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 Albany County, New York, and

Allegany County, New York, give the percentage contributions from specific air pollution sources.  The Albany County Seat is Albany, New York, and the Allegany County Seat is Belmont, New York.