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a <br /> Total depth of borings 72-1/2 feetDlazmeter of boring, 12 inch Date drllfed. 8/10-11/92 <br /> . Casing diameter, 6 inch Lealpth, 52-1/2 feet Slot size, 0 010 <br /> a Soreen diameter, 6 inch Lengthy 20 feet Materkal types PVC <br /> Drilling Company: WES7EX Drillers Tony Joramillo <br /> Method Usede Hollow—stem auger, California modified split—spoon FI Gsologlat, Tom Lutterman <br /> Signature of Registered ProfearAonaali <br /> Registration Nos 4313 to, California <br /> WASLIFIED SAMPLE o WELL <br /> P.I.D. USCS DESCRIPTION <br /> DEPTH NO. m CODE CONST. <br /> a <br /> D <br /> Asphalt and gravel fill <br /> 2 CL Clay grayish Black, dry mediun plasticity <br /> 4 <br /> S-5 21 ppmv ASL slit, moderate yellowish brown, dry, non—plastic, very stiff <br /> 6 <br /> i <br /> 8 <br /> 10 S-10 35 ppmv Some calcite present, hard . <br /> 12 <br /> 14 <br /> S-15 72 0 <br /> ppmv <br /> i <br /> 16 <br /> 18 <br /> i <br /> lsA /An LOG OF BORING: B-18/PTW-1 PLATE <br /> i!!/IV!U Unocal Service Station No. 5981 <br /> 80 <br /> 4707 Pacific Avenue <br /> PROJECT NO. 38032 3 NO2H2A Stockton, California <br />