{"data":{"id":"us/40-cfr-52.971","jurisdiction":"us","citation":"40 CFR 52.971","heading":"Classification of regions.","body":"The Louisiana plan was evaluated on the basis of the following classifications:\nAir quality control region Pollutant\nParticulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Ozone\nSouthern Louisiana-Southeast Texas Interstate II I III III I\nShreveport-Texarkana-Tyler Interstate II III III III III\nMonroe-El Dorado Interstate II III III III III","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS","Subpart T—Louisiana"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-40.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:26:04Z","sha256":"568c3fbe82e8bb31e781e9b9702ae162a25d2c576bf7231cb19b35f421308161","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-52.970","next":"us/40-cfr-52.972-52.974"},"notice":"GroundRules: Original legal text. Not legal advice."}