In 1984, BC Environment became aware of water quality problems created by acid drainage from an abandoned mine on Mount Washington. Several studies were done to assess the impact of the mine on water quality during 1984-89, and the Ministry of Energy, Mines and Petroleum Resources began reclamation of the mine in 1988. This overview summarizes the results of the water quality assessment of the Tsolum River and its tributaries. Objectives for copper in the Tsolum River basin are proposed to protect water quality and to guide the reclamation work at the Mt. Washington mine. All available data and current water quality criteria were used to derive the water quality objectives.
Deniseger, John H. 1995. Water Quality Assessment and Objectives for Tsolum River Basin Vancouver Island: Overview and Technical Appendix. BC Ministry of Environment Lands and Parks
Keywords: abandoned mine, Mount Washington
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