The site shall be acquired in the name of the municipality, and all funds appropriated or contributed for the purpose shall be paid into its treasury and kept as a separate fund to be expended by the treasurer of the municipality in the usual course and method, upon the certification of the mayor or other chief executive officer and two other members of the commission, to be designated by the commission for that purpose, that the payment is authorized by the commission within the purpose, and authorization of the ordinance and contracts thereunder.
N.J.S. § 40:60-21