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UNIFIED SOIL CLASSIFICATION SYSTEM-VISUAL CLASSIFICATION OF SOILS (ASTM D-2488) MAJOR GROUP GROUP NAME DESCRIPTION ' DMSIONS SYMBOL 00"o ee Well-graded gravel Well-graded gravels or gravel-sand .0:0e0a04 GW Well-graded gravel with sand mixtures, little or no fines. 0000 ' GRAVEL 0:0'.0'0,0 Poorly-Waded gravel Poorly-graded gravels or gravel D a0aa G P Poorly-graded gravel with sand sand mixture, Little or no fines. AND O�O�O:�O:�O GRAVELLY a'O'a'O'a Silty gravel Silty gravels,gravel-sand-silt ' SOILS a•a'aya'a GM Silty gravel with sand mixtures. a�a'a�o'a Clayey Clayey gravels,gravel-sand-clay COARSE G C Clayey gravel avel with sand ' GRAINED SOILSSW Well-graded sand Well-graded sands or gravelly Well-graded sand with gravel sands, Little or no fines. ' SANDS P Poorly-graded sand Poorly-graded sands or gravelly Poorly-graded sand with gravel sands,little or no fines. AND SANDY .t;ti'•.ti•••ti:w SK Silty sand Silty sands,sand-silt mixtures. SOILSSilty sand with gravel SC Clayey sand Clayey sands,sand-clay mixtures. ' v Clayey sand with gravel Inorganic silts and v fine ♦��ti��t• Silt;Silt with sand;Silt with gravel B �S •�ti��ti��t sands,rock flour,silty or SILTS *�+ti+��A4 ML Sandy silt;Sandy silt with gravel ty Gravelly silt;Gravelly silt with sand clayey fine sands or clayey i •+k��ti�� silts with sli AND ht ptasticity. Lean clay;Lean day with sand;Lean clay with gravel Inorganic clays of low to medium FINE CLAYS C L Sandy lean day;Sandy lean clay with gravel plasticity,gravelly clays,sandy Gravelly lean clay;Gravelly lean clay with sand clays,silty clays,lean days. GRAINED y% %%,�+ Elastic silt;Elastic sc s silt with sand;Elastic with anic silts,micaceous or ELASTIC ++++++ttt grave Inor B SOILS Sandy elastic silt;Sandy elastic silt with gravel diatamaceaus Fine sandy or silty SILTS MH Gravelly elastic silt;Gravelly elastic silt with sand soils, elastic silts_ ++w+++++ AND Fat clay;Fat clay with sand;Fat clay with gravel Sandy fat clay;Sandy fat clay with gravel Inorganic clays of high plasticity, CLAYS C H Gravelly fat day;Gravelly fat day with sand fat clays. Organic soil;Organic soil with sand;Organic soil with gravel Organic silts and organic silt- O L/O H Sandy organic soil;Sandy organic soil with gravel clays of low plasticity. Gravelly organic soil;Gravelly organic soil with sand Organic clays of medium to high ' HIGHLY plasticity. ORGANIC SOILS P t Peat feat and other highly organic 6soils. WELL CONSTRUCTION EXPLANTION SOIL BORING NO'T'ES: SANDS &GRAVELS BLOWS/FT SILTS & CLAYS BLOWS/FF Blank well casing Blow count represents the number of blows of a Neat cement or 14G-lb hammer falling 30 inches per blow required VERY LOOSE 0 - 5 SOFT 0 - 5 t thro sand slurry seal to drive a sampler ugh the Last 12 inches of an LOOSE 5 - 12 FIRM 5 - 10 18-inch penetration Bentonite seal No DENSE 12 - 37 STIFF 10 - 24 No warranty is provided as to the continuity of soil strata between borings. Logs represent DENSE 37 - 62 VERY STIFF 20 - 40 the soil section observed at the boring location VERY DENSE OVER 62 HARD OVER 40 _ Well sandpack on the date of drilling only. = 5-Sampler sank into medium under the weight of the hammer(no blow count) = Approximate stabilized water level Well screen P-Sampler was pushed into medium by drilling rig (no blow count) 4 Approximate fust encountered water level NR - No Recovery {' CLEARWATER solL BOARNIDNG LOG APPENDIX C WELL CONSTRUCTION DIAGRAM PLATE Group, Inc. LEGEND C-I-