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COLORADO - CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE: Powderhorn Coal CompanX CDPS NO.: CO-0027146 OUTFACE: 001/002 <br />TYPE TEST: ROUTINE: XX ACCELERATED: TEST SPECIES: C. dubia <br />TEST RESULTS: LCso: > 100% STATISTICAL METHOD: Binomial <br />TEST TIME & DATE: BEGIN 1215 PM 01/30/01 <br />END 1215 PM 02/01/01 <br />DILUTIONS (% EFFLUENT) <br />MEASUREMENTS 0% 0.2% 25% 50% 75"/0 100% <br /># START OF TEST: 20 20 20 20 20 20 <br /># ALIVE AFTER 24 HRS: 20 20 20 20 20 20 <br /># ALIVE AFTER 48 HRS: 20 20 20 20 20 20 <br /> <br /> <br />RECEIVING WATER USED FOR DII,UTION? NO TOTAL RESID. Cl " (mg/I): <0.1 <br />HARDNESS (mg/1): RECEIVING WATER: EFFLUENT: 40 RECON WATER: 110 <br />ALKALINITY (mg/I): RECEIVING WATER: EFFLUENT: 930 RECON WATER: 85 <br />pH: INITIAL: CONTROL 8.5 100% EFFLUENT 7.6 <br />FINAL: CONTROL 8.4 100% EFFLUENT 9.0 <br />TOTAL AMMONIA AS N (mg/I): INITIAL 100%:.488 FINAL 100%: <1.0 <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />~-~ <br />LABORATORY: COMMERCIAL TESTING & ENGINEERING ANALYST: ~_ ./~-=J <br />COMMENTS: <br />4/14/99 <br />COMMEflC1AL TESTING & ENGINEERING CO. <br />~° Ltd <br />riginel Watennerketl For Vcur Protection e <br />