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COLORADO -CDPS WET TEST REPORT FORM -CHRONIC <br />PERMITTEE: Twentvmile Coal Co. CDPS NO. CO-0027154 OUTFACE: 84 Pond D <br />TYPE TEST: ROUTINE: XX <br />ACCELERATED: TEST SPECIES: C. dubia <br />TEST RESULTS LETHALITY REPRODUCTION STATISTICAL METHOD <br />Concentration with Statistical Difference >100% >100% Fisher/Bonferroni t Test <br />Pass/Fail Pass N/A <br />IC~Point Estimate >100% >100% Bootstrap <br />Pass/Fail Pass N/A <br />TEST TIME & DATE START 1000 9/11/2007 END 1000 9/18/2007 <br />DILUTION (% EFFLUENT) <br />MEASUREMENTS CONTROL 12.5% 25% 50% 75% 100% <br />Day 1 % Survival 100 100 100 100 100 100 <br />Day 2 100 100 100 100 100 90 <br />Day 3 100 100 100 100 100 90 <br />Day 4 100 100 100 100 100 90 <br />Day 5 100 100 100 100 100 90 <br />Day 6 100 100 100 100 100 90 <br />Day 7 100 100 100 100 100 90 <br /> <br />Mean 3 Brood Total 20.1 21.6 21.7 21.1 22.4 22.3 <br /> <br />pH (Maximum/Minimum) 7.7/7.2 7.8/7.3 7.8/7.4 7.9~I.4 7.9!7.8 8.1/7.8 <br /> <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESIDUAL CC (mg/I): <0.1 <br />HARDNESS (mq/I): REC'V WATER: EFFLUENT: 850 RECON WATER: 70 <br />ALKALINITY (mg/I): REC'V WATER: EFFLUENT: 207 RECON WATER: 81 <br />TOTAL AMMONIA (mq/I): INITIAL 100%: =0.1 FINAL 100%: =0.2 <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: KH/KW <br />7 <br />