Text For Citation: 01 Item/Group: 002B Hazard:

29 CFR 1910.1053(f)(1): The employer did not use engineering and work practice controls to reduce and maintain employee exposure to respirable crystalline silica to or below the PEL, unless the employer can demonstrate that such controls are not feasible: On or about August 20, 2024, an employee performing maintenance on Dust Collector A039971 was exposed to an 8-hour time weighed average (TWA) of 220 micrograms/cubic meter (ug/m3) of respirable crystalline silica (RCS), approximately 4.5 times the Permissible Exposure Level (PEL) of 50 ug/m3. The exposure level was derived from samples collected over a 470-minute sampling period, with zero exposure assume for the period of 10 minutes. Engineering and work practice controls were not sufficient to reduce the employee's exposure to, or below the PEL.