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

Pottawatomie County, Oklahoma; Pushmataha County, Oklahoma; and Roger Mills County, Oklahoma.  The Pottawatomie County Seat is Shawnee, Oklahoma; the Pushmataha County Seat is Antlers, Oklahoma; and the Roger Mills County Seat is Cheyenne, Oklahoma.