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E E <br /> ARCO AM/PM <br /> SERVICE STATION <br /> PRIVATE ROAD <br /> 0 30 60 <br /> SCALE IN FEET <br /> E_L GEND <br /> MW- 3 GROUNDWATER MONITORING WELL <br /> MW-•-4 -7 4s) W (-7.84) GROUNDWATER ELEVATION IN <br /> (-7.74) FEE <br /> o T ABOVE MEAN SEA LEVEL <br /> F -1 � , , g i -7.80 — GROUNDWATER ELEVATION <br /> SERVICE 1 CL w CONTOUR IN EAN SEA FEET ABOVE <br /> L J J STATION } \ (CONTOUR INTERVAL-0.10 FOOT) <br /> i <br /> BUILDING ` ` M (-7.84) CALCULATED CALCULATED GROUNDWATER <br /> UNDERGROUND 2GRADIENT DIRECTION AND <br /> 0.005 <br /> USED OIL TANK ' 1 MAGNITUDE IN FOOT PER FOOT <br /> DISPENSER -7 50 F- / <br /> ISLANDS Q 1 W NOTE: <br /> o �o / Potentiometric groundwater elevation <br /> Li <br /> / 4� ` <br /> MW-2\(-7.69) <br /> MW52 ! o % contours were generated with Quicksurf <br /> 1 > using the Kriging method with a spherical <br /> variogrom on a triangulated grid surface. <br /> MW-1 UNDERGROUND\ <br /> (-7.53) FUEL TANKS f <br /> PLANTER <br /> DRIVEWAY / <br /> p42lVE`NAY � / / <br /> TRANSFORMER <br /> FIGURE 2 <br /> POTENTIOMETRIC GROUNDWATER <br /> ELEVATION CONTOUR MAP <br /> SEPTEMBER 18, 1998 <br /> I BP OIL SERVICE STATION NO. 11193 <br /> 3202 WEST HAMMER LANE <br /> MW-6 STOCKTON, CALIFORNIA <br /> . (-7.75) <br /> PROJECT NO. 10-136 <br /> ^�ALISTO ENGINEERING GROUP a <br /> WALNUT CREEK, CALIFORNIA - <br /> f <br /> i <br />