pH was observed at a 7 after analysis.YA03041-009 (Leachate Unit I (E))(Run 2)(Analysis Batch 64739) pH was observed at a 2.5 after analysis.YA03041-010 (Leachate Unit I (W))(Run 2)(Analysis Batch 64739) 1,4-Dioxane SIM 8260D The pH for sample YA03041-009 (Leachate Unit I (E))was 6 at analysis time. Insufficient sample volume was provided to perform matrix spike/matrix spike duplicate (MS/MSD)for analytical batch 64337.An LCS/LCSD was run in lieu of an MS/MSD. YA03041-001 (MW-B)(Run 1)(Analysis Batch 64337) YA03041-002 (MW-BD)(Run 1)(Analysis Batch 64337) SVOA 8270E Due to the large number of spiked analytes,there is a high probability that one or more analytes will recover outside acceptance limits.The laboratory's SOP allows for 10%of analytes to recover marginally outside criteria.The following analytes recovered marginally outside LCS/LCSD criteria:benzyl alcohol. YA03041-005 (MW-15)(Run 1)(Analysis Batch 64364)(Prep Batch 64097) YA03041-006 (MW-16)(Run 1)(Analysis Batch 64364)(Prep Batch 64097) The MS for batch 64097 and parent sample YA03041-005 (MW-15),recovered outside control limits for Benzyl Alcohol and 4-Chloroaniline.The MSD recovered outside control limits for Benzyl Alcohol,4-Chloroaniline,3,3'Dichlorobenzidine and bis(2-ethylhexyl)phthalate.The associated passed acceptance criteria except for benzyl alcohol. Pesticides 8081B The following samples were diluted due to the nature of the sample matrix:YA03041-009 and YA03041-010.The LOQ has been elevated to reflect the dilution.The surrogate recovery for sample YA03041-009 (Leachate Unit I (E))was affected by the 10x dilution. YA03041-009 (Leachate Unit I (E))(Run 1)(Analysis Batch 64127)(Prep Batch 64085)TCL Pesticides (RVE) YA03041-010 (Leachate Unit I (W))(Run 1)(Analysis Batch 64127)(Prep Batch 64085)TCL Pesticides (RVE) The MS/MSD for batch 64085 and parent sample YA03041-009 (Leachate Unit I (E)),recovered outside the lower control limit for Aldrin.The associated LCS passed acceptance criteria. Herbicide 8151A The method blank associated with batch 64110 had Dinoseb detected at a concentration that was above the DL but below the LOQ. All samples associated with this method blank that have detections for have been flagged with a "B”. ICP-MS Metals 6020B The instrument blank for analytical batch 64284 contained Thallium greater than one-half the LOQ but less than the LOQ. All associated samples are non-dectect for Thallium.The data have been qualified and reported. Associated samples: YA03041-007 (MW-17)(Run 1)(Analysis Batch 64284)(Prep Batch 64070)ICP-MS Metals YA03041-008 (MW-18)(Run 1)(Analysis Batch 64284)(Prep Batch 64070)ICP-MS Metals YA03041-009 (Leachate Unit I (E))(Run 1)(Analysis Batch 64284)(Prep Batch 64070)ICP-MS Metals Page 3 of 159 PACE ANALYTICAL SERVICES,LLC SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639 Pace Analytical Services,LLC (formerly Shealy Environmetal Services,Inc.) 106 Vantage Point Drive West Columbia,SC 29172 (803)791-9700 Fax (803)791-9111 www.pacelabs.com YA03041-010 (Leachate Unit I (W))(Run 1)(Analysis Batch 64284)(Prep Batch 64070)ICP-MS Metals YA03041-012 (MW-6)(Run 1)(Analysis Batch 64284)(Prep Batch 64070)ICP-MS Metals YA03041-013 (MW-7)(Run 1)(Analysis Batch 64284)(Prep Batch 64070)ICP-MS Metals YA03041-016 (MW-10A)(Run 1)(Analysis Batch 64284)(Prep Batch 64070)ICP-MS Metals YA03041-017 (MW-19)(Run 1)(Analysis Batch 64284)(Prep Batch 64070)ICP-MS Metals The method blank associated with batch 65660 had Selenium detected at a concentration that was above the DL but below the LOQ. All samples associated with this method blank were non-detect for Selenium. Associated samples:YA03041-005 (MW-15)and YA03041-006 (MW-16). Sulfide SM4500-S2 F Insufficient sample volume was provided to perform matrix spike/matrix spike duplicate (MS/MSD)for analytical batch 64257.An LCS/LCSD was run in lieu of an MS/MSD. YA03041-005 (MW-15)(Run 1)(Analysis Batch 64257)Sulfide YA03041-006 (MW-16)(Run 1)(Analysis Batch 64257)Sulfide Orthophosphate 365.1 According to the method,orthophosphate samples must be filtered within 15 minutes of collection.No information was provided stating that the samples in this batch were filtered to meet this requirement.Therefore,the samples were filtered during sample preparation prior to analysis.Data has been reported. YA03041-009 (Leachate Unit I (E))(Run 1)(Analysis Batch 64094)Orthophosphate YA03041-009 (Leachate Unit I (E))(Run 2)(Analysis Batch 64094)Orthophosphate YA03041-010 (Leachate Unit I (W))(Run 1)(Analysis Batch 64094)Orthophosphate YA03041-010 (Leachate Unit I (W))(Run 2)(Analysis Batch 64094)Orthophosphate Reanalysis of the following samples was performed outside of the analytical holding time:YA03041-009,YA03041-010.The samples were analyzed within hold;however,results were not obtained before acceptable batch quality control criteria were met.The results for Run 2 confirm the in-hold Run 1 analysis.Therefore,the in-hold results have been reported. YA03041-009 (Leachate Unit I (E))(Run 1)(Analysis Batch 64094)Orthophosphate YA03041-010 (Leachate Unit I (W))(Run 1)(Analysis Batch 64094)Orthophosphate The MS/MSD for batch 64094 and parent sample YA03041-010 (Leachate Unit I (W)),recovered outside the lower limit. The associated LCS passed acceptance criteria. Cyanide 9012B Due to high reactivity with the acid used during distillation,sample YA03041-006 was prepared at a 2x dilution.YA03041- 006 (MW-16)(Run 1)(Analysis Batch 64589)(Prep Batch 64483)Cyanide -Total BOD Sample YA03041-010 (Leachate Unit I (W))was prepared a day after sample receipt,but the sample was not analyzed until 1/9/2023. Samples YA03041-009 and YA03041-010,QC bottles 1-10 excluding 1,7,and 10 for BOD_64056 were recorded with initial DO values below the criteria minimum of 8.56 mg/L for setup procedure. YA03041-009 (Leachate Unit I (E))(Run 1)(Analysis Batch 64056)BOD,5 day YA03041-010 (Leachate Unit I (W))(Run 1)(Analysis Batch 64056)BOD,5 day If you have any questions regarding this report,please contact the Pace Project Manager listed on the cover page. Page 4 of 159 PACE ANALYTICAL SERVICES, LLC Sample Summary Buxton Environmental Lot Number: YA03041 Project Name: Gaston County-Hardin Landfill Project Number: 3606 Sample Number Sample ID Matrix Date Sampled Date Received 001 12/30/2022 1215MW-B Aqueous 01/03/2023 002 12/30/2022 1245MW-BD Aqueous 01/03/2023 003 12/30/2022 1445MW-3A Aqueous 01/03/2023 004 12/31/2022 1045MW-4A Aqueous 01/03/2023 005 12/30/2022 1315MW-15 Aqueous 01/03/2023 006 12/30/2022 1400MW-16 Aqueous 01/03/2023 007 12/31/2022 1115MW-17 Aqueous 01/03/2023 008 12/31/2022 1015MW-18 Aqueous 01/03/2023 009 01/02/2023 1400Leachate Unit I (E)Aqueous 01/03/2023 010 01/02/2023 1330Leachate Unit I (W)Aqueous 01/03/2023 011 12/31/2022 1615MW-2 Aqueous 01/03/2023 012 12/31/2022 1145MW-6 Aqueous 01/03/2023 013 12/31/2022 1330MW-7 Aqueous 01/03/2023 014 12/31/2022 1300MW-8 Aqueous 01/03/2023 015 12/31/2022 1215MW-9 Aqueous 01/03/2023 016 12/31/2022 1600MW-10A Aqueous 01/03/2023 017 12/31/2022 1530MW-19 Aqueous 01/03/2023 (17 samples) 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 5 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-2 YA03041-011 12/31/2022 1615 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/08/2023 2200 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND L 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D ND 1ug/L0.401.0 Bromochloromethane 74-97-5 8260D ND 1ug/L0.401.0 Bromodichloromethane 75-27-4 8260D ND 1ug/L0.401.0 Bromoform 75-25-2 8260D ND 1ug/L0.401.0 Bromomethane (Methyl bromide)74-83-9 8260D ND 1ug/L0.402.0 2-Butanone (MEK)78-93-3 8260D ND L 1ug/L2.010 Carbon disulfide 75-15-0 8260D ND 1ug/L0.401.0 Carbon tetrachloride 56-23-5 8260D ND 1ug/L0.401.0 Chlorobenzene 108-90-7 8260D ND 1ug/L0.401.0 Chloroethane 75-00-3 8260D ND 1ug/L0.402.0 Chloroform 67-66-3 8260D ND 1ug/L0.401.0 Chloromethane (Methyl chloride)74-87-3 8260D ND 1ug/L0.501.0 1,2-Dibromo-3-chloropropane (DBCP)96-12-8 8260D ND 1ug/L0.401.0 Dibromochloromethane 124-48-1 8260D ND 1ug/L0.401.0 1,2-Dibromoethane (EDB)106-93-4 8260D ND 1ug/L0.401.0 Dibromomethane (Methylene bromide)74-95-3 8260D ND 1ug/L0.401.0 trans-1,4-Dichloro-2-butene 110-57-6 8260D ND 1ug/L0.502.0 1,2-Dichlorobenzene 95-50-1 8260D ND 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D ND 1ug/L0.401.0 1,1-Dichloroethane 75-34-3 8260D 1.4 1ug/L0.401.0 1,2-Dichloroethane 107-06-2 8260D ND 1ug/L0.401.0 1,1-Dichloroethene 75-35-4 8260D ND 1ug/L0.401.0 cis-1,2-Dichloroethene 156-59-2 8260D 0.64 J 1ug/L0.401.0 trans-1,2-Dichloroethene 156-60-5 8260D ND 1ug/L0.401.0 1,2-Dichloropropane 78-87-5 8260D ND 1ug/L0.401.0 cis-1,3-Dichloropropene 10061-01-5 8260D ND 1ug/L0.401.0 trans-1,3-Dichloropropene 10061-02-6 8260D ND 1ug/L0.401.0 Ethylbenzene 100-41-4 8260D ND 1ug/L0.401.0 2-Hexanone 591-78-6 8260D ND 1ug/L2.010 Methyl iodide (Iodomethane)74-88-4 8260D ND 1ug/L0.405.0 4-Methyl-2-pentanone 108-10-1 8260D ND 1ug/L2.010 Methylene chloride 75-09-2 8260D ND 1ug/L0.401.0 Styrene 100-42-5 8260D ND 1ug/L0.411.0 1,1,1,2-Tetrachloroethane 630-20-6 8260D ND 1ug/L0.401.0 1,1,2,2-Tetrachloroethane 79-34-5 8260D ND 1ug/L0.401.0 Tetrachloroethene 127-18-4 8260D ND 1ug/L0.401.0 Toluene 108-88-3 8260D ND 1ug/L0.401.0 1,1,1-Trichloroethane 71-55-6 8260D ND 1ug/L0.401.0 1,1,2-Trichloroethane 79-00-5 8260D ND 1ug/L0.401.0 Trichloroethene 79-01-6 8260D ND 1ug/L0.401.0 Trichlorofluoromethane 75-69-4 8260D ND 1ug/L0.401.0 1,2,3-Trichloropropane 96-18-4 8260D ND 1ug/L0.401.0 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 63 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-2 YA03041-011 12/31/2022 1615 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/08/2023 2200 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Vinyl acetate 108-05-4 8260D ND 1ug/L1.25.0 Vinyl chloride 75-01-4 8260D ND 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D ND 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 105 70-130 1,2-Dichloroethane-d4 110 70-130 Toluene-d8 112 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 64 of 159 ICP-MS Metals Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-2 YA03041-011 12/31/2022 1615 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 3005A 6020B 1 01/05/2023 1543 BNW 01/04/2023 1535 64070 2 3005A 6020B 1 01/06/2023 1404 BNW 01/04/2023 1535 64070 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Antimony 7440-36-0 6020B ND 1ug/L0.502.0 Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 120 1ug/L1.35.0 Beryllium 7440-41-7 6020B 0.17 J 1ug/L0.150.40 Cadmium 7440-43-9 6020B 0.60 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Cobalt 7440-48-4 6020B 11 1ug/L1.35.0 Copper 7440-50-8 6020B ND 1ug/L1.35.0 Lead 7439-92-1 6020B 0.28 J 1ug/L0.251.0 Nickel 7440-02-0 6020B 12 1ug/L1.35.0 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 Thallium 7440-28-0 6020B 0.85 2ug/L0.150.50 Vanadium 7440-62-2 6020B ND 1ug/L2.55.0 Zinc 7440-66-6 6020B 34 1ug/L2.510 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 65 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-6 YA03041-012 12/31/2022 1145 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/08/2023 2340 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND L 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D ND 1ug/L0.401.0 Bromochloromethane 74-97-5 8260D ND 1ug/L0.401.0 Bromodichloromethane 75-27-4 8260D ND 1ug/L0.401.0 Bromoform 75-25-2 8260D ND 1ug/L0.401.0 Bromomethane (Methyl bromide)74-83-9 8260D ND 1ug/L0.402.0 2-Butanone (MEK)78-93-3 8260D ND L 1ug/L2.010 Carbon disulfide 75-15-0 8260D ND 1ug/L0.401.0 Carbon tetrachloride 56-23-5 8260D ND 1ug/L0.401.0 Chlorobenzene 108-90-7 8260D ND 1ug/L0.401.0 Chloroethane 75-00-3 8260D ND 1ug/L0.402.0 Chloroform 67-66-3 8260D ND 1ug/L0.401.0 Chloromethane (Methyl chloride)74-87-3 8260D ND 1ug/L0.501.0 1,2-Dibromo-3-chloropropane (DBCP)96-12-8 8260D ND 1ug/L0.401.0 Dibromochloromethane 124-48-1 8260D ND 1ug/L0.401.0 1,2-Dibromoethane (EDB)106-93-4 8260D ND 1ug/L0.401.0 Dibromomethane (Methylene bromide)74-95-3 8260D ND 1ug/L0.401.0 trans-1,4-Dichloro-2-butene 110-57-6 8260D ND 1ug/L0.502.0 1,2-Dichlorobenzene 95-50-1 8260D ND 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D ND 1ug/L0.401.0 1,1-Dichloroethane 75-34-3 8260D ND 1ug/L0.401.0 1,2-Dichloroethane 107-06-2 8260D ND 1ug/L0.401.0 1,1-Dichloroethene 75-35-4 8260D ND 1ug/L0.401.0 cis-1,2-Dichloroethene 156-59-2 8260D ND 1ug/L0.401.0 trans-1,2-Dichloroethene 156-60-5 8260D ND 1ug/L0.401.0 1,2-Dichloropropane 78-87-5 8260D ND 1ug/L0.401.0 cis-1,3-Dichloropropene 10061-01-5 8260D ND 1ug/L0.401.0 trans-1,3-Dichloropropene 10061-02-6 8260D ND 1ug/L0.401.0 Ethylbenzene 100-41-4 8260D ND 1ug/L0.401.0 2-Hexanone 591-78-6 8260D ND 1ug/L2.010 Methyl iodide (Iodomethane)74-88-4 8260D ND 1ug/L0.405.0 4-Methyl-2-pentanone 108-10-1 8260D ND 1ug/L2.010 Methylene chloride 75-09-2 8260D ND 1ug/L0.401.0 Styrene 100-42-5 8260D ND 1ug/L0.411.0 1,1,1,2-Tetrachloroethane 630-20-6 8260D ND 1ug/L0.401.0 1,1,2,2-Tetrachloroethane 79-34-5 8260D ND 1ug/L0.401.0 Tetrachloroethene 127-18-4 8260D ND 1ug/L0.401.0 Toluene 108-88-3 8260D ND 1ug/L0.401.0 1,1,1-Trichloroethane 71-55-6 8260D ND 1ug/L0.401.0 1,1,2-Trichloroethane 79-00-5 8260D ND 1ug/L0.401.0 Trichloroethene 79-01-6 8260D ND 1ug/L0.401.0 Trichlorofluoromethane 75-69-4 8260D ND 1ug/L0.401.0 1,2,3-Trichloropropane 96-18-4 8260D ND 1ug/L0.401.0 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 66 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-6 YA03041-012 12/31/2022 1145 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/08/2023 2340 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Vinyl acetate 108-05-4 8260D ND 1ug/L1.25.0 Vinyl chloride 75-01-4 8260D ND 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D ND 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 106 70-130 1,2-Dichloroethane-d4 108 70-130 Toluene-d8 112 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 67 of 159 ICP-MS Metals Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-6 YA03041-012 12/31/2022 1145 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 3005A 6020B 1 01/05/2023 1554 BNW 01/04/2023 1535 64070 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Antimony 7440-36-0 6020B ND 1ug/L0.502.0 Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 61 1ug/L1.35.0 Beryllium 7440-41-7 6020B ND 1ug/L0.150.40 Cadmium 7440-43-9 6020B 0.34 J 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Cobalt 7440-48-4 6020B ND 1ug/L1.35.0 Copper 7440-50-8 6020B ND 1ug/L1.35.0 Lead 7439-92-1 6020B 0.40 J 1ug/L0.251.0 Nickel 7440-02-0 6020B ND 1ug/L1.35.0 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 Thallium 7440-28-0 6020B ND 1ug/L0.150.50 Vanadium 7440-62-2 6020B ND 1ug/L2.55.0 Zinc 7440-66-6 6020B 3.0 J 1ug/L2.510 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 68 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-7 YA03041-013 12/31/2022 1330 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/09/2023 0004 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND L 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D ND 1ug/L0.401.0 Bromochloromethane 74-97-5 8260D ND 1ug/L0.401.0 Bromodichloromethane 75-27-4 8260D ND 1ug/L0.401.0 Bromoform 75-25-2 8260D ND 1ug/L0.401.0 Bromomethane (Methyl bromide)74-83-9 8260D ND 1ug/L0.402.0 2-Butanone (MEK)78-93-3 8260D ND L 1ug/L2.010 Carbon disulfide 75-15-0 8260D ND 1ug/L0.401.0 Carbon tetrachloride 56-23-5 8260D ND 1ug/L0.401.0 Chlorobenzene 108-90-7 8260D ND 1ug/L0.401.0 Chloroethane 75-00-3 8260D ND 1ug/L0.402.0 Chloroform 67-66-3 8260D ND 1ug/L0.401.0 Chloromethane (Methyl chloride)74-87-3 8260D ND 1ug/L0.501.0 1,2-Dibromo-3-chloropropane (DBCP)96-12-8 8260D ND 1ug/L0.401.0 Dibromochloromethane 124-48-1 8260D ND 1ug/L0.401.0 1,2-Dibromoethane (EDB)106-93-4 8260D ND 1ug/L0.401.0 Dibromomethane (Methylene bromide)74-95-3 8260D ND 1ug/L0.401.0 trans-1,4-Dichloro-2-butene 110-57-6 8260D ND 1ug/L0.502.0 1,2-Dichlorobenzene 95-50-1 8260D ND 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D ND 1ug/L0.401.0 1,1-Dichloroethane 75-34-3 8260D ND 1ug/L0.401.0 1,2-Dichloroethane 107-06-2 8260D ND 1ug/L0.401.0 1,1-Dichloroethene 75-35-4 8260D ND 1ug/L0.401.0 cis-1,2-Dichloroethene 156-59-2 8260D ND 1ug/L0.401.0 trans-1,2-Dichloroethene 156-60-5 8260D ND 1ug/L0.401.0 1,2-Dichloropropane 78-87-5 8260D ND 1ug/L0.401.0 cis-1,3-Dichloropropene 10061-01-5 8260D ND 1ug/L0.401.0 trans-1,3-Dichloropropene 10061-02-6 8260D ND 1ug/L0.401.0 Ethylbenzene 100-41-4 8260D ND 1ug/L0.401.0 2-Hexanone 591-78-6 8260D ND 1ug/L2.010 Methyl iodide (Iodomethane)74-88-4 8260D ND 1ug/L0.405.0 4-Methyl-2-pentanone 108-10-1 8260D ND 1ug/L2.010 Methylene chloride 75-09-2 8260D ND 1ug/L0.401.0 Styrene 100-42-5 8260D ND 1ug/L0.411.0 1,1,1,2-Tetrachloroethane 630-20-6 8260D ND 1ug/L0.401.0 1,1,2,2-Tetrachloroethane 79-34-5 8260D ND 1ug/L0.401.0 Tetrachloroethene 127-18-4 8260D ND 1ug/L0.401.0 Toluene 108-88-3 8260D ND 1ug/L0.401.0 1,1,1-Trichloroethane 71-55-6 8260D ND 1ug/L0.401.0 1,1,2-Trichloroethane 79-00-5 8260D ND 1ug/L0.401.0 Trichloroethene 79-01-6 8260D ND 1ug/L0.401.0 Trichlorofluoromethane 75-69-4 8260D ND 1ug/L0.401.0 1,2,3-Trichloropropane 96-18-4 8260D ND 1ug/L0.401.0 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 69 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-7 YA03041-013 12/31/2022 1330 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/09/2023 0004 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Vinyl acetate 108-05-4 8260D ND 1ug/L1.25.0 Vinyl chloride 75-01-4 8260D ND 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D ND 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 105 70-130 1,2-Dichloroethane-d4 109 70-130 Toluene-d8 112 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 70 of 159 ICP-MS Metals Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-7 YA03041-013 12/31/2022 1330 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 3005A 6020B 1 01/05/2023 1707 BNW 01/04/2023 1535 64070 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Antimony 7440-36-0 6020B ND 1ug/L0.502.0 Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 110 1ug/L1.35.0 Beryllium 7440-41-7 6020B 0.16 J 1ug/L0.150.40 Cadmium 7440-43-9 6020B 0.47 J 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Cobalt 7440-48-4 6020B 2.9 J 1ug/L1.35.0 Copper 7440-50-8 6020B 1.4 J 1ug/L1.35.0 Lead 7439-92-1 6020B ND 1ug/L0.251.0 Nickel 7440-02-0 6020B 1.6 J 1ug/L1.35.0 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 Thallium 7440-28-0 6020B ND 1ug/L0.150.50 Vanadium 7440-62-2 6020B ND 1ug/L2.55.0 Zinc 7440-66-6 6020B 7.9 J 1ug/L2.510 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 71 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-8 YA03041-014 12/31/2022 1300 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/09/2023 0029 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND L 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D ND 1ug/L0.401.0 Bromochloromethane 74-97-5 8260D ND 1ug/L0.401.0 Bromodichloromethane 75-27-4 8260D ND 1ug/L0.401.0 Bromoform 75-25-2 8260D ND 1ug/L0.401.0 Bromomethane (Methyl bromide)74-83-9 8260D ND 1ug/L0.402.0 2-Butanone (MEK)78-93-3 8260D ND L 1ug/L2.010 Carbon disulfide 75-15-0 8260D ND 1ug/L0.401.0 Carbon tetrachloride 56-23-5 8260D ND 1ug/L0.401.0 Chlorobenzene 108-90-7 8260D ND 1ug/L0.401.0 Chloroethane 75-00-3 8260D ND 1ug/L0.402.0 Chloroform 67-66-3 8260D ND 1ug/L0.401.0 Chloromethane (Methyl chloride)74-87-3 8260D ND 1ug/L0.501.0 1,2-Dibromo-3-chloropropane (DBCP)96-12-8 8260D ND 1ug/L0.401.0 Dibromochloromethane 124-48-1 8260D ND 1ug/L0.401.0 1,2-Dibromoethane (EDB)106-93-4 8260D ND 1ug/L0.401.0 Dibromomethane (Methylene bromide)74-95-3 8260D ND 1ug/L0.401.0 trans-1,4-Dichloro-2-butene 110-57-6 8260D ND 1ug/L0.502.0 1,2-Dichlorobenzene 95-50-1 8260D ND 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D ND 1ug/L0.401.0 1,1-Dichloroethane 75-34-3 8260D ND 1ug/L0.401.0 1,2-Dichloroethane 107-06-2 8260D ND 1ug/L0.401.0 1,1-Dichloroethene 75-35-4 8260D ND 1ug/L0.401.0 cis-1,2-Dichloroethene 156-59-2 8260D ND 1ug/L0.401.0 trans-1,2-Dichloroethene 156-60-5 8260D ND 1ug/L0.401.0 1,2-Dichloropropane 78-87-5 8260D ND 1ug/L0.401.0 cis-1,3-Dichloropropene 10061-01-5 8260D ND 1ug/L0.401.0 trans-1,3-Dichloropropene 10061-02-6 8260D ND 1ug/L0.401.0 Ethylbenzene 100-41-4 8260D ND 1ug/L0.401.0 2-Hexanone 591-78-6 8260D ND 1ug/L2.010 Methyl iodide (Iodomethane)74-88-4 8260D ND 1ug/L0.405.0 4-Methyl-2-pentanone 108-10-1 8260D ND 1ug/L2.010 Methylene chloride 75-09-2 8260D ND 1ug/L0.401.0 Styrene 100-42-5 8260D ND 1ug/L0.411.0 1,1,1,2-Tetrachloroethane 630-20-6 8260D ND 1ug/L0.401.0 1,1,2,2-Tetrachloroethane 79-34-5 8260D ND 