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Conestoga-Rovers&Associates BORINGMELL LOG <br /> 19449 Riverside Drive, Suite 230 <br /> Sonoma, CA 95476 <br /> Telephone: 707-935-4850 <br /> Fax: 707-935-6649 <br /> CLIENT NAME Shell Oil Products US BORING/WELL NAME MW-13 - <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House,NBH C&D DRILLING STARTED 20-Jan-09 <br /> LOCATION Tracy,CA DRILLING COMPLETED 20-Apr-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 21-Sep-09(20.0 gallons) <br /> DRILLER Gregg Drilling,C-57#485165 GROUND SURFACE ELEVATION 91.58 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 94.86 ft above msl <br /> BORING DIAMETER 8 SCREENED INTERVAL 20 to 35 fbq <br /> LOGGED BY S.Phillips DEPTH TO WATER(First Encountered) 25.0 ft(20-Apr-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 24.84 ft(30-Sep-09) 1 <br /> REMARKS Air knifed to 5 fbq. Above ground construction consisting of a 2 ft.Stovepipe. <br /> E U) H C6U ~ � <br /> o O a- X a O SOIL DESCRIPTION Z= WELL DIAGRAM <br /> a mU < W C7 OUQ <br /> SILT(ML);very dark gray(10YR 3/1);dry;35%clay, <br /> 55%silt, 10%fine to coarse sand;medium plasticity. <br /> ML <br /> 5.0 <br /> 10 13 MW-13-5 5 SILT(ML);brown(10YR 4/3);dry;20%clay,50%silt, <br /> 76 30%fine to coarse sand. <br /> ML <br /> Portland Type 1/II <br /> 10.0 <br /> 26 MW-1a 10 10 SILT(ML);brown(10YR 4/3);dry;20%clay,50%silt, <br /> 30 30%fine to coarse sand. <br /> ML <br /> rn <br /> 15.0 <br /> _ 17 Mw-13-15 15— SILT(ML);brown(10YR 4/3);dry;20%clay,45%silt, <br /> 0 <br /> 16 35%fine to coarse sand. <br /> 0 <br /> Bentonite Seal: <br /> ML <br /> LL <br /> _ W <br /> 20.0 <br /> 4 MW-13-20 20 SAND(SW);brown(10YR 5/3);wet; 100%fine to <br /> 76 coarse sand. <br /> N <br /> N <br /> O <br /> to SW <br /> O <br /> W s <br /> 25- 25.0 <br /> 67 MW-13-25 SAND'(SW);brown(10YR 5/3);wet; 100%fine to <br /> s coarse sand. <br /> N Monterey Sand <br /> o #2/12 <br /> SW 2"-diam.,0.010" <br /> N Slotted Schedule <br /> 40 PVC <br /> ID0 <br /> MW-13-30 <br /> 30 <br /> x <br /> � 31.5 <br /> Silty SAND(SM);dark yellowish brown(10YR 4/4); <br /> uj <br /> moist;40%silt,60%fine to coarse sand. <br /> SM <br /> ZMw-13- 35 35.0 <br /> p 34.5 <br /> Bottom of <br /> a Boring @ 35 ft <br /> c0 <br /> 0 <br /> J <br /> J <br /> J <br /> 40 <br /> PAGE i OF 1 <br />