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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 MW-11 <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House,NBH B DRILLING STARTED 02-Sea-09 <br /> LOCATION Tracy,California DRILLING COMPLETED 10-Sep-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 24-Sep-09(20.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 108.47 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 111.13 ft above msl <br /> BORING DIAMETER 8" SCREENED INTERVAL 24 to 36 fbq <br /> LOGGED BY C.Rodriguez DEPTH TO WATER(First Encountered) 26.0 ft(10-Sep-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 28.49 ft(30-Sep-09) 1 <br /> REMARKS Air Knifed to 2 fbq;Water Knifed 5 fbq.Above ground construction consisting of a 2 ft.Stovepipe. <br /> V) H U ~ <br /> o O 0 X a Q <p SOIL DESCRIPTION ? WELL DIAGRAM <br /> n m0 < w o C9 0o <br /> SILT(ML);brown(10YR 4/3);dry;25%clay,70%silt, Completed with <br /> 5%fine sand;medium plasticity;block structure;compact; 2'tall stovepipe. <br /> grassy surface with cracks from 1 to 2 cm in diameter. <br /> @3"-piece of large PVC pipe. <br /> 3.0 MW-1-5 5 @5'- very dark grayish brown(2.5Y 3/2);block structure; <br /> roots. <br /> Q ML <br /> 0 <br /> 13 <br /> 0 <br /> M <br /> @7'-hard. <br /> 0 15 <br /> 1.0 10 <br /> 12 <br /> @9'-firm. <br /> Portland Type II <br /> m s10 <br /> z 9 Mw-11-10 @10'-Sandy SILT(ML);light olive brown(2.5Y 5/4); <br /> N 9 dry;firm; 10%clay,505/6silt,40%very fine sand;low <br /> N plasticity. <br /> N <br /> 0 12.0 <br /> Uj 1.48 Silty SAND(SM);light olive brown(2.5Y 5/4);dry; <br /> s SM loose;5%clay,45%silt,50%fine sand. <br /> 13.0 <br /> N 0.3 s SILT(ML);light olive brown(2.5Y 5/4);dry;soft;20% <br /> 0 5 clay,75%silt,5%sand;low to medium plasticity;block <br /> ML structure texture;caliche. <br /> N <br /> 14.7 <br /> 615 SAND with Silt(SPSM);light olive brown(2.5Y 5/4); <br /> K 0.3 9 MW-11-15 <br /> i ,3 SP-SM:. : :: dry;medium dense; 10%silt,90%fine sand. <br /> 16.0 <br /> Silty SAND(SM)-;light olive brown(2.5Y 5/3);dry; 15% <br /> SM silt,70%fine to coarse sand, 15%fine gravel(rounded <br /> and angular ravel u to 1 inch diameter). 17.0 <br /> 0 e SILT(ML);light olive brown(2.5Y 5/4);moist;firm;20% <br /> o clay,75%silt,5%fine sand;low plasticity. <br /> D ML <br /> _ a <br /> o e <br /> a 19.0 <br /> o SAND with Silt(SP-SM);light olive brown(2.5Y 5/4); <br /> SP-SM01 moist; 10%silt,90%fine to medium sand. <br /> 20 20.0 <br /> Continued Next Page PAGE 1 OF 2 <br />