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,r. ---� Aqua -Tox, Inc. <br />4880 Robb Street, Suite 8 <br />Wheat Ridge, CO 80033 <br />(:.303)62'1-4880 www aqua -tox corn <br />ACUTE TOXICITY REPORT <br />SAMPLE ID: <br />2000 -87 <br />TEST RE =SULT LC50: <br />>100% <br />CLIENT NAME: <br />20 Mile Coal Cortipany <br />50% MORTALITY TEST: <br />PASS <br />ATI LOT* <br />051614••1 <br />% SURVIVAL 100 %: <br />100% <br />SAMPLE DATE: <br />5/15/2014 TIME: 14:OOP <br />ORGANISM: <br />Daphnia magna <br />TEST START: <br />05 -16 -14 13:25PI <br />ORGANISM AGE: <br /><24 hours old <br />TEST FINISH: <br />05 -18 -14 13:25Pi <br />19 <br />20 <br />TYPE OF TEST: Acute, LCSn, 48 -hour, static, renewal moderately hard fresh synthetic dilution waie <br />1 <br />19.4/20.0 <br />MODERATELY HARD FRESH SYNTHETIC DILUTION WATER CONSTITUENT <br />AMMONIA: <br />N'D <br />D.O.. <br />7.03 mg /L <br />HARDNESS: <br />97.75 mg /L. <br />pH <br />8.02 <br />ALKALINITY: <br />57.60. mg /L <br />CONDUCTIVITY <br />308 microS <br />CHLORINE: <br />ND <br />TEMPERATURE: <br />19.4 deg C <br />SURVIVAL DATA DILUTIONS ( %) <br />DATE H( OURS) CONTROL 6.25 12.5 25 50 75 100 <br />5/16/2014 INITIAL <br />5/17/2014 24 <br />5/18/2014 48 <br />MORTALITY <br />% SURVIVAL <br />20 <br />25 <br />451 <br />20 <br />20 <br />20 <br />20 <br />20 <br />20 <br />1r <br />7.1/7.4 <br />— 20 <br />20 <br />20 <br />19 <br />20 <br />19 <br />19 <br />8.0/8.4 <br />20 <br />20 <br />20 <br />19 <br />20 <br />1 <br />1 <br />19.4/20.0 <br />0 <br />0 <br />0 <br />1 <br />0 <br />95% <br />99% <br />100% <br />100% <br />100% <br />95% <br />100% <br />DAILY CHEMISTRY - (MIN /MAX) DILUTIONS ( %) <br />CONTROL 6.�5 12.5 25 50 75 100 <br />CONDUCTIVITY (micros) <br />D O (mg /L) <br />pH <br />TEMPERATURE (deg C) <br />3081321 <br />422 <br />451 <br />801/829 <br />1588/1614 <br />2470/2500 <br />3320/3360 <br />4330/4370 <br />7.0/7.4 <br />7.017.3 <br />7.1/7.4 <br />7.1/7.5 <br />72/7.6 <br />_- 7.3177 _ <br />7.4/7.8 <br />8.0/8.3 <br />8.118.2 <br />8.1/8.3 <br />8.0/8.4 <br />8.0/8.5 <br />7.9/8.6 <br />7.8/8.7 <br />19.4120.0 <br />19.4!20.0 <br />19.4/20.0 <br />19.4/20.0 <br />19.4/20.0 <br />19.4/20.0 <br />19.4/20.0 <br />NERAL CHEMISTRY - 2000 -87 <br />AMMONIA: 0.02 1mg /L <br />HARDNESS: 1097;45 mg /L <br />ALKALINITY: 279.2,1 mg /L <br />CHLORINE: ND <br />NOEC —1 LOEC C <br />100% >100% <br />DITIONAL COMMENTS: <br />Analysis �,• <br />Conducted by: <br />Date: <br />DOinitiai 7.83 _ <br />DOafter aeration: NA <br />pH: 8.27 <br />CONDUCTIVITY: 4330 microS <br />LCULATION METHOD C METHOD REFERENCE <br />SPEARMAN- KARBER F2 October 2002 pg.78 <br />Reviewed by: <br />Date: <br />