Events and News

EPA Proposes New Ozone Standard

December 2, 2014

On Nov. 26, EPA proposed to lower air quality standards to within a range of 65 to 70 parts per billion (ppb). The Clean Air Act requires EPA to review the standards every five years; EPA last updated these standards in 2008, setting them at 75 ppb.

According to EPA’s analysis, strengthening the standard to a range of 65 to 70 ppb would prevent more than 710 to 4,300 premature deaths; 1,400 to 4,300 asthma-related emergency room visits; and 65,000 to 180,000 missed workdays. EPA estimates annual costs to meet the new standards will be $3.9 billion in 2025 for a standard of 70 ppb, and $15 billion for a standard at 65 ppb. 

EPA will seek public comment on the proposal for 90 days following publication in the Federal Register, and the agency plans to hold three public hearings. EPA will issue final ozone standards by October 1, 2015.

To view the proposal: