Wash. Rev. Code § 11.107.040
(1) The trustee of the first trust may exercise the decanting power under RCW 11.107.020 and 11.107.030 if:
(3) The trustee of the first trust, a qualified beneficiary, a holder of a presently exercisable power of appointment over any part of the first trust, and a person that currently has the right to remove or replace the trustee may petition the court under chapter 11.96A RCW regarding exercise of the decanting power for the following relief, to:
(4) The trustee of the first trust may petition the court under chapter 11.96A RCW regarding exercise of the decanting power for the following relief:
(7) A notice under subsection (1) of this section or petition under subsection (3) or (4) of this section must:
[ 2017 c 29 s 4.]