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Soil Classification System
<br /> usCS
<br /> MAJOR GRAPHIC LETTER TYPICAL DIVISIONS SYMBOL SYMBOL DESCRIPTIONS'I+uzl
<br /> GRAVEL AND CLEAN GRAVEL ''� �ro,i GW Well-graded gravel;gravel/sand mixture(s);little or no fines
<br /> m^ GRAVELLY SOIL (Little or no fines)!
<br /> Gp Poorly graded gravel;gravel/sand mixture(s);little or no fines
<br /> o e (More than 50%of GRAVEL WITH FINES Olt/.1, .l)tly I GM Silty gravel;gravel/sand/silt mixture(s)
<br /> coarse fraction ,. S,
<br /> w " retained on No.4 (Appreciable amount of - ,, _yam
<br /> Nsieve) fines) 4 r f'f GC Clayey gravel;gravel/sand/day mixture(s)
<br /> 0
<br /> w 0 o c SAND AND CLEAN SAND SW Well-graded sand;gravelly sand;little or no fines
<br /> SANDY SOIL (Little or no fines)
<br /> Q '• ,'_ :'. , $p Poorly graded sand;gravelly sand;little or no fines
<br /> O 2 e (More than 50%of
<br /> U m ,,, i SM Silty sand;sand/silt mixture(s)
<br /> coarse fraction passed SAND WITH FINES . ' ::i Yti
<br /> through No.4 sieve) (Appreciable amount of n:'••. z ;.
<br /> fines) -•••• SC Clayey sand;sand/clay mixture(s)
<br /> Inorganic silt and very fine sand;rock flour;silty or clayey fine
<br /> •�o SILT AND CLAY l I ML sand or clayey silt with slight plasticity
<br /> p 1 N j �� CL Inorganic day of low to medium plasticity;gravelly clay;sandy
<br /> CO E • (Liquid limit less than 50) �� . clay silty clay lean day
<br /> w's c.°g PJr1 OL Organic silt;organic,silty clay of low plasticity
<br /> piII
<br /> c�.���y SILT AND CLAY MH Inorganic silt;micaceous or diatomaceous fine sand
<br /> Z• c n (Liquid limit greater than 50) CH Inorganic day of high plasticity;fat clay
<br /> .S s=_ OH Organic clay of medium to high plasticity;organic silt
<br /> HIGHLY ORGANIC SOIL PT Peat;humus;swamp soil with high organic content
<br /> GRAPHIC LETTER
<br /> OTHER MATERIALS SYMBOL SYMBOL TYPICAL DESCRIPTIONS
<br /> PAVEMENT 'C or PC Asphalt concrete pavement or Portland cement pavement
<br /> ROCK /����� � RK Rock(See Rock Classification)
<br /> WOOD• w WD Wood,lumber,wood chips
<br /> :':':" �'
<br /> DEBRIS �' Construction debris,garbage
<br /> ..f.404•:+:N DB
<br /> Notes: 1. Soil descriptions are based on the general approach presented in the Standard Practice for Description and identification of Soils(Visual-Manual
<br /> Procedure), as outlined in ASTM D 2488.Where laboratory index testing has been conducted,soil classifications are based on the Standard Test Method
<br /> for Classification 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
<br /> 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 /> +---i
<br /> Recovery Depth Interval c Shelby Tube PID=100 Photoionization Detector VOC screening,ppm
<br /> 1� 1-4-- Sample Depth Interval d Grab Sample W=10 Moisture Content,%
<br /> e Other-See text if applicable D=120 Dry Density,pcf
<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 /> $� Approbmate 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 Short-Plat Figure
<br /> T 2405 Hillside Lane Soil Classification System and Key
<br /> Everett,Washington 4
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