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P <br /> 0 <br /> • Mr Michael Infurna <br /> Page 2 <br /> method 8020, and total petroleum hydrocarbons as gasoline (TPHg) using modified EPA method <br /> 8015 <br /> TPHg, BTEX, and MTBE were not present above laboratory method detection hnuts in well MW3 <br /> which is consistent with data collected during previous monitoring events TPHg was detected at <br /> concentrations of 1,500 and 660 parts per billion (ppb) in wells MWI and MW2, respectively <br /> Benzene was detected at concentrations of 92 and 33 ppb, respectively <br /> MTBE was not detected in any of the groundwater samples Laboratory analytical data are <br /> summarized in Table 2 Laboratory data sheets and chain of custody documentation are included in <br /> Attachment B <br /> The next round of groundwater sampling is scheduled for July 1998 <br /> If you have any questions, please contact the undersigned at(209) 952-3481 <br /> Respectfully, <br /> Ground Zero Analysis, Inc <br /> • C,),��#adv b t,e!5 7 <br /> Jeanne Buckthal ��RED QF <br /> Staff Geologist <br /> GREGORY P. <br /> L STAHL <br /> No 5023 <br /> Gregory P Stahl,RG 5023 <br /> CA Certified Hydrogeologist 264 qlF OF CAl1F���`� <br /> Attachments <br /> PC Mr John Tague, John Pestana QTIP Trust <br /> Ms El=beth Thayer,RWQCB Sacramento <br /> pcstan&036\annua197 doc <br />