Mahnomen County, Minnesota, Air Pollution Sources

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Abstract: The Environmental Protection Agency (EPA) compiles data on emission tonnages of air pollutants for US counties.  US Air Quality Gradebook ("AirGrades") source sheets such as this one for Mahnomen County, Minnesota, and

Marshall County, Minnesota, give the percentage contributions from specific air pollution sources.  The Mahnomen County Seat is Mahnomen, Minnesota, and the Marshall County Seat is Warren, Minnesota.