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12-Mar-04 <br /> EXPLANATION <br /> Groundwater monitoring well <br /> ® Product dispenser number <br /> Groundwater elevation contour in feet <br /> referenced to mean sea level (ft msl) <br /> Arrows indicate approximate groundwater <br /> flow direction <br /> -3867 Groundwater elevation in ft msl <br /> (<0 50) Benzene concentration in parts per <br /> billion(ppb) <br /> (<0 50) MTBE concentration in ppb <br /> <x Not detected at reporting limit x <br /> High Rise Sign <br /> Approximate hydraulic gradient=0 001 <br /> Trash enclosure <br /> MW-2 Building <br /> 36.04 <br /> (<0.50) <br /> o Current and Former Car <br /> all Wash <br /> UST Location a <br /> Vacuum <br /> Air/water6 0 <br /> � � o <br /> MW-1 -Canopy <br /> 3603 <br /> (74) <br /> Dispenser Island(tY <br /> P) <br /> MW-3 \ MW-4 <br /> -35.96 �-36.01 <br /> (<0 50) <br /> (<0 50) planter <br /> (<0 50) 1<0 50) <br /> WATERLOO ROAD <br /> Scale (ft) FIGURE <br /> 0 15 30 60 <br /> rn <br /> Base map from Fupro map dated 11 Nov 94 2 <br /> Shell-branded Service Station Groundwater Contour/ <br /> 4315 Waterloo Road © Chemical Concentration Map <br /> Stockton, California <br /> C A M B R I A <br /> January 26, 2004 <br />