Table A.2. Nitrogen Oxides Uncontrolled Emission Factors

Fuel, Code, Source and Emission Units Combustion System Type / Firing Configuration
 
  Tangential Boiler All Other Boiler Types  
Fuel EIA Fuel Code Source and Tables (As Appropriate)
Emissions Units
Lbs = Pounds
MMCF = Million Cubic Feet
MG = Thousand Gallons
Cyclone Firing Boiler Fluidized Bed Firing Boiler Stoker Boiler Dry-Bottom Boilers Wet-Bottom Boilers Dry-Bottom Boilers Wet-Bottom Boilers Combustion Turbine Internal Combustion Engine
Distillate Fuel Oil DFO Source: 2, Tables 1.3-1, 3.1-1, & 3.4-1 Lbs per MG 24.00 24.00 24.00 24.00 24.00 24.00 24.00 122.00 443.80
Jet Fuel JF Source: 2, Tables 1.3-1, 3.1-1, & 3.4-1 Lbs per MG 24.00 24.00 24.00 24.00 24.00 24.00 24.00 118.80 432.00
Kerosene KER Source: 2, Tables 1.3-1, 3.1-1, & 3.4-1 Lbs per MG 24.00 24.00 24.00 24.00 24.00 24.00 24.00 118.80 432.00
Other Biomass Liquids OBL Source: 1 (including footnote 3 within source); EIA estimates Lbs per MG 19.00 19.00 19.00 19.00 19.00 19.00 19.00 112.30 408.30
Residual Fuel Oil RFO Source: 2, Table 1.3-1; EIA estimates Lbs per MG 47.00 47.00 47.00 32.00 32.00 47.00 47.00 131.70 479.00
Wood Waste Liquids WDL Source: 1 (including footnote 16 within source); EIA estimates Lbs per MG 5.43 5.43 5.43 5.43 5.43 5.43 5.43 230.50 838.10
Waste Oil WO Source: 2, Table 1.11-2; EIA estimates Lbs per MG 19.00 19.00 19.00 19.00 19.00 19.00 19.00 92.20 335.20
Blast Furnace Gas BFG Sources: 1 (including footnote 7 within source); EIA estimates Lbs per MMCF 15.40 15.40 15.40 15.40 15.40 15.40 15.40 30.40 256.55
Landfill Gas LFG Sources: 1 (including footnote 7 within source); EIA estimates Lbs per MMCF 72.44 72.44 72.44 72.44 72.44 72.44 72.44 144.00 1,215.22
Natural Gas NG Source: 2, Tables 1.4-1, 3.1-1, and 3.4-1 Lbs per MMCF 280.00 280.00 280.00 170.00 170.00 280.00 280.00 328.00 2,768.00
Other Biomass Gas OBG Sources: 1 (including footnote 7 within source); EIA estimates Lbs per MMCF 112.83 112.83 112.83 112.83 112.83 112.83 112.83 313.60 2,646.48
Other Gases OG Sources: 1 (including footnote 7 within source); EIA estimates Lbs per MMCF 152.82 152.82 152.82 152.82 152.82 152.82 152.82 263.82 2,226.41
Other OTH Assumed to have emissions similar to Natural Gas. Lbs per MMCF 280.00 280.00 280.00 170.00 170.00 280.00 280.00 328.00 2,768.00
Propane Gas PG Sources: 3; EIA estimates Lbs per MMCF 522.26 522.26 522.26 522.26 522.26 522.26 522.26 803.36 6,779.57
Synthesis Gas from Petroleum Coke SGC Assumed to have emissions similar to Natural Gas Lbs per MMCF 280.00 280.00 280.00 170.00 170.00 280.00 280.00 328.00 2,768.00
Coal-Derived Synthesis Gas SGP Assumed to have emissions similar to Natural Gas Lbs per MMCF 280.00 280.00 280.00 170.00 170.00 280.00 280.00 328.00 2,768.00
Agricultural Byproducts AB Source: 1 Lbs per ton 1.20 1.20 1.20 1.20 1.20 1.20 1.20 N/A N/A
Bituminous Coal BIT Source: 2, Table 1.1-3 Lbs per ton 33.00 5.00 11.00 10.00 14.00 12.00 31.00 N/A N/A
Lignite Coal LIG Source: 2, Table 1.7-1 Lbs per ton 15.00 3.60 5.80 7.10 7.10 6.30 6.30 N/A N/A
Municipal Solid Waste MSW Source: 1 Lbs per ton 5.00 5.00 5.00 5.00 5.00 5.00 5.00 N/A N/A
Other Biomass Solids OBS Source: 1 (including footnote 11 within source) Lbs per ton 2.00 2.00 2.00 2.00 2.00 2.00 2.00 N/A N/A
Petroleum Coke PC Source: 1 (including footnote 8 within source) Lbs per ton 21.00 5.00 21.00 21.00 21.00 21.00 21.00 N/A N/A
Subbituminous Coal SUB Source: 2, Table 1.1-3 Lbs per ton 17.00 5.00 8.80 7.20 7.20 7.40 24.00 N/A N/A
Tire-Derived Fuel TDF Source: 1 (including footnote 13 within source) Lbs per ton 33.00 5.00 11.00 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 15.00 3.60 5.80 7.10 7.10 6.30 6.30 N/A N/A
Wood Waste Solids WDS Source: 1 Lbs per ton 2.51 2.00 1.50 2.51 2.51 2.51 2.51 N/A N/A
Black Liquor BLQ Source: 1 Lbs per ton ** 1.50 1.50 1.50 1.50 1.50 1.50 1.50 N/A N/A
Sludge Waste SLW Source: 1 (including footnote 11 within source) Lbs per ton ** 5.00 5.00 5.00 5.00 5.00 5.00 5.00 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