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Mr. Bruce Woody <br />June 03, 2025 <br />Page 2 <br /> <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 I (15A NCAC 13B .1600), plus those constituents listed in <br />Appendix II that have been previously and reliably detected at this facility (mercury, naphthalene, <br />sulfide) <br />▪ additional samples obtained from well 6801-MW04 for constituents required by regulations for <br />monitoring of C&D landfills (manganese, iron, chloride, sulfate, total dissolved solids, alkalinity) <br />(well 6801-MW04 is associated with the monitoring programs for both the active C&D landfill <br />and North sanitary landfill) <br />▪ additional samples obtained from well 6801-MW04 for quality control parameters (MS/MSD) <br /> <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 electronic data deliverables (EDDs) will be compiled and <br />submitted to the State’s EQUIS database per NCDEQ requirements. This action was previously covered <br />under the regulatory task. <br /> <br />Task-02 <br />Groundwater Sampling Event 65 (Event 2026 S1) <br /> <br />TRC proposes to conduct groundwater sampling event 65 at the Orange County Regional Landfill – North <br />Facility during May 2026. <br /> <br />TRC shall coordinate field and laboratory services, obtain groundwater samples, review sampling <br />documentation received from groundwater sampling personnel, chemically analyze groundwater samples <br />(Eurofins), validate analytical data provided by the contracted laboratory, update historical summary tables, <br />and prepare a report suitable for direct submission to NC-DEQ. <br /> <br />During the subject sampling event, the laboratory will analyze: <br />▪ samples obtained from three monitoring wells associated with the sanitary landfill (6801-MW6R, <br />6801-MW7R, 6801-MW17), or 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 />Docusign Envelope ID: 174C8FB9-37C8-4E30-AECB-BF3B9992AAC6