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 | 
[37 FR 10867, May 31, 1972]