C.F.R. » Title 40 » CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY › SUBCHAPTER C—AIR PROGRAMS › PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS › Subpart YY—Wisconsin

40 C.F.R. § 52.2571

Classification of regions

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

Air quality control regionPollutant
Particulate matterSulfur oxidesNitrogen dioxideCarbon monoxideOzone
Duluth (Minnesota)-Superior (Wisconsin) InterstateIIIIIIIIIIII
North Central Wisconsin IntrastateIIIIIIIIIIIIII
Lake Michigan IntrastateIIIIIIIIIIIIII
Southeast Minnesota-La Crosse (Wisconsin) InterstateIIIAIIIIIIIII
Southern Wisconsin IntrastateIIIIIIIIIIIIII
Southeastern Wisconsin IntrastateIIIIIIIIII
Rockford (Illinois)-Jamesville-Beloit (Wisconsin) InterstateIIIIIIIIIIIIII
Metropolitan Dubuque InterstateIIIIIIIIIIIII
[37 FR 10902, May 31, 1972, as amended at 39 FR 16348, May 8, 1974; 45 FR 2322, Jan. 11, 1980]