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...
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...
Design of Monroe Harbor, MI Confined Disposal Facility
Confined disposal of polluted maintenance dredgings in the Great Lakes was authorized due to the 'closed system' nature of the receiving waters. Each harbor judged...
Dredging Guidelines for the Great Lakes
The International Working Group on the Abatement and Control of Pollution from Dredging Activities was established in November 1972 in compliance with the Great Lakes Water Quality Agreement....
Design of Confined Disposal Areas for Retention of Contaminants
Dredged material which is unsuitable for disposal in open water due to the presence of contaminants is normally placed in confined disposal areas. The quality of effluent discharged from...
Regulation: The Unsolved Dilemma
Over the years, the impact of governmental regulatory agencies has severely restricted industrial and commercial development in southern New Jersey. Recent Federal reviews of these regulations...
Sediment Recycling for Beach Nourishment, Sandy Hook, N.J.
Maintenance dredging of Ambrose and Sandy Hook Navigation Channels provided acceptable sand for nourishment of the critical zone at Sandy Hook, Gateway National Recreation Area, to protect...
Dredging in a Stratified Estuary
Grays Harbor is a moderately stratified estuary on the Washington coast. During the summer of 1983, while hopper dredges worked the upper reaches of the estuary, extensive water quality...
Sediment Resuspension Due to Dredging and Storms: An Analogous Pair
The physics of resuspension is represented by the response of the sediment to an applied stress, either dredging operations or storm winds. In either case, once the sediments are mixed...
Settling of Dredged Material Slurries
Most environmental engineers, accustomed to dealing with clarification of suspensions containing approximately 150 mg/1, find it difficult to comprehend dredged material slurries, in which...
A Comparison of Seven Lake Dredging Projects
Over the past decade, dredging has been increasingly recognized as one method for restoring some of the country's numerous eutrophic lakes. While certainly not appropriate...
The Experience of the St. Paul District Corps of Engineers, with State Coordination of Dredging Activities
The St. Paul District annually dredges about 1 million cubic yards of predominately clean sandy river sediments. Most of this volume comes from our maintenance of 284 miles of the 9-foot...
Dredge Cutterhead Flow Processes
Feasibility studies of new dredge intake and cutterhead shielding techniques were conducted to improve hydraulic cutterhead dredge performance. Simple modification of the suction mouth...
Practicality of Advance Maintenance: Savannah Harbor
Advance maintenance of navigation channels can involve deepening, widening, side slope dredging, or a combination of these. Because advance maintenance in Savannah Harbor has only involved...
Current Issues in Rock Dredging
An attractive alternative to the use of explosives for deepening shipping channels is the improvement of the rock cutter suction dredger. But, assessing the capability and design parameters...
Fundamentals of Capping Contaminated Dredged Material
Contaminated dredged material disposed in subaqueous sites may be chemically and biologically isolated by covering or capping with a layer of clean material. The capping concept is simple;...
Confined Disposal Area for Port Hueneme Harbor, Calif.
The U. S. Army Corps of Engineers, Los Angeles District, is responsible for maintenance of harbors along the Coast of California from Morro Bay Harbor to San Diego Harbor. As part of this...
Alternative Upland Disposal Techniques for Dredged Material in Urban Areas
The project involves the dredging and disposal of 750,000 cubic yards of soft organic silts from a 32 mile long manmade Canal that tranverses through Central New Jersey and is known as...
Dispersal of Wastewater in the Ocean--A Cascade of Processes at Increasing Scales
An engineering system for marine waste disposal is described. Design decisions are based on broad categories of input information: the complete description of the waste to be discharged;...
Return to search