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Conestoga-Rover, ssociates <br /> BORING/WELL LOG <br /> 19449 Riverside Drive,Suite 230 <br /> Lv Sonoma, CA 95476 <br /> .• Telephone: 707-935-4850 <br /> Fax: 707-935-6649 <br /> CLIENT NAME Shell Oil Products US BORINGIWELL NAME ti1W-19 <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House NBH B DRILLING STARTED 31-Auq-09 <br /> LOCATION Tracy California DRILLING COMPLETED 08-Sep-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) _25-Sep-09(30.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 101.18 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 103.41 ft above msl <br /> BORING DIAMETER 8" SCREENED INTERVAL 22 to 37 fbq <br /> LOGGED BY C. Rodriguez DEPTH TO WATER(First Encountered) 27.0 ft(08-Sep-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 27.87 ft(30-Sep-09) t_ <br /> REMARKS Air Knifed to 2 fbq Water Knifed to 5 fbg Above ground construction consisting of a 2 ft Stovepipe. <br /> E vi 2 u� U f o1 <br /> �- 2 U2 <br /> m O X w vi O SOIL DESCRIPTION Z F WELL DIAGRAM <br /> 2 U < W O O O Ow <br /> O <br /> SILT(ML);brown(10YR 4/3);dry;20%day,75%silt, Comple e wl <br /> 5%fine sand;low plasticity;prismatic structure;compact; 2'tall stovepipe. <br /> grassy surface with cracks up to 1 inch in diameter. <br /> @4'-SILT with Sand(ML); 15%clay,70%silt,15%fine <br /> sand;low plasticity. <br /> 0.9 a MN-19-5 5— <br /> @5'- SILT(ML);very dark grayish brown(2.5Y 3/2); <br /> firm;20%clay,70%silt, 10%fine sand;low plasticity; <br /> blocky;roots and trace of fine subrounded gravel(angular <br /> ° ML rock 1.5 inches in diameter). <br /> a @6'-SILT with sand(ML);25%clay,60%silt,15% <br /> e - sand;low to medium plasticity. <br /> 11 <br /> � 11 <br /> 0 <br /> ca <br /> _D 0.0 1a @8-Sandy SILT(MLI;hard; 15%day,45%silt,40% <br /> fine sand;low plasticity;trace of grave <br /> o ' <br /> Portland Type IN <br /> a <br /> c7 <br /> z 0.0 110 MW-19-10 1 @10'-light olive brown(2.5Y 5/3);dry;firm;20%clay, <br /> N 40%silt,40%fine sand,medium plasticity. <br /> N <br /> m <br /> s <br /> U <br /> s @12'-10%clay,60%silt,30%very fine sand;low <br /> g 10 plasticity;blocky structure. <br /> i7 13.0 <br /> 7 Silty SAND(SM) light olive brown(2.5Y 5/3);dry; <br /> g ' SM loose;5%clay,401/6 silt,55%fine sand;blocky structure. <br /> i <br /> 0 <br /> __________ 14.5 0.0 Sandy SILT(ML);light olive brown(2.5Y 5/4);dry; 10% <br /> < a Mw-19 15 15 clay,60%silt,30%very fine sand;low to medium <br /> v 12 ML plasticity. <br /> v 16.5 <br /> a Silty SAND(SM):light olive brown(2.5Y 5/4);dry; <br /> o s SM loose;5%clay,40%silt,55%fine sand; low plasticity. <br /> z s <br /> 0 <br /> 18.0 <br /> Sandy SILT(ML);light olive brown(2.5Y 5/4);dry; 10% <br /> a clay,60%silt,30%very fine sand; low to medium <br /> plasticity. <br /> p Bentonite Seal <br /> ML <br /> L20 <br /> Continued Next Page PAGE r of 2 <br />