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

Scott County, Missouri; Shannon County, Missouri; and Shelby County, Missouri.  The Scott County Seat is Benton, Missouri; the Shannon County Seat is Eminence, Missouri; and the Shelby County Seat is Shelbyville, Missouri.