UNSPSC 15111502: Methane

UNSPSC 15111502 Methane is a Commodity code covering the supply and monitoring of methane gas and detection systems for operational, testing, and environmental compliance purposes at state and local facilities. State and local governments buy methane primarily as a fuel input for compressed natural gas (CNG) vehicle fleets and as a subject of air-quality and landfill emissions monitoring. The issuing bodies include regional transit authorities, state transportation departments, county environmental agencies, and municipal water and wastewater utilities. The Orange County Transportation Authority (OCTA) appears as a repeat buyer, soliciting both test and operation gases for CNG buses and facilities and methane detection system service and maintenance across five transit facilities.

Recent activity spans California and Washington, with the most current opportunities including OCTA's IFB 260542 for test and operation gases (bids due October 27, 2026, budget $100,000 over two years), OCTA's earlier IFB 250322 for methane detection system service and maintenance ($260,000 over four years), Sacramento County's RFP 2026-PURB RFP-0083 for methane surface emissions monitoring at Kiefer Landfill using alternative technologies such as drones (due September 16, 2026), and the City of Phoenix Water Services Department's IFB-27-0435 for atmospheric monitoring instruments detecting methane and other hazardous gases at water and wastewater facilities (due September 4, 2026). OCTA contracts require Davis-Bacon prevailing wage compliance and DBE participation. Pricing in these solicitations typically must be submitted on a firm-fixed or F.O.B. destination basis, with insurance and safety compliance mandatory.