Site work and new construction of a water / sewer project in Santa Ana, California. Completed plans call for site work for a water / sewer project; and for the construction of a water / sewer project.

PFAS Treatment at John Garthe Reservoir . Questions Due: : Monday, October 27, 2025, at 5:00 P.M. PT The City of Santa Ana PFAS Treatment System at John Garthe Reservoir project includes construction of a twelve ion exchange pressure vessels, three pre-treatment cartridge filter vessels, and on-site sodium hypochlorite generation system with chemical storage for the removal of PFAS and disinfection of raw water produced from City Wells 18, 32, 36 and 39. The project includes sand separator installation for Well 32; well pump and motor upgrades and piping replacements for Wells 18, 36 and 39; replacement of the existing hydro-generator; piping improvements; construction of a new Well 39 electrical building and Well 18 well building; electrical and control improvements; programming; site improvements; and landscaping. The John Garthe Reservoir site includes active reservoirs, multiple wells, and the John Garthe Pump Station. Service shall not be interrupted unless noted otherwise and/ or with prior approval from the City. 2. PFAS Plant Substantial Completion & Water Production must be completed 550 calendar days from date of Notice to Proceed. 3. Complete Startup and Commission the John Garthe PFAS Treatment Plant project must be completed 840 calendar days from date of Notice to Proceed. Note from bidder Shimmick Construction: please note that there is a required form for DBE subcontractors due to use 11-12-2025, Noon..