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----- <br />Aqua -Tox, Inc. <br />20 <br />20 <br />4880 Robb Street, Suite 8 <br />20 <br />," ., <br />Wheat Ridge, CO 80033 <br />�- <br />(303) 621 -4880 www,aqua- t0X.GDrn <br />20 <br />19 <br />20 <br />19 <br />.>� <br />ACUTE: TOXICITY REPORT <br />0 <br />rir,C;, r;r <br />Daphnia magna <br />20 <br />SAMPLE ID: 2000 -84 <br />TEST RESULT LC50: >100% <br />2 <br />CLIENT NAME: 20 Mile Coal Corppany <br />50% MORTALITY TEST PASS <br />1 <br />ATI LOT #: 051614 -2 <br />% SURVIVAL 100 %: 100% <br />0 <br />SAMPLE DATE: 5/15/2014 TIME: 14:30P ORGANISM: Daphnia magna <br />L 100% <br />TEST START: 05 -16 -14 13:50PI <br />ORGANISM AGE: <24 hours old <br />1 100% 1 <br />TEST FINISH: 05 -18 -14 13:50PI <br />1 100% <br />TYPE OF TEST: Acute,_LCS,,, 48 -hour, qt tic, renewal, moderately hard fresh synthetic dilution water <br />MODERATELY HARD FRESH SYNTHETIC DILUTION WATER CONSTITUENT <br />AMMONIA: _ND <br />D.O.: 7.03 mg /L <br />HARDNESS: 97.'7 mg/ L <br />pH: 8.02 <br />ALKALINITY: 57.69 mg /1- <br />CONDUCTIVITY: 308 microS <br />CHLORINE: ND <br />TEMPERATURE: 19.4 deg C <br />SURVIVAL DATA <br />DILUTIONS ( %) <br />DATE (HOURS) CONTROL 6.25 <br />12.5 25 50 75 100 <br />5116/2014 INITIAL <br />5/17/2014 24 <br />5/18/2014 48 <br />MORTALITY <br />% SURVIVAL <br />20 <br />20 <br />20 <br />20 <br />20 <br />20 <br />20 <br />19 <br />20 <br />20 <br />19 <br />20 <br />19 <br />20 <br />18 <br />0 <br />20 <br />19 <br />20 <br />19 <br />20 <br />2 <br />p <br />0 <br />1 <br />0 <br />1 <br />0 <br />90% <br />L 100% <br />100% <br />95% <br />1 100% 1 <br />95% <br />1 100% <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 />308/317 <br />361'J369 <br />425/440 <br />683/701 <br />1313/1346 <br />1902/1937 <br />2510/2540 <br />7.0/7.3 <br />7 17.4 <br />7.3/7.5 <br />7-4/77 <br />7.5/7.9 <br />7.6/8.1 <br />7.7/8.3 <br />8.0/8.2 <br />^8.1V8.2 <br />8.1/8.3 <br />8.2/8.4 <br />8.2/8.5 <br />8.3/8.6 <br />8.3/87 <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 />19.4/20.0 <br />GENERAL CHEMISTRY - 2000 -84 <br />AMMONIA: 0.12 mg /L DOinitia6 8.11 mg /L <br />HARDNESS: 1589121 mg /L DOafteraeration NA <br />ALKALINITY: 582.86 mg /L pH: 8.27 <br />CHLORINE: ND CONDUCTIVITY: 2510 microS <br />NOEC LOEC CALCULATION METHOD C METHOD REFERENCE —� <br />100% >100% SPEARMAN- KARBER EPA- 821 -R -02 -012 October 2002pg.78 <br />ADDITIONAL COMMENTS: <br />Analysis <br />Conducted by: , - r� ��`- , , Reviewed by: <br />y <br />Date: Date: �i - <br />