Request for Proposals - Professional Engineering Consulting Services for the Addition of Treatment for PFAS at the LAWTF

Per- and polyfluoroalkyl substances (PFAS) have been detected in the City of Lathrop’s groundwater at concentrations exceeding State and Federal drinking water standards. The City of Lathrop (City) is requesting proposals from qualified firms to provide professional engineering consulting services for the addition of PFAS treatment at the existing Louise Avenue Water Treatment Facility (LAWTF).

The LAWTF, located at 2112 Louise Avenue, was constructed approximately ten years ago to treat groundwater for arsenic removal from five City supply wells (Wells 6, 7, 8, 9, and 10). The facility has a design capacity of 6,250 gallons per minute (gpm).

Previous studies, including the PFAS Treatment Alternatives Evaluation (EKI, March 2020) and the PFAS Centralized Treatment Feasibility Study (Carollo Engineers, July 2022), and a technical memorandum on the Characterization of PFAS in Groundwater and Evaluation of Planned PFAS Treatment (EKI, 2024), identified centralized treatment at LAWTF as the preferred alternative. The City’s 2025 Water Supply Master Plan Amendment, further emphasizes the need for PFAS treatment in the near term.

The Request for Proposals (RFP) includes detailed information on project scope, submittal requirements, and the selection process. 

Firms interested in submitting a proposal should contact Greg Gibson at ggibson@ci.lathrop.ca.us with the name of a representative, phone number and e-mail address to ensure receipt of further communications relaying to this RFP, including, but not limited to, Addendums.

Interested firms are encouraged to review the RFP and submit their proposals by March 4, 2026 (by 5:00 PM).