Cal. Gov. Code § 16422
The fund is under the control of the Department of General Services and is available for expenditure for the payment of rent; the cost of maintaining, operating, and insuring building space; the purchase and sale of materials, supplies, and equipment; the rendering of services to state and other public agencies and, in connection therewith, for the employment and compensation of necessary personnel and expenses; all expenses for the support of the Office of State Printing; and the purchase of machinery or equipment, including motor vehicles, needed in the operation or administration of the Office of State Printing.
On or before September 30 of each fiscal year, the Controller shall transfer to the General Fund any cash surplus, as determined by the Director of Finance and reported to the Joint Legislative Budget Committee, in the fund as of the preceding June 30.
Ca. Gov. Code § 16422