1ug/L0.401.0 Tetrachloroethene 127-18-4 8260D ND 1ug/L0.401.0 Toluene 108-88-3 8260D ND 1ug/L0.401.0 1,1,1-Trichloroethane 71-55-6 8260D ND 1ug/L0.401.0 1,1,2-Trichloroethane 79-00-5 8260D ND 1ug/L0.401.0 Trichloroethene 79-01-6 8260D ND 1ug/L0.401.0 Trichlorofluoromethane 75-69-4 8260D ND 1ug/L0.401.0 1,2,3-Trichloropropane 96-18-4 8260D ND 1ug/L0.401.0 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 72 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-8 YA03041-014 12/31/2022 1300 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/09/2023 0029 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Vinyl acetate 108-05-4 8260D ND 1ug/L1.25.0 Vinyl chloride 75-01-4 8260D ND 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D ND 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 105 70-130 1,2-Dichloroethane-d4 107 70-130 Toluene-d8 111 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 73 of 159 ICP-MS Metals Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-8 YA03041-014 12/31/2022 1300 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 3005A 6020B 1 01/05/2023 1718 BNW 01/04/2023 1535 64070 2 3005A 6020B 1 01/06/2023 1414 BNW 01/04/2023 1535 64070 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Antimony 7440-36-0 6020B ND 1ug/L0.502.0 Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 71 1ug/L1.35.0 Beryllium 7440-41-7 6020B 0.75 1ug/L0.150.40 Cadmium 7440-43-9 6020B 0.33 J 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Cobalt 7440-48-4 6020B ND 1ug/L1.35.0 Copper 7440-50-8 6020B ND 1ug/L1.35.0 Lead 7439-92-1 6020B 1.8 1ug/L0.251.0 Nickel 7440-02-0 6020B ND 1ug/L1.35.0 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 Thallium 7440-28-0 6020B 0.22 J 2ug/L0.150.50 Vanadium 7440-62-2 6020B ND 1ug/L2.55.0 Zinc 7440-66-6 6020B 4.3 J 1ug/L2.510 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 74 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-9 YA03041-015 12/31/2022 1215 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/09/2023 0055 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND L 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D ND 1ug/L0.401.0 Bromochloromethane 74-97-5 8260D ND 1ug/L0.401.0 Bromodichloromethane 75-27-4 8260D ND 1ug/L0.401.0 Bromoform 75-25-2 8260D ND 1ug/L0.401.0 Bromomethane (Methyl bromide)74-83-9 8260D ND 1ug/L0.402.0 2-Butanone (MEK)78-93-3 8260D ND L 1ug/L2.010 Carbon disulfide 75-15-0 8260D ND 1ug/L0.401.0 Carbon tetrachloride 56-23-5 8260D ND 1ug/L0.401.0 Chlorobenzene 108-90-7 8260D ND 1ug/L0.401.0 Chloroethane 75-00-3 8260D ND 1ug/L0.402.0 Chloroform 67-66-3 8260D ND 1ug/L0.401.0 Chloromethane (Methyl chloride)74-87-3 8260D ND 1ug/L0.501.0 1,2-Dibromo-3-chloropropane (DBCP)96-12-8 8260D ND 1ug/L0.401.0 Dibromochloromethane 124-48-1 8260D ND 1ug/L0.401.0 1,2-Dibromoethane (EDB)106-93-4 8260D ND 1ug/L0.401.0 Dibromomethane (Methylene bromide)74-95-3 8260D ND 1ug/L0.401.0 trans-1,4-Dichloro-2-butene 110-57-6 8260D ND 1ug/L0.502.0 1,2-Dichlorobenzene 95-50-1 8260D ND 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D ND 1ug/L0.401.0 1,1-Dichloroethane 75-34-3 8260D ND 1ug/L0.401.0 1,2-Dichloroethane 107-06-2 8260D ND 1ug/L0.401.0 1,1-Dichloroethene 75-35-4 8260D ND 1ug/L0.401.0 cis-1,2-Dichloroethene 156-59-2 8260D ND 1ug/L0.401.0 trans-1,2-Dichloroethene 156-60-5 8260D ND 1ug/L0.401.0 1,2-Dichloropropane 78-87-5 8260D ND 1ug/L0.401.0 cis-1,3-Dichloropropene 10061-01-5 8260D ND 1ug/L0.401.0 trans-1,3-Dichloropropene 10061-02-6 8260D ND 1ug/L0.401.0 Ethylbenzene 100-41-4 8260D ND 1ug/L0.401.0 2-Hexanone 591-78-6 8260D ND 1ug/L2.010 Methyl iodide (Iodomethane)74-88-4 8260D ND 1ug/L0.405.0 4-Methyl-2-pentanone 108-10-1 8260D ND 1ug/L2.010 Methylene chloride 75-09-2 8260D ND 1ug/L0.401.0 Styrene 100-42-5 8260D ND 1ug/L0.411.0 1,1,1,2-Tetrachloroethane 630-20-6 8260D ND 1ug/L0.401.0 1,1,2,2-Tetrachloroethane 79-34-5 8260D ND 1ug/L0.401.0 Tetrachloroethene 127-18-4 8260D ND 1ug/L0.401.0 Toluene 108-88-3 8260D ND 1ug/L0.401.0 1,1,1-Trichloroethane 71-55-6 8260D ND 1ug/L0.401.0 1,1,2-Trichloroethane 79-00-5 8260D ND 1ug/L0.401.0 Trichloroethene 79-01-6 8260D ND 1ug/L0.401.0 Trichlorofluoromethane 75-69-4 8260D ND 1ug/L0.401.0 1,2,3-Trichloropropane 96-18-4 8260D ND 1ug/L0.401.0 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 75 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-9 YA03041-015 12/31/2022 1215 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/09/2023 0055 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Vinyl acetate 108-05-4 8260D ND 1ug/L1.25.0 Vinyl chloride 75-01-4 8260D ND 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D ND 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 103 70-130 1,2-Dichloroethane-d4 108 70-130 Toluene-d8 110 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 76 of 159 ICP-MS Metals Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-9 YA03041-015 12/31/2022 1215 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 3005A 6020B 1 01/05/2023 1728 BNW 01/04/2023 1535 64070 2 3005A 6020B 1 01/06/2023 1425 BNW 01/04/2023 1535 64070 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Antimony 7440-36-0 6020B ND 1ug/L0.502.0 Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 58 1ug/L1.35.0 Beryllium 7440-41-7 6020B 0.19 J 1ug/L0.150.40 Cadmium 7440-43-9 6020B 0.57 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Cobalt 7440-48-4 6020B 1.4 J 1ug/L1.35.0 Copper 7440-50-8 6020B 1.3 J 1ug/L1.35.0 Lead 7439-92-1 6020B 0.58 J 1ug/L0.251.0 Nickel 7440-02-0 6020B ND 1ug/L1.35.0 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 Thallium 7440-28-0 6020B 0.19 J 2ug/L0.150.50 Vanadium 7440-62-2 6020B ND 1ug/L2.55.0 Zinc 7440-66-6 6020B 4.2 J 1ug/L2.510 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 77 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-10A YA03041-016 12/31/2022 1600 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/09/2023 0120 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND L 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D ND 1ug/L0.401.0 Bromochloromethane 74-97-5 8260D ND 1ug/L0.401.0 Bromodichloromethane 75-27-4 8260D ND 1ug/L0.401.0 Bromoform 75-25-2 8260D ND 1ug/L0.401.0 Bromomethane (Methyl bromide)74-83-9 8260D ND 1ug/L0.402.0 2-Butanone (MEK)78-93-3 8260D ND L 1ug/L2.010 Carbon disulfide 75-15-0 8260D ND 1ug/L0.401.0 Carbon tetrachloride 56-23-5 8260D ND 1ug/L0.401.0 Chlorobenzene 108-90-7 8260D ND 1ug/L0.401.0 Chloroethane 75-00-3 8260D ND 1ug/L0.402.0 Chloroform 67-66-3 8260D ND 1ug/L0.401.0 Chloromethane (Methyl chloride)74-87-3 8260D ND 1ug/L0.501.0 1,2-Dibromo-3-chloropropane (DBCP)96-12-8 8260D ND 1ug/L0.401.0 Dibromochloromethane 124-48-1 8260D ND 1ug/L0.401.0 1,2-Dibromoethane (EDB)106-93-4 8260D ND 1ug/L0.401.0 Dibromomethane (Methylene bromide)74-95-3 8260D ND 1ug/L0.401.0 trans-1,4-Dichloro-2-butene 110-57-6 8260D ND 1ug/L0.502.0 1,2-Dichlorobenzene 95-50-1 8260D ND 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D ND 1ug/L0.401.0 1,1-Dichloroethane 75-34-3 8260D 1.3 1ug/L0.401.0 1,2-Dichloroethane 107-06-2 8260D ND 1ug/L0.401.0 1,1-Dichloroethene 75-35-4 8260D ND 1ug/L0.401.0 cis-1,2-Dichloroethene 156-59-2 8260D 4.5 1ug/L0.401.0 trans-1,2-Dichloroethene 156-60-5 8260D ND 1ug/L0.401.0 1,2-Dichloropropane 78-87-5 8260D ND 1ug/L0.401.0 cis-1,3-Dichloropropene 10061-01-5 8260D ND 1ug/L0.401.0 trans-1,3-Dichloropropene 10061-02-6 8260D ND 1ug/L0.401.0 Ethylbenzene 100-41-4 8260D ND 1ug/L0.401.0 2-Hexanone 591-78-6 8260D ND 1ug/L2.010 Methyl iodide (Iodomethane)74-88-4 8260D ND 1ug/L0.405.0 4-Methyl-2-pentanone 108-10-1 8260D ND 1ug/L2.010 Methylene chloride 75-09-2 8260D ND 1ug/L0.401.0 Styrene 100-42-5 8260D ND 1ug/L0.411.0 1,1,1,2-Tetrachloroethane 630-20-6 8260D ND 1ug/L0.401.0 1,1,2,2-Tetrachloroethane 79-34-5 8260D ND 1ug/L0.401.0 Tetrachloroethene 127-18-4 8260D 1.8 1ug/L0.401.0 Toluene 108-88-3 8260D ND 1ug/L0.401.0 1,1,1-Trichloroethane 71-55-6 8260D ND 1ug/L0.401.0 1,1,2-Trichloroethane 79-00-5 8260D ND 1ug/L0.401.0 Trichloroethene 79-01-6 8260D 0.97 J 1ug/L0.401.0 Trichlorofluoromethane 75-69-4 8260D ND 1ug/L0.401.0 1,2,3-Trichloropropane 96-18-4 8260D ND 1ug/L0.401.0 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 78 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-10A YA03041-016 12/31/2022 1600 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/09/2023 0120 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Vinyl acetate 108-05-4 8260D ND 1ug/L1.25.0 Vinyl chloride 75-01-4 8260D ND 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D ND 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 106 70-130 1,2-Dichloroethane-d4 106 70-130 Toluene-d8 111 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 79 of 159 ICP-MS Metals Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-10A YA03041-016 12/31/2022 1600 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 3005A 6020B 1 01/05/2023 1739 BNW 01/04/2023 1535 64070 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Antimony 7440-36-0 6020B ND 1ug/L0.502.0 Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 250 1ug/L1.35.0 Beryllium 7440-41-7 6020B 0.67 1ug/L0.150.40 Cadmium 7440-43-9 6020B 0.63 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Cobalt 7440-48-4 6020B ND 1ug/L1.35.0 Copper 7440-50-8 6020B ND 1ug/L1.35.0 Lead 7439-92-1 6020B 0.37 J 1ug/L0.251.0 Nickel 7440-02-0 6020B ND 1ug/L1.35.0 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 Thallium 7440-28-0 6020B ND 1ug/L0.150.50 Vanadium 7440-62-2 6020B ND 1ug/L2.55.0 Zinc 7440-66-6 6020B 14 1ug/L2.510 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 80 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-19 YA03041-017 12/31/2022 1530 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/09/2023 0145 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND L 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D ND 1ug/L0.401.0 Bromochloromethane 74-97-5 8260D ND 1ug/L0.401.0 Bromodichloromethane 75-27-4 8260D ND 1ug/L0.401.0 Bromoform 75-25-2 8260D ND 1ug/L0.401.0 Bromomethane (Methyl bromide)74-83-9 8260D ND 1ug/L0.402.0 2-Butanone (MEK)78-93-3 8260D ND L 1ug/L2.010 Carbon disulfide 75-15-0 8260D ND 1ug/L0.401.0 Carbon tetrachloride 56-23-5 8260D ND 1ug/L0.401.0 Chlorobenzene 108-90-7 8260D ND 1ug/L0.401.0 Chloroethane 75-00-3 8260D ND 1ug/L0.402.0 Chloroform 67-66-3 8260D ND 1ug/L0.401.0 Chloromethane (Methyl chloride)74-87-3 8260D ND 1ug/L0.501.0 1,2-Dibromo-3-chloropropane (DBCP)96-12-8 8260D ND 1ug/L0.401.0 Dibromochloromethane 124-48-1 8260D ND 1ug/L0.401.0 1,2-Dibromoethane (EDB)106-93-4 8260D ND 1ug/L0.401.0 Dibromomethane (Methylene bromide)74-95-3 8260D ND 1ug/L0.401.0 trans-1,4-Dichloro-2-butene 110-57-6 8260D ND 1ug/L0.502.0 1,2-Dichlorobenzene 95-50-1 8260D ND 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D ND 1ug/L0.401.0 1,1-Dichloroethane 75-34-3 8260D ND 1ug/L0.401.0 1,2-Dichloroethane 107-06-2 8260D ND 1ug/L0.401.0 1,1-Dichloroethene 75-35-4 8260D ND 1ug/L0.401.0 cis-1,2-Dichloroethene 156-59-2 8260D ND 1ug/L0.401.0 trans-1,2-Dichloroethene 156-60-5 8260D ND 1ug/L0.401.0 1,2-Dichloropropane 78-87-5 8260D ND 1ug/L0.401.0 cis-1,3-Dichloropropene 10061-01-5 8260D ND 1ug/L0.401.0 trans-1,3-Dichloropropene 10061-02-6 8260D ND 1ug/L0.401.0 Ethylbenzene 100-41-4 8260D ND 1ug/L0.401.0 2-Hexanone 591-78-6 8260D ND 1ug/L2.010 Methyl iodide (Iodomethane)74-88-4 8260D ND 1ug/L0.405.0 4-Methyl-2-pentanone 108-10-1 8260D ND 1ug/L2.010 Methylene chloride 75-09-2 8260D ND 1ug/L0.401.0 Styrene 100-42-5 8260D ND 1ug/L0.411.0 1,1,1,2-Tetrachloroethane 630-20-6 8260D ND 1ug/L0.401.0 1,1,2,2-Tetrachloroethane 79-34-5 8260D ND 1ug/L0.401.0 Tetrachloroethene 127-18-4 8260D ND 1ug/L0.401.0 Toluene 108-88-3 8260D ND 1ug/L0.401.0 1,1,1-Trichloroethane 71-55-6 8260D ND 1ug/L0.401.0 1,1,2-Trichloroethane 79-00-5 8260D ND 1ug/L0.401.0 Trichloroethene 79-01-6 8260D ND 1ug/L0.401.0 Trichlorofluoromethane 75-69-4 8260D ND 1ug/L0.401.0 1,2,3-Trichloropropane 96-18-4 8260D ND 1ug/L0.401.0 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 81 of 159 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-19 YA03041-017 12/31/2022 1530 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/09/2023 0145 JMM2 64372 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Vinyl acetate 108-05-4 8260D ND 1ug/L1.25.0 Vinyl chloride 75-01-4 8260D ND 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D ND 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 104 70-130 1,2-Dichloroethane-d4 106 70-130 Toluene-d8 111 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 82 of 159 ICP-MS Metals Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-19 YA03041-017 12/31/2022 1530 01/03/2023 Aqueous Project Name: Gaston County-Hardin Landfill Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 3005A 6020B 1 01/05/2023 1749 BNW 01/04/2023 1535 64070 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Antimony 7440-36-0 6020B ND 1ug/L0.502.0 Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 33 1ug/L1.35.0 Beryllium 7440-41-7 6020B ND 1ug/L0.150.40 Cadmium 7440-43-9 6020B 0.16 J 1ug/L0.130.50 Chromium 7440-47-3 6020B 2.0 J 1ug/L1.35.0 Cobalt 7440-48-4 6020B ND 1ug/L1.35.0 Copper 7440-50-8 6020B ND 1ug/L1.35.0 Lead 7439-92-1 6020B ND 1ug/L0.251.0 Nickel 7440-02-0 6020B ND 1ug/L1.35.0 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 Thallium 7440-28-0 6020B ND 1ug/L0.150.50 Vanadium 7440-62-2 6020B ND 1ug/L2.55.0 Zinc 7440-66-6 6020B 2.5 J 1ug/L2.510 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 83 of 159 QC Summary 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 84 of 159 Inorganic non-metals - BOD Blank and GGA Batch:SCF: SCF Range: 64056 0.6 - 1.0Analytical Method:SM 5210B-2011 Matrix:Aqueous 0.6 Sample ID Result Q Limit Analysis DateDeplAvg. Depl (mg/L) Avg. Result (mg/L)Prep Date YQ64056-041 (Blank)01/09/2023 12450.2 01/04/2023 1341-0.01 YQ64056-141 (Blank)01/09/2023 12460.2 01/04/2023 1341-0.09 YQ64056-241 (Blank)01/09/2023 12460.2-0.04 01/04/2023 1341-0.02 YQ64056-035 (GGA)194 01/09/2023 1249167.5-228.5 01/04/2023 1347 YQ64056-135 (GGA)202 01/09/2023 1250167.5-228.5 01/04/2023 1347 YQ64056-235 (GGA)213.5 01/09/2023 1249167.5-228.5 01/04/2023 1347203.2 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 85 of 159 Inorganic non-metals - MB Batch: Sample ID:YQ64094-001 64094 Analytical Method:365.1 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Orthophosphate ND 01/04/2023 14430.050 0.050 mg/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 86 of 159 Inorganic non-metals - LCS Batch: Sample ID:YQ64094-002 64094 Analytical Method:365.1 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(mg/L)(mg/L) Orthophosphate 0.23 01/04/2023 1759910.25 90-1101 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 87 of 159 Inorganic non-metals - MS Batch: Sample ID:YA03041-010MS 64094 Analytical Method:365.1 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(mg/L)(mg/L)(mg/L) Orthophosphate 0.18 01/04/2023 1759N430.25 90-1100.070 1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 88 of 159 Inorganic non-metals - MSD Batch: Sample ID:YA03041-010MD 64094 Analytical Method:365.1 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(mg/L)(mg/L)(mg/L) Orthophosphate 0.19 01/04/2023 1759N490.25 90-1107.9 200.070 1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 89 of 159 Inorganic non-metals - MB Batch: Sample ID:YQ64100-001 64100 Analytical Method:353.2 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Nitrate - N ND 01/04/2023 07400.020 0.010 mg/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 90 of 159 Inorganic non-metals - LCS Batch: Sample ID:YQ64100-002 64100 Analytical Method:353.2 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(mg/L)(mg/L) Nitrate - N 0.40 01/04/2023 0742990.40 90-1101 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 91 of 159 Inorganic non-metals - MB Batch: Sample ID:YQ64190-001 64190 Analytical Method:SM 5220D-2011 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil COD ND 01/06/2023 11022020mg/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 92 of 159 Inorganic non-metals - LCS Batch: Sample ID:YQ64190-002 64190 Analytical Method:SM 5220D-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(mg/L)(mg/L) COD 400 01/06/2023 110210140095-1051 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 93 of 159 Inorganic non-metals - MB Batch: Sample ID:YQ64257-001 64257 Analytical Method:SM 4500-S2 F-2011 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Sulfide ND 01/05/2023 16371.0 1.0 mg/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 94 of 159 Inorganic non-metals - LCS Batch: Sample ID:YQ64257-002 64257 Analytical Method:SM 4500-S2 F-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(mg/L)(mg/L) Sulfide 9.5 01/05/2023 1637951080-1201 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 95 of 159 Inorganic non-metals - LCSD Batch: Sample ID:YQ64257-003 64257 Analytical Method:SM 4500-S2 F-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD LimitDil(mg/L)(mg/L) Sulfide 9.5 01/05/2023 1637951080-1200.00 201 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 96 of 159 Inorganic non-metals - MB Batch:Prep Method: Prep Date: Sample ID:YQ64483-001 64483 9012B 01/10/2023 1157Analytical Method:9012B Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Cyanide - Total ND 01/10/2023 17200.010 0.0040 mg/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 97 of 159 Inorganic non-metals - LCS Batch:Prep Method: Prep Date: Sample ID:YQ64483-002 64483 9012B 01/10/2023 1157Analytical Method:9012B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(mg/L)(mg/L) Cyanide - Total 0.097 01/10/2023 1728970.10 90-1101 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 98 of 159 Inorganic non-metals - MB Batch: Sample ID:YQ64716-001 64716 Analytical Method:300.0 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Sulfate ND 01/11/2023 16031.0 0.25 mg/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 99 of 159 Inorganic non-metals - LCS Batch: Sample ID:YQ64716-002 64716 Analytical Method:300.0 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(mg/L)(mg/L) Sulfate 20 01/11/2023 15401012090-1101 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 100 of 159 Volatile Organic Compounds by GC/MS (SIM) - MB Batch:Prep Method: Sample ID:YQ64214-001 64214 5030B Analytical Method:8260D (SIM) Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil 1,4-Dioxane ND 01/05/2023 11133.0 1.0 ug/L1 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 93 40-170 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 101 of 159 Volatile Organic Compounds by GC/MS (SIM) - LCS Batch:Prep Method: Sample ID:YQ64214-002 64214 5030B Analytical Method:8260D (SIM) Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) 1,4-Dioxane 52 01/05/2023 10001045070-1301 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 118 40-170 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 102 of 159 Volatile Organic Compounds by GC/MS (SIM) - MB Batch:Prep Method: Sample ID:YQ64337-001 64337 5030B Analytical Method:8260D (SIM) Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil 1,4-Dioxane ND 01/06/2023 15513.0 1.0 ug/L1 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 93 40-170 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 103 of 159 Volatile Organic Compounds by GC/MS (SIM) - LCS Batch:Prep Method: Sample ID:YQ64337-002 64337 5030B Analytical Method:8260D (SIM) Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) 1,4-Dioxane 51 01/06/2023 13491025070-1301 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 107 40-170 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 104 of 159 Volatile Organic Compounds by GC/MS (SIM) - LCSD Batch:Prep Method: Sample ID:YQ64337-003 64337 5030B Analytical Method:8260D (SIM) Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD LimitDil(ug/L)(ug/L) 1,4-Dioxane 46 01/06/2023 1414915070-13011 201 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 99 40-170 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 105 of 159 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64369-001 64369 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Acetone ND 01/07/2023 2121205.0 ug/L1 Acetonitrile ND 01/07/2023 21215015ug/L1 Acrolein ND 01/07/2023 2121204.0 ug/L1 Acrylonitrile ND 01/07/2023 2121200.80 ug/L1 Benzene ND 01/07/2023 21211.0 0.40 ug/L1 Bromobenzene ND 01/07/2023 21211.0 0.40 ug/L1 Bromochloromethane ND 01/07/2023 21211.0 0.40 ug/L1 Bromodichloromethane ND 01/07/2023 21211.0 0.40 ug/L1 Bromoform ND 01/07/2023 21211.0 0.40 ug/L1 Bromomethane (Methyl bromide)ND 01/07/2023 21212.0 0.40 ug/L1 2-Butanone (MEK)ND 01/07/2023 2121102.0 ug/L1 Carbon disulfide ND 