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ENVIRONMENTAL ASSESSORS, INC. <br /> BORING LOG PAGE _1_ OF <br /> MW24 <br /> PROJECT NO PROJECT NAME CALTRANS SHOP 10, STOCKTON SITE;LOCATION STOCKTON, CA <br /> 0071-05 01 D001 <br /> LOGGED BY DRILL CO DRILLER R O MALTA DRILL RIG Mobile Drill BORING NO <br /> Norman Sacro VALLEY WELL DRILLING 661 MW 24 <br /> DATE DRILLED BORING ELEV REE/DATUM BORING DIAMETER DRIVE WEIGHT <br /> 102021-93 1 1 10" 140 lbs/30" <br /> DEPTH SAMPLE BLOWS/ TIME LITHO- This boring log applies only at the specific boring location and at the FID/PID <br /> (FT) LOCA- 6" LOGY time the boring was drilled The descriptions on this log are not VAPOR <br /> TION U S C S warranted to be representative of subsurface conditions at other READ <br /> locations or times ING <br /> DESCRIPTION (PPM) <br /> LITHOLOGY, COLOR, GRAIN SIZE, SORTING/GRADING, DENSITY, <br /> HARDNESS, MOISTURE <br /> 0 --- 230 CH Dark gray stiff CLAY, moist, high plasticity 26 <br /> 15 - 250 <br /> " 24 <br /> -5 5- - 45-13 305 CL Gray CLAY with sand and gravel, moist <br /> 0 in <br /> - — breathe <br /> ng <br /> zone <br /> 10 10 - 9 45 35 315 CL Gray, medium stiff silty CLAY, dry 40 <br /> 15 15---- 9 1525 330 CL Grayish brown silty CLAY, dry to moist 50 <br /> 30 <br /> 20 20--- 10 20 22 345 CL Grayish brown, medium stiff, silty CLAY, dry to moist <br /> 25 25 7-11 16 356 ML Light brown medium stiff clayey SILT moist 36 <br /> I <br /> 30 30---- 10 17 23 410 CL <br /> Grayish brown with specks of while silty CLAY,with some sand, moist 40 <br /> 35 35--- 7-11 15 423 ML Reddish brown medium stiff clayey SILT, moist so <br /> 16 R9/71 51 1 L <br />