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' 23 July 1998 <br /> -AGE-NC Project No 95-0144 <br /> Page 3 of 3 <br /> ' 4 0. SUMMARY/CONCLUSIONS <br /> Based upon data collected from the site, AGE concludes <br /> ' • Ground water elevation increased an average of 1 5 feet at the site during the previous <br /> quarter Ground water was between five and eight feet above the screened interval in five <br /> ' wells and approxunately three feet above the screened interval in three wells during the May r <br /> 1998 monitoring event - <br /> ' • Low concentrations of petroleum hydrocarbons were detected in the four wells sampled <br /> Concentrations of detected analytes remained consistent with results from previous samplings <br /> events <br /> • Additional monitoring wells were installed near the former location of UST No 8 in June—) <br /> 1998 Details of the well installations will be included in the August 1998 Quarterly Report <br /> . 5.0. RECOMMENDATIONS <br /> 1 ` <br /> Based upon data obtained during the May 1998 and previous sampling events,AGE recommends <br /> ' the following <br /> • The next quarterly monitoring event should be scheduled for August 1998, concurrent with <br /> ' monitoring at the Van Buren site In accordance with the revised monitoring schedule, <br /> monitoring wells MW-1, MW-2, MW-4,MW-13 and the new monitoring wells installed in <br /> June 1998 will be sampled at that time The depth to ground water will be measured in all <br /> monitoring wells for gradient and flow direction determination <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 mainly <br /> upon analytical results provided by an independent laboratory Evaluations of the hydrogeologic <br /> ' conditions at the site have been made from a limited number of available data points (i a ground <br /> water monitoring wells), and subsurface conditions may vary through time and with distance from <br /> these data points No other warranty, expressed or implied, is made as to the professional <br /> ' recommendations contained in this report <br /> tAdvanced GcoEaviron mental,Inc <br />