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'i ' <br />i <br />.i <br />' COMMEgC1AL TESTING & ENGINEEfl ING CO. _ <br />SINCE X908+ <br />® COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />'j PERMITTEE: Oxbow Mining LLC CDPS NO.: CO-0000132 OUTFACE: 011 <br />TYPE TEST: <br />I ROUTINE: XX ACCELERATED:_ TEST SPECIES: P. promelas <br />~~ TEST RESULTS: LCso: >100% STATISTICAL METHOD: Binomial <br />TEST TIME & DATE: BEGIN 1140AM 03/04/03 END 1145 AM 03/08/03 <br />DILUTIONS (% EFFLUENT) <br /> <br />MEASUREMENTS 0% 1.0% 25% 50% 75% 100% <br /># START OF TEST: 40 40 40 40 40 40 <br /># ACNE 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 /># ACNE AFTER 96 HRS: 40 40 40 40 40 40 <br />i ~ RECENING WATER USED FOR DILUTION? NO TOTAL RESID. CI - (mg/I): X0.1 <br />HARDNESS (mg/I): RECENING WATER: EFFLUENT: 95 RECON WATER: 115 <br />ALKALINITY (mg/1): RECENING WATER: EFFLUENT: 2165 RECON WATER: 85 <br />pH: INITIAL: CONTROL 8.5 100% EFFLUENT 8.4 <br />FINAL: CONTROL 7.6 100%EFFLUENT 8.8 <br />TOTAL AMMONIA AS N (mg/I): INITIAL 100%: <1.0 FINAL 100%: <1.0 <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DNISION GUIDELINES? YES <br />IF NO, LIST DEVIATIONS.FROM TEST SPECIFICATIONS: <br />-~.`~_~ <br />LABORATORY: COMMERCIAL TESTING & ENGINEERING ANALYST: ~G.~.~ <br />COMMENTS: <br />4/14/99 <br /> <br />