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. Wyoming
  8. Classification of regions.

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§ 52.2621 Classification of regions.

The Wyoming 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 Photochemical oxidants (hydrocarbons)
Cheyenne Intrastate II III III III III
Casper Intrastate II III III III III
Wyoming Intrastate III III III III III

[37 FR 10904, May 31, 1972]


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