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MEASURED SAMPLE c I.D. USCS DESCRIPTION WELL <br /> DEPTH NO. m CODE CONST. <br /> i 20 <br /> S-20 15 ppmv <br /> MI_ Silt stiff <br /> 22 <br /> 24 <br /> 5-25 37 0 Silt, trace cloy and fine sand light olive gray mottled with <br /> 26 ppmv medium bluish gray moist slight plasticity hard with calcite <br /> veins <br /> 28 <br /> 30 Silt, light olive gray, mottled with dark reddish brown moist, <br /> S-30 35 11 9 ML non—plastic, hard <br /> ppmv SM Sand fine—grained, trace silt dark yellowish brown moist, <br /> 32 non—plastic dense <br /> Boring terminated at 32 feet <br /> Boring converted to vapor extraction well <br /> 34 Groundwater not encountered <br /> 36 <br /> 3s - <br /> - 40 - <br /> - 42 - <br /> - 44 - <br /> - <br /> 42 <br /> 44 <br /> 46 <br /> 48 <br /> LOG OF BORING: B-21/VW-6 PLATE <br /> Unocal Service Station No. 6981 <br /> 4707 Pacific Avenue 7 <br /> PROJECT NO. 38032 8oL2N2f3 Stockton, California <br />