News

U.S. regulators delay smog rule for fourth time

The Environmental Protection Agency is again delaying issuing a final limit on ozone (smog) pollution until the Obama administration has finished reviewing it.  The rule is going through interagency review at the White House Office of Management...

4th Maximum Ozone Values Table (ppb) through September 30, 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...

RAQC Board Approves Goals and Criteria

The RAQC Board approved the Goals and Criteria document as presented at its September 8, 2010 meeting.  The purpose of the Goals and Criteria document is recognition of an agreement upon explicit goals and evaluation/decision making criteria to assist the RAQC...

EPA delays the release of the final ozone NAAQS

EPA announced it is delaying the release of the final ozone NAAQS until approximately October 31, 2010.  A status report filed by EPA with the court announcing this new date is available here:...