SLED Opportunity · CALIFORNIA · IRVINE RANCH WATER DISTRICT

    Syphon Reservoir Improvement Project

    Issued by Irvine Ranch Water District
    localBidIrvine Ranch Water DistrictSol. 03808
    Closed
    STATUS
    Closed
    due Mar 17, 2026
    PUBLISHED
    Jan 20, 2026
    Posting date
    JURISDICTION
    Irvine Ranch
    local
    NAICS CODE
    237990
    AI-classified industry

    AI Summary

    The Syphon Reservoir Improvement Project in Irvine, CA involves demolition of an existing reservoir and construction of a new earth fill embankment dam, water treatment facilities, and associated infrastructure. Estimated bid value is $322M. Bids accepted only from prequalified bidders.

    Opportunity details

    Solicitation No.
    03808
    Type / RFx
    Bid
    Status
    Bidding
    Level
    local
    Published Date
    January 20, 2026
    Due Date
    March 17, 2026
    NAICS Code
    237990AI guide
    Agency
    Irvine Ranch Water District

    Description

    The project includes, but is not limited to, demolition of the existing 59-foot-tall, 535-acre-foot capacity reservoir and construction of a new 138 foot-tall earth fill embankment dam and a 5,000-acre-foot reservoir; construction of a new Inlet/Outlet (I/O) Works consisting of several interconnected facilities composed of the I/O structure, I/O pipeline, emergency outlet structure, and dam control building; civil site work, including utilities; construction of new accesses roads to provide access to the site, spillway, dam control building, and dam crest; installation of new SCE service equipment and switchboards; installation of new electrical equipment, including the Motor Control Center (MCC), Programmable Logic Controller (PLC), and uninterruptible power supply (UPS); construction of new water treatment facilities, including chlorination & dechlorination storage and feed facility, algae facilities, including chlorination and dichlorination storage and feed facility, algae filtration facility, filter backwash system and backwash waste equalization tank, in-reservoir aeration system, and associated pumping and piping system. Estimated Bid Value: $322,000,000.00 Pre-Bid Meeting Information: Yes Online Q&A: Yes Location Information: Department: Engineering Address: IRWD Sand Canyon Headquarters, 15600 Sand Canyon Avenue, Irvine, CA 92618 County: Orange Special Notices: Bids will be accepted for this Project only from the prequalified bidders on the Project Bidders List. Prequalification to be placed on the Project Bidders List for this Project is closed.

    Key dates

    1. January 20, 2026Published
    2. March 17, 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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