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SeaCrest Project Number. 399119 <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE: Peabody Coal CDPS No: 00.0000221 OUTFACE: 006 <br />TYPE TEST: Routine: XX Accelerated: Tesf Species: Cerlodaphnla dubla <br />TEST RESULTS: LC50: >100°.6 STATISTICAL METHOD: Probit <br />Test Time & Date: Begin: 14:10, April 6, 1999 End: 13:50, April 8, 1999 <br />Dilutions (Percent Effluent) <br />Measurements Control <br />0% 12.5% 2S% 50% 75% 100% XX <br />No. @ STart oT Test 20 20 20 20 20 20 XX <br />No. Live after 24 hour; 20 20 20 20 20 20 %X <br />No. Live eRer 48 hours 20 19 20 20 20 20 XX <br />No. Live efler 72 hours XX XX XX xX XX XX XX <br />No. Live eRer 98 hours XX XX Xx XX . xX XX XK <br />Receiving Water Used for Dilution: Yes: No: XX Total Resid. Chlorine, mg/L: 100%: <0.01 <br />Hardness, mg/L: Receiving Water. NA Effluent: 1577 Recon. Water. 89 <br />Alkalinity, mg/L: Receiving Water. NA Effluent: 346 Recon. Water: 39 <br />pH: Initial -Control: 7.9 100°J°: 8.4 Final -Control: 7.7 100%: 8.2 <br />Total Ammonia as N, mg/L: Initial - 100%: <1.0 Final - 100%: NA <br />Were All Test Conditions In Conformance With Division Guidelines? Yes <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: THE SEACREST GROUP <br />COMMENTS: Sample supersaturated when arrived at lab, dissolved oxygen >9.0 mg/L. <br />Sample aerated prior to test set-up to lower DO. <br />ANALYST'S NAME(S): Robert <br />SIGNATUREiDA <br />