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Emissions During Periods of Startup, Shutdown, & Malfunction (SSM)

On May 22, 2015, EPA issued a final rule to ensure states have plans in place that require sources across the country to follow air pollution rules during times when the facility is starting up or shutting down, or when a malfunction occurs (or "SSM").

Air pollution emitted during these periods may adversely impact the health of people nearby and contribute to smog and other problems in communities that are further downwind.

Final Rule


Recent Regional Updates

North Carolina


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