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GROUND WATER <br /> From the San Joaquin County Flood Control and Water <br /> Conservation District Study we find that the ground <br /> water depth is approximately 28 feet and that the <br /> gradient falls westerly at approximately 3. 5 feet per <br /> mile. See Exhibits 3 and 4 . <br /> Water samples have been collected by a laboratory ; <br /> however , the results are not yet available. The <br /> results will be submitted as an addendum to this report <br /> when available. <br /> SOILS AND PERCOLATION TEST <br /> Per the "Soils of San Joaquin County" , as published by <br /> the University of California , the soil is Hanford Sandy <br /> Loarn . <br /> On September 11 , 1992, we ran percolation tests on <br /> Parcels 1 and 2. It was found that the percolation <br /> rates were 19 and 19/min/inch respectively . See <br /> Exhibit 5. <br /> In all cases the test holes were b" diameter by 3 feet <br /> deep. The tests were run under permit and inspection <br /> by the San Joaquin County Health Department . <br /> CONCLUSION <br /> The area is suitable for septic systems. It is <br /> recommended that 8,000 S .F . be reserved on Parcels 1 <br /> and 2. Seepage pits should not be allowed . <br /> Based upon the percolation test and interviews, it is <br /> my professional opinion that a septic system will not <br /> adversely effect the first water aquifer . <br /> LIMITATIONS <br /> The conclusions of this report are based on the <br /> information provided regarding the existing and <br /> proposed development , and on the site conditions as <br /> they existed at the time we performed the percolation <br /> test . It was assumed that the test hole and <br /> percolation test results are representative of an <br /> average of the subsurface conditions in the general <br /> area . <br />