40 C.F.R. § 81.255
The Southwest Kansas Intrastate Air Quality Control Region 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 Kansas: Barber County, Clark County, Comanche County, Edwards County, Finney County, Ford County, Grant County, Gray County, Greeley County, Hamilton County, Haskell County, Hodgeman County, Kearny County, Kiowa County, Lane County, Meade County, Morton County, Pawnee County, Pratt County, Scott County, Seward County, Stafford County, Stanton County, Stevens County, Wichita County.
40 C.F.R. §81.255