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PROJECT: POMSO PROPERTY La of Boring No. GMX-30 <br /> Tracy, California 9 <br /> BORING LOCATION: West Side litigation District j ELEVATION AND DATUM: <br /> I Not surveyed; datum is ground surface <br /> ` i DATE STARTED: DATE FINISHED: <br /> i DRILLING CONTRACTOR: Precision Sampling Incorporated i 10/12/00 110/12/00 <br /> 1 <br /> i TOTAL DEPTH(ft): MEASURING POINT: <br /> DRILLING METHOD: Direct push 15.0 <br /> Ground surface <br /> FIRST COMPl. <br /> i DRILLING EQUIPMENT: XD-3 DEPTH TO WATER(ft.) <br /> : 11.75 NA <br /> SAMPLING METHOD: Enviro-Core sampling system[3'X 1 5/S"] LOGGED 8Y' <br /> T. Loar _ <br /> HAMMER WEIGHT: NA DROP: NA RESPONSIBLE PROFESSIONAL: i REG.NO. <br /> G. Foote 5044 <br /> SAMPLES i Lry DESCRIPTION 1 I <br /> i-oa -a g <br /> Z NAME(USCS) color,moist,%by wt.,plass.density,structure, I REMARKS <br /> LUi:L E Z rn o Q n cementation,react.wMCI,geo.inter. <br /> LL <br /> Surface Elevation: Not surveyed <br /> 0 SANDY LEAN CLAY(CL): dark grayish brown (10YR 4/2), <br /> 1 J moist, 70%fines,30%fine sand,low plasticity,firm to hard pVM=Thermo <br /> �( f 0 Environmental <br /> _ Instruments Model 580E <br /> LEAN CLAY(CL): dark brown (10YR 3/3),moist,90%fines, PID.calibrated with 100 <br /> 2 10%fine sand,medium plasticity,firm - ppm isobutelyne standard. <br /> 0 <br /> 3 <br /> Sample interval 0'to 1.5' <br /> 4 0 - bgs collected with split <br /> I - <br /> spoon drive sampler. <br /> 5 <br /> 0 T trace iron oxide veinlets in microfractures <br /> 6 _ <br /> i 0 soft <br /> I <br /> 7 <br /> 0 0 LEAN CLAY with SAND(CL): yellowish brown (IGYR 514), Grab groundwater sample <br /> moist,80%fines,20%fine sand,low plasticity,firm - GMX.-30-1000 collected <br /> I g 2x - through 5'of 1"OD Sch. <br /> r, 0 40 PVC screen(0.01"slot <br /> size)placed in borehole <br /> 9 from 15'to 10'bgs. Drive <br /> casing retracted from 15' <br /> 0 - to 11'bgs to maintain <br /> j <br /> 10 surface seal. <br /> _ <br /> 0 <br /> CLAYEY SAND(SC): yellowish brown (10YR 5/6),moist,80% <br /> 11- 0 fine sand,20%low plasticity fines - <br /> Twet <br /> 12 i 0 GRADED SAND with CLAY(SP-SC):wet' POORLY GRBorehole destroyed using <br /> - Type 1-11 neat cement <br /> ( <br /> 13 _ grout placed from total( 0 depth to ground surface <br /> LEAN CLAY(CL): yellowish brown (10YR 4/6),moist,90% - with a tremie pipe. <br /> 14 0 <br /> fines, 10%fine sand,soft <br /> i ' � ! <br /> i I 0 1 Bottom of boring at 15.0 feet <br /> � 15 1 1 <br /> ���faEv.lrOo} i <br /> ___� Geot1'ldtrlX COn5ultants F Prosect No.6447.403:0 I Page t of t <br />