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. Iowa
  8. Classification of regions.

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§ 52.821 Classification of regions.

The Iowa plan was evaluated on the basis of the following classification:

Expand Table
Air quality control region Pollutant
Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Photochemical oxidants (hydrocarbons)
Metropolitan Omaha-Council Bluffs Interstate I II III III III
Metropolitan Sioux Falls Interstate II III III III III
Metropolitan Sioux City Interstate III III III III III
Metropolitan Dubuque Interstate I III III III III
Metropolitan Quad Cities Interstate I III III III III
Burlington-Keokuk Interstate I I III III III
Northwest Iowa Intrastate III III III III III
North Central Iowa Intrastate IA III III III III
Northeast Iowa Intrastate I III III III III
Southwest Iowa Intrastate III III III III III
South Central Iowa Intrastate I III III III I
Southeast Iowa Intrastate III III III III III

[37 FR 10865, May 31, 1972, as amended at 39 FR 16346, May 8, 1974]


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