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Electronic Code of Federal Regulations

e-CFR data is current as of December 5, 2019

Title 40Chapter ISubchapter CPart 98Subpart W → Appendix


Title 40: Protection of Environment
PART 98—MANDATORY GREENHOUSE GAS REPORTING
Subpart W—Petroleum and Natural Gas Systems


Table W-4B to Subpart W of Part 98—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 storageEmission 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

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

[81 FR 86517, Nov. 30, 2016]

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