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' ENVIRONMENTAL ASSESSORS, INC. <br /> BORING LAG PAGE _�_ OF <br /> MW20 <br /> PROJECT NO; PROJECT NAME CALTRANS SHOP 10, STOCKTON SITE LOCATION STOCKTON, CA <br /> 0071-05 0140001 <br /> LOGGED BY DRILL CO DRILLER R O MALIA DRILL RIG Mobile Drill BORING NO <br /> Norman Sacro/ Ramesh VALLEY WELL DRILLING B-61 MW 20 <br /> J Shah <br /> DATE DRILLED BORING ELEV REF/DATUM 1 BORING, DIAMETER DRIVE WEIGHT <br />' <br /> 10-1993 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 1NG <br /> DESCRIPTION (PPM) <br /> LITHOLOGY, COLOR, GRAIN SIZE, SORTING/GRADING, DENSITY, <br />' HARDNESS, MOISTURE <br /> -0 1030 No asphalt/concrete pavement Dirt surface 10 <br /> - 15---- 48 11 1101 <br /> _5 5-- 9 1818 11 15 CL Dark brown very stiff CLAY with trace sand, moist 02 <br /> 101 10-- 9 1226 1130 ML Light brown medium stiff clayey SILT moist 03 <br /> 11 0 in <br /> brea <br />' thing <br /> zone <br /> 15 15 4512 11 45 CL/ML Light brown silty CLAY with trace sand and gravel, moist 15 <br /> Light brown medium stiff clayey SILT with some sand and trace <br />' 20 20----- 12 23 28 1239 1 ML gravel mast 25 <br />' 25 <br /> -25 1 25-- 9 12 17 1245 CL Light brown medium stiff, moist silty CLAY <br /> 30 30 -- 13 20 25 100 CL Grayish brown silty CLAY moist 20 <br /> 35 35 -- 14-2627 1 16 ML Reddish brown SILT with fine sand, moist 20 <br /> ' 12 89/71 51 1 L <br />