US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 52 — APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANSAppendixes A-C to Part 5240 C.F.R. Appendixes A-C to Part 52[Reserved]ReservedLast amended: 2016Year: 2026Length: 8 wordsOfficial source Cite as 40 C.F.R. Appendixes A-C to Part 52 (2026)40 C.F.R. Appendixes A-C to Part 52. [Reserved]Previous40 C.F.R. Appendix F to Part 52