The current disposal management practices for MSWI residues are rarely based on sustainability criteria and long-term strategies; instead, traditional sanitary landfilling techniques have generally been applied to the MSWI residues without any significant adjustments. The properties of MSWI residues are very different from those of uncombusted MSW, and although sanitary landfilling may be entirely appropriate for MSW, its application to MSWI residues may lead to disposal solutions which are less than optimal in terms of resource conservation and environmental safety, particularly in the long term. The purpose of this paper is to examine alternative methods for disposal of MSWI residues considering the specific properties of these residues and based primarily on environmental/technical considerations.