{"data":{"id":"us/40-cfr-52.871","jurisdiction":"us","citation":"40 CFR 52.871","heading":"Classification of regions.","body":"The Kansas plan was evaluated on the basis of the following classifications:\nAir quality control region Pollutant\nParticulate matter Sulfur oxides Nitrogen dioxide Carbon monoxide Photochemical oxidants (hydrocarbons)\nMetropolitan Kansas City Interstate I III III I I\nSouth Central Kansas Intrastate I III III III I\nNortheast Kansas Intrastate I III III III III\nSoutheast Kansas Intrastate III III III III III\nNorth Central Kansas Intrastate I III III III III\nNorthwest Kansas Intrastate I III III III III\nSouthwest Kansas Intrastate I 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 R—Kansas"],"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":"4cf54d2899e1633819949d49cf2679ad78aab56a4b8c6e5eddc02dea6418098b","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-52.870","next":"us/40-cfr-52.872"},"notice":"GroundRules: Original legal text. Not legal advice."}