Geological-geomechanical survey of excavation fronts aimed at classifying the rock mass according to the GSI Geological Strength Index system (Hoek et al.) and GK "di Capitolato" (published in supplement no. 4 of B.U. no. 21/I-II of 27.05.2014). Geological consultancy on site during the execution of works and geotechnical monitoring activities. Periodic monitoring of hydropotable sources, before, during and after completion of the works.
