Embankment Slope (ES)
Each embankment has its own Static Factor of Safety (FoS) – the ratio of the forces of resistance to the shear forces acting on the dam. See the Health, Safety and Reclamation Code “Guidance Document”.
FoS is related to the slope of the embankment (H: horizontal – to V: vertical) and should be easy to obtain from publicly available mine data. If your mine uses a Dry-Stack you may SKIP THIS SECTION. Otherwise, ENTER “1” for Factors of Safety GREATER THAN 1.5. ENTER ”2” if the FoS is 1.5. ENTER “3” if the FoS is between 1.3 – <1.5. ENTER “4” if the FoS is less than 1.3.