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ABSTRACT At the request of Somerset Mining Company, Commercial <br />Testing and Engineering performed a Phase I Toxicity Identification <br />Evaluation (TIE) on the company's Somerset Mine effluent. The <br />following effluent characterization tests were performed: initial <br />and baseline effluent toxicity tests, pH adjustment tests, EDTA <br />chelation and oxidant reduction tests. In addition, the effluent <br />was scanned for metals using Inductively Coupled Plasma (ICP). <br />The above characterization tests were chosen based on past test <br />results from previous Whole Effluent Toxicity (WET) tests. <br />Although this Phase I TIE is not conclusive, results of the metals <br />scan, EDTA chelation test and the pH adjustment tests strongly <br />suggest toxicity due to high total dissolved solids (TDS) possibly <br />in solution with bicarbonates. Further testing will be required to <br />confirm TDS toxicity in Somerset Mine effluent. <br />COMMERCIAL TESTING & ENGIN EE RING CO. <br />~~n ai Vlaierm arked For Your ProieUion ~~` <br />