(a) The Indiana plan was evaluated on the basis of the following classifications: ----------------------------------------------------------------------------------------------------------------
Pollutant
----------------------------------------------------------
Air quality control region Photochemical
Particulate Sulfur Nitrogen Carbon oxidants
matter oxides dioxide monoxide (hydrocarbons)----------------------------------------------------------------------------------------------------------------East Central Indiana Intrastate...................... II II III III IIIEvansville (Indiana)-Owensboro-Henderson (Kentucky) I II III III III
Interstate..........................................Louisville Interstate................................ I I III III IMetropolitan Chicago Interstate (Indiana-Illinois)... I I I I IMetropolitan Cincinnati Interstate................... I II III III IMetropolitan Indianapolis Intrastate................. I I I I INortheast Indiana Intrastate......................... II III III III IIISouth Bend-Elkhart (Indiana)-Benton Harbor (Michigan) I IA III III III
Interstate..........................................Southern Indiana Intrastate.......................... IA IA III III IIIWabash Valley Intrastate............................. I I III III III----------------------------------------------------------------------------------------------------------------
(b) The requirements of Sec. 51.150 of this chapter are not met by the classification of counties in APC-22 for the purposes of attainment and maintenance of the total suspended particulate ambient air quality standards.
(c) The requirements of Sec. 51.150 of this chapter are not met by the classification of counties in APC-22 for the purposes of attainment and maintenance of the photochemical oxidant (hydrocarbon) ambient air quality standards.
(d) The requirements of Sec. 51.150 of this chapter are not met by the classification of Jefferson, LaPorte, Porter, Vigo and Warrick Counties in Indiana in Regulation APC-22 for the purposes of attainment and maintenance of the sulfur dioxide ambient air quality standards. [37 FR 10863, May 31, 1972, as amended at 39 FR 16346, May 8, 1974; 40 FR 50033, Oct. 28, 1975; 41 FR 35677, Aug. 24, 1976; 42 FR 34519, July 6, 1977; 51 FR 40675, Nov. 7, 1986] Sec. 52.772 [Reserved]