Text For Citation: 01 Item/Group: 007 Hazard:

29 CFR 1910.1053(j)(3)(i)(D): The employer did not ensure that each employee covered by this section could demonstrate knowledge and understanding of the contents of this section: a) On or about 2/15/2024, an employee conducting trimming operations on roofing slate, was exposed to a Time-Weighted Average level of 64.44 ug/m3;, which is approximately 1.29 times the Permissible Exposure Limit for crystalline silica of 50 ug/m3;. The exposure level is derived from two samples collected over a 333-minute period; the calculations include a zero value for the 147 minutes not sampled. The employer did not provide training on the silica standard to employees.