Groundwater Remediation – Bulk Fuel Terminal
Remediate a bulk fuel terminal that has operated since World War II. Groundwater was discovered to be impacted over an area of 5+ acres, including numerous off-site residential properties. The petroleum contamination existed as free-phase floating gasoline (over 2 acres) and as dissolved compounds in saturated soils and fractured bedrock aquifers.
EnviroSouth installed a fixed high-vacuum extraction system in the area of free-phase gasoline. This resulted in the rapid removal of all floating gasoline in less than 18 months. Dissolved compounds in the soil and bedrock aquifers were treated with a multi-level air sparging system which allowed in-site air stripping and anaerobic bioremediation to eliminate 99% of the dissolved concentrations with no disruption of terminal operations.
Cost savings were achieved by using computer-controlled timers that automatically alternated air-flow among 45 vacuum remediation wells and 42 air sparging wells. Constant monitoring of groundwater data allowed EnviroSouth’s scientists to adjust air flow rates and add additional remediation wells in slow-responding areas in an aggressive pursuit of project closure.
EnviroSouth’s cost effective and aggressive remediation approach has also resulted in “No Further Action” status on bulk fuel terminals in Charlotte, North Carolina and Columbus, Georgia.
Services We Provided:
- Laser-induced Fluorescence Assessment
- High-vacuum Recovery
- Air Sparging
- Air Stripping Water Treatment
- Infiltration Gallery for Economical Effluent Disposal
- Oil Water Separation
- Risk-based Assessment
- Fractured Bedrock Remediation