['Air Programs']

['Greenhouse Gases']

04/18/2025

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Air Programs - Greenhouse Gases

Table W-7 to Subpart W of Part 98—Default Methane Emission Factors for Internal Combustion Equipment

RegSense Greenhouse Gases CFR Regulations Environmental Protection Agency (EPA)Focus Area USA English Air Programs CFR Appendix

Table W-7 to Subpart W of Part 98—Default Methane Emission Factors for Internal Combustion Equipment
Internal combustion equipment type	Emission factor (kg CH ₄ /mmBtu)
Reciprocating Engine, 2-stroke lean-burn	0.658
Reciprocating Engine, 4-stroke lean-burn	0.522
Reciprocating Engine, 4-stroke rich-burn	0.045
Gas Turbine	0.004

[75 FR 74514, Nov. 30, 2010; 76 FR 80594, Dec. 23, 2011; 89 FR 42327, May 14, 2024]

['Air Programs']

['Greenhouse Gases']

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