Abstract: The Environmental Protection Agency (EPA) compiles data on emission tonnages of air pollutants for US counties.  US Air Quality Gradebook ("AirGrades") source sheets give the percentage contributions from specific air pollution sources.  This source sheet is for

Carver County, Minnesota; Cass County, Minnesota; and Chippewa County, Minnesota.  The Carver County Seat is Chaska, Minnesota; the Cass County Seat is Walker, Minnesota; and the Chippewa County Seat is Montevideo, Minnesota.