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Conestoga-Rovers&Associates BORING/WELL LOG <br /> 19449 Riverside Drive, Suite 230 <br /> f� <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-8 <br /> JOB/SITE NAME Former Shell Pipelines-Mountain House,NBH B DRILLING STARTED 02-Sep-09 <br /> LOCATION Tracy,California DRILLING COMPLETED 10-Sep-09 <br /> PROJECT NUMBER 060222 WELL DEVELOPMENT DATE(YIELD) 24-Sep-09(40.0 gallons) <br /> DRILLER Gregg Drilling GROUND SURFACE ELEVATION 107.15 ft above msl <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 108.85 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) 26.63 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 /> fn � F- X C6U � � <br /> CL 0 Z a H w Q O SOIL DESCRIPTION = WELL DIAGRAM <br /> a � Q w p C�7 pw <br /> U UU <br /> SILT(ML);brown(10YR 4/3);dry;30%clay,65%silt, Gompleted with <br /> ML 5%fine sand;medium plasticity. Grassy surface,no 2'tall stovepipe. <br /> --- <br /> —cracking;silt has blockyltructure cowacted.------ 2.5 <br /> 0.0 ;5 SP SAND(SP);brown(10YR 5/3);dry; 100%fine to <br /> 9 medium-grained sand;high permeability. <br /> 7.5 <br /> 0.0 ;; Sandy SILT(ML);yellowish brown(10YR 5/4);dry;70% <br /> 20 10— silt,30%fine-grained sand;low permeability. Portland Type II <br /> ML <br /> ° 17 @ 13.5'-70%silt,30%fine-grained sand;low 14.5 <br /> 0 2° 15— <br /> SM <br /> g SM Silty SAND(SM);yellowish brown(10YR 5/4);dry; 15% <br /> _— _silt 85%fine to medium-grained sandihig eermeabili�__ 16.7 <br /> SAND(SP);yellowish brown(10YR 5/6);dry; 100%fine <br /> to medium-grained sand;high permeability. <br /> LL 0.0 za SP <br /> 19 <br /> Lu 20 Bentonite Seal <br /> 0 <br /> n _ 21.7 <br /> c0 -- ————————————————————————— <br /> C0 Monterey Sand <br /> x #2/12 <br /> z <br /> N 0.0 a SILT(ML);light olive brown(2.5Y 5/4);moist;5%clay, <br /> 0 19 25 85%silt, 10%fine-grained sand;low permeability. <br /> 0 <br /> i 1 <br /> D - <br /> Lu Q <br /> U <br /> co <br /> m <br /> 0.0 e @ 28.5'-wet; 10%clay,85%silt,5%fine-grained sand; <br /> N 78 30 ML low plasticity;low permeability. <br /> 0 2"-diam.,0.020" <br /> `S Slotted Schedule <br /> i <br /> w 40 PVC - <br /> 0 <br /> CS <br /> a 0.0 e @ 33.5'-moist to wet. <br /> = 10 135— <br /> y <br /> W <br /> U 0.0 10 <br /> 12 38.0 <br /> 0 <br /> z <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 />