Wash. Admin. Code § 246-272B-07300
(1) The owner, management entity, or operator shall create and follow a routine schedule as required in WAC 246-272B-04200(5) for:
(2) When removing septage, grease, scum, or sewage from a LOSS, the owner shall: Employ only persons approved by the local health jurisdiction to pump and transport septage, grease, scum, or sewage and that:
[Statutory Authority: RCW 70.118B.020. WSR 11-12-035, § 246-272B-07300, filed 5/25/11, effective 7/1/11.]