Text For Citation: 01 Item/Group: 001B Hazard:

29 CFR 1910.1000(a)(2): Employee(s) were exposed to an airborne concentration of respirable dust listed in Table Z-1 in excess of the 8 hour Time Weighted Average concentration of 5 mg/m3: Employee exposures to particulates not otherwise regulated (PNOR) respirable fraction exceeded the Permissible Exposure Limit (PEL) of 5.00 mg/m3 listed in Table Z-1 for instances such as, but not limited to: a) On or about March 5, 2025, the operator performing abrasive blasting in the Upsetter Building was exposed to respirable dust at an 8-hour time-weighted average (TWA) of 30.40 mg/m3 during the 402 minute sampling period. This is approximately 6.08 times the permissible exposure limit (PEL) of 5.0 mg/m3. Exposure calculations include a zero exposure increment for the 78 minutes not sampled.