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Soil Suitability Study MS-92-67 <br /> raising Arabian horses , the remainder of the present 51 . 73 acres <br /> parcel is devoted to the agricultural use of growing sugar beets . <br /> F <br /> Soil Profile Test : <br /> i- <br /> Excavation to a depth of ten ( 10) feet below the ground <br /> surface was performed for the Soil Profile investigation on Parcel <br /> No . 2 , at the location shown on the attached "Parcel Map" . Two (2) <br /> basic soil layers were found in excavating to the 10-foot depth . <br /> From the ground surface to a depth of seven (7) feet , the soil in <br /> some reference books is identified as San Joaquin Loam . Visual <br /> inspection gives the appearance of a gray clay. Cracks exist in the <br /> ground indicating expansion with exposure to moisture and <br /> contraction with drying . From seven (7 ) to ten ( 10) feet below the <br /> ground surface , the soil was noted to be a whitish gray hardpan <br /> which was extremely difficult to excavate with hand operated tools . <br /> No water was encountered in excavating to the 10-foot depth . The <br />{ San Joaquin County Flood Control And Water Conservation Map <br /> entitled "Lines Of Equal Depth To Water Wells" , dated Fall 1990 , <br /> shows the water to be in excess of 110 feet below the ground <br /> surface . <br /> Percolation Tests : <br /> Three (3) percolation test holes , two (2) on Parcel No . 2 , <br /> E identified as test holes P1 and P2 and one <br /> ( 1 ) on Parcel No . 1 , <br /> identified as test hole P3 were excavated to about a 3-foot depth . } <br /> The location of the three test holes are shown on the attached <br /> "Parcel Map" . <br /> E All percolation tests conducted were performed in accordance t <br /> with the percolation test procedures outlined in the "Manual Of <br /> Septic Tank Practice" published by the Department Of Health <br /> Education And Welfare and the requirements of the San Joaquin <br /> Count Public Health Service Environmental ronmental Health Division . <br /> i <br /> Between May 5 , 1992 and May 7 , 1992 , three percolation tests <br /> were performed on the subject property under my direction in <br /> E: conformance with the San Joaquin County Public Health Service , <br /> Environmental Health Division regulations and the San Joaquin I <br /> County Ordinance Code Standards . 4 <br /> Percolation Test Hole Nos . Pl , P2 and P3 resulted in the <br /> percolation rates and determinations shown on the attached ' <br /> "Percolation Data Sheets" ., and are tabulated as follows : 4 <br /> G <br /> Paul and Jacqueline Polk 3 <br />