News

4th Maximum Ozone Values Table (ppb) through August 15, 2010

Click here to view the updated table. The ozone standard set by the U.S. Environmental Protection Agency (EPA) is calculated using a rolling three-year average of the fourth (4th) maximum 8-hour ozone concentrations.  An official violation occurs when the rolling...

EPA Fact Sheet on Proposal to Revise the NAAQS for Ozone

On January 6, 2010, the Environmental Protection Agency (EPA) proposed to strenthen the national ambient air quality standards (NAAQS) for ground-level ozone, the main component of smog.  The proposed revisions are based on scientific evidence about ozone and its...

Governor Ritter appoints 21 local leaders to serve on the the RAQC

Governor Ritter recently appointed 21 local leaders to serve on the the Regional Air Quality Council (click here to see a list of appointees). Appointees include appointed local government elected officials, business and citizen representatives, and experts in...