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

Gosper County, Nebraska; Grant County, Nebraska; and Greeley County, Nebraska.  The Gosper County Seat is Elwood, Nebraska; the Grant County Seat is Hyannis, Nebraska; and the Greeley County Seat is Greeley, Nebraska.