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Field Exploratory Boring Log SB-4 <br /> OVM Blows/ Sample Well Depth Soil Group <br /> M 6" Number Construction (ft) (USCS) Materials Description <br /> Concrete&base rock 0 tol' <br /> Clay (CL) <br /> Black(7 5 YR N2/0 ),moist, moderate plasticity,90%n clay, <br /> 10% silt, <br /> @ 4' As Above-moist <br /> 5 — <br /> 0 SB-4-6 5 <br /> 0 SB-4-115 10 <br /> @ 10' As Above- light olive brown (2 SY 5/3), moist, <br /> 65%clay, 25% silt, 10% line sand <br /> Clayey Sand (SC) <br /> Dark greenish gray(5GY 411), moist, 80% fine to medium sand, <br /> SB-4-16 5 15 20% clay <br /> 54 S134-21 5 20 Clay(CL) <br /> _ Brown to dark brown(IOYR 4/3),moist,low plasticity,60%clay, <br /> 30 silt, 10% fine sand <br /> Silt(ML) <br /> 25 Brown to dark brown(10YR 413), moist, 60% silt, 30 clay, <br /> 856 SB-4-265 <br /> 10% <br /> sand <br /> 173 SB 4-31 5Page I of 2 <br /> 30 — @ 30' As Above - moist <br /> BORING SHELL OIL PRODUCTS COMPANY Borehole Diameter 5 inches CAMBRA <br /> Shell Service Station Logged by J Neely <br /> SB-4 6131 Pacific Avenue Driller Gregg Dnlling 97374 <br /> Stockton, California Date Started 2-Jul-97 <br /> Date Completed 2-Jul-97 <br />