Environmental Assessment
Volume E-3.9
Tailings Facility
Oceanography
Ambatovy Project
92
January 2006
Figure 3.9-1 A diagrammatic description of a pollutant source and its fate within
the aquatic environment and the consequent bio-accumulation
process.
3.9.3.2 Outfall Character and the Marine Environment
The proposed outfall effluent consists of numerous elements, naturally occurring
in seawater (Table 3.9-1). The PRDW dilution and settling modelling
(see Volume J, Appendix 10.1, Attachment 2) of the effluent, indicated that total
suspended solids (TSS), manganese and sulphate (S(SO
4
)) were the only
constituents which would be well above natural levels or the Malagasy water
quality standards (Table 3.9-1). These in particular would require further
dilution on disposal into the marine environment in order to reduce the possible
negative impacts of these constituents. In addition, the effluent is buoyant and
