California Code, Public Resources Code - PRC § 5788.21

(a) A district may acquire any necessary real property by borrowing money or purchasing on contract pursuant to this section. That indebtedness shall be in addition to any bonded indebtedness authorized by the voters.

(b) The amount of indebtedness shall not exceed an amount equal to two times the actual income from property tax revenues received pursuant to Section 5788.13 for the fiscal year preceding the year in which the indebtedness is incurred. Any indebtedness shall be repaid within 10 years from the date on which it is incurred. An indebtedness shall bear interest at a rate which shall not exceed the rate permitted under Article 7 (commencing with Section 53530) of Chapter 3 of Part 1 of Division 2 of Title 5 of the Government Code.

(c) Each indebtedness shall be authorized by a resolution adopted by a four-fifths vote of the total membership of the board of directors and shall be evidenced by a promissory note or contract signed by the chair and the secretary or the clerk of the board of directors.