Equipment and Placement Techniques for Subaqueous Capping

Abstract

Dredged material and in situ sediments may contain contaminants at sufficient concentrations to degrade the benthic environment. In cases where unacceptable toxicity or bioaccumulation is predicted to occur, subaqueous capping with a layer of clean material is often an acceptable management or remediation alternative. This technical note (TN) describes equipment and placement techniques for subaqueous capping projects. The equipment and techniques are applicable to placement of contaminated material to be capped and clean material to be used for capping and include conventional discharge from barges, hopper dredges, and pipelines; submerged discharge from diffusers and tremies; and surface spreading techniques for cap placement. Both granular capping materials such as sediments and soils and geosynthetic fabrics and armoring materials are considered.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2005
Accession Number
ADA439262

Entities

People

  • James E. Clausner
  • M. R. Palermo
  • Robert M. Engler
  • Susan E. Bailey

Organizations

  • Engineer Research and Development Center

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Civil Engineering
  • Composite Materials
  • Construction
  • Construction Equipment
  • Engineering
  • Engineers
  • Environment
  • Environmental Pollutants
  • Environmental Protection
  • Fine Grained Materials
  • Geography
  • Materials
  • Materials Laboratories
  • New York
  • Open Water
  • Puget Sound
  • Topography

Fields of Study

  • Environmental science

Readers

  • Coastal and Marine Engineering/Sediment Transport/Hydraulic Engineering
  • Groundwater Contamination Remediation.