[Code of Federal Regulations] [Title 40, Volume 3] [Revised as of July 1, 2004] From the U.S. Government Printing Office via GPO Access [CITE: 40CFR52.971] [Page 712] TITLE 40--PROTECTION OF ENVIRONMENT CHAPTER I--ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PART 52_APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS --Table of Contents Subpart T_Louisiana Sec. 52.971 Classification of regions. The Louisiana plan was evaluated on the basis of the following classifications: ---------------------------------------------------------------------------------------------------------------- Pollutant ----------------------------------------------------- Air quality control region Particulate Sulfur Nitrogen Carbon matter oxides dioxide monoxide Ozone ---------------------------------------------------------------------------------------------------------------- Southern Louisiana-Southeast Texas Interstate............. II I III III I Shreveport-Texarkana-Tyler Interstate..................... II III III III III Monroe-El Dorado Interstate............................... II III III III III ---------------------------------------------------------------------------------------------------------------- [37 FR 10869, May 31, 1972, as amended at 45 FR 9909, Feb. 14, 1980]