Calcium Thiosulfate Solution

Zone 7 Water Agency is soliciting bids under RFQ-2026-026 for a one-year Blanket Purchase Order for the supply and delivery of Calcium Thiosulfate Solution, used to quench residual ozone during water treatment. The contract period runs from December 1, 2026, through June 30, 2027, with deliveries required within 15 business days of a purchase order. All products must be NSF/ANSI 60 certified and delivered FOB Destination to the Del Valle Water Treatment Plant in Livermore, California, during standard business hours. The solution must be supplied in 275-gallon high-density polyethylene (HDPE) IBC totes, each clearly labeled with the product name, concentration, batch number, and manufacture date. Technical specifications require a concentration of at least 23.5% by weight, a pH between 6.0 and 8.0, and a specific gravity of 1.25 to 1.30 at 20 degrees Celsius. Each delivery must be accompanied by a Certificate of Analysis, a Safety Data Sheet, and a signed packing list. Award will be granted to the lowest responsive and responsible bidder based on total cost and compliance with RFQ requirements, though the agency may also consider provider experience and reputation. Submissions are due via the E-Procurement Portal by November 3, 2026, at 10:00 AM. Bidders must provide a signed Deviation and Exception Form, acknowledge insurance requirements, and certify that they are not excluded from federal programs per 2 CFR Part 180 and 2 CFR 200.214. Payment terms are typically net 30 days.