BIOSTIMULATION REMEDIATION OF GASOLINE IN WETLANDS WITH HC-2000

A gasoline tanker rolled over in a swamp in Southern Georgia releasing an estimated 2,000 gallons. The plume migrated over one-acre on a tree farmers property.

Excavation was not an option due to unstable soils, an elevated groundwater table, and the tree farmer did not want access roads cut through his forest. The transportation company contracted with Remtech to employ its proprietary native bioremediation accelerator HC-2000.

Surface and subsurface enzyme applications were made through three biofence reactors consisting of three sets of 10 enzyme injection points and a watering system. Biofences were located progressively downgradient from the spill site. HC-2000 was injected under pressure followed by a water chase. This project was completed in a sixteen (16) week period.

Average site soil Gasoline Recoverable Organics were reduced by 98.7% and average groundwater benzene concentrations by over 84%. Downgradient monitoring wells demonstrated that off-site migration did not occur.

Remtech received approval from the Georgia Department of Natural Resources for completion of this cleanup.

Cost/Benefit Analysis

The cost of this project was $140,000. Project estimates to excavate and dispose of soils (not including site access roads, site dewatering, stream diversion, and tree replace-ment costs) was $240,000.

First HC-2000 Bio-Fence