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08 February 2005 <br /> AGE-NC Project No 00-0764 <br /> i <br /> Page 4 of 4 <br /> • TPH-g was detected in the sample from ground water monitoring well MW-3 at a <br /> concentration of 250 µg11 The concentration of TPH-g in ground water is consistent with <br /> previous sampling events This indicates the Impacted ground water plume is stable <br /> i ' • D1PE and 1,2-DCA were detected in the sample from ground water monitoring well MW- <br /> 4 at concentrations of 3 9 pg/l and 3 S µg/l, respectively These concentrations are <br /> consistent with previous sampling events, Indicating that the impacted ground water <br /> plume Is stable <br /> • At the present time, the vertical extent of the dissolved hydrocarbons has been defined by <br /> ' boring B 1 and well MW-5 The lateral extent of the dissolved hydrocarbons has been <br /> defined by the shallow wells <br /> 5.0. RECOMMENDATIONS <br /> iBased on the results of this Investigation, AGE recommends <br /> �. • Continued quarterly ground water monitoring, the next monitoring event was performed <br /> in September 2004 <br /> • A review of one year's ground water data should be conducted to determine the potential <br /> ' for site closure <br /> 6.0. LIMITATIONS <br /> Our professional services were performed using that degree of care and skill ordinarily exercised <br /> by environmental consultants practicing in this or similar localities The findings were based <br /> mainly upon 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 ground water samples), and subsurface conditions may vary <br /> away from these data points No other warranty, expressed or Implied, is made as to the <br /> ' professional Interpretations, opinions, and recommendations contained In this report <br /> i <br /> I ' Advanced GeoEnvironmental,Inc <br /> I <br />