Evaluation of the New Location of the Isfahan and Suburban Landfill with Oleckno Index Using Geographical Information Systems (GIS)

The municipal waste landfill sites have high a potential of contaminating the ‎environment and having effects of the human health due to waste degradation, production of leachate, carbon dioxide and ‎methane gases. The present study aims to evaluate the location of the solid waste landfill using GIS and based on the Oleckno index. Assessment parameters included average annual rainfall, soil type and ground water beneath and adjacent to the landfill site. This study was based on field- and library-based data collection, and surveys of relevant data. Then data were registered into the GIS environment and overlaying layers analysis method was used. In 2010 the total rainfall in the landfill region was less than 150 mm/year. ‎The soil material was clay loam, and the average distance ‎from the floor of the landfill to the groundwater level was 3-9 meters. As calculated results showed that, the Oleckno Index score in the study area was 40. This means that the conditions were good and there was low groundwater pollution potential. The new landfill site of the city and suburb of Isfahan had a good Oleckno index and the possibility of contamination of groundwater by leachate production based on this index was also low‎.