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Total depth of borings 69 ft- Diameter of borings 8 25 in Date drillods 3/4/92 _ <br /> Casing diameters 2 in Lengths 49 ft Slot sizes 0 010 <br /> . <br /> Screen diameter, 2 in Lengths 20 ft Material type. PVC <br /> Drlliing Company, Woodward Drilling Co Driners Erik Robert <br /> I <br /> Method Useds Hollow—stern Auger Field Geologists Richard Aiden <br /> Signature of Registered Professionals <br /> Registration Nos 4313 States Calif <br /> r <br /> SAMPLE ca USCS DESCRIPTION WELL <br /> DEPTH NO. P.I.D. CODE CONST. <br /> t <br /> 0 Q 25 ft of as halt over 0 25 ft aggregate <br /> CL Clay, grayish black, slightly damp <br /> 2 . <br /> NIL Silt, moderate yellowish brown, slightly damp <br /> r 4 <br /> 8 Silt, mottled pale to moderate yellowish brown, <br /> 6 S-6 43 ppmv slightly damp, hard <br />� S <br /> - 10 - <br /> S-11 52 $ Silt, as to 5 ft , with calcite veins and concretions <br /> ppmv <br /> r <br /> 12 ♦, <br /> 14 - <br /> 47 Silt, moderate yellowish brown, slightly damp, hard, •' - <br /> 16 S-16 48 ppmv with calcite " <br /> 18 ,' <br /> 2Q <br /> S-21 16 47 Silt, moderate yellowish brown, slightly damp, - <br /> ppmv very stiff, with calcite veins and concretions <br /> (section continues downward) <br /> �„rtf` LOQ OF BOR1NGs B-10/MW-8 PLATE <br /> ' is�t�1�� Unocal Service Station No. 6981 13 <br /> 4707 Pacific Avenue <br /> PROJECT NO. 38032 80 2GBA Stockton, California <br />• <br />