Active SLED Opportunity · CALIFORNIA · WEST BASIN MUNICIPAL WATER DISTRICT

    Title 22 Filters 1, 5, and 10 Rehabilitation and Replacement Project

    Issued by West Basin Municipal Water District
    localIFBWest Basin Municipal Water DistrictSol. 253502
    Open · 14d remaining
    DAYS TO CLOSE
    14
    due May 7, 2026
    PUBLISHED
    Apr 13, 2026
    Posting date
    JURISDICTION
    West Basin
    local
    NAICS CODE
    237110
    AI-classified industry

    AI Summary

    West Basin Municipal Water District seeks bids for rehabilitation and replacement of Title 22 Filters 1, 5, and 10 at the Edward C. Little Water Recycling Facility. The project involves removal and replacement of filter components and concrete repairs. Mandatory pre-bid meeting is April 28, 2026. Bid opening is May 7, 2026.

    Opportunity details

    Solicitation No.
    253502
    Type / RFx
    IFB
    Status
    open
    Level
    local
    Published Date
    April 13, 2026
    Due Date
    May 7, 2026
    NAICS Code
    237110AI guide
    Agency
    West Basin Municipal Water District

    Description

    Request for Bids 
    West Basin Municipal Water District (West Basin) is accepting bids for the Title 22 Filters 1, 5, and 10 Rehabilitation and Replacement Project (CIP-10073).  The solicitation phase will begin on April 13, 2026, and the bid opening is scheduled for May 7, 2026, pending any unforeseen delays.  The Project is part of West Basin's current CIP program and has been approved by the Board of Directors to proceed with solicitation for bids.

    Background

    West Basin Municipal Water District’s (West Basin) Edward C. Little Water Recycling Facility (ECLWRF) processes secondary effluent into four types of recycled water, including Title 22 recycled water. Title 22 water is disinfected tertiary recycled water used for irrigation and as source water for three (3) satellite treatment plants that serve refinery customers. At ECLWRF, Title 22 water is produced through clarification, filtration, and disinfection, then pumped from on‑site product water storage tanks into the recycled water distribution system through 48‑inch and 42‑inch pipelines. The distribution system is designed as a closed system with no intermediate storage outside of the treatment plants.

     

    Currently, there are fourteen (14) monomedia gravity filters using anthracite coal, referred to as Title 22 Filters. The Title 22 Filters operate 24 hours per day, 7 days per week, providing tertiary-treated recycled water critical to West Basin's commercial and irrigation applications, satellite treatment plants, and refinery customers. The ECLWRF was originally placed into operation in the mid-1990s and has undergone significant additions and modifications since its inception, and these changes will likely continue.  Filters 1 through 10, referred to as Train 1, were built during ECLWRF's initial construction phases, while Filters 11 through 14, referred to as Train 2, were added (converted) to Title 22 production after initially serving as a pretreatment process for other recycled water products (Barrier water/ Boiler Feed).

     

    Several filters have required repairs over the years due to media loss into the underdrain, filtrate collection gullet, and backwash supply piping. Filters8 and9 were repaired in 2019, followed by Filter2 in 2020 due to similar failures. Media loss affects water quality, facility operations, and production capacity. In 2025, Filters3, 4, and 6 were repaired, along with structural repairs to the north wall of Filters7 and8. The scope of work for Filters1, 5, and10 includes, but is not limited to, the following:

     

    • Removal of existing underdrain panels, laterals, and support channels, including hardware and gaskets for underdrain laterals.
    • Removal of filter media in the basin, including in the floor, gullet, headers, backwash piping, and air headers.
    • Installation of concrete end plugs to support underdrain laterals and gaskets.
    • Installation of a gasket seal around the perimeter of the gullet.
    • Installation of new underdrain laterals, including hardware and gaskets.
    • Installation of new filter media, including backwash and skimming.
    • Modify existing air metering tubes for flexible connection to each of the new underdrain laterals.
    • Leveling of underdrain laterals along filter floor.
    • Repair the concrete surface of the interior and exterior of the backwash troughs using cementitious mortar.

    Project Details

    • Reference ID: RFB-TH-0129
    • Department: Engineering
    • Department Head: Susanna Li (Mangaer of Engineering)

    Important Dates

    • Questions Due: 2026-05-01T00:00:00.000Z
    • Pre-Proposal Meeting: 2026-04-28T17:00:00.000Z — A Mandatory Pre-Bid Meeting is scheduled for April 28th, 2026, at 10:00 A.M.. All Pre-Bid meetings will be conducted remotely by Teams: https://teams.microsoft.com/meet/22126651198948?p=WD7AQSiGlRaZfumcEW Meeting ID: 221 266 511 989 48 Passcode: r5Hx9Bj2 Need help? | System reference Dial in by phone +1 213-349-1594,,835484099# United States, Los Angeles Find a local number Phone conference ID: 835 484 099# For organizers: Meeting options | Reset dial-in PIN In order to qualify as a potentially responsive bidder, prospective bidders must attend the pre-bid meeting. Contractors who fail to attend the Mandatory Pre-Bid Meeting, will not be allowed to bid on the Project as a prime contractor.

