§81.455. Scope.
40 C.F.R. § 81.455
This subpart identifies interstate transport regions established for national ambient air quality standards pursuant to section 184 or section 176A of the Clean Air Act.
Notes, amendments, and revision history
Source
Source: 87 FR 7746, Feb. 10, 2022, unless otherwise noted.
Authority
Authority: 42 U.S.C. 7401, et seq.
Source
Source: 36 FR 22421, Nov. 25, 1971, unless otherwise noted.