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I Client: Mountain Coal Company CO - 0038766 SCG Project No.: 305112 <br />Site: West Elk Mine 017 <br />Abstract of Results <br />Test Concentrations: <br />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 />magna Fathead minnow <br />Test vessel size <br />Exposure volume <br />LC50's <br />Pass/Fail Status <br />30 ml 250 ml <br />15 ml 200 ml <br />54.3% >100% <br />FAIL PASS <br />Temperature Range (°C) <br />Dissolved Oxygen Range (mUL) <br />pH range during test <br />Alkalinity (mg/1 as CaCo,) <br />Hardness (mg/1 as CaCo,) <br />Total residual chlorine (mg/1) <br />Total ammonia in effluent as NH3 (mg/1) <br />19.5-21.0 19.3-20.8 <br />7.0-7.2 63-7.6 <br />8.0-9.1 7.9-8.9 <br />Control <br />(Daphnia m./FH1Vn 100% <br /> <br />69/67 1995 <br />81/94 60 <br /><0.01 <0.01 <br /><1.0 <1.0 <br />The SeaCrest Group 4 <br />