Today the EPA released its proposed update to the air quality standards for ground-level ozone.  The proposal lowers the ground-level ozone standard from 75 parts per billion, where it’s been since 2008, to a range of 65 to 70 parts per billion.   EPA estimates most areas will be in compliance with the standard by 2025. 

A revised ozone standard of 70 to 60 parts per billion was recommended by the Clean Air Science Advisory Committee, a scientific panel that advises EPA in setting the national ambient air quality standards...

The U.S. Environmental Protection Agency is preparing to release a new National Ambient Air Quality Standard (NAAQS) for ground-level ozone. Based on recommendations from EPA’s science advisers and staff, the EPA is expected to announce a more stringent standard, likely in the range of 70 to 60 parts per billion, down from the 2008 standard of 75 parts per billion. A more strict ozone requirement could be a challenge for some states and counties to attain, generating areas of noncompliance around the U.S. accompanied by a hefty...

Please join us on September 25 at 2 PM/Eastern for CSG's webinar entitled "Understanding How EPA Clean Air Rules are Derived." To register for the event, please click here.