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Cambria Environmental Technology, Inc BORING/WELL LOG <br /> 1144 - 65th 5t <br /> Oakland, CA 94608 <br /> Telephone (510) 420-0700 <br /> Fax (510) 420-9170 <br /> �LIENT NAME BP Oil Company BORINGIWELL NAME CB-2 <br /> JOB/SITE NAME BP-11193 DRILLING STARTED 07-Oct-99 <br /> LOCATION _3202 West Hammer Lane, Stockton, California DRILLING COMPLETED 07-Qct-99 <br /> PROJECT NUMBER 852-1530 WELL DEVELOPMENT DATE(YIELD) NA <br /> DRILLER Precision Sampling C-57 636387 GROUND SURFACE ELEVATION NA <br /> DRILLING METHOD CPT TOP OF CASING ELEVATION NA <br /> BORING DIAMETER 1 75" SCREENED INTERVAL NA <br /> LOGGED BY _J Riggi DEPTH TO WATER(First Encountered) 13 5 ft(07-Oct-99) <br /> REVIEWED BY_ K Rahman. RG DEPTH TO WATER(Static) 13 5 ft 07-Oct-99 1 <br /> REMARKS Hand auu eyed to 5'bqs,baring is located 30'due South of UST pit,CB 2E is located at 3'W of CB-2 _ <br /> ao p ao <br /> 'i3 i-- w Z Zry Q� <br /> E O Z d W w a O LITHOLOGIC DESCRIPTION z z WELL DIAGRAM <br /> 0 ma ¢ w Drr 00. <br /> 0 0W <br /> 05 <br /> E&L,brown,dry,20%silt,80%sand,no plasticity,very <br /> high estimated permeability,fill _ _ _ 2 0 <br /> L) <br /> Sandy Silty CLAY, (C ,black,damp,45%_clay,30_% <br /> silt,25%sand,medium plasticity,very low estimated <br /> CL permeability <br /> 50 <br /> CB-2 @ 5 SAND,(SP),brown,damp, 10%silt,90%fine to <br /> 5' medium grained sand,no plasticity,very high estimated <br /> permeability <br /> SP <br /> _ _ _ _ _ _ _ _ _ _ _ _ _ _ 100 <br /> CB-2 @ 10 Silty SAND,(SM),brown,damp,20%silt,80%fine to <br /> 10' medium grained sand, no plasticity,very high estimated <br /> permeability,pyrite flecks <br /> <0 05 CB-2 0 1 <br /> 13' <br /> 15 Portland Type <br /> Illi <br /> CB-2 @ = Hydropunch groundwater sample collected from 16-17 ft <br /> 16-17' — bgs <br /> 20 SM <br /> r <br /> 0 <br /> c� <br /> - CB-2 f83 <br /> LU 21 5' <br /> 0 <br /> c� <br /> C132 @ 25 <br /> iL <br /> B <br /> 25' <br /> c� <br /> CB 2 <br /> CB 2 = Hydropunch groundwater sample collected from 29-30 ft 300 <br /> N 29-30' 30 bgs— — — -- — --- — — -_-- — — — — i Bottom of <br /> Boring @ 30 It <br /> 0 <br /> J <br /> J <br /> J <br /> �y <br /> T <br /> PAGE f OF 1 <br />