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PORT OF STOCKTON t BORING NO. B5-=5 Stockton, California BORING LOCATION DATE STARTED DATE FINISHED Site 5--260—ft. N., 10—ft. E. of int. Roads 21 & N 8/5/98 8/5/98 DRILLING AGENCY NORTHING EASTING ELEVATION Fisch Environmental Exploration Services Grade DRILLING METHOD BORING TOTAL DEPTH FINAL STATUS GeoProbe 21 ft. Grouted DRILLING EQUIPMENT' DEPTH TO i FIRST COMPL. i 24E GH-40 1. WATER NA NA NA SAMPLING METHOD LOGGED BY Core Calvin P. Erdman SAMPLER TYPE RESPONSIBLE PROFESSIONAL REG.NO. Large—bore Calvin P. Erdman, R.G. 6732 w o o a c o o DESCRIPTION REMARKS CL_ aoz o a as E w ¢ N m U for further details Drive to 4-ft. to collect first targeted core sample,no cuttings r F � 2- 4 4 CLAY (CL):dk. gray (N4/),mostly clay, tr, v, f. sand&slit, sl. Mod.-strong product odor In moist,plast.,weak-mod. product odor,color likely due to discolora- borehole S-014 tion from petroleum products Soil sample S-014 from 5.0 to 5.5-ft. bgs 6 PID-150 ppm,headspace boring PID-7-10 ppm,soil core ro/// sample (headspace baggie) ' 8 ------------------------------------------------- No soil discoloration by: 1 SILTY CLAY (CL):yellowish brown (10YR 5/4),mostly clay,some slit, 9-ft. bgs sl.-mod. plasL,dry-sl. moist,v. stiff,weak-mod. product odor PID-150 ppm,headspace boring 10 S-015 PID-0 ppm,soil core sample (headspace baggle) Soil sample S-015 from 10.0 to 10.5-ft. bps 12 water level measured @ 11.3-ft. bgs 14 cont. SILTY CLAY (CL):yellowish brown 0QYR 5/0),mostly day, PID-BO ppm, headspace little silt,v. moist,no product odor boring,no product odor in sample S-M Soil sample S-OIB from 15.0 to 15.5-ft. bgs V// ---------------------------------=--------------- Contact based on driller's SAND (SP)4 notation of increased drive pressure Project No. Figure No. 98117