a Data from EPA, Compilation of Air Pollutant Emission Factors, AP-42, Fifth ed., U.S. Environmental Protection Agency, U.S. Government Printing Office, Washington, D.C., January 1995. Tons are short tons. Factors were developed from emissions data from six sites firing bituminous coal, four sights firing subbituminous coal, and one site firing lignite. Factors apply to boilers utilizing both wet limestone scrubbers or spray dryers and an electrostatic precipitator (ESP) or fabric filter (FF). The factors apply to boilers utilizing only an ESP or FF. ^Emission factor should be applied to coal feed, as fired. To convert from lb/ton to lb/MM Btu, multiply by 0.0625. To convert from lb/ton to kg/Mg, multiply by 0.5. Emissions are pounds of pollutant per ton of coal combusted.

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