Tailoring Rule Finalized: EPA Issues Much Anticipated Fix for PSD and Title V Greenhouse Gas Permitting

The much-anticipated Tailoring Rule, a critical cog in United States Environmental Protection Agency’s efforts to use the regulatory process to regulate Greenhouse Gas (GHG) emissions1, was finalized on May 13, 2010. US EPA and most commentators believe that without the Tailoring Rule, regulation of GHG emissions from stationary sources under the Clean Air Act (CAA) is a practical impossibility. Promulgation of this rule marks an important milestone in what has proven to be a contentious process.

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