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Conestoga-Rovers&Associates ORING / WELL LOG <br /> 5900 Hollis Street, Suite A <br /> " A Emeryville,CA 94608 <br /> Telephone: 510-420-0700 <br /> _. Fax: 510-420-9170 <br /> CLIENT NAME Olympian JV BORING/WELL NAME MW-18 <br /> JOB/SITE NAME JIMCO Truck Plaza DRILLING STARTED 13-Mar-10 <br /> LOCATION 1022 Frontage Road,Ripon,CA DRILLING COMPLETED 15-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 i <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 58.15 ft above msl <br /> BORING DIAMETER 10.5" SCREENED INTERVALS 15 to 35 fbg <br /> LOGGED BY C.Hee DEPTH TO WATER(First Encountered) 23.50 fbg(15-Mar-10) <br /> 'REVIEWED BY R.Scheele,PG#6842 DEPTH TO WATER(Static) 24.08 fbg(07-Apr-10) Z <br /> REMARKS Limited access"Rhino"rig used,no blow counts avaliable. <br /> E rn <br /> OJ a WW vi a O LITHOLOGIC DESCRIPTION z WELL DIAGRAM <br /> a m0 < w �J 0a <br /> 0W <br /> O <br /> ASPHALT: 6 Inches thick. 0.5 L—r—LJ <br /> GRAVEL with Sand: Moderate brown(5YR 3/4);dry; <br /> •�� 5%silt, 10%fine to medium grained sand,85%gravel; <br /> GW b non-plastic;high estimated permeability. <br /> 2.0 <br /> SAND: Moderate brown(5YR 3/4);dry;100%fine to <br /> medium grained sand;high estimated permeability. <br /> SW <br /> 4.0 �. <br /> 0.4 MWA8-4 Sandy SILT: Moderate brown(5YR 3/4);dry;70%silt, <br /> 30%fine to medium grained sand;low plasticity;moderate <br /> 5 estimated permeability. <br /> I <br /> Portland Type UII . <br /> ML <br /> 0 4"diam.,Schedule <br /> 40 PVC <br /> 8.5 <br /> Silty CLAY: Dark yellowish brown(10YR 412);dry;60% <br /> clay,35%silt,5%fine grained sand;medium plasticity; <br /> o.s MW-18-10 low estimated permeability. <br /> 10 <br /> LL <br /> W <br /> 1 <br /> 0 <br /> J CL Bentonite Seal <br /> O <br /> 0 <br /> LL <br /> U <br /> @ 14':Moderate yellowish brown(10YR 5/4). <br /> '0 0.0 MW-18-15 <br /> 15.0 <br /> 15 SAND: Grayish brown(5YR 3/2);dry;100%fine to <br /> medium grained sand;non-plastic;high estimated <br /> permeability. <br /> n @18.5%as above but color change to Moderate yellowish <br /> brown(10YR 5/4); 100%fine to coarse grained sand. <br /> J <br /> MW-18-20 <br /> L <br /> 0 <br /> 20 <br /> Gontinued Nextage <br /> PAGE 1 OF 2 <br />