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SeaCrest Project Number. 399272 <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: Daphnia magna <br />TEST RESULTS: LC50: >100% STATISTICAL METHOD: Probit <br />Test Time & Date: Begin: 10:40, July 15, 1999 End: 10:30, July 17, 1999 <br />Dilutions (Percent Effluent) <br />Measurements Control <br />()% 12.5% 259'° 50% 75% 1009'e NA <br />No. (d Start oT Test 20 20 20 20 20 20 XX <br />No. Lire after 24 hours 20 20 20 20 20 16 XX <br />No. live after 48 hours 18 20 20 20 18 13 XX <br />No. Live after 72 hours XX XX XX XX XX XX XX <br />No. Live after 96 hours XX XX XX )0( XX XX XX <br />Receiving Water Used for Dilution: Yes: No: XX Total Resid. Chlorine, mglL: 100%: <0.01 <br />Hardness, mg/L: Receiving Water. NA Effluent: 46 Recon. Water: 89 <br />Alkalinity, mg/L: Receiving Water. NA Effluent: 1830 Recon. Water. 41 <br />pH: Initial -Control: 7.6 100%: 8.3 Final -Control: 7.4 100%: 8.8 <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: <br />ANALYST'S NAME(S): Jeff Hamilton <br />SIGNATURE/DA <br />