Author(s)

J.F. Sykes, A.G. Merry and J. Zhu

Abstract

Many sites that are contaminated with non-aqueous phase liquids include the distribution of these materials in the unsaturated zone with the greatest saturation often occurring within meters of the ground surface. Reductions in the NAPL saturation occur as a result of drainage, dissolution and volatilization. These processes can be highly temperature sensitive. Seasonal changes in the temperature at the ground surface can also result in the development of a frozen layer. During the winter season, this layer reduces the dissipation of soil gas to the atmosphere. In the spring, the thaw of this layer and downward drainage of melt water will contribute to the NAPL dissolution and redistribution. The prediction of NAPL distributions in soil must therefore cons

Keywords