Table A.2. Nitrogen Oxides Uncontrolled Emission Factors

Fuel, Code, Source and Emission Units Combustion System Type / Firing Configuration
  Cyclone Boiler
Fluidized Bed Boiler		 Opposed Firing Boiler Spreader Stoker Boiler
Fuel EIA Fuel Code Source and Tables (As Appropriate) Emissions Units
Lbs = Pounds
MMCF = Million Cubic Feet
MG = Thousand Gallons		 Dry-Bottom Boilers Dry-Bottom Boilers Dry-Bottom Boilers Wet-Bottom Boilers Dry-Bottom Boilers
Agricultural Byproducts AB Source: 1 Lbs per ton 1.20 1.20 1.20 N/A 1.20
Blast Furnace Gas BFG Sources: 1 (including footnote 7 within source); EIA estimates Lbs per MMCF 15.40 15.40 15.40 N/A 15.40
Bituminous Coal BIT Source: 2, Table 1.1-3 Lbs per ton 33.00 5.00 12.00 31.00 11.00
Black Liquor BLQ Source: 1 Lbs per ton ** 1.50 1.50 1.50 N/A 1.50
Distillate Fuel Oil DFO Source: 2, Tables 3.4-1 & 1.3-1 Lbs per MG 24.00 24.00 24.00 N/A 24.00
Jet Fuel JF Source: 2, Tables 3.1-2a, 3.4-1 & 1.3-1 Lbs per MG 24.00 24.00 24.00 N/A 24.00
Kerosene KER Source: 2, Tables 3.1-2a, 3.4-1 & 1.3-1 Lbs per MG 24.00 24.00 24.00 N/A 24.00
Landfill Gas LFG Sources: 1 (including footnote 7 within source); EIA estimates Lbs per MMCF 72.44 72.44 72.44 N/A 72.44
Lignite Coal LIG Source: 2, Table 1.7-1 Lbs per ton 15.00 3.60 6.30 N/A 5.80
Municipal Solid Waste MSW Source: 1 Lbs per ton 5.00 5.00 5.00 N/A 5.00
Natural Gas NG Source: 2, Tables 1.4-1, 3.1-1, and 3.4-1 Lbs per MMCF 280.00 280.00 280.00 N/A 280.00
Other Biomass Gas OBG Sources: 1 (including footnote 7 within source); EIA estimates Lbs per MMCF 112.83 112.83 112.83 N/A 112.83
Other Biomass Liquids OBL Source: 1 (including footnote 3 within source) Lbs per MG 19.00 19.00 19.00 N/A 19.00
Other Biomass Solids OBS Source: 1 (including footnote 11 within source) Lbs per ton 2.00 2.00 2.00 N/A 2.00
Other Gases OG Sources: 1 (including footnote 7 within source); EIA estimates Lbs per MMCF 152.82 152.82 152.82 N/A 152.82
Other OTH Assumed to have emissions similar to Natural Gas. Lbs per MMCF 280.00 280.00 280.00 N/A 280.00
Petroleum Coke PC Source: 1 (including footnote 8 within source) Lbs per ton 21.00 5.00 21.00 N/A 21.00
Propane Gas PG Sources: 3; EIA estimates Lbs per MMCF 215.00 215.00 215.00 N/A 215.00
Residual Fuel Oil RFO Source: 2, Table 1.3-1 Lbs per MG 47.00 47.00 47.00 N/A 47.00
Synthetic Coal SC Assumed to have the emissions similar to Bituminous Coal. Lbs per ton 33.00 5.00 12.00 31.00 11.00
Sludge Waste SLW Source: 1 (including footnote 11 within source) Lbs per ton ** 5.00 5.00 5.00 N/A 5.00
Subbituminous Coal SUB Source: 2, Table 1.1-3 Lbs per ton 17.00 5.00 7.40 24.00 8.80
Tire-Derived Fuel TDF Source: 1 (including footnote 13 within source) Lbs per ton 33.00 5.00 12.00 31.00 11.00
Waste Coal WC Source: 1 (including footnote 20 within source) Lbs per ton 15.00 3.60 6.30 N/A 5.80
Wood Waste Liquids WDL Source: 1 (including footnote 16 within source) Lbs per MG 5.43 5.43 5.43 N/A 5.43
Wood Waste Solids WDS Source: 1 Lbs per ton 2.51 2.00 2.51 N/A 1.50
Waste Oil WO Source: 2, Table 1.11-2 Lbs per MG 19.00 19.00 19.00 N/A 19.00

 

