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GSI GeoStrateg(es, Inc. Log of Boring U—J <br /> PROJECT FORMER UNOCAL STATION 00187 LOCATION 437 E Miner Avenue, Stockton, CA <br /> GSI PROJECT NO 4827703 CASING ELEVATION <br /> DATE STARTED 7/8/94 WL (ft bgs) DATE TIME <br /> DATE FINISHED 7/8/94 WL (ft bgs) DATE TIME <br /> DRILLING METHOD 8 in Hollow Stem Auger TOTAL DEPTH 415 Feet <br /> DRILLING COMPANY West Hazmat GEOLOGIST Steve Carter <br /> LLw <br /> M <br /> a >- o N <br /> n GEOLOGIC DESCRIPTION REMARKS <br /> x rn x U <br /> �. x a '1 <br /> v o 0 <br /> CL <br /> SaCkfiped to ground <br /> surface with neat cement <br /> 5 4 7 UJ-85 CLAY (CL) - brown (IOYR 5/3), stiff, damp, low to <br /> medium plasticity, 85-90% clay, 10-15% fine to <br /> medium sand, <br /> la 2 14 1.1J-11 5 moist, medium plasticity, clay Increasing to 90-95% <br /> i5 0 22 UJ-18 S clay Increasing to 95-100% <br /> Sc <br /> 20 CLAYEY SAND (SC) - dark brown (7 SYR 3/4), <br /> 0 22 UJ-215CL medium dense, moist, 75-80% tine to medium sand, <br /> 20-25% clay <br /> 25 18 34 UJ-26 0 CLAY (CL) - greenish gray (5GY 6/1), hard, moist, <br /> UJ-26 5 medium plasticity, 100% clay <br /> 3a color change to olive gray (5Y 5/2), sand Increases <br /> 0 41 UJ-31 5to 10-15% fine sand, lightly mottled, dark yellowish <br /> SP-SC brown (IOYR 3/4) <br /> I CL SAND WITH CLAY (SP-SC) - dark grayish brown <br /> 35 4 52 UJ-38 0 (2 5Y 4/2), dense, moist 00% fine sand 10% clay <br /> UJ-38 5 SANDY CLAY (CL) - olive gray (5Y 4/2), hard, <br /> 5C moist, low to medium plasticity, 75-80% clay, 20-25X <br /> 40 fine sand <br /> 80 43 UJ-415 <br /> SANDY CLAY (SC) - dense, moist, 75-80% fine to <br /> medium sand 20-25% clay <br /> 45— <br /> (x - converted to equivalent standard penetration <br /> blows/ft) <br /> 50- <br /> 55- <br /> 60- <br /> 170 <br /> 05560l0 <br /> JOB NUMBER 4827 703 Page I of <br />