01/07/2023 21211.0 0.40 ug/L1 Carbon tetrachloride ND 01/07/2023 21211.0 0.40 ug/L1 2-Chloro-1,3-Butadiene (Chloroprene)ND 01/07/2023 21215.0 1.0 ug/L1 Chlorobenzene ND 01/07/2023 21211.0 0.40 ug/L1 Chloroethane ND 01/07/2023 21212.0 0.40 ug/L1 Chloroform ND 01/07/2023 21211.0 0.40 ug/L1 Chloromethane (Methyl chloride)ND 01/07/2023 21211.0 0.50 ug/L1 3-Chloropropene (Allyl chloride)ND 01/07/2023 21215.0 1.0 ug/L1 1,2-Dibromo-3-chloropropane (DBCP)ND 01/07/2023 21211.0 0.40 ug/L1 Dibromochloromethane ND 01/07/2023 21211.0 0.40 ug/L1 1,2-Dibromoethane (EDB)ND 01/07/2023 21211.0 0.40 ug/L1 Dibromomethane (Methylene bromide)ND 01/07/2023 21211.0 0.40 ug/L1 trans-1,4-Dichloro-2-butene ND 01/07/2023 21212.0 0.50 ug/L1 1,2-Dichlorobenzene ND 01/07/2023 21211.0 0.40 ug/L1 1,3-Dichlorobenzene ND 01/07/2023 21211.0 0.40 ug/L1 1,4-Dichlorobenzene ND 01/07/2023 21211.0 0.40 ug/L1 Dichlorodifluoromethane ND 01/07/2023 21212.0 0.60 ug/L1 1,1-Dichloroethane ND 01/07/2023 21211.0 0.40 ug/L1 1,2-Dichloroethane ND 01/07/2023 21211.0 0.40 ug/L1 1,1-Dichloroethene ND 01/07/2023 21211.0 0.40 ug/L1 cis-1,2-Dichloroethene ND 01/07/2023 21211.0 0.40 ug/L1 trans-1,2-Dichloroethene ND 01/07/2023 21211.0 0.40 ug/L1 1,2-Dichloropropane ND 01/07/2023 21211.0 0.40 ug/L1 1,3-Dichloropropane ND 01/07/2023 21211.0 0.40 ug/L1 2,2-Dichloropropane ND 01/07/2023 21211.0 0.40 ug/L1 1,1-Dichloropropene ND 01/07/2023 21212.0 0.40 ug/L1 cis-1,3-Dichloropropene ND 01/07/2023 21211.0 0.40 ug/L1 trans-1,3-Dichloropropene ND 01/07/2023 21211.0 0.40 ug/L1 1,4-Dioxane ND 01/07/2023 21215013ug/L1 Ethyl methacrylate ND 01/07/2023 21215.0 0.40 ug/L1 Ethylbenzene ND 01/07/2023 21211.0 0.40 ug/L1 2-Hexanone ND 01/07/2023 2121102.0 ug/L1 Isobutyl alcohol ND 01/07/2023 21215012ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 106 of 159 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64369-001 64369 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Methacrylonitrile ND 01/07/2023 21215.0 2.0 ug/L1 Methyl iodide (Iodomethane)ND 01/07/2023 21215.0 0.40 ug/L1 Methyl methacrylate ND 01/07/2023 21215.0 0.40 ug/L1 4-Methyl-2-pentanone ND 01/07/2023 2121102.0 ug/L1 Methylene chloride ND 01/07/2023 21211.0 0.40 ug/L1 Propionitrile (Ethyl cyanide)ND 01/07/2023 2121204.0 ug/L1 Styrene ND 01/07/2023 21211.0 0.41 ug/L1 1,1,1,2-Tetrachloroethane ND 01/07/2023 21211.0 0.40 ug/L1 1,1,2,2-Tetrachloroethane ND 01/07/2023 21211.0 0.40 ug/L1 Tetrachloroethene ND 01/07/2023 21211.0 0.40 ug/L1 Toluene ND 01/07/2023 21211.0 0.40 ug/L1 1,1,1-Trichloroethane ND 01/07/2023 21211.0 0.40 ug/L1 1,1,2-Trichloroethane ND 01/07/2023 21211.0 0.40 ug/L1 Trichloroethene ND 01/07/2023 21211.0 0.40 ug/L1 Trichlorofluoromethane ND 01/07/2023 21211.0 0.40 ug/L1 1,2,3-Trichloropropane ND 01/07/2023 21211.0 0.40 ug/L1 Vinyl acetate ND 01/07/2023 21215.0 1.2 ug/L1 Vinyl chloride ND 01/07/2023 21211.0 0.40 ug/L1 Xylenes (total)ND 01/07/2023 21211.0 0.40 ug/L1 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 106 70-130 1,2-Dichloroethane-d4 110 70-130 Toluene-d8 110 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 107 of 159 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64369-002 64369 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Acetone 140 01/07/2023 195313510060-1401 Acetonitrile 580 01/07/2023 195311650060-1401 Acrolein 460 01/07/2023 19539150060-1401 Acrylonitrile 100 01/07/2023 195310210070-1301 Benzene 49 01/07/2023 1953985070-1301 Bromobenzene 47 01/07/2023 1953945070-1301 Bromochloromethane 50 01/07/2023 1953995070-1301 Bromodichloromethane 47 01/07/2023 1953935070-1301 Bromoform 44 01/07/2023 1953885070-1301 Bromomethane (Methyl bromide)60 01/07/2023 19531205070-1301 2-Butanone (MEK)120 01/07/2023 195312010070-1301 Carbon disulfide 54 01/07/2023 19531095070-1301 Carbon tetrachloride 50 01/07/2023 19531015070-1301 2-Chloro-1,3-Butadiene (Chloroprene)52 01/07/2023 19531035070-1301 Chlorobenzene 49 01/07/2023 1953975070-1301 Chloroethane 52 01/07/2023 19531045070-1301 Chloroform 48 01/07/2023 1953975070-1301 Chloromethane (Methyl chloride)54 01/07/2023 19531085060-1401 3-Chloropropene (Allyl chloride)52 01/07/2023 19531055070-1301 1,2-Dibromo-3-chloropropane (DBCP)44 01/07/2023 1953885070-1301 Dibromochloromethane 46 01/07/2023 1953925070-1301 1,2-Dibromoethane (EDB)48 01/07/2023 1953955070-1301 Dibromomethane (Methylene bromide)49 01/07/2023 1953995070-1301 trans-1,4-Dichloro-2-butene 42 01/07/2023 1953855070-1301 1,2-Dichlorobenzene 49 01/07/2023 1953985070-1301 1,3-Dichlorobenzene 50 01/07/2023 19531015070-1301 1,4-Dichlorobenzene 49 01/07/2023 1953985070-1301 Dichlorodifluoromethane 52 01/07/2023 19531045060-1401 1,1-Dichloroethane 53 01/07/2023 19531055070-1301 1,2-Dichloroethane 51 01/07/2023 19531035070-1301 1,1-Dichloroethene 50 01/07/2023 1953995070-1301 cis-1,2-Dichloroethene 52 01/07/2023 19531045070-1301 trans-1,2-Dichloroethene 52 01/07/2023 19531045070-1301 1,2-Dichloropropane 50 01/07/2023 1953995070-1301 1,3-Dichloropropane 48 01/07/2023 1953965070-1301 2,2-Dichloropropane 54 01/07/2023 19531075070-1301 1,1-Dichloropropene 50 01/07/2023 19531005070-1301 cis-1,3-Dichloropropene 49 01/07/2023 1953975070-1301 trans-1,3-Dichloropropene 48 01/07/2023 1953965070-1301 1,4-Dioxane 820 01/07/2023 1953N16350060-1401 Ethyl methacrylate 47 01/07/2023 1953945070-1301 Ethylbenzene 49 01/07/2023 1953995070-1301 2-Hexanone 110 01/07/2023 195310910070-1301 Isobutyl alcohol 580 01/07/2023 195311650060-1401 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 108 of 159 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64369-002 64369 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Methacrylonitrile 260 01/07/2023 195310325070-1301 Methyl iodide (Iodomethane)53 01/07/2023 19531065070-1301 Methyl methacrylate 49 01/07/2023 1953975070-1301 4-Methyl-2-pentanone 95 01/07/2023 19539510070-1301 Methylene chloride 53 01/07/2023 19531065070-1301 Propionitrile (Ethyl cyanide)510 01/07/2023 195310350070-1301 Styrene 47 01/07/2023 1953955070-1301 1,1,1,2-Tetrachloroethane 48 01/07/2023 1953965070-1301 1,1,2,2-Tetrachloroethane 49 01/07/2023 1953985070-1301 Tetrachloroethene 48 01/07/2023 1953975070-1301 Toluene 49 01/07/2023 1953985070-1301 1,1,1-Trichloroethane 50 01/07/2023 1953995070-1301 1,1,2-Trichloroethane 49 01/07/2023 1953975070-1301 Trichloroethene 48 01/07/2023 1953975070-1301 Trichlorofluoromethane 52 01/07/2023 19531045070-1301 1,2,3-Trichloropropane 49 01/07/2023 1953975070-1301 Vinyl acetate 50 01/07/2023 19531015060-1401 Vinyl chloride 56 01/07/2023 19531125070-1301 Xylenes (total)94 01/07/2023 19539410070-1301 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 94 70-130 1,2-Dichloroethane-d4 96 70-130 Toluene-d8 99 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 109 of 159 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64369-001 64369 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Acetone ND 01/07/2023 2121205.0 ug/L1 Acrylonitrile ND 01/07/2023 2121200.80 ug/L1 Benzene ND 01/07/2023 21211.0 0.40 ug/L1 Bromochloromethane ND 01/07/2023 21211.0 0.40 ug/L1 Bromodichloromethane ND 01/07/2023 21211.0 0.40 ug/L1 Bromoform ND 01/07/2023 21211.0 0.40 ug/L1 Bromomethane (Methyl bromide)ND 01/07/2023 21212.0 0.40 ug/L1 2-Butanone (MEK)ND 01/07/2023 2121102.0 ug/L1 Carbon disulfide ND 01/07/2023 21211.0 0.40 ug/L1 Carbon tetrachloride ND 01/07/2023 21211.0 0.40 ug/L1 Chlorobenzene ND 01/07/2023 21211.0 0.40 ug/L1 Chloroethane ND 01/07/2023 21212.0 0.40 ug/L1 Chloroform ND 01/07/2023 21211.0 0.40 ug/L1 Chloromethane (Methyl chloride)ND 01/07/2023 21211.0 0.50 ug/L1 1,2-Dibromo-3-chloropropane (DBCP)ND 01/07/2023 21211.0 0.40 ug/L1 Dibromochloromethane ND 01/07/2023 21211.0 0.40 ug/L1 1,2-Dibromoethane (EDB)ND 01/07/2023 21211.0 0.40 ug/L1 Dibromomethane (Methylene bromide)ND 01/07/2023 21211.0 0.40 ug/L1 trans-1,4-Dichloro-2-butene ND 01/07/2023 21212.0 0.50 ug/L1 1,2-Dichlorobenzene ND 01/07/2023 21211.0 0.40 ug/L1 1,4-Dichlorobenzene ND 01/07/2023 21211.0 0.40 ug/L1 1,1-Dichloroethane ND 01/07/2023 21211.0 0.40 ug/L1 1,2-Dichloroethane ND 01/07/2023 21211.0 0.40 ug/L1 1,1-Dichloroethene ND 01/07/2023 21211.0 0.40 ug/L1 cis-1,2-Dichloroethene ND 01/07/2023 21211.0 0.40 ug/L1 trans-1,2-Dichloroethene ND 01/07/2023 21211.0 0.40 ug/L1 1,2-Dichloropropane ND 01/07/2023 21211.0 0.40 ug/L1 cis-1,3-Dichloropropene ND 01/07/2023 21211.0 0.40 ug/L1 trans-1,3-Dichloropropene ND 01/07/2023 21211.0 0.40 ug/L1 Ethylbenzene ND 01/07/2023 21211.0 0.40 ug/L1 2-Hexanone ND 01/07/2023 2121102.0 ug/L1 Methyl iodide (Iodomethane)ND 01/07/2023 21215.0 0.40 ug/L1 4-Methyl-2-pentanone ND 01/07/2023 2121102.0 ug/L1 Methylene chloride ND 01/07/2023 21211.0 0.40 ug/L1 Styrene ND 01/07/2023 21211.0 0.41 ug/L1 1,1,1,2-Tetrachloroethane ND 01/07/2023 21211.0 0.40 ug/L1 1,1,2,2-Tetrachloroethane ND 01/07/2023 21211.0 0.40 ug/L1 Tetrachloroethene ND 01/07/2023 21211.0 0.40 ug/L1 Toluene ND 01/07/2023 21211.0 0.40 ug/L1 1,1,1-Trichloroethane ND 01/07/2023 21211.0 0.40 ug/L1 1,1,2-Trichloroethane ND 01/07/2023 21211.0 0.40 ug/L1 Trichloroethene ND 01/07/2023 21211.0 0.40 ug/L1 Trichlorofluoromethane ND 01/07/2023 21211.0 0.40 ug/L1 1,2,3-Trichloropropane ND 01/07/2023 21211.0 0.40 ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 110 of 159 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64369-001 64369 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Vinyl acetate ND 01/07/2023 21215.0 1.2 ug/L1 Vinyl chloride ND 01/07/2023 21211.0 0.40 ug/L1 Xylenes (total)ND 01/07/2023 21211.0 0.40 ug/L1 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 106 70-130 1,2-Dichloroethane-d4 110 70-130 Toluene-d8 110 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 111 of 159 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64369-002 64369 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Acetone 140 01/07/2023 195313510060-1401 Acrylonitrile 100 01/07/2023 195310210070-1301 Benzene 49 01/07/2023 1953985070-1301 Bromochloromethane 50 01/07/2023 1953995070-1301 Bromodichloromethane 47 01/07/2023 1953935070-1301 Bromoform 44 01/07/2023 1953885070-1301 Bromomethane (Methyl bromide)60 01/07/2023 19531205070-1301 2-Butanone (MEK)120 01/07/2023 195312010070-1301 Carbon disulfide 54 01/07/2023 19531095070-1301 Carbon tetrachloride 50 01/07/2023 19531015070-1301 Chlorobenzene 49 01/07/2023 1953975070-1301 Chloroethane 52 01/07/2023 19531045070-1301 Chloroform 48 01/07/2023 1953975070-1301 Chloromethane (Methyl chloride)54 01/07/2023 19531085060-1401 1,2-Dibromo-3-chloropropane (DBCP)44 01/07/2023 1953885070-1301 Dibromochloromethane 46 01/07/2023 1953925070-1301 1,2-Dibromoethane (EDB)48 01/07/2023 1953955070-1301 Dibromomethane (Methylene bromide)49 01/07/2023 1953995070-1301 trans-1,4-Dichloro-2-butene 42 01/07/2023 1953855070-1301 1,2-Dichlorobenzene 49 01/07/2023 1953985070-1301 1,4-Dichlorobenzene 49 01/07/2023 1953985070-1301 1,1-Dichloroethane 53 01/07/2023 19531055070-1301 1,2-Dichloroethane 51 01/07/2023 19531035070-1301 1,1-Dichloroethene 50 01/07/2023 1953995070-1301 cis-1,2-Dichloroethene 52 01/07/2023 19531045070-1301 trans-1,2-Dichloroethene 52 01/07/2023 19531045070-1301 1,2-Dichloropropane 50 01/07/2023 1953995070-1301 cis-1,3-Dichloropropene 49 01/07/2023 1953975070-1301 trans-1,3-Dichloropropene 48 01/07/2023 1953965070-1301 Ethylbenzene 49 01/07/2023 1953995070-1301 2-Hexanone 110 01/07/2023 195310910070-1301 Methyl iodide (Iodomethane)53 01/07/2023 19531065070-1301 4-Methyl-2-pentanone 95 01/07/2023 19539510070-1301 Methylene chloride 53 01/07/2023 19531065070-1301 Styrene 47 01/07/2023 1953955070-1301 1,1,1,2-Tetrachloroethane 48 01/07/2023 1953965070-1301 1,1,2,2-Tetrachloroethane 49 01/07/2023 1953985070-1301 Tetrachloroethene 48 01/07/2023 1953975070-1301 Toluene 49 01/07/2023 1953985070-1301 1,1,1-Trichloroethane 50 01/07/2023 1953995070-1301 1,1,2-Trichloroethane 49 01/07/2023 1953975070-1301 Trichloroethene 48 01/07/2023 1953975070-1301 Trichlorofluoromethane 52 01/07/2023 19531045070-1301 1,2,3-Trichloropropane 49 01/07/2023 1953975070-1301 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 112 of 159 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64369-002 64369 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Vinyl acetate 50 01/07/2023 19531015060-1401 Vinyl chloride 56 01/07/2023 19531125070-1301 Xylenes (total)94 01/07/2023 19539410070-1301 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 94 70-130 1,2-Dichloroethane-d4 96 70-130 Toluene-d8 99 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 113 of 159 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64372-001 64372 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Acetone ND 01/08/2023 2033205.0 ug/L1 Acrylonitrile ND 01/08/2023 2033200.80 ug/L1 Benzene ND 01/08/2023 20331.0 0.40 ug/L1 Bromochloromethane ND 01/08/2023 20331.0 0.40 ug/L1 Bromodichloromethane ND 01/08/2023 20331.0 0.40 ug/L1 Bromoform ND 01/08/2023 20331.0 0.40 ug/L1 Bromomethane (Methyl bromide)ND 01/08/2023 20332.0 0.40 ug/L1 2-Butanone (MEK)ND 01/08/2023 2033102.0 ug/L1 Carbon disulfide ND 01/08/2023 20331.0 0.40 ug/L1 Carbon tetrachloride ND 01/08/2023 20331.0 0.40 ug/L1 Chlorobenzene ND 01/08/2023 20331.0 0.40 ug/L1 Chloroethane ND 01/08/2023 20332.0 0.40 ug/L1 Chloroform ND 01/08/2023 20331.0 0.40 ug/L1 Chloromethane (Methyl chloride)ND 01/08/2023 20331.0 0.50 ug/L1 1,2-Dibromo-3-chloropropane (DBCP)ND 01/08/2023 20331.0 0.40 ug/L1 Dibromochloromethane ND 01/08/2023 20331.0 0.40 ug/L1 1,2-Dibromoethane (EDB)ND 01/08/2023 20331.0 0.40 ug/L1 Dibromomethane (Methylene bromide)ND 01/08/2023 20331.0 0.40 ug/L1 trans-1,4-Dichloro-2-butene ND 01/08/2023 20332.0 0.50 ug/L1 1,2-Dichlorobenzene ND 01/08/2023 20331.0 0.40 ug/L1 1,4-Dichlorobenzene ND 01/08/2023 20331.0 0.40 ug/L1 1,1-Dichloroethane ND 01/08/2023 20331.0 0.40 ug/L1 1,2-Dichloroethane ND 01/08/2023 20331.0 0.40 ug/L1 1,1-Dichloroethene ND 01/08/2023 20331.0 0.40 ug/L1 cis-1,2-Dichloroethene ND 01/08/2023 20331.0 0.40 ug/L1 trans-1,2-Dichloroethene ND 01/08/2023 20331.0 0.40 ug/L1 1,2-Dichloropropane ND 01/08/2023 20331.0 0.40 ug/L1 cis-1,3-Dichloropropene ND 01/08/2023 20331.0 0.40 ug/L1 trans-1,3-Dichloropropene ND 01/08/2023 20331.0 0.40 ug/L1 Ethylbenzene ND 01/08/2023 20331.0 0.40 ug/L1 2-Hexanone ND 01/08/2023 2033102.0 ug/L1 Methyl iodide (Iodomethane)ND 01/08/2023 20335.0 0.40 ug/L1 4-Methyl-2-pentanone ND 01/08/2023 2033102.0 ug/L1 Methylene chloride ND 01/08/2023 20331.0 0.40 ug/L1 Styrene ND 01/08/2023 20331.0 0.41 ug/L1 1,1,1,2-Tetrachloroethane ND 01/08/2023 20331.0 0.40 ug/L1 1,1,2,2-Tetrachloroethane ND 01/08/2023 20331.0 0.40 ug/L1 Tetrachloroethene ND 01/08/2023 20331.0 0.40 ug/L1 Toluene ND 01/08/2023 20331.0 0.40 ug/L1 1,1,1-Trichloroethane ND 01/08/2023 20331.0 0.40 ug/L1 1,1,2-Trichloroethane ND 01/08/2023 20331.0 0.40 ug/L1 Trichloroethene ND 01/08/2023 20331.0 0.40 ug/L1 Trichlorofluoromethane ND 01/08/2023 20331.0 0.40 ug/L1 1,2,3-Trichloropropane ND 01/08/2023 20331.0 0.40 ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 114 of 159 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64372-001 64372 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Vinyl acetate ND 01/08/2023 20335.0 1.2 ug/L1 Vinyl chloride ND 01/08/2023 20331.0 0.40 ug/L1 Xylenes (total)ND 01/08/2023 20331.0 0.40 ug/L1 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 100 70-130 1,2-Dichloroethane-d4 106 70-130 Toluene-d8 108 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 115 of 159 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64372-002 64372 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Acetone 93 01/08/2023 17319310060-1401 Acrylonitrile 100 01/08/2023 173110110070-1301 Benzene 49 01/08/2023 1731985070-1301 Bromochloromethane 49 01/08/2023 1731995070-1301 Bromodichloromethane 48 01/08/2023 1731955070-1301 Bromoform 44 01/08/2023 1731885070-1301 Bromomethane (Methyl bromide)61 01/08/2023 17311235070-1301 2-Butanone (MEK)110 01/08/2023 173111010070-1301 Carbon disulfide 53 01/08/2023 17311065070-1301 Carbon tetrachloride 48 01/08/2023 1731975070-1301 Chlorobenzene 49 01/08/2023 1731995070-1301 Chloroethane 52 01/08/2023 17311045070-1301 Chloroform 49 01/08/2023 1731985070-1301 Chloromethane (Methyl chloride)55 01/08/2023 17311115060-1401 1,2-Dibromo-3-chloropropane (DBCP)43 01/08/2023 1731865070-1301 Dibromochloromethane 46 01/08/2023 1731925070-1301 1,2-Dibromoethane (EDB)48 01/08/2023 1731965070-1301 Dibromomethane (Methylene bromide)51 01/08/2023 17311025070-1301 trans-1,4-Dichloro-2-butene 43 01/08/2023 1731865070-1301 1,2-Dichlorobenzene 49 01/08/2023 1731995070-1301 1,4-Dichlorobenzene 49 01/08/2023 1731985070-1301 1,1-Dichloroethane 52 01/08/2023 17311035070-1301 1,2-Dichloroethane 51 01/08/2023 17311025070-1301 1,1-Dichloroethene 49 01/08/2023 1731985070-1301 cis-1,2-Dichloroethene 52 01/08/2023 17311055070-1301 trans-1,2-Dichloroethene 53 01/08/2023 17311055070-1301 1,2-Dichloropropane 51 01/08/2023 17311015070-1301 cis-1,3-Dichloropropene 49 01/08/2023 1731995070-1301 trans-1,3-Dichloropropene 48 01/08/2023 1731955070-1301 Ethylbenzene 49 01/08/2023 1731975070-1301 2-Hexanone 110 01/08/2023 173111210070-1301 Methyl iodide (Iodomethane)53 01/08/2023 17311065070-1301 4-Methyl-2-pentanone 97 01/08/2023 17319710070-1301 Methylene chloride 53 01/08/2023 17311065070-1301 Styrene 48 01/08/2023 1731975070-1301 1,1,1,2-Tetrachloroethane 48 01/08/2023 1731955070-1301 1,1,2,2-Tetrachloroethane 48 01/08/2023 1731965070-1301 Tetrachloroethene 47 01/08/2023 1731955070-1301 Toluene 49 01/08/2023 1731985070-1301 1,1,1-Trichloroethane 49 01/08/2023 1731975070-1301 1,1,2-Trichloroethane 50 01/08/2023 1731995070-1301 Trichloroethene 48 01/08/2023 1731975070-1301 Trichlorofluoromethane 52 01/08/2023 17311035070-1301 1,2,3-Trichloropropane 49 01/08/2023 1731995070-1301 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 116 of 159 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64372-002 64372 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Vinyl acetate 52 01/08/2023 17311045060-1401 Vinyl chloride 58 01/08/2023 17311175070-1301 Xylenes (total)94 01/08/2023 17319410070-1301 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 96 70-130 1,2-Dichloroethane-d4 94 70-130 Toluene-d8 99 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 117 of 159 Volatile Organic Compounds by GC/MS - LCSD Batch:Prep Method: Sample ID:YQ64372-003 64372 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD LimitDil(ug/L)(ug/L) Acetone 160 01/08/2023 2250N,+162100 60-14055 201 Acrylonitrile 110 01/08/2023 225010810070-1307.2 201 Benzene 49 01/08/2023 2250995070-1300.57 201 Bromochloromethane 51 01/08/2023 22501025070-1302.8 201 Bromodichloromethane 47 01/08/2023 2250955070-1300.49 201 Bromoform 43 01/08/2023 2250875070-1301.6 201 Bromomethane (Methyl bromide)65 01/08/2023 22501305070-1305.7 201 2-Butanone (MEK)140 01/08/2023 2250N,+136100 70-13021 201 Carbon disulfide 54 01/08/2023 22501085070-1301.5 201 Carbon tetrachloride 49 01/08/2023 2250985070-1301.1 201 Chlorobenzene 49 01/08/2023 2250995070-1300.32 201 Chloroethane 54 01/08/2023 22501095070-1304.2 201 Chloroform 50 01/08/2023 2250995070-1301.3 201 Chloromethane (Methyl chloride)56 01/08/2023 22501125060-1401.7 201 1,2-Dibromo-3-chloropropane (DBCP)41 01/08/2023 2250835070-1303.9 201 Dibromochloromethane 46 01/08/2023 2250935070-1300.11 201 1,2-Dibromoethane (EDB)49 01/08/2023 2250985070-1301.3 201 Dibromomethane (Methylene bromide)52 01/08/2023 22501035070-1301.1 201 trans-1,4-Dichloro-2-butene 43 01/08/2023 2250875070-1300.19 201 1,2-Dichlorobenzene 50 01/08/2023 2250995070-1300.69 201 1,4-Dichlorobenzene 48 01/08/2023 2250975070-1301.2 201 1,1-Dichloroethane 53 01/08/2023 22501065070-1301.9 201 1,2-Dichloroethane 53 01/08/2023 22501065070-1303.5 201 1,1-Dichloroethene 50 01/08/2023 22501005070-1302.3 201 cis-1,2-Dichloroethene 53 01/08/2023 22501065070-1301.0 201 trans-1,2-Dichloroethene 53 01/08/2023 22501075070-1301.6 201 1,2-Dichloropropane 51 01/08/2023 22501035070-1301.5 201 cis-1,3-Dichloropropene 49 01/08/2023 2250985070-1300.48 201 trans-1,3-Dichloropropene 46 01/08/2023 2250935070-1302.9 201 Ethylbenzene 49 01/08/2023 2250995070-1301.2 201 2-Hexanone 130 01/08/2023 225012610070-13012 201 Methyl iodide (Iodomethane)54 01/08/2023 22501075070-1301.8 201 4-Methyl-2-pentanone 96 01/08/2023 22509610070-1300.68 201 Methylene chloride 54 01/08/2023 22501085070-1302.2 201 Styrene 48 01/08/2023 2250975070-1300.30 201 1,1,1,2-Tetrachloroethane 48 01/08/2023 2250975070-1301.7 201 1,1,2,2-Tetrachloroethane 48 01/08/2023 2250965070-1300.096 201 Tetrachloroethene 48 01/08/2023 2250965070-1301.7 201 Toluene 49 01/08/2023 2250995070-1301.0 201 1,1,1-Trichloroethane 47 01/08/2023 