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SECOR <br /> In&=wnal tFeryarated <br /> Led By Dates Drilled Drilling Contractor Project Name MethodlEquipment Boring Number <br /> _ 7/11/01 WEST ARCO#4932 CONTINUOUS CORE <br /> M 7111101 HAZMAT STOCKTON,-CA - - HSA- - SB-2 <br /> See"Legend to Logs"for Boring Surface Groundwater Depth(ft) TotalEDnve Dmp <br /> samphng method, Diam(in) Elev(ft) 27 FIRST Depth(ft) (lbsDist(in) <br /> classifications and laboratory 8 NA 78gNA NA <br /> tt I methods <br /> Well Description <br /> Construction °' <br /> 284 <br /> 98 <br /> SANDY SILT(ML) dark yellowish brown(10YR3/4),fine-grained sand,low <br /> plasticity,very stiff,moist to wet,subangular blocky soil structure(0,35,65,0) <br /> 55 98 <br /> 18 <br /> CLAYEY SILT(ML) brown(10YR4/3),moderate plasticity,hard,dry(0,0,70,30) <br /> SANDY SILT(ML)-dark yellowish brown(10YR3/4),fine-grained sand,very stiff, 42 <br /> moist to wet,cemented in zones,subangular blocky soil structure(0,40,60,0) <br /> SILTY SAND(SND brown 10YR4/3 fine-grained sand dense wet 0 20 80 0 <br /> SANDY SILT(ML) brown(10YR4/3),fine-grained sand,dense,moist to wet in <br /> 65 zones allcemented in zones subangular block soil structure 0 30 70 0 13 <br /> SAND SP . dark h brown 10YR412 fine-grained,dense wet 0100 0 0 26 <br /> 5 <br /> SANDY SILT(NII.,),brown(10YR 4/3),fine grained sand,dense,moist to wet, <br /> partially cemented,(0,30,70,0) <br /> GROUT 70 12 <br /> Same as above <br /> IIH <br /> The substrata descriptions above are generalized representations and based upon visual/manual classification of cuttings and/or <br /> samples obtained during drilling Predominant material types shown on the log may contain different materials and the change from <br /> one predominant material type to another could be different than indicated Descnptions on this log apply only at the specific location <br /> at the time of drilling and may not be representative of subsurface conditions at other locations or times <br /> Project No 077.43286.330 Date 8/14101 PR Log of Bonng <br /> 4932SB2 GPJ Approved by <br /> LOG Of BOREHOLE <br /> Figure (sheet 3 of 4) <br /> r <br />