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HomeMy WebLinkAbout3602_BiggerstaffLF_December2022GWMR_FID1830591_20240222 SECOND SEMI-ANNUAL 2022 GROUNDWATER AND SURFACE WATER MONITORING EVENT GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL BESSEMER CITY, NORTH CAROLINA PERMIT NO.: 36-02 Prepared for: Mr. Dan Ziehm, PE Gaston County Public Works P.O. Box 1578 Gastonia, North Carolina 28053 July 27, 2022 Prepared by: _____________________________ Ross Klingman, P.G. Senior Geologist SECOND SEMI-ANNUAL 2022 GROUNDWATER AND SURFACE WATER MONITORING EVENT GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL BESSEMER CITY, NORTH CAROLINA PERMIT NO.: 36-02 TABLE OF CONTENTS 1.0 Introduction 1 2.0 Background Information 2 3.0 Groundwater and Surface Water Monitoring Activities 3 4.0 Groundwater Flow Direction 4 5.0 Groundwater and Surface Water Analytical Results 5 6.0 Conclusions 6 7.0 Recommendations 7 LIST OF FIGURES 1. Site Location Map 2. Site Layout Map 3. Shallow Groundwater Flow 4. Groundwater Analytical Results LIST OF TABLES 1. Groundwater Gauging Data 2. Field Parameter Data 3. Groundwater Analytical Results 4. Surface Water Analytical Results APPENDICES A. NCSWS Correspondence – PFAS Monitoring Requirements – March 13, 2023 & July 17, 2023 B. Laboratory Data Sheets C. Historical Groundwater Analytical Results Page | 1 SECOND SEMI-ANNUAL 2022 GROUNDWATER AND SURFACE WATER MONITORING EVENT GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL BESSEMER CITY, NORTH CAROLINA PERMIT NO.: 36-02 1.0 INTRODUCTION Buxton Environmental, Inc. (BEI) respectfully submits the methods and results of the second semi-annual 2022 groundwater and surface water monitoring activities conducted at the Gaston County - Closed Biggerstaff Landfill (Permit No.: 36-02) located along Abel Drive in Bessemer City, North Carolina. The purpose for conducting the assessment was to monitor groundwater, surface water and hydrogeologic conditions at the subject site. A site location map and site layout map are provided in Figures 1 and 2, respectively. The groundwater monitoring activities were conducted in general accordance with current North Carolina Department of Environmental Quality, Division of Waste Management-Solid Waste Section (NCSWS) rules and guidelines; 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 North Carolina Groundwater Protection Standards (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 (VOCs) or EPA Method 8270 (semi-VOCs) utilizing the select ion monitoring (SIM) procedure, 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. 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 is the naturally occurring background concentration. For clarity purposes, the NCGPSs and 2L 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 method detection limit (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. 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 MDL for two (2) consecutive events. 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 for ,0601 and .0602 (all other landfills not regulated under .0531-0546 and .1600 rules); .0544 and .0545 (construction and demolition (C&D) landfills); and .1623, and .1630 - .1637 (Subtitle D lined municipal solid waste (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 Page | 2 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 (this site) 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 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. A summary of background information, and the methods, results, conclusions and recommendations of this investigation are outlined below. Page | 3 2.0 BACKGROUND INFORMATION Based on review of aerial photographs and discussions with Gaston County personnel, the subject facility was opened prior to 1968 and remained in operation until it closed in approximately 1986. The subject property consists of approximately 60 acres and currently contains a landing strip used by a local model airplane club. To comply with NCSWS guidelines, semi-annual groundwater monitoring was initiated in April 1997 at five shallow monitor wells MW-1 through MW-5. The groundwater samples have historically been analyzed for Appendix I volatile organic compounds (VOCs) and RCRA metals. Groundwater samples collected during these activities indicated several VOCs and metals above NCGPSs. Due to the presence of target constituents above the NCGPSs, the NCSWS requested that additional assessment be conducted to determine the extent of affected groundwater and the existence of surrounding water supply wells. According to a March 22, 2001 Site Assessment Activities for Biggerstaff Closed Landfill report prepared by Resolve Environmental Services, P.A., two deep monitor wells MW-2D and MW-4D were installed adjacent to monitor wells MW-2 and MW-4, respectively. Groundwater samples collected at MW-2D indicated the presence of 61 micrograms per liter (ug/l) cadmium and 150 ug/l lead, and MW-4D indicated the presence of 9 ug/l cadmium and 22 ug/l lead, which were above the NCGPSs. During the assessment, a total of 15 water supply wells were identified within a 0.5 mile radius of the former landfill. According to the report, these water supply wells were either located upgradient or across shallow groundwater divides. On February 7 and 8, 2018, Mr. Ross Klingman, P.G. with BEI 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 concrete pad); MW-2 (dirt and vegetation were removed from the concrete pad and a new hinge was installed on the stand-up cover lid); MW-3 (dirt and vegetation were removed from the concrete pad); MW-4 (dirt and vegetation were removed from the concrete pad); MW-4D (dirt and vegetation were removed from the concrete pad); and MW-5 (dirt and vegetation were removed from the concrete pad). 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 1. In accordance with the new NCSWS guidance regarding 1,4-dioxane (SIM) monitoring frequency, BEI recommended in the First Semi-Annual 2020 Groundwater and Surface Water Monitoring Event report dated September 11, 2020 that groundwater samples collected at monitor wells MW-2, MW-2D, MW-4, MW-4D and MW-5 would continue to be analyzed for 1,4-dioxane by EPA Method 8260D (SIM) until 1,4-dioxane has not been detected above the MDL for two (2) consecutive events. In addition, surface water samples Upstream and Downstream will continue to be analyzed for 1,4-dioxane by EPA 8260D (SIM) (have never indicated 1,4- dioxane above the MDL), in order to monitor on-site detections of 1,4-dioxane affected groundwater. All groundwater and surface water samples will 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. Page | 4 3.0 GROUNDWATER AND SURFACE WATER MONITORING ACTIVITIES On December 27, 2022, BEI conducted the second semi-annual 2022 groundwater and surface water monitoring event at the subject site. Groundwater monitoring activities were conducted at five shallow monitor wells including MW-1, MW-2, MW-3 and MW-4; and two deep monitor wells MW-2D and MW-4D. Groundwater sampling at monitor well MW-5 was unable to be conducted, due to limited water conditions. Monitor well MW-1 is an upgradient background well, and the remaining wells are downgradient compliance wells. Two surface water samples, Upstream and Downstream, were collected along the tributary creek located downgradient and to the south of the landfill area. Prior to conducting the sampling activities, groundwater levels were obtained from each well with a depth-to- water electrode to the nearest 0.01 foot. Following the gauging activities, each well was purged of three well bore volumes of water or until dryness with a disposable Teflon bailer attached to new nylon rope. Purge water was poured on the ground surface at respective well heads. Field parameters including pH, conductivity and temperature were collected following purging at each groundwater monitor well, and prior to sampling at each surface water sample location with a calibrated HANNA Groline HI 9814 meter. Groundwater gauging and field parameter data are provided in Tables 1 and 2, respectively. The groundwater and surface water samples were analyzed for Appendix I VOCs by EPA Method 8260D (plus 1,4-dioxane (non-SIM)) and 8 RCRA metals by EPA Methods 6020B and 7470A. Groundwater samples collected at monitor wells MW-2, MW-2D, MW-4 and MW-4D were also analyzed for 1,4-dioxane by EPA Method 8260D (SIM, to achieve the 3 ug/l LOQ/PQL/RL requirement), since 1,4-dioxane has been detected above the MDL for one or more of the past two (2) consecutive events. Surface water samples Upstream and Downstream were also analyzed for 1,4-dioxane by EPA 8260D (SIM) (have never indicated 1,4-dioxane above the MDL), in order to monitor on-site detections of 1,4-dioxane affected groundwater. The samples were analyzed by Pace Analytical Services, LLC (South Carolina License # 329) in West Columbia, South Carolina. 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. 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 | 5 4.0 GROUNDWATER FLOW DIRECTION Based on groundwater levels obtained on December 27, 2022 during the second semi-annual 2021 monitoring event, shallow groundwater flows south southeast towards tributary creeks located on the eastern and southern sides of the property. A shallow groundwater flow direction map is provided in Figure 3. A horizontal hydraulic gradient of 0.033 feet per feet (ft/ft) was observed between shallow monitor wells MW-1 and MW-3. An upward vertical hydraulic gradient of 0.032 ft/ft was observed at nested monitor wells MW-2 and MW-2D. A downward vertical hydraulic gradient of 0.009 ft/ft was observed at nested monitor wells MW- 4 and MW-4D. Upward vertical hydraulic gradients are generally associated with groundwater discharge zones and downward vertical hydraulic gradients were generally associated with groundwater recharge zones. Page | 6 5.0 GROUNDWATER AND SURFACE WATER ANALYTICAL RESULTS The groundwater and surface water analytical results for the second semi-annual 2022 event are presented in Tables 3 and 4, respectively, and are illustrated in Figure 4. Laboratory data sheets are presented in Appendix B. Historical groundwater analytical results are presented in Appendix C. Groundwater samples collected at monitor wells MW-1, MW-2 and MW-4D indicated the presence of target constituents above the NCGPSs, which are summarized below. Groundwater sample MW-1 indicated the presence of 1.9 ug/l benzene. Groundwater sample MW-2 indicated the presence of 4 ug/l benzene, 3 ug/l vinyl chloride and 8.1 ug/l 1,4-dioxane (SIM). Groundwater sample MW-4D indicated the presence of 1.3 ug/l benzene, 12 ug/l 1,4-dichlorobenzene, 71 ug/l 1,4-dioxane (non-SIM), 84 ug/l 1,4-dioxane (SIM) and 33 ug/l chromium. The remaining groundwater samples collected at MW-2D, MW-3 and MW-4 did not indicate target constituents above NCGPSs. Monitor wells MW-1 and MW-3, which had been removed from the 1,4-dioxane (SIM) monitoring schedule due to non-detects below MDLs for two (2) or more consecutive background monitoring