Text For Citation: 01 Item/Group: 003A Hazard:

29 CFR 1910.1053(c): The employer did not ensure that no employee was exposed to an airborne concentration of respirable crystalline silica in excess of 50 cmg/m3, calculated as an 8-hour TWA: a) Manual cutting and polishing area; On or about May 1, 2024, and at times prior thereto, the employer exposed employees to an airborne concentration of respirable crystalline silica in excess of 50 cmg/m3, calculated as an 8-hour time weight average (TWA). An employee wet and dry cutting and polishing, natural and manufactured stone countertops was exposed to respirable crystalline silica hazards at 193.18 micrograms per cubic meter which is approximately 3.86 times the permissible exposure level (PEL) of 50 micrograms per cubic meter. Results were based on a 346-minute sampling period with zero exposure used for the 134 minutes not sampled. b) Manual cutting and polishing area; On or about May 1, 2024, and at times prior thereto, the employer exposed employees to an airborne concentration of respirable crystalline silica in excess of 50 cmg/m3, calculated as an 8-hour time weight average (TWA). An employee wet and dry cutting and polishing, natural and manufactured stone countertops was exposed to respirable crystalline silica hazards at 111 micrograms per cubic meter which is approximately 2.22 times the permissible exposure level (PEL) of 50 micrograms per cubic meter. Results were based on a 486-minute sampling period. c) Manual cutting and polishing area; On or about May 1, 2024, and at times prior thereto, the employer exposed employees to an airborne concentration of respirable crystalline silica in excess of 50 cmg/m3, calculated as an 8-hour time weight average (TWA). An employee wet and dry cutting and polishing, natural and manufactured stone countertops was exposed to respirable crystalline silica hazards at 139.7 micrograms per cubic meter which is approximately 2.79 times the permissible exposure level (PEL) of 50 micrograms per cubic meter. Results were based on a 409-minute sampling period with zero exposure used for the 71 minutes not sampled.