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~~ GOM MEROIAL TE STING & ENGINEERING GO. <br />„~. ~ COLORADO -CDPS WET TEST REPORT FORM -ACUTE <br />~~ <br />PERI~IITTEE: Oxbow Mining LC.C _ CDPS NO.: CO-0000132 OUTFACE: 011 <br />TYPE TEST: ROUTINE: h'K ACCELERATED:- TEST SPECIES: P. prome7as <br /> <br />TEST RESULTS: LC;o: >100% STATISTICAL METHOD: Binomial <br />TEST TIl~~E & DATE: BEGIN 1055 AM 10/2>/02 END 1005 AM 10/29/02 <br />DILUTIONS (% EFFLUENT) <br />MEASUREMENTS 0% 1.0% 25% 50% 75% 100% <br /># TART OF TEST: 40 40 40 40 40 40 <br /># ALIVE AFTER 24 ILRS: 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 38 <br /># ALIVE AFTER 96 HRS: 40 40 40 40 40 36 <br />7 .RECEIVING WATER USED FOR DILUTION? NO TOTAL RESID. CI - (mg/1): X0.1 <br />J ® HARDNESS (mg/I): RECEIVING WATER: EFFLUENT: 90 RECON WATER: 110 <br />ALKAI.IlVITY (mg/1): RECEIVING WATER: EFFLiJEN"I': 2230 RECON WATER: 80 <br />pH: INITIAL: CONTROL 8.3 100% EFFLUENT 8.6 <br />FINAL: CONTROL 8.1 100% EFFLUENT 9.1 <br />~ TOTAL AMMONIA AS N (mg/1): INITIAL 100%: <1.0 FINAL 100%: <1.0 <br />WERE ALL TEST CONDITIONS IN CONFORMANCE WITH DIVISION GUIDELLNES? YES <br />IF NQ LIST DEVIATIONS FROM TEST SPECIFICATIONS: / <br />LABORATORY: CONIlYlERCIAL TESTING & ENGINEERING ANALYST: C.~.~.~.,` <br />COMMENTS: <br />4/14/99 <br /> <br />