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21 October 2002 <br /> AGE-NC Project No 00-0769 <br />' Page 4 of 4 <br />' • Concentrations of contamination have remained relatively stable in monitoring wells MW-1, <br /> MW-2B,MW-3A and MW-3B since groundwater monitoring began in May 1998 However, <br /> contaminant concentrations have steadily decreased in MW-2A during the same period <br />' • The horizontal and vertical extent of contamination related to an unauthorized release from <br /> the former UST has not yet been defined in soil or ground water <br /> 5.0. RECOMMENDATIONS <br />' Based on the results of this and previous investigations AGE recommends continued quarterly <br /> ground water monitoring, the next ground water monitoring event should be scheduled for <br />' November 2002 <br /> Six multilevel wells were Installed and developed at the site in October 2002, as detailed in the <br />' AGE-prepared Additional Subsurface Investigation Work Plan Addendum,dated 19 April 2002 and <br /> approved by the EHD on 31 May 2002,the new wells will be added to the ground water monitoring <br /> schedule <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 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 interpretations, opinions and recommendations contained in this report <br /> 1 , <br />' Advanced GeoEnvironmental,Inc <br /> 1 r <br />