All proceeds from the sale of bonds, except those derived from premiums and accrued interest, are available for the purpose provided in Section 13898.5, but are not available for transfer to the General Fund to pay principal and interest on bonds. The money in the fund may be expended only as provided in this chapter.
Source:
Section 13898.5, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=WAT§ionNum=13898.5..