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Conestoga-Rovers&Associates BORING/WELL LOG <br /> (2p <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 BORINGIWELL NAME MW-7 <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House,NBH B DRILLING STARTED 03-Sep-09 <br /> LOCATION Tracy,California DRILLING COMPLETED 10-Sep-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 24-Sep-09(22.5 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 109.69 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 111.54 ft above msl <br /> BORING DIAMETER 8" SCREENED INTERVAL 23 to 38 fbq <br /> LOGGED BY C. Rodriguez DEPTH TO WATER(First Encountered) 28.0 ft(10-Sep-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 27.86 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 /> U) F- rn <br /> n 0Z W <br /> Ow rn Q O SOIL DESCRIPTION = WELL DIAGRAM <br /> o = o ~ o-Q <br /> a mUU Q W o Uw <br /> U UU <br /> SILT(ML);brown(10YR 4/3);dry; 15%clay,80%silt, Completed with <br /> 5%fine-grained sand;low plasticity;low permeability. 2'tall stovepipe. <br /> Surface grassy with fine cracks;silt clayey,compacted, <br /> blocky structure. <br /> 0.0 15 5 Sandy SILT(ML);brown(10YR 4/3);dry;70%silt,30% <br /> 75 fine-grained sand;low to medium permeability. <br /> ML <br /> 0.0 u Silt(ML);brown(10YR 4/3);dry;90%silt, 10%fine to <br /> 14 10— medium-grained sand;low permeability. Portland Type II <br /> 15 @ 13.5'-5%clay,90%silt,5%fine to medium-grained <br /> 0 <br /> t9 115sand;low permeability. <br /> -------------------------- <br /> 16.5 <br /> 0 <br /> 0.0 ;9 SP SAND(SP);light brownish gray(10YR 6/2);dry; 100% <br /> o25 20 fine to medium-grained sand;high permeability. Bentonite Seal <br /> c� 22.0 <br /> m — -------------------------- Monterey Sand <br /> x #2/12 <br /> z <br /> N 0.0 112 SILT(ML);dark yellowish brown(10YR 4/4);moist; 10% <br /> 01B 25 clay,90%silt;low plasticity;low permeability;mottled with <br /> g 10YR 7/8. <br /> o ML <br /> Lu <br /> U <br /> m <br /> 0.0 91 @ 28.5'-wet; 10%clay,90%silt;low permability;low <br /> N 72 30 plasticity. <br /> o @ 29'-moist to wet. 2"-diam.,0.020" <br /> --- -------------------------- 31.5 '. Slotted Schedule <br /> N <br /> 40 PVC <br /> O <br /> a <br /> 0.0 13SM Silty SAND(SM);dark grayish brown(2.5Y 4/2);wet; <br /> 13 35 25%silt,75%fine to medium-grained sand;medium to <br /> high permeability. <br /> U= 0.0 37.0 <br /> ML SILT(ML);dark grayish brown(2.5Y 4/2);moist; 15% 38.0 <br /> clay,80%silt,5%fine-grained sand; low plasticity;low <br /> z ermeabilit . <br /> y 40 Bottom of <br /> Boring @ 38 ft <br /> 0 <br /> a <br /> O <br /> O <br /> J <br /> J <br /> J <br /> 45 <br /> PAGE 1 OF 1 <br />