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i <br /> I10 February 2005 <br /> AGE-NC Project No 96-0263 <br /> Page 4 of 4 <br /> I from ground water analyses MTBE concentrations have remained relatively stable since <br /> monitoring began <br /> • The dissolved hydrocarbon plume extends northward from the former UST and dispenser <br /> areas, but not beyond the down-gradient monitoring wells (MW-8 and MW-10) The <br /> dissolved phase plume has been defined laterally in all directions Iso-concentration maps <br /> illustrating the approximate extent of TPH-g, benzene and MTBE-impacted ground water <br /> are depicted on Figures 4, 5 and 6 <br /> I5.0. RECOMMENDATIONS <br />' Based on the findings of this investigation AGE recommends continued quarterly monitoring of the <br /> ground water monitoring wells and operation of the ozone sparge system <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 /> analytical 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(I a ground water samples)and subsurface conditions may vary away from these data points <br /> No other warranty,expressed or implied,is made as to the professional interpretations,opinions and <br /> recommendations contained in this report <br /> I <br /> I <br /> IAdvanced GeoEnvironmental,Inc <br /> I <br />