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 Catoosa County, Georgia, and

Charlton County, Georgia, give the percentage contributions from specific air pollution sources.  The Catoosa County Seat is Ringgold, Georgia, and the Charlton County Seat is Folkston, Georgia.