This thesis intends to consider the mechanisms of transportation and fate of contaminants in the subsoil considering a set of different geo-referenced methods: i) construction of a stratigraphic model, ii) bi-dimensional geo-statistical analysis through kriging, iii) interpretation using an integrated model of transportation and fate, simultaneously conceptual and quantitative. The main objective is to use a numerical dynamic model to evaluate the efficiency of a remediation system based on the pumping and treatment of groundwater, which can be used to hold the contamination plume. Data was partially collected at a real site, in a local Refinery. It is also intended that the results could be later used to compare with other remediation alternatives.
We use a three dimensional finite differences groundwater model, both for the steady state and the dynamics, allowing a detailed quantitative description of the groundwater flux and of the contaminant transport inside the refinery area. We also exploit software tools of the same type to evaluate the effectiveness of a potential new system of wells that could be used in order to control and keep the groundwater contamination inside the service area.