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�- Conestoga-Rovers. ssociates BORINGIWELL 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 BORINGMELL 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 rnsl <br /> BORING DIAMETER 8" SCREENED INTERVAL 23 to 38 fbg <br /> LOGGED BY C.Rodriguez DEPTH TO WATER(First Encountered) 34.0 ft(15-Sep-09) V <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 31.24 It(30-Sep-09) 1 <br /> REMARKS Air Knifed to 5 fbg.Above ground construction consisting of a 2 fL Stovepipe. <br /> O <br /> m O rL x a� vi CIO SOIL DESCRIPTION z? WELL DIAGRAM <br /> d U < WC� W <br /> O <br /> SILT(ML);brown(10YR 414);dry;20%clay,75%silt, Completed with <br /> 5%fine-grained sand;low plasticity;grassy surface with 1" 7 tall stovepipe. <br /> to 2"diam.cracks;prismatic structure;highly compact. <br /> Mt Sandy SILT(ML);yellowish brown(1 DYR 5/4);dry;5% <br /> 0.0 <br /> 15— clay,50%silt,45%fine-grained sand;low plasticity; <br /> prismatic structure. <br /> 0.0 9.0 <br /> s Sllty SAND(SM);yellowish brown(10YR 5/4);dry;5% Portland Type II <br /> 10 Gay,40%silt,55%fine-grained sand;trace rounded <br /> SM gravel 1/2"to 314"diameter;loose. <br /> 12.8 <br /> ,z SILT(ML);yellowish brown(10YR 5/4);dry;20%Gay, <br /> ° n 70%silt,10%fine-grained sand;low to medium plasticity; <br /> 22 15 ML loose,blocky structure;caliche veins. <br /> 0 <br /> 16.8 <br /> o SAND with silt and gravel(SP-SM);light olive brown <br /> (2.5Y 5/4);dry;10%sift,75%fine to medium-grained <br /> 0.0 in SP-SM sand,15%fine,rounded and subrounded gravel up to <br /> w22 1"-diam. <br /> 0 20 Bentonite Seal <br /> '- <br /> 'a -- - -------------------------- 21.5 <br /> m Monterey Sand <br /> SM 82J 12 <br /> 0.0 o SIItV SAND(ML);light olive brown(2.5Y 5/4);dry;15% 24'0 <br /> 0 1° 25 silt 85% and. <br /> 8 SP SAND(SP);light olive brown(2.5Y 5/4);dry;5%silt, <br /> — —95%fine-Arasand---------------- 26.8 <br /> a <br /> Lu <br /> U <br /> n <br /> g 0.0 ;° SILT;light olive brown(2.5Y 5/4);dry to moist;30%clay, <br /> 14 30 65%silt,5%fine-grained sand;medium to high plasticity; <br /> o MH prismatic structure. T-diarn_0.020" <br /> $ 1 Sbtted Schedule <br /> N 40 PVC <br /> 0 <br /> e @ 33'-moist,30%clay,65%silt,5%fine-grained sand; 34.0 <br /> a 0.0 hi h lastici thick caliche veins butte texture. <br /> 35 SM Silty SAND(SM);light olive brown(2.5Y 5/4);wet;5% <br /> W clay,40%silt,55%fine-grained sand. <br /> N 0.0 @ 36'-yellowish brown(1 OYR 5/4);wet;15%silt,85% 37.0 ' <br /> ML fine to medium rained sand. 38.0 <br /> SILT(NIQ:yellowish broA,n(10YR 5/4);wet;30%clay, <br /> b60%silt 10%fine- rained sand;medium lastici <br /> 0 40 Bottom of <br /> N Boring @ 38 ft <br /> 0 <br /> a <br /> C7 <br /> S <br /> J <br /> J <br /> 45 <br /> PAGE r OF r <br />