NAMAGROEN EMPR Amendment.pdf - DLIST Benguela

Addendum to EMPR for Concessions 8(a), 9(a) and 8(b) 41Stockpiling of marine gravels Status NegativeStockpiling of large volumes of Probabilitymarine sediments on land may :- disturb or smother terrestrialplants and animals and damage /destroy coastal habitats,- change the sediment compositionand soil chemistry, thereby Confidenceaffecting the rehabilitation Extentpotential.DurationIntensitySignificanceHighly probable; although mined sedimentswill be stockpiled in areas which arealready severely disturbed, sedimentcomposition and soil chemistry is likely tobe altered sufficiently to compromise therehabilitation potential of the area.HighSite-specific.Long-term; for the duration of the projectand thereafter.Severe; the biota in the area of thereclamation dam will be eliminated.MediumDisposal of recovery tailings Status PositiveTreatment of the marine sediments Probability Definite; recovery tailings are anproduces recovery tailings, whichwill be used to back-fill mined-outunavoidable product of land-based graveltreatment.areas.Confidence HighExtent Site-specific.Duration Long-term; back-fill areas will re-vegetatenaturally over a period of decades.Intensity NegligibleSignificance MediumDisposal of fine tailings Status NegativeScreening of marine gravels Probabilityproduces small quantities of finetailings, which will be discardedinto a settling pond with the Confidence Mediumprocess water, thereby potentially- contaminating groundwater,- changing the sedimentExtentcomposition, soil chemistry andwater retention properties, therebyDurationaffecting the rehabilitationpotential of settling pond areas,- posing a risk to animals andIntensityhumans if they fall intounconsolidated tailings ponds,- fine dust associated with dry Significance Lowtailings.Improbable; as the quantities discardedare relatively small and they constituteprimarily sands.Site-specific.Long-term; for the duration of the projectand until settling pond areas have beenrehabilitated.Negligible; fine tailings volumes will beinsignificant.Namagroen Prospecting & Investments October 2008