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4/ <br /> HUMM SAMPLE c P.I.D. USCS DESCRIPTION WELL <br /> DEPTH Na. CODE CONST. <br /> _ 20 — S-20 4 ppmv ML Silt some clay, olive black, dry, non—plastic, soft .•• <br /> zz <br /> 24 <br /> 5-25 10 3 gW Sand some gravel, fine— to coarse—grained sand, coarse gravel, <br /> 26 ppmv greenish black loose <br /> — 28— <br /> _ 30 — <br /> S-30 S-30 12 ppmv ML Clayey silt, grayish green, dry, low plasticity, stiff <br /> 32 <br /> 34 <br /> S-35 11 ppmv Greenish black <br /> 36 <br /> � 38 <br /> 40 S-40 28 ppmv Silt trace clay, non—plastic, very stiff <br /> 42 <br /> 44 <br /> S-45 28 ppmv Clayey silt, low plasticity <br /> 46 <br /> 45 — <br /> V <br /> LOO OF BORING B-13/RW-1 <br /> Fire Engine Company No. 2 <br /> 110 West Sonora Street 14 <br /> PROJECT NO. 360139 8FILE�009E10B I Stockton, California <br />