Guidance for the Development of Action Lists and Action Levels for Dredged Material, 2009 Edition (I538M)

Published Date

October 2009

Guidance for the Development of Action Lists and Action Levels for Dredged Material, 2009 Edition (I538M)

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The document assists regulators and policy makers on the selection of Action Lists and the development of Action Levels for dredged material proposed for disposal at sea. An Action List is a set of chemicals of concern, biological responses of concern, or other characteristics that can be used for screening dredged material for their potential effects on human health and the marine environment.

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Following the decision, in 2002, to prepare technical guidance on the development of an Action List under the Generic Guideline s that would assist Contracting Parties in developing their own National Action Lists and address the potential effects on human health and the marine environment, the Scientific Groups under the London Convention and Protocol developed the “Guidance for the Development of Action Lists and Action Levels for Dredged Material” in working and correspondence groups, initially led by the United States and subsequently by Canada. In May 2008, the Scientific Groups completed their work and the governing bodies adopted the Guidance in October 2008.

During the developmental work, many delegations and representatives from observer organizations contributed to the development of the Guidance. In particular Australia, Canada, Islamic republic of Iran, Ireland, Japan, the Netherlands, Republic of Korea, United Kingdom, United States, Greenpeace International and the OECD are thanked for their valuable contributions.

The document assists regulators and policy makers on the selection of Action Lists and the development of Action Levels for dredged material proposed for disposal at sea. An Action List is a set of chemicals of concern, biological responses of concern, or other characteristics that can be used for screening dredged material for their potential effects on human health and the marine environment. Action Levels establish thresholds that provide decision points that determine whether sediments can be disposed of at sea.

While the Guidance is designed to assist with implementation of requirements under the Convention on the Prevention of Marine Pollution by Dumping of Wastes and Other Matter, 1972 and its 1996 Protocol, the guidance provided is general and could be applied to the assessment of dredged material under other instruments. The guidance does not, however, cover the assessment of other wastes or other matter allowed under the London Convention and Protocol.

Foreword

 

Executive Summary

 

1 Introduction

1A Purpose of guidance

1B What are action lists and action levels?

1C Why are action lists and levels important?

1D Other wastes or matter

1E Action lists and levels as part of the framework for assessing dredged material for disposal at sea

 

2 Selection of a national action list

 

3 Establishing upper and lower benchmarks

3A Reference-based approaches

3B Effects-based approaches

3C Setting benchmarks

3D Strengths and weaknesses of various derivation approaches

 

4 Approaches to setting action levels

4A Pass/fail approach to interpreting action levels

4B Weight-of-evidence approach

 

5 Possible formats for upper and lower action levels

5A Lower action levels

5B Upper action levels

5C Between the upper and lower actions

 

6 Conclusions

 

7 References

 

8 Glossary

 

Appendix – Approaches to setting benchmarks and action levels

1A Reference-based approach

1B Effects-based chemical action levels

1C Biological effects-based action levels

1D Other approaches

Title: Guidance for the Development of Action Lists and Action Levels for Dredged Material, 2009 Edition (I538M)
Edition: 2009
Number of Pages: 178
Product Code: MM1201K
ISBN: ISBN 13: 9789280115048, ISBN 10: 9280115049
Published Date: October 2009
Weight: 0.50 kg
Author: IMO

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