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GSI GeoStrategies Log of Boring U-8 <br /> PROJECT Unocal Station Ato 0187 LOCATION 437 E Miner Avenue, Stockton, CA <br /> GSI PROJECT NO 482704 CASING ELEVATION 1153 feet above MSL <br /> DATE STARTED 7/28/95 WL (ft bgs) 535 DATE 7/28/95 TIME 306pm <br /> DATE FINISHED 7/28/95 WL (ft bgs) 4295 DATE 7/31/95 TIME 830 am <br /> DRILLING METHOD Bin hollow-stem auger TOTAL DEPTH 55 Feet <br /> DRILLING COMPANY Mitchell Drilling Environmental GEOLOGIST Steve Carter <br /> W <br /> M <br /> r- zz o W WELL DIAGRAM <br /> _ w w M GEQLOGIC DESCRIPTION <br /> f'r.. X a a d J <br /> O"�"' d m in [!I CD I V7 <br /> Pavement section - 4" concrete, 4-6" sand 7 ,A w <br /> CL o <br /> CLAY (CL) - very dark brown (10YR 2/1), very stiff, <br /> 5 20 21 Ue-e <br /> damp to moist, 100%clay <br /> color change to dark grayish brown (10YR 4/2), <br /> 10 16 16 US-id moist, 75-80% clay, 15-20% fine sand <br /> color change to yellowish brown (IOYR 5/6), sand <br /> 15 <br /> 10 28 U8-I5 decreases to 5-10% U <br /> 0. <br /> O 4, <br /> ' SC <br /> i ao- u <br /> b ip <br /> v m <br /> V � <br /> CLAYEY SAID (SC) - dark brown (10YR 4/4), <br /> 0. medium dense, moist, 75-80% fine sand, 20-25% ro <br /> z� 10 28 U8-20 clay a <br /> N <br /> CL <br /> CLAY (CL) - olive gray (5Y 5/2), hard, damp to <br /> 25 11 30 U8-25 moist, 100% clay <br /> 30 8 38 U8-30 color change to olive brown (2 5Y 4/4) <br /> iw <br /> A� <br /> color change to yellowish brown 00YR 5/4), trace s „� <br /> 35 5 37 U8-35 calcification at 34 feet A '� <br /> JOB NUMBER 482704 Page 1 of 2 <br />