The geotechnical investigation of the CORSSA site included the drilling of six boreholes down to depths of 6m, 14m (2 boreholes), 31m, 60m and 178m, and the in situ (NSPT and water table measurements) and laboratory tests on intact and remolded soil samples. Resonant column dynamic tests and a geophysical campaign involving borehole (Cross-hole, Down-hole), as well as surface surveys (seismic reflection) were contacted to obtain information on the soil stratigraphy and the dynamic properties of the soil (V_P and V_S profiles, shear modulus G₀ at low strains, G/G₀-γ-D% curves).