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. Maine
  8. Classification of regions.

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§ 52.1021 Classification of regions.

The Maine 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 Ozone
Metropolitan Portland Intrastate I II III III III
Androscoggin Valley Interstate IA IA III III III
Down East Intrastate IA IA III III III
Aroostook Intrastate III III III III III
Northwest Maine Intrastate III III III III III

[37 FR 10870, May 31, 1972, as amended at 45 FR 10774, Feb. 19, 1980]


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