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UNIFIED SOIL CLASSIFICATION SYSTEM MAJOR DIVISIONS LTR ' DESCRIPTION ~ WELL-GRADED GRAVELS OR GW GRAVEL SAND MIXTURES. LITTLE OR NO FINES N ~- - - o rn } POORLY-GRADED GRAVELS ~ GP OR GRAVEL SAND MIXTURE, I" LITTLE OR NO FINES a i ' cv - - SILTY GRAVELS, GM GRAVEL-SAND-SILT w MIXTURES ~ ~ J ~ GC GRAVEL-SAND-CLAY o MIXTURES z - Q - -- - - - -- c~ WELL-GRADED SANDS OR a SW GRAVELLY SANDS, LITTLE p OR NO FINES U o POORLY-GRADED SANDS, OR SP GRAVELLY SANDS, LITTLE p OR NO FINES a (A -_ _-__. __ O a SM I SILTY SANDS, SAND-SILT o MIXTURES z a SC CLAYEY SANDS, SAND-CLAY MIXTURES NOTES 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. - Korbmacher ? a E r-~ g i h a c r 1 r-i g I e-i c - PROJECT NO. JB-569 DATE 70/06 MAJOR DIVISIONS LTR DESCRIPTION i INORGANIC SILTS AND VERY FINE SANDS, ROCK FLOUR, ML SILTY OR CLAYEY FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY - ~ g - - p~°n INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY, z v , CL GRAVELLY CLAYS, SANDY a ~ ' CLAYS, SILTY CLAYS, ~ ~ LEAN CLAYS J ORGANIC SILTS AND ~ ~ OL ORGANIC SILT-CLAYS OF ~ LOW PLASTICITY 0 C INORGANI SILTS, MICACEOUS z MH OR DIATOMACEOUS FINE, SANDY OR SILTY SOILS, LL ELASTIC SILTS g __ __. _. p ~ INORGANIC CLAYS OF n CH MEDIUM TO HIGH a ~ J PLASTICITY, FAT CLAYS ~ _J ~ ORGANIC CLAYS OF MEDIUM OH ' TO HIGH PLASTICITY, ORGANIC SILTS HIG ORGA HLY NIC Pt PEAT AND OTHER HIGHLY SOI LS ORGANIC SOILS KEY TO SYMBOLS MODIFIED CALIFORNIA SAMPLER 2 0 ID , . - ~~ ,~ MODIFIED CALIFORNIA SAMPLER, 2.5-ID i SHELBY TUBE SAMPLE SP STANDARD PENETRATION SPLIT-SPOON SAMPLE WATER LEVEL OBSERVED IN BORING 'f NO RECOVERY NFWE NO FREE WATER ENCOUNTERED BORING LOG LEGEND Proposed Vineyard Pass Subdivision 865 Clara Lane Pleasanton, California N0. 3