U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
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All TitlesTitle 40Chapter IPart 81Subpart B - Subpart B—Designation of Air Quality Control Regions
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The Northeast Iowa 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 Iowa: Allamakee County, Benton County, Black Hawk County, Bremer County, Buchanan County, Chickasaw County, Delaware County, Fayette County, Howard County, Jones County, Linn County, Winneshiek County.
