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005-090-13 Roy White, 3810 East Barron Road <br /> Original septic system is 31 years old <br /> No problems with leach area <br /> Depth to ground water is 92 f feet <br /> 005-090-16 V. & G. Harrison <br /> 26854 North Nichols Road <br /> Septic system is 30t years old <br /> Tank was pumped three times in that time <br /> Depth to ground water is unknown <br /> 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 90 feet and that the <br /> gradient falls easterly at approximately 8 feet per <br /> mile. See Exhibits 2 and 3 . <br /> F.G.L. Environmental analyzed the well water for DBCPs <br /> and nitrates February, 1996 . The results of those <br /> tests are enclosed as Exhibits 5A through 5F. <br /> SOILS <br /> Per the "Soils of San Joaquin County" , as published by <br /> the University of California, the soil is San Joaquin <br /> Loam. <br /> PERCOLATION TESTS <br /> A deep percolation test was performed on Parcel 1 in <br /> October of 1993 . The results of that test are included <br /> as Exhibit 4A through 4E. <br /> In April of 1996 this firm performed percolation tests <br /> on the remaining parcels. Only the test on Parcel 4 <br /> passed (See Exhibit 6) . The shallow tests on Parcels 2 <br /> and 3 failed. Due to the poor qualities of the <br /> surrounding soil, Parcel 4 is considered to have failed <br /> the shallow percolation as did the other parcels. <br /> In May the client hired Anderson and Associates to run <br /> deep percolation tests . The results of those tests are <br /> included as Exhibits 7A through 7 <br />