N.C. Gen. Stat. § 156-83
The board of drainage commissioners shall appoint a competent drainage engineer of good repute as superintendent of construction. Such superintendent of construction shall furnish a copy of his monthly and final estimates to the Department of Environmental Quality, in addition to other copies herein provided which shall be filed and preserved. In the event of the death, resignation, or removal of the superintendent of construction, his successor shall be appointed in the same manner.
The board of drainage commissioners may, in its discretion, agree with the Soil Conservation Service of the Department of Agriculture or any agency of the government of the United States or of North Carolina whereby such agency may furnish the service required of the superintendent of construction. If this is done by the board, any reference in this Chapter to the superintendent of construction and/or his duties shall include or be exercised by the said agency subject to the approval of the board of commissioners.
N.C. Gen. Stat. § 156-83