Notice Of Expression Of Interest Aimed At Identifying Economic Operators To Invite To A Direct Awarding Procedure Pursuant To Art. 50, Paragraph 1 Letter. B) Legislative Decree. 36/2023 Of A Fish Sampling Service (In The Maggiore And Ceresio Lakes) And Water Sampling (In The Maggiore Lake) As Part Of The Interreg Italy Switzerland 2021-2027 Project Called "Sai Salvaguardia Acque Insubriae. Safeguarding The Lakes, Protecting Life: Innovation And Nature In Action”.