events), did not indicate 1,4-dioxane (non-SIM) above the MDL during the second semi-annual 2022 sampling event. No target constituents were detected above NCGPSs for the first-time in any of the groundwater samples collected during the second semi-annual 2022 event, therefore, a 14-Day Notification of Groundwater Protection Standards Exceedance form is not required to be submitted to the NCSWS. Surface water samples, Upstream and Downstream, did not indicate the presence of target 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 Long Creek and Burton Branch Creek (Class C Water); 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, the surface water samples did not indicate 1,4- dioxane (non-SIM or SIM) above the MDL. Page | 7 6.0 CONCLUSIONS On December 27, 2022, BEI conducted the second semi-annual 2022 groundwater and surface water monitoring activities at the Gaston County - Closed Biggerstaff Landfill located in Bessemer City, North Carolina. A summary of the findings of this investigation is provided below. • 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 for ,0601 and .0602 (all other landfills not regulated under .0531-0546 and .1600 rules); .0544 and .0545 (construction and demolition (C&D) landfills); and .1623, and .1630 - .1637 (Subtitle D lined municipal solid waste (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 (this site) 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 and leachate); and reporting (routine report preparation and submittal, along with EDD requirements in the EQUIS format). • During the sampling event, all monitor wells were locked, appeared to be in good condition and in compliance with NCSWS standards. • Groundwater samples collected at monitor wells MW-1, MW-2 and MW-4D indicated the presence of target constituents above the NCGPSs. Groundwater sample MW-1 indicated the presence of 1.9 ug/l benzene. Groundwater sample MW-2 indicated the presence of 4 ug/l benzene, 3 ug/l vinyl chloride and 8.1 ug/l 1,4-dioxane (SIM). Groundwater sample MW-4D indicated the presence of 1.3 ug/l benzene, 12 ug/l 1,4-dichlorobenzene, 71 ug/l 1,4-dioxane (non-SIM), 84 ug/l 1,4-dioxane (SIM) and 33 ug/l chromium. The remaining groundwater samples collected at MW-2D, MW-3 and MW-4 did not indicate target constituents above NCGPSs. • Monitor wells MW-1 and MW-3, which had been removed from the 1,4-dioxane (SIM) monitoring schedule due to non-detects below MDLs for two (2) or more consecutive background monitoring events), did not indicate 1,4-dioxane (non-SIM) above the MDL during the second semi-annual 2022 sampling event. • No target constituents were detected above NCGPSs for the first-time in any of the groundwater samples collected during the second semi-annual 2022 event, therefore, a 14-Day Notification of Groundwater Protection Standards Exceedance form is not required to be submitted to the NCSWS. Page | 8 • Surface water samples, Upstream and Downstream, did not indicate the presence of target constituents above established NCSWWSs. In addition, the surface water samples did not indicate 1,4-dioxane (non- SIM or SIM) above the MDL. Page | 9 7.0 RECOMMENDATIONS Based on the findings of this assessment, Buxton Environmental, Inc. makes the following recommendations. • Semi-annual groundwater and surface water monitoring, including Appendix I VOCs, RCRA metals and 1,4-dioxane (non-SIM/SIM) analysis, should continue to be conducted at the Closed Biggerstaff Landfill. In addition, groundwater and surface water samples should be analyzed for PFAS compounds by EPA (Draft) Method 1633 by a DOD accredited laboratory for the next two (2) semi-annual monitoring events, in accordance with the March 13 and July 17, 2023 memorandums issued by the NCSWS. The next semi- annual sampling event is anticipated to be conducted in August 2023. • Groundwater samples collected at monitor wells MW-2, MW-2D, MW-4 and MW-4D will continue to be analyzed for 1,4-dioxane by EPA Method 8260D (SIM) until 1,4-dioxane has not been detected above the MDL for two (2) consecutive events. In addition, surface water samples Upstream and Downstream will continue to be analyzed for 1,4-dioxane by EPA 8260D (SIM) (have never indicated 1,4-dioxane above the MDL), in order to monitor on-site detections of 1,4-dioxane affected groundwater. Monitor wells MW-1, MW-3 and MW-5 (new deletion) should continue to be removed from the 1,4-dioxane (SIM) sampling schedule, due to two (2) or more consecutive non-detections. All groundwater and surface water samples will 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. • A copy of this report should be forwarded to the NCSWS for their review. rk:reports:biggerstaffrpt.1222 FIGURES TABLES TABLE 1 GROUNDWATER GAUGING DATA GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL (PERMIT NO.: 36-02) BESSEMER CITY, NORTH CAROLINA DECEMBER 27, 2022 Well ID Latitude Longitude Drilling Install TD TD Screen Sand Bentonite Grout TOC DTW DTW (degrees)(degrees)Company Date BTOC (ft)BGS (ft)Depth BGS (ft)BGS (ft)BGS (ft)BGS (ft)Elevation (ft)BTOC (ft)Elevation (ft) MW-1 35.337862 -81.289508 Atec 7/9/93 33.20 30 10-30 8.5-30 6-8.5 0-6 872.88 31.56 841.32 MW-2 35.335467 -81.289481 Atec 7/8/93 18.00 15 5-15 4-15 2-4 0-2 811.01 10.22 800.79 MW-2D 35.335419 -81.289636 Geologic Ex.8/18/00 45.00 42 32-42 ------812.48 10.88 801.60 MW-3 35.332265 -81.291042 Atec 7/8/93 18.10 15 5-15 4-15 2-4 0-2 781.76 8.00 773.76 MW-4 35.332294 -81.291088 Atec 7/8/93 18.50 15 5-15 4-15 2-4 0-2 786.22 8.85 777.37 MW-4D 35.332209 -81.291112 Geologic Ex.8/18/00 45.00 42 32-42 30-42 28-30 0-28 784.55 7.43 777.12 MW-5 35.334204 -81.291591 Atec 2/17/94 33.20 30 15-30 8.5-30 6-8.5 0-6 825.72 33.33 792.39 Notes: Depth-to-water measurements collected on December 27, 2022 with a depth-to-water electrode. TD=total depth;BTOC=below top of casing;TOC=top of casing;DTW=depth to water;ft=feet TOC elevations at MW-1, MW-2, MW-3, MW-4 and MW-5 are relative to mean sea level and were surveyed by Robinson & Sawyer, Inc. on August 5, 1993. Latitude and longitude determined on February 7 & 8, 2018 with My GPS Coordinates app. TABLE 2 FIELD PARAMETER DATA GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL (PERMIT NO.: 36-02) BESSEMER CITY, NORTH CAROLINA DECEMBER 27, 2022 Well ID Field Parameters pH (standard units)K (uS/cm)T (Celsius) MW-1 5.50 200 14.4 MW-2 6.05 90 13.2 MW-2D 4.99 50 13.2 MW-3 5.56 70 12.2 MW-4 6.01 230 13.8 MW-4D 5.96 1,360 13.3 MW-5 dry dry dry Upstream 5.80 120 8.9 Downstream 5.50 120 8.1 Notes: Field parameters collected on December 27, 2022 by Buxton Environmental, Inc. utilizing a calibrated HANNA Groline-HI 9814 meter. Field parameters at monitor wells collected after purging 3 well volumes of water or until dryness with a disposable PVC bailer and new nylon string. SU = standard units uS/cm = microsiemens per centimeter K = conductivity; T = temperature "--" = limited water TABLE 3 GROUNDWATER ANALYTICAL RESULTS GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL (PERMIT NO.: 36-02) BESSEMER CITY, NORTH CAROLINA DECEMBER 27, 2022 Sample ID LOQ MDL MW-1 MW-2 MW-2D MW-3 MW-4 MW-4D MW-5 NCGPS Appendix I VOCs (EPA 8260D) Acetone 20 5 BDL BDL BDL BDL BDL BDL NT*6,000 Benzene 1 0.4 1.9 4 BDL BDL 0.5J 1.3 NT*1 Chlorobenzene 1 0.4 0.91J 1.2 BDL BDL BDL 17 NT*50 1,2-Dichlorobenzene 1 0.4 0.63J BDL BDL BDL BDL 1.5 NT*20 1,4-Dichlorobenzene 1 0.4 3.3 5.3 BDL BDL 0.43J 12 NT*6 1,1-Dichloroethane 1 0.4 BDL BDL BDL BDL BDL 1.4 NT*6 cis-1,2-Dichloroethene 1 0.4 2.3 27 0.63J BDL BDL 11 NT*70 1,2-Dichloropropane 1 0.4 BDL BDL BDL BDL BDL 0.45J NT*1 1,4-Dioxane 50 13 BDL BDL BDL BDL BDL 71 NT*3 Methylene Chloride 1 0.4 0.66J 1.1 BDL BDL BDL BDL NT*5 Tetrachloroethene 1 0.4 0.45J 0.52J BDL BDL BDL BDL NT*0.7 Trichloroethene 1 0.4 0.46J 0.77J BDL BDL BDL 0.73J NT*3 Vinyl Chloride 1 0.4 BDL 3 BDL BDL BDL 3.9 NT*0.03 Xylenes 1 0.4 6.9 6.3 BDL BDL BDL BDL NT*500 EPA 8260D (SIM) 1,4-Dioxane 3 1 NT 8.1 1.1J NT BDL 84 NT*3 RCRA Metals (EPA 6020B & 7470A) Arsenic 2 1.3 BDL BDL BDL BDL 5 8.1 NT*10 Barium 5 1.3 25 88 39 16 7.1 200 NT*700 Cadmium 0.5 0.13 BDL BDL 1.5 0.14J 0.5 33 NT*2 Chromium 5 1.3 BDL BDL BDL 1.5J 2.6J BDL NT*10 Lead 1 0.25 BDL 0.41J 1.4 0.71J BDL 3 NT*15 Selenium 5 1.3 BDL 4J BDL BDL BDL 13 NT*20 Mercury 0.2 0.09 BDL BDL BDL BDL BDL BDL NT*1 Notes: Groundwater samples collected on December 27, 2022 and analyzed for Appendix I volatile organic compounds (VOCs) by EPA Method 8260D (plus 1,4-dioxane (non-SIM)) and RCRA metals by EPA Methods 6020B and 7470A. Samples collected at MW-2, MW-2D, MW-4 and MW-4D also analyzed for 1,4-dioxane by EPA Method 8260D (SIM). Analyses by Pace Analytical Services, LLC. (NC Certification No.: 329) in West Columbia, SC. Groundwater sample collected after purging 3 well volumes of water or until dryness with a disposable PVC bailer and new nylon string. NCGPS=North Carolina Groundwater Protection Standard (April 11, 2022) 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 BDL = Below Detection Limit Bold and shade denotes groundwater sample above established NCGPS (J-flagged data not considered). 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). H = analyzed out of holding time NT* = not tested due to dry conditions TABLE 4 SURFACE WATER ANALYTICAL RESULTS GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL (PERMIT NO.: 36-02) BESSEMER CITY, NORTH CAROLINA DECEMBER 27, 2022 Sample ID LOQ MDL Upstream Downstream NCSWWS Appendix I VOCs cis-1,2-Dichloroethene 1 0.4 0.42J BDL 60 (NCTSW) Trichloroethene 1 0.4 1.3 0.82J 2.5 (NC2BRB) EPA 8260D (SIM) 1,4-Dioxane 3 0.52 BDL BDL 0.35 (NCTSW) RCRA Metals Barium 5 1.3 11 12 1,000 (NC2B) Chromium 5 1.3 BDL 1.7J 50 (NC2B) Lead 1 0.25 BDL 0.25J 25 (NC2B) Notes: Surface water samples collected on December 27, 2022 and analyzed for Appendix I volatile organic compounds (VOCs) by EPA Method 8260D; 1-4-Dioxane by EPA Method 8260D (select ion monitoring (SIM)); and RCRA metals by EPA 6020B and 7470A. Analyses by Pace Analytical Services, LLC (NC Certification No.: 329) in West Columbia, SC. 