Nez Perce County, Idaho, Air Pollution Sources A

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Abstract: The Environmental Protection Agency (EPA) compiles data on emission tonnages of air pollutants for US counties.  US Air Quality Gradebook ("AirGrades") source sheets such as this one for

Nez Perce County, Idaho, give the percentage contributions from specific air pollution sources.  The Nez Perce County Seat is Lewiston, Idaho.