ALPINE WASTE SUSTAINS BUSINESS WITH MACK John Gri th is sustaining a business as well as the environment, which is why the president of Alpine Waste & Recycling is converting his entire eet of 50 collection vehicles to Mack ® TerraPro ® models that run on compressed natural gas (CNG). Based in the Denver suburb of Commerce City, Alpine has bought CNG trucks since 2009, saving money and winning praise from environmentalists and mechanics alike. Now the company is taking the next step: converting the entire eet to CNG and partnering with California-based Clean Energy Fuels Corp., which has built a 26-pump fueling station at Alpine’s site. Founded by Gri th in 1999, Alpine is the largest privately held commercial waste and recycling collection company in the Denver area, hauling more th

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