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19 Apr 42 <br /> LANATION <br />� -- EAST FREMONT STREET <br /> Groundwater monitoring well <br /> Groundwater <br /> elevation contour ------ <br /> in feet referenced to mean sea <br /> level(ft msl) Arrows indicate S-1 <br /> approximate groundwater flow -2881+ 1 Planter <br /> direction 1,200 lam- <br /> i <br /> <250 <br /> i <br /> S4---Well designation , <br /> .28,84—Groundwater elevation,ft msl \\ Existing <br /> <0 50—Benzene concentrations in ground- i i <br /> i\ ! Canopy <br /> <0 50\Water is parts per billion(ppb) \` \ i �-�� (typ) USTs <br /> MTBE concentrations in ground- \\Former USTs-' <br /> water in ppb by EPA Method g—a <br /> 8260 ii i �\ -2881 i <br /> <0 50-�- <br /> <x Not detected at detection limit x <0 50 ti'b$ti <br /> Approx hydraulic gradient=0 001 <br /> Waste Oil Tank W <br /> M <br /> S-3 Q�� s © n i 7d <br /> .28840 <br /> 28 84 �""`_ —.--�• 28 85 <br /> 0-3 <br /> <05 0 Station Building an i------------------- <br /> Lube <br /> _- - ------Lube Bays <br /> � I CrS <br /> Dispenser Island(typ) H <br /> -28.88 <br /> �ClnderBlock wall <br /> .i sS-22 <br /> 28.91 <br /> *<050 <br /> <5 0 ' <br /> Scale(ft) CpNSTET FIGURE <br /> 0 15 30 60 2 <br /> 0 <br /> Shell-branded Service Station Groundwater Contour/ <br /> 2494 East Fremont Street G Chemical Concentration Map <br /> Stockton, California <br /> C A M B R I A February 18, 2002 <br />