Tasks That Must Be Performed During The Contract Period In The Controlled Deposit Of Closed Waste And Out Of Use Of Serrallarga, Which Are Described In The Specifications Of Technical Conditions, And In General Features, They Are The Following: • Control Of The Level Of Leachates Generated In The Collection Raft And In The Pre-Vis Collection Wells. • Personally Collect The Water Samples Of The Pond Of Leachate And The Piezometers Pe-Editrals And Take Them To The Analysis Laboratory Indicated By The City Council. • Keep Functional The Rainwater Collection Gates Of The Tank Platforms • To Keep Track Of The Maintenance Of The Slopes Of The Entire Platform, As Well As Any Surface Alteration That Can Be Detected. Control The Vegetation Of The Park And Picnic Area Platforms, Using Clearing. • The Cleaning Of Waste That May Appear Inside The Controlled Tank And The Emptying Of The Bins.