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02-Jan-02 <br /> EXPLANATION <br /> Groundwater monitoring well <br /> ® Soil boring <br /> Groundwater elevation contour in feet <br /> referenced to mean sea level(ft msl) <br /> Arrows indicated approximate <br /> groundwater flow direction <br /> -33.60 Groundwater elevation in ft msl <br /> (<0 50) Benzene concentration in parts per <br /> billion(ppb) <br /> (2 6) MTBE concentration in ppb <br /> <50/<0 50/33/89-92' TPHg/Benzene/MTBE <br /> concentrations in groundwater <br /> High Rise Sign samples from CPT boring in <br /> ppb/Depth in feet <br /> <x Not detected at detection limit x <br /> Note All analyses by EPA Method 8260E Groundwater samples from <br /> CPT-5 collected on November 5,2001 Monitoring wells sampled and <br /> gauged on November 16, 2001 <br /> Approximate hydraulic gradient=0 1 <br /> N,-2 Building <br /> -3360 <br /> (<0.50) <br /> (<0 50) Car V <br /> Wash <br /> CPT-1 <br /> Vacuum Current and Former58/<0 50/57171-74' <br /> p UST Location 501<0 50/15183-86' <br /> <50/<0.50/33/89-92' <br /> Air/water o <br /> i <br /> MW-1 y Canopy <br /> -3357 <br /> MW-3 (<0 50) <br /> -3350 (34) <br /> (<0 50) <br /> (2 6) <br /> MW-4 <br /> Dispenser Island(typ) <br /> SV, <br /> V -3018 <br /> �. (<0 50) <br /> (<0 50) Planter <br /> WATERLOO ROAD <br /> Scale(ft) FIGURE <br /> 0 15 30 60 <br /> a <br /> Bau map from Fugto map dated 11 Nov 94 3-1 <br /> 46 <br /> Shell-branded Service Station Groundwater Contour/Chemical <br /> 4315 Waterloo Road G Concentration Map <br /> Stockton, California <br /> C A M B R l A November 5 and 16, 2001 <br />