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Aqua -Tox, Inc. <br />4880 Robb Street, Suite 8 <br />■.�.... :- Wheat Ridge, COI 80033 <br />(303) 621 -4880 www,gqua -tox corn <br />Yom, 1 y „ =•"`` <br />ACUTE TOXICITY REPORT <br />Daphnia magna <br />SAMPLE ID: 2000 -115 TEST RESULT LC50: >100% <br />CLIENT NAME: Twenty Mile Coal Company. 50% MORTALITY TEST: PASS <br />ATI LOT #: 033115 -1 % SURVIVAL 100 0/J,: 100% <br />SAMPLE DATE: 3/30/2015 TIME: 09:OOA ORGANISM{: Daphnia manna <br />TEST START: 03/31/2015 10:50A ORGANISM AGE: <24 hours old <br />TEST FINISH: 04/02/2015 10:50A <br />i <br />TYPE OF TEST: Acute, LCm, 48 -hour, static, renewal, moderately hard fresh synthetic dilution' water <br />MODERATELY HARD FRESH SYNTHETIC DILUTION WATER CONSTITUENT <br />AMMONIA: ND D.O.: 6.89 mg /L <br />HARDNESS: 96.70 mg /L pH: 7.85 <br />ALKALINITY: 56.19 mg /L CONDUCTIVITY: 331 microS <br />CHLORINE: ND TEMPERATURE: 19.7 deg C <br />SURVIVAL DATA DILUTIONS ( %) <br />DATE HOURS CONTROL 6.25 12.5 25 50 75 100 <br />3/31/2015 INITIAL <br />4/1/2015 24 <br />4/2/2015 48 <br />MORTALITY <br />% SURVIVAL <br />20 <br />20 <br />20 <br />20 <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 />20 <br />20 <br />19 <br />20 <br />20 <br />1 <br />1 0 <br />1) <br />0 <br />19.7/20.4 <br />0 <br />0 <br />95% <br />100% <br />100% <br />100% <br />4—+100% <br />100% <br />DAILY CHEMISTRY - (MIN /MAX) DILUTIONS ( %) <br />CONTROL 6.25 12.5 25 50 75 100 <br />CONDUCTIVITY (microS) <br />n 0, (mgl) <br />pH <br />TEMPERATURE (deg C) <br />326/333 <br />489/501 <br />687/702 <br />1020/1038 <br />1700/1716 <br />2420/2460 <br />3090/3110 <br />6.9/7.4 <br />7.0/7.4 <br />7.1/7.4 <br />7.2/7.5 <br />7.3/7.6 <br />7.4/7.7 <br />7.5/7.8 <br />7.8/8.3 <br />7.8/8.4 <br />7,9/8.4 <br />7.9/8.5 <br />7.9/8.5 <br />8.0/8.6 <br />8.0/8.7 <br />19.7/20.4 <br />19.7/20.4 <br />19.7/20.4 <br />19.7/20.4 <br />19.7/20.4 <br />19.7/20.4 <br />19.7/20.4 <br />GENERAL CHEMISTRY - 2000 -115 <br />AMMONIA: ND DOiniUai: 7.76 mg /L <br />HARDNESS: 303.70 mg /L DOafleraeration: NA <br />ALKALINITY: 771.92 mg /L pH:_ 8.28 <br />CHLORINE: ND CONDUCTIVITY: 3090 microS <br />NOEC�j LOEC CALCULATION METHOD C METHOD REFERENCE <br />100% >100% SP EAR MAN -KAR BE R EPA - 821 -R -02 -012 October 2002 pg.78 <br />ADDITIONAL COMMENTS: <br />Analys y� �� / Ni onducted by: Reviewed b J <br />Date: _ c - . i.5 Date: Af <br />. <br />