Title 40

SECTION 52.1021

52.1021 Classification of regions.

§ 52.1021 Classification of regions.

The Maine plan was evaluated on the basis of the following classifications:

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]