Key words: air pollution, aquifer, cargo, case history, depth, diesel fuel, economic factor, ground water, heating fuel, hydrocarbon, in situ, injection well, meeting paper, motor fuel, motor gasoline, motor vehicle, oil waste, petroleum fraction, physical property, physical separation, pollution control, pollution control equipment, service station, soil (earth), soil pollutant, soil pollution, stripping, subsurface, thermodynamic property, unleaded gasoline, vapor pressure, volatile organic compounds, waste material, water pollutant ASTM.