Benzene is an air toxic emitted from gasoline service stations, motor vehicle exhaust and fuel evaporation, the burning of coal and oil, and various other sources. In addition to being a common air pollutant, benzene may also contaminate water. Urban areas generally have higher ambient air concentrations of benzene than other areas.
5 (0.0015) µg/Nm3 (ppm)
|Time –weighted average||Averaging Time||Number of allowable exceedances|