Amphos 21 offers its expertise in hydrogeology to project managers in order to minimize the disturbances of underground works due to the presence of groundwater. The construction of infrastructure can also have impacts on piezometric levels with harmful consequences both for the stability of the ground due to differential depressions, and for the protection of the ecosystems, which are dependent on groundwater. Amphos 21 offers a broad panel of services: Hydrogeological characterization of porous and fractured media to provide support before and during the monitoring of work. Interpretation of pumping tests in complex geological media. Forecast of the flowrates likely to be met during tunnel excavation. Study of drainage problems, piezometric drawdowns and the effects of barriers to the works underground (excavations, wells of large diameter). Numerical modeling of coupled problems (heat transport, , hydromechanical problems, etc.) in unsaturated and saturated zones).
