52.2521—Classification of regions.
The West 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) | |
Steubenville-Weirton-Wheeling Interstate | I | I | III | III | III |
Parkersburg-Marietta Interstate | I | II | III | III | III |
Huntington-Ashland-Portsmouth-Ironton Interstate | I | III | III | III | III |
Kanawha Valley Intrastate | I | III | III | III | III |
Southern West Virginia Intrastate | III | III | III | III | III |
North Central West Virginia Intrastate | I | III | III | III | III |
Cumberland-Keyser Interstate | I | I | III | III | III |
Central West Virginia Intrastate | III | III | III | III | III |
Allegheny Intrastate | III | III | III | III | III |
Eastern Panhandle Intrastate | III | III | III | III | III |