Prior to approval of the issuance of any bonds under authority of this chapter, except refunding bonds issued pursuant to section 40-57-19.1, the governing body of the municipality shall, when a competitive project is involved, include notice of the competitive nature of the proposed project in the public notice required to be published prior to the public hearing required under section 40-57-04. The governing body shall not approve the bond issue unless it appears that the impact and effect of the issue upon existing industry and business will not result in an unfair advantage for the proposed project to the substantial detriment of existing enterprises.