40 C.F.R. § Table W-4B to Subpart W of Part 98

Current through October 31, 2024
Appendix Table W-4B to Subpart W of Part 98 - [Removed effective 1/1/2025] Default Total Hydrocarbon Population Emission Factors for Underground Natural Gas Storage

Table W-4B to Subpart W of Part 98-Default Total Hydrocarbon Population Emission Factors for Underground Natural Gas Storage

Underground natural gas storage Emission factor
(scf/hour/component)
Population Emission Factors-Storage Wellheads, Gas Service
Connector0.01
Valve0.1
Pressure Relief Valve0.17
Open-Ended Line0.03
Population Emission Factors-Other Components, Gas Service
Low Continuous Bleed Pneumatic Device Vents11.37
High Continuous Bleed Pneumatic Device Vents118.20
Intermittent Bleed Pneumatic Device Vents12.35

1 Emission Factor is in units of "scf/hour/device."

40 C.F.R. §Table W-4B to Subpart W of Part 98

81 FR 86517 , Nov. 30, 2016
81 FR 86517 , 1/1/2017; 89 FR 42325 , 1/1/2025