North Gilsizer Detention Basin Improvements Project

The City of Yuba City, California is soliciting sealed bids for construction of stormwater infrastructure improvements at the North Gilsizer Detention Basin under IFB #1296-CON-26, with proposals due November 5, 2026 at 2:00 p.m. The project is subject to California Labor Code prevailing wage requirements and apprenticeship mandates under Labor Code Section 1777.5. All contractors and subcontractors must be registered with the California Department of Industrial Relations prior to bid submission and maintain active registration throughout the project.

The scope encompasses installation of piezometer(s), a City-furnished trash capture manhole (which the contractor must handle, install, and integrate), an ecology block weir, a concrete retaining wall, and a chain-link swing gate; placement of riprap protection and additional ecology blocks along the existing channel; and all associated labor, materials, equipment, excavation, grading, backfilling, site preparation, and restoration per project plans and specifications.

The engineer's estimate is $477,000. Funding derives from the State of California's Prop 1 Integrated Regional Water Management Round 1 Grant and local City funds. The contract term allows 90 calendar days for completion, with substantial completion required within 60 calendar days.

A non-mandatory site walk is scheduled for October 28, 2026 at 10:00 a.m. at the City's Corporation Yard, 1185 Market Street. Questions are due by 2:00 p.m. on October 30, 2026, submitted electronically through www.publicpurchase.com. Sealed proposals must be delivered to the City Clerk's Office, City Hall, 1201 Civic Center Boulevard. Contact: William Jow, (530) 822-4638, wjow@yubacity.net.