40 CFR 52.1621 - Classification of regions.

Regulations last checked for updates: May 13, 2024

Title 40 - Protection of Environment last revised: May 09, 2024

View all text of Subpart GG [§ 52.1620 - § 52.1640]

§ 52.1621 - Classification of regions.

The New Mexico plan was evaluated on the basis of the following classifications:

Air quality control region	Pollutant
Air quality control region	Particulate matter	Sulfur oxides	Nitrogen dioxide	Carbon monoxide	Ozone
Albuquerque-Mid-Rio Grande Intrastate	I	III	III	III	I
New Mexico Southern Border Intrastate	IA	IA	III	III	III
El Paso-Las Cruces-Alamogordo Interstate	I	IA	III	I	I
Four Corners Interstate	IA	IA	III	III	III
Northeastern Plains Intrastate	III	III	III	III	III
Pecos-Permian Basin Intrastate	III	III	III	III	III
Southwestern Mountains-Augustine Plains Intrastate	III	III	III	III	III
Upper Rio Grande Valley Intrastate	III	III	III	III	III

[37 FR 1081, May 31, 1972, as amended at 39 FR 16347, May 8, 1974; 42 FR 20131, Apr. 18, 1977; 45 FR 24468, Apr. 10, 1980; 45 FR 67347, Oct. 10, 1980; 52 FR 5965, Feb. 27, 1987]

authority: 42 U.S.C. 7401

cite as: 40 CFR 52.1621