The objective of this work is to generate a long term action plan for green and sustainable remediation of the contaminated land in the Dapingding specific urban planning area, Kaohsiung City. The results would be used to plan economic development, remediated technologies utilization, risk control alternatives, and regulative requirements for the follow-up policy making in this area. In this work, we have investigated the status of the land use, background of environment, sites of probable concern for illegal dumping, community status and urban plan in this area. Within the Dapingding specific urban planning area, 3,281 hectares of the area were investigated for contamination potentials. After topological comparisons, 270 sites, approximately 422 hectares, of the area were marked as sites of probable concern for illegal dumping. Unfortunately, most lands on those sites have been designated to be residential areas. Since it is not possible to simply clean-up all of those solid wastes, brownfield redevelopment will be the only way to solve the problem of contaminated lands in this area. Some examples of successful brownfield redevelopment will be useful for evaluating the relationship between risk and financial returns, sustainable development and re-use decision of large contaminated lands.
In order to maximize the profit of re-using contaminated lands, to minimize the cost of the risk and development and to achieve the goals required by green and sustainable remediation, all of those 270 sites need to be taken into account in planning the Dapingding specific urban planning area. For remediation alternatives, they need to be planned based on the decision generated under health risk evaluation. Sites with higher risk potential or lands for residential use, all of hazard industrial solid wastes needed to be clean-up to minimize the risk of human health. On the contrary, sites with lower risk potential or lands not for residential or crop-growing use, solid wastes at surface layer needed to be clean-up and deeper layer will be confined with barriers.
In this work, a preliminary action plan and a framework of integrated elemental projects had been proposed. The key elemental project is regarding to the comprehensive land use strategy for entire Dapingding specific urban planning area that links relations of economic realities, policy making and different stakeholder perspectives. The components delivered by that elemental project will be a model of overall development and land use, a preliminary design of public constructions and evaluation of regulation requirements and financial plan. To support technological requirement, another elemental project in building a green remediation demonstration site will also need to start as soon as possible. The components will be delivered by this elemental project were also proposed in this work.