Author: Publisher:
ISBN:
Category : Dredging spoil
Languages : en
Pages : 174
Book Description
Sediment Capping of Subaqueous Dredged Material Disposal Mounds
Author: Dredging Operations Technical Support Program. Methodology for Analysis of Subaqueous Sediment Mounds
Author: Marian E. Poindexter-RollingsPublisher:
ISBN:
Category :
Languages : en
Pages : 122
Book Description
Dredging of contaminated sediments and subsequent disposal and capping in legally designated sites is an internationally accepted disposal alternative when adherence to strict disposal practices is maintained. As more highly contaminated sediments in the heavily industrialized harbors of the world must be dredged to maintain navigation and economic viability, pressure to use subaqueous dredged material disposal sites will increase. Use of these subaqueous sites has necessitated development of procedures to analyze disposal site capacity based upon physical, chemical, and biological considerations. This study developed an analysis method to investigate the behavior of the created subaqueous sediment mounds. Emphasis was placed upon the physical aspects of mound behavior, although the method also includes chemical and biological aspects. The physical aspects of the method were applied to four field sites at which dredged material mounds have been created. The procedure successfully predicted the physical behavior of the constructed dredged material mounds. This method of analysis provides a useful tool for evaluation of subaqueous disposal sites and the dredged material mounds created within these sites; it is equally applicable to analysis of contaminated and uncontaminated dredged material mounds. Keywords: Underwater dredged materials; Waste disposal consolidation; Site capacity; Soft soils. (edc).
Guidance for Subaqueous Dredged Material Capping
Author: Michael R. PalermoPublisher:
ISBN:
Category : Contaminated sediments
Languages : en
Pages : 598
Book Description
When dredged materials proposed for open-water placement are found to require isolation form the benthic environment due to the presence of contaminants, capping may he appropriate for consideration as a management action. This report is intended to provide technical guidance for evaluation of capping projects. From a technical perspective, this guidance is applicable to dredged material capping projects in ocean waters as well as inland and near-coastal waters. Subaqueous dredged material capping is the controlled, accurate placement of contaminated dredged material at an appropriately selected open-water placement site, followed by a covering or cap of suitable isolating material. A number of capping operations under a variety of placement conditions have been accomplished. Conventional placement equipment and techniques are frequently used for a capping project, but these practices must be controlled more precisely than for conventional placement. Level bottom capping (LBC) is defined as the placement of a contaminated material in a mounded configuration and the subsequent covering of the mound with clean sediment. Contained aquatic disposal is similar to LBC but with the additional provision of some form of lateral confinement (e.g., placement in natural bottom depressions, constructed subaqueous pits, or behind subaqueous berms) to minimize spread of the materials on the bottom.
Methodology for Analysis of Subaqueous Sediment Mounds
Author: Marian E. Poindexter-RollingsPublisher:
ISBN:
Category : Dredging spoil
Languages : en
Pages : 124
Book Description
Behavior of Subaqueous Sediment Mounds
Author: Marian Elizabeth PoindexterPublisher:
ISBN:
Category : Dredging
Languages : en
Pages : 396
Book Description
Rhode Island Region Long-term Dredged Material Disposal Site Evaluation Project
Author: Designation of Dredged Material Disposal Sites in Central and Western Long Island Sound, Connecticut and New York
Author: New York Dredged Material Disposal Site Designation for the Designation of the Historic Area Remediation Site (HARS) in the New York Bight Apex (aka the Mud Dump Site(MDS))
Author: Recent Studies Concerning the Capping of Contaminated Dredged Material
Author: R. W. MortonPublisher:
ISBN:
Category :
Languages : en
Pages : 19
Book Description
Disposal of contaminated sediments in the marine environment through capping with cleaner materials is a management option that has been used extensively during recent years, particularly in the New England region. Most of the capping projects have been restricted to quiescent, shallow-water (20 to 30 m) environments; however, as a result of monitoring programs associated with these projects, a body of knowledge concerning the creation of capped disposal mounds has been developed that can be used to predict the consequences of extending such procedures to deeper waters. The application of capping technology to deeper water is extremely important, because disposal site designation programs currently under way throughout the United States are predominantly aimed at water depths of 100 m or greater.
Deep Water Capping
Author: Mary Baker WileyPublisher:
ISBN:
Category : Dredging
Languages : en
Pages : 54
Book Description