{"data":{"id":"us/40-cfr-81.59","jurisdiction":"us","citation":"40 CFR 81.59","heading":"Cumberland-Keyser Interstate Air Quality Control Region.","body":"The Cumberland-Keyser Interstate Air Quality Control Region (Maryland-West Virginia) has been revised to consist of the territorial area encompassed by the boundaries of the following jurisdictions (including the territorial area of all municipalities (as defined in section 302(f) of the Clean Air Act, 42 U.S.C. 1857h(f)) geographically located within the outermost boundaries of the area so delimited):\nIn the State of Maryland: Allegany County, Garrett County, Washington County.\nIn the State of West Virginia: In Grant County: Union Magisterial District.\nIn Mineral County: Elk Magisterial District, New Creek Magisterial District, Piedmont Magisterial District.","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 B—Designation of Air Quality Control Regions"],"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":"9a7cf40c4b6259b0e88ceb462f8184384a570978a0c75a62b06212798f00adec","source_id":"us-cfr","stale":true,"prev":"us/40-cfr-81.58","next":"us/40-cfr-81.60"},"notice":"GroundRules: Original legal text. Not legal advice."}