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Mr. Bruce Woody
<br />July 9, 2024
<br />Page 3
<br /> samples obtained from nine monitoring wells associated with the sanitary landfill (6801-MW4,
<br />6801-MW14A, 6801-MW14B, 6801-MW15, 6801-MW16, 6801-MW20, 6801-MW21S, 6801-
<br />MW21D, 6801-MW22), for the constituents listed in 40 CFR Part 258 Appendix II (15A NCAC
<br />13B.1600)
<br /> samples obtained from four “nature and extent” monitoring wells (6801-MW21D2, 6801-
<br />MW23, 6801-MW24, 6801-MW301), for the constituents listed in 40 CFR Part 258 Appendix I
<br />(15A NCAC 13B .1600), plus those constituents listed in Appendix II that have been previously
<br />and reliably detected at this facility (mercury, naphthalene, sulfide)
<br /> samples obtained from four wells (6801-MW21S, 6801-MW21D, 6801-MW23, 6801-MW24) for chloride, carbon dioxide, manganese, potassium
<br /> samples obtained from nine monitoring wells (6801-MW04, 6801-MW110S, 6801-MW110D, 6801-MW21S, 6801-MW21D, 6801-MW21D2, 6801-MW23, 6801-MW24, 6801-MW301) for hexavalent chromium
<br /> samples of surface water obtained from two locations along Old Field Creek, for the constituents listed in 40 CFR Part 258 Appendix II (15A NCAC 13B .1600)
<br /> additional samples obtained from well MW-04 for constituents required by regulations for monitoring of C&D landfills (manganese, iron, chloride, sulfate, total dissolved solids, alkalinity)
<br /> additional samples obtained from well MW-04 for quality control parameters (MS/MSD) TRC will prepare a digital version (Adobe Acrobat or functional equivalent) of the report and provide it to OCSWM and to NC- DEQ. Additionally, all EDDs will be compiled and submitted to the state’s EQUIS database per DEQ requirements. This action was previously covered under the regulatory task. Task-03– PFAS Sampling and Analysis – If Necessary A memorandum dated March 13, 2023, by North Carolina Department of Environmental Quality (NCDEQ) Division of Waste Management (DWM), Solid Waste Section (Section), stated that all groundwater, surface water, and leachate samples collected at solid waste sanitary landfills after July 1, 2023, are
<br />required to be analyzed for per- and polyfluorinated substances (PFAS). Per this requirement, PFAS
<br />sampling and analysis was completed at the North Landfill during the 2023 S2 and 2024 S1 sampling
<br />events. Results of the PFAS analysis were submitted to the NCDEQ under separate cover with the
<br />regularly submitted semi-annual monitoring reports. Upon review of the PFAS analysis results, the
<br />NCDEQ may require additional analysis for PFAS at select and/or all monitoring wells at the North Landfill facility. Accordingly, laboratory costs for additional PFAS analysis during the upcoming 2024 S2 and 2025 S1 sampling events is included as a separate line item until further direction from the NCDEQ. Task-04 – Update/Revise CAP and GWMP The existing Corrective Action Plan (CAP) and Groundwater Monitoring Plan (GWMP) for the North
<br />Docusign Envelope ID: D6EE15C8-54A3-4D16-BC66-16FC00C06528
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