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Vernon Jr. D.K.,TerraGraphics Environmental Engineering Inc.
Tailings and Mine Waste'10 - Proceedings of the 14th International Conference on Tailings and Mine Waste | Year: 2011

The East Mission Flats Repository was designed to dispose of metals contaminated soils and debris wastes. Several of the engineering design challenges included repository configuration to reduce visual impacts; access analysis to reduce impacts to local roads; stormwater management integrated into the phased construction to retain sediment; slope stability for waste configuration and placement; evapotranspiration cover to reduce precipitation infiltration through the waste; and groundwater quality protection. © 2011 Taylor & Francis Group, London.


Woolston J.S.,TerraGraphics Environmental Engineering Inc.
Tailings and Mine Waste'10 - Proceedings of the 14th International Conference on Tailings and Mine Waste | Year: 2011

To support soil cleanup and site remediation activities at the Bunker Hill Superfund Site (BHSS) in northern Idaho, contaminated soils are removed from residential yards and stored in repositories. With a limited supply of suitable land available for site selection, former tailings ponds and tailings-covered ground are used as repositories. At the Big Creek Repository (BCR) in the BHSS, design methods developed from the results of in-situ and laboratory testing and analysis of the physical properties of mine and mill tailings have been used to design, construct, and expand this repository. In 2004 the engineering design properties were developed for the BCR as a result of extensive geotechnical testing of the foundation materials. These properties were retested to demonstrate how the strength properties change as the repository is loaded. The data collected at BCR are being successfully applied to the expansion of the BCR and the design of other repositories. © 2011 Taylor & Francis Group, London.

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