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GSI GeoStrategies Log of Boring U-5 <br /> PROJECT Unocal Station No 0187 LOCATION 437E Miner Avenue, Stockton, CA <br /> GSI PROJECT NO 482704 CASING ELEVATION 1258 feet above MSL <br /> DATE STARTED 7/19/95 WL (ft bgs) 435 DATE 7/19/95 TIME <br /> DATE FINISHED 7/19/95 WL (ft bgs) 4289 DATE 7/31/95 TIME 830 am <br /> DRILLING METHOD 8 in hollow-stem auger TOTAL DEPTH 55 Feet <br /> DRILLING COMPANY Mitchell Drilling Environmental GEOLOGIST Steve Carter <br /> LLW <br /> m <br /> ez .~Z., o WELL DIAGRAM <br /> z n w L s U GEOLOGIC DESCRIPTION <br /> a v UJIca O Q <br /> O a m ffa (a (D Cr O <br /> f/) <br /> CL <br /> O� <br /> U y <br /> CLAY (CL) - very dark gray (10YR 3/1), very stiff, <br /> 5 3 18 US-5 damp, 100% clay, trace fine to medium sand <br /> color change to brown (1OYR 5/3) <br /> 10- 4 18 U5-10 <br /> • <br /> color change to dark brown (7 5 YR 3/4) at 13 5 <br /> 15 <br /> 0 30 U5-15 feet, damp to moist, sand increases to 10-15% U <br /> 4 � <br /> b � <br /> V � <br /> R1 U <br /> bCU <br /> CU c <br /> SILTY CLAY (CL) - dark brown (7 SYR 3/4), very u) <br /> stiff, moist, 85-80% silty clay, 10-15% fine sand <br /> 20 0 28 U5-20 <br /> ti <br /> SC <br /> CLAYEY SAND (SC) - olive brown (2 5Y 4/4), <br /> medium dense, moist, 80-70% fine sand, 30-40% <br /> 25 2 27 U5-25 clay, trace peat <br /> SP <br /> SAND (SP)- light brownish (2 5Y 6/2), dense, moist, <br /> 1 <br /> 30 0 32 U5-30 00% fine sand <br /> Li Ll <br /> CL - <br /> 1, ami c <br /> A� <br /> SANDY CLAY (CL) - olive brown (2 SY 4/4), very <br /> stiff, moist, 60-70% clay, 30-40% fine sand, <br /> 35 0 21 U5-35 calcification <br /> JOB NUMBER 482704 Page 1 of 2 <br />