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= 06 NOV-03 <br /> - EXPLANATION <br /> - � <br /> HANIlIMR LANE Groundwater monitoring well <br /> �'! Destroyed groundwater monitoring well <br /> ® Proposed groundwater monitoring well <br /> MW4 Groundwater elevation contour in feet <br /> -33.26k __ referenced to mean sea level(ft msl) <br /> (<0 SQ,30-Jun-03)- - -— Arrows indicate approximate groundwater <br /> (<0 50)� MW-5 flow direction <br /> 33 61 <br /> _ {<0 50,30-Jun-03) -31.71 Groundwater elevation m ft nisi <br /> Former (<0 50) (<0 50,30-Jun-03) Benzene concentration in parts per <br /> V_3 UST ' billion(ppb),date last sampled <br /> -33.42 Location wooded <br /> (d5,30-Jun-03) %� L ® M�'t''$ field (<0 50) MTBE concentration in ppb <br /> (1,100) 'Existing°-," f� 1. X44 <br /> USTs <x Not detected at reporting limit x <br /> °� <br /> _ MW-2 Approximate hydraulic gradient=0 002 to 0 004 <br /> MW-7 <br /> -33.52 l <br /> ® ® ® UO' (<0 50,30-Jun-03) <br /> (400) MW-9 N <br /> ® <br /> 000 Building 1 <br /> rn Canopy and <br /> y Dispenser IslandsJ� <br /> MW-1 `` 1 <br /> M <br /> - MW-6 1 <br /> -+ -33.36 Domestic well <br /> (<0 50,30-Jun-03) Waste Oil 1 160 feet <br /> (<0 50) Tank 5 <br /> i <br /> `I <br /> ----- --------- ---------------- ------------ <br /> --- FIGURE � <br /> Scale(ft) <br /> a 20 40 ea 2 <br /> 0 <br /> Shell-branded Service Station Groundwater Contour/Chemical <br /> 7700 Moreland Street © Concentration Map <br /> Stockton, California <br /> C A M B R l A September 29, 2003 <br />