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Cambria Environmental Technology, Inc BORING/WELL LOG <br /> 1 144 - 65th 5t <br /> Oakland, CA 94608 <br /> Telephone (510) 420-0700 <br /> Fax (510) 420-9170 <br /> IO <br /> CLIENT NAME SP Oil Company_ _ BORINGIWELL NAME MW-4 <br /> JOB/SITE NAME BP-11191 DRILLING STARTED 12-Dec-01 <br /> LOCATION 1469 East Hammer Lane Stockton CA DRILLING COMPLETED 12-Dec-01 <br /> PROJECT NUMBER 852-1709 WELL DEVELOPMENT DATE(YIELD) NA <br /> DRILLER _ V&W Drilling _ „ GROUND SURFACE ELEVATION <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION NA <br /> BORING DIAMETER 8-inch SCREENED INTERVAL 45 to 60 ft b s <br /> LOGGED BY S Dwight DEPTH TO WATER(First Encountered) 45 0 ft(12-Dec-01) <br /> REVIEWED BY_ K Rahman, RG DEPTH TO WATER(Static) NA Z <br /> REMARKS Hand au ered to 5'b s <br /> � y <br /> Q Ua. � W 7 H y 2 Vr C 7 <br /> p X o ¢4 LITHOLpG1C DESCRIPTION z= WELL DIAGRAM <br /> a Q- m 0 ¢ W p F- <br /> H U u7 U W <br /> 0 <br /> ASPHALT <br /> 05 <br /> SILTY CLAY(CL),dark to brawn,dry damp,'45-/.clay, <br /> 40%silt,10%fine grained sand,5%fine gravel,tow to <br /> CL moderate plasticity,low estimated permeability <br /> 0 5 — — — 50 <br /> e CLAYEY SILT(ML), light brown,dry to damp,35%clay, <br /> 1B MW 4-6 50%silt,15%fine grained sand, low 10 moderate <br /> plasticity,low estimated permeability <br /> s 10 <br /> 0 , 010' light brown mottled with grey,damp,25%clay,250/6 <br /> 1O MW 4 fine grained sand,low plasticity <br /> 11 <br /> ML <br /> 23 15 <br /> 14 015' light brown dry,60%silt, 15%line grained sand <br /> 20 MW 4 <br /> 16 <br /> 10 20-- _ _ _ _ _ _ _ _ _ 200 <br /> 79 Ir MW-4 SANDY SILT(ML),light brown,dry,20%clay,50%silt, Portland Type <br /> c� 30%fine rained sand, low plasticity,low to moderate <br /> 205 g p �' I/11 Cement <br /> estimated permeability <br /> ML <br /> C3 <br /> I <br /> IL <br /> ED <br /> e 25 _ _ _ _ _ _ _ _ _ 250 <br /> t5 ,0 SILTY SAND(SM),brown,damp,20%slit,BO°i°fine <br /> m 15 MW 4 grained sand,no plasticity,high estimated permeability <br /> FD <br /> i <br /> N <br /> e in <br /> 30 SM <br /> so ,e @30' 15%silt,85%fine to medium grained sand <br /> = 21 MW-4 <br /> 31 <br /> nary <br /> O <br /> J <br /> J <br /> 35 - - --- - - ---- - - - - - - - - - 350 <br /> Continued Next Page PAGE 7-37p p <br />