Section 5
SEC. 5. Section ten of Act Numbered Twenty-eight hundred and thirty-two, as amended by Act Numbered Forty hundred and seventy-nine, is further amended so as to read as follows: "SEC. 10. Letting of contract for 'public works of the District.—Except in the case of construction or repair of water and sewer pipe lines or storm drains and such other projects as in the discretion of the Board should be undertaken by the District, all public works of construction or repair of the district involving an estimated cost of ten thousand pesos or more should be let by the manager with the approval of the District Board to the lowest and most advantageous bid of a responsible bidder. Notice to bidders shall be published in the Official Gazette as required by law. In case no satisfactory bid is received, the manager may proceed to advertise anew or with the approval of the Board, he may proceed to execute the work. Before award of contract is made the manager shall require the contractor to give an adequate bond to secure the proper accomplishment of the work to be done and/or to satisfy all of the obligations for materials used and labor employed upon the same.”