On December 17, 2014, the Environmental Protection Agency (EPA) proposed tightening the National Ambient Air Quality Standard (NAAQS) for ozone from 75 parts per billion (ppb) to between 65–70 ppb. The EPA is expected to issue a final rule by October 2015.
NAM Study Confirms Rule Could Be Costliest in U.S. History
An August 2015 update to a study by NERA Economic Consulting, commissioned by the National Association of Manufacturers (NAM), finds that the EPA’s proposed ozone rule could reduce GDP by $140 billion annually and eliminate 1.4 million job equivalents per year. In total, the costs of complying with the rule from 2017 to 2040 could top $1 trillion, making it the most expensive regulation ever issued by the U.S. government.