The Port of Gothenburg is planning to deepen and widen navigable channels to allow it to handle larger container volumes. Tyréns has been given the assignment to produce the environmental impact statement regarding the measures for quay reinforcement and the application for an exemption for tipping dredging spoils at sea.
The project is being run as a collaboration between the Port of Gothenburg and the Swedish Maritime Administration, where the port is responsible for the quay reinforcements and handling the dredging spoils and the Swedish Maritime Administration is responsible for dredging the navigable channels. The goal is to have the complete supporting information for the Land and Environment Court by the summer of 2020.
"Our comprehensive experience and extensive competence in marine environments were the reason we were engaged as part of the project. The marine environment comprises a very complex system and it is necessary to understand the system in its entirety in order to be able to describe the details," Martin Hörngren, contract manager at Tyréns, says.
"We have carried out marine biological and marine geological investigations adjoining the port's current tipping site in order to assess whether the seabed is suitable for tipping dredging spoils."
Lena Holm, sediment specialist at Tyréns
During 2000-2004, a similar project was conducted in the Port of Gothenburg. However, since then the average number of ships has increased by around ten times. To make it possible to utilise these ships' maximum cargo capacity, it is necessary to deepen and widen the navigable channels. In connection with the deepening, which will generate more than ten million cubic metres of dredging spoils, the foundations of the approximately 1000-metre-long Skandiakajen will be reinforced.
Tyréns' port group is presently working on conducting additional investigations and with producing supporting information for the continuing consultative and licensing process.
"We have carried out marine biological and marine geological investigations adjoining the port's current tipping site in order to assess whether the seabed is suitable for tipping dredging spoils. The next steps are to conduct sediment investigations in the navigable channel, hydrographic surveys and current modelling to assess the risk for spread of the turbidity that arises during dredging and tipping," Lena Holm, sediment specialist at Tyréns, says.
The environmental impact statement and the exemption application for tipping will be part of a license application for the water activities, which will be applied for by the Port of Gothenburg and the Swedish Maritime Administration.
"The fact that we are several parties makes the project even more interesting. In exactly the same way as in other large infrastructure projects, the collaboration will be of crucial importance for the project's success. It is about holding an even and understandable dialogue with the project group throughout the whole process," Martin Hörngren says.