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i PROJECT' POMBO PROPERTY <br /> Tracy, California f Log of Boeing No. G.MX-33 <br /> ORiNG LOCATION: West guide lrrigatign District. f <br /> ELEVATION AND DATUM <br /> of surveyed, datum Is ground surface <br /> �i j DATE STARTED: ;DATE FINISHED. <br /> kDRILLING CONTRACTOR Precision>Sampling Incorporated ; 10/1 NO 4 10/13/00 <br /> DRILLING METHOD: Direct pUSll, TOTAL DEPTH(ft.):' ;MEASURING POINT:' <br /> Ground surface <br /> FIRST COMPL <br /> j DRILLING EQUIPMENT: XD-3 DEPTH TO WATER(ft.)'. 9.5 + f+1A <br /> SAMPLING METHOD: Enviro-core sampling system[3'X:1 5/8,'1 (LOGGED BY: t <br /> I <br /> T.Loar <br /> _ .RESPONSIBLEI 'PROFESSIONAL: i REG.NO <br /> GE <br /> HAMMER WEIGHT: NA I DROP: NA { 9 5044 <br /> SSAAM.PPLLE$ ' C7 DESCRIPTION" i l <br /> i F m i m (- I M� i NAME(USC'5): color,moist,%by wt.,plast.density,sttucture, a REMARKS <br /> E z 2 c 61 p In n i cementation;lead_wtHCl,goo.infer. <br /> E _ <br /> Cr <br /> Surface Elevation: Not surveyed <br /> f i SANITY LEAN CLAY(CL): very dark'grayish'brown (10Y1� i <br /> j -4j o 8/2); moist, 70°/,dines,30%fine'sand,low plasticity,firm �– 1 <br /> 1 1 J OVM=Thermo <br /> Environmental <br /> f Instruments Model 5809 j <br /> PID,ca{ibraled with 100 <br /> 2 – ppm isobutelyne:standard. <br /> LEAN CLAY with SAND(CL): dark brawn (1.OYR 3/3) moist, <br /> 4- 0 80%.fines,20%fine sand medium pEasticity,firm <br /> Grab groundwater sample <br /> 5 – GMX-33-1000 collected <br /> through 5'of 1"OD Sch. <br /> 40 PVC screen(0.01"slot <br /> fi tt T soft - size)placed in borehole <br /> + from 7'to 12'bgs. Drive <br /> – casing retracted from 12' <br /> 7 ----! -- �——— to 9'bgs to maintain <br /> o s SANDY LEAN CLAY(CL): yellowish brown (10YR 5/4).moist, surface seal. <br /> 70%fines,3t?%:fine sand_,low plasticity,hrt <br /> 1 <br /> [l 0 . <br /> i <br /> CLAYEY'SAND(5C): dark yellowish brown,'(10YR 414),wet, <br /> 10 0 70%fine sand,30%low plasticity finBs soft – <br /> POORLY GRADED SAND with CLAY SP _ <br /> Borehole destroyed using <br /> Typo 1-11 neat cement <br /> 12 grout placed from total <br /> Bottom of.boring at 12.0 feet – depth to ground surface <br /> with a tremie pipe. <br /> 13 �. <br /> i 14-� <br /> e 1 i <br /> _ OAK80Rev IRiv. <br /> j Geomatrtx Consultants Protect fVo 644;x;:003,0 Page 1 of 1 <br />