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' MONITORING WELL LOG <br /> PROJECT NAME San Joaquin County Parking Garage LOG OF WELL MW-4 <br /> SITE ADDRESS 130 N Hunter Street BOREHOLE DIAM (in ) 8 <br /> Stockton California WELL DIAM in 2 <br /> DATE STARTED July 12 2002 DRILLER/COMPANY Eddie Mitchell <br /> DATE COMPLETED July 12,2002 Mitchell Drilling(C-57#672617) <br /> DRILLING METHOD Hollow-stem Auger GEOLOGIST/ENGINEER Joseph Ramage R G #5856 <br /> Split-spoon Sampler Ramage Environmental <br /> O c <br /> L v N <br /> aLi <br /> LL- <br /> _ _j LJ U] W <br /> m ifl Q. 0- m U) C F <br /> a- IXw U _V o <br /> a LU <br /> n m E can z Z) DESCRIPTION °' <br /> 0 NA Concrete surface Hand dug first 5-feet 0 <br /> 5 00 CL SILTY CLAY Dark brown,dry,no petroleum odor 5 <br /> i <br /> 10 01 ML SILT Light orange-tan,dry,no petroleum odor 10 <br /> 15 00 CL SILTY CLAY Light tan,dry,no petroleum odor 15 <br /> i <br /> 20 00 MW4-20 ML CLAYEY SILT Light orange-tan,dry,no petroleum odor 20 <br /> Static groundwater at 23 07 feet bgs on 7124/02 <br /> 25 00 MW4-25 CL SILTY CLAY Medium beige,moist,no petroleum odor 25 <br /> Encountered saturated soil at 29 0 feet bgs on 7112102 <br /> 30 00 MW4-30 ML CLAYEY SILT Medium beige,moist,no petroleum odor 30 <br /> 35 00 MW4-35 CL SILTY CLAY Medium brown,moist no petroleum odor 35 <br /> Terminated boring at 35 ft Installed 2-in diameter pvc monitoring well <br /> Well Screen(0 020-in slot)from 15 to 35 fl Filter pack of#3 Sand from 13 to 35 ft <br /> Hydrated bentonite chips from 11 to 13 ft Neat cement from surface to 11 ft <br /> 40 Completed well with expansion cap and flush-mount street box 40 <br /> Page 1 of 1 <br /> I <br />