Wash. Admin. Code § 480-30-321
(1) Within five days of making a filing requiring posting of a customer notice under WAC 480-30-316, but no sooner than the date the filing is submitted to the commission, a company must file a statement with the commission's records center that the required notice has been posted. The declaration must include:
[Statutory Authority: RCW 80.01.040, 81.04.160, 81.12.050, 81.68.030, and 81.70.270. WSR 06-13-006 (General Order No. R-533, Docket No. TC-020497), § 480-30-321, filed 6/8/06, effective 7/9/06.]