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RUMBLES - September 2015

feature 16 | RUMBLES SEPTEMBER 2015 Grand Junction’s Persigo Wastewater Treatment Plant produces about 120,000 cubic feet per day of methane gas from these anaerobic digesters, which fuels vehicles including buses, dump trucks (see top left), and street sweepers. 䤀渀渀漀瘀愀琀椀瘀攀 圀愀琀攀爀 匀漀氀甀琀椀漀渀猀 烰  䔀渀最椀渀攀攀爀椀渀最 烰  匀瀀愀琀椀愀氀 䐀愀琀愀 烰  䄀搀瘀愀渀挀攀搀 吀攀挀栀渀漀氀漀最椀攀猀 䄀氀戀甀焀甀攀爀焀甀攀 䐀攀渀瘀攀爀 䰀愀猀 䌀爀甀挀攀猀 眀眀眀⸀戀栀椀渀挀⸀挀漀洀 of Grand Junction, the Colorado Energy Office CNG Initiative, the Colorado Depart-ment of Local Affairs/ CEO New Energy Communities Initia-tive, the U.S. Depart-ment of Energy, an Energy Efficiency and Conservation Block Grant, and a private contribution from Encana, a natural gas producer in Colorado. The fueling station included 10 slow-fill stations for fueling city vehicles as well as a public fast-fill station operated by a private contractor. The City of Grand Junction recently com-pleted an expansion of the fueling station, adding 10 more slow-fill connections as well as additional compressors and storage to meet the growing demand. Since the first purchase of CNG vehicles in 2011, the city has added to the CNG fleet each year as vehicles come up for replace-ment. There are currently 28 CNG vehicles: one sedan, one street sweeper, six dump trucks, 10 solid waste trucks, four utility trucks, four half-ton pickup trucks, and two one-ton pickup trucks. The 2015 budget includes the purchase of 10 additional CNG vehicles: two sedans, four dump trucks, three half-ton pickup trucks, and one one-ton pickup truck, bringing the CNG fleet to 38 vehicles. In addition, more than 200 additional city vehicles have been ear-marked for future replacement with CNG units. Step 3 During fall 2014, the City of Grand Junction contracted with BioCNG, LLC to design a system to capture, collect, and purify Continued on page 18


RUMBLES - September 2015
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