Text For Citation: 01 Item/Group: 001A 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 �g/m3, calculated as an 8-hour TWA: a. An employee manual batching on the 3rd floor of the platform was exposed to Respirable Crystalline Silica at a Time Weighted Average (TWA) of 1298.6 micrograms per cubic meter (µg/m3), 26.0 times the permissible exposure limit of 50.0 µg/m3. The sampling was performed for 332 minutes on February 26, 2019. b. An employee working as a silo batcher was exposed to Respirable Crystalline Silica at a Time Weighted Average (TWA) of 617.1 micrograms per cubic meter (µg/m3), 12.3 times the permissible exposure limit of 50.0 µg/m3. The sampling was performed for 424 minutes on February 26, 2019. c. An employee working as a mixer/collector operator on the 2nd and 3rd floors of the platform was exposed to Respirable Crystalline Silica at a Time Weighted Average (TWA) of 450.0 micrograms per cubic meter (µg/m3), 9.0 times the permissible exposure limit of 50.0 µg/m3. The sampling was performed for 424 minutes on February 26, 2019. d. An employee working as a spreader operator on the 1st floor of the platform was exposed to Respirable Crystalline Silica at a Time Weighted Average (TWA) of 444.1 micrograms per cubic meter (µg/m3), 8.9 times the permissible exposure limit of 50.0 µg/m3. The sampling was performed for 424 minutes on February 26, 2019. e. An employee working as a resin/color mixer on the 4th floor of the platform was exposed to Respirable Crystalline Silica at a Time Weighted Average (TWA) of 382.6 micrograms per cubic meter (µg/m3), 7.7 times the permissible exposure limit of 50.0 µg/m3. The sampling was performed for 422 minutes on February 26, 2019.