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o cc Terms DescribingRelative Densityand Consistency
<br /> t ;.> o Well-graded gravel and
<br /> cu == 0.o. GW gravel with sand, little to
<br /> u. ,o r o 0` Density SPT z blows/foot
<br /> a) •G , c no fines Very Loose 0 to 4
<br /> 12 a) o--0,--- --
<br /> _0 Coarse- Loose 4 to 10
<br /> > o a 0 0 0 0 0 Poorly-graded gravel Grained Soils Medium Dense 10 to 30
<br /> i» vtI o 0 0 0 GP and gravel with sand, Dense 30 to 5o Test Symbols
<br /> o ° `� 000G. G=Grain Size
<br /> o c o o little to no fines Very Dense >50
<br /> N ae z o 0 0 0 o M =Moisture Content
<br /> d co c o c, c' Consistency SPT(2)blows/foot A=Atterberg Limits
<br /> � 0 �, Silty gravel and silty Very Soft 0 to 2 C=Chemical
<br /> o w 2�, , GM gravel with sand Fine- Soft 2 to 4 DD=Dry Density
<br /> 13 co m o 0, 0 Grained Soils
<br /> c E 75 ci c�c Medium Stiff 4 to 8 K= Permeability
<br /> ,� M 4-' �! Stiff 8 to 15
<br /> a) N y,'`' Clayey gravel and Very Stiff 15 to 30
<br /> N Na,tGC
<br /> o s• clayey gravel with sand Hard >30
<br /> to o Component Definitions
<br /> 03 c Well-graded sand and Descriptive Term Size Range and Sieve Number
<br /> w
<br /> SW sand with gravel,little Boulders Larger than 12"
<br /> '2o c o '.'.•'.'
<br /> ►° r:. ' to no fines Cobbles 3"to 12"
<br /> M .C.
<br /> °' "•°'' - Gravel 3"to No.4(4.75 mm)
<br /> 0 0 ::..: Poorly-graded sand Coarse Gravel 3"to 3/4"
<br /> cn U .c2 `�.. -.=:-. SP and sand with gravel, Fine Gravel 3/4"to No.4(4.75 mm)
<br /> aoi d little to no fines Sand No.4(4.75 mm)to No.200(0.075 mm)
<br /> C - Coarse Sand No.4(4.75 mm)to No.10(2.00 mm)
<br /> 0 a Silty sand and Medium Sand No. 10(2.00 mm)to No.40(0.425 mm)
<br /> ai�. ,� SM silty sand with Fine Sand No.40(0.425 mm)to No.200(0.075 mm)
<br /> o o a gravel Silt and Clay Smaller than No.200(0.075 mm)
<br /> Loco, off_.
<br /> / Clayey sand and (3)Estimated Percentage Moisture Content
<br /> M- :: SC clayey sand withgravel
<br /> in f, y y Component Percentage by Weight Dry-Absence of moisture.
<br /> f�::f dusty,dry to the touch
<br /> �•�!/ Trace <5
<br /> Slightly Moist-Perceptible
<br /> Silt, sandy silt,gravelly silt, moisture
<br /> uo., ML silt with sand or gravel Some 5 to<12 Moist-Damp but no visible
<br /> in N t Modifier 12 to<30 water
<br /> o 2 N �/ Clay of low to medium (silty,sandy,gravelly) Very Moist-Water visible but
<br /> N o N , not free draining
<br /> d °; ' ' CL plasticity; silty, sandy,or
<br /> N 0 E / Very modifier 30 to<50 Wet-Visible free water,usually
<br /> gravelly clay, lean clay
<br /> a) —J // (silty,sandy,gravelly) from below water table
<br /> a 5 !— Organic clay or silt of low Symbols
<br /> 2 E=_ OL plasticity Blows/6"or
<br /> o __; Sampler portion of 6" '<Cement grout
<br /> Type \ ; �' >surface seal
<br /> Elastic silt,clayey silt, silt 2 0„ODN / Sampler Type
<br /> c with micaceous or Bentonite
<br /> o a? MH Split-Spoon a Description (4) seal
<br /> Ln o diatomaceous fine sand or Sampler ' 3.0"OD Split-Spoon Sampler i
<br /> % P .Filter pack with
<br /> �n a o i silt (SPA —� 3.25"OD Split-Spoon Ring Sampler (4) .blank casing
<br /> c° % Clay of high plasticity,
<br /> cf) section
<br /> v 0 Bulk sample '
<br /> 0 c= /// CH sandy or gravelly clay,fat 3.0"OD Thin-Wall Tube Sampler —...Screened casing
<br /> C to clay with sand or gravel (including Shelby tube) =or Hydrotip
<br /> o rn E — with filter pack
<br /> Grab Sample '• End cap
<br /> c i� G •
<br /> Portion not recovered
<br /> ;/�,/� Organic clayor silt of
<br /> ,,�/j/ g
<br /> u- -' /; OH medium to high (') Percentage by dry weight (4) Depth of ground water
<br /> %;%; plasticity (2) (SPT)Standard Penetration Test
<br /> /i„),,� 1 ATD=At time of drilling
<br /> g � (ASTM D-1586) Static water level(date)
<br /> >,E N Peat, muck and other (3) In General Accordance with
<br /> g rn a, �'' PT highly organic soils Standard Practice for Description (5) Combined USCS symbols used for
<br /> = O and Identification of Soils(ASTM D-2488) fines between 5%and 12%
<br /> o Classifications of soils in this report are based on visual field and/or laboratory observations,which include density/consistency,moisture condition,grain size,and
<br /> g 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.
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<br /> associated_9. 0101
<br /> - earth sciences EXPLORATION LOG KEY FIGURE Al
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