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File No. 20-3397-02 n►� h =E : NFELDER <br /> March 19, 1991 <br /> the County requires a percolation rate of 60 minutes per <br /> inch, or faster, at the 3-foot depth. The four 3-foot <br /> deep tests performed passed with a percolation rate of <br /> 60 minutes per inch for parcels 1, 2 and 4 , and a <br /> percolation rate of 40 minutes per inch for parcel 3 . <br /> The County approved percolation test sheets are included <br /> with this rsoort. <br /> ITEM C-3 : <br /> "The depth and gradient of the water table. " <br /> During our site visit on March 11, 1991, we were only <br /> able to measure groundwater in one well (location 3 on <br /> Plate I) . The groundwater was measured at a depth of <br /> approximately 8 feet below existing ground surface. Mr. <br /> Stefani indicated that the groundwater depth in the last <br /> few years has generally varied from approximately 8 to <br /> 10 feet deer in his wells on the site. We note that <br /> groundwater was encountered at depths of approximately <br /> 7 to 7-1/2 feet in 2 test borings drilled near the center <br /> of the site in April 1990 . Groundwater was encountered <br /> at a depth of approximately 5 feet in a test boring <br /> drilled at the northwest corner of the site in December <br /> 1987 . Test pits excavated adjacent to the Bishop Cut and <br /> Telephone Cut sloughs in March 1990 encountered <br /> groundwater seepage at depths varying from approximately <br /> 3-1/2 to 8 feet. The regional groundwater depth map <br /> published by the San Joaquin County Flood Control and <br /> Water Conservation District, Plate II, indicates the <br /> depth to groundwater in this area was less than <br /> approximately 10 feet in Spring 1990 . <br /> Copyright 1991 Kleinrelder, Inc. 4 <br />