Contract C20D: Contract C20D concerns the construction of approximately 2.6 km of rainwater mains of various diameters ranging from ø300mm to ø1000mm. It also includes the construction of visit/inspection wells as well as bilge wells of various types. The works include the demolition and reconstruction of an existing CHDPE well and its connection to it of two rainwater mains ø700mm and ø1000mm in diameter. Also included is the connection of rainwater mains of diameter ø500mm, ø600mm and ø700mm to the existing closed channel of Faneromeni Avenue at three points. Finally, the project includes the passage of part of the system, approximately 68m long through block 765 on Stalligrad Street. Workspaces are detailed in the attached plans.