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L~~ COMMERCIALTEETINO 8 ENOINEERINOCO. <br />COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />PERMITTEE: Twentmvle Coal Co. CDPS NO.: CO-0042161 OUTFACE: FCBH-115 <br />TYPE TEST: ROUTINE: ACCELERATED: XX TEST SPECIES: D. magna <br />TEST RESULTS: LCso: >100% STATISTICAL METHOD: Probit <br />TEST TIME & DATE: BEGIN 0820 AM 04/01/03 END 0915 AM 04/03/03 <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 15 14 11 <br /> <br /> <br />RECEIVING WATER USED FOR DII.UTION? NO TOTAL RESID. CI - (mg/1): <0.1 <br />HARDNESS (mg/1): RECEIVING WATER: EFFLUENT: 795 RECON WATER: 200 <br />ALKALINITY (mg/1):RECEPJING WATER: EFFLUENT: 1010 RECON WATER: 160 <br />pH: INITIAL: CONTROL 8.6 100% EFFLUENT 8.1 <br />FINAL: CONTROL 8.5 100% EFFLUENT 8.5 <br />TOTAL AMMONIA AS N (meJl): INTfIAI,100%: X3.0 FINAL 100%: a3.0 <br />WERE ALL TEST CONDTfIONS IN CONFORMANCE WTfH DIVLSION GUIDELINES? YES <br />IF NO, LEST DEVIATIONS FROM TEST SPECIFICATIONS: <br />~~// ~~~~ <br />LABORATORY: COMMERCIAL TESTING & ENGINEERING ANALYST: (it.t.~.....~ <br />COMMENTS: Accelerated test #5 <br />4/14/99 <br />