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COLORADO - CDPS WET TEST REPORT FORM - CHRONIC <br />PERMITI'EE NAME: New Elk Coal Company CDPS NO: CO-0000906 OUTFALL: <br />TYPE TEST:ROUTINE X ACCELERATED TEST SPECIES Ceriodaohnia dubia <br />'fact Q.. At.- Lethality Growth Reproduction <br />CONC. WITH STAT. <br />DIFFERENCE 100% NA 57% <br />PASS/FAIL PASS NA NA <br />1C25 66.09/.(95% C.1. 50.6-79.2) NA 31.1 % (95% C.I. 11.7-35.0) <br />PASSIFAIL PASS NA NA <br />STAT. METHOD USED: STATISTICAL DIIF.: NOEC.. LC?p IC25 ICR METHOD <br />DATE: START 5/710915:30 END 5/15/0915:15 <br />DILUTIONS (% EFFLUENT) <br /> CONTROL 12.5% 25% 57% 75% 100% <br />% SURVIVAL FOR DAY: 1 100 100 100 100 100 50 <br />2 100 100 100 100 90 40 <br />3 100 90 100 100 90 20 <br />4 100 90 100 100 90 0 <br />5 100 90 100 90 80 0 <br />6 100 90 100 90 70 0 <br />7 100 90 100 90 60 0 <br />8 100 90 100 90 50 0 <br />MEAN 3 BROOD TOTAL: 27.9 24.3 25.0 5.2 0.6 0.0 <br />7 DAY MEAN DRY WEIGHT: <br />pH MAXIMIN 8.27/8.03 8.76/8.64 8.9418.85 9.10/9.02 9.21/9.06 9.20/9.12 <br />MEAN HARDNESS (mg/L) RECEIVING WATER: NA EFFLUENT: il RECON WATER. 999 <br />MEAN ALKALINITY (mg/L) RECEIVING WATER: NA EFFLUENT: 1650 RECON WATER: 677 <br />MEANT. AMMONIA as N (mg/L.) INITIAL EFFLUENT: 2.3 FINAL EFFLUENT: NA <br />MEAN T. RESIDUAL CHLORINE (mg/L) 100%: 0.03 RECEIVING WATER USED FOR DILUTIONS? (YIN) ?V <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? (Y/N) <br />IF NO, UST DEVIATIONS FROM TEST SPECIFICATIONS: <br />ANALYST: Jennifer Shanteau SIGNATURE: <br />LABORATORY: GEI Comhants. ImJEcoloeical Division DATE: 5[21/09 <br />COMMENTS: <br />'p.