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. Missouri
  8. Classification of regions.

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§ 52.1321 Classification of regions.

The Missouri plans were evaluated on the basis of the following classifications:

Expand Table
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]


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