The West Virginia plan was evaluated on the basis of the following classifications: ----------------------------------------------------------------------------------------------------------------
Pollutant
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Air quality control region Photochemical
Particulate Sulfur Nitrogen Carbon oxidants
matter oxides dioxide monoxide (hydrocarbons)----------------------------------------------------------------------------------------------------------------Steubenville-Weirton-Wheeling Interstate............. I I III III IIIParkersburg-Marietta Interstate...................... I II III III IIIHuntington-Ashland-Portsmouth-Ironton Interstate..... I III III III IIIKanawha Valley Intrastate............................ I III III III IIISouthern West Virginia Intrastate.................... III III III III IIINorth Central West Virginia Intrastate............... I III III III IIICumberland-Keyser Interstate......................... I I III III IIICentral West Virginia Intrastate..................... III III III III IIIAllegheny Intrastate................................. III III III III IIIEastern Panhandle Intrastate......................... III III III III III---------------------------------------------------------------------------------------------------------------- [37 FR 10902, May 31, 1972]