7-13-122. Status of federal property within metropolitan sanitary and/or storm sewer district. Whenever any lot, piece, or parcel of land belonging to the United States or mandatory of the government shall front upon the proposed work or improvement or is to be included within the district declared by the board of county commissioners in its resolution of intention to be a district to be assessed to pay the cost and expenses thereof, the board shall in the resolution of intention declare that the said lots, pieces, or parcels of land shall be omitted from the assessment to be made thereto to cover the cost and expenses of said work or improvement, and the cost of said work or improvement in front of said lots, pieces, or parcels of land shall be paid by the county from its general fund.