Background and purpose Færder municipality plans to separate the old AF system to waste water and surface water as well as lay new water pipelines in the centre of Tjøme, stage 3. The work will include excavation work, rock drilling and renovation of the hose. The contract work is divided into two phases; an interaction phase first and then the execution phase. This contract includes all works with new water and sewage installations as shown on the attached drawings, as well as the re-establishment of affected roads. There shall be continual operation of the existing pipeline installations all days throughout the entire construction period. The pipeline route and manhole placement are in the plans that have been prepared. It is anticipated that the ditches will consist of both uncompacted trenches and rock trenches. The trench depth varies from 2.0 to 3.0 metres, with specific locations up to 5.5 metres. The works mainly comprise: approx. 2,170 m complete main trenches of varying width and height. delivery/laying of approx. 1,730 m surface water pipelines delivery/laying of approx. 1,750 m sewage sewage delivery/laying of approx. 2,170 m water pipelines salvage drilling for surface water of approx. 95 m renovating the hose of approx. 480 m 28 complete wastewater manholes 27 complete surface water manholes 23 complete water manholes re-establishment of roads facilitating space for temporary stores. The work will be carried out as a general contract/main contract. Building form 8405 A "Form for contract for the execution of building and construction work" shall be used.