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COLORADO -CDPS w ET TEST REPOR`t' FORM -ACUTE <br />PERMTI'TEE: Powderhorn Coal Company CDPS NO.: CO-0027146 OUTFACE: 001/002 <br />TYPE TEST: ROUTINE: XX ACCELERATED:- TEST SPECIES: P~romelas <br />TEST RESULTS: LCso: > 100% <br />STATISTICAL METHOD: Binomial <br />TEST TIME & DATE: BEGIN 1205 PM 01/30/01 END 12] 5 PM 02/03/01 <br />DILUTIONS (% EFFLUENT) <br />MEASUREMENTS 0% 0.2% 25% 50% 75% 100% <br /># START OF TEST: 40 40 40 40 40 40 <br /># ALIVE AFTER 24 HRS: 40 40 40 40 40 40 <br /># ALIVE AFTER 48 HRS: 40 40 40 40 40 40 <br /># ALIVE AFTER 72 HRS: 40 40 40 40 40 40 <br /># ALIVE AFTER 96 HRS: 40 40 40 40 40 40 <br />RECEIVING WATER USED FOR DII,UTION? NO TOTAL RESID. CI ~ (mg/I): <0.1 <br />HARDNESS (mg/l): RECEIVING WATER: EFFLUENT: 40 RECON WATER: 110 <br />ALKALINTfY (mg/l):RECEIVING WATER: EFFLUENT: 930 RECON WATER: 85 <br />pH: INITIAL: CONTROL 8.5 100% EFFLUENT 7.6 <br />FINAL: CONTROL 8.3 100% EFFLUENT 8.8 <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 />f1 <br />LABORATORY: COMMERCIAL TESTING & ENGINEERING ANALYST: ~ ~"~' <br />COMMENTS: <br />4/14/99 <br />COMMERCIAL TESTING & ENGINEERING CO. <br />F-/88 <br />Original Watermarketl For Your Protection <br />LTA <br /> <br />