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Total depth of boring, 45 ft Diameter of boring, 8 in Date drilled, 11/21/91 <br /> Casing diameter: 4 in Length, 45 ft Slot size, 10 <br /> Screen diameters 4 in Lengths 30 ft Material type, PVC <br /> Drilling Company, XON Exploration Driller, Jim <br /> Method Used, Hollow—stern_Auger _ Field Geologist, C€aud:o <br /> Signature of Registered Professionsh <br /> Registration No., 43139 State, Calif <br /> co <br /> DEPTH SAMPLE Bw P.LD. USCS DESCRIPTION WELL <br /> NO, m CODE CONST <br /> 0 Asphalt <br /> 2 CL Silty clay black, damp <br /> 4 <br /> S-5 14 ppmv Cloy some silt, dark brown, stiff <br /> s ' <br /> i8 <br /> 14 5-10 36 0 ML Silt same clay, light olive green, slightly damp, <br /> ppmv hard (orange staining, black nodules) <br /> 12 <br /> 14 - <br /> 5-15 44 0 <br /> ppmv <br /> 16 <br /> 78 <br /> 20 S-20 42 ppmv Trace fine—grained sand (trace orange staining) <br /> (section continues downward) <br /> LOG OF BORING: B-15/VW-6 PLATE <br /> lt�itlrs ARCO Service Station No. 6100 <br /> PILE NO 25775 South Patterson Pass 31 <br /> PROJECT NO. 30041-2 0041812A I Tracy, California <br />