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a Am <br /> ' CHEVRON PROPERTY AT 990 BEECHNUT AVE. Lo of Boring - <br /> Tracy, California g g No. SB 2 <br /> ' BORING LOCATION DATE STARTED DATE FINISHED <br /> SE corner of parcel 16 August 1996 16 August 1996 <br /> DRILLING CONTRACTOR GROUND SURFACE ELEVATION AND DATUM <br /> Precision Sampling Incorporated <br /> ' DRILLING METHOD BORING TOTAL DEPTH FINAL STATUS <br /> Direct push core 8.5 ft. I Grouted <br /> DRILLING EQUIPMENT DEPTH TO FIRST COMPL. 24 HR. <br /> MD-1 Sampling rig WATERft. ft. ft. <br /> ' SAMPLING METHOD LOGGED BY <br /> Enviro-Core dual tube system Jeffrey S. Pyle <br /> SAMPLER TYPE RESPONSIBLE PROFESSIONAL REG. N0. <br /> 1 5/8-inch X 3-feet split barrel Dawn A. Zemo, C.E.G. 1747 <br /> Z i M E L p DESCRIPTION <br /> a 0 0 0 3 0 5 a. +5 Q ui REMARKS <br /> W Z 4 O a. •4 -+ NAME (USCS Symbol): color, moisture, X. bW <br /> N -4 J 0 weight, plast., consistency,structure, W <br /> cementation react. w/HCL eo. inter. <br /> SILT with SAND (ML):grayish brown (2.5Y 5/2),dry, -85%fines, <br /> -15%fine sand, trace well-rounded gravel, low to medium plasticity, <br /> soft <br /> ' 2-1 0 <br /> ' occasional gray/black <br /> inclusions from 1.5 to 2 feet <br /> 2 2-2 0 LEAN CLAY with SAND (CL):very dark grayish brown (2.5Y 3/2), <br /> ' moist, -80%fines, -20%fine sand,stiff, moderate iron oxide <br /> staining abundant gray/black <br /> inclusions from 2.3 to 8.5 <br /> feet <br /> ' 4 LEAN CLAY (CL): dark grayish brown (2.5Y 4/2), moist, -95% <br /> fines, -5% fine sand, medium plasticity,stiff <br /> 2-3 0 <br /> 6 <br /> ' 8 2-4 0 <br /> ' BOH at 8.5 feet <br /> Project No. C3769 GEOMATRIX CONSULTANTS, INC. Figure A-4 <br />