Environmental Assessment
Volume E-7
Tailings Facility
Environmental and Social
Management Plans
Ambatovy Project
232
January 2006
proponents will work with stakeholders and Malagasy fisheries experts on
developing fishery management techniques.
Selected monitoring of aquatic resources downstream of the tailings facility will
ensure appropriate protection is achieved.
7.1.4
Emergency Contingency Plan
An emergency response plan is being developed to limit impacts on both people
and the environment if an unexpected extreme event occurs. If an extreme high
rainfall event which has the potential to result in overtopping of the tailings dam
occurs, residents downstream will be informed and evacuated to safe areas. A
spill response plan will be designed to minimize effects on water quality, and any
spill event will be followed up with monitoring until the contaminants are
cleaned.
7.2
CLOSURE AND RECLAMATION ACTIVITIES
7.2.1
Water Management Plan
Natural runoff conditions will be re-established through grading and
revegetation. Water management ponds and downstream streams and water
bodies will be monitored until results indicate that seepage from the tailings
facility will have no significant effect downstream.
7.2.2
Flora and Fauna Management Plans
Tailings areas will be reclaimed progressively as each pond phase is completed.
To initiate revegetation, organic matter will be incorporated into the surface layer
of the reclaimed soil profile to enhance fertility of tropical soils for reclamation.
Deficient nutrients will be replaced as necessary with fertilizer amendments to
allow for successful reclamation. Liming agents such as calcium and magnesium
may be used to increase soil pH and reduce metal mobilities. A vegetation
monitoring plan will be implemented during the initial progressive reclamation
efforts during project operations, and continue until reclamation is completed to
ensure that reclamation efforts are meeting targets and erosion control measures
are working effectively.
