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• ~ Conestoga-Rovers ssociates BORINGIVVELL LOG <br /> r` 19449 Riverside Drive,Suite 230 <br /> 1 <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-15 <br /> JOBISITE NAME Former Shell Pipelines-Mountain House,NBH B DRILLING STARTED 01-Sep-09 <br /> LOCATION Tracy,California DRILLING COMPLETED 09-Sep-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 24-Sep-09(30.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 102.42 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 104.72 ft above msi <br /> BORING DIAMETER 8" SCREENED INTERVAL 22 to 37 fbq <br /> LOGGED BY C.Rodriguez DEPTH TO WATER(First Encountered) 27.5 ft(09-Sep-09) <br /> REVIEWED BY J.Gaarder DEPTH TO WATER(Static) 26.84 ft(30-Sep-09) 1 <br /> REMARKS Air Knifed to 1.5 fbq;Water Knifed to 5 fbq.Above ground construction consisting of a 2 ft.Stovepipe. <br /> g O j a H W S a p SOIL DESCRIPTION Z? WELL DIAGRAM <br /> a mU Q w 0W <br /> � UO <br /> SILT(ML);brown(10YR 4/3);dry;20%clay,75%silt, 2 tallstovepipe. <br /> 5%fine sand;low plasticity;block structure;compact; <br /> grassy surface with cracks up to 1/2 inch diameter,fill <br /> material. <br /> 0.0 a MW-15-5 5 @5-SILT with Sand(ML);rill material;yellowish brown <br /> i0 (10YR 5/4);dry;firm;20°/6 clay,65%silt,15%fine sand; <br /> low plasticity;block texture;caliche;fill material. <br /> ° @6'- very dark grayish brown(2.5Y 3/2). <br /> ML <br /> 0.0 ? @7'-hard. <br /> zo <br /> 19 @8'-SILT(ML); very dark grayish brown(2.5Y 3/2); <br /> LL 75 dry;hard;25%clay,65%silt, 10%fine sand;low <br /> o plasticity;fill material. Portland Type lI <br /> a <br /> i 0.6 a MW-15-10 1D @10'-firm. <br /> N 9 <br /> N <br /> N <br /> Op <br /> O <br /> 1 <br /> 's @12'-firm. <br /> to <br /> 0.1 ,°, @13'-Sandy SILT(ML);Native soil;yellowish brown <br /> 10 (10YR 5/4);dry;medium dense;10%clay,600/6 %silt,30 13.5 <br /> fine sand:low plasticity. <br /> Silty SAND(SM):dry;yellowish brown(10YR 5/4);5% <br /> clay,40%silt,55%fine sand. <br /> 0.0 a Mtiv-ls-ls 15 sM @15'-dry;medium dense;20%sift,80%sand. <br /> 10 <br /> 15.5'-30%silt,70%sand. <br /> O <br /> = 16.5 <br /> SAND with Silt(SP-SM);light olive brown(2.5Y 5!4); <br /> 47 d medium dense;10%silt,90%fine to medium sand. <br /> 0 11 SP-SM dry: <br /> = tt <br /> ° 18.0 <br /> 0.0 a Silty SAND(SM);light olive brown(2.5Y 5/4);dry; <br /> g to SM medium dense;30%silt,50%fine to medium sand,20% <br /> a fine gravel subrounded gravel 1 cm diameter). 19.0 Bentonite Seal <br /> o SAND with Silt(SP-SMI:light olive brown(2.5Y 5/4); <br /> SP-SM dry;10%silt,90%fine sand. <br /> 20 20.0 <br /> Continued Next Page PAGE 1 OF 2 <br />