Promulgation of Air Quality Implementation Plans; State of Texas; Regional Haze and Interstate Visibility Transport Federal Implementation Plan: Proposal of Best Available Retrofit Technology (BART) and Interstate Transport Provisions

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On October 17, 2017, the EPA published a final rule partially approving the 2009 Texas Regional Haze State Implementation Plan (SIP) submission and promulgated a Federal Implementation Plan (FIP) for Texas to address certain outstanding Clean Air Act (CAA) regional haze requirements. Because the EPA believes that certain aspects of the final rule could benefit from additional public input, we are proposing to affirm our October 2017 SIP approval and FIP promulgation and to provide the public with an opportunity to comment on relevant aspects, as well as other specified related issues.