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Conestoga-Rovers&Associates BORINGIWELL 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-17 - <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House,NBH B DRILLING STARTED 31-Aug-09 <br /> LOCATION Tracy,California DRILLING COMPLETED 09-Sea-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 25-Sep-09(30.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 101.61 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 103.96 ft above msl <br /> BORING DIAMETER 8" SCREENED INTERVAL 23 to 38 fbq <br /> LOGGED BY C.Rodriguez DEPTH TO WATER(First Encountered) 29.0 ft(09-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 /> CL F— W Z = <br /> O <br /> a W Q p SOIL DESCRIPTION = WELL DIAGRAM <br /> a mO Q W0 =i 00 0w <br /> U) U W <br /> SILT(ML);brown(10YR 4/3);dry; 15%clay,80%silt, Completed with <br /> 5%fine sand;low plasticity;compact;grassy surface with 2'tall stovepipe. <br /> cracks up to 1 inch in diameter. <br /> ML <br /> 0.0 s 5 @5'-soft;20%clay,70%silt, 10%fine sand;block <br /> 6 structure. <br /> @6'-Sandy SILT(ML).;light olive brown(2.5Y 5/3);dry; <br /> —— 5%clay,65%silt,30%fine sand;low to medium plasticity;,,,- 8.0 <br /> block structure. ----------------- <br /> 0.0 2 Silty SAND(SM);light olive brown(2.5Y 5/3);dry; Portland Type II <br /> 4 10 loose;5%clay,40%silt,55%fine to medium sand;low to <br /> SM medium plasticity;block structure;porous. <br /> 14.0 <br /> 6 Sandy SILT(ML);light olive brown(2.5Y 5/4);dry;soft; <br /> s 15- <br /> 15%clay,55%silt,30%very fine sand;carbon ribbons; <br /> porous. <br /> 0 <br /> �? <br /> ML <br /> J <br /> D 6 <br /> � .9 @19'-firm. <br /> Lu 20 Bentonite Seal <br /> o _ <br /> -- -------------------------- 21.5 <br /> mMonterey Sand <br /> _ #2/12 <br /> Z Silty SAND(SM);light olive brown(2.5Y 5/4);moist; <br /> N i SM medium dense;5%clay,40%silt,55%fine sand;block <br /> 0 s 25 structure;caliche. <br /> 26.5 <br /> 0 <br /> w <br /> U i <br /> SILT(ML)•light olive brown(2.5Y 5/4);moist;20%clay, Q <br /> a 70%silt, 10%fine sand;low plasticity. <br /> N - <br /> 4 30 @29'-SILT with Sand(ML);soft;25%clay,60%silt, -41 2"diam.,0.020^ <br /> 15%fine sand;medium plasticity. Slotted schedule <br /> N ML 40 PVC <br /> 0 <br /> co <br /> 0 <br /> a @33.5'-SILT(ML);wet;30%clay,60%silt, 10%fine <br /> 9 35 sand;medium plasticity;block structure;caliche. <br /> @34'-firm. <br /> Lu <br /> M <br /> 38.0 <br /> a <br /> 0 <br /> 0 <br /> 0 40 Bottom of <br /> D Boring @ 38 ft <br /> 0 <br /> a <br /> 0 <br /> 0 <br /> J <br /> J <br /> J <br /> 45 <br /> PAGE i OF 1 <br />