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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />PHASE II STABILITY ANALYSIS <br />CAMEO REFUSE DISPOSAL AREA No. 1 <br />POWDERHORN COAL, COMPANY <br />CAMEO, COLORADO <br />MAY, 1994 <br />CONTENTS: PAGE <br />SCOPE 1 <br />BAILING 1 <br />DRILLING AND PIEZOMETER INSTALLATION 4 <br />DRILL HOLE No. 1 7 <br />DRILL HOLE No. 2 8 <br />DRILL HOLE No. 3 9 <br />DRILL HOLE No. 4 9 <br />DRILL HOLE No. 5 10 <br />DRILL HOLE No. 6 10 <br />DRILL HOLE No. 7 11 <br />DRILL HOLE No. 8 12 <br />PIEZOMETER DATA EVALUATION 14 <br />INTERNAL PORE WATER FLOW <br />AND PRESSURE CHARACTERISTICS 14 <br />SECTION A-A 19 <br />SECTION C-C 21 <br />STABILITY ANALYSIS <br />GENERAL 25 <br />MATERIAL STRENGTHS 25 <br />SECTION MODELS: 26 <br />SECTION A-A 26 <br />SECTION C-C 27 <br />STABILITY ANALYSIS RESIILTS 28 <br />CONCLUSIONS AND RECOMMENDATIONS 30 <br />APPENDIX <br />TIME-DRAWDOWN AND RESIDUAL DRAWDOWN PLOTS PLATES 1 - 10 <br />DRILL HOLE/PIEZOMETER LOCATIONS b <br />STABILITY SECTIONS PLATE 11 <br />DRILL HOLE LOGS PLATES 12 - 25 <br />100 SERIES PIEZOMETER DETAIL PLATE 26 <br />200 SERIES PIEZOMETER DETAIL PLATE 27 <br />300 SERIES PIEZOMETER DETAIL PLATE 28 <br />