52.571—Classification of regions.
The Georgia 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) | |
| Augusta (Georgia)-Aiken (South Carolina) Interstate | I | II | III | III | III |
| Metropolitan Atlanta Intrastate | I | I | III | III | III |
| Chattanooga Interstate | I | II | III | III | III |
| Columbus (Georgia)-Phenix City (Alabama) Interstate | I | III | III | III | III |
| Central Georgia Intrastate | I | I | III | III | III |
| Jacksonville (Florida)-Brunswick (Georgia) Interstate | I | II | III | III | I |
| Northeast Georgia Intrastate | II | III | III | III | III |
| Savannah (Georgia)-Beaufort (South Carolina) Interstate | I | I | III | III | III |
| Southwest Georgia Intrastate | II | II | III | III | III |