Soil contamination of the landfill uncontrolled by heavy metals: Case of the landfill of Ahfir-Saidia (Eastern Morocco) [Contamination des sols d'une décharge non contrôlée par les métaux lourds: Cas de la décharge Ahfir-Saidia (Maroc oriental)]

Implementing landfill solid waste without any prior treatment and without any protection of the soil in landfill sites constitutes a risk factor of contamination of soil and groundwater. large quantities of heavy metals (in solid forms) were buried during storage of municipal or industrial waste. heavy metals are present in the most part of the constituents of waste (batteries,electrical wires...). the objective of this study is to establish a diagnosis of the state of pollution of the soil at the level of the uncontrolled discharge of ahfir-saidia by a discharge soil sampling and analysis of heavy metals by icp-aes. analysis of heavy metals in the soil at a depth ranging from 0 to 20 cm and then 20 to 40 cm showed that the presence of pb,zn,ni,cr,as and co are present in significant quantities. in contrary,cd concentrations are very low. in the end,this study aims to: protect men,animals,plants and their biota as well as water,soil and air against harmful or uncomfortable due to waste and preventively limit pollution of the environment by waste.