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$ms sx Conestoga-Rovers&Associates BORING/WELL LOG <br /> % <br /> 19449 Riverside Drive, Suite 230 <br /> Sonoma, CA 95476 <br /> P� Telephone: 707-935-4850 <br /> Fax: 707-935-6649 <br /> CLIENT NAME Shell Oil Products US BORINGIWELL NAME MW-6 <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House, NBH B DRILLING STARTED 03-Sep-09 <br /> LOCATION Tracy,California DRILLING COMPLETED 11-Sep-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 24-Sep-09(25.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 113.84 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 116.29 ft above msl <br /> BORING DIAMETER 8" SCREENED INTERVAL 23 to 38 fbq <br /> LOGGED BY C. Rodriguez DEPTH TO WATER(First Encountered) 33.8 ft(11-Sep-09) Q <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 30.46 ft(30-Sep-09) 1 <br /> REMARKS Air Knifed to 1 fbq;Water knifed to 5 fbq. Above ground construction consisting of a 2 ft.Stovepipe. <br /> CL <br /> O a s Q O SOIL DESCRIPTION = WELL DIAGRAM <br /> IL <br /> FL m00 Q W (7J OW <br /> U UO <br /> SILT(ML);brown(10YR 4/3);dry;20%clay,75%silt, Completed witFT <br /> 5%fine-grained sand;low to medium plasticity;grassy 2'tall stovepipe. <br /> surface with fine cracks;silt has blocky structure, <br /> compacted. <br /> 0.4 s 5 ML Sandy SILT(ML);olive brown(2.5Y 4/4);dry;20%clay, <br /> 20 50%silt,30%fine-grained sand;low plasticity;caliche <br /> veins present. <br /> 0.2 <br /> 10 @ 9'-55%silt,45%fine-grained sand;low plasticity; Portland Type II <br /> loose. <br /> -- --------------------- 11.7 <br /> 0.7 5 SILT(ML);olive brown(2.5Y 4/4);blocky structure,30% <br /> a 13 115clay,65%silt,5%fine-grained sand;medium to high <br /> ML plasticity. <br /> 0 <br /> c� <br /> a 0.1 5 @ 18.5'-moist, 10%clay,80%silt, 10%fine-grained <br /> W e 20—___ sand; low plasticity;buttery,smooth texture. 20.5 Bentonite Seal <br /> -------------------------- <br /> a SAND(SP);light olive brown(2.5Y 5/4);dry;95%fine to <br /> medium-grained sand;5%fine-grained gravel;trace Monterey Sand <br /> = subangular to subrounded gravel up to 1 cm diameter. #2/12 <br /> z <br /> 0.1 u SP <br /> N 11 25 <br /> 0 <br /> O <br /> ——— 26.5 <br /> M SP-SM. :.' <br /> 0.0 SAND with silt(SP-SM);yellowish brown(10YR 5/4): 29.5 <br /> 30 ML moist 10%silt 90%fine- rained sand,caliche present. <br /> o -- SILT(ML);yellowish brown(10YR 5/4);moist;20%clay, 30.5 2"-diam.,0.020^ <br /> X701L.lLR 10%fine rained sand;medium elasticity stiff.—/ Slotted Schedule <br /> o Silty SAND(SM);silt increases with depth. 40 PVC <br /> o SM <br /> Sz <br /> @ 33.5'-yellowish brown(10YR 5/4);wet;30%silt,70% - <br /> M35— fine-grained sand.___________ ______ 35.5 <br /> w SILT fML);yellowish brown(10YR 5/4);moist;35%clay, <br /> M ML 60%silt,5%fine-grained sand; high plasticity. <br /> 38.0 <br /> a <br /> 0 <br /> 0 <br /> 40 Bottom of <br /> o Boring @ 38.5 <br /> a ft <br /> 0 <br /> 0 <br /> J <br /> J <br /> J <br /> 45 <br /> PAGE 1 OF i <br />