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Conestoga-Rovers&&Associates BORING / WELL LOG <br /> 5900 Hollis Street, Suite A <br /> Emeryville,CA 94608 <br /> Telephone: 510-420-0700 <br /> Fax: 510-420-9170 <br /> CLIENT NAME Olympian JV BORING/WELL NAME MW-13 <br /> JOB/SITE NAME JIMCO Truck Plaza DRILLING STARTED 11-Mar-10 <br /> I <br /> LOCATION 1022 Frontage Road,Ripon,CA DRILLING COMPLETED 16-Mar-10 <br /> PROJECT NUMBER 161556 WELL DEVELOPMENT DATE(YIELD) 24-Mar-10(70 Gallons) <br /> DRILLER Gregg Drilling,C57#485165 GROUND SURFACE ELEVATION NA <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 57.82 ft above msl <br /> BORING DIAMETER 10.5" SCREENED INTERVALS 15 to 35 fbg <br /> LOGGED BY C.Hee DEPTH TO WATER(First Encountered) 30.00 fbg(16-Mar-10) Q <br /> REVIEWED BY R.Scheele,PG#6842 DEPTH TO WATER(Static) 23.80 fbg(07-Apr-10) 1 <br /> REMARKS Well const.with circum screen,Soil samples from 15'-23'utilized for Bench Scale Treatbility Study,Insufficient recovery from 33. <br /> E <br /> _ H W Z = to U U <br /> S O z a X� W a LITHOLOGIC DESCRIPTION Z WELL DIAGRAM <br /> O m0 Q W O zi �J 0W <br /> n U N 0 U <br /> ASPHALT. 1'thick. (sJ <br /> 1.0 <br /> SAND with Slit: Dusky brown(5YR 2/2);dry;10%silt, <br /> 90%fine to coarse grained sand;low plasticity;high <br /> estimated permeability. <br /> 0.9 <br /> I <br /> 0.6 MW-134 SW . i <br /> i <br /> 5 <br /> Portland Type 1/11 I <br /> , <br /> i <br /> I <br /> 7.5 <br /> 0.9 Clavey.Sandy SILT: Dark yellowish brown(10 YR 4/2); 4"diam.,Schedule <br /> dry;20%clay,50%silt,30%fine to medium grained sand; 40 PVC I <br /> ML low plasticity;moderate estimated permeability. <br /> n 4.3 - <br /> o --- — — — — ---- 9.3 I <br /> e Sandy,Silty CLAY: Dark yellowish brown;-- dry;60% <br /> Q13 12 MW-13-10 10 clay,25%silt, 15%fine to medium grained sand;low <br /> LL plasticity;low estimated permeability. <br /> 0 <br /> e <br /> tY <br /> } Bentonite Seal <br /> J <br /> 9 <br /> CL <br /> LL <br /> 0 <br /> U <br /> t° <br /> t <br /> 15 from 1it 5'to 2V samples <br /> N <br /> -� <br /> collected for Bench <br /> _________________ 16.0 Scale Treatablity <br /> Silty SAND: Moderate yellowish brown(10YR 5/4);dry; study <br /> to SM 30%silt,70%fine to medium grained sand;non-plastic; <br /> 17.0 <br /> 20 moderate estimated permeability. <br /> = 13.7 za Silty CLAY: Dark yellowish brown(10YR 4/2);moist; <br /> 70%clay,30%silt;medium plasticity;low estimated <br /> E 1 permeability. <br /> zs CL <br /> o za <br /> a 19.0 ; <br /> o;`•.:.< Sllty SAND with Clay: Grayish olive(10YR 4/2);10% <br /> clay,309/c silt,60%fine to medium grained sand;low 20.0 <br /> 20 <br /> Continued ex age <br /> PAGE 1 OF 2 <br />