Dry Cleaning Facility


Overview

Groundwater impacted with chlorinated ethenes were flowing from this dry cleaning facility at concentrations greater than the applicable Standards. The concentrations of the compounds of concern were:

  • PCE (maximum concentration of 223 μg/L), and
  • TCE (maximum concentration of 0.9 μg/L)

Vertex was requested to implement a cost-effective program to mitigate the impacts flowing from the Site that was passive and required little to no maintenance and operation.


Scope of Work

  • Screen Shot 2015-08-17 at 3.21.48 PMAcquired all relevant permits to complete the remediation program
  • Designed and optimized an in- program to maximize treatment efficiencies
  • Conducted a pilot-scale program to determine injection pressures needed to create an adequate area of influence in the clayey overburden situ
  • Implemented a full-scale program using direct push techniques and high pressure injection

The Vertex Approach

  • In-Situ Chemical Oxidation
  • Multiply applications
    • Source reduction
    • Plume elimination
  • Injection of chemical oxidant
    • 440 kg of permanganate
  • Injections completed using:
    • Vertical wells
    • High pressure (> 150 psi)

Outcome

  • Screen Shot 2015-08-17 at 3.22.01 PMOver 30,000 Lof oxidant solution delivered
  • Operations not interrupted
  • Remediation objectives meant:
    • PCE (>75% decrease after 2 injections)
    • TCE (>80% decrease after 2 injections)
    • cis-1,2-DCE (76% decrease after 2 injections)

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