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. South Dakota
  8. Classification of regions.

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§ 52.2171 Classification of regions.

The South Dakota plan 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 Sioux City Interstate III III III III III
Metropolitan Sioux Falls Interstate II III III III III
Black Hills - Rapid City Intrastate III III III III III
South Dakota Intrastate III III III III III

[37 FR 10893, May 31, 1972]


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