Installation and monitoring of the whole geotechnical and topographical instrumentation. About 125 surface marks, 161 targets, 53 bars (strips) on buildings, 4 piezometers, 5 extensometer gauges, 3 inclinometers, 43 convergence sections and 24 strain gauges have been installed. Preparation of all all the geological cartograpy (mapping) and geotechnical characterisation of the excavated surfaces. Preparration of daily, weekly and monthly follow-up reports.