{"data":{"id":"us/40-cfr-49.11045","jurisdiction":"us","citation":"40 CFR 49.11045","heading":"Classification of regions for episode plans.","body":"The air quality control region which encompasses the Reservation of the Upper Skagit Indian Tribe is classified as follows for purposes of episode plans:\nPollutant Classification\nCarbon monoxide III\nNitrogen dioxide III\nOzone III\nParticulate matter (PM10) II\nSulfur oxides II","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER B—GRANTS AND OTHER FEDERAL ASSISTANCE","PART 49—INDIAN COUNTRY: AIR QUALITY PLANNING AND MANAGEMENT","Subpart M—Implementation Plans for Tribes—Region X"],"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":"6edb611113e6d682f2db7c1907f51ad6ca5f6c4fa6b07916dfba27a1c3d76bbc","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-49.11044","next":"us/40-cfr-49.11046"},"notice":"GroundRules: Original legal text. Not legal advice."}