40 C.F.R. § 81.13
The New Jersey-New York-Connecticut Interstate Air Quality Control Region 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 Connecticut: Bethel Township, Bridgeport Township, Bridgewater, Brookfield Township, Danbury Township, Darien Township, Easton Township, Fairfield Township, Greenwich Township, Monroe Township, New Canaan Township, New Fairfield Township, New Milford, Newtown Township, Norwalk Township, Redding Township, Ridgefield Township, Sherman, Stamford Township, Stratford Township, Trumbull Township, Weston Township, Westport Township, Wilton Township.
In the State of New York: Bronx County, Kings County, Nassau County, New York County, Queens County, Richmond County, Rockland County, Suffolk County, Westchester County.
In the State of New Jersey: Bergen County, Essex County, Hudson County, Middlesex County, Monmouth County, Morris County, Passaic County, Somerset County, Union County.
40 C.F.R. §81.13