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24-Jan-05 <br /> EXPLANATION <br /> ® Direct-Push Soil Boring <br /> Monitoring Well <br /> —N— <br /> Groundwater elevation contour in feet <br /> referenced to mean sea level(ft msl) <br /> Arrows indicate approximate groundwater <br /> flow direction <br /> Scale(ft) 881 Groundwater elevation in ft msl <br /> 0 15 30 60 (0,70) Benzene concentration in parts per billion <br /> (Ppb) <br /> (<0 50) MTBE concentration in ppb <br /> WEST YOSEMITE AVEUNE <x Not detected at reporting limit x <br /> MW-3 Approximate hydraulic gradient=0 01 <br /> .11 <br /> (1,5) Driveway Sidewalk <br /> <0 50) <br /> Drain MW.4 Planter <br /> Planter �� 9.12 <br /> \ (<0 50 Sidewalk <br /> (<0 50) <br /> Sidewalk <br /> MW-1 <br /> 8.81 <br /> (0.70) 1 _ -- Retail <br /> (<0 50) -- <br /> �# Former <br /> is nserIslands <br /> Former Underground <br /> Retail Storage Tanks <br /> A Former <br /> � Payless Shoe <br /> Source <br /> o �/ --- -, <br /> eee <br /> / -J <br /> O <br /> L �: / OOP < <br /> 00,000MW-5 <br /> __ / 9.10 <br /> x (<0 50) <br /> (~ (<0 50) <br /> Sidewalk Retail <br /> O <br /> H <br /> MW-2 Concrete Pad <br /> 895 <br /> (<0.50) <br /> Retail <br /> A (<0 50) <br /> Trash FIGURE <br /> Vo—rimer <br /> 2 <br /> Shell Service Station © Groundwater Contour/ <br /> 1160 West Yosemite Avenue Chemical Concentration Map <br /> Manteca, California C A M B R I A <br /> December 28, 2004 <br />