Classification of regions.

§ 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 IntrastateIIIIIIIIIII
New Mexico Southern Border IntrastateIAIAIIIIIIIII
El Paso-Las Cruces-Alamogordo InterstateIIAIIIII
Four Corners InterstateIAIAIIIIIIIII
Northeastern Plains IntrastateIIIIIIIIIIIIIII
Pecos-Permian Basin IntrastateIIIIIIIIIIIIIII
Southwestern Mountains-Augustine Plains IntrastateIIIIIIIIIIIIIII
Upper Rio Grande Valley IntrastateIIIIIIIIIIIIIII
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