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20 Mar 00 <br /> EXPLANATION <br /> Groundwater Monitonng Well <br /> Groundwater elevation contour in feet <br /> referenced to site datum Arrows indicate <br /> qy \ approximate groundwater flow direction <br /> \ <br /> 6615 Groundwater elevation in feet referenced <br /> W \ to site datum <br /> (<a Sao) Benzene concentration in ppb <br /> V \ (32 7) MTBE(by EPA Method 8020) <br /> concentration in ppb <br /> COD \ <x=Not detected at detection limit x <br /> \ Approximate hydraulic gradient=0 02 <br /> 0 <br /> Station \ <br /> Building <br /> Canopy and \ <br /> Dispenser Island \ <br /> MW-3 \ <br /> 6615 <br /> (<0 500) <br /> + <br /> -(327) <br /> Existing USTs MW-2 <br /> +\65.93 <br /> 1 <br /> 657--'. <0 500) <br /> _ � (<2 50) <br /> Canopy and I Former UST <br /> O Dispenser Islands Location <br /> - ------- ------------ MW-1 <br /> 6520 ------- ----- <br /> (<0 500) _N_ <br /> t<2 so <br /> HAMMER LANE <br /> Scale <br /> FIGURE <br /> 0 15 34 60 <br /> 1 Inch=30 Feet <br /> Banc map from Fugro map of 6 Fch-96 <br /> Shell-branded Service Station Groundwater Contour/ <br /> 7910 Lower Sacramento Road Chemical Concentration Map <br /> Stockton, California <br /> Incident No 98996180 C A M B R I A <br /> February 2, 2000 <br />