Sediment Dredging at Superfund Megasites ... - Emsus.com

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Improving Future Decision-Making• The large spatial scale and long remedial timeframes ofcontaminated sediment megasites make it difficult topredict and quantify the human health and ecosystemrisk-reduction benefits achieved by isolated remediationsin a large-scale watershed.• The complexity and heterogeneity of large-scalemegasites suggest that a variety and combination ofremedial approaches will often be appropriate.• The committee’s retrospective analysis on ‘what worksand why’ in sediment remediation is an essential part ofa shared experience among regulators, practitioners,and the public. This type of effort needs to be ongoing.
Improving Future Decision-Making• An adaptive-management approach is essential to the selectionand implementation of remedies at contaminated-sedimentmegasites where there is a high degree of uncertainty about theeffectiveness of dredging.This approach:– replaces the paradigm of establishing all remedial actionsprior to implementation.– focuses on achieving objectives during a specified timeframe.– is based on the use of monitoring data from pilot studies andongoing remediation.– uses data collected during remedial operations to assess andimprove remedies to optimize progress towards remedialgoals.
Page 1 and 2: Sediment Dredging atSuperfund Megas
Page 3 and 4: Reviewers of the Final ReportReview
Page 5 and 6: Outline• Introduction• Evaluati
Page 7 and 8: Committee’s Evaluation ofDredging
Page 9 and 10: Evaluation of Dredging Effectivenes
Page 15 and 16: Range of Experiences at Dredging Pr
Page 17 and 18: Manistique River and Harbor•Remov
Page 21: Monitoring at Sediment MegasitesREC

Sediment Dredging at Superfund Megasites ... - Emsus.com

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