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Field Exploratory Boring Log: Well S-4 <br /> OVM Blows/ Sample well Depth Soil Group <br /> Materials Description <br /> PPM 6° Number Construction (ft) (USCS) <br /> Wellbox <br /> o l tt _ Clayey Sand(SC) <br /> Dark yellow brown(10YR 314), moist,65% fine to medium <br /> U sand,20%clay, 15% silt <br /> > <br /> 0 0 <br /> � U <br /> N <br /> E c 5 <br /> 00 2 S4-65 N @ 5' as above, moist,dense <br /> 20 - <br /> Bentomte <br /> 6to7ft <br /> T <br /> Silt(ML) <br /> 7 Dark yellow brown (10YR 3/6), moist,very stiff, 75%silt, <br /> 10 25% fine sand <br /> 12 to — <br /> Clay <br /> 0 5-4-10 <br /> Clay (CL) <br /> Olive brown(2 5Y 414),moist,hard, low plasticity,70% <br /> 9 clay, 20% silt, 10% fine sand <br /> 14 a <br /> 00 20 S-4-15 L 15 <br /> a, <br /> n 4 <br /> M � <br /> � N <br /> � O <br /> O <br /> 10 ; Silt(ML) <br /> 20 S-4-20 a Olive gray (5Y 412), moist, hard, 65% silt, 15%clay,20% <br /> 27 fine sand <br /> 20 <br /> 00 <br /> N <br /> Sand(SP) <br /> t7 Dark olive gray(5Y 312), wet,dense, 95% fine to medium <br /> 14 22 S-4-25 25 sand, 5%silt <br /> 30 Total depth of boring 25 feet <br /> BORING SHELL OIL PRODUCTS COMPANY Borehole Diameter 8 inches CAMB�A <br /> Former Shell Service Station Logged by ! Neely <br /> S_4 1267 Country Club Boulevard Driller Gregg Drilling 240-0943 <br /> Stockton, California Date Started 19-Feb-98 <br /> Date Completed 19-Feb-98 <br />