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1 <br />1 <br />1 <br />1 <br />1 <br />LOG OF EXPLORATORY BORING <br />PROJECT NUMBER 939-02.06 BORING NO. G-2 <br />PROJECT NAME S.J. County Landfill Development Site PAGE 7 OF 8 <br />BY BAB DATE 7/01-02/87 SURFACE ELEV. 104.90 <br />1 <br />1 <br />13 <br />UY 51LI, yellowish brown (10YR, 5/4); <br />20% very fine- to fine-grained sand; <br />10-15% medium- to coarse-grained <br />sand; moderately clayey; occasional <br />rust brown iron oxidation stains; <br />easily crumbled; moist. <br />Varies to Silty Sand with 10% light <br />reddish brown (5YR, 5/3) clay. <br />M%!/,' <br />SM- <br />SILTY SAND to SANDY SILT, strong brown <br />ML <br />(7.5YR, 4/6); 40-55% fines; predom- <br />inantly very fine to fine grained; <br />POCKET <br />PENETRA— <br />sand and fine gravel; much harder <br />EITHO— <br />TORVANE <br />PENETRO— <br />TIONZ <br />J <br />z <br />y <br />J GRAPHIC DESCRIPTION <br />with 35% subangular to subrounded <br />METER <br />quartz; cemented agent unknown; <br />= W <br />W <br />= <br />`o. <br />a <br />(TSF) <br />(TSF) <br />(Blows/ <br />Ft.) <br />Z < <br />3 J <br />2 COLUMN <br />v <br />® <br />vs <br />1 <br />1 <br />13 <br />UY 51LI, yellowish brown (10YR, 5/4); <br />20% very fine- to fine-grained sand; <br />10-15% medium- to coarse-grained <br />sand; moderately clayey; occasional <br />rust brown iron oxidation stains; <br />easily crumbled; moist. <br />Varies to Silty Sand with 10% light <br />reddish brown (5YR, 5/3) clay. <br />M%!/,' <br />SM- <br />SILTY SAND to SANDY SILT, strong brown <br />ML <br />(7.5YR, 4/6); 40-55% fines; predom- <br />inantly very fine to fine grained; <br />minor coarse- to very coarse-grained <br />sand and fine gravel; much harder <br />than above. <br />CEMENTED SAND, coarse grained; trace <br />SP <br />fine gravel; metamorphic composition, <br />with 35% subangular to subrounded <br />quartz; cemented agent unknown; <br />extreme 1 v hard. <br />REMARKS <br />denotes static water level. <br />Interval 120-130 feet cored (1-1/2 feet recovery). <br />denotes core recovered. <br />PLATE A-31 <br />