On June 13, 2018 the EPA published an Advance Notice of Proposed Rulemaking in the Federal Register (83 FR 27524), which solicited comments on whether and how the EPA should promulgate a transparency and consistent regulation affecting all future EPA regulations. As a part of developing a consistent and transparent regulation Agency-wide, the EPA has decided to first develop proposed changes to the regulatory development process to improve consistency, reliability, and transparency of its treatment of Clean Air Act provisions related to benefits and costs. This action will provide the public with a better understanding on how EPA is evaluating benefits and costs when developing Clean Air Act regulatory actions and allow the public to provide better feedback to EPA on potential future proposed rules.