Cal. Rev. & Tax. Code § 2923

Any county department, officer, or employee charged by law with the collection of any delinquent taxes on unsecured property may file a verified application with the board of supervisors for a discharge from accountability for the collection of the taxes, penalty, interest, or any other charge pertaining thereto, in accordance with Sections 25257, 25258, 25259, and 25259.5 of the Government Code.