Deterministic and stochastic theory of flow and contaminant transport in saturated and unsaturated heterogeneous porous media Design and testing of new methods and devices for measuring of physical and chemical porous media properties dipole-flow test transient flowmeter test dipole-flow test with a tracer Recovery of contaminant release histories from present plume distributions (ill-posed problem) Analytical methods, numerical methods, sensitivity analysis Subsurface bioremediation