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Sulfur Dioxide Uncontrolled Emission Factors                      
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Table A1.Sulfur Dioxide Uncontrolled Emission Factors
(Units and Factors)
Fuel, Code, Source and Emission units Combustion System Type/Firing Configuration
Fuel And EIA
Fuel Code		 Source and Tables 
(As appropriate)		 Emissions Units (Lbs = pounds, MMCF = million cubic feet, MG = thousand gallons) Cyclone Boiler Fluidized Bed Boiler Opposed Firing Boiler Spreader Stoker Boiler Tangential Boiler All Other Boiler Types Combustion Turbine Internal Combustion Engine
Agricultural Byproducts (AB) Source: 1 Lbs per ton  0.08 0.01 0.08 0.08 0.08 0.08 NA NA
Blast Furnace Gas (BFG) Sources: 1 (including footnote 7 within source);  2, Table 1.4-2 (including footnote d within source) Lbs per MMCF 0.6 0.06 0.6 0.6 0.6 0.6 0.6 0.6
Bituminous Coal (BIT)* Source: 2, Table 1.1-3 Lbs per ton  38 3.8 38 38 38 38 NA NA
Black Liquor (BLQ) Source: 1 Lbs per ton  ** 7 0.7 7 7 7 7 NA NA
Distillate Fuel Oil (DFO)* Source: 2, Table 3.1-2a, 3.4-1 & 1.3-1 Lbs per MG 157 15.7 157 157 157 157 140 140
Jet Fuel (JF)* Assumed to have emissions similar to DFO. Lbs per MG 157 15.7 157 157 157 157 140 140
Kerosene (KER)* Assumed to have emissions similar to DFO. Lbs per MG 157 15.7 157 157 157 157 140 140
Landfill Gas (LFG) Sources: 1 (including footnote 7 within source);  2, Table 1.4-2 (including footnote d within source) Lbs per MMCF 0.6 0.06 0.6 0.6 0.6 0.6 0.6 0.6
Lignite Coal (LIG)* Source: 2, Table 1.7-1 Lbs per ton  30 3 30 30 30 30 NA NA
Municipal Solid Waste (MSW) Source: 1 Lbs per ton  1.7 0.17 1.7 1.7 1.7 1.7 NA NA
Natural Gas (NG) Sources: 1 (including footnote 7 within source);  2, Table 1.4-2 (including footnote d within source) Lbs per MMCF 0.6 0.06 0.6 0.6 0.6 0.6 0.6 0.6
Other Biomass Gas (OBG) Sources: 1 (including footnote 7 within source);  2, Table 1.4-2 (including footnote d within source) Lbs per MMCF 0.6 0.06 0.6 0.6 0.6 0.6 0.6 0.6
Other Biomass Liquids (OBL)* Source: 1 (including footnotes 3 and 16 within source) Lbs per MG 157 15.7 157 157 157 157 140 140
Other Biomass Solids (OBS) Source: 1 (including footnote 11 within source) Lbs per ton  0.23 0.02 0.23 0.23 0.23 0.23 NA NA
Other Gases (OG) Source: 1 (including footnote 7 within source) Lbs per MMCF 0.6 0.06 0.6 0.6 0.6 0.6 0.6 0.6
Other (OTH) Assumed to have emissions similar to NG. Lbs per MMCF 0.6 0.06 0.6 0.6 0.6 0.6 0.6 0.6
Petroleum Coke (PC)* Source: 1 Lbs per ton  39 3.9 39 39 39 39 NA NA
Propane Gas (PG) Sources: 1 (including footnote 7 within source);  2, Table 1.4-2 (including footnote d within source) Lbs per MMCF 0.6 0.06 0.6 0.6 0.6 0.6 0.6 0.6
Residual Fuel Oil (RFO)* Source: 2, Table 1.3-1 Lbs per MG 157 15.7 157 157 157 157 NA NA
Synthetic Coal (SC)* Assumed to have the emissions similar to Bituminous Coal. Lbs per ton  38 3.8 38 38 38 38 NA NA
Sludge Waste (SLW) Source: 1 (including footnote 11 within source) Lbs per ton ** 2.8 0.28 2.8 2.8 2.8 2.8 NA NA
Subbituminous Coal (SUB)* Source: 2, Table 1.1-3 Lbs per ton 35 3.5 35 38 35 35 NA NA
Tire-Derived Fuel (TDF)* Source: 1 (including footnote 13 within source) Lbs per ton  38 3.8 38 38 38 38 NA NA
Waste Coal (WC)* Source: 1  (including footnote 20 within source) Lbs per ton  30 3 30 30 30 30 NA NA
Wood Waste Liquids (WDL)* Source: 1 (including footnotes 3 and 16 within source) Lbs per MG 157 15.7 157 157 157 157 140 140
Wood Waste Solids (WDS) Source: 1 Lbs per ton  0.29 0.08 0.29 0.08 0.29 0.29 NA NA
Waste Oil (WO)* Source: 2, Table 1.11-2 Lbs per MG 147 14.7 147 147 147 147 NA NA
  Note: * For these fuels, emissions are estimated by multiplying the emissions factor by the physical volume of fuel and the sulfur percentage of the fuel (other fuels do not require the sulfur percentage in the calculation).  Note that EIA data do not provide the sulfur content of TDF.  The value used (1.56 percent) is from U.S. EPA, Control of Mercury Emissions from Coal-Fired Electric Utility Boilers, April 2002, EPA-600/R-01-109, Table A-11 (available at: http://www.epa.gov/appcdwww/aptb/EPA-600-R-01-109A.pdf). 
  ** Although Sludge Waste and Black Liquor consist substantially of liquids, these fuels are measured and reported to EIA in tons.
  Sources: Eastern Research Group, Inc. and E.H. Pechan & Associates, Inc., Documentation for the 2002 Electric Generating Unit National Emissions Inventory, Table 6, September 2004.  Prepared for the U.S. Environmental Protection Agency, Emission Factor and Inventory Group (D205-01), Emissions, Monitoring and Analysis Division, Research Triangle Park; and U.S. Environmental Protection Agency, AP 42, Fifth Edition (Compilation of Air Pollutant Emission Factors, Volume 1: Stationary Point and Area Sources); available at: http://www.epa.gov/ttn/chief/ap42/

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