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32148 <br /> 2E _ <br /> L a _ <br /> TOP OF PVC CASING 0 <br /> 0 Elevation c' t CL Equipment 12"and 10" Hollow Stem Augers <br /> 3 a <br /> m <br /> GROUNDS FACE QD° pQ Elevation Date 9-7-93 <br /> 6 40 <br /> 10 40 to 41 IT: silt increasing to 40% <br /> 15 <br /> LONESTAR x2/12 SANDPACK 16 o <br /> 42.5 to 57.0 ft 6 <br /> 4'DIA.SLOTTED SCREEN 14 0 <br /> (0.020'slot size)44.0 to 54.0 It = t0 <br /> 12 45 VERY DARK GRAY SILTY SAND(SM)SY 311 <br /> 4 loose,saturated,85%fine-to medium-grained <br /> 7 o sand,15%sift <br /> 1s DARK GREENISH GRAY SILTY CLAY(CL)SG 4/1 <br /> 6 0stili,moist,send stringers common <br /> B <br /> 6 0 <br /> 12 <br /> 650 <br /> 4 <br /> 7 VERY DARK GRAY CLAYEY SAND(SC)5Y 3/1 <br /> 0 <br /> 4'DIA.SCHED.40 PVC = 9 medium dense,saturated,60%very fine-grained <br /> BLANKSILTTRAP — 3 o sand,20%clay,20%silt <br /> 54.0 to 54.5 it _ 12 VERY DARK GRAY SAND(SP)5Y 3/1 <br /> loose,saturated,95%fine-to very fine-grained sand, <br /> BOTTOM WELL CAP — j 0 5 %silt <br /> 54.5 ft 12 VERY DARK GRAY CLAYEY SAND(SC)SY 3/1 <br /> 15 55 medium dense,saturated,60%very fine-grained <br /> 7 0 sand,20%clay,20%silt <br /> 12 DARK GREENISH GRAY CLAY(CL)58G 4/1 <br /> BENTONITE SEAL 5 very hard,moist,5%silt,sand lense <br /> 57.0 to 62.5 IT ie DARK GREENISH GRAY CLAY(CL)5G 4/1 <br /> 7 0 hard,moist,5-10%silt,trace of organics,some <br /> 15 rusty staining,crumbly <br /> aAp 21 <br /> V,V�VQ <br /> 6 0 60 <br /> HOLE CLEANED OUT e <br /> to 62.5 If 10 <br /> 14 o at 62 IT silt increasing to 3m <br /> 6VERY DARK GRAY SAND(SP)2.SY 3/0 <br /> 12 D loose,saturated,fine-grained <br /> 1s <br /> VERY DARK GRAY SILTY SAND(SM)2.5Y 310 <br /> 12 65 loose,saturated,70%fine-to very fine-grained <br /> 22 0 sand,30%silt <br /> 29 <br /> Bottom of borehole at 67.0 It <br /> 70 - <br /> 75 - <br /> 80 <br /> 07580 J loossaLFD <br /> Herding Lawson Assodatw Log of Boring and Well COrnpletion DW-1 PLATE <br /> Engineenng and Results of Plume Characterization Investigation <br /> C Environmental Services Shell Oil Distribution Plant <br /> Stockton, California <br /> DRAWN JOB NUMBER APPROVED DATE REVISED DATE <br /> LZc 10433005 6 10/93 <br />