The Clean Air Act, referred to in subsecs. (b)(1)(C)(ii), (g)(4), and (k)(2), is act July 14, 1955, ch. 360, 69 Stat. 322, which is classified generally to chapter 85 (§ 7401 et seq.) of this title. Title II of the Act, known as the National Emission Standards Act, is classified generally to subchapter II (§ 7521 et seq.) of chapter 85 of this title. Part C of title II of the Act is classified generally to part C (§ 7581 et seq.) of chapter 85 of this title. For complete classification of this Act to the Code, see Short Title note set out under section 7401 of this title and Tables.

This subchapter, referred to in subsecs. (b)(1)(A), (e)(1)(A), (g)(3), (j), and (o)(2)(A), was in the original “this title” meaning title V of Pub. L. 102–486, Oct. 24, 1992, 102 Stat. 2887, which is classified generally to this subchapter.

In subsecs. (b)(1)(C)(ii) and (o)(2)(B), “chapter 301 of title 49” substituted for “the National Traffic and Motor Vehicle Safety Act of 1966 [15 U.S.C. 1381 et seq.]” on authority of Pub. L. 103–272, § 6(b), July 5, 1994, 108 Stat. 1378, the first section of which enacted subtitles II, III, and V to X of Title 49, Transportation.