Code of Federal Regulations (alpha)

CFR /  Title 40  /  Part 52  /  Sec. 52.1621 Classification of regions.

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

Pollutant

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Air quality control region Particulate Sulfur Nitrogen Carbon

matter oxides dioxide monoxide Ozone----------------------------------------------------------------------------------------------------------------Albuquerque-Mid-Rio Grande Intrastate..................... I III III III INew Mexico Southern Border Intrastate..................... IA IA III III IIIEl Paso-Las Cruces-Alamogordo Interstate.................. I IA III I IFour Corners Interstate................................... IA IA III III IIINortheastern Plains Intrastate............................ III III III III IIIPecos-Permian Basin Intrastate............................ III III III III IIISouthwestern Mountains-Augustine Plains Intrastate........ III III III III IIIUpper 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]