Laserfiche WebLink
ABSTRACT At the request of Somerset Mining Company, Commercial <br />Testing and Engineering performed effluent and spring water <br />characterization tests on samples take from Somerset Mine. The <br />following characterization tests were performed: C. dubia acute <br />toxicity tests on mine effluent and B-seam spring water, C. dubia <br />acute toxicity tests on mock effluent and mock B-seam spring water, <br />EDTA chelation tests on effluent, spring water and a mock effluent <br />sample. In addition, the effluent was scanned for metals using <br />Inductively Coupled Plasma (ICP) and atomic absorption. <br />The above characterization tests were chosen based on past test <br />results from Phase I Toxicity Identification Evaluations (TIE's) <br />that strongly suggested toxicity due to high total dissolved solids <br />(TDS), possibly in solution with bicarbonates. Therefore, Sodium, <br />in the form of NaCI and NaHCOj, was added to individual aliquots of <br />reconstituted lab water to mimic TDS of the effluent and the B-seam <br />spring water. LCSp's for the mock effluent and mock spring water <br />prepared with NaHCOj were higher than those determined for mock NaCl <br />and unmanipulated effluent and spring water samples. However, <br />effluent and spring water mortalities were greater than the <br />mortalities of mock samples prepared with sodium chloride. This <br />suggests that the toxicant currently present in Somerset Mine <br />effluent and spring water is more likely to be TDS in the form of <br />bicarbonates. <br />COM MER CIAL TESTING & ENGINEE RING CO. <br />=66 ~~G <br />ip final Walerm arketl For Vour Proiecuon <br />