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

Thayer County, Nebraska; Thomas County, Nebraska; and Thurston County, Nebraska.  The Thayer County Seat is Hebron, Nebraska; the Thomas County Seat is Thedford, Nebraska; and the Thurston County Seat is Pender, Nebraska.