APPLICABILITY OF TRANSPORTATION CONFORMITY REQUIREMENTS.

SEC. 305. APPLICABILITY OF TRANSPORTATION CONFORMITY REQUIREMENTS. (a) Highway Construction.—Section 109(j) of title 23, United States Code, is amended by striking “plan for the implementation of any ambient air quality standard for any air quality control region designated pursuant to the Clean Air Act, as amended.” and inserting the following: “plan for— “(1) the implementation of a national ambient air quality standard for each pollutant for which an area is designated as a nonattainment area under section 107(d) of the Clean Air Act (42 U.S.C. 7407(d)); or “(2) the maintenance of a national ambient air quality standard in an area that was designated as a nonattainment area but that was later redesignated by the Administrator as an attainment area for the standard and that is required to develop a maintenance plan under section 175A of the Clean Air Act (42 U.S.C. 7505a).”. (b) Clean Air Act Requirements.—Section 176(c) of the Clean Air Act (42 U.S.C. 7506(c)) is amended by adding at the end the following: “(5) Applicability.—This subsection shall apply only with respect to— “(A) a nonattainment area and each pollutant for which the area is designated as a nonattainment area; and “(B) an area that was designated as a nonattainment area but that was later redesignated by the Administrator as an attainment area and that is required to develop a maintenance plan under section 175A with respect to the specific pollutant for which the area was designated nonattainment.”.