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<br />COLORADO - CDPS WET TEST REPORT FORM -ACUTE <br />PIIiMITTEE: Powderhorn Coal Company CDPS NO.: COA027146 OUTFACE: 001 002 <br />TYPE TEST: ROUTINE: 7{X ACCELERATID:_ TEST SPECIES: .dubs <br />TEST RESULTS: LCw:.>100° STATISTICAL METHOD: Binomial <br />MSD: 0.00 95% CONFIDENCE LIMTfS: No limits given. <br />TEST TIME & DATE: BEGIN ]000 AM Ol/11/00 END 0920 AM 01/13/00 <br />D]LUTIONS (% EFFLUENT) <br /> <br /> <br /> <br /> <br />MEASUREMENTS 0% 0.2% 25% 50% 75% IOOY~ <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 USID FOR DII.UTION? NO TOTAL RESID. Cl ' (mg/1): <0.1 <br />HARDNESS (mg/l): RECEIVING WATER: EFFLUENT: 70 RECON WATER 115 <br />ALKALINITY (mg/1):RECEIVING WATER: EFFLUENT: 1120 RECON WATER: 85 <br />pH: <br />INITIAL: CONTROL 8.4 100% EFFLUENT 7.7 <br />FINAL: CONTROL 8.3 100% EFFLUENT 9.0 <br />1 TOTAL AMMONIA AS N (mgn): INITIAL 100%: =1.0 FINAL 100%: X1.0 <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: CGc..,... <br />COMMENTS: <br />4/14/99 <br />COMMERCIAL TESTING SENGINEERING CO. <br />L1E. <br />~nglnal Watermarke° For Vaur Protection <br />