Cal. Sts. & High. Code § 8688

Any interested owner shall have the right to tender to the treasurer in payment or part payment of any installment of the assessment or interest or penalties thereon which may be due or payable, any bond secured thereby, the bond to be taken at par and credit to be given for the accrued interest shown thereby computed to the date of tender. The treasurer shall thereupon cancel the bond and shall cause proper credit therefor to be entered on the records of the assessment, in the office of the auditor and tax collector.