The Ohio plan was evaluated on the basis of the following classifications: ----------------------------------------------------------------------------------------------------------------
Pollutant
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Air quality control region Particulate Sulfur Nitrogen Carbon
matter oxides dioxide monoxide Ozone----------------------------------------------------------------------------------------------------------------Greater Metropolitan Cleveland Intrastate................. I I III III IHuntington (West Virginia)-Ashland (Kentucky)-Portsmouth- I III III III III
Ironton (Ohio) Interstate................................Mansfield-Marion Intrastate............................... II II III III IIIMetropolitan Cincinnati Interstate........................ I II III III IMetropolitan Columbus Intrastate.......................... I III III III IMetropolitan Dayton Intrastate............................ I II III III IMetropolitan Toledo Interstate............................ I I III III INorthwest Ohio Intrastate................................. II I III III IIINorthwest Pennsylvania-Youngstown Interstate.............. I II III III IIIParkersburg (West Virginia)-Marietta (Ohio) Interstate.... I II III III IIISandusky Intrastate....................................... III III III III IIISteubenville-Weirton-Wheeling Interstate.................. I I III III IIIWilmington-Chillicothe-Logan Intrastate................... III III III III IIIZanesville-Cambridge Intrastate........................... II IA III III III---------------------------------------------------------------------------------------------------------------- [37 FR 10886, May 31, 1972, as amended at 39 FR 16347, May 8, 1974; 45 FR 72146, Oct. 31, 1980] Sec. 52.1872 [Reserved]