Facts and Figures

Client
Beheerorganisatie Slufter (Havenbedrijf Rotterdam + RWS)

Period
2016-2021

Location
Maasvlakte, Rotterdam

Contractor
Boskalis Beheer Slufter

Slufter, Rotterdam

Sedimentation of silt is a natural process in the slow-flowing waters of the harbors of Rotterdam and the rivers that feed into them, and constant dredging is needed to keep these areas navigable. In many cases the silt is contaminated which means that it cannot be disposed of at sea or spread over land.

In the early 1980s getting rid of the vast quantities of contaminated dredged sediments was becoming increasingly difficult. In response to this the large-scale storage depot (CDF) De Slufter depot was built in 1987, to the southwest of the Maasvlakte industrial zone. Boskalis Beheer Slufter (a cooperation of Boskalis Nederland bv and Boskalis Environmental bv is responsible for maintaining and managing the depot.

The depot consists of a high ring dike enclosing a pit area of around 200 hectares with a storage capacity of around 150 million m³. The dredged sediment brought to the depot - around two million m³ a year - are discharged by means of transshipment using a barge unloading suction dredger, discharged directly from hoppers or by truck.