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 This website is no longer updated and links to external websites and some internal pages may not work.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 »

Stationary source subject to OSHA PSM but below EPA threshold

A stationary source is subject to the OSHA process safety management standard (PSM) because it exceeds the OSHA PSM threshold for chlorine. The stationary source does not, however, exceed the threshold for chlorine (or any other regulated substances) in a process under the Risk Management Program regulations (40 CFR §68.130). Is the stationary source subject to the Risk Management Program, requirements?

No. A stationary source is subject to the Risk Management Program requirements only if it has more than a threshold quantity of a regulated substance in a process.