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Code of Federal Regulations (Last Updated: July 5, 2024) |
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Title 40 - Protection of Environment |
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Chapter I - Environmental Protection Agency |
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SubChapter C - Air Programs |
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Part 52 - Approval and Promulgation of Implementation Plans |
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Subpart AA - Missouri |
§ 52.1321 - Classification of regions.
Latest version.
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§ 52.1321 Classification of regions.
The Missouri plans were 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 Southwest Missouri Intrastate I III III III III Southeast Missouri Intrastate III III III III III Northern Missouri Intrastate II III III III III Metropolitan St. Louis Interstate I I III I I [37 FR 10875, May 31, 1972, as amended at 39 FR 16347, May 8, 1974]