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Clean Air Interstate Rule 2009 Progress Reports

2009 Progress Reports

Announcements

February 2, 2011 - The Environmental and Health Results Report has now been published.

EPA has released a series of reports that evaluate progress under the Clean Air Interstate Rule (CAIR) in 2009 by examining emission reductions, reviewing compliance results and market activity, and comparing changes in emissions to changes in environmental indicators. The first report was released in September 2010, and will be followed by additional releases over the course of 2010.

Emission and Compliance Data Report

Emission and Compliance Data Report

Published September 2010

Emission, Compliance, and Market Analyses

Emission, Compliance, and Market Analyses

Published September 2010

Environmental and Health Results

Environmental and Health Results

Published January 2011

Additional Data

About the Clean Air Interstate Rule

The Clean Air Interstate Rule (CAIR) was designed to address interstate transport of ozone and fine particulate matter (PM2.5) pollution. To do so, CAIR required certain states to limit annual emissions of nitrogen oxides (NOX) and sulfur dioxide (SO2), which contribute to the formation of ozone and PM2.5. It also required certain states to limit ozone season NOX emissions which contribute to the formation of ozone during the summer ozone season. CAIR developed three separate cap and trade programs that could be used to achieve the required reductions — the CAIR NOX ozone season trading program, the CAIR annual NOX trading program, and the CAIR SO2 trading program. The CAIR NOX ozone season and annual programs began in 2009, while the CAIR SO2 annual program began in 2010. The reduction in ozone and PM2.5 formation resulting from implementation of the CAIR programs provides health benefits as well as improved visibility in national parks and improved stream quality in the eastern U.S.

Litigation and the CAIR Replacement Rule

On July 11, 2008, the U.S. Court of Appeals for the D.C. Circuit issued a ruling vacating CAIR in its entirety. EPA and other parties requested a rehearing, and on December 23, 2008, the Court revised its decision and remanded CAIR to EPA without vacatur. This ruling leaves CAIR and the CAIR Federal Implementation Plans (FIPs) — including the CAIR trading programs — in place until EPA issues new rules to replace CAIR.

EPA is committed to issuing rules to replace CAIR that will help states address the interstate air emissions transport problem in a timely way and that fully comply with the requirements of the Clean Air Act and the opinions of the D.C. Circuit. EPA has developed a proposed Transport Rule which, if finalized as proposed, would replace CAIR in 2012. The proposed rule was signed in July 2010.

 


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