To see whether the surrounding real estate price after soil and groundwater pollution remediation will revert to the level before the risk of implicit pollution, this paper uses research methods, such as the hedonic price method and contingent valuation method for analysis. The results of empirical analysis reveal that the hedonic price method will be restricted by trade cases around pollution sites. In view of this, it proposes using the contingent valuation method and consumers' viewpoints for the analysis. Empirical results show that after pollution remediation the respondents are willing to pay an average of $1168 per square meter, which is slightly higher than the current price of $1059 per square meter with an increase of about 10%. Therefore, prices will recover after remediation at least to the level of the surrounding area.

Abstract:Under the circumstances of limited government funds, the future pollution remediation policies and practical implementation may need contemplation from the perspective of maximized efficacy, in order to pursue the most effective resource allocation. In fact, different pollution sources and types affect the value of surrounding properties differently in significance and scope. Therefore, benefits from the remediation may vary depending on the polluted locations. Currently, however, decision-making on the location-based priority of pollution remediation still seems to be in need of a clear index system to evaluate the post-remediation benefits. Therefore, this article discusses the use of the fuzzy Delphi method to determine factors of the location-based priority of soil and groundwater pollution remediation and an analytic network process to determine the weights of each factor. The empirical results show that the top 3 priority indicators are resident population, land value and natural resources. Hopefully, this finding can be used in future decision-making on the priority of pollution remediation to maximize the effect of limited funds.

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There is a sever draught happening in the Mead Lake that the observation of the lake elevation is decreasing dramatically. With increasing water demand in people’s life, people need to find more supply for them to meet their needs. There is a good way that recycling the wastewater from sinks, toilets and showers. For some people, they may think it impossible and even disgusting but this kind of technology exists and developing. Before conducting the wastewater recycling program, we need to investigate more about the impact of drought on reservoirs like the volume and elevation change of the Lake Mead and consider wastewater recycling as a solution to water shortages, Introduced by the environmental issue, the wastewater recycling program can be conducted. We consider some factors that may influence the plan like the changes in the water level of Lake Mead, demand of water and cost. We also prioritize the decisions that local leaders need to make and their impact. Finally we give our plan for this wastewater recycling program into three stages.