The employer must make sure each room with an exhaust hood has a source of outside air that:
(1) Enters the room in a way that will not interfere with the function of the hood;
(2) Replaces at least ninety percent of the air taken in through the hood.
[Statutory Authority: RCW
49.17.010,
49.17.040,
49.17.050, and
49.17.060. WSR 20-21-091, § 296-307-45020, filed 10/20/20, effective 11/20/20; WSR 03-10-068, § 296-307-45020, filed 5/6/03, effective 8/1/03.]