Supervision of detailed geotechnical site investigations for a damsite, 16 km waterways and balancing weirs. The supervision scope comprised of verifying the reliability of the in situ tests undertaken on site, monitoring the drilling process and ensure core recovery and core quality are inline with geotechnical requirements, core and soil sampling and logging. Double packer testing was conducted in every borehole and Lugeon values were interpreted. Falling head tests were executed in trenches close to the weirs. All investigations and laboratory results were presented in a factual report with supporting drawings and diagrams.