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RELATIVE JSITY/CONSISTENCY TEST SYMBOLS <br /> for In Situ and Laboratory Tests <br /> SAND/GRAVEL SILT/CLAY listed in"Other Tests"column. <br /> SPT Approx.Relative SPT Approx.Undrained Shear ATT AtterbergLimit Test <br /> Density N-values Density(%) Consistency N-values Strength(psf) <br /> Comp Compaction Tests <br /> Very Loose <4 <15 Very Soft <2 <250 Con Consolidation <br /> Loose 4 to 10 15-35 Soft 2 to 4 250-500 DD Dry Density <br /> Med.Dense 10 to 30 35-65 Med.Stiff 4 to 8 500-1000 DS Direct Shear <br /> Dense 30 to 50 65-85 Stiff 8 to 15 1000-2000 %F Fines Content <br /> Very Dense >50 85-100 Very Stiff 15 to 30 2000-4000 GS Grain Size <br /> Hard >30 >4000 Perm Permeability <br /> PP Pocket Penetrometer <br /> UNIFIED SOIL CLASSIFICATION SYSTEM R R-value <br /> MAJOR DIVISIONS GROUP DESCRIPTIONS SG Specific Gravity <br /> ,714 GW Well-graded GRAVEL TV Torvane <br /> Gravel GRAVEL(<5%fines) TXC Triaxial Compression <br /> 50%or more of the coarse ab C GP Poorly-graded GRAVEL <br /> fraction retained on the#4 UCC Unconfined Compression <br /> •sieve.Use dual symbols(eg. ° 1,(3 GM Silty GRAVEL <br /> GP-GM)for 570 to 12%fines. GRAVEL(>12%fines) 'e <br /> SYMBOLS <br /> GC Clayey GRAVEL <br /> =�. Sample/In Situ test types and intervals <br /> -; SW Well-graded SAND <br /> Sand SAND(<5%fines) zi' 2-inch OD Split Spoon,SPT <br /> 50%or more of the coarse ' SP Poorly-graded SAND J� (140-lb.hammer,30"drop) <br /> fraction passing the#4 sieve. <br /> Use dual symbols(eg. SM Silty SAND <br /> for 5%to 12%fines.g SP-SM) SAND(>12%fines) <br /> SC Clayey SAND 3.25-inch OD Spilt Spoon <br /> (300-lb hammer,30"drop) <br /> ML SILT <br /> Liquid Limit<50 CL Lean CLAY Non-standard penetration <br /> Silt and Clay •-_-1:_ OL Organic SILT or CLAY test(see boring log for details) <br /> 50%or more passing#200 sieve MH Elastic SILT Thin wall(Shelby)tube <br /> Liquid Limit>50 CH Fat CLAY , <br /> OH Organic SILT or CLAY <br /> -,rnr 3, Grab <br /> Highly Organic Soils ___ PT PEAT <br /> Notes: 1. Soil exploration togs contain material descriptions based on visual observation and field tests using a system <br /> modified from the Uniform Soil Classification System(USCS).Where necessary laboratory tests have been Rock core <br /> conducted(as noted in the"Other Tests"column),unit descriptions may include a classification.Please refer to the <br /> discussions 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. Vane Shear <br /> Other symbols may be used where field observations indicated mixed soil constituents or dual constituent materials. <br /> DESCRIPTIONS OF SOIL STRUCTURES <br /> Layered: Units of material distinguished by color and/or Fissured: Breaks along defined planes MONITORING WELL <br /> composition from material units above and below <br /> Slickensided: Fracture planes that are polished or glossy SZ Groundwater Level at <br /> Laminated: Layers of soil typically 0.05 to 1mm thick,max.1 cm Blocky: Angular soil lumps that resist breakdown time of drilling(ATD) <br /> 1 Static Groundwater Level <br /> Lens: Layer of soil that pinches out laterally Disrupted: Soil that is broken and mixed <br /> Cement/Concrete Seal <br /> Interlayered: Alternating layers of differing soil material Scattered: Less than one per foot <br /> :4[ <br /> Pocket: Erratic,discontinuous deposit of limited extent Numerous: More than one per foot Bentonite grout/seal <br /> Homogeneous: Soil with uniform color and composition throughout BCN: Angle between bedding plane and a plane Silica sand backfill <br /> normal to core axis <br /> COMPONENT DEFINITIONS Slotted tip <br /> N U <br /> N COMPONENT SIZE/SIEVE RANGE COMPONENT SIZE/SIEVE RANGE • Slough <br /> O <br /> tf" Bottom of Boring <br /> ,- Boulder: >12 inches Sand <br /> c <br /> 0 Cobbles: 3 to 12 inches Coarse Sand: #4 to#10 sieve(4.5 to 2.0 mm) MOISTURE CONTENT <br /> 0 <br /> z Gravel Medium Sand: #10 to#40 sieve(2.0 to 0.42 mm) Dry Dusty,dry to the touch <br /> a Coarse Gravel: 3 to 3/4 inches Fine Sand: #40 to#200 sieve(0.42 to 0.074 mm) Moist Damp but no visible water <br /> 0. Fine Gravel: 3/4 inches to#4 sieve Silt 0.074 to 0.002 mm Wet Visible free water <br /> 0 Clay <0.002 mm <br /> 0 <br /> J <br /> u, <br /> w GE® Terms and Symbols for <br /> � INCORP � RATEo Boring and Test Pit Logs Figure A-1 <br /> a Phone: 206.262.0370 � G <br /> (t - <br /> 1/a I <br />