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L F EXPLORATORY BORING <br /> PROJECT NUMBER 939-02.06 BORING NO. G-3 <br /> PROJECT NAME San Joaquin County Landfill Development Site PAGE 1 OF 11 <br /> BY BAB DATE 6/15-19/87 SURFACE ELEV. 110.30 <br /> POCKET PENETRA- LITHO- <br /> N <br /> TORVANE PENETRO- TION zUJ <br /> GRAPHIC DESCRIPTION <br /> METER > a <br /> (Blows/ <br /> Blows < w a2 COLUMN <br /> (TSF) (TSF) Ft.) c�a 3 '' o N <br /> ML SANDY CLAY to SANDY SILT, brown (10YR, <br /> 5/3) ; 20% fine- to coarse-grained <br /> sand; low plasticity; common fine, <br /> grass roots; dry. <br /> @1.5' : yellowish red (5YR, 5/6) ; <br /> slight increase in sand; abundant <br /> CL- fine rootholes; hard; dry. <br /> CH CLAY, yellowish red (5YR, 4/6) ; 10% <br /> medium-grained sand; very dense and <br /> 5 stiff; damp. <br /> CL/ SILTY SAND and CLAY, Interbedded (4:1) ; <br /> SM Clay: yellowish red (5YR, 4/6); <br /> slight plasticity; damp to moist. <br /> Sand: very pale brown (10YR, 7/4) ; <br /> 15-40% fines; fine to medium <br /> 10 grained; micaceous; occasional iron <br /> oxidation stains. <br /> 15 <br /> SANDY CLAY to SANDY SILT, yellowish <br /> brown (10YR, 5/4) to dark brown <br /> CL (7.5YR, 4/4) and yellowish red (5YR, <br /> 4/6) ; 20% fine- to medium-grained <br /> sand; moderately silty. <br /> 20 <br /> REMARKS <br /> Drilled with air rotary methods to a depth of 170 feet, employing water <br /> injection from 28-50 feet and 110-170 feet. Mud rotary drilling was <br /> used to advance the hole from 170 to a total depth of 215 feet. <br /> ® denotes bag sample. <br />