Regulations last checked for updates: Nov 24, 2024

Title 40 - Protection of Environment last revised: Nov 21, 2024
authority: Secs. 301, 304 (b) and (c), 306 (b) and (c), 307(c), of the Federal Water Pollution Control Act, as amended; 33 U.S.C. 1251,1311,1314,1316,1317; 86 Stat. 816
source: 39 FR 23140, June 26, 1974, unless otherwise noted.