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1 l <br /> RINCON STRSET scale <br /> 0 15 30 60 Feet <br /> 1 Inch=30 Feet <br /> S.2 <br /> -27.51 / <br /> (ND) ' <br /> w � � <br /> W Canopy At <br /> Station Building and <br /> a " t Lube Bays <br /> Waste Oil Tank S-3 <br /> -27.29 <br /> � <br /> Gr / Form (ND)UST's ( ) <br /> w <br /> pq Dispenser Islands O EXPLANATION <br /> +--+ Canopy o ° O <br /> Groundwater Monitoring Well <br /> O + Soil Boring <br /> UST' 'ZI i °° ° 1160.51 Ground water elevation in feet <br /> 'i " O <br /> i u <br /> 11 <br /> ii H °° (5000) Benzene concentrations in ppb. <br /> ++ 1111 ° " � .27.2 ° (<2500) MTBE Concentrations in ppb. <br /> l� Dispenser Islands" " Ground water elevation contour in feet <br /> .. <br /> " referenced to mean sea level(MSL). <br /> Planter i t7I3 i S-1 Arrows indicate approximate ground <br /> " `/ water flow direction. <br /> " SB-3 R <br /> i 1-27.17 !Approximate hydraulic gradient=0.002 <br /> ($000) Notes: <br /> Depth to groundwater was guaged on <br /> 13-Aug-98, Groundwater samples <br /> collected 13-Aug-98 from S-I and S-2,and <br /> F R E M O N T STREET from S-3 on 19-Aug-98, <br /> PLATE GROUND WATER CONTOURICHEMICAL CONCENTRATION MAP AD nA <br /> T <br /> 2 Shell-branded Service Station A DILL <br /> 2494 Fremont Street 240-0797 <br /> Stockton California <br /> Drawn by:TNM Date: 29-Sept-98 Approved By: Date:Cj.30-W <br />