US lawFederal (United States)RegulationsTitle 40 CFR — Protection of EnvironmentChapter I — ENVIRONMENTAL PROTECTION AGENCYPart 81 — DESIGNATION OF AREAS FOR AIR QUALITY PLANNING PURPOSESSubpart D — Identification of Mandatory Class I Federal Areas Where Visibility Is an Important Value81.41340 C.F.R. § 81.413Maine.Last amended: 2016Year: 2026Length: 26 wordsOfficial source Cite as 40 C.F.R. § 81.413 (2026)Area name Acreage Public Law establishing Federal land manager Acadia NP 37,503 65-278 USDI-NPS Moosehorn Wild 7,501 USDI-FWS (Edmunds Unit) (2,782) 91-504 (Baring Unit) (4,719) 93-632Previous40 C.F.R. § 81.412Next40 C.F.R. § 81.414