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18 February 2003 <br /> AGE-NC Project No 98-0448 <br /> Page 8 of 8 <br /> 6.0. RECOMMENDATIONS <br /> Based upon the results of this investigation, AGE recommends <br /> * Continued quarterly ground water monitoring and sampling of wells MW-1, MW-2, <br /> MW-4A,MW-4B,MW-6 and MW-8,ground water sampling results will be used to monitor <br /> progress of the SVE and 1AS remediation system <br /> O Monthly depth to ground water measurements collected from all monitoring wells (MW--1 <br /> through MW-8) to monitor for ground water mounding resulting from IAS <br /> e Continued operation of the on-sate SVE and IAS remediation system, remediation progress <br /> will be re-evaluated on a Quarterly basis <br /> * Alternating air spargmg at regular Intervals between MW-4B(screened 45 to 40 feet bsg)arid <br /> IAS wells AW-1 through AW-4 (screened 25 to 30 feet bsg) <br /> 7.0 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 Evaluations of the hydrogeologic <br /> conditions at the site for the purpose of this investigation were made from a limited numbei of <br />' available data points (i a soil-gas samples and monitoring well ground water samples), and <br /> subsurface conditions may vary away from these data points No other warranty, expressed or <br /> implied, is made as to the professional interpretations, opiraons and recommendations contained in <br /> this report <br /> I <br /> IAdvanced GeoEnvironmental,Inc <br /> I <br />