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& ;�,�t)t ; 111_ Pile No. S-1182 -3 <br /> May 31, 1972 <br /> PAGE FOUR <br /> All chemical tests were performed for our firm by San <br /> Joaquin Research Laboratories . <br /> The results of the chemical tests are summarized on <br /> Table II . The results of the tests on the soil samples are <br /> own graphically on Plate II . The results of the pH, total <br /> dissolved solids, suspended solids , and total hardness tests <br /> re graphically shown on Plate III. <br /> DISCUSSION <br /> The subsurface soils at the site consist of interbedded <br /> strata of silty clay, clayey silt, and silty sand. The clay <br /> and clayey silt are relatively impermeable soils . We estimate <br /> these soils have a coefficient of permeability on the order of <br /> 10®b to 10_7 centimeters per second. The silty sand is some- <br /> what more permeable. We estimate that this soil has a coefficient <br /> of permeability in the range of 10-4 to 10' 5 centimeters per <br /> second . 'The clay and clayey silt soils would tend to inhibit <br /> e vertical movement of water. <br /> In order to compare the chemical tests, the following <br /> averages were computed: <br /> The average value of each test made on <br /> the four process water samples . <br /> 2. The average value of each test made on <br /> groundwater samples from Borings 1, 2, <br /> and 3. fi <br /> These values were then compared to the test results from �s <br /> P <br /> Boring 4. The assumption is that the groundwater in Boring 4 <br />