{"data":{"id":"us/40-cfr-81.428","jurisdiction":"us","citation":"40 CFR 81.428","heading":"Tennessee.","body":"Area name Acreage Public Law establishing Federal land manager\nGreat Smoky Mountains NP 1 241,207 69-268 USDI-NPS\nJoyce Kilmer-Slickrock Wild 2 3,832 93-622 USDA-FS\n1 Great Smoky Mountains National Park, 514,758 acres overall, of which 273,551 acres are in North Carolina, and 241,207 acres are in Tennessee.\n2 Joyce Kilmer Slickrock Wilderness, 14,033 acres overall, of which 10,201 acres are in North Carolina, and 3,832 acres are in Tennessee.","path":["Title 40—Protection of Environment","CHAPTER I—ENVIRONMENTAL PROTECTION AGENCY","SUBCHAPTER C—AIR PROGRAMS","PART 81—DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSES","Subpart D—Identification of Mandatory Class I Federal Areas Where Visibility Is an Important Value"],"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":"9b1bde1213e70cf30828632b06a8514114ea6f0dbd946811a51e5b46e8dff929","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-81.427","next":"us/40-cfr-81.429"},"notice":"GroundRules: Original legal text. Not legal advice."}