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;PROJECT: POMBO PROPERTY Log of Boring No. GMX-31 <br /> Tracy, California <br /> ,wr BORING LOCATION: West Side Irrigation District i ELEVATION AND DATUM: <br /> Not surveyed; datum is ground surface <br /> I DATE STARTED: DATE FINISHED: <br /> I DRILLING CONTRACTOR: Precision Sampling Incorporated = 10/12/00 i 10/12/00 <br /> i TOTAL DEPTH(ft.): 'MEASURING POINT. <br /> DRILLING METHOD: Direct push 13.0 'Ground surface <br /> FIRST <br /> DRILLING EQUIPMENT: X©-3 DEPTH TO WATER(ft.) 10.5 NA NA <br /> SAMPLING METHOD: Enviro-Core sampling System(3'X.1 5/8"1 'LOGGED BY: <br /> I T. Loar <br /> HAMMER WEIGHT: NA s DROP: NA I RESPONSIBLE PROFESSIONAL: I REG.NO. <br /> I G. Foote 5044 <br /> SAMPLES O DESCRIPTION <br /> I -- > o E j NAME(USCS): color,moist,%by wt.,plant.density,structure, REMARKS <br /> U.12 r E a E )0 8 O i cementation,react,w/HCI,geo.inter. <br /> o . IM ro mu. <br /> I i Surface Elevation: Not surveyedl <br /> ' ! SANDY LEAN CLAY(CL): very dark grayish brown (10YR I <br /> ! 3/2),moist,70%fines,30%fine sand, low plasticity,firm <br /> o OVM=Thermo I <br /> 1 Environmental <br /> 0 Instruments Model 58OB <br /> { _ PID,calibrated with 100 <br /> 2-1 0 ppm isobutelyne standard. <br /> 1 <br /> 3 I - <br /> 4 I 0 j Sample interval 0'to 1.5' <br /> 0 F LEAN CLAY with SAND(CL): dark brown (10YR 313),moist, bgs collected with split <br /> 80%fines.20%fine sand,medium plasticity,firm _ spoon drive sampler. <br /> o - <br /> trace red iron oxide veinlets along microfractures and root II <br /> 7� 0 �—spaces_______ __ _ -- I_ <br /> f SANDY LEAN CLAY(CL}: yellowish brown (10YR 5/4},moist, Grab groundwater sample <br /> 70%fines,30%fine sand,low plasticity,firm - GMX-31-1000 collected <br /> 0through 5'of 1"OD Sch. <br /> $ 40 PVC screen(0.01"slot <br /> - size)placed in borehole <br /> 5-{ 0 <br /> (- from 8'to 13'bgs. Drive <br /> casing 2 L_ to 10'brgs to manta n,3' <br /> 10 I 0 i soft II surface seal. <br /> f <br /> CLAYEY SAND(SC): darts yellowish brown (10YR 414),wet, – <br /> 11 70%fine sand,30%low plasticity fines,soft I- <br /> 12� POORLY GRADED SAND with CLAY(SP-SC) Y Borehole destroyed using <br /> I- Type 1-II neat cement <br /> 13I i_ grout placed from total ' <br /> I Bottom of boring at 13.0 feet depth to ground surface <br /> I ( with a tremie pipe. <br /> 14 <br /> 15-.. f j <br /> oacaatEvlaty.�, , <br /> GeOmatriX COnSUltant5 i Project No.6447 003.0 C Page 1 of 1 <br />