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Environmental Risk Assessment and Dredged Material Management: Issues and Application

Abstract : Evaluating the potential environmental consequences associated with dredging and dredged material disposal is a difficult task. Scientific advancements have made possible the collection of large amounts of complex technical information. The dredged material manager must often rely on "best professional judgement" to weigh and balance among multiple and sometimes conflicting lines of evidence to reach a decision, and each decision involves a finite level of uncertainty. How best to utilize this complex technical information and what tools are available for developing risk-based estimates and evaluating uncertainty for the dredging program were the focus of the workshop discussions reported herein. The workshop was attended by 78 invitees representing Corps field elements, other Federal agencies, industry, and academia. Participants represented a broad range of stakeholders and included permit applicants, dredged material managers, and risk assessors.