Dear Administrator Wheeler and Principal Deputy Assistant Administrator Idsal, ConservAmerica, a non-profit organization dedicated to environmental protection and conservation through thoughtful rules and market-based policies, appreciates this opportunity to write in support of the U.S. Environmental Protection Agency’s (EPA) proposed rulemaking to increase the consistency and transparency in considering the costs and benefits for future Clean Air Act (CAA) rules. Moreover, given the importance of cost-benefit analysis (CBA) to producing cost-effective and sustainable rules, we urge the Agency to apply such considerations across all of EPA’s programmatic programs.