2024-543-E-Solid Waste-TRCcompanies-Groundwater Monitoring Program FY 24-25 South landfill

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Mr. Bruce Woody July 9, 2024 Page 3 (Ms. Nunn, 1621 Eubanks Road, Chapel Hill, NC 27516; identified as N1) for analysis of the constituents listed in 40 CFR Part 258 (15A NCAC 13B .1600) Appendix I. TRC will prepare a digital version (Adobe Acrobat or functional equivalent) of the report and provide it to OCSWM and to NCDEQ. Additionally, all EDDs will be compiled and submitted to the state’s EQUIS database per NCDEQ requirements. This action was previously covered under the regulatory task. Task-03 – PFAS Sampling and Analysis – If Necessary A memorandum dated March 13, 2023, by North Carolina Department of Environmental Quality (NCDEQ) Division of Waste Management (DWM), Solid Waste Section (Section), stated that all groundwater, surface water, and leachate samples collected at solid waste sanitary landfills after July 1, 2023, are required to be analyzed for per- and polyfluorinated substances (PFAS). Per this requirement, PFAS sampling and analysis was completed at the South Landfill during the 2023 S2 and 2024 S1 sampling events. Results of the PFAS analysis were submitted to the NCDEQ under separate cover with the regularly submitted semi-annual monitoring reports. Upon review of the PFAS analysis results, the NCDEQ may require additional analysis for PFAS at select and/or all monitoring wells at the South Landfill facility. Accordingly, laboratory costs for additional PFAS analysis during the upcoming 2024 S2 and 2025 S1 sampling events is included as a separate line item until further direction from the NCDEQ. Task-04 - Stormwater Analytical Stormwater samples will be collected and submitted to the laboratory for analysis by landfill personnel. Laboratory invoices for stormwater samples will be submitted to TRC for payment and billed to OCSWM under this task. Task-05 - Regulatory Compliance TRC proposes to respond to unanticipated issues concerning environmental regulatory compliance that may arise at the active South Landfill during the prescribed service period. This work task will be conducted on a “time-and-materials, not to exceed the estimated fee” basis using the attached TRC fee schedule (Attachment 1). TRC will invoice OCSWM only for actual time expended and reimbursable expenses incurred in providing the required services. The total fee for this task will not be exceeded without approval from OCSWM. Ꚛ Ꚛ Ꚛ Docusign Envelope ID: C2C361F9-7BC4-403F-AB18-95833B796604