{"data":{"id":"us/40-cfr-51.913","jurisdiction":"us","citation":"40 CFR 51.913","heading":"How do the section 182(f) NOX exemption provisions apply for the 8-hour NAAQS?","body":"(a) A person may petition the Administrator for an exemption from NOX obligations under section 182(f) for any area designated nonattainment for the 8-hour ozone NAAQS and for any area in a section 184 ozone transport region.\n(b) The petition must contain adequate documentation that the criteria in section 182(f) are met.\n(c) A section 182(f) NOX exemption granted for the 1-hour ozone standard does not relieve the area from any NOX obligations under section 182(f) for the 8-hour ozone standard.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 51—REQUIREMENTS FOR PREPARATION, ADOPTION, AND SUBMITTAL OF IMPLEMENTATION PLANS","Subpart X—Provisions for Implementation of 8-hour Ozone National Ambient Air Quality Standard"],"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":"23765054343e2541829be6cecaab7ea8a9c524a372fc91be2996d0cd9efe8b51","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-51.912","next":"us/40-cfr-51.914"},"notice":"GroundRules: Original legal text. Not legal advice."}