2250955070-1302.3 201 1,1,2-Trichloroethane 50 01/08/2023 22501015070-1301.5 201 Trichloroethene 49 01/08/2023 2250995070-1302.1 201 Trichlorofluoromethane 56 01/08/2023 22501135070-1308.6 201 1,2,3-Trichloropropane 48 01/08/2023 2250965070-1303.4 201 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 118 of 159 Volatile Organic Compounds by GC/MS - LCSD Batch:Prep Method: Sample ID:YQ64372-003 64372 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD LimitDil(ug/L)(ug/L) Vinyl acetate 47 01/08/2023 2250935060-14011 201 Vinyl chloride 60 01/08/2023 22501195070-1302.1 201 Xylenes (total)95 01/08/2023 22509510070-1300.82 201 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 96 70-130 1,2-Dichloroethane-d4 96 70-130 Toluene-d8 100 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 119 of 159 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64475-001 64475 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Tetrachloroethene ND 01/09/2023 22221.0 0.40 ug/L1 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 92 70-130 1,2-Dichloroethane-d4 93 70-130 Toluene-d8 96 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 120 of 159 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64475-002 64475 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Tetrachloroethene 48 01/09/2023 2132965070-1301 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 94 70-130 1,2-Dichloroethane-d4 91 70-130 Toluene-d8 95 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 121 of 159 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64739-001 64739 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Acetone ND 01/12/2023 1229205.0 ug/L1 2-Butanone (MEK)ND 01/12/2023 1229102.0 ug/L1 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 116 70-130 1,2-Dichloroethane-d4 109 70-130 Toluene-d8 109 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 122 of 159 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64739-002 64739 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Acetone 84 01/12/2023 09338410060-1401 2-Butanone (MEK)99 01/12/2023 09339910070-1301 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 105 70-130 1,2-Dichloroethane-d4 103 70-130 Toluene-d8 104 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 123 of 159 Volatile Organic Compounds by GC/MS - LCSD Batch:Prep Method: Sample ID:YQ64739-003 64739 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD LimitDil(ug/L)(ug/L) Acetone 120 01/12/2023 1339+116100 60-14032 201 2-Butanone (MEK)120 01/12/2023 133911810070-13017 201 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 106 70-130 1,2-Dichloroethane-d4 104 70-130 Toluene-d8 105 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 124 of 159 Semivolatile Organic Compounds by GC/MS - MB Batch:Prep Method: Prep Date: Sample ID:YQ64097-001 64097 3520C 01/04/2023 1400Analytical Method:8270E Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Acenaphthene ND 01/07/2023 13060.20 0.040 ug/L1 Acenaphthylene ND 01/07/2023 13060.20 0.040 ug/L1 Acetophenone ND 01/07/2023 13060.80 0.50 ug/L1 2-Acetylaminofluorene ND 01/07/2023 1306101.7 ug/L1 4-Aminobiphenyl ND 01/07/2023 1306101.1 ug/L1 Anthracene ND 01/07/2023 13060.20 0.060 ug/L1 Benzo(a)anthracene ND 01/07/2023 13060.20 0.040 ug/L1 Benzo(a)pyrene ND 01/07/2023 13060.20 0.070 ug/L1 Benzo(b)fluoranthene ND 01/07/2023 13060.20 0.040 ug/L1 Benzo(g,h,i)perylene ND 01/07/2023 13060.20 0.040 ug/L1 Benzo(k)fluoranthene ND 01/07/2023 13060.20 0.040 ug/L1 Benzyl alcohol ND 01/07/2023 13064.0 2.0 ug/L1 4-Bromophenyl phenyl ether ND 01/07/2023 13060.80 0.50 ug/L1 Butyl benzyl phthalate ND 01/07/2023 13060.80 0.50 ug/L1 bis (2-Chloro-1-methylethyl) ether ND 01/07/2023 13060.80 0.50 ug/L1 4-Chloro-3-methyl phenol ND 01/07/2023 13060.80 0.50 ug/L1 4-Chloroaniline ND 01/07/2023 13061.6 0.50 ug/L1 Chlorobenzilate ND 01/07/2023 1306100.41 ug/L1 bis(2-Chloroethoxy)methane ND 01/07/2023 13060.80 0.50 ug/L1 bis(2-Chloroethyl)ether ND 01/07/2023 13060.80 0.50 ug/L1 2-Chloronaphthalene ND 01/07/2023 13060.80 0.50 ug/L1 2-Chlorophenol ND 01/07/2023 13060.80 0.50 ug/L1 4-Chlorophenyl phenyl ether ND 01/07/2023 13060.80 0.50 ug/L1 Chrysene ND 01/07/2023 13060.20 0.030 ug/L1 Dibenzo(a,h)anthracene ND 01/07/2023 13060.20 0.030 ug/L1 Dibenzofuran ND 01/07/2023 13060.80 0.50 ug/L1 1,2-Dichlorobenzene ND 01/07/2023 13060.80 0.50 ug/L1 1,3-Dichlorobenzene ND 01/07/2023 13060.80 0.50 ug/L1 1,4-Dichlorobenzene ND 01/07/2023 13060.80 0.50 ug/L1 3,3'-Dichlorobenzidine ND 01/07/2023 13064.0 1.8 ug/L1 2,4-Dichlorophenol ND 01/07/2023 13061.6 0.25 ug/L1 2,6-Dichlorophenol ND 01/07/2023 13060.80 0.23 ug/L1 0,0-Diethyl-0-2-pyrazinyl (Thionazin)ND 01/07/2023 1306100.35 ug/L1 Diethylphthalate ND 01/07/2023 13060.80 0.50 ug/L1 Dimethyl phthalate ND 01/07/2023 13060.80 0.50 ug/L1 p-(Dimethylamino)azobenzene ND 01/07/2023 1306100.53 ug/L1 7,12-Dimethylbenzo(a)anthracene ND 01/07/2023 1306101.8 ug/L1 2,4-Dimethylphenol ND 01/07/2023 13060.80 0.48 ug/L1 Di-n-butyl phthalate 0.52 01/07/2023 1306J0.80 0.50 ug/L1 4,6-Dinitro-2-methylphenol ND 01/07/2023 13064.0 1.0 ug/L1 2,4-Dinitrophenol ND 01/07/2023 13064.0 1.0 ug/L1 2,4-Dinitrotoluene ND 01/07/2023 13061.6 0.50 ug/L1 2,6-Dinitrotoluene ND 01/07/2023 13061.6 0.50 ug/L1 Di-n-octylphthalate ND 01/07/2023 13060.80 0.50 ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 125 of 159 Semivolatile Organic Compounds by GC/MS - MB Batch:Prep Method: Prep Date: Sample ID:YQ64097-001 64097 3520C 01/04/2023 1400Analytical Method:8270E Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Disulfoton ND 01/07/2023 1306100.25 ug/L1 Ethyl methanesulfonate ND 01/07/2023 1306100.42 ug/L1 Ethyl parathion ND 01/07/2023 1306102.2 ug/L1 bis(2-Ethylhexyl)phthalate ND 01/07/2023 13064.0 2.0 ug/L1 Fluoranthene ND 01/07/2023 13060.20 0.10 ug/L1 Fluorene ND 01/07/2023 13060.20 0.030 ug/L1 Hexachlorobenzene ND 01/07/2023 13060.80 0.50 ug/L1 Hexachlorobutadiene ND 01/07/2023 13060.80 0.50 ug/L1 Hexachlorocyclopentadiene ND 01/07/2023 13064.0 2.0 ug/L1 Hexachloroethane ND 01/07/2023 13060.80 0.31 ug/L1 Hexachloropropene ND 01/07/2023 1306102.0 ug/L1 Indeno(1,2,3-c,d)pyrene ND 01/07/2023 13060.20 0.040 ug/L1 Isodrin ND 01/07/2023 1306100.52 ug/L1 Isophorone ND 01/07/2023 13060.80 0.50 ug/L1 Isosafrole ND 01/07/2023 1306100.50 ug/L1 Methyl methanesulfonate ND 01/07/2023 1306101.0 ug/L1 Methyl parathion ND 01/07/2023 1306103.2 ug/L1 3-Methylcholanthrene ND 01/07/2023 1306100.98 ug/L1 2-Methylnaphthalene ND 01/07/2023 13060.20 0.040 ug/L1 2-Methylphenol ND 01/07/2023 13060.80 0.21 ug/L1 3+4-Methylphenol ND 01/07/2023 13061.6 1.5 ug/L1 Naphthalene ND 01/07/2023 13060.20 0.050 ug/L1 1,4-Naphthoquinone ND 01/07/2023 1306100.040 ug/L1 1-Naphthylamine ND 01/07/2023 1306103.0 ug/L1 2-Naphthylamine ND 01/07/2023 1306100.14 ug/L1 2-Nitroaniline ND 01/07/2023 13061.6 0.50 ug/L1 3-Nitroaniline ND 01/07/2023 13061.6 1.0 ug/L1 4-Nitroaniline ND 01/07/2023 13061.6 1.5 ug/L1 Nitrobenzene ND 01/07/2023 13060.80 0.55 ug/L1 5-Nitro-o-toluidine ND 01/07/2023 1306102.0 ug/L1 2-Nitrophenol ND 01/07/2023 13061.6 1.0 ug/L1 4-Nitrophenol ND 01/07/2023 13064.0 2.0 ug/L1 N-Nitroso-di-butylamine ND 01/07/2023 13062.0 0.21 ug/L1 N-Nitrosodiethylamine ND 01/07/2023 13061010ug/L1 N-Nitrosodimethylamine ND 01/07/2023 13060.80 0.50 ug/L1 N-Nitrosodi-n-propylamine ND 01/07/2023 13060.80 0.50 ug/L1 N-Nitrosodiphenylamine (Diphenylamine)ND 01/07/2023 13060.80 0.50 ug/L1 N-Nitrosomethylethylamine ND 01/07/2023 1306101.0 ug/L1 N-Nitrosopiperidine ND 01/07/2023 1306100.22 ug/L1 N-Nitrosopyrrolidine ND 01/07/2023 1306100.50 ug/L1 Pentachlorobenzene ND 01/07/2023 1306100.28 ug/L1 Pentachloronitrobenzene ND 01/07/2023 1306101.0 ug/L1 Pentachlorophenol ND 01/07/2023 13064.0 2.0 ug/L1 Phenacetin ND 01/07/2023 1306100.32 ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 126 of 159 Semivolatile Organic Compounds by GC/MS - MB Batch:Prep Method: Prep Date: Sample ID:YQ64097-001 64097 3520C 01/04/2023 1400Analytical Method:8270E Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Phenanthrene ND 01/07/2023 13060.20 0.060 ug/L1 Phenol ND 01/07/2023 13060.80 0.50 ug/L1 Phorate ND 01/07/2023 1306101.2 ug/L1 Pronamide ND 01/07/2023 1306101.5 ug/L1 Pyrene ND 01/07/2023 13060.20 0.10 ug/L1 Safrole ND 01/07/2023 1306100.26 ug/L1 1,2,4,5-Tetrachlorobenzene ND 01/07/2023 13060.80 0.25 ug/L1 2,3,4,6-Tetrachlorophenol ND 01/07/2023 13061.6 0.55 ug/L1 o-Toluidine ND 01/07/2023 1306100.92 ug/L1 1,2,4-Trichlorobenzene ND 01/07/2023 13060.80 0.37 ug/L1 2,4,5-Trichlorophenol ND 01/07/2023 13060.80 0.50 ug/L1 2,4,6-Trichlorophenol ND 01/07/2023 13060.80 0.50 ug/L1 0,0,0-Triethylphosphorothioate ND 01/07/2023 1306100.36 ug/L1 1,3,5-Trinitrobenzene ND 01/07/2023 1306100.75 ug/L1 Surrogate Q % Rec Acceptance Limit 2-Fluorobiphenyl 62 37-129 2-Fluorophenol 42 24-127 Nitrobenzene-d5 73 38-127 Phenol-d5 48 28-128 Terphenyl-d14 84 10-148 2,4,6-Tribromophenol 61 35-144 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 127 of 159 Semivolatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Prep Date: Sample ID:YQ64097-002 64097 3520C 01/04/2023 1400Analytical Method:8270E Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Acenaphthene 5.3 01/07/2023 1330668.0 30-1221 Acenaphthylene 5.7 01/07/2023 1330718.0 30-1301 Acetophenone 5.4 01/07/2023 1330688.0 30-1301 Anthracene 6.0 01/07/2023 1330758.0 30-1231 Benzo(a)anthracene 6.2 01/07/2023 1330778.0 40-1251 Benzo(a)pyrene 6.0 01/07/2023 1330758.0 40-1281 Benzo(b)fluoranthene 6.4 01/07/2023 1330798.0 32-1451 Benzo(g,h,i)perylene 6.6 01/07/2023 1330838.0 42-1281 Benzo(k)fluoranthene 6.4 01/07/2023 1330808.0 50-1351 Benzyl alcohol 2.1 01/07/2023 1330N268.0 30-1301 4-Bromophenyl phenyl ether 5.7 01/07/2023 1330718.0 30-1241 Butyl benzyl phthalate 7.2 01/07/2023 1330908.0 54-1351 bis (2-Chloro-1-methylethyl) ether 5.9 01/07/2023 1330748.0 34-1101 4-Chloro-3-methyl phenol 5.8 01/07/2023 1330728.0 30-1231 4-Chloroaniline 4.4 01/07/2023 1330558.0 12-1571 bis(2-Chloroethoxy)methane 5.7 01/07/2023 1330718.0 40-1191 bis(2-Chloroethyl)ether 5.8 01/07/2023 1330738.0 35-1141 2-Chloronaphthalene 5.2 01/07/2023 1330658.0 39-1281 2-Chlorophenol 4.6 01/07/2023 1330588.0 39-1151 4-Chlorophenyl phenyl ether 5.6 01/07/2023 1330708.0 30-1211 Chrysene 6.3 01/07/2023 1330788.0 50-1301 Dibenzo(a,h)anthracene 6.3 01/07/2023 1330788.0 30-1301 Dibenzofuran 5.0 01/07/2023 1330638.0 30-1181 1,2-Dichlorobenzene 4.5 01/07/2023 1330578.0 20-1101 1,3-Dichlorobenzene 4.4 01/07/2023 1330558.0 17-1121 1,4-Dichlorobenzene 4.4 01/07/2023 1330558.0 18-1131 3,3'-Dichlorobenzidine 5.9 01/07/2023 1330748.0 10-1261 2,4-Dichlorophenol 5.0 01/07/2023 1330638.0 30-1211 2,6-Dichlorophenol 5.2 01/07/2023 1330658.0 30-1301 Diethylphthalate 6.4 01/07/2023 1330808.0 40-1251 Dimethyl phthalate 5.8 01/07/2023 1330738.0 40-1271 2,4-Dimethylphenol 3.8 01/07/2023 1330488.0 20-1251 Di-n-butyl phthalate 7.4 01/07/2023 1330928.0 40-1271 4,6-Dinitro-2-methylphenol 5.7 01/07/2023 1330718.0 46-1341 2,4-Dinitrophenol 8.6 01/07/2023 1330541611-1261 2,4-Dinitrotoluene 5.7 01/07/2023 1330728.0 51-1281 2,6-Dinitrotoluene 5.3 01/07/2023 1330668.0 48-1331 Di-n-octylphthalate 6.9 01/07/2023 1330878.0 55-1431 bis(2-Ethylhexyl)phthalate 8.2 01/07/2023 13301028.0 50-1331 Fluoranthene 6.6 01/07/2023 1330838.0 40-1281 Fluorene 5.5 01/07/2023 1330698.0 30-1241 Hexachlorobenzene 5.9 01/07/2023 1330748.0 30-1251 Hexachlorobutadiene 4.5 01/07/2023 1330568.0 24-1101 Hexachlorocyclopentadiene 15 01/07/2023 1330374022-1221 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 128 of 159 Semivolatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Prep Date: Sample ID:YQ64097-002 64097 3520C 01/04/2023 1400Analytical Method:8270E Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Hexachloroethane 4.3 01/07/2023 1330548.0 28-1161 Indeno(1,2,3-c,d)pyrene 6.1 01/07/2023 1330768.0 50-1251 Isophorone 5.4 01/07/2023 1330688.0 30-1301 2-Methylnaphthalene 5.3 01/07/2023 1330668.0 40-1321 2-Methylphenol 5.1 01/07/2023 1330648.0 37-1151 3+4-Methylphenol 6.1 01/07/2023 1330778.0 44-1121 Naphthalene 5.3 01/07/2023 1330668.0 40-1221 2-Nitroaniline 6.3 01/07/2023 1330798.0 49-1281 3-Nitroaniline 5.1 01/07/2023 1330638.0 31-1281 4-Nitroaniline 6.6 01/07/2023 1330838.0 30-1351 Nitrobenzene 4.9 01/07/2023 1330628.0 39-1231 2-Nitrophenol 5.7 01/07/2023 1330718.0 36-1231 4-Nitrophenol 10 01/07/2023 1330631631-1451 N-Nitrosodimethylamine 5.9 01/07/2023 1330738.0 30-1301 N-Nitrosodi-n-propylamine 5.8 01/07/2023 1330738.0 39-1191 N-Nitrosodiphenylamine (Diphenylamine)6.2 01/07/2023 1330778.0 30-1231 Pentachlorophenol 9.8 01/07/2023 1330611634-1371 Phenanthrene 5.8 01/07/2023 1330728.0 40-1231 Phenol 4.7 01/07/2023 1330598.0 30-1301 Pyrene 6.7 01/07/2023 1330848.0 40-1261 1,2,4,5-Tetrachlorobenzene 4.2 01/07/2023 1330538.0 30-1301 2,3,4,6-Tetrachlorophenol 6.1 01/07/2023 1330768.0 30-1301 1,2,4-Trichlorobenzene 4.7 01/07/2023 1330598.0 20-901 2,4,5-Trichlorophenol 4.7 01/07/2023 1330598.0 30-1231 2,4,6-Trichlorophenol 5.3 01/07/2023 1330668.0 30-1251 Surrogate Q % Rec Acceptance Limit 2-Fluorobiphenyl 64 37-129 2-Fluorophenol 36 24-127 Nitrobenzene-d5 68 38-127 Phenol-d5 55 28-128 Terphenyl-d14 83 10-148 2,4,6-Tribromophenol 71 35-144 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 129 of 159 Semivolatile Organic Compounds by GC/MS - MS Batch:Prep Method: Prep Date: Sample ID:YA03041-005MS 64097 3520C 01/04/2023 1400Analytical Method:8270E Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Acenaphthene 11 01/07/2023 1531691630-122ND1 Acenaphthylene 12 01/07/2023 1531741630-130ND1 Acetophenone 11 01/07/2023 1531661630-130ND1 Anthracene 12 01/07/2023 1531771630-123ND1 Benzo(a)anthracene 12 01/07/2023 1531771640-125ND1 Benzo(a)pyrene 11 01/07/2023 1531721640-128ND1 Benzo(b)fluoranthene 13 01/07/2023 1531811630-130ND1 Benzo(g,h,i)perylene 13 01/07/2023 1531801630-130ND1 Benzo(k)fluoranthene 12 01/07/2023 1531771630-130ND1 Benzyl alcohol 3.8 01/07/2023 1531N241630-130ND1 4-Bromophenyl phenyl ether 12 01/07/2023 1531751630-124ND1 Butyl benzyl phthalate 14 01/07/2023 1531881654-1350.50 1 bis (2-Chloro-1-methylethyl) ether 11 01/07/2023 1531701630-130ND1 4-Chloro-3-methyl phenol 11 01/07/2023 1531691630-130ND1 4-Chloroaniline 3.6 01/07/2023 1531N231630-130ND1 bis(2-Chloroethoxy)methane 11 01/07/2023 1531681630-130ND1 bis(2-Chloroethyl)ether 11 01/07/2023 1531661630-130ND1 2-Chloronaphthalene 11 01/07/2023 1531671630-130ND1 2-Chlorophenol 11 01/07/2023 1531681630-130ND1 4-Chlorophenyl phenyl ether 12 01/07/2023 1531751630-121ND1 Chrysene 12 01/07/2023 1531771630-130ND1 Dibenzo(a,h)anthracene 13 01/07/2023 1531791630-130ND1 Dibenzofuran 11 01/07/2023 1531681630-118ND1 1,2-Dichlorobenzene 10 01/07/2023 1531621630-130ND1 1,3-Dichlorobenzene 9.0 01/07/2023 1531561630-130ND1 1,4-Dichlorobenzene 10 01/07/2023 1531591630-1300.98 1 3,3'-Dichlorobenzidine 5.7 01/07/2023 1531351610-126ND1 2,4-Dichlorophenol 10 01/07/2023 1531631630-121ND1 2,6-Dichlorophenol 11 01/07/2023 1531661630-130ND1 Diethylphthalate 13 01/07/2023 1531811640-125ND1 Dimethyl phthalate 12 01/07/2023 1531771640-127ND1 2,4-Dimethylphenol 5.5 01/07/2023 1531341620-125ND1 Di-n-butyl phthalate 15 01/07/2023 1531871640-1270.72 1 4,6-Dinitro-2-methylphenol 11 01/07/2023 1531711630-130ND1 2,4-Dinitrophenol 21 01/07/2023 1531643230-130ND1 2,4-Dinitrotoluene 12 01/07/2023 1531731630-130ND1 2,6-Dinitrotoluene 11 01/07/2023 1531701630-130ND1 Di-n-octylphthalate 13 01/07/2023 1531781630-130ND1 bis(2-Ethylhexyl)phthalate 15 01/07/2023 1531941630-130ND1 Fluoranthene 13 01/07/2023 1531831640-128ND1 Fluorene 12 01/07/2023 1531721630-124ND1 Hexachlorobenzene 12 01/07/2023 1531741630-125ND1 Hexachlorobutadiene 9.2 01/07/2023 1531581624-110ND1 Hexachlorocyclopentadiene 36 01/07/2023 1531458030-130ND1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 130 of 159 Semivolatile Organic Compounds by GC/MS - MS Batch:Prep Method: Prep Date: Sample ID:YA03041-005MS 64097 3520C 01/04/2023 1400Analytical Method:8270E Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Hexachloroethane 9.3 01/07/2023 1531581630-130ND1 Indeno(1,2,3-c,d)pyrene 12 01/07/2023 1531761630-130ND1 Isophorone 10 01/07/2023 1531641630-130ND1 2-Methylnaphthalene 11 01/07/2023 1531691640-132ND1 2-Methylphenol 8.8 01/07/2023 1531551630-130ND1 3+4-Methylphenol 11 01/07/2023 1531701630-130ND1 Naphthalene 11 01/07/2023 1531671630-130ND1 2-Nitroaniline 13 01/07/2023 1531821630-130ND1 3-Nitroaniline 7.8 01/07/2023 1531491630-130ND1 4-Nitroaniline 10 01/07/2023 1531641630-135ND1 Nitrobenzene 9.5 01/07/2023 1531591630-130ND1 2-Nitrophenol 11 01/07/2023 1531711630-130ND1 4-Nitrophenol 18 01/07/2023 1531573230-130ND1 N-Nitrosodimethylamine 11 01/07/2023 1531671630-130ND1 N-Nitrosodi-n-propylamine 11 01/07/2023 1531671630-130ND1 N-Nitrosodiphenylamine (Diphenylamine)11 01/07/2023 1531681630-123ND1 Pentachlorophenol 22 01/07/2023 1531693230-130ND1 Phenanthrene 12 01/07/2023 1531741640-123ND1 Phenol 9.9 01/07/2023 1531621630-130ND1 Pyrene 13 01/07/2023 1531841640-126ND1 1,2,4,5-Tetrachlorobenzene 8.8 01/07/2023 1531551630-130ND1 2,3,4,6-Tetrachlorophenol 12 01/07/2023 1531731630-130ND1 1,2,4-Trichlorobenzene 9.6 01/07/2023 1531601620-90ND1 2,4,5-Trichlorophenol 10 01/07/2023 1531631630-123ND1 2,4,6-Trichlorophenol 11 01/07/2023 1531721630-125ND1 Surrogate Q % Rec Acceptance Limit 2-Fluorobiphenyl 67 37-129 2-Fluorophenol 34 24-127 Nitrobenzene-d5 64 38-127 Phenol-d5 53 28-128 Terphenyl-d14 81 10-148 2,4,6-Tribromophenol 73 35-144 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 131 of 159 Semivolatile Organic Compounds by GC/MS - MSD Batch:Prep Method: Prep Date: Sample ID:YA03041-005MD 64097 3520C 01/04/2023 1400Analytical Method:8270E Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Acenaphthene 12 01/07/2023 1555731630-1226.5 40ND1 Acenaphthylene 13 01/07/2023 1555801630-1307.7 40ND1 Acetophenone 11 01/07/2023 1555711630-1307.8 40ND1 Anthracene 13 01/07/2023 1555841630-1239.3 40ND1 Benzo(a)anthracene 13 01/07/2023 1555841640-1258.2 40ND1 Benzo(a)pyrene 13 01/07/2023 1555821640-12813 40ND1 Benzo(b)fluoranthene 14 01/07/2023 1555891630-1309.5 40ND1 Benzo(g,h,i)perylene 13 01/07/2023 1555841630-1304.1 40ND1 Benzo(k)fluoranthene 13 01/07/2023 1555841630-1308.7 40ND1 Benzyl alcohol 4.1 01/07/2023 1555N251630-1306.3 40ND1 4-Bromophenyl phenyl ether 13 01/07/2023 1555791630-1244.8 40ND1 Butyl benzyl phthalate 18 01/07/2023 15551151654-13527 400.50 1 bis (2-Chloro-1-methylethyl) ether 12 01/07/2023 1555771630-1309.4 40ND1 4-Chloro-3-methyl phenol 12 01/07/2023 1555751630-1307.9 40ND1 4-Chloroaniline 3.4 01/07/2023 1555N211630-1307.2 40ND1 bis(2-Chloroethoxy)methane 12 01/07/2023 1555731630-1306.8 40ND1 bis(2-Chloroethyl)ether 12 01/07/2023 1555721630-1308.6 40ND1 2-Chloronaphthalene 12 01/07/2023 1555741630-1308.7 40ND1 2-Chlorophenol 11 01/07/2023 1555711630-1304.0 40ND1 4-Chlorophenyl phenyl ether 13 01/07/2023 1555821630-1218.7 40ND1 Chrysene 13 01/07/2023 1555841630-1309.4 40ND1 Dibenzo(a,h)anthracene 13 01/07/2023 1555811630-1302.7 40ND1 Dibenzofuran 12 01/07/2023 1555741630-1188.6 40ND1 1,2-Dichlorobenzene 10 01/07/2023 1555661630-1305.1 40ND1 1,3-Dichlorobenzene 9.7 01/07/2023 1555601630-1306.9 40ND1 1,4-Dichlorobenzene 11 01/07/2023 1555631630-1305.5 400.98 1 3,3'-Dichlorobenzidine ND 01/07/2023 1555N,+0.0016 10-126200 40ND1 2,4-Dichlorophenol 11 01/07/2023 1555701630-12110 40ND1 2,6-Dichlorophenol 11 01/07/2023 1555721630-1307.8 40ND1 Diethylphthalate 14 01/07/2023 1555861640-1255.6 40ND1 Dimethyl phthalate 13 01/07/2023 1555831640-1278.1 40ND1 2,4-Dimethylphenol 11 01/07/2023 1555+6916 20-12568 40ND1 Di-n-butyl phthalate 16 01/07/2023 1555961640-1279.4 400.72 1 4,6-Dinitro-2-methylphenol 12 01/07/2023 1555751630-1305.5 40ND1 2,4-Dinitrophenol 22 01/07/2023 1555693230-1307.1 40ND1 2,4-Dinitrotoluene 12 01/07/2023 1555781630-1306.5 40ND1 2,6-Dinitrotoluene 13 01/07/2023 1555781630-13011 40ND1 Di-n-octylphthalate 14 01/07/2023 1555871630-13011 40ND1 bis(2-Ethylhexyl)phthalate 23 01/07/2023 1555N,+14216 30-13041 40ND1 Fluoranthene 14 01/07/2023 1555881640-1285.1 40ND1 Fluorene 13 01/07/2023 1555801630-12410 40ND1 Hexachlorobenzene 13 01/07/2023 1555811630-1259.8 40ND1 Hexachlorobutadiene 10 01/07/2023 1555641624-11010 40ND1 Hexachlorocyclopentadiene 42 01/07/2023 1555528030-13015 40ND1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 132 of 159 Semivolatile Organic Compounds by GC/MS - MSD Batch:Prep Method: Prep Date: Sample ID:YA03041-005MD 64097 3520C 01/04/2023 1400Analytical Method:8270E Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Hexachloroethane 9.8 01/07/2023 1555611630-1305.8 40ND1 Indeno(1,2,3-c,d)pyrene 13 01/07/2023 1555821630-1306.8 40ND1 Isophorone 11 01/07/2023 