Abstract: The Environmental Protection Agency (EPA) compiles data on emission tonnages of air pollutants for US counties.  US Air Quality Gradebook ("AirGrades") source sheets such as this one for Oconee County, Georgia, and

Oglethorpe County, Georgia, give the percentage contributions from specific air pollution sources.  The Oconee County Seat is Watkinsville, Georgia, and the Oglethorpe County Seat is Lexington, Georgia.