12 February 2020
20137096-009 Rev A
Parameter
Design Input
Reference
Embankment control
Downstream toe to RL 260 m
Assumed top of pit
Natural ground elevation
RL 260 m
Survey by client
Starter embankment crest (Raise 1)
RL 290 m
Upstream embankment slope
1V:1.5H
Downstream embankment slope
1V:2.5H
Number of raises
6
APPENDIX A
Final Embankment crest - Raise 6
RL 335 m
Final Embankment length - Raise 6
850 m
Embankment crest control points
Control SP1 E N Control SP2 E N
231037.73 7383294.60 231633.16 7382647.41
Embankment crest width
16 m
Starter embankment construction material
Clay or geomembrane on soil zone upstream with Mine waste rock (NAF) Chimney filter and Gravel wrapped in geotextile
Soil/Clay Waste rock Filter and drainage
Stage 2 to 6 - Embankment construction material
Clay or geomembrane on soil zone upstream with Mine waste rock (NAF and/or PAF) with Chimney filter and Gravel wrapped in geotextile
Soil/Clay Waste rock Filter and drainage
TSF Hazard Category
Consequence Category
TBC
ANCOLD
Severity of damages and losses
TBC
Population at risk (PAR)
TBC
Potential loss of life (PLL)
TBC
Stability – Acceptable Factors of Safety (FoS)
7
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