1555681630-1306.2 40ND1 2-Methylnaphthalene 12 01/07/2023 1555741640-1327.8 40ND1 2-Methylphenol 10 01/07/2023 1555651630-13017 40ND1 3+4-Methylphenol 13 01/07/2023 1555791630-13012 40ND1 Naphthalene 11 01/07/2023 1555691630-1304.2 40ND1 2-Nitroaniline 14 01/07/2023 1555861630-1304.2 40ND1 3-Nitroaniline 9.1 01/07/2023 1555571630-13016 40ND1 4-Nitroaniline 12 01/07/2023 1555761630-13517 40ND1 Nitrobenzene 10 01/07/2023 1555621630-1305.1 40ND1 2-Nitrophenol 12 01/07/2023 1555771630-1308.2 40ND1 4-Nitrophenol 20 01/07/2023 1555623230-1309.5 40ND1 N-Nitrosodimethylamine 10 01/07/2023 1555651630-1301.9 40ND1 N-Nitrosodi-n-propylamine 12 01/07/2023 1555731630-1308.4 40ND1 N-Nitrosodiphenylamine (Diphenylamine)9.6 01/07/2023 1555601630-12313 40ND1 Pentachlorophenol 25 01/07/2023 1555783230-13012 40ND1 Phenanthrene 13 01/07/2023 1555811640-1239.2 40ND1 Phenol 9.1 01/07/2023 1555571630-1308.3 40ND1 Pyrene 14 01/07/2023 1555891640-1266.3 40ND1 1,2,4,5-Tetrachlorobenzene 10 01/07/2023 1555631630-13012 40ND1 2,3,4,6-Tetrachlorophenol 14 01/07/2023 1555861630-13016 40ND1 1,2,4-Trichlorobenzene 10 01/07/2023 1555651620-907.9 40ND1 2,4,5-Trichlorophenol 11 01/07/2023 1555661630-1234.9 40ND1 2,4,6-Trichlorophenol 12 01/07/2023 1555751630-1254.9 40ND1 Surrogate Q % Rec Acceptance Limit 2-Fluorobiphenyl 71 37-129 2-Fluorophenol 35 24-127 Nitrobenzene-d5 69 38-127 Phenol-d5 50 28-128 Terphenyl-d14 86 10-148 2,4,6-Tribromophenol 78 35-144 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 133 of 159 Organochlorine Pesticides by GC - MB Batch:Prep Method: Prep Date: Sample ID:YQ64085-001 64085 3520C 01/04/2023 1203Analytical Method:8081B Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Aldrin ND 01/05/2023 15490.040 0.020 ug/L1 gamma-BHC (Lindane)ND 01/05/2023 15490.040 0.017 ug/L1 alpha-BHC ND 01/05/2023 15490.040 0.015 ug/L1 beta-BHC ND 01/05/2023 15490.040 0.015 ug/L1 delta-BHC ND 01/05/2023 15490.040 0.015 ug/L1 Chlordane ND 01/05/2023 15490.40 0.15 ug/L1 4,4'-DDD ND 01/05/2023 15490.040 0.015 ug/L1 4,4'-DDE ND 01/05/2023 15490.040 0.020 ug/L1 4,4'-DDT ND 01/05/2023 15490.040 0.020 ug/L1 Dieldrin ND 01/05/2023 15490.040 0.015 ug/L1 Endosulfan I ND 01/05/2023 15490.040 0.015 ug/L1 Endosulfan II ND 01/05/2023 15490.040 0.015 ug/L1 Endosulfan sulfate ND 01/05/2023 15490.040 0.015 ug/L1 Endrin ND 01/05/2023 15490.040 0.015 ug/L1 Endrin aldehyde ND 01/05/2023 15490.040 0.015 ug/L1 Heptachlor ND 01/05/2023 15490.040 0.021 ug/L1 Heptachlor epoxide ND 01/05/2023 15490.040 0.016 ug/L1 Methoxychlor ND 01/05/2023 15490.16 0.021 ug/L1 Toxaphene ND 01/05/2023 15490.40 0.30 ug/L1 Surrogate Q % Rec Acceptance Limit Decachlorobiphenyl 57 20-122 Tetrachloro-m-xylene 84 46-119 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 134 of 159 Organochlorine Pesticides by GC - LCS Batch:Prep Method: Prep Date: Sample ID:YQ64085-002 64085 3520C 01/04/2023 1203Analytical Method:8081B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Aldrin 0.89 01/05/2023 16051110.80 70-1301 gamma-BHC (Lindane)0.91 01/05/2023 16051140.80 70-1301 alpha-BHC 0.87 01/05/2023 16051090.80 70-1301 beta-BHC 0.82 01/05/2023 16051030.80 70-1301 delta-BHC 0.89 01/05/2023 16051120.80 70-1301 4,4'-DDD 0.91 01/05/2023 16051140.80 70-1301 4,4'-DDE 0.88 01/05/2023 16051100.80 70-1301 4,4'-DDT 0.98 01/05/2023 16051230.80 70-1301 Dieldrin 0.94 01/05/2023 16051170.80 70-1301 Endosulfan I 0.87 01/05/2023 16051090.80 70-1301 Endosulfan II 0.87 01/05/2023 16051090.80 70-1301 Endosulfan sulfate 0.89 01/05/2023 16051120.80 70-1301 Endrin 0.84 01/05/2023 16051050.80 70-1301 Endrin aldehyde 0.91 01/05/2023 16051130.80 70-1301 Heptachlor 0.81 01/05/2023 16051010.80 70-1301 Heptachlor epoxide 0.86 01/05/2023 16051070.80 70-1301 Methoxychlor 0.83 01/05/2023 16051040.80 70-1301 Surrogate Q % Rec Acceptance Limit Decachlorobiphenyl 66 20-122 Tetrachloro-m-xylene 88 46-119 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 135 of 159 Organochlorine Pesticides by GC - MB Batch:Prep Method: Prep Date: Sample ID:YQ64085-001 64085 3520C 01/04/2023 1203Analytical Method:8081B Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Aldrin ND 01/05/2023 15490.040 0.020 ug/L1 beta-BHC ND 01/05/2023 15490.040 0.015 ug/L1 Surrogate Q % Rec Acceptance Limit Decachlorobiphenyl 57 20-122 Tetrachloro-m-xylene 84 46-119 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 136 of 159 Organochlorine Pesticides by GC - LCS Batch:Prep Method: Prep Date: Sample ID:YQ64085-002 64085 3520C 01/04/2023 1203Analytical Method:8081B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Aldrin 0.89 01/05/2023 16051110.80 70-1301 beta-BHC 0.82 01/05/2023 16051030.80 70-1301 Surrogate Q % Rec Acceptance Limit Decachlorobiphenyl 66 20-122 Tetrachloro-m-xylene 88 46-119 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 137 of 159 Organochlorine Pesticides by GC - MS Batch:Prep Method: Prep Date: Sample ID:YA03041-009MS 64085 3520C 01/04/2023 1203Analytical Method:8081B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Aldrin 0.45 01/05/2023 1655N281.6 70-130ND10 beta-BHC 1.4 01/05/2023 1655701.6 70-1300.28 10 Surrogate Q % Rec Acceptance Limit Decachlorobiphenyl 24 20-122 Tetrachloro-m-xylene 74 46-119 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 138 of 159 Organochlorine Pesticides by GC - MSD Batch:Prep Method: Prep Date: Sample ID:YA03041-009MD 64085 3520C 01/04/2023 1203Analytical Method:8081B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Aldrin 0.43 01/05/2023 1711N271.6 70-1305.3 30ND10 beta-BHC 1.6 01/05/2023 1711801.6 70-13011 300.28 10 Surrogate Q % Rec Acceptance Limit Decachlorobiphenyl N 17 20-122 Tetrachloro-m-xylene 72 46-119 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 139 of 159 PCBs by GC - MB Batch:Prep Method: Prep Date: Sample ID:YQ64086-001 64086 3520C 01/04/2023 1203Analytical Method:8082A Matrix:Aqueous Cleanup:3665A Parameter Result Q LOQ DL Units Analysis DateDil Aroclor 1016 ND 01/13/2023 13590.40 0.15 ug/L1 Aroclor 1221 ND 01/13/2023 13590.40 0.25 ug/L1 Aroclor 1232 ND 01/13/2023 13590.40 0.15 ug/L1 Aroclor 1242 ND 01/13/2023 13590.40 0.15 ug/L1 Aroclor 1248 ND 01/13/2023 13590.40 0.15 ug/L1 Aroclor 1254 ND 01/13/2023 13590.40 0.15 ug/L1 Aroclor 1260 ND 01/13/2023 13590.40 0.15 ug/L1 Surrogate Q % Rec Acceptance Limit Decachlorobiphenyl 52 10-133 Tetrachloro-m-xylene 79 31-122 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 140 of 159 PCBs by GC - LCS Batch:Prep Method: Prep Date: Sample ID:YQ64086-002 64086 3520C 01/04/2023 1203Analytical Method:8082A Matrix:Aqueous Cleanup:3665A Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Aroclor 1016 3.5 01/13/2023 1412884.0 70-1301 Aroclor 1260 4.0 01/13/2023 1412994.0 70-1301 Surrogate Q % Rec Acceptance Limit Decachlorobiphenyl 72 10-133 Tetrachloro-m-xylene 83 31-122 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 141 of 159 PCBs by GC - MS Batch:Prep Method: Prep Date: Sample ID:YA03041-006MS 64086 3520C 01/04/2023 1203Analytical Method:8082A Matrix:Aqueous Cleanup:3665A Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Aroclor 1016 6.9 01/13/2023 1452878.0 70-130ND1 Aroclor 1260 7.2 01/13/2023 1452908.0 70-130ND1 Surrogate Q % Rec Acceptance Limit Decachlorobiphenyl 61 10-133 Tetrachloro-m-xylene 82 31-122 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 142 of 159 PCBs by GC - MSD Batch:Prep Method: Prep Date: Sample ID:YA03041-006MD 64086 3520C 01/04/2023 1203Analytical Method:8082A Matrix:Aqueous Cleanup:3665A Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Aroclor 1016 7.0 01/13/2023 1505878.0 70-1301.0 20ND1 Aroclor 1260 7.4 01/13/2023 1505938.0 70-1302.5 20ND1 Surrogate Q % Rec Acceptance Limit Decachlorobiphenyl 58 10-133 Tetrachloro-m-xylene 84 31-122 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 143 of 159 Herbicides by GC - MB Batch:Prep Method: Prep Date: Sample ID:YQ64110-001 64110 8151A 01/04/2023 1526Analytical Method:8151A Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil 2,4,5-T ND 01/16/2023 21130.50 0.13 ug/L1 2,4-D ND 01/16/2023 21132.0 0.50 ug/L1 Dinoseb 0.71 01/16/2023 2113J1.0 0.50 ug/L1 2,4,5-TP (Silvex)ND 01/16/2023 21130.50 0.13 ug/L1 Surrogate Q % Rec Acceptance Limit DCAA 72 50-112 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 144 of 159 Herbicides by GC - LCS Batch:Prep Method: Prep Date: Sample ID:YQ64110-002 64110 8151A 01/04/2023 1526Analytical Method:8151A Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) 2,4,5-T 4.1 01/16/2023 2136815.0 70-1301 2,4-D 4.0 01/16/2023 2136805.0 70-1301 Dinoseb 3.7 01/16/2023 2136755.0 31-1281 2,4,5-TP (Silvex)3.9 01/16/2023 2136775.0 70-1301 Surrogate Q % Rec Acceptance Limit DCAA 64 50-112 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 145 of 159 Herbicides by GC - MS Batch:Prep Method: Prep Date: Sample ID:YA03041-005MS 64110 8151A 01/04/2023 1526Analytical Method:8151A Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) 2,4,5-T 8.7 01/16/2023 2222871070-130ND1 2,4-D 9.1 01/16/2023 2222911070-130ND1 Dinoseb 7.1 01/16/2023 2222P641031-1280.70 1 2,4,5-TP (Silvex)8.3 01/16/2023 2222831070-130ND1 Surrogate Q % Rec Acceptance Limit DCAA 67 50-112 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 146 of 159 Herbicides by GC - MSD Batch:Prep Method: Prep Date: Sample ID:YA03041-005MD 64110 8151A 01/04/2023 1526Analytical Method:8151A Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) 2,4,5-T 8.0 01/16/2023 2245801070-1307.9 40ND1 2,4-D 8.5 01/16/2023 2245851070-1307.0 40ND1 Dinoseb 6.5 01/16/2023 2245P581031-1288.5 400.70 1 2,4,5-TP (Silvex)7.7 01/16/2023 2245771070-1307.0 40ND1 Surrogate Q % Rec Acceptance Limit DCAA 63 50-112 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 147 of 159 ICP-MS Metals - MB Batch:Prep Method: Prep Date: Sample ID:YQ64070-001 64070 3005A 01/04/2023 1535Analytical Method:6020B Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Antimony ND 01/05/2023 13172.0 0.50 ug/L1 Arsenic ND 01/05/2023 13172.0 1.3 ug/L1 Barium ND 01/05/2023 13175.0 1.3 ug/L1 Beryllium ND 01/05/2023 13170.40 0.15 ug/L1 Cadmium ND 01/05/2023 13170.50 0.13 ug/L1 Chromium ND 01/05/2023 13175.0 1.3 ug/L1 Cobalt ND 01/05/2023 13175.0 1.3 ug/L1 Copper ND 01/05/2023 13175.0 1.3 ug/L1 Lead ND 01/05/2023 13171.0 0.25 ug/L1 Nickel ND 01/05/2023 13175.0 1.3 ug/L1 Selenium ND 01/05/2023 13175.0 1.3 ug/L1 Silver ND 01/05/2023 13171.0 0.25 ug/L1 Thallium ND 01/06/2023 12090.50 0.15 ug/L1 Vanadium ND 01/05/2023 13175.0 2.5 ug/L1 Zinc ND 01/05/2023 1317102.5 ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 148 of 159 ICP-MS Metals - LCS Batch:Prep Method: Prep Date: Sample ID:YQ64070-002 64070 3005A 01/04/2023 1535Analytical Method:6020B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Antimony 100 01/05/2023 132710010080-1201 Arsenic 90 01/05/2023 13279010080-1201 Barium 97 01/05/2023 13279710080-1201 Beryllium 96 01/05/2023 13279610080-1201 Cadmium 100 01/05/2023 132710310080-1201 Chromium 100 01/05/2023 132710110080-1201 Cobalt 100 01/05/2023 132710310080-1201 Copper 100 01/05/2023 132710310080-1201 Lead 110 01/05/2023 132711010080-1201 Nickel 100 01/05/2023 132710010080-1201 Selenium 91 01/05/2023 13279110080-1201 Silver 94 01/05/2023 13279410080-1201 Thallium 110 01/06/2023 121911210080-1201 Vanadium 100 01/05/2023 132710210080-1201 Zinc 98 01/05/2023 13279810080-1201 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 149 of 159 ICP-MS Metals - MS Batch:Prep Method: Prep Date: Sample ID:YA03041-012MS 64070 3005A 01/04/2023 1535Analytical Method:6020B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Antimony 100 01/05/2023 160410310075-125ND1 Arsenic 95 01/05/2023 16049510075-125ND1 Barium 160 01/05/2023 160410010075-125611 Beryllium 99 01/05/2023 16049910075-125ND1 Cadmium 110 01/05/2023 160410610075-1250.34 1 Chromium 98 01/05/2023 16049810075-125ND1 Cobalt 100 01/05/2023 160410310075-125ND1 Copper 100 01/05/2023 160410210075-125ND1 Lead 110 01/05/2023 160410610075-1250.40 1 Nickel 100 01/05/2023 160410010075-125ND1 Selenium 96 01/05/2023 16049610075-125ND1 Silver 91 01/05/2023 16049110075-125ND1 Thallium 110 01/05/2023 160410510075-125ND1 Vanadium 98 01/05/2023 16049810075-125ND1 Zinc 110 01/05/2023 160410310075-1253.0 1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 150 of 159 ICP-MS Metals - MSD Batch:Prep Method: Prep Date: Sample ID:YA03041-012MD 64070 3005A 01/04/2023 1535Analytical Method:6020B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Antimony 100 01/05/2023 161510310075-1250.021 20ND1 Arsenic 95 01/05/2023 16159510075-1250.14 20ND1 Barium 160 01/05/2023 16159810075-1251.1 20611 Beryllium 99 01/05/2023 16159910075-1250.60 20ND1 Cadmium 110 01/05/2023 161510610075-1250.26 200.34 1 Chromium 99 01/05/2023 16159910075-1250.91 20ND1 Cobalt 100 01/05/2023 161510310075-1250.42 20ND1 Copper 100 01/05/2023 161510310075-1251.6 20ND1 Lead 110 01/05/2023 161510610075-1250.58 200.40 1 Nickel 100 01/05/2023 161510010075-1250.44 20ND1 Selenium 97 01/05/2023 16159710075-1251.5 20ND1 Silver 92 01/05/2023 16159210075-1250.46 20ND1 Thallium 110 01/05/2023 161510510075-1250.27 20ND1 Vanadium 100 01/05/2023 161510110075-1252.7 20ND1 Zinc 110 01/05/2023 161510310075-1250.35 203.0 1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 151 of 159 ICP-MS Metals - MB Batch:Prep Method: Prep Date: Sample ID:YQ64070-001 64070 3005A 01/04/2023 1535Analytical Method:6020B Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Antimony ND 01/05/2023 13172.0 0.50 ug/L1 Arsenic ND 01/05/2023 13172.0 1.3 ug/L1 Barium ND 01/05/2023 13175.0 1.3 ug/L1 Beryllium ND 01/05/2023 13170.40 0.15 ug/L1 Cadmium ND 01/05/2023 13170.50 0.13 ug/L1 Chromium ND 01/05/2023 13175.0 1.3 ug/L1 Cobalt ND 01/05/2023 13175.0 1.3 ug/L1 Copper ND 01/05/2023 13175.0 1.3 ug/L1 Lead ND 01/05/2023 13171.0 0.25 ug/L1 Nickel ND 01/05/2023 13175.0 1.3 ug/L1 Selenium ND 01/05/2023 13175.0 1.3 ug/L1 Silver ND 01/05/2023 13171.0 0.25 ug/L1 Thallium ND 01/06/2023 12090.50 0.15 ug/L1 Tin ND 01/05/2023 1317205.0 ug/L1 Vanadium ND 01/05/2023 13175.0 2.5 ug/L1 Zinc ND 01/05/2023 1317102.5 ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 152 of 159 ICP-MS Metals - LCS Batch:Prep Method: Prep Date: Sample ID:YQ64070-002 64070 3005A 01/04/2023 1535Analytical Method:6020B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Antimony 100 01/05/2023 132710010080-1201 Arsenic 90 01/05/2023 13279010080-1201 Barium 97 01/05/2023 13279710080-1201 Beryllium 96 01/05/2023 13279610080-1201 Cadmium 100 01/05/2023 132710310080-1201 Chromium 100 01/05/2023 132710110080-1201 Cobalt 100 01/05/2023 132710310080-1201 Copper 100 01/05/2023 132710310080-1201 Lead 110 01/05/2023 132711010080-1201 Nickel 100 01/05/2023 132710010080-1201 Selenium 91 01/05/2023 13279110080-1201 Silver 94 01/05/2023 13279410080-1201 Thallium 110 01/06/2023 121911210080-1201 Tin 99 01/05/2023 13279910080-1201 Vanadium 100 01/05/2023 132710210080-1201 Zinc 98 01/05/2023 13279810080-1201 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 153 of 159 ICP-MS Metals - MB Batch:Prep Method: Prep Date: Sample ID:YQ65660-001 65660 3005A 01/24/2023 1039Analytical Method:6020B Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Antimony ND 01/25/2023 12082.0 0.50 ug/L1 Arsenic ND 01/25/2023 12082.0 1.3 ug/L1 Barium ND 01/25/2023 12085.0 1.3 ug/L1 Beryllium ND 01/25/2023 15310.40 0.15 ug/L1 Cadmium ND 01/25/2023 12080.50 0.13 ug/L1 Chromium ND 01/25/2023 12085.0 1.3 ug/L1 Cobalt ND 01/25/2023 12085.0 1.3 ug/L1 Copper ND 01/25/2023 12085.0 1.3 ug/L1 Lead ND 01/25/2023 12081.0 0.25 ug/L1 Nickel ND 01/25/2023 12085.0 1.3 ug/L1 Selenium 2.1 01/25/2023 1208J5.0 1.3 ug/L1 Silver ND 01/25/2023 12081.0 0.25 ug/L1 Thallium ND 01/25/2023 12080.50 0.15 ug/L1 Tin ND 01/25/2023 1208205.0 ug/L1 Vanadium ND 01/25/2023 12085.0 2.5 ug/L1 Zinc ND 01/25/2023 1208102.5 ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 154 of 159 ICP-MS Metals - LCS Batch:Prep Method: Prep Date: Sample ID:YQ65660-002 65660 3005A 01/24/2023 1039Analytical Method:6020B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Antimony 98 01/25/2023 12149810080-1201 Arsenic 100 01/25/2023 121410110080-1201 Barium 100 01/25/2023 121410010080-1201 Beryllium 98 01/25/2023 15429810080-1201 Cadmium 99 01/25/2023 12149910080-1201 Chromium 100 01/25/2023 121410210080-1201 Cobalt 100 01/25/2023 121410310080-1201 Copper 100 01/25/2023 121410310080-1201 Lead 100 01/25/2023 121410010080-1201 Nickel 100 01/25/2023 121410210080-1201 Selenium 99 01/25/2023 12149910080-1201 Silver 92 01/25/2023 12149210080-1201 Thallium 98 01/25/2023 12149810080-1201 Tin 99 01/25/2023 12149910080-1201 Vanadium 99 01/25/2023 12149910080-1201 Zinc 100 01/25/2023 121410210080-1201 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 155 of 159 Chain of Custody and Miscellaneous Documents 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 156 of 159 PACE ANALYTICAL SERVICES, LLC 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 157 of 159 PACE ANALYTICAL SERVICES, LLC 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 158 of 159 The electronic signature above is the equivalent of a handwritten signature. This report shall not be reproduced,except in its entirety,without the written approval of Pace Analytical Services,LLC. Pace Analytical Services,LLC (formerly Shealy Environmental Services,Inc.) 106 Vantage Point Drive West Columbia,SC 29172 Tel:803-791-9700 Fax:803-791-9111 www.pacelabs.com Report of Analysis Buxton Environmental PO Box 11550 Charlotte,NC 28220 Attention:Ross Klingman Project Name:Gaston Co Unit II MSW Landfill-Hardin Site Project Number:3606 Lot Number:XL31002 Date Completed:01/12/2023 Revision Date:09/20/2023 09/25/2023 5:52 PM Approved and released by: Project Manager II:Cathy S.Dover Page 1 of 104 PACE ANALYTICAL SERVICES,LLC SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639 Pace Analytical Services,LLC (formerly Shealy Environmetal Services,Inc.) 106 Vantage Point Drive West Columbia,SC 29172 (803)791-9700 Fax (803)791-9111 www.pacelabs.com Case Narrative Buxton Environmental Lot Number:XL31002 Report Revision:Per client,this report has been revised to update the element list for samples MW-12 (XL31002-012),MW-13 (XL31002-013)and MW-14 (XL31002-014).They were inadvertently reported as same list as the metals on the other COC/sample received and now are reported with only RCRA metals (minus Hg).This report supersedes and replaces any prior reports issued under this lot number. This Report of Analysis contains the analytical result(s)for the sample(s)listed on the Sample Summary following this Case Narrative.The sample receiving date is documented in the header information associated with each sample. All results listed in this report relate only to the samples that are contained within this report.Where sampling is conducted by the client,results relate to the accuracy of the information provided,and as the samples are received. Sample receipt,sample analysis,and data review have been performed in accordance with the most current approved The NELAC Institute (TNI)standards,the Pace Analytical Services,LLC ("Pace") Laboratory Quality Manual,standard operating procedures (SOPs),and Pace policies.Any exceptions to the TNI standards,the Laboratory Quality Manual,SOPs or policies are qualified on the results page or discussed below. Pace is a TNI accredited laboratory;however,the following analyses are currently not listed on our TNI scope of accreditation:Drinking Water:VOC (excluding BTEX,MTBE,Naphthalene,&1,2- dichloroethane)EPA 524.2,E.coli and Total coliforms SM 9223 B-2004,Solid Chemical Material:TOC Walkley-Black,Biological Tissue:All,Non-Potable Water:SGT-HEM EPA 1664B,Silica EPA 200.7, Boron,Calcium,Silicon,Strontium EPA 200.8,Bicarbonate,Carbonate,and Hydroxide Alkalinity SM 2320 B-2011,SM 9221 C E-2006 &SM 9222D-2006,Strontium SW-846 6010D,VOC SM 6200 B-2011,Fecal Coliform Colilert-18. VOA 8260D Insufficient sample volume was provided to perform matrix spike/matrix spike duplicate (MS/MSD)for analytical batch 64266.An LCS/LCSD was run in lieu of an MS/MSD.Associated samples: XL31002-001 (MW-1)(Run 1)(Analysis Batch 64266) XL31002-002 (MW-24)(Run 1)(Analysis Batch 64266) XL31002-003 (MW-25)(Run 1)(Analysis Batch 64266) XL31002-004 (MW-26)(Run 1)(Analysis Batch 64266) XL31002-005 (MW-27)(Run 1)(Analysis Batch 64266) XL31002-006 (MW-31)(Run 1)(Analysis Batch 64266) XL31002-007 (US-1)(Run 1)(Analysis Batch 64266) XL31002-008 (DS-1)(Run 1)(Analysis Batch 64266) XL31002-009 (Leachate-Unit 2 ph1)(Run 1)(Analysis Batch 64266) XL31002-010 (Leachate-Unit 2 ph2)(Run 1)(Analysis Batch 64266) XL31002-011 (Equipment Blank)(Run 1)(Analysis Batch 64266) XL31002-012 (MW-12)(Run 1)(Analysis Batch 64266) XL31002-013 (MW-13)(Run 1)(Analysis Batch 