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Ground water monitoring data collected on 30 April 2002 train wells <br />MW -9B, MW -9B MW -10D MW -11C MW -12C and MW -13C <br />All units reported in feet relative to mean aha level <br />Ground water elevations relative to San Joaquin County Benchmark Datum No ZAA-13 4 <br />Ground water elevations of SECONDARY kQUIFER ZONE <br />i <br />STAR STREET <br />oR 0N ROAD <br />Un _216 <br />LEGEND <br />M1► -11C Flag City Chevron <br />-2 20 Ground Water Monitoring Well Location <br />with reported ground water elevation <br />1 Three B a Truck Plaza <br />Ground water monitoroxg well location <br />r <br />--210 Ground water elevation contour line <br />i <br />® Domestic Drinking Muter Well Location <br />® Existing Building Structure <br />} Inferred ground water now direction <br />4 and gradient <br />s ! <br />Rose Diagram Showing Frequency of <br />itr1 1 Historical Ground Water Flow Direction <br />t �s <br />at Three B'a Former Tank Pat Area <br />s <br />// Bose Diagram Showing Historical Ground <br />Water Flow Direction and Gradient at <br />Flag City Chevron Tank Pit area <br />11 r Mue arrows indlcete data collected before <br />start of ground water primp -and -treat. <br />\� Z/ Red Arrows indicate data collected after <br />start-up of ground water pump--and-treat <br />i <br />a <br />OF <br />O ■ <br />Q <br />—41 <br />C� <br />a.. <br />a <br />b' <br />o <br />v <br />U <br />qwa <br />C <br />m <br />c <br />x <br />a <br />cc�a <br />a <br />OF <br />O ■ <br />