Ever since the 1920s, the area known as the ‘silo quay’ on Odderøy has been a key part of the business of the port in Kristiansand. The quay was vital to the transatlantic traffic, both when the Norwegian America Line ships carried grain to the States and when the South America Line boats took salted cod to South America. Now the area is known by a different name – Kanalbyen – and is earmarked for homes and business premises in a large-scale urban development project.
Port activities also caused some parts of the site to be polluted, and measures are being taken to reduce the risk to the environment and to people from exposure.
COWI is providing an analysis of contamination in the soil and drawing up action plans for soil and sediments over an area of approx. 32,000 m².
COWI is providing plans for treating sediments in the sea and in the soil on land.
Alternative uses for the materials in the area being treated were a major part of the project.
The materials are sorted before the pure fractions are removed from the site for use elsewhere.
Lighter contaminated materials have been used for suitable purposes on the site itself and have helped to keep the project costs down.