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GS GeoStrategies, Inc. Log of Boring B-6 <br />• PROJECT BP Oil Station No 11191 LOCATION 1469 East Hammer Lane, Stockton, CA <br /> GSI PROJECT NO 4300 701 SURFACE ELEVATION <br /> DATE STARTED 2-2-95 WL (ft bgs) DATE TIME <br /> DATE FINISHED 2-2-95 WL (ft bgs) DATE TIME <br /> DRILLING METHOD 675"dia hollow-stem auger TOTAL DEPTH 51 Feet <br /> DRILLING COMPANY Geo-Environmental Drilling GEOLOGIST S Carter <br /> W <br /> M <br /> s r- o cn <br /> nLL W W L GEOLOGIC DESCRIPTION REMARKS <br /> x a _j _ x c) <br /> d" 0 3EC3 0 X Q J <br /> O w m tail tan t�7 in <br /> Pavement - 4" asphalt, 2" base rock <br /> CL CLAY (CL) - black (10 YR 2/1), damp, medium stiff to <br /> stiff, 75-80% clay,25-30% fine sand roots <br /> ML SANDY SILT (ML) - dark yellowish brown (10 YR <br /> 4/4), damp, very stiff to hard, 70-80% silt, 20-30% <br /> 5 20 fine sand, trace coarse sand, trace fine gravel <br /> 0 0/B' B8-8 <br />• <br /> 10 9 Color change to yellowish brown (10 YR 5/4), silt <br /> 0 43 BS-115 increases to 100%, sand decreased to 0%, trace <br /> oxide staining <br /> 15 0 0/5' B8-18 Becomes very hard <br /> 2019Minor calcification, trace fine gravel <br /> 0 0/5' B8-215 <br /> 25 0 0/0 , BO-28 Color change to brown (7 5 YR 4/4) <br /> 30 12 Becoming sandy, 75-80% silt, 20-25% fine sand, <br /> 0 32 86-315 rootholes, minor oxide staining <br />• 5M <br /> 35 <br /> JOB NUMBER 4300 701 Page 1 of 2 <br />