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I <br /> -i KLEINFELDER <br /> 4.6 MONUORIN,G WELL SURVEY <br /> Each of the three ground water monitoring wells were surveyed by Tom O. Marrow,Inc.,a <br /> licensed surveyor of West Sacramento,California. The top of the well casing was surveyed <br /> for both horizontal and vertical control. Depth to ground water measurements were made <br /> from the survey paint on the top of the casing. The survey was performed using an <br /> assumed local datum of 100 feet. Well survey data is used in <br /> - . Y determining ,he general <br /> r ground water flow direction. <br /> 4.7 DEPM TO WATER MEASUREMENTS <br /> Depth-to-ground water measurements were made on three occasions;June 29,July 11,and s <br /> October.4, 1989. These measurements were made in order to assess a general ground <br /> water flow direction and to determine the volume of water to be removed from monitoring f <br /> wells prior to sampling. Depth-to-water measurements were related to the surveyed <br /> elevation and this data appears on Table 2. Depth-to-.rater measurement will be made <br /> prior to any future ground water sampling. <br />�J <br /> t <br /> 3 <br /> { <br /> v <br /> EBMUD-001-89-001 . 5. <br /> �\ 5 t <br />