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OCT 2008, Chicago, USA:  Marathon Oil Corporation (Marathon) retained EIC to perform recovery potential tests to evaluate the feasibility of recovering non-aqueous phase liquid (NAPL) at a former terminal and warehousing facility in the Chicago metro area.  Although Marathon had implemented various remedial measures, including pumping systems and excavation of NAPL-saturated soil, NAPL continues to persist at this site. EIC will utilize its unique non-aqueous extraction technique (NETTM) - based system to perform recovery recharge tests to determine the NAPL recovery potential from selected wells.  In particular, the tests will determine if NAPL recovery is sustainable or limited.  If found sustainable, the NETTM systems can be utilized to match recovery to recharge thus optimizing NAPL recovery until an end point is reached.  The remedial progress and end points can be verified utilizing EIC's patented Groundwater Factoring Technique (GFT).  If NAPL recovery is limited, alternative remedial measures will be considered.  This approach will help Marathon  eliminate perpetual NAPL liabilities in a cost-effective manner and within a reasonable time frame.  Marathon authorized this task for EIC under a subcontract agreement with Arcadis.


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