Real Estate Transaction

Case Study - TCE



Overview

As part of a real estate transaction, our client was committed to treat a chlorinated ethene plume to below the applicable Standards. The ethenes of concern included:

  • TCE (concentrations of ~100 μg/L)
  • cis-1,2-DCE (concentrations of ~150 μg/L)
  • Vinyl chloride (concentrations of ~10 μg/L)

Scope of Work

  • Acquired all relevant permits to complete the remediation program.
  • Designed pilot scale program to determine injection parameters.
  • Designed and optimized an in-situ program to maximize treatment efficiencies.
  • Implemented a program that minimized capital expenditures and infrastructure.
  • Monitored pre- and post-injection treatment parameters.

The Vertex Approach

  • Screen Shot 2015-08-17 at 3.42.55 PMProgram to address plume with dimensions of ~150 m by 50 m
  • Chemical oxidation using permanganate
  • Three injections under low pressure
    • greater than 3,900 kg of KMnO,
  • Injections completed using:
    • Direct placement
    • Pressure injection into vertical wells
    • 54 injection wells and 58 temporary points

Outcome

  • Screen Shot 2015-08-17 at 3.43.06 PMRemediation completed within 6 months
  • Remediation objectives meant:
    • TCE below 50 μg/L
    • cis-1,2-DCE below 70 μg/L
    • Vinyl chloride below 0.5 μg/L
  • Record of Site Condition Obtained

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