This regulatory impact assessment (RIA) presents the health and welfare benefits of the ozone NAAQS, and compares the benefits to the estimated costs of implementing the NAAQS.

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• Regulatory Impact Analysis of the Final Revisions to the National Ambient Air Quality Standards for Ground-Level Ozone, September 2015
• Regulatory Impact Analysis of the Proposed Revisions to the National Ambient Air Quality Standards for Ground-Level Ozone, November 2014 (PDF)(575 pp, 11.5 M)

You may also be interested in other documents from the current ozone NAAQS review.