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Client: Mountain Coal Company CO - 0038766 SCG Project No.: 305222 <br />Site: West Elk Mine 017 <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 (m]/L) <br />pH range during test <br />Alkalinity (mg/1 as CaCo,) <br />Hazdness (mg/1 as CaCo,) <br />Total residual chlorine (mg/I) <br />Total ammonia in effluent as NH3 (mg/1) <br />Daphnia magna Fathead minnow <br />30 ml 250 ml <br />15 ml 200 ml <br />100% >100% <br />FAIL PASS <br />19.0-20.7 19.3-21.0 <br />6.2-7.0 4.5-7.5 <br />8.1-8.9 7.6-9.0 <br />Control <br />(Daphnia »r./FHM) 100% <br />69/60 1872 <br />83/95 50 <br /><0.01 <0.01 <br /><1.0 <1.0 <br />The SeaCrest Group 4 <br />