Section was formerly classified to section 1857c–1 of this title.

A prior section 106 of act July 14, 1955, was renumbered section 117 by Pub. L. 91–604 and is classified to section 7417 of this title.

1990—Pub. L. 101–549, § 102(f)(2)(A), inserted “or of implementing section 7506a of this title (relating to control of interstate air pollution) or section 7511c of this title (relating to control of interstate ozone pollution)” after “section 7407 of this title”.

Pub. L. 101–549, § 102(f)(2)(B), which directed insertion of “any commission established under section 7506a of this title (relating to control of interstate air pollution) or section 7511c of this title (relating to control of interstate ozone pollution) or” after “program costs of”, was executed by making the insertion after that phrase the first place it appeared to reflect the probable intent of Congress.

Pub. L. 101–549, § 102(f)(2)(C), which directed insertion of “or such commission” after “such agency” in last sentence, was executed by making insertion after “such agency” the first place it appeared in the last sentence to reflect the probable intent of Congress.

Pub. L. 101–549, §§ 102(f)(2)(D), 802 (f), substituted “three-fifths of the air quality implementation program costs of such agency or commission” for “three-fourths of the air quality planning program costs of such agency”.

1970—Pub. L. 91–604 struck out designation “(a)”, substituted provisions authorizing Federal grants for the purpose of developing implementation plans and provisions requiring the designated State agency to be capable of recommending plans for implementation of national primary and secondary ambient air quality standards, for provisions authorizing Federal grants for the purpose of expediting the establishment of air quality standards and provisions requiring the designated State agency to be capable of recommending standards of air quality and plans for implementation thereof, respectively, and struck out subsec. (b) which authorized establishment of air quality planning commissions.