Conceptual formulation, numerical implementation and experimental validation of a model for the movement of organic chemicals which are introduced into soils as nonaqueous phase liquids via surface spills or leakage from subsurface containment facilities were addressed. Relationships between fluid pressures (P), saturations (S) and permeabilities (k) were developed. Relative permeability-saturation relations are predicted from the scaled S-P function, which is assumed to reflect the pore size distribution of the medium. Procedures were developed for the direct measurement of fluid pressures and saturations in three phase systems. Validation studies indicated the k-S-P model provides a reasonable description of the system behavior under the imposed experimental conditions and may be satisfactorily calibrated using relatively simple procedures.

"November 1987." Final report - 10/84-10/87.