P = preliminary data.
Note: Data in this table are revised from the data contained in the previous EIA report, Emissions of Greenhouse Gases in the United States 1997, DOE/EIA-0573(97) (Washington, DC, October 1998).
Sources: Municipal solid waste landfilled from Biocycle, "Nationwide Survey: The State of Garbage in America" (1989-1996). Emissions calculations based on S.A. Thorneloe et al., "Estimate of Methane Emissions from U.S. Landfills," Prepared for the U.S. Environmental Protection Agency, Office of Research and Development, in departmental review (April 1994), and D. Augenstein, "The Greenhouse Effect and U.S. Landfill Methane," Global Environmental Change (December 1992), pp. 311-328. Methane recovered and flared from S.A. Thorneloe, "Landfill Gas Recovery Utilization--Options and Economics," presented at the Sixteenth Annual Conference by the Institute of Gas Technology on Energy from Biomass and Wastes, Orlando, Florida (March 5, 1992); J. Pacey, "Methane Recovery from Landfills," presented at the 1995 Greenhouse Gas Emissions and Mitigation Research Symposium, Washington, DC (June 27-29, 1995); and M. McGuigan and W.G. Vogt, SCS Engineers, "Greenhouse Gas Emission Reductions From U.S. Landfill Gas Utilization Projects: Landfills to the Rescue," presented at the 22nd Annual Landfill Gas Symposium (Orlando, FL, March 1999).