Refrigerated Liquid Carbon Dioxide

The City of Tempe, Arizona, Water Utilities Division is issuing a Request for Proposal to procure refrigerated liquid carbon dioxide at 99.5% purity for use in drinking water production. The procurement requires delivery to two facilities: the South Water Treatment Plant (6000 South Price Road) with an estimated annual usage of 900 tons and a 90-ton storage tank, and the Johnny G. Martinez Water Treatment Plant (255 East Marigold Lane) with an estimated annual usage of 220 tons and a 50-ton storage tank, for a combined annual requirement of approximately 1,160 tons. The supplied product must meet or exceed AWWA B510 standards and ANSI/NSF Standard 60 specifications for drinking water treatment chemicals, be delivered in bulk trucks with certified weight tickets, and be accompanied by laboratory analysis certificates upon request. Deliveries are restricted to Monday through Friday between 7:00 a.m. and 3:00 p.m., though the supplier must maintain 24-hour emergency delivery capability. The RFP was posted February 5, 2026, with an inquiry deadline of February 19, 2026, at 5:00 p.m. Arizona time, and proposal submissions due March 5, 2026, at 3:00 p.m. Arizona time through the City's Bonfire procurement portal. Pricing proposals must include unit cost per ton, freight charges calculated on 85-ton shipments to the South Water Treatment Plant, and any additional costs, with all pricing to remain firm for 12 months. The initial contract term is one year with the City's option to extend for four additional one-year periods. Evaluation criteria include firm capabilities and resources (10 points), proposed product quality and specification compliance (30 points), experience and references (20 points), pricing and price stability (30 points), acceptance of RFP terms (5 points), and overall responsiveness (5 points).

Respondents must provide proof of NSF certification for their product and maintain all applicable federal, state, and local licenses while complying with OSHA safety requirements. Contractors are required to carry commercial general liability insurance of at least $1,000,000 per occurrence with a $2,000,000 aggregate limit, workers' compensation insurance, and automobile liability coverage of $1,000,000. All proposed vendors must demonstrate compliance with antidiscrimination ordinances, House Bill 2488 regarding Uyghur forced labor prevention, and E-Verify requirements. Payment will be made within 30 days of invoice receipt and approval via check or procurement card. No specific set-aside designations, incumbent vendors, or budget range information is identified in the procurement documentation. Non-conforming deliveries must be removed and replaced at the contractor's expense within five days.