40 C.F.R. § 52.2321

Current through September 30, 2024
Section 52.2321 - Classification of regions

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 IntrastateIIIII
Four Corners InterstateIAIAIIIIIIIII
Utah IntrastateIIIIIIIIIIIIIII

40 C.F.R. §52.2321

37 FR 10898, May 31, 1972, as amended at 39 FR 16347, May 8, 1974