Bristol Bay Borough, Alaska, Air Pollution Sources

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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 Bristol Bay Borough, Alaska, and

Denali Borough, Alaska, give the percentage contributions from specific air pollution sources.  The Bristol Bay Borough Seat is Naknek, Alaska, and the Denali Borough Seat is Healy, Alaska.