In the event of a dispute between the 52nd District Agricultural Association and the California Exposition and State Fair, the Division of Fairs and Expositions shall represent the interests of the association. If mediation of any matter fails to reach a consensus, the Department of General Services shall arbitrate all matters on the basis of the best economic interests of the state and the decision of the department in the matter shall be final. Reasonable notice shall be given by the department to all parties to a disputed matter and an opportunity to present evidence shall be provided to all parties. Arbitration costs shall be shared equally between the parties.