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PROJECT: POMBO PROPERTY Log of Boring No. GMX-30 <br /> Tracy, California 9 <br /> BORING LOCATION: West Side Irrigation District ELEVATION AND DATUM: <br /> Not surveyed: datum is ground surface <br /> DRILLING CONTRACTOR: Precision Sampling Incorporated j DATE STARTED: . DATE FINISHED: <br /> 10/12/00 10/12/00 <br /> DRILLING METHOD: Direct push TOTAL DEPTH(ft.): MEASURING POINT. <br /> 15.0 Ground surface <br /> DRIW NG EQUIPMENT: XD-3 DEPTH TO WATER(e.) FIRST COMPL.11.75 NA <br /> SAMPLING METHOD: Envirccore sampling system[3'x 1 5M'l LOGGar Bv: <br /> HAMMER WEIGHT: NA DROP: NA RESPONSIBLE PROFESSIONAL'. REG.NO. <br /> G. Foote 5044 <br /> SAMPLES ct - _I. DESCRIPTION <br /> a ml j o g NAME(USGS): color,moist %Ey wt,pleat deStructure.y,Structure. REMARKS <br /> a3 cementation, me <br /> o I E Z q 1 3 LL o w = mealion,react.vNiCl,Seo.ir <br /> ur to m a Surface Elevation: Nosurveyed <br /> 0 SANDY LEAN CLAY(CL): dark grayish brown (10YR 42), <br /> moist.70%free. 30%fine sand,low plasticity,firm to hard OVM=Thermo <br /> 1 0 - Environmental <br /> Instruments Model 5808 <br /> LEAN CLAY(CL): dark brown (IOYR 3/3),moist,90%fines, PID, calibrated with 100 <br /> 2 1D%fine sand,medium plasticity,fine ppm isobmetyne standartl. <br /> 0 <br /> 3 <br /> Sample interval O'to 1.5' <br /> 4 0 - bgs collected with split <br /> spoon drive sampler. <br /> 5 - <br /> 0 Thrace iron Ovide veinlets in microfractures <br /> B 0 T soft — <br /> 7 0 LEAN CLAY with SANDCL <br /> ( ) yellowish brown (70YR 5/4), Grab groundwater sample <br /> a mist,80%fines,2D%fine sand low plasticity,firm - GMX-301000 collected <br /> S _ through 5'of 1'OD Sch. <br /> u 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 /> 10 surface seal. <br /> 0 <br /> CLAYEY SAND(SC): yellowish brown (10YR 5/6),moist 80% <br /> 11 0 fir sand,20%low plasticity fines <br /> 12 T wet <br /> 0 POORLY GRADED SAND with CLAY(SP-SC):wet Borehole destroyed using <br /> - Type 1-II neat cement <br /> 13 _ grout placed from total <br /> M10, depth toground surface <br /> EALN CLAY(CL): yellowish brown (1OYR 4/6),moist,90% - with a berms pipe. <br /> 14fines. 1 D%fir sand.soft Bottom of boring at 15.0 feet <br /> 5 <br /> oauaaev laar.vml <br /> Geomatrix Consultants l ProjectNo.6447.003.p Page 1 m 1 <br />