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10 Dec 03 <br /> s , <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 /> High Rise Sign <x Not detected at reporting limit x <br /> Approximate hydraulic gradient=0 002 to 0 009 <br /> Trash enclosure <br /> MW-2 Building <br /> 38 67 <br /> (<0.50) <br /> Current and Former Wash <br /> -38 65 UST Location a <br /> Vacuum <br /> Air/water 6 <br /> -38 63 <br /> MW-1 Canopy <br /> -38 61 <br /> -38.61 -- (<0 50) <br /> (46) e <br /> Dispenser Island (typ) <br /> MW-3 �6�/ MW-4 <br /> -3859 3 3g?6� +-38 67 <br /> (<0 50) (<0 50) <br /> (<0 50) (<0 50) Planter <br /> WATERLOO ROAD <br /> Scale(ft) <br /> FIGURE <br /> I <br /> 0 15 30 60 <br /> Base map from Fupro map dated 1 t Nov 94 2 <br /> _j <br /> Shell-branded Service Station Groundwater Contour/ <br /> 4315 Waterloo Road G Chemical Concentration Map <br /> Stockton, California <br /> C A M B R I A October 30, 2003 <br />