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This action is the Risk and Technology Review (RTR) for Ferroalloys Production. It will address both the EPA's obligation under the Clean Air Act (CAA) to conduct a residual risk review and to conduct a technology review. Under the "technology review" provision of the CAA, the EPA is required to review maximum achievable control technology (MACT) standards and to revise them "as necessary (taking into account developments in practices, processes and control technologies)" no less frequently than every eight years. Under the "residual risk" provision of the CAA, the EPA must evaluate the MACT standards within eight  years after promulgation and promulgate standards if required to provide an ample margin of safety to protect public health or prevent an adverse environmental effect. The new deadline for this final rulemaking is May 28, 2015.