40 C.F.R. § 52.1821

Classification of regions.

Last amended: 2016Year: 2026Length: 51 wordsOfficial source

Cite as 40 C.F.R. § 52.1821 (2026)

The North Dakota plan was evaluated on the basis of the following classifications: Air quality control region Pollutant Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Photochemical oxidants (hydrocarbons) Metropolitan Fargo-Moorhead Interstate II III III III III North Dakota Intrastate II III III III III [37 FR 10885, May 31, 1972]
40 C.F.R. § 52.1821: Classification of regions. | Justis AI