Tønsberg Municipality must upgrade the central streets in Tønsberg as part of retrieving water out of sewer pipelines and managing it on the ground by infiltrating it into the ground, so it will naturally find its way to the sea.

Approx. 14 000 m2 stone will be delivered to Tønsberg, consisting of main-street stone and cobblestone, in different sizes and qualities. The delivery must be implemented over a period of approx. nine years, with commencement in autumn 2019.