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2s-oci-02 <br /> _ EXPLANATION <br /> Groundwater monitoring well <br /> HAMMER LANE Destroyed groundwater monitoring well <br /> Groundwater elevation contour in feet <br /> MW4 referenced to mean sea level(ft msl) <br /> -32 19 Arrows indicate approximate groundwater <br /> `� — — F'- "' - MW-g- flow direction <br /> -3235 <br /> �(<0 SO} F YJ _ <br /> "'-4 <0 50) -32.19 Groundwater elevation in ft msl <br /> 1d'j <0 50) (<0 50) Benzene concentration in parts per <br /> � 1 <br /> billion(ppb) <br /> Former UST (<0 50) MTBE concentration in ppb <br /> ExisLin Location Wooded mi <br /> Ts r <x Not detected at reporting lit x <br /> field <br /> Le Approximate hydraulic gradient=0 002 <br /> - MW-3 beat, <br /> I -3214 MW-2 <br /> (<20) * -32.26 <br /> _ (7,200) E Lf<2.0) <br /> 11 1(520) <br /> Canopy and <br /> Dispenser Islands <br /> I Building <br /> d <br /> H <br /> OMW-1 <br /> I <br /> y i <br /> -N- <br /> MW-6 '` I <br /> -3223 1 <br /> (<0 50) Waste Gil scale Sff1 <br /> _ r1L (<0 50) Tank <br /> __— 0 20 40 e0 <br /> FIGURE <br /> 0 <br /> 3 <br /> Shell-branded Service Station Groundwater Contour/Chemical <br /> 7700 Moreland Street Concentration Map <br /> Stockton, California <br /> = C A M B R I A September 30, 2002 <br />