Code of Federal Regulations > Title 40 > Chapter I > Part 63 > Subpart U > Appendix - Table 3 to Subpart U of Part 63—Group 1 Storage Vessels at Existing Affected Sources

Regulations last checked for updates: Jan 18, 2025

Title 40 - Protection of Environment last revised: Dec 30, 2025

Appendix - Table 3 to Subpart U of Part 63—Group 1 Storage Vessels at Existing Affected Sources

Vessel capacity (cubic meters)	Vapor pressure ^a (kilopascals)
75 ≤capacity <151	≥13.1
151 ≤capacity	≥5.2

^a Maximum true vapor pressure of total organic HAP at storage temperature.

authority: 42 U.S.C. 7401

source: 57 FR 61992, Dec. 29, 1992, unless otherwise noted.