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02-Jul 03 <br /> EXPLANATION <br /> Groundwater monitoring well <br /> • Scale(ft) ® Product dispenser number <br /> _N <br /> 0 15 30 60 Groundwater elevation contour in feet <br /> R <br /> /y referenced to mean sea level Arrows <br /> indicate approximate direction of <br /> groundwater flow <br /> HAMPTON STREET -2315 Groundwater elevation in ft msl <br /> (<0 50) Benzene concentration in parts <br /> per billion(ppb) <br /> Planter (<0 50) MTBE concentration m ppb <br /> <x Not detected at reporting limit x <br /> Approximate hydraulic gradient=0 004 <br /> Air/Water Dispenser Planter <br /> MW-2 <br /> -23.15 <br /> (<0 50) <br /> MW-1 (<O 50) (Fence(typ) <br /> f -22.93 <br /> (280) <br /> Canopy (<0 50) \ <br /> Dispenser + <br /> Island(typ} <br /> o <br /> `�Station <br /> d Building <br /> d � <br /> O _— UST Vents <br /> Planter <br /> r] MW_3* <br /> -22.71 VIF- omp <br /> (<0.50) USkComplex <br /> (39) <br /> "' NM-4 d'r Nearest Water <br /> -22 80 * Supply Well <br /> (<0.50) (1,200 feet) <br /> (24) <br /> Planter Planter <br /> FIGURE <br /> ADAMS STREET 2 <br /> Shell-branded Service Station Groundwater Contour/Chemical <br /> 2320 North EI Dorado Street <br /> Stockton, California Concentration Map <br /> C A M B R I A <br /> April 10, 2003 <br />