CFR > Title 40 - Protection of Environment > CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY > SUBCHAPTER C—AIR PROGRAMS (Parts 50–99) > PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS > SUBPART SS—Texas (§52.2270 to §52.2311) > 52.2271—Classification of regions.

52.2271—Classification of regions.

(a) The Texas plan was evaluated on the basis of the following classifications:
Air quality control region Pollutant
Particulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Ozone
Abilene-Wichita Falls Intrastate II III III III III
Amarillo-Lubbock Intrastate II III III III III
Austin-Waco Intrastate II III III III I
Brownsville-Laredo Intrastate I III III III III
Corpus Christi-Victoria Intrastate I II III III I
Midland-Odessa-San Angelo Intrastate II II III III III
Metropolitan Houston-Galveston Intrastate I I III III I
Metropolitan Dallas-Fort Worth Intrastate II III III III I
Metropolitan San Antonio Intrastate II III III III I
Southern Louisiana-Southeast Texas Interstate II I III III I
El Paso-Las Cruces Alamogordo Interstate I IA III I I
Shreveport-Texarkana-Tyler Interstate II III III III III
(b) The proposed priority classifications for particulate matter and carbon monoxide submitted by the Governor on March 21, 1975 are disapproved.
(c) The revision of section II, classification of regions, submitted by the Texas Air Control Board with the semiannual in 1975 is disapproved.

Code of Federal Regulations

[37 FR 10895, May 31, 1972, as amended at 39 FR 16347, May 8, 1974; 42 FR 20131, Apr. 18, 1977; 42 FR 27894, June 1, 1977; 45 FR 19244, Mar. 25, 1980]