The Alaska plan was evaluated on the basis of the following classifications:
| 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. |