Eemskanaal and Oosterhornkanaal were contaminated with high concentrations of mercury. Remove all contaminated soil was our given assignment. The on spuds positioned dredger is equipped with a RTK-GPS controlled environmental grab to gain maximum accuracy. This ensures clean extracted material which is not the case when using a conventional grab.
The hopper barges transported all material to the special silt disposal location at ‘IJsseloog’ where a hopper dredger unloads the silt barges within 2-3 hours. After the barges were emptied from the contaminated soil, the remaining dumped garbage (motorcycles, bikes, etc.) was separately cleaned and transported to an authorised solid waste facility.
The dredging operations were complicated due to the excessive shipping traffic. Nevertheless, with the right project management, we also succeeded in completing the dredging operations within the agreed contract period, with no delay for other vessels.