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 BDL = Below Detection Limit 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 Long Creek (Class WS-II Water); or EPA National Recommended Water Quality Criteria for Aquatic Life and Human Health (EPAWQC). Criteria. VOCs = volatile organic compounds data presented in micrograms per liter (ug/l) J = estimated result <LOQ and >=MDL B = detected in method blank NA = not applicable bold and shade denotes above established NCSWWS (J-flagged data not considered since estimated) APPENDIX A. NCSWS CORRESPONDENCE PFAS MONITORING REQUIREMENTS MARCH 13, 2023 & July 17, 2023 APPENDIX B 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 Co -Biggerstaff Landfill Project Number:NC Permit Lot Number:XL28040 Date Completed:01/08/2023 01/13/2023 12:56 AM Approved and released by: Project Manager II:Cathy S.Dover Page 1 of 56 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:XL28040 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 continuing calibration verification (CCV)associated with analytical batch 64265 recovered outside acceptance criteria,low biased,for Vinyl acetate (-25%)and 1,4-Dioxane (-37%).An LOQ standard was analyzed,and the target analyte was detected.Since the associated samples were non-detect,no corrective action was taken. XL28040-001 (MW-1)(Run 1)(Analysis Batch 64265) XL28040-002 (MW-2)(Run 1)(Analysis Batch 64265) XL28040-003 (MW-2D)(Run 1)(Analysis Batch 64265) XL28040-004 (MW-3)(Run 1)(Analysis Batch 64265) XL28040-005 (MW-4)(Run 1)(Analysis Batch 64265) XL28040-006 (MW-4D)(Run 1)(Analysis Batch 64265) XL28040-007 (UPSTREAM)(Run 1)(Analysis Batch 64265) XL28040-008 (DOWNSTREAM)(Run 1)(Analysis Batch 64265) 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. XL28040-001 (MW-1)(Run 1)(Analysis Batch 64265) XL28040-002 (MW-2)(Run 1)(Analysis Batch 64265) XL28040-003 (MW-2D)(Run 1)(Analysis Batch 64265) XL28040-004 (MW-3)(Run 1)(Analysis Batch 64265) XL28040-005 (MW-4)(Run 1)(Analysis Batch 64265) Page 2 of 56 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 XL28040-006 (MW-4D)(Run 1)(Analysis Batch 64265) XL28040-007 (UPSTREAM)(Run 1)(Analysis Batch 64265) XL28040-008 (DOWNSTREAM)(Run 1)(Analysis Batch 64265) If you have any questions regarding this report,please contact the Pace Project Manager listed on the cover page. Page 3 of 56 PACE ANALYTICAL SERVICES, LLC Sample Summary Buxton Environmental Lot Number: XL28040 Project Name: Gaston Co - Biggerstaff Landfill Project Number: NC Permit: 3602 Sample Number Sample ID Matrix Date Sampled Date Received 001 12/27/2022 1200MW-1 Aqueous 12/28/2022 002 12/27/2022 1230MW-2 Aqueous 12/28/2022 003 12/27/2022 1300MW-2D Aqueous 12/28/2022 004 12/27/2022 1430MW-3 Aqueous 12/28/2022 005 12/27/2022 1330MW-4 Aqueous 12/28/2022 006 12/27/2022 1400MW-4D Aqueous 12/28/2022 007 12/27/2022 1500UPSTREAMAqueous 12/28/2022 008 12/27/2022 1530DOWNSTREAMAqueous 12/28/2022 (8 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 4 of 56 PACE ANALYTICAL SERVICES, LLC Detection Summary Buxton Environmental Lot Number: XL28040 Project Name: Gaston Co - Biggerstaff Landfill Project Number: NC Permit: 3602 Sample Sample ID Matrix Parameter Method Result Q Units Page 001 MW-1 Aqueous Benzene 8260D 1.9 ug/L 7 001 MW-1 Aqueous Chlorobenzene 8260D 0.91 J ug/L 7 001 MW-1 Aqueous 1,2-Dichlorobenzene 8260D 0.63 J ug/L 7 001 MW-1 Aqueous 1,4-Dichlorobenzene 8260D 3.3 ug/L 7 001 MW-1 Aqueous cis-1,2-Dichloroethene 8260D 2.3 ug/L 7 001 MW-1 Aqueous Methylene chloride 8260D 0.66 J ug/L 7 001 MW-1 Aqueous Tetrachloroethene 8260D 0.45 J ug/L 7 001 MW-1 Aqueous Trichloroethene 8260D 0.46 J ug/L 7 001 MW-1 Aqueous Xylenes (total)8260D 6.9 ug/L 8 001 MW-1 Aqueous Barium 6020B 25 ug/L 9 002 MW-2 Aqueous Benzene 8260D 4.0 ug/L 10 002 MW-2 Aqueous Chlorobenzene 8260D 1.2 ug/L 10 002 MW-2 Aqueous 1,4-Dichlorobenzene 8260D 5.3 ug/L 10 002 MW-2 Aqueous 1,1-Dichloroethane 8260D 1.9 ug/L 10 002 MW-2 Aqueous cis-1,2-Dichloroethene 8260D 27 ug/L 10 002 MW-2 Aqueous Methylene chloride 8260D 1.1 ug/L 10 002 MW-2 Aqueous Tetrachloroethene 8260D 0.52 J ug/L 10 002 MW-2 Aqueous Trichloroethene 8260D 0.77 J ug/L 10 002 MW-2 Aqueous Vinyl chloride 8260D 3.0 ug/L 11 002 MW-2 Aqueous Xylenes (total)8260D 6.3 ug/L 11 002 MW-2 Aqueous 1,4-Dioxane 8260D (SIM)8.1 ug/L 12 002 MW-2 Aqueous Barium 6020B 88 ug/L 13 002 MW-2 Aqueous Lead 6020B 0.41 J ug/L 13 002 MW-2 Aqueous Selenium 6020B 4.0 J ug/L 13 003 MW-2D Aqueous cis-1,2-Dichloroethene 8260D 0.63 J ug/L 14 003 MW-2D Aqueous 1,4-Dioxane 8260D (SIM)1.1 J ug/L 16 003 MW-2D Aqueous Barium 6020B 39 ug/L 17 003 MW-2D Aqueous Cadmium 6020B 1.5 ug/L 17 003 MW-2D Aqueous Lead 6020B 1.4 ug/L 17 004 MW-3 Aqueous Barium 6020B 16 ug/L 20 004 MW-3 Aqueous Cadmium 6020B 0.14 J ug/L 20 004 MW-3 Aqueous Chromium 6020B 1.5 J ug/L 20 004 MW-3 Aqueous Lead 6020B 0.71 J ug/L 20 005 MW-4 Aqueous Chlorobenzene 8260D 0.50 J ug/L 21 005 MW-4 Aqueous 1,4-Dichlorobenzene 8260D 0.43 J ug/L 21 005 MW-4 Aqueous Arsenic 6020B 5.0 ug/L 24 005 MW-4 Aqueous Barium 6020B 7.1 ug/L 24 005 MW-4 Aqueous Cadmium 6020B 0.50 ug/L 24 005 MW-4 Aqueous Chromium 6020B 2.6 J ug/L 24 006 MW-4D Aqueous Benzene 8260D 1.3 ug/L 25 006 MW-4D Aqueous Chlorobenzene 8260D 17 ug/L 25 006 MW-4D Aqueous 1,2-Dichlorobenzene 8260D 1.5 ug/L 25 006 MW-4D Aqueous 1,4-Dichlorobenzene 8260D 12 ug/L 25 106 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 56 Detection Summary (Continued) Lot Number: XL28040 Sample Sample ID Matrix Parameter Method Result Q Units Page 006 MW-4D Aqueous 1,1-Dichloroethane 8260D 1.4 ug/L 25 006 MW-4D Aqueous cis-1,2-Dichloroethene 8260D 11 ug/L 25 006 MW-4D Aqueous 1,2-Dichloropropane 8260D 0.45 J ug/L 25 006 MW-4D Aqueous 1,4-Dioxane 8260D 71 ug/L 25 006 MW-4D Aqueous Trichloroethene 8260D 0.73 J ug/L 25 006 MW-4D Aqueous Vinyl chloride 8260D 3.9 ug/L 26 006 MW-4D Aqueous 1,4-Dioxane 8260D (SIM)84 ug/L 27 006 MW-4D Aqueous Arsenic 6020B 8.1 ug/L 28 006 MW-4D Aqueous Barium 6020B 200 ug/L 28 006 MW-4D Aqueous Cadmium 6020B 33 ug/L 28 006 MW-4D Aqueous Lead 6020B 3.0 ug/L 28 006 MW-4D Aqueous Selenium 6020B 13 ug/L 28 007 UPSTREAM Aqueous cis-1,2-Dichloroethene 8260D 0.42 J ug/L 29 007 UPSTREAM Aqueous Trichloroethene 8260D 1.3 ug/L 29 007 UPSTREAM Aqueous Barium 6020B 11 ug/L 32 008 DOWNSTREAM Aqueous Trichloroethene 8260D 0.82 J ug/L 33 008 DOWNSTREAM Aqueous Barium 6020B 12 ug/L 36 008 DOWNSTREAM Aqueous Chromium 6020B 1.7 J ug/L 36 008 DOWNSTREAM Aqueous Lead 6020B 0.25 J ug/L 36 (62 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 6 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-1 XL28040-001 12/27/2022 1200 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0231 JMM2 64265 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D 1.9 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 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 0.91 J 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 0.63 J 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D 3.3 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 2.3 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 1ug/L1350 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 0.66 J 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 0.45 J 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 0.46 J 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 7 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-1 XL28040-001 12/27/2022 1200 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0231 JMM2 64265 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 6.9 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 95 70-130 1,2-Dichloroethane-d4 98 70-130 Toluene-d8 98 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 8 of 56 ICP-MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-1 XL28040-001 12/27/2022 1200 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 7470A 1 12/29/2022 1256 JAB2 12/29/2022 0950 63783 1 3005A 6020B 1 01/04/2023 1833 BNW 01/03/2023 1029 63790 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 25 1ug/L1.35.0 Cadmium 7440-43-9 6020B ND 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Lead 7439-92-1 6020B ND 1ug/L0.251.0 Mercury 7439-97-6 7470A ND 1mg/L0.0000910.00020 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 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 9 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-2 XL28040-002 12/27/2022 1230 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0256 JMM2 64265 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D 4.0 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 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 1.2 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 5.3 1ug/L0.401.0 1,1-Dichloroethane 75-34-3 8260D 1.9 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 27 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 1ug/L1350 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 1.1 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 0.52 J 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 0.77 J 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 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-2 XL28040-002 12/27/2022 1230 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0256 JMM2 64265 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 3.0 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D 6.3 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 94 70-130 1,2-Dichloroethane-d4 96 70-130 Toluene-d8 97 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 56 Volatile Organic Compounds by GC/MS (SIM) Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-2 XL28040-002 12/27/2022 1230 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D (SIM)1 01/04/2023 1614 BLM 64133 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL 1,4-Dioxane 123-91-1 8260D (SIM)8.1 1ug/L1.03.0 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 95 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 56 ICP-MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-2 XL28040-002 12/27/2022 1230 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 7470A 1 12/29/2022 1304 JAB2 12/29/2022 0950 63783 1 3005A 6020B 1 01/04/2023 1843 BNW 01/03/2023 1029 63790 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 88 1ug/L1.35.0 Cadmium 7440-43-9 6020B ND 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Lead 7439-92-1 6020B 0.41 J 1ug/L0.251.0 Mercury 7439-97-6 7470A ND 1mg/L0.0000910.00020 Selenium 7782-49-2 6020B 4.0 J 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 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 13 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-2D XL28040-003 12/27/2022 1300 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0322 JMM2 64265 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND 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 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 0.63 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 1,4-Dioxane 123-91-1 8260D ND 1ug/L1350 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 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 14 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-2D XL28040-003 12/27/2022 1300 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0322 JMM2 64265 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 93 70-130 1,2-Dichloroethane-d4 93 70-130 Toluene-d8 96 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 15 of 56 Volatile Organic Compounds by GC/MS (SIM) Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-2D XL28040-003 12/27/2022 1300 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D (SIM)1 01/04/2023 1638 BLM 64133 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL 1,4-Dioxane 123-91-1 8260D (SIM)1.1 J 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 16 of 56 ICP-MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-2D XL28040-003 12/27/2022 1300 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 7470A 1 12/29/2022 1307 JAB2 12/29/2022 0950 63783 1 3005A 6020B 1 01/04/2023 1854 BNW 