Text For Citation: 01 Item/Group: 003 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 µg/m3, calculated as an 8-hour TWA: a) Abrasive blasting area, employee #1; On July 30, 2020 and at times prior to the employer exposed employees to an 8 hour calculated Time Weighted Average (TWA) of 957 micrograms per cubic meter of air which is 19.1 times the calculated 8 hour time weight average Permissible Exposure Level (PEL) of 50.0 micrograms per cubic meter of air while prepping steel pilings for paint. Results were calculated based on the 200 minute sampling period averaged with no exposure assumed for the 280 minute period not sampled. b) Abrasive blasting area, employee #2; On July 30, 2020 and at times prior to the employer exposed employees to an 8 hour calculated Time Weighted Average (TWA) of 437 micrograms per cubic meter of air which is 8.7 times the calculated 8 hour time weight average Permissible Exposure Level (PEL) of 50.0 micrograms per cubic meter of air while prepping steel pilings for paint. Results were calculated based on the 103 minute sampling period averaged with no exposure assumed for the 377 minute period not sampled.