(2) Co-Location with Desalination Plant
The National Environment Agency (NEA) - which oversees the waste management infrastructure - has expressed plans to co-locate incineration and desalination plants together to make use of the waste heat generated during incineration as energy inputs in the thermal desalination process [2]. We thus considered this factor and ensured that the siting of the 5th incineration plant is near the coast. To do this, we calculated the maximum distance between a current desalination plant and the coastline and made use of this distance to create a buffer where the new plant should be located in. The distance used is 250 metres.
(3) Height Restriction Zones
Singapore has five civilian and military airports, making it the country with the highest density of airports in the world. The Civil Aviation Authority of Singapore (CAAS) and URA thus have height restrictions imposed on buildings near these airports to prevent obstruction to flight paths. We estimated that the smokestack of the new incineration plant will be 150 metres, considering its planned daily capacity. Therefore, zones with height restrictions have been eliminated as possible sites for the plant. Using a height restriction zone layer, clipping was done such that only areas that met the previous two criteria, but are outside the restricted zones, were left for consideration.
(1) Land Use Plan
The Urban Redevelopment Authority (URA) of Singapore publishes 5-year Master Plans to govern Singapore’s land use and allocation in the short term [1]. The most recent Master Plan 2008 and the recently-released Land Use Plan by the Ministry of National Development (MND) were used to identify areas in Singapore that are earmarked for infrastructure development. We thus first ensured that only these areas classified under ‘Infrastructure’ were considered for the siting of the new incineration plant.
(4) Buffer Distance from Residences
The distances of current incineration plants away from residences were calculated to find out the minimum distance that an incineration plant should be sited away from populated areas. This was done so by using maps from Streetdirectory and iTouchMap. The buffer distance that we used is 750 metres. Using the buffer tool, we created a buffer polygon of distance 750 metres around areas marked as residence. This is used to remove sites that meet the previous three criteria, but fall in the buffer polygons.
[1] Urban Redevelopment Authority, Singapore (URA). (2013). Introduction to Master Plan. In Master Plan. Retrieved from http://www.ura.gov.sg/uol/master-plan.aspx?p1=View-Master-Plan.
[2] Cheong, H. L. (2012). Planning the 6th IP. Sharing at NTU R3C International Symposium 23 Oct 12. Retrieved from http://www3.ntu.edu.sg/r3c/PDF/News/PDF_Speaker%20Presentations/Cheong%20HL.pdf.
part 1: choosing potential sites
methods
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