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LOG OF EXPLORATORY BORING i' PROJECT NUMBER 939-03.14 BORING NO. MW-2 PROJECT NAME San Joaquin County - Corral Hollow Landfill PAGE i OF 9 BY S. Lofholm DATE 5/11/88 SURFACE ELEV. 303.39' POCKET PENETRA- ®,m = • W LITHO- J RECOVERY PENETRO- TION j��j ►'� J GRAPHIC jH DESCRIPTION WE METER (BIONS/ Ir3 W QZ Q COLUMN 3W (FT/FT) (TSF) Ft.) n J ~ N O ML SANDY SILT, dark grayish brown (10YR, 5/2); 5-10% fine to medium sand; trace fine gravel; loose; dry to damp. � g 5— GM SILTY SANDY GRAVEL, light olive gray (5Y, 6/2); 10-15% low plasticity fines; 20-25% very fine to coarse sand, subangular to subrounded, predominantly quartz, 30% metamorphics; fine to medium gravel, subangular to subrounded, IO SM predominantly metamorphics; damp to moist. SILTY SAND, dark brown (10YR, 4/3); 5-10% fines; fine to coarse sand, 65% fine, 20% <; I medium, 15% coarse sand, predominantly .. round, trace subrounded, predominantly IS quartz; 10% fine to medium gravel; gravel predominantly metamorphics; damp. @ 16': percentage of gravels increasing to y 15%; damp to dry. SP .... GRAVELLY SAND, brown (10YR, 5/3); 5% is GP = = low plasticity fines; fine to coarse sand, 60% 20 fine, 35% medium, 5% coarse, predominantly quartz, subrounded; 35-45% fine to medium 4` gravel, subrounded, predominantly ... metamorphics; damp. 25- 30- - S 30 GP .®. SANDY GRAVEL, yellowish brown (10YR, 5/4); 5% fines; 15-20% sand, 40% fine, 60% medium to coarse; fine to coarse gravel, predominantly metamorphics; damp. 35— SAND. 5 .. ilk 40 REMARKS U?Z Drilled by 10-inch air rotary casing-hammer, samples collected with 2.5-inch -i, outside-diameter modified California split-spoon sampler. Borehole converted to 5nch EMCON monitoring well as shown on Well Details. �' ASSOCIATES