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British Columbia Mine Reclamation Symposium
Capillary break cover design at Lorado mill tailings site Tong, Alvin; Miskolczi, Iozsef; Allen, Dianne; Wilson, Ian; Rykaart, Maritz
Abstract
The historical Lorado mill tailings site deposited uranium tailings within and adjacent to nearby Nero Lake. The remediation plans called for a capillary break tailings cover with in-lake water treatment to reduce radiation exposure from the tailings, limit tailings dust inhalation and acid generation, prevent efflorescent salts formation, and block tailings pore fluid uptake from vegetation. Detailed designs, including water and load balances were developed to establish appropriate in-lake water treatment design criteria and to set measurable load reduction targets for the cover efficiency. A borrow source investigation was carried out to confirm whether appropriate volumes of suitable cover materials were available for the proposed design. These studies showed original remediation plan assumptions were no longer valid. This paper will describe the engineering process that was followed to evaluate and ultimately adopt appropriate design criteria to ensure that realistic, site-wide closure objectives could be met. The authors will emphasize the importance of linking design criteria to measurable and achievable performance criteria that can be properly evaluated over the intended life of the design.
Item Metadata
Title |
Capillary break cover design at Lorado mill tailings site
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Creator | |
Contributor | |
Date Issued |
2014
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Description |
The historical Lorado mill tailings site deposited uranium tailings within and adjacent to nearby Nero
Lake. The remediation plans called for a capillary break tailings cover with in-lake water treatment to
reduce radiation exposure from the tailings, limit tailings dust inhalation and acid generation, prevent
efflorescent salts formation, and block tailings pore fluid uptake from vegetation. Detailed designs,
including water and load balances were developed to establish appropriate in-lake water treatment design
criteria and to set measurable load reduction targets for the cover efficiency. A borrow source
investigation was carried out to confirm whether appropriate volumes of suitable cover materials were
available for the proposed design. These studies showed original remediation plan assumptions were no
longer valid. This paper will describe the engineering process that was followed to evaluate and
ultimately adopt appropriate design criteria to ensure that realistic, site-wide closure objectives could be
met. The authors will emphasize the importance of linking design criteria to measurable and achievable
performance criteria that can be properly evaluated over the intended life of the design.
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Genre | |
Type | |
Language |
eng
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Date Available |
2014-11-18
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivs 2.5 Canada
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DOI |
10.14288/1.0042666
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URI | |
Affiliation | |
Peer Review Status |
Unreviewed
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Scholarly Level |
Other
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Rights URI | |
Aggregated Source Repository |
DSpace
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Item Citations and Data
Rights
Attribution-NonCommercial-NoDerivs 2.5 Canada