| ISSUES |
REHABILITATION OBJECTIVES |
MEASURES |
| Physical Stability Issues: |
| Slope Failure |
Avoid deep seated failure, large surface slumps and sediment release |
- site selection to avoid low strength foundations
- construct in lifts to achieve flatter slopes
- internal drains to prevent water table rise
- covers and/or ditches to control water infiltration
- doze crest if required, or construct toe berm to flatten overall slope
- revegetate to establish riprap
|
| Chemical Stability Issues: |
| Acid Drainage and/or Leaching of Metals, Mill Reagents or Contaminants |
Meet water quality objectives by: controlling reactions and/or controlling migration; collect and treat |
- underwater disposal to control reactions
- pre-treatment-blending of alkali material to mitigate acid drainage
- cover to control reactions and/or migration
- segregation of deleterious materials for controlled disposal or cellular pile construction
- detoxify by flushing with water or other solutions
- regulate seepage quality to meet mine effluent objectives with covers and/or retention pond prior to release
- collect and treat
|
| Land Use Issues: |
| Productivity and Visual Impacts |
Return surface to original state or other approved use |
- contour-blend with natural topography
- revegetate where practical
|
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Environmental Technology for Mining
