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19 April 2004 <br /> AGE-NC Project No. 95-0185 <br /> ' Page 4 of 4 <br /> i <br /> • TPH-g concentrations increased in wells MW-1 and MW-4 from the June 2003,monitoring <br /> ' event.TPH-d concentrations in wells MW-1 and MW-4 decreased significantly from the June <br /> 2003 monitoring event,but TPH-d was detected for the first time in well MW-5. Petroleum <br /> hydrocarbons have not been detected in wells MW-2 and MW-3 since the third quarter 2002. <br /> ' 5.0. RECOMMENDATIONS <br /> Based upon the results of the first quarter 2004 monitoring event, AGE recommends: <br /> ' Continued quarterly ground water monitoring at the site for dissolved 'TPH-d; the next <br /> monitoring event is scheduled for April. <br /> 1 • Operation of passive free-product recovery system at wells MW-1 and MW-4 may reduce any <br /> free-product formed and accumulated during non-monitoring periods. <br /> • 6.0. LIMITATIONS <br /> ' Ourp rofessional 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 on analytical <br /> ' results provided by an independent laboratory.Evaluations of the hydrogeologic conditions at the site <br /> for the purpose of this investigation were made from a limited number of available data points (i.e., <br /> ground water samples) and subsurface conditions may vary away from these data points. No other <br /> ' warranty, 'expressed or implied, is made as to the professional interpretations, opinions and <br /> recommendations contained in this-report. <br /> 1 <br /> 1 <br /> Advanced GeoEnviron mental,Inc. <br />