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

Lincoln County, Kansas; Linn County, Kansas; and Logan County, Kansas.  The Lincoln County Seat is Lincoln, Kansas; the Linn County Seat is Mound City, Kansas; and the Logan County Seat is Oakley, Kansas.