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 Fayette County, Tennessee, and

Fentress County, Tennessee, give the percentage contributions from specific air pollution sources.  The Fayette County Seat is Somerville, Tennessee, and the Fentress County Seat is Jamestown, Tennessee.