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. This table should be used only when an ultimate analysis is not available. If the ultimate analysis is available, CO2 emissions should be calculated by multiplying the percent carbon (%C) by 72.6. This resultant factor would receive a quality rating of B.

bBased on average carbon contents for each coal type (dry basis) based on extensive sampling of U.S. coals.

cBased on the following equation:

44 ton CO2 lb CO2 1 lb CO2

-monc2 xx2000ioncx22 x 100% = ion%C:

where 44 = molecular weight of CO2, 12 = molecular weight of carbon, and 0.99 = fraction of fuel oxidized during combustion. dTo convert from lb/ton to kg/Mg, multiply by 0.5.

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