Regulations last checked for updates: Feb 21, 2025

Title 40 - Protection of Environment last revised: Nov 21, 2025
authority: Sec. 801, Pub. L. 102-486, 106 Stat. 2921, 42 U.S.C. 10141 n
source: 66 FR 32132, June 13, 2001, unless otherwise noted.