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Conestoga-Rovers�&Associates tSORING / WELL LOG <br /> 5900 Hollis Street, Suite A <br /> a Emeryville,CA 94608 <br /> Telephone: 510-420-0700 <br /> x Fax: 510-420-9170 <br /> CLIENT NAME Olympian JV BORING/WELL NAME MW-15 <br /> JOB/SITE NAME JIMCO Truck Plaza DRILLING STARTED 12-Mar-10 <br /> LOCATION 1022 Frontage Road,Ripon,CA DRILLING COMPLETED 16-Mar-10 <br /> PROJECT NUMBER 161556 WELL DEVELOPMENT DATE(YIELD) 26-Mar-10(70 Gallons) <br /> DRILLER Gregg Drilling,C57#485165 GROUND SURFACE ELEVATION NA <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 58.53 ft above msl <br /> BORING DIAMETER 10.5" SCREENED INTERVALS 15 to 35 fbg <br /> LOGGED BY C.Hee DEPTH TO WATER(First Encountered) 25.00 fbg(16-Mar-10) Q <br /> REVIEWED BY R.Scheele,PG#6842 DEPTH TO WATER(Static) 24.55 fbg(07-Apr-10) Z <br /> REMARKS Well constructed with circum screen,Soil samples from 15'-24.5'utilized for Bench Scale Treatability Study. <br /> i <br /> E ?�F w Z U U <br /> 8 O j i W w a LITHOLOGIO DESCRIPTION z~ WELL DIAGRAM <br /> a tn00 M w O �—' OLU <br /> a <br /> UO <br /> ASPHALT: 4inchesthick. 0.3 <br /> SAND: Moderate brown(5YR 3/4);moist;5%silt,95% <br /> Fine to medium grained sand;non-plastic;high.estimated <br /> permeability. <br /> I <br /> SW <br /> I. <br /> 4.0 <br /> 0.3 MW-15-4 SAND with Silt: Moderate brown(5YR 3/4);moist;5% <br /> clay,10%silt,85%fine to medium grained sand;low <br /> 5 plasticity;high estimated permeability. <br /> SM Portland Type VII <br /> i. <br /> I <br /> 7.0 <br /> Sandy SILT with Clay(5YR 5/6): Light brown;dry;10% �- <br /> clay,70%silt,20%fine to medium grained sand;low 4•diem.,Schedule <br /> o ML plasticity;low estimated permeability. 40 PVC <br /> __________________________ 8.5 <br /> Sandy,Clayey SILT Moderate yellowish brown(10YR <br /> 0 5/4);dry;20%clay,65%silt,15%fine to medium grained <br /> F sand;low plasticity;low estimated permeability. f. <br /> J • <br /> LL 0.1 MW-15-10 10 <br /> W <br /> ML <br /> i 16 <br /> 20 I <br /> F 20 <br /> i <br /> it I <br /> } Bentonite Seal <br /> J <br /> --— .. — — — — -- --- 12.8 <br /> LL Clayey Silty SAND: Moderate yellowish brown(10YR <br /> SM 5/4);dry;15%clay, <br /> U° 40%silt,45%fine to medium grained <br /> sand;low plasticity;moderate estimated permeability. __ 14.0 <br /> SAND: Light olive gray(5Y 5/2);moist;100%fine to <br /> SW :;:;•;• medium grained sand; non-plastic;high estimated <br /> 15 —,—permeability. 15.0 Split spoon Samples <br /> 0 <br /> 9 1.2 Silty CLAY with Sand: Moderate olive brown(5Y 4/4); from 15'to 23' <br /> O moist;60%clay,30%silt,10%medium grained sand; collected for Bench <br /> Scale Treatability <br /> 16 CL medium plasticity;low estimated permeability. study <br /> 16 16.5 <br /> 2.2 20 SAND: Light olive gray(5Y 5/2);moist;100% medium <br /> = to coarse grained sand;non-plastic;high estimated' <br /> permeability. <br /> 207 iz @18':coarse grained sand <br /> 0 22 <br /> a 26 <br /> 46 <br /> J 16 ' <br /> 20 <br /> Continued ex age <br /> PAGE 1 OF 2 <br />