ABSTRACT

The limited financial and technological resources available to clean polluted aquifers particularly in the developing countries such as in Sub-Saharan Africa where degradation of groundwater is recognized as one of the most serious water resources problem implies that contamination of groundwater resources remains a growing public health hazard (Xu and Usher, 2006). In this case, natural attenuation (or monitored natural attenuation-MNA) appears to be a possible contaminated land management option necessitating investigation. Attenuation is generally most effective in the unsaturated (vadose) zone.