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TE 0C _ Jz0 2— a TOP OF PVC CASING 0 cr �- Equipment 10"Hollow Stem Auger Elevation 3 Q n E Elevation Date 8-27-93 GROUND SURFACE Olt 0 TOP OF CASING ..... BROWN SILTY SAND(SM) 10YR 4/3 at ground surface loose,dry,75%fine-grained sand,20%silt, 5%rounded gravel 10'DIA.BOREHOLE becomes moist at 1.5 it 0.030.0 If 4'DIA.SCHED.40 PVC 0.0 to 5.0 ftSING — 5 VERY DARK BROWN TO BLACK CLAY(CL) 10YR 2/2 to 10YR 2/1 stiff,mast,5%micaceous silt, BENTONITE-CEMENT SEAL =_ 2 0 laminations,rusty staining 0.0 to 2.5 ft — 3 — 5 BENTONITE PELLET SEAL = 2.5 to 4.0 It = LONE12/12 SANDPACK VERY DARK GRAYISH BROWN CLAY(CL)10YR 32 4.0 0 30.0 30.0 h 1 hard,moist,crumbly,20-25%micaceous silt 4'DIA.SLOTTED SCREEN 3 0 (0.020'slot size)5.0 to 29.5 ft 4 — D VERY DARK GRAY CLAYEY SAND(SC)5Y 3/1 15 moderately hard,saturated,60%very fine-grained a o send,20%day,20%silt,some dessication cracks 9 DARK GREENISH GRAY CLAYEY SILT(ML)5G 4/1 = hard,moist,20%clay,micaceous _ 3 0 20 _ 6 7 — DARK BLUE GRAY SILTY SAND(SM)56 411 moderately hard,saturated,breaks easily,80%very fine-grained sand, 15%silt,5%clay,micaceous 1 0 25 4 BOTTOM WELL CAP = 29.5 k —_ HOLE CLEANED OUT = DARK GREENISH GRAY SANDY SILT(ML)5G 4/1 to 30.0 k moderately hard,moist,crumbly,25%clay,5%very 4 30 fine-grained sand 137 VERY DARK GRAY SAND(SP) 5Y 3/1 BENTONITE PELLET 7 loose,saturated,medium-grained BACKFILL 30.0 to 36.0 ft 132 VERY DARK GRAY SILT(ML)5Y 3/1 6 moderately hard, 15%clay,5%very fine-grained sand 12 VERY DARK GRAY SAND(SP) 5Y 3/1 14 loose,saturated,medium-grained 17 35 grsdationalcontact 16 VERY DARK GREENISH GRAY CLAYEY SILT(ML) 5GB 4/1 very stiff,moist,50%clay Bottom of boring at 36.0 k 40 1IXIBa9LF0 Hwcflng Lawson Associate - Log of Boring and Well Completion MW-26 PLATE Engineering and Results of Plume Characterization Investigation Environmental Services Shell Oil Distribution Plant 9 j 5 Stockton, Califomia DRAWN JOB NUMBER APPROVED DATE REVISED DATE LZc 10433005 6L- l 10193