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The pipeline network for water and sewage in the area Bakkegata, Bjerklundveien, Flatenveien, Museumsveien, Grøtvedgata, Grøttboveien, up to the northern junction with Trøgstadveien as well as some routes down towards Kolstadbekken.  The aim of the project is to reduce the load on Kolstadbekken, improve the water quality in the recipient and at the same time wind up existing overflow manholes which currently contribute to undesired emissions with large amounts of precipitation. The works include the establishment of new water and sewage pipelines, including separation of service pipes. In addition both municipal and private roads affected by the excavation work shall be re-established. The project also includes electrical works for the existing street light installations, including replacement and adaptation of cables, foundations and fittings, as well as laying cable conduits for future pipes.

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