# Beryllium — OSHA medical surveillance trigger thresholds by substance

For Beryllium, cfr section is 1910.1024; action level is 0.1 micrograms per cubic meter of air (µg/m3) calculated as an 8-hour time-weighted average (TWA); pel is 0.2 µg/m3 calculated as an 8-hour TWA; 2.0 µg/m3 as determined over a sampling period of 15 minutes; surveillance trigger is Who is or is reasonably expected to be exposed at or above the action level for more than 30 days per year; who shows signs or symptoms of CBD or other beryllium-related health effects; who is exposed to beryllium during an emergency; or whose most recent written medical opinion recommends periodic medical surveillance; exam frequency is Initial examination; at least every two years thereafter for each employee who continues to meet the criteria; at termination of employment unless an examination has been provided in the six months prior to termination, recorded from its source on 2026-08-12.

- **Substance:** Beryllium _(verified: appears in the quote below)_
- **CFR section:** 1910.1024 _(verified: appears in the quote below)_
- **Action level:** 0.1 micrograms per cubic meter of air (µg/m3) calculated as an 8-hour time-weighted average (TWA)
- **PEL:** 0.2 µg/m3 calculated as an 8-hour TWA; 2.0 µg/m3 as determined over a sampling period of 15 minutes
- **Surveillance trigger:** Who is or is reasonably expected to be exposed at or above the action level for more than 30 days per year; who shows signs or symptoms of CBD or other beryllium-related health effects; who is exposed to beryllium during an emergency; or whose most recent written medical opinion recommends periodic medical surveillance
- **Exam frequency:** Initial examination; at least every two years thereafter for each employee who continues to meet the criteria; at termination of employment unless an examination has been provided in the six months prior to termination
- **Record retention:** maintained and made available in accordance with the Records Access standard (§ 1910.1020)

## What the source says

> 1910.1024 Beryllium." /> 29 CFR §

## Source

- https://www.law.cornell.edu/cfr/text/29/1910.1024

Last verified: 2026-08-12. Review by: 2027-02-08.
Part of [OSHA medical surveillance trigger thresholds by substance](https://referencesource.org/osha-medical-surveillance-triggers/).