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~ GEOTECH <br /> Civil, Structural & Geotechnical Engineers <br /> 222 South Park 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 12/29/2006 <br />Project Location Bowie Mine Gob Pile #3 Project # 06481-002-02 <br />Client Bowie Resources Sample by BB <br />Test Location BG06-02 @25-26.5' Tested by LES <br />Sample # GS15 <br /> Hvdrometer Analvsis Atterbero Limits <br /> ASTM D422 ASTM D4318 <br />Sieve O(mm g %Passing <br />#4 4.75 88.3 <br />#10 2.0 63.9 <br />#40 0.425 82.6 <br />#200 0.075 80.0 <br />Liquid Limit (LL) 33 <br />Plastic Limit (PL) 19 <br />Plasticity Index (PI) 14 <br />Natural Moisture Content (°k) = 13.7% <br />Soil Description dark yellow brown lean CLAY with gravel <br />• USCS Classification CL <br />#200 #40 #10 #4 3/4" 3" <br />100 <br />90 <br />8~ <br />70 <br />CA <br />G <br />'y 60 <br />N <br />A <br />a 50 <br />.. <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 10 100 <br />Particle Diameter (mm) <br />Clay size Silt size Fine Medium Coarse Fine Coarse <br />FINES SAND GRAVEL <br />Clay = 28.6 % Silt = 51.4 % Sand = 8.3 % Gravel = 11.7 <br />