EPA initially issued its advance notice to solicit comment on whether to promulgate regulations on how it determines the costs and benefits of regulatory action. Such cost-benefit analyses are required by various environmental statutes, including the Clean Air Act and Clean Water Act, and are allowed by many others. Additionally, the Trump Administration policy has been to avoid regulations that pose significant burdens on regulated entities. The proposal seeks input on how EPA should consider co-benefits—i.e., benefits that accrue indirectly from a rule — and cumulative regulatory costs and benefits. The comment period has been extended to August 13, 2018.