Code of Federal Regulations (Last Updated: April 5, 2024) |
Title 40 - Protection of Environment |
Chapter I - Environmental Protection Agency |
SubChapter C - Air Programs |
Part 52 - Approval and Promulgation of Implementation Plans |
Subpart X - Michigan |
§ 52.1171 - Classification of regions.
Latest version.
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§ 52.1171 Classification of regions.
The Michigan plan was evaluated on the basis of the following classifications:
Air quality control region Pollutant Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Ozone Metropolitan Detroit-Port Huron Intrastate I I III III III Metropolitan Toledo Interstate I I III III I South Central Michigan Intrastate II II III III III South Bend-Elkhart (Indiana)-Benton Harbor (Michigan) Interstate I IA III III III Central Michigan Intrastate II III III III III Upper Michigan Intrastate III III III III III [37 FR 10873, May 31, 1972, as amended at 39 FR 16346, May 8, 1974; 45 FR 29801, May 6, 1980]