Orange County NC Website
Browse       Search
<br /> <br />Task Order Request <br />Revised <br />TO: Mr. Robert Williams <br />Orange County Solid Waste <br /> <br />FROM: David Garrett, PG, PE <br /> Senior Project Manager <br /> <br />DATE: February 19, 2026 <br /> <br />SUBJECT: Orange County Regional Landfills <br />Closed MSW Landfill Leachate PFAS Study – Phase 2 <br />Bench-Scale Leachate Treatment Study (ECT2) <br />Proposal for Laboratory & Engineering Services <br /> <br /> TRC Proposal No. TBD <br /> Estimated Fee = $49,200 <br /> 2025 PN: 704501 <br /> <br />At your request, TRC Engineers, Inc. (TRC), is pleased to offer this proposal for a second phase of the <br />Leachate PFAS Study at the closed MSWLF unit (South landfill), located at the Orange County Regional <br />Landfill Facility (Facility) on Eubanks Road in Chapel Hill, NC. This proposal outlines our understanding <br />of the project scope, tasks to be completed, assumptions underlying our proposal, and anticipated fees. <br />PROJECT UNDERSTANDING: <br />The project will partner TRC with a vendor, Emerging Compounds Treatment Technologies (ECT2) to <br />perform a detailed treatability evaluation of the South landfill leachate. The initial stage sampling <br />detected PFAS in the leachate. While there are currently no compliance standards for leachate, TRC <br />has advised Orange County Solid Waste Management (OCSW) that regulations are being established <br />that follow US EPA guidelines for drinking water. We believe standards for PFAS in leachate will be <br />imposed as a pretreatment requirement by the receiving wastewater treatment plant, operated by <br />Orange Water and Sewer Authority (OWASA). There are uncertainties at play: which PFAS will require <br />treatment and what levels of removal are necessary for pretreatment. <br />TRC presented recommendations for the second phase of the evaluation to OCSW in September 2025. <br />ECT2 would need larger samples of the leachate (~200 gallons, or more), returned to their laboratory <br />for site specific bench-scale trials of their various proprietary processes and reagents. Using the test <br />results, combined with OCSW’s flow meter data, TRC and ECT2 will be able to define treatment costs <br />Docusign Envelope ID: 7BBC917B-EAAD-41A1-899F-622B1233BDFC