Mount Polley takes water quality very seriously as it is evidence of proper remediation.
So how is Polley Lake water quality monitored to ensure proper environmental monitoring is being carried out?
- Mount Polley follows the BC-ENV approved Comprehensive Environmental Monitoring Plan. The results for all our monitoring sites are published in the publicly available Annual Environmental and Reclamation Reports
- You can find a link to the most recent report here: 2018 Report
- As you can see, Polley Lake water met all BC Water Quality Guidelines for aquatic life parameters in 2018 with the exception of phosphorus, which was elevated even prior to mining.
We often get asked if we continue to discharge into Polley Lake? This simply isn’t the case. We take remediation and water quality very seriously.
- Mount Polley discharges only treated mine site water that meets strict Environmental Management Act (EMA) permit guidelines.
- In fact, all mine site water is collected and is treated by a water treatment plant before it is released into Quesnel Lake. The water going into the treatment plant (influent) is monitored on an ongoing basis and the treated water leaving the plant (effluent) is sampled regularly for analysis.
- The lake water quality is also routinely monitored and sampled regularly as part of the mine’s Comprehensive Environmental Monitoring Plan.
Remediation efforts are strengthened by continued monitoring data.
- Currently, there are no indications in the monitoring data that the Mount Polley discharge is having any negative effects on Quesnel Lake water quality.
- If you are interested in looking at some of the water quality data that has been collected on surface water in the area around the Mount Polley Mine, the results are available through the BC Government Surface Water Monitoring Sites Interactive Map.