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PORT OF STOCKTON BORING NO. 85-4 1 <br /> Stockton, California <br /> BORING LOCATION DATE STARTED DATE FINISHED <br /> Site 5260--ft. N., 10—ft. E. of int. Roads 21 C N 8/5/98 8/5/98 <br /> DRILLING AGENCY NORTHING EASTING ELEVATION <br /> Fisch Environmental Exploration Services I I Grade <br /> DRILLING METHOD BORING TOTAL DEPTH FINAL STATUS <br /> GeoProbe 21 ft. Grouted <br /> DRILLING EGUIPMENT DEPTH TO FIRST i COMPL. 124 HRS. <br /> GH-40 WATER NA NA NA <br /> SAMPLING METHOD LOGGED BY <br /> Core Calvin P. Erdman <br /> SAMPLER TYPE RESPONSIBLE PROFESSIONAL REG.NO. <br /> Large—bore Calvin P. Erdman, R.G. 6732 <br /> o eSo o QESCRIPTION nW REMARKS <br /> W_ U ipZ T E <br /> m U for further details <br /> Drive to 4-ft. to collect first targeted core sample,no cuttings <br /> 2- <br /> 4 <br /> 4 CLAY (CL):brown (IOYR 4/3),mostly clay,little slit,tr.-few v. f. Cr. PID-5-7 ppm,headspace <br /> sand,stiff,sl. moist,no product odor boring T <br /> I' <br /> 6 <br /> r <br /> 8 ------------------------------------------------- <br /> SILTY CLAY (CL):brown (IOYR 5/3),mostly clay,little-some slit. PID-0 ppm, soil core sample <br /> stiff,no product odor (headspace baggie) <br /> 10 Soil sample S-019 from 10.0 <br /> S-M to IO5-ft. bgs <br /> 12 I <br /> -----------------------------------------------__ <br /> 14 CLAYEY SILT (ML):yellowish brown (10YR 5/4),mostly slit,some clay. PID-3 ppm,headspace <br /> tr. v. f. gr. sand,moist,stiff,no product odor boring <br /> PID-0 ppm,soil core sample <br /> S_= (headspace baggle) T <br /> 16 So its ample b902D frem I5.0 <br /> ------------------------------------------------- Contact based on drillers T <br /> SAND (SP)9 notation of Increased drive <br /> 18 ------- <br /> -- pressure <br /> PID-2-5 ppm,headspace T <br /> boring <br /> Project No. Figure No. `T <br /> 98117 <br />