Windsor SECONDARY TREATMENT SYSTEM UPGRADES PROJECT

Bid Details for Windsor SECONDARY TREATMENT SYSTEM UPGRADES PROJECT

Project

Owner

City of Windsor

Bid Time

03/02/2026 2:00 pm

Description

General Work Description: The work consists of dewatering the Water Reclamation Facility’s
aeration basin, further excavation and installation of a new concrete aeration basin facility with a flow
splitting structure, air lines, diffusers, a mixing system, a surface wasting pumping system, and a high
flow return pump connected to the adjacent high flow storage pond. In conjunction with the new
aeration basin, a new blower building with internal blowers will be constructed with a separate
electrical control building. Additional work includes a separate carbon feed building with internal
tanks and chemical metering pumps, a below grade secondary clarifier weir flow splitting structure,
and relocation of a concrete sand filter high flow diversion structure.

Disadvantaged Business Enterprise (DBE) participation is encouraged.

Duration: 482 working days with Intermediate Milestones

Location

Windsor, CA

Amount

$64,300,000

Estimator

Anna Stein

510 234-0926
annas@overaa.com

Danny Holdren

510 234-0926
dannyh@overaa.com

Larry Etcheverry

510 234-0926
larrye@overaa.com

Matt Starke

Adrian Reyes

510-234-0926

Bid Walk

A mandatory pre-bid site walk through is scheduled for Wednesday, January 14, 2026 at 10:00 am.

Bidders and interested parties shall meet at the Windsor Corporation Yard located at 8400 Windsor Road, Building 100, Windsor, CA 95492

A second bid walk date of January 28, 2026 at 10:00 A.M. at 8400 Windsor Road, Windsor, CA 95492-0100. Attendance at either mandatory bid walk will satisfy this requirement of qualified bidders.

Requirements

Funding for this project may be provided in full or part through an agreement with the United States Environmental Protection Agency (EPA) Water Infrastructure Finance Innovation Act (WIFIA) program. Special attention should be directed to Section 9 of the Special Provisions, which outlines requirements for Contractors and Subcontractors based on this funding source.

Availability

Electronic copies of the Contract Documents, including Proposal Forms, Plans, and Specifications will be available at no charge at the Town of Windsor website (https://www.townofwindsor.com/bids.aspx). Bidders will need to fill out a short informational form in order to gain access to the bid documents.