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Density SPT <br />� N-values <br />Very Loose <br />Loose <br />Med. Dense <br />Dense <br />Very Dense <br /><4 <br />4to10 <br />10 to 30 <br />30 to 50 <br />>50 <br />RELATIV��ISITY / CONSISTENCY <br />VEL SILT / � <br />Approx. Relative : Consistency : SPT <br />Density (°/a) N•values <br /><15 : Very Soft <2 <br />15-35 � Soft 2to4 <br />35 - 65 : Med. Stiff 4 to 8 <br />65 - 85 � Stiff 8 to 15 <br />85 • 100 : Very Stiff 15 to 30 <br />� Hard >30 <br />UNIFIED SOIL CLASSIFICATION SYSTEM <br />Approx. Undrained Shear <br />Strength (ps� <br />Q50 <br />250 - 500 <br />500 -1 Q0a <br />1000 - 2000 <br />2000 - 4000 <br />>4000 <br />MA,IOR DIVISIONS GROUP DESCRIPTIONS <br />� •� GW: Well-gradedGRAVEL <br />Gravel : GRAVEL(<5%fines) .....:...................................................... <br />50 % or more of the coarse � GP : Poorly-graded GRAVEL <br />fraction retained on the #4 ; ................... ..................................................... <br />.......... e o ....... <br />sieve. Use dual symbols (eg. : ' GM : Silty GRAVEL <br />GP-GM)for5%to12%fines. : GRAVEL(>12%fines) ............... ..... ............ ........... . <br />. GC : Clayey GRAVEL <br />...................................:..............o..... . ............................................................ <br />.............. <br />. •:. �. <br />� "" SW : Well-graded SAND <br />. •:: ••: <br />Sand ; SAND (<5 /a fines) •:::•. ... . .... ........ .... <br />. ............................... <br />.. •.,. . <br />"�"`' SP : Poori raded SAND <br />50% or more of the coarse ' %'��� . y'g <br />............................. .�..-.> . ......................................................... <br />fraction passing the #4 sieve. ; •• ••�: <br />""' SM : Sil SAND <br />Use dual symbols (eg. SP-SM) : ";; ; . � <br />..for 5%to 12%fines. � .. SAND (>12°/a fines) ......................................................... <br />. SC : Clayey SAND <br />................................ ........................... <br />...................................................... <br />ML : SILT <br />: .....:...................................................... <br />: Liquid Limk < 50 CL : Lean CLAY <br />. _ _ ............................................................ <br />Silt and Clay = OL : Organic SILT or CLAY <br />:.................................. _ ..:...................................................... <br />50%or more passing #200 sieve MH : Elastic SILT <br />. ............................................................ <br />: Liquid Limit > 50 CH : Fat CLAY <br />: .....:...................................................... <br />OH : Organic SILT or CLAY <br />...................................................................... ............................................................. <br />Highly Organic Soils �� PT : PEAT <br />NOteS: 1. Soil exploration logs contain material descriptions basetl on visual observation and field tests using a system <br />modified from the Uniform Soil Classification System (USCS�. Where necessary laboratory tests have been <br />conductetl (as noted in the "Other Tests" column), unit descnptions may include a dassifcaUon. Please refer to the <br />tliscussions in the report text for a more complete description of the subsurface conditions. <br />2. The graphic symbols given above are not inclusive of all symbols that may appear on the borehole logs. <br />Other symbols may be used where field observations indicated mixetl soil constituents or dual constituent materials. <br />DESCRIPTIONS OF SOIL STRUCTURES <br />Layered: Units of material distinguished by color and/or <br />composition trom material units above and below <br />Laminated: Layers of soil typically 0.05 to 1 mm thick, max. 1 cm <br />Lens: Layer of soil that pinches out laterally <br />Interiayered: Altemating layers ofdiffering soil material <br />Pocket: Erratic, discontinuous deposit of limited e�ent <br />Homogeneous: Soil with uniform color and composition throughout <br />Fissured: Breaks along defined planes <br />Slickensided: Fracture planes that are polishetl or glossy <br />Blocky: Angular soil lumps that resist breakdown <br />Disrupted: Soilthatis broken and mixed <br />Scattered: Less than one per foot <br />Numerous: More than one per foot <br />BCN: Angle between bedding plane antl a plane <br />normal to core axis <br />COMPONENT DEFINITIONS <br />COMPONENT SIZE / SIEVE RANGE COMPONENT SIZE / SIEVE RANGE <br />Boulder: � > 12 inches Sand <br />Cobbles: � 3 to 12 inches Coarse Sand: ��t4 to #10 sieve (4.5 to 2.0 mm) <br />Gravel Medium Sand: :#10 to #40 sieve (2.0 to 0.42 mm) <br />Coarse Gravel: : 3 to 314 inches Fine Sand: c#40 to #200 sieve (0.42 to 0.074 mm) <br />Fine Gravel: � 314 inches to #4 sieve Silt � 0.074 to 0.002 mm <br />Ciay � <0.002 mm <br />PanGEe Terms and Symbols for <br />1 N C O R P O R A T E D Boring and Test Pit Logs <br />Phone: 206.262.0370 <br />TEST SYMBOLS <br />for In Situ and Laboratory Tests <br />listed in "Other Tests" column. <br />ATT Atterberg Limit Test <br />Comp Compaction Tests <br />Con Consolitlafion <br />DD Dry Density <br />DS Direct Shear <br />%F Fines Content <br />GS Grain Size <br />Perm Permeability <br />PP Pocket Penetrometer <br />R R-value <br />SG SpecifcGravity <br />N Torvane <br />TXC Triaxial Compression <br />UCC UnconfnedCompression <br />SYMBOLS <br />Samplelln Situ test types and intervals <br />�2-inch OD Split Spoon, SPT <br />(140-Ib. hammer, 30" tlrop) <br />8 3.25-inch OD Spilt Spoon <br />(300-Ib hammer, 30" drop) <br />�Non-standard penetration <br />test (see boring log for details) <br />, Thin wall (Shelby) tube <br />� Grab <br />� Rock core <br />� Vane Shear <br />MONITORING WELL <br />SZ Groundwater Level at <br />time of tlrilling (ATD) <br />t Static Groundwater Level <br />Cement I Concrete Seal <br />Bentonite grout 1 seal <br />��� Silica sand backfill <br />�� Slotted tip <br />�� Slough <br />Bottom of Boring <br />MOISTURE CONTENT <br />Dry Dusty, dry to the touch <br />Moist Damp but no visible water <br />Wet Visible free water <br />Figure A-1 <br />