§51.1119. Applicability.
40 C.F.R. § 51.1119
As of revocation of the 1997 ozone NAAQS on April 6, 2015, as set forth in § 50.10(c), the provisions of subpart AA shall replace the provisions of subpart X, §§ 51.900 to 51.918, which cease to apply except for § 51.907 for the anti-backsliding purposes of § 51.1105(c)(2). See subpart X § 51.919.
Notes, amendments, and revision history
Amendments
[80 FR 12314, Mar. 6, 2015]
Source
Source: 77 FR 30170, May 21, 2012, unless otherwise noted.
Authority
Authority: 23 U.S.C. 101; 42 U.S.C. 7401-7671q.
Source
Source: 36 FR 22398, Nov. 25, 1971, unless otherwise noted.
Amendments
[80 FR 12314, Mar. 6, 2015]