Case Studies - GA005 - Feroxsm and Sodium Permanganate Application

Marine Corps Logistics Base in Albany, Georgia

In 2005, ARS completed a full-scale insitu groundwater remediation at the Marine Corps Logistics Base in Albany, Georgia. ARS was contracted to an international consulting company to apply the Feroxsm technology at one site on the base and implement sodium permanganate injection at another area of the base.

The first phase of the project was implemented in the summer of 2005 and involved the application of Feroxsm in conjunction with Pneumatic Fracturing. The ZVI remedial approach was selected to address the carbon tetrachloride contamination in the groundwater at depths greater than 120 ft bgs. in a silty/sandy clay and weathered limestone formation. To reach the depth effectively while maintaining borehole integrity for the injection as well as minimizing cuttings, ARS integrated sonic drilling technique into the injection process. Custom-made subs and adapters were needed to couple ARS’ proprietary injection assembly with the sonic rig’s tooling.  At the completion of this phase of the work, more than 173,000 pounds of ZVI powder were injected through 18 boreholes.

The second phase was implemented during the fall of 2005. Pneumatic Fracturing and sodium permanganate injection were conducted to remediate TCE and its daughter products at other areas on the base with similar geology.  The treatment zone extended down to 160 feet bgs.  Some of the injection took place within a highly active area where military combat vehicles were serviced.  Additionally, ARS set up a large-scale mixing operation onsite to dilute 40% solution to 8% for the injection operation. At the completion of this phase, more than 135,000 gallons of 8% sodium permanganate were injected through 22 injection points.

During each of the two phases, ARS deployed two field injection/drilling crews that worked parallel to expedite the implementation. This was the deepest ZVI injection project to be implemented. It presented technical, logistic and heath-and-safety challenges ARS was able to manage and overcome. The project was completed on-schedule and within budget.

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