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Conestoga-Rovers&Associates CSORING / 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-12 <br /> JOB/SITE NAME JIMCO Truck Plaza DRILLING STARTED 11-Mar-10 <br /> LOCATION 1022 Frontage Road,Ripon,CA DRILLING COMPLETED 18-Mar-10 <br /> PROJECT NUMBER 161556 WELL DEVELOPMENT DATE(YIELD) 24-Mar-10(77 Gallons) <br /> DRILLER Gregg Drilling,C57#485165 GROUND SURFACE ELEVATION NA <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 56.78 ft above msl <br /> BORING DIAMETER 10.5" SCREENED INTERVALS 15 to 35 fbq <br /> LOGGED BY C.Hee DEPTH TO WATER(First Encountered) 23.00 fbg(18-Mar-10) <br /> REVIEWED BY R.Scheele,PG#6842 DEPTH TO WATER(Static) 22.74 fbg(07-Apr-10) 1 <br /> REMARKS Well constructed with circum screen,no recovery from 23.5'-25'(sand),no blow count from 29.5'-30'due to saturation <br /> Lni <br /> E 0)CL F- Uj z x vi U U <br /> CL m 0 n EL X W� e O LITHOLOGIC DESCRIPTION Z H WELL DIAGRAM <br /> ❑ Q W 0 j �—t O W <br /> a U U) C7 U U <br /> ASPHALT: 6 inches thick. 0.5 LI�LJ <br /> SAND with Slit: Grayish brown(5YR 3/2);dry;10%silt, <br /> 90%fine to medium grained sand;low plasticity;high <br /> estimated permeability. <br /> SW <br /> 0.2 MW-12-4 <br /> 5 <br /> 6.0 Portland Type III <br /> Clayey,Sandy SILT: Dark yellowish brown(10YR 4/2); <br /> dry;20%clay,50%silt,30%medium to fine grained sand; <br /> ML low plasticity;low estimated permeability. <br /> 7.5 <br /> Clayey,Sandy SILT: Dark yellowish brown(10YR 4/2); 4"dlam.,Schedule <br /> 15%clay,50%silt,35%fine to medium grained sand; 40 PVC <br /> medium plasticity;low estimated permeability. <br /> @ 8.5',Moderate yellowish brown(10YR 5/4):70%silt, <br /> 0 30%fine to medium grained sand;low plasticity;moderate ! <br /> 1.0 MW-12-10 <br /> estimated permeability. <br /> Q 1�3 <br /> 3 1 <br /> LL <br /> W <br /> O I <br /> I <br /> ' I <br /> ML Bentonite Seat <br /> J <br /> t <br /> I <br /> a <br /> I <br /> 0.0MW-1254 <br /> -15 <br /> { + 15 <br /> 16.0 <br /> Silty CLAY: Moderate yellowish brown(10YR 5/4);dry; <br /> stiff;80%clay,20%silt;medium plasticity;low estimated <br /> a permeability. <br /> 9 <br /> CL <br /> n 190 <br /> SAND: Light olive gray(5Y 5/2);moist;100%fine to <br /> 9 2.5 19 MW-12-20 medium grained sand;non-plastic;high estimated <br /> 20 <br /> Continued ex age <br /> PAGE 1 OF 2 <br />