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UNIFIED SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS LTR DESCRIPTION MAJOR DIVISIONS LTR DESCRIPTION G W WaWgraded gravels or gravel sand mixtures,little Inorganic sftrs and very rine sands,rock flour. GRAVEL or no lines. SILTS M L silty w clayey fine sands or clayey silts with V slight PlasticityAND G P Poorly-graded gravels of gravel sand mixture,little AND or no tines- Inorganic clays of law to medium plasticity, GRAVELLY CLAYS O L gravy clays,sandy days,silty days,lean G M Silty gravels,gravel-sand-sift mixtures. o�� 6.+ SOILS LL<50 - Organic sifts and organic sill-clays of low COARSE G C Clayey gravels,gravel sand day mixtures. FINE O L plas1164 } GRAINED GRAINED i.r SOILS SANG g yy Welt graded sands or gravelly sands,little or no SOILS SILTS M H Inorganic silts,micaceous or diaternamous lines. tine or silly soils,elastic aft. ANDS P Poorly-graded sands or gravelly sands,little or no AND C H SANDY lines. CLAYS Inorganic clays of high plastlft Eat clays- �.r SOILS S M Silty sands,sand,and sift mixtures. LL>50 O H Organic days of medium to high plasticity S C Clayey sands,and day mixtures. HIGHLY ORGANIC SOILS P t Peat and other highly organic soils, fir ` "ee— Major changes in formation Blank casing —— -Minor changes in formation Screened casing Standard penetration split spoon sample Cement grout rice ' © Modified California(Porter)sample ® Bentonite I Shelby tube sample Sand pack or gravel pack Water level observed in boring v Stabilized water level Percent Soil Content L NFWE No free water encountered Trace 0-10% Little 10-20% NOSC No odor,scent,or fluid cut Some 20-30% Sandy OVA Organic VaporAnalyzer Silty )30-501% F ' Clayey PID Total organic vapors(parts per million)measured by a photoionization device tra NOTES: Blow counts represent the number of blows of a 140-pound hammer falling 30 inches required to drive a sampler through the last 12 inches of an 18-inch penetration. 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. References to plasticity of cohesive soils are based on qualitative field observations and not on quantitative field or laboratory tests. Qualitative L soil plasticity is noted solely to aid in stratigraphic correlation and is not intended for geotechnical characterization of soils. I BORING LOG LEGEND PLATE In K L E 1 NFEL DER ARBOR SQUARE CENTER B1 P WECT NO, 24-220117-630 LODIr CALIFORNIA a�.