40 C.F.R. § 52.2321

Current through March 31, 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 Intrastate	I	I	I	I	I
Four Corners Interstate	IA	IA	III	III	III
Utah Intrastate	III	III	III	III	III

40 C.F.R. §52.2321

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