52.2121—Classification of regions.
The South Carolina 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 | I | III | III | III |
| Metropolitan Charlotte Interstate | I | II | III | III | I |
| Camden-Sumter Intrastate | II | III | III | III | III |
| Charleston Intrastate | I | I | III | III | III |
| Columbia Intrastate | II | III | III | III | III |
| Florence Intrastate | III | III | III | III | III |
| Georgetown Intrastate | II | III | III | III | III |
| Greenville-Spartanburg Intrastate | I | III | III | III | III |
| Greenwood Intrastate | III | III | III | III | III |
| Savannah (Georgia)-Beaufort (South Carolina) Interstate | I | I | III | III | III |