In accordance with Chapter 119. of the Revised Code, the director of environmental protection shall adopt and enforce, and may modify and rescind, rules setting forth and requiring compliance with national effluent limitations, national standards of performance for new sources, national toxic and pretreatment effluent standards, and national sludge use and disposal standards, as necessary in order to ensure compliance with sections 301, 306, 307, and 405 of the Federal Water Pollution Control Act. No person shall violate any such rule, except in compliance with the terms and conditions of a permit issued under section 6111.03 of the Revised Code.
To the extent the effluent limitations adopted by the administrator of the United States environmental protection agency pursuant to section 304 of the Federal Water Pollution Control Act are inapplicable, the director may establish on a case-by-case basis effluent limitations in a permit issued under section 6111.03 of the Revised Code, based upon best professional judgment. In establishing such effluent limitations, the director shall take both of the following into consideration:
R.C. § 6111.042