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Mountain Coal Company CO - 0038766 SCG Project No.: 304309 <br />Site: West Elk Mine <br />Abstract of Results <br />Test Concentrations: Control (0), 1.9%, 12.5%, 25%, 50%, 100% <br />20 for Daphnia magna <br />Number of Organisms/Concentration: 40 for Fathead minnows <br />Replicates at each Concentration: 4 <br />Test vessel size <br />Exposure volume <br />LC50's <br />Pass/Fail Status <br />Temperature Range (°C) <br />Dissolved Oxygen Range (ml/1) <br />pH range during test <br />Daphnia magna Fathead minnow <br />30m1 250m1 <br />15m1 200m1 <br />70.7% >100% <br />FAIL PASS <br />19.5-20.4 19.1-20.7 <br />6.6-7.7 4.4-7.3 <br />7.9-8.9 7.6-8.9 <br />Control 100% <br />Alkalinity (mg/1 as CaCo,) <br />Hazdness (mg/1 as CaCo,) <br />Total residual chlorine (mg/1) <br />Total ammonia in effluent (mg/1) <br />64/68 2008 <br />89/93 28 <br />N/A <0.01 <br />N/A <1.0 <br />The SeaCrest roup 4 <br />