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Conestoga-Rovers&Associates BORING/WELL LOG <br /> _ 19449 Riverside Drive, Suite 230 <br /> l Sonoma,CA 95476 <br /> Telephone: 707-935-4850 <br /> Fax: 707-935-6649 <br /> CLIENT NAME Shell Oil Products US BORINGMELL NAME MW-10 <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House,NBH B DRILLING STARTED 03-Sep-09 <br /> LOCATION Tracy,California DRILLING COMPLETED 11-Sep-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 25-Sep-09(30.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 110.08 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 112.42 ft above msl <br /> BORING DIAMETER 8" SCREENED INTERVAL 22 to 37 fbq <br /> LOGGED BY C.Rodriguez DEPTH TO WATER(First Encountered) 27.0 ft(11-Sep-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 28.49 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) <br /> Q O Z ii LLJ <br /> Lu Q p SOIL DESCRIPTION z= WELL DIAGRAM <br /> m0 � x p <br /> a vw o0 <br /> SILT(ML);brown(10YR 4/3);dry;25%clay,75%silt; Completed with <br /> medium plasticity;block structure;compact;grassy 2'tall stovepipe. <br /> surface. <br /> @1'-25%clay,70%silt,5%fine gravel. <br /> 2.4 11 MW-10-5 5 @5'-dark brown(7.5YR 3/2);dry;hard. <br /> 15 <br /> 0 <br /> @6.5'-hard. <br /> 10 <br /> 20 <br /> 0 20 ML <br /> c� <br /> 2.6 13 @8'-hard. <br /> a 16 <br /> LU Portland Type II <br /> o' <br /> c7 <br /> z 3.0 a Mw-10 10 10 @10'-firm. <br /> N 9 <br /> N <br /> N <br /> o <br /> @11.25'-Sandy SILT(ML);yellowish brown(10YR <br /> 05/6);dry;soft;70%silt,30%fine sand;low plasticity. <br /> LU e <br /> U 5 <br /> 5 <br /> 0.5 8 @13'-Sandy SILT(ML).;yellowish brown(10YR 5/6); <br /> 0 5 dry;firm;20%clay,60%silt,20%fine sand;low to <br /> medium plasticity;block structure. <br /> 0 <br /> 15.0 <br /> a 0.6 9 MW-10.15 15 Silty SAND(SM);yellowish brown(10YR 5/6);dry; <br /> 9 SM medium dense;20%silt,70%fine sand, 10%fine gravel <br /> W (subrounded and elongated gravel up to 1 inch diameter). <br /> = 16.5 <br /> Sandy SILT(ML);yellowish brown(10YR 5/6);dry;firm; <br /> < 0 7 y ML 5%clay,50%silt,45%very fine sand;low plasticity. <br /> 0 s <br /> z <br /> N s 18.0 <br /> eSilty SAND(SM);yellowish brown(10YR 5/6);dry; <br /> o ++ SM medium dense;30%silt,70%fine sand. <br /> 0 19'0 Bentonite Seal <br /> 0 SAND(SP);light olive brown(2.5Y 5/3);5%silt,90% <br /> SP medium sand,5%gravel. <br /> 20 20.0 <br /> Continued Next Page PAGE 1 OF 2 <br />