Author: J. M. O'Connor
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
Book Description
The objective of the project was to assess the potential for placing a cap at the experimental Mud Dump site and to determine reductions in environmental impacts related to capping. Contaminated sediment from dredging projects in the Hudson Estuary, Newark Bay, and contiguous waters were capped first with fine sediments from the Bronx River and Westchester Creek, then with sand from the Ambrose Channel. The capping resulted in a layer of sand about 1m thick lying atop the contaminated sediment. Physical, chemical and biological studies were carried out to determine if the capping effort yielded an intact cap showing resistance to erosion, and if the effort reduced loss of organic and inorganic toxicants from the contaminated material to the water column. It was determined that a cap was successfully placed at the experimental dump site. The cap was still intact and in place after 16 months. Cap erosion was minor; predictions of cap life were in excess of 20 years under normal meteorological conditions. Major storm events, however, are capable of eroding the cap and exposing the contaminated material. During the 16 months of study, the contaminated material decreased in volume by about 4%. Part of the decrease was due to compaction and part was due to loss of solids during dumping and deposition.
Dredging Operations Technical Support Program. Evaluation of the 1980 Capping Operations at the Experimental Mud Dump Site, New York Bight Apex
Author: J. M. O'Connor
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
Book Description
The objective of the project was to assess the potential for placing a cap at the experimental Mud Dump site and to determine reductions in environmental impacts related to capping. Contaminated sediment from dredging projects in the Hudson Estuary, Newark Bay, and contiguous waters were capped first with fine sediments from the Bronx River and Westchester Creek, then with sand from the Ambrose Channel. The capping resulted in a layer of sand about 1m thick lying atop the contaminated sediment. Physical, chemical and biological studies were carried out to determine if the capping effort yielded an intact cap showing resistance to erosion, and if the effort reduced loss of organic and inorganic toxicants from the contaminated material to the water column. It was determined that a cap was successfully placed at the experimental dump site. The cap was still intact and in place after 16 months. Cap erosion was minor; predictions of cap life were in excess of 20 years under normal meteorological conditions. Major storm events, however, are capable of eroding the cap and exposing the contaminated material. During the 16 months of study, the contaminated material decreased in volume by about 4%. Part of the decrease was due to compaction and part was due to loss of solids during dumping and deposition.
Publisher:
ISBN:
Category :
Languages : en
Pages : 78
Book Description
The objective of the project was to assess the potential for placing a cap at the experimental Mud Dump site and to determine reductions in environmental impacts related to capping. Contaminated sediment from dredging projects in the Hudson Estuary, Newark Bay, and contiguous waters were capped first with fine sediments from the Bronx River and Westchester Creek, then with sand from the Ambrose Channel. The capping resulted in a layer of sand about 1m thick lying atop the contaminated sediment. Physical, chemical and biological studies were carried out to determine if the capping effort yielded an intact cap showing resistance to erosion, and if the effort reduced loss of organic and inorganic toxicants from the contaminated material to the water column. It was determined that a cap was successfully placed at the experimental dump site. The cap was still intact and in place after 16 months. Cap erosion was minor; predictions of cap life were in excess of 20 years under normal meteorological conditions. Major storm events, however, are capable of eroding the cap and exposing the contaminated material. During the 16 months of study, the contaminated material decreased in volume by about 4%. Part of the decrease was due to compaction and part was due to loss of solids during dumping and deposition.
Evaluation of the 1980 Capping Operations at the Experimental Mud Dump Site, New York Bight Apex
Author: Joseph M. O'Connor
Publisher:
ISBN:
Category : Dredging spoil
Languages : en
Pages : 86
Book Description
Publisher:
ISBN:
Category : Dredging spoil
Languages : en
Pages : 86
Book Description
Evaluation of Capping Operations at the Experimental Mud Dump Site, N.Y. Bight Apex, 1980
Author: Joseph M. O'Connor
Publisher:
ISBN:
Category : Dredging spoil
Languages : en
Pages : 70
Book Description
Conflicting, multiple uses of the New York Bight impose various stresses on its physical and biological resources. Ocean disposal of waste poses a management problem which is regulated by no fewer than four pieces of Federal legislation and several state and federal regulatory agencies. Dredged material disposal in the New York Bight is regulated by the U.S. Army Corps of Engineers. Current regulations dictate that contaminated waste dredged material be given special treatment. The special treatment discussed in this synthesis report is the capping of contaminated waste dredged material with clean material to minimize transport of toxicants from the sediment to marine biota.
Publisher:
ISBN:
Category : Dredging spoil
Languages : en
Pages : 70
Book Description
Conflicting, multiple uses of the New York Bight impose various stresses on its physical and biological resources. Ocean disposal of waste poses a management problem which is regulated by no fewer than four pieces of Federal legislation and several state and federal regulatory agencies. Dredged material disposal in the New York Bight is regulated by the U.S. Army Corps of Engineers. Current regulations dictate that contaminated waste dredged material be given special treatment. The special treatment discussed in this synthesis report is the capping of contaminated waste dredged material with clean material to minimize transport of toxicants from the sediment to marine biota.
Newtown Creek Maintenance Dredging, Navigation Project
Dredging and Dredged Material Disposal
Author: Raymond Lowree Montgomery
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 640
Book Description
This collection contains 120 papers presented at Dredging '84, held in Clearwater Beach, Florida, November 14-16, 1984.
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 640
Book Description
This collection contains 120 papers presented at Dredging '84, held in Clearwater Beach, Florida, November 14-16, 1984.
Boston Harbor Navigation Improvement and Berth Dredging Project
Puget Sound Confined Disposal Site Study: Without special title
Author:
Publisher:
ISBN:
Category : Contaminated sediments
Languages : en
Pages : 494
Book Description
Publisher:
ISBN:
Category : Contaminated sediments
Languages : en
Pages : 494
Book Description
Guidance for Subaqueous Dredged Material Capping
Author: Michael R. Palermo
Publisher:
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.
Publisher:
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.
Proceedings
Managing Dredged Material
Author: Joseph O'Connor
Publisher:
ISBN:
Category : Dredging
Languages : en
Pages : 140
Book Description
Publisher:
ISBN:
Category : Dredging
Languages : en
Pages : 140
Book Description