Fuel, Code, Source and Emission Units Combustion System Type / Firing Configuration
  Tangential Boiler All Other Boiler Types Combustion Turbine
Internal Combustion Engine
Fuel EIA Fuel Code Source and Tables (As Appropriate) Emissions Units
Lbs = Pounds
MMCF = Million Cubic Feet
MG = Thousand Gallons		 Dry-Bottom Boilers Wet-Bottom Boilers Dry-Bottom Boilers Wet-Bottom Boilers Dry-Bottom Boilers Dry-Bottom Boilers
Agricultural Byproducts AB Source: 1 Lbs per ton 1.20 N/A 1.20 N/A N/A N/A
Blast Furnace Gas BFG Sources: 1 (including footnote 7 within source); EIA estimates Lbs per MMCF 15.40 N/A 15.40 N/A 30.40 256.55
Bituminous Coal BIT Source: 2, Table 1.1-3 Lbs per ton 10.00 14.00 12.00 31.00 N/A N/A
Black Liquor BLQ Source: 1 Lbs per ton ** 1.50 N/A 1.50 N/A N/A N/A
Distillate Fuel Oil DFO Source: 2, Tables 3.4-1 & 1.3-1 Lbs per MG 24.00 N/A 24.00 N/A 122.00 443.80
Jet Fuel JF Source: 2, Tables 3.1-2a, 3.4-1 & 1.3-1 Lbs per MG 24.00 N/A 24.00 N/A 118.00 432.00
Kerosene KER Source: 2, Tables 3.1-2a, 3.4-1 & 1.3-1 Lbs per MG 24.00 N/A 24.00 N/A 118.00 432.00
Landfill Gas LFG Sources: 1 (including footnote 7 within source); EIA estimates Lbs per MMCF 72.44 N/A 72.44 N/A 144.00 1,215.22
Lignite Coal LIG Source: 2, Table 1.7-1 Lbs per ton 7.10 N/A 6.30 N/A N/A N/A
Municipal Solid Waste MSW Source: 1 Lbs per ton 5.00 N/A 5.00 N/A N/A N/A
Natural Gas NG Source: 2, Tables 1.4-1, 3.1-1, and 3.4-1 Lbs per MMCF 170.00 N/A 280.00 N/A 328.00 2,768.00
Other Biomass Gas OBG Sources: 1 (including footnote 7 within source); EIA estimates Lbs per MMCF 112.83 N/A 112.83 N/A 313.60 2,646.48
Other Biomass Liquids OBL Source: 1 (including footnote 3 within source) Lbs per MG 19.00 N/A 19.00 N/A N/A N/A
Other Biomass Solids OBS Source: 1 (including footnote 11 within source) Lbs per ton 2.00 N/A 2.00 N/A N/A N/A
Other Gases OG Sources: 1 (including footnote 7 within source); EIA estimates Lbs per MMCF 152.82 N/A 152.82 N/A 263.82 2,226.41
Other OTH Assumed to have emissions similar to Natural Gas. Lbs per MMCF 170.00 N/A 280.00 N/A 328.00 2,768.00
Petroleum Coke PC Source: 1 (including footnote 8 within source) Lbs per ton 21.00 N/A 21.00 N/A N/A N/A
Propane Gas PG Sources: 3; EIA estimates Lbs per MMCF 215.00 N/A 215.00 N/A 330.75 2,791.22
Residual Fuel Oil RFO Source: 2, Table 1.3-1 Lbs per MG 32.00 N/A 47.00 N/A N/A N/A
Synthetic Coal SC Assumed to have the emissions similar to Bituminous Coal. Lbs per ton 10.00 14.00 12.00 31.00 N/A N/A
Sludge Waste SLW Source: 1 (including footnote 11 within source) Lbs per ton ** 5.00 N/A 5.00 N/A N/A N/A
Subbituminous Coal SUB Source: 2, Table 1.1-3 Lbs per ton 7.20 N/A 7.40 24.00 N/A N/A
Tire-Derived Fuel TDF Source: 1 (including footnote 13 within source) Lbs per ton 10.00 14.00 12.00 31.00 N/A N/A
Waste Coal WC Source: 1 (including footnote 20 within source) Lbs per ton 7.10 N/A 6.30 N/A N/A N/A
Wood Waste Liquids WDL Source: 1 (including footnote 16 within source) Lbs per MG 5.43 N/A 5.43 N/A N/A N/A
Wood Waste Solids WDS Source: 1 Lbs per ton 2.51 N/A 2.51 N/A N/A N/A
Waste Oil WO Source: 2, Table 1.11-2 Lbs per MG 19.00 N/A 19.00 N/A N/A N/A

Notes:
** Although Sludge Waste and Black Liquor consist substantially of liquids, these fuels are measured and reported to EIA in tons.

Sources:
1. 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
2. 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/
3. U.S. Environmental Protection Agency, Factor Information Retrieval (FIRE) Database, Version 6.25; available at: http://www.epa.gov/ttn/chief/software/fire/index.html