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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. The emission factors were developed from emissions data at 11 facilities firing bituminous coal, 15 facilities firing subbituminous coal, and from 2 facilities firing lignite. The factors apply to boilers utilizing Venturi scrubbers, spray dryer absorbers, or wet limestone scrubbers with an electrostatic precipitator (ESP) or fabric filter (FF). In addition, the factors apply to boilers using only an ESP, a FF, or a Venturi scrubber. Firing configurations include pulverized-coal-fired, dry-bottom boilers; pulverized-coal, dry-bottom, tangentially fired boilers; cyclone boilers; and atmospheric fluidized-bed combustors, circulating-bed. ^Emission factor should be applied to coal feed, as fired. To convert from lb/ton to kg/Mg, multiply by 0.5.

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