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<br /> <br />TO: Mr. Bruce Woody <br /> Orange County Solid Waste Management <br /> <br />FROM: Sean Jarvah <br /> Environmental Services Division <br />DATE: 06/09/23 <br /> <br />SUBJECT: Groundwater Monitoring Program (FY 2023-2024) <br /> OCSWM Active C&D Landfill: <br /> TRC Project No. pending <br /> <br /> <br />TRC Engineers, Inc., (formerly Draper Aden Associates) proposes to provide professional environmental <br />services to Orange County Solid Waste Management (OCSWM) pertaining to the groundwater monitoring <br />and corrective action program at the Active C&D Landfill, in accordance with an existing Services <br />Agreement between OCSWM and TRC. <br /> <br />The subject proposal is intended to encompass services that will be provided during the 12-month period <br />between July 1, 2023, and June 30, 2024 (FY 2023-2024). <br /> <br />This proposal is restricted to services to be provided for the active C&D Landfill. Specific tasks to be <br />performed during the service period are detailed as follows. <br /> <br />A memorandum dated March 13, 2023, by North Carolina Department of Environmental Quality (NCDEQ) <br />Division of Waste Management (DWM), Solid Waste Section (Section), stated that all groundwater, surface <br />water, and leachate samples collected at solid waste sanitary landfills after July 1, 2023, are required to be <br />analyzed for per- and polyfluorinated substances (PFAS). This includes any active, inactive, or closed <br />sanitary landfill currently conducting and reporting water quality and/or leachate sampling results to the <br />Section. Per this requirement, PFAS sampling is included in this proposal and additional laboratory <br />analytical fees are reflected in the sampling fees provided below. <br /> <br />Task-01 <br />Groundwater Sampling Event 37 (Event 2023 S2) <br /> <br />TRC proposes to conduct groundwater sampling event 37 at the Orange County Regional Landfill – Active <br />C&D Landfill during November 2023. Prior to the event, TRC proposes to develop MW-209 using the <br />dedicated pump currently installed in this well. This well had high turbidity during the previous sampling <br />event. Due to the additional PFAS analysis, all efforts should be made to reduce turbidity below 25 NTUs <br />if possible. This activity is only scheduled for the 2023 S2 event. <br /> <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 />DocuSign Envelope ID: C990D277-21FB-4C06-B4C9-915AC8E361A8