Analysis of landfill siting with Analytic Hierarchy Process and Geospatial Technologies

Authors: Yunwoo Nam*, University Of Nebraska - Lincoln
Topics: Urban and Regional Planning, Geography and Urban Health, Geographic Information Science and Systems
Keywords: Landfill siting, Location suitability, GIS, Analytic Hierarchy Process, Multi-criteria decision
Session Type: Virtual Paper
Day: 4/7/2021
Start / End Time: 3:05 PM / 4:20 PM
Room: Virtual 12
Presentation File: No File Uploaded

As population grew, waste increased. Solid waste management has gained growing attention and became one of pressing issues local governments are facing. The way we design and handle waste management system has positive and adverse effects on communities. Solid waste can cause environmental and health concerns such as greenhouse gas, ordor, noise, dust and contamination among others, if not properly treated. Siting landfills and waste managing facilities has become even more challenging due to NIMBY (Not In My Back Yard) and LULU (Locally Unwanted Land Use) phenomena.
This research diagnoses Nebraska’s landfills by evaluating site suitability with Analytic Hierarchy Process (AHP) and geospatial technologies. Site suitability analysis includes spatial multi-criteria decision process in which Geographic Information System (GIS) plays an essential role. To accommodate a wide range of various features that matter with the location of landfills, influencing factors are grouped into three main categories – community, environmental and infrastructure. To conduct opinion survey of AHP, 32 experts who are familiar with local situations were selected based on their location and expertise (with diverse backgrounds such as planners, environmental engineers, landfill operating staffs, environmental quality inspectors). To deal with conflicting weights among expertise and location, this paper compares and cross-tests scenarios to identify most suitable sites of landfills. The methodology developed in this research is an effective way to be utilized to create landfill site location plan that will reduce negative impacts on surrounding communities.

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