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Electronic Code of Federal Regulations

e-CFR data is current as of November 14, 2019

Title 40Chapter ISubchapter CPart 98Subpart C → Appendix


Title 40: Protection of Environment
PART 98—MANDATORY GREENHOUSE GAS REPORTING
Subpart C—General Stationary Fuel Combustion Sources


Table C-2 to Subpart C of Part 98—Default CH4 and N2O Emission Factors for Various Types of Fuel

Fuel typeDefault CH4 emission factor (kg CH4/mmBtu)Default N2O emission factor (kg N2O/mmBtu)
Coal and Coke (All fuel types in Table C-1)1.1 × 10−021.6 × 10−03
Natural Gas1.0 × 10−031.0 × 10−04
Petroleum Products (All fuel types in Table C-1)3.0 × 10−036.0 × 10−04
Fuel Gas3.0 × 10−036.0 × 10−04
Other Fuels—Solid3.2 × 10−024.2 × 10−03
Blast Furnace Gas2.2 × 10−051.0 × 10−04
Coke Oven Gas4.8 × 10−041.0 × 10−04
Biomass Fuels—Solid (All fuel types in Table C-1, except wood and wood residuals)3.2 × 10−024.2 × 10−03
Wood and wood residuals7.2 × 10−033.6 × 10−03
Biomass Fuels—Gaseous (All fuel types in Table C-1)3.2 × 10−036.3 × 10−04
Biomass Fuels—Liquid (All fuel types in Table C-1)1.1 × 10−031.1 × 10−04

Note: Those employing this table are assumed to fall under the IPCC definitions of the “Energy Industry” or “Manufacturing Industries and Construction”. In all fuels except for coal the values for these two categories are identical. For coal combustion, those who fall within the IPCC “Energy Industry” category may employ a value of 1g of CH4/mmBtu.

[78 FR 71952, Nov. 29, 2013, as amended at 81 FR 89252, Dec. 9, 2016]

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