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Reviewing National Ambient Air Quality Standards (NAAQS)

Sulfur Dioxide (SO2) Primary Air Quality Standards - Federal Register Notices from Current Review

Over the course of each NAAQS review, EPA publishes notices in the Federal Register for a variety of activities:  the kick-off workshop and call for information, CASAC meetings, availability of pre-rulemaking documents and opportunities for comment on these documents, as well as proposed and final rulemaking decisions and public hearings on a proposed rulemaking decision.

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Rulemaking Notices / Public Hearings

Pre-Rulemaking Documents / Availability and Opportunities for Public Comment

Public Meetings / Workshops

You may also be interested in other documents from the current sulfur dioxide primary NAAQS review.