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COLORADO - CDPS WET TEST REPORT FORM - CHRONIC <br />PERMITTEE: Twentvmile Coal Co. CDPS NO. CO-0034142 OUTFALL: 5 D <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/ Steel's Many One Ran <br />Pass/Fail Pass N/A <br />IC25 Point Estimate >100% 78.5% Bootstrap <br />Pass/Fail Pass N/A <br />TEST TIME & DATE START 1000 05/06/08 END 1000 05/13/08 <br />DILUTION (%, FFFI t1FNT) <br />MEASUREMENTS CONTROL 12.5% 25% 50% 75% 100% <br />Da 1 % Survival 100 100 100 100 100 100 <br />Da 2 100 100 100 100 100 100 <br />Day 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 />Da 7 100 100 100 100 100 100 <br /> <br />Mean 3 Brood Total 29.0 34.8 34.7 32.7 27.0 10.2 <br /> <br />H Maximum/Minimum 7.2/8.0 7.2/8.1 7.4/8.3 7.7/8.5 8.0/8.7 8.2/9.0 <br /> <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESIDUAL Cl- (mg/1): <0.1 <br />HARDNESS (ma/1): REC'V WATER: EFFLUENT: 35 RECON WATER: 92 <br />ALKALINITY (ma/1): REC'V WATER: EFFLUENT: 809 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