Environmental Impact Assessment of Dredging and Reclamation Projects and other EIA projects executed by DHI Water & Environment DHI Water and Environment has extensive world wide experience in accomplishing and reporting environmental impact assessment (EIA). DHI Water & Environment offers a broad range of consultancy services and front-end technologies, software tools, chemical/ecotoxicological/biological laboratories and physical model test facilities as well as field surveys and monitoring programs. The Institute has a staff of approximately 450, the majority of whom are professional engineers and scientists with post-graduate qualifications and several years of consultancy and R&D experience. Projects have been conducted in more than 140 countries. The Institute has two offices in Denmark. Branch offices and representations are held in countries in Europe, North and South America, Africa, East Asia and Australia. For more information about DHI please visit our web site at www.dhi.dk Environmental Modelling The environmental regulations of the site in question most often require a complete documentation of the sediment deposition and environmental impact. The costs of this documentation can be reduced by the use of numerical modelling of the spreading and deposition of sediment in combination with spot control measurements in the field. Dredging spoil modelling is in most cases also applied to predict the biological- chemical impact of various dredging operation scenarios. DHI services within the field of environmental planning and management includes advanced mathematical modelling of: • Hydraulics in 1, 2 and 3 D (currents, waves, temp. etc.) • Eutrophication problems and oxygen depletion • Hygienic water quality, • Establishment of environmental criteria, • Sand and cohesive sediment • Transport and fate of contaminants Effects and Control The general concept applied in dredging and reclamation projects is based on a combination of: • Baseline investigations • Field monitoring campaigns during dredging • Biological, Ecotoxicological and chemical analysis • Environmental information and decision support system. • Reporting DHI has developed a concept on Feedback/Adaptive Management System based on these components. In areas where protection of sea grass, coral reefs, fishery etc. are of major concern in the assessment of possible negative environmental impacts from dredging and reclamation projects, this system provides a unique and cost effective tool for control and management. EIA and Environmental Licence DHI has been responsible for the full execution of EIA's for many projects around the world. It has also especially on Danish projects included a preparation of an Application for Environmental Licence for the projects. DHI has often been involved in the whole EIA process including negotiations with the authorities and different stakeholders. DHI Project References related to EIA Short Descriptions. September 20, 2005 EIA/RIAM Course in Dubai, 2003, 2004 and 2005, United Arab Emirates and Cuba 2003 The 5-days course is designed to provide a background on EIA with particular reference to the importance of the steps in the EIA implementation process. The course will also introduce the RIAM method for EIA that has been developed in Denmark by DHI Water & Environment. These parts of the course are very inter-active with a large degree of group practice during the course. Environmental Audit is covered through a lecture. Participants will be provided with a course manual providing handouts on each course element. In addition they will receive a book on RIAM, and a diskette (for PC only) with the RIAM REPORTER software. DHI has executed more than forty courses in Vietnam, Malaysia, and at DHI as a single course and as part of the three-months Integrated Environment and Water Management Course. Course in Shoreline and Environmental Management in Dubai, United Arab Emirates (2004) Course in Shoreline Management Guidelines involving the concept of Shoreline Management in the context of ICZM, understanding of coastal morphology and coastal classification, causes of coastal erosion and shoreline evolution, shore protection methods, concepts for artificial beaches and morphological impact assessment. Client: Arabian HydroInformatix (52561). Inland Waterway Transport for Serbia, Serbia (2004-2006) Master plan and feasibility study for improvement of inland waterways transportation on the Danube, Sava and Tisa Rivers within Serbia. DHI task was to carry out hydraulic modelling and EIA of the feasibility studies. Client: Witteven en Bos