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RG <br /> �1 <br /> ). H. KLEINFELDER & ASSOCIATES <br /> 3.6 MONITORING WELL ELEVATION SURVEY <br /> The relative elevations of the top of the two-inch PVC casings will be <br /> surveyed for the three monitoring wej.ls. The casing elevations will be <br /> tied into an assumed elevation or a nearby county or USGS benchmark. <br /> Depth to the static ground water table will be measured from the top of <br /> each PVC casing. The depth to water will then be subtracted from the <br /> elevation of the top of the well casing to provide a relative water table <br /> elevation for each monitoring well toration and to assess the approximate <br /> local ground water gradient direction. <br /> , a <br /> M 7 <br /> 36—E7—iD37 <br />