Environmental risk assessment of urban development projects Tehran 19th District using spatial EFMEA(Case study: the operation of provincial parks)

Risk assessment approach is a key element in the establishment and development of management systems. The components of the management systems more and more closely at the results more credible, respectively. One component that is particularly involved in issues of the environment component is location. The system is designed to produce, analyze, store and display spatial data is geographic information system. The aim of this study was identification and assessment of environmental risk factors with using non-spatial and spatial components including their location and extent of risks affect risk using spatial analysis of failure modes and effects on the environment (Spatial-EFMEA). At first checklist was prepared and preliminary assessment. Then complete Spatial-EFMEA worksheet and then according to the table, analyzed the likelihood and extent of risks and compute risk priority numbers respectively. Finally, using the frequency distribution method, results of the risk levels from low frequency, very low, low, medium, high, very high and critical level were classified for above-average levels of risk control measures and evaluate the proposed secondary. The results showed that 9% of risk associated with the buildings, 25 percent of risk associated with the green space, 16% of risk associated with the Green Ring and band Hulk, 16 percent of risk associated with the women area, 11% of risk associated with the sport area, 6% of risk associated with the parking and 17% of risk associated with the public area.