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LTA COMMEPCIALTEETING d ENGINEENINOCO. <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMTITEE: Twentymile Coal Co. CDPS NO.: CO-0042161 OUTFACE: FCBH-115 <br />TYPE TEST: ROUTINE: ACCELERATED: XX TEST SPECIES: D. manna <br />TEST RESULTS: LCso: >100% STATISTICAL METHOD: Probit <br />TEST TIME & DATE: BEGIN 0815 AM 03/04/03 END 0825 AM 03/06/03 <br />DILUTIONS (% EFFLUENT) <br />MEASUREMENTS 0% 12.5% 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 20 20 20 19 17 <br /> <br /> <br />RECEIVING WATER USED FOR DILUTION? NO TOTAL RESID. Cl - (mg/1): <0.1 <br />HARDNESS (mg/I): RECEIVING WATER: EFFLUENT: 530 RECON WATER: 210 <br />ALKALINITY (mg/1):RECETVING WATER: EFFLUENT: 925 RECON WATER: 165 <br />pH: INITIAL: CONTROL 8.5 100% EFFLUENT 8.4 <br />FINAL: CONTROL 8.1 100% EFFLUENT 8.5 <br />TOTAL AMMONIA AS N (mg/1): INITIAL 100%: X3.0 FINAL 100%: X3.0 <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: t~~ <br />COMMENTS: Accelerated test #2 <br />4/14/99 <br />