Wash. Rev. Code § 63.30.280
(1) Subject to subsection (2) of this section, the holder of property presumed abandoned shall send to the apparent owner notice by first-class United States mail that complies with RCW 63.30.290 in a format acceptable to the administrator not more than 180 days nor less than 60 days before filing the report under RCW 63.30.220 if:
[ 2022 c 225 s 501.]