WAC 296-820-835. Exposure controls

(1) Where the current PM 2.5 is 20.5 µg/m 3 (AQI 72) or more, the employer is encouraged to implement exposure controls. (2) Where the current PM 2.5 is 35.5 µg/m 3 (AQI 101) or more, the employer must implement effective exposure controls whenever feasible. (3) Such controls include, but are not limited to: (a) Providing enclosed buildings, structures, or vehicles where the air is adequately filtered; (b) Providing portable HEPA filters in enclosed areas; (c) Relocating work to a location with a lower ambient air concentration of PM 2.5 ; (d) Changing work schedules to a time with a lower ambient air concentration of PM 2.5 ; (e) Avoiding or reducing work that creates additional exposures to dust, fumes, or smoke; (f) Reducing work intensity; and (g) Providing additional rest periods. (4) WAC 296-820-835 is not required during emergency response. Note: Exposure controls may be implemented to the extent that the work is no longer covered by the scope of this rule as listed in WAC 296-820-805 (1) or (2).