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8/1/2013 INITIAL <br />8/2/2013 24 <br />8/3/2013 48 <br />MORTALITY' <br />SURVIVAL. <br />Aqua -Tox, Inc. <br />20 <br />4880 Robb Street, Suite 8 <br />{ <br />Wheat Ridge, CO 80033 <br />(303) 621 -4880 www.aqua - tox.com <br />20 <br />20 <br />20 <br />' <br />�•�:. <br />ACUTE TOXICITY REPORT <br />-f -- .�.�.1F� "Aar <br />Daphnia magna <br />20 <br />_ <br />20 <br />CLIENT NAME: Twentymile_ Coal Company <br />SAMPLE I.D.: 080113 -1 <br />50 % MORTALITY TEST- Pass <br />TEST RESULT LC50: >100% <br />% SURVIVAL IN 100% DILUTION: 100% <br />20 <br />SAMPLE DATE: 07 -31 -13 TIME: 13:05P <br />CLIENT ID: 2000 -84 <br />ORGANISM: Daphnia magna AGE: < 24 hours old <br />TEST START- 08 -01 -13 09:OOA <br />TEST FINISH: 08 -03 -13 09:OOA <br />TYPE OF TEST: LC50. 48 hours, static, renewal moderately hard fresh synthetic dilution water. <br />0 <br />0 <br />MODERATELY HARD FRESH SYNTHETIC DILUTION WATER CONSTITUENT <br />AMMONIA: ND <br />D.O. 7.22 mg /L <br />HARDNESS: 91.16 mg /L <br />CHLORINE: ND <br />ALKALINITY: 54.25 mg /L <br />TEMPERATURE: 19.7 deg C <br />pH: 8.13 <br />SURVIVAL DATA <br />DILUTIONS ( %) <br />DATE HOURS CONTROL 6.25 <br />12.5 25 50 75 100 <br />8/1/2013 INITIAL <br />8/2/2013 24 <br />8/3/2013 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 />20 <br />20 <br />_ <br />20 <br />20 <br />20 <br />20 <br />20 <br />20 <br />20 <br />20 <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />0 <br />100% <br />100% <br />100% <br />100% <br />100% <br />100% <br />100% <br />) <br />DAILY CHEMISTRY - (MIN /MAX) DILUTIONS ( %) <br />0 6.25 12.5 25 50 75 100 <br />f'ONUUC HVI- Y pn•cros) <br />rrc� ;ern /U <br />PH <br />TEMPERATURF (deg C) <br />337/344 <br />608/661 <br />893/927 <br />1361/15132380/2430 <br />3260/3440 <br />4170/4550 <br />6.9/7.3 <br />6.9/7.4 <br />6.9/7.5 <br />6.917.8 <br />7.0/8.0 <br />7.0/8.4 <br />7.0/8.7 <br />7.8/81 <br />8.1/8.3 <br />8.3/8.5 <br />8.5/8.7 <br />8.618.8 <br />8.6/8.9 <br />8.5/8.8 <br />19.7/20.3 <br />19.7/20.3 <br />19.7/20.3 <br />19.7120.3 <br />19.7/20.3 <br />19.7120.3 <br />19.7/20.3 <br />GENERAL CHEMISTRY - SAMPLE <br />AMMONIA: 0.09 D.O. 8.72 mg /L <br />HARDNESS: 458.78 mg /L CHLORINE: ND <br />ALKALINITY' 728.69 mg /L TEMPERATURE: 19.7 deg C <br />pH: 8.49 D.0 AFTER AERATION: NA <br />ANOEC CALCULATION METHOD METHOD REFERENCE <br />100% SPEARMAN - KARBER EPA - 821 -R -02 -012 Octo�er 2002 pg.78 <br />I <br />ADDITIONAL COMMENTS: <br />`i <br />Analysis <br />Conducted by l Reviewed by . <br />Date. b%� t p _ Date: , ; <br />