52.971—Classification of regions.
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 |