US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 264 — STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIESSubpart K — Surface Impoundments264.22040 C.F.R. § 264.220Applicability.Last amended: 2016Year: 2026Length: 30 wordsOfficial source Cite as 40 C.F.R. § 264.220 (2026)The regulations in this subpart apply to owners and operators of facilities that use surface impoundments to treat, store, or dispose of hazardous waste except as § 264.1 provides otherwise.Cross-references to the CFR264.1Next40 C.F.R. § 264.221