Drilling one borehole (with depth of 5-10 m) at each site of tower installation; taking soil and water samples from the boreholes and performance of their laboratory analysis; preparation of geotechnical report (geotechnical investigations for installation areas of 56 towers has been performed up to date); inspection of tower foundation design provided by the client and performance of expert examination; supervision of arrangement of tower foundation and tower installation works during construction activities; laboratory testing of concrete test cubes, inspection of tower verticality, inspection of certification of the materials