Overview
At a rural residence, petroleum hydrocarbons leaked from a heating oil storage tank into the underlying groundwater, rock and soil. The release created potential health and ecological risks for the residents and local environment. Soil concentrations included:
- PHC (maximum concentration of > 1,110 μg/g)
Groundwater concentrations ranged up to:
- PHC (maximum concentration of > 64,200 μg/L)
Scope of Work
- Acquired all relevant permits to complete the remediation program
- Implemented a pilot-scale test to determine areas of influence and injection rates
- Designed and optimized an in- program to maximize treatment efficiencies
- Implemented a program that minimized capital expenditures and infrastructure
The Vertex Approach
- Chemical oxidation and enhanced aerobic biodegradation
- Multiple applications
- Under floor slab and footing
- Into overburden and fractured rock
- Injection of chemical oxidant
- > 845 kg of RegenOx
- Injections completed using:
- Horizontal & vertical wells
Outcome
- Over 3,500 L of oxidant solution delivered to impacted areas – on going
- Residents able to remain in house
- Structure not affected
- RegenOx solution effectively distributed throughout impacted areas
- Significant reductions for:
- BTEX
- F1 & F2
- F3 & F4