Operated by Allied Waste Services, a subsidiary of Republic Services, the H.W. Hill Landfill Gas Project is the fourth largest landfill in the United States, situated near Roosevelt, Washington. An old steel plant was converted into this landfill recycling center which accepts 2 million tons of waste every year. It consists of 5 engines which convert 8.4 megawatts of methane and filter out impurities from it to release clean, compressed form of gas which is further used as a source of providing energy and power. Excessive gas is burnt up to neutralize the effect of greenhouse gases and volatile organic compounds, thereby reducing odor as well. With the increase in the volume of accumulated solid wastes every year, the District plans to establish an additional phase of the Landfill Gas Project so as to assure an increased fuel supply from the same.
