Regulations last checked for updates: Nov 25, 2024

Title 40 - Protection of Environment last revised: Nov 21, 2024
All TitlesTitle 40Chapter IPart 98Subpart WAppendix - Table W-2 to Subpart W of Part 98—Default Total Hydrocarbon Emission Factors for Onshore Natural Gas Processing
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Appendix - Table W-2 to Subpart W of Part 98—Default Total Hydrocarbon Emission Factors for Onshore Natural Gas Processing
Link to an amendment published at 89 FR 42324, May 14, 2024.
Onshore natural gas processing plants Emission factor (scf/hour/
component)
Leaker Emission Factors—Compressor Components, Gas Service
Valve 114.84
Connector5.59
Open-Ended Line17.27
Pressure Relief Valve39.66
Meter19.33
Leaker Emission Factors—Non-Compressor Components, Gas Service
Valve 16.42
Connector5.71
Open-Ended Line11.27
Pressure Relief Valve2.01
Meter2.93

1 Valves include control valves, block valves and regulator valves.

[76 FR 80592, Dec. 23, 2011]
authority: 42 U.S.C. 7401-7671q.
source: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.
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