Open Procedure, Pursuant To Art. 71 Of Legislative Decree No. 36/2023, For The Contract For The Drafting Service Of The Technical And Economic Feasibility Project, Drafting Of The Executive Design, Cds During The Design And Geological-Geotechnical Investigations, Relating To The Intervention Of The Refurbishment Of The Last Stretch Of Water Supply Of The Angle Ottana Bolotana And Noragugume