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 Meriwether County, Georgia, and

Miller County, Georgia, give the percentage contributions from specific air pollution sources.  The Meriwether County Seat is Greenville, Georgia, and the Miller County Seat is Colquitt, Georgia.