Using GIS to Select Ideal Sites for Municipal Wastes Transfer Station: Case Study of Embu Municipality

Abstract

In Kenya, many local authorities face uphill challenges in dealing with wastes especially volume reduction and proper disposal. There is minimal solid waste segregation and recycling further compounding the problem of open dumping. The study’s objective was to identify suitable areas to consider for the construction of a multi-purpose waste transfer and recovery facility within Embu municipality. There was also a need to popularize waste bulking and improve on ways of compiling waste data which was lacking in their municipal waste management system. The study used a mixed approach design encompassing ground surveys, interviews, questionnaires, data modeling and Analysis. In this case study, Geographic Information System (GIS) was used to evaluate Population, land use and proximity to waste receptacles as impact factors influencing waste management in this town. GIS-based analysis identified Kangaru, Blue valley, Majengo and Itabua Wards as suitable areas for the construction of waste transfer station. The identified regions contained a total area of 0.15km2 of suitable sites from the initial 0.40km2 identified as Preliminary sites. These wards had motor able roads, with agricultural land use and were within the town suburbs. GIS provided appropriate tools for compilation, analysis and management of information related to generation, collection and disposal of Municipal Wastes. The study recommends the adoption of an integrated waste management approach where public views and the use of geospatial tools are incorporated in all aspects of municipal waste management.