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I30 October 2002 <br /> AGE-NC Project No 01-0827 <br /> Page 5 of 5 <br /> • The 1AS system appears to be ineffective to mitigate the dissolved hydrocarbons in saturated <br /> zone The feasibility of augmenting the TAS system with ozone should be examined <br /> I5.0. RECOMMENDATIONS <br /> Based on the findings of the remediation activities recounted in this report, AGE recommends <br /> • Conduct a quarterly ground water monitoring event in December 2002 <br /> • Continue operation of the soil vapor extraction system The air-sparing network should be <br /> augmented with ozone, to optimized in-situ hydrocarbon destruction <br /> I <br /> 6.0, LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily exercised by <br /> environmental consultants practicing in this or similar localities The findings were based upon <br /> Ianalytical results provided by an independent laboratory Evaluation of the hydrogeologic conditions <br /> at the site for the purpose of this investigation was made from a limited number of available data <br /> points(soil-vapor and ground water samples)and subsurface conditions may vary away from these <br /> data points No other warranty, expressed or implied, is made as to the professional opinions, <br /> findings and recommendations contained in this report <br /> I <br /> I <br /> • <br />■ Advanced GcoEnviron mental,Inc <br /> I <br />