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

Donley County, Texas; Duval County, Texas; and Eastland County, Texas.  The Donley County Seat is Clarendon, Texas; the Duval County Seat is San Diego, Texas; and the Eastland County Seat is Eastland, Texas.