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• 14 June 2004 <br /> AGE-NC Project No 98-0540 <br /> Page 5 of 5 <br /> • Ground water in the area of wells MW-1 (former UST) and MW-3 (immediately down- <br /> gradient of former UST) is impacted by detectable concentrations of dissolved petroleum <br /> hydrocarbons, the vertical and lateral extent of impacted ground water has not been fully <br /> delineated <br /> • TPH-g, ethylbenzene and xylenes were detected above laboratory reporting limits from two <br /> off-site domestic wells when sampled on 20 November 2003,however,target analytes were <br /> not detected in three subsequent samples of these wells Due to the lack of detection in <br /> subsequent sampling events,AGE believes that the contamination in the initial samples may <br /> have been due to sampling or analytical errors <br /> 5.0. RECOMMENDATIONS <br /> Based upon data collected from the site, AGE recommends <br /> • Continued ground water monitoring The next quarterly monitoring event is tentatively <br /> scheduled for June 2004 <br /> o Preparation of a work plan to assess the vertical and lateral extent of 1,2-DCA-impacted <br /> ground water <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 /> Advanced GeoEnvironmental,Inc <br />