The Object Of This Contract Is The Material Execution Of The Project Of Naturalization And Landscape Integration Of The Final Stretch Of The Alella Stream In The T.M. Del Masnou Of The Tourism Sustainability Project In Destination "Maresme Eurovelo 8". Extraordinary Call 2023. Recovery, Transformation And Resilience Plan. Financed By The European Union - Nextgenerationeu, With The Exception Of The Signaling Part, Which Is The Subject Of A Separate Tender.