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KEY TO SYMBOLS" <br /> r <br /> UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISIONS JEECATYPICAL NAMES <br /> graded gravels or gravel—sand mixtures, little or nofnes <br /> (More than%:ofy graded gravels or gravel—sand mixtures,little or no fines <br /> coarse fraction>No.4ravels, ravel—sand—silt mixtureso ff —„ sieve size) 9 9w `om <br /> y gravels,gravel—sand—clay mixturesE N Well graded sands or gravelly sands, little or no fines <br /> Lu <br /> N <br /> r ¢ _ (More than M.of SP Poorly graded sands or gravelly sands, little or no fines <br /> O coarse fraction<No. 4 <br /> U sieve size) SM Silty sands,sand—silt mixtures <br /> r SC Clayey sands, sand—clay mixtures <br /> Inorganic silts and very fine sands,rock flour,silty or clayey fine sands or clayey <br /> (a v ML I I I I silts with slight plasticity <br /> — d cl 7c g evc <br /> Inorganic clays of low to medium plasticity, <br /> 6. H o A LL<50 �L00 g Y P Y.gravelly clays,sandy clays,silty clays, <br /> o `o N lean clays <br /> _ >m_ OL Organic silts and organic silty clays of low plasticity <br /> Z C N <br /> A O <br /> r O Ec H MH Inorganic silts, micaceous or diatomaceous fine sandy or silty soils,elastic silts <br /> m <br /> w `o d SILIKASJ.AYS <br /> LZ M z LL>50 CH Inorganic clays of high plasticity,fat clays <br /> OH Organic clays of medium to high plasticity, organic silty clays,organic silts <br /> r. <br /> HIGHLY ORGANIC SOILS Pt Peat and other highly organic soils <br /> OTHER SYMBOLS GRAIN SIZE CLASSIFICATION <br /> - RANGE OF GRAIN SIZES <br /> Drive Sample CLASSIFICATION U.S. Standard Grain Size <br /> Sieve Size in Millimeters <br /> = Drive Sample: no recovery BOULDERS Above 12" Above 305 <br /> COBBLES 12"to 3" 305 to 76.2 <br /> = Initial Water Level GRAVEL 3"to No.4 76.2 to 4.76 <br /> r coarse(c) 3"to''%" 76.2 to 19.1 <br /> = Final Water Level f ne %"to No.a 19.1 to 4.76 <br /> ------ = Estimated/gradational material change line SAND No.4 to t N o 200 4.76 to 0.074 <br /> coarse(c) No.4 to No. 10 4.76 to 2.00 <br /> Observed material change line medium(m) No. 10 to No.40 2.00 to 0.420 <br /> fine No.40 to No.200 0.420 to 0.074 <br /> LABORATORY TESTS SILTY 8 CLAY Below No.200 Below 0.074 <br /> PI = Plasticity Index CONSISTENCY CLASSIFICATION <br /> EI = Expansion Index COHESIVE SOILS GRANULAR SOILS <br /> Description I Blows I It Description Blows I ft' <br /> r UCC = Unconfined Compression Test Very soft <3 Very loose <5 <br /> Soft 3-5 Loose 5-15 <br /> TR = Triaxial Compression Test Medium(firm) 6-10 Medium dense 16-40 <br /> r Stiff 11 -20 Dense 41 —65 <br /> GR = Gradational Analysis (Sieve Very stiff 21 -40 Very dense >65 <br /> Hard >40 SPT <br /> Client: Diede Construction, Inc. <br /> �SIGNET Project: French Camp Self Storage <br /> r 7�Sf ng Labs French Camp Road at Highway 99, French Camp, CA <br /> Project No. 0010771 Figure A7 <br />