40 CFR § 52.2571 - Classification of regions.

§ 52.2571 Classification of regions.

The Wisconsin plan was evaluated on the basis of the following classifications:

Air quality control region Pollutant
Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Ozone
Duluth (Minnesota)-Superior (Wisconsin) Interstate I II III III III
North Central Wisconsin Intrastate II III III III III
Lake Michigan Intrastate II III III III III
Southeast Minnesota-La Crosse (Wisconsin) Interstate II IA III III III
Southern Wisconsin Intrastate II III III III III
Southeastern Wisconsin Intrastate I II III III I
Rockford (Illinois)-Jamesville-Beloit (Wisconsin) Interstate II III III III III
Metropolitan Dubuque Interstate I III III III III
[37 FR 10902, May 31, 1972, as amended at 39 FR 16348, May 8, 1974; 45 FR 2322, Jan. 11, 1980]

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