The Impact of Old Demolition Landfills on Water Resources Pollution, A Case Study: Mashhad City

Excessive growth followed by a flourishing civil engineering projects in recent decades, causing large amounts of construction wastes in Mashhad Metropolis. For evaluation of demolition landfills in the pollution of water resources, firstly the position of the old landfill and current land use of them are investigated. Then the impacts of old landfill such as land subsidence and pollution of water resources are evaluated. Furthermore, the factors affecting the quality and safety of water resources and their trends with distance from the landfill has been studied. The results shows that Environmental impacts due to construction on the old landfill embrace increase of carbonates and bicarbonates, augments of soluble solid and EC, amplifies of total hardness, SO42- and Cl-. On the other hand, the results demonstrate the factors affecting the quality and safety of water resources were declined as distance from the landfill increases. The Latter consider the direct impact of landfill location on water resources.