Wash. Admin. Code § 296-800-31045
(3) You must not require employees to travel toward areas where high hazard materials are stored, unless the route is protected by partitions or physical barriers. High hazard materials are materials that:
[Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, and 49.17.060. WSR 18-22-116, § 296-800-31045, filed 11/6/18, effective 12/7/18. Statutory Authority: RCW 49.17.010, [49.17].040, and [49.17].050. WSR 01-11-038, § 296-800-31045, filed 5/9/01, effective 9/1/01.]