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17 July 1997 ' <br /> AGE-NC Project No 95-6142 <br />' <br /> 1 Page 4 of 41� - <br /> 1 <br /> i i I <br /> ' wells VW-2, VW-3 `and VW-,4 have'remained similar to the concentrations in samples <br />' collected during the,previous quarter i 1, <br /> 1 a I n V <br /> "w 5.0.' 'RECOMMENDATIONS <br /> r <br /> r Based upon past andpresent,site conditions, AGE recommends the following " <br /> I <br /> II I d 1 I <br /> • The next quarterly ground water monitoring should be scheduled for September,1997 <br />' • Additional soil vapor,,extraction and/or nn-situ air sparging 'wells should be installed in <br /> preparation for active remediation at the site AGE recommends initiating active in-situ ' <br /> remediation at the site once reimbursement-funding has been'established from the State Water., <br /> Resources Control Board <br /> r \ C <br />'� • '� The concentrations of total xylene detected in the purged water should not exceed acceptable 1, <br /> limits for discharge into the City of Stockton treatment plant Therefore, we recommend' <br />' obtaining permission from the City of Stockton to dispose of the purge water into the sanitary , <br /> sewer <br /> ,6.0. LIMITATIONS 5 <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 u'pon <br /> analytical results provided by an'mdependent laboratory Evaluations of the-geologic/hydrogeolognc <br />' coriditions at the site for the purpose of this investigation were made from a limited number ref data <br /> points'(i a monitonng'wells, ground water samples) and subsurface conditions may,vary away fr01A <br /> " these data <br /> ,points! No other warranty, expressed ,or implied,' is made as.to the' professional k <br /> I <br /> recommendations contained in tht's Lreport <br /> S <br /> r � <br /> t 1 I <br /> �y <br /> 1 <br /> N i <br />