Project Information

Bid Title

Media Filter Rehabilitation for WTP Filters #1 & #2

Issuing Agency

City of Benicia

Location

California

Published Date

Sep 29, 2026

Closing Date

Oct 6, 2026

Government Level

State & Local

Status

Closed

Ref. #

RFP# 27-018

Original Source

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Project Description

Project ID: RFP# 27-018

Title: Media Filter Rehabilitation for WTP Filters #1 & #2

Addenda: 4

Release Date: 8/31/2026

Due Date: 10/6/2026

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Media Filter Rehabilitation for WTP Filters #1 & #2

Last updated by Addendum #4 on Sep 30, 2026 6:12 AM See what changed

Request for Proposal

Public Works

23 , 238

Project ID: RFP# 27-018

Release Date: Monday, August 31, 2026

· Due Date: Tuesday, October 6, 2026 3:00pm

Posted Monday, August 31, 2026 8:50am

All dates & times in Pacific Time - Los Angeles

Draft Response Events RSVP No Bid6 days, 21 hours, 0 minutes

Post Information

Posted At:Mon, Aug 31, 2026 8:50 AM
Sealed Bid Process:Yes (Bids Sealed / Pricing Sealed)
Private Bid:No

Overview

Summary

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.

Background

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.

Timeline

City Issues RFP:

August 31, 2026

Pre-Proposal Meeting (Mandatory):

September 8, 2026, 10:00am

Water Treatment Plant, 100 Water Way Benicia CA 94510

Question Submission Deadline:

September 15, 2026, 3:00pm

Question Response Deadline:

September 22, 2026, 3:00pm

Proposal Submission Deadline:

October 6, 2026, 3:00pm

Negotiate and agree to final contract terms:

October 13, 2026

Award of Agreement:

October 22, 2026

Execute agreement:

October 29, 2026

Project Agreement Start Date:

November 3, 2026

Commodity Codes

• NAICS 238220Plumbing, Heating, and Air-Conditioning Contractors
• NAICS 333413Industrial and Commercial Fan and Blower and Air Purification Equipment Manufacturing
• NAICS 333999All Other Miscellaneous General Purpose Machinery Manufacturing

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