Regulations last checked for updates: Jan 18, 2025

Title 40 - Protection of Environment last revised: Dec 30, 2025
authority: Section 504, Title 5 U.S.C., as amended by sec. 203(a)(1), Equal Access to Justice Act (Title 2 of Pub. L. 96-481, 94 Stat. 2323)
source: 48 FR 39936, Sept. 2, 1983, unless otherwise noted.