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COLORADO - CDPS WET TEST REPORT FORM -ACUTE <br />PF.RMITTEE: Powderhorn Coal ComoanX CDPS NO.: CO-0027146 OUTFACE: 001/002 <br />TYPE TEST: ROUTINE: XX ACCELERATED: TEST SPECIES: C. dubia <br />TEST RESULTS: LCso: >100% <br />STATISTICAL METHOD: Binomial <br />TEST TIIvIE & DATE: BEGIN 1045 AM 10/28/99 END 1030 AM 10/30/99 <br />DILUTIONS (% EFFLUENT) <br />MEASUREMENTS 0% 0.2% 25% 50% 75% 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 17 20 19 20 17 <br /> <br /> <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESID. Cl ' (mg/l): <0.1 <br />HARDNESS (mg/I): RECEIVING WATER: EFFLUENT: 120 RECON WATER: 115 <br />ALKALINITY (mg/I): RECEIVING WATER: EFFLUENT: 975 RECON WATER: 85 <br />pH: INITIAL: CONTROL 8.1 100% EFFLUENT 7.9 <br />FINAL: CONTROL 8.3 100% EFFLUENT 8.5 <br />TOTAL AMMONIA AS N (mg/I): INITIAL 100%: <1.0 FINAL 100%: <1.0 <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELINES? YES <br />IF NO, LIST DEVIATIONS FROM TEST SPECIFICATIONS: <br />LABORATORY: COMMERCIAL TESTING & ENGINEERING ANALYST: CL~c,~.`~~- c~-.--Q <br />COMMENTS: <br />4/14/99 <br />COM MERCIgL TESTING dt ENGINEERING CO. <br />Ongmal Copy Waiermar4sa ~~~ <br />For VOpf Protenion <br />F~66 <br />