U.S. Code of Federal Regulations

Regulations most recently checked for updates: Aug 27, 2025

All TitlesTitle 40Chapter IPart 52Subpart U - Subpart U—Maine
View all text of Subpart U [§ 52.1019 - § 52.1037]
§ 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 IntrastateIIIIIIIIIIII
Androscoggin Valley InterstateIAIAIIIIIIIII
Down East IntrastateIAIAIIIIIIIII
Aroostook IntrastateIIIIIIIIIIIIIII
Northwest Maine IntrastateIIIIIIIIIIIIIII
[37 FR 10870, May 31, 1972, as amended at 45 FR 10774, Feb. 19, 1980]
© 2016 GovRegs | About | Disclaimer | Privacy