Regulations last checked for updates: May 18, 2024

Title 40 - Protection of Environment last revised: May 16, 2024
Appendix - Table W-1C to Subpart W of Part 98—Default Average Component Counts For Major Crude Oil Production Equipment
Link to an amendment published at 89 FR 42323, May 14, 2024.
Major equipment Valves Flanges Connectors Open-ended lines Other components
Eastern U.S.
Wellhead510401
Separator6121000
Heater-treater8122000
Header510400
Western U.S.
Wellhead510401
Separator6121000
Heater-treater8122000
Header510400
source: 74 FR 56374, Oct. 30, 2009, unless otherwise noted.