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Conestoga-Rovers&Associates BORINGMELL LOG <br /> 19449 Riverside Drive,Suite 230 _ <br /> �. , Sonoma, CA 95476 <br /> Telephone: 707-935-4850 IA 11 <br /> Fax: 707-935-6649 <br /> CLIENT NAME Shell Oil Products US BORINGIWELL NAME MW-15 <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House,NBH B DRILLING STARTED 01-Sep-09 <br /> LOCATION Tracy,California DRILLING COMPLETED 09-Sep-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 24-Sep-09(30.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 102.42 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 104.72 ft above msl <br /> BORING DIAMETER 8" SCREENED INTERVAL 22 to 37 fbq <br /> LOGGED BY C. Rodriguez DEPTH TO WATER(First Encountered) 27.5 ft(09-Sep-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 26.84 ft(30-Sep-09) 1 <br /> REMARKS Air Knifed to 1.5 fbq;Water Knifed to 5 fbq.Above ground construction consisting of a 2 ft.Stovepipe. <br /> U H U ~ 0) <br /> n <br /> 8 O j (L H W q Q p SOIL DESCRIPTION z H WELL DIAGRAM <br /> a mo Q w Ow <br /> SILT(ML);brown(10YR 4/3);dry;20%clay,75%silt, Completed with <br /> 5%fine sand;low plasticity;block structure;compact; 2'tall stovepipe. <br /> grassy surface with cracks up to 1/2 inch diameter;fill <br /> material. <br /> 0.0 9 MW-15-5 5 @5'-SILT with Sand(ML);fill material;yellowish brown <br /> 10 (10YR 5/4);dry;firm;20%clay,65%silt, 15%fine sand; <br /> low plasticity;block texture;caliche;fill material. <br /> ° @6'- very dark grayish brown(2.5Y 3/2). <br /> 0 <br /> ML <br /> 0.0 2 @7'-hard. <br /> 0 20 <br /> Q) <br /> a @8'-SILT(ML); very dark grayish brown(2.5Y 3/2); <br /> LL 15 dry;hard;25%clay,65%silt, 10%fine sand;low <br /> LU plasticity;fill material. Portland Type li <br /> co <br /> c7 <br /> z 0.6 9 MW-15-10 1 <br /> @10'—firm. <br /> N 9 <br /> N <br /> N <br /> O <br /> O <br /> 1 <br /> O <br /> W 9 @12'-firm. <br /> W 10 <br /> 0 <br /> N 0.1 ; @13'-Sandy SILT(ML);Native soil;yellowish brown 13.5 <br /> N 70 (10YR 5/4);dry;medium dense; 10%clay,60%silt,30% <br /> o fine sand;low plasticity. <br /> N Silty SAND(SM);dry;yellowish brown(10YR 5/4);5% <br /> o clay,40%silt,55%fine sand. <br /> a 0.0 a MW-15-15 15 SM @15'-dry;medium dense;20%silt,80%sand. <br /> ,o <br /> @155-30%silt,70%sand. <br /> W 16.5 <br /> x <br /> + SAND with Silt(SP-SM);light olive brown(2.5Y 5/4); <br /> a 7 d medium dense; 10%silt,90%fine to medium sand. <br /> 0 11 SP-SM dry; <br /> Z 14 <br /> U) 18.0 <br /> 0.0 s Silty SAND(SM);light olive brown(2.5Y 5/4);dry; <br /> S ,o sM medium dense;30%silt,50%fine to medium sand,20% <br /> ° fine ravel subrounded ravel 1 cm diameter). 19.0 Bentonite seal <br /> o SAND with Silt(SP-SM);light olive brown(2.5Y 5/4); <br /> SP-SM dry; 10%silt,90%fine sand. <br /> 20 20.0 <br /> Continued Next Page PAGE 1 OF 2 <br />