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Conestoga-Rovers&Associates <br /> 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-4 <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House,NBH C&D DRILLING STARTED 19-Jan-09 <br /> LOCATION Tracy,CA DRILLING COMPLETED 20-Jan-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 25-Sep-09(17.5 gallons) <br /> DRILLER Gregg Drilling,C-57#485165 GROUND SURFACE ELEVATION 94.22 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 96.61 ft above msl <br /> BORING DIAMETER 8" SCREENED INTERVAL 20 to 34.9 fbq <br /> LOGGED BY S. Phillips DEPTH TO WATER(First Encountered) 28.0 ft(20-Jan-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 29.25 ft(30-Sep-09) 1 <br /> REMARKS Air knifed to 5 fbq. Above ground construction consisting of a 2 ft.Stovepipe. <br /> CL <br /> OJ Z a s Q O SOIL DESCRIPTION = WELL DIAGRAM <br /> � J <br /> 0_ 07 00- <br /> 0 <br /> 0 Q W U W <br /> U U� <br /> "opsol <br /> {' ` SOD. 0.5 <br /> SILT with Sand(ML);grayish brown(10YR 5/2);dry; <br /> ML 35%cly,55%silt,20%sand;medium plasticity. <br /> 4.0 <br /> 3 Silty SAND(SM);dry;30%clay,30%silt,40%sand. <br /> 0.0 a MW-44-5 5 <br /> 4 @ 5'-dark yellowish brown(10YR 4/4);25%silt,75% <br /> sand. <br /> SM <br /> Portland Type 1/11 <br /> 3 _ 10.0 <br /> 0.0 a MW-4-10 10 SILT with Sand(ML);dark yellowish brown(10YR 4/4); <br /> dry; 15%clay,65%silt,20%sand;medium plasticity. <br /> 0 <br /> 0.0 5 Mw-4-15 15 ML @ 15'-moist. <br /> 0 <br /> 0 <br /> F Bentonite Seal <br /> D <br /> w Monterey Sand <br /> 4 <br /> 20.0 #viz <br /> 0.0 6 MW-4-20 20 Sandy SILT(ML);dark yellowish brown(10YR 4/4); <br /> N moist; 15%clay,55%silt,30%sand;medium plasticity. <br /> N <br /> N <br /> MLS <br /> e <br /> O <br /> _ _ ________________________ 25.0 <br /> 0 0.0 s MW4-25 25 Silty SAND(SM);dark yellowish brown(10YR 4/4); <br /> N moist; 15%clay,35%silt,50%sand. <br /> NZ. <br /> SM ` S 2"-diam.,0.020" <br /> - Slotted Schedule <br /> i 40 PVC <br /> __ __________________________ 30.0 <br /> a z MW-4-3030 SAND(SW);dark yellowish brown(10YR 4/4);wet; <br /> 15%clay, 10%silt,65%fine to course sand. <br /> S9 <br /> = SP <br /> i 3 <br /> Q 6 <br /> z 6 Mwa- 35 <br /> 35.0 <br /> p 34.5 <br /> y <br /> Bottom of <br /> a Boring @ 35 ft <br /> c� <br /> 0 <br /> J <br /> J <br /> J <br /> 40 <br /> PAGE 1 OF 1 <br />