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Cambria Environmental Technology, Inc. BORING/WELL LOG <br /> 1144 - 65th St. <br /> Oakland, CA 94608 <br /> Telephone: (510) 420-0700 <br /> Fax: (510) 420-9170 <br /> CLIENT NAME Equiva Services LLC — BORING/WELL NAME MW-4A <br /> JOB/SITE NAME Ri on-341 DRILLING STARTED 25-Oct-99 <br /> LOCATION _ 341 Main Street,Ripon,California DRILLING COMPLETED 27-Oct-99 <br /> PROJECT NUMBER 240-0324 WELL DEVELOPMENT DATE(YIELD) NA <br /> DRILLER Greqq Drilling GROUND SURFACE ELEVATION Not Surveyed <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION NA <br /> BORING DIAMETER 12" SCREENED INTERVAL 70 to 75 ft bgs <br /> LOGGED BY B.Jakub DEPTH TO WATER(First Encountered) 35.0 ft 25-Oct-99) �z <br /> REVIEWED BY 0. RatchVe,PE DEPTH TO WATER(Static) NA 1 <br /> REMARKS Hand au ered to 4.5'b s•located behind station building. <br /> in <br /> 0 U A <br /> E O Z � CD v ¢p LITHOLOGIC DESCRIPTION r WELL DIAGRAM <br /> _ M� a w o� aJ OCL <br /> 0 UW <br /> >— 0 <br /> ASPHALT 0.5 <br /> SM Silty SAND(SM);dark brown(10 yr3/3);2%clay,43% <br /> silt,55%fine grained sand; no plasticity;medium to high 2.5 <br /> estimated permeabilitlr. _ <br /> SAND(SP);dark brown(10 yr313);damp;very loose to <br /> loose sand; 5%silt,95%fine to medium grained sand; no <br /> plasticity;high estimated permeability. <br /> 3 5 SP <br /> s <br /> <1.0 7 MW-4A 6.0' <br /> _ _ _ _ _ _ _ _ _ _ _ _ _ 7.5 <br /> SillyA.D N.D(SM);dark brown(10 yr3/3); damp; loose <br /> sand;2%clay, 18%silt,80%fine to medium grained <br /> sand; medium to high estimated permeability. <br /> <1.0 10 MW-4A 10 SM <br /> 10.0' <br /> _ 12.5 <br /> _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ <br /> AND(SP);yellow brown(10y 514);damp;loose sand; <br /> 15%silt,851/.fine grained sand;no plasticity;high <br /> estimated permeability. <br /> <1.0 13 MW-4A L-15— SP <br /> 17.5 <br /> Silty SAND(SM);dark brown(10 yr3/3);damp;loose <br /> sand; 15%silt,85%fine to medium grained sand;medium <br /> $ to high estimated permeability. <br /> a <1.0 s MW-4A 20 <br /> 20.0' <br /> a <br /> LL <br /> 0 <br /> J <br /> 7 <br /> ¢ Y <br /> p 15 M 25 SM @ 25'-mottled yellow brown;loose to medium dense <br /> a 25.05.0'' sand. <br /> t� <br /> z <br /> 0 <br /> a <br /> i c <br /> z <1.0 1` MW-4A 30 <br /> Portland Type <br /> ca 30.0' <br /> ex e.� aanu nieuiun ym„ev rrnn num w.a., w.n..v,r..,. <br /> z dense sand;moist. _ _ _ _ _ _ _ 32.5 <br /> 0 SAND(SW);yellow brown(10 y5/4);wet;medium <br /> dense sand; 3%silt, 97%medium grained sand;no <br /> 1u plasticity;high estimated permeability. <br /> s „ 35— <br /> L <br /> 5 <br /> J <br /> 1 <br /> Continued Next Page PAGE 1 OF 2 <br />