The contracting authority hereby invites tenderers to a competition for a contract for a water and sewage project for Sletteveien-Karstensens vei. The procurement includes approx. 2,200 metres pipeline ditch (separation) and a new pumping station for sewage on residential streets at Lisleby. The project also includes re-establishment of road lighting installations on parts of the stretch (Karstensens vei) and upgrade of the sidewalk in Lislebyveien. The project will be carried out as an execution contract in accordance with NS8405. A comprehensive description of the delivery is in the annexes to the tender documentation.