Cal. Gov. Code § 16676

At such time as the Treasurer may fix with the approval of the Governor in accordance with Section 16673; (a) the Controller shall draw his warrant for the payment of maturing or matured bonds and coupons and, (b) the Treasurer shall out of such funds remit to a fiscal agent in the form of check or draft sufficient funds for the redemption of the bonds and coupons or to reimburse the fiscal agent for matured bonds and coupons redeemed by the fiscal agent.