Determinations Concerning Need for Error Correction, Partial Approval and Partial Disapproval, and Federal Implementation Plan Regarding Texas Prevention of Significant Deterioration Program; Proposed Rule

EPA is proposing to correct its previous full approval of Texas's Clean Air Act (CAA) Prevention of Significant Deterioration (PSD) program to be a partial approval and partial disapproval and is proposing a Federal Implementation Plan (FIP) for Texas. This action is based on EPA's determination that Texas's PSD program is flawed because the state did not address how the program would apply to all pollutants that would become newly subject to regulation in the future, including non-National Ambient Air Quality Standard (NAAQS) pollutants, among them greenhouse gases (GHGs). The partial disapproval requires EPA to promulgate a FIP and so EPA is also proposing a FIP in order to assure that GHG-emitting sources in Texas are able to proceed with plans to construct or expand. In the "Rules" section of this Federal Register, we are taking this action including the FIP through an interim final rule that is effective immediately.