Dredging is an integral part of many projects in the marine environment, Both capital and maintenance costs associated with dredging can be large and will often be a key factor in the feasibility of a given project. Design optimisation to minimize both capital dredging and, often in particular, maintenance dredging requirements should therefore be an integral part of the initial project design.

Whether for ports and shipping channels, trenching of pipelines, sand sourcing for reclamations or other types of projects fines generated from dredging may pose a hazard to sensitive habitats, water intakes or other receptors when released into the marine environment. Growing concern over the potential impacts to the marine environment from dredging has emphasised the need for a comprehensive assessment of both short term and long term effects of the dredging as well as management of the spill to minimise the environmental risks and to obtain environmental approval for the project.

DHI has a long history in Malaysia and the region of providing expert assistance with both feasibility assessments and design optimisation as well as conducting full Environmental Impact Assessments and Environmental Monitoring and Management through project implementation for small and large dredging programmes.

DHI has developed a range of numerical modelling tools, field survey techniques and management methods that have been effectively used on numerous dredging projects both in Malaysia and throughout the region. DHI Malaysia has in-house the expertise required to carry out a full range of dredging associated studies ranging from feasibility over EIA to environmental management. DHI is a recognised expert within environmental management of dredging programmes with EIA consultants registered with the Department of Environment Malaysia, Environment Protection Department Sabah and the Natural Resources and Environment Board Sarawak, and is assisting authorities in developing guidelines for EIA preparation and dredge spill management.