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Conestoga-Rove`s&Associates `'BORING / 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 BORINGIWELL NAME MW-16 <br /> JOBISITE NAME JIMCO Truck Plaza DRILLING STARTED 12-Mar-10 <br /> LOCATION __1022 Frontage Road,Ripon,CA DRILLING COMPLETED 18-Mar-10 <br /> PROJECT NUMBER 161556 WELL DEVELOPMENT DATE(YIELD) 26-Mar-10(72 Gallons) <br /> DRILLER Gregg Drilling,C57#485165 GROUND SURFACE ELEVATION NA <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 57.27 ft above ms] <br /> BORING DIAMETER 10.5" SCREENED INTERVALS 15 to 35 fbg <br /> LOGGED BY C.Hee DEPTH TO WATER(First Encountered) 25.50 fbg(18-Mar-10) <br /> REVIEWED BY R.Scheele,PG#6842 DEPTH TO WATER(Static) 23.25 fbg(07-Apr-10) 1 <br /> REMARKS Well constructed with circum screen,no recovery from 28.5'-30'. <br /> Cn <br /> o. w zz = vi V U g <br /> CL 0 j a H (L a LITHOLOGIC DESCRIPTION Z H WELL DIAGRAM <br /> FL mO Q �J OW <br /> c9 v o <br /> ASPHALT: 6 inches thick. 0.5 L"LJ <br /> SAND with Silt: Grayish brown(5YR 3/2);dry; 10%silt, <br /> 90%fine to medium grain sand;low plasticity;high <br /> estimated permeability. <br /> SM <br /> 3.5 <br /> Silty CLAY with Sand: Moderate yellowish brown(10YR <br /> 5/4);dry;50%clay,40%silt,10%fine to medium grained <br /> sand;medium plasticity;low estimated permeability. I <br /> 5 <br /> 1.1 MW-16-5 CL @5':moist <br /> Portland Type 1/11 <br /> 9 I <br /> 16 <br /> 28 6.8 <br /> Sandy SILT: Moderate yellowish brown(10YR 5/4); <br /> moist;70%silt,30%fine to medium grained sand;low <br /> plasticity;moderate estimated permeability. r'dlam.,Schedule <br /> 0 <br /> 40 PVC <br /> m <br /> C <br /> n <br /> r <br /> cv <br /> t0.9Z Mw-16-10 ML <br /> ¢ +4 10— <br /> W <br /> ❑ <br /> 'a <br /> i <br /> � i <br /> 3.7 Bentonite Seal i <br /> --- -------------------------- 12.5 l <br /> bA Silty CLAY with Sand: Dark yellowish brown(10YR 4/2); <br /> CL moist;50%clay,40%silt,10%fine to medium grained 13.5 <br /> sand;medium plasticity;moderate estimated permeability. <br /> Silty.Sandy CLAY: Dark yellowish brown(10YR 4/2); <br /> moist;40%clay,30%silt,30%medium to fine grained <br /> s ands low lasticit •moderate estimated permeability. <br /> O <br /> 38.6 12 MW-16 15— SW SAND: Pale yellowish brown 10YR 6/2);,moist; 1000 0 <br /> fine to medium grained sand;non-plastic;high estimated <br /> permeability. <br /> — --- -- — -- 16.0 <br /> Silty CLAY: Olive gray(5Y 3/2);moist;70%clay,36_ 9-/6— <br /> silt;medium plasticity;low estimated permeability. <br /> i <br /> U <br /> D <br /> a <br /> '31 <br /> CL <br /> 5.5 +g Mw-16-20 <br /> 20— <br /> Continued Nextage <br /> PAGE 1 OF 2 <br />