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
- 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
Over 5,000 Lof oxidant solution delivered- Source zone address
- Potential off-site migration impacts addressed
- Operations not interrupted
- Project objectives meant