California Code, Streets and Highways Code - SHC § 8783

All money collected on the supplemental assessment shall be paid into the redemption fund and be applied to the payment of the costs of publishing and posting the notice of hearing and of making the supplemental assessment and then to the payment of the bonds and interest thereon. After satisfaction of the bonds, repayment, if possible, of all funds collected on the supplemental assessment shall be made to those persons paying the same out of recoveries had through the collection of the delinquent installments of the assessments upon which the bonds were originally issued and of the interest and penalties thereon, and then out of any surplus remaining in the redemption fund after repayment to the city of any special taxes levied by it for the purpose of advancing funds under Part 13 (commencing with Section 8800) less its recovery on the sale or redemption of the properties assessed and any costs incurred by it under this division.