Mount Polley Mine August 2014 tailings dam embankment breach response and approach to remediation
On August 4, 2014, a foundation failure occurred at the Mount Polley Mine Tailings Storage Facility (TSF), releasing tailings, supernatant, and construction materials into the adjacent Polley Lake and down the Hazeltine Creek corridor into Quesnel Lake, causing erosion and deposition in the creek va...
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ftdatacite:10.14288/1.0354683 2023-05-15T16:16:52+02:00 Mount Polley Mine August 2014 tailings dam embankment breach response and approach to remediation McMahen, Katie Hughes, Colleen 2017 https://dx.doi.org/10.14288/1.0354683 https://doi.library.ubc.ca/10.14288/1.0354683 en eng The University of British Columbia article-journal Text ScholarlyArticle 2017 ftdatacite https://doi.org/10.14288/1.0354683 2021-11-05T12:55:41Z On August 4, 2014, a foundation failure occurred at the Mount Polley Mine Tailings Storage Facility (TSF), releasing tailings, supernatant, and construction materials into the adjacent Polley Lake and down the Hazeltine Creek corridor into Quesnel Lake, causing erosion and deposition in the creek valley and deposition in Polley and Quesnel Lakes. Mount Polley Mining Corporation’s immediate response to the TSF embankment breach included: assessing and managing human health and safety risks; initiating a large-scale environmental monitoring program; and implementing interim sediment and erosion control measures in the Hazeltine Creek corridor. Subsequently, a control-oriented rehabilitation plan was initiated, which included reconstruction of the Hazeltine Creek channel. The next remediation phase, which is currently underway, involves installation of fish habitat features in Hazeltine and Edney Creeks, as well as rehabilitation of riparian and forest ecosystems in the floodplain and upland areas. This reclamation program is guided by results of the Human Health and Ecological Risk Assessment being conducted. A number of challenges were (and continue to be) met in the TSF embankment breach response process, primarily associated with: external communications; expedient implementation of environment monitoring, construction and rehabilitation programs; and challenging environmental conditions. It is anticipated that long-term monitoring of the receiving environment and rehabilitation works will be required, with continuous improvements being achieved through the adaptive management process that has been necessary to respond to challenges encountered thus far. Strong relationships among Mine representatives, regulators, First Nations and consultants continue to be a key component to moving forward with clarity, and are a precondition of long-term trust. Text First Nations DataCite Metadata Store (German National Library of Science and Technology) |
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On August 4, 2014, a foundation failure occurred at the Mount Polley Mine Tailings Storage Facility (TSF), releasing tailings, supernatant, and construction materials into the adjacent Polley Lake and down the Hazeltine Creek corridor into Quesnel Lake, causing erosion and deposition in the creek valley and deposition in Polley and Quesnel Lakes. Mount Polley Mining Corporation’s immediate response to the TSF embankment breach included: assessing and managing human health and safety risks; initiating a large-scale environmental monitoring program; and implementing interim sediment and erosion control measures in the Hazeltine Creek corridor. Subsequently, a control-oriented rehabilitation plan was initiated, which included reconstruction of the Hazeltine Creek channel. The next remediation phase, which is currently underway, involves installation of fish habitat features in Hazeltine and Edney Creeks, as well as rehabilitation of riparian and forest ecosystems in the floodplain and upland areas. This reclamation program is guided by results of the Human Health and Ecological Risk Assessment being conducted. A number of challenges were (and continue to be) met in the TSF embankment breach response process, primarily associated with: external communications; expedient implementation of environment monitoring, construction and rehabilitation programs; and challenging environmental conditions. It is anticipated that long-term monitoring of the receiving environment and rehabilitation works will be required, with continuous improvements being achieved through the adaptive management process that has been necessary to respond to challenges encountered thus far. Strong relationships among Mine representatives, regulators, First Nations and consultants continue to be a key component to moving forward with clarity, and are a precondition of long-term trust. |
format |
Text |
author |
McMahen, Katie Hughes, Colleen |
spellingShingle |
McMahen, Katie Hughes, Colleen Mount Polley Mine August 2014 tailings dam embankment breach response and approach to remediation |
author_facet |
McMahen, Katie Hughes, Colleen |
author_sort |
McMahen, Katie |
title |
Mount Polley Mine August 2014 tailings dam embankment breach response and approach to remediation |
title_short |
Mount Polley Mine August 2014 tailings dam embankment breach response and approach to remediation |
title_full |
Mount Polley Mine August 2014 tailings dam embankment breach response and approach to remediation |
title_fullStr |
Mount Polley Mine August 2014 tailings dam embankment breach response and approach to remediation |
title_full_unstemmed |
Mount Polley Mine August 2014 tailings dam embankment breach response and approach to remediation |
title_sort |
mount polley mine august 2014 tailings dam embankment breach response and approach to remediation |
publisher |
The University of British Columbia |
publishDate |
2017 |
url |
https://dx.doi.org/10.14288/1.0354683 https://doi.library.ubc.ca/10.14288/1.0354683 |
genre |
First Nations |
genre_facet |
First Nations |
op_doi |
https://doi.org/10.14288/1.0354683 |
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1766002712815599616 |