64266) XL31002-014 (MW-14)(Run 1)(Analysis Batch 64266) Page 2 of 104 PACE ANALYTICAL SERVICES,LLC SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639 Pace Analytical Services,LLC (formerly Shealy Environmetal Services,Inc.) 106 Vantage Point Drive West Columbia,SC 29172 (803)791-9700 Fax (803)791-9111 www.pacelabs.com The following samples was received with an air bubble in the sample vials:XL31002-009 and XL31002- 010. XL31002-009 (Leachate-Unit 2 ph1)(Run 1)(Analysis Batch 64266) XL31002-010 (Leachate-Unit 2 ph2)(Run 1)(Analysis Batch 64266) XL31002-009 (Leachate-Unit 2 ph1)(Run 1)(Analysis Batch 64266) XL31002-010 (Leachate-Unit 2 ph2)(Run 1)(Analysis Batch 64266) The initial calibration verification (ICV)associated with samples XL31002-001,XL31002-002,XL31002- 003,XL31002-004,XL31002-005,XL31002-006,XL31002-007,XL31002-008,XL31002-009,XL31002- 010,XL31002-011,XL31002-012,XL31002-013,and XL31002-014 exceeded control criteria for analyte: 2-hexanone (133%).The data has been reported. The initial calibration verification (ICV)associated with samples XL31002-001,XL31002-003,XL31002- 004,XL31002-005,XL31002-006,XL31002-007,XL31002-008,XL31002-011,XL31002-012,XL31002- 013,XL31002-014 exceeded control criteria for analytes:Acetone (123%).The data has been reported. XL31002-001 (MW-1)(Run 1)(Analysis Batch 64266) XL31002-003 (MW-25)(Run 1)(Analysis Batch 64266) XL31002-004 (MW-26)(Run 1)(Analysis Batch 64266) XL31002-005 (MW-27)(Run 1)(Analysis Batch 64266) XL31002-006 (MW-31)(Run 1)(Analysis Batch 64266) XL31002-007 (US-1)(Run 1)(Analysis Batch 64266) XL31002-008 (DS-1)(Run 1)(Analysis Batch 64266) XL31002-011 (Equipment Blank)(Run 1)(Analysis Batch 64266) XL31002-012 (MW-12)(Run 1)(Analysis Batch 64266) XL31002-013 (MW-13)(Run 1)(Analysis Batch 64266) XL31002-014 (MW-14)(Run 1)(Analysis Batch 64266) The laboratory control sample (LCS)and laboratory control sample duplicate (LCSD)for analytical batch 64266 exceeded acceptance criteria for the following analytes:Acetone,2-butanone,1,4-dioxane and 2- hexanone.These analytes were biased high and were not detected in the associated samples,or below the LOQ:XL31002-001,XL31002-002,XL31002-003,XL31002-004,XL31002-005,XL31002-006, XL31002-007,XL31002-008,XL31002-009,XL31002-010,XL31002-011,XL31002-012,XL31002-013, and XL31002-014.The RPD for trans-1,4-Dichloro-2-butene was >20%. XL31002-001 (MW-1)(Run 1)(Analysis Batch 64266) XL31002-002 (MW-24)(Run 1)(Analysis Batch 64266) XL31002-003 (MW-25)(Run 1)(Analysis Batch 64266) XL31002-004 (MW-26)(Run 1)(Analysis Batch 64266) XL31002-005 (MW-27)(Run 1)(Analysis Batch 64266) XL31002-006 (MW-31)(Run 1)(Analysis Batch 64266) XL31002-007 (US-1)(Run 1)(Analysis Batch 64266) XL31002-008 (DS-1)(Run 1)(Analysis Batch 64266) XL31002-011 (Equipment Blank)(Run 1)(Analysis Batch 64266) XL31002-012 (MW-12)(Run 1)(Analysis Batch 64266) XL31002-013 (MW-13)(Run 1)(Analysis Batch 64266) XL31002-014 (MW-14)(Run 1)(Analysis Batch 64266) Page 3 of 104 PACE ANALYTICAL SERVICES,LLC SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639 Pace Analytical Services,LLC (formerly Shealy Environmetal Services,Inc.) 106 Vantage Point Drive West Columbia,SC 29172 (803)791-9700 Fax (803)791-9111 www.pacelabs.com Insufficient sample volume was provided to perform matrix spike/matrix spike duplicate (MS/MSD)for analytical batch 64265.An LCS/LCSD was run in lieu of an MS/MSD.Associated sample:XL31002-015 (FD-1)(Run 1)(Analysis Batch 64265) Sample XL31002-009 (Leachate-Unit 2 ph1)had a pH of 5 when pH was taken at analysis time. The LCS/LCSD RPD for 1,4-dioxane in batch 64265 was >20%,but spike recovery was in control limits. The MS/MSD for batch 64266 and parent sample XL31002-010 (Leachate-Unit 2 ph2),recovered outside the lower control limit for Acetone.The associated LCS passed acceptance criteria. The continuing calibration verification (CCV)associated with analytical batch 64265 recovered outside acceptance criteria,low biased,for Vinyl acetate (-25%).An LOQ standard was analyzed,and the target analyte was detected.Since the associated sample,XL31002-015 was non-detect,no corrective action was taken. XL31002-015 (FD-1)(Run 1)(Analysis Batch 64265)Full list VOCs (with total and separate xylenes,total ICP Metals 6020B The following samples were diluted due to the nature of the sample matrix:XL31002-009 and XL31002- 010.The LOQ has been elevated to reflect the dilution. XL31002-009 (Leachate-Unit 2 ph1)(Run 1)(Analysis Batch 64284)(Prep Batch 63980)ICP-MS Metals XL31002-010 (Leachate-Unit 2 ph2)(Run 1)(Analysis Batch 64284)(Prep Batch 63980)ICP-MS Metals Nitrate 353.2 The following samples:XL31002-009 and XL31002-010 (Leachate-Unit 2 ph2)were associated with analytical batch 63954 that had a LCS that recovered outside XL31002-009 (Leachate-Unit 2 ph1)of acceptable range,samples were scheduled for a reanalysis.The reanalysis of the samples was performed outside of the analytical holding time,but this analysis confirmed the original results within 20% RPD.The original analysis has been reported. Orthophosphate 365.1 According to the method,orthophosphate samples must be filtered within 15 minutes of collection.No information was provided stating that the samples in this batch were filtered to meet this requirement. Therefore,the samples were filtered during sample preparation prior to analysis.Data has been reported.Associated samples: XL31002-009 (Leachate-Unit 2 ph1)and XL31002-010 (Leachate-Unit 2 ph2) XL31002-009 (Leachate-Unit 2 ph1)(Run 1)(Analysis Batch 63953)Orthophosphate XL31002-010 (Leachate-Unit 2 ph2)(Run 1)(Analysis Batch 63953)Orthophosphate The limit of quantitation (LOQ)check standard for orthophosphate analytical batch 63953 did not recover within recovery criteria.The affected samples XL31002-009 and XL31009-010 should be considered biased high.The samples were reanalyzed and results confirmed.The original in holding time analysis has been reported. XL31002-009 (Leachate-Unit 2 ph1)(Run 1)(Analysis Batch 63953)Orthophosphate XL31002-010 (Leachate-Unit 2 ph2)(Run 1)(Analysis Batch 63953)Orthophosphate Page 4 of 104 PACE ANALYTICAL SERVICES,LLC SC DHEC No:32010001 NELAC No:E87653 NC DENR No:329 NC Field Parameters No:5639 Pace Analytical Services,LLC (formerly Shealy Environmetal Services,Inc.) 106 Vantage Point Drive West Columbia,SC 29172 (803)791-9700 Fax (803)791-9111 www.pacelabs.com The MS/MSD for batch 63953 and parent sample XL31002-010 (Leachate-Unit 2 ph2),recovered outside the lower control limit.The associated LCS passed acceptance criteria.The MS/MSD RPD was >20%. BOD For samples XL31002-009 and XL31002-010,QC bottles 1,2 and 4-10 for BOD_63955 were recorded with initial DO values below the criteria minimum of 8.56 mg/L for setup procedure. XL31002-009 (Leachate-Unit 2 ph1)(Run 1)(Analysis Batch 63955)BOD,5 day XL31002-010 (Leachate-Unit 2 ph2)(Run 1)(Analysis Batch 63955)BOD,5 day If you have any questions regarding this report,please contact the Pace Project Manager listed on the cover page. Page 5 of 104 PACE ANALYTICAL SERVICES, LLC Sample Summary Buxton Environmental Lot Number: XL31002 Project Name: Gaston Co Unit II MSW Landfill-Hardin Site Project Number: 3606 Sample Number Sample ID Matrix Date Sampled Date Received 001 12/29/2022 1430MW-1 Aqueous 12/31/2022 002 12/30/2022 1100MW-24 Aqueous 12/31/2022 003 12/30/2022 1000MW-25 Aqueous 12/31/2022 004 12/29/2022 1600MW-26 Aqueous 12/31/2022 005 12/29/2022 1530MW-27 Aqueous 12/31/2022 006 12/29/2022 1500MW-31 Aqueous 12/31/2022 007 12/29/2022 1145US-1 Aqueous 12/31/2022 008 12/30/2022 1330DS-1 Aqueous 12/31/2022 009 12/30/2022 1030Leachate-Unit 2 ph1 Aqueous 12/31/2022 010 12/30/2022 1115Leachate-Unit 2 ph2 Aqueous 12/31/2022 011 12/30/2022 1535Equipment Blank Aqueous 12/31/2022 012 12/29/2022 1215MW-12 Aqueous 12/31/2022 013 12/29/2022 1330MW-13 Aqueous 12/31/2022 014 12/29/2022 1245MW-14 Aqueous 12/31/2022 015 12/30/2022 1145FD-1 Aqueous 12/31/2022 (15 samples) 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 6 of 104 PACE ANALYTICAL SERVICES, LLC Detection Summary Buxton Environmental Lot Number: XL31002 Project Name: Gaston Co Unit II MSW Landfill-Hardin Site Project Number: 3606 Sample Sample ID Matrix Parameter Method Result Q Units Page 001 MW-1 Aqueous Barium 6020B 12 ug/L 13 002 MW-24 Aqueous Acetone 8260D 15 J ug/L 14 002 MW-24 Aqueous cis-1,2-Dichloroethene 8260D 0.43 J ug/L 14 002 MW-24 Aqueous Barium 6020B 120 ug/L 16 002 MW-24 Aqueous Beryllium 6020B 0.19 J ug/L 16 002 MW-24 Aqueous Cadmium 6020B 0.24 J ug/L 16 002 MW-24 Aqueous Cobalt 6020B 49 ug/L 16 002 MW-24 Aqueous Copper 6020B 3.1 J ug/L 16 002 MW-24 Aqueous Nickel 6020B 2.7 J ug/L 16 002 MW-24 Aqueous Thallium 6020B 0.26 J ug/L 16 002 MW-24 Aqueous Zinc 6020B 4.2 J ug/L 16 003 MW-25 Aqueous Barium 6020B 34 ug/L 19 003 MW-25 Aqueous Beryllium 6020B 0.27 J ug/L 19 003 MW-25 Aqueous Cadmium 6020B 3.4 ug/L 19 003 MW-25 Aqueous Copper 6020B 1.3 J ug/L 19 003 MW-25 Aqueous Lead 6020B 0.36 J ug/L 19 003 MW-25 Aqueous Zinc 6020B 4.2 J ug/L 19 004 MW-26 Aqueous Barium 6020B 86 ug/L 22 004 MW-26 Aqueous Beryllium 6020B 0.24 J ug/L 22 004 MW-26 Aqueous Cadmium 6020B 0.19 J ug/L 22 004 MW-26 Aqueous Chromium 6020B 3.9 J ug/L 22 004 MW-26 Aqueous Copper 6020B 1.9 J ug/L 22 004 MW-26 Aqueous Lead 6020B 0.32 J ug/L 22 004 MW-26 Aqueous Zinc 6020B 5.9 J ug/L 22 005 MW-27 Aqueous Barium 6020B 56 ug/L 25 005 MW-27 Aqueous Beryllium 6020B 0.44 ug/L 25 005 MW-27 Aqueous Lead 6020B 0.41 J ug/L 25 005 MW-27 Aqueous Zinc 6020B 2.7 J ug/L 25 006 MW-31 Aqueous Barium 6020B 200 ug/L 28 006 MW-31 Aqueous Beryllium 6020B 0.47 ug/L 28 006 MW-31 Aqueous Cadmium 6020B 0.30 J ug/L 28 006 MW-31 Aqueous Copper 6020B 2.4 J ug/L 28 006 MW-31 Aqueous Thallium 6020B 0.15 J ug/L 28 006 MW-31 Aqueous Zinc 6020B 3.7 J ug/L 28 007 US-1 Aqueous Acetone 8260D 5.0 JL ug/L 29 007 US-1 Aqueous Barium 6020B 33 ug/L 32 007 US-1 Aqueous Copper 6020B 1.5 J ug/L 32 008 DS-1 Aqueous Barium 6020B 37 ug/L 36 008 DS-1 Aqueous Lead 6020B 0.44 J ug/L 36 009 Leachate-Unit 2 ph1 Aqueous BOD, 5 day SM 5210B-38 mg/L 37 009 Leachate-Unit 2 ph1 Aqueous COD SM 5220D-590 mg/L 37 009 Leachate-Unit 2 ph1 Aqueous Nitrate - N 353.2 0.22 L mg/L 37 009 Leachate-Unit 2 ph1 Aqueous Sulfate 300.0 4.7 mg/L 37 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 7 of 104 Detection Summary (Continued) Lot Number: XL31002 Sample Sample ID Matrix Parameter Method Result Q Units Page 009 Leachate-Unit 2 ph1 Aqueous Acetone 8260D 75 ug/L 38 009 Leachate-Unit 2 ph1 Aqueous Benzene 8260D 12 ug/L 38 009 Leachate-Unit 2 ph1 Aqueous 2-Butanone (MEK)8260D 140 ug/L 38 009 Leachate-Unit 2 ph1 Aqueous Chlorobenzene 8260D 0.55 J ug/L 38 009 Leachate-Unit 2 ph1 Aqueous 1,4-Dichlorobenzene 8260D 5.9 ug/L 38 009 Leachate-Unit 2 ph1 Aqueous 1,1-Dichloroethane 8260D 0.65 J ug/L 38 009 Leachate-Unit 2 ph1 Aqueous 1,2-Dichloroethane 8260D 1.1 ug/L 38 009 Leachate-Unit 2 ph1 Aqueous cis-1,2-Dichloroethene 8260D 1.1 ug/L 38 009 Leachate-Unit 2 ph1 Aqueous 1,2-Dichloropropane 8260D 0.49 J ug/L 38 009 Leachate-Unit 2 ph1 Aqueous Ethylbenzene 8260D 23 ug/L 38 009 Leachate-Unit 2 ph1 Aqueous 2-Hexanone 8260D 5.3 JL ug/L 38 009 Leachate-Unit 2 ph1 Aqueous 4-Methyl-2-pentanone 8260D 4.7 J ug/L 38 009 Leachate-Unit 2 ph1 Aqueous Styrene 8260D 3.0 ug/L 38 009 Leachate-Unit 2 ph1 Aqueous Toluene 8260D 19 ug/L 38 009 Leachate-Unit 2 ph1 Aqueous Vinyl chloride 8260D 1.3 ug/L 39 009 Leachate-Unit 2 ph1 Aqueous Xylenes (total)8260D 59 ug/L 39 009 Leachate-Unit 2 ph1 Aqueous 1,4-Dioxane 8260D (SIM)35 ug/L 40 009 Leachate-Unit 2 ph1 Aqueous Antimony 6020B 7.3 J ug/L 41 009 Leachate-Unit 2 ph1 Aqueous Arsenic 6020B 28 ug/L 41 009 Leachate-Unit 2 ph1 Aqueous Barium 6020B 1100 ug/L 41 009 Leachate-Unit 2 ph1 Aqueous Chromium 6020B 24 J ug/L 41 009 Leachate-Unit 2 ph1 Aqueous Cobalt 6020B 16 J ug/L 41 009 Leachate-Unit 2 ph1 Aqueous Nickel 6020B 42 ug/L 41 009 Leachate-Unit 2 ph1 Aqueous Vanadium 6020B 34 ug/L 41 010 Leachate-Unit 2 ph2 Aqueous BOD, 5 day SM 5210B-99 mg/L 42 010 Leachate-Unit 2 ph2 Aqueous COD SM 5220D-710 mg/L 42 010 Leachate-Unit 2 ph2 Aqueous Nitrate - N 353.2 0.19 L mg/L 42 010 Leachate-Unit 2 ph2 Aqueous Sulfate 300.0 22 mg/L 42 010 Leachate-Unit 2 ph2 Aqueous Acetone 8260D 350 S ug/L 43 010 Leachate-Unit 2 ph2 Aqueous Benzene 8260D 15 ug/L 43 010 Leachate-Unit 2 ph2 Aqueous 2-Butanone (MEK)8260D 720 ug/L 43 010 Leachate-Unit 2 ph2 Aqueous Chlorobenzene 8260D 0.91 J ug/L 43 010 Leachate-Unit 2 ph2 Aqueous 1,4-Dichlorobenzene 8260D 10 ug/L 43 010 Leachate-Unit 2 ph2 Aqueous 1,1-Dichloroethane 8260D 0.96 J ug/L 43 010 Leachate-Unit 2 ph2 Aqueous 1,2-Dichloroethane 8260D 3.8 ug/L 43 010 Leachate-Unit 2 ph2 Aqueous cis-1,2-Dichloroethene 8260D 10 ug/L 43 010 Leachate-Unit 2 ph2 Aqueous trans-1,2-Dichloroethene 8260D 0.80 J ug/L 43 010 Leachate-Unit 2 ph2 Aqueous 1,2-Dichloropropane 8260D 2.0 ug/L 43 010 Leachate-Unit 2 ph2 Aqueous Ethylbenzene 8260D 56 ug/L 43 010 Leachate-Unit 2 ph2 Aqueous 2-Hexanone 8260D 9.7 JL ug/L 43 010 Leachate-Unit 2 ph2 Aqueous 4-Methyl-2-pentanone 8260D 140 ug/L 43 010 Leachate-Unit 2 ph2 Aqueous Methylene chloride 8260D 2.0 ug/L 43 010 Leachate-Unit 2 ph2 Aqueous Styrene 8260D 13 ug/L 43 010 Leachate-Unit 2 ph2 Aqueous Toluene 8260D 180 ug/L 43 010 Leachate-Unit 2 ph2 Aqueous Trichloroethene 8260D 0.80 J ug/L 43 010 Leachate-Unit 2 ph2 Aqueous Vinyl chloride 8260D 5.7 ug/L 44 010 Leachate-Unit 2 ph2 Aqueous Xylenes (total)8260D 160 ug/L 44 010 Leachate-Unit 2 ph2 Aqueous 1,4-Dioxane 8260D (SIM)26 ug/L 45 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 8 of 104 Detection Summary (Continued) Lot Number: XL31002 Sample Sample ID Matrix Parameter Method Result Q Units Page 010 Leachate-Unit 2 ph2 Aqueous Arsenic 6020B 15 ug/L 46 010 Leachate-Unit 2 ph2 Aqueous Barium 6020B 760 ug/L 46 010 Leachate-Unit 2 ph2 Aqueous Chromium 6020B 21 J ug/L 46 010 Leachate-Unit 2 ph2 Aqueous Cobalt 6020B 10 J ug/L 46 010 Leachate-Unit 2 ph2 Aqueous Nickel 6020B 34 ug/L 46 010 Leachate-Unit 2 ph2 Aqueous Vanadium 6020B 21 J ug/L 46 010 Leachate-Unit 2 ph2 Aqueous Zinc 6020B 19 J ug/L 46 011 Equipment Blank Aqueous Methylene chloride 8260D 2.1 ug/L 47 012 MW-12 Aqueous Barium 6020B 70 ug/L 51 013 MW-13 Aqueous Acetone 8260D 5.0 JL ug/L 52 013 MW-13 Aqueous Barium 6020B 64 ug/L 54 013 MW-13 Aqueous Cadmium 6020B 0.19 J ug/L 54 013 MW-13 Aqueous Chromium 6020B 3.9 J ug/L 54 013 MW-13 Aqueous Lead 6020B 3.5 ug/L 54 013 MW-13 Aqueous Selenium 6020B 1.4 J ug/L 54 014 MW-14 Aqueous Barium 6020B 150 ug/L 57 015 FD-1 Aqueous Benzene 8260D 0.53 J ug/L 58 015 FD-1 Aqueous Arsenic 6020B 2.8 ug/L 60 015 FD-1 Aqueous Barium 6020B 200 ug/L 60 015 FD-1 Aqueous Chromium 6020B 1.4 J ug/L 60 015 FD-1 Aqueous Cobalt 6020B 10 ug/L 60 015 FD-1 Aqueous Copper 6020B 3.7 J ug/L 60 015 FD-1 Aqueous Lead 6020B 0.83 J ug/L 60 015 FD-1 Aqueous Nickel 6020B 2.7 J ug/L 60 015 FD-1 Aqueous Zinc 6020B 6.0 J ug/L 60 (116 detections) 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 9 of 104 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-1 XL31002-001 12/29/2022 1430 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0316 JMM2 64266 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND L 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D ND 1ug/L0.401.0 Bromochloromethane 74-97-5 8260D ND 1ug/L0.401.0 Bromodichloromethane 75-27-4 8260D ND 1ug/L0.401.0 Bromoform 75-25-2 8260D ND 1ug/L0.401.0 Bromomethane (Methyl bromide)74-83-9 8260D ND 1ug/L0.402.0 2-Butanone (MEK)78-93-3 8260D ND L 1ug/L2.010 Carbon disulfide 75-15-0 8260D ND 1ug/L0.401.0 Carbon tetrachloride 56-23-5 8260D ND 1ug/L0.401.0 Chlorobenzene 108-90-7 8260D ND 1ug/L0.401.0 Chloroethane 75-00-3 8260D ND 1ug/L0.402.0 Chloroform 67-66-3 8260D ND 1ug/L0.401.0 Chloromethane (Methyl chloride)74-87-3 8260D ND 1ug/L0.501.0 1,2-Dibromo-3-chloropropane (DBCP)96-12-8 8260D ND 1ug/L0.401.0 Dibromochloromethane 124-48-1 8260D ND 1ug/L0.401.0 1,2-Dibromoethane (EDB)106-93-4 8260D ND 1ug/L0.401.0 Dibromomethane (Methylene bromide)74-95-3 8260D ND 1ug/L0.401.0 trans-1,4-Dichloro-2-butene 110-57-6 8260D ND 1ug/L0.502.0 1,2-Dichlorobenzene 95-50-1 8260D ND 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D ND 1ug/L0.401.0 1,1-Dichloroethane 75-34-3 8260D ND 1ug/L0.401.0 1,2-Dichloroethane 107-06-2 8260D ND 1ug/L0.401.0 1,1-Dichloroethene 75-35-4 8260D ND 1ug/L0.401.0 cis-1,2-Dichloroethene 156-59-2 8260D ND 1ug/L0.401.0 trans-1,2-Dichloroethene 156-60-5 8260D ND 1ug/L0.401.0 1,2-Dichloropropane 78-87-5 8260D ND 1ug/L0.401.0 cis-1,3-Dichloropropene 10061-01-5 8260D ND 1ug/L0.401.0 trans-1,3-Dichloropropene 10061-02-6 8260D ND 1ug/L0.401.0 1,4-Dioxane 123-91-1 8260D ND L 1ug/L1350 Ethylbenzene 100-41-4 8260D ND 1ug/L0.401.0 2-Hexanone 591-78-6 8260D ND L 1ug/L2.010 Methyl iodide (Iodomethane)74-88-4 8260D ND 1ug/L0.405.0 4-Methyl-2-pentanone 108-10-1 8260D ND 1ug/L2.010 Methylene chloride 75-09-2 8260D ND 1ug/L0.401.0 Styrene 100-42-5 8260D ND 1ug/L0.411.0 1,1,1,2-Tetrachloroethane 630-20-6 8260D ND 1ug/L0.401.0 1,1,2,2-Tetrachloroethane 79-34-5 8260D ND 1ug/L0.401.0 Tetrachloroethene 127-18-4 8260D ND 1ug/L0.401.0 Toluene 108-88-3 8260D ND 1ug/L0.401.0 1,1,1-Trichloroethane 71-55-6 8260D ND 1ug/L0.401.0 1,1,2-Trichloroethane 79-00-5 8260D ND 1ug/L0.401.0 Trichloroethene 79-01-6 8260D ND 1ug/L0.401.0 Trichlorofluoromethane 75-69-4 8260D ND 1ug/L0.401.0 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 10 of 104 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-1 XL31002-001 12/29/2022 1430 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0316 JMM2 64266 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL 1,2,3-Trichloropropane 96-18-4 8260D ND 1ug/L0.401.0 Vinyl acetate 108-05-4 8260D ND 1ug/L1.25.0 Vinyl chloride 75-01-4 8260D ND 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D ND 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 106 70-130 1,2-Dichloroethane-d4 109 70-130 Toluene-d8 110 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 11 of 104 Volatile Organic Compounds by GC/MS (SIM) Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-1 XL31002-001 12/29/2022 1430 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D (SIM)1 01/05/2023 1251 BLM 64214 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL 1,4-Dioxane 123-91-1 8260D (SIM)ND 1ug/L1.03.0 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 92 40-170 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 12 of 104 ICP-MS Metals Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-1 XL31002-001 12/29/2022 1430 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 3005A 6020B 1 01/05/2023 0131 BNW 01/03/2023 1530 63980 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Antimony 7440-36-0 6020B ND 1ug/L0.502.0 Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 12 1ug/L1.35.0 Beryllium 7440-41-7 6020B ND 1ug/L0.150.40 Cadmium 7440-43-9 6020B ND 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Cobalt 7440-48-4 6020B ND 1ug/L1.35.0 Copper 7440-50-8 6020B ND 1ug/L1.35.0 Lead 7439-92-1 6020B ND 1ug/L0.251.0 Nickel 7440-02-0 6020B ND 1ug/L1.35.0 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 Thallium 7440-28-0 6020B ND 1ug/L0.150.50 Vanadium 7440-62-2 6020B ND 1ug/L2.55.0 Zinc 7440-66-6 6020B ND 1ug/L2.510 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 13 of 104 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental US-1 XL31002-007 12/29/2022 1145 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0544 JMM2 64266 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D 5.0 JL 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D ND 1ug/L0.401.0 Bromochloromethane 74-97-5 8260D ND 1ug/L0.401.0 Bromodichloromethane 75-27-4 8260D ND 1ug/L0.401.0 Bromoform 75-25-2 8260D ND 1ug/L0.401.0 Bromomethane (Methyl bromide)74-83-9 8260D ND 1ug/L0.402.0 2-Butanone (MEK)78-93-3 8260D ND L 1ug/L2.010 Carbon disulfide 75-15-0 8260D ND 1ug/L0.401.0 Carbon tetrachloride 56-23-5 8260D ND 1ug/L0.401.0 Chlorobenzene 108-90-7 8260D ND 1ug/L0.401.0 Chloroethane 75-00-3 8260D ND 1ug/L0.402.0 Chloroform 67-66-3 8260D ND 1ug/L0.401.0 Chloromethane (Methyl chloride)74-87-3 8260D ND 1ug/L0.501.0 1,2-Dibromo-3-chloropropane (DBCP)96-12-8 8260D ND 1ug/L0.401.0 Dibromochloromethane 124-48-1 8260D ND 1ug/L0.401.0 1,2-Dibromoethane (EDB)106-93-4 8260D ND 1ug/L0.401.0 Dibromomethane (Methylene bromide)74-95-3 8260D ND 1ug/L0.401.0 trans-1,4-Dichloro-2-butene 110-57-6 8260D ND 1ug/L0.502.0 1,2-Dichlorobenzene 95-50-1 8260D ND 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D ND 1ug/L0.401.0 1,1-Dichloroethane 75-34-3 8260D ND 1ug/L0.401.0 1,2-Dichloroethane 107-06-2 8260D ND 1ug/L0.401.0 1,1-Dichloroethene 75-35-4 8260D ND 1ug/L0.401.0 cis-1,2-Dichloroethene 156-59-2 8260D