{"data":{"id":"us/40-cfr-52.2178","jurisdiction":"us","citation":"40 CFR 52.2178","heading":"Significant deterioration of air quality.","body":"(a) The South Dakota plan, as submitted, is approved as meeting the requirements of part C, subpart 1 of the CAA, except that it does not apply to sources proposing to construct on Indian reservations;\n(b) Regulations for preventing significant deterioration of air quality. The provisions of § 52.21 except paragraph (a)(1) are hereby incorporated and made a part of the South Dakota State implementation plan and are applicable to proposed major stationary sources or major modifications to be located on Indian reservations.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS","Subpart QQ—South Dakota"],"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":"0a36c30cdafe40ab899d182ab251f42b4aaba0f88cd4252711e46d3f9de10306","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-52.2174-52.2177","next":"us/40-cfr-52.2179"},"notice":"GroundRules: Original legal text. Not legal advice."}