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Mr. Bruce Woody <br />June 03, 2025 <br />Page 2 <br />for both the active C&D landfill and South sanitary landfill) <br />▪samples obtained from well 6801-MW110D for total arsenic <br />▪additional samples obtained from well 6801-MW110S for quality control parameters (MS/MSD) <br />In addition to the above analysis, TRC plans to coordinate with field personnel to obtain one leachate <br />sample from the South Facility for the analysis of the constituents listed in Appendix I, plus BOD, COD, <br />manganese, mercury, nitrate, sulfate, and phosphate. <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 />Task-02 <br />Groundwater Sampling Event 64 (Event 2026 S1) <br />TRC proposes to conduct groundwater sampling event 64 at the Orange County Regional Landfill – South <br />Facility during May 2026. <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 />During the subject sampling event, the laboratory will analyze: <br />▪samples obtained from eight compliance wells (6801-MW101, 6801-MW102S, 6801-MW104, <br />6801-MW105, 6801-MW106, 6801-MW107, 6801-MW110S, 6801-MW111) for the constituents <br />listed in Appendix I <br />▪additional samples obtained from well 6801-MW110S for constituents required by regulations <br />for monitoring of C&D landfills (manganese, iron, mercury, chloride, sulfate, tetrahydrofuran, <br />total dissolved solids, alkalinity) <br />▪samples obtained from well 6801-MW110D for total arsenic <br />▪additional samples obtained from well 6801-MW110S for quality control parameters (MS/MSD) <br />In addition to the above tasks, TRC plans to coordinate with field personnel to obtain one leachate sample <br />from the South Facility, for the analysis of the constituents listed in Appendix I, plus BOD, COD, manganese, <br />mercury, nitrate, sulfate, and phosphate. <br />TRC also plans to coordinate with field personnel to obtain groundwater samples from one residential well <br />(Ms. Nunn, 1621 Eubanks Road, Chapel Hill, NC 27516; identified as N1) for analysis of the constituents <br />listed in 40 CFR Part 258 (15A NCAC 13B .1600) Appendix I. <br />Docusign Envelope ID: E79879EB-31A0-44EB-B1E0-900452922197