The Secretary of the Interior is authorized to construct a Federal reclamation project for the irrigation of the lands of the Arch Hurley Conservancy District in New Mexico under the Federal reclamation laws: Provided, That construction work is not to be initiated on said irrigation project until (a) the project shall have been found to be feasible under section 412 of this title, but the project may be found to be financially feasible if the Secretary of the Interior finds that the amount to be expended from the reclamation fund can be repaid by the District, and further that the amount of money to be expended from the reclamation fund, plus the amount of money which has been made available from other sources (for the estimated period of construction), equals the estimated cost of construction; (b) a contract shall have been executed with an irrigation or conservation district embracing the land to be irrigated under said project, which contract shall obligate the contracting district to repay the cost of construction of said project met by expenditure of moneys from the reclamation fund in forty equal annual installments, without interest; (c) contracts shall have been made with each owner of more than one hundred and sixty irrigable acres under said project, by which he, his successors, and assigns shall be obligated to sell all of his land in excess of one hundred and sixty irrigable acres at or below prices fixed by the Secretary of the Interior and within the time to be fixed by said Secretary, no water to be furnished to the land of any such large landowner refusing or failing to execute such contract.