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UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISION LS TYPICAL NAMES <br /> GRAVELS C' 1M1 W°ded gravels or gravei—nand rnmWsm. Rede or no &on <br /> MORE THAN 1/2 Of GP •�j Poomy "ate grovels or caval--sand mhrtsraa Me or no &we <br /> COARSE FRACTION > <br /> I Na 4 SEA SIZE GAS S1tyr gravMla; grovei—wend—alt mhrturw <br /> 8 pf 1 GCX Clay 9rvolwk gragi—tend—aiay mhcturw <br /> SANDS sW :- well w,,ow monde or gravelly fond, Rtes or na tkut <br /> MORE THAN 1/2 OF SP Poorty graisd mond+ or grovaily sande, Me or no flies <br /> $ i COARSE FRACTION < <br /> No. 4- SIEVE SIZE SM Silty am sands—dt meth ree <br /> Sc Clayey sande, sand—drtmh <br /> ay rturw <br /> ML inwgank dts and very An* sands, rod* Aour, dty or clayey <br /> Tho vends or ofayey dts with Night plortlafty <br /> R' SILTS & CLAYS laa•ganic slays of low to rnedtum ploetlally, gravelly clays <br /> v 'I LL<50 CL sandy cicye, alty days lean mays <br /> <<< <br /> g: QL and organic dty days low pioetloHy <br /> MH m�Mose flt�mo.aws or dlatamoosout fine wandy or dty <br /> j.: SILTS & CLAYS <br /> } LL�60 ECH lnorgank days of high piastlelty, fat days <br /> z OH Organ[+ dmod <br /> urn of mmum to hl" plastlafty, orgonie slclays. <br /> ays. <br /> 1 W'Mlc du <br /> WONLr 0KAHJC SOILS P4 M <br /> Peat and other highly organic molls <br /> ' CLASSIFICATION CHART <br /> I RANGE OF GRAIN SIZES <br /> CLASSIFICATION U.S. Standard Grain Size <br /> Sieve Size In Millimeters <br /> BOULDERS j Above 12" Above 305 <br /> C013BLES12" to 3" 305 to 76.2 <br /> GRAVEL 3" to No. 4 76.2 to 4.76 <br /> COARSE i 3" to 3/4" i 76.2 to 4.76 <br /> FINE 3/4" to No. 4 19.1 to 4.76 <br /> SAND No. 4 to No. 200 4.76 to 0.074 <br /> COARSE No. 4 ro No. 10 4.76 to 2.00 <br /> FINE No. 10 to No. 40 2.00 to 0.420 <br /> MEDIUM No. 4.0 to No. 200 0.420 to 0.074 <br /> SILT do CLAY Below No. 200 Below No. 0.074 <br /> ❑0�; <br /> GRAIN SIZE CHART ❑�❑ GROUNDWATER <br /> L , TNc. <br /> OCTOBER 1 Jth, 1 YAC — REV. f <br />