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Ti& 1 10 <br /> Groundwater Monitoring Data 2 of 2 <br /> ARCO Service Station No. 2186 } <br /> 3212 North California Street <br /> Stockton, California <br /> Well Elevation of Static Water[i] Top of Elevation of Total <br /> Sample Number Date Top of Casing Level Screen [2] Groundwater TPHG Benzene Toluene Ethylbenzene Xylenes MTBE Observations <br /> VW-3 05/23/96 NM 45.76 41.80 NM 290 <0.5 <0.5 <0.5 <0.5 <3 No FP, No S <br /> 11/27/96 NM 51.15 NM 280 <0.5 <0.5 <0.5 <0.5 <3 No FP, No S <br /> 03/21/97 NM 42.49 NM 180 <0.5 <0.5 <0.5 <0.5 <3 No FP, No S <br /> 05/22/97 NM 44.28 NM 240 <0.5 <0.5 <0.5 <0.5 <3 No FP, No S <br /> 08/20/97 NM 50.21 NM 200 <0.5 <0.5 <0.5 <0.5 <5 No FP, No S <br /> [1]Measured below top of casing. MTBE=Methyl tert-butyl ether <br /> [21 Measured from ground surface. FP=Free product.Measured in feet. <br /> *=Raised MRL due to high analyte concentration requiring sample dilution. S=Sheen. <br /> **=Reporting limit raised due to matrix interference. NM=Not measured. <br /> Analytical results in parts per billion(ppb). NA=Not analyzed. <br /> Elevation datum is mean sea level. <br /> PHG= Total petroleum hydrocarbons as gasoline. <br /> <=Below detection limit for the analytical method used. <br /> KWsW905114703\100197NILXLS EMCON <br /> shectl 106197 <br />