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f UNIFIED SOIL CLASSIFICATION SYSTEM MAJOR GROUP DESCRIPTION DIVISION SYM50L MAJOR GROUP DESCRIPTION DIVI516N SYMBOL GW Well-graded gravels or GRAVEL mixtures little or no finest sand ML Inorganic silts and very fine SILTS sands rock flour silty or Clayey floe sands or clayey silts AND GP Poorly-graded gravels or AND With slight Plasticity sand mlxtures little or nooafines GRAVELLY GM Silty gravels oravel-sand-silt CLAYS CL Inorganic clays of low to medium SOILS mixtures LLSSO plasticity gravelly clays sandy e COARSE GC Clayey gravels gravel-sand-clay EINE clays silty clays lean clays GRAINED mixtures OL Organic silts and organic silt- gravelly SW Well-graded sands or GRAINED clays of lox plasticity SOILS SAND MH Inorganic silts micaceous or sands little or no fines SOILS SILTS diatomnceaus fine sandy or silty AND SP Poorly-graded sands or soils elastic silts sand little or ao fines AND SANDY CH Inorganic clays of high plasticity CLAYS tat clays SOILS SR Silty sands sand-silt mixtures LL>50 OA Organic clays of medium to high plasticity organic silts SC Clayey sands sand-clay mixtures MILDLY P[ Pea[ and other highly organic ORGANIC SOILS soils Q ® STANDARD PENETRATION SPLIT SPOON SAMPLE 1f m SHELBY TUBE SAMPLE ® MODIFIED PORTER SAMPLE (2 5-in I D ) ® MODIFIED CALIFORNIA SAMPLE (2 0-In I D ) Q HATER LEVEL OBSERVED IN BORING _ NR NO RECOVERY N F WE NO FREE HATER ENCOUNTERED Pp POCKET PENETROMETER (field) NOTE ' THE LINES SEPARATING STRATA ON THE LOGS REPRESENT APPROXIMATE BOUNDARIES ONLY THE ACTUAL TRANSITION My BE GRADUAL NO WARRANTY IS PROVIDED AS TO THE CONTINUITY OF SOIL STRATA BETWEEN BORINGS LOGS REPRESENT T!r SOIL SECTION OBSERVED AT THE BORING LOCATION ON THE DATE OF DRILLING ONLY t i l ROEK BROTHERS PROPERTY BORING LOG LEGEND BALBI & CHANG ASSOCIATES PROJECT NO 1705-1 DATE 4/21/89 Geotechnical Consultants / lhaterfais Testing PREPARED By Dpi PLATE B-1- w f