Mixed Contract For The Drafting Of The Project, Management And Execution Of Works (Main Service), For The Implementation And Maintenance Of A Geo-Exchange System, As Well As The Necessary Adaptation Of The Boiler Rooms, Their Commissioning, Optimization In The Buildings Of The Manuel Muñoz Municipal Sports Center And The Luis Eceiza Public School In Eskoriatza Within The Framework Of The Recovery, Transformation And Resilience Plan Financed By The European Union - Next Generation Eu