California Code, Government Code - GOV § 25210.6

(c)(1) Any action or proceeding to validate, attack, review, set aside, void, or annul an ordinance or resolution adopted pursuant to this chapter and levying, fixing, or extending an assessment, charge, or fee or modifying or amending any existing ordinance or resolution shall be brought pursuant to Chapter 9 (commencing with Section 860) of Title 10 of Part 2 of the Code of Civil Procedure.

(2) If an ordinance or resolution provides for an automatic adjustment in an assessment, charge, or fee, and the automatic adjustment results in an increase in the amount of an assessment, charge, or fee, any action or proceeding to attack, review, set aside, void, or annul the increase shall be commenced within 60 days of the effective date of the increase.

(3) Any appeal from a final judgment in the action or proceeding brought pursuant to this subdivision shall be filed within 30 days after entry of the judgment.