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SeaCrest Project Number. 399114 <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE: Mountain Coal CDPS No: CO-0038776 OUTFACE: 013 <br />TYPE TEST: Routine: XX Accelerated: Test Species: Pimephaies promeias, 3 days ofd <br />TEST RESULTS: LC50: >100% STATISTICAL METHOD: Probit <br />Test Time & Date: Begin: 10:30, April 2, 1999 End: 11:00, April 6, 1999 <br />Dilutions (Percent Effluent) <br />Measurements Control <br />0%) 1.9% 12.5% 25% SO% 100% NA <br />No. @ Start of Test 40 40 40 40 40 40 XX <br />No. Live after 24 hours 40 40 40 40 40 40 XX <br />No. Live after 48 hours 40 40 40 39 40 40 XX <br />No. Live after 72 hours 40 40 40 39 40 40 XX <br />No. Live after 96 hours 40 40 40 39 40 40 XX <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: 76 Recon. Water: 87 <br />Alkalinity, mg/L: Receiving Water. NA Effluent: 1850 Recon. Water. 61 <br />pH: Initial -Control: 8.1 100%: 8.2 Final -Control: 7.7 100%: 8.9 <br />Total Ammonia as N, mg/L: Initial - 100%: <1.0 Final - 100%: NA <br />Were Atl Test Conditions In Conformance With Division Guidelines? Yes <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: THE SEACREST GROUP <br />COMMENTS: <br />ANALYST'S NAME(S): Geoff Henderson, Kevin Olmstead <br />SIGNATURE/DATE: .~/~il /1 • U/1/~'( mil' S <br />