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11 <br />0 <br />L <br />r <br />C <br />k <br />G <br />i <br />C <br />n <br />0 <br />n <br />u <br />C <br />LOG OF EXPLORATORY BORING <br />PROJECT NUMBER 939-02.06 BORING NO. G-1 <br />PROJECT NAME S.J. County Landfill Development Site PAGE 8 OF 9 <br />BY BAB DATE 6/22-23/87 SURFACE ELEV. 117.07 <br />ML- SANDY SILT to SILTY SAND (continued); <br />SM dark yellowish brown (10YR, 4/4); <br />very fine to fine grained; minor <br />medium grained, common black coat- <br />ings; increasingly more indurated. <br />CL/ <br />POCKET <br />PENETRA- <br />145 SM <br />LITHO- <br />TORVANE <br />PENETRO- <br />TION <br />z W '' <br />V= <br />z <br />H <br />a GRAPHIC DESCRIPTION <br />CL <br />METER <br />(®F{ <br />W <br />g <br />COLUMN <br />(TSF) <br />(TSF) <br />)s� <br />0 _j <br />W <br />H <br />IE SP <br />Tk <br />SILTY SAND, dark yellowish brown (10YR, <br />SM <br />IR <br />4/4); 15-25% fines; very fine to fine <br />ML- SANDY SILT to SILTY SAND (continued); <br />SM dark yellowish brown (10YR, 4/4); <br />very fine to fine grained; minor <br />medium grained, common black coat- <br />ings; increasingly more indurated. <br />CL/ <br />CLAY and SILTY SAND, Interbedded (1:1); <br />145 SM <br />Clay: weak red (2.5YR, 5/2); more <br />SP/ <br />indurated than clay above. <br />ML/ <br />Silty Sand: dark yellowish brown <br />CL <br />T <br />(10YR, 4/4); 40% fines; very fine <br />to fine grained; minor medium <br />1555-10% <br />grained; trace iron and manganese <br />SM- <br />oxidation. <br />IE SP <br />Tk <br />SILTY SAND, dark yellowish brown (10YR, <br />SM <br />IR <br />4/4); 15-25% fines; very fine to fine <br />grained; slightly more quartzose and <br />150 <br />micaceous than above; iron (?} <br />y, <br />cemented; low rock hardness. <br />6/23/87 <br />SM/ <br />SM- <br />SILTY SAND, SAND, SANDY SILT and CLAY, <br />SP/ <br />Interbedded (approximately 50%, 10%, <br />ML/ <br />20%, 20%); <br />CL <br />T <br />Silty Sand: as at 150'. <br />Sand: yellowish brown (10YR, 5/4); <br />1555-10% <br />fines; predominantly medium <br />SM- <br />to coarse grained; trace very hard <br />IE SP <br />x <br />rounded fine pebbles. <br />01 Sandy Silt: dark yellowish brown <br />(10YR, 4/6); 20-25% fine-grained <br />ore Bo <br />sand; slightly clayey; trace fine <br />1 SM <br />rootholes. <br />SILTY SAND, yellowish brown (10YR, 5/4); <br />10% fines; predominantly medium to <br />coarse grained; trace fine gravel; <br />,Gn <br />minor clay interbeds. <br />REMARKS <br />2—denotes first encountered water. <br />Interval 156.5-166.5 feet cored (2 feet recovery). <br />denotes core recovered. <br />PLATE A-22 <br />