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Home My WebLink About2025-710-E-Solid Waste-Groundwater Monitoring Program (FY 2025-2026)-OCSWM North Landfill TO: Mr. Bruce Woody Orange County Solid Waste Management FROM: Deborah Coakley, Sean Jarvah, Bilgen Yuncu Environmental Services Division DATE: 06/03/25 SUBJECT: Groundwater Monitoring Program (FY 2025-2026) OCSWM North Landfill: TRC Project No. TBD TRC Engineers, Inc., (formerly Draper Aden Associates) proposes to provide professional environmental services to Orange County Solid Waste Management (OCSWM) pertaining to the groundwater monitoring and corrective action program at North Landfill, in accordance with an existing Services Agreement between OCSWM and TRC. The subject proposal is intended to encompass services that will be provided to conduct the Fall 2025 and Spring 2026 groundwater sampling/reporting events (July 1, 2025 through June 30, 2026). This proposal is restricted to services to be provided for OCSWM North Landfill. Specific tasks to be performed during the service period are detailed as follows. Task-01 Groundwater Sampling Event 64 (Event 2025 S2) TRC proposes to conduct groundwater sampling event 64 at the Orange County Regional Landfill – North Facility during November 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 NCDEQ. During the subject sampling event, the laboratory will analyze: ▪ samples obtained from twelve compliance wells (6801-MW04, 6801-MW06R, 6801-MW07R, 6801-MW14A, 6801-MW14B, 6801-MW15, 6801-MW16, 6801-MW17, 6801-MW20, 6801- MW21S, 6801-MW21D, 6801-MW22) and two surface water locations 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) Docusign Envelope ID: 174C8FB9-37C8-4E30-AECB-BF3B9992AAC6 Mr. Bruce Woody June 03, 2025 Page 2 ▪ samples obtained from four “nature and extent” monitoring wells (6801-MW21D2, 6801-MW23, 6801-MW24, 6801-MW301), 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) ▪ samples obtained from four wells (6801-MW21S, 6801-MW21D, 6801-MW23, 6801-MW24) for chloride, carbon dioxide, manganese, potassium ▪ 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 ▪ 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) ▪ 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) ▪ 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. Task-02 Groundwater Sampling Event 65 (Event 2026 S1) TRC proposes to conduct groundwater sampling event 65 at the Orange County Regional Landfill – North Facility during May 2026. 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: ▪ 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) Docusign Envelope ID: 174C8FB9-37C8-4E30-AECB-BF3B9992AAC6 Mr. Bruce Woody June 03, 2025 Page 3 ▪ samples obtained from nine monitoring wells associated with the sanitary landfill (6801-MW4, 6801-MW14A, 6801-MW14B, 6801-MW15, 6801-MW16, 6801-MW20, 6801-MW21S, 6801- MW21D, 6801-MW22), for the constituents listed in 40 CFR Part 258 Appendix II (15A NCAC 13B.1600) ▪ samples obtained from four “nature and extent” monitoring wells (6801-MW21D2, 6801-MW23, 6801-MW24, 6801-MW301), 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) ▪ samples obtained from four wells (6801-MW21S, 6801-MW21D, 6801-MW23, 6801-MW24) for chloride, carbon dioxide, manganese, potassium ▪ 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 ▪ samples of surface water obtained from two locations along Old Field Creek, for the constituents listed in 40 CFR Part 258 Appendix II (15A NCAC 13B .1600) ▪ additional samples obtained from well MW-04 for constituents required by regulations for monitoring of C&D landfills (manganese, iron, chloride, sulfate, total dissolved solids, alkalinity) ▪ additional samples obtained from well MW-04 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 EDDs will be compiled and submitted to the state’s EQUIS database per DEQ 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 North 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 North Landfill facility. Accordingly, laboratory costs for additional PFAS analysis during the upcoming 2025 S2 and 2026 S1 sampling events is