Proposed ozone regulations may cost triple environmental agency projections

Environmental Protection Agency officials are moving forward with proposed emissions regulations despite critics' claims that the new rules could be the costliest in U.S. history.
The regulations would require ground-level ozone to decrease from present levels nationwide from 75 parts per billion to between 65 and 70 as early as 2020. The pollutant levels decreased by 23 percent from 1990 to 2013, according to the environmental agency.
The additional processes needed to reduce ground-level ozone are estimated to cost $1.7 trillion from 2017 to 2040 and could slash the nation's gross domestic product by $140 billion each year, according to a recent study conducted by National Economic Research Associates, an independent group that conducts economic analyses.

http://www.washingtonexaminer.com/proposed-ozone-regulations-may-cost-triple-environmental-agency-projections/article/2561335