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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />LOG OF EXPLORATORY BORING <br />PROJECT NUMBER 939-03.14 BORING NO. SB -2 <br />PROJECT NAME San Joaquin County - Corral Hollow Landfill PAGE 1 OF 3 <br />BY S. Lofholm DATE 4/12/88 SURFACE ELEV. 255.62 ' <br />POCKET PENETRA- a lr o =� W LITHO - <br />RECOVERY PENETRO- TION >WW ha.LL, -, GRAPHIC <br />METER (Bla. <br />ows/ fr3 W WZ ¢ COLUMN <br />(FT/FT) (TSF) Ft.) J H W <br />SC; <br />DESCRIPTION <br />CLAYEY SAND FILL, pale yellow (2.5Y, 7/4); <br />20-25% fines; fine sand, 5% coarse sand, <br />quartzose; loose; dry. <br />1.5/1.5 28 ML SANDY SILT, light yellowish brown (2.5Y, 6/4); <br />5 low plasticity fines, finely laminated; 15-20% <br />fine sand; trace iron oxide in (0.1") concretions; <br />few rootlets; very soft; damp. <br />SP :::: GRAVELLY SAND, light olive brown (2.5Y, 5/6); <br />1.0/1.5 15 :::: 5-10% low plasticity fines; 60% fine sand, 40% <br />30/4" 10 medium sand; 25-35% fine to coarse gravel; <br />.. angular to subrounded (chert, feldspars, and <br />quartz); minor iron oxide coating on grains; very <br />dense; dry to damp. <br />0.011.5 50/6" <br />15 . <br />GP SANDY GRAVEL, as above, 35-40% fine sand. <br />(NOTE: sample collected from cuttings). <br />GM SILTY SANDY GRAVEL, dark yellowish brown <br />(10YR, 4/4); 10% fines; 35-40% fine to coarse <br />sand, subangular to subrounded; 60% fine to <br />1.0/1.5 32 coarse gravel, subrounded; very dense; moist. <br />50/611 <br />20 <br />AV REMARKS <br />Drilled by 8 -inch continuous -flight hollow -stem auger; samples collected with 2.5 -inch <br />otuside-diameter modified Cailfornia split -spoon sampler. Borehole backfilled with <br />EIVICON cement/bentonite to surface. <br />I <br />