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

Riley County, Kansas; Rooks County, Kansas; and Rush County, Kansas.  The Riley County Seat is Manhattan, Kansas; the Rooks County Seat is Stockton, Kansas; and the Rush County Seat is LaCrosse, Kansas.