included as a separate line item until further direction from the NCDEQ. Docusign Envelope ID: 174C8FB9-37C8-4E30-AECB-BF3B9992AAC6 Mr. Bruce Woody June 03, 2025 Page 4 Task-04 – Update/Revise CAP and GWMP Upon further direction from the NCDEQ regarding PFAS concentrations, the existing Corrective Action Plan (CAP) and Groundwater Monitoring Plan (GWMP) for the North Landfill will be updated/revised to include potential remedies and path forward for addressing 1,4-Dioxane and/or PFAS concentrations in groundwater. Task-05 - Environmental Compliance TRC proposes to respond to both anticipated and unanticipated issues concerning environmental regulatory compliance that may arise at North 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. COMPENSATION. TRC shall be compensated for performing the above Services as follows. Task Fee Fee structure 01 GW sampling event 64 $23,050 lump sum 02 GW sampling event 65 $27,700 lump sum 03 PFAS Analysis $17,000 lump sum 04 Update/Revise CAP and GWMP $ 8,700 lump sum 05 Regulatory Compliance $ 7,200 time & materials TOTAL NOT TO EXCEED FEE: $83,650 Ꚛ Ꚛ Ꚛ In order to authorize initiation of the proposed work, please sign and date this proposal, and return a copy to our office. Meanwhile, if you have any questions, please contact me by e-mail (dcoakley@trccompanies.com) or telephone (804.514.8957). Attachment 1: TRC Fee Schedule - 2025 Docusign Envelope ID: 174C8FB9-37C8-4E30-AECB-BF3B9992AAC6 Mr. Bruce Woody June 03, 2025 Page 5 AUTHORIZATION TO PROCEED [GROUNDWATER MONITORING AND CORRECTIVE ACTION PROGRAMS: FY26] NORTH LANDFILL Orange County Solid Waste Management date THIS INSTRUMENT HAS BEEN PRE-AUDITED IN THE MANNER REQUIRED BY THE LOCAL GOVERNMENT BUDGET AND FISCAL CONTROL ACT: Office of the Chief Financial Officer date THIS SCOPE OF WORK IS SUBMITTED PURSUANT TO THE TERMS OF THE AGREEMENT DATED FEBRUARY 22, 2017 BETWEEN TRC ENGINEERS, INC., AND ORANGE COUNTY. Thomas R. Laughlin date TRC - Senior Program Manager 50351020-805000 Docusign Envelope ID: 174C8FB9-37C8-4E30-AECB-BF3B9992AAC6 11/25/2025 11/25/2025 11/25/2025 CODE TRC LABOR CLASSIFICATION/CATEGORY HOURLY LABOR RATE Principal/Technical Director EV28 Level IV $378.00 EV27 Level III 329.00 EV26 Level II 294.00 EV25 Level I 272.00 Program Manager/Senior Technical Manager EV24 Level IV $264.00 EV23 Level III 244.00 EV22 Level II 238.00 EV21 Level I 228.00 Project/Technical Manager EV20 Level IV $219.00 EV19 Level III 209.00 EV18 Level II 201.00 EV17 Level I 194.00 Senior Scientist/Engineer/Specialist EV16 Level IV $185.00 EV15 Level III 176.00 EV14 Level II 168.00 EV13 Level I 161.00 Project Scientist/Engineer/Specialist EV12 Level IV $153.00 EV11 Level III 145.00 EV10 Level II 138.00 EV09 Level I 128.00 Scientist/Engineer/Specialist, Technicians, and Project Support EV08 Level VIII $122.00 EV07 Level VII 114.00 EV06 Level VI 105.00 EV05 Level V 98.00 EV04 Level IV 88.00 EV03 Level III 81.00 EV02 Level II 74.00 EV01 Level I 59.00 TRC Environmental 2025 Rate Schedule (1) A 15% Mark‐up will be added to non‐labor costs and expenses/ODCs. (2) A 6% Communication Fee will be applied to labor charges in lieu of separate reimbursement for photocopying, report production, faxing, computer usage, software usage, telephone charges, and postage costs. Digital productivity solutions/applications include mobile and desktop applications designed to increase efficiency in data collection and representation, excluding custom development as required on a per project basis. (4) All TRC rates are subject to an annual calendar year escalation. (5) All invoicing will apply TRC billing rates in conformance with the rate schedule in effect at the time of the services. (6) A 2% fee will be applied to the invoice amount to cover Professional Liability and Related Insurance costs. (7) For Litigation or Litigation Support Services, please request a copy of our Standard Rates for Litigation Services. (3) Overtime rates will apply to non-exempt (hourly) staff in conformance with applicable law. Docusign Envelope ID: 174C8FB9-37C8-4E30-AECB-BF3B9992AAC6