40 CFR § 52.71
Classification of regions
June 9, 2020
The Alaska 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 | |
| Cook Inlet Intrastate | I | III | III | I | III. |
| Northern Alaska Intrastate | I | III | III | I | III. |
| South Central Alaska Intrastate | III | III | III | III | III. |
| Southeastern Alaska Intrastate | III | III | III | III | III. |
[37 FR 10848, May 31, 1972, as amended at 48 FR 30625, July 5, 1983]
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