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Conestoga-Rovers sociates BORINGMIELL LOG <br /> 19449 Riverside Drive,Suite 230 <br /> Sonoma,CA 95475 <br /> Telephone: 707-935-4850 <br /> Fax: 707-935-6649 <br /> CLIENT NAME Shell Oil Products US BORINGIWELL NAME MW-12 <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House NBH B DRILLING STARTED 02-Seo-09 <br /> LOCATION Tracy California DRILLING COMPLETED 10-Seo-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 24-Sep-09(12.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 111.01 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 113.34 ft above msl <br /> BORING DIAMETER 8" SCREENED INTERVAL 23 to 38 fbq <br /> LOGGED BY _ C.Rodriguez DEPTH TO WATER(First Encountered) 28.5 ft(10-Sep-09) Q <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 29.68 ft(30-Sep-09) 1 <br /> REMARKS Air Knifed to 1 fbg•Water Knifed to 5 fbg Above ground construction consisting of a 2 ft Stovepipe <br /> E co 1-_ H <br /> v_ 0) <br /> a <br /> OZ Q. F w le vii ¢O SOIL DESCRIPTION = WELL DIAGRAM <br /> CL m0 Q w 0 a Ix Za <br /> � COQ <br /> SILT(ML);brown(10YR 4/3);dry;30%clay,65%sift, 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 /> ML <br /> @4'-SILT with Sand(ML);yellowish brown(10YR 5/4); <br /> 5 dry;5%clay,80%silt,15%fine sand;low plasticity;trace <br /> s subrounded gravel 3 inch to 4 inch diameter. <br /> @5'- light olive brown(2.5Y 5/4);dry;soft;20%clay, 7.5 <br /> 55%silt,25%very fine sand;low to medium plasticity; / <br /> 3.0 a \block structure.— _ ___ __ / <br /> 3 : ht olive brown 2 <br /> � 0 Silty SAND ISM) light ———5Y 5/4_ _)�dry; Portland Type II <br /> 10 <br /> loose;45/o silt,55%very fine sand. <br /> SM <br /> 3.9 <br /> 0 0 15 @14'-medium dense. <br /> 16.5-- ------------- <br /> c� <br /> r <br /> 4.5 ,°, SP SAND(SP);dark yellowish brown(10YR 4/4);dry to <br /> w ,. 20 moist;medium dense;5%silt,95%fine sand. <br /> Bentonite Seal <br /> a — -------------------------- <br /> 21.0 <br /> c� <br /> m ML Monterey Sand <br /> = SILTwith and(ML);yellowish brown(10YR 5/4);dry; t:2J12 <br /> v 1.5 1i 20%clay,55%silt,25%fine sand;medium plasticity: 24.0 - <br /> o ° block structure. <br /> 25 <br /> g SP SAND(SP);yellowish brown 00YR 5/4);dry;medium <br /> -- dens%5%silt 95%fnesand_---------- 26.5 <br /> C, <br /> LU <br /> U <br /> 2.2 ; SZ <br /> ,r SILT(ML);yellowish brown(10YR 5/4);moist;firm;30% 1 <br /> 0 30 clay,65%silt,5%fine sand;medium to high plasticity; z'-diem.,0.020" <br /> 8 ML block structure;caliche veins;some surface water on slotted Schedule <br /> N veins. 40 PVC <br /> 0 <br /> @33.5'-Sandv SILT(ML);brown(10YR 5/3);wet;5% <br /> i clay,60%silt,35%fine sand;low plasticity. <br /> 1 g 35 <br /> @34'-brown(10YR 5/3);wet;5%clay,50%silt,45%fine 35.8 <br /> W --- -,sand`bwptasticity.----_-----------�— <br /> = 18 SP SAND(SP);very dark grayish brown(2.5Y wet; <br /> „ medium dense 5%silt 95%fine to medium sand. 37.5 <br /> SILT(ML);brown(10YR 5/3);wet;30%clay,65%silt, 38.0 <br /> 5%fine sand medium to high lasticit . <br /> 40 Bottom of <br /> o Boring @ 38 ft <br /> a <br /> c� <br /> 0 <br /> J <br /> 45 <br /> PAGE r OF f <br />