40 CFR § 81.203
Sandusky Intrastate Air Quality Control Region
June 9, 2020
The Sandusky Intrastate Air Quality Control Region (Ohio) 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 Ohio: Erie County, Huron County, Ottawa County, Sandusky County, Seneca County.