Summary
The Orange County Sanitation District (OC SAN) is soliciting a progressive design-build Request for Proposal (Project J-143) for the Solids Deep Well Injection System (SDWIS) to be constructed at OC SAN's Plant No. 1 in Fountain Valley, California. The contract covers permitting, design, construction, testing, and commissioning of a full-scale deep well injection facility to manage solids production, including an initial test well, multi-agency permit preparation (EPA UIC, SCAQMD, local), and a two-year extended performance acceptance test. Proposals are due Tuesday, August 11, 2026 at 11:00 AM Pacific Time and must be submitted electronically through the OC SAN OpenGov procurement portal.