Within five days after a public utility district shall receive a license from the federal power commission to construct a hydroelectric project of an estimated cost of more than two hundred and fifty million dollars, including interest during construction, or, in the case of a district which on September 21, 1977, is in existence and has such a license within five days of September 21, 1977, the district shall forward a true copy of said license, certified by the secretary of the district, to the county auditor of the county wherein said district is located.