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Air polluters more likely to locate near downwind state borders

January 17, 2017

BLOOMINGTON, Ind. -- Indiana University research reveals a pattern of companies strategically locating facilities where wind will carry pollution across state lines.

Locating factories and power plants near downwind borders can allow states to reap the benefits of jobs and tax revenue but share the negative effects -- air pollution -- with neighbors.

"When you look at the location of major sources of air pollution, they are more likely to be nearer to downwind state borders, when compared to similar industrial facilities," said David Konisky, associate professor in the School of Public and Environmental Affairs at IU Bloomington.

The study compares 16,211 facilities in the United States that produce air pollution with 20,536 sites that produce hazardous waste but not air pollution. Using a technique called point pattern analysis, they show that facilities that produce air pollution are more likely to be near downwind state borders than those that produce other types of waste. A polluter is 22 percent less likely to be near an upwind state border than near a downwind state border, after adjusting for other variables.

The trend is especially pronounced for large facilities that emit toxic air emissions, those that are included in the Environmental Protection Agency's Toxics Release Inventory program.

States have long complained about air pollution from their neighbors. The Clean Air Act was designed to address the problem by setting uniform pollution standards. But under the U.S. system of federalism, enforcement of the regulations falls largely to the states, which may have less interest in regulating facilities that produce air pollution that crosses state boundaries. The system lends itself to "free riding," meaning those who benefit from goods or services don't pay the full cost.

Previous research has found that states are not less strict in their enforcement for facilities near downwind borders than for facilities elsewhere. The IU study suggests the discrepancy may come earlier in the process: in the decisions about where the facilities are sited.

The lingering question is whether facility location decisions result from state or local government action or from businesses or institutions that build and operate the facilities. Both have incentives, Konisky said. Governments may want to recruit jobs or protect their constituents from air pollution. Facility operators may wish to avoid "not-in-my-backyard" opposition.

Analysis by the researchers suggests both influences may be at work. Findings show the tendency toward free riding is more pronounced in states with less stringent environmental policy and those with aggressive economic development programs that pursue "smokestack" industries, suggesting state decisions are a factor. But it's also stronger in states with a high density of environmental organizations, suggesting businesses may make location decisions to avoid local opposition.
The study, "Gone With the Wind: Federalism and the Strategic Location of Air Polluters," was published in the American Journal of Political Science. Other authors are James Monogan, assistant professor of political science at the University of Georgia, and Neal Woods, associate professor of political science at the University of South Carolina.

Indiana University

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