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

Washita County, Oklahoma; Woods County, Oklahoma; and Woodward County, Oklahoma.  The Washita County Seat is Cordell, Oklahoma; the Woods County Seat is Alva, Oklahoma; and the Woodward County Seat is Woodward, Oklahoma.