{"data":{"id":"us/40-cfr-49.10139","jurisdiction":"us","citation":"40 CFR 49.10139","heading":"Permits to operate.","body":"Permits to operate are required for sources not subject to 40 CFR Part 71 in accordance with the requirements of § 49.139.","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":"5a2eaaa5d2018ba5b12d85423aab7303c77614cf58157323236b33860dfe479e","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-49.10138","next":"us/40-cfr-49.10140"},"notice":"GroundRules: Original legal text. Not legal advice."}