40 CFR 81.93 - Hampton Roads Intrastate Air Quality Control Region.
The Metropolitan Norfolk Intrastate Air Quality Control Region (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 Virginia:
Counties - Isle of Wight, James City, Nansemond, Southampton, York.
Cities - Chesapeake, Franklin, Hampton, Newport News, Norfolk, Portsmouth, Suffolk, Virginia Beach, Williamsburg.