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SeaCrest Project Number. 300162 <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE: Seneca Coal Company CDPS No: CO-0000221 OUTFACE: 006 <br />TYPE TEST: Routine: XX Accelerated: Test Species: Ceriodaphnia dubia <br />TEST RESULTS: LC50: >100% STATISTICAL METHOD: Probit <br />Test Time 8 Date: Begin: 12:00, April 11, 2000 End: 11:35, April 13, 2000 <br />Dilutions (Percent Effluent) <br />Meawremente Control <br />0% 12.5% 25Y° 50% 75% 100% XX <br />No. ~ Start of Test 20 20 20 20 20 20 XX <br />No. live after 2A hours 20 20 20 20 20 20 XX <br />No. Live after 40 hours 20 20 20 20 20 20 XX <br />Na. Live after 72 hours XX XX XX XX XX XX XX <br />N°. Live otter 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: 1035 Recon. Water: 90 <br />Alkalinity, mg/L: Receiving Water. NA Effluent: 234 Recon. Water: 52 <br />pH: Initial -Control: 7.7 100%: 7.9 Final -Control: 7.8 100%: 8.4 <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): Geoff Henderson, Stacey Breslow <br />SIGNATURE/DATE: /~~1 Xl• ~ !AM ~~a <br />