Abstract
Contamination problems in soil and groundwater are major rising problems in many places. In this paper, oil contamination is the focus and how to quantitatively estimate the hydraulic characteristics of water, gas and oil (3-phase liquid) in porous material is discussed. Laboratory experiments were carried out using a simplified method based on the Green-Ampt model and a complex method based on the instantaneous profile method by using gamma rays. A comparison of the results determined from both methods was discussed. The limitation of the Green-Ampt method in nearly saturated conditions is also mentioned.
