TRWRP Sulfuric Acid Day Tank Area Rehabilitation and Replacement Project

West Basin Municipal Water District is requesting bids on the TRWRP Sulfuric Acid Day Tank Area Rehabilitation and Replacement Project at the Torrance Refinery Water Recycling Plant in Torrance, California, with electronic bids due July 30, 2026 at 2:00 PM through the District's OpenGov portal. A mandatory pre-bid meeting is scheduled for July 22, 2026 at 10:00 AM via Microsoft Teams, with an optional on-site job walk immediately following at 11:00 AM; attendance at the mandatory pre-bid meeting is required for all prospective prime contractors to be eligible to submit a bid.

Bidders must hold a California Contractors' License Class A. The District's Small and Local Business Enterprise Program applies. The scope includes removal and replacement of concrete slabs and walls in the existing sulfuric acid day tank storage area, with deliverables encompassing mobilization/demobilization, temporary sulfuric acid system installation, disassembly and reinstallation of existing equipment, secondary containment concrete demolition and replacement with coatings, and startup and commissioning.

Substantial completion is required within 150 calendar days from Notice-to-Proceed, with final completion within 180 calendar days. Liquidated damages of $5,000 per calendar day apply for delays beyond the substantial completion deadline. Work hours are limited to Monday through Friday, 6:30 AM to 3:00 PM; weekend and holiday work is prohibited unless approved in advance. All work is subject to prevailing wage requirements. All federal, state, and local sales and use taxes must be included in the bid price.

Bid security must equal ten percent of the bid amount. The successful bidder must furnish both performance and payment bonds equal to one hundred percent of the contract price. Retainage is withheld at five percent of monthly progress payments, with ninety-five percent payment upon invoice submission. The District will award the contract to the lowest responsive and responsible bidder and will make award determinations within 45 calendar days after bid opening.