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

Jackson County, Oklahoma; Jefferson County, Oklahoma; and Johnston County, Oklahoma.  The Jackson County Seat is Altus, Oklahoma; the Jefferson County Seat is Waurika, Oklahoma; and the Johnston County Seat is Tishomingo, Oklahoma.