Organizational Unit:
School of Public Policy

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Now showing 1 - 4 of 4
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The value of Fijian coral reefs by nonusers: a contingent valuation study to investigate willingness-to-pay for conservation, understand scale/magnitude of reef problems and provide tools for practitioners

2009-07-06 , Fonseca, Carolyn E.

A contingent valuation study was done to investigate the value of Fijian reefs by households in the Metro Atlanta area. Individuals were surveyed and asked questions about their Willingness-to-Pay for coral reef conservation, personal views on the scope/magnitude of coral reef problems, and experience around ocean related activities as well as knowledge. Results from this data, find individuals would donate on average $0.18 taking into account sample and response bias. Less conservative estimates calculated contributions per person to equal $13.9 for the conservation of Fijian reefs. These results imply Atlanta, which is very distant from Fiji, has the potential to contribute to Fijian coral reef conservation programs. Although little empirical work exists on valuation measure for reefs of non-users and groups distant to reefs, this study suggests nonprofits and developing countries could benefit from the inclusion or previously excluded (due to distance to reefs) participants. The study discusses donor characteristics as well as possible market strategies these organizations could utilize to maximize revenue. Findings from this work highlight two important issues rarely discussed in the policy literature: 1-the use of non-market valuation methods to identify stakeholders and 2-the effects of distance on use and non-use value ultimately impacting conservation.

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Spatial Resolution, Costs, and Equity in Air Toxics Regulation

2007-07-09 , Turaga, Rama Mohana Rao

Concern about environmental injustice has been driving the recent effort to characterize risks from exposures to air toxics at very fine spatial resolutions. However, few studies seek to understand the potential policy implications of regulating risks at increasingly finer spatial resolutions and the impact of resulting policies on distribution of risks. To address this gap, the broad question for this research is how could the choice of spatial resolution for regulation of risks from toxic air pollutants affect emission controls and the consequences thereof? This research develops a formal model of a hypothetical decision maker choosing emission controls within a risk-based regulatory framework. The model suggests that optimal controls on air toxics emissions vary depending on the spatial resolution chosen to regulate risks; net social costs are non-decreasing as one regulates at finer and finer spatial resolutions. An empirical application of the model using air toxic emission data for Escambia and Santa Rosa Counties in Florida demonstrates the sensitivity of optimal emissions to spatial resolution chosen for regulation. The research then investigates the equity implications of regulating at different spatial resolutions with regard to the spatial distribution of cancer risks. The empirical results indicate that regulation at finer spatial resolutions could involve a tradeoff between costs and equitable distribution of risks. For example, at a threshold cancer risk of 100 in a million, regulating at census block level resolution could be twice as costly as regulating at census tract resolution while reducing the maximum individual risk by almost half. Further, regulation at finer spatial resolutions might not address environmental injustice by itself unless such concerns are more explicitly incorporated into emission control decisions. Finally, this research shows that spatial resolution at which air toxics risks are regulated could matter in predictable ways even after taking into account the uncertainties that the decision maker faces.

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Three essays in program evaluation: the case of Atlanta inspection and maintenance program

2009-06-17 , Supnithadnaporn, Anupit

The Atlanta Inspection and Maintenance program ultimately aims to reduce on-road vehicular emission, a major source of air pollution. The program enforces eligible vehicles to be inspected and repaired, if necessary, before the annual registration renewal. However, various factors can influence the program implementation with respect to the motorists, inspectors, and testing technology. This research explores some of these factors by using empirical data from the Continuous Atlanta Fleet Evaluation project, the inspection transaction records, the Atlanta Household Travel Survey, and the U.S. Census Bureau. The study discusses policy implications of findings from the three essays and offers related recommendations. The first essay examines whether the higher income of a vehicle owner decreases the odds of the vehicle failing the first inspection. Findings show that vehicles owned by low-income households are more likely to fail the first inspection of the annual test cycle. However, after controlling for the vehicle characteristics, the odds of failing the first inspection are similar across households. This suggests that the maintenance behaviors are approximately the same for high- and low-income households. The second essay explains the motorists' decisions in selecting their inspection stations using a random utility model. The study finds that motorists are likely to choose the inspection stations that are located near their houses, charge lower fees, and can serve a large number of customers. Motorists are less likely to choose the stations with a relatively high failure ratio especially in an area of low station density. Moreover, motorists do not travel an extra mile to the stations with lower failure ratio. Understanding choices of vehicle owners can shed some light on the performance of inspection stations. The third essay investigates the validity and reliability of the on-board diagnostic generation II (OBD II) test, a new testing technology required for 1966 and newer model year vehicles. The study compares the inspection results with the observed on-road emission using the remote sensing device (RSD) of the same vehicles. This research finds that the agreement between the RSD measurement and the OBD II test is lower for the relatively older or higher use vehicle fleets

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The Net Fiscal Effects of Illegal Immigrants: Evidence from the Urban Counties of Georgia

2007-11-26 , Glover, Victoria Anne

This thesis engages in a review of the existing literature and empirical analysis, which addresses the impact of immigrants, specifically illegal, on urban counties in Georgia. It is increasingly accepted that immigration plays a significant role in many aspects of government services, and that immigrants in some form, do provide income, but the debate wages between how much transfers an immigrant takes and the taxes an immigrant pays. However, little attention has been focused on illegal immigrants and their local fiscal effects on government taxes and transfers. This area has not been the focus of systematic inquiry or substantive critical consideration because most studies center around legal immigrants and their federal impacts. The results from this thesis call for a mobilization of a heightened enthusiasm for addressing research challenges in this field and for current immigration policy to strive to maximize the well-being of the native population.