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Chevron U.S.A. - Page 14 <br /> 'w 11.0 DISC1)SSI0N'OF FINDINGS <br /> Exploratory soil borings were advanced at the subject property in order to <br /> F obtain subsoil samples for observation of subsurface conditions and chemical <br /> analysis; to develop Jogs of soil borings; and for the installation of ground <br /> water monitoring wells. <br /> The subsoils and sediments encountered at the subject property were <br /> genera <br /> comprised of fine grained sands with silt and clay, with interbedded <br /> silty sand was encountered in all of the soil borings <br /> lenses of silts and clays. <br /> eet below the existing grade to the maximum depth <br /> at an approximate depth of 76 f <br /> of our exploration. <br /> Ground water was encountered in each soil boring at an approximate depth of <br /> y 71 feet below the existing grade' at the time of our field exploration. Each <br /> mpleted as a ground water <br /> exploratory soil boring was comonitoring <br /> well. The <br /> monitoring wells were constructed utilizing 4 inch diameter PVC flush-thread well <br /> casing. The screened interval of each well was set with approximately 10 feet <br /> above and below the encountered ground water level at tha time of our field <br /> study, <br /> 1p establish a surface elevation. which was <br /> Each well was surveyed to he <br /> utilized in the evaluation of ground water depth, gradient, and direction of <br /> flow. The ground water elevation calculated from measurements made at the time <br /> of our field study were utilized in assessing ground Kater gradient and irec Lo . <br /> .. ...- <br /> of ground water flow at the subject property. Based upon review of the ground <br /> water elevation data and locations of the ground water monitoring <br /> wells, an <br /> i <br /> L�,1�tE5 5�N10ORE <br />