01/03/2023 1029 63790 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 39 1ug/L1.35.0 Cadmium 7440-43-9 6020B 1.5 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Lead 7439-92-1 6020B 1.4 1ug/L0.251.0 Mercury 7439-97-6 7470A ND 1mg/L0.0000910.00020 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 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 17 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-3 XL28040-004 12/27/2022 1430 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0347 JMM2 64265 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND 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 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 1ug/L1350 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 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 18 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-3 XL28040-004 12/27/2022 1430 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0347 JMM2 64265 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 94 70-130 1,2-Dichloroethane-d4 95 70-130 Toluene-d8 98 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 19 of 56 ICP-MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-3 XL28040-004 12/27/2022 1430 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 7470A 1 12/29/2022 1309 JAB2 12/29/2022 0950 63783 1 3005A 6020B 1 01/04/2023 1904 BNW 01/03/2023 1029 63790 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 16 1ug/L1.35.0 Cadmium 7440-43-9 6020B 0.14 J 1ug/L0.130.50 Chromium 7440-47-3 6020B 1.5 J 1ug/L1.35.0 Lead 7439-92-1 6020B 0.71 J 1ug/L0.251.0 Mercury 7439-97-6 7470A ND 1mg/L0.0000910.00020 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 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 20 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-4 XL28040-005 12/27/2022 1330 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0413 JMM2 64265 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND 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 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 0.50 J 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 0.43 J 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 1ug/L1350 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 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 21 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-4 XL28040-005 12/27/2022 1330 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0413 JMM2 64265 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 93 70-130 1,2-Dichloroethane-d4 93 70-130 Toluene-d8 97 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 22 of 56 Volatile Organic Compounds by GC/MS (SIM) Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-4 XL28040-005 12/27/2022 1330 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D (SIM)1 01/04/2023 1703 BLM 64133 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 95 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 23 of 56 ICP-MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-4 XL28040-005 12/27/2022 1330 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 7470A 1 12/29/2022 1312 JAB2 12/29/2022 0950 63783 1 3005A 6020B 1 01/04/2023 1914 BNW 01/03/2023 1029 63790 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Arsenic 7440-38-2 6020B 5.0 1ug/L1.32.0 Barium 7440-39-3 6020B 7.1 1ug/L1.35.0 Cadmium 7440-43-9 6020B 0.50 1ug/L0.130.50 Chromium 7440-47-3 6020B 2.6 J 1ug/L1.35.0 Lead 7439-92-1 6020B ND 1ug/L0.251.0 Mercury 7439-97-6 7470A ND 1mg/L0.0000910.00020 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 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 24 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-4D XL28040-006 12/27/2022 1400 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0439 JMM2 64265 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND 1ug/L5.020 Acrylonitrile 107-13-1 8260D ND 1ug/L0.8020 Benzene 71-43-2 8260D 1.3 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 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 17 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 1.5 1ug/L0.401.0 1,4-Dichlorobenzene 106-46-7 8260D 12 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 11 1ug/L0.401.0 trans-1,2-Dichloroethene 156-60-5 8260D ND 1ug/L0.401.0 1,2-Dichloropropane 78-87-5 8260D 0.45 J 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 71 1ug/L1350 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 0.73 J 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 25 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-4D XL28040-006 12/27/2022 1400 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0439 JMM2 64265 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 3.9 1ug/L0.401.0 Xylenes (total)1330-20-7 8260D ND 1ug/L0.401.0 AcceptanceRun 1 Surrogate Q % Recovery Limits Bromofluorobenzene 94 70-130 1,2-Dichloroethane-d4 95 70-130 Toluene-d8 96 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 26 of 56 Volatile Organic Compounds by GC/MS (SIM) Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-4D XL28040-006 12/27/2022 1400 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D (SIM)1 01/04/2023 1727 BLM 64133 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL 1,4-Dioxane 123-91-1 8260D (SIM)84 1ug/L1.03.0 AcceptanceRun 1 Surrogate Q % Recovery Limits 1,2-Dichloroethane-d4 94 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 27 of 56 ICP-MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental MW-4D XL28040-006 12/27/2022 1400 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 7470A 1 12/29/2022 1320 JAB2 12/29/2022 0950 63783 1 3005A 6020B 1 01/04/2023 1925 BNW 01/03/2023 1029 63790 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Arsenic 7440-38-2 6020B 8.1 1ug/L1.32.0 Barium 7440-39-3 6020B 200 1ug/L1.35.0 Cadmium 7440-43-9 6020B 33 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Lead 7439-92-1 6020B 3.0 1ug/L0.251.0 Mercury 7439-97-6 7470A ND 1mg/L0.0000910.00020 Selenium 7782-49-2 6020B 13 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 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 28 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental UPSTREAM XL28040-007 12/27/2022 1500 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0504 JMM2 64265 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND 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 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 0.42 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 1,4-Dioxane 123-91-1 8260D ND 1ug/L1350 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 1.3 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 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental UPSTREAM XL28040-007 12/27/2022 1500 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0504 JMM2 64265 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 91 70-130 1,2-Dichloroethane-d4 91 70-130 Toluene-d8 95 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 56 Volatile Organic Compounds by GC/MS (SIM) Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental UPSTREAM XL28040-007 12/27/2022 1500 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D (SIM)1 01/04/2023 1752 BLM 64133 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 87 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 56 ICP-MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental UPSTREAM XL28040-007 12/27/2022 1500 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 7470A 1 12/29/2022 1323 JAB2 12/29/2022 0950 63783 1 3005A 6020B 1 01/04/2023 1935 BNW 01/03/2023 1029 63790 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 11 1ug/L1.35.0 Cadmium 7440-43-9 6020B ND 1ug/L0.130.50 Chromium 7440-47-3 6020B ND 1ug/L1.35.0 Lead 7439-92-1 6020B ND 1ug/L0.251.0 Mercury 7439-97-6 7470A ND 1mg/L0.0000910.00020 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 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 32 of 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental DOWNSTREAM XL28040-008 12/27/2022 1530 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0529 JMM2 64265 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Acetone 67-64-1 8260D ND 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 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 1ug/L1350 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 0.82 J 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 56 Volatile Organic Compounds by GC/MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental DOWNSTREAM XL28040-008 12/27/2022 1530 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D 1 01/06/2023 0529 JMM2 64265 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 91 70-130 1,2-Dichloroethane-d4 93 70-130 Toluene-d8 95 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 56 Volatile Organic Compounds by GC/MS (SIM) Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental DOWNSTREAM XL28040-008 12/27/2022 1530 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 5030B 8260D (SIM)1 01/04/2023 1816 BLM 64133 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 94 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 56 ICP-MS Description:Matrix: Date Received: Client:Laboratory ID: Date Sampled: Buxton Environmental DOWNSTREAM XL28040-008 12/27/2022 1530 12/28/2022 Aqueous Project Name: Gaston Co - Biggerstaff Project Number: NC Permit: 3602 Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch 1 7470A 1 12/29/2022 1326 JAB2 12/29/2022 0950 63783 1 3005A 6020B 1 01/04/2023 2028 BNW 01/03/2023 1029 63790 AnalyticalCAS Parameter Number Method Result Q LOQ Units Run DL Arsenic 7440-38-2 6020B ND 1ug/L1.32.0 Barium 7440-39-3 6020B 12 1ug/L1.35.0 Cadmium 7440-43-9 6020B ND 1ug/L0.130.50 Chromium 7440-47-3 6020B 1.7 J 1ug/L1.35.0 Lead 7439-92-1 6020B 0.25 J 1ug/L0.251.0 Mercury 7439-97-6 7470A ND 1mg/L0.0000910.00020 Selenium 7782-49-2 6020B ND 1ug/L1.35.0 Silver 7440-22-4 6020B ND 1ug/L0.251.0 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 36 of 56 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 37 of 56 Volatile Organic Compounds by GC/MS (SIM) - MB Batch:Prep Method: Sample ID:YQ64133-001 64133 5030B Analytical Method:8260D (SIM) Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil 1,4-Dioxane ND 01/04/2023 14113.0 1.0 ug/L1 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 95 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 38 of 56 Volatile Organic Compounds by GC/MS (SIM) - LCS Batch:Prep Method: Sample ID:YQ64133-002 64133 5030B Analytical Method:8260D (SIM) Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) 1,4-Dioxane 48 01/04/2023 1257975070-1301 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 106 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 39 of 56 Volatile Organic Compounds by GC/MS (SIM) - Duplicate Batch:Prep Method: Sample ID:XL28040-002DU 64133 5030B Analytical Method:8260D (SIM) Matrix:Aqueous Parameter Result Q Analysis Date% RPD %RPD Limit Sample Amount Dil(ug/L)(ug/L) 1,4-Dioxane 8.0 01/04/2023 21110.18 208.1 1 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 40 