The Obama Administration has pushed back the tightening of the federal ozone standard which lobbyists say could cost billions of dollars and hundreds of thousands of jobs. The current standard of 75 parts per billion set in 2008 by the Bush administration...
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EPA Published Final Rule on Denver’s Attainment Demonstration for the 1997 8-Hour Ozone Standard
EPA published the Final Rule for Approval and Promulgation of State Implementation Plans; State of Colorado; Attainment Demonstration for the 1997 8-Hour Ozone Standard, and Approval of Related Revisions in the Federal Register, Vol. 76, No....
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...
Sustainable Land Use Measures & Air Quality Planning Process Workshop Summary
Now Available: Sustainable Land Use Measures & Air Quality Planning Process Workshop Summary (8.14 MB) Prepared by: Office of Policy, U.S. Environmental Protection Agency - May 5, 2011 A Workshop was held with the Regional Air Quality...
Mow Down Pollution 2011
YOUR OLD MOWER'S DAYS ARE NUMBERED. The Regional Air Quality Council is planning our annual Mow Down Pollution even for May 7th at locations around the Denver metro area. This year, we invited you to pre-register for your new Neuton mower after April 18 at...
Ozone State Implementation Planning 2010 Progress Report to the Governor Now Available
The Ozone State Implementation Planning 2010 Progress Report to the Governor is complete and now available here.
RAQC Chooses ENVIRON/Alpine for SIP Modeling
After a thorough competitive RFP process, the RAQC has chosen to move forward on a contract with ENVIRON/Alpine. The contract will include modeling to support the development of the upcoming Ozone State Implementation Plan, as well as other tasks that may arise as the...
EPA delays the final issuance of the 8-hour ozone standard until no later than July 31, 2011
EPA Administrator Lisa Jackson has announced a delay in the final issuance of the 8-hour ozone standard until no later than July 31, 2011. According to the EPA statement below, she will “ask CASAC for further interpretation of the epidemiological and...
EPA delays the release of the final ozone NAAQS until December 31, 2010
EPA announced it is delaying the release of the final ozone NAAQS until approximately December 31, 2010. In the motion filed with the court, EPA requests the court to continue to hold in abeyance the pending litigation on the 2008 ozone NAAQS while EPA...
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...