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1 <br /> 1 01 November 2002 <br /> AGE-NC Project No 95-0103 <br /> 1 Page 6 of 6 <br /> Based on the results of the 09 September 2002 quarterly monitoring event, AGE concludes the <br /> ifollowing <br /> • The average ground water level was approximately 15 3 feet below the top of the casing, a <br /> 1 ground water decrease of approximately 2 5 feet since the monitoring event in May The map <br /> of ground water contours Indicates a general ground water flow toward the south to <br /> southeast <br /> 1 • The ground water table in monitoring wells MW-2 through MW-4 was approximately one <br /> feet above the top of the screened Interval, these wells may not yield samples fully <br /> 1 representative of shallow ground water conditions <br /> • Benzene was detected in sample MW-4 at 58 µg11, which is above the DHS' Maximum <br /> 1 Contaminant Level of 10 µg11 In drinking water <br /> 1 5.0. RECOMMENDATIONS <br /> Based upon the results of the third quarter 2002 AGE recommends <br /> lie • Continued quarterly ground water monitoring at the site The next monitoring event should <br /> be scheduled for December 2002 <br /> 1 • Continued operation and maintenance of the ground water extraction and treatment system <br /> 1 6.0. LIMITATIONS <br /> 1 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 /> 1 at the site for the purpose of this investigation have been made from review of reports prepared by <br /> previous consultants and AGE, and a limited number of available data points (e g , ground water <br /> samples from monitoring and recovery wells) Subsurface conditions may vary away from these data <br /> ipoints No other warranty, expressed or Implied, is made as to the professional recommendations, <br /> interpretations, opinions contained in this report <br /> 1 <br /> 1 <br /> Advanced GeoEnviron mental,Inc <br /> i <br /> 1 <br />