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Conestoga-Rovers&Associates BORING/WELL 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-15 - <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House,NBH C&D DRILLING STARTED 03-Feb-09 <br /> LOCATION Tracy,CA DRILLING COMPLETED 04-Feb-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 25-Sep-09(8.5 gallons) <br /> DRILLER Gregg Drilling,C-57#485165 GROUND SURFACE ELEVATION 96.73 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 99.56 ft above msl <br /> BORING DIAMETER 10" SCREENED INTERVAL 20 to 34.9 fbq <br /> LOGGED BY S.Phillips DEPTH TO WATER(First Encountered) 30.0 ft(04-Feb-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 31.29 ft(30-Sep-09) 1 <br /> REMARKS Air knifed to 5 fbq <br /> to l— U ~ <br /> 8 O n_W Q p SOIL DESCRIPTION = WELL DIAGRAM <br /> a m 00 Q W :j WO w <br /> rn U D <br /> SILT(ML);dark grayish brown(10YR 4/2);moist;25% <br /> clay,70%silt,5%fine to coarse sand;low to medium <br /> plasticity. <br /> 12 <br /> zz Mw-15-5 5 @ 5'-yellowish brown(1 OYR 5/6);dry;25%clay,75% <br /> silt,5%fine sand. <br /> Portland Type 1/II <br /> 15 MW 15-10 10 ML @ 10"-yellowish brown(1 OYR 5/4);medium plasticity. <br /> 14 <br /> 0 <br /> ze MW-15-15 15 @ 15'-30%clay,60%silt, 10%fine sand. <br /> 0 <br /> Bentonite Seal <br /> Monterey Sand <br /> 20.0 #2/12a 5 Mw- 1520 20 Silty SAND(SM);dark yellowish brown(10YR 4/4);dry; <br /> 0 5%clay,20%silt,75%fine to coarse sand. <br /> a <br /> O <br /> i <br /> N13 <br /> 0 <br /> 2U MW-15-25 25 <br /> i' <br /> ID <br /> 0 <br /> Lu SM 2"-diam.,0.020" <br /> Slotted Schedule <br /> 40 PVC <br /> 12 <br /> Q <br /> ;; MW-15-30 30 @ 30'-wet;20%silt,80%fine to coarse sand. i <br /> 0 <br /> 0 <br /> CDCr <br /> 9 <br /> = 12 Mw-15 35 35.0 <br /> 34.5 SILT with sand(ML);dark yellowish brown(10YR 4/4); <br /> uj wet;20%clay,60%silt,20%fine sand;medium plasticity. <br /> i <br /> ML <br /> Q <br /> O <br /> 0 MW-15- 40 40.0 <br /> 39.5 <br /> a Bottom of <br /> o Boring @ 40 It <br /> 0 <br /> J <br /> J <br /> J <br /> 45 <br /> PAGE 1 OF 1 <br />