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Conestoga-Rovers&Associates BORINGMELL LOG <br /> F• 4 `� 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 BORINGIWELL NAME MW-12 <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House,NBH B DRILLING STARTED 02-Sea-09 <br /> LOCATION Tracy,California DRILLING COMPLETED 10-Sea-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 24-Sep-09(12.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 111.01 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 113.34 ft above msl <br /> BORING DIAMETER 8" SCREENED INTERVAL 23 to 38 fbq <br /> LOGGED BY C.Rodriguez DEPTH TO WATER(First Encountered) 28.5 ft(10-Sep-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 29.68 ft(30-Sep-09) 1 <br /> REMARKS Air Knifed to 1 fbq;Water Knifed to 5 fbq.Above ground construction consisting of a 2 ft.Stovepipe. <br /> U H rn <br /> H^ C7 <br /> U <br /> = rn <br /> U� <br /> O a w ¢p SOIL DESCRIPTION Z WELL DIAGRAM <br /> FL m00 Q W it Uw <br /> � UW <br /> SILT(ML);brown(10YR 4/3);dry;30%clay,65%silt, Completed with <br /> 5%fine sand;medium plasticity;block structure;compact; 2'tall stovepipe. <br /> grassy surface with cracks from 1 to 2 cm in diameter. <br /> ML <br /> @4'-SILT with Sand(ML);yellowish brown(10YR 5/4); <br /> 3 5 dry;5%clay,80%silt, 15%fine sand;low plasticity;trace <br /> s subrounded gravel 3 inch to 4 inch diameter. <br /> @5'- light olive brown(2.5Y 5/4);dry;soft;20%clay, 7.5 <br /> --- 55%silt,25%very fine sand;low to medium plasticity; / <br /> 3.0 5 \block structure. _—_——_ ————/ <br /> 3 Silty SAND(SM);light olive brown(2.5Y 5/4);dry; Portland Type II <br /> 10 loose;45%silt,55%very fine sand. <br /> SM <br /> 0 3.9 15 @14'-medium dense. <br /> 16.5 <br /> 0 <br /> c� <br /> 4.5 a SP SAND(SP);dark yellowish brown(10YR 4/4);dry to <br /> w „ moist;medium dense;5%silt,95%fine sand. <br /> 0 20 Bentonite Seal <br /> :.: <br /> —. •.... 21.0 <br /> o_ <br /> m Monterey Sand <br /> ML <br /> z SILT with Sand(ML);yellowish brown(10YR 5/4);dry; #2n2 <br /> N 1.5 11 20%clay,55%silt,25%fine sand;medium plasticity: 24.0 <br /> block structure. <br /> s 25 SP SAND(SP);yellowish brown(10YR 5/4);dry;medium <br /> ———• <br /> dense-5%silt 95/o fine sand. 26.5 <br /> ————————————————— <br /> 0 <br /> LU <br /> U <br /> N <br /> 2.2 ; SILT(ML);yellowish brown(10YR 5/4);moist;firm;30% 1 <br /> 0 30 clay,65%silt,5%fine sand;medium to high plasticity; 2"-diam.,0.020" <br /> g ML block structure;caliche veins;some surface water on Slotted Schedule <br /> N veins. 40 PVC <br /> ED <br /> @33.6'-Sandy SILT(MIL),brown(10YR 5/3);wet;5% <br /> a clay,60%silt,35%fine sand;low plasticity. <br /> 1 8 <br /> 135— '@34 -brown(10YR 5/3);wet;5%clay,50%silt,45%fine 35.8 <br /> ——— sand low lastici — ' <br /> -- P--�'----------------- <br /> = 12 SP SAND(SP);very dark grayish brown(2.5Y 3/2);wet; <br /> ` 17 medium dense•5%silt 95%fine to medium sand. 37.5 <br /> SILT(ML);brown(10YR 5/3);wet;30%clay,65%silt, 38.0 <br /> z 5%fine sand;medium to high plasticity. <br /> 0 40 Bottom of <br /> Boring @ 38 ft <br /> 0 <br /> a <br /> 0 <br /> O <br /> J <br /> J <br /> J <br /> 45 <br /> PAGE 1 OF 1 <br />