An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Updating RMP if substance no longer held in excess of threshold quantity

If a facility had a covered process that was previously subject to the Program 2 or 3 requirements, but no longer holds the regulated substance in excess of the threshold quantity due to a decrease in production or storage, must the facility update its risk management plan (RMP)?

If a process no longer exceeds the threshold quantity of a regulated substance as a result of a decrease in production, it is not a covered process. Because a change occurred that altered the program level that applied to the process, the facility owner or operator must update and resubmit its RMP within six months of the change (40 CFR §68.190(b)(7)). If this was the facility's only covered process, the facility must deregister within six months (§68.190(c)).