40 CFR § 52.971
Classification of regions
June 9, 2020
The Louisiana plan was evaluated on the basis of the following classifications:
Open Table
| 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 |
[37 FR 10869, May 31, 1972, as amended at 45 FR 9909, Feb. 14, 1980]
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