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• <br /> Soil Classification System <br /> uses <br /> MAJOR GRAPHIC LETTER TYPICAL <br /> DIVISIONS SYMBOL SYMBOL DESCRIPTIONSI1t1�1 <br /> 5.":0:U O.0 <br /> GRAVEL AND CLEAN GRAVEL D:0 oO o o GW Wet-graded gravel;graveVsand mixture(s);little or no fines <br /> —1 92 d GRAVELLY SOIL (Little or no fines) )oo.o o o. Gp Poorly graded gravel;graveUsand mixture(s);little or no fines <br /> O m1=4 D 0' 0 <br /> CO.a > (More than 50%of 3' ' t Siltygravel; raveVsand/silt mixture(s) <br /> o m GRAVEL WITH FINES �. , •p GM9 ( ) <br /> coarse fraction retained P <br /> W E'N <br /> Z (Appreciable amount of ► J <br /> o N o on No.4 sieve) fines) � o� +:'y GC Clayey gravel;graveUsandlclay mixture(s) <br /> u0 zCLEAN SAND SW Well-graded sand;gravelly sand;little or no fines <br /> LI, (7,c SAND AND <br /> cot 2 SANDY SOIL (Little or no fines) <br /> Q0 SP Poorly graded sand;gravelly sand;little or no fines <br /> 0 2, (More than 50%of <br /> USM coarse fraction passed SAND WITH FINES f SM Silty sand;sand/silt mixture(s) <br /> through No.4 sieve) (Appreciable amount of <br /> fines) SC Clayey sand;sand/clay mixture(s) <br /> ) <br /> Inorganic silt and very fine sand;rock flour;silty or clayey fine <br /> TA d SILT AND CLAY ML sand or clayey silt with slight plasticity <br /> p P.7 CL Inorganic clay of low to medium plasticity;gravelly day,sandy <br /> p co N (Liquid limit less than 50) < day;silty clay;lean clay <br /> uJ ° o < QL Organic silt;organic,silty clay of low plasticity <br /> Zo z� < <br /> O G N <br /> 10 a7, <br /> c SILT AND CLAY MH Inorganic silt;micaceous or diatomaceous fine sand <br /> W d m CH Inorganic clay of high plasticity;fat clay <br /> LL 0 E (Liquid limit greater than 50) <br /> "" OH Organic clay of medium to high plasticity;organic silt <br /> HIGHLY ORGANIC SOIL PT Peat;humus;swamp soil with high organic content <br /> v <br /> GRAPHIC LETTER <br /> OTHER MATERIALS SYMBOL SYMBOL TYPICAL DESCRIPTIONS <br /> PAVEMENT AC or PC Asphalt concrete pavement or Portland cement pavement <br /> ROCK w��`�� RK Rock(See Rock Classification) <br /> 471YC*i <br /> WOOD ~ WD <br /> j.-.;!'"4 Wood,lumber,wood chips <br /> DEBRIS C� A DB Construction debris,garbage <br /> Notes: 1. Soil descriptions are based on the general approach presented in the Standard Practice for Description and Identification of Soils(Visual-Manual Procedure), <br /> as outlined in ASTM D 2488.Where laboratory index testing has been conducted,soil classifications are based on the Standard Test Method for Classification <br /> of Soils for Engineering Purposes,as outlined in ASTM D 2487. <br /> 2. Soil description terminology is based on visual estimates(in the absence of laboratory test data)of the percentages of each soil type and is defined as follows: <br /> Primary Constituent: >50%-"GRAVEL,""SAND,""SILT,""CLAY,"etc. <br /> Secondary Constituents: >30%and<50%-"very gravelly,""very sandy,""very silty,"etc. <br /> >12%and<30%-"gravelly,""sandy,""silty,"etc. <br /> Additional Constituents: > 5%and<12%-"slightly gravelly,""slightly sandy,""slightly silty,"etc. <br /> < 5%-"trace gravel,""trace sand,""trace silt,"etc.,or not noted. <br /> Drilling and Sampling Key Field and Lab Test Data <br /> SAMPLE NUMBER&INTERVAL SAMPLER TYPE <br /> Code Description Code Description <br /> Sample Identification Number a 3.25-inch O.D.,2.42-inch I.D.Split Spoon PP=1.0 Pocket Penetrometer,tsf <br /> b 2.00-inch O.D.,1.50-inch I.D.Split Spoon TV=0.5 Torvane,tsf <br /> Recovery Depth Interval c Shelby Tube PID=100 Photoionization Detector VOC screening,ppm <br /> 1I ]14-- Sample Depth Interval d Grab Sample W=10 Moisture Content, <br /> e Other-See text if applicable D=120 Dry Density,per <br /> Portion of Sample Retained 1 300-lb Hammer,30-inch Drop -200=60 Material smaller than No.200 sieve,% <br /> for Archive or Analysis 2 140-lb Hammer,30-inch Drop GS Grain Size-See separate figure for data <br /> 3 Pushed AL Atterberg Limits-See separate figure for data <br /> 4 Other-See text if applicable GT Other Geotechnical Testing <br /> Groundwater CA Chemical Analysis <br /> Q Approximate water elevation at time of drilling(ATD)or on date noted. Groundwater <br /> ATD levels can fluctuate due to precipitation,seasonal conditions,and other factors. <br /> Proposed Building Figure <br /> oeoTG 55TDevelopment Soil Classification System and Key <br /> 3313 Oakes Avenue 4 <br /> Everett, WA <br />