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Control Programme Part 3 – Surface Water
The construction of the West Link will require re-routing and excavation of watercourses, for example Rosenlundskanalen. In situations where watercourses are affected, we inspect and document the water quality and wildlife found in the waterbed.
Programme to protect the city's aquatic environments
Protecting the natural and aquatic environments affected by the West Link's construction is considered a high priority. To achieve this we collaborate with the County Administrative Board and the City of Gothenburg. The West Link Project has developed several inspection programmes, for example, in regard to surface water. The aim of the programmes is to show how we are working to protect the natural environment found along the stretch of the West Link.
Measures and inspections
Excavation in watercourses can cause turbidity and may give rise to the release of contaminants contained in the waterbed. We have therefore conducted tests at our planned work areas, and the results of these constitute the basis for how we carry out the construction of the West Link. We may, for example, use so-called geotextiles to reduce turbidity and the spread of contaminants outside the work area, or employ an environmental dredging bucket.
Before the water moves on from the excavation site to recipients, we purify it and take samples of surface water to check the water quality. We also measure the water level to ensure that the work is not damming up watercourses elsewhere in the city.We commenced these inspections at an early stage in order to be able to monitor how the construction of the West Link affects watercourses. If any changes are observed, we can, for example, increase the number of tests conducted, purify the water in several stages or modify our working methods.