Text For Citation: 01 Item/Group: 023A Hazard:

29 CFR 1910.1018(f)(1): Regulated areas were not established where workers exposure to inorganic arsenic, without regard to the use of respirators, were in excess of the permissible limit: a) On February 28, 2024, in the inside blasting building where a regulated area was not established for abrasive blasting operations, an employee performing abrasive blasting activities was exposed to inorganic arsenic at an 8-hour time weighted average (TWA) of 66 micrograms per cubic meter, 6.6 times the permissible exposure limit (PEL) for inorganic arsenic of 10 micrograms per cubic meter. Sampling was conducted for 445 minutes. Zero exposure was assumed for the remaining 35 minutes.