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Aqua-Tox, Inc. <br />4880 Robb Street, Suite 8 <br />Wheat Ridge, CO 80033 <br />loll" <br />(303) 621-4880 www aqua-tox corn <br />........ . 1,-� ACUTE TOXICITY REPORT <br />SAMPLE ID: 2000-87 TEST RESULT LC5c: >100% <br />CLIENT NAME: 20 Mile Coal Company 50% MORTALITY TEST- PASS <br />AT[ LOT #: 031814-2 % SURVIVAL 100%: 100-% <br />SAMPLE DATE: 3/17/2014 TIME: 11:30A ORGANISM: Daphnia magna <br />TEST START, 03-18714 12:OOP ORGANISM AGE: <24_ ho_urs_o__I_d <br />TEST FINISH: 03-20-14 12.00P <br />FYPE OF TEST: Acute, LC,.,,, 48-hour, static, renewal, moderately hard fresh synthetic dilution water <br />) FRESH SYNTHETIC DILUTION WATER CONSTITUENT <br />AMMONIA: ND <br />D.0 <br />7.35 mgJL <br />HARDNESS. 94.44 mg/L <br />pH: <br />7.99 <br />ALKALINITY- 55 74 mgJL <br />CONDUCTIVITY: <br />310 microS <br />CHLORINE: - ND. <br />TEMPERATURE, <br />20.1 deg C <br />URVIVAl- DA I AA DILUTIONS (%) <br />DATE (HOURS) CONTROL (i 25 12.5 25 50 rS 100 <br />3118/2014 INITIAL <br />3/1912014 24 <br />3/20/2014 48 <br />MORTALITY <br />% SURVIVAL <br />20 <br />20 <br />20 <br />2 <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 />20 <br />20 <br />20 <br />20 <br />0 <br />0 <br />0 <br />0 <br />0 <br />100 °l0 <br />----- <br />100% <br />100% <br />100% <br />100% <br />ILY GHEMISTRY - (MIN /MAX) <br />CONTROL 6.25 <br />31013 <br />DO (mql, 1 4/7 <br />pH _8.0/8 <br />TEMPERATURE (deg C: 20.1/2 <br />DILUTIONS (%) <br />12.5 25 50 75 100 <br />47 <br />349/377 <br />377/399 <br />429/445 544/558 648/666 7631785 <br />ALKALINITY- <br />- .3/7.5- <br />7 3/7.5— <br />7 3/7.7 7.2/7.9 7 1,/7 6 TI/7.4 <br />8 1/81 <br />8 1/8.1 <br />- - <br />8.1/8.1 8.018.1 8.0/8.2 7.9/8.2 <br />07 <br />20.1/20.7 <br />R1/20.7 <br />20.1/20.7 20.1/20.7 20.1/20.7 20.1/2071 <br />RY - 2000-84 <br />AMMONIA: <br />0,01 mg /I_ <br />HARDNESS, <br />323.21 mg /L <br />ALKALINITY- <br />312 00 mg/L <br />CHLORINE: <br />ND <br />DOinitiai: 7.08 <br />DOafter aeration: NA <br />pH: 7.89 <br />CONDUCTIVITY: 763 micpoS <br />11 NOEC 11 LOEC 11 CALCULATION METHOD 11 METHOD REFERENCE II <br />100,1111 11 - I (101y <br />IONAL COMMENTS <br />SPEARMAN-KARBER <br />Analysis <br />Conducted by: r Reviewed bv: <br />Date <br />Date, <br />E PA -821-R-02-012 October 2002 pg.78 <br />