Negotiated Procedure Pursuant To Art. 50 Paragraph 1 Lett. E) Of Legislative Decree N. 36/2023, Aimed At The Assignment, On Three Tender Lots, Of The Special Waste Disposal Service Called C.E.R. 15.01.02 (Plastic Packaging), C.E.R. 15.01.06 (Packaging In Mixed Materials) And C.E.R. 17.09.04 (Mixed Waste Of The Construction And Demolition Activity, Other Than Those Referred To In The Items 17 09 01, 17 09 02 And 17 09 03) From Companies In The Provincial Territory Of Sondrio.