Text For Citation: 01 Item/Group: 004C 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. a) Delaware River Basin Stone LLC, 1823 Airport Road, Deposit, New York, 13754. On or about 3/26/2024, employees in the general blue stone cutting area, Area A, were exposed to 72.3 micrograms per cubic meter (mcg/m3) of silica, eight hour time weighted average (TWA), approximately 1.45 times the OSHA permissible exposure limit of 50 mcg/m3. The sampling period was for 469 minutes. A zero increment is included for the 11 minutes not sampled. 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 in the general blue stone cutting area, Area A. b) Delaware River Basin Stone LLC, 1823 Airport Road, Deposit, New York, 13754. On or about 3/26/2024, employees in the special blue stone cutting area, Area C, were exposed to 109.3 micrograms per cubic meter (mcg/m3) of silica, eight hour time weighted average (TWA), approximately 2.19 times the OSHA permissible exposure limit of 50 mcg/m3. The sampling period was for 477 minutes. A zero increment is included for the 3 minutes not sampled. 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 in the special blue stone cutting area, Area C. EFFECTIVE MEANS OF ABATEMENT INCLUDE BUT ARE NOT LIMITED TO: 1. Local Exhaust Ventilation (LEV) 2. Filtration (general and source-capture) 3. Barriers 4. Continue to conduct air monitoring until results are below the Silica PEL