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Chapter 10 from 'Waste Management, In Climate Change 2007' discusses the greenhouse gas emissions of various waste disposal systems. Courtesy of the Intergovernmental Panel on Climate Change.
This annual report shows that waste-to-energy facilities receive the largest amount of solid waste in the Commonwealth, while landfills continue to decline in number.
This fact sheet from the U of Michigan's Center for Sustainable Systems provides statistics on the number of sanitary lanfills in the U.S., as well as information on the tonnage and types of waste committed to landfills.