Cal. PUC § 30950

Prior to the time moneys authorized by special taxes under Part 16 (commencing with Section 36000) of Division 2 of the Revenue and Taxation Code and already levied by the county are available or funds are allocated to the district under said part or other state or federal laws, the district may borrow money to provide funds for the purposes provided in Section 30636 of this code, and for the expenses of the calling, giving notice of, holding and conducting of any bond election under this part.

The amount to be borrowed pursuant to this section shall be evidenced by notes bearing interest at a rate of not to exceed 6 percent per annum, payable annually or semiannually, maturing not more than two years from their date and subject to call and redemption at the option of the district at any time prior to their stated maturity dates on the terms and conditions specified by the board and stated in the notes. The amount to be borrowed pursuant to this section (including both the principal of and interest to maturity on the notes evidencing such borrowing) shall not exceed eighty-five percent (85%) of the special tax or said other moneys to be used to repay said notes and interest thereon and to be received by the district between the date of borrowing and the final maturity date of the notes, as estimated by the auditor at the time of the borrowing. The notes shall be payable only from special taxes authorized under Part 16 (commencing with Section 36000) of Division 2 of the Revenue and Taxation Code and already levied by the county, or from other moneys allocated under state laws other than this part, or federal laws. The form of the notes and the provisions of the resolution or resolutions of the board providing for their issuance and sale shall be governed by the applicable provisions of this article.