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Sample Origin Gob Pile, West Valley (West Gulch) <br />Material Description Coal <br />Soil Type Coal Waste <br />130 -- <br />Sieve <br />TEST RESULTS size <br />MAXIMUM DENSITY: 93.0 pd <br />OPTIMUM MOISTURE: 15.0 % I 5" <br />411 <br />120 ROCK CORRECTION: 3" <br />MAXIMUM DENSITY: „ <br />Test By GS <br />Test Date 11-24-2008 <br />Sample # 6 <br />Percent <br />I <br />Passing <br /> OPTIMUM MOISTURE: 2 <br /> 1 '/2" <br /> <br /> TEST METHOD: ASTM D-896 A 3/4„ <br /> PREP. METHOD: MOIST <br />110 HAMMER: MANUAL 1/2" <br /> FRACTION USED: 44 3/8" <br /> MOLD SIZE: 4" diameter Ij <br /> <br />I <br />4 j <br />100 <br /> 10 <br />i <br />88 <br /> Specific Gravity: 20 78 <br /> Liquid Limit: ' 40 69 <br /> Plastic Limit: <br />^ 100 Plasiticity Index: N.P. Visual 2 <br />0 57 <br />ct? 0 <br />49.5 <br /> 0.05 I i <br /> 0.005 <br />I <br />90 <br />Z \ ZOro Air Voidti. Ctuves <br />,u GsY,1.94 <br />Gs 1.8?-- <br />;t.7 <br />70 <br />80 <br />50 L r <br />0 5 10 15 20 25 30 <br />MOISTURE - % of DRY WEIGHT <br />"F <br />C <br />-` GRAND JUNCTION <br />LINCOLN - DeVORE, Inc. <br />Geotechnical Consultants <br />Grand Junction, Colorado <br />GOB Pile - WEST GULCH <br />Somerset, Colorado <br />Oxbow Mining Company <br />Somerset, Colorado <br />Job No. Drawn Date <br />93345-GJ EM 111-28-2008