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

Lyon County, Nevada; Mineral County, Nevada; and Nye County, Nevada.  The Lyon County Seat is Yerington, Nevada; the Mineral County Seat is Hawthorne, Nevada; and the Nye County Seat is Tonopah, Nevada.