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COLORADO - CDPS WET TEST REPORT FORM - CHRONIC <br />PERMITTEE: Twentymile Coal Co. CDPS NO. CO-0034142 OUTFALL: 1 SP <br />TYPE TEST: ROUTINE: XX ACCELERATED: TEST SPECIES: C. dubia <br />TEST RESULTS LETHALITY REPRODUCTION STATISTICAL METHOD <br />Concentration with Statistical Difference >100% >100% Fisher/ Dunnett's <br />Pass/Fail Pass N/A <br />IC25 Point Estimate >100% 44.9% Bootstrap <br />Pass/Fail Pass N/A <br />TEST TIME & DATE START 1000 05/06/08 END 1000 05/13/08 <br />DILUTION (% FFFLUFNT) <br />MEASUREMENTS CONTROL 12.5% 25% 50% 75% 100% <br />Day 1 % Survival 100 100 100 100 100 100 <br />Da 2 100 100 100 100 100 100 <br />Da 3 100 100 100 100 100 100 <br />Da 4 100 100 100 100 100 100 <br />Da 5 100 100 100 100 100 100 <br />Da 6 100 100 100 100 100 100 <br />Day 7 100 100 100 100 100 100 <br /> <br />Mean 3 Brood Total 25.0 29.7 27.0 17.4 19.4 19.7 <br /> <br />H Maximum/Minimum <br /> 8.0/7.3 8.0/7.4 8.1/7.6 8.2/7.8 8.3/7.9 8.4/8.1 <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESIDUAL Cl- (mg/1): <0.1 <br />HARDNESS (mg/1): REC'V WATER: EFFLUENT: 987 RECON WATER: 92 <br />ALKALINITY (mg/I): REC'V WATER: EFFLUENT: 592 RECON WATER: 73 <br />TOTAL AMMONIA (mg/1): INITIAL 100%: <0.1 FINAL 100%: <0.1 <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: SGS NORTH AMERICA INC. ANALYST: SG/KH/SP