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° Conestoga-Rovers iv Associates BORING/WELL LOG <br /> L <br /> 19449 Riverside Drive, Suite 230,° Sonoma, CA 95476 <br /> Telephone: 707-935-4850 <br /> Fax: 707-935-6649 <br /> CLIENT NAME Shell Oil Products US BORING/WELL NAME MW-5 <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House, NBH B DRILLING STARTED 03-Sep-09 <br /> LOCATION Tracy,California DRILLING COMPLETED 11-Sea-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 25-Sep-09(30.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 111.90 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 114.14 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(11-Sep-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 28.72 ft(30-Sep-09) 1 <br /> REMARKS Air Knifed to 2 fbq;Water knifed to 5 fbq.Above ground construction consisting of a 2 ft.Stovepipe. <br /> U U ~ U U <br /> n O (L H a a Q p SOIL DESCRIPTION I¢—= WELL DIAGRAM <br /> 0 Z H <br /> FL m00 Q w UV � 00 Uw <br /> C/) <br /> U <br /> SILT(ML);fill;brown(10YR 4/3);dry;20%clay,70% Completed with <br /> silt, 10%fine-grained sand;low plasticity;low permeability; 2'tall stovepipe. <br /> grassy surface with minor cracking; low density. <br /> 0.0 ; 5 @ 5'-very dark gray(10YR 3/1);dry. <br /> 16 MW-5-6 <br /> 0.0 1 <br /> 15 <br /> 8 <br /> 17 <br /> io 10 ML Portland Type II <br /> 0.0 16 <br /> 16 MW-5-11 <br /> 0.0 2 @ 11.5'-brown(10YR 5/3);dry;5%clay,85%silt, 10% <br /> 79 fine to medium-grained sand;low plasticity;low <br /> s permeability. <br /> 139 <br /> E2 0.0 16 15 <br /> 0.0 9 MW-5-16 <br /> q 0.0 i9 @ 17'-dry to moist; 15%clay,75%silt, 10%fine to <br /> F „ medium-grained sand;low plasticity;low permeability. <br /> LL 14 @ 19'-dry to moist;5%clay,85%silt,10%fine to 20.0 <br /> 0 0.0 1; 20 medium rained sand low lasticit low ermeabili Bentonite seal <br /> 21a MW-5-21 SM Silty SAND(SM);native contact;brown(10YR 5/3);dry; <br /> 0.0 a 25%silt 75%fine to medium- rained sand. 22.0 Monterey Sand <br /> = 16 SP SAND(SP);brown(10YR 5/3);dry to moist;5%silt, #2/12 <br /> N e 95%fine to medium-grained sand;high permeability. 23.5 <br /> ;a ML SILT(ML);dark gray(10YR 4/1);moist;20%clay,80% <br /> 10 0.0 9 25 silt;low to mediumplasticity;low permeability. 25.5 <br /> ,s Silty SAND(SM);pale brown(10YR 6!3);moist;20% 26.0 <br /> 0 0.0 <br /> e MW-5-26 silt 80%sand hi h ermeabili <br /> 7 ML SILT(ML);dark gray(10YR 4/1);moist;20%clay,809/c 28.0 <br /> 6 silt;low to medium lastici •low permeabilitv. <br /> i 6 Silty SAND(SM);brown(10YR 5/3);wet; 15%silt,85% <br /> 0 <br /> 0.0 z 30 fine to medium-grained sand; high permeability. z°-diam.,0.020 <br /> o 7 MW-5-31 SM Slotted Schedule <br /> I <br /> 0 0.0 7 ao PVC <br /> @ 32'-wet; 15%silt,85%fine-grained sand;high <br /> 6 permeability. <br /> � s <br /> $ 6 35.0 <br /> 0.0 11 35 SILT(ML);brown(10YR 5/3);moist to wet; 10%clay, <br /> se <br /> Lu s ML 85%silt,5%fine-grained sand;low plasticity;low <br /> 7 permeability. <br /> a 0.0 a Mw-5- 38.0 <br /> g 37.5 <br /> O <br /> 0 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 />