40 C.F.R. § 52.1621

Current through October 31, 2024

Section 52.1621 - Classification of regions

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

Air quality control region	Pollutant
	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

40 C.F.R. §52.1621

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