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<br />.: <br />SeaCrest Project Number: 303130 <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE: Mountain Coal CDPS No: CO-0038776 OUTFACE: 017 <br />TYPE TEST: Routine: XX Accelerated: Test Species: Daphnia magna <br />TEST RESULTS: LC50: >100% STATISTICAL METHOD: Probit <br />Test Time & Date: Begin: 16:30, April 2, 2003 End: 16:30, April 4, 2003 <br />Dilutions (Percent Effluent) <br />Measurements Control <br />0% 12.5% 25% 50% 75% 10D% NA <br />No. @ Start of Test 20 20 20 20 20 20 XX <br />No. Live after 24 hours 20 20 20 20 19 20 XX <br />No. Live after 48 hours 20 20 15 17 18 12 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: 43 Recon. Water: 85 <br />Alkalinity, mg/L: Receiving Water: NA Effluent: 2259 Recon. Water: 87 <br />pH: Initial -Control: 8.7 100%: 8.6 Final -Control: 8.0 100%: 9.0 <br />Total Ammonia as N, mg/L: Initial - 100%: ** Final - 100%: NA <br />Were All Test Conditions In Conformance With Division Guidelines? Yes <br />IF NO, LIST DEVIATIONS FROM TEST S PECIFICATIONS: <br />LABORATORY: THE SEACREST GROUP <br />COMMENTS: ** Ammonia meter our-of-order. Replacement probe on order. <br />ANALYST'S NAME(S): Holly Blankenship, Brett Jeans <br />SIGNATURE/DATE: //YJ~i~ /i" <br />