Consulting Engineers for European Agency for Reconstruction (52637). Esbjerg Harbour EIA and environmental license of A CONFINED DISPOSAL SITE IN ESBJERG HARBOUR FOR CONTAMINATED SEDIMENTS, Denmark (2003- 2006) The harbour of Esbjerg is situated in the Danish Wadden Sea of the North Sea that is characterised by high tidal variations with a high load of suspended sediments. This causes siltation of Esbjerg Harbour requiring yearly maintenance dredging of approximately 460,000 m3 of which 40,000 m3 is too contaminated to be dumped into the Wadden Sea. The harbour has proposed that a confined disposal site with an area of 26 hectare and a volume of 520,000 m3 should be constructed at the shallow part of the Wadden Sea in the harbour area. This site will have a capacity for about 20 years of disposal. The surplus water will be discharged to the sea. DHI is preparing an EIA and an application for the environmental license for the project. A mathematical model has been set-up concerning discharge of contaminants (heavy metals, antifouling agents and organic pollutants like PAH) from the disposal site. It includes a physical model describing the dispersal of pollutants from all pollution sources in the area so that the impact on the environment from all sources can be assessed. Based on the model an ecotoxicological assessment of the impact from the present situation and with the impacts from the discharge from the confined disposal site has been carried out. The local county has required that an alternative option with a continuation of the present drying fields expanded with 50% and with disposal of the dried sediment in a landfill 5 kilometres south of Esbjerg. A full EIA and environmental licence have been prepared for this option with similar, new studies as for the confined disposal site. All reports will be published and will be available for the public hearings as a part of the Danish procedure for approval of EIA. Client: The Danish Coastal Authority for Esbjerg Harbour (52663). EXPANSION OF KØGE HABOUR, DENMARK (2003 - 2004) Køge Community wishes to expand and improve the facilities of Køge Harbour and adjacent coastal recreational areas. There are problems with disposal of slightly contaminated soil in the Copenhagen area, so Køge Community has suggested that they could establish a deposit for contaminated soil in the northern part of Køge Harbour. The establishment of the deposit would finance the expansion of the harbour and at the same time improve the recreational areas at Køge Marina north of the harbour and the present beach south of the harbour. The proposed project includes the establishment of a deposit for the slightly contami nated soil and construction of new breakwaters around the expanded harbour. The extension of the marina includes development of a new harbour promenade by reclamation with dredged harbour sediment south of the marina. A new breakwater will be established north of the marina combined with new improved beach facilities. The beach south of Køge Harbour will be improved by reclamation with sand creating much better bathing conditions. The new beaches will be established with minimum impacts on the existing nature. DHI has been responsible for the establishment of the master plan for the project, preparation of the EIA and environmental license for the soil deposit. In addition, DHI has been responsible for the contact and negotiations with the responsible authorities. The DHI tasks has included the development of the project ideas, description of the regulatory conditions, preparation of the EIA with technical background documents and the environmental licence for the deposit. In addition, DHI has been preparing different documents to be used in the public hearings, has acted as secretariat for the established group of authorities and has established of a homepage for the project. The technical documentation has been prepared in cooperation with Niras Consulting Group and Hasløv & Kjærsgaard Architects A/S, with DHI undertaking coastal morphology, hydrography, hydrology, ecology and environmental issues. Client: Køge Community Amager Beach Park, Master Plan and Detailed Design, Denmark (2003-2005) Municipalities in Greater Copenhagen have decided to create a new beach park at the East Coast of the island of Amager, which is located very close to the centre of Copenhagen in a densely populated area. The present study is the detailed design phase, which also includes preparation of tender documents and construction supervision. DHI is subconsultant to NIRAS on hydraulic matters. Client: Greater Copenhagen