Cal. Government Code § 37618.4

(a) A municipal hospital may, by resolution adopted by a majority of the board of trustees, issue negotiable promissory notes to acquire funds for any municipal hospital purposes subject to the restrictions and requirements imposed by this section. The maturity of the promissory notes shall not be later than 10 years from the date thereof. The total aggregate amount of the notes outstanding at any one time shall not exceed 85 percent of all estimated income and revenue for the current fiscal year, including, but not limited to, tax revenues, operating income, and any other miscellaneous income of the district. Indebtedness incurred pursuant to any other provision of law shall be disregarded in computing the aggregate amount of notes that may be issued pursuant to this section. (b) Negotiable promissory notes may be issued pursuant to this section for any capital outlay facility, equipment, or item which has a useful life equal to, or longer than, the term of the notes, as determined by the board of trustees. (c) The maximum annual interest rate which may be paid on negotiable promissory notes shall at no time exceed the amount authorized under Section 53531.