Rules On 2008 Ozone National Ambient Air Quality Standards

US EPA has released a pre-proposal notice for several elements of implementation of the 2008 NAAQS for ozone. This NPRM will propose rules for implementing the 2008 8-hour Ozone National Ambient Air Quality Standards (NAAQS). The proposed rules will address the classification system, the attainment deadlines for areas designated nonattainment, the methodology to address areas receiving voluntary reclassifications for the 1997 ozone NAAQS, and revocation of the 1997 ozone NAAQS for transportation conformity purposes.

The proposed rules were submitted to the Office of Management & Budget (OMB) in December 2011, and were received back in January 2012. EPA anticipates publishing the Notice of Propose Rule Making (NPRM) in the Federal Register in February 2012.

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