Smith County, Texas, Air Pollution Sources B

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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 Smith County, Texas, and

Somervell County, Texas, give the percentage contributions from specific air pollution sources.  The Smith County Seat is Tyler, Texas, and the Somervell County Seat is Glen Rose, Texas.