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Client: 11Unm1ain Corl Compnay CO - 003A766 SCG Prujret No.: 305302 <br />Site: R'rst F:Ik Mine 017 <br />KESUI,TS <br />The data sheets for the acute tests are located in Appendix 2. "!'able 1 summarizes the <br />results of Dnphnio mq~nta tests with the treated and untreated effluent. All treated efffucnts <br />reported LCSOs of>100% as did the untreated sample. <br />'T'able I. Dapbtrin mngrra sun•ival and L('S0 calculations fur treated/untreated effluent <br />100 20 20 20 20 <br />50 20 20 20 20 <br />25 20 20 20 20 <br />12.5 20 20 20 20 <br />19 <br />COfllfO: 20 <br />20 20 <br />20 20 <br />20 20 <br />20 <br />LC50 >100% >?Of)% >100°/a >100% <br />Survival in the Fathead minnow test was 100% in the 100% effluent concentration. <br />Survival r~utgcd from 98% - 100% in all the remaining effluent concentrations. Control survival <br />was I QO4~o. <br />I)Iti('l'StiIUV' <br />The sample collection showed no effects of toxicity to Duphniu nmgrui in both the treated <br />and untreated effluent samples. '1-he discharge passes WL-T (1Yholc Gfllucnt 'Coxicity) test <br />guidelines for this species for this sampling period. <br />No significant toxiciq- was measured in the Fathead minnow test. The sample passes <br />WET requirements for this species for this sampling period. <br />A series of tests were performed in conjunction with the original effluent cts part of the <br />pcrntit requirements to confirm the efTects of TDS against other possible contaminants. In this <br />case, the received sample did not show toxicity in the quarterly test. 711is result was consistent <br />with findings tom the alkalinity adjustment test series. <br />The ScaCrrst Group 7 <br />