40 C.F.R. § Table W-7 to Subpart W of Part 98

Current through October 31, 2024
Appendix Table W-7 to Subpart W of Part 98 - [Effective 1/1/2025] Default Methane Emission Factors for Internal Combustion Equipment

Internal combustion equipment typeEmission factor (kg CH 4 /mmBtu)
Reciprocating Engine, 2-stroke lean-burn0.658
Reciprocating Engine, 4-stroke lean-burn0.522
Reciprocating Engine, 4-stroke rich-burn0.045
Gas Turbine0.004

40 C.F.R. §Table W-7 to Subpart W of Part 98

76 FR 80594 , Dec. 23, 2011
89 FR 42327 , 1/1/2025