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Conestoga-Rovers & Associates BORING/WELL LOG <br /> R. 19449 Riverside Drive, Suite 230 <br /> Sonoma, CA 95476 <br /> a Telephone: 707-935-4850 <br /> Fax: 707-935-6649 <br /> CLIENT NAME Shell Oil Products US BORING/WELL NAME MW-12 <br /> JOB/SITE NAME Former Shell Pipeline DRILLING STARTED 18-Jul-11 <br /> LOCATION Cordes Ranch Tracy California DRILLING COMPLETED 20-Jul-11 <br /> PROJECT NUMBER 060223 WELL DEVELOPMENT DATE (YIELD) NA <br /> DRILLER Cascade Drilling Co. GROUND SURFACE ELEVATION 121 .89 it above mal <br /> DRILLING METHOD Roto-sonic vibration TOP OF CASING ELEVATION 124.82 It above msl <br /> BORING DIAMETER 6" SCREENED INTERVAL 35 to 45 fbq <br /> LOGGED BY B. Siegfried DEPTH TO WATER (First Encountered) 35.0 ft (20-Jul-11 ) <br /> REVIEWED BY J. Gaarder DEPTH TO WATER (Static) NA 1 <br /> REMARKS <br /> U) FujU ~ <br /> OM F w 2 010 vLL DIAGRAM <br /> QJ O SOIL DESCRIPTION ? I V+/ <br /> Soil was not logged from 0-5 feet. <br /> 5 - - igh — — - - - - 5.0 <br /> 0.0 MW-12-5' SILT (ML) ; lt olive brown (2.5Y 5/6); dry; 5% clay, <br /> 85% silt, 10% fine sand. <br /> ML <br /> 9.0 <br /> Silty SAND (SM) ' olive brown (2.5Y4/4); moist; 15% <br /> 0.0 MW-12-10' 10 silt, 85% fine to medium sand. <br /> @ <br /> 12.5' - light olive brown (2.5Y 5/4); moist; 5% clay, 35% <br /> silt, 60% fine sand. <br /> 0.0 M'N-12-15' 15 SM Portland Type II <br /> C <br /> c� <br /> u <br /> to 0,0 MW-12-20' 20 <br /> 20.4 <br /> MLJU I - Sandy SILT (MLI ; light olive brown (2.5Y 5/4); moist; 21 .0 <br /> SP-SM 10% clay, 50% silt 40% fine sand. <br /> SAND with Silt 18P-SM) ; light olive brown (2.5Y 5/4); 22.2 <br /> moist' 10% silt 90% medium sand. <br /> SM Silty SAND SM) ; light olive brown (2.5Y 5/4); moist; 5% <br /> clay, 35% silt, 60% medium sand. <br /> LL 0.0 MW-12-25' 25 24.5' - 10% clay, 40% silt, 50% fine sand. 25.0 <br /> SILT with Sand (ML) ; olive brown (2.5Y 4/4); moist; 20% <br /> clay, 65% silt, 15% fine sand. <br /> i <br /> $ ML <br /> 0.0 MW-12-30' 30 <br /> Bentonite Seal <br /> 33.2 <br /> o SAND SP) ; olive brown (2.5Y 414); moist; 100% 33.4 <br /> Monterey Sand # <br /> ML medium sand. 35.0 <br /> MW-12x5' 35 q <br /> Continued Next Page PAGE 1 OF 2 <br />