The company that operates the largest trucking fleet in the waste industry is fueling more and more trucks with so-called trash gas. On Tuesday, Houston-based Waste Management Inc. will add its 1,000th truck fueled with natural gas. Powered with captured and converted methane gas from the company's Altamont, Calif., landfill, the new truck will service Long Beach, picking up recyclables.

North America's largest waste services company, Waste Management operates almost 300 landfills and runs 22,000 big trucks daily, 720 of which are in Southern California. All of the trucks Waste Management runs out of its L.A. Metro fueling station are powered with liquefied natural gas (LNG) derived from the methane generated through decomposition of organic waste in its Altamont landfill. Since November 2009, the landfill has been generating as much as 13,000 gallons of LNG per day.