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

Delaware County, Oklahoma; Dewey County, Oklahoma; and Ellis County, Oklahoma.  The Delaware County Seat is Jay, Oklahoma; the Dewey County Seat is Taloga, Oklahoma; and the Ellis County Seat is Arnett, Oklahoma.