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BORING NO. <br /> ALTON GEOSCIENCE, Inc. PROJECT NO. 30-136-01 DATE DRILLED 4-30-91 <br /> LOG OF EXPLORATORY B-4 <br /> - <br /> BORING CLIENT Mobil oil Co ration <br /> LOCATION 500 E.Grantline Road Ca. WELL NO.... LOGGED BY C. Ladd APPROVED BY AW-5 <br /> FIELD SKETCH OF BORING LOCATION Pagel of 1 <br /> DRILLING METHOD CME 75 MSA HOLE DIAM. 8" <br /> See attached. <br /> SAMPLER TYPE_ Modified split spoon ._ .- -- <br /> CASING DATA_2-Sch.40 PVC, 0.010"slot,5'solid,20'pert. <br /> TOP OF CASING ELEVATION 30.61' DRILLER West Hazmat Drilling Corporation <br /> WATER LEVEL -9.00, 10.21' <br /> W w DATE 4-30-91 5-7-91 <br /> 2e � gw <br /> iE <br /> O " TIME 11:50 12:50 <br /> M cCdEE DESCRIPTION <br /> t <br /> Christy <br /> 0 Box <br /> Planter <br /> 2 2" CL SILTY CLAY:dart(brown, moist,firm, medium plasticity. <br /> 4 Sch. 40 <br /> PVC - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - <br /> 4,2,4 6 .010' ' <br /> slot SILTY SAND:brown, moist, loose, low plasticity. <br /> � 8 <br /> 10 a: SM <br /> i 5,6,8 <br /> 12 Same,becomes medium dense,medium plasticity,with some day. <br /> : : <br /> 14 <br /> 2„ <br /> i <br /> 5,7,9 16 PVCCL SILTY CLAY:dark brown, moist, stiff, high plasticity. <br /> .010" ; <br /> 18 slot - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - <br /> 20 <br /> 7,13, SILTY SAND:brown,wet,dense,medium plasticity. <br /> , <br /> 19 22 <br /> SM <br /> Cap <br /> 24 EndSame,with some gravels to- 1140. <br /> OR 1,5,11 26 -CL SILTY CLAY:brown,wet, stiff, medium plasticity.- - - - - - - - - - - - - - - - - - <br /> 28 BORING TERMNATED AT 26.5 FEET BELOW GRADE <br /> 30 Portland Cement <br /> � Sample Stabilized water level <br /> 32 Sand#2 Lonestar <br /> Driven interval Q Wader level encountered during drilling <br /> . •tti; Bentonite Pellets <br />