52.871—Classification of regions.
The Kansas plan was evaluated on the basis of the following classifications:
| Air quality control region | Pollutant | ||||
|---|---|---|---|---|---|
| Particulate matter | Sulfur oxides | Nitrogen dioxide | Carbon monoxide | Photochemical oxidants (hydrocarbons) | |
| Metropolitan Kansas City Interstate | I | III | III | I | I |
| South Central Kansas Intrastate | I | III | III | III | I |
| Northeast Kansas Intrastate | I | III | III | III | III |
| Southeast Kansas Intrastate | III | III | III | III | III |
| North Central Kansas Intrastate | I | III | III | III | III |
| Northwest Kansas Intrastate | I | III | III | III | III |
| Southwest Kansas Intrastate | I | III | III | III | III |