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UNIFIED SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS LTR DESCRIPTION MAJOR DIVISIONS LTR DESCRIPTION Gu Well-graded gravels or gravel sand ML Inorganic silts and very fine mixtures, little or no fines. sands, rock flour, silty or GRAVEL --- — SILTS clayey fine sands or clayey silts GP Poorly-graded gravels or gravel with slight plasticity. AND sand mixture, little or no fines. AND GRAVELLY LM Sill gravels, gravel-sand-clay CLAYS CL Inorganic clays of low to medium Y gr gr Y YS plasticity, gravelly clays, sandy mixtures.SOILS _ LL<50 clays, silty clays, lean clays. COARSE GC Clayey gravels, gravel-sand-clay FINE OL Organic silts and organic sil[- GRAINED ,xt ores. GRAINED c Ys of low plasticity SW Well-graded sands or gravelly MH Inorganic sills, micaceous or SOILS SOILS diatomaceous fine sand or silt sands, little or no lines SILTS soils, elastic silts y y SAND SP Poorly-graded sands or gravelly AND CM Inorganic clays of high plasticit AND sands, little or no fines. CLAYS fat clays. y SANDY SM Silty sands, sand-silt mixtures. LL>50 ON Organic clays of medium to high SOILS plasticity. SC Clayey sands. sand-clay mixtures. HIGHLY Pt Peat and other highly organic ORGANIC SOILS I soils. Standard penetration split spoon sample Modified California sampler IShelby tube sample V Water level observed in boring No recovery NFWE No free water encountered NOTE: The lines separating strata on the logs represent approximate boundaries only. The actual transition may be gradual . No warranty is provided as to the continuity Of soil strata between borings. Logs represent the soil section observed at the boring location on the date of drilling only. PLATE KLEIN FELDER BORING LOG LEGEND PREPARED BY: KA DATE: 5/5/88 II CHECKED BY: SRD DATE: 5/5/88 PROJECT NO. 20-2253-02 A117