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10 Sep 02 <br /> EXPLANATION <br /> Groundwater monitoring well <br /> Groundwater elevation contour in feet <br /> referenced to mean sea level (ft msl) <br /> Arrows indicate approximate groundwater <br /> flow direction <br /> -36.00 Groundwater elevation in ft msl <br /> (<0.50) Benzene concentration in parts per <br /> billion(ppb) <br /> (63) MTBE concentration in ppb <br /> <x Not detected at reporting limit x <br /> High Rise Sign Approximate hydraulic gradient= 0 002 <br /> Trash enclosure <br /> MW-2 <br /> 36 03 Building <br /> (<0 50) <br /> (10) �. <br /> o� Car <br /> Wash <br /> Current and Former <br /> Vacuum UST Location <br /> Air/water � � o <br /> u• <br /> MW-1 -Canopy-36 00 <br /> w (<0 50) <br /> U% (63) <br /> :a <br /> 0 <br /> NM-3 � Dispenser Island(tip) <br /> -3589 MW-4\ -35.96 <br /> (<0.5 9 <br /> (<0 50) (<0'50) Planter <br /> (<0 50) <br /> WATERLOO ROAD <br /> Scale (ft) <br /> FIGURE <br /> 0 15 30 60 <br /> J. <br /> Base map from Fugro map dated 11 Nov 94 2-1 <br /> Shell-branded Service Station Groundwater Contour/Chemical <br /> 4315 Waterloo Road G Concentration Map <br /> Stockton, Califomla <br /> C A M B R I A <br /> July 31, 2002 <br />