Abstract: The Environmental Protection Agency (EPA) compiles data on emission tonnages of air pollutants for US counties.  US Air Quality Gradebook ("AirGrades") source sheets give the percentage contributions from specific air pollution sources.  This source sheet is for

Broadwater County, Montana; Carbon County, Montana; and Carter County, Montana.  The Broadwater County Seat is Townsend, Montana; the Carbon County Seat is Red Lodge, Montana; and the Carter County Seat is Ekalaka, Montana.