42 U.S. Code § 7602. Definitions
Section was formerly classified to section 1857h of this title.
Provisions similar to those in subsecs. (b) and (d) of this section were contained in a section 1857e of this title, act July 14, 1955, ch. 360, § 6, 69 Stat. 323, prior to the general amendment of this chapter by Pub. L. 88–206.
Subsec. (b)(5). Pub. L. 101–549, § 107(a)(3), added par. (5).
Subsec. (g). Pub. L. 101–549, § 108(j)(2), inserted at end “Such term includes any precursors to the formation of any air pollutant, to the extent the Administrator has identified such precursor or precursors for the particular purpose for which the term ‘air pollutant’ is used.”
Subsec. (q). Pub. L. 101–549, § 101(d)(4), added subsec. (q).
Subsec. (z). Pub. L. 101–549, § 709, added subsec. (z).
1977—Subsec. (d). Pub. L. 95–95, § 218(c), inserted “and includes the Commonwealth of the Northern Mariana Islands” after “American Samoa”.
Subsec. (g). Pub. L. 95–95, § 301(c), expanded definition of “air pollutant” so as, expressly, to include physical, chemical, biological, and radioactive substances or matter emitted into or otherwise entering the ambient air.
1970—Subsec. (a). Pub. L. 91–604, § 15(c)(1), substituted definition of “Administrator” as meaning Administrator of the Environmental Protection Agency for definition of “Secretary” as meaning Secretary of Health, Education, and Welfare.
Subsecs. (g), (h). Pub. L. 91–604, § 15(a)(1), added subsec. (g) defining “air pollutant”, redesignated former subsec. (g) as (h) and substituted references to effects on soil, water, crops, vegetation, manmade materials, animals, wildlife, weather, visibility, and climate for references to injury to agricultural crops and livestock, and inserted references to effects on economic values and on personal comfort and well being.
1967—Pub. L. 90–148 reenacted section without change.
 So in original.