At its November 2024 meeting, WorkSafeBC’s Board of Directors (BOD) approved the adoption of the 2020 new and revised American Conference of Governmental Industrial Hygienists Threshold Limit Values (ACGIH TLVs) for styrene.

Effective January 8, 2025, styrene was removed from the Table of Exposure Limits for Excluded Substances in Policy R5.48-1 of the Prevention Manual and the ACGIH TLVs have been assigned as B.C. exposure limits.