N.C. Gen. Stat. § 130A-300

This Article shall not be construed as amending, repealing or in any manner abridging or interfering with those sections of the General Statutes of North Carolina relative to the control of water pollution as now administered by the Commission nor shall the provisions of this Article be construed as being applicable to or in any way affecting the authority of the Commission to control the discharges of wastes to the waters of the State as provided in Articles 21 and 21A, Chapter 143 of the General Statutes.