The governing body may make general appropriations for a particular class of work or for any combination of classes of work set out in this article and the money so appropriated may be expended for such work or classes of work by the board designated by law to carry on such work at such time and place as in their judgment shall seem proper. The resolution or ordinance making any such appropriation shall state that it is to apply to local improvements and that an assessment is thereafter to be levied on property in the vicinity thereof benefited or increased in value by reason thereof.
N.J.S. § 40:56-14