International Dredging Review

International Dredging Review

The CEDA Environmental Steering Committee tackled a 17-item agenda in several hours on Friday Nov. 21 at the Rai Congress Center Amsterdam following the CEDA Dredging Days. The group is charged with proposing environmental policy for the Central Dredging Association and representing the dredging community in other groups where dredging policy is studied or prescribed.

The committee members are: Anna Csiti secretary/manager; Neville Burt Hydraulics Research Wallingford England chairman; Harald Koethe Federal Institute of Hydrology Germany; Heinz Glindemann Port Authority of Hamburg Germany; Gerard H. van Raalte Hydronamic (Boskalis) the Netherlands; Erik C. Van den Eede Waterways and Maritime Affairs Administration Belgium; Nick Bray Dredging Research Ltd. England; and Hugo der Vlieger Silt BV Belgium. Ray Bergeron of Cable Arm Clamshell USA attended the meeting as a guest.

The purpose of ESC’s activities is contained within the foreword to the CEDA/IADC (International Association of Dredging Companies) publication series entitled Environmental Aspects of Dredging:

“Dredging is a necessary activity in man’s development. In the right circumstances it may also be a very useful tool for remedying past environmental interference. However by its very nature the act of dredging and relocating dredged material is an environmental impact. It is therefore of the utmost importance that we should be able to determine whether any planned dredging will have a positive or negative impact on our environment”

Included in the series are: Guide 1 Players Processes and Perspectives by Jan W. Bouwman and Hans P. Noppen of Aveco bv the Netherlands; Guide 2: Conventions Codes and Conditions Marine Disposal and Land Disposal by Neville Burt Caroline Fletcher and Eleni Paipai of Hydraulics Research Wallingford England; Guide 3: Investigation Interpretation and Impact by Richard K. Peddicord Ph.D. and Thomas M. Dillon Ph.D. of EA Global Inc. (the international subsidiary of EA Engineering Science and Technology Inc. Baltimore Maryland.) The fourth book Machines Methods Mitigation by Jos Smits of International Marine and Dredging Consultants (IMDC) Belgium will be available in April 1998. Three more books are planned in the series. Guides five through seven will describe such topcs as uses of dredged material placement and treatment effects of dredging projects and review of pilot projects. (The books are available from CEDA for NLG 30. Members of CEDA EADA WEDA and IADC receive a 25 percent discount.)

Text for a booklet entitled “Dredging – The Facts” to be published in time for WODCON XV was distributed at the meeting. This is a joint project of the CEDA ESC and the PIANC (Permanent International Association of Navigation Congresses) Permanent Environmental Commission (PEC.) It is a guide for those who have had little to do with dredging but are charged with making decisions on dredging. It will include an explanation of dredging equipment placement sites beneficial uses treatment methods reference lists and sources of other dredging information all with illustrations.

A provisional plan for the WODA (World Organization of Dredging Associations) Environmental Day sponsored jointly by the WEDA (Western Dredging Association) CEDA and PIANC environmental groups was presented. The schedule contains talks on dredged material management public perspectives risk assessment bio-accumulation testing beneficial uses of dredged material dredging and decontamination technologies fisheries management and dredging from the North American and European perspectives and partnering. Committee members responsible for the day are Dr. Robert Engler chair of the PIANC Environmental Commission Craig Vogt chair of the WEDA Environmental Committee and Neville Burt chair of the CEDA ESC.

The CEDA WEDA and EADA (Eastern Dredging Association) environmental groups will agree on a joint environmental policy statement to be officially announced at WODCON XV (the fifteenth World Dredging Congress) in June. The committee discussed the draft of the WEDA statement noting that the word “nation” is used throughout the document ignoring countries besides the United States belonging to the Western Dredging Association.

A half day workshop on dredged material management will be presented by CEDA at the Cape Town Workshop on Waste Management and Marine Pollution Prevention in Southern and Eastern Africa on April 1 through 4 1998. CEDA has committed to support this workshop which is organized by the International Maritime Organization (IMO.) D. Bilse of Portnet South Africa who will speak on local dredged material disposal issues for the CEDA portion of the program will join Neville Burt and Dr. L. Murray of CEDA. The objective of the workshop is to provide guidance in implementing the Waste Assessment Framework of the London Convention with delegates from 18 African countries invited and an expected 70 to 80 participants.

In 1991 the Oslo and Paris Conventions for the Prevention of Marine Pollution (OSPAR) drafted guidelines for management of dredged material which included sections on assessing and managing dredged material and on monitoring disposal operations. Revisions were mandated in 1996 and presented at the OSPAR meeting in Brussels in September 1997. Copies of the revised guidelines were discussed by the ESC; the final vote on the guidelines will be held at the OSPAR ministerial meeting to be held in Lisbon Portugal in July 1998.

OSPAR is a regional convention for the northeast Atlantic and the North Sea. CEDA has an observer status as a Non Government Organization (NGO) in OSPAR and in the London Convention. The London Convention has more than 70 member countries and recognized the contribution CEDA could make to the international legislation. CEDA representatives were invited to join the working group that drafted the London Convention 1996 Dredged Material Assessment Framework (DMAF.)

The ESC meets two to three times per year depending on the issues requiring their attention said Anna Csiti. She encourages people to look at the CEDA website for more information about the group.

The 1998 meetings will be in Denmark at the Danish Institute of Hydrology (DHI) on April 23 and 24 and at the Port of Hamburg Germany on November 5 and 6.