Operating Dry Cleaning Facility in Ottawa

Case Study - PCE



Overview

At an operating dry cleaning facility in Ottawa chlorinated ethenes including PCE were discovered underneath and downgradient of the facility. Groundwater and soil impacts included:

  • PCE (maximum concentration of 250 μg/L & 1.0 μg/g)
  • TCE (maximum concentration of 1.2 μg/L & <0.5 μg/g)
  • cis 1,2 DCE (maximum concentration of 2.4 μg/L & <0.5 μg/g)

Scope of Work

  • Acquired all relevant permits to complete the remediation program
  • Designed and optimized an in-situ program to maximize treatment efficiencies
  • Implemented a program that minimized capital expenditures and infrastructure

The Vertex Approach

Screen Shot 2015-08-17 at 1.31.19 PM

  • In-Situ Chemical Oxidation
  • Single application
    • Mitigate off-site migration
    • Source reduction
  • Injection of chemical oxidant
    • 150 kg of permanganate
  • Injections completed using:
    • Vertical wells
    • Low to moderate pressure

Outcome

  • Screen Shot 2015-08-17 at 1.31.26 PMOver 5,000 Lof oxidant solution delivered
  • Source zone address
  • Potential off-site migration impacts addressed
  • Operations not interrupted
  • Project objectives meant

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