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SAMPLE USCS WELL <br /> DESCRIPTION <br /> DEPTH NO m P.I D. CODE CONST <br /> 20 - <br /> S-20 41 pp0 v ML Silt some clay moderate brown slightly damp <br /> slight plasticity hard <br /> 22 <br /> 24 <br /> 26 5-26 64 pp0 v Slit <br /> 28 - <br /> 30- <br /> S-31 <br /> 8305-31 53 3 Silt trace clay <br /> ppmv <br /> 32 <br /> 34 <br /> 36 5-36 45 ppb <br /> my <br /> 38 <br /> 40 - <br /> S-41 42 p4 <br /> 9v Light brown <br /> 42 <br /> 44 <br /> 46 5-46 88 ppmv Silt trace fine—grained sand moderate brown <br /> 48 <br /> 50 <br /> 5-51 >50 246 <br /> ppmv <br /> (section continues downward) <br /> LOG OF BORING: B7/VW-4 PLATE <br /> t—jAWArVAV s ARCO Service Station No. 2130 <br /> 7906 North El Dorado Street C21 <br /> FILE NO Stockton, California <br /> PROJECT NO. 30003-4 0003D68 <br />