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NJ KLE—ELVIR <br /> water gradient Is consistent with gradients seen during monitoring activities while the VES <br />_ - - was in operation. t <br /> ANALYTICALRESULTS <br /> In the Final Site Remediation Report Kleinfelder presented soil and SlOnad water <br /> analytical results that Indicated significant reduction in petroleum hydrocarbon constituents <br /> as a insult of operation of the VES. Toluene has-been delated or]--is around the _ <br /> detection limit and low levels of TP31 were detected. Kleinrelder recommended that the <br /> VES be dismantled and thentorkraingWells be property abandoned. - <br /> a` The March 1990 round of pound water sampling showed that TPH concentrations eere no - <br /> longer detected in the samples submitted to the laboratory. The IT concentrations <br /> previously detected in the wells were not confined, f <br /> 7f At this lime it appears that ground walI,r is no longer being affected by pelreleum <br /> $ hydrocarbons discharged from the formerlgasoline tank. Kleinfelder again recommends - <br /> B$ that Guild Winery apply to Sun Joaquin,County to dismantle the-VES and_properly <br /> abandon the monitoring wells(in compliance with T)WR eulletin74-81). t' <br /> TION. I) . <br /> w Klainfc]der has conducted this ground water assearacra in-aocordance with the-gegerally �I <br /> pp accepted standards of care practiced by other--inembers of our profession in Northern <br /> Califoraia at the time of the investigation. As requested by the client eight monitoring I; <br /> wells were sampled. It should be recognized that definition and evaluation of geologic _ <br /> eondi0e.is a difficult an tne[acl sgjence.Judgements leading to conclusions are generally <br /> made with incomplete knowledge or ttte subsurfue conditions present. More exwnsive j y/ <br /> t studies, including additional subsurface investigations, may reduce the inherent <br /> 7 uncenatntiesassacintsrdwtthinterpretationofsubsuiraceconditions.Iftheclicntwisbestra .r u <br /> reduce the uncertainty beyond the Ievel associated with this study Kteinfelder should he <br /> nritified for additional consultation.Nowarcaaty,expressed or impEed,is made. <br /> F5-90-129 <br />