40 CFR § 52.2421 - Classification of regions.

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§ 52.2421 Classification of regions.

The Virginia plan was evaluated on the basis of the following classifications:

Air quality control region Pollutant
Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Photochemical oxidants (hydrocarbons)
Eastern Tennessee-Southwestern Virginia Interstate I I III III III
Valley of Virginia Intrastate I III III III III
Central Virginia Intrastate I III III III III
Northeastern Virginia Intrastate IA III III III III
State Capital Intrastate I III III III I
Hampton Roads Intrastate I II III III I
National Capital Interstate I I III I I
[37 FR 15090, July 27, 1972, as amended at 39 FR 16347, May 8, 1974]