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UNIFIED SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS LTR DESCRIPTION MAJOR DIVISIONS LTR DESCRIPTION GV 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 CL Inorganic clays of low to medium GRAVELLY GM Silty gravels, gravel-sand-clay CLAYS plasticity, gravelly clays, sandy SOILS mixtures. LL<50 clays, silty clays, lean clays. COARSE GC Clayey gravels, gravel-sand-clay FINE OL Organic silts and organic silt- GRAINED GRAINED mixtures. clays of low plasticity SOILS SW Well-graded sands or gravelly SOILS MH Inorganic silts, micaceous or sands, little or no fines. SILTS diatomaceous fine sandy or silty soils, elastic silts SAND SP Poorly-graded sands or gravelly AND -------- AND sands, little or no fines. CLAYS CH Inorganic clays of high plasticity, at clays. SANDY SM Silty sands, sand-silt mixtures. LL,50 OH Organic clays of medium to high SOILS plasticity. SC Clayey sands, sand-clay mixtures. HIGHLY P[ Peat and other highly organic ORGANIC SOILS 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 KLEINFELDER r BORING LOG LEGEND PREPARED BY: DATE: 3-15-90 CHECKED BY: DATE: PROJECT NO. 20-2949-02 M-12