{"data":{"id":"us/40-cfr-51.1001","jurisdiction":"us","citation":"40 CFR 51.1001","heading":"Applicability of part 51.","body":"The provisions in subparts A through X of this part apply to areas for purposes of the PM2.5 NAAQS to the extent they are not inconsistent with the provisions of this subpart.","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 Z—Provisions for Implementation of PM2.5 National Ambient Air Quality Standards"],"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":"bcb60db0cc877991363c9bc13483c34352f95e44c2237f267775d87eb23b12c2","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-51.1000","next":"us/40-cfr-51.1002"},"notice":"GroundRules: Original legal text. Not legal advice."}