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Design and Implementation of PRB

Type of Work

Soil and Groundwater Remediation

Key Services

Excavation and Disposal
In-situ Technologies


Kingston, ON



Project Scope

  • The design and execution of bench scale testing to prove remediation technology viability.
  • Systematic excavation, loading, transportation, and disposal of hazardous (arsenic) contaminated soil excavated within the Permeable Reactive Barrier (PRB).
  • Design and execution of a Zero Valent Iron (ZVI) injection program to remediate groundwater between the PRB wall and shoreline.

Key Highlights

  • The PRB wall was installed as a funnel and gate system featuring two concrete wing walls as the funnel and a central wall segment acting as the gate..
  • The gate portion of the wall was constructed of sand and ZVI mix which was designed and tested by Milestone
  • Cost savings to the Client of over 50% of the original estimated contract value

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Head Office Locations
Ottawa, ON
Langley, BC

Regional Office Locations
Port Hope, ON
Hamilton, ON