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' LITHOLOGIC LOG BORING No. STK-1 Logged By:Jennifer Gruda Date Started:1019/07 Client:PG&E ' Checked By:Rick McCartney Date Completed:10/9/07 site:Stockton A Substation Driller:Precision Sampling/Ernesto Northing:- Location:Stockton,California Drilling Method:Hand Auger(0-5 ft)/Direct Push(5 ft-Total Depth) Easting:- Project No.:PGE-1035-400 Sampling Method:Hand Auger Bucket/2"x 5'core barrel Elevation:- Sampling Interval:Continuous Boring Depth:10 Feet Page: 1 of 1 ' r E m c ? G o t y DESCRIPTION x Sample I.D. o o u U w t re rn n woo ' 0- Concrete IT'Thick) SILTY SAND,grayish brown,dry to slightly moist,loose to medium ' STK-1-1.0 0 SM dense,medium-grained,some orange brick%i' to 2",slight petroleum odor. Sample STK-1-1.0 collected from 1 —1.25 feet bgs. 2 . CL __________________ / Lean CLAY,grayish brown,slightly moist,medium stiff,medium to high plasticity,little sand,petroleum(diesel-like)odor. ' 4 / At 4.5 feet,becomes dry,medium plasticity,trace sand,slight petroleum odor. ------ __________________________________________ STK-1-5.0 _ SP-SC Poorly graded SAND with CLAY,grayish brown,dry,medium dense,fine-to medium-grained,slight petroleum odor. Sample STK-1-5.0 collected from 5—5.25 feet bgs. 5 5 CL Lean CLAY,dark yellowish brown,dry,medium stiff,low plasticity, slight petroleum odor. a / ' 2 / At 9 feet,becomes soft,slightly moist. Sample STK-1-9.5 collected from 9.5—10 feet bgs. STK-1-9.5 At 10 feet,becomes dry,stiff. to- 12- 14- Notes: 01214Notes:Boring completed to 10 feet bgs.Groundwater was not encountered.Borehole backfilled with neat cement from total depth to TERRA PACIFIC GROUP surface.Surface repaired to match surroundings. ' EnuimnmeMxi Engineering,Consulgng,and Construction