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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...

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:...

RAQC Receives $2.7M from EPA for Diesel Project

Denver, Colo. – The Regional Air Quality Council (RAQC), the lead air quality planning agency for the Denver metropolitan area and a leader in advancing clean diesel technologies, received a $2.7 million Diesel Emissions Reduction Act (DERA) grant from the...

RAQC Partners with City of Littleton on Hybrid Project

Littleton, Colo., August10,2010 - Mayor Doug Clark will accept the keys and a $40,000 check from representatives of the Regional Air Quality Council (RAQC) at a celebration to put into service two hybrid electric senior transportation buses on Tuesday, August 10 at 11...

2008 Ozone SIP Approved by EPA

On July 21, 2010, the U.S. Environmental Protection Agency (EPA) published the Proposed Rule for approval the 2008 ozone state implementation plan (SIP) in the federal register (Vol. 75 , Number 139, July 21, 2010).  For the final SIP and supporting documents, please...

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...