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~ - ~ • GEOTECH ~~ <br />___ __ ___________________~ Civil, Structural & Geotechnical Engineers <br />- -- _ <br />222 South Park Ave. • Montrose, GO 81401 <br />Ph.: (970) 249.6828 • FAX: (970) 249.0945 <br />Sieve Analysis and Atterberg Limits <br />Project Name McClane Canyon Mine Gob Pile Stability Date 9/28/2007 <br />Project Location Garfield County, CO Project # 07-334-GEO <br />Client McClane Canyon Mining, LLC Sample by BB <br />Test Location BH#03 @20-21.5' lfested by BAU <br />Sample # GS#15 <br /> <br /> Sieve Analysis Atterbera Limits <br /> ASTM C136/C117 ASTM D4318 <br /> <br />Sieve Opening °~O <br />(mm) Passing <br />Liquid limit (LL) 23 <br />3" 76.2 100.0 Plastic (Limit (PL) 15 <br />3/4" 19.0 100.0 Plasticiky ilndex (PI) 8 <br />3/8" 9.5 100.0 <br />#4 4.750 99.5 <br />#10 2.000 97.9 <br />#40 0.425 95.2 <br />#200 0.075 61.5 Natural Moisture Content (%) = 6.5% <br />Soil Description brown sandy lean CLAY <br />USCS Classification CL <br /> #200 #40 #10 #4 3/4" 3" <br />100 <br />90 <br />80 <br />70 <br />rn <br />-~~, 60 <br />M <br />!6 <br />w 50 <br />d <br />40 <br />d <br />a <br />30 <br />20 <br />10 <br />0 <br /> <br />0.01 0.1 1 10 <br />Particle Diameter (mm) <br />Clay/Silt Fine Medium Coarse Fine Coarse <br />FINES SAND GRAVEL <br />Fines = 61.5 % Sand = 38.0 % Gravel = 0.5 <br />1UU <br />