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Sample Origin West Valley II Gob Pile <br />Material Description Coal Waste <br />Soil Type Coal Waste <br />" 130 <br />120 <br />110 <br />100 <br />U <br />90 <br />Z <br />LU <br />D 80 <br />70 <br />60 <br />50 <br />Test By GS <br />Test Date 5-19-2010 <br />Sample # 1 <br /> <br /> Sieve Percent <br /> TEST RESULTS Size Passina <br /> MAXIMUM DENSITY: 70.5 <br /> OPTIMUM MOISTURE: 16.0% 5° <br /> 4" <br /> - OCK CORRECTION <br /> R <br />: To <br /> MAXIMUM DENSITY: <br />2 <br />f OPTIMUM MOISTURE: <br /> 1 Y4' <br /> 1" 1 <br /> TEST METHOD: ASTM D-698 3/4" <br /> PREP. METHOD: 1/2° : <br /> - <br />- HAMMER: 5 LB <br /> 1 <br />FRACTION USED: 44 ', 3/8" 100 <br />I" _ ... MOLD SIZE: 4" diameter 4 100 <br /> - 10 56 <br /> Specific Gravity: 20 32 <br /> I 40 21 <br />:: <br /> - <br />Limit: <br />100 11 <br />tc <br /> - a--I Index: <br />Plastc <br />ty <br /> 200 7.3 <br /> --.,..._._".. <br />- I C `? ' 0005 <br /> - ........ - <br /> : <br />I <br /> <br />-------- -- ---- -- <br />..-- - . ..--- - ...'--. .. --- -- --- - - `-- <br />r ' - -- - - <br /> - - <br />it Voids Curves <br />Zero kWVoids Curves <br /> -. - ... . ...-,.. . <br />_ <br /> <br />: <br /> <br /> - I-._ ----" I:_ " -- -- -, r_-..I F <br />- ; G <br />s 1 90 <br /> -I -- - .-- <br />I- I <br />- " <br />-1 <br />--; i <br /> <br />G _ <br /> <br />s 1.80 i. <br /> <br />I <br />--- --------- <br />- <br />-------------- <br />- <br /> i <br />Gs 1.70 <br /> 1 r: -- <br /> <br /> --- ---- -- --- <br />- <br /> 17 7717 0 <br />10 <br /> <br />15 20 25 30 <br />MOISTURE - % of DRY WEIGHT <br />GRAND JUNCTION <br />LINCOLN - DeVORE, Inc. <br />Geotechnical Consultants <br />Grand Junction, Colorado <br />35 40 <br />West Elk Mine <br />Somerset, Colorado <br />Oxbow Mining, Inc. <br />Somerset, Colorado <br />Job No. Drawn Date <br />93948-G,t EMM 5-19-2010