Wash. Admin. Code § 296-150I-0200
The department of labor and industries will ensure installers comply with the requirements of RCW 43.22A.130 which requires a certified manufactured home installer to be present for each phase of the installation being performed by all members of the installation crew by:
[Statutory Authority: Chapters 43.22 and 43.22A RCW. WSR 22-01-193, § 296-150I-0200, filed 12/21/21, effective 1/31/22. Statutory Authority: Chapter 43.22A RCW and 2009 c 464 [564]. WSR 10-06-043, § 296-150I-0200, filed 2/23/10, effective 4/1/10. Statutory Authority: Chapter 43.22A RCW and 2007 c 432. WSR 08-12-040, § 296-150I-0200, filed 5/30/08, effective 6/30/08.]