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4880 Robb Street, Suite 8 <br />Wheat Ridge, CO 80033 <br />(303) 621-4880 aqua-tox.com <br />IENT NAME: Twentymile Coal Cort pany SAMPLE I.D.: 102108-2 <br />% MORTALITY TEST: Pass TEST RESULT LC50: >100% <br />SURVIVAL IN 100% DILUTION: 100% <br />,MPLE DATE. 10-20-08 TIME: 14:55PM CLIENT ID: Site 62 <br />tGANISW Fathead Minnow AGE: DOH 10-17-08 <br />ST START 10-21-08 10:25AM TEST FINISH: 10-25-08 10:25AM <br />PE OF TEST: LC50, 96 hours, static, renewal moderately hard fresh synthetic dilution water. <br />AMMONIA: <br />HARDNESS: <br />ALKALINITY: <br />pH: <br />10/21/2008 INITIAL <br />10/22/2008 24 <br />10/23/2008 48 <br />10/24/2008 72 <br />10/25/2008 96 <br />MORTALITY- <br />% S URVIVAL: <br />CONTROL 6.25 <br />D.O.: 7.44 mg/L <br />CHLORINE: ND <br />TEMPERATURE: 19.8 deg C <br />DILUTIONS (%) <br />12.5 25 50 75 inn <br />20 20 20 20 20 20 20 <br />20 20 20 20 20 20 20 <br />20 20 20 20 20 20 20 <br />20 20 20 20 20 20 20 <br />20 20 20 20 20 20 20 <br />0 ?0 0 0 0 0 0 <br />100% 100% 100% 100% 100% 100% 100% <br />%ILY CHEMISTRY - (MIN/MAX) DILUTIONS (%) <br />CONTROL 6.25 12.5 25 50 75 100 <br />CONDUCTIVITY (micros) <br />D.O. (mg/L) <br />pH <br />TEMPERATURE (deg C) <br />329/347 584/611 827/858 1232/1278 1983/2250 2930/2990 3640/3710 <br />5.0/7.4 5.2/7.5 5.3/7.6 5.0/7.9 5.8/8.3 5.6/7.9 5.6/8.0 <br />7.5/8.2 7.4/8.1 76/8.2 7.8/8.2 8.0/8.4 8.0/8.3 8.0/8.4 <br />19.6/20.1 19.6/20.1 19.6/201 19.6/20 1 19.6/20 1 19.6/20.1 19.6/20.1 <br />GENERAL CHEMISTRY - SAMPLE <br />AMMONIA. ND D.O.. 7.95 mg/L <br />HARDNESS 1,820.91 mg/L CHLORINE ND <br />ALKALINITY: 435.72 mg/L TEMPERATURE: 19.8 deg C <br />pH: 7.98 D O AFTER AERATION: NA <br />ANOEC CALCULATION METHOD METHOD REFERENCE <br />100% SPEARMAN-KARBER EPA -821-R-02-012 October 2002 pg 78 <br />Analysis <br />Conducted by: 12i g,?- Reviewed by: