Media Filter Rehabilitation for WTP Filters #1 & #2

The City of Benicia, California is requesting proposals for media filter rehabilitation at its Water Treatment Plant covering two filters (#1 and #2), with proposals due September 29, 2026 at 3:00 p.m., and attendance at a mandatory pre-proposal conference and site walk on September 8, 2026 at 10:00 a.m. is required for eligibility.

The scope includes complete replacement of filter media (granular activated carbon, sand, and gravel) meeting AWWA standards; smoothing and recoating of interior filter walls with NSF/ANSI 61-approved elastomeric polyurethane coating; and inspection and repair of the filter underdrain system as needed. This RFP covers only filters #1 and #2; the City anticipates rehabilitating the remaining four filters (#3–#6) sequentially over the next four years, each through a separate RFP process.

Contractors must demonstrate financial qualification by providing reviewed financial statements for the last three fiscal years upon request. Required insurance includes Commercial General Liability with minimum limits of $2 million per occurrence and $4 million aggregate, automobile liability at $1 million, and workers' compensation coverage. Pricing submissions must use an electronic pricing table with line items for mobilization, spent media removal and disposal, replacement media installation, coating application, and startup/commissioning services.

Evaluation weighs respondent qualifications and experience (13.6%), years and types of previous projects (13.6%), litigation and claims history (13.6%), project completion capability (9.1%), and cost proposal (4.5%), totaling 110 points. The anticipated award date is October 22, 2026, with contract execution on October 29, 2026, and project commencement on November 3, 2026.