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a%W, mol <br /> UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR GROUP DESCRIPTION MAJOR GROUP DESCRIPTION <br /> DIVISION SYMBOL DIVISION SYMBOL <br /> GW dell-graded gravels or gravel sand ML Inorganic silts and very fine <br /> GRAVELmixtures. little or no fines. SILTS sands, rock flour, silty or <br /> clayey fine sands or clayey silts <br /> AND GP Poorly-graded gravels or gravel AND with slight plasticity <br /> sand mixtures, little or no fines. <br /> GRAVELLY CLAYS CL Inorganic clays of low to medium <br /> GM Silty gravels, gravel-sand-silt plasticity gravelly clays, sandy <br /> SOILS mixtures. LL(50 clays, silty Clays, lean clays. <br /> COARSE GC Clayey gravels, gravel-sand-clay FINE OL Organic silts and organic silt- <br /> mixtures. clays of low plasticity <br /> GRAINED GRAINED <br /> SW yell-graded sands or gravelly MH Inorganic silts, micaceous or <br /> SOILS SAND sands, little or no fines. SOILS SILTS diatomaceous fine sandy or silty <br /> soils, elastic silts. <br /> AND SP Poorly-graded sands or gravelly AND <br /> sand, little or no fines. CH Inorganic clays of high plasticity, <br /> SANDY CLAYS fat clays. <br /> SOILS SM S:lty sands, sand-silt mixtures. LL)50 OH Organic clays of medium to high <br /> plasticity, organic silts <br /> SC Clayey sands, sand-clay mixtures. 11 HIGHLY Pt Peat and other highly organic <br /> ORGANIC SOILS soils <br /> STANDARD PENETRATION SPLIT SPOON SAMPLE <br /> SHELBY TUBE SAMPLE <br /> MODIFIED PORTER SAMPLE (2.5-in. I.D.) <br /> fm' ' MODIFIED CALIFORNIA SAMPLE (2.0-in. I.D.) <br /> s <br /> Z WATER LEVEL OBSERVED IN BORING <br /> NR NO RECOVERY <br /> N F W E NO FREE WATER ENCOUNTERED <br /> Pp POCKET PENETROMETER (field) <br /> NOTE: THE LINES SEPARATING STRATA ON THE LOGS REPRESENT APPROXIMATE BOUNDARIES <br /> ONLY. THE ACTUAL TRANSITION MY BE GRADUAL. NO WARRANTY IS PROVIDED AS TO <br /> THE CONTINUITY OF SOIL STRATA BETWEEN BORINGS. LOGS REPRESENT TFE SOIL <br /> SECTION OBSERVED AT THE BORING LOCATION ON THE DATE OF DRILLING ONLY. <br /> Arco - Stockton BORING LOG LEGEND <br /> BALBI & CHANG ASSOCIATES PROJECT NO. 1525-69 DATE 08/19/91 <br /> Geotechnical Consultants / Materials Testing PREPARED BY GYM PLATE A-1 <br />