Calcium Thiosulfate Solution

The Zone 7 Water Agency is seeking a qualified contractor to supply and deliver Calcium Thiosulfate Solution in 275‑gallon IBC totes for use in water treatment to quench residual ozone. The contract will be awarded as a one‑year Blanket Purchase Order (December 1 2026 – June 30 2027) to the lowest responsive and responsible bidder. Deliveries must occur within 15 business days of each purchase order, during normal business hours, to the agency’s Del Valle Water Treatment Plant in Livermore, CA. Bidders must provide product certifications (NSF/ANSI 60), safety data sheets, certificates of analysis, and meet insurance and qualification requirements. • Product: Calcium Thiosulfate Solution ≥23.5 % w/w, pH 6.0‑8.0, specific gravity 1.25‑1.30, NSF/ANSI 60 certified. • Packaging: 275‑gallon HDPE IBC totes, labeled with batch info. • Delivery: Within 15 business days of PO, lift‑gate equipped vehicles, delivery window 7 AM‑2 PM, Livermore, CA. • Contract term: Dec 1 2026 – Jun 30 2027 (≈ 7 months). • Submission: RFQ posted Oct 13 2026; questions due Oct 22 2026 1:00 PM; quotes due Nov 3 2026 10:00 AM via e‑procurement portal. • Evaluation: Lowest total cost that meets all technical, safety, and qualification criteria. • Required documentation: SDS, COA, insurance certificates, completed vendor questionnaire, and any deviation forms. • Payment: Net 30 days after invoice receipt; invoicing to [email protected].