The Subject Of This Contract Is "Cleaning Wells Of Athens Municipality Water Hydroes" For: (A) The Constant Cleaning Of The Rainstorms, Which Will Be Indicated In All Municipal Communities (Dk) Of The Municipality Of Athens, With The Aim Of Smoothly Concentrated And Runoffs And Prevent Flooding, And Preventing Floods, (B) The Control Of The Operation Of The Rainstorms Of The Rainstorms In Order To Achieve The Drainage Of The Rainstorms By The Wells Of The Centers To The Central Recipients And (C) Cleaning The Drainage Ducts Of Small Rainstorms In Parks And Squares, As Well As The Fountains Where It Is Considered Necessary. Cleaning And Blockage Work Will Begin After Gradual Removal Of The Waters Within Them To Avoid The Creation Of A Hydraulic Blow To The Central Conductor