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

Sevier County, Utah; Summit County, Utah; and Tooele County, Utah.  The Sevier County Seat is Richfield, Utah; the Summit County Seat is Coalville, Utah; and the Tooele County Seat is Tooele, Utah.