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

Nueces County, Texas; Ochiltree County, Texas; and Oldham County, Texas.  The Nueces County Seat is Corpus Christi, Texas; the Ochiltree County Seat is Perryton, Texas; and the Oldham County Seat is Vega, Texas.