Disposal of large amount of hazardous wastes, which is produced in power plants, has received considerable attention. This paper explains an efficient approach to determine how to locate suitable sites for hazardous waste land filling area by using the site screening study, priority processing and analytical hierarchy process. This approach demonstrates how the criteria such as geology, topography, land use, climate, surface and ground water characters, accessibility, applicability and other related factors can be introduced into the over layer technique to determine the primary appropriate sites in a region. Also, a new approach based on DRASTIC and MPCA methods is used for priority processing between primary selected areas. Finally on the basis ofselected criteria' s analytical hierarchy process is used for determination of best site among thigh scored site in the last stage. The introduced method may enable more accurate design procedure for planning in environmental management in the future. This approach is used for disposal of hazardous waste in Shahid Rajaee power plant located in central part of Iran. Result show site 1 in Abyeck area next to Shahid Rajaee power plant is most convenient site for land filling of hazardous wastes generated in Shahid Rajaee power plant.