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Conestoga-Rovers&Associates BORING/WELL LOG <br /> 19449 Riverside Drive, Suite 230 <br /> Sonoma, CA 95476 <br /> Telephone: 707-935-4850 <br /> Fax: 707-935-6649 <br /> CLIENT NAME Shell Oil Products US BORING/WELL NAME MW-1 <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House,NBH B DRILLING STARTED 04-Sep-09 <br /> LOCATION Tracy,California DRILLING COMPLETED 15-Sep-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 25-Sep-09(25.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 117.33 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 119.72 ft above msl <br /> BORING DIAMETER 8" SCREENED INTERVAL 23 to 38 fbq <br /> LOGGED BY C.Rodriguez DEPTH TO WATER(First Encountered) 34.0 ft(15-Sep-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 31.24 ft(30-Sep-09) 1 <br /> REMARKS Air Knifed to 5 fbg.Above ground construction consisting of a 2 ft.Stovepipe. <br /> U l— U <br /> JO a W O SOIL DESCRIPTION z= WELL DIAGRAM <br /> o m0 2 x <br /> a U < W U C7 UOQ <br /> SILT(ML);brown(10YR 4/4);dry;20%clay,75%silt, Completed wit <br /> 5%fine-grained sand;low plasticity;grassy surface with 1" 2'tall stovepipe. <br /> to 2"diam.cracks;prismatic structure;highly compact. <br /> ML Sandy SILT(ML);yellowish brown(10YR 5/4);dry;5% <br /> 0.0 5 clay,50%silt,45%fine-grained sand;low plasticity; <br /> prismatic structure. <br /> 9.0 <br /> 0.0 8 Silty SAND(SM);yellowish brown(10YR 5/4);dry;5% Portland Type II <br /> 10 clay,40%silt,55%fine-grained sand;trace rounded <br /> SM gravel 1/2"to 3/4"diameter;loose. <br /> __ _____________________ 12.8 <br /> SILT(ML);yellowish brown(10YR 5/4);dry;20%clay, <br /> °, 17 70%silt, 10%fine-grained sand; low to medium plasticity; <br /> o n 15 ML loose,blocky structure;caliche veins. <br /> 16.8 <br /> SAND with silt and gravel(SP-SM);light olive brown <br /> J (2.5Y 5/4);dry; 10%silt,75%fine to medium-grained <br /> =10.0 18 SP-SM::,.•:. sand, 15%fine,rounded and subrounded gravel up to <br /> w22 1"-diam. <br /> 0 20 Bentonite Seal <br /> 21.5 <br /> a -------------------------- <br /> --- <br /> ; <br /> M Monterey Sand <br /> Z: SM #2/12 <br /> z <br /> N0.0 uJ Silty SAND(ML);light olive brown(2.5Y 5/4);dry; 15% 24.0 <br /> 0 78 25 silt 85%sand. <br /> SP SAND(SP);light olive brown(2.5Y 5/4);dry;5%silt, <br /> %fine:grrained sand---------------- 26.8 <br /> LU <br /> 0 <br /> in <br /> 0.0 ;; SILT;light olive brown(2.5Y 5/4);dry to moist;30%clay, <br /> N 14 30 65%silt,5%fine-grained sand;medium to high plasticity; <br /> o MH prismatic structure. 2"-diam.,0.020" <br /> 0 1 Slotted Schedule <br /> , 40 PVC <br /> 9 a @ 33'-moist,30%clay,65%silt,5%fine-grained sand; 34.0 <br /> a 0.0 Z hi h lasticit ;thick caliche veins;butte texture. <br /> 35 SM Silty SAND(SM);light olive brown(2.5Y 5/4);wet;5% <br /> clay,40%silt,55%fine-grained sand. <br /> LU <br /> 0.0 @ 36'-yellowish brown(10YR 5/4);wet;15%silt,85% 37.0 <br /> ML fine to medium- rained sand. 38.0 <br /> < SILT(ML);yellowish brown(10YR 5/4);wet;30%clay, <br /> °z 60%silt 10%fine- rained sand medium lastici <br /> 0 40 Bottom of <br /> Boring @ 38 ft <br /> 0 <br /> a <br /> 0 <br /> 0 <br /> J <br /> J <br /> J <br /> 45 <br /> PAGE 1 OF 1 <br />