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' 04 December 2002 <br /> AGE-NC Project No 00-0764 <br /> Page 4 of 4 <br /> • The benzene concentration in well MW-3 and the 1,1-DCA concentration in well MW-4 are <br /> above the DHS's Maximum Contaminant Level of 10 µg/1 and 5 0 go, respectively, in <br /> drinking water Figure 4 depicts the dissolved benzene concentrations <br /> ' At the present time,neither the vertical extent nor the southern and eastern lateral extent of <br /> the dissolved hydrocarbons have been defined <br /> 5.0. RECOMMENDATIONS <br /> Based on the results of this investigation, AGE recommends <br /> • Continued quarterly ground water monitoring, the next monitoring event is scheduled for <br /> I ' December 2002 <br /> • Installation of additional ground water monitoring wells for vertical and lateral delineation <br /> of the dissolved hydrocarbons at the site <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 for the purpose of this investigation are made from a limited number of <br /> available data points (i a ground water samples), and subsurface conditions may vary away from <br /> these data points No other warranty, expressed or implied, is made as to the professional <br /> ' interpretations, opinions and recommendations contained in this report <br /> i <br /> Advanced GeoEnvironmental,Inc <br /> ' , I <br />