00000nam 2200000zi 4500 9.880897 CaOODSP 20241203113652 m o d f cr ||||||||||| 191021e198308##bccb ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-bc En40-240/84-01E-PDF Ross, M., author. Progress report no. 2 - May 1983 water quality sampling in Myra Creek at Westmin Resources Ltd. mine on Vancouver Island / by M. Ross, M. Jones. Water quality sampling in Myra Creek at Westmin Resources Ltd. mine on Vancouver Island [Vancouver] : Department of Environment, Environmental Protection Service, Pacific Region, August 1983. 1 online resource (vii, 66 pages) : maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Regional program report ; 84-01 Title from cover. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (pages 49-50). "The Environmental Protection Service conducted a monitoring program in May 1983 to determine whether continued modifications to the collection and treatment works at Westmin Resources had resulted in improvements in Myra Creek water quality. Conductivity, residues, turbidity, sulphates, pH and total and dissolved metals were recorded. Mean copper, zinc and sulphate loadings were calculated. The Lynx pond discharge and any acid mine drainage that escaped collection and treatment appeared to be primarily responsible for the elevated copper and zinc levels in Myra Creek. The Myra ponds discharge mainly contributed to increased residue, sulphate and hardness concentrations. Metal and sulphate levels in Myra Creek were less in May 1983 than in December 1982"--Abstract, page i. gccst Water quality gccst Mining industry gccst Samples Jones, M., author. Canada. Environment Canada. Canada. Environmental Protection Service. Pacific Region. Regional program report (Canada. Environmental Protection Service. Pacific Region) no. 84-01. (CaOODSP)9.879151 PDF 2.36 MB https://publications.gc.ca/collections/collection_2019/eccc/en40-240/En40-240-84-01-eng.pdf