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~ ' GEOTECH I Civil, Structural 8r Geotechnical Engineers <br />___r _..._. ..___. _ _. _.._ v__.. .~ <br />712 South Park Ave. • Montrose. CO 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 ID.ate 10/3/2007 <br />Project Location Garfield County, CO IP~roject # 07-334-GEO <br />Client McClane Canyon Mining, LLC .Sample by BB <br />Test Location Stockpile near sediment pond lfested by MS <br />Sample # Gob #1 <br /> Sieve Analysis ,Atterbera Limits <br /> ASTM C136 / C117 ASTM D4318 <br /> <br />Sieve Opening % Passing <br />(mm) <br />Liquid Uimit (LL) <br />NP <br />3" 76.2 100.0 Plastic Limit (PL) NP <br />3/4" 19.0 93.2 Plasticity Index (PI) NP <br />3/8" 9.5 80.3 <br />#4 4.750 67.7 NP =Non-Plastic <br />#10 2.000 61.3 <br />#40 0.425 40.8 <br />#200 0.075 24.1 Natural Moisture Content (%) = 2 1.7% <br />Soil Description black silty SAND with gravel /gob <br />USCS Classification SM <br /> #200 #40 #10 #4 3!4" 3" <br />100 ~ <br />90 <br />80 <br />70 <br />rn <br />y 60 <br />N <br />a 50 <br />c <br />m <br />40 <br />m <br />a <br />30 <br />20 <br />10 <br />0 <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 = 24.1 % Sand = 43.6 % Gravel = 32.3 <br />~uu <br />