Council for Amager Beach Park I/S (Amager Beach Park Partnership) (52560). Red Sea Course in EIA and Shoreline Management, Egypt (2002-2003) The assistance consisted in preparation of six guidelines and giving a course in Environ- mental Management and Shoreline Management as part of the "Regional and Integrated Environmental Impact Assessment Guidelines of the Red Sea Tourism Development Centre Projects, Lagoons and Beaches". Client: Egypt Tourism Development Authority (TDA) for TDA (52046). Remediation of the wastewater canal in Pancevo industrial complex, Serbia (2002- 2004) (French) The overall objective of the project is improved environmental and health conditions in the Pancevo area as well as of the Danube River by reducing or eliminating the hazardous substances present in the Pancevo wastewater canal. Client: UNEP - United Nations Office for Project Services (51928). New Mersey River Crossing, United Kingdom (2002-2003) Review of field data and model studies concerning the effect of currents on sands and silts in the Mersey estuary for the preparation of EIAs and permitting for a new crossing. Client: Gifford Services Ltd. for Halton Borough Council (51849). Jamuna - Meghna River Erosion Mitigation Study, Bangladesh (2001-2002) Feasibility study of investment project to mitigate the effects of river bank erosion threatening the Meghna- Dhonagoda Irrigation project and the Pabna Rural Development Project flood protection embankments in Bangladesh. Identifying and designing feasible low cost structural measures for erosion control, implementation of river bank management system. DHI as subcontractor to Halcrow for this ADB PPTA was responsible for River Morphology Analyses and Assessment, and for the preparation of an EIA, Category A. Client: Halcrow for Bangladesh Water Development Board (51589). Hydrographic EIA for offshore wind power plant at Nissum Bredning, Denmark (2001-2002) An offshore wind power plant of 14 MW is planned to be located west of Rønland. DHI has made a hydrographic study of the area in question, the effect on the hydrography and sediment transport of placing 7 turbines in the shallow area just west of Rønland Client: Vindenergi APS/Bonus Energi A/S (51510). Environmental Impact Assessment of a Marine Aqua-Culture Facility in the Great Belt, Denmark (2001) 51423 - Environmental Impact Assessment of a Marine Aqua-Culture Facility in the Great Belt Client: Musholm Lax A/S (51423). Maputo Port Privatisation & Rehabilitation Project, Environmental Impact Assessment, Mozambique (2000) (German) Maputo Port is going to be upgraded through the following activities: (i) Capital dredging of the main navigation channel in the port and the Maputo Bay area, (ii) refurbishme nt and replacement of port equipment and (iii) improvement and rebuilding of quays, warehouses, roads, etc. An Environmental Impact Assessment on the upgrading activities was carried out in accordance with the guidelines from the World Bank. The EIA focused on the dredging of the navigation channel. The study included a baseline description of the environmental condition in the area including sedimentology, marine biology and heavy metals. The heavy metal content of the sediment was measured in a field investigation and the potential pollution from the sediment handling was assessed. Model calculations estimated the extent of the spreading and sedimentation of dredging spoils. The potential environmental impacts on the marine life and the fisheries were assessed and a disposal site for the dredged material was proposed. An environmental action plan and a monitoring plan for the port operation were proposed. DHI – Water and Environment carried out the assessments concerning sediment and heavy metals as a subconsultant to NIRAS-Portconsult. Client: NIRAS Portconsult A/S (Consultant for Maputo Port Development Consortium Skanska International Civil Engineering) (50935). Horns Rev Wind Power Plant Preliminary EIA of Copper Pollution, Denmark (2000) A preliminary assessment of the impact of the copper from the wearing of the brushes in the wind turbines according to the guidelines given by the Ministry of the Environment. It was concluded that the copper discharge from the windmills is unlikely to have a critical effect on the surrounding environment. Client: ELSAM A/S (50635). Hydrographical and Sedimentological EIA at Horns Rev, Denmark (1999-2000) DHI has made an environmental impact assessment on hydrography, water quality and sediment transport when placing 81 turbine wind power plant on Horns Rev. Dredging scenarios have further been performed. The