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23765 <br /> rn <br /> c <br /> m <br /> Equipment 8-1/2"Auger/10"Auger <br /> TOP OF PVC CASING m cc t ' <br /> Elevation 3 Q E m A <br /> In O� a U) Elevation Date 8-8-91 <br /> GR SURFACE 0- <br /> -TOP OF CASING at 4.5' ASPHALT <br /> below ground surface — DARK GRAYISH BROWN SILTY SAND(SM) <br /> 1 OYR 4/2 loose,dry,60%wry fine-grained Send, <br /> 10'DIA.BOREHOLE 40%silt <br /> 0-33.0 N <br /> 4"DIA.SCHED.40 PVC <br /> BLANK CASINGU r <br /> 4.5-to 7.0 It 6 0 5 <br /> "ACK CEMENT-SAND 4 <br /> SEAL 1.0to3.0 ft 4 , PA T� <br /> BENTONITE PELLET SEAL = DARK OLIVE-GRAY SILTY SAND(SM)SY 312 <br /> 3.0 to 5.0 H = loose,dry,80%very fine-grained sand,20%silt <br /> #3 6x20 SANDPACK 4 3 10 <br /> 5.0 to 32.5 ft = 6 <br /> BLACK CLAY(CL)SY 25/1 medium stiff,dry <br /> 6 <br /> 4"DIA.SLOTTED SCREEN <br /> ((0.020-slot sae) <br /> 7.0to32.0It <br /> 0c, Wr-�'r- <br /> 4 0 15 wet to moist <br /> 6 <br /> 11 <br /> 10 0 20 <br /> 15 very stiff,wet, 10%Silt <br /> 22 <br /> 7 0 25 BLACK SILTY SAND(SM)5Y 25/1 medum dense, <br /> 11 saturated,90%fine-grained sand, 10%silt <br /> 14 <br /> 4'DIA.SCHED.40 PVC = 20 DARK GRAY CLAYEY SILT(ML)SY 4/1 <br /> BLANKSILTTRAP = 4 very stiff,dry,30-40%clay <br /> 32.0 to 32.5.0 It 15 0 <br /> BOTTOM WELL CAP, 22 Bottom of boring at 33A ft <br /> HOLE CLEANED OUT <br /> to 32.5 It <br /> 35 - <br /> 40 os,9LZ <br /> PLATE <br /> Harding Lawson Aaaociatem Log of Boring and Well Completion MW-23 <br /> Engineering andShell Oil - <br /> Environmental Services <br /> Stockton, California <br /> DRAWN JOB NUMBER APPRgVED DATE REVISED DATE <br /> LZc 4022 201 02 D IAAtiA 8/91 <br />