US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 192 — HEALTH AND ENVIRONMENTAL PROTECTION STANDARDS FOR URANIUM AND THORIUM MILL TAILINGSSubpart C — Implementation192.2340 C.F.R. § 192.23Effective date.Last amended: 2016Year: 2026Length: 11 wordsOfficial source Cite as 40 C.F.R. § 192.23 (2026)Subparts A, B, and C shall be effective March 7, 1983.Previous40 C.F.R. § 192.22