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COLORADO - CDiPS WET TEST REPORT FORM - CHRONIC <br />Permitee- Twentymile Coal Company - Site 5D <br />CDPS Number: CO - 034142 <br />Outfall: Site 5D 2nd Quarter 2013 <br />Type of Test: Routine - Annual Lot #: 061113 -1abc <br />Test Species: Ceriodaphnia dubia <br />Test Results <br />Survival <br />Reproduction <br />Statistical Method <br />IC25 Point Estimate <br />>100% <br />>100% <br />Linear Interpolation <br />Pass /Fail <br />PASS <br />NA <br />Concentration with Leas[ Statistical Difference (LOEC) <br />>100% <br />>100% <br />Fisher's Exact Test <br />Pass /Fail <br />PASS <br />NA <br />Concentration with least Slatistu:al Difference (NOEC) <br />100% <br />100% <br />Dunnett's Test <br />Pass /Fail <br />PASS <br />NA <br />Ceriodaphnia dubia Daily (Percent Survival ( %) <br />Receiving Water used for dilution? NO Total Residual Chlorine, ND <br />Hardness (mg /L) <br />Control <br />12.5% <br />25% <br />50% <br />75% <br />100% <br />! Initial <br />100 <br />100 <br />100 <br />100 <br />100 <br />100 <br />Day <br />100 <br />100 <br />100 <br />100 <br />100 <br />100 <br />Day 2 <br />100 <br />100 <br />100 <br />100 <br />100 <br />100 <br />Day 3 <br />100 <br />100 <br />10o <br />100 <br />100 <br />100 <br />Day 4 <br />100 <br />100 <br />100 <br />100 <br />100 <br />100 <br />Day 5 <br />100 <br />100 <br />100 <br />100 <br />100 <br />100 <br />Day 6 <br />loo <br />100 <br />90 <br />100 <br />100 <br />100 <br />Day 7 _ —_ <br />100 <br />100 <br />90 <br />100 <br />100 <br />100 <br />Mean 3 Brood Total <br />33.1 <br />35.7 <br />33.4 <br />353 <br />34.9 <br />30.1 <br />—T <br />pH (minimum /maximum) <br />8.0/8.3 <br />8.0/8.6 <br />8.0/8.8 <br />7.9/9.0 1 <br />7.9/9.1 <br />77/9.1 <br />Receiving Water used for dilution? NO Total Residual Chlorine, ND <br />Hardness (mg /L) <br />Rec Water <br />NA <br />Effluent <br />54.71 <br />MHFSW <br />88.98 <br />Alkalinity (mg /L) <br />Rec Water <br />NA <br />Effluent <br />749.11 <br />MHFSW <br />52.68 <br />Ammonia (mg/L) <br />Rec Water <br />NA <br />Effluent <br />0.07 <br />MHFSW <br />ND <br />Were all test conditions in conformance with division guidelines? YES <br />If "NO ", list deviations from test specification. NA <br />Laboratory: Aqua -Tox, Inc. <br />Analyst(s): <br />Jeffs jlr Date, <br />Jason Dix Date <br />