Return to Washington Air Pollution Sources Homepage
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 Franklin County, Washington, and |
Garfield County, Washington, give the percentage contributions from specific air pollution sources. The Franklin County Seat is Pasco, Washington, and the Garfield County Seat is Pomeroy, Washington. |