00000nam 2200000zi 4500 9.879461 CaOODSP 20241203113652 m o d f cr bn||||||||| 190919s1982 ykcab ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-yk x8x8 En40-240/82-18E-PDF Jack, Mary, author. Baseline study of the watershed in the Silver Tusk area, Yukon Territory / by M.E. Jack and T.R. Osler. [Whitehorse, Yukon Territory] : Environment Canada, Environmental Protection Service, Pacific Region, Yukon Branch, 1982. 1 online resource (vi, 58 pages) : illustrations, maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Regional program report ; 82-18 "October 1982." Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 23-27). "A predevelopment study was undertaken by the Environmental Protection Service of the watershed near Silver Tusk Mines Ltd. In June, 1981. Except for the mine adit water which had high concentrations of dissolved salts, water quality met drinking water criteria. The sediment metals concentrations were similar to other Yukon streams except at the mine adit where high concentrations of metals reflected those present in Silver Tusk ore. The bottom fauna results were representative of clear, unpolluted, Yukon streams. The presence of trace amounts of antimony, cadmium, copper, and mercury in the ore will have to be considered in planning minewater and mill effluent treatments when Silver Tusk Mine is developed, because concentrations of these metals will have to be kept low in effluents"--Abstract, page i. Issued also in print format. Includes abstracts in English and French. gccst Inland waters gccst Water quality gccst Sediments gccst Aquatic animals gccst Mining industry Osler, T. R., author. Canada. Environment Canada. Canada. Environmental Protection Service. Pacific Region. Yukon Branch. Regional program report (Canada. Environmental Protection Service. Pacific Region) 82-18. (CaOODSP)9.879151 PDF 1.74 MB https://publications.gc.ca/collections/collection_2019/eccc/en40-240/En40-240-82-18-eng.pdf