{"data":{"id":"us/40-cfr-81.436","jurisdiction":"us","citation":"40 CFR 81.436","heading":"Wyoming.","body":"Area name Acreage Public Law establishing Federal land manager\nBridger Wild 392,160 88-577 USDA-FS\nFitzpatrick Wild 191,103 94-567 USDA-FS\nGrand Teton NP 305,504 81-787 USDI-NPS\nNorth Absaroka Wild 351,104 88-577 USDA-FS\nTeton Wild 557,311 88-577 USDA-FS\nWashakie Wild 686,584 92-476 USDA-FS\nYellowstone NP 1 2,020,625 (2) USDI-NPS\n1 Yellowstone National Park, 2,219,737 acres overall, of which 2,020,625 acres are in Wyoming, 167,624 acres are in Montana, and 31,488 acres are in Idaho.\n2 17 Stat. 32 (42nd Cong.).","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":"24d56229b6f82aa2c2a82e11c4f25daf5ee261f41bbcb6a30d5a4b4d26d2e298","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-81.435","next":"us/40-cfr-81.437"},"notice":"GroundRules: Original legal text. Not legal advice."}