CA Health & Safety Code Section 9006

(a)

Any action brought to determine the validity of the organization or of any action of a district shall be brought pursuant to Chapter 9 (commencing with Section 860) of Title 10 of Part 2 of the Code of Civil Procedure.

(b)

Any judicial review of an action taken pursuant to this part shall be conducted pursuant to Chapter 2 (commencing with Section 1084) of Title 1 of Part 3 of the Code of Civil Procedure.