Cal. Pub. Util. Code § 101303

The board may, at any time prior to the issuance and sale of any bonds, provide for the call and redemption of any or all of the bonds on any interest payment date prior to their fixed maturity at not exceeding the par value and accrued interest plus a premium of not exceeding 5 percent upon the principal amount of the bonds, in which event the call price fixed by the board shall be set forth on the face of the bond. Notice of such redemption shall be published pursuant to Section 6066 of the Government Code. The first publication shall be not more than 60 and not less than 30 days prior to the date fixed for redemption. After the date fixed for such redemption, interest on the bonds thereafter shall cease.