1977—Subsec. (a)(1). Pub. L. 95–190, § 14(a)(44), substituted “part;” for “part:”.

Subsec. (a)(3). Pub. L. 95–190, § 14(a)(45), inserted provision making applicable requirement of section 7410(j) of this title.

Subsec. (b). Pub. L. 95–190, § 14(a)(46), inserted “cause or” before “contribute” and struck out “actual” before “allowable emissions”.

Subsec. (d)(2)(C). Pub. L. 95–190, § 14(a)(47)–(49), in cl. (ii) substituted “contribute” for “contrbute”, in cl. (iii) substituted “quality-related” for “quality related” and “concentrations which” for “concentrations, which”, and in cl. (iv) substituted “such facility” for “such sources” and “will not cause or contribute to concentrations of such pollutant which exceed” for “together with all other sources, will not exceed”.

Subsec. (d)(2)(D). Pub. L. 95–190, § 14(a)(50), (51), in cl. (iii) substituted provisions relating to determinations of amounts of emissions of sulfur oxides from facilities, for provisions relating to determinations of amounts of emissions of sulfur oxides from sources operating under permits issued pursuant to this subpar., together with all other sources, and added cl. (iv).