Text For Citation: 01 Item/Group: 004A 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 micrograms per cubic meter (ug/m�) calculated as an 8-hour TWA: a) Oldcastle APG Northeast - On or about July 7, 2023, a Bagger working on line 5, was exposed to an 8 hour time weighted average of 65 ug of crystalline silica per cubic meter of air (ug/m�). This exposure is 1.3 times the permissible exposure limit (PEL) of 50 micrograms per cubic meter (ug/m�) of air. This exposure occurred over a 460 minute sampling period. A zero exposure was assumed for the 25 minutes not sampled. Abatement certification and documentation required within 10 days after abatement date. The certification shall include a statement that abatement is complete, the date and method of abatement, and state that employees and their representatives were informed of this abatement. Abatement documentation shall include documents demonstrating that abatement is complete, such as evidence of the purchase or repair of equipment, photograph or video evidence of abatement or other written records.