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GeoStrategies, Inc. Log of Boring U—K <br /> PROJECT FORMER UNOCAL STATION Af0187 LOCATION 437 E Miner Avenue, Stock fon, CA <br /> GSI PROJECT NO 4827703 CASING ELEVATION <br /> DATE STARTED 7/6/94 WL (ft bgs) DATE TIME <br /> DATE FINISHED, 7/6/94 WL (ft bgs) DATE TIME <br /> DRILLING METHOD 8 in Hollow Stem Auger TOTAL DEPTH 465 Feet <br /> DRILLING COMPANY West Hazmat GEOLOGIST Steve Carter <br /> LU <br /> m <br /> * r- oZ in <br /> cn <br /> a ILLw v J GEOLOGIC DESCRIPTION REMARKS <br /> 3: 4 0. d <br /> J <br /> ` q of a a cc o <br /> W <br /> a m cn cn 0 rn <br /> CL <br /> Backfilled to ground <br /> surface with neat cement <br /> 5 32 30 UK-60 CLAY (CL) - very dark gray (IOYR 3/1), very stiff, <br /> damp, medium plasticity 100% clay <br /> 5C <br /> 10 11 24 UK-ii 5 / CLAYEY SAND (SC) - yellowish brown (10YR 5/6), <br /> / medium dense, damp, 65-70X fine to medium sand, <br /> � , CL 30-35X clay <br /> 15 13 42 UK-16 5 CLAY (CL) - yellowish brown (SOYR 5/6), hard, moist, <br /> low to medium plasticity, 65-70% clay, 30-35% fine <br /> 5C sand. <br /> 20 27 26 UK-215 / CLAYEY SAND (SC) - very dark grayish brown <br /> • / (lOYR 3/2), medium dense, moist, 55-60% fine to <br /> �,� CL medium sand, 40-45X Gay <br /> 25 26 22 UK-26 5 '' SANDY CLAY (CL) - very dark grayish brown (IOYR <br /> 5/2), very stiff, moist, low plasticity, 55-60% clay, <br /> 40-45% tine sand <br /> 30 59 28 UK-315 CLAY (CL) - dark gray (SY 4/1), very stiff, moist, <br /> medium plasticity, 100% clay, product odor <br /> 35 7 55 UK-38 5 product odor <br /> SC <br /> oz <br /> 40 CLAYEY CLAY (SC) - dark grayish brown (2 5Y <br /> 88 49 UK-415 / 4/2), dense to very dense, moist, 65-70% fine to <br /> f medium sand, 30-35X clay, product odor <br /> 45 � <br /> 28 44 UK-46 5 l no product odor <br /> i <br /> 50 (a - converted to equivalent standard penetration <br /> blows/ft) <br /> 55 <br /> 60 <br /> • <br /> 65- <br /> U70 <br /> JOB NUMBER 4827 703 Page 1 of 1 <br />