Review of the National Ambient Air Quality Standards for Ozone-Call for Scientific and Policy-Relevant Information

The U.S. Environmental Protection Agency (EPA) is announcing that the Office of Air Quality Planning and Standards (OAQPS) and the Office of Research and Development's National Center for Environmental Assessment (NCEA) are preparing an Integrated Review Plan (IRP) and an Integrated Science Assessment (ISA) as part of the review of the air quality criteria and the National Ambient Air Quality Standards (NAAQS) for ozone (O3) and related photochemical oxidants. The IRP will summarize the plan for the review, including the initial identification of policy-relevant issues and questions to frame the review. The ISA will build on the scientific assessment conducted for the last O3 review, focusing on assessing newly available information since the last assessment. Interested parties are invited to assist the EPA by submitting information regarding significant new O3 research and policy-relevant issues for consideration in this review of the primary (health-based) and secondary (welfare-based) O3 standards.