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<br />~ GEOTECH <br /> Civil, Structural 8 Geotechnical Engineers <br /> <br /> 222 South Perk Ave. • Montrose, CO 81401 <br /> Ph.: (970) 249E828 • FAX: (970) 249-0945 <br /> Hvdrometer Analv sis and Atterberg Limits <br />Project Name Gob Pile Stability Date 1/2/2007 <br />Project Location Bowie Mine Gob Pile #3 Project # 06481-002-02 <br />Client Bowie Resources Sample by BB <br />Test Location BG06-04 @20-21.5' Tested by LES <br />Sample # GS26 <br /> <br /> Hvdrometer Analvsis Atterbera Limits <br /> ASTM D422 ASTM D4318 <br />Sieve O~mm~9 °k Passing <br />#4 4.75 58.1 <br />#10 2.0 42.6 <br />#40 0.425 38.5 <br />#200 0.075 25.9 <br />Liquid Limit (LL) 24 <br />Plastic Limit (PL) 17 <br />Plasticity Index (PI) 7 <br />Natural Moisture Content (%) = 9.7% <br />Soil Description reddish brown silty, clayey GRAVEL with sand <br />USCS Classification GC-GM <br />#200 tF40 #10 M4 314" 3 <br />100 <br />90 <br />80 <br />70 <br />rn <br />c <br />'rn 60 <br />N <br />R <br />a 50 <br />c <br />m <br />40 <br />m <br />a <br />30 <br />20 <br />10 <br />0 <br />0.001 0.01 0.1 1 10 <br />Particle Diameter (mm) <br />Ctay size Silt size Fine Medium Coarse Fine Coarse <br />FINES SAND GRAVEL <br />100 <br />Clay = 9.9 % Silt = 16.0 % Sand = 32.2 % Gravel = 41.9 <br />