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r r r r r r r r r r rr r r r r r r r r <br /> m <br /> N Entrance <br /> ~ SUBSTATION <br /> OW-4 2AB LEGEND <br /> Observation well <br /> Relative water elevation <br /> ` in well <br /> .o <br /> u Groundwater potentiometric <br /> 2.18 3-m ` `�� �2' 2.14 surface contour <br /> OW-2 ��° OW-1 <br /> Note: <br /> N Nti :::•• Hydraulic gradient <br /> Q <br /> =0.3 ft./70 ft. <br /> FORMER <br /> =0.004 ft. ft. <br /> TANK <br /> ft./ <br /> ft. <br /> LOC N O <br /> '2 <br /> .3 <br /> All elevations are relative to <br /> an assumed common datum. <br /> OFFICE BUILDING <br /> a <br /> 2- <br /> 2.46 <br /> OW-3 <br /> 0 10 20 feet ................................................................. <br /> ....................... ..... . ........................ <br /> FIGURE 6. Relative Potentiometric Contour Elevations Estimated <br /> for Tracy Service Center,January 11, 1988 <br />