Pub. L. 82-534, tit. IV, sec. 403

Sec. 403. Any of the approximate costs enumerated in titles I, II, and III of this Act may, in the discretion of the Secretary concerned, be varied upward 10 per centum but the total cost of all work so enumerated under each of such titles shall not exceed the total appropriations authorized in respect of such title by section 402 of this Act.