You must make sure the voice communication system between the equipment operators and persons stationed within the building is operable and manned whenever the platform is being used.
Wash. Admin. Code § 296-870-20045
Statutory Authority: RCW 49.17.010, 49.17.040, 49.17.050, 47.17.060. 06-19-075, § 296-870-20045, filed 9/19/06, effective 1/1/07.