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' LITHOLOGIC LOG BORING No. STK-13 Logged By:Jason Shipe Date Started:10/10/07 Client:PG&E ' Checked By:Rick McCartney Date Completed:10/10/07 Site:Stockton A Substation Driller:Precision Sampling/Ernesto Northing:- Location:Stockton,California Drilling Method:Hand Auger(0-5 ft)/Direct Push(5 ff-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 t z E v c ? a o ar ' F Sample I.D. m c > DESCRIPTION o h « a E om o oiu m o N to ' 0- Aggregate Base(6") ,. GW STK-13-0.5 7 SP Poody graded SAND,moderate yellowish brown,slightly moist law plasticity,medium-to coarse-grained,trace fine gravel,some silt. ' 2 j --cL Sample STK-13.0.5 collected from 0.5 —1 feet bgs. AN SDY CLAY,dark yellowish brown,moist,medium plasticity,fine- s Y�7 - - to medium_grained,no odor. B / CL - ____ Lean CLAY,grayish brown,moist,stiff,trace medium-to coarse- ' grained sand,no odor. 5 / At 3 feet,becomes highly plastic,no trace medium-to coarse- grained sand. _ ___________________ 4 __ _____ g CL SILTY_ CLAY,dark yellowish brown,moist,stiff,high plasticity,no odor. ' STK-13-5.0 5 j CL Lean CLAY,grayish brown,moist,stiff,high plasticity,few medium- grained sand,no odor. / Sample STK-13-5.0 collected from 5—5.5 feet bgs. s /5 At 6 feet,becomes dark yellowish brown,no sand. ' 5 j At 7 feet,some silt. s SILTY CLAY,dark yellowish brown,low plasticity,trace medium-to ' 2 / CL / coarse-grained sand,no odor. 8 j' STK-13-e.5 10 Sample STK-13-B.5 collected from 9.5—10 feet bgs. 10 ' 12 1 t 14 ' Notes: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. ' Environmental Egineenng,Consufting,and Constructon