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SeaCrest Project Number. 300229 <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE: Seneca Coal Mine CDPS No: CO-0000221 OUTFACE: 012 <br />TYPE TEST: Routine: XX Accelerated: Test Species: Ceriodaphnla dubia <br />TEST RESULTS: LC50: >100% STATISTICAL METHOD: Probit <br />Test Time & Date: Begin: 10:30, May 16, 2000 End: 10:30, May 18, 2000 <br />Dilutions (Percent Effluent) <br />Meawrements Control <br />OYe 72.SY• 259'e 50% 75Ye 100% XX <br />No. (d Start of Test 20 20 20 20 20 20 XX <br />No. Live after 24 hours 20 20 20 20 19 20 XX <br />No. Live after 48 hours 20 20 20 20 19 20 XX <br />No. Live after 72 hours XX XX XX XX XX XX XX <br />No. Live after 96 hours XX XX XX XX XX XX XX <br />Receiving Water Used for Dilution: Yes: No: XX Total Resid. Chlorine, mg/L: 100%: <0.01 <br />Hardness, mglL: Receiving Water: NA Effluent: 504 Recon. Water: 90 <br />Alkalinity, mg/L: Receiving Water: NA Effluent: 182 Recon. Water: 51 <br />pH: Initial -Control: 8.0 100%: 8.5 Final -Control: 7.5 100%: 8.4 <br />Total Ammonia as N, mglL: Initial - 100%: <1.0 Final - 100%: NA <br />Were All Test Conditions In Conformance With Division Guidelines? Yes <br />LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: THE SEACREST GROUP <br />COMMENTS: Effluent aerated prior to test setup. Water supersaturated with dissolved <br />oxygen. <br />ANALYST'S NAME(S): Geoff Henderson <br />SIGNATURE/DA <br />