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7-Feb 03 <br /> u <br /> �N11 Former <br /> � m Former <br /> Build <br /> g � Restrooms <br /> E--- -1 <br /> M'4+ Former <br /> -23.71 Former Product <br /> (<0 50) Piping Trench Dispenser <br /> (typ <br /> (<0 50) <br /> } <br /> MW-5 <br /> Q <br /> -2383 <br /> / r r } (<0.50) <br /> E., <br /> -2374 , it��---17: 1, <br /> �-- �--(<0 50) <br /> I , <br /> ------- 6 i i r Former j5 <br /> 3 ,Former USTs <br /> (2.4) -- ___--- <br /> *2 ,Building ¢-- <br /> r- <br /> I Fl II <br /> , I II II <br /> ',13'78 r II <br /> II II <br /> MW-3 L ---------- <br /> -2379 <br /> ----------2379 � / MW-2 <br /> (<0 50) 23 82�� +50) -2385 <br /> E-1 _ <br /> (<0 50) (<0 50) <br /> (5 0) <br /> DrivewaySidewalk O Driveway <br /> EXPLANATION EAST CHARTER WAY <br /> Groundwater Monitoring Well <br /> Groundwater elevation contour in feet referenced to <br /> mean sea level(ft msl) Arrows indicate <br /> approximate groundwater flow direction <br /> -2376 Groundwater elevation in ft msl _ <br /> (<0 50) Benzene concentration in parts per billion(ppb) <br /> (<5 0) MTBE concentration in ppb <br /> <x Not detected at reporting limit x FIGURE <br /> Scale(ft) <br /> Approximate hydraulic gradient=0 001 0 15 30 60 3 <br /> Former Shell Service Station Groundwater Contour/Chemical <br /> 1313 East Charter Way ® Concentration Map <br /> Stockton, California <br /> C A M B R I A January 22, 2003 <br />