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 |