This subdivision applies to all occupational exposures to respirable crystalline silica in general industry and construction activities, except for the following:
- (1) Exposures that result from the processing of sorptive clays.
- (2) Operations where objective data demonstrates that employee exposures to respirable crystalline silica will remain below 25 micrograms per cubic meter of air (25 µg/m3) as an 8-hour time-weighted average (TWA) under any foreseeable conditions.
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