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Cambria Environmental Technology, Inc BORING/WELL LOG <br /> 270 Perkins Street <br /> Sonoma, California 95476 <br /> Telephone (707) 935-4850 <br /> Fax (707) 935-6649 <br /> CLIENT NAME. Shell Oil Products US BORINGIWELL NAME MW-18 <br /> . JOBISITE NAME Former Texaco Station/United Gas Station DRILLING STARTED _ 22-Aug-02 _ <br /> LOCATION 440 W Charter Way,Stockton DRILLING COMPLETED 23-Aug-02 <br /> PROJECT NUMBER 1399 WELL DEVELOPMENT DATE(YIELD) NA <br /> DRILLER Boart Lonqyear GROUND SURFACE ELEVATION 9 91 ft above msl <br /> DRILLING METHOD Rotosonic Vibration TOP OF CASING ELEVATION 9 41 ft above msl <br /> BORING DIAMETER 6" SCREENED INTERVAL 70 to 80 fbq <br /> LOGGED BY A Cool DEPTH TO WATER(First Encountered) 28 0 ft(22-Au_q-02) <br /> REVIEWED BY_ J Neely,RG 6927 DEPTH TO WATER(Static) NA 1 <br /> REMARKS <br /> CL � w z z <br /> a O Z Q h a- a.p LITHOLOGIC DESCRIPTION r WELL DIAGRAM <br /> a 0°c0� ¢ W Oumi <br /> uj U <br /> Concrete 0 3 <br /> Clavev SILT(ML),dark yellowish brown(10YR 4/4), <br /> moist,15%clay,75%silt, 10%fine sand,low to medium <br /> plasticity <br /> 00 5- <br /> 00 <br /> 00 10 @ 10'-brown(10YR 4/3) <br /> ML @ 12'-SILT(ML),brown(10YR 5/3), 10%clay,85% <br /> silt 5%fine sand,low plasticity <br /> 00 @ 14'-Sandy SILT(ML),yellowish brown(10YR 5/4), <br /> 15 5%clay,70%silt,25%fine sand no plasticity <br /> @ 17'-yellowish brown(10YR 5/6),5%clay,80%silt <br /> 15%fine sand <br /> 00 20 @ 20'-Clayey SILT(MU,dark yellowish brown(10YR <br /> 4/4), 15%clay,75%silt, 10%fine sand,low to medium <br /> plasticity <br /> Hil 240 <br /> SM Silty SAND(SM),dark grayish brown(2 5Y 4/2),moist, 250 <br /> LL 00 25 5%clay,35%silt 60%fine sand <br /> O Sandy SILT(M!=),dark grayish brown(2 5Y 4/2), <br /> a moist,5%clay,75%silt,20%fine sand,no plasticity <br /> c� <br /> M Q <br /> Q 28'-SILT ML dark gray(5Y 4/1),moist to wet, <br /> 5°/v clay,85%silt,10%fine sand <br /> 0 0 30 @ 30'-moist 10%clay,85%silt,5%fine sand,low Portland Type <br /> plasticity 1111 Cement <br /> a <br /> O <br /> O <br /> J <br /> J <br /> � 35 <br /> Continued Next Page PAGE i OF 4 <br />