Classification of regions.

  1. Law
  2. CFR 40
  3. Protection of Environment
  4. Environmental Protection Agency
  5. Air Programs
  6. Approval and Promulgation of Implementation Plans
  7. Illinois
  8. Classification of regions.

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§ 52.721 Classification of regions.

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

Expand Table
Air quality control region Pollutant
Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Ozone
Burlington-Keokuk Interstate I I III III III
East Central Illinois Intrastate III II III III III
Metropolitan Chicago Interstate (Indiana-Illinois) I I I I I
Metropolitan Dubuque Interstate I III III III III
Metropolitan Quad Cities Interstate I III III III III
Metropolitan St. Louis Interstate (Missouri-Illinois) I I III I I
North Central Illinois Intrastate II IA III III III
Paducah (Kentucky)-Cairo (Illinois) Interstate I II III III III
Rockford (Illinois)-Janesville-Beloit (Wisconsin) Interstate II III III III III
Southeast Illinois Intrastate III II III III III
West Central Illinois Intrastate I IA III III III

[37 FR 10862, May 31, 1972, as amended at 39 FR 16346, May 8, 1974; 45 FR 11493, Feb. 21, 1980]


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