Ensure that no employee is exposed to an airborne concentration of respirable crystalline silica in excess of 50 μg/m3, calculated as an 8-hour time-weighted average (TWA).

Statutory/Other Authority

ORS 654.025(2) & 656.726(4).

Statutes/Other Implemented

ORS 654.001- 654.295

History

OSHA 5-2016, f. 9-23-16, cert. ef. 7-1-18