Cal. Public Utilities Code § 103504

The bonds shall bear interest at a rate or rates not exceeding 7 percent per annum, payable semiannually, except that the first interest payable on the bonds, or any series thereof, may be for any period not exceeding one year as determined by the board. In the resolution or resolutions providing for the issuance of such bonds, the board may also provide for call and redemption of such bonds prior to maturity at such times and prices and upon such other terms as it may specify, provided that no bond shall be subject to call or redemption prior to maturity unless it contains a recital to that effect or unless a statement to that effect is printed thereon. The denomination or denominations of the bonds shall be stated in the resolution providing for their issuance, but shall not be less than five thousand dollars ($5,000). The principal of, and interest on, such bonds shall be payable in lawful money of the United States at the office of the treasurer of the district. The bonds, or such series thereof, shall be dated and numbered consecutively and shall be signed by the chairman of the board and the treasurer. All such signatures, countersignatures, and seal may be printed, lithographed, or mechanically reproduced, except that one of such signatures or countersignatures on the bonds shall be manually affixed. If any officer whose signature or countersignature appears on bonds or coupons ceases to be such officer before the delivery of the bonds, his signature is as effective as if he had remained in office.