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42 U.S.C. 7401 et seq.
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Nomenclature changes to part 52 appear at 81 FR 74586, Oct. 26, 2016.
The Ohio program, submitted as a requested revision to the Ohio State Implementation Plan on May 17, 1994, and May 4, 1995, satisfies the requirements of section 507 of the Clean Air Act.
[60 FR 42045, Aug. 15, 1995]