Media Filter Rehabilitation for WTP Filters #1 & #2

City of Benicia - Public Works has issued request for proposal, solicitation RFP# 27-018.

The City of Benicia’s Water Treatment Plant is soliciting proposals from qualified contractors to rehabilitate two water treatment filters. The current project includes: Complete replacement of filter media — GAC, sand, and gravel — meeting applicable AWWA standards. Smoothing and recoating of the interior walls of the two filters. Inspection and, if necessary, repair of the filter underdrain system. The current RFP and resulting agreement will cover only two filters. The remaining four filters (#3–#6) are anticipated to be rehabilitated sequentially over the next four years, approximately every two years. Each future project will require a separate RFP process. In short: This RFP is for the complete rehabilitation of two filters now, with the remaining four filters planned for future rehabilitation.

The Water Treatment Plant has six GAC media filters. To replace the oldest filters, maintain AWWA compliance, and improve overall system reliability, the City plans to complete full media replacement and interior wall coating on two filters. These improvements are intended to enhance water quality, extend filter service life, and reduce ongoing maintenance workloads.

Responses are due September 29, 2026 at 3:00 PM PDT.

Questions must be submitted by September 15, 2026 at 3:00 PM PDT.

A mandatory pre-proposal conference is scheduled for September 8, 2026 at 10:00 AM PDT at Water Treatment Plant, 100 Water Way Benicia CA 94510.

Commodity categories: Construction; Specialty Trade Contractors.

Contact: Rainier Garcia, Water Treatment Superintendent (rgarcia@ci.benicia.ca.us, (707) 746-4393).

9 documents are attached to the notice: Example_Over_$50k_PSA; Example_Over_$50k_PSA_Maintenance_Repair_Services_(2); Example Master PSA; PROPOSAL AUTHORIZATION; Example Design_Architect PSA; 2018 EF1988 PDS EnduraFlex Product Data; 2018 EF1988 MC Spec Sheet Condition Requirements; EF-1988-B-Side-Off-White-B-Side-SDS.

The full solicitation document, addenda and the question-and-answer thread are on the agency's OpenGov portal at https://procurement.opengov.com/portal/beniciaca/projects/295108. Responses are submitted electronically there, and a free vendor account is required before you can upload one.