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

Washington County, Nebraska; Wayne County, Nebraska; and Webster County, Nebraska.  The Washington County Seat is Blair, Nebraska; the Wayne County Seat is Wayne, Nebraska; and the Webster County Seat is Red Cloud, Nebraska.