ARS Completes Deep FeroxSM Application
 | ARS crews achieve 82-90%
reduction in TCE within 3 months |
ARS recently completed a deep FeroxSM applic-ation at an active gover-nment facility located in Georgia to treat TCE impacted ground water present within a clay limestone aquifer. During the pilot test, ARS crews injected 5,225 pounds of H-200 reactive ZVI powder targeting a treatment interval between 60 and 80 feet bgs. Pneumatic Fracturing was first applied to create a dense network of fractures within the low permeability clay material and then nitrogen was used to deliver the atomized iron powder slurry into the subsurface. Very loose sandy clay and loose limestone formations provided a challenge during drilling, fracturing and injecting within the subsurface environment. An injection radius of influence in excess of 30 ft was measured during the project.
Within the first three months and based upon comparison of ground water TCE concentration levels before and after injections, reductions of 82% to 90% have already been observed at the site. With groundwater Geochemical changes being observed at the site as a result of the injected iron, further reductions are expected in the upcoming months.
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