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Integrated Science Assessments (ISAs)

[NOTICE] EPA is announcing the availability of the external review draft of the Integrated Science Assessment for Ozone and Related Photochemical Oxidants for public review and comment as announced in a September 26, 2019 Federal Register Notice (FRN). The deadline for comments is December 2, 2019.  The Scientific Advisory Board (SAB) meeting, scheduled in December 2019, will be announced in a separate FRN notice.

EPA has set National Ambient Air Quality Standards (NAAQS) for six principal criteria air pollutants, which include nitrogen oxides, sulfur oxides, particulate matter, carbon monoxide, ozone and lead. Numerous sources emit these "criteria pollutants", which are considered harmful to public health and the environment.

Since 2008, EPA’s Integrated Science Assessments (ISAs) have formed the scientific foundation for the review of the NAAQS standards by providing the primary (human health-based) and secondary (welfare-based, e.g. ecology, visibility, materials) science assessments:

Calendar of Workshops and Meetings

OTHER EVENTS:

Clean Air Scientific Advisory Committee (CASAC), which provides independent advice to EPA on the technical basis for the NAAQS, is the primarily reviewing authority for the ISAs.

The CASAC Calendar includes a complete list of past and future meeting details.
Calendar