Many municipal vehicles in the Colorado City of Grand Junction now run on fuel that costs the city just $1.50 a gallon.The city no longer has to worry about oil markets now that the fuel price is locked in with a system at the Persigo Wastewater Treatment Plant that converts biogas into compressed natural gas (CNG) fuel.The CNG system will pay for itself in eight years by providing 400 gallons of fuel per day for city vehicles.No more flaringBuilt in 1984, the 12.5 mgd (design) plant used to flare much of its biogas. “We produce about 128,000 cubic feet of
