40 CFR 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.