After any tax or penalty has been charged off as finally uncollectible under the provisions of this section, the department of revenue may destroy any or all files and records pertaining to the liability of any taxpayer for such tax or penalty.
The department of revenue, subject to the approval of the state records committee, may at the expiration of five years after the close of any taxable year, destroy any or all files and records pertaining to the tax liability of any taxpayer for such taxable year, who has fully paid all taxes, penalties and interest for such taxable year, or any preceding taxable year for which such taxes, penalties and interest have been fully paid. In the event that such files and records are reproduced on film pursuant to RCW 40.20.020 for use in accordance with RCW 40.20.030, the original files and records may be destroyed immediately after reproduction and such reproductions may be destroyed at the expiration of the above five-year period, subject to the approval of the state records committee.
RCW 82.32.340