Cal. Sts. & Hy. Code § 8650.1
The legislative body, in its discretion, may determine, either (a) in the resolution of intention describing the improvement work, or (b) thereafter in any change proceedings taken under and in accordance with the provisions of the same act under which the resolution of intention was adopted, that the principal amount of the bonds maturing or becoming subject to mandatory prior redemption each year shall be other than an amount equal to an even annual proportion of the aggregate principal of the bonds, and it may determine that the amount of principal maturing or becoming subject to mandatory prior redemption in each year plus the amount of interest payable in that year will be an aggregate amount that is substantially equal each year, except for the moneys falling due on the first maturity or mandatory prior redemption date of the bonds which shall be adjusted to reflect the amount of interest earned from the date when the bonds bear interest to the date when the first interest is payable on the bonds. Notwithstanding Section 8651.5, to the extent that the determination to issue bonds pursuant to Section 8570 includes term bonds, the legislative body shall provide for mandatory prior redemption of those bonds, without premium, through annual sinking fund installments conforming to the requirements of this section.
Notwithstanding Section 8652, the legislative body may prescribe the form of the bonds and shall fix the date of the bonds. The legislative body may divide the principal amount of any issue into two or more divisions and fix different dates for the payment of bonds of each division. The bonds of one division may be made payable at different times than bonds of any other division.
The legislative body, in its discretion, may determine in like manner to classify assessments into different terms of maturity so that smaller assessments may be made to mature over a shorter period of time and, in that event, the bond declaration in the resolution of intention, or in the change proceedings taken under and in accordance with the provisions of the same act under which the resolution of intention was adopted, in the assessment, and in the notice of recording the assessment may recite that the last installment of bonds shall mature a maximum rather than an exact number of years from the second day of September next succeeding 12 months from their date.
Ca. Sts. and High. Code § 8650.1