Description
The City and County of San Francisco is seeking a qualified contractor to provide a complete liner replacement for the 50,000‑gallon water tank at Camp Mather, Groveland, CA. The scope includes cleaning, surface preparation, installation of a 45 mil reinforced polypropylene liner with geotextile underlayment, pipe and manway modifications, disinfection to potable‑water standards, and a one‑year warranty. The contract is capped at $1,170,000, with an estimated cost of $142,750 for this specific task, and must be completed within 45 days to substantial completion and an additional 15 days to final completion. Bidders must hold a California A or C‑57 contractor license, be a certified City supplier, have current DIR registration, furnish performance and payment bonds, and meet strict waste‑diversion and safety requirements.
• Install a custom‑fit reinforced polypropylene liner in a 23‑ft‑diameter, 16‑ft‑tall water tank (roof not removable, access via ground‑level port‑hole).
• Complete all work within a total of 60 calendar days, with liquidated damages for delays.
• Provide required subcontractor disclosures, safety pre‑qualification, and 75 % waste‑diversion documentation.
• Submit a single‑line “Base bid” quote (no alternates) by 3 Feb 2026 2:30 PM via email.