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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-17 <br /> JOB/SITE NAME JIMCO Truck Plaza DRILLING STARTED 12-Mar-10 <br /> LOCATION 1022 Frontage Road,Ripon CA DRILLING COMPLETED 17-Mar-10 <br /> PROJECT NUMBER 161556 WELL DEVELOPMENT DATE(YIELD) 24-Mar-10(80 Gallons) <br /> DRILLER Gregg Drilling,C57#485165 GROUND SURFACE ELEVATION NA <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 56.83 ft above msl <br /> BORING DIAMETER 10.5" SCREENED INTERVALS 15 to 35 fbg <br /> LOGGED BY C.Hee DEPTH TO WATER(First Encountered) 28.00 fbg(17-Mar-10) <br /> REVIEWED BY R.Scheele,PG#6842 DEPTH TO WATER(Static) 22.80 fbg(07-Apr-10) 1 <br /> REMARKS Well constructed with circum screen. No recovery from 33.5'-35'. <br /> i <br /> �m �� 0 v F m <br /> a O-J� as H� W a p LITHOLOGIC DESCRIPTION = WELL DIAGRAM <br /> a m0 'uS 0 �� pW <br /> V O <br /> ASPHALT: 6 inches thick. 0.5 LTJ i <br /> SAND: Pale brown(5YR 5/2);dry;5%silt,95%fine to I <br /> medium grained sand;low plasticity;high estimated <br /> permeability. <br /> r <br /> SW <br /> 0.9 MW-17 d <br /> 5 ; <br /> 5.8 PortlandT <br /> Sandy SILT with Clay; Pale brown brown(SYR 5/2);dry; Y°el/II <br /> ML 10%clay,70%silt,20%fine to medium grained sand;low 6.5 <br /> lasticit �low estimated emteabilit . <br /> Silty CLAY with Sand: Moderate yellowish brown(10YR <br /> 5/4);dry;60%clay,30%silt, 10%fine to medium grained <br /> o CL sand;medium plasticity;low estimated permeability. 4'diam.,Schedule <br /> m 40 PVC <br /> n <br /> ~ ________ 9.0 <br /> Silty SAND: Moderate yellowish brown(10YR 5/4); <br /> 0.0 5Mw-17-10 moist;40%silt,60%fine grained sand;low plasticity;high <br /> ,'ate to 10 estimated permeability. <br /> Lu SM <br /> a' <br /> -- _______ 11.5 <br /> SAND: Pale yellowish brown(10YR 6/2);100%medium <br /> o to coarse grained sand;non-plastic;high estimated Bentonite seal <br /> F <br /> permeability. <br /> a <br /> U <br /> SW <br /> °P 0.4 11 MW-17-15 <br /> 1315 <br /> -- __________ 16.3 <br /> Silty CLAY: Moderate yellowish brown(10YR 5/4);dry; <br /> 70%clay,30%silt;dry;low plasticity;low estimated <br /> permeability. <br /> o: <br /> g CL <br /> a <br /> c7 <br /> O <br /> J <br /> -+ 23 12 MW-17-20 <br /> 20- 20.0 <br /> on roued Next Page <br /> PAGE 1 OF 2 <br />