Laserfiche WebLink
' Mountain Coal Company CO - 0038766 SCG Project No.: 304222 <br />Site: West Elk Mine <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 />Daphnia magna Fathead minnow <br />Test vessel size 30m1 250m1 <br />Exposure volume 15m1 200m1 <br />LC50's 56.5% >I00% <br />Pass/Fail Status FAIL PASS <br />Temperature Range (°C) 19.0-20.8 19.0-21.0 <br />Dissolved Oxygen Range (ml/1) 6.8-10.3 6.6-7.4 <br />pH range during test 8.0-9.3 7.7-9.0 <br /> Control 100% <br />Alkalinity (mg/1 as CaCo,) 66/68 2070/2331 <br />Hazdness (mg/1 as CaCo,) 89/92 24/31 <br />Total residual chlorine (mg/1) N/A <0.01 <br />Total ammonia in effluent (mg/1) N/A <I.0 <br />The SeaCrest Group 4 <br />