Cal. Gov. Code § 15820.83

The board and the regents may borrow funds for project costs, excluding preliminary plans and working drawings, from the Pooled Money Investment Account pursuant to Sections 16312 and 16313. Bond proceeds may be utilized to reimburse the regents for the costs of preliminary plans and working drawings for board approved projects, however, the regents shall provide interim financing for these costs. Project funds expended prior to project approval by the board shall not be reimbursable from the proceeds of the bonds.