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Expanding a port, deepening a navigation channel or creating new land for development, introduces changes to our physical, social, economic and political environment. Changes may result from events during the construction process, or relate to the nature of the completed structure. Changes can be positive or negative, short-term or long-term, and may affect the immediate vicinity of the project or a larger geographical area. Predicting and assessing all possible effects of a planned dredging activity in a scientifically-sound and reliable manner is essential, so that appropriate control measures can be taken to avoid or mitigate unwelcome impacts. This book provides guidance for a complete holistic environmental evaluation procedure and for the design and implementation of environmental control measures. The book is of particular interest to engineers, government agencies and port authorities, as well as civil engineering consultants and contractors involved in planning and designing dredging, maritime infrastructure and fluvial projects.
This note describes a major US Army Corps of Engineers (USACE) policy initiative to define an appropriate and effective framework for developing and implementing the concept of a Long-Term Management Strategy (LTMS) within the national navigation dredging program. It presents a five-phase conceptual approach or framework for developing an LTMS with emphasis on lessons learned and a summary of selected field experiences. (MM).
Before the early 1970's, little was known of the environmental effects of dredging and dredged material disposal. As a result, the Congress of the United States recognized that there was no technical or scientific basis for regulating the disposal of dredged material. Consequently, proposed regulations would prove to be excessive and counterproductive. Therefore, the Congress directed the Corps of Engineers (Corps) to conduct a comprehensive research program to develop procedures for determining the environmental consequences of dredged material disposal and to develop new or improved methods of minimizing any adverse effects. The Corps was given the lead responsibility for conducting the research since, in the United States, the Corps is responsible for maintaining over 25,000 miles of waterways and 1000 harbors. In addition, Federal legislation requires the Corps to issue permits to regulate disposal of dredged material in waters of the U.S. The DMRP was conducted by the US Army Engineer Waterways Experiment Station (WES).