Priority Classification | Federal Air Quality Control Region | Included West Virginia Counties |
I | Region I, Steubenville-Weirton-Wheeling Interstate Air Quality Control Region (Ohio - West Virginia) | Brooke Hancock Marshall Ohio |
Region VII, Cumberland-Keyser Interstate Air Quality Control Region (West Virginia - Maryland) | Grant (Union district only) Mineral (Elk, New Creek, and Piedmont Districts) | |
II | Region II, Parkersburg-Marietta Interstate Air Quality Control Region (West Virginia-Ohio) | Jackson Pleasants Tyler Wetzel Wood |
III | All other regions | All other counties or districts not listed above |
W. Va. Code R. agency 45, tit. 45, ser. 45-10, tbl. 45-10A