Cal. Gov. Code § 15847
Subject to the obligations of the board to its certificate holders or bondholders, the Treasurer is authorized to invest and reinvest moneys in any of the accounts in the Public Buildings Construction Fund, in such eligible securities specified in Section 16430 as the board shall designate. The board may direct the Treasurer to deposit moneys in interest-bearing accounts in state or national banks or in state or federal savings and loan associations having principal offices in this state. All such deposits in banks and savings and loan associations shall be secured at all times, in the same manner as state moneys are by law required to be secured. The board may alternatively require the transfer of moneys in the accounts to the Surplus Money Investment Fund for investment pursuant to Article 4 (commencing with Section 16470) of Chapter 3 of Part 2 of Division 4 of Title 2. All securities or other investments made under the provisions of this part shall be held by the Treasurer as custodian thereof.
All interest received or other earnings derived from such investments shall be collected by the Treasurer, and shall be deposited in the State Treasury to the credit of the account in the fund from which such interest or other earnings were derived.
Expenses incurred by the Treasurer in taking and making delivery of bonds or other securities purchased as investments from such money in the fund may be paid from the fund.
Ca. Gov. Code § 15847