The 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)----------------------------------------------------------------------------------------------------------------Eastern Tennessee-Southwestern Virginia Interstate... I I III III IIIValley of Virginia Intrastate........................ I III III III IIICentral Virginia Intrastate.......................... I III III III IIINortheastern Virginia Intrastate..................... IA III III III IIIState Capital Intrastate............................. I III III III IHampton Roads Intrastate............................. I II III III INational Capital Interstate.......................... I I III I I---------------------------------------------------------------------------------------------------------------- [37 FR 15090, July 27, 1972, as amended at 39 FR 16347, May 8, 1974] Sec. 52.2422 [Reserved]