1. Regulations
  2. title 40
  3. chapter I-i22
  4. part 98
  5. subpart W
  6. appendix-i 2

- Table W-3 to Subpart W of Part 98—Default Total Hydrocarbon Population Emission Factors

Industry segment Source type/component Emission factor
(scf total hydrocarbon/
hour/component) 		Population Emission Factors—Storage Wellheads, Gas ServiceUnderground natural gas storageConnector0.01 Valve0.1 Pressure Relief Valve0.17 Open-Ended Line0.03
[89 FR 42325, May 14, 2024]

AUTHORITY: 42 U.S.C. 7401-7671q.

SOURCE: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.