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0 0 0"0` ,
<br /> o c Well-graded gravel and Terms Describing Relative Density and Consistency
<br /> E2 8.0.,GW gravel with sand, little to (2)
<br /> Density SPT blows/foot
<br /> 4) �o, no fines Very Loose 0 to 4
<br /> m > u o°o°.. Coarse- Loose 4 to 10
<br /> Poorly-graded gravel Grained Soils
<br /> i U°in v il o�o�o GP Medium Dense 10 to 30 Test Symbols
<br /> ,. °°°°° and gravel with sand, • Dense 30 to 50
<br /> o E o 0.0.). G=Grain Size
<br /> °°°°° little to no fines Very Dense >50
<br /> a -z °°0°0 (2 M= Moisture Content
<br /> d Za o , 0, 0 Consistency SPT )blows/foot A=AtterbergLimits
<br /> Z Silty gravel and siltya
<br /> a a - VerySoft 0 to 2 C=Chemical
<br /> o .,as c. o C o( GM gravel with sand Fine- Soft 2 to 4 DD=Dry Density
<br /> S 2, m Grained Soils
<br /> o c Medium Stiff 4 to 8 K=Permeability
<br /> -§ i cc N i` Stiff 8 to 15
<br /> & ..,. Clayey gravel and Very Stiff 15 to 30
<br /> A it " GC clayey gravel with sand Hard >30.
<br /> 1 ,'� Component Definitions
<br /> o •
<br /> Well-graded sand and Descriptive Term Size Range and Sieve Number
<br /> w s Sw sand with gravel, little Boulders Larger than 12"
<br /> o „••••.;•, to no fines Cobbles 3"to 12"
<br /> i Gravel 3"to No.4(4.75 mm)
<br /> CO N o Poorly-graded sand
<br /> •o o SP. .• :_- Coarse Gravel 3"to 3/4"
<br /> v w o - SP and sand with gravel, Fine Gravel 3/4"to No.4(4.75 mm)
<br /> a0 o v little to no fines
<br /> Sand No.4(4.75 mm)to No.200(0.075 mm)
<br /> 0 M Coarse Sand No.4(4.75 mm)to No.10(2.00 mm)
<br /> 2,3
<br /> y SM Silty sand and Medium Sand No.10(2.00 mm)to No.40(0.425 mm)
<br /> silty sand with Fine Sand No.40(0.425 mm)to No.200.(0.075 mm)
<br /> gravel Silt and Clay Smaller than No.200(0.075 mm)
<br /> u, et--.. -
<br /> 0
<br /> sC Clayey sand and (3)Estimated Percentage Moisture Content
<br /> NI clayey sand with gravel Component Percentage byWeight Dry-Absence of moisture,
<br /> P 9 g
<br /> dusty,dry to the touch
<br /> Trace <5
<br /> Slightly Moist-Perceptible
<br /> Silt,sandy silt,gravelly silt, moisture
<br /> aci
<br /> ML silt with sand or gravel Some 5 to<12
<br /> > a Moist-Damp but no visible
<br /> ° 2 Modifier 12 to<30 water
<br /> ca `-° u j Clay of low to medium (silty,sandy,gravelly) Very Moist-Water visible but
<br /> o ° j plasticity;silty,sandy,or not free draining
<br /> z F. j CL Very modifier 30 to<50 Wet-Visible free water,
<br /> - J j gravelly clay, lean clay usually
<br /> N (silty,sandy,gravelly) from below water table
<br /> co 6 == Organic clay or silt of low Symbols
<br /> 2 D. —_ OL plasticity Blows/6"or
<br /> Sampler portion of 6" Cement grout
<br /> o - - - Type / >7' surface seal
<br /> Elastic silt,clayey silt,silt i Sam ler T e
<br /> • P Yp
<br /> with micaceous or OD % 1$ Description Bentonite
<br /> o MH Split-Spoon a. (4) seal
<br /> t o diatomaceous fine sand or Sampler 3.0"OD Split-Spoon Sam ler
<br /> co Silt I' p - .•. Filter pack with
<br /> •a co o (SPT) 13.25"OD Split-Spoon Ring Sampler (4) . •:-:blank casing
<br /> o Clay of high plasticity,
<br /> Q: section
<br /> aVi c w CH sandy or gravelly clay,fat Bulk sample I 3.0"OD Thin Wall Tube Sampler =--:Screened casing•
<br /> a claywith sand orgravel = or Hydrotip
<br /> cc 0•- (including Shelby tube)
<br /> n _ with filter pack
<br /> ° FT) :C2 4 Grab Sample V _
<br /> . a Q %�!; Organic clay or silt of 0 Portion not recovered End cap
<br /> "- - ;5��/; OH medium to high (1) (4)
<br /> d• ;���i�� Percentage by dry weight Depth of ground water
<br /> a /i,% plasticity (2) (SPT)Standard Penetration Testp
<br /> N (ASTM D-1586) Y ATD=At time of drilling
<br /> a >,2 �, Peat,muck and other (3) Q Static water level(date)
<br /> r In General Accordance with
<br /> °, •a,o,'o PT highly organic soils Standard Practice for Description (5) Combined USCS symbols used for
<br /> D
<br /> I and Identification of Soils(ASTM D-2488) fines between 5%and 12%
<br /> aClassifications of soils in this report are based on visual field and/or laboratory observations,which include density/consistency,moisture condition,grain size,and
<br /> plasticity estimates and should not be construed to imply field or laboratory testing unless presented herein.Visual-manual and/or laboratory classification
<br /> 3 methods of ASTM D-2487 and D-2488 were used as an identification guide for the Unified Soil Classification System.
<br /> 5.
<br /> m
<br /> Y
<br /> associated:4" 11 011>,,
<br /> E 4.0 earth sciences EXPLORATION LOG KEY FIGURE Al
<br /> 2 incorporated
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