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

Elko County, Nevada; Esmeralda County, Nevada; and Eureka County, Nevada.  The Elko County Seat is Elko, Nevada; the Esmeralda County Seat is Goldfield, Nevada; and the Eureka County Seat is Eureka, Nevada.