40 CFR § 52.2421
Classification of regions
June 9, 2020
The Virginia plan was evaluated on the basis of the following classifications:
Open Table
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]