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Mr. Bruce Woody
<br />June 03, 2025
<br />Page 3
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<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-MW23,
<br />6801-MW24, 6801-MW301), for the constituents listed in 40 CFR Part 258 Appendix I (15A NCAC
<br />13B .1600), plus those constituents listed in Appendix II that have been previously and reliably
<br />detected at this facility (mercury, naphthalene, sulfide)
<br />▪ samples obtained from four wells (6801-MW21S, 6801-MW21D, 6801-MW23, 6801-MW24) for
<br />chloride, carbon dioxide, manganese, potassium
<br />▪ samples obtained from nine monitoring wells (6801-MW04, 6801-MW110S, 6801-MW110D,
<br />6801-MW21S, 6801-MW21D, 6801-MW21D2, 6801-MW23, 6801-MW24, 6801-MW301) for
<br />hexavalent chromium
<br />▪ samples of surface water obtained from two locations along Old Field Creek, for the constituents
<br />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
<br />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)
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<br />TRC will prepare a digital version (Adobe Acrobat or functional equivalent) of the report and provide it to
<br />OCSWM and to NC- DEQ. Additionally, all EDDs will be compiled and submitted to the state’s EQUIS
<br />database per DEQ requirements. This action was previously covered under the regulatory task.
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<br />Task-03– PFAS Sampling and Analysis – If Necessary
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<br />A memorandum dated March 13, 2023, by North Carolina Department of Environmental Quality (NCDEQ)
<br />Division of Waste Management (DWM), Solid Waste Section (Section), stated that all groundwater, surface
<br />water, and leachate samples collected at solid waste sanitary landfills after July 1, 2023, are required to be
<br />analyzed for per- and polyfluorinated substances (PFAS). Per this requirement, PFAS sampling and analysis
<br />was completed at the North Landfill during the 2023 S2 and 2024 S1 sampling events. Results of the PFAS
<br />analysis were submitted to the NCDEQ under separate cover with the regularly submitted semi-annual
<br />monitoring reports. Upon review of the PFAS analysis results, the NCDEQ may require additional analysis
<br />for PFAS at select and/or all monitoring wells at the North Landfill facility. Accordingly, laboratory costs
<br />for additional PFAS analysis during the upcoming 2025 S2 and 2026 S1 sampling events is included as a
<br />separate line item until further direction from the NCDEQ.
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<br />Docusign Envelope ID: 174C8FB9-37C8-4E30-AECB-BF3B9992AAC6
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