(a) In the case of a district where the Board of Supervisors of the County of Santa Clara has appointed itself as the district board of a district, the district board may call an election to be held in the district for the purpose of submitting to the voters of the district the question of whether the district board may provide for a system of binding arbitration for the resolution of impasses in employer-employee relations.
(b) Where the district has created service zones, the election specified in subdivision (a) shall be held only in those zones in which the district provides direct fire protection and not in those zones in which fire protection is provided by contract with other agencies.