Cal. Government Code § 25906

The board of supervisors of a county may contract with a nonprofit corporation or association for the conducting of an agricultural fair in the county for the period and under those conditions as the board may determine. The contracts may provide for the use, possession, and management of any public park or fairgrounds by the nonprofit corporation during the period of the contract. When that use, possession, and management is granted, the board may also allocate to the nonprofit corporation a sum of money it deems necessary to be used for any purpose incidental to the fair. If the contract involves the use of property acquired with money derived from the state or if the contract contemplates the use of money allocated or appropriated by the state for the fair, the contract shall be subject to approval by the Department of Food and Agriculture. If the county desires to receive an allocation under Section 3200 of the Food and Agricultural Code, the corporation shall submit an annual budget to the Department of Food and Agriculture, showing the estimated revenues and the proposed expenditures from all sources during the ensuing calendar year, which budget shall first be approved by the board of supervisors. The corporation shall also comply with any other law relating to county fairs as a condition necessary for the county to receive an allocation of state money for fair purposes. Upon the dissolution of any such corporation, all property and assets thereof within the county with which it contracts shall be paid to that county.