{"data":{"id":"us/40-cfr-52.1339","jurisdiction":"us","citation":"40 CFR 52.1339","heading":"Visibility protection.","body":"(a) The requirements of section 169A of the Clean Air Act are met because the plan includes measures for the protection visibility in mandatory Class I Federal areas. The Regional Haze Plan submitted by Missouri on August 5, 2009, and supplemented on January 30, 2012, in addition to the 5-year progress report submitted on September 5, 2014, and supplemented by state letter on July 31, 2017, contain fully approvable measures for meeting the requirements of the Regional Haze Rule.\n(b) [Reserved]","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 52—APPROVAL AND PROMULGATION OF IMPLEMENTATION PLANS","Subpart AA—Missouri"],"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":"6c8c1dd036c24bb6afe07c967fd8074f1ffa91b193340f0a4278f345da9cf706","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-52.1336-52.1338","next":"us/40-cfr-52.1340"},"notice":"GroundRules: Original legal text. Not legal advice."}