U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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All TitlesTitle 40Chapter IPart 81Subpart B - Subpart B—Designation of Air Quality Control Regions
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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):
In the State of Maryland: Allegany County, Garrett County, Washington County.
In the State of West Virginia: In Grant County: Union Magisterial District.
In Mineral County: Elk Magisterial District, New Creek Magisterial District, Piedmont Magisterial District.
