Laserfiche WebLink
Aqua-Tox, Inc. <br /> 4880 Robb Street, Suite 8 <br />..:- Wheat Ridge, CO 80033 <br /> (303) 621-4880 aqua-tox.com <br />- ACUTE TOXICITY REPORT <br /> Pimephales promelas - Fathead Minnow <br />CLIENT NAME: 20-Mile Coal Company SAMPLE I.D.: 012811-2 <br />50 % MORTALITY TEST: Pass TEST RESULT LC50: >100% <br />% SURVIVAL IN 100% DILUTION: 90% <br />SAMPLE DATE: 01-27-11 TIME: 15:30P CLIENT ID: Site 62 <br />ORGANISM: Fathead Minnow AGE: DOH 01-21-11 <br />TEST START: 01-28-11 12:40P TEST FINISH: 02-01-11 12:40P <br />TYPE OF TEST: LC50. 96 hours, static, renewal, moderately hard fresh synthetic dilution water. <br />MODERATELY HARD FRESH SYNTHETIC DILUTION WATER CONSTITUENT <br />AMMONIA: ND D.O.: 7.07 mg/L <br />HARDNESS: 98.60 mg/L CHLORINE: ND <br />ALKALINITY: 59.78 mg/L TEMPERATURE: 20.3 deg C <br />pH: 7.91 <br />SURVIVAL DATA DILUTIONS (%) <br />DATE (HOURS)CONTROL 6.25 12.5 25 50 75 100 <br />1/28/2011 INITIAL <br />1/29/2011 24 <br />1/30/2011 48 <br />1/31/2011 72 <br />2/1/2011 96 <br />MORTALITY: <br />% SURVIVAL: <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 19 <br />20 20 20 20 20 20 18 <br />0 0 0 0 0 0 2 <br />100% 100% 100% 100% 100% 100% 90% <br />DAILY CHEMISTRY - (MIN/MAX) DILUTIONS (%) <br />CONTROL 6.25 12.5 25 50 75 100 <br />CONDUCTIVITY (micros) 308/329 827/845 1386/1418 1844/1877 2320/2360 3330/3370 4310/4350 <br />D.O. (mg/L) 6.8/7.1 6.9/7.2 7.0/7.3 7.0/7.4 7.1/7.5 7.1/7.6 7.1/7.7 <br />pH 7.5/7.9 7.5/8.0 7.6/8.1 7.6/8.2 7.6/8.3 7.7/8.4 7.718.5 <br />TEMPERATURE (deg C) 19.5/20.4 19.5/20.4 19.5/20.4 19.5/20.4 19.5/20.4 19.5/20.4 19.5/20.4 <br />I i <br />GENERAL CHEMISTRY - SAMPLE <br />AMMONIA: 0.06 mg/L D.O.: 7.75 mg/L <br />HARDNESS: 2,539.10 mg/L CHLORINE: ND <br />ALKALINITY: 616.92 mg/L TEMPERATURE: 20.3 deg C <br />pH: 7.68 D.O AFTER AERATION: NA <br />* t? ;ANOEC ";? ?arCALC.ULATIO.N<METHOD,:.A+ ? - '= F= METHOD REFERENCEus w ; <br />75% SPEARMAN-KARBER EPA -821-R-02-012 October 2002 pg.78 <br />ADDITIONAL COMMENTS: <br />Analysis <br />Conducted by: Reviewed by, <br />Date: Z l( Date: Z