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Project No 58080-06-03 <br /> October 16, 1995 <br /> Page 3 <br />' Analytical Results <br /> A cumulative summary of groundwater analytical data is presented on Table II TPHg was detected <br />' in each monitoring well at concentrations ranging from 52 to 600 micrograms per Mer(ug/l) TPHd <br /> was not detected in each monitoring well BTEX was detected in each monitoring well at <br /> concentrations ranging from 14 to 51 ug/l benzene, 12 to 240 ug/l toluene, 0 5 to 6 4 ug/l <br />' ethylbenzene and 1 7 to 24 ug/l total xylenes MTBE was detected in MW-1, MW-3 and MW-5 <br /> at concentrations ranging from 35 to 520 ug/1 <br /> 1 �1,2.Dzchl2roethane was detected in MW-1, MW-3 and MW-5 at concentrations ranging from 5 5 <br /> to 38 ug/l Trichloroethene was detected at a concentration of 0 5 ug/l in MW-1, 2 9 ug/l in MW-2 <br /> and 2 6 ug/l in MW-3 Tetrachloroethene was detected in each well at concentrations ranging from <br />' 1 0 to 6 0 ug/l and 1 2-Dichloroethene was detected in MW-3 at a concentration of 1 1 ug/l <br />' DISCUSSION <br /> . The distribution of TPHg and MTBE beneath and upgradient(north) of the site continues t suggest <br /> uggest <br />' an offsite source for these groundwater impacts This is evidenced by the fact that the highest <br /> MTBE concentration was detected in well MW-5 located north of the site and immediately <br /> downgradient of the Bokiadi's service station site located north of Lodi Avenue <br />' WORK IN PROGRESS <br /> A Problem Assessment Report dated May 5, 1995 has been prepared and forwarded to the San <br />' Joaquin County Public Health Services for review and approval The 4th Quarter 1995 groundwater <br /> monitoring event for the site has been scheduled for December 12, 1995 <br /> 1 <br /> 1 <br /> 1 <br /> • <br /> r <br /> 1 <br />