The Louisiana plan was evaluated on the basis of the following classifications:
| Air quality control region
| Pollutant
|
|---|
| Particulate matter
| Sulfur oxides
| Nitrogen dioxide
| Carbon monoxide
| Ozone
|
|---|
| Southern Louisiana-Southeast Texas Interstate | II | I | III | III | I
|
| Shreveport-Texarkana-Tyler Interstate | II | III | III | III | III
|
| Monroe-El Dorado Interstate | II | III | III | III | III |