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I <br /> 02 May 2002 <br />' AGE-NC Project No 98-0452 <br /> SPage 4 of 4 <br />' monitoring event Local ground water appears to be Influenced by seasonal hydrogeologic <br /> changes <br />' • TPH-d, TPH-g and BTEX constituents were not detected above laboratory reporting limits <br /> in any of the ground water samples collected and analyzed <br /> I • MTBE was detected in monitoring wells MW-1, MW-2 and MW-3 at concentrations of <br /> 1 7 µg/1, 110 µg/1 and 130 µg/1,respectively The concentrations detected in samples MW-2 <br />' and MW-3 exceeed the action level and Maximum Containment Level for MTBE in drinking <br /> water <br /> • TAME was detected in the sample collected from monitoring well MW-3 at a concentration <br /> of 1 3 µg/1 TAME had not been detected in any ground water samples since monitoring <br /> began in September 2000 <br /> I • Target analytes were not detected in the on-site domestic well <br /> 6.0. RECOMMENDATIONS <br /> Based upon data collected from the site, AGE recommends continued ground water monitoring for <br /> MTBE The next quarterly monitoring event should be scheduled for June 2002 <br /> 7.0. LIMITATIONS <br /> I 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 field <br /> measurements and analytical results provided by an independent laboratory Evaluations of the <br /> hydrogeologic conditions at the site for the purpose of this Investigation are made from a limited <br /> number of available data points (i a monitoring wells, ground water samples) and subsurface <br /> conditions may vary away from these data points No other warranty, expressed or Implied, is made <br /> as to the professional recommendations contained in this report <br /> • <br />' Advanced GeoEnvironmental,Inc <br /> I <br />