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

Carbon County, Wyoming; Converse County, Wyoming; and Crook County, Wyoming.  The Carbon County Seat is Rawlins, Wyoming; the Converse County Seat is Douglas, Wyoming; and the Crook County Seat is Sundance, Wyoming.