results of the investigation showed that the impact from the wind power plant was small. Client: ELSAMPROJEKT (50396). Læsø Offshore Wind Farm, Denmark (1999-2000) DHI has carried out an environmental assessment for TECHWISE in connection with their plan of constructing a wind power plant 15 km south of Læsø. DHI assessed the hydrography and sediment spill south of Læsø using MIKE 21 HD and PA. Client: Techwise (50396.2). MIKE 21 MT in the Northeast Caspian Sea, Kazakhstan (2003) AGIP KCO is planning to make a landfall for a pipeline coming from the offshore oil field Kashagan East in the NE Caspian Sea. DHI has assisted with the assessment of sediment spoils during the pipeline construction phase using MIKE 21 MT as well as giving input to the Environmental Impact Assessment to be prepared by KAPE. Client: AGIP KCO for KAPE (52213). Environmental Impact Assessment, 2D Hydrodynamics and Eutrophication Modelling, Denmark (2002-2003) Copenhagen Harbour is changing from an industrial harbour to a harbour with large recreational areas and new estates. As a part of this development Copenhagen Port A/S is planning a new estate in the central part of the harbour. This estate will consist of 7 small islands with narrow channels constructed for small boats. However, the authorities have asked for documentation that the water quality in these channels and the harbour basin behind the new estate will not cause any problems as e.g. bad odour, less transparency, etc. To this end DHI has applied an existing 2D hydrodynamic model and has run the model for half a year for evaluation of the exchange of water in the channels. Furthermore, the conclusions made on the background of the hydrodynamic model results were supported with an eutrophication model describing the effects on dissolved oxygen, transparency, primary production and sediment oxygen demand. Client: Copenhagen Port (52266). Qatar-Bahrain Causeway, Qatar (2001-2002) Marine Environmental Impact Assessment of a 45 km long fixed link between Qatar and Bahrain. Client: COWI for Minister of Municipal Affairs and Agriculture (51590.1). Environmental Impact and Exposure Assessment, Fornebu, Norway (2001-2003) Environmental economic evaluation of reuse of old runaways as road material at the former Fornebu airport in Oslo, Norway. Re-evaluation of risk assessment model. Client: Statsbyg (51682). Lillgrund Offshore Wind Farm, Sweden (2001) DHI has carried out an environmental impact assessment concerning hydrography, sediment spill and the zero solution on a planned offshore wind farm in Øresund. The blocking effect was found to be negligible. The spill from dredging operations will primarily be concentrated within the construction area. Client: EUROWIND (51388). Storebælt 2000, Ad hoc project management, Denmark (2000) The annual project management of the environmental impact assessment of the construction of the fixed link across the Great Belt was assigned to co-ordinate surveys, investigations, design of monitoring systems and interpretation of results from various projects, delivering data to the project management. The project management continued annually from 1993- 2001 with DHI as the responsible partner for biological monitoring. In joint-venture with COWI A/S Client: A/S Storebæltsforbindelsen (Great Belt Link) (50911). Risk Assessment, Fornebu, Norway (2000-2003) Fornebu, the former airport of Oslo, is to be converted into an attractive and environmental sustainable area for housing and commerce. 39 contaminated sites related to the airport will be cleaned up during the next four years. DHI is in charge of the environmental impact assessment and clean-up design. Soil treated biologically on site will be reused in the conversion of the flat airport area to hilly landscape with spectacular views of the Oslo Fjord area. The clean-up is made for Statsbygg in cooperation with NCC Norway and RGS 90 Client: NCC Norway for Statsbygg (50772). Environmental consequences of the construction of the City Tunnel, Malmö, Sweden (2000) Environmental impact assessment of the construction of an underground train tunnel. Client: VBB VIAK for City Tunnel Contractors (50365). Offshore Wind Power Plant, Lillgrund, Sweden (1998-2000) DHI has carried out an environmental impact assessment concerning hydrography, sediment spill and the zero solution on a planned offshore wind farm in Øresund. The blocking effect was found to be negligible. The spill from dredging operations will primarily be concentrated within the construction area. Client: Eurowind AB (50097).
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