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ESQUIMALT GRAVING DOCK REMEDIATION

Location:

Esquimalt, B.C. 

 

Client:

Quantum Murray LP

 

Contract Value:

$12M

 

Type of contract:

 

Start Date:

September 2016

 

Completion Date:

October 2016

 

VanPile’s scope of work included:

  • Demolition of approximately 4,740 tonnes of creosote timber dock and dredging 39,800 cubic meters of contaminated sediments followed by the placement of approximately 39,300 cubic meters engineered capping material.
  • Approximately 9,750 cubic meters of dredged material was removed from underneath a concrete dock with the use of a Gradall situated on a Flexifloat barge and the remaining dredged material was removed with a marine derrick and clamshell bucket.
  • The under-pier capping material would be placed with a Gradall floating conveyor and the open-water areas would be placed with a marine derrick.
  • A key feature of the project is the use of an engineered silt curtain situated on top of a re-driven sheet pile wall to ensure containment of contaminants within the project area during dredging and cap placement.