Redwood Drive Sewer Replacement

The Redwood Drive Sewer Replacement project, solicitation number CS26-09, is a CUPCCAA bid issued by the Ironhouse Sanitary District in Contra Costa County, California. The scope of work involves the removal and replacement-in-place of a 6-inch PVC gravity sewer and the reconnection of all existing sewer laterals along Redwood Drive between structures OT328 and OT329. The selected contractor is responsible for providing all labor, materials, equipment, and permits, including critical components such as temporary bypass pumping with a design flow of 330 gpm, traffic control, excavation support, and site restoration. All work must comply with state prevailing wage laws, CAL OSHA safety regulations, and specific technical standards including ASTM and Caltrans specifications. Bids must be submitted electronically via the OpenGov portal by October 19, 2026. Qualified contractors must be approved on the District's Informal CUPCCAA Contractors List or submit a registration form prior to bidding. Required submission documents include a signed bid form, a bidder's bond or security equal to at least 10 percent of the total bid price, a non-collusion declaration, and certifications regarding a drug-free workplace, debarment, and workers' compensation. Additionally, contractors must list all subcontractors performing more than 0.5 percent of the work and provide proof of liability insurance with a minimum limit of 1 million dollars. The awarded contractor will be required to furnish performance and payment bonds before commencing work.