In this final action, EPA is issuing a stay for 18 months of the inclusion of fugitive emissions requirements in the federal Prevention of Significant Deterioration (PSD) program published in the Federal Register on December 19, 2008, in the final rule entitled, "Prevention of Significant Deterioration (PSD) and Nonattainment New Source Review (NSR): Reconsideration of Fugitive Emissions" ("Fugitive Emissions Rule"). The Fugitive Emissions Rule under the federal PSD program requires that fugitive emissions be included in determining whether a physical or operational change results in a major modification only for sources in industries that have been designated through rulemaking under section 302(j) of the Clean Air Act (Act or CAA). The existing stay is in effect for 3 months; that is, from December 31, 2009 until March 31, 2010. This action puts in place an additional stay for 18 months, which we believe will allow for sufficient time for EPA to propose, take public comment on, and issue a final action concerning the inclusion of fugitive emissions in the federal PSD program.