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12-Nov-02 <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 /> -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 <br /> Approximate hydraulic gradient=0 002 <br /> Trash enclosure <br /> MW-2 <br /> 38.42 Building <br /> (<0.50) <br /> (<5 0) <br /> Car c <br /> o Wash <br /> Current and Former <br /> Vacuum UST Location <br /> Air/water zdc'' <br /> eo <br /> r "A <br /> `u'd, �—Canopy <br /> MW-1�- 8 <br /> -38.40 <br /> ` <br /> <0.,5 © o <br /> (41) . <br /> MW-3 \ Dispenser Island(typ) <br /> -38.34 \ MW-4 <br /> ��'• (<0.50) +-38.35 <br /> (<5�) (<0.50) Planter <br /> (<5 0) <br /> WATERLOO ROAD <br /> Scale (ft) FIGURE <br /> 0 _ 15 30 60 <br /> rn <br /> Base map from Fugro map dated 11 Nov 94 <br /> 2- <br /> Shell-branded Service Station Groundwater Contour/ <br /> 4315 Waterloo Road © Chemical Concentration Map <br /> Stockton, California <br /> CAMBRIA <br /> October 11, 2002 <br />