Regulations last checked for updates: Feb 03, 2026

Title 40 - Protection of Environment last revised: Dec 31, 2026
authority: 31 U.S.C. 3801-3812; Pub. L. 101-410, 104 Stat. 890, 28 U.S.C. 2461 note; Pub. L. 104-134, 110 Stat. 1321, 31 U.S.C. 3701 note
source: 53 FR 15182, Apr. 27, 1988, unless otherwise noted.