No Initial monitoring = Objective or Historic Data < 0.5 µg/ m3

No follow-up monitoring = < Action Limit

Monitor every 6 months = > Action Limit < permissible exposure limit

Monitor every 3 months = > Permissible Exposure Limit

Regulated Area = > Permissible Exposure Limit

Exposure Controls = > Permissible Exposure Limit for > 30 days/year

Respirator = > Permissible Exposure Limit and engineering controls not available or adequate

Medical Surveillance = > Action Limit for > 30 days/ year

Housekeeping, Hygiene and Other PPE = Qualitative Assessment

permissible exposure limit = 5 µg/m3 Action Limit = 2.5 µg/m3