Overview
Near a residential area in Quebec, an accidental release of petroleum hydrocarbons from a spill into the underlying groundwater and soil posed a risk to nearby water supply wells. Groundwater concentrations for selected PHCs included:
- Benzene (maximum concentration of 146 μg/L)
- Toluene (maximum concentration of 436 μg/L)
- Xylene (maximum concentration of > 4,000 μg/L)
Scope of Work
Vertex staff:
- 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
- Chemical oxidation
- Unconfined sand formation
- Multiple applications
- grassland, near residents
- Injection of chemical oxidant
- Activated Persulphate
- Hydrogen peroxide activator
- Injections completed using:
- Vertical wells
Outcome
- Over 30,000 L of oxidant solution delivered to impacted areas
- Minimal disruption to nearby residents
- Nearby structures not affected
- Persulphate solution effectively distributed throughout impacts areas
- Remediation objectives met for:
- BTEX
- F1 & F2
- F3 & F4
- Record of Site Condition Obtained