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Mr. Bruce Woody
<br />July 9, 2024
<br />Page 2
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<br />for monitoring of C&D landfills (manganese, iron, mercury, chloride, sulfate, tetrahydrofuran, total dissolved solids, alkalinity) (well 6801-MW110S is associated with the monitoring programs 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) In addition to the above analysis, TRC plans to coordinate with field personnel to obtain one leachate sample from the South Facility for the analysis of the constituents listed in Appendix I, plus BOD, COD, manganese, mercury, nitrate, sulfate, and phosphate. 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 Groundwater Sampling Event 62 (Event 2025 S1) TRC proposes to conduct groundwater sampling event 62 at the Orange County Regional Landfill – South Facility during May 2025. 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 eight compliance wells (6801-MW101, 6801-MW102S, 6801-MW104, 6801-MW105, 6801-MW106, 6801-MW107, 6801-MW110S, 6801-MW111) for the constituents listed in Appendix I
<br /> additional samples obtained from well 6801-MW110S for constituents required by regulations for monitoring of C&D landfills (manganese, iron, mercury, chloride, sulfate, tetrahydrofuran, 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) In addition to the above tasks, TRC plans to coordinate with field personnel to obtain one leachate sample from the South Facility, for the analysis of the constituents listed in Appendix I, plus BOD, COD, manganese, mercury, nitrate, sulfate, and phosphate. TRC also plans to coordinate with field personnel to obtain groundwater samples from one residential well
<br />Docusign Envelope ID: C2C361F9-7BC4-403F-AB18-95833B796604
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