Featured Project

Design and Implementation of PRB

Kingston, ON
Key Services
  • Excavation and Disposal
  • In-situ Technologies
  • 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 Challenges
Key Solutions
  • 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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