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PROJECT: POMBO PROPERTY Log of Boring No. GMX-31 <br /> Tracy, Caldomia - <br /> BORING LOCATION West Side Irrigation DistrictELEVATION AND DATUM' <br /> Not surveyed; datum is ground surface <br /> DRILLING CONTRACTOR: Precision Sampling Incorporated !DATE STARTED: DATE FINISHED: <br /> 10/12/00 10/12/00 <br /> TOTAL DEPTH(R): MEASURING POINT. <br /> GRILLING METHOD: DlfeCt push 13.0 Ground surface <br /> DRILLING EQUIPMENT: XD-3 DEPTH TO WATER(8.) 70 5T COAMPL. <br /> SAMPLING METHOD: Enviro-Core sampling system [3k 1 5/8"1 LOGGED BY. " <br /> T Loar <br /> RESPONSIBLE PROFESSIONAL: j REG.NO, <br /> HAMMER WEIGHT: NA DROP: NA G. Foote 5044 <br /> SAMPLES I O DESCRIPTION <br /> a O n O c 'a_ S E NAME(USCS): color,moist,%by M, Plast.density,studum REMARKS <br /> E E o O cementation,reed.w/HCI.Seo.inter. <br /> O y N R LL <br /> w w m z Surface Elevation: Notsurveyed <br /> ! I SANDY LEAN CLAY(CL): very dark grayish brown (1 OYR <br /> 0 32),moist,701/6fines,30%fine sand, low plasticity,firm OVM =Thermo <br /> 1 0 r Environmental <br /> _ Instruments Model 5808 <br /> PID,calibrated with 100 <br /> 2 0 - ppm isobutelyne standard. 1 <br /> 3 - <br /> 0 Sample interval 9 to 1.5' <br /> 4 --- ———— — ——— - bgs collected with split <br /> LEAN CLAY with SAND(CL): dark brown (tOYR 3/3), moist, spoon drive sampler. <br /> 0 80%fines,20%fine sand, medium plasticity,firm <br /> 5 - <br /> s <br /> 6 - <br /> Ttrace red iron oxide veinlets along microfractures and root _ <br /> o spaces <br /> 7 — - ------- <br /> SANDY LEAN CLAY(CL): yellowish brown (10YR 514),moist, Grab groundwater sample <br /> 0 70%fines,3D%fine sand.low plasticity,firm GMX-31-1000 collected <br /> B _ through 5'of l'OD Sch. <br /> 40 PVC screen(0.01' slot <br /> 0 - sae)placed in borehole <br /> 0 e from 8'to 13'bgs. Drive <br /> casing retracted from 13' <br /> 0 to 10'bgs to maintain <br /> 10 T soh - surface seal. <br /> CLAYEY SAND (SC): dark yellowish brown (WYR 4/4),wet, <br /> 11 70%fine sand,30%low plasticity fines, soft <br /> 12 <br /> POORLY GRADED SAND with CLAY(SP-SC) Borehole destroyed using <br /> Type 1-II neat cement <br /> 13 _ grout placed from total <br /> Bottom of boring at 13.0 Feet depth to ground surtace <br /> = with a tremie pipe. <br /> 14 <br /> I j <br /> arxewsvtesv.s'eN <br /> Geomatrix Consultants I Project Na.6417.003.0 Page/Of t <br />