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i <br /> WELL CONCENTRATIONS <br /> Former Texaco Service Station <br /> 440 W. Charter Way <br /> Stockton, CA <br /> I � <br /> MTBE Depth to GW SPH <br /> Well ID Date TPPH B T li E X MTBE 8020 8260 TOC Water Elevation Thickness <br /> uglL u IL) (u IL) (ug/L,) {uglL {uglL) (ug/L) (MSL) (ft) {MSL) (ft) <br /> MW-17 05/25/1999 <500 <5 0 <5 0 11<5 011 <5 0 <25 NA 1074 2012 -938 NA <br /> MW-17 08/18/1999 254 786 11 1 1' 1177111 178 <2 50 NA 1074 2086 -1012 NA <br /> MW-17 11/05/1999 <50 0 <0 500 <0 500 <0 500 <0 500 <2 50 NA 1074 2009 -935 NA <br /> MW1 u ». � 74yr 2 � �� � 370 _ 4kt; � �10 _ I NX : <br /> 1' <br /> I <br /> Abbreviations <br /> TPPH =Total petroleum hydrocarbons as gasoline by modified EPA Method 8015 <br /> BTEX=benzene,toluene,ethylbenzene,xylenes by EPA Method 8020 <br /> MTBE=methyl-tertiary-butyl ether 53 <br /> TOC=Top of Casing Elevation a <br /> SAN =Separate-Phase Hydrocarbons i> <br /> GW=Groundwater <br /> ug/L=parts per billion <br /> msl=Mean sea level <br /> ft=Feet 1 <br /> <n= Below detection limit <br /> NA=Not applicable l <br /> ND= Not detected at or above the minimum quantitation limit <br /> � I <br /> Pa <br /> i <br /> i, <br />