The Environmental Protection Agency (EPA) is affirming and making permanent certain amendments previously made on an interim basis to the Code of Federal Regulations (CFR) provisions implementing the Cross-State Air Pollution Rule (CSAPR). The purpose of the interim amendments was to correctly reflect CSAPR's compliance deadlines as revised by the effect of the action of the United States Court of Appeals for the District of Columbia Circuit (D.C. Circuit or Court) granting the EPA's motion to lift the previous stay of CSAPR and delay (toll) its deadlines by three years. Consistent with the Court's order, the interim amendments corrected the CFR text to indicate that CSAPR's Phase 1 emissions budgets apply in 2015 and 2016 and that CSAPR's Phase 2 emissions budgets and assurance provisions apply in 2017 and beyond. The interim amendments similarly corrected dates in the CFR text related to specific activities required or permitted under CSAPR by regulated sources, the EPA, and states, as well as dates related to the sunsetting of obligations arising under the Clean Air Interstate Rule (CAIR) upon its replacement by CSAPR. In this action, following consideration of comments received on the interim amendments, the EPA is affirming the interim amendments and making them permanent without change. This action is independent of a separate currently pending EPA proposal to update CSAPR to address the 2008 National Ambient Air Quality Standards for ozone.