Regulations last checked for updates: Jan 30, 2025

Title 40 - Protection of Environment last revised: Nov 08, 2025
  • Subpart Ca - Subpart Ca [Reserved]
  • Subpart FF - Subpart FF [Reserved]
authority: 42 U.S.C. 7401
source: 36 FR 24877, Dec. 23, 1971, unless otherwise noted.