Kinder Morgan Production Company, LLC, Respondent owned or operated an oil field production facility known as the Sacroc Unit Lease, located in Scurry County, Texas. At all revelant times, the facility acted as a point source of a discharge of pollutants , speicifically oil field brine and oil to the receiving waters of Ennis Creek, Deep Creek, and a tributary of Ennis Creek, which is considered a water of the United States .