Did state regulation of power plants cause an increase in pollution exportation?

Citation

Bellas AS & Lange I (2008) Did state regulation of power plants cause an increase in pollution exportation?. Economics Letters, 98 (2), pp. 213-219. https://doi.org/10.1016/j.econlet.2007.04.032

Abstract
The 1970 Clean Air Act divided responsibility for achievement of air quality standards between the EPA and states. It is widely believed that, as a result, state-regulated sources received taller stacks, but analysis suggests that this is not true.

Keywords
Pollution; Clean Air Act; Stack heights; Coal

Journal
Economics Letters: Volume 98, Issue 2