Wash. Admin. Code § 284-24-011
Effective February 1, 2009, filers must submit complete rate filings that comply with the SERFF Industry Manual posted on the SERFF website (www.serff.com) and the Washington State SERFF Property and Casualty Rate Filing General Instructions posted on the commissioner's website (www.insurance.wa.gov). All rate filings must comply with these rules:
(3) Each rate filing must be:
[Statutory Authority: RCW 48.02.060, 48.110.150. WSR 08-21-091 (Matter No. 2007-11), § 284-24-011, filed 10/15/08, effective 2/1/09.]