Startup, Shutdown, & Malfunction (SSM) Emissions at Industrial Facilities
On May 22, 2015, EPA issued a final rule to ensure states have plans in place that require industrial facilities 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: State Implementation Plans: Response to Petition for Rulemaking; Restatement and Update of EPA’s SSM Policy Applicable to SIPs; Findings of Substantial Inadequacy; and SIP Calls to Amend Provisions Applying to Excess Emissions During Periods of Startup, Shutdown and Malfunction (PDF)(147 pp, 928 K, About PDF)
- Fact Sheet on the Final Rule
- List of Affected States (PDF)(147 pp, 928 K)