- English
- ePUB (mobile friendly)
- Available on iOS & Android
About this book
Some of the nation's estuaries, lakes and other water bodies contain contaminated sediments that can adversely affect fish and wildlife and may then find their way into people's diets. Dredging is one of the few options available for attempting to clean up contaminated sediments, but it can uncover and re-suspend buried contaminants, creating additional exposures for wildlife and people. At the request of Congress, EPA asked the National Research Council (NRC) to evaluate dredging as a cleanup technique. The book finds that, based on a review of available evidence, dredging's ability to decrease environmental and health risks is still an open question. Analysis of pre-dredging and post-dredging at about 20 sites found a wide range of outcomes in terms of surface sediment concentrations of contaminants: some sites showed increases, some no change, and some decreases in concentrations. Evaluating the potential long-term benefits of dredging will require that the U.S. Environmental Protection Agency step up monitoring activities before, during and after individual cleanups to determine whether it is working there and what combinations of techniques are most effective.
Frequently asked questions
- Essential is ideal for learners and professionals who enjoy exploring a wide range of subjects. Access the Essential Library with 800,000+ trusted titles and best-sellers across business, personal growth, and the humanities. Includes unlimited reading time and Standard Read Aloud voice.
- Complete: Perfect for advanced learners and researchers needing full, unrestricted access. Unlock 1.4M+ books across hundreds of subjects, including academic and specialized titles. The Complete Plan also includes advanced features like Premium Read Aloud and Research Assistant.
Please note we cannot support devices running on iOS 13 and Android 7 or earlier. Learn more about using the app.
Information
Table of contents
- COVER PAGE
- THE NATIONAL ACADEMIES
- COMMITTEE ON SEDIMENT DREDGING AT SUPERFUND MEGASITES
- BOARD ON ENVIRONMENTAL STUDIES AND TOXICOLOGY1
- OTHER REPORTS OF THE BOARD ON ENVIRONMENTAL STUDIES AND TOXICOLOGY
- Preface
- Acknowledgment of Review Participants
- Abbreviations
- Contents
- BOXES, TABLES, AND FIGURES
- Summary
- 1 Introduction
- 2 Sediment Management at Superfund Megasites
- 3 Effectiveness of Environmental Dredging in Reducing Risk: Framework for Evaluation
- 4 Evaluation of Dredging Effectiveness: What Has Experience Taught Us?
- 5 Monitoring for Effectiveness: Current Practices and Proposed Improvements
- 6 Dredging at Superfund Megasites: Improving Future Decision-Making
- Appendix A Statement of Task for the Committee on Sediment Dredging at Superfund Megasites
- Appendix B Biographic Information on the Committee on Sediment Dredging at Superfund Megasites
- Appendix C Summary of Remedial Action Objectives, Cleanup Levels (Numerical Remedial Goals), and Their Achievement at Sediment-Dredging Sites