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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 BORINGIWELL NAME MWA 8 - <br /> JOBlSITE NAME Former Shell Pipelines-Mountain House,NBH B DRILLING STARTED 31-Aug-09 <br /> LOCATION Tracy,California DRILLING COMPLETED 08-Sep-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 23-Sep-09(30.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 101.17 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 103.49 ft above msl <br /> BORING DIAMETER 8" SCREENED INTERVAL 23 to 38 fbq <br /> LOGGED BY C.Rodriguez DEPTH TO WATER(First Encountered) 28.0 ft(08-Sep-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 28.20 ft(30-Sep-09) 1 <br /> REMARKS Air Knifed to 2 fbq;Water Knifed to 5 fbq.Above ground construction consisting of a 2 ft.Stovepipe. <br /> U) O U rn <br /> 8 O a a-CR Q p SOIL DESCRIPTION = WELL DIAGRAM <br /> 0of CL <br /> o mV < W = 0 OD <br /> SILT(ML);brown(10YR 4/3);dry;20%clay,75%silt, Completed with <br /> 5%fine sand; low plasticity;blocky to prismatic structure; 2'tall stovepipe. <br /> compact;grassy surface with cracks up to 1 inch in <br /> diameter. <br /> ML <br /> 2.2 's 5 @5'-soft; 15%clay,80%silt,5%sand;low plasticity. <br /> 2 <br /> 7.5 <br /> Silty SAND(SM);brown(10YR 4/3);dry;5%clay,40% <br /> silt,55%very fine sand;subangular and blocky;powdery. <br /> 1.5 ; SM @9'-brown(10YR 4/3);dry;loose;5%clay,40%silt, Portland Type II <br /> s 10 55%very fine sand. <br /> 12.0 <br /> s Sandy SILT(ML);brown(10YR 4/3);dry;loose;5%clay, <br /> 0 0.5 u 15- 55%silt,40%fine sand. <br /> 0 <br /> c? <br /> J <br /> LL 0.5 5 @19'-olive brown(2.5Y 4/3);moist;loose;5%clay,55% <br /> LU s 20 silt,.40%fine sand. Bentonite Seal <br /> a <br /> Monterey Sand <br /> M <br /> _ #2/12 <br /> z <br /> N <br /> 0 0.2 i 25 ML @24'-soft;15%clay,45%silt,40%medium sand;low <br /> 2i plasticity. <br /> i <br /> 0 <br /> w <br /> U <br /> t+ <br /> F 0.0 a @29'-wet; 10%clay,50%silt,40%sand; low plasticity. <br /> N <br /> o a 30 2"-diam.,0.020" <br /> g Slotted Schedule <br /> N 40 PVC - <br /> O <br /> O <br /> y <br /> a 0.0 5 @34'-light olive brown(2.5Y 5/3);wet;soft;5%clay,50% <br /> s 35 silt,45%very fine sand;low plasticity. <br /> Lu <br /> x <br /> 0.0 @37'-SILT with sand(ML);light olive brown(2.5Y 5/3); 38.0 <br /> moist;40%clay,45%silt, 15%sand;high plasticity; <br /> o caliche veins. <br /> y 40 Bottom of <br /> Boring @ 38 ft <br /> 0 <br /> a <br /> O <br /> O <br /> J <br /> J <br /> J <br /> 45 <br /> PAGE 1 OF 1 <br />