40 C.F.R. § 81.230
The Allegheny Intrastate Air Quality Control Region (West Virginia) consists of the territorial area encompassed by the boundaries of the following jurisdictions or described area (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 West Virginia: Greenbrier County, Hampshire County, Hardy County, Monroe County, Pendleton County, Pocahontas County, Randolph County, Summers County, Tucker County.
In Grant County: Grant Magisterial District, Milroy Magisterial District.
In Mineral County: Cabin Run Magisterial District, Frankfort Magisterial District, Welton Magisterial District.
40 C.F.R. §81.230