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Mr. Bruce Woody <br />July 9, 2024 <br />Page 2 <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 <br />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 I (15A NCAC 13B .1600), plus those constituents listed in Appendix II that have been previously and reliably detected at this facility (mercury, naphthalene, sulfide) <br /> additional samples obtained from well 6801-MW04 for constituents required by regulations for monitoring of C&D landfills (manganese, iron, chloride, sulfate, total dissolved solids, alkalinity) (well 6801-MW04 is associated with the monitoring programs for both the active C&D landfill and North sanitary landfill) <br /> additional samples obtained from well 6801-MW04 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 electronic data deliverables (EDDs) will be compiled and submitted to the State’s EQUIS database per NCDEQ requirements. This action was previously covered under the regulatory task. <br />Task-02 Groundwater Sampling Event 63 (Event 2025 S1) <br /> <br />TRC proposes to conduct groundwater sampling event 63 at the Orange County Regional Landfill – North <br />Facility during May 2025. <br /> TRC shall coordinate field and laboratory services, obtain groundwater samples, review sampling documentation received from groundwater sampling personnel, chemically analyze groundwater samples (Eurofins), validate analytical data provided by the contracted laboratory, update historical summary tables, and prepare a report suitable for direct submission to NC-DEQ. During the subject sampling event, the laboratory will analyze: <br /> samples obtained from three monitoring wells associated with the sanitary landfill (6801-MW6R, 6801-MW7R, 6801-MW17), or the constituents listed in 40 CFR Part 258 Appendix I (15A NCAC 13B .1600), plus those constituents listed in Appendix II that have been previously and reliably detected at this facility (mercury, naphthalene, sulfide) <br />Docusign Envelope ID: D6EE15C8-54A3-4D16-BC66-16FC00C06528