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Page Number Four <br /> P4Arrn-T-1-1 '1 1( P=*-m*4-9. <br />A concrete deck will bu constructed around the edge <br />of this pool. In order to provide adequate support to this deck, <br />it is recommended that the surface soils be stripped of all <br />growth and that the subgrade soils thus exposed be scarified to <br />a depth of 6 inches and recompacted to dry densities in excess <br />of 90 percent of the maximum dry density obtainable in the <br />Modified AASHO Compaction Test. Any fill required under this <br />deck should consist of the sand soil obtained from the excava- <br />tion, and this material should be compacted to dry densities in <br />excess of 90 percent of the maximum dry density obtainable in <br />the Modified AASHO Compaction Test. If this is done, then the <br />slab will be stable. <br />A 1-foot layer of organic silty fine sand soil was <br />encountered in Test :Hole Number U-2 at a depth of 6 feet. This <br />material will not seriously affect the stability of the pool <br />unless the excavation is of such a depth in this area tnat tne <br />bottom of the pool will be located on this organic sand soil. <br />If the excavation exposes this organic sand soil, then the <br />organic sand soil should be removed and replaced with an in- <br />organic sand material, compacted in place. <br />The ground water table was located at a dept_i of 5 to <br />6 feet at the time the test holes were drilled. This ground <br />water table will fluctuate considerably, dependent upon the <br />elevation of the water in the river and the amount of pumping