Craney Island Sand Reclamation

  • Dredging, Environmental Mitigation
  • Portsmouth
  • Virginia
The Craney Island Dredged Material Management Area (CIDMMA) project in Virginia involved sand reclamation dredging to maximize cell capacity and extend the facility's lifespan by raising perimeter dikes, utilizing a hydraulic cutterhead pipeline dredge to transport material for natural sorting closer to the dikes.

Craney Island Sand Reclamation Dredging

The Craney Island Dredged Material Management Area (CIDMMA) is a 2,500-acre confined dredged material disposal site at the north end of Portsmouth near Norfolk, Virginia. This project involved sand reclamation dredging within the CIDMMA, which was necessary to maximize cell capacity and to extend the design life of the facility by reclaiming material to raise the perimeter dikes. Current methods of extracting material within the CIDMMA have proven successful for nearly six decades; however, hazardous conditions within the CIDMMA often limit the distance from the perimeter dikes with which reclamation efforts can take place. Using a hydraulic cutterhead pipeline dredge, material located within the center of the north cell was transported to a placement site closer to the perimeter dikes, where natural sorting of the material separates the sands from the fines.

2022
Virginia
Dredging, Environmental Mitigation
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