Abstract
The several types of data used in this paper are : "geophysical data of four (4) drilling of 200 m depth, piezometric data of four (4) drilling, data from four (4) drilling from 50 to 98 m, the data of permeability test". With this data base, the geological and geophysical studies allowed to discriminate different geological layers on the site of study. Regarding the groundwater aquifers, the hydrogeological analysis was made. The results obtained by these approaches are very satisfactory. Indeed, the results obtained in this study show that the level 5, comprised of clays with power ranging from 22.5 to 42.5 m is highly developed in the area. This clay formation has very low permeability. The depth of ground water varies for 13.84 to 45.37 m, with an average of 30.83 m. In addition, the areas which are most vulnerable to pollution are the drillings "F4" and "F1" located in the bottom of the pit, with respectively 13.84 and 30.83 m of water depth. These shallow waters may be contaminated by leachate from the waste and require special attention.