{"data":{"id":"us/40-cfr-81.406","jurisdiction":"us","citation":"40 CFR 81.406","heading":"Colorado.","body":"Area name Acreage Public Law establishing Federal land manager\nBlack Canyon of the Gunnison Wild 11,180 94-567 USDI-NPS\nEagles Nest Wild 133,910 94-352 USDA-FS\nFlat Tops Wild 235,230 94-146 USDA-FS\nGreat Sand Dunes Wild 33,450 94-567 USDI-NPS\nLa Garita Wild 48,486 88-577 USDA-FS\nMaroon Bells-Snowmass Wild 71,060 88-577 USDA-FS\nMesa Verde NP 51,488 59-353 USDI-NPS\nMount Zirkel Wild 72,472 88-577 USDA-FS\nRawah Wild 26,674 88-577 USDA-FS\nRocky Mountain NP 263,138 63-238 USDI-NPS\nWeminuche Wild 400,907 93-632 USDA-FS\nWest Elk Wild 61,412 88-577 USDA-FS","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":"4b831f390067bc9752f87b5d228e53c8a8a725786168563eee039fdbf22f356f","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-81.405","next":"us/40-cfr-81.407"},"notice":"GroundRules: Original legal text. Not legal advice."}