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

Sheridan County, Wyoming; Sublette County, Wyoming; and Sweetwater County, Wyoming.  The Sheridan County Seat is Sheridan, Wyoming; the Sublette County Seat is Pinedale, Wyoming; and the Sweetwater County Seat is Green River, Wyoming.