Wash. Rev. Code § 63.30.710
(2) If a putative holder makes a timely request under subsection (1) of this section for an informal conference:
(4) At a conference under subsection (2) of this section, the putative holder must be given an opportunity to confer informally with the administrator and the person that examined the records of the putative holder to:
(5) If the administrator fails to act within the period prescribed in subsection (2)(a) or (g) of this section, the failure does not affect a right of the administrator, except that interest does not accrue on the amount for which the putative holder was determined to be liable under RCW 63.30.680 during the period in which the administrator failed to act until the earlier of:
[ 2022 c 225 s 1101.]