Cal. Health & Safety Code § 32316

By resolution of the board of directors adopted by a vote of four-fifths of the membership of the board, the district may issue bonds of not more than a maximum of 50 percent of the average of the district’s gross revenues for the preceding three years, pursuant to Chapter 6 (commencing with Section 54300) of Part 1 of Division 2 of Title 5 of the Government Code, to provide funds for the acquisition, construction, improvement, financing or refinancing of an enterprise, or the refunding of any bonds, notes, loans, or other indebtedness of the district, including, but not limited to, any or all expenses incidental thereto, or connected therewith, or any combination of two or more of those purposes.