US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 62 — APPROVAL AND PROMULGATION OF STATE PLANS FOR DESIGNATED FACILITIES AND POLLUTANTSSubpart D — Arizona62.63240 C.F.R. § 62.632Effective date.Last amended: 2016Year: 2026Length: 13 wordsOfficial source Cite as 40 C.F.R. § 62.632 (2026)The effective date of EPA approval of the plan is August 21, 2000.Previous40 C.F.R. § 62.631Next40 C.F.R. § 62.640