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f~~iGE TO ECH1 <br />-~ ___ ____ ____..~ Civil, Structural & Geotechnical Engineers <br />222 South Park Ave. • Montrose, CO 81401 <br />Ph.: {970) 249-6828 • FAX: (970) 249.0945 <br />Sieve Analvsis and Atterberg Limits <br /> <br />Project Name McClane Canyon Mine Gob Pile Stability Date 9!28/2007 <br />Project Location Garfield Coun , CO (Project # 07-334-GEO <br />Client McClane Canyon Minin , LLC 'Sample by BB <br />Test Location BH#01 @10-11.5' 1f~ested by BAU/JLH <br />Sample # GS#2 <br />Sieve Analvsis <br />• ASTM C136 / C117 <br />Sieve Opening % Passing <br />(mm) <br />3" 76.2 100.0 <br />3/4" 19.0 100.0 <br />3/8" 9.5 93.9 <br />#4 4.750 86.5 <br />#10 2.000 77.0 <br />#40 0.425 66.1 <br />#200 0.075 29.9 <br />#200 #40 #10 #4 3/4" 3" <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br /> <br />0.01 0.1 1 10 <br />Particle Diameter (mm) <br />100 <br />90 <br />80 <br />70 <br />a> <br />~, 60 <br />N <br />!0 <br />°; 50 <br />c <br />m <br />L 40 <br />m <br />a <br />30 <br />20 <br />10 <br />0 <br />Atterberd Limits <br />ASTM D4318 <br />Liquid Limit (LL) 22 <br />Plastic (Limit (PL) 17 <br />Plasticity dndex (PI) 5 <br />Natural Moisture Content (%) = 5.6% <br />Soil Description yellow brown silty, clayey SAND <br />USCS Classification SC-SM <br />100 <br />• <br />• <br />Clay/Silt Fine Medium Coarse Fine Coarse <br />FINES SAND GRAVEL <br />Fines = 29.9 % Sand = 56.6 % Gravel = 13.5 <br />