19. (1) Whenever any person desires that a temporary road-way should be made over, or that temporary water course should be made through, any public embankment, or that a temporary dam should be constructed in any embanked river or public water course, he shall apply to the Engineer or to any person appointed in that behalf by the Engineers. (2) Such Engineer or person shall communicate the application with his opinion to the Project Director of the Authority of the area concerned and shall await the Project Director of the Authority order in respect thereof, unless he thinks that there is special reason for the immediate execution of the work, in which case he may execute the same or cause it to be executed without waiting for the orders of the Project Director of the Authority. (3) The proposed work shall be executed by an officer of the Government or the Authority on the applicant's depositing the amount estimated by the Engineer to be necessary to defray the expenses of, and incidental to, making and removing such road way, or of, and incidental to, making, closing or removing such water course or dam. If the amount deposited is found afterwards to exceed the amount required, such excess shall be returned to the said applicant.