ND 1ug/L0.401.0 trans-1,2-Dichloroethene 156-60-5 8260D ND 1ug/L0.401.0 1,2-Dichloropropane 78-87-5 8260D ND 1ug/L0.401.0 cis-1,3-Dichloropropene 10061-01-5 8260D ND 1ug/L0.401.0 trans-1,3-Dichloropropene 10061-02-6 8260D ND 1ug/L0.401.0 1,4-Dioxane 123-91-1 8260D ND L 1ug/L1350 Ethylbenzene 100-41-4 8260D ND 1ug/L0.401.0 2-Hexanone 591-78-6 8260D ND L 1ug/L2.010 Methyl iodide (Iodomethane)74-88-4 8260D ND 1ug/L0.405.0 4-Methyl-2-pentanone 108-10-1 8260D ND 1ug/L2.010 Methylene chloride 75-09-2 8260D ND 1ug/L0.401.0 Styrene 100-42-5 8260D ND 1ug/L0.411.0 1,1,1,2-Tetrachloroethane 630-20-6 8260D ND 1ug/L0.401.0 1,1,2,2-Tetrachloroethane 79-34-5 8260D ND 1ug/L0.401.0 Tetrachloroethene 127-18-4 8260D ND 1ug/L0.401.0 Toluene 108-88-3 8260D ND 1ug/L0.401.0 1,1,1-Trichloroethane 71-55-6 8260D ND 1ug/L0.401.0 1,1,2-Trichloroethane 79-00-5 8260D ND 1ug/L0.401.0 Trichloroethene 79-01-6 8260D ND 1ug/L0.401.0 Trichlorofluoromethane 75-69-4 8260D ND 1ug/L0.401.0 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 29 of 104 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental US-1 XL31002-007 12/29/2022 1145 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0544 JMM2 64266 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL 1,2,3-Trichloropropane 96-18-4 8260D ND 1ug/L0.401.0 Vinyl acetate 108-05-4 8260D ND 1ug/L1.25.0 Vinyl chloride 75-01-4 8260D ND 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D ND 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 104 70-130 1,2-Dichloroethane-d4 108 70-130 Toluene-d8 110 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 30 of 104 Volatile Organic Compounds by GC/MS (SIM) Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental US-1 XL31002-007 12/29/2022 1145 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D (SIM)1 01/05/2023 1315 BLM 64214 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL 1,4-Dioxane 123-91-1 8260D (SIM)ND 1ug/L1.03.0 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 92 40-170 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 31 of 104 ICP-MS Metals Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental US-1 XL31002-007 12/29/2022 1145 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 3005A 6020B 1 01/05/2023 0337 BNW 01/03/2023 1530 63980 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Antimony 7440-36-0 6020B ND 1ug/L0.502.0 Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 33 1ug/L1.35.0 Beryllium 7440-41-7 6020B ND 1ug/L0.150.40 Cadmium 7440-43-9 6020B ND 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Cobalt 7440-48-4 6020B ND 1ug/L1.35.0 Copper 7440-50-8 6020B 1.5 J 1ug/L1.35.0 Lead 7439-92-1 6020B ND 1ug/L0.251.0 Nickel 7440-02-0 6020B ND 1ug/L1.35.0 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 Thallium 7440-28-0 6020B ND 1ug/L0.150.50 Vanadium 7440-62-2 6020B ND 1ug/L2.55.0 Zinc 7440-66-6 6020B ND 1ug/L2.510 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 32 of 104 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental DS-1 XL31002-008 12/30/2022 1330 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0609 JMM2 64266 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND L 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D ND 1ug/L0.401.0 Bromochloromethane 74-97-5 8260D ND 1ug/L0.401.0 Bromodichloromethane 75-27-4 8260D ND 1ug/L0.401.0 Bromoform 75-25-2 8260D ND 1ug/L0.401.0 Bromomethane (Methyl bromide)74-83-9 8260D ND 1ug/L0.402.0 2-Butanone (MEK)78-93-3 8260D ND L 1ug/L2.010 Carbon disulfide 75-15-0 8260D ND 1ug/L0.401.0 Carbon tetrachloride 56-23-5 8260D ND 1ug/L0.401.0 Chlorobenzene 108-90-7 8260D ND 1ug/L0.401.0 Chloroethane 75-00-3 8260D ND 1ug/L0.402.0 Chloroform 67-66-3 8260D ND 1ug/L0.401.0 Chloromethane (Methyl chloride)74-87-3 8260D ND 1ug/L0.501.0 1,2-Dibromo-3-chloropropane (DBCP)96-12-8 8260D ND 1ug/L0.401.0 Dibromochloromethane 124-48-1 8260D ND 1ug/L0.401.0 1,2-Dibromoethane (EDB)106-93-4 8260D ND 1ug/L0.401.0 Dibromomethane (Methylene bromide)74-95-3 8260D ND 1ug/L0.401.0 trans-1,4-Dichloro-2-butene 110-57-6 8260D ND 1ug/L0.502.0 1,2-Dichlorobenzene 95-50-1 8260D ND 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D ND 1ug/L0.401.0 1,1-Dichloroethane 75-34-3 8260D ND 1ug/L0.401.0 1,2-Dichloroethane 107-06-2 8260D ND 1ug/L0.401.0 1,1-Dichloroethene 75-35-4 8260D ND 1ug/L0.401.0 cis-1,2-Dichloroethene 156-59-2 8260D ND 1ug/L0.401.0 trans-1,2-Dichloroethene 156-60-5 8260D ND 1ug/L0.401.0 1,2-Dichloropropane 78-87-5 8260D ND 1ug/L0.401.0 cis-1,3-Dichloropropene 10061-01-5 8260D ND 1ug/L0.401.0 trans-1,3-Dichloropropene 10061-02-6 8260D ND 1ug/L0.401.0 1,4-Dioxane 123-91-1 8260D ND L 1ug/L1350 Ethylbenzene 100-41-4 8260D ND 1ug/L0.401.0 2-Hexanone 591-78-6 8260D ND L 1ug/L2.010 Methyl iodide (Iodomethane)74-88-4 8260D ND 1ug/L0.405.0 4-Methyl-2-pentanone 108-10-1 8260D ND 1ug/L2.010 Methylene chloride 75-09-2 8260D ND 1ug/L0.401.0 Styrene 100-42-5 8260D ND 1ug/L0.411.0 1,1,1,2-Tetrachloroethane 630-20-6 8260D ND 1ug/L0.401.0 1,1,2,2-Tetrachloroethane 79-34-5 8260D ND 1ug/L0.401.0 Tetrachloroethene 127-18-4 8260D ND 1ug/L0.401.0 Toluene 108-88-3 8260D ND 1ug/L0.401.0 1,1,1-Trichloroethane 71-55-6 8260D ND 1ug/L0.401.0 1,1,2-Trichloroethane 79-00-5 8260D ND 1ug/L0.401.0 Trichloroethene 79-01-6 8260D ND 1ug/L0.401.0 Trichlorofluoromethane 75-69-4 8260D ND 1ug/L0.401.0 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 33 of 104 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental DS-1 XL31002-008 12/30/2022 1330 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0609 JMM2 64266 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL 1,2,3-Trichloropropane 96-18-4 8260D ND 1ug/L0.401.0 Vinyl acetate 108-05-4 8260D ND 1ug/L1.25.0 Vinyl chloride 75-01-4 8260D ND 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D ND 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 107 70-130 1,2-Dichloroethane-d4 108 70-130 Toluene-d8 112 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 34 of 104 Volatile Organic Compounds by GC/MS (SIM) Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental DS-1 XL31002-008 12/30/2022 1330 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D (SIM)1 01/05/2023 1340 BLM 64214 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL 1,4-Dioxane 123-91-1 8260D (SIM)ND 1ug/L1.03.0 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 93 40-170 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 35 of 104 ICP-MS Metals Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental DS-1 XL31002-008 12/30/2022 1330 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 3005A 6020B 1 01/05/2023 0347 BNW 01/03/2023 1530 63980 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Antimony 7440-36-0 6020B ND 1ug/L0.502.0 Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 37 1ug/L1.35.0 Beryllium 7440-41-7 6020B ND 1ug/L0.150.40 Cadmium 7440-43-9 6020B ND 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Cobalt 7440-48-4 6020B ND 1ug/L1.35.0 Copper 7440-50-8 6020B ND 1ug/L1.35.0 Lead 7439-92-1 6020B 0.44 J 1ug/L0.251.0 Nickel 7440-02-0 6020B ND 1ug/L1.35.0 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 Thallium 7440-28-0 6020B ND 1ug/L0.150.50 Vanadium 7440-62-2 6020B ND 1ug/L2.55.0 Zinc 7440-66-6 6020B ND 1ug/L2.510 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 36 of 104 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental Equipment Blank XL31002-011 12/30/2022 1535 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0136 JMM2 64266 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND L 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D ND 1ug/L0.401.0 Bromochloromethane 74-97-5 8260D ND 1ug/L0.401.0 Bromodichloromethane 75-27-4 8260D ND 1ug/L0.401.0 Bromoform 75-25-2 8260D ND 1ug/L0.401.0 Bromomethane (Methyl bromide)74-83-9 8260D ND 1ug/L0.402.0 2-Butanone (MEK)78-93-3 8260D ND L 1ug/L2.010 Carbon disulfide 75-15-0 8260D ND 1ug/L0.401.0 Carbon tetrachloride 56-23-5 8260D ND 1ug/L0.401.0 Chlorobenzene 108-90-7 8260D ND 1ug/L0.401.0 Chloroethane 75-00-3 8260D ND 1ug/L0.402.0 Chloroform 67-66-3 8260D ND 1ug/L0.401.0 Chloromethane (Methyl chloride)74-87-3 8260D ND 1ug/L0.501.0 1,2-Dibromo-3-chloropropane (DBCP)96-12-8 8260D ND 1ug/L0.401.0 Dibromochloromethane 124-48-1 8260D ND 1ug/L0.401.0 1,2-Dibromoethane (EDB)106-93-4 8260D ND 1ug/L0.401.0 Dibromomethane (Methylene bromide)74-95-3 8260D ND 1ug/L0.401.0 trans-1,4-Dichloro-2-butene 110-57-6 8260D ND 1ug/L0.502.0 1,2-Dichlorobenzene 95-50-1 8260D ND 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D ND 1ug/L0.401.0 1,1-Dichloroethane 75-34-3 8260D ND 1ug/L0.401.0 1,2-Dichloroethane 107-06-2 8260D ND 1ug/L0.401.0 1,1-Dichloroethene 75-35-4 8260D ND 1ug/L0.401.0 cis-1,2-Dichloroethene 156-59-2 8260D ND 1ug/L0.401.0 trans-1,2-Dichloroethene 156-60-5 8260D ND 1ug/L0.401.0 1,2-Dichloropropane 78-87-5 8260D ND 1ug/L0.401.0 cis-1,3-Dichloropropene 10061-01-5 8260D ND 1ug/L0.401.0 trans-1,3-Dichloropropene 10061-02-6 8260D ND 1ug/L0.401.0 1,4-Dioxane 123-91-1 8260D ND L 1ug/L1350 Ethylbenzene 100-41-4 8260D ND 1ug/L0.401.0 2-Hexanone 591-78-6 8260D ND L 1ug/L2.010 Methyl iodide (Iodomethane)74-88-4 8260D ND 1ug/L0.405.0 4-Methyl-2-pentanone 108-10-1 8260D ND 1ug/L2.010 Methylene chloride 75-09-2 8260D 2.1 1ug/L0.401.0 Styrene 100-42-5 8260D ND 1ug/L0.411.0 1,1,1,2-Tetrachloroethane 630-20-6 8260D ND 1ug/L0.401.0 1,1,2,2-Tetrachloroethane 79-34-5 8260D ND 1ug/L0.401.0 Tetrachloroethene 127-18-4 8260D ND 1ug/L0.401.0 Toluene 108-88-3 8260D ND 1ug/L0.401.0 1,1,1-Trichloroethane 71-55-6 8260D ND 1ug/L0.401.0 1,1,2-Trichloroethane 79-00-5 8260D ND 1ug/L0.401.0 Trichloroethene 79-01-6 8260D ND 1ug/L0.401.0 Trichlorofluoromethane 75-69-4 8260D ND 1ug/L0.401.0 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 47 of 104 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental Equipment Blank XL31002-011 12/30/2022 1535 12/31/2022 Aqueous Project Name: Gaston Co Unit II MSW Project Number: 3606 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0136 JMM2 64266 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL 1,2,3-Trichloropropane 96-18-4 8260D ND 1ug/L0.401.0 Vinyl acetate 108-05-4 8260D ND 1ug/L1.25.0 Vinyl chloride 75-01-4 8260D ND 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D ND 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 109 70-130 1,2-Dichloroethane-d4 109 70-130 Toluene-d8 113 70-130 J = Estimated result < LOQ and > DL_ LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range P = The RPD between two GC columns exceeds 40%ND = Not detected at or above the DL N = Recovery is out of criteria H = Out of holding time Q = Surrogate failure L = LCS/LCSD failure S = MS/MSD failure DL = Detection Limit W = Reported on wet weight basis 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 48 of 104 QC Summary 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 61 of 104 Inorganic non-metals - MB Batch: Sample ID:XQ63953-001 63953 Analytical Method:365.1 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Orthophosphate ND 12/31/2022 14320.050 0.050 mg/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 62 of 104 Inorganic non-metals - LCS Batch: Sample ID:XQ63953-002 63953 Analytical Method:365.1 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(mg/L)(mg/L) Orthophosphate 0.24 12/31/2022 1432940.25 90-1101 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 63 of 104 Inorganic non-metals - MS Batch: Sample ID:XL31002-010MS 63953 Analytical Method:365.1 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(mg/L)(mg/L)(mg/L) Orthophosphate 0.010 12/31/2022 1432N4.10.25 90-110ND1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 64 of 104 Inorganic non-metals - MSD Batch: Sample ID:XL31002-010MD 63953 Analytical Method:365.1 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(mg/L)(mg/L)(mg/L) Orthophosphate 0.014 12/31/2022 1432N,+5.40.25 90-11029 20ND1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 65 of 104 Inorganic non-metals - MB Batch: Sample ID:XQ63954-001 63954 Analytical Method:353.2 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Nitrate - N ND 12/31/2022 15070.020 0.010 mg/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 66 of 104 Inorganic non-metals - LCS Batch: Sample ID:XQ63954-002 63954 Analytical Method:353.2 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(mg/L)(mg/L) Nitrate - N 0.46 12/31/2022 1509N1160.40 90-1101 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 67 of 104 Inorganic non-metals - MS Batch: Sample ID:XL31002-009MS 63954 Analytical Method:353.2 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(mg/L)(mg/L)(mg/L) Nitrate - N 0.64 12/31/2022 15121060.40 90-1100.22 1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 68 of 104 Inorganic non-metals - MSD Batch: Sample ID:XL31002-009MD 63954 Analytical Method:353.2 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(mg/L)(mg/L)(mg/L) Nitrate - N 0.62 12/31/2022 1514980.40 90-1104.6 200.22 1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 69 of 104 Inorganic non-metals - BOD Blank and GGA Batch:SCF: SCF Range: 63955 0.6 - 1.0Analytical Method:SM 5210B-2011 Matrix:Aqueous 0.5 Sample ID Result Q Limit Analysis DateDeplAvg. Depl (mg/L) Avg. Result (mg/L)Prep Date XQ63955-041 (Blank)01/05/2023 15170.2 12/31/2022 1511-0.01 XQ63955-141 (Blank)01/05/2023 15170.2 12/31/2022 15110.07 XQ63955-241 (Blank)01/05/2023 15170.20.03 12/31/2022 15110.02 XQ63955-035 (GGA)174 01/05/2023 1520167.5-228.5 12/31/2022 1518 XQ63955-135 (GGA)190.5 01/05/2023 1521167.5-228.5 12/31/2022 1518 XQ63955-235 (GGA)149.5 01/05/2023 15211167.5-228.5 12/31/2022 1518171.3 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 70 of 104 Inorganic non-metals - Duplicate Batch: Sample ID:XL31002-009DU 63955 Analytical Method:SM 5210B-2011 Matrix:Aqueous Parameter Result Q Analysis Date% RPD %RPD Limit Sample Amount Dil(mg/L)(mg/L) BOD, 5 day 46 01/05/2023 15270.00 203846.18 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 71 of 104 Inorganic non-metals - MB Batch: Sample ID:YQ64090-001 64090 Analytical Method:SM 5220D-2011 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil COD ND 01/04/2023 16262020mg/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 72 of 104 Inorganic non-metals - LCS Batch: Sample ID:YQ64090-002 64090 Analytical Method:SM 5220D-2011 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(mg/L)(mg/L) COD 410 01/04/2023 162610240095-1051 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 73 of 104 Inorganic non-metals - MB Batch: Sample ID:YQ64177-001 64177 Analytical Method:300.0 Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Sulfate ND 01/04/2023 12111.0 0.25 mg/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 74 of 104 Inorganic non-metals - LCS Batch: Sample ID:YQ64177-002 64177 Analytical Method:300.0 Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(mg/L)(mg/L) Sulfate 20 01/04/2023 1249992090-1101 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 75 of 104 Volatile Organic Compounds by GC/MS (SIM) - MB Batch:Prep Method: Sample ID:YQ64214-001 64214 5030B Analytical Method:8260D (SIM) Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil 1,4-Dioxane ND 01/05/2023 11133.0 1.0 ug/L1 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 93 40-170 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 76 of 104 Volatile Organic Compounds by GC/MS (SIM) - LCS Batch:Prep Method: Sample ID:YQ64214-002 64214 5030B Analytical Method:8260D (SIM) Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) 1,4-Dioxane 52 01/05/2023 10001045070-1301 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 118 40-170 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 77 of 104 Volatile Organic Compounds by GC/MS (SIM) - MS Batch:Prep Method: Sample ID:XL31002-001MS 64214 5030B Analytical Method:8260D (SIM) Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) 1,4-Dioxane 44 01/05/2023 1958895070-130ND1 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 98 40-170 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 78 of 104 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64265-001 64265 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Acetone ND 01/05/2023 2305205.0 ug/L1 Acrylonitrile ND 01/05/2023 2305200.80 ug/L1 Benzene ND 01/05/2023 23051.0 0.40 ug/L1 Bromochloromethane ND 01/05/2023 23051.0 0.40 ug/L1 Bromodichloromethane ND 01/05/2023 23051.0 0.40 ug/L1 Bromoform ND 01/05/2023 23051.0 0.40 ug/L1 Bromomethane (Methyl bromide)ND 01/05/2023 23052.0 0.40 ug/L1 2-Butanone (MEK)ND 01/05/2023 2305102.0 ug/L1 Carbon disulfide ND 01/05/2023 23051.0 0.40 ug/L1 Carbon tetrachloride ND 01/05/2023 23051.0 0.40 ug/L1 Chlorobenzene ND 01/05/2023 23051.0 0.40 ug/L1 Chloroethane ND 01/05/2023 23052.0 0.40 ug/L1 Chloroform ND 01/05/2023 23051.0 0.40 ug/L1 Chloromethane (Methyl chloride)ND 01/05/2023 23051.0 0.50 ug/L1 1,2-Dibromo-3-chloropropane (DBCP)ND 01/05/2023 23051.0 0.40 ug/L1 Dibromochloromethane ND 01/05/2023 23051.0 0.40 ug/L1 1,2-Dibromoethane (EDB)ND 01/05/2023 23051.0 0.40 ug/L1 Dibromomethane (Methylene bromide)ND 01/05/2023 23051.0 0.40 ug/L1 trans-1,4-Dichloro-2-butene ND 01/05/2023 23052.0 0.50 ug/L1 1,2-Dichlorobenzene ND 01/05/2023 23051.0 0.40 ug/L1 1,4-Dichlorobenzene ND 01/05/2023 23051.0 0.40 ug/L1 1,1-Dichloroethane ND 01/05/2023 23051.0 0.40 ug/L1 1,2-Dichloroethane ND 01/05/2023 23051.0 0.40 ug/L1 1,1-Dichloroethene ND 01/05/2023 23051.0 0.40 ug/L1 cis-1,2-Dichloroethene ND 01/05/2023 23051.0 0.40 ug/L1 trans-1,2-Dichloroethene ND 01/05/2023 23051.0 0.40 ug/L1 1,2-Dichloropropane ND 01/05/2023 23051.0 0.40 ug/L1 cis-1,3-Dichloropropene ND 01/05/2023 23051.0 0.40 ug/L1 trans-1,3-Dichloropropene ND 01/05/2023 23051.0 0.40 ug/L1 1,4-Dioxane ND 01/05/2023 23055013ug/L1 Ethylbenzene ND 01/05/2023 23051.0 0.40 ug/L1 2-Hexanone ND 01/05/2023 2305102.0 ug/L1 Methyl iodide (Iodomethane)ND 01/05/2023 23055.0 0.40 ug/L1 4-Methyl-2-pentanone ND 01/05/2023 2305102.0 ug/L1 Methylene chloride ND 01/05/2023 23051.0 0.40 ug/L1 Styrene ND 01/05/2023 23051.0 0.41 ug/L1 1,1,1,2-Tetrachloroethane ND 01/05/2023 23051.0 0.40 ug/L1 1,1,2,2-Tetrachloroethane ND 01/05/2023 23051.0 0.40 ug/L1 Tetrachloroethene ND 01/05/2023 23051.0 0.40 ug/L1 Toluene ND 01/05/2023 23051.0 0.40 ug/L1 1,1,1-Trichloroethane ND 01/05/2023 23051.0 0.40 ug/L1 1,1,2-Trichloroethane ND 01/05/2023 23051.0 0.40 ug/L1 Trichloroethene ND 01/05/2023 23051.0 0.40 ug/L1 Trichlorofluoromethane ND 01/05/2023 23051.0 0.40 ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 79 of 104 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64265-001 64265 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil 1,2,3-Trichloropropane ND 01/05/2023 23051.0 0.40 ug/L1 Vinyl acetate ND 01/05/2023 23055.0 1.2 ug/L1 Vinyl chloride ND 01/05/2023 23051.0 0.40 ug/L1 Xylenes (total)ND 01/05/2023 23051.0 0.40 ug/L1 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 94 70-130 1,2-Dichloroethane-d4 95 70-130 Toluene-d8 96 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 80 of 104 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64265-002 64265 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Acetone 130 01/05/2023 215513010060-1401 Acrylonitrile 90 01/05/2023 21559010070-1301 Benzene 49 01/05/2023 2155995070-1301 Bromochloromethane 48 01/05/2023 2155965070-1301 Bromodichloromethane 49 01/05/2023 2155995070-1301 Bromoform 42 01/05/2023 2155845070-1301 Bromomethane (Methyl bromide)55 01/05/2023 21551105070-1301 2-Butanone (MEK)99 01/05/2023 21559910070-1301 Carbon disulfide 49 01/05/2023 2155995070-1301 Carbon tetrachloride 47 01/05/2023 2155935070-1301 Chlorobenzene 50 01/05/2023 21551005070-1301 Chloroethane 52 01/05/2023 21551055070-1301 Chloroform 44 01/05/2023 2155885070-1301 Chloromethane (Methyl chloride)56 01/05/2023 21551115060-1401 1,2-Dibromo-3-chloropropane (DBCP)48 01/05/2023 2155955070-1301 Dibromochloromethane 51 01/05/2023 21551015070-1301 1,2-Dibromoethane (EDB)51 01/05/2023 21551025070-1301 Dibromomethane (Methylene bromide)50 01/05/2023 21551005070-1301 trans-1,4-Dichloro-2-butene 41 01/05/2023 2155825070-1301 1,2-Dichlorobenzene 52 01/05/2023 21551045070-1301 1,4-Dichlorobenzene 50 01/05/2023 2155995070-1301 1,1-Dichloroethane 45 01/05/2023 2155905070-1301 1,2-Dichloroethane 50 01/05/2023 21551005070-1301 1,1-Dichloroethene 49 01/05/2023 2155985070-1301 cis-1,2-Dichloroethene 45 01/05/2023 2155905070-1301 trans-1,2-Dichloroethene 46 01/05/2023 2155925070-1301 1,2-Dichloropropane 48 01/05/2023 2155975070-1301 cis-1,3-Dichloropropene 51 01/05/2023 21551015070-1301 trans-1,3-Dichloropropene 51 01/05/2023 21551035070-1301 1,4-Dioxane 440 01/05/2023 21558750060-1401 Ethylbenzene 53 01/05/2023 21551065070-1301 2-Hexanone 100 01/05/2023 215510410070-1301 Methyl iodide (Iodomethane)52 01/05/2023 21551055070-1301 4-Methyl-2-pentanone 99 01/05/2023 21559910070-1301 Methylene chloride 47 01/05/2023 2155955070-1301 Styrene 50 01/05/2023 21551005070-1301 1,1,1,2-Tetrachloroethane 52 01/05/2023 21551045070-1301 1,1,2,2-Tetrachloroethane 49 01/05/2023 2155985070-1301 Tetrachloroethene 50 01/05/2023 21551015070-1301 Toluene 51 01/05/2023 21551025070-1301 1,1,1-Trichloroethane 48 01/05/2023 2155965070-1301 1,1,2-Trichloroethane 52 01/05/2023 21551045070-1301 Trichloroethene 52 01/05/2023 21551055070-1301 Trichlorofluoromethane 54 01/05/2023 21551095070-1301 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 81 of 104 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64265-002 64265 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) 1,2,3-Trichloropropane 48 01/05/2023 2155965070-1301 Vinyl acetate 38 01/05/2023 2155755060-1401 Vinyl chloride 52 01/05/2023 21551055070-1301 Xylenes (total)100 01/05/2023 215510110070-1301 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 94 70-130 1,2-Dichloroethane-d4 90 70-130 Toluene-d8 92 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 82 of 104 Volatile Organic Compounds by GC/MS - LCSD Batch:Prep Method: Sample ID:YQ64265-003 64265 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD LimitDil(ug/L)(ug/L) Acetone 110 01/06/2023 013111310060-14014 201 Acrylonitrile 79 01/06/2023 01317910070-13013 201 Benzene 48 01/06/2023 0131975070-1301.9 201 Bromochloromethane 45 01/06/2023 0131895070-1307.3 201 Bromodichloromethane 48 01/06/2023 0131965070-1303.4 201 Bromoform 43 01/06/2023 0131855070-1301.9 201 Bromomethane (Methyl bromide)57 01/06/2023 01311145070-1303.8 201 2-Butanone (MEK)92 01/06/2023 01319210070-1307.6 201 Carbon disulfide 44 01/06/2023 0131895070-13011 201 Carbon tetrachloride 43 01/06/2023 0131875070-1307.4 201 Chlorobenzene 50 01/06/2023 0131995070-1300.69 201 Chloroethane 53 01/06/2023 01311055070-1300.26 201 Chloroform 42 01/06/2023 0131845070-1303.7 201 Chloromethane (Methyl chloride)58 01/06/2023 01311175060-1404.4 201 1,2-Dibromo-3-chloropropane (DBCP)47 01/06/2023 0131945070-1301.6 201 Dibromochloromethane 51 01/06/2023 01311015070-1300.16 201 1,2-Dibromoethane (EDB)51 01/06/2023 01311025070-1300.28 201 Dibromomethane (Methylene bromide)49 01/06/2023 0131975070-1303.4 201 trans-1,4-Dichloro-2-butene 41 01/06/2023 0131835070-1300.82 201 1,2-Dichlorobenzene 52 01/06/2023 01311045070-1300.062 201 1,4-Dichlorobenzene 49 01/06/2023 0131995070-1300.82 201 1,1-Dichloroethane 43 01/06/2023 0131865070-1304.5 201 1,2-Dichloroethane 48 01/06/2023 0131975070-1303.1 201 1,1-Dichloroethene 43 01/06/2023 0131865070-13014 201 cis-1,2-Dichloroethene 43 01/06/2023 0131875070-1304.1 201 trans-1,2-Dichloroethene 43 01/06/2023 0131865070-1306.8 201 1,2-Dichloropropane 47 01/06/2023 0131935070-1303.8 201 cis-1,3-Dichloropropene 49 01/06/2023 0131985070-1303.6 201 trans-1,3-Dichloropropene 51 01/06/2023 01311015070-1301.6 201 1,4-Dioxane 350 01/06/2023 0131+70500 60-14021 201 Ethylbenzene 52 01/06/2023 01311035070-1302.7 201 2-Hexanone 100 01/06/2023 013110310070-1300.53 201 Methyl iodide (Iodomethane)47 01/06/2023 0131955070-13010 201 4-Methyl-2-pentanone 93 01/06/2023 01319310070-1305.8 201 Methylene chloride 43 01/06/2023 0131855070-13010 201 Styrene 50 01/06/2023 01311005070-1300.15 201 1,1,1,2-Tetrachloroethane 51 01/06/2023 01311025070-1301.4 201 1,1,2,2-Tetrachloroethane 49 01/06/2023 0131975070-1300.48 201 Tetrachloroethene 49 01/06/2023 0131985070-1303.3 201 Toluene 50 01/06/2023 01311005070-1301.5 201 1,1,1-Trichloroethane 43 01/06/2023 0131855070-13012 201 1,1,2-Trichloroethane 52 01/06/2023 01311055070-1300.13 201 Trichloroethene 50 01/06/2023 01311005070-1304.4 201 Trichlorofluoromethane 51 01/06/2023 01311015070-1306.9 201 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 83 of 104 Volatile Organic Compounds by GC/MS - LCSD Batch:Prep Method: Sample ID:YQ64265-003 64265 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD LimitDil(ug/L)(ug/L) 1,2,3-Trichloropropane 49 01/06/2023 0131985070-1302.1 201 Vinyl acetate 37 01/06/2023 0131745060-1401.0 201 Vinyl chloride 53 01/06/2023 01311075070-1301.6 201 Xylenes (total)100 01/06/2023 013110110070-1300.29 201 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 93 70-130 1,2-Dichloroethane-d4 93 70-130 Toluene-d8 93 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 84 of 104 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64266-001 64266 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Acetone ND 01/06/2023 0022205.0 ug/L1 Acrylonitrile ND 01/06/2023 0022200.80 ug/L1 Benzene ND 01/06/2023 00221.0 0.40 ug/L1 Bromochloromethane ND 01/06/2023 00221.0 0.40 ug/L1 Bromodichloromethane ND 01/06/2023 00221.0 0.40 ug/L1 Bromoform ND 01/06/2023 00221.0 0.40 ug/L1 Bromomethane (Methyl bromide)ND 01/06/2023 00222.0 0.40 ug/L1 2-Butanone (MEK)ND 01/06/2023 0022102.0 ug/L1 Carbon disulfide ND 01/06/2023 00221.0 0.40 ug/L1 Carbon tetrachloride ND 01/06/2023 00221.0 0.40 ug/L1 Chlorobenzene ND 01/06/2023 00221.0 0.40 ug/L1 Chloroethane ND 01/06/2023 00222.0 0.40 ug/L1 Chloroform ND 01/06/2023 00221.0 0.40 ug/L1 Chloromethane (Methyl chloride)ND 01/06/2023 00221.0 0.50 ug/L1 1,2-Dibromo-3-chloropropane (DBCP)ND 01/06/2023 00221.0 0.40 ug/L1 Dibromochloromethane ND 01/06/2023 00221.0 0.40 ug/L1 1,2-Dibromoethane (EDB)ND 01/06/2023 00221.0 0.40 ug/L1 Dibromomethane (Methylene bromide)ND 01/06/2023 00221.0 0.40 ug/L1 trans-1,4-Dichloro-2-butene ND 01/06/2023 00222.0 0.50 ug/L1 1,2-Dichlorobenzene ND 01/06/2023 00221.0 0.40 ug/L1 1,4-Dichlorobenzene ND 01/06/2023 00221.0 0.40 ug/L1 1,1-Dichloroethane ND 01/06/2023 00221.0 0.40 ug/L1 1,2-Dichloroethane ND 01/06/2023 00221.0 0.40 ug/L1 1,1-Dichloroethene ND 01/06/2023 00221.0 0.40 ug/L1 cis-1,2-Dichloroethene ND 01/06/2023 00221.0 0.40 ug/L1 trans-1,2-Dichloroethene ND 01/06/2023 00221.0 0.40 ug/L1 1,2-Dichloropropane ND 01/06/2023 00221.0 0.40 ug/L1 cis-1,3-Dichloropropene ND 01/06/2023 00221.0 0.40 ug/L1 trans-1,3-Dichloropropene ND 01/06/2023 00221.0 0.40 ug/L1 1,4-Dioxane ND 01/06/2023 00225013ug/L1 Ethylbenzene ND 01/06/2023 00221.0 0.40 ug/L1 2-Hexanone ND 01/06/2023 0022102.0 ug/L1 Methyl iodide (Iodomethane)ND 01/06/2023 00225.0 0.40 ug/L1 4-Methyl-2-pentanone ND 01/06/2023 0022102.0 ug/L1 Methylene chloride ND 01/06/2023 00221.0 0.40 ug/L1 Styrene ND 01/06/2023 00221.0 0.41 ug/L1 1,1,1,2-Tetrachloroethane ND 01/06/2023 00221.0 0.40 ug/L1 1,1,2,2-Tetrachloroethane ND 01/06/2023 00221.0 0.40 ug/L1 Tetrachloroethene ND 01/06/2023 00221.0 0.40 ug/L1 Tetrahydrofuran ND 01/06/2023 00225.0 1.0 ug/L1 Toluene ND 01/06/2023 00221.0 0.40 ug/L1 1,1,1-Trichloroethane ND 01/06/2023 00221.0 0.40 ug/L1 1,1,2-Trichloroethane ND 01/06/2023 00221.0 0.40 ug/L1 Trichloroethene ND 01/06/2023 00221.0 0.40 ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 85 of 104 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64266-001 64266 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Trichlorofluoromethane ND 01/06/2023 00221.0 0.40 ug/L1 1,2,3-Trichloropropane ND 01/06/2023 00221.0 0.40 ug/L1 Vinyl acetate ND 01/06/2023 00225.0 1.2 ug/L1 Vinyl chloride ND 01/06/2023 00221.0 0.40 ug/L1 Xylenes (total)ND 01/06/2023 00221.0 0.40 ug/L1 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 105 70-130 1,2-Dichloroethane-d4 111 70-130 Toluene-d8 111 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 86 of 104 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64266-002 64266 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Acetone 190 01/05/2023 2141N18610060-1401 Acrylonitrile 99 01/05/2023 21419910070-1301 Benzene 46 01/05/2023 2141935070-1301 Bromochloromethane 46 01/05/2023 2141925070-1301 Bromodichloromethane 46 01/05/2023 2141915070-1301 Bromoform 44 01/05/2023 2141895070-1301 Bromomethane (Methyl bromide)53 01/05/2023 21411075070-1301 2-Butanone (MEK)140 01/05/2023 2141N13810070-1301 Carbon disulfide 49 01/05/2023 2141995070-1301 Carbon tetrachloride 46 01/05/2023 2141935070-1301 Chlorobenzene 48 01/05/2023 2141955070-1301 Chloroethane 48 01/05/2023 2141965070-1301 Chloroform 45 01/05/2023 2141915070-1301 Chloromethane (Methyl chloride)49 01/05/2023 2141985060-1401 1,2-Dibromo-3-chloropropane (DBCP)46 01/05/2023 2141935070-1301 Dibromochloromethane 45 01/05/2023 2141915070-1301 1,2-Dibromoethane (EDB)47 01/05/2023 2141955070-1301 Dibromomethane (Methylene bromide)49 01/05/2023 2141985070-1301 trans-1,4-Dichloro-2-butene 51 01/05/2023 21411015070-1301 1,2-Dichlorobenzene 50 01/05/2023 21411005070-1301 1,4-Dichlorobenzene 49 01/05/2023 2141995070-1301 1,1-Dichloroethane 49 01/05/2023 2141975070-1301 1,2-Dichloroethane 50 01/05/2023 21411005070-1301 1,1-Dichloroethene 45 01/05/2023 2141905070-1301 cis-1,2-Dichloroethene 48 01/05/2023 2141965070-1301 trans-1,2-Dichloroethene 48 01/05/2023 2141965070-1301 1,2-Dichloropropane 49 01/05/2023 2141985070-1301 cis-1,3-Dichloropropene 48 01/05/2023 2141965070-1301 trans-1,3-Dichloropropene 49 01/05/2023 2141975070-1301 1,4-Dioxane 870 01/05/2023 2141N17550060-1401 Ethylbenzene 49 01/05/2023 2141975070-1301 2-Hexanone 130 01/05/2023 2141N13410070-1301 Methyl iodide (Iodomethane)48 01/05/2023 2141975070-1301 4-Methyl-2-pentanone 100 01/05/2023 214110010070-1301 Methylene chloride 49 01/05/2023 2141985070-1301 Styrene 48 01/05/2023 2141965070-1301 1,1,1,2-Tetrachloroethane 47 01/05/2023 2141945070-1301 1,1,2,2-Tetrachloroethane 49 01/05/2023 2141985070-1301 Tetrachloroethene 46 01/05/2023 2141925070-1301 Tetrahydrofuran 55 01/05/2023 21411105070-1301 Toluene 48 01/05/2023 2141965070-1301 1,1,1-Trichloroethane 46 01/05/2023 2141915070-1301 1,1,2-Trichloroethane 48 01/05/2023 2141965070-1301 Trichloroethene 46 01/05/2023 2141915070-1301 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 87 of 104 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64266-002 64266 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Trichlorofluoromethane 52 01/05/2023 21411045070-1301 1,2,3-Trichloropropane 49 01/05/2023 2141995070-1301 Vinyl acetate 46 01/05/2023 2141915060-1401 Vinyl chloride 53 01/05/2023 21411065070-1301 Xylenes (total)94 01/05/2023 21419410070-1301 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 93 70-130 1,2-Dichloroethane-d4 90 70-130 Toluene-d8 94 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 88 of 104 Volatile Organic Compounds by GC/MS - LCSD Batch:Prep Method: Sample ID:YQ64266-003 64266 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD LimitDil(ug/L)(ug/L) Acetone 170 01/06/2023 0047N17210060-1407.5 201 Acrylonitrile 100 01/06/2023 004710510070-1305.1 201 Benzene 48 01/06/2023 0047965070-1303.2 201 Bromochloromethane 48 01/06/2023 0047965070-1304.2 201 Bromodichloromethane 46 01/06/2023 0047935070-1301.7 201 Bromoform 44 01/06/2023 0047885070-1300.93 201 Bromomethane (Methyl bromide)55 01/06/2023 00471105070-1303.4 201 2-Butanone (MEK)140 01/06/2023 0047N13810070-1300.38 201 Carbon disulfide 50 01/06/2023 00471015070-1302.1 201 Carbon tetrachloride 49 01/06/2023 0047975070-1304.7 201 Chlorobenzene 48 01/06/2023 0047965070-1300.90 201 Chloroethane 48 01/06/2023 0047965070-1300.65 201 Chloroform 47 01/06/2023 0047945070-1304.1 201 Chloromethane (Methyl chloride)49 01/06/2023 0047995060-1400.20 201 1,2-Dibromo-3-chloropropane (DBCP)44 01/06/2023 0047885070-1305.9 201 Dibromochloromethane 46 01/06/2023 0047925070-1300.91 201 1,2-Dibromoethane (EDB)48 01/06/2023 0047955070-1300.44 201 Dibromomethane (Methylene bromide)50 01/06/2023 00471015070-1303.4 201 trans-1,4-Dichloro-2-butene 40 01/06/2023 0047+8050 70-13024 201 1,2-Dichlorobenzene 48 01/06/2023 0047975070-1303.9 201 1,4-Dichlorobenzene 47 01/06/2023 0047955070-1304.4 201 1,1-Dichloroethane 51 01/06/2023 00471015070-1303.9 201 1,2-Dichloroethane 52 01/06/2023 00471045070-1303.2 201 1,1-Dichloroethene 47 01/06/2023 0047935070-1303.8 201 cis-1,2-Dichloroethene 49 01/06/2023 0047995070-1302.7 201 trans-1,2-Dichloroethene 50 01/06/2023 0047995070-1303.0 201 1,2-Dichloropropane 50 01/06/2023 00471005070-1301.8 201 cis-1,3-Dichloropropene 49 01/06/2023 0047985070-1301.4 201 trans-1,3-Dichloropropene 47 01/06/2023 0047955070-1302.4 201 1,4-Dioxane 790 01/06/2023 0047N15750060-14011 201 Ethylbenzene 48 01/06/2023 0047965070-1300.77 201 2-Hexanone 130 01/06/2023 0047N13110070-1302.1 201 Methyl iodide (Iodomethane)50 01/06/2023 00471005070-1303.3 201 4-Methyl-2-pentanone 100 01/06/2023 004710010070-1300.49 201 Methylene chloride 51 01/06/2023 00471025070-1304.0 201 Styrene 48 01/06/2023 0047965070-1300.51 201 1,1,1,2-Tetrachloroethane 47 01/06/2023 0047955070-1300.59 201 1,1,2,2-Tetrachloroethane 48 01/06/2023 0047955070-1302.8 201 Tetrachloroethene 47 01/06/2023 0047935070-1301.8 201 Tetrahydrofuran 54 01/06/2023 00471075070-1302.8 201 Toluene 49 01/06/2023 0047975070-1300.93 201 1,1,1-Trichloroethane 48 01/06/2023 0047965070-1305.0 201 1,1,2-Trichloroethane 48 01/06/2023 0047975070-1300.44 201 Trichloroethene 47 01/06/2023 0047945070-1303.5 201 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 89 of 104 Volatile Organic Compounds by GC/MS - LCSD Batch:Prep Method: Sample ID:YQ64266-003 64266 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD LimitDil(ug/L)(ug/L) Trichlorofluoromethane 52 01/06/2023 00471035070-1300.72 201 1,2,3-Trichloropropane 47 01/06/2023 0047945070-1305.6 201 Vinyl acetate 44 01/06/2023 0047875060-1404.9 201 Vinyl chloride 51 01/06/2023 00471025070-1303.0 201 Xylenes (total)93 01/06/2023 00479310070-1301.4 201 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 93 70-130 1,2-Dichloroethane-d4 93 70-130 Toluene-d8 93 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 90 of 104 Volatile Organic Compounds by GC/MS - MB Batch:Prep Method: Sample ID:YQ64454-001 64454 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Acetone ND 01/09/2023 1452205.0 ug/L1 2-Butanone (MEK)ND 01/09/2023 1452102.0 ug/L1 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 102 70-130 1,2-Dichloroethane-d4 102 70-130 Toluene-d8 107 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 91 of 104 Volatile Organic Compounds by GC/MS - LCS Batch:Prep Method: Sample ID:YQ64454-002 64454 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Acetone 83 01/09/2023 13118310060-1401 2-Butanone (MEK)91 01/09/2023 13119110070-1301 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 104 70-130 1,2-Dichloroethane-d4 97 70-130 Toluene-d8 102 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 92 of 104 Volatile Organic Compounds by GC/MS - MS Batch:Prep Method: Sample ID:XL31002-010MS 64454 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Acetone 700 01/09/2023 1903N35100060-14035010 2-Butanone (MEK)1400 01/09/2023 190373100070-13072010 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 110 70-130 1,2-Dichloroethane-d4 98 70-130 Toluene-d8 111 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 93 of 104 Volatile Organic Compounds by GC/MS - MSD Batch:Prep Method: Sample ID:XL31002-010MD 64454 5030B Analytical Method:8260D Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Acetone 700 01/09/2023 1926N35100060-1400.35 2035010 2-Butanone (MEK)1500 01/09/2023 192674100070-1300.64 2072010 Surrogate Q % Rec Acceptance Limit Bromofluorobenzene 103 70-130 1,2-Dichloroethane-d4 95 70-130 Toluene-d8 106 70-130 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 94 of 104 ICP-MS Metals - MB Batch:Prep Method: Prep Date: Sample ID:YQ63980-001 63980 3005A 01/03/2023 1530Analytical Method:6020B Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Antimony ND 01/05/2023 00182.0 0.50 ug/L1 Arsenic ND 01/05/2023 00182.0 1.3 ug/L1 Barium ND 01/05/2023 00185.0 1.3 ug/L1 Beryllium ND 01/05/2023 00180.40 0.15 ug/L1 Cadmium ND 01/05/2023 00180.50 0.13 ug/L1 Chromium ND 01/05/2023 00185.0 1.3 ug/L1 Cobalt ND 01/05/2023 00185.0 1.3 ug/L1 Copper ND 01/05/2023 00185.0 1.3 ug/L1 Lead ND 01/05/2023 00181.0 0.25 ug/L1 Nickel ND 01/05/2023 00185.0 1.3 ug/L1 Selenium ND 01/05/2023 00185.0 1.3 ug/L1 Silver ND 01/05/2023 00181.0 0.25 ug/L1 Thallium ND 01/05/2023 00180.50 0.15 ug/L1 Vanadium ND 01/05/2023 00185.0 2.5 ug/L1 Zinc ND 01/05/2023 0018102.5 ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 95 of 104 ICP-MS Metals - LCS Batch:Prep Method: Prep Date: Sample ID:YQ63980-002 63980 3005A 01/03/2023 1530Analytical Method:6020B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Antimony 96 01/05/2023 00289610080-1201 Arsenic 92 01/05/2023 00289210080-1201 Barium 92 01/05/2023 00289210080-1201 Beryllium 94 01/05/2023 00289410080-1201 Cadmium 110 01/05/2023 002810510080-1201 Chromium 98 01/05/2023 00289810080-1201 Cobalt 100 01/05/2023 002810110080-1201 Copper 100 01/05/2023 002810310080-1201 Lead 110 01/05/2023 002810510080-1201 Nickel 100 01/05/2023 002810010080-1201 Selenium 86 01/05/2023 00288610080-1201 Silver 92 01/05/2023 00289210080-1201 Thallium 110 01/05/2023 002810710080-1201 Vanadium 96 01/05/2023 00289610080-1201 Zinc 98 01/05/2023 00289810080-1201 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 96 of 104 ICP-MS Metals - MS Batch:Prep Method: Prep Date: Sample ID:XL31002-002MS 63980 3005A 01/03/2023 1530Analytical Method:6020B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Antimony 110 01/05/2023 021310610075-125ND1 Arsenic 100 01/05/2023 021310110075-125ND1 Barium 230 01/05/2023 021310310075-1251201 Beryllium 100 01/05/2023 02139910075-1250.19 1 Cadmium 110 01/05/2023 021311210075-1250.24 1 Chromium 100 01/05/2023 021310010075-125ND1 Cobalt 150 01/05/2023 02139810075-125491 Copper 100 01/05/2023 021310110075-1253.1 1 Lead 100 01/05/2023 021310510075-125ND1 Nickel 100 01/05/2023 02139910075-1252.7 1 Selenium 97 01/05/2023 02139710075-125ND1 Silver 94 01/05/2023 02139410075-125ND1 Thallium 100 01/05/2023 021310410075-1250.26 1 Vanadium 99 01/05/2023 02139910075-125ND1 Zinc 110 01/05/2023 021310910075-1254.2 1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 97 of 104 ICP-MS Metals - MSD Batch:Prep Method: Prep Date: Sample ID:XL31002-002MD 63980 3005A 01/03/2023 1530Analytical Method:6020B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(ug/L)(ug/L)(ug/L) Antimony 110 01/05/2023 022310610075-1250.0052 20ND1 Arsenic 100 01/05/2023 022310210075-1250.75 20ND1 Barium 230 01/05/2023 022310310075-1250.21 201201 Beryllium 100 01/05/2023 022310010075-1250.35 200.19 1 Cadmium 110 01/05/2023 022311110075-1250.60 200.24 1 Chromium 100 01/05/2023 022310010075-1250.27 20ND1 Cobalt 150 01/05/2023 02239910075-1250.68 20491 Copper 110 01/05/2023 022310210075-1250.97 203.1 1 Lead 100 01/05/2023 022310310075-1252.1 20ND1 Nickel 100 01/05/2023 02239910075-1250.42 202.7 1 Selenium 100 01/05/2023 022310010075-1252.3 20ND1 Silver 94 01/05/2023 02239410075-1250.40 20ND1 Thallium 100 01/05/2023 022310210075-1251.6 200.26 1 Vanadium 99 01/05/2023 02239910075-1250.015 20ND1 Zinc 110 01/05/2023 022310910075-1250.0027 204.2 1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 98 of 104 ICP-MS - MB Batch:Prep Method: Prep Date: Sample ID:YQ63980-001 63980 3005A 01/03/2023 1530Analytical Method:6020B Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Arsenic ND 01/05/2023 00182.0 1.3 ug/L1 Barium ND 01/05/2023 00185.0 1.3 ug/L1 Cadmium ND 01/05/2023 00180.50 0.13 ug/L1 Chromium ND 01/05/2023 00185.0 1.3 ug/L1 Lead ND 01/05/2023 00181.0 0.25 ug/L1 Selenium ND 01/05/2023 00185.0 1.3 ug/L1 Silver ND 01/05/2023 00181.0 0.25 ug/L1 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 99 of 104 ICP-MS - LCS Batch:Prep Method: Prep Date: Sample ID:YQ63980-002 63980 3005A 01/03/2023 1530Analytical Method:6020B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Arsenic 92 01/05/2023 00289210080-1201 Barium 92 01/05/2023 00289210080-1201 Cadmium 110 01/05/2023 002810510080-1201 Chromium 98 01/05/2023 00289810080-1201 Lead 110 01/05/2023 002810510080-1201 Selenium 86 01/05/2023 00288610080-1201 Silver 92 01/05/2023 00289210080-1201 Note:Calculations are performed before rounding to avoid round-off errors in calculated results LOQ = Limit of Quantitation ND = Not detected at or above the DL J = Estimated result < LOQ and > DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40% + = RPD is out of criteria _DL = Detection Limit * = RSD is out of criteria 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 100 of 104 Chain of Custody and Miscellaneous Documents 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 101 of 104 PACE ANALYTICAL SERVICES, LLC 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 102 of 104 PACE ANALYTICAL SERVICES, LLC 106 Vantage Point Drive West Columbia, SC 29172 (803) 791-9700 Fax (803) 791-9111 www.pacelabs.com Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) Page 103 of 104