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ENVIRONMENTAL ASSESSORS, INC. <br /> BORING LOG PAGE 1 OF 2 <br /> MW16 - - <br /> PROJECT NO PROJECT NAME CALTRANS SHOP 10 STOCKTON SITE LOCATION STOCKTON CA <br /> 0071.05-01-0001 <br /> LOGGED BY DRILL CO DRILLER R O MALIA DRILL RIG Mobile Drill BORING NO <br /> Ramesh Shah VALLEY WELL DRILLING &81 MW-16 <br /> DATE DRILLED BORING ELEV REF/DATUM BORING DIAMETER DRIVE WEIGHT <br /> 10-21,22-93 10" 140 lbs/30" <br /> DEPTH SAMPLE TIME BLOWS/ 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 <br /> 15 - 210 4510 CH Dark black very stiff, CLAY high plasticity, moist 00 <br /> -5 5 — 220 4 5 8 CL Brown stiff CLAY medium, plasticity dry 04 <br /> Light brawn medium stiff CLAY with little silt, medium plasticity,dry 04 <br /> 10 10 --- 235 7-15 18 CL <br /> 1 15 15 -- 245 579 CL Same as above 04 <br /> 1 20 20---- 3 00 8-11 15 ML Light brown medium stiff clayey SILT with little sand, dry 04 <br />' -25 25-- - 3111 13 15 17 CL Light brown medium stiff silty CLAY, low plasticity,dry 00 <br />' -30 30----- 320 B-1015 CL Light brown medium stiff silty CLAY, low plasticity, dry 02 <br /> 35 35 330 7 12-15 CL Brown medium stiff clayey SILT,dry 02 <br /> -40 <br /> 40- - 410 10 20 25 CL Brown medium stiff silty CLAY, low plasticity,dry 06 <br />' 19 89/71 51 1 L <br />