Cal. Gov. Code § 5604
A governing body, in its ordinance, resolution or order providing for the issuance of any bonds, may provide a method whereby, at any time after the original issuance of the bonds, two or more bonds of the same issue or series and which are of like tenor may be exchanged for a single bond of like tenor and in a principal amount equal to the total of principal amounts of the bonds so exchanged, and may also provide a method whereby, at any time after the original issuance of the bonds, any single bond may be exchanged for two or more bonds of like tenor and of principal amounts totaling the principal amount of the bond so exchanged, and may also provide for the signature or signatures to be affixed to any bonds or coupons issued in any such exchange. For the purposes of this section bonds are of "like tenor" if they bear the same interest rate, mature on the same date and are otherwise identical as to tenor except for bond number, denomination or coupon amounts.
Ca. Gov. Code § 5604