(1) If an election occurred and no exceptions are filed within the time set forth above, or if the challenged ballots are insufficient in number to affect the result of the election, the board shall serve the parties a certification of exclusive representative, where appropriate.

(2) In order to be certified by the board as the exclusive representative for any bargaining unit that existed before July 1, 1973, and is presently in existence, the labor organization must submit a copy of the existing CBA as support of its claim.