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Conestoga-Rovers & Associates BORING/WELL LOG <br /> 19449 Riverside Drive, Suite 230 <br /> "v Sonoma , CA 95476 <br /> V Telephone: 707-935-4850 <br /> - •� Fax: 707-935-6649 <br /> CLIENT NAME Shell Oil Products US BORINGANELL NAME B-79A <br /> JOB/SITE NAME Former Shell Pipeline DRILLING STARTED 25-Jul-11 <br /> LOCATION Cordes Ranch Tracy, California DRILLING COMPLETED 26-Jul-11 <br /> PROJECT NUMBER 060223 WELL DEVELOPMENT DATE (YIELD) NA <br /> DRILLER Cascade Drilling Co. GROUND SURFACE ELEVATION 124.01 ft above msl <br /> DRILLING METHOD Roto-sonic vibration TOP OF CASING ELEVATION NA <br /> BORING DIAMETER 6" SCREENED INTERVAL NA <br /> LOGGED BY B. Siegfried DEPTH TO WATER (First Encountered) 40.0 ft (26-Jul-11 ) <br /> REVIEWED BY J. Gaarder DEPTH TO WATER (Static) NA <br /> REMARKS <br /> N F <br /> O F rn <br /> a O z Ja Lu F (L N o- O SOIL DESCRIPTION F ? WELL DIAGRAM <br /> a m0 4 W � OW <br /> N � o <br /> SILT (ML) ; dark grayish brown (10YR 4/2); dry; 30% <br /> clay, 70% silt. <br /> 0.0 B-79A-5' 5 ML @ 5' - light yellowish brown (10YR 6/4); 3% clay, 97% silt. <br /> @ T - dark yellowish brown (10YR 3/4); moist; 10% clay, <br /> 80% silt, 10% fine sand. <br /> 115 B-79A-t0' to9.8 <br /> SAND (SP) ; dark yellowish brown (10YR 3/4); moist; 10.0 <br /> 100% fine sand. <br /> Silty SAND (SM) dark olive gray (5Y 3/2); moist; 10% <br /> clay, 30% silt, 60% fine sand. <br /> 605 SM' @ 12,5' - 30% silt, 70% fine to medium sand. <br /> 477 B-79A-15' 15 15.0 <br /> SAND with Silt (SP-SM) ; dark olive gray (5Y 3/2); moist; <br /> 10% silt, 90% fine to medium sand. <br /> a <br /> v 553 B-79A-20' —20- <br /> 21 ,0 <br /> z Sandv SILT (ML) ; dark olive gray (5Y 3/2); moist; 70% <br /> z 244 silt, 30% fine sand. <br /> @ 21 .7-21 .9' - SAND (SP) ; dark olive gray (5Y 3/2); <br /> moist; 100% fine sand. <br /> ML @ 23.2-23.5' - Silty SAND ISM) ; dark olive gray (5Y <br /> 0 860 e-79A-25' 3/2); moist; 30% silt, 70% fine sand. <br /> 25— <br /> @ 23.9-24.0' - Silty SAND (SM) ' dark olive gray (5Y <br /> g 3/2); moist; 30% silt, 70% fine sand. <br /> @ 25' - SILT (ML) ; dark olive gray (5Y 3/2); moist; 20% <br /> clay, 70% silt, 10% fine sand. <br /> F1 I <br /> 27.7 <br /> s Silty SAND ISM) ; olive (5Y 4/3); moist; 30% silt, 70% <br /> SM fine to medium sand. <br /> 29.5 <br /> 1338 B-79A-30' 30ML SILT ML ; olive 5Y 413); moist; 20% clay, 80% silt. 30.0 <br /> i Silty SAND (SM) ; olive (5Y 4/3); moist; 30% silt, 70% <br /> 1338 fine sand. <br /> f. @ 31 -32' - Interbedded with Sandy SILT (ML) ; olive (5Y <br /> 4/3); moist; 70% silt, 30% fine sand. <br /> 32.8-38,3' - Interbedded with Sandy SILT (ML) ; olive <br /> 01 <br /> SM (SY 4/3); moist; 70% silt, 30% fine sand. <br /> S B-794-35' 35 . . <br /> Continued Next Page PAGE f OF 3 <br />