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I7 C. 0 LOG OF EXPLORATORY BORING PROJECT NUMBER 939-02.06 BORING NO. G-1 PROJECT NAME S.J. County Landfill Development Site PAGE 1 OF 9 BY BAB DATE 6/22-23/87 SURFACE ELEV. 117.07 REMARKS Drilled with air -rotary drilling equipment to a total depth of 166.5 feet. Water injection was employed from 106-166.5 feet. Boring was converted to a 4 -1/2 -inch -diameter ground -water monitoring well (see Plate ). ® denotes bag sample. POCKET PENETRA- ML 4 LITHO- TORVANE PENETRO- TION z y GRAPHIC DESCRIPTION METER Biows ( / =,'`' O < w ? n a COLUMN (TSF) (TSF) Ft.) v 3 J o a 5 25% very fine- to predominantly medium -grained sand; softer than REMARKS Drilled with air -rotary drilling equipment to a total depth of 166.5 feet. Water injection was employed from 106-166.5 feet. Boring was converted to a 4 -1/2 -inch -diameter ground -water monitoring well (see Plate ). ® denotes bag sample. ML SANDY CLAYEY SILT, light brown (7.5YR, 6/4); moderately clayey; 20-25% very fine- to coarse-grained quartzose sand; very common fine rootholes and roots; dry. CL SANDY CLAY, yellowish red (5YR, 4/6); 5 25% very fine- to predominantly medium -grained sand; softer than above; very damp to moist. ML SANDY SILT, brownish yellow (10YR, 6/6); 40-45% fine- to medium -grained sand; slightly clayey; damp. 10 SC CLAYEY SAND, strong brown (7.5YR, 4/6); 40% fines; very fine to predominantly medium to coarse grained; moist. 15 CL CLAY, brown (10YR, 5/3); trace medium - to coarse-grained sand; slight to moderate plasticity; moist. ?n REMARKS Drilled with air -rotary drilling equipment to a total depth of 166.5 feet. Water injection was employed from 106-166.5 feet. Boring was converted to a 4 -1/2 -inch -diameter ground -water monitoring well (see Plate ). ® denotes bag sample.