What is the OSHA hexavalent chromium PEL?

The OSHA hexavalent chromium PEL (Permissible Exposure Limit) for general industry is:

• 5 µg/m³ over an 8-hour time-weighted average (TWA)

OSHA also establishes an Action Level of 2.5 µg/m³, which may trigger additional monitoring and protective measures. Employers are responsible for ensuring worker exposure remains below these limits through engineering controls, air monitoring and protective measures.