Summary
The Orange County Sanitation District (OC SAN) solicits proposals to design, permit, construct, test, and commission a Solids Deep Well Injection System (SDWIS) at Plant No. 1, including an initial test well under a separate early GMP to confirm injection feasibility and a two-year performance acceptance testing period. The scope includes full buildout of surface and subsurface facilities, supporting utilities, permitting (EPA UIC, SCAQMD, local), and integration with OC SAN’s existing infrastructure; major civil and mechanical construction is expected. This is a sealed procurement solicitation (not a grant), posted June 16, 2026 and open with proposals due August 11, 2026 at 11:00 AM Pacific Time.