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aData 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. To convert from lb/ton to kg/Mg, multiply by 0.5. Emission factors are pounds of pollutant per ton of coal combusted as fired. ESP, electrostatic precipitator. k Expressed as aerodynamic equivalent diameter. cEstimated control efficiency for multiple cyclones is 80%. d Insufficient data.

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