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SeaCrest Project Number. 300095 <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE: Seneca Coal Mine CDPS No: CO-0000221 OUTFACE: 01D <br />TYPE TEST: Routine: XX Accelerated: Test Species: Ceriodaphnia dubia <br />TEST RESULTS: LC50: >100% STATISTICAL METHOD: Probit <br />Test Time & Date: Begin: 11:30, March 7, 2000 End: 11:40, March 9, 2000 <br />Dilutions (Percent Effluent) <br />Measurements Control <br />OY. 12.5% 25% 50% 75% 100% X7t <br />No. ~ Start of Test 2D 20 20 20 20 20 XX <br />No. Live after 24 hours 20 20 20 20 20 20 XX <br />No. Live after 48 hours 19 20 20 19 20 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, mg/L: Receiving Water. NA Effluent: 741 Recon. Water. 90 <br />Alkalinity, mg/L: Receiving Water. NA Effluent: 187 Recon. Water: 53 <br />pH: Initial -Control: 7.6 100%: 8.0 Final -Control: 7.7 100%: 8.1 <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 />LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: THE SEACREST GROUP <br />COMMENTS: Effluent aerated prior to test setup to lower DO -supersaturated with dissolved <br />oxygen. <br />ANALYST'S NAME(S): Geoff Henderson, Rachel Grimmer <br />SIGNATURE/DATE: <br />