    Meetings & Milestones

    EventDateLocation
    Job Walk*2026-04-28T18:00:00.000ZAn optional On-site job walk will follow the Pre-Bid Meeting on Tuesday, April 28th, 2026, at 11:00 A.M. The optional On-site job walk will take place at the Project site located at West Basin’s Edward C. Little Water Recycling Facility, 1935 S Hughes Way, El Segundo, CA 90245. In-person attendees shall also provide their own personal protective equipment (PPE) including: Hard hat, safety vest, protective eyewear, and closed-toe shoes.

    Addenda

    • Addendum #1 (released 2026-04-13T18:57:10.939Z) —

      Attachment A has been replaced in its entirety. Please reference new attachment A attached. 

    Submission Requirements

    • SLBE Policy Compliance (required)

      Small and Local Business Enterprise (SLBE) Policy Compliance

      If this does not apply to your business, please write "Not Applicable or N/A" under Publication Name/Location.

    • Bid Form (required)

      Attach completed Bid Form (Bid Form Section, pages 1-8) 

    • Noncollusion Affidavit Form (required)

      Attached the completed, signed, and notarized Noncollusion Affidavit Form (Bid Form Section, page 9) 

    • Bid Bond (required)

      Attach the completed, signed, and notarized Bid Bond (Bid Bond Section, pages 1-2)

    • Vendor Reference (required)
    • Small Business Enterprise Verification (required)

      Do you qualify as Small Business Enterprise? 

      Small Business Enterprise (SBE): To be considered as a Small Business Enterprise and to encourage maximum participation, the District will accept a Vendor that meets and is certified to the Federal U.S. Small Business Administration (SBA) size standards, or the SBE standards set by the California Department of General Services (DGS). In addition, the District will accept a Vendor’s self-certification of any local agency within the State of California. All certifications are subject to verification. 

      If yes - respondent must attach documentation of Small Business certification.

    • Upload SBE certification. (required)
    • Local Business Enterprise Verification (required)

      Do you qualify as Local Business Enterprise?

      Local Business Enterprise (LBE):  To be considered as a Local Business Enterprise, a Vendor must provide evidence, in the form of a business license, that the Vendor is located at a fixed commercial or residential address where administrative, clerical, professional or other productive work is performed relative to its commercial purpose.  The Vendor must be located either within the District’s service area or, within 25 miles of the District’s Carson headquarters for a minimum of one year.

      Please click HERE to determine if your firm is considered Local, under Small and Local Business Enterprise Program. 

      If yes - respondent must attach current copy of the firm's business license.

    • Upload business license. (required)
    • Sub(s) Small and Local Business Enterprise Verification (required)

      Do you have a Sub Supplier, Subcontractor or Subconsultant that qualifies as SBE or LBE?

      Participation from either SBE or LBE Sub(s) qualify only if at least 30% of the total compensation paid by the District under the terms of the contract are allocated to and received by the SBE or LBE Sub(s).

      The Prime must include the Sub(s) services and compensation in its Price Form. 

      If yes - the Prime (respondent) must attach current copy of the Sub(s) business license and/or SBE certification.

    • Upload Sub(s) business license and/or SBE certification. (required)
    • Made in America Survey (required)

      Are the materials your company provides made in America?

      (Note: This is not a requirement for bidding.)

    • Acceptance (required)

      By selecting Yes below, I, on behalf of the Respondent submitting this Proposal, Quotation, or Bid, hereby acknowledge that I have read and understand the subject solicitation and all its attachments. I further confirm that, by submitting a proposal, quotation, or bid in response to the subject solicitation, the Respondent agrees to all the terms and conditions outlined in the solicitation and its attachments, including but not limited to, the Sample Agreement or the Purchase Order Standard Terms and Conditions, except as specifically identified in any exceptions submitted concurrently herewith.

    • How did you first hear about this project? (required)
    • [FOR NEW VENDORS ONLY] Attach Company W-9
    • [For New Vendor Only] Attach New Vendor Form

      The New Vendor Form is located in the Attachments section, Attachment B. 

    • Project Detail/ Explanation (required)

      Please provide a brief explanation as to the reason and/or the purpose for this procurement. 

    • What is the engineers estimate or budget? (required)

    Questions & Answers

    Q (Engineer's Estimate): Is there an Engineer's Estimate for this proejct?

    A: The engineer's estimate is $1,830,000.


    Q (Filter Underdrain System): Are there any other manufacturer's of the Filter Underdrain System that can utilized for this bid, in addition to AWI?

    A: A Contractor is allowed to submit an alternative to the AWI underdrain system. The alternative will need to be reviewed by West Basin and their design consultant. Following the review, West Basin will then inform the Contractor whether it qualifies as an approved alternative. Alternatives can be submitted for review prior to the bid opening on May 7, without pricing.


    Q (Permit Requirements): Please identify all permits that will be required for this project, including but not limited to building, environmental, excavation, and any agency-specific permits.

    A: No permits from local agencies or municipalities are required for this Project.


    Key dates

    1. April 13, 2026Published
    2. May 7, 2026Responses Due

    AI classification tags

    Frequently asked questions

    SLED stands for State, Local, and Education. These are solicitations issued by state governments, counties, cities, school districts, utilities, and higher education institutions — as opposed to federal agencies.

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