40 C.F.R. § 52.2321

Classification of regions.

Last amended: 2016Year: 2026Length: 66 wordsOfficial source

Cite as 40 C.F.R. § 52.2321 (2026)

The Utah 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) Wasatch Front Intrastate I I I I I Four Corners Interstate IA IA III III III Utah Intrastate III III III III III [37 FR 10898, May 31, 1972, as amended at 39 FR 16347, May 8, 1974]
40 C.F.R. § 52.2321: Classification of regions. | Justis AI