of 56 Volatile Organic Compounds by GC/MS (SIM) - MS Batch:Prep Method: Sample ID:XL28040-003MS 64133 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 45 01/04/2023 2135875070-1301.1 1 Surrogate Q % Rec Acceptance Limit 1,2-Dichloroethane-d4 103 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 41 of 56 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 42 of 56 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 43 of 56 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 44 of 56 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 45 of 56 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 46 of 56 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 47 of 56 ICP-MS - MB Batch:Prep Method: Prep Date: Sample ID:XQ63790-001 63790 3005A 01/03/2023 1029Analytical Method:6020B Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Arsenic ND 01/04/2023 18122.0 1.3 ug/L1 Barium ND 01/04/2023 18125.0 1.3 ug/L1 Cadmium ND 01/04/2023 18120.50 0.13 ug/L1 Chromium ND 01/04/2023 18125.0 1.3 ug/L1 Lead ND 01/04/2023 18121.0 0.25 ug/L1 Selenium ND 01/04/2023 18125.0 1.3 ug/L1 Silver ND 01/04/2023 18121.0 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 48 of 56 ICP-MS - LCS Batch:Prep Method: Prep Date: Sample ID:XQ63790-002 63790 3005A 01/03/2023 1029Analytical Method:6020B Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(ug/L)(ug/L) Arsenic 91 01/04/2023 18229110080-1201 Barium 92 01/04/2023 18229210080-1201 Cadmium 100 01/04/2023 182210310080-1201 Chromium 100 01/04/2023 182210010080-1201 Lead 110 01/04/2023 182210710080-1201 Selenium 88 01/04/2023 18228810080-1201 Silver 95 01/04/2023 18229510080-1201 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 49 of 56 ICP-MS - MB Batch:Prep Method: Prep Date: Sample ID:XQ63783-001 63783 12/29/2022 0950Analytical Method:7470A Matrix:Aqueous Parameter Result Q LOQ DL Units Analysis DateDil Mercury ND 12/29/2022 12510.00020 0.000091 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 50 of 56 ICP-MS - LCS Batch:Prep Method: Prep Date: Sample ID:XQ63783-002 63783 12/29/2022 0950Analytical Method:7470A Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec LimitDil(mg/L)(mg/L) Mercury 0.0019 12/29/2022 1253970.0020 80-1201 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 51 of 56 ICP-MS - MS Batch:Prep Method: Prep Date: Sample ID:XL28040-001MS 63783 12/29/2022 0950Analytical Method:7470A Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date %Rec Limit Sample Amount Dil(mg/L)(mg/L)(mg/L) Mercury 0.0019 12/29/2022 1259970.0020 80-120ND1 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 52 of 56 ICP-MS - MSD Batch:Prep Method: Prep Date: Sample ID:XL28040-001MD 63783 12/29/2022 0950Analytical Method:7470A Matrix:Aqueous Parameter Result Q % Rec Spike Amount Analysis Date% RPD %Rec Limit % RPD Limit Sample Amount Dil(mg/L)(mg/L)(mg/L) Mercury 0.0019 12/29/2022 1301950.0020 80-1201.9 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 53 of 56 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 54 of 56 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 55 of 56 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 56 of 56 APPENDIX C HISTORICAL GROUNDWATER ANALYTICAL RESULTS MW-1 HISTORICAL GROUNDWATER ANALYTICAL RESULTS GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL BESSEMER CITY, NORTH CAROLINA Date 4/97 9/97 4/98 9/98 4/99 9/99 5/00 9/00 5/01 12/018/0212/025/0311/035/04 11/04 4/05 11/05 5/06 11/06 6/07 11/07 6/08 11/08 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 11/16 7/17 11/175/18 11/18 5/19 11/19 7/20 12/20 8/21 12/21 8/22 NCGPS Appendix I VOCs Acetone BDL BDLBDLBDL BDL BDL BDL 210 BDL NT NT NT BDLBDL BDL BDL BDL BDL BDL BDL BDL 3.4BJ BDL BDL BDL BDL 13J BDL BDL BDL BDL BDL 7.7J 28 8.1J BDL BDL BDL 16J 4.3J 2.3J NT 15J 4.5J 8.2J BDL BDL 6.2J BDL BDL BDL 6,000 Benzene BDL BDLBDLBDL BDL 7 BDL BDL BDL NT NT NT 1 BDL 2.6 3.1 2.6 3.3 3.2 2.7 BDL 2.6 2.4 2.3 2.2 BDL 2.5 3.4 2.5 2.7 2.4 0.8J 2.3 2.1 2.3 2.3 2.7 2.5 2.1 2.5 2.4 NT 4.2 2.5 2.3 3 2.7 3.2 2.5 2.2 2.6 1 CD BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.13J BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.76J BDL BDL BDL BDL BDL BDL BDL BDL 700 CB BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT 1.5 BDL 1 1.2 BDL 1.3 1.2 BDL BDL 0.73J 0.67J 0.69J 0.66J BDL 1 1.4 0.99J 1.1 BDL 0.42J 0.87J 0.79J 0.79J 0.94J 1 1 0.8J 1.1 1.2 NT 4.1 1.1 1.2 1.6 1.4 1.5 1.4 1.2 1.1 50 CA BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL BDL BDL BDL BDL BDL BDL BDL 0.65J 0.73J 0.57J 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 3,000 1,2-DCB BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDL 1.4 BDL BDL BDL BDL BDL BDL BDL 0.36J 0.38J 0.42J BDL BDL 0.41J 0.62J 0.5J 0.53J 0.42J BDL 0.4J BDL BDL BDL BDL BDL BDL 0.51J BDL NT 0.5J 0.46J 0.45J 0.61J 0.56J 0.61J 0.51J 0.53J 0.46J 20 1,4-DCB BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL 2.8 3.2 2.9 4 3.8 3.3 BDL 3 3 3.1 2.6 BDL BDL 4.2 3.1 3.9 3.1 3 3.4 3.2 2.9 3.4 3.7 3.5 2.8 3.7 3.8 NT 5.8 3.7 3.3 4.3 3.9 3.6 3.6 3.6 3.5 6 1,1-DCA BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL BDL BDL BDL BDL BDL BDL BDL 1.1 1 0.96J 0.88J BDL 0.77J 0.64J 0.78J 0.76J 0.8J 0.78J 0.78J 0.72J 0.88J 0.67J 0.89J 0.83J 0.53J 0.74J 0.66J NT BDL0.62J 0.56J 0.53J 0.5J 0.47J 0.43J BDL 0.63J 6 1,1-DCE BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL BDL BDL BDL BDL 1 1.1 BDL 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 7 cis-1,2-DCEBDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT 3 BDL 5.5 6.3 6.2 7.1 7.6 6.8 6.7 6.6 6.1 5.6 5.4 5.5 4.8 6.5 6.2 5.5 5.6 3.8 4.4 4.4 4.5 4.1 5.7 4.8 3.8 4.2 3.3 NT 2.5 3.9 3.5 4 3.5 3.8 3.1 2.7 3.3 70 EB BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.71J BDL BDL BDL BDL BDL BDL BDL BDL 600 MC BDL BDL5.8 PCBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL BDL 9 8.2 8.7 8.1 7.3 6.1 7B 5.4 5.2 5 BDL 4 0.97J 0.59J 0.64J 0.54J 2 2.4 0.53J 3.2 BDL BDL 1.9 2.3 0.82J 1.6 NT 0.78J 1.6 2.3 0.41J 1.9 1.1 1.5 BDL 2 5 PCE BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL BDL BDL 4.3 BDL BDL 1.2 BDL 0.91J 0.99J 1 0.95J BDL 0.76J BDL 1.2 0.79J 0.76J BDL 0.88J 0.76J 0.81J 0.6J 0.64J 0.74J 0.8J 0.77J 0.69J NT BDL0.64J 0.6J 0.53J 0.53J 0.52J 0.5J 0.51J BDL 0.7 Toluene BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL 0.43J BDL BDL BDL BDL 0.52J 600 TCE BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL BDL BDL BDL BDL 1 1.2 BDL 1.1 1.2 0.96J 0.91J BDL 0.7J BDL 0.86J 0.77J 0.81J 0.64J 0.87J 0.83J 0.64J 0.78J 0.9J 0.83J 0.74J 0.86J 0.6J NT BDL0.67J 0.5J 0.59J 0.51J 0.57J 0.43J BDL 0.47J 3 VC BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL BDL BDL BDL BDL BDL BDL BDL 0.62J BDL BDL BDL BDL 0.44J BDL BDL 0.4J 0.34J 0.27J 0.37J BDL 0.33J BDL BDL BDL BDL 0.41J BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.03 Xylenes 27 BDLBDL 25 21 10 BDL 25 14 NT NT NT 53 17 19 BDL 18 19 18 13 18 12 7 10 15 14 18 9.9 9.5 8.4 4.8 13 16 8.7 15 4.8 3.9 13 14 7.5 12 NT 18 13 17 9.1 16 19 11 2.6 11 500 EPA 8260 (SIM) 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 NT NT NT NT NT NT BDL BDL BDL NT NT NT NT NT 3 RCRA Metals Arsenic BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDL 12 BDL 20 BDL 12 15 BDL BDL BDL BDL BDL BDL BDL BDL BDL 5.3BJ BDL 12B BDL BDL 4.8J 7.8J BDL BDL BDL 3.2 1.2 1.8J NT 25 BDL BDL BDL BDL BDL BDL BDL BDL 10 Barium 53 62 56 610 BDL BDL BDL BDL BDL NT NT NT 61 73 30 130 50 61 58 30 27 27 26 24 23J 28 25 26 26 27 31 31 30 26 28 28 31 31 29 29 28 NT 190 31 25 26 26 30 27 31 29 700 Cadmium BDL 2 BDLBDL BDL BDL 1 BDL BDL NT NT NT BDLBDL BDL BDL 1.1 BDL 2.2 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.3 0.095J BDL NT 29 BDL 0.17J BDL 0.13J 0.19J 0.17J 0.17J 1.1 2 Chromium 38 57 98 100 33 20 11 20 BDL NT NT NT 20 110 BDL 260 14 84 88 BDL 3.6J 7.1 BDL 2.2J BDL BDL 2.1J 2.7J BDL 2.9J BDL 6.1 6.7 2.4J BDL 6.9 8.2 8.7J 2.1J 6.9 5.6 NT 520 4.2J 1.7J 1.5J 4.2J BDL BDL 3.9J BDL 10 Lead 8 18 9 9.8 BDL BDL BDL BDL BDL NT NT NT 13 16 BDL 41 8.2 12 10 BDL 9 2.2J BDL 3.9 5.1BJ 2.1J BDL BDL 4.2J BDL 4.4J BDL 19 19 3BJ 2.9J BDL BDL 0.32J 0.71J 0.45J NT 71 0.68J BDL BDL BDL BDL BDL 0.52 2.1J 15 Mercury BDL 0.2 0.2 1.2 BDL BDL BDL BDL BDL NT NT NT BDL 0.5 0.51 0.29 BDL 0.18 0.2 BDL 0.068J BDL BDL .059J BDL BDL BDL BDL .064J 0.21 .094J 0.28 0.28 .037BJ.038J 0.53 BDL0.23B0.031J 0.33 0.16 NT 12 0.11J BDL BDL BDL BDL BDL BDL BDL 1 Selenium BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL BDL BDL BDL BDL 6.3 BDL BDL BDL 2.6J 3.9J BDL BDL 3.9BJ BDL 7J 3.3J BDL 8.7J BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 4.9J BDL BDL BDL BDL BDL BDL BDL BDL 20 Silver BDL BDLBDLBDL BDL BDL BDL BDL BDL NT NT NT BDLBDL BDL BDL BDL BDL BDL BDL 0.95J BDL BDL BDL BDL BDL BDL BDL 0.52J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.37J BDL BDL BDL BDL BDL BDL BDL BDL 20 Notes: Groundwater samples collected on above listed dates and analyzed for Appendix I VOC's and RCRA metals; and 1-4-dioxane by EPA Method 8260 (select ion monitoring (SIM)) November 2018 to 2019. BDL = below detection limit; NT = not tested NCGPS = North Carolina Groundwater Protection Standard VOCs = volatile organic compounds; CD = carbon disulfide; CA = chloroethane; CB = chlorobenzene; DCB = dichlorobenzene; DCE = dichloroethene; MC = methylene chloride; PCE = tetrachloroethene; TCE = trichloroethene; VC = vinyl chloride PC = suspected laboratory contaminant NT = not tested, due to dry well bold and shade denotes above NCGPS data presented in micrograms per liter (ug/l) B = detected in method blank J = estimated result <PQL and >=MDL MW-2 HISTORICAL GROUNDWATER ANALYTICAL RESULTS GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL BESSEMER CITY, NORTH CAROLINA Date 4/97 9/97 4/98 9/98 4/99 9/99 5/00 9/00 5/01 12/01 8/02 12/02 5/03 11/03 5/04 11/04 4/05 11/05 5/06 11/06 6/07 11/07 6/08 11/08 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 11/16 7/17 11/17 5/18 11/18 5/19 11/19 7/20 12/20 8/21 12/21 8/22 12/22 NCGPS Appendix I VOCs Acetone BDL BDL BDL BDL BDL BDL BDL 76 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.5BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3J BDL BDL BDL BDL BDL BDL BDL 6.5J BDL 6,000 Benzene BDL BDL BDL BDL 10 BDL BDL 9 BDL BDL BDL 1.1 BDL 2.3 7.6 5.6 1.1 8.8 8.6 3.6 5.9 4.7 7.3 5.4 0.56J BDL 0.22J 6.1 4.8 4.3 2.8 2.6 0.55J 4.9 0.85J 3.4 3.9 0.83J 2.8 BDL 3.5 0.67J BDL 0.8J 1.4 4.2 4.6 1.6 5.1 3.7 2.2 4 1 Bromoform BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.37J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4 2-Butanone BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 5.4J BDL BDL BDL BDL BDL BDL 4,000 CD 17 BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 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 BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.32J 0.58J 0.37J BDL BDL BDL 0.44J 0.48J BDL BDL BDL BDL 0.58J BDL BDL 0.5J BDL 0.4J BDL 0.45J BDL BDL BDL BDL 0.54J 0.72J BDL 1.1 0.77J BDL 1.2 50 CA BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.55J 0.76J 0.56J BDL BDL BDL BDL 0.58J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3,000 Chloroform BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL0.42BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 70 1,4-DCB BDL BDL BDL BDL 6 BDL BDL BDLBDL BDL BDL BDL BDL BDL 4.8 4.1 BDL 5 6.8 3.8 5.6 3.2 7.4 3.7 0.41J BDL BDL 5.7 6 5.4 3.5 4.1 0.82J 6.2 0.54J 2.8 4.6 1.6 3.9 BDL 4.1 0.65J 1.1 1.3 0.63J 3.9 4.7 1.2 5.3 3.6 1.1 5.3 6 1,1-DCA 14 BDL BDL 16 32 10 5 56 8.9 15.4 4.6 11 BDL 2.8 7.2 7.4 1 22 12 2.7 BDL 7.6 5.8 6.4 0.5J BDL 0.15J 5.9 2.9 3.5 1.6 3.2 0.84J 3.8 0.71J 2.8 2.6 2.6 1.5 0.4J 2.2 0.84J 0.94J 0.43J 0.64J 2 2.2 0.55J 1.5 1.3 1.3 BDL 6 1,2-DCA BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 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 0.4 1,1-DCE BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.26J BDL BDL BDL BDL BDL 1 BDL 0.22J 0.21J BDL BDL 0.29J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 7 cis-1,2-DCE 480 62 100 210 300 28 91 160 96 20.9 12 170 4 190 250 140 34 310 320 290 260 160 210 150 21 95 10 270 160 200 110 90 38 150 27 120 150 50 81 2.1 49 15 13 20 37 120 65 39 63 32 12 27 70 trans-1,2-DCE BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL 1.3 BDL BDL BDL 0.58J 0.49J 0.45J BDL BDL BDL BDL BDL 0.3J 0.28J BDL BDL 0.48J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.42J 0.42J BDL BDL BDL BDL BDL BDL 100 1,2-DCP BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.22J 0.22J BDL BDL BDL BDL 0.76J 0.32J 0.34J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.6 4-M-2-P BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.45J BDL BDL BDL BDL BDL 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 MC BDL BDL BDL BDL BDL BDL BDL 39 BDL BDL BDL BDL BDL BDL BDL 5.6 BDL 46 29 BDL 5 17B 7.9 13 1 BDL BDL 13 2.8 4.4 0.98J 9.2 BDL 5.8 1.2 6.9 1.2 0.65J 0.77J BDL 4.8 1.2 BDL BDL BDL 1.3 2.4 BDL 0.81J 1.3 1.7 1.1 5 MI BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.59J 0.8J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NS Styrene BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 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 BDL BDL BDL 70 PCE 27 5.5 9.8 26 27 22 BDL 75 9 25.8 8.7 13 2 BDL 2.1 3.3 5 20 9.7 1.9 BDL 5.8 3 3.4 0.35J BDL BDL 1.8 1.7 1.7 0.38J 1.4 0.23J 1 BDL 1.5 0.7J 1.3 0.47J 1 1 0.69J 0.81J BDL BDL 0.6J 0.79J BDL 0.54J 0.46J BDL 0.52J 0.7 1,1,1-TCA BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.095J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 200 TCE 14 BDL BDL 9 18 BDL BDL 31 9.1 6.6 2.6 8.9 BDL 7.2 4.9 3.6 2.1 16 11 4.3 BDL 6.1 5.5 4.4 0.36J BDL BDL 3.7 3.5 3 1.1 2.5 0.78J 2.4 0.43J 1.9 1.9 1.3 1 0.65J 1.3 0.56J BDL BDL 0.53J 1.4 1.2 0.47J 1.1 0.62J BDL 0.77J 3 VC 20 BDL 16 18 26 10 54 37 84 11.5 5.3 BDL 4.1 BDL 30 21 22 40 17 18 26 11 18 5.1 1.8 33 5.9 23 19 11 22 5.7 3.6 24 6.7 BDL 20 0.56J 13 BDL 2.2 BDL BDL 1.5 47 20 13 14 15 4.9 1.4 3 0.03 Xylenes BDL BDL BDL BDL 12 BDL BDL 25 BDL 14.3 BDL 5 BDL BDL 2.9 3.2 BDL 32 16 1 BDL 6.2 3.8 5.6 BDL BDL BDL 0.58J 2.3 3.8 1 11 BDL 4.5 BDL 6.2 1 1.8 1.3 BDL 11 1.7 BDL BDL BDL 3.2 5.9 BDL 3.1 5.2 BDL 6.3 500 EPA 8260 (SIM) 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 NT NT NT NT NT NT BDL BDL 1.1J 2.3J BDL 2.5J 6.2 9.4 8.1 3 RCRA Metals Arsenic 17 11 7 6 BDL BDL BDL BDL 17 BDL BDL BDL BDL BDL 5 BDL BDL BDL BDL 8.8 BDL 4.5J BDL BDL BDL BDL BDL BDL 5.3BJ BDL 14B BDL BDL BDL 5.8J BDL BDL BDL 0.44J 0.55J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 10 Barium 1200 3000 830 560 BDL BDL BDL BDLBDL 129 113 150 130 170 270 110 130 220 260 270 200 130 110 100 50 74 20J 130 69 46 59 130 48 85 58 79 26 48 20 96 120 99 46 69 74 87 120 30 83 92 180 88 700 Cadmium 2 7 BDL BDL 2 3 4 3 BDL BDL 2 BDL BDL BDL BDL 11 2.1 BDL 2.1 2.6 3.5 BDL 0.8J BDL BDL 1.2J 2.4 BDL BDL 0.86J BDL BDL BDL 0.81J BDL BDL BDL BDL 0.38 1.8 0.21J 0.29J 0.14J BDL BDL 0.14J BDL 0.15J BDL BDL 0.85 BDL 2 Chromium 19 21 13 19 BDL BDL BDL BDLBDL BDL 8 BDL BDL BDL BDL BDL BDL BDL 6 9.6 BDL BDL BDL BDL BDL BDL BDL BDL 3.8J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.61J 0.44J BDL BDL BDL BDL BDL 9 BDL BDL BDL BDL BDL 10 Lead 120 180 52 48 BDL 31 12 19 BDL BDL BDL BDL 8.5 9 11 7.6 4.9 BDL 9.4 12 3.4 BDL 3B 2.8J 5BJ BDL BDL 3.1J 13 BDL 8.3J 1.9J BDL 2.6J 2.5BJ BDL BDL BDL 0.33J BDL BDL 0.32J 0.58J 0.48J 0.4J 0.48J 0.32J BDL 0.27J 0.32J 2.1 0.41J 15 Mercury BDL 0.2 BDL 0.87 BDL BDL BDL BDLBDL 0.4 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.13 BDL BDL BDL BDL BDL BDL BDL.054BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Selenium BDL BDL BDL BDL BDL BDL BDL BDLBDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.6J BDL BDL 3J BDL 3.2J 8.1BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4J 20 Silver BDL BDL BDL BDL BDL BDL BDL BDL 22 BDL 7 BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.98J BDL BDL BDL BDL BDL BDL BDL 0.74J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Notes: Groundwater samples collected on above listed dates and analyzed for Appendix I VOC's and RCRA metals; and 1-4-dioxane by EPA Method 8260 (select ion monitoring (SIM)) starting on November 13, 2018. BDL = below detection limit; NT = not tested NCGPS = North Carolina Groundwater Protection Standard VOCs = volatile organic compounds; CD= carbon disulfide; CB = chlorobenzene; CA = chloroethane; DCB = dichlorobenzene; DCA = dichloroethane; DCE = dichloroethene; DCP = dichloropropane; MC = methylene chloride; MI - methyl iodide; 4-M-2-P = 4-methyl-2-pentanone; PCE = tetrachloroethene; TCA =trichloroethane; TCE = trichloroethene bold and shade denotes above NCGPS data presented in micrograms per liter (ug/l) B = detected in method blank J = estimated result <PQL and >=MDL MW-2D HISTORICAL GROUNDWATER ANALYTICAL RESULTS GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL BESSEMER CITY, NORTH CAROLINA Date 9/00 5/01 12/01 8/02 12/02 5/03 11/03 5/04 11/04 4/05 11/05 5/06 11/06 6/07 11/07 6/08 11/08 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 11/16 7/17 11/17 5/18 11/18 5/19 11/19 7/20 12/20 8/21 12/21 8/22 12/22 NCGPS Appendix I VOCs Acetone BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.9J BDL BDL BDL BDL BDL BDL BDL BDL BDL 6,000 Benzene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.54J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 1,1-Dichloroethane BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.22J 0.3J 0.45J BDL BDL BDL BDL 1.8 0.43J 4 0.41J 4.8 0.43J 2.6 BDL 6 cis-1,2-Dichloroethene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.31J 0.2J 0.21J BDL BDL 0.17J 0.58J BDL 0.32J 0.32J BDL 0.23J 0.43J 0.32J 0.29J BDL 0.48J 0.84J 10 1.2 0.4J BDL BDL 16 2.8 37 2.3 44 3.3 18 0.63J 70 Methylene Chloride BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.1 BDL BDL BDL BDL BDL BDL 0.63J BDL BDL BDL 0.73J BDL 5 Methyl Iodide BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.28J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NS Tetrachloroethene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.17J BDL 0.15J BDL BDL BDL BDL 0.6J 0.26J 0.24J BDL 0.19J 0.24J 0.23J BDL BDL 0.27J 0.54J BDL 0.71J BDL BDL BDL 4.9 1.1 12 0.88J 13 1.3 1.6 BDL 0.7 Trichloroethene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.21J BDL BDL BDL BDL BDL 0.21J 0.3J 0.41J BDL BDL BDL BDL 2.7 0.64J 6.6 0.64J 9.4 0.91J 2.3 BDL 0.7 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 BDL BDL 1.3 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 500 EPA 8260 (SIM) 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 1.4J 2.1J BDL 5.1 1.7J 6.5 1J 5.7 1.1J 3 RCRA Metals Arsenic 47 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6.6J BDL BDL BDL 0.53J 0.81J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 10 Barium 1,600 BDL 27 26 29 26 26 BDL 29 BDL BDL BDL 36 22J 27 16J 20J 12J 22J 13J 31 17J 17J 19J 16J 48 38 19J 27 61 29 29 37 18 18 21 21 17 24 18 22 24 19 23 39 700 Cadmium 61 1 1 BDL BDL BDL BDL BDL 1.1 3.5 BDL 1.2 BDL BDL BDL BDL 0.64J BDL BDL BDL 0.69J BDL BDL BDL 0.73J BDL 1.4J BDL BDL BDL 0.9J 0.29 1.3 0.51 BDL 0.45J 0.39J 0.23J 0.59 0.13J 0.29J 0.13J 0.46J 0.53 1.5 2 Chromium 44 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL 10 Lead 150 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.2 BDL BDL BDL BDL 5.1 5.8BJ BDL BDL BDL BDL 3.2J 3.2J BDL BDL 3.5J BDL 3.6J BDL BDL 0.3J 1.1 BDL BDL 0.38J 0.25J BDL 0.39J BDL 0.38J BDL BDL BDL 1.4 15 Mercury BDL BDL 0.6 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.061J BDL BDL BDL BDL BDL BDL BDL .052BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Selenium BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.6BJ 3J BDL 3.3J BDL BDL BDL 6.2J 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 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.7J BDL BDL BDL BDL 0.99J BDL BDL 0.41J BDL BDL BDL BDL 0.4J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Notes: Groundwater samples collected on above listed dates and analyzed for Appendix I VOC's and RCRA metals; and 1-4-dioxane by EPA Method 8260 (select ion monitoring (SIM)) starting on November 13, 2018. BDL = below detection limit; NT = not tested NCGPS = North Carolina Groundwater Protection Standard VOCs = volatile organic compounds NA = not applicable bold and shade denotes above NCGPS data presented in micrograms per liter (ug/l) B = detected in method blank J = estimated result <PQL and >=MDL MW-3 HISTORICAL GROUNDWATER ANALYTICAL RESULTS GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL BESSEMER CITY, NORTH CAROLINA Date 4/97 9/97 4/98 9/98 4/99 9/99 5/00 9/00 5/01 12/01 8/02 12/02 5/03 11/03 5/04 11/04 4/05 11/05 5/06 11/06 6/07 11/07 6/08 11/08 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 11/16 7/17 11/17 5/18 11/18 5/19 11/19 7/20 12/20 8/21 12/21 8/22 12/22NCGPS Appendix I VOCs Acetone BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.4BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.1J 2.7J BDL 3.3J 2.5J BDL BDL BDL BDL BDL BDL BDL BDL 6,000 Benzene BDL BDL BDL BDL 6 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 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 CB BDL BDL BDL BDL 6 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 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 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 0.28J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 1,4-DCB BDL BDL BDL BDL 10 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 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 1,1-DCA BDL BDL BDL BDL 39 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 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 cis-1,2-DCEBDL 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 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 70 MI BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.49J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 Toluene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.82J BDL BDL BDL BDL 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 VC 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 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 EPA 8260 (SIM) 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 NT NT NT NT NT NT BDL BDL BDL NT NT NT NT NT NT 3 RCRA Metals Arsenic BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6.1 BDL 14 BDL BDL BDL 4J BDL BDL BDL BDL 9.4BJ BDL BDL BDL 5.4J 8.4J 7.3J 4.5J BDL BDL 0.36J 0.39J BDL BDL BDL BDL BDL BDL 1.5J BDL BDL BDL BDL BDL 10 Barium 180 260 190 260 BDL BDL BDL BDL BDL 41 65 100 54 90 110 87 44 120 120 180 35 50 49 40 35 110 34 80 40 41 41 73 37 3.2 33 36 26 26 26 100 31 61 25 24 18 35 17 21 27 30 22 16 700 Cadmium BDL 6 BDL BDL 1 1 4 8 BDL BDL BDL BDL BDL BDL BDL BDL 1.1 BDL BDL 1.3 BDL BDL 1.2J BDL BDL 2.5 BDL 0.61J BDL BDL BDL BDL BDL BDL BDL 0.7J BDL 3.6J 0.25 0.29 0.22J 0.31J 0.78 0.4J BDL 0.6 0.42J0.35J 0.35J0.28J 0.47J0.14J 2 Chromium BDL 10 12 24 BDL BDL BDL 14 BDL BDL BDL BDL BDL 5 BDL BDL BDL 6.5 BDL 12 2.6J BDL BDL BDL BDL 6.1 BDL 2.8J 3.6J 2.2J BDL BDL BDL BDL BDL 2.3J BDL 0.89J 1J BDL BDL BDL 2.4J 1.6J 1.6J BDL 1.4J 0.63J BDL BDL 2.4J 1.5J 10 Lead 50 53 53 95 38 42 12 63 BDL 56 12 22 5.2 14 17 13 BDL 18 12 30 BDL 3 6.5B 6.4 3.8BJ 21 BDL 5.4J 11 6.9J 3.5J BDL 16 6.9J 2.9BJ 5.9J BDL BDL 2.2 1.8 1.2 1.4 1.2 1.2 1.4 1.3 2.5 BDL 3.1 1.5 2.3 0.71J 15 Mercury BDL BDL BDL 0.6 BDL BDL BDL BDL BDL 0.4 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.059J BDL BDL BDL 0.067J BDL BDL BDL BDL BDL 0.015J BDL.062BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Selenium BDL BDL BDL BDL BDL BDL BDL BDL BDL 5 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.9BJ 2.8J 3.2J BDL BDL BDL BDL 3.3J BDL 5.5J 3.1J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Silver BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.91J BDL BDL BDL BDL BDL BDL BDL 0.98J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Notes: Groundwater samples collected on above listed dates and analyzed for Appendix I VOC's and RCRA metals; and 1-4-dioxane by EPA Method 8260 (select ion monitoring (SIM)) starting on November 13, 2018. BDL = below detection limit; NT = not tested NCGPS = North Carolina Groundwater Protection Standard VOCs = volatile organic compounds; CB = chlorobenzene; DCB = dichlorobenzene; DCA = dichloroethane; DCE = dichloroethene; MI = methl iodide; VC = vinyl chloride bold and shade denotes above NCGPS data presented in micrograms per liter (ug/l) B = detected in method blank J = estimated result <PQL and >=MDL MW-4 HISTORICAL GROUNDWATER ANALYTICAL RESULTS GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL BESSEMER CITY, NORTH CAROLINA Date 4/97 9/97 4/98 9/98 4/99 9/99 5/00 9/00 5/01 12/01 8/02 12/02 5/03 11/03 5/04 11/04 4/05 11/05 5/06 11/06 6/07 11/07 6/08 11/08 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 11/16 7/17 11/17 5/18 11/18 5/19 11/19 7/20 12/20 8/21 12/21 8/22 12/22NCGPS Appendix I VOCs Acetone BDL 130 BDL BDL BDL BDL BDL 140 BDL BDL BDL BDL 51 BDL BDL BDL BDL BDL BDL BDL BDL3.8BJ BDL 7.3J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 9.5J BDL 2.7J BDL BDL 2.3J 4.3J 5.5J 4.7J BDL 14J BDL BDL BDL BDL BDL BDL 6,000 Benzene 6.2 7.8 5.4 BDL 6 10 BDL BDL BDL 7.7 BDL BDL BDL 2.9 4.6 1.6 2.6 5.5 5.6 1.4 5.6 6.6 4.4 5.4 0.28J BDL 1 7.4 2.4 0.52J 0.39J 4.1 0.39J 0.43J 0.89J 2.5 2.4 BDL 0.46J 5.1 4.4 5.1 BDL BDL 2.7 0.83J 1.8 0.41J 4.3 5.1 4.1 0.5J 1 Bromoform BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.38J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4 CB BDL BDL BDL BDL 6 7 BDL BDL BDL BDL BDL BDL BDL 2.5 7.4 1.4 3.6 6.8 9.2 1.6 9.7 7.8 8.9 7.4 BDL BDL 1.4 11 4 1.2 BDL 8.6 1 1.2 2.6 4.9 4.6 0.36J 1.1 13 14 12 1 0.47J 9.8 2.3 5.3 0.78J 16 22 16 BDL 50 CA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.3 2.3 BDL BDL 2.9 2.1 BDL BDL 2.1 1.8J 1.4J BDL BDL BDL 1.3J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.84J BDL 0.51J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3,000 1,2-DCB BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.8 BDL BDL 2 2.5 BDL 13 2.5 2.8 2.4 BDL BDL BDL 2.5 1.1 BDL BDL 1.2 BDL BDL BDL 1 0.94J BDL BDL 2.6 2.8 2.3 BDL BDL 1.3 BDL 0.63J BDL 2 2.5 1.9 BDL 20 1,4-DCB 6.2 BDL BDL 5.3 10 12 BDL BDL BDL BDL BDL BDL BDL 3.9 8.9 1.3 3.8 9.5 10 1.2 12 13 12 12 0.56J BDL 0.9J 15 4.7 0.6J 0.7J 12 0.85J BDL 1.8 6 4.9 BDL BDL 15 14 14 1.2 BDL 6.9 1.9 3.2 BDL 9.2 13 8.6 0.43J 6 1,1-DCA 56 49 27 32 37 48 14 16 14 20 BDL BDL BDL 7.9 12 4 5.6 9.3 8.2 2.4 8.1 8.1 6.5 6.4 BDL BDL 0.9J 8 2.1 0.66J 0.4J 4.3 0.37J 0.67J 0.77J 2.2 1.6 0.24J 0.33J 3.4 2.1 2.6 BDL BDL 0.93J BDL 0.48J BDL BDL 0.94J 0.73J BDL 6 1,2-DCA 8.3 BDL BDL BDL BDL 6 BDL BDL BDL BDL BDL BDL BDL BDL 1.9 BDL BDL 1.1 1 BDL BDL 0.67J BDL BDL BDL BDL BDL BDL 0.16J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.4 cis-1,2-DCE 28 38 26 20 18 41 5 17 5.5 11.1 BDL BDL 2.1 4.4 10 3.3 5.2 10 9.6 2.5 9 11 5.8 8.6 0.23J BDL 0.57J 6.4 1.9 0.37J 0.16J 3.1 0.18J 0.3J 0.4J 1 1 BDL 0.22J 2 1.6 1.7 BDL BDL 1.4 BDL 1 BDL 1.8 1.3 1.3 BDL 70 trans-1,2-DCE BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.32J 0.21J 0.26J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 2.7J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100 1,2-DCP BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.2 BDL BDL BDL 1.2 BDL BDL 1.5 1.2 1.2 BDL BDL BDL 1.5 0.39J BDL BDL 0.82J BDL BDL BDL 0.36J BDL BDL BDL 0.75J 0.58J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.60 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 NT NT NT NT NT NT BDL BDL BDL BDL BDL 33J BDL 50 BDL 3 EB BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.3 BDL BDL BDL BDL BDL BDL BDL BDL 0.24J BDL BDL BDL BDL 1.1 BDL BDL 0.61J BDL BDL BDL BDL BDL BDL BDL 0.22J 0.34J 0.59J BDL BDL BDL BDL 0.56J BDL BDL BDL BDL 0.55J 0.47J BDL 600 MC BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL0.89BJBDL BDL BDL BDL BDL BDL 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 Toluene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.2 BDL 1.2 BDL BDL BDL BDL BDL BDL 1.2 0.55J 0.65J BDL BDL BDL BDL 0.53J BDL BDL 0.43J BDL BDL BDL BDL BDL BDL BDL 0.58J 0.44J 0.46J BDL BDL BDL BDL 0.51J BDL 0.48J 0.42J 0.89J BDL 600 TCE BDL 5.3 BDL BDL BDL 8 BDL BDL BDL BDL BDL BDL BDL BDL 1.8 BDL 1.6 2.1 2.9 1.1 BDL 2.4 1 1.5 BDL BDL 0.2J BDL 0.27J BDL BDL 0.6J BDL BDL BDL 0.19J BDL BDL BDL 0.42J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 VC BDL 11 BDL 13 18 22 14 BDL BDL 7.6 BDL BDL 3.7 BDL 9.9 6.2 11 18 9.2 6.7 9.6 11 6.2 7.3 1.4 BDL 2.5 6.5 1.8 1 0.52J 3.1 0.6J 0.53J 0.85J 1.1 0.87J BDL BDL 1.7 1.6 1.5 BDL BDL 0.81J BDL 0.72J BDL 1.1 0.89J 0.78J BDL 0.03 Xylenes BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4.5 BDL BDL BDL BDL BDL 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 BDL BDL BDL BDL 500 EPA 8260 (SIM) 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 NT NT NT NT NT NT BDL 6.9 BDL 4.9 BDL 34 20 39 BDL 3 RCRA Metals Arsenic 12 13 5 BDL BDL BDL BDL BDL 19 8 6 BDL BDL 16 12 5.3 BDL 12 18 7.4 19 18 19 17 5.5J BDL BDL 25 28B 5.5BJ 4.3BJ 39 5.4BJ 7.3J 18 10 5J 3.7J 6 23 29 26 6.3 5.1 7.8 6.4 7.5 11 7.9 14 10 5 10 Barium 290 250 110 160 BDL BDL BDL BDL BDL 92 180 BDL BDL 88 91 39 43 110 150 36 110 45 120 57 7.9J 15J 12J 15J 24J 12J 10J 29 8.7J 12J 10J 63 16 7.8J 11 56 150 58 15 7.6 12 18 21 12 54 83 100 7.1 700 Cadmium 24 44 22 7.1 13 10 12 5 2 3.6 BDL BDL BDL BDL 5 BDL BDL BDL BDL BDL BDL BDL BDL 1.2J BDL BDL BDL BDL BDL BDL BDL 2.1 BDL BDL BDL 0.8J BDL BDL 1.6 0.088J 0.51 0.32J0.36J BDL BDL 0.24J 1.3 0.7 0.61 0.49J 0.82 0.5 2 Chromium 15 10 5 BDL BDL BDL BDL BDL BDL BDL 5 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4.6J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.4J BDL BDL BDL BDL 0.78J BDL BDL BDL 2.6J 10 Lead 39 30 13 6.3 BDL 86 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 6.6 BDL BDL BDL 8.8 BDL 5.3B 7.8 4.7BJ BDL 2.1J BDL BDL BDL 4.9J BDL BDL BDL BDL 7.6J BDL BDL 0.26J 0.29J BDL BDL 0.35J 0.43J BDL BDL 0.53J BDL BDL BDL BDL BDL 15 Mercury BDL BDL BDL 4.2 BDL 0.4 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL .092J .086J BDL BDL .084BJ BDL 0.016J BDL .053BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 Selenium BDL BDL BDL BDL BDL BDL BDL BDL BDL 6 BDL BDL BDL 5.6 BDL BDL BDL 6.5 BDL BDL BDL BDL 4.5J 17 BDL 3.7J 2.8BJ BDL 14 BDL BDL BDL 5.1J BDL BDL BDL BDL BDL BDL BDL 26 BDL BDL BDL BDL BDL BDL BDL 3.4J 8.3 10 BDL 20 Silver BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 11 7.3 BDL 0.82BJ BDL BDL BDL BDL 18 BDL BDL 23 1.3J 0.41J BDL BDL BDL BDL BDL 0.96J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Notes: Groundwater samples collected on above listed dates and analyzed for Appendix I VOC's and RCRA metals; and 1-4-dioxane by EPA Method 8260 (select ion monitoring (SIM)) starting on November 13, 2018. BDL = below detection limit; NT = not tested NCGPS = North Carolina Groundwater Protection Standard VOCs = volatile organic compounds; CB = chlorobenzene; CA = chloroethane; DCB = dichlorobenzene; DCA = dichloroethane; DCE = dichloroethene; DCP = dichloropropane; EB = ethylbenzene; MC = methylene chloride; TCE = trichloroethene; VC = vinyl chloride bold and shade denotes above NCGPS data presented in micrograms per liter (ug/l) B = detected in method blank J = estimated result <PQL and >=MDL MW-4D HISTORICAL GROUNDWATER ANALYTICAL RESULTS GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILL BESSEMER CITY, NORTH CAROLINA Date 9/00 5/01 12/01 8/02 12/02 5/03 11/03 5/04 11/04 4/05 11/05 5/06 11/06 6/07 11/07 6/08 11/08 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 11/16 7/17 11/17 5/18 11/18 5/19 11/19 7/20 12/20 8/21 12/21 8/22 12/22 NCGPS Appendix I VOCs Acetone BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.6J 1.7J BDL 3.7J 2.5J 5.7J 3.4J BDL BDL BDL BDL BDL BDL BDL BDL 6,000 Benzene BDL BDL BDL BDL 2.1 BDL BDL 2.4 2.4 2.2 2.2 2.2 2 BDL 2.1 1.8 1.8 2.4 BDL 2.2 2.4 2 1.8 2.1 0.29J 2 1.9 2.2 2 2.1 1.9 2 1.5 1.6 1.5 1.9 1.5 1.5 1.5 1.7 1.8 1.6 1.2 1.5 1.3 1 Chlorobenzene BDL 5.6 BDL BDL 4.1 5.7 4.3 6.7 7.5 7.6 8.5 10 9.6 11 9.2 8.8 8.8 11 9.1 11 12 8.9 9.4 10 10 11 11 14 13 13 12 15 14 14 14 15 13 14 15 17 16 18 17 18 17 50 Chloroethane BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.63J BDL 0.62J BDL BDL BDL BDL BDL BDL 0.48J BDL BDL BDL 0.55J BDL BDL 0.76J 0.35J BDL BDL 0.41J BDL 0.4J BDL 0.41J BDL BDL BDL BDL BDL BDL 3,000 1,2-Dichlorobenzene BDL BDL 2.4 BDL 2.7 3.4 2 3.9 3.9 3.7 4 4.3 3.9 13 3.6 3.6 3.7 3.9 BDL 3.5 3.5 2.7 2.6 2.6 1.7 2.6 2.5 2.7 2.5 2.7 2.2 2.4 2.2 2.1 2.2 2.1 2 1.9 1.9 2.1 1.6 1.9 1.8 1.7 1.5 20 1,4-Dichlorobenzene BDL 8.6 BDL BDL 9 7.8 7.2 9.2 9.2 9.5 10 10 10 11 10 10 11 11 10 12 12 9.5 10 10 11 11 11 13 12 12 11 12 12 12 13 12 11 11 12 12 10 13 12 12 12 6 1,1-Dichloroethane 8 8.1 8.2 BDL 6.3 4.9 1.8 4.5 4.2 4.4 4.2 3.4 3.5 BDL 3.5 3.4 3.5 2 BDL 3 3.9 2.8 2.6 3.4 2.6 2.9 3.6 3.2 3 3.7 3.2 3 3 2.5 2.8 3.1 3 2.4 3.2 2 2.4 1.6 1.8 BDL 1.4 6 1,2-Dichloroethane BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.25J BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.39J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.4 cis-1,2-Dichloroethene BDL BDL 5.2 BDL 5.2 4 BDL 5.2 6.3 7 8 7.8 8.9 9.2 12 13 13 9 13 12 15 15 13 19 14 15 20 16 17 23 21 18 20 15 19 20 21 17 23 11 14 8.4 13 9.1 11 70 trans-1,2-Dichloroethene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.22J BDL BDL 0.24J BDL BDL 0.27J 0.28J 0.28J 0.3J BDL 0.44J BDL 0.42J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 100 1,2-Dichloropropane BDL BDL BDL BDL 1 1 BDL BDL BDL BDL BDL BDL BDL BDL 0.94J 0.89J 0.82J 0.45J BDL 0.83J 1.3 0.85J 0.74J 0.78J 0.83J 0.74J BDL 0.65J 0.77J 0.89J 0.8J 0.77J 0.73J 0.61J 0.71J 0.75J 0.73J 0.63J 0.71J 0.46J 0.55J 0.45J 0.42J 0.42J 0.45J 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 NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT 47J 50 59 62 74 83 80 85 71 3 Methyl Iodide BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.4J 0.32J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NS Toluene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.25J 0.34J BDL 0.38J BDL BDL BDL 0.33J BDL BDL BDL BDL BDL 0.38J 0.36J 0.38J 0.31J 0.39J 0.48J BDL BDL BDL BDL BDL 1.5 0.4J 0.41J 0.42J BDL 0.41J BDL 600 Trichloroethene BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1 1.1 1.1 0.77J BDL 0.99J BDL 1.4 1.2 1.9 1.2 1.3 1.7 0.87J 1.3 1.8 1.5 1.3 1.5 1 1.2 1.3 1.5 1.1 BDL 0.53J 0.86J BDL 0.67J BDL 0.73J 3 Vinyl Chloride BDL BDL 5.5 BDL BDL 4.7 BDL 4.9 3.9 5 6.7 3.8 5 5 5.2 6.1 4.9 5.2 6.2 5.8 4.6 5.8 5.4 6.9 6 7.3 9.7 8.5 7.3 7.6 7.3 5.9 6.3 6.4 7.2 8.5 6.7 4.6 5.8 4.4 4.1 3.5 3.4 3.7 3.9 0.03 EPA 8260 (SIM) 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 37 47 51 73 73 87 83 82 84 3 RCRA Metals Arsenic BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 4.9J 8.7J BDL BDL 4J 5.4BJ 4.5J 14B BDL 6.3BJ 9.4J 9.7J BDL BDL 6.3J 3.1 3.3 9 4 23 4 5.9 5.9 27 10 8.2 7.6 11 8.1 10 Barium BDL BDL 108 97 100 110 110 110 120 120 110 120 120 130 130 120 120 120 140 120 120 120 140 120 140 180 130 150 110 170 140 140 150 140 150 170 140 150 150 180 190 200 210 210 200 700 Cadmium 9 7 10 14 17 13 33 30 40 30 30 29 110 51 98 23 47 8.8 28 16 14 14 21 15 20 91 44 5.2 25 82 59 51 14 3.1 4.4 11 22 38 44 1.6 40 1.1 7.7 1.4 33 2 Chromium BDL BDL 7 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.9J 2.3J BDL BDL 2.4J 4.1J BDL BDL BDL BDL BDL 2.5J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 BDL BDL BDL BDL 10 Lead 22 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3 BDL 4.8 3.6B 4.7 9.7BJ 3.7J BDL BDL 4.7J BDL 3.6J 3.5J 30B 2J 4.1BJ 6.8J 10 7.5J 2.6 0.8J 0.3J 0.26J 2.8 1.4 2.9 3.1 0.61J BDL 0.43J 0.69J 0.53J 3 15 Mercury BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.076J BDL BDL BDL BDL BDL BDL BDL .054BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 10 Selenium BDL BDL 10 8 BDL BDL BDL BDL BDL BDL BDL 5.1 BDL 2.9J BDL BDL BDL 8.3J 3.3J 2.6BJ BDL 3.9J 3.4BJ 14 BDL BDL BDL BDL BDL 12 8.9J BDL BDL 10 BDL BDL BDL BDL 5.6 11 12 11 14 11 13 20 Silver BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.9J 0.76J 2.4J 2.3J BDL 1.9J BDL BDL BDL BDL 2.3J 2.3J BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 20 Notes: Groundwater samples collected on above listed dates and analyzed for Appendix I VOC's and RCRA metals; and 1-4-dioxane by EPA Method 8260 (select ion monitoring (SIM)) starting on November 13, 2018. BDL = below detection limit; NT = not tested NCGPS = North Carolina Groundwater Protection Standard VOCs = volatile organic compounds bold and shade denotes above NCGPS data presented in micrograms per liter (ug/l) B = detected in method blank J = estimated result <PQL and >=MDL MW-5 HISTORICAL GROUNDWATER ANALYTICAL RESULTS GASTON COUNTY - CLOSED BIGGERSTAFF LANDFILLBESSEMER CITY, NORTH CAROLINA Date 4/97 9/97 4/98 9/98 4/99 9/99 5/00 9/00 5/01 12/01 8/02 12/02 5/03 11/03 5/04 11/04 4/05 11/05 5/06 11/06 6/07 11/07 6/08 11/08 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 11/16 7/17 11/17 5/18 11/18 5/19 11/19 7/20 12/20 8/21 12/21 8/22 12/22 NCGPS Appendix I VOC's Acetone BDL BDL BDL BDL BDL BDL BDL 110 BDL NT BDL BDL 120 BDL BDL 28 240 BDL 25 BDL 35 12BJ 210 110 200 9.1J 360 15J 140 25 46 NT 630E 410 1,200 8.2J 88 68 840 29 14J NT 8.4J 36 59H BDL 100 540 BDL 20 27 NT 6,000 Benzene 5.9 BDL BDL BDL BDL 7 BDL 5 BDL NT 4.3 BDL 4.6 2.9 2.6 3.5 3.6 2.9 3.8 3.3 BDL 2.5 1.8 2.3 3.1 BDL 3.9 3.3 1.5 2.4 2.4 NT 2.9 3.7 3.8 4.5 3.5 3.9 3.5J 4.2 3.5 NT 3.8 3.4 2.3 3.2 4.1 2.5 2.9 2.9 2.3 NT 1 BF BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 3.1 BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 4 2-Butanone BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 13 BDL BDL BDL BDL NT 25 12 73 BDL BDL BDL 65 BDL BDL NT BDL BDL 7.1J BDL 21 13 BDL BDL BDL NT 4,000 CD BDL 6.1 BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.4J BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL 0.2J BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL 0.53J BDL NT 700 CT BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.15J BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.3 CB 6.8 BDL 8.5 8.3 10 13 13 12 12 NT 13 15 21 21 18 25 24 19 34 24 37 18 11 15 19 22 42 30 10 16 16 NT 19 34 33 35 29 30 34 37 33 NT 38 33 22 23 33 17 19 BDL 18 NT 50 CA BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.76J BDL BDL BDL BDL 1.1J 0.64J BDL BDL 0.78J NT 0.68J 1.5J 1.8J 1.4J 1.2J 1.1J BDL 1.3J BDL NT 0.72J 0.63J 0.45J 0.78J 0.8J 0.56J BDL BDL BDL NT 3,000 CM BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 0.86J BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 3 1,2-DCB BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL 1.2 1.6 BDL BDL 1.2 1 BDL 1.3 1.1 8.7 0.88J 0.9J 1.2 1.4 BDL 2 1.3 0.86J 0.87J 0.88J NT 0.97J 1.2 1.6 1.4 1.5 1.3 BDL 1.6 1.6 NT 1.6 1.5 1 0.94J 1.2 0.64J 0.59J 0.54J 0.6J NT 20 1,4-DCB 10 8.2 12 8.4 12 14 10 BDL 11 NT 9.3 11 11 7.5 6.1 7.4 6.5 6.1 7.2 6.5 7.9 5.3 5 6.3 6.7 7.5 10 7.4 4.7 5.2 5.3 NT 6.3 7.4 8.7 7.6 8 6.7 8.6 8.1 7.9 NT 8.6 8.2 5.9 5.5 7.2 3.9 3.9 3.8 3.8 NT 6 1,1-DCA BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL 1 BDL BDL BDL BDL BDL BDL BDL BDL 0.14J 0.14J 0.15J BDL BDL 0.16J BDL 0.16J 0.17J BDL NT 0.19J BDL BDL 0.25J BDL 0.37J BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 6 cis-1,2-DCE BDL BDL BDL BDL BDL 9 BDL 6 BDL NT 2.7 2.3 BDL BDL 1.2 BDL 1.2 1 BDL 1.1 BDL 1.3 1.7 1.8 1.8 BDL 0.97J 1.2 0.92J 1.2 0.8J NT 0.82J 0.8J 0.5J 0.66J 0.36J 0.69J BDL 0.49J 0.62J NT 0.5J BDL 0.46J BDL BDL BDL BDL BDL BDL NT 70 trans-1,2-DCE BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.1 BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 100 cis-1,3-DCP BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.11J BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.4 trans-1,3-DCP BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.13J BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.4 2-Hexanone BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.9J BDL BDL NT 1.8J BDL 0.83J BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 280 4-M-2-P BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.77J BDL BDL NT BDL BDL 1.2J BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 100 MC BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL0.84BJ BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 5 Styrene BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.12J BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 70 PCE BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL 4 BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.38J BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.7 Toluene BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL 940 8.5 BDL BDL BDL BDL 1.1 BDL 6 0.52J 0.34J 0.8J 28 63 23 BDL 0.74J 0.53J 4.9 NT 7.5 71 140 1.1 11 0.59J 210 1.2 1.1 NT 1 2.3 40 0.86J 40 1.4 1 0.61J 0.92J NT 600 1,1,1-TCA BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.34J BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 200 TCE BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.18J BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 3 VC BDL BDL BDL BDL BDL BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.33J BDL 0.17J BDL BDL 0.22J BDL BDL 0.29J BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 0.03 Xylenes 26 BDL BDL BDL 7 BDL BDL BDLBDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL 0.47J BDL BDL BDL 0.36J BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 500 EPA 8260 (SIM) 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 NT NT NT NT NT NT 1.8J BDL BDL BDL BDL BDL BDL BDL NT 3 RCRA Metals Arsenic BDL BDL 6 BDL 15 14 BDL BDLBDL NT NT BDL 25 7.2 6.7 BDL BDL BDL BDL 6.5 BDL BDL 5.5 NT 15 6.1J 5.1J 5.4J 8.8BJ 6.5J 14B NT 14B 8.3J BDL BDL 6.7J 4.5J 8.8 5.5 4 NT 4.9 6.4 9.8 4.4 1.7J 3.1 2.7 3.7 3.2 NT 10 Barium 730 1500 1300 1600 720 1500 BDL BDLBDL NT NT 250 370 260 220 250 320 180 250 350 180 210 170 NT 260 220 260 160 140 130 160 NT 180 150 260 150 200 140 130 150 130 NT 150 200 160 160 170 140 170 150 130 NT 700 Cadmium 7 22 18 24 12 15 2 7 BDL NT NT 2.1 3.8 1.8 2.6 6.6 2.4 1.5 2.4 7.5 1.5J 3.5 2.2 NT 6.1 3 0.95J 2.2 1.4 1.6J 1.5J NT 2.2 BDL 0.89J 2 0.9J 3.1J 1.6 1.8 1.3 NT 1.3 0.34J 0.65 0.78 0.38J 1.1 0.57 1.9 1.6 NT 2 Chromium BDL 18 25 22 BDL BDL BDL BDLBDL NT NT BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL 3.5J BDL BDL BDL BDL NT 24B BDL BDL BDL 1.2J BDL BDL 0.92J BDL NT 1.9J BDL BDL BDL BDL BDL BDL BDL BDL NT 10 Lead 43 130 120 140 85 86 BDL 29 BDL NT NT 14 47 23 12 9.8 13 3.6 BDL 22 2.3J BDL 6.1B NT 7.7BJ 4J BDL BDL 5.1J BDL 2.3J NT BDL BDL 2BJ 4.7J 9.3J BDL 1.5 3.7 2 NT 1.4 2.6 1.1 2.1 0.3J 2.1 0.43J 3.1 0.77J NT 15 Mercury 2.4 0.3 2.2 4.9 BDL 0.4 0.2 0.6 BDL NT NT BDL 0.5 BDL 0.4 BDL BDL BDL 0.1 0.31 0.1 0.23 0.13 NT 1.2 0.59 0.24 0.18 0.20 0.35 0.38 NT 0.55 0.38B .059J 0.036J BDL 0.16B .056J 0.1 0.1 NT BDL BDL BDL BDL BDL BDL BDL 0.12J BDL NT 1 Selenium BDL BDL BDL BDL BDL BDL BDL BDLBDL NT NT BDL 5 BDL BDL BDL BDL BDL BDL BDL BDL BDL 4.9 NT 3.4J 4.7J 2.7BJ BDL 11 BDL BDL NT 3.1J BDL BDL BDL BDL BDL BDL BDL BDL NT BDL BDL BDL 1.6J BDL BDL BDL 1.3J BDL NT 20 Silver BDL BDL BDL BDL BDL BDL BDL BDLBDL NT NT BDL BDL BDL BDL BDL BDL BDL BDL BDL 1.2J BDL BDL NT 0.66J BDL BDL BDL 2.3J BDL BDL NT BDL BDL BDL BDL 2.2J BDL BDL BDL BDL NT BDL BDL BDL BDL BDL BDL BDL BDL BDL NT 20 Notes: Groundwater samples collected on above listed dates and analyzed for Appendix I VOC's and RCRA metals; and 1-4-dioxane by EPA Method 8260 (select ion monitoring (SIM)) starting on November 13, 2018. BDL = below detection limit; NT = not tested NCGPS = North Carolina Groundwater Protection Standard VOC's = volatile organic compounds; BF = bromoform; CD = carbon disulfide; CT = carbon tetrachloride; CB = chlorobenzene; CA = chloroethane; CM = chloromethane; DCB = dichlorobenzene; DCA = dichloroethane; DCE = dichloroethene; DCP = dichloropropane; 4-M-2-P = 4-methyl-2-pentanone; TCE = trichloroethene; VC = vinyl chloride; MC = methylene chloride; PCE = tetrachloroethene; TCA = trichloroethane NT = not tested, due to dry or limited water conditions bold and shade denotes above NCGPS data presented in micrograms per liter (ug/l) J = estimated result <PQL and >=MDL; E = quantitation of compound exceeded the calibration range B = detected in method blank H = analyzed out of holding time