Cal. Government Code § 16952

In the discretion of the committee, any bonds issued under this chapter may be secured by a trust agreement, indenture, or resolution between the state and any trustee, which may be the Treasurer or any trust company or bank having the powers of a trust company chartered under the laws of any state or the United States and designated by the Treasurer. The trust agreement, indenture, or resolution may contain provisions for protecting and enforcing the rights and remedies of the bond owners as may be reasonable and not in violation of law. Any trust agreement, indenture, or resolution may set forth the rights and remedies of the bond owners and of the trustee and may restrict the individual right of action by bond owners. In addition to the foregoing, any trust agreement, indenture, or resolution may contain other provisions as the committee may deem reasonable for the security of the bond owners, including, but not limited to, provisions specifying the date or dates on which debt service payments on the bonds shall be transferred to the trustee. Any trust accounts created by the trust agreement, indenture, or resolution may be held outside the State Treasury.