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LOG OF EXPLORATORY BORING <br /> PROJECT NUMBER 939-02.06 BORING NO. G-1 <br /> PROJECT NAME S.J. County Landfill Development Site PAGE 5 OF 9 <br /> BY BAB DATE 6/22-23/87 SURFACE ELEV. 117.07 <br /> POCKET PENETRA- LITHO- <br /> TORVANE PENETRO- TIONz a W Z Uj <br /> N <br /> GRAPHIC <br /> DESCRIPTION <br /> METER > a <br /> (TSF) (TSF) <br /> (Blows/ <br /> _j G COLUMN <br /> 80 ML CLAYEY SILT (continued) . <br /> 85 <br /> SANDY SILT, pale brown (10YR, 6/3) ; <br /> 20-25% very fine- to medium-grained <br /> sand; very clayey; slightly damp. <br /> , <br /> SILT, brown (10YR, 5/3) ; 15-20% very <br /> 90 fine- to medium-grained sand; trace <br /> iron oxide grain coatings; damp to <br /> moist. <br /> 95-E@95' : 15-20% very fine-grained sand; <br /> drier. <br /> Increasingly sandy. <br /> SANDY SILT, dark brown (10YR, 4/3), 35- <br /> 40% very fine- to predominantly <br /> medium-grained sand; slightly clayey; <br /> sand composition approximately 55% <br /> lithic; 40% quartz; 5% mafic min- <br /> 100- erals; moist. <br /> REMARKS <br /> PLATE A-19 <br />