Marsh Creation Impacts - Mississippi River Delta
Significant conversion of marsh to open water is occurring in the Mississippi River Delta. Evidence is presented that marsh is more valuable to fish and wildlife resources than open water;...
Turbidity Generated by a Model Cutterhead Dredge
The study of turbidity generation indicates that, in general, turbidity increases with an increase in the cutter speed and an increase in the cutter swing velocity. A silt curtain deployed...
Computer Models for Dredged Material Disposal Planning
Short term and long term planning for the disposal of dredged material can be significantly enhanced using state-of-the-art computer modeling. Computerized mathematical models can be constructed...
Planning and Management of Disposal Areas
Passage of the Clean Water Act of 1977 required federal agencies to obtain either water quality certification or a waiver from the state for the discharge of dredged or fill material into...
The National Dredging Data Management System
The ADDAMS computer program is a collection of user-friendly computer models for planning, designing and managing confined disposal areas. Models which can be used to determine the size...
The Maryland Dredge and Fill Permit Process Handbook
Safe navigation in the waters of the State of Maryland is made possible, in part, by the continued maintenance dredging of the State's many ports and waterways. Dredging projects...
Toxic Contaminant Uptake in Dredged Sediment Marshes
Dredged sediments from the proposed enlargement of the Lower Mississippi River from Venice, Louisiana to the Gulf of Mexico would be primarily utilized to create up to 28,000 hectares...
Confined Disposal in the Canadian Great Lakes
The dredging activities of Public Works Canada, Ontario Region, extend over most of the Canadian Great Lakes thereby significantly impacting on its environment. The paper presents a brief...
RCRA EP Toxicity Test Applied to Dredged Material
A set of 25 Great Lakes harbor sediment samples were subjected to bulk sediment analysis and the EP Toxicity Test. Based on the results of this pilot study, there appears to be little,...
Need for Long-Term Planning for Dredged Material Containment
The biological, chemical and physical integrity of our nations waters are protected, in part, by the provisions of the Clean Water Act. This Act provided for the development of guidelines...
Solving Channel Maintenance Problems at Reads Landing, MN
Dredging a sediment trap at the delta of the Chippewa River is being tested as a channel maintenance technique. It's designed to improve the Corps of Engineers predictive...
Management of Dredged Material Disposal Areas
Procedures and techniques that have been used successfully in Charleston, S. C. for planning management of disposal areas are outlined and explained. The following are some of the issues...
Habitat Development Using Dredged Material
Over the past eleven years, a number of environmentally and economically acceptable beneficial uses have been tested and developed using dredged material substrates. This work has primarily...
Case History: North Slope Alaska Hydraulic Dredging
Alaska's North Slope Borough, with the aid of dredging machinery consultant Michael Weston, and geotechnical consultant Rittenhouse-Zeman & Associates, has pioneered...
Surface Runoff Water Quality from Contaminated Dredged Material Placed Upland
Bioassay and associated tests have been developed and are being refined to assist in the evaluation of the environmental impact of dredged material disposal alternatives. Simulated rainfall-surface...
Evaluating the Water Quality Significance of Dredged Sediments
In the mid-1970s, the Corps of Engineers and the US EPA developed several laboratory evaluation procedures, the elutriate test, bioassay/toxicity tests, and bioconcentration tests, to...
Environmental Management Problems of Dredged Material Islands in the Tampa Bay Area
Between 1977 and 1982, four new islands were created in Hillsborough Bay as part of the Tampa Harbor Deepening Project. The islands are now 3-7 years old. They exhibit striking differences...
Safe Landfilling of Contaminated Dredging Spoil
This paper deals with the assessment of the expected emissions of toxic substances from highly contaminated harbor dredged material. The material in question arises from the canal between...
Seasonal Restrictions on Bucket Dredging Operations
Seasonal restrictions are sometimes imposed on bucket dredging operations in response to concerns for potential impacts of sediment resuspension on various biological resources. The available...
Aquaculture in Dredged Material Containment Areas
The beneficial use of active dredged material containment areas through aquaculture appears to offer, under certain circumstances, benefits to